the university of texas at dallasherve/laf.wm.pdf · 2003. 11. 26. · abo6 ! 9 cd ve 7fg h ii o; j...

31

Upload: others

Post on 28-Feb-2021

0 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

������������ ��������� ��������������� �� ��� ��� "!$#�%�&���� ����#('*)�+,+,-�'.�����/��0132�45)76�'8���7�9!1:,;7<")�=,;

> ? @ A BDCE@ BGF BIHKJMLON P @RQ BIHTSA @VUWBYX H[Z\@RU LON ]^LOQ _ CE@ ` BaPDN LcbKLedD@

f HgLcbK? Q @hbKL�Z

ihjlk�mon�p1q rts�u jvn�mwsx*y{z}|~xw�O�5x*�1y1�"�e���.���7����������������1|e�9�,�7�����������������������

�Ms�mO���s �¡ t¢£n�¤�¥���7�����5���§¦¨��©wª���«����1���e¬­��®�®¯���o�����°�¤�.�±�7�����5���.������1²w��³��5´��7´��"�¶µ��¬~� ·(���£���������¸�����

¹ n�p1º»s�¼¾½¶jÀ¿ÂÁ¼���.���7������������3���~²w��³��ô��7´��"�ĵ��¬~� ·9���W���������������

ÅOÆEÇÉÈ9Ê�Ë�È(Ì�ͯÎ�È�Ï�Ð5ÑÒÐÃÈ�ÑÃÐÃÈ�Ó°Ð5Ô�ÈÕÔ×Ö×Ë�Ç,Ð5Ô�È�Ñ5ͯѭÐ5Ô.Ø�Ð�Ñ�Í�Î�Ë¥Ù§ÈÚØ�Ì�ͧÐ5Ô.Î�È(Ð5Í�ÛÚÌ5È�Ü×ݥͧÌ5È�ÑÆEÇ,Ì5Þ�Í�Ï�ßÒÎÚÈ�Î�Ç,Ì5ÖÀÌ5È�ÑÃÇÝ�Ì�Û9È�Ñ�àeá�Ý�â�ãÃÈ�Û9Ð5ÑcÆEÈ(Ì�ÈOË.Ì5È�ÑÃÈ�Ï×ÐÃÈ�ÓÕØ­Ñ5ͯÎ�Ë¥Ù§È�ä,È(Ì�Íæå�Û(Ø�Ð5ͧÇÏÐ5Ø,ÑÃÞÄçèÈ,àéß�à§ê�ë{ì»í�î\ï�ð�ñ"ŤÌ�Ý�È�òôó.Ø,Ù¯ÑÃÈ�ò�õÕÆoÍ�Ð5Ô¶çèÇ,Ì{ÆoÍ�Ð5Ô�ÇÝ�Ð�õöÑÃÈ�Û9ÇÏ.Ó¥Ø�Ì5Ö�Ð5Ø,ÑÃÞ�Ñ(à÷ ÈÉä�Ø�Ì�ͧÈ�ÓTÐ5Ô�ÈÂÓ.ÍæøùÛ(Ý.٧бְÇ,ú­Ð5Ô�ÈÉË.Ì5Ç,â¥Ù§È�ÎÕÑÂçûÍüàéÈ,à§êOÈ�Ø,ÑÃÖ ��� Ô.Ø�Ì�ÓWË.Ì5Ç,â"Ù§È�ÎÚÑ�õØ,Ï.ÓÄÐ5Ô.ÈÕË�Ç,ÐÃÈ�Ï�Ð5ͯØ,ÙeúèÇ,ÌÀÍ�Ï¥Ó.Ý.Û(Í�Ï�ß�Ø,Ñ5Ñ5Ç�Û(Í�Ø�Ð5Í�ä,ÈlÛ9ÇÏ�úûÝ.Ñ5ͧÇÏýçèÈ,àéß�à§ê}ëvþÿíÿî ï�ðõ�àá�È�Û9ÇÏ.Ó.Ø�Ì5ÖÕÐ5Ø,ÑÃÞ�ÑöÆöÈ(Ì5È­Û�Ô�ÇÑ5È�ÏùÑ5Ç�Ø,ÑöÐÃÇ�Ç7ä,È(Ì�Ù§ÇØ,ÓvÐ5Ô�È1Ë¥Ô�ÇÏ�ÇÙ§Ç,ßͯÛ(Ø,Ù"Ù§Ç�Ç,ËvØ,Ï.ÓÐ5Ô�ÈÀÛ9È�Ï×ÐÃÌ�Ø,Ù*È9Ê�È�Û(Ý�Ð5ͧä,È�Ç,úeÐ5Ô�ÈÀÆöÇ,Ì5Þ�ͯÏ�ßlÎ�È�ÎÚÇ,Ì5ÖÂÑÃÖ�ÑÃÐÃÈ�Î�à ÷ È�ú�ÇÝ.Ï¥ÓÂß,Ì5È�Ø�ÐÃÈ(ÌÓ.Í�ÑÃÌ�Ý.Ë.Ð5ͧÇ϶Ç,ú{Ë�È(Ì5ú�Ç,Ì�ÎÚØ,Ï.Û9ÈùÇÏ»ÐÃÌ�Ý�ÈùË.Ì5Ç,â¥Ù§È�ÎÕÑ3ÆoÔ.È�Ï â�Ç,Ð5Ô°Ð5Ô�ÈvË¥Ô�ÇÏ.ÇÙ§Ç,ßÍ �Û(Ø,ÙeÙ§Ç�Ç,˶Ø,Ï.ÓÿÐ5Ô�È�Û9È�Ï�ÐÃÌ�Ø,ÙcÈ9Ê�È�Û(Ý.Ð5ͧä,ÈÚÆöÈ(Ì5È�Ç7ä,È(Ì�Ù�ÇØ,Ó�È�Ó¸ê¤Ø,Ï¥Óÿß,Ì5È�Ø�ÐÃÈ(Ì�Ó.ͯÑÃÌ�Ý�Ë �Ð5ͧÇÏÕÇ,ú8Ë�È(Ì�ú�Ç,Ì�ÎÕØ,Ï.Û9ÈoÇÏlúèØ,Ù¯ÑÃÈoË.Ì�Ç,â¥Ù§È�ÎÚÑ}ÆoÔ�È�ÏlÐ5Ô�È1Û9È�Ï×ÐÃÌ�Ø,Ù"È9Ê�È�Û(Ý.Ð5ͧä,È­ÑÃÖ�Ñ5ÐÃÈ�ÎÆöØ,Ñ3Ç7ä,È(Ì�Ù§ÇØ,Ó.È�Ó¸àÕÅwÔ.ͯÑ~Ë¥Ø�ÐÃÐÃÈ(Ì�Ï Ç,úöÌ5È�Ñ5Ý.Ù�Ð5Ñ­Í�ÑÒÛ9ÇÏ.Ñ5ͯÑÃÐÃÈ�Ï�ЭÆ{ͧÐ5ÔÿÐ5Ô�ÈÚÆöÇ,Ì5Þ�Í�Ï�ß �Î�È�Î�Ç,Ì5ÖùÌ5È�ÑÃÇÝ�Ì�Û9ÈÒÔ�Ö�Ë�Ç,Ð5Ô�È�Ñ5Í�Ñ�Ø,Ï.Ó�Ñ5Ý.ß,ß,È�ÑÃÐ5ÑOÐ5Ô.Ø�ÐwÐ5Ô.È~Û9È�Ï×ÐÃÌ�Ø,Ù¸È9Ê�È�Û(Ý�Ð5ͧä,È�Í�ÑOØÛ9Ì�ͧÐ5Í�Û(Ø,Ù*ÑÃÖ�ÑÃÐÃÈ�Î Í�Ï×ä,ÇÙ§ä,È�ÓÿÍ�ÏÿÑ5Í�Î�Ë¥Ù�È3Ø�Ì�ͧÐ5Ô.ÎÚÈ(Ð5Í�Û�à­ó�ͯÏ.Ø,Ù�Ù§Ö,ê�Ð5Ô�È�Ì5È�Ñ5Ý.Ù�Ð5ÑoÇ,úEÐ5Ô�ÈË.Ì5È�ÑÃÈ�Ï×ÐOÑÃÐ5Ý.Ó�ÖÚÇÏùâ�Ç,Ð5ÔùÐÃÌ�Ý�È­Ø,Ï.ÓùúûØ,Ù�ÑÃÈ1Ë.Ì5Ç,â¥Ù§È�ÎÕÑEØ,Ï.ÓùÐ5Ô�È�Í�Ì�ͯÎ�Ë¥Ù�Í�Û(Ø�Ð5Í�ÇÏ.ÑcúèÇ,ÌÛ9Ç,ßÏ.ͧÐ5ͧä,È3Ø�Ì�ͧÐ5Ô.Î�È(Ð5Í�Û~Ð5Ô.È(Ç,Ì�ͧÈ�ÑwØ�Ì5È�Ó.Í�Ñ5Û(Ý.Ñ�ÑÃÈ�Ó¸à

���������� ��������������������� � ��� ���! #"%$'&#( *)*$'&#+!,*-/.0,*12&�345$6&#+7.985(;:' 5(!3 *)�,�<*=�$��*�!$>?.9 !=�, 8�$5@A*�!)�,64�BA�,�(*CA�C!1' D.E85(%FG ��H JIK5��LMI/�� J N�'OO65�N�����QP!R;�TS����U'V��XWZY�S\[0]^W`_ZYabO6! 9��cd���Ve��������7fg�����hiI� ����O;��j����lk'�� N��������5�mIn��h���o�i�p]^����U��q����prs���h���Uut�U'�hv5���� N�h�9R F �wO�����h���m�hU6����Rx����O65�N�m�fZ����� N�lk'U'��hUq! mI^�5 O���� ���U!�������i�7����Zy`y`z`���|{EU!������U'�i���h5U'���}]K5Uq����� � ~�f2�K NR�V��5�h5q�R5�������R��}���5�5� F�� �`I^���H�m�h��L��/�����'��ULsro����Ll�` ��'Ve���if����6�`UU�b�`�P���U��2�������'�������h��V����%��5����5Us���q!��U��}_n�P}�����Z���q������6yZ�#v*�����Y*����5U����U6�l�!��U'���}P'�������sfg��n����hO�fg�'��Ve5�m�J��U!�� /�UlO����v*����' n�����if��� /�f�����H nO'��O6��� F

���

Page 2: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

:�� ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

)+*-,%.0/�1�2436587�/�9:2�.; <�=?>@�ACBDADEGF$E�H$I�H#JKJ�=LILE�BMFON�H#BMP#=QN�ADRTS�BD= >JKADE�<URT=�E�ACI SUJ�H#@�BD=�R�NVN�W�IX<Y>N0Z\[^]`_6abACN

H#c�=QHdeE�<�=?@�>N�ADI?NKf(ADBCBDN�>�I�g%W�ACJK=�hTh�W�J�ADc�i$=�BC=LRT=LcjEX>J:FON�IX<�H(H#Blknmoc%W�R�@p=�JqHdrN:E�W�hUAC=�N<�>�P#=TACcjP#=LNKE�ADij>�E�=�hsE�<�=tJK=�S�JK=�NK=�cjEX>�E�ACH#cUNuHdv>J�AME�<�R�=LE�ACI�dw>I�E�N$ACcxRT=LRTH#J:Fy>c�hxE�<�=I�H#ic�ADE�ADP#=4S�JKH!IL=�NKN�=�N�E�<�>�E�W�c�hU=�J�BDAC=Q>NKS+=LILE�N�HdeR�=�cjE�>Bp>J�AME�<�R�=LE�ACIkz;v{�H�Rt>}|KH#JVh�=�~E�=LJ�R�ACc�>cjE�N0HdrNKW�@(|K=LILE�NL��Sp=�JKd�HJ�RT>c�I�=?<�>�P#=8@p=�=Lc�>hUP�>cUI�=�h���c�>R�=�BMF�E�<�=?RT=LRTH#J:FH#J�i#>c�AC��>�E�ADH#cyHd NKACR�S�BC=O>JKADE�<�RT=�E�ADI�dw>ILE�N�>c�hx{0HJ�f%ACc�i�~GR�=�R�H#JKF�J�=�NKH#W�JKI�=�NLk^; <U=J�H#BD=bHd�E�<�=8J�=LS�J�=LN�=Lc%E�>�E�ADH#c�Hd\>J�AME�<�R�=LE�ACI4dw>ILE�NvACctBCH#c�i�~�E�=LJ�R�R�=�R�H#JKF����(;Q���0<�>N@+=L=�c�B�>JKi#=�BMFxh�H!ILW�R�=�cjE�=Lh�ADc�@+H�E�<�>h�WUBDE�N�>c�h�IX<�ACBDh�J�=Lcek��^W�IX<�BC=�NKN�ACN�f%c�H}{4ce�<�H}{0=�P#=LJ��Q>@pH#WUE�E�<�=�J�H#BD=�Hdb{�H#J�f%ADc�i�~GR�=�R�H#J:F-J�=LN�H#WUJ�I�=LNYACc�N�ADRTSUBC=�>JKADE�<URT=�E�ACI�k; <�=�S�W�JKS+HN�=8HdrE�<�=8S�JK=�NK=�cjE4S�>Sp=�JvADN�E�Hud�W�JKE�<�=�J0ACcjP#=LNKE�ADij>�E�=?E�<U=8J�H#BD=bHdr{�H#JKf(ADc�i�~RT=LRTHJKFYJK=�NKH#W�J�IL=�NQACc�N�ADRTSUBC=�>JKADE�<�RT=�E�ADIk�nACJKNKE���{�=�@�J�AD=L��F8J�=LP(AD=L{�E�<�=�Rt>�ACc�>NKN�W�R�SUE�ACH#c�N�HdU>�EKE�=�cjE�ACH#c�>�BJ�=LN�H#WUJ�I�=�E�<U=�H#JKAC=�N

>c�h�ILW�J�JK=�cjEORTH(h�=LBCNuH�d4N�ACR�S�BD=t>JKADE�<�RT=�E�ADIk�; <�=Lce�V{0=�JK=�SpH#JKE`EG{0Hy=��USp=�JKACR�=�cjE�NE�<�>�EV=��U>R�ACc�=Lhu{4<�=�E�<�=LJVH#J�c�HE�N�ACR�S�BD=0>JKADE�<�RT=�E�ADIqADNV>��+=�I�E�=�h�@jF`P>�JKF(ACc�ibRT=LRTH#J:Fh�=�RT>c�hUN�kn; <U=0=��!Sp=�JKACR�=�cjEX>B%JK=�N�WUBDE�NzS�JKH�P(ADh�=qd�WUJKE�<U=�JzACc�NKACi#<jE�H#c$E�<�=�{v>�F$ACc6{4<�ADIX<{0HJ�f%ACc�i�RT=LRTH#J:F�J�=LN�H#W�JKI�=LN�S�B�>�F�>�ILJ�ADE�ACI�>B J�H#BD=^ADc�NKACR�S�BC=�R�=�cjEX>B?>JKADE�<URT=�E�ACI�k�nACc�>BCBMF#��{0= h�ADN�ILW�N�NVE�<U= ACR�S�BCADI�>�E�ACH#c�NrH�dpE�<�=�NK=4J�=�NKW�BDE�Nnd�H#Jnd�HJ�RT>B!R�H(h�=�BDNnHdpN�ADRTSUBC=>J�AME�<�R�=LE�ACI�k

� k � k4�6 � ¢¡�£p �¤w¥}£§¦�¨e©�¡Xª�¥%«©�¬L¡� w­+¡�¥�©K¤w¡�ª�®

� k � k � k$¯§°²±(³´Cµ�¶�·�¸�¹U¸(·�°²ºw»6¼µ�½X¾�¿j¾?À�¿!´Áºw°Â¹p´Cµ�¶G½�µX¾}Ã�¿!½�·XµQº²Ä�µXÃ�½�°lµX¾�Å8ÆbP#=�J�E�<U=?S�>�NKE�EG{0H`h�=�~I�>hU=�N��qI�Hi#c�ADE�ADP=YS�NKF(IX<�HBCH#i#ADNKE�N�<�>�P#=�RT>h�=tE�<�=�h�ACN:E�ADc�ILE�ACH#c-@p=LEG{�=�=Lc�>�WUE�H#RT>�E�ACI>c�hTI�H#cjE�JKH#B�S�JKH!IL=�N�NK=�N6��=kÇi�kM�!�rH#i#>ce� �}È ZjÉ(� �}È Z#ZUÊ(Ë?>}PH#cYÌÎÍ6H#SU<�=�JL� ��ÈjÏÈ Ê(Ð\HN�c�=LJÌ�Ñ!cjF(h�=�JL� �}È#Ï É!ÊpÑ!<�AM��JKACc�Ì�Ñ!IX<�cU=�AChU=�J�� �}ÈjÏÏ ��k�Ò0J�AD=L��F�p>WUE�HRt>�E�ACI�S�JKH!IL=�NKN�=�Nb>J�=dw>NKE��#=L�+H#J:E�BC=LN�NL�j>WUE�H#c�H#R�H#W�NL�#>c�h�hUH8c�HEnACcjE�=LJKd�=�JK=0{4ADE�<uHE�<�=�JnS�J�H(I�=LN�N�=LN��j{4<�=LJ�=�>�NI�H#cjE�J�H#BDBC=�htS�J�H(I�=LN�N�=LNb>�J�=8=���H#J:E�d�W�B��UNKBCH}{6��>cUh�JK=�BMFtH#c�>�E�E�=LcjE�ACHc�>BpJ�=�NKH#W�JKI�=�NLk�; <U=c�>�E�W�J�=�H�d6>�E�E�=�cjE�ADH#c�>B4JK=�N�HW�J�IL=�N�N�WU@�N�=LJKP(ACc�i�ILH#i#c�AME�AMP#=�SUJ�H(I�=�NKN�=LN�<�>Nt@p=�=LcÓE�<�=N�W�@%|K=�ILEbHdn>OBDH#c�i�h�=L@�>�E�=k;v{0HÓEGF(Sp=�N�H�d�E�<�=LH#J�AD=�N�<�>}P=-@p=�=�cÔS�J�H#SpH#NK=�hÕJ�=Lij>JKh�ACc�i�E�<�=sc%W�R�@p=�J�Hd�>�EK~

E�=Lc%E�ACH#c�>B�I�>S�>I�AME�AC=LN�ACcjP#HBDP#=LhoADcÖI�H#i#cUADE�AMP#=�E�>N�f%N��8E�<�>�E�ADN�NKACc�iBC=�~�I�>S�>I�AMEGFÓ>cUhR�W�BME�ACSUBC=�~�J�=LN�H#W�JKI�=�E�<�=�HJ�AC=LN�k×; <�=xNKE�J�=Lc�iE�<UN^>�c�hØ{�=�>�f(cU=�N�NK=�N�H�du=�>IX<oH�d`E�<�=�NK=>S�S�JKHj>IX<�=LN?<�>}P=`@p=�=Lc�=��!E�=�c�NKADP=�BDF�hUACN�ILW�N�NK=�h�ADc�E�<�=6BCAME�=LJ�>�E�W�J�=���N�=�=uÙW�N:EbÌÛÚv>J:~S+=LcjE�=�JL� �}È#È#Ü Êe�rH#ij>�ce� ��ÈjÏÈ � �}È Z#Ý!� �}È ZjÉ!Ê+Ëb>�P#H#c�� �}È Z]UÊ�Ë?>}PH#cyÌÞÍ6HS�<�=�JL� �}È#ÏÈ �d�H#J�=��!E�=�c�NKADP=QhUACN�ILW�N�NKACH#cUNX��kn; <�=�JK=Ld�H#JK=�j{0= JK=�I�>BCB(@�J�AD=L��F`E�<�=0Rt>ADc�>NKN�W�R�SUE�ADH#c�N�H�d=�>IX<TS+=LJ�NKS+=LILE�AMP#=?<�=�JK=kV; <�=QACh�=�>�@+=L<�ACc�h�N�ADc�i#BD=�~GJK=�NKH#W�J�IL= E�<�=LH#J�AD=�N?�w=�kßi�kM�!�^I��r=LH!he��}ÈjÏ#Ï >t>c�hà@�ÊrÐ\H#NKc�=�J6Ì�Ò0HAC=�NL� �}È#Ï!� ÊeÐzH#N�cU=�J�ÌÞá�BC=�ADce� �}ÈjÏâ Êeá6><�c�=LRt>�ce� �}È#Ïâ Êá6><�c�=LRt>c�Ìã;zJ�=�ADN�RT>ce� �}È Z�]%�vACN E�<�>�EbSp=�J:d�H#J�RT>c�IL=$ADc^i=�c�=LJ�>Bzh�=�Sp=�cUh�NbH#c�E�<�=>�P>�ACB�>�@�ACBDADEGFYH�d�J�=�NKH#W�JKI�=�NLä?E�<�=uR�H#J�=`ACcUd�HJ�RT>�E�ADH#c�E�HY@p=�S�JKH!IL=�N�NK=�hyACc�>TEX>NKf§��E�<�=

Page 3: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � :�

RTHJ�=8JK=�N�HW�J�IL=�NQ>J�=�cU=�=�hU=�hek�Gc�N�ADE�W�>�E�ACH#c�Nq{4<�=�JK=6N�W�@(|K=LILE�Nb>JK=bdw>IL=�h�{4ADE�<�>�I�H#c!~I�W�JKJ�=Lc%E6E�>N�f§�rE�<�=�>R�H#W�cjE�H�d�JK=�NKH#W�J�IL=�N$ACN�JK=�h�W�IL=�hs>c�hySp=�JKd�HJ�RT>c�I�=�hU=�I�JK=�>NK=�NL�>N0NK<�H}{4c�@%Ft>cTACc�ILJ�=�>�N�=8ADctJ�=�>ILE�ACH#c�E�ADRT=u� �n;Q��k!; <UACN0NKACc�iBC=�~�I�>S�>I�AMEGF�>S�S�JKHj>IX<e�<�H}{0=�P#=LJ��b<�>Nt@p=�=Lc N�=�JKACH#WUN�BDF�IX<�>�BCBC=Lc�i#=Lh�ACc J�=LI�=�cjE�F=�>JKNy�w=�kßi�kM� mbBDBCSpH#JKE�� �}È Z#ÝUÊËb>�P#Hce� �}È Z]�Ê(Ëb>�P#Hc�Ì Í6HS�<�=�JL� �}ÈjÏÈ Ê��ÖACIXf�=�c�NL� �}È Z#ÝU� �}È Z]j��>�c�htR�H#NKEqJK=�N�HW�J�IL=E�<�=LH#J�ADNKE�N?<�>�P=�>h�HSUE�=Lhà>�RuW�BDE�ACS�BD=�~GJK=�NKH#W�J�IL=�S+=LJ�NKS+=LILE�AMP#=�kQ; <U=LF^>J�iW�=$E�<�>�E?S+=LJ:~d�H#J�RT>c�IL=?ADN�BCACR�ADE�=�hO@jF�N�=LP=�J�>B+hUAD�+=�J�=LcjEvJ�=LN�H#WUJ�I�=LN��U>N0=�P!ADh�=�cUI�=�ht@%FOE�<�=b=���=LILEvH�dACc�SUWUE��%H#WUE�S�WUE��U>cUhtI�=LcjE�J�>�BpSUJ�H(I�=�NKN�ADc�iuR�H!h�>BCAME�AC=LNnJ�>�E�<�=LJqE�<�>c�@jF�E�<�=?>RTHW�cjE�H�dACcUd�HJ�RT>�E�ADH#ctE�H�@p=$SUJ�H(I�=�NKN�=Lhek4Æ8c�=$S�J�H#@UBC=�R {4ADE�<�R�W!E�ACSUBC=�~�J�=LN�H#W�JKI�=$>S�SUJ�Hj>IX<U=�N��<�H}{0=�P#=LJ���<�>�N�@p=�=LctE�H$IX<�>J�>ILE�=�J�AD��=4E�<�=Qc�>�E�W�J�=QHdeE�<�=QJ�=�NKH#W�JKI�=�N0>`S�>�JKE�ADI�W�BC>J�EX>�N�fACN�=��!Sp=�I�E�=�hTE�H$W�N�=��U>6@�W�JKh�=�ctE�<�>�EqACN�SpH#N�NKAC@�BD= H#c�BMF�{4ADE�<t>�E�<�=LH#J�=�E�ADI�>B�d�J�>RT=�{0HJ�fE�<�>�E6=�c�>@UBC=�N8E�<�ACNbBC=LP=�B�H�d�NKS+=LI�A���I�>�E�ACH#c�k��s=�@+=LBCAC=�P#=uE�<�>�E$Òv>�h�h�=�BD=LFp�ÇN8E�<�=LH#JKFàH�d{0HJ�f%ACc�i�R�=�R�H#JKFTACNQ>c�=��U>R�S�BD=�HdnNKW�IX<�>�d�J�>�RT=�{0H#JKf§k� k � k Ü k��b±�µ��%¸Àb¹p´Cµ�Ã��QÀ�¿!´Áºw°Â¹p´Cµ�¶G½�µX¾}Ã�¿!½�·XµQº²Ä�µXÃ�½�°lµX¾�Å?Òv>hUh�=�BD=LFp�ßNqE�<�=LH#JKFOH�d�{�H#J�f%ACcUiRT=LRTHJKF8I�>c$@+=VP(AC=�{0=Lh�>Nz>4S�>JKE�ACILW�B�>J�ACc�N:EX>c�IL=�Hd�>4R�W�BME�ADS�BC=�~GJ�=LN�H#WUJ�I�=�>S�S�JKHj>IX<ek��HJ�f%ACc�i�R�=�R�H#J:F^JK=Ld�=LJ�N8E�HYE�<�=uE�=�R�S+H#J�>JKF^NKE�H#J�>�i#=�>c�hàSUJ�H(I�=�NKN�ADc�i�HdqACcUd�HJ�RT>�~E�ADH#c�ADc�>�P�>JKAC=�EGF^H�dVI�H#ic�ADE�ADP#=6EX>�N�f%NO��Ò0>h�h�=LBC=LF� �}È Z��U� �}È#È Ý!Ê�Òv>�h�h�=�BD=LF�Ì��?AME�IX<e��}ÈjÏ ]j�O>�c�hÓACNOE�<UH#W�i#<jE�E�H�ILH#c�NKACNKETHd6>xBCADRTAME�=�h(~GI�>�S�>I�AMEGF�IL=�cjE�J�>BQ=��!=�ILWUE�AMP#=à>cUhN�W�@UN�AChUA�>J:FTNKB�>�P#=bNKF(NKE�=�R�N�k�Æ8c�=8HdrE�<�=?d�W�cUILE�ADH#c�NvH�deE�<�=bI�=�cjE�J�>B+=��!=�ILWUE�AMP#=�NKF(N:E�=�R{0HW�BCh�@p=�E�HbR�H#c�AME�H#JeE�<�=v>�BCBCH(I�>�E�ACHc�Hd§>�EKE�=�cjE�ACH#c�>�BjJ�=�NKH#W�JKI�=�Nnh�W�J�ADc�ibILH#i#c�AME�AMP#=�>I�~E�AMP!AME�AD=�N�k6;v{�H�N�B�>�P=�NKF(NKE�=�R�N$<�>}P=O@+=L=�cyN�W�ii#=�N:E�=�h�ä�>YS�<�H#cUH#BCH#iACI�>�BM~¢>�JKE�ADI�W�BC>�E�HJKFBCH(H#S-E�<�>�EONKE�H#J�=LNT>�c�h RT>c�ADS�W�BC>�E�=LN�N�Sp=�=LIX<!~G@�>�N�=�h Rt>�E�=�JKA�>B0>c�h�>�P(ACN�WUH�~GNKS�>�E�AC>BN�f�=LE�IX< S�>h-E�<�>�E�ADNuJ�=LN�SpH#c�NKAC@�BD=td�H#J�N:E�H#J�>i#=�>cUh�Rt>cUACS�W�BC>�E�ADH#cxHd P(ACN�WUH�~GNKS�>�E�AC>BRt>�E�=�JKA�>B�k�; <�=LN�=�IX<�>J�>ILE�=�J�ADNKE�ACI�NuRt>f�=�ADE�>�P#=�J:F�W�NK=Ld�W�BvILH#c�IL=�SUE�W�>B0d�J�>RT=�{0HJ�f{4ADE�<�ACc�{4<UACIX<�E�H�N:E�W�h!Fà>�EKE�=�cjE�ACH#c�>�B\S�JKH!IL=�NKN�=�N�E�<�>�E�ILH!H#JKh�ACc�>�E�=`>c�hàILH#cjE�J�HB�S+=LJ:~d�H#J�RT>c�IL=�ADc�I�Hi#c�ADE�ADP=�E�>N�f%N�BCADf=�N�ADRTS�BD=�>J�AME�<�R�=LE�ACIs�w=�kßi�kM�Q�rH#i#AC=^Ì Òv>h�hU=�BC=�F#��}È Z Ï Ê��QADE�IX<e� �}ÈjÏ Z6>6>c�h�@§��k�; <�ACNVd�J�>RT=�{0HJ�f�>�BCN�H6<�=LBCS�N�ADc�IX<�>J�>I�E�=LJ�AC�LACc�i�d�WUE�<�=�JE�<�=Qc�>�E�W�J�=4HdpE�<U=QJK=�NKH#W�J�IL=�N�ACcjP#H#BMP#=LhTADcTNKW�@(|K=�I�E�NL�!Sp=�J:d�H#J�RT>c�IL=4>c�hO{v>N�>h�HSUE�=Lh<�=�JK=`E�HtS�ADc%E�S+HACcjE {4<�>�EbS�>JKE�ACILW�B�>Jv{�H#JKf(ADc�i�~�RT=LRTH#J:FYN:F!N:E�=LR^�+ADdn>cjF#�pACNQACcjP#H#BMP#=LhACc�N�ADRTSUBC=�>JKADE�<�RT=�E�ADIk

� k Ü k4����©�¤�¡ �z©�¡"!}¤�¡#o¥"�zª�¤%$'&+¨w¡?¦�©K¤� w­($�¡} �¤�¬�®� k Ü k � k��b¾X¾}Ã}·�°w¸º�°²¼µ�ÀtÃ*)(µ�´Â¾YÃ��u¾�°²Àb¹p´CµO¸½�°²º²Ä(Àtµ�ºw°l·�ÅQ; <�=OI�Hc�N�=Lc�N�W�Nu>S�Sp=�>JKN�E�H�@+=E�<�>�Eb>�J�ADE�<�R�=LE�ADI?dw>I�E�NQ>JK=�NKE�HJ�=�h�ACc�>c�ACcjE�=�J�JK=�BC>�E�=Lh�cU=LEG{�H#J�f�ADc^�(;Q� ��mbNK<�I�J�>�d²E���}È Z Ü � �}È Z â � �}È Z Ï Ê�m?N�<�ILJ�>�d²EQÌ �nAC=LJ�RT>ce� �}È Z Ü Ê�Úv>R�S�@+=LBCB�� �}È Z Ï >O>c�h�@eʧÚv>R�S!~@+=LBCB Ì Í�J�><�>�R^� �}È ZjÉ!Êv�r=LRt>ADJ�=tÌ Ñ!AD=�i#BD=�J�� ��È#È É!Êv�^ACBDBC=�JL�VÐ\=LJ�BDR�WUE�=LJ��qÌ á�=�>�EK~ACc�iU� ��È Z]�ÊnÑ!AC=Li#BC=LJ�� �}È ZZ�>�>c�hx@eÊ�Ñ(AC=�iBC=�J6Ì Ñ!<�ACSUBC=LF� �}È#È É!ÊnÑ!AD=�i#BD=�J6Ì Ñ!<UJ�>i#=LJ���}È Z]UÊ�Ñ(EX>��LF(f§�nmbNK<�I�J�>�d²E���Ì+�b>RT>c�c�� �}È Z Ü Ênd�H#J6JK=�I�=LcjE�NKF(cjE�<U=�N�=LN�N�=L=YmbNK<�I�J�>�d²E���}È#ÈjÜ Ê8Ú0H#JKc�=LE��QÑ!=�JKH#ce�-,8=LBCH(IX<�=�vÌ �rH#JKAC=LN�� �}È Z#ZUÊQ�r=�RT>ACJK=^Ì Ò�=�J�cUH#W�N�NKAl� �}ÈÈU� Ê

Page 4: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

:,- ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

�^I}Ú0BDH#N�f�=LF� �?>J�BD=LF��ÌÛÑ!HfH#B�� �}È#ÈU� ��k�m?I�I�HJ�h�ADc�i�E�HO>NKN�H(I�A�>�E�ADP=�RTH(h�=LBCN��(E�<�=�SUJ�=�~N�=Lc%E�>�E�ADH#c�Hd8>�c�>JKADE�<�RT=�E�ADItS�JKH#@�BC=LR �w=�kßiUkD� â [Ô]%�uJK=�NKW�BDE�N�ADc�>ILE�ADP�>�E�ADH#c�HdQE�<�=c%W�R�@p=�JtcUH!h�=LNTNKS+=LI�A���=�hÓADc E�<�=^SUJ�H#@�BD=�R ��=kÇi�kD� â >c�h ]%��k m?ILE�ADP�>�E�ADH#c�N�S�JK=�>hUNd�J�H#RÞE�<�=LN�=�c�H(h�=LN?>�BCH#c�i�>N�NKH!ILA�>�E�ADP#=bBCACcUf(N�N�H�E�<�>�E4J�=LB�>�E�=�h�c�H(h�=�NL��N�WUIX<�>Nvd�HJ0E�<�=N�W�R HJ S�J�H(h�W�I�E��§>JK=6>BCNKHT>�ILE�AMP�>�E�=LhekÑ!W�@�NK=�g%W�=Lc%E`J�=LN�=�>J�IX<x<�>N8E�=�NKE�=�hxS�J�=Lh�ACI�E�ADH#c�N8Hd�>NKN�H(I�AC>�E�AMP#=�R�H!h�=LBCN?ACcàN�ADRTSUBC=

I�H#ic�ADE�ADP#=�>JKADE�<�RT=�E�ADIu{4ADE�<sRT>ACcUBDF�EG{�H^EGF(Sp=�N`Hd�E�>N�f§�zE�<�>�E$ADN$SUJ�H(h�W�ILE�ACH#c��w=�kßiUkD�Z6[Ó]�_$a���>c�hyP#=LJ�A���I�>�E�ACH#c ��=kÇi�kD�zZ6[Ó]�_ �}Ü � ;zJ�W�=�aÎ�p>�BCN�=�a���k Gcs@pHE�<yEGF(Sp=TH�dEX>NKf%N���N�W�@%|K=�ILE�N`JK=LE�J�AC=�P#=O>YNK=LE6HdqI�>�c�h�ACh�>�E�=�>�c�NK{�=�JKN$P(A�>�>YNKS�J�=�>h�ADc�i�>ILE�ADP�>�E�ACH#cRT=LIX<�>c�ADN�R ��mbc�h�=LJ�NKH#ce� ��È Z â ÊnÚ0H#BCBDACc�N8Ì �rHd²E�W�NL� ��ÈjÏ É#���zNK=�BD=�ILE6E�<�=t>�S�S�J�HS�J�AC>�E�=>c�N:{0=LJ8I�>cUh�ACh�>�E�=�>�c�h���H#JQI�HRTS�>�J�=`E�<�=�>�c�NK{�=�J8NK=�BD=�ILE�=�h�{4AME�<^E�<�=uSUJ�H#SpH#N�=Lhy>c!~NK{�=�JLk+�?H}{�=LP=�J��6AME�<�>N�@p=�=�coN�<�H}{4cØE�<�>�E�E�<�=x=L�+=�ILE�N^H�duNKH#RT=�dw>�ILE�HJ�N�J�=���=�I�ES�J�H(I�=LN�NK=�N�Hd4JK=LE�JKAC=�P>�BqHJ`ILH#RTSUWUEX>�E�ACH#c�k^��H#J$=��U>R�S�BD=�\E�<�=YNKAC��=THdvE�<�=tS�JKH#@�BD=�Rh�=LE�=�JKRTADc�=�NYE�<�=àh�A���ILW�BDEGF�Hd$J�=LE�J�AD=LP(ACc�i-E�<�=y>S�SUJ�H#S�JKA�>�E�=à>c�N:{0=LJ^ADcÓE�<�=àR�=�R�~H#JKF�cU=LEG{�H#J�fo�w=�kßiUkD��mbN�<UI�J�>�d²EYÌ Ò0>�E�E�>i#BCAC>U� �}ÈjÏ Z!ÊQÚv>RTSU@+=LBCB Ì Í�J�>�<�>R�� �}È ZjÉ!ÊÍ6JKH!=LcyÌ Ð\>J�f%RT>ce� ��ÈjÏ#Ü Ê�Ñ%EX>��F!f�=LE6>B�kD� �}È Z Ü ��k �?=LJ�=��rh�A���I�WUBDE8SUJ�H#@�BD=�R�NO�w=�kßiUkD�È�� Zx_ Ï#Ü �`S�J�H(h�W�IL=�BCH#cUi#=�J'�n; NO>c�h�R�H#J�=Y=LJ�JKH#J�NuE�<�>c�=�>�NKF-SUJ�H#@�BD=�R�N��w=�kßiUkD�â�� ]�_ ��Ü ��k�; <�ACN�S�J�H@�BC=LRÞhUA���I�W�BMEGF�=L�+=�ILE0EGF!SUACI�>�BCBDFOJK=�BDAC=�NqH#cYR�=�R�H#J:FOJ�=LE�J�AD=LP�>BS�J�H(I�=LN�NK=�Nv>�c�hTJK=L��=LILE�NqE�<�= E�ACR�=vE�H$>ILI�=LN�N�E�<�=QN�H#BDWUE�ADH#c�ACcjE�H6E�<�=4RT=LRTHJKF�cU=LEG{�H#J�f�wNK=�=��r=���=�P!JK=��ÑU>h�=LN�fjF#�eÌ×Ò0ACN�>c���§ADc�S�JK=�N�NL�+d�H#J?>TJK=�IL=�cjEbE�<�H#J�HW�i#<�hUACN�ILW�N�ADH#c�HcE�<�ADN S+HACcjE���kmbBDN�H�ILH#c�NKACNKE�=�cjEu{4AME�<-SUJ�=�hUACILE�ACH#cUN`Hd >N�NKH!ILA�>�E�ADP#=�R�H!h�=LBCNL�\NK=LP#=LJ�>B0S+H#N:EK~�J�=LE�J�AD=�~

P�>B��ILH#R�S�WUEX>�E�ACHc�=L�+=�I�E�N�<�>�P#=y@p=�=LcØJK=�SpH#JKE�=�hÖACcÓE�<�=àI�Hi#c�ADE�ADP=à>J�AME�<�R�=LE�ACI^BCADE:~=�J�>�E�W�JK=���=kÇi�kD�0mbN�<UI�J�>�d²E�� �}È Z Ü � ��È Z â � �}È Z Ï � �}È#È#Ü Ê4mbN�<UI�J�>�d²EYÌ �nAD=�JKRt>c�� �}È Z Ü ÊÚv>R�S�@+=LBCB�� �}È Z Ï >t>�c�h^@�ÊeÚv>R�S�@p=�BDB�Ì×Í6J�><�>R�� �}È Z#É!ʧ�r=�RT>ACJK=6Ì×�p>�FH#Bl� �}ÈÈ É!Ê�^ACBDBC=LJuÌ Ðn>JK=�h�=LN�� �}È#È ÝUÊ��^ADBCBD=�J���Ð\=�JKBCR�W!E�=�JL��Ì á�=�>�E�ACcUi�� �}È Z�]%��ksÆ8c�=YHd4E�<�=�NK==L�+=�I�E�NuADN�I�>BDBC=LhyE�<�=��>NKN�H(I�A�>�E�ADP=�I�H#c!d�W�N�ADH#c ��=L�+=�ILE`H#J8E�<�=�:ACcjE�=LJKd�=�JK=�c�IL=���=L�+=�I�E>c�hy<�>N�@p=�=LcyH#@�N�=LJKP=�h�ADcà@+H�E�<àS�JKH!h�WUILE�ADH#cy>c�hàP=�J�A���I�>�E�ACHc�EX>NKf(NLk �E�ILH#c�N�ADNKE�NACc�H#@�NK=�JKP(ADc�i�BDH#c�i#=LJ�B�>�E�=�c�ILAC=�N�>cUh���H#JOR�H#J�=�=�JKJ�H#JKN�d�HJ�S�J�H#@UBC=�R�NOACc�{4<�ACIX<�E�<�=S�J�HS+H#NK=�h�>cUNK{�=�JORt>�E�IX<�=LN�>�I�HJ�J�=LILEO>�c�NK{�=�J�E�H�>c�HE�<�=�J�SUJ�H#@�BD=�R H#J`ACN�ILH#J�JK=�ILEW�c�h�=LJ0>�c�HE�<U=�J�H#Sp=�J�>�E�ACHc��w=kÇi�kM�UZ � ]u_ ��Ü Ê!Zz[�]�_ âjÜ ��k��§HJV=��U>R�S�BC=��(Úv>RTSU@+=LBCB>c�h�Í6J�><�>R � ��È ZjÉ#�qd�HW�c�h�E�<�>�E4R�H#N:E4=�J�JKH#J�N ADc�N�ACR�S�BD=bR�W�BME�ADS�BCADI�>�E�ACH#c�S�J�H@�BC=LRTNRt>�h�=�@jFàIX<�ADBCh�JK=�cy>c�hx>hUW�BDE�NO��Z È�� d�H#J�>�h�W�BDE�NX�?ADcjP#H#BMP#=�hàE�>@�BC=�~GJK=�B�>�E�=�h�>c�NK{�=�JKN�wNK=�=�>BCNKH��r=�RT>ACJK=�Ì Ñ!AC=Li#BC=LJ�� �}È#È É#��k�; <�=�NK=t>�J�=�W�NKW�>BDBDF�I�H#JKJ�=LILE6S�JKH!h�WUILE�N8E�H�@+=d�H#W�c�h�{4ADE�<�ACcOE�<�=QN�>�RT=QR�W�BME�ACSUBCACI�>�E�ADH#c`E�>@�BD=?>�N�ILH#J�JK=�ILEv>c�N:{0=LJ�N�d�HJ�HE�<�=�JqN�ADRTSUBC=R�W�BME�ACSUBCACI�>�E�ADH#c$S�J�H#@UBC=�R�NQ�w=�kßiUkD� â���Ï _ Ü ]6H#J â���Ï _ Ü Zj��k���W�JKE�<�=�JKRTHJ�=���ÖADc�f=LBM~Rt>�c�>cUh�Ñ!IX<�R�ACh!E�� �}ÈjÏ ]%�8JK=�SpH#JKE�=�hsE�<�>�Eu>N�NKH!ILA�>�E�ADP=�ILH#cUd�W�NKACH#csS�J�H@�BC=LRTNT�w=�kßiUkD�â [�É6_ � É#�\SUJ�H(h�W�I�=LhON�BCH}{�=�JVJK=¢|K=�I�E�ADH#c�E�ACR�=�NzE�<�>�c�cUH#c!~GILH#cUd�W�NKACH#c�SUJ�H#@�BD=�R�N4�w=�kßiUkD�â [oÉà_ Ü É#���\ACc�>^P=�JKA%��I�>�E�ADH#c�EX>�N�f§kà; <�ACN`I�H#c!d�W�N�ADH#c�=L�+=�I�E�<�>N�@p=�=Lc�J�=LS+H#J:E�=Lh

Page 5: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � :,:

{4ADE�<�d�HW�JKE�<!~�>c�h ��d²E�<!~qi#J�>�h�=�IX<�ACBDh�J�=Lc�@%F���=LRt>�ACJ�=����§>�F#H#B���>c�h�m?@+h�Aq� �}È#ÈU� ��W�N:~ACc�iY>TP#=LJ�A%��I�>�E�ACH#c�E�>N�f�>Nb{�=�BDBn>N8>Yc(WUR�@+=LJ:~�Rt>�E�IX<�ACcUiTEX>�N�f�ADc�@pHE�<y>�h�W�BDE�N8>cUhIX<�ACBDh�J�=Lcà�w��=���=LP(J�=��UÒ0ADN�>cU��!Ì �^J�f�H#c�A�|KI�� ��È Z#ZUÊ(�r=���=LP(JK=��á�W�BC>f§�(ÌÎÒ0ACN�>c���� �}ÈÈU� Ê�r=�RT>ACJK=�rÒv>�J�J�=�E�E����p>�FH#Bl�rÌÞmb@ph�Al� ��È#È ]%��k`;�F(S�ACI�>BCBMF#�eE�<U=O>N�NKH!ILA�>�E�ADP#=uI�H#cUd�WUN�ACHc=L�+=�I�ETADN�ACcjE�=�J�SUJ�=LE�=�h >N�E�<U=�=L�+=�ILE�Hd4E�<�=�>WUE�H#Rt>�E�ACIt>ILE�ADP�>�E�ACH#c-H�d?ADcjE�=�J:d�=�JK=�c�IL=S�J�H@�BC=LRTN H#c�N�WU@(|K=�I�E�N���E�J�W�= ��dw>BCNK=6h�=�ILACN�ADH#c�NLk

� k Ü k Ü k��bºwº¢µ�±�ºw°lÃ�±p¸´�½�µX¾}Ã�¿!½�·XµX¾`°²±yÀtµ�±�º�¸´z¸½�°²º²Ä(Àtµ�º�°l·�Å4mbN�NKH!ILA�>�E�ADP=`R�H!hU=�BCN4Hd�N�ACR�~S�BC=�ILH#i#c�AME�AMP#=�>JKADE�<URT=�E�ACIt<�>�P#=�=�R�S�<�>NKAC�L=�h�BCH#c�i�~�E�=LJ�R RT=LRTHJKF-N:E�JKW�ILE�W�J�=LNt>cUhS�J�H(I�=LN�NK=�N�k �QH}{0=�P#=�JL��ADE`<�>NuJK=�IL=�cjE�BMF�SpH#ACcjE�=�h�HWUEuE�<�>�E`N�ACR�S�BD=t>JKADE�<�RT=�E�ADI�Rt>�F>BCNKHsADcjP#H#BMP#=�NKH#R�=�>�EKE�=Lc%E�ACH#c�>B J�=LN�H#W�JKI�=LNy�wm?N�<�ILJ�>�d²E��-,8H#c�BD=LF#� �b>BC>N��vÌ��q>f�>BCA���}È#ÈjÜ Ê4Ò0J�>ADc�=�JKhe� ��È Z â Ê �QADE�IX<�� �}ÈjÏ Zx>s>c�h�@eÊQá6>}F=� ��È Z��UÊ4á6>�F#=�� Ò0H#c�cU= ��B��vÌÚ0<�=�c�� �}È Z â Ê�á6>�F#=���h�= �ÖACc�N:EX>cUBC=LF�eÚ0<U=�ce��Ì×Ò0H#c�c�= ��Bl� �}È Z È Êp��Hi#AC=���Í�ACBD<�H(H#BDF��Ì� F(c�ce� �}ÈÈ ]%��k\��H#Jz=��U>R�S�BC=����?AME�IX<Y� �}ÈjÏ Z#>j�eJ�=LS+H#J:E�=Lhud�H#W�Jz=��!Sp=�J�ADRT=LcjE�N\{4<UACIX<�=��(~S�BCHJ�=�h�E�<�=`JKH#BC=bHd�ADcUd�H#J�RT>�E�ACH#cTNKE�HJ�>i#=6ADc�{�H#JKf(ADc�iORT=LRTHJKFt{4<U=�c�Hc�=6S+=LJKd�H#JKRTNRT=LcjEX>B�>�J�ADE�<�R�=LE�ADIk �QADE�IX< NK<�H}{0=LhØE�<�>�Es� � � �Ö<�=LcØNKH#BDP(ADc�i�>W�J�>BCBMF�S�J�=LN�=�cjE�=�hR�W�BME�AM~�h�ACiADEQS�J�H@�BC=LRTN8NKW�IX<->�N�] â ]�[ Z Ï �rN�W�@%|K=�ILE�NuJK=�SpH#JKE�=�hy@�J�=�>f%ACc�i�h�H}{4cyE�<�=S�J�H@�BC=LRTNqACcjE�H`N�=LJ�AC=LNvHdr=LBC=LRT=Lc%E�>JKF�N:EX>i#=LN�Ê�� Ü ��{4<�=�c�NKW�@(|K=�I�E�Nv{�=�JK=�>N�f�=�h�E�H`h�=�~B�>�FOE�<�=?H#WUE�S�WUE�Hd�ACc�hUADP(ACh�W�>B�S�>J:E�A�>�B�J�=�NKW�BDE�N0H#ctI�>BDI�W�BC>�E�ADH#ce�jACcjE�=�J�ADRÛACc!d�H#J�RT>�E�ADH#c{v>�Nqd�H#JKi#HEKE�=�c�AMd�cUHE�WUE�ADBCAD��=�h�ADRTR�=�hUA�>�E�=�BDFpÊ�� â �\d�H#JKi#=LEKE�ADc�i8E�<�=4ADc�ADE�A�>B%ACc!d�H#J�RT>�E�ADH#c{v>�N0>�N�HW�J�IL=?Hd+=�JKJ�H#JKNq>c�hOE�<�= d�H#JKi#=LEKE�ACcUi$ADc�I�JK=�>NK=�hT>Nq>8d�W�c�ILE�ACH#cOHd+E�<�=4c%W�R�@p=�JHdvI�>BCILW�B�>�E�ACHcàNKEX>�i#=�NLk Gc�>�h�h�ADE�ACH#c��\Ò�J�>ADc�=�JKhÓ� �}È Z â �bNK<�H}{0=Lh�E�<�>�E��zACcyIX<�ADBCh�JK=�ce�N�<�HJKEK~lE�=LJ�R RT=LRTH#J:Fy=�c�ILH!hUACc�i�>c�h-JK=LE�JKAC=�P>�B�h�=�P#=LBCH#Sp=�h�R�H#J�=�J�>�S�ACh�BMFàE�<�>�c�E�<�=>J�AME�<�R�=LE�ACI8SUJ�H(I�=�NKN�ADc�i�k�?NKACc�i�>?h�W�>B ~�EX>�N�f6S�>J�>h�ACiR^�}EG{�H�HE�<�=LJ�NKE�W�h�AD=�N��J�=�SpH#J:E�=�h�=�P(ACh�=Lc�I�=vE�<�>�En{�H#JKfj~

ACc�itRT=LRTH#J:F�ACN8ILJ�ADE�ACI�>Brd�H#JbNKACR�S�BC=u>J�AME�<�R�=LE�ACI$S+=LJKd�H#JKRt>cUI�=k6á6>�F#=�=�E�k6>Bv� �}È Z â Ê�}È Z È �?>�EKE�=�R�SUE�=�h�E�H�R�=�>�N�W�JK=uE�<�=�>�E�E�=�cjE�ADH#c�>BzI�>S�>I�AMEGF�BC=�d²Ebd�JK=�=�h�WUJ�ACcUitE�<�=�hUADd�~d�=�JK=�cjEONKE�>i#=�NuHd4P#=�JKADd²F(ACcUià>�EG{0H�~�E�=LJ�R >h�h�AME�ADH#c�S�JKH#@�BD=�R�äOE�<�=Y=Lc�I�H(h�ACcUi�Hd4E�<�=>h�h�=Lc�h�NL��E�<�=`I�H#R�S�WUE�>�E�ADH#c�H#J?JK=LE�J�AC=�P�>B�HdVE�<�=u>ILE�W�>B�N�WUR^�§E�<�=`=�c�ILH!hUACc�iYH�d�E�<�=NKE�>�E�=LhT>�c�NK{�=�JL�U>cUh ��c�>BDBDF6E�<�= hU=�I�ADN�ADH#cO>c�hOJ�=LN�SpH#c�NK=QN:EX>i=�N�kVÚ0<�ACBDh�J�=Lc�ACc�i#J�>h�=�NÜ �q]��v>cUh �U��>N�{�=�BCB4>�N�ILH#BCBD=�i#=�N:E�W�hU=�cjE�NO{0=LJ�=�E�=�N:E�=Lh�H#c�>àEG{0H�~�h�ACiADEO>hUh�ADE�ACH#cS�J�H@�BC=LRÞP=�J�A���I�>�E�ACHcTEX>�N�f§k�; <�=8I�Hc�I�W�JKJ�=Lc%E E�>N�fO{0>NvE�<�=bN�ACR�S�BD=?h�=�E�=LILE�ADH#cYHdz>�c>W�h�AME�H#J:F�S�JKH#@p=�ADcjE�=�JKS+HB�>�E�=�hx>�E6h�AM��=LJ�=�cjE$ACcjE�=�JKP�>BDN�h�W�JKACc�i�E�<U=OP(ADN�W�>BVSUJ�=�NK=�cjEX>�~E�ADH#csH�d0E�<U=Y>h�hUADE�ADH#cyS�J�H@�BC=LRTNLkY; <�=T>WUE�<UH#J�N6d�H#W�c�hxE�<�>�Euh�AM��=LJ�=Lc�I�=LNuACcs>@�ADBCAMEGF>R�H#c�i�R�ACh�h�BD=8=�BD=�R�=�cjEX>�JKF�NKIX<�H!HBrIX<�ACBDh�J�=Lc�{�=�JK=`ILH#J�JK=�BC>�E�=Lh�{4AME�<�>�EKE�=�cjE�ACH#c�>�Be=Ld�~��I�AD=�c�I�Fyh�W�JKACc�iYE�<�=O=�c�ILH!h�ADc�i�>c�hyI�HRTS�W!EX>�E�ACH#càS�<�>N�=LN���{4<�=�JK=�>N$h�AD�+=�JK=�c�IL=�N6ACc>@�ADBCADEGF�>�RTH#cUiYI�H#BDBC=Li#=`N:E�W�hU=�cjE�N�{�=�J�=OILH#J�JK=�B�>�E�=�h^{4ADE�<y>�E�E�=LcjE�ACHc�>B\>c�hàJ�=LN�SpH#c�NK== ��I�AD=�c�I�F�>�EQE�<�=uILH#R�S�>J�ADN�H#c�>cUh�h�=LI�ACNKACH#c^NKE�>i#=�NLk ; <�=�NK=�J�=LN�W�BME�N?>J�=$I�Hc�N�ADNKE�=LcjE{4ADE�<�E�<�=4ACh�=�>�E�<�>�E�{�H#J�f%ACcUi`R�=�R�H#JKFuJ�=LN�H#W�JKI�=LNv>JK= J�=�g%W�ADJ�=LhTE�H6Sp=�J:d�H#J�R×>6N�ADRTSUBC=>J�AME�<�R�=LE�ACI�S�JKH#@�BD=�R P#=LJ�A���I�>�E�ACH#cyEX>�N�f§k�; <�=th�W�>BM~lEX>NKf�S�>J�>h�ACiR <�>N`>BCNKH^@p=�=Lc

Page 6: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

:,2 ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

W�N�=Lh�@jFt�rH#iAC=Q>c�hYILH�~�{�H#JKf=�JKN0E�H`N�<�H}{ÖE�<�>�Ev>�JKE�ADI�W�BC>�E�HJKF�NKW�S�S�JK=�NKN�ACHc�>c�hYW�c�>�EK~E�=Lc�h�=�h�N�Sp=�=�IX<�>���=LILEQN�WU@(|K=�I�E�N��pSp=�JKd�HJ�RT>c�I�=6ADc^NKACR�S�BC=8ILH#W�cjE�ADc�iOEX>NKf(Nu���rH#iAC=6ÌÒv>h�hU=�BC=�F#� �}È Z Ï ÊeNK=�=�>BCNKHYmbNK<�I�J�>�d²E6=LE$>�BlkM� �}È#È#Ü Ê �?=�>BDF�Ì Ë?>ACJKc�=� �}È ZjÉ(Ê�Ëb>ADJ�c�=Ì �?=�>BDF� �}È Z â �v>c�h�ACc�ILH#RTSUBC=���>J�AME�<�R�=LE�ACIbE�>N�f%N`���rH#iAC=�=LEQ>�BlkM� �}È#È ]j��k�nACc�>BCBMF#�q>sJK=�I�=LcjEYJ�=LS+HJKET@%F�m?N�<�ILJ�>�d²Et=LEt>BlkÎ� �}È#È#Ü ��>h�h�JK=�N�NK=�h h�ADJ�=LILE�BMF�E�<�=

ACNKN�W�=�Hd4E�<�=YACcjPH#BDP=�R�=�cjEOHd4{0HJ�f%ACc�iàR�=�R�H#J:FsJK=�NKH#W�J�IL=�NOACc�NKACR�S�BC=T>JKADE�<URT=�E�ACI�k; <�=LFØh�ADN�ILW�N�NK=�hÎE�<U=sSpH#N�NKAC@�ADBCAMEGF E�<�>�E^J�=LE�J�AD=LP�>B�Hdu@�>N�ADI�>�J�ADE�<�R�=LE�ADI�dw>I�E�N�I�H#c!~N�W�R�=�Nv{�H#JKf(ADc�i�R�=�R�H#JKF�JK=�N�HW�J�IL=�N�k Gc�>ct=��!S�BCHJ�>�E�H#JKFTACcjP#=LNKE�ACij>�E�ACH#cTmbNK<�I�J�>�d²E =LE>Blkv>N�f�=�h�E�<U=�ACJQN�WU@(|K=�I�E�NbE�HTP#=LJ�AMd²F�N�ACR�S�BD=`>�c�h�ILH#RTSUBC=��^>�h�h�ADE�ACH#c�S�JKH#@�BD=�R�N?NKW�IX<>N��Z�[Ó]�_ ��Ü � ;\JKW�=}aÔ�§>BDN�=�a ��H#J Ü ]6[ Üâ _×] Ï � ;\JKW�=}aÔ�§>BDN�=�a ����>IX<xHdqE�<�=S�J�H@�BC=LRTN?>S�Sp=�>JK=�h�{4ADE�<^ADE�NQILH#J�JK=�I�E�>c�N:{0=LJ8>cUh�>BDN�HO{4ADE�<�>c�ADc�I�HJ�J�=LILEb>c�N:{0=LJACcyE�<�JK=�=O=��!Sp=�JKACR�=�cjEX>B�ILH#c�h�AME�ACHc�N�k GcxH#c�=�I�H#c�hUADE�ADH#ce�rNKW�@(|K=�I�E�N`N�>�{�>�BC=LEKE�=LJ�J�=�~S+=�>�E�=Lhud�H#W�J�E�ADRT=LN\Hc`E�<U=0N�ILJ�=L=�cekV; <�=�F`{�=�JK=v>NKf=Lh�E�H8JK=�Sp=�>�EzE�<�>�E�BC=�E�E�=�JzH#WUE\BCH#W�hE�<�JKH#W�i#<�E�<�=�=Lc%E�ACJK=uE�JKA�>B���>�E8>YJ�>SUAChà>cUhàI�H#c�N:EX>cjE�J�>�E�=�� �4=�Sp=�>�E�ILH#c�h�AME�ADH#c§��k Gc>c�HE�<�=�JqI�Hc�h�ADE�ACH#c��%E�<�=QN�W�@(|K=LILE�NvN�>�{ E�<U=?N�>RT=QBC=�E�E�=�Jq>NqACcOE�<�=QJ�=LS+=�>�EvILH#c�h�AME�ACHce�@�WUE4{�=�J�=6JK=�g%W�ACJK=�h�E�HOi#=Lc�=�J�>�E�=�{�H#J�hUNQ@p=�iACc�c�ADc�iu{4AME�<�E�<�>�E BC=�E�E�=LJ���c�>RTADc�iuE�<�=�RH#WUE�BDH#W�h�E�<�J�HW�i#<�H#W!E8E�<�=uh�W�J�>�E�ACHc�HdVE�<U=uE�JKA�>B0��:{�H#JKhài#=�c�=LJ�>�E�ACH#c �YI�H#cUh�ADE�ACH#c§��k�nACc�>BCBMF#��ADcy>YE�<�ADJ�hàI�Hc�h�ADE�ACH#c���E�<�=ONKW�@(|K=�I�E�N$N�>�{ãd�HW�J�I�H#cUN�H#c�>�c%E�N��z<�>hàE�H�c�>�RT=E�<�=LR H#W!EvBCHW�he�!>c�hYE�<U=�c�c�>R�=?E�<�=�RÞACctI�H#JKJ�=�I�E4>BDS�<�>@p=LE�ACI�>�BpHJ�h�=LJ6���>�BCS�<�>�@+=�EK~AC��>�E�ADH#c ��I�H#c�hUADE�ADH#c§��k�mbN�<UI�J�>�d²E�=LE�>Blk�>�BCN�H�RT>c�ACSUW�B�>�E�=�hyE�<�=TS�J�H@�BC=LR h�A���I�WUBDEGFP�>J�AC>@�BC=��nW�NKACc�i�S�J�H#@UBC=�R�NuILH#c�NKACh�=LJ�=�h�BDH}{6��RT=Lh�ACWUR^�n>c�h�<�ADi#<-ACcxE�=LJ�R Hd4h�A���~I�W�BMEGF#k���H#J N�ADRTS�BD=8S�JKH#@�BC=LRTNL��mbNK<�I�J�>�d²E?>c�h�I�H�~l{0HJ�f=LJ�NL�+JK=�N�WUBDE�N4NK<�H}{0=Lhà>c�=L�+=�I�EHd {�H#J�f%ACcUi�RT=LRTHJKFàBDHj>h�ILH#c�h�AME�ADH#c�N$H#c-B�>�E�=�cUI�AC=LN�k Gc�h�=L=�he� �n; NuACcsE�<�=tJK=�Sp=�>�EI�H#cUh�ADE�ACH#c�� �}â É â R�N�=LI}��{0=LJ�=Qdw>NKE�=�J�E�<�>cT=�AME�<�=LJqE�<�=b>�BCS�<�>�@+=�E�AC��>�E�ADH#c�� �}Ï � â RTNK=�I}�H#J4E�<�=${0H#JKh!~Gi=�c�=LJ�>�E�ACH#c�� ��Ï�È Z�R�N�=LI}�4I�H#c�hUADE�ADH#c�NLkvmbBME�<�H#WUi#<^cUHEbNKACi#cUA%��I�>cjE���E�<�=RT=LRTHJKF�BCH#>h � S�JKH#@�BD=�R h�A �TILW�BDEGF�ADcjE�=�J�>ILE�ACH#c�E�=Lc�h�=Lh�E�HsN�<�H}{ >xiJ�=�>�E�=�JT=Ld�~d�=�I�E Hd�E�<�=bN�=�ILH#c�h�>�JKFtE�>N�fTH#cYh�A ��I�W�BMEvS�JKH#@�BC=LR BC>�E�=Lc�I�AD=�NqE�<�>c�Hc�=�>N:FtS�JKH#@�BD=�RB�>�E�=�c�ILAC=LN�k�m?N�<�ILJ�>�d²E6=�E$>Blk`h�ACNKI�W�NKN�=�hyE�<U=�BC>IXf�H�d�SpH}{0=LJ6Hd�E�<�=�ADJb{�H#J�f%ACcUi�R�=�R�~H#JKF�BDHj>h�RT>c�ACSUW�B�>�E�ACH#c�k��§HJ�=��U>R�S�BC=���E�<U=LF�c�HE�=�h�E�<�>�E�NKW�@(|K=�I�E�NY=��!S+=LJ�AC=Lc�I�=Lhh�A���ILW�BDE�AC=�N�ADcàRt>�ACcjEX>ADc�ACcUiTE�<U=�J�>�E�=�H�d0H}P#=LJKE6P#=LJ�@�>�BCAC��>�E�ADH#cek�Gcs=���=LILE���NKW�@(|K=�I�E�NL�P#=LJ�@�>BDACN�>�E�ADH#c�N N�BDH}{0=Lh�c�HE�ACI�=�>@�BMFYh�W�JKACc�iOE�<U=6{�H#JKh�i#=Lc�=�J�>�E�ADH#c�>�c�h�>�BCS�<�>�@+=�E�ACN�>�~E�ADH#càEX>NKf(NL�n>Ydw>I�E�H#J8E�<�>�E6{0>N6I�>JK=Ld�W�BDBDF�ILH#cjE�JKH#BCBD=�hàACcàE�<�=OS�J�=LN�=�cjE`=��!Sp=�J�ADRT=LcjE�N�kÆbP#=�J�>BCB��zE�<�=TE�J�=Lc�h�N�JK=�SpH#JKE�=�h�@jFsmbNK<�I�J�>�d²E�=�E�>B�k�N�W�ii#=�N:E�E�<�>�E`E�<�=tJK=LE�JKAC=�P>�BqH�dN�ADRTS�BD=�>JKADE�<URT=�E�ACI?dw>ILE�NQADcjP#H#BMP#=�NQ>�EKE�=Lc%E�ACH#c�>BeJ�=LN�H#WUJ�I�=LN?ADc�{0H#JKf%ACc�i�RT=LRTHJKF#k; <�=$>S�S�JKHj>IX<�>h�HSUE�=Lh�@jF�m?N�<�ILJ�>�d²EQ=�EQ>BlkV>�Nv{0=LBCBr>N4@jF��rH#iAC=8=�EQ>Blk�ADN ACcjE�=LJ:~

=�N:E�ACcUi�@+=LI�>W�NK=�ADEb>�E�E�=�R�SUE�NQE�H�ADc%P=�N:E�ACi#>�E�=`h�ACJK=�ILE�BDF�E�<U=�ACcjP#HBDP#=LRT=LcjE�HdV{�H#J�f%ACcUiRT=LRTHJKFYJK=�NKH#W�J�IL=�N?ACc�E�<�=$>JK=�>OHd\N�ACR�S�BD=8I�H#ic�ADE�ADP#=6>�J�ADE�<�R�=LE�ADI�>c�h�E�H�E�=�NKEQ{4<�>�Ef%ACc�h Hd6>�EKE�=�cjE�ACH#c�>�B J�=�NKH#W�JKI�=�NL�4ADdb>cjF#�4>JK=^JK=�BC=�P�>cjETd�H#J�>JKADE�<�RT=�E�ADI�S�J�H(I�=LN�N�ADc�i�k��W�JKE�<�=�JKRTH#JK=�0E�<�ACNT>S�SUJ�Hj>IX<�N�W�i#i=�NKE�NtE�<�>�ETE�<�=�WUN�=�H�d8E�<�=^I�BC>N�NKACI�>�BQhUW�>BM~lEX>NKfS�>J�>h�ACiR×J�=�SpH#J:E�=�htACcTÒv>h�h�=LBC=�Ft>�c�h �?AME�IX<y� �}ÈjÏ ]UÊ(NK=�=�>�BCN�H��?AME�IX<e� �}ÈjÏ Z$>u>�c�hY@eÊ

Page 7: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � :,+

�rH#i#AC=bÌãÒv>�h�h�=�BD=LF� �}È Z Ï ÊU�rH#i#AD=8=LE >BlkM� �}ÈÈ ]%�qRT>�Ft@p=bP=�JKFtd�J�W�AME�d�W�B+ACcYADc%P=�N:E�ACi#>�EK~ACc�i8E�<�= J�HBC=0H�dp{�H#JKf(ADc�i6RT=LRTHJKF$J�=LN�H#W�JKI�=LN�ADc�N�ADRTS�BD=0R�=�cjEX>�B�>J�AME�<�R�=LE�ACI�k\�\ACc�>BDBDF�mbNK<�I�J�>�d²Eu=�E`>BlkM�ßN�{�H#J�fàNKW�i#i#=LNKE�N$E�<�>�E6E�<�=�ACcjPH#BDP=�R�=�cjE$Hd >�EKE�=Lc%E�ACH#c�>B�J�=LN�H#WUJ�I�=LNRt>�FT@+=?E�J�>�IXf=�h�@jF�E�<�=�c�>�E�W�JK=8HdrE�<U=8h�ACNKJ�W�S!E�ACHcYHdrE�<U=�>J�AME�<�R�=LE�ACIQS+=LJKd�H#JKRt>�c�I�=>N�>�d�W�c�I�E�ACHc�H�d?ILH#c�ILW�J�JK=�cjETE�>N�f§k �s=�>h�H#S!E�=�h�E�<UACN�>SUS�J�Hj>�IX< ADc-E�<�=�S�JK=�N�=LcjENKE�W�hUF#k

� k â k��z­+¡-&+©�¡Xª�¡X£p �ª� �«����(®4; <�=`RT>ADc�SUW�J�SpH#N�=$Hd\E�<�=6S�JK=�N�=LcjE8=��!Sp=�JKACR�=�cjE�N4{v>�N?E�HE�=LNKE�E�<�= <jF(SpHE�<�=LN�ADN�E�<�>�E�NKACR�S�BC= >�J�ADE�<�R�=LE�ADI0JK=�g%W�ACJK=�N�{�H#J�f%ADc�i6RT=LRTH#J:FuJK=�NKH#W�J�IL=�NLkÚ0H#c�NKACNKE�=�cjE�{4AME�<sE�<�=tBDH#i#ADI�W�c�h�=LJ�BDF(ADc�i�ILH#c�I�WUJ�J�=LcjE�EX>NKf%N����rH#i#>ce� ��ÈjÏÈ Ê�Æ8i#hU=�ce��r=LP(ACc�=��eÌ �VACNKc�=�JL� ��È Z#Ýj���§{�=ui=�c�=LJ�>BDBDF�>NKN�W�R�=`E�<�>�EQE�<�=`S+H(H#B�Hd�{�H#JKf(ADc�itR�=�R�~H#JKF�J�=�NKH#W�JKI�=�N6E�<�>�E6Rt>�F^@+=Oh�=�P#HE�=�hxE�H�>cx>JKADE�<URT=�E�ACI`EX>NKf�ACN�BDACR�ADE�=�h�>�c�hàE�<�>�EI�H#R�Sp=LE�AME�ADH#c�d�H#JV{0HJ�f%ACc�i`RT=LRTHJKF�JK=�NKH#W�J�IL=�N0d�JKH#R×>6N�=LI�H#c�h�>JKFOEX>�N�f�{4ACBDB�h�=�iJ�>h�=S+=LJKd�H#JKRt>�c�I�=4E�H$E�<�=Q=��(E�=LcjE0E�<�>�E�� � ��E�<�=QS�J�ADRt>�JKF�E�>N�f�JK=�g%W�ACJK=�Nq{0H#JKf%ACc�i`RT=LRTH#J:FJ�=LN�H#W�JKI�=LN4E�H�@p=8I�H#R�S�BD=LE�=Lhe�r� Ü �qE�<�=bE�H�EX>B+>R�H#W�cjEvHd�{�H#J�f%ADc�i�RT=LRTHJKFOJ�=LN�H#WUJ�I�=LNACN�BDACR�ADE�=LhÓ>cUhÛ� â ��E�<U=yEG{�H�EX>NKf(N�JK=�g%W�ACJK=yRTH#JK=�J�=LN�H#WUJ�I�=LN�E�<�>co>J�=y>�P�>ADB�>@�BD={4ADE�<�ACc�E�<U=6{�H#JKf(ADc�iORT=LRTHJKFYN:F(NKE�=LR^k

Gc�NKACR�S�BC=�>�J�ADE�<�R�=LE�ADI�P#=LJ�A%��I�>�E�ACH#càEX>�N�f%N��\N�W�@(|K=LILE�N�>J�=OS�JK=�NK=�cjE�=Lh-{4ADE�<xN�ADRTSUBC==�g%W�>�E�ACH#cUNbN�WUIX<y>NbZ?[�]O_ ��Ü >�c�h�R�WUNKE8JK=�NKS+H#cUh :E�JKW�=��TH#J :dw>BCNK=���@jF�S�JK=�NKN�ACcUi>S�S�JKH#S�JKA�>�E�=�f=�F!NLk�;qF(S�ADI�>BDBDF�eACc�E�<�ACN8E�>N�f§�rAME�ACN�>�N�N�WURT=LhyE�<�>�E8E�<�=OH#Sp=�J�>�c�hà=�c!~I�H(h�ACcUi�SUJ�H(I�=�NKN�=LN?JK=�N�WUBDEQACcYE�<�=$>ILE�ADP�>�E�ADH#c�Hd\I�>cUh�ACh�>�E�=6>c�N:{0=LJ���mbNK<�I�J�>�d²E�� �}È Z Ï ��}È#ÈjÜ ÊzÚv>RTSU@+=LBCBl� �}È Z Ï >�>cUhx@�Ên�r=�RT>ADJ�=�Ì �§>}FH#Bl� �}È#È É!Ê��r=LRt>ADJ�=�=�E$>BlkM� �}ÈÈU� Ê�}È#È ]UÊ���@�JKH!h�H��àÌ ��Hij>ce� �}È Z��U� �}È#È Ý#��kVÒ0=LI�>WUN�=�E�JKW�=�S�J�H@�BC=LRTN�ACcjP#H#BMP#=�N:E�J�Hc�i#=�JH#Sp=�J�>�c�h!~GILH#J�JK=�I�E0>�c�NK{�=�J�>N�NKH!ILA�>�E�ACH#cUN����n; NVd�H#J�E�<�=�NK=QE�J�W�=4S�JKH#@�BC=LRTN�>�J�=vEGF(S�ACI�>BCBMFN�<�HJKE�=LJQE�<�>c �n; NQd�HJ4>cjF�dw>BCNK=$SUJ�H#@�BD=�R�N�k0Ñ!RT>BCB�E�J�W�=`>c�h�dw>BDN�=6S�J�H@�BC=LRTN`�w=�kßiUkD�â � ]�_ �}Ü �n>JK= RTH#JK=vg%W�ACIXf%BMFuP#=LJ�A���=�h�E�<�>cOB�>JKi#=0S�JKH#@�BD=�R�N4�w=�kßi�kM� È � Z`_ Ï#Ü �n>cUh<�=�cUI�=�>JK=YN�=L=�c�>N�=�>N�AD=�J`S�J�H#@UBC=�R�N�k�; <�=�NK=�BCH#c�i=�J$B�>�E�=�c�ILAC=�N$d�H#JuhUA���I�W�BME�S�JKH#@!~BC=LRTN�I�>�c`@p=�ACcjE�=LJ�S�JK=LE�=Lhu@jF$>NKN�W�R�ACc�i E�<�>�Ezh�A���ILW�BDE�S�JKH#@�BD=�R �>c�N:{0=LJ\>�N�N�H(I�AC>�E�ADH#c�NEX>f�=�BCH#cUi#=�JbE�H�>I�E�ADP�>�E�=�ACc��!;Q� @+=LI�>WUN�=�E�<�=�E�J�>IL=�ACcàR�=�R�H#J:F^H�dqE�<�=�NK=O>N�NKH!ILAM~>�E�ADH#c�N�ADNu{�=�>f�=�J�E�<�>�c�E�<�=YNKRt>BDB�SUJ�H#@�BD=�R �>c�N:{0=LJO>N�NKH!ILA�>�E�ACH#cUN�kymbN�NKW�i#i#=LNKE�=Lh@jF�E�<�=6E�J�=Lc�h�NQJ�=LS+H#J:E�=Lh�@jF�mbNK<�I�J�>�d²E8=�Eb>�Blkb� �}È#È#Ü ����ADc^h�W�>BM~lEX>NKfYI�H#cUh�ADE�ACH#c�NL��E�<�=N�=LI�H#c�h�>JKF�EX>�N�f�ACNO=��USp=�I�E�=Lh�E�H�� � ��ADc�I�JK=�>NK=^BC>�E�=Lc�I�AD=�N��0>c�hÔ� Ü ��ADc%E�=�J:d�=�J�=�R�H#J�=NKE�J�H#c�iBDF�{4AME�<Oh�A���ILW�BDE�S�JKH#@�BD=�R�N�E�<�>cO{4ADE�<O=�>N:FOS�J�H#@UBC=�R�N�k �EqACNVI�BD=�>J�E�<�>�E�{4<�>�EN�<�HW�BCh�@p=0h�ADN�JKW�SUE�=Lh�@jF�N�=LI�H#cUh�>JKF`EX>NKf%NVACN\E�<�=vJ�>�E�=�Hd§S�J�H(I�=LN�NKACc�i�ADc%PH#BDP=�h�ADcuE�<�=S�J�ADRt>�JKF�EX>�N�f§k8; <�>�EbACNL��N�=LI�H#cUh�>JKF�EX>�N�f%N8N�<UH#W�BCh�>h�hàh�AM��=LJ�=�cjE8>RTHW�cjE�NbH�dVE�ACR�=ACc^=�>N:F�>�c�h�<�>JKh�S�JKH#@�BD=�R�N�k mãNKACR�S�BC=6IX<�>�c�i#=uADc^ADcjE�=�JKI�=LSUEb{�H#W�BDh�c�HE?=LP(AChU=�c�IL=E�<�=�{�H#J�f%ADc�i�~GR�=�R�H#J:Ft<jF(S+H�E�<�=LN�ACNLk

�ÖADE�<�ACc�E�<U=?dw>BDN�=4S�J�H@�BC=LRTNL�!>�N�N�H(I�AC>�E�AMP#=4I�HcUd�W�N�ADH#ctSUJ�H#@�BD=�R�Nq>J�=QI�H#JKJ�=LILE�W�c�h�=LJHE�<U=�J H#Sp=�J�>�E�ADH#c�N6��=kÇi�kD�§Zv[�]`_ âjÜ ��kV; <�=LJ�=Ld�HJ�=��ILH#R�S�>J�=LhY{4ADE�<�cUH#c!~¢>�N�N�H(I�AC>�E�AMP#=I�H#c!d�W�N�ADH#c�S�JKH#@�BC=LRTN��w=�kßi�kM�eZb[ ]T_ �}â ���e>�N�N�H(I�AC>�E�AMP#=$I�H#c!d�W�N�ADH#c�S�JKH#@�BC=LRTN?J�=Lg(WUACJ�=

Page 8: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

2,= ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

>h�h�AME�ADH#c�>B�SUJ�H(I�=�NKN�ADc�i�E�H^@+=�J�=G|K=�I�E�=�h�k GcUh�=�=Lhe��I�HcUd�W�N�ADH#c�SUJ�H#@�BD=�R�Nu>�J�=8|KW�h�i#=LhS�B�>�W�N�AD@�BC=�ILH#J�JK=�I�E`SUJ�H#@�BD=�R�N8@p=�I�>�W�N�=OHd0>N�NKH!ILA�>�E�ADP=�J�=�BC>�E�ADH#c�N?@+=�EG{0=L=�c-H#Sp=�J�>c�h�N>c�hsI�H#cUd�WUN�ACHc->c�N:{0=LJ�NLk�Ñ(W�@�N�=Lg%W�=�cjE�BMF#��E�<�=TILH#i#c�AME�AMP#=ONKF(NKE�=�R c�=�=Lh�N`E�H�S�JKH!IL=�NKNE�<�=LN�=x>I�E�ADP�>�E�=�h ILH#cUd�W�NKACH#c S�JKH#@�BD=�R�NTd�W�J:E�<�=LJ�cÖACc H#JKh�=�JTE�H�J�=G|K=�I�E�E�<�=LR^k ; <�ACNd�W�JKE�<�=�J$S�JKH!IL=�N�NKACc�i�EX>�f=�N$E�ADRT=O>cUh�>ILI�H#WUc%E�N$d�HJ6E�<�=Odw>ILE6E�<�>�E$I�H#cUd�WUN�ACHcsS�JKH#@!~BC=LRTN6EX>f�=tBDH#c�i#=LJ$E�H�@p=TJK=¢|K=�I�E�=Lh-E�<�>csI�H#R�S�>J�>@�BD=Odw>�BCN�=�S�JKH#@�BC=LRTNt���r=LRt>ADJ�=O=LE>BlkM� �}ÈÈU� Ê �}È#È ]�Ê �ÖACc�f�=�BCRT>c�Ì Ñ(IX<�RTADhUE�� �}ÈjÏ ]�Ê ��@�JKH!hUH�ÓÌ �rH#ij>�ce� �}È Z �j��k�GcE�<�=6{�H#J�f%ACcUiTR�=�R�H#JKFYH�P=�JKBCHj>h�I�Hc�h�ADE�ACH#c���ADdzE�<�=$h�W�>BeE�>N�f�SUJ�=LP=�cjE�N?E�<�=6d�W�JKE�<�=�JS�J�H(I�=LN�NKACc�iTHd�>�N�N�H(I�AC>�E�AMP#=6I�>�c�h�ACh�>�E�=LN���E�<U=�c�NKW�@(|K=LILE�N?R�W�N:E?N:E�ADBCB�E�<�ACc�fTE�<�>�E4E�<�=�NK=>N�NKH!ILA�>�E�ADP=vI�>cUh�ACh�>�E�=�N�>J�=0E�J�W�=�kVÚ0H#cUN�=�g%W�=LcjE�BDF�jE�<�=�F�N�<UH#W�BCh�JK=�NKS+H#cUh :E�JKW�=��6>cUhS�J�H(h�W�IL=�R�H#JK=V=�J�JKH#J�NrE�<�>c$ACc$>QN:EX>cUh�>J�h$I�Hc�h�ADE�ACH#c�k �QH}{0=�P#=�JL�E�<UACN�=L�+=�I�EnRT>�F8c�HE@+=�JK=L��=LILE�=�hyACc �\; NKACc�IL=�>càACcUI�J�=�>N�=uACc �n; i#=Lc�=�J�>BCBMF�d�HBCBCH}{4N?H�P=�JKB�>S�SUACc�i�~lEX>NKf=��!Sp=�J�ADRT=LcjE�N��p>cUh�>c�ACc�ILJ�=�>N�=$ACc �n;ÎRT>�F�>@�NKH#J�@^>cjF�I�HcUd�W�N�ADH#c���cUH#c!~GILH#cUd�W�NKACH#cB�>�E�=�c�I�F�h�AM��=LJ�=�cUI�=�NLk

GcsNKW�R�Rt>J:F#�rE�<U=TS�JK=�NK=�cjE�=��USp=�JKACR�=�cjE�N$ACcjP=�NKE�ACij>�E�=�hyE�<U=T=���=LILE`HdvILH#c�I�WUJ�J�=LcjEEX>NKf%N�H#cy>J�AME�<�R�=LE�ACI$S�J�H@�BC=LRTNQP#=�JKA%��I�>�E�ADH#cek�; <�=`{0H#JKf%ACc�i�R�=�R�H#JKF�h�=LRt>�c�hà<jF%~S+H�E�<�=LN�ACN\S�J�=Lh�ACI�E�NnE�<�>�Ev� � �rE�<�=�ACR�S�>I�E\H�d�E�<�=�N�=�ILH#c�h�>�JKF$EX>NKf${�H#W�BDhu@p=0i#JK=�>�E�=�JnHch�A���ILW�BDE0S�J�H#@UBC=�R�N��!>c�hx� Ü ��E�<�=�>NKN�H(I�AC>�E�AMP#=bILH#cUd�W�NKACH#ct=L�+=�ILE4NK<�H#W�BDhY@p=8NKE�J�=�cUiE�<!~=�c�=Lh�ACcx{0H#JKf%ACc�i�R�=�R�H#J:FyH�P=�JKBCHj>h�N�ADE�W�>�E�ACH#c�NL��>�EuBC=�>NKE`ACc�>I�ILW�J�>I�F�R�=�>�N�W�JK=�N�k; <�=�NK=$EG{�HOS�J�=Lh�ACI�E�ADH#c�N0{�=�JK=6E�=�N:E�=�h�@p=�I�>W�N�=6Hd�E�<�=�S+HN�N�AD@�ACBDADEGFOE�<�>�EvE�<U=�J�=LE�J�AD=LP�>BH#JbhU=�I�ADN�ADH#càS�J�H(I�=LN�NK=�N��wHJb@pHE�<§�QACc�ILH#i#c�AME�AMP#=�>�J�ADE�<�R�=LE�ADI`JK=�g%W�ADJ�=�>�EKE�=Lc%E�ACH#c�>B�J�=�~N�H#WUJ�I�=LN�ACcu{�H#J�f%ADc�i8R�=�R�H#JKFkn; <�=LJ�=Ld�HJ�=�j@jFuN�<�H}{4ACcUi8E�<�>�E\E�<�= hUAD�+=�J�=Lc�I�=0@+=�EG{0=L=�c=�>N:F ��h�A���ILW�BDE$S�JKH#@�BC=LRTN�P�>JKAC=�N�{4AME�<xRT=LRTH#J:F�BDHj>hx>c�h���H#J�E�<�>�E6E�<�=t>�N�N�H(I�AC>�E�AMP#=I�H#c!d�W�N�ADH#c�=���=LILE?I�>c^@+=6ACcUI�J�=�>N�=Lh�@jF�{0HJ�f%ACc�i�R�=�R�H#JKF�H}P=�J�BDHj>h�{0HW�BCh^h�=�R�H#c!~NKE�J�>�E�=6E�<�=6J�H#BD=�Hdz{0H#JKf%ACc�i�RT=LRTHJKFTACc�N�ADRTS�BD=8I�Hi#c�ADE�ADP=6>J�AME�<�R�=LE�ACIk

�\*��������1§9���z.0/� Gc-E�<�=TS�J�=LN�=Lc%E�=��USp=�JKACR�=�cjE�NL��{0=TE�=�N:E�=Lh�E�<�=t=���=LILEOHd4SUJ�H#@�BD=�R h�A �TILW�BDEGFs>cUh

>N�NKH!ILA�>�E�ADP=uI�HcUd�W�N�ADH#c�ADc�h�AD�+=�JK=�cjE8R�=�R�H#J:F^BDHj>h^I�H#c�hUADE�ADH#c�N4{4ADE�<�@+H�E�<à>hUh�ADE�ACH#c>c�hØR�W�BME�ACSUBCACI�>�E�ADH#c�S�J�H#@UBC=�R�N�k �?c�h�=LJ�i#J�>h�W�>�E�=�N�P=�J�A���=�hoN�ADRTS�BD=à>h�hUADE�ADH#c >cUhR�W�BME�ACSUBCACI�>�E�ADH#c�S�JKH#@�BC=LRTNOE�<�>�Et{�=�JK=�S�J�=LN�=Lc%E�=�hÖACc�RTA �U=Lh�@�BDH!IXf%NTHd�E�JKA�>BDN�k ��=IX<�H#NK=QE�H$ADcjE�=�JKRTA �uE�<�=�NK=?SUJ�H#@�BD=�R�NV@+=LI�>WUN�= ��@�J�H(h�H�Y>c�hT��Hij>ce�ÇNQ� �}È Z��UÊ%N�=L=?>�BCN�H�r=�RT>ACJK=�=LEu>BlkM� �}È#ÈU� Ê �}ÈÈ ]%� ��c�hUACc�i#N$N�WUi#i#=�N:E�=LhsE�<�>�E6E�<�=T>N�NKH!ILA�>�E�ADP=�I�H#cUd�WUN�ACHc=L�+=�I�EbADN <�=�ADi#<jE�=�cU=�h�W�c�h�=LJQE�<�=�NK=$ILH#c�h�AME�ADH#c�N�k��W�JKE�<�=�JKRTH#JK=�(E�H�ACcjP=�NKE�ACij>�E�=8E�<U=�S+H#NKN�AD@�ACBDADEGF�E�<�>�E H#c�=�H�dzE�<�=8{�H#J�f%ACcUi�RT=LRTH#J:F

I�H#R�SpH#c�=�cjE�N\ADNeP#=�J:F$ACR�S+H#J:EX>cjErADc$E�<�=VP#=LJ�A%��I�>�E�ACH#c$Hd!N�ACR�S�BD=�>J�AME�<�R�=LE�ACI�S�JKH#@�BD=�R�N��{0=`=�R�S�BCH}F=�h�d�H#WUJQ=��!S+=LJ�ACR�=�cjE�>B\ILH#c�h�AME�ADH#c�N�k Gc^E�<U=uI�Hc%E�J�H#B�ILH#c�h�AME�ACHce��N�W�@%|K=�ILE�N{0=LJ�=YSUJ�=�NK=�cjE�=Lh�>^NKE�>c�h�>�J�h�P=�J�A���I�>�E�ACHcsEX>�N�fà{4ADE�<�c�H^I�H#c�ILW�J�JK=�cjE�E�>N�f§k Gc�E�<�=��J�N:E �>J:E�ADI�W�BC>�E�H#J:F�N�WUS�S�J�=LN�NKACH#c ��ILH#c�h�AME�ADH#ce�NKW�@(|K=LILE�N�{�=�JK=vJ�=Lg%W�ACJK=�h�E�HbJ�=�Sp=�>�E�=�hUBDFN�>�F :E�<U=�� �w¨�¡qACcT�§JK=�c�IX<����%{4<�ACBD=QSp=�J:d�H#J�R�ACcUi6E�<�= P#=LJ�A%��I�>�E�ACH#cOEX>NKf§k GcTE�<U=?NK=�I�Hc�h

Page 9: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � 2�)

>JKE�ACILW�B�>�E�H#JKF`N�WUS�S�J�=LN�NKACH#c�EX>NKf���KI�>c�H#c�ADI�>BUBC=LEKE�=LJ�N �j���jN�WU@(|K=�I�E�N�{�=�JK=b>�N�f=LhTE�H$P=�J:~@�>BDBDF�JK=�Sp=�>�E�=�h K>@+ILh�=Ld ��kV�\ACc�>BDBDF�#ACcOE�<�=QB�>�NKEq=��!Sp=�J�ADRT=LcjEX>B§I�Hc�h�ADE�ACH#c^� KJ�>cUh�H#RBC=�E�E�=LJ�N �%���!N�W�@(|K=LILE�Nv{0=LJ�=�>NKf=LhYE�H�i#=Lc�=�J�>�E�=Q{4ADE�<�H#WUE0NKE�HS�S�ACcUi�>uJ�>c�h�H#R�NK=�J�AD=�NvH�dBC=�E�E�=LJ�N�{4ADE�<�ACc�E�<�= �>@pI�hU=Ld �^NK=LE�k�; <U=OEG{�H^>JKE�ACI�WUB�>�E�H#JKF^N�W�SUS�J�=LN�N�ADH#cxI�H#c�hUADE�ADH#c�N{0=LJ�=`W�N�=Lh�E�H�h�=LE�=�JKRTADc�=�{4<�=LE�<�=�Jb>JKE�ACI�WUB�>�E�H#JKFtN�W�S�SUJ�=�NKN�ADH#c�<�>N?>c�=L�+=�I�EbH#c�E�<�=P#=LJ�A%��I�>�E�ACH#c�HdzNKACR�S�BC=b>J�AME�<�R�=LE�ACIQS�J�H#@UBC=�R�N��}|KW�NKEQ>�NvADE <�>N4>c�=L�+=�I�E4H#c�I�HW�cjE�ACcUi���rH#i#AD=OÌ Òv>�h�h�=�BD=LF� ��È Z Ï Ê �?=�>BDF�Ì Ëb>�ACJ�cU=� �}È Z#É!ÊzËb>ADJ�c�=OÌ �?=�>�BDF#� �}È Z â �b>cUhH#c�I�H#R�S�BC=���>�J�ADE�<�R�=LE�ADIy� �QADE�IX<e� �}ÈjÏ Z#>à>�c�h @�Ê �rH#i#AC=�=�E�>BlkM� �}È#È ]j��k��^HJ�=�H}P=�J��E�<�=bI�>c�Hc�ACI�>B§BC=LEKE�=LJ0I�Hc�h�ADE�ACH#cO{0>NvW�NK=�hYE�HuI�H#cjE�JKH#B§E�<�=Qdw>ILE�E�<�>�Ev>cjF�h�ACNKJ�W�SUE�ACH#cHd4E�<�=Y>N�NKH!ILA�>�E�ADP#=tI�H#cUd�WUN�ACHc�=L�+=�ILE�ACc-E�<U=YJ�>cUh�H#R BC=LEKE�=LJ�I�H#cUh�ADE�ACH#cx{0H#WUBCh�c�HE@+=�h�WU=^NKACR�S�BDFxE�HàE�<U=�dw>I�E�E�<�>�ETNKW�@(|K=LILE�NT<�>h�E�HxS�JKH!h�WUI�=�N�A ��h�AD�+=�JK=�cjE�ADE�=�R�N�kmbBME�=�JKc�>�E�ADP#=LBDF�i#=Lc�=�J�>�E�ADc�iYJ�>c�h�H#R NK=�J�AD=�N?Hd�N�A ��AME�=LRTN4{v>�N8=��!Sp=�ILE�=�hàE�HTH}P#=�JKBCHj>�hE�<�=6IL=�cjE�J�>B�=��!=�ILWUE�AMP#=$NKF(NKE�=�R ACc�{�H#J�f%ACcUi�R�=�R�H#J:Fy��Ò0>h�h�=LBC=LF� �}È Z��#��k

�E�I�HW�BChÖ@p=à>J�iW�=�h E�<�>�E�H#W�JtN�=�ILH#c�h�>�JKFÓE�>N�f%N�{0=LJ�=yc�HEYH#c�BDF g%W�>BDADEX>�E�ADP=�BMFh�AD�+=�JK=�cjE6��AlkÇ=kM�jEX>S�SUACc�i`h�AD�+=�JK=�cjE0ILH#R�S+H#cU=�cjE�N�Hde{�H#J�f%ACcUiuR�=�R�H#JKFU�V@�WUE0>BCNKHuSpH#N:~N�=LN�N�=Lhyh�AD�+=�JK=�cjE8h�=Li#J�=L=�N8H�d�h�A���I�WUBDEGF#k �QH�{�=LP=�JL��>NbSpH#ACcjE�=�h�HWUE8@jF���Hi#AC=6=LE8>BlkM�� �}ÈÈ ]%����� � �VE�<�=�JK=8ACN�c�HO¦ &+©�¤w¥}©�¤§J�=�>N�H#cYE�H�N�WUN�Sp=�ILE0E�<�>�E�E�<�=LN�=bE�>N�f%N0P�>J:FtN:F(NKE�=LRO~>�E�ADI�>BDBDFuACc�h�A���I�WUBDEGFpÊe� Ü �nE�<�=Q=�N:E�ADRt>�E�=�h�h�A���ILW�BDEGFOHd+E�<�=LN�=QEX>NKf(N�<�>Nq@+=L=�cYNK<�H}{4cE�HO@p=6>�S+H(H#JvS�JK=�h�ADILE�H#J�N HdzNKW�@(|K=�I�E�NL�pSp=�J:d�H#J�RT>c�IL=�ACc�h�W�>BM~lEX>NKfTILH#c�h�AME�ACHc�N6�w=�kßiUkD��ÖACIXf�=�c�NuÌ ��=LACij>J:E�c�=LJ�� �}È Z#É#��Ên>c�h�� â �bE�<U=�N�=�EX>NKf%Nu<�>�P#=T@+=L=�csN�<�H}{4c�E�H^<�>�P=ACc�hU=�Sp=�c�h�=LcjEb=���=LILE�NLk�mbN {0=�{4ADN�<�=Lh�E�H�S�ACc�SpH#ADc%E0{4<�>�E4S�>J:E�ADI�W�BC>J0{�H#J�f%ACcUi�R�=�R�~H#JKFyNKW�@!~�NKF(NKE�=�R ACN6I�JKADE�ACI�>�Bl��{�=TcU=�=�hU=�h�E�H^W�NK=TNK=�ILH#c�h�>J:FyEX>NKf(N6E�<�>�E`>J�=Of%c�H}{4cE�HT>��+=�ILE4hUAD�+=�J�=LcjEQ{�H#JKf(ADc�i�RT=LRTH#J:FtNKW�@!~�NKF(NKE�=�R�N�kÒ0=�I�>W�NK=b@�>NKACIQ>JKADE�<URT=�E�ACIvdw>�ILE�Nq>JK= ��J�NKE�BC=�>J�cU=�h�@%F�R�=�>cUNqH�deH#J�>B�J�=LS+=�E�ADE�ACH#cUN��

ADEnI�H#W�BDh�@+= ILH#cjE�=Lc�h�=�hOE�<�>�E�E�<U=vS�<�H#cUH#BCH#iACI�>�B!BDH!H#SuACN�>8SUJ�ADP(ADBC=�i=�h�S�>�E�<j{v>�F�E�H8E�<�=N�H#BDWUE�ADH#c�Hd\>�N�ADRTS�BD=bS�JKH#@�BD=�R ADcYE�<�=�R�=�R�H#J:Ftc�=�EG{0HJ�f§k�; <UACNvP(AC=�{ÔS�JK=�h�ADILE�NvE�<�>�E�wB�� E�<�=uS�JKH#@�BD=�R h�A �TILW�BDEGF�=���=LILEO��AlkÇ=kM�+=�>NKFj~�h�A���I�WUBDE?S�J�H#@UBC=�R h�AM��=LJ�=Lc�I�=��4{4ACBDBr@+=i#J�=�>�E�=LJ ACcYILH#c�h�AME�ADH#c�N0{4<�=LJ�=8E�<�=�S�<�H#cUH#BCH#iACI�>�BpN:F(NKE�=LR ACNvH}P=�J�BDHj>h�=Lh�>c�hs� Ü �qE�<�=>N�NKH!ILA�>�E�ADP=8I�H#c!d�W�N�ADH#c�=L�+=�I�Ev{4ACBDB�>BDN�H�@p=8=Lc�<�>c�IL=�h�ACctE�<�=8S�<UH#c�H#BDH#i#ACI�>B§H}P#=�JKBCHj>�hI�H#cUh�ADE�ACH#cekbmbcx>BDE�=�JKc�>�E�AMP#=$P!AD=L{ {�H#W�BChàN:EX>�E�=uE�<�>�E�R�H#NKEbI�H#i#cUADE�AMP#=`S�J�H(I�=LN�N�=LN6ACc!~P#H#BMP#=LhYACcOI�Hi#c�ADE�ADP=?>�J�ADE�<�R�=LE�ADI0EX>�f=bSUB�>IL=QADc�E�<�=QI�=Lc%E�J�>Bp=��!=LI�WUE�ADP#=?NKF(NKE�=�R�kV; <�ACNP(AC=L{�S�J�=Lh�ACI�E�N�E�<�>�E?�wB��zE�<U=QSUJ�H#@�BD=�R h�A���ILW�BDEGFu=L�+=�ILE�{4ADBCBU@p= i#JK=�>�E�=�J�ACc�E�<�= I�=Lc%E�J�>B=��!=�ILWUE�AMP#=6H}P#=LJ�BCH#>hYI�Hc�h�ADE�ACH#c��wA�kß=��!ADctE�<�=bJ�>c�hUH#R BD=LEKE�=�JKN0ILH#c�h�AME�ACHc§�q>�c�hx� Ü �VE�<�=>N�NKH!ILA�>�E�ADP=QILH#cUd�W�NKACH#c�=L�+=�I�E�{4ADBCB�>�BCN�H6@p=4B�>JKi#=�JVADc�E�<�=4I�=�cjE�J�>B§=��!=LI�WUE�ADP#=?H}P#=�JKBCHj>�hI�H#cUh�ADE�ACH#cekq; <�=LN�=`EG{�HtSUJ�=�hUACILE�ACH#cUN4{�=�JK=`E�=�NKE�=�h^ACc ���!Sp=�JKACR�=�cjE � W�NKACc�i�J�=LS+=�>�E�=LhRT=�>N�WUJ�=�N4H#c�E�<�=6H#S+=LJ�>�E�ACH#cYdw>�ILE�HJ�kV; <�>�E4ADN���NKW�@(|K=LILE�NQ{0=LJ�=6S�JK=�N�=LcjE�=�h^{4ADE�<�@pHE�<>h�h�AME�ADH#c�>c�h�R�W�BME�ACSUBCACI�>�E�ADH#c�S�J�H#@UBC=�R�N�k

Ü k � k��y¡� w­+¥ �§®

Page 10: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

2�� ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

Ü k � k � k$¯§¿�����µX·�º�¾�Å4;v{0=LcjEGF�ACcjE�JKH!h�WUILE�HJKF�S�NKF(IX<�HBCH#iFtNKE�W�h�=�cjE�N$��Z�RT>BC=LN0>cUh ��Ü d�=�~Rt>�BC=�N��0>�E E�<�=��z£�¤ !�¡�©�ª�¤l �¡ ��¡�Q¥%«© �U¥��j£+¡��¦��8¤ ��¥}£�J�=�IL=�AMP#=�h^>�I�BC>N�N ILJ�=�hUADEvd�H#J S�>J:~E�ADI�ACS�>�E�ADc�i�ACcàE�<U=T=��USp=�JKACR�=�cjE�kT; <�=�RT=�>c�>�i#=OHd�E�<�=�N�W�@(|K=LILE�Nu{v>�N Ü!� k Ü �wJ�>c�i#=d�J�H#R � ZUk ���UÜ �Uk Ï ��k�mbBDB�N�WU@(|K=�I�E�Nb<�>h^cUH#J�RT>B�HJQILH#J�JK=�I�E�=�h(~�E�H�~Gc�H#JKRt>�B+P(ACNKACH#cekÜ k � k Ü k$¯§ºw°²À�¿!´Á°u¸± )�¸�¹j¹U¸½�¸ºw¿j¾�Å?; <�=àNKE�ACR�WUBCA4{0=LJ�=x>h�h�AME�ADH#cÓ>cUhØRuW�BDE�ACS�BDACI�>�E�ACHc=�g%W�>�E�ACH#cUNrS�J�=LN�=�cjE�=�huADc6NKEX>�c�h�>JKh6d�HJ�Rã�wAlkÇ=kM���([��4_��nH#J�� � �4_��L��kz; <�=�=�g%W�>�E�ACH#c�NJ�=LS�J�=LN�=�cjE�=�hÓ>�BCBqI�H#R�@UACc�>�E�ACH#cUNuHd4h�ADi#ADE�N`d�JKH#R Ü��!â E�<UJ�H#W�i< È��!È ksÆ8c�=�>c�h��L=�JKH{0=LJ�=�c�HE6ADc�I�BDW�h�=�hx@p=�I�>�W�N�=OADE6ADN�i#=�cU=�J�>�BCBDF^@p=�BCAD=LP=�hyE�<�>�E6NKW�@(|K=LILE�N`h�H�c�HE$N�HBDP#=E�<�=LN�=4S�JKH#@�BC=LRTNV@jFuJ�=LE�J�AD=LP(ACc�i8E�<�=4N�H#BDWUE�ADH#c�h�ADJ�=LILE�BMFud�JKH#R R�=�R�H#J:Fu@�W!E�ACc�N:E�=�>�h�@jFJ�=�E�J�AD=LP(ACcUiuJ�WUBC=�Nb�w=�kßiUkD��� � Ý$_ÔÝj��E�<�>�E0iW�ACh�=4E�<U=�ACJqN�HBCWUE�ACH#c��wNK=�=bm?N�<�ILJ�>�d²E�� �}È Z Ü ÊÒv>JKH!H(hUF#� �}È ZjÉ��k�; <�=b=�g%W�>�E�ACH#c�N Ü [ Ü >�c�h Ü ��Ü {�=�JK=�c�HEvADc�I�BDW�h�=Lh�@+=LI�>W�NK=8E�<�=N�W�R >c�h�S�J�H(h�W�I�E8Hd�E�<�=�NK=�H#Sp=�J�>c�h�Nb>J�=`ACh�=Lc%E�ACI�>Blk ; <�=uJ�=�NKW�BDE�ACc�iTN�=�E8I�Hc�N�ADNKE�=LhHd � â E�J�W�=t>h�h�AME�ADH#c�S�JKH#@�BD=�R�Nu>cUh � â E�J�W�=TR�W�BDE�ACS�BDACI�>�E�ADH#càS�J�H@�BC=LRTNLk�m NK=LE�H�ddw>BCNK=TSUJ�H#@�BD=�R�N${0>Nu>BCNKH�I�JK=�>�E�=�hek^��H#J$=�>IX<-=Lg%W�>�E�ADH#ce�\@+HE�<->�ILH#cUd�W�NKACH#c�>c�h�>c�H#c!~�I�H#c!d�W�N�ADH#cYS�JKH#@�BC=LRÛ{0=LJ�=8i=�c�=LJ�>�E�=�hek �Ö<�=LcYE�<�=?=�g%W�>�E�ACH#cYADcjP#H#BMP#=�hY>h�h�AME�ACHce�E�<�=��tE�=�J�R d�H#J�E�<�=�ILH#cUd�W�NKACH#c�S�JKH#@�BC=LR {0>NOE�<�=�S�JKH!h�WUILEOHdQE�<�=�EG{�H�H#Sp=�J�>c�h�N� â [�É$_ � É����>cUh�d�HJ4E�<�=6R�W�BME�ACSUBCACI�>�E�ADH#c�S�J�H#@UBC=�R�N�� �?{v>�NQE�<�=6N�W�R � â � É`_ØZj��kË?H#c(~GI�HcUd�W�N�ADH#c�S�J�H#@UBC=�R�N {0=LJ�=u>BCNKHTi#=Lc�=�J�>�E�=Lh�NKW�IX<�E�<�>�E!�b{0>N?c�=�AME�<�=LJ4E�<�=$N�W�Rc�H#J�E�<�=QS�JKH!h�WUILE�Hd"��>cUh#�6��=kÇi�kD� â [àÉ6_ Ï ��k�; <�=$�vE�=LJ�R�Nqd�H#JVE�<�=?cUH#c!~GILH#cUd�W�NKACH#cS�J�H@�BC=LRTN�{0=LJ�=8IX<UH#N�=Lc�N�H`E�<�>�E�E�<�=Qh�AD�+=�JK=�c�IL=8@p=LEG{�=�=�cYE�<�=bILH#J�JK=�I�E >c�N:{0=LJ0E�H$E�<�==�g%W�>�E�ACH#c�>�c�h-E�<�=%�OE�=LJ�R ��AlkÇ=kM��E�<�=tN�S�BDADE��6Rt>�E�IX<�=Lh-E�<�=�ILH#J�JK=�N�SpH#c�hUACc�iàNKS�BCAME�ACcE�<�=�I�HcUd�W�N�ADH#c�I�H#cUh�ADE�ACH#co�wNK=�= ��@�JKH!h�H��ÖÌ �rH#ij>c�� �}È Z��UÊ �r=�RT>ADJ�=�=LET>B�kD� �}ÈÈU� Ê�}È#È ]j��k0; <UACN4{v>NQc�=LI�=�NKN�>J:F�@p=�I�>W�NK=�N�H#R�=6I�H#c!d�W�N�ADH#c�S�JKH#@�BD=�R�N <�>�P#=uBC>J�i=$NKS�BCAME�N�w=�kßi�kM� È [ È _ Z � �Q>�c�h^E�<�=uNKS�BCAME?ADN4f(cUH�{4c�E�Ht>���=LILE8JK=�>I�E�ADH#c�E�ACR�=6ACc^>J�AME�<�R�=LE�ACIP#=LJ�A%��I�>�E�ACH#càEX>�N�f%NT�wmbNK<�I�J�>�d²E$Ì Ò0>�E�E�>i#BCAC>U� ��ÈjÏ ZUÊ ��@�JKH!hUH��Ì ��Hij>ce� ��È#È Ýj��ku;zH=�g%W�>�E�=�E�<�=ON�S�BDADE�N���E�<�=�>c�NK{�=�J6E�H�E�<�=Oc�H#c!~�I�H#cUd�WUN�ACHcxSUJ�H#@�BD=�R {v>N6=Lg(W�>BVE�H�E�<�=>c�N:{0=LJuE�H�E�<�=tILH#J�JK=�NKS+H#cUh�ACc�i^I�H#c!d�W�N�ADH#c-S�JKH#@�BC=LR S�BCWUN`H#J`RTADc%W�N`Hc�=k^Ò0=�I�>W�NK=E�<�=OILH#J�JK=�ILE`>cUNK{�=�J�N`>c�hàE�<�=O>c�N:{0=LJ�N6E�H�E�<�=OILH#cUd�W�NKACH#cyS�JKH#@�BC=LRTN?d�H#J6>h�h�AME�ADH#c�N>c�hÓRuW�BDE�ACS�BDACI�>�E�ACHc�N`{�=�JK=�E�<�=�ACcjP=�J�NK=�Hd�Hc�=�>cUHE�<�=LJ��0E�<�=�NKS�BCAME�h�ACh c�HE�P>�JKF>I�JKH#N�NtH#S+=LJ�>�E�ACH#cUN�k ��>IX<ÓHdbE�<�= ��Ü �xE�J�W�=^=�g%W�>�E�ACH#cUNY>S�Sp=�>�J�=�h EG{4ACI�=�� N�HxE�<�>�EE�<�=�N�WU@(|K=�I�E�NYN�>}{ Ü É Ü E�J�WU=^=Lg(W�>�E�ADH#c�NT>c�h Ü É Ü dw>BCNK=^=Lg(W�>�E�ADH#c�N^�w<�>�BDd8H�db{4<�ADIX<{0=LJ�=sI�H#cUd�WUN�ACHcoS�JKH#@�BD=�R�NX��k Ò0HE�<ØE�J�W�=x>cUhodw>BDN�=àS�JKH#@�BC=LRTN�{�=�JK=sI�>�E�=Li#H#J�AD��=Lh>N8ADc%PH#BDP(ADc�it=�>NKF�>c�hàh�A ��I�W�BMEbS�JKH#@�BD=�R�N�kb; <U=�>J�AME�<�R�=LE�ACI6S�JKH#@�BC=LRTN?<�>�P#=�@p=�=Lch�=�NKI�JKAC@p=�h$ACc8E�<U=VBCADE�=�J�>�E�W�JK=V>Nr@p=�ADc�i =�>N:F�H#Jrh�A ��I�W�BMEed�H#Jr>hUW�BDE�Nr@�>N�=Lh`Hc�h�A���I�WUBDEGFJ�>�E�ACc�itN�I�>�BC=�NT��mbN�<UI�J�>�d²E��ÇN�ACc�h�=��+ÊzNK=�= �b>�Rt>cUcyÌÞm?N�<�ILJ�>�d²E�� �}È ZjÉ!Ê�á�H#NK<�R�ACh�=LJ8ÌmbNK<�I�J�>�d²E�� �}È#ÈU� ��k�; <�ACN�R�=�>NKW�J�=�<�>N�@p=�=Lc`h�=LN�ILJ�AC@p=�h`ACc8E�<�=�BDADE�=�J�>�E�W�JK=V>N�H#c�=�Hd(E�<�=@+=LNKE\S�J�=Lh�ACI�E�H#JKN\H�d�S�JKH#@�BC=LRÎh�A �TILW�BDEGFk\;zHbhU=LE�=LJ�R�ACc�=V{4<�=�E�<�=LJ�>4S�J�H@�BC=LRÔ{v>�N\=�>NKFH#J$h�A���I�WUBDE��r{�= ��J�NKEuI�H#R�S�WUE�=�hyE�<�=�R�=�h�AC>csm?N�<�ILJ�>�d²E��ßN`h�A���ILW�BDEGFàADc�h�=���kt; <�=�ce�S�J�H@�BC=LRTNr{4ADE�<`NKRt>�BCBC=LJrh�A���ILW�BDEGF8P�>BDW�=�N�{�=�J�=�I�>�E�=�i#HJ�AC�L=�h`>Nz=�>N:F6S�J�H#@UBC=�R�N���� _Ü É Ü �6>c�hsS�J�H@�BC=LRTN6{4ADE�<�<�ADi#<�=�J6P�>BCWU=�N6{0=LJ�=YI�>�E�=Li#H#J�AD��=Lh->N$h�A���ILW�BDE`S�J�H@�BC=LRTN

Page 11: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � 2,;

��� _ Ü É Ü ��kz; <%W�N��E�<�=qRT=�>c`hUA���I�W�BMEGF�{v>�N � � È P#=�JKN�W�N � Z � d�H#Jz=�>N:F�P#=LJ�N�WUN�h�A���ILW�BDE>h�h�AME�ADH#c�N4>c�h � â ]�P#=LJ�N�WUN � � È d�H#J =�>N:F�P#=LJ�N�WUNbh�A �TILW�BDEvR�W�BDE�ACS�BDACI�>�E�ADH#c�N�kÜ k � k â k���½�Ã}·Xµ )¿!½�µ�Å4; <�=�NKE�ADR�W�BDAq{�=�JK=�SUJ�=�NK=�cjE�=Lh <UH#J�AD��H#cjEX>�BCBDFxADc-E�<�=�IL=�cjE�JK=�Hd?>I�H#R�S�WUE�=�JQN�ILJ�=�=Lc�� ¢Òv� ÐqÑ � Ü ��k ��>IX<^E�J�AC>Be@p=�ij>�c�{4AME�<^> Ï É�Ý�~GR�N�=LI$JK=�>h!F�N�ACic�>B��>tBDACc�=6Hd �UP#=�>U�ÇNX� {4<�ACIX<�>S�Sp=�>JK=�h�ADc^E�<U=�I�=Lc%E�J�=�H�d�E�<�=`N�ILJ�=�=Lcek8; <�=u=�g%W�>�E�ACH#c�N{0=LJ�=�ADc�E�<�=Td�H#J�R �u[ �t_ � ��H#J � � �Y_ � � �à; <�=tNKF(R�@pH#BCNu>c�h�h�ADi#ADE�N${�=�JK=N�=LS�>J�>�E�=�h�@%F�NKS�>I�=LNY=�g%W�>�BQE�HsH#cU=�~G<�>BDdbHd8E�<U=�{4ADhUE�< Hd�=�>�IX<ÓIX<�>J�>ILE�=�J�k ; <U==�g%W�>�E�ACH#cUNbJ�=LRt>�ACc�=Lh^H#c^W�cjE�ADB�E�<�=uNKW�@(|K=LILE�JK=�N�SpH#c�hU=�hekbÑ!W�@(|K=LILE�Nb{0=LJ�=�ADc�NKE�J�W�I�E�=LhE�H�JK=�N�SpH#c�h :E�J�W�= ��H#J :dw>BDN�= �8@jF�S�JK=�N�NKACc�i�E�<�= >S�SUJ�H#S�JKA�>�E�=0f�=LF�H#c�E�<�=vf�=LF(@+H#>J�hek; <�= KR �T>c�h Kg �tf�=LF(Nb{�=�J�=`h�=�NKACi#c�>�E�=Lhà>N4E�J�WU=u>cUh�dw>BCNK=kvm?BCB�N�WU@(|K=�I�E�Nb{�=�JK=ACc�N:E�JKW�ILE�=�h�E�H�W�NK=�E�<�=LACJvBD=Ld²E >�c�h�J�ACi<%EvACc�h�=�� ��c�i#=�JKN E�H�S�JK=�N�N E�<�=�NK=�f=LF(NLʧd�HJv<�>BMdHdVE�<U=uN�WU@(|K=�I�E�N�E�<�= KR �tf=�F�{0>N8h�=LN�ADi#c�>�E�=�hà>NQE�JKW�=�>c�h^d�H#J?E�<�=uHE�<�=�J?<�>BMdVADE{v>�N?h�=LN�ADi#c�>�E�=�h^>Nvdw>BCNK=k��>IX<�N�W�@(|K=LILE {0>N J�>�c�h�H#R�BDFT>NKN�ACic�=�hYE�H�H#c�=8HdrE�<�=8d�H#W�J�RT=LRTHJKF�BCHj>�hYI�H#cUh�AM~

E�ADH#c�N�k�; <�=$I�H#cjE�JKH#B�I�H#cUh�ADE�ACH#c�R�ACR�ACIXf=Lh�E�<�=$NKE�>c�h�>JKh^P=�J�A���I�>�E�ACHc�E�>N�f%NbADc�E�<�>�Ec�H�ILH#c�I�WUJ�J�=LcjEvEX>NKf�{v>N�J�=Lg(WUACJ�=LheÊ!E�<�=bNKW�@(|K=LILE�N R�=�JK=�BMF�P#=�JKA%��=Lh�>JKADE�<URT=�E�ACI4S�JKH#@!~BC=LRTNLk Gc�E�<�=$>JKE�ACI�WUB�>�E�H#JKF�N�WUS�S�J�=LN�NKACH#c^I�H#c�hUADE�ADH#ce�(E�<�=6N�WU@(|K=�I�E�N?{�=�JK=`JK=�g%W�ADJ�=�h�E�HJ�=LS+=�>�E�=Lh�BDF�N�>�FtE�<U=6{�H#JKh ¢E�<�= ��kV; <�ACN4ILH#c�I�WUJ�J�=LcjEQE�>N�f�{v>�NQNKW�S�SpH#N�=Lh^E�H�h�ACN:E�W�JK@E�<�=uH#S+=LJ�>�E�ACH#c�HdVE�<�=uS�<UH#c�H#BDH#i#ACI�>BrBCH(H#Sek Gc�E�<�=uI�>c�H#c�ADI�>BzBC=�E�E�=�JbILH#c�h�AME�ADH#ce��E�<�=N�W�@%|K=�ILE�N`{�=�JK=TJK=�g%W�ACJK=�hyE�H�J�=LS+=�>�E�=Lh�BDFàN�>�F�E�<�=ON:EX>c�h�>J�hxN�=LJ�AC=LN`H�d �>�@+ILh�=Ld ��BC=�EK~E�=LJ�N�kO; <�=OJ�>c�h�H#R BC=LEKE�=LJ�I�H#c�hUADE�ADH#c�JK=�g%W�ACJK=�hyE�<�=ONKW�@(|K=�I�E�N$E�H�i#=�cU=�J�>�E�=�{4ADE�<�H#WUENKE�H#S�S�ADc�iu>6J�>�c�h�H#RÛNK=�JKAC=�NqHd+BC=�E�E�=LJ�NVd�J�HRãE�<�=QN�=�EqHd�E�<�=?NKAM���ß>@pI�h�=�d��jBD=LEKE�=�JKN�k�; <U=>JKE�ACILW�B�>�E�H#JKF`N�WUS�S�J�=LN�NKACH#ct>c�hOI�>cUH#c�ACI�>B�BD=LE�E�=�JVILH#c�h�AME�ACHc�N�{0=LJ�=QJ�W�c�E�H`h�=�E�=LJ�R�ACc�={4<�=LE�<�=�J6>�JKE�ADI�W�BC>�E�HJKF�NKW�S�S�JK=�N�NKACH#càJK=�NKW�BDE�NbACc�ACR�S�>ACJK=�h�Sp=�JKd�HJ�RT>c�I�=�k��^HJ�=�H}P=�J��E�<�=�I�>�c�H#c�ADI�>B4BC=�E�E�=�JOI�H#cUh�ADE�ACH#c�{v>�Nt>hUH#SUE�=Lh E�H�I�Hc%E�J�H#B d�H#J�E�<�=�dw>�ILE�E�<�>�Et>cjFh�ACNKJ�W�S!E�ACHctHdrE�<�=bILH#cUd�W�NKACH#cY=���=LILE ADcTE�<�=bJ�>c�h�H#R�BD=LE�E�=�J�I�H#c�hUADE�ADH#cO{0H#WUBChY@p=8h�W�=E�H�E�<U=�N�W�@(|K=LILE�N`<�>�P(ACcUi�E�H�i#=�c�=LJ�>�E�=O>�E6J�>�c�h�H#R N�=�JKAC=LN$H�d�BD=LEKE�=�JKN�k���H#J?E�<�=�E�<�J�=L=I�H#cUI�W�JKJ�=�cjE�EX>NKf�I�H#c�hUADE�ADH#c�NL�jN�W�@(|K=LILE�N�{�=�J�=?J�=Lg(WUACJ�=Lh�E�H`N�>�FOH#c�=4ADE�=�RÛ=�P#=�J:F Ü NK=�Ik

Gc =�>IX<�=��!S+=LJ�ADRT=Lc%E��v>BDB0NKW�@(|K=�I�E�N�{0=LJ�=�S�J�=LN�=�cjE�=�h�{4AME�<�E�<�=�N�>RT=�S�JKH#@�BD=�R�N�k; <�=�NK=tS�JKH#@�BD=�R�N8{0=LJ�=tJ�>c�h�HRTBMF�H#JKh�=�JK=�hxd�H#J6=�>IX<xN�W�@%|K=�ILE`{4ADE�<xE�<�=OJ�=�N:E�JKACILE�ACH#cE�<�>�Etc�HsRTHJ�=�E�<�>�c d�H#W�JOILH#c�N�=LI�WUE�ADP=�E�JKA�>BDN�I�H#W�BDh�JK=�g%W�ACJK=�E�<�=�N�>R�=^JK=�NKS+H#cUN�=k; <�=tN:E�ADR�W�BCA\{0=LJ�=�S�J�=LN�=�cjE�=�h�ACcyd�H#W�J ��Ü ��SUJ�H#@�BD=�R E�J�A�>�B�@�BCH(IXf%N�Ê�=�>IX<�@UBCH(IXf�{v>�NI�H#R�SpH#N�=Lh-Hd � â E�J�W�=t>c�h � â dw>BCNK=TSUJ�H#@�BD=�R�N�k^; <�=YN�WU@(|K=�I�E�N�{�=�J�=tS+=LJ�R�ADE�E�=�h�>É�~GR�ACc�JK=�N:E?Sp=�JKACH(h�@+=�EG{0=L=�c�@UBCH(IXf(NLkÒ0=Ld�HJ�=YE�<U=�=��!S+=LJ�ADRT=Lc%E�>B�E�J�AC>BCNL�nE�<�=�NKW�@(|K=LILE�N�ACc-E�<�=�I�Hc%E�J�H#B0I�H#c�hUADE�ADH#c�{�=�JK=

i#ADP=�cÖEG{0H�NK=LE�N�Hd Ü Ý�S�J�>ILE�ACI�=�E�J�AC>BCNYADc H#J�hU=�JYE�H�dw>R�ACBDA�>JKACNK=�E�<�=�R�N�=LBDP=�N�{4ADE�<E�<�=t>S�S�>�J�>�E�W�N���SUJ�H(I�=�hUW�J�=���>c�h-N:E�ACRuW�BCW�N$h�ADN�S�BC>}Fk��§HJ$E�<�=tHE�<�=�J`=��!Sp=�J�ADRT=LcjEX>BI�H#cUh�ADE�ACH#c�NL� E�<�=àNKW�@(|K=�I�E�N�{�=�J�= ��JKNKE�JK=�g%W�ADJ�=�h E�H�S�J�>I�E�ADN�=�E�<�=àI�H#cUI�W�JKJ�=�cjE�EX>�N�f{4ADE�<�>�RT=�E�J�Hc�H#R�=TW�cjE�ACB�E�<�=LFs{0=LJ�=�>@UBC=TE�HàN�>�F-Hc�=YADE�=�R =LP=�JKF Ü N�=LIkx; <�=�ce�E�<�=�FØS�J�>I�E�ADI�=�hØH#c�BMFÓE�<U=sILH#i#c�AME�ADP=x>J�AME�<�R�=LE�ACI�P=�J�A���I�>�E�ACHcØE�>N�fÓ{4AME�<ØH#c�=xN�=LE

Page 12: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

2�� ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

Hd Ü ÝySUJ�>I�E�ACIL=YE�JKA�>BDN�k��nADc�>BCBMF#�nE�<�=LF�SUJ�>I�E�ACIL=�h�E�<�=�EG{�H�ILH#c�I�WUJ�J�=LcjETE�>N�f%NO{4ADE�<>c�HE�<�=�JTN�=�E�Hd Ü ÝxS�J�>�ILE�ADI�=�E�J�AC>BCNOW�cjE�ACB4E�<�=�F d�=LBDETI�H#ROd�H#JKE�>@�BD=^>�c�hÓN�<UH�{�=�h cUH>S�S�>�J�=�cjE?S�J�H@�BC=LRTNLkV; <�=`NKW�@(|K=LILE�NQ{0=LJ�=6E�H#BDh�E�<�=LACJ R�=�>c�B�>�E�=�c�I�F�>c�h�=�JKJ�H#J J�>�E�=>�d²E�=LJ8E�<�=OS�J�>ILE�ACIL=�E�J�AC>BCN8>c�hx>�d²E�=LJ�=�>IX<x@�BDH!IXf§k Gc�N:E�JKW�ILE�ACH#c�N6=LRTS�<�>N�ADN�=�hxN�Sp=�=Lh>c�h�>�I�I�WUJ�>I�Fs=Lg%W�>BCBMF#k�mvE$E�<�=T=�c�h�Hd =�>�IX<-@�BCH(IXf§�nNKW�@(|K=�I�E�Nu{�=�JK=Yi#AMP#=�c�>^@�JKAC=�dJ�=LNKEQS+=LJ�ADH!hek ��>IX<�=��!Sp=�JKACR�=�cjEX>BrNK=�NKN�ACHc^BC>NKE�=�h^>S�S�JKH}�!ADRt>�E�=�BMF â Ý � ]%ÉuR�ACcek

��* � ����5���/�����.83Î9��U7�5�� ��9¢20.����H#J�B�>�E�=�cUILF�Sp=�J:d�H#J�RT>c�IL=�#E�JKA�>BDNnH#c�{4<�ADIX<TNKW�@(|K=LILE�N�Rt>�h�= =�JKJ�H#JKN�{0=LJ�=Qh�J�H#SUS+=Lh

d�J�H#R E�<�=4>�c�>BDF(NK=�N�k �VJKJ�H#J�J�>�E�=LNV{0=LJ�= P#=LJKFOBCH}{�{4ADE�<�E�J�WU= S�J�H#@UBC=�R�N4��RT=�>ceä Ü k � � �>c�h^I�H#JKJ�=�BC>�E�=Lh^NKACi#cUA%��I�>cjE�BDFt{4ADE�<�B�>�E�=�cUI�AC=LN����`_ � ÈU� ��k �VJ�JKH#J�NQJ�>�E�=�N4{�=�J�=`<�ACi<�=�J{4ADE�<-dw>BCNK=YS�J�H@�BC=LRTN���RT=�>ceä�]�k Ï�� ��>c�h-{�=�J�=�ILJ�ADE�ACI�>Bqd�HJuE�<�=Y>N�NKH!ILA�>�E�ADP#=tI�H#c!~d�W�N�ADH#c�=���=LILE�N8E�=�N:E�=�hà<U=�J�=�k�; <�=�JK=Ld�H#JK=��{�=�J�=LS+HJKE�>�c�>BDF(NK=�N8H#c�B�>�E�=�c�ILAC=�NQd�H#J?E�J�W�=>c�hydw>BCNK=�S�J�H@�BC=LRTN�NK=�S�>J�>�E�=LBDF�\>�c�hsHcs=LJ�J�HJ�N6H#càdw>BCNK=OS�J�H#@UBC=�R�N���E�<�=�>c�>BMF(N�=�NHdv=LJ�JKH#J�N6H#cyE�JKW�=OS�J�H#@UBC=�R�N�@p=�ACcUi^JK=�h�W�cUh�>cjE`{4AME�<àE�<U=TILH#J�JK=�N�SpH#c�hUACc�i^>c�>BMF(N�=�NHd\B�>�E�=�c�ILAC=�N���k

â k � k��\¦! ¢¡X£p¬X¤w¡�ª �l¥�© �U©�«%¡��V©�¥���¨�¡ $�ª�® ; <�=�R�=�>c�RT=Lh�A�>c�I�H#JKJ�=�I�EOJ�=LN�SpH#c�N�=YE�ACR�=�Nd�H#J4E�<�=6E�JKW�=`SUJ�H#@�BD=�R�N {0=LJ�=�>�c�>BDF(NK=�h�W�NKACc�iT>T]��wR�=�R�H#J:F�BCHj>�heä�ILH#cjE�JKH#Bl�§>J:E�ADI�W!~B�>�E�H#JKFuN�W�SUS�J�=LN�N�ADH#ce�(I�>cUH#c�ACI�>B�BC=�E�E�=�J�NL�%J�>c�hUH#RÛBC=�E�E�=�J�N�� ��Ü ��H#S+=LJ�>�E�ACH#c�än>hUh�ADE�ACH#c!}ª`R�WUBDE�ADS�BCADI�>�E�ACH#c�� � Ü ��S�J�H@�BC=LR h�A �TILW�BDEGFpä�=�>NKF !}ª6h�A���ILW�BDEX�b>c�>BMF(N�ACN�H�d�P�>JKAM~>c�IL=6�����������z��{4AME�<`J�=�Sp=�>�E�=�huRT=�>N�W�JK=�N�Hc`E�<U=vB�>N:E�EG{0H8dw>I�E�H#JKN�kn�z>�E�=�cUI�AC=LN\P�>JKAC=�hN�ADi#c�A%��I�>cjE�BMF�{4AME�<xRT=LRTH#J:F�BDHj>he��� �t� â � � �j��_ � Ï k Ï�â �"!$# kßÝ#Ý � �&%('*)�_Þ] ��â ] â Ý,+�k; <�=4RT=�>cORT=Lh�A�>�c�B�>�E�=�c�ILAC=�N�{�=�JK= �#� Ý��U� �#�#�#� � � Ý Ï ]��j>�c�h � Z] Ü R�N�=�I��#d�H#J�E�<U= I�H#c!~E�JKH#Bl�+>JKE�ACILW�B�>�E�H#JKFYN�W�S�SUJ�=�NKN�ADH#ce�eI�>c�H#c�ADI�>BzBC=�E�E�=�J��+>c�h�J�>c�hUH#R BC=LEKE�=LJbI�Hc�h�ADE�ACH#cUN��J�=LN�Sp=�ILE�ADP=�BDFk�ÐVB�>c�cU=�htILH#R�S�>J�ADN�H#cUNqJK=LP=�>BD=�htNKACi#cUA%��I�>cjE�hUAD�+=�J�=Lc�I�=LN�@p=LEG{�=�=LcYE�<�=J�>cUh�H#R BD=LE�E�=�J ILH#c�h�AME�ACHc^>�c�h^=�>IX<�HdnE�<�=6HE�<�=LJ4RT=LRTH#J:FYBDHj>h�I�Hc�h�ADE�ACH#c�>�c�h^cUHHE�<U=�JQI�H#R�S�>JKACN�Hc�{0>NbNKACi#cUA%��I�>cjE�k ; <�ADN?R�=�R�H#JKFYBCHj>h�P�>J�AC>@�BD=�ACcjE�=LJ�>I�E�=�h^{4ADE�<H#Sp=�J�>�E�ACHce���-�T� â � � �j�?_ Ï kÂÝ]U�.!�#ÛkÂÝ � ��%/'*)�_ Ü ÝZ#Z È#â +���N�<UH�{4ADc�iYBDH#c�i#=LJQBC>�E�=Lc�I�AD=�N{4ADE�<�>h�h�AME�ACHctS�JKH#@�BC=LRTN�ACcYE�<�=8I�Hc%E�J�H#B�>c�h�>J:E�ACILW�B�>�E�H#J:FON�W�S�SUJ�=�NKN�ADH#c�I�H#c�hUADE�ADH#c�N>c�hy{4ADE�<sR�WUBDE�ADS�BCADI�>�E�ACH#c�S�JKH#@�BC=LRTN6ADcyE�<�=OHE�<U=�J�EG{0H^I�H#cUh�ADE�ACH#c�NLk��§WUJKE�<U=�J�R�H#JK=�=�>N:F�S�J�H#@UBC=�R�N$� �� � È RTNK=�I}�v{�=�J�=6P#=LJ�A���=�h^RTH#JK=6g(WUACIXf%BDF�E�<�>c�h�A���I�WUBDEQS�J�H@�BC=LRTN� �}âÈ ZYRTNK=�I������ �t� � � � �j�b_ �}â ]�k ÉÉ!��!$#ÞkÂÝÝ#Ý � ��%/'*)�_ÞZjÉ � Ü +�k6mbN�;\>@�BD= � N�<�H}{4N��E�<�=0h�AD�+=�JK=�c�IL=0@p=LEG{�=�=�c�=�>�NKFu>c�h�h�A ��I�W�BMEnS�JKH#@�BD=�R�NzE�=�c�h�=Lh�E�H?P�>J:F6{4ADE�<uRT=LRTH#J:FBCHj>�he��E�<�=0hUAD�+=�J�=Lc�I�=�@+=�EG{0=L=�c�E�<U=0I�Hc%E�J�H#B(>cUhuE�<�=�J�>cUh�H#RÕBC=�E�E�=�JzI�H#c�hUADE�ADH#c�Nz@+=LACc�iE�<�=0i#J�=�>�E�=LNKEQ��RT=�>c�J�=LN�Sp=�I�E�ADP=4h�AD�+=�JK=�c�IL=�N�@p=LEG{�=�=LcT=�>NKF�>c�h�h�A ��I�W�BMEGFuS�JKH#@�BD=�R�N�ä� ] �U� Ü#Ü#Ü � Üâ ]U��>cUh â BC]TRTNK=�I��+d�H#JQE�<�=�ILH#cjE�JKH#Bl�+>JKE�ACILW�B�>�E�H#JKFYN�W�S�SUJ�=�NKN�ADH#ce�eI�>c�H#c!~ACI�>B�BC=LEKE�=LJ��p>c�h�J�>c�h�HR BC=LEKE�=LJ?ILH#c�h�AME�ACHc�N��§J�=LN�Sp=�I�E�ADP=�BMF����e>BME�<�HW�i#<�E�<�=`RT=LRTH#J:FBCHj>�h � h�A���I�WUBDEGF�ACcjE�=LJ�>I�E�ADH#c^{0>NbHc�BDF�RT>J�i#ADc�>BDBDFTN�ACic�A%��I�>cjE��0�-�T� â � � �#�?_ Ü kßZU�

Page 13: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � 2�

xe�����û����®��o�7�ü�ü��³,®¯���±���$¦ xc�������.�û����® y{���������� ³������������5����� �����Ã�±����� �����Ã�±�����

�� �����������������������! " Ø,ÑÃÖùË.Ì5Ç,â¥Ù�È�ÎÚÑ ï�ð$#&%Éç$ï�à�ï7õ ï�ð&'�#Éç$ï�àéí×õ (*),ðÉç$ï�à,+õ ï�%*%�ïùç$ï�à ðõ- ͧølÛ(Ý.Ù§Ð�Ë.Ì5Ç,â"Ù§È�ÎÚÑ ï�%$#&)Éç$ï�à.',õ ï9í�ë&'¨çüð�à ðõ ï,ï/'*'Éçüð�à�ï7õ ï�)�í0+Éçèí�à,)õ- Í21�È(Ì5È�Ï¥Û9È ï3#&%Éç4#�à,)õ ð$#ë¨ç4#�à ëõ ð�ï�+Éç4#�à.',õ %�ï9íôç5%�àéí×õ687 ������9��4��:&;<���������������������! " Ø,ÑÃÖùË.Ì5Ç,â¥Ù�È�ÎÚÑ ë*)*%Éç$ï�à=#�õ '�ð$#Âç$ï�à,+õ (*+*%Éç$ï�à,+õYð$#&%*(Éç$ï�à=#�õ- ͧølÛ(Ý.Ù§Ð�Ë.Ì5Ç,â"Ù§È�ÎÚÑ ï3#&+�ïùç$ï�à ëõ (*+&'�çüð�à,%õ ï�ð$#&+ôçüð�à,(õYð*%*+*%Éçèí�à ëõ- Í21�È(Ì5È�Ï¥Û9È ï�ë,ëÉç4#�à ëõ ð*%&'�ç4#�à ëõ ð*+,ðÉç$ï�àéí×õ %�ï9íôç5%�à ëõ

> �@?�A�B�CED6�^=�>c���=�h�AC>c�B�>�E�=�c�ILAC=LN4�wR�N�=LI}�n>cUhOÐ\=�JKI�=Lc%E�>i#= �VJ�JKH#J�N�wADc�Ðn>JK=�cjE�<�=LN�=LNX�4d�HJvE�<�=6;zJ�W�=`ÐVJ�H#@�BD=�R�N�ä �n�!S+=LJ�ADRT=Lc%E � k

!p_ kßÝ Ï � %('*)X_ÖZjÉ � Ü +lknÐ�BC>c�c�=Lh�I�H#R�S�>JKACNKH#c�N�NK<�H}{0=LhtN�ADi#c�A���I�>cjEnh�A���I�WUBDEGF�=���=LILE�Nd�H#J =�>�IX<�HdzE�<�=6R�=�R�H#JKFtBCHj>�h � H#S+=LJ�>�E�ACH#c�ILH#c�h�AME�ADH#c�N�k; <�= B�>�J�i#=LJ\S�JKH#@�BD=�R h�A���I�WUBDEGF`=L�+=�ILE�N�=�=Lc�{4ADE�<�ADc�I�JK=�>NKACc�ibRT=LRTH#J:F$BCHj>h`ACN\I�H#c!~

N�ADNKE�=LcjE${4AME�<�E�<�=�{0HJ�f%ACc�i�R�=�R�H#JKF^J�=LN�H#WUJ�I�=O<jF(S+H�E�<�=LN�ACNLk�; <�=�{�H#J�f%ADc�i�RT=LRTH#J:FJ�=LN�H#W�JKI�=�<jF(S+HE�<�=�NKACNO>ILI�H#WUc%E�N�d�H#JuE�<�ACNuE�J�=Lc�h�@jF�>NKN�W�R�ACc�i�E�<�>�Euh�A���I�WUBDE�S�JKH#@!~BC=LRTN�EX>f�=bBDH#c�i#=LJ�E�HuJK=LE�JKAC=�P#=QACctBDH#c�i�~lE�=LJ�RÛR�=�R�H#JKF�>c�hY>�J�=8>���=LILE�=LhtE�H`>`iJ�=�>�E�=�Jh�=�iJ�=�=4@jFO>8NK=�I�Hc�h�>J:F�EX>NKf��wm?N�<�ILJ�>�d²Eq=�Eq>BlkM� �}È#È#Ü ���#NKW�i#i#=LNKE�ACc�i�E�<�>�E�N�H#R�=vRT>�|KH#JI�H#R�SpH#c�=�cjE�H�d�RT=Lc%E�>B\>J�AME�<�R�=LE�ACI$ACNbNK=�c�NKADE�ADP#=`E�H�>cy>�E�E�=LcjE�ACHc�>BzH�P=�JKBCHj>h�N�ADE�W�>�~E�ADH#cekâ k � k � kGFe¸ºGµ�±�·�°lµX¾ ��Ã�½�Hr¸´Â¾}µ ��½Xà ��´Cµ�Àu¾�Å4; <�=bR�=�>�cTR�=�h�AC>c�I�H#JKJ�=�I�E0JK=�NKS+H#cUN�=?E�ACR�=�Nd�H#JvE�<U=6dw>�BCN�=�SUJ�H#@�BD=�R�N0{�=�J�=`>c�>�BDF(��=Lh^W�NKACc�i�>�]^�wR�=�R�H#JKFTBCH#>heäVI�Hc%E�J�H#B���>J:E�ADI�W!~B�>�E�H#JKFuN�W�SUS�J�=LN�N�ADH#ce�(I�>cUH#c�ACI�>B�BC=�E�E�=�J�NL�%J�>c�hUH#RÛBC=�E�E�=�J�N�� ��Ü ��H#S+=LJ�>�E�ACH#c�än>hUh�ADE�ACH#c!}ª^R�WUBDE�ADS�BCADI�>�E�ACH#c�� � Ü ��S�J�H#@UBC=�R h�A���I�WUBDEGFpä�=�>N:F !}ª^h�A ��I�W�BME�� � Ü ��>cUNK{�=�J�äc�H#c!~�I�H#c!d�W�N�ADH#c !}ªbILH#cUd�W�NKACH#c�� ���������-{4AME�<�JK=�Sp=�>�E�=�h^RT=�>N�W�JK=�N?H#c^E�<�=`BC>NKE4E�<�J�=L=dw>ILE�H#J�NLk mbN�I�>c @+=�N�=L=�cÓADc ;\>@�BD= Ü ��E�<U=�RT>�|KH#J�=��!Sp=�JKACR�=�cjEX>B4RT>c�ADS�W�B�>�E�ACHc�N{0=LJ�=`N�W�ILI�=�NKNKd�W�B�k ; <�=$RT=�>c^R�=�hUA�>c�B�>�E�=�cUI�AC=LN d�H#J E�<�=$I�H#cjE�J�H#B��§>JKE�ACI�WUB�>�E�H#JKFtN�W�S!~S�J�=LN�NKACH#ce�%I�>c�H#c�ADI�>BUBC=LEKE�=LJ��%>c�h�J�>�c�h�H#R BC=LEKE�=LJVI�H#c�hUADE�ADH#c�Nn{�=�JK= ��}âjÜ � �#� Z È � �#� ]jÝU�>c�h � É È ��RTNK=�I��qJK=�NKS+=LILE�AMP#=LBDF#��ADc�h�ACI�>�E�ADc�i�>�NKACi#cUA%��I�>cjE�R�=�R�H#JKFsBCHj>�h-I�H#cUh�ADE�ACH#c=L�+=�I�E��&�-�T� â � âjÜ � _ �Uk Ü�È � !$# kÂÝjÉ(� %('*)�_ Ï ÉÝ Ü Z È +lkn; <�=6H#c�BDFtN�ADi#c�A%��I�>cjE4S�BC>c�c�=LhI�H#R�S�>JKACNKH#c�NQACc�h�ADI�>�E�=�h�E�<�>�EbBC>�E�=Lc�I�AD=�NQACc�E�<�=`J�>c�hUH#R BC=�E�E�=LJ?ILH#c�h�AME�ADH#c�{�=�JK=uNKACi�~c�A%��I�>cjE�BMF�BCH#cUi#=�J�E�<�>cÓACc >cjF�HE�<U=�JtR�=�R�H#J:F�BCHj>�h ILH#c�h�AME�ACHcekÓ; <�=�hUAD�+=�J�=Lc�I�=@+=�EG{0=L=�cà=�>NKF�� �}Ü#Ü#Ü RTNK=�I}�4>c�h^h�A���ILW�BDEu� ��â Ý Ï RTNK=�I}� S�JKH#@�BC=LRTN {0>NbNKACi#cUA%��I�>cjE���-�T� � � � �#��_ âjÜ kßÝ � �$!$# kßÝ#Ý � � %/'*)X_ ��Ï Ý#Z] +�k-; <�=�i#BCH@�>BvZÝ�~GR�N�=LI^>�N�N�H(I�AC>�E�AMP#=I�H#c!d�W�N�ADH#c^=���=LILE4{0>N?NKACi#cUA%��I�>cjE���� �t� � � � �#� _ � �Uk �#ZU�,!$#ãkßÝ � � %('*)�_ �}È Ý Üâ +�k

Page 14: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

2,- ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

������������ �������� �����������! �"#�$ ��%�#���

&(')� ')� ')� &(')� ')� ')�

*,+-+/.10�.12436587�2:9);1<>=@?'�BAC 1��B�rs����U DFE�G �IH��FJ ����IK �IH�L�M ���5�IJ J��NKO ����5�� �[QPJa � F D � F � H F M � F � � F � H F �

R I 1�!�����%�� S�BT��UC��V$VC��#�W�X�%��Ars����U D�G>J �5��MFJ ���NHNK �IHNJ�G ���IM�H E�LFKO ����5�� �[QPJa M F � G F � H F � G F � G F J H F G

'Y��A4��A$�1�#���[Z-�� T S����rs����U ����H'� �#��M!� ��M'�IK �5�BE�M ���BJ�D \���]^JO ����5�� �[QPJa M F E G F H H F M G F � G F D H F L

_`��A[a��B�bZ)�B T S����rs����U �cGNMNL �IM�M'�d\��IHNJ �IL�H�G �cG!��e\����IMO ����5�� �[QPJa G F J D F E M F ��K E F � ��� F E M F LFK

fhg ;10�.1i-;!.1j�k$0�.1243l587B2m9);1<>=@?'�BAC 1��B�rs����U ����H!� �5��D>E DFJ�K �IM��D ��MNHNJ \��IMO ����5�� �[QPJa � F � � F M H F G � F � � F G H F M

R I 1�!�����%�� S�BT��UC��V$VC��#�W�X�%��Ars����U ����H5� �IM�MNL ���FE�K �IMFE�J �cG*��D J�MFKO ����5�� �[QPJa M F � M F E H F J G F � G F D H F L

'Y��A4��A$�1�#���[Z-�� T S����rs����U �NJ�G �#���FJ M�G6�IK �IH�GNL ���IL�G �����NKO ����5�� �[QPJa M F D G F � H F G G F H G F G H F G

_`��A[a��B�bZ)�B T S����rs����U ��L��5� ��E�M5� MNH ��E�M� �BE�G5� �IDO ����5�� �[QPJa G F M D F � M F GFK D F M ��� F M M F HFK

n�oBoWpSqWrWsut�v�suwWxByXzC{|m}�~B�B�#���%���#�I���I�Q�^�#���I�Q�#�B�^�����X�N|:}�~I�T�#�����B�!�^�#���B�!�#�B�^�����X�N|:��~B�I�#�I�%���#�I���B�Q�^�#�8�S�����S�X���� �^�#�I� ���T���c�/���#�I���I�Q�^�#���S�����S�X�

> �@?�A�B���D��^=�>�c��^=�h�AC>c-��>�E�=�c�ILAC=LN��wR�N�=LI}�$>c�h�Ðz=�J�IL=�cjEX>�i#=��VJ:~J�HJ�Nnd�H#J\E�<�= �§>BDN�= ÐVJKH#@�BC=LRTNv�lÚ0H#c!d�W�N�ADH#cO>c�hOËQH#c!~GILH#cUd�W�NKACH#cOÐVJKH#@!~BC=LRTN���ä �n�!S+=LJ�ADRT=Lc%E � k

Page 15: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � 2,:

�^H#JK=VACR�S+H#J:EX>cjE�BDF#�LE�<�=�EG{�H4I�J�AME�ADI�>B�ACcjE�=LJ�>I�E�ACHc�N�{�=�J�=�NKACi#c�A���I�>�c%E�k�; <�=�RT=LRTH#J:FBCHj>�h � h�A���ILW�BDEGF�ACcjE�=�J�>�ILE�ADH#c�{v>N?N�ADi#c�A%��I�>cjE��0� �t� â � � �j�Q_ â kÂZ#É!� !�#×kÂÝjÉ(��%('*)�_��Ï Ý#Z�]�ä-+�hUA���I�W�BMEGF�=L�+=�I�E�N�E�=Lc�h�=�h$E�H4@p=qNKRt>�BCBC=LJeACc�E�<�=�I�>c�Hc�ACI�>BjBC=�E�E�=LJq��� � Ý4RTNK=�I}�>c�h�J�>c�h�H#R BC=�E�E�=LJ�� È ÉuRTNK=�I���I�H#cUh�ADE�ACH#c�NqE�<�>�c�ACcYE�<U=8HE�<U=�J0EG{�HOI�H#c�hUADE�ADH#c�N8� �}â �>c�h �#� �ORTNK=�I6d�H#JQE�<�=$I�H#cjE�JKH#Bz>c�h�>JKE�ACI�WUB�>�E�H#JKFtN�W�S�SUJ�=�NKN�ADH#c�I�Hc�h�ADE�ACH#cUN���J�=LN�Sp=�I�~E�AMP#=�BMFU��k$��W�JKE�<�=�JKRTH#JK=�pE�<�=�R�=�R�H#J:F^BDHj>h � >c�NK{�=�J�ADcjE�=�J�>ILE�ACH#c^{v>N�NKACi#cUA%��I�>cjE���-�T� â � � �#�0_ â k ��Ü � !p_ÛkÂÝjÉ(�"%('*)�_ �}È Ý Ü �,+lk�Ð�BC>c�c�=LhYI�HRTS�>�J�ACNKH#c�NqJ�=�P#=�>�BC=�h�NKACi#cUADd�~ACI�>cjE$>N�NKH!ILA�>�E�ADP#=�ILH#cUd�W�NKACH#cy=���=LILE�N6ADcyE�<�=OI�H#cjE�J�H#B�ILH#c�h�AME�ADH#ce� � �t� � � � �j��_�]�kÇ]#]��!$# kÂÝ#É +l�%E�<U=8>J:E�ACILW�B�>�E�H#J:F�N�WUS�S�J�=LN�NKACH#c�ILH#c�h�AME�ACHce� �-�T� � � � �j�q_ È k Ï#Ü � !$#ÕkßÝ � +��U>cUhE�<�=�I�>c�H#cUACI�>�B\BD=LE�E�=�J8ILH#c�h�AME�ADH#ce�0�-�T� � � � �j�8_ � ÝUk Ï É!� !$#�kÂÝ � +l��@�WUE�c�H�E�W�c�h�=LJ8E�<�=J�>cUh�H#R BC=LEKE�=LJ?ILH#c�h�AME�ACHc���� # � ��k8Ë?HtHE�<�=LJbNKACR�S�BC=$H#JQACcjE�=LJ�>I�E�ACHc�=L�+=�I�E�N8{�=�JK=N�ADi#c�A%��I�>cjE�kâ k � k Ü k���½�½�Ã�½X¾���Ã�½ Hr¸´Â¾}µ ��½Xà ��´Cµ�Àu¾�Å4mbNQI�>c^@+=$N�=L=�c�ADc^;\>@�BD= Ü �§=�J�JKH#J�N4{�=�J�=`BCH}{6�>�P#=�J�>i#ADc�iT]Uk Ï�� >I�JKH#N�NQN�W�@%|K=�ILE�N��+>c�h^>I�ILH#J�hUACc�i#BMF#��hUAD�+=�J�=Lc�I�=LNbADc^>�I�I�WUJ�>I�F�R�W�NKE@+=�ACcjE�=LJ�S�JK=LE�=Lh {4ADE�<�I�>WUE�ACH#c�k �VJ�J�HJ�Nt{�=�JK=y>c�>BMF!�L=�h BDACf=^B�>�E�=�c�ILAC=LNtW�NKACc�i�>s]�wR�=�R�H#JKF�BCHj>�h§� ��Ü �wH#Sp=�J�>�E�ADH#c§� ��Ü �wh�A �TILW�BDEGFU� �ÞÜ ��>cUNK{�=�JX��R�AM�!=�h!~�h�=�NKACi#c������� �Vk ��JKJ�H#J�J�>�E�=�N�P�>J�AD=�hØ{4ADE�<ØR�=�R�H#JKF BDHj>he���-�T� â � � �j��_ � �Uk Ï É!� !$# kßÝ � �%('*)X_ ] �!kÂZ È +lkyÐVB�>�c�c�=�h�ILH#R�S�>J�ADN�H#cUNuJ�=�P#=�>BC=Lh�N�ACic�A%��I�>cjE�h�AM��=LJ�=Lc�I�=LN�@+=�EG{0=L=�cE�<�=�J�>�c�h�H#R BD=LEKE�=�JOILH#c�h�AME�ACHc >�c�h =�>IX<�H�dbE�<U=�E�<�J�=L=^H�E�<�=LJ�R�=�R�H#J:F-BCH#>h�I�H#c!~h�ADE�ACH#cUN��r>cUhàc�H�HE�<U=�J�I�HRTS�>�J�ACNKH#c�Nb{�=�JK=ON�ACic�A%��I�>cjE�k ��>NKF�S�J�H#@UBC=�R�NbSUJ�H(h�W�I�=Lhd�=L{�=�JQ=�JKJ�H#JKNQE�<�>c�h�A���ILW�BDE4S�JKH#@�BD=�R�N���� �t� � � � �j�4_ ZUk �!� !$#ãkÂÝ � � %('*)X_ ]�k ÜÜ +lk�m?BM~E�<�HW�i#<�cUHTHE�<�=�JQRT>ACc�H#J4ACcjE�=�J�>�ILE�ADH#c�=L�+=�ILE�N?{�=�JK=uN�ADi#c�A���I�>cjE���{0=`W�N�=Lh�S�BC>c�c�=LhI�H#R�S�>JKACNKH#c�N8E�H�E�=LNKE6E�<U=T>�N�N�H(I�AC>�E�AMP#=�ILH#cUd�W�NKACH#cx=L�+=�I�E�N$ACcy=�>IX<sRT=LRTHJKF^BCHj>h �H#Sp=�J�>�E�ACHc � h�A ��I�W�BMEGF�ILH#c�h�AME�ACHc�� %('*)�_ Ü k Ï Zj��k�m?N8I�>cy@p=�N�=L=�càd�J�HR ;\>@�BD= Ü �N�ADi#c�A%��I�>cjEn>N�NKH!ILA�>�E�ADP#=�ILH#cUd�W�NKACH#c`=L�+=�ILE�Nn{�=�J�=�H#@�NK=�JKP=�h�H#cUBDF6ACc6E�<U=�J�>c�h�H#R BD=LE�E�=�JI�H#cUh�ADE�ACH#c�Nv{4AME�<�@pHE�<�>h�hUADE�ADH#c�>c�h�R�W�BME�ADS�BCADI�>�E�ACH#c�S�J�H@�BC=LRTNLk

GcON�W�R�Rt>�JKF#�J�=�NKW�BDE�NVHd �n�USp=�JKACR�=�cjE � >JK= I�H#c�NKACN:E�=�cjEV{4AME�<�E�<�= <jF(SpHE�<�=LN�ADN�E�<�>�EN�ADRTS�BD=`R�=�cjE�>B�>JKADE�<�RT=�E�ADI$JK=�g%W�ADJ�=�N8{�H#JKf(ADc�iYR�=�R�H#JKF�JK=�N�HW�J�IL=�N�k6; <�=�hUAD�+=�J�=Lc�I�=@+=�EG{0=L=�cÓ=�>NKF�>�c�h <�>J�h�S�JKH#@�BC=LRTN�BC>�E�=Lc�ILF�{v>N�i#JK=�>�E�=�NKE�ADc�E�<�=�J�>cUh�H#R BD=LE�E�=�JI�H#cUh�ADE�ACH#ceÊ(E�<�=6h�AM��=LJ�=Lc�I�=6@p=LEG{�=�=�c^I�H#c!d�W�N�ADH#c�>�c�h�c�H#c!~�I�H#cUd�WUN�ACHc�SUJ�H#@�BD=�R�Nv=�JKJ�H#JJ�>�E�=�N4ACcUI�J�=�>N�=Lh^ADc�E�<�=6J�>�c�h�H#R BD=LEKE�=�J ILH#c�h�AME�ADH#cek�; <�ADN N�W�ii#=�N:E�N4E�<�>�E E�<�=6I�=Lc%E�J�>B=��!=�ILWUE�AMP#=8NKW�@!~�NKF(NKE�=�RÞACNVE�<�=?I�JKADE�ADI�>BUI�H#R�S+Hc�=�cjE�Hd�{�H#J�f%ADc�iuR�=�R�H#JKF�ACcjP#H#BMP#=LhtACcN�ADRTS�BD=8R�=�cjEX>B�>�J�ADE�<�R�=LE�ADIk

�?H}{�=LP#=LJ��v@p=Ld�HJ�=�{0=�>ILI�=LSUEOE�<�ADN�I�H#c�ILBCW�NKACH#c��q{�=�R�W�NKET>hUh�J�=LN�N�H#c�=�J�=LBC=�P>�c%EACNKN�W�=6>@pH#WUE0J�=LN�=�>�J�IX<�H#cYE�<�=8>N�NKH!ILA�>�E�ADP#=?I�H#c!d�W�N�ADH#c�=L�+=�I�E��U{4<�ADIX<�ACN�{4<U=LE�<U=�J4S+=LJ:~I�=LSUE�W�>�Bndw>ILE�H#J�N8>J�=�JK=�N�SpH#c�NKAC@�BD=ud�H#JQE�<�ADN8=L�+=�I�E�k$; <�>�E�ADN��eNKW�@(|K=�I�E�N6RT>}F^Sp=�JKd�HJ�RS+H(H#JKBDF�{4ADE�<�ILH#cUd�W�NKACH#cÓSUJ�H#@�BD=�R�NO@+=LI�>W�NK=y>�d²E�=LJTNK=�=LACc�i�>�c >c�N:{0=LJtE�<�>�ET{�H#W�BDh<�>�P#=O@p=�=�cxI�HJ�J�=LILE6W�cUh�=�J6>Yh�AM��=LJ�=Lc%E6HS+=LJ�>�E�ACH#ce�+E�<�=�F�IX<�=LIXf�E�H�N�=L=OADdVE�<U=LFà<�>�P=KR�ACN�Sp=�JKI�=LADP#=Lh ��E�<U=8N�ADi#cek�Ñ!=�P#=LJ�>BeSUAC=�IL=�N Hd�h�>�EX>�<�>�P=�J�W�BD=�hYH#W!EvE�<�ADN0Sp=�JKI�=�S!E�W�>B>JKE�=Ldw>I�E�SpH#N�NKAC@�ADBCAMEGF��w=�kßiUkD�ná6HN�<�R�ACh�=LJuÌ m?N�<�ILJ�>�d²E�� �}È#È!� ÊV�r=�RT>ACJK=O=LE�>�BlkM� �}ÈÈU� Ê

Page 16: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

2,2 ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

�}È#È ]UÊ���=LRt>�ACJ�=uÌ Ñ(AC=�iBC=�JL� �}ÈÈ É!Ê ��@�JKH!hUH��ÌÞ�rH#ij>ce� �}È Z��j� d�H#JbE�<�=�I�H#cjE�J�H#B\I�H#c!~h�ADE�ACH#c�k �QH}{0=�P#=�JL�?ADc�H#WUJth�W�>�BM~�E�>N�f�ILH#c�h�AME�ADH#c�N���E�<�=LJ�=�JK=�RT>ACcUN�E�<�=�SpH#N�NKAC@�ADBCAMEGFE�<�>�E�E�<�=ON�=LI�H#cUh�>JKFàE�>N�f�Rt>�F�E�J�ADi#i#=�J�hUAD�+=�J�=LcjE6NKE�J�>�E�=Li#AC=LN$>c�hyBC=�>hyN�W�@(|K=LILE�N`E�Hh�H#W�@UBC=�~�IX<�=�IXf�E�<�>�EVE�<�=LFO<�>�P=?=Lc�I�H(h�=�hOE�<U=QHS+=LJ�>�E�ACH#c�NKACi#cOI�HJ�J�=LILE�BDF#kn; <�ACNVN:E�J�>�E�=�~i#ACI?IX<�>c�i=8ACcTH�P=�JKBCHj>hUACc�i`I�H#c�hUADE�ADH#c�N�{0HW�BChYJK=�NKW�BDE0ACc�>hUh�ACc�i`N�S�WUJ�ACHW�N�E�ACR�=b>cUh=�JKJ�H#J8J�>�E�=LN8H#càILH#cUd�W�NKACH#càS�JKH#@�BD=�R�N?E�<�>�E8{�H#W�BChà<�>}P=�c�HE�<�ACc�iTE�H�h�HY{4AME�<à>YJK=�>B{0HJ�f%ACc�i^RT=LRTHJKFàBDHj>hy=L�+=�I�E�H#cxE�<�=�J�=�E�J�AD=LP�>B ~¢>c�h(~GI�HRTS�>�J�=�S�JKH!IL=�NKN�=�NuACcjP#H#BMP#=LhACc�NKACR�S�BC=t>J�AME�<�R�=LE�ACIkà; <U=�J�=�d�H#J�=��qE�HàI�H#cjE�J�H#Bqd�H#JuE�<U=�S+H#NKN�AD@�ACBDADEGFàE�<�>�E�E�<�=tI�H#c!~I�BDW�N�ADH#c�N Hd �n�!S+=LJ�ACR�=�cjE � {4AME�<�J�=Lij>JKh�E�H�{0HJ�f%ACc�iOR�=�R�H#JKF�BDHj>h�=L�+=�I�E {0=LJ�=6c�HE>c >J:E�AMdw>ILE�Hd6H#WUJ�{4AME�<�ADc!~GNKW�@(|K=�I�EYh�=LN�ADi#ce�v{�=�W�N�=LhÓE�<�=^H#Sp=�J�>�E�ACHc�dw>I�E�H#Jt>NT>@+=�EG{0=L=�c!~�N�W�@%|K=�ILEbdw>ILE�H#J ACc �n�!S+=LJ�ACR�=�cjE Ü k

� *��������1§9���z.0/��]�k � k��y¡� w­+¥ �§®]�k � k � k$¯§¿�����µX·�º�¾�ÅQ��H#JKEGF^ACcjE�JKH!hUW�ILE�H#JKF^S�NKF(IX<�HBCH#iF�NKE�W�h�=�cjE�Nt� �}È RT>BC=LN8>cUh Ü!� d�=�~Rt>�BC=�N��t>�EYE�<�=��z£U¤ !�¡�©�ªK¤� �¡ �U¡ Q¥(«© �U¥��j£+¡ �¦ �8¤ ��¥�£e�4JK=�I�=LADP=�ho>-I�B�>�N�NYILJ�=�hUADE�d�H#JS�>J:E�ACILACS�>�E�ACcUiuACc�E�<�=�=��!Sp=�J�ADRT=LcjE�kV; <�=6R�=�>c�>i=�Hd\E�<�=�N�WU@(|K=�I�E�N4{v>N Ü �!kß]�F=�>JKN�wJ�>c�i#= �}È k â��UÜÏ k â F=�>JKNX��k]�k � k Ü k$¯§ºw°²À�¿!´Á°wÅ4; <�=$NKE�ADR�W�BDA+{�=�J�=$AChU=�cjE�ADI�>B�E�H�E�<�H#NK=6W�N�=Lh�ACc �n�!S+=LJ�ADRT=Lc%E � k]�k � k â k���½�Ã}·Xµ )¿!½�µ�Å4; <�=tS�JKH!IL=�h�WUJ�=O{v>N`ACh�=LcjE�ACI�>B�E�H�E�<�>�EuWUN�=�h�ACc ���!Sp=�JKACR�=�cjE �{4ADE�<�Hc�=4=��!I�=LSUE�ADH#ceä�; <�=4NKW�@(|K=�I�E�Nq{0=LJ�=QN�<�H}{4ct=LADE�<�=�J�>hUh�ADE�ACH#c�H#JVRuW�BDE�ACS�BDACI�>�E�ACHcS�J�H@�BC=LRTNL��>cUh^{�=�J�=uJ�>c�hUH#RTBMF�>NKN�ACic�=�h�E�HtH#cU=uHd�E�<�=uHS+=LJ�>�E�ACH#c � BDHj>h�I�H#cUh�AM~E�ADH#c�N�kV; <U=8NKE�ACR�W�BDA�{0=LJ�=�S�JK=�N�=LcjE�=�h�ACcTEG{0H�@�BDH!IXf%NvH�d ��Ü �uS�JKH#@�BD=�R�N�=�>IX<s� � â E�J�W�=>c�h � â dw>BDN�=QS�J�H@�BC=LRTN���kn; <U=8N�W�@%|K=�ILE�N0{�=�J�=?S+=LJ�R�ADEKE�=�ht> ��P=bR�ACc%WUE�=QJK=�N:EvSp=�J�ADH!h@+=�EG{0=L=�c =�>IX<�@�BCH(IXf§k ��>IX<�=��!Sp=�J�ADRT=LcjEX>BvNK=�NKN�ACHc BC>NKE�=�h�>S�S�JKH��UADRt>�E�=�BMF Ü Ý �!â ÝRTADcek]�k Ü k���¡�ª�«¨l �ª�¦�£ � �8¤Cª�¬�«ªKª�¤�¥�£r® ��H#J�@pHE�< BC>�E�=Lc�I�AD=�N�>c�hØ=�JKJ�H#J�J�>�E�=LN��?h�>�EX>-{�=�JK=>c�>BMF(��=�h->N`ADc �n�!S+=LJ�ADRT=Lc%E � �zE�<�>�E`ACN6d�H#J6E�JKW�=t>�c�h�dw>BDN�=OS�J�H@�BC=LRTN$N�=LS�>J�>�E�=�BMF#k��>�E�=Lc�ILF�E�JKA�>BDNVH#ct{4<�ADIX<YN�W�@%|K=�ILE�NvRT>h�=Q=�J�JKH#J�Nq{0=LJ�=8hUJ�H#S�Sp=�hTd�J�H#RÛE�<�=8>c�>BDF(N�=LN�k�VJ�J�HJ8J�>�E�=�Nb{�=�JK=�BCH}{Õ{4ADE�<�E�JKW�=�S�JKH#@�BC=LRTNu�wR�=�>�ceä � k É � �Q>c�hàI�HJ�J�=LB�>�E�=�h�NKACi#cUADd�~ACI�>cjE�BDF�{4AME�<�BC>�E�=Lc�I�AD=�N�����_ � È#â ��k8mbN8ADc �n�!S+=LJ�ACR�=�cjE � �e=�JKJ�H#J?J�>�E�=�Nb{�=�JK=�<�ACi<�=�J{4ADE�<�dw>�BCN�=�SUJ�H#@�BD=�R�N$�wR�=�>c�äV]�k Ï � ��k]�k Ü k � kGFe¸ºGµ�±�·�°lµX¾ ��Ã�½��U½�¿§µ �0½�à ��´Cµ�Àu¾�Å ; <�=�R�=�>cYR�=�hUA�>cYILH#J�JK=�I�E J�=LN�SpH#c�N�=8E�ACR�=�Nd�H#J6E�<�=�E�J�WU=TS�JKH#@�BD=�R�N${�=�JK=Y>c�>�BDF(��=Lh->N`ACc ���!Sp=�JKACR�=�cjE � W�N�ADc�i�>�]���RT=LRTH#J:FBCHj>�heä�I�H#cjE�JKH#Bl��>JKE�ACI�WUB�>�E�H#JKFtN�W�S�SUJ�=�NKN�ADH#ce�§I�>cUH#c�ACI�>BrBC=�E�E�=�J�NL�§J�>c�hUH#R BC=�E�E�=�J�N�� �ÖÜ�wH#Sp=�J�>�E�ADH#ceä4>hUh�ADE�ACH#c !}ª8R�W�BME�ACSUBCACI�>�E�ADH#c§� �Øâ ��S�J�H#@UBC=�R h�A ��I�W�BMEGF+ä4=�>NKF !}ª8h�A���~I�W�BME��v>c�>BDF(N�ADN HdnP�>JKA�>cUI�=������������z�0{4ADE�<�J�=�Sp=�>�E�=�h^RT=�>N�WUJ�=�N4H#c�E�<U=$BC>NKE dw>�ILE�HJ�k

Page 17: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � 2,+

xe�����û����®��o�7�ü�ü��³,®¯���±���$¦ xc�������.�û����® y{���������� ³������������5����� �����Ã�±����� �����Ã�±�����

�� �����������������������! " Ø,ÑÃÖùË.Ì5Ç,â¥Ù�È�ÎÚÑ ï3#&+$#ôç4#�à,(õ ï,ï�(*%Âç$ï�à,%õ '�ë*+Éç4#�à,(õ ï,ï9í0+Éç$ï�à.',õ- ͧølÛ(Ý.Ù§Ð�Ë.Ì5Ç,â"Ù§È�ÎÚÑ ï,ï�ë�ïùç$ï�à,%õ ï�%&'�#Éç$ï�à,%õ (,ë*+Éç$ï�à,(õ ï�+*%*%Éçüð�à.',õ- Í21�È(Ì5È�Ï¥Û9È ï�%�ïùç4#�à ðõ ï/'*'�ç4#�à=#�õ ð$#*#ôç$ï�à=#�õ %,ë,ëÂç$ï�à=#�õ687 ������9��4��:&;<���������������������! " Ø,ÑÃÖùË.Ì5Ç,â¥Ù�È�ÎÚÑ '�ð�íÿç$ï�à=#�õ )*%,ë¨ç$ï�à=#�õ '$(&'Âç$ï�à ðõ ï/'�ð*)Éç$ï�à,)õ- ͧølÛ(Ý.Ù§Ð�Ë.Ì5Ç,â"Ù§È�ÎÚÑ ë*)*+Éç$ï�à ðõ ë�í '�ç$ï�à,)õ (*)*%Éç$ï�à,)õ ï�(�í&#ôçüð�à ëõ- Í21�È(Ì5È�Ï¥Û9È ï9í.ïùç4#�à ðõ ð$#&(¨ç4#�à,)õ ï�ë*)Éç4#�à,)õ ð�ï9íôç$ï�à ðõ

> �@?�A�B�� D6�^=�>c���=�h�AC>c�B�>�E�=�c�ILAC=LN4�wR�N�=LI}�n>cUhOÐ\=�JKI�=Lc%E�>i#= �VJ�JKH#J�N�wADc�Ðn>JK=�cjE�<�=LN�=LNX�4d�HJvE�<�=6;zJ�W�=`ÐVJ�H#@�BD=�R�N�ä �n�!S+=LJ�ADRT=Lc%E Ü k

��>�E�=Lc�I�AD=�NOP>�J�AC=Lh�NKACi#c�A���I�>�c%E�BDFs{4ADE�< RT=LRTHJKF�BDHj>he� �-�T� â � âjÜ �O_ É!k ÏÈ ��!$# kßÝ � �%('*)X_ â É Ï Ý#Ý Ï +�k�; <�=�R�=�>c�R�=�hUA�>c�BC>�E�=Lc�I�AD=�Nb{�=�JK= È É#É!� � Ý ��Ü ��Z#Z#ZU� � ÉZ��tR�N�=LI�d�H#J�E�<�=�I�Hc%E�J�H#B��z>JKE�ACI�WUB�>�E�H#JKF^N�W�SUS�J�=LN�N�ADH#ce�\I�>c�Hc�ACI�>BVBC=�E�E�=LJ��z>c�hxJ�>�c�h�H#R BD=LE�E�=�JI�H#cUh�ADE�ACH#c�NL��JK=�N�Sp=�I�E�AMP#=�BMF#k6ÐVB�>�c�c�=�hàILH#R�S�>J�ADN�H#cUNbJ�=�P#=�>BC=LhàN�ACic�A%��I�>cjE8h�AM��=LJ�=Lc�I�=LN@+=�EG{0=L=�c�E�<�=6J�>cUh�H#R BD=LE�E�=�J ILH#c�h�AME�ACHc�>c�h�=�>IX<^HdzE�<�=6HE�<�=�J R�=�R�H#JKFtBCHj>�h�I�H#c!~h�ADE�ACH#cUN�Ê�c�HàHE�<�=�J�ILH#R�S�>J�ADN�H#cUN`{�=�J�=�NKACi#c�A���I�>�c%E�kà��W�JKE�<�=�JKRTHJ�=�V=�>NKF�S�J�H@�BC=LRTN� � ÝÝ Ï RTNK=�I}�`{�=�JK=�P=�JKA%��=Lh R�H#J�=�g%W�ADIXf%BDF-E�<�>c�h�A���ILW�BDEOS�JKH#@�BD=�R�N�� ��Ü(�}â RTNK=�I}��-�T� � � âjÜ �v_ Z#ÝUkßZ#ÝU�,!$# kßÝ#Ý#Ý � � %('*)�_ � ÝjÉ#É Ï +�k�m?NQADc��n�USp=�JKACR�=�cjE � �(E�<�=�S�JKH#@�BD=�Rh�A���ILW�BDEGF�=���=LILE�N�E�=Lc�h�=LhTE�H$h�AM��=LJ�{4AME�<�RT=LRTHJKF�BDHj>he�#E�<�=Qh�AD�+=�JK=�c�IL=Q@p=LEG{�=�=LcYE�<�=I�H#cjE�J�H#Bp>c�h�E�<�=?J�>cUh�H#R×BC=�E�E�=�J�I�H#cUh�ADE�ACH#c�N�@p=�ADc�i$E�<�=Qi#J�=�>�E�=LNKE6��RT=�>c�h�AD�+=�JK=�c�IL=�N�ä�}â �U� ��È#â � �}È ]U�§>c�h â Ý � R�N�=LI��d�H#J E�<U=`ILH#cjE�J�HBl�§>J:E�ACILW�B�>�E�H#J:FtNKW�S�S�JK=�N�NKACH#c��+I�>c�H#c!~ACI�>B�BC=LEKE�=LJ��p>c�h�J�>c�h�HR BC=LEKE�=LJ?ILH#c�h�AME�ACHc�N��§J�=LN�Sp=�I�E�ADP=�BMF����e>BME�<�HW�i#<�E�<�=`RT=LRTH#J:FBCHj>�h � h�A���I�WUBDEGF�ADcjE�=�J�>ILE�ACH#c�{0>N$H#c�BMF�RT>J�iACc�>BDBDF�NKACi#c�A���I�>�c%E � �T� â � âjÜ �8_ Ü kÇ]��S§_ kßÝ#ZU��%('*)�_ � Ý#É#É Ï +�k�ÐVB�>cUc�=�hyI�HRTS�>�J�ACNKH#c�N�NK<�H}{0=Lh-N�ADi#c�A%��I�>cjE�h�A ��I�W�BMEGFà=Ld�~d�=�I�E�NOd�H#JO=�>IX< HdbE�<�=�RT=LRTH#J:F�BCH#>h�I�H#c�hUADE�ADH#c�NLk�; <UACNO=L�+=�I�ET{0>NtH@�N�=LJKP#=Lh�d�H#J@+H�E�<Ó>�h�h�ADE�ACH#c�>cUh�R�W�BME�ADS�BCADI�>�E�ACH#csS�J�H#@UBC=�R�N�k�Ë?HsHE�<�=LJTNKACR�S�BC=�HJ�ADcjE�=�J�>ILE�ACH#c=L�+=�I�EbS�JKH}P#=�h�E�HO@p=$NKACi#cUA%��I�>cjE�k

]�k Ü k Ü kGFe¸ºGµ�±�·�°lµX¾ ��Ã�½�Hr¸´Â¾}µ ��½Xà ��´Cµ�Àu¾�Å4; <�=bR�=�>�cTR�=�h�AC>c�I�H#JKJ�=�I�E0JK=�NKS+H#cUN�=?E�ACR�=�Nd�H#J\E�<�=vdw>BDN�=0SUJ�H#@�BD=�R�N\{�=�JK=4>c�>BMF!�L=�h�WUN�ACcUi6>b]��wR�=�R�H#JKF6BDHj>heä�ILH#cjE�J�HBl�j>J:E�ADI�W�BC>�~E�H#J:F�N�W�SUS�J�=LN�N�ADH#ce�pI�>cUH#c�ACI�>B�BC=�E�E�=LJ�NL�pJ�>c�h�HR BC=�E�E�=LJ�N�� �ØÜ ��H#Sp=�J�>�E�ACHceäq>h�h�AME�ACHce�R�W�BME�ACSUBCACI�>�E�ADH#c§� �Õâ ��S�J�H@�BC=LR h�A �TILW�BDEGFpä$=�>N:F !}ª`h�A ��I�W�BME�� � Ü ��>c�N:{0=LJ�ä`c�H#c!~I�H#c!d�W�N�ADH#c !}ªKI�H#cUd�WUN�ACHc§������������{4AME�<�J�=LS+=�>�E�=LhtR�=�>NKW�J�=LN�H#cOE�<U=?BC>NKEVEG{�H`dw>I�E�H#JKN�k; <�=$RT=�>c�RT=Lh�A�>c�BC>�E�=Lc�I�AD=�NQ>JK=�S�J�=LN�=�cjE�=�h�ADc�;\>@�BD=�]�>c�h�N�<�H}{�=�hà>�N�ADi#c�A���I�>cjE

Page 18: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

+,= ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

RT=LRTHJKF�BCH#>h�=���=LILE � �T� â � âjÜ �?_ â k ÉÉ!� !�#ÞkßÝjÉ!�*%('*)�_�É#ÉZ#Z�� Ü +lk4; <�=uRT=�>c�R�=�~h�A�>�c$BC>�E�=Lc�I�AD=�Ne{�=�JK= È �ZU� �#� Ý]�� �#�}Ü ÝU��>c�h ��ÏâÈ R�N�=LI��d�H#JeE�<U=qILH#cjE�JKH#Bl��>J:E�ACILW�B�>�E�H#J:FN�W�SUS�J�=LN�N�ADH#ce�%I�>�c�H#c�ADI�>B(BC=�E�E�=LJ��j>�c�h�J�>cUh�H#R BC=LEKE�=LJnI�Hc�h�ADE�ACH#cUN��JK=�NKS+=LILE�AMP#=LBDF#kVm?N�ACc�n�USp=�JKACR�=�cjE � �§E�<�=uHc�BDF�NKACi#c�A���I�>�c%EQS�BC>c�c�=Lh�ILH#RTS�>J�ADN�H#c�NQACcUh�ACI�>�E�=Lh�E�<�>�E?B�>�E�=�c!~I�AD=�NvADctE�<�=�J�>c�h�HR BD=LE�E�=�J�I�H#c�hUADE�ADH#ct{�=�JK=�N�ACic�A%��I�>cjE�BMFTBDH#c�i#=LJ�E�<�>cYADc�>cjFtHE�<�=�JRT=LRTHJKFyBCH#>h�ILH#c�h�AME�ACHcek^; <U=Yh�AD�+=�JK=�c�IL=Y@p=LEG{�=�=�c�=�>NKFÓ� �#�}Ïâ R�N�=LI}�u>cUh-h�A���~I�W�BMEO� ��ÜÈ#â R�N�=LI}�?SUJ�H#@�BD=�R�N?{0>N8NKACi#c�A���I�>�c%E�� � �t� � � â#Ü �b_ � �UkÇ]�� !$#�kÂÝ#Ý � �$%('*)�_��Ï!� Ý â +lk�; <U=Ti#BDH#@�>B�Z���~GR�N�=LIO>N�NKH!ILA�>�E�ADP=�I�H#cUd�WUN�ACHcs=���=LILE${v>N$N�ADi#c�A���I�>cjE � �t� � �� �j� _ �}Ü kÂÝ#É!�,!$#ãkÂÝ � � %('*)X_ Ü!�#�}È É +lk; <�=�RT=LRTH#J:F�BDHj>h � h�A���I�WUBDEGFàADc%E�=�J�>ILE�ACH#cà{0>N`RT>JKi#ACc�>�BCBDF�NKACi#c�A���I�>�c%E � �t� â �

âjÜ �V_ Ü kß] Ï �#S§_ kÂÝ#Z!� %('*)X_ ��Ï!� Ý â +l�#NK<�H}{4ACc�i6NKACi#c�A���I�>�c%E�BDF`B�>JKi#=�Jnh�A���I�WUBDEGF�=���=LILE�NACc-E�<�=�I�>cUH#c�ACI�>BvBD=LE�E�=�J�� �#�}È R�N�=LI}��>c�h�J�>c�h�H#R BC=�E�E�=LJ�� ÜÜ ]àRTNK=�I��uI�H#c�hUADE�ADH#c�NE�<�>�cxADc�E�<�=�ILH#cjE�JKH#BQ� È �YR�N�=LI}�bH#J8E�<�=O>J:E�ACILW�B�>�E�H#J:F^NKW�S�S�JK=�NKN�ACHcÓ��]#]�RTNK=�I��bI�H#c!~h�ADE�ACH#cUN�k6�nADc�>BCBMF#��E�<U=�RT=LRTH#J:F�BCHj>h � >c�N:{0=LJ�ACcjE�=LJ�>I�E�ADH#c�{0>N�N�ADi#c�A%��I�>cjE�� �t� â �âjÜ �8_ â kÂÉÝU��!$# kÂÝ#É!��%('*)�_ Ü!��}È É +�kuÐVBC>c�c�=LhxILH#R�S�>J�ADN�H#cUN8J�=�P#=�>�BC=�hxN�ADi#c�A���I�>cjE>N�NKH!ILA�>�E�ADP=QILH#cUd�W�NKACH#cT=L�+=�I�E�N0ADc�E�<�=QI�H#cjE�J�H#B§I�Hc�h�ADE�ACH#c � �t� � � âjÜ ��_ÎÉ!k ÈjÜ � !$#ÔkÂÝjÉ +l�ACc�E�<�=�>�JKE�ADI�W�BC>�E�HJKF�NKW�S�S�JK=�N�NKACH#c�ILH#c�h�AME�ADH#c � �t� � � âjÜ �q_ É(kÂÝ � � !$#ÕkßÝ � +���>�c�hYACc�E�<�=I�>cUH#c�ACI�>BnBD=LEKE�=�J?I�H#cUh�ADE�ACH#c � �T� � � âjÜ �8_ � ÝUk È ÝU� !$# kßÝ � +���@UWUE6c�HEbACc�E�<U=�J�>cUh�H#RBC=�E�E�=LJ�ILH#c�h�AME�ADH#c�� � # � ��k�; <�=?h�ACNKJ�W�SUE�ACH#cTHdeE�<�=?ILH#cUd�W�NKACH#ct=L�+=�ILE0ACcOE�<�=?J�>cUh�H#RBC=�E�E�=LJTILH#c�h�AME�ADH#c�>�c�h�c�H�EtADcÓ>cjF�HdbE�<�=�H�E�<�=LJTR�=�R�H#JKF�BDHj>h�I�H#cUh�ADE�ACH#c�NOJK=�S�BDAM~I�>�E�=�N E�<U=�h�ACN²|KW�c�ILE�ADP=$hUACN�JKW�SUE�ACH#c�Hd�E�<�=6>N�NKH!ILA�>�E�ADP=�I�H#cUd�WUN�ACHc�=L�+=�ILEQH#@UN�=�J:P#=Lh�ACc�n�USp=�JKACR�=�cjE � k�Ë?H�HE�<�=�J NKACR�S�BC=8HJQADcjE�=�J�>ILE�ACH#c�=���=LILE?S�J�H}P=�h^E�HO@+=6N�ADi#c�A���I�>cjE�k]�k Ü k â k���½�½�Ã�½X¾ ��Ã�½ Hr¸´Â¾}µ ��½�à ��´Cµ�Àu¾�ÅQm?NTADc �n�!Sp=�J�ADRT=LcjE � ��=�JKJ�H#JKN�{�=�JK=^BDH�{6�0>�P%~=�J�>i#ACcUi â k É � >I�JKH#N�N�N�W�@%|K=�ILE�N��4>cUh�>ILI�H#JKh�ACcUi#BDF�qhUAD�+=�J�=Lc�I�=LNtADc >�I�I�WUJ�>I�F�R�W�NKE@+=�ADcjE�=�JKS�J�=�E�=Lhx{4AME�<àI�>�WUE�ADH#c��wNK=�=O;n>�@�BC=�]j��k �VJKJ�H#JKN8{0=LJ�=�>c�>BMF(N�=�hyADc�E�<�=�N�>RT={v>�Fy>�N8B�>�E�=�c�ILAC=LN8W�N�ADc�i�>t]x��RT=LRTH#J:F�BCHj>h�� �ÕÜ ��H#S+=LJ�>�E�ACH#c�� �ÕÜ ��h�A���ILW�BDEGFU� �Ü ��>�c�NK{�=�J��?RTA �!=�h!~�h�=�NKACi#c �&����� ��k?; <�=�H#cUBDF�N�ADi#c�A%��I�>cjE?=L�+=�ILEb{v>N?E�<�=`RT=LRTH#J:FBCHj>�ht=L�+=�I�E � �t� â � � �j�q_ Ü É!k Ï É!�(S #ÕkÂÝ � �"%/'*)X_ Ü É!kßZ#Z,+�kVÐVB�>�c�c�=�htI�H#R�S�>JKACN�Hc�N�J�=�~P#=�>BC=Lh�NKACi#cUA%��I�>cjEvh�AM��=LJ�=�cUI�=�N @p=LEG{�=�=Lc^E�<�=8J�>�c�h�H#RÞBC=�E�E�=LJvI�Hc�h�ADE�ACH#cY>c�h�=�>�IX<�H�dE�<�=?HE�<U=�J�E�<�J�=L=bR�=�R�H#JKFOBDHj>hTI�H#c�hUADE�ADH#ce�%>cUhYc�H�HE�<�=�JqI�HRTS�>�J�ACNKH#c�N�{0=LJ�=8NKACi#cUADd�~ACI�>cjE�k�mbBME�<�H#WUi#<�c�H�HE�<�=LJ4Rt>ADc�H#J ACcjE�=�J�>�ILE�ADH#c�=L�+=�I�E�N4{0=LJ�=$N�ADi#c�A%��I�>cjE��!{0=$W�N�=LhS�B�>�c�c�=�h^I�H#R�S�>JKACNKH#c�N E�HOE�=LNKEQE�<�=`>N�NKH!ILA�>�E�ADP=$ILH#cUd�W�NKACH#c�=L�+=�I�E�N?ACc�=�>IX<^RT=LRTH#J:FBCHj>�h � H#S+=LJ�>�E�ACH#c � hUA���I�W�BMEGFxI�H#c�hUADE�ADH#c�� %('*)�_ Ü k âU� ��k�mbNuI�>c-@p=tNK=�=�c-d�JKH#R;n>�@�BC=�]��UN�ACic�A%��I�>cjE4>NKN�H(I�A�>�E�ADP=8I�HcUd�W�N�ADH#c�=L�+=�I�E�N {0=LJ�=$H#@�NK=�JKP=�h^H#c�BDFTW�c�hU=�J E�<�=J�>cUh�H#R BD=LE�E�=�J ILH#c�h�AME�ACHc�Nv{4ADE�<�@pHE�<^>�h�h�ADE�ACH#c�>�c�h^RuW�BDE�ACS�BDACI�>�E�ACHcTS�JKH#@�BD=�R�N�k

GcuNKW�R^��E�<�=qJ�=LN�W�BME�N\Hd�@pHE�< �n�USp=�JKACR�=�cjE�N � >�c�h Ü I�BC=�>J�BMF�h�=LRTH#cUNKE�J�>�E�=�{�H#J�f%ACcUiRT=LRTHJKFàJK=�N�HW�J�IL=Th�=LRt>�c�h�N$ACcyE�<�=�P#=LJ�A���I�>�E�ACH#cxHd0N�ACR�S�BD=O>J�AME�<�R�=LE�ACI�S�JKH#@�BD=�R�N�k�Ö<�=�c�N�WU@(|K=�I�E�Nq<�>hOE�H�i#=Lc�=�J�>�E�=4J�>�c�h�H#R N�=�JKAC=LNqH�d�BD=LE�E�=�JKN�{4ADE�<UACcO>�S�J�=Lh�= ��c�=�hTN�=LEHdVNKAM�^BC=�E�E�=LJ�N �>@pI�h�=�d �T{4<�ACBD=$P=�J�AMd²F(ACc�iTS�J�H#@UBC=�R�N���E�<�=LF�N�<UH�{�=�hyBC>J�i#=LJ4h�A���I�WUBDEGF=L�+=�I�E�NO>c�h�c�H�BDH#c�i#=LJ`NK<�H}{0=Lh >�c%FsI�HcUd�W�N�ADH#c-=���=LILE�NuACc �\; N��V>cUh�>�N�ADi#c�A���I�>cjE

Page 19: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � +�)

� ���S���"#�$ ��%�#��� �������I���! ���� ��������

&(')� ')� ')� &(')� ')� ')�

*,+-+/.10�.12436587�2:9);1<>=@?'�BAC 1��B�rs����U DNJFE �IH�G6� �ID�GFK �IH�HNH �IHNJ�J J�J�KO ����5�� �[QPJa � F E � F � H F J � F � � F � H F �

R I 1�!�����%�� S�BT��UC��V$VC��#�W�X�%��Ars����U ��H�IH �#��H5� �����NK �5�BE�L �5��D�M EO ����5�� �[QPJa M F J M F L H F � M F L M F � H F M

'Y��A4��A$�1�#���[Z-�� T S����rs����U D��NM �5��LNM �FE�HNK ��GFM �5��HNJ �IL5��KO ����5�� �[QPJa M F E M F � H F � G F � G F � H F �

_`��A[a��B�bZ)�B T S����rs����U �cGNMNM �IM�GFD \ DNJ ��E�DNM ��E*��H \�E�MO ����5�� �[QPJa � F � J F E � F DNK L F � D F J � F GFK

fhg ;10�.1i-;!.1j�k$0�.1243l587B2m9);1<>=@?'�BAC 1��B�rs����U D�HND �FEi� ��E*�IK �FE�D �IH�M� J�MNKO ����5�� �[QPJa M F J M F L H F � M F G G F � H F E

R I 1�!�����%�� S�BT��UC��V$VC��#�W�X�%��Ars����U �FE�G �5��MFJ �IL�IK �IHNJ�H �IH��NJ GFJ�KO ����5�� �[QPJa M F J M F L H F � M F G G F � H F E

'Y��A4��A$�1�#���[Z-�� T S����rs����U ��H5��� �5�IJ�L �#�NE�K �IM�5� �IMNJ�D G>E�KO ����5�� �[QPJa G F � G F � H F H M F � G F HeH F H F �

_`��A[a��B�bZ)�B T S����rs����U ��D�GFL �ID�DNH M�G ����GFH ���FE�H M�HO ����5�� �[QPJa M F � J F J � F GFK L F H D F E � F E�K

n�oBoWpSqWrWsut�v�suwWxByXzC{|m}�~B�B�#���%���#�I���I�Q�^�#���I�Q�#�B�^�����X�N|:}�~I�T�#�����B�!�^�#���B�!�#�B�^�����X�N|:��~B�I�#�I�%���#�I���B�Q�^�#�8�S�����S�X���� �^�#�I� ���T���c�/���#�I���I�Q�^�#���S�����S�X�

> �@?�A�B�� D��^=�>�c��^=�h�AC>c-��>�E�=�c�ILAC=LN��wR�N�=LI}�$>c�h�Ðz=�J�IL=�cjEX>�i#=��VJ:~J�HJ�Nnd�H#J\E�<�= �§>BDN�= ÐVJKH#@�BC=LRTNv�wILH#cUd�W�NKACH#cO>cUhOË?H#c!~¢Ú0H#cUd�W�NKACH#cOÐVJKH#@!~BC=LRTN���ä �n�!S+=LJ�ADRT=Lc%E Ü k

Page 20: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

+�� ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

I�H#c!d�W�N�ADH#c-=L�+=�I�E�ADc�=�JKJ�H#JKN�k Gc-ILH#c�h�AME�ACHc�N${4<U=�J�=�E�<�=�F�<�>hsE�H�S+=LJKd�H#JKR >c�HE�<�=�JI�H#cUI�W�JKJ�=�cjE�EX>NKf�ACcjP#H#BMP(ACc�i6R�ACc�ADR�W�RãBDHj>hOH#cOE�<�=QI�=LcjE�J�>�Bp=��!=�I�W!E�ADP=8NKF(N:E�=�R��(N�W�@!~|K=�I�E�NuN:E�ADBCB�NK<�H}{0=Lh�I�H#cUd�WUN�ACHcs=���=LILE�N`ACc �n; N��zc�H^I�H#cUd�WUN�ACHcs=���=LILE�ADcs=LJ�JKH#J�NL�n>cUhNKE�>c�h�>JKhshUA���I�W�BMEGFà=L�+=�I�E�NLk �?>}P(ADc�i�E�=�N:E�=LhsE�<U=�SpHE�=�cjE�AC>B�=L�+=�I�E$Hd�E�<�=OH}P#=�JKBCHj>�hHd4H#c�=tHd E�<�=TN�BC>}P=YNKF(N:E�=�R�N���c�>�RT=LBDFyE�<�=tS�<�H#c�HBCH#i#ADI�>BVBDH!HSe�\E�<�=YS�JK=�N�=LcjEOh�>�EX>N�W�ii#=�N:EVE�<�>�E\E�<�=0I�=�cjE�J�>B�=��!=�I�W!E�ADP= S�B�>�F(NV>bILJ�AME�ACI�>B%J�H#BD=0ADc�N�ADRTS�BD=�ILH#i#c�AME�AMP#=v>�J�ADE�<!~RT=�E�ADIk��^H#J�=LH}P#=�JL�VI�H#cUN�ACN:E�=Lc%Eu{4ADE�<��r=�RT>ACJK=T=�E�>B�k�� �}È#È ]j�$>cUh�>NuhUACN�ILW�N�NK=�h�ACcE�<�>�EvS�>Sp=�JL�UILH#cUd�W�NKACH#cY=���=LILE�N0{0=LJ�=�>�BCN�Huh�ACNKJ�W�SUE�=�hY@jFTS�J�H@�BC=LRÞhUA���I�W�BMEGF��wN�Sp=�ILADd�~ACI�>BCBMF#�0ADc E�<�=�ADJ �n�!S�J�=LACR�=�cjE � � �r=�RT>ACJK=^=�EY>B�kÖJ�=�SpH#J:E�=�h É ��~GR�N�=LI^ADcjE�=�J:d�=�JK=�c�IL==L�+=�I�E�N {4ADE�<�BC>J�i=bS�JKH#@�BC=LRTNv>c�h ��Ü!� ~�RTNK=�I8ADcjE�=�J:d�=�JK=�c�IL=$=���=LILE�N4{4AME�<�NKRt>BDB�S�JKH#@!~BC=LRTN���k��\ACc�>BDBDF�E�<�=4h�ADN�JKW�SUE�ADH#cOHd�E�<�=Q>N�NKH!ILA�>�E�ADP=QILH#cUd�W�NKACH#c�=L�+=�I�E0ADc �n; N0>�c�hTAME�NACc�ILJ�=�>N�= ADc�=�J�JKH#J�Nn@%F`E�<�= IL=�cjE�J�>B�=��U=LI�WUE�ADP=QH}P=�J�BDHj>h�{0>N�H#@�NK=�JKP=�hO{4ADE�<�@+HE�<O>h!~h�ADE�ACH#c�>c�h�RuW�BDE�ACS�BDACI�>�E�ACHc�S�J�H#@UBC=�R�N?{4<U=�càS�JK=�N�=LcjE�=�hyE�Hi#=LE�<�=�JQ{4ADE�<UACc�E�<�=uN�>RT=E�=LNKEQH#J4ACc�h�AM��=LJ�=�cjE E�=�NKE�N��§ACc�E�<�=6J�>c�hUH#R BC=�E�E�=�J I�Hc�h�ADE�ACH#c�Hc�BDFk

�\*�� �z. �z1 � � Î9��U7�5�� ��9¢20.; <�=�i#Hj>�B+HdrE�<�ACN0NKE�WUhUFt{0>N0E�H�h�=LE�=�J�R�ACcU=?{4<�>�Evf(ADc�h�Hdz>�EKE�=Lc%E�ACH#c�>B+JK=�NKH#W�J�IL=�NL�

ADd4>�c%F��>JK=tJK=�BC=�P�>cjE`d�H#J$N�ADRTSUBC=�>J�AME�<�R�=LE�ACIOS�JKH!IL=�N�NKACc�iUk �s=tWUN�=�h-E�<�=thUW�>BM~lEX>NKfRT=�E�<�H(h�>�c�huBDH!H#f�=�h`>�EzE�<�=�h�ACNKJ�W�SUE�ACH#c$HdUN�W�@(|K=LILE�N��Sp=�J:d�H#J�RT>c�IL=q{4<U=�cuE�<�=0S�<UH#c�H�~BCH#iACI�>�BBCH(H#S6>cUh6E�<�=�I�=Lc%E�J�>B%=��U=LI�WUE�ADP=�Hd({�H#J�f%ACcUi?R�=�R�H#JKFQ{�=�J�=qH#Je{�=�JK=�c�H�E\H}P=�J:~BCHj>�h�=�hOh�W�JKACc�i6S�JKH#@�BD=�R P=�JKA%��I�>�E�ADH#cek �s=4Rt>cUACS�W�BC>�E�=LhuE�<U=QhUA���I�W�BMEGF�Hd+S�J�H@�BC=LRTN>c�h�E�<�=0SpHE�=LcjE�A�>�B(d�H#JzACcUh�W�I�ADc�i�>NKN�H(I�AC>�E�AMP#=qI�H#cUd�WUN�ACHcekn; <�=0S�J�=LN�=�cjE�h�>�EX>8>BDBCH}{�W�NE�H�h�=LBCADc�=�>�E�=b{4<�>�E4f%ADc�h�N Hdr{�H#J�f%ADc�iORT=LRTH#J:F�J�=�NKH#W�JKI�=�NQ>JK=�I�JKADE�ADI�>B§d�H#J0P=�JKADd²F(ACc�iN�ADRTS�BD=�SUJ�H#@�BD=�R�NnBDACf=0Z � ]`_ â#Ü k�Í�ADP=�c�E�<�>�EnE�<�ACN\<�>N�@p=�=LcOI�H#c�NKACh�=LJ�=LhO>NV>?dw>ADJ�BMF>WUE�H#Rt>�E�ACI`>I�E�ADP(AMEGF�ADcà>h�W�BME�NL��E�<�=uS�J�=LN�=�cjE$J�=LN�W�BME�N8<�>}P=OACR�S+H#J:EX>cjE?ACR�S�BCADI�>�E�ACH#cUNd�H#Jvd�WUE�W�J�=$>JKADE�<URT=�E�ACIbACcjP#=LNKE�ADij>�E�ACH#c�NLk Gc�E�<�=6J�=LNKEQHdzE�<�ADN N�=�I�E�ADH#ce��{�=`h�ADN�ILW�N�N4E�<�=f%ACc�h^Hd�>�EKE�=�cjE�ACH#c�>�BzJK=�NKH#W�J�IL=�NbE�<�>�Eb>J�=$J�=Lg%W�ACJK=�h�{4<�=Lc�N�HBDP(ACc�iT>JKADE�<URT=�E�ACI6S�JKH#@!~BC=LRTNL�!E�<U=8S+H�E�=�cjE�A�>BDNqd�H#Jqd�WUE�WUJ�=8ADc%P=�N:E�ACi#>�E�ADH#c�N��!>c�h���RTHJ�=Qi#=�c�=LJ�>BDBDF�(E�<�=�ACNKN�W�=8H�d{0HJ�f%ACc�i�R�=�R�H#JKFTJ�=LN�H#W�JKI�=LN8>c�h�I�Hi#c�ADE�ADP=�>ILE�ADP(ADE�AC=LN�kÉ!k � k4�6 � ¢¡�£p �¤w¥}£§¦�¨ ��¡ $Y¦�£ �%ª�¤D£ $�¡�£+ l¦�¨+¦�©�¤l �­($�¡� w¤w¬��T; <�=QJ�=LN�W�BME�NqHd �n�!S+=LJ�ADRT=Lc%E�N �>c�h Ü >�J�=$I�H#c�NKACN:E�=�cjEQ{4ADE�<�E�<�=�{0H#JKf%ACc�i�RT=LRTHJKF�<jF(S+H�E�<�=LN�ACN4E�=LNKE�=�h�<U=�J�=�k �Ö<�=LcN�W�@%|K=�ILE�N�P#=�JKA%��=LhÓE�JKW�=�S�JKH#@�BD=�R�N��vE�<U=�N�AD��=^Hd�E�<�=�S�J�H#@UBC=�R h�A ��I�W�BMEGF =���=LILEtACc!~I�JK=�>NK=�h�ACcyE�<U=tN�=LI�H#cUh�>JKFyE�>N�fyI�Hc�h�ADE�ACH#cUN$ILH#R�S�>J�=LhsE�H^E�<U=TILH#cjE�J�HB�ILH#c�h�AME�ACHcek; <�=�S�J�=Lh�ACI�E�=�hxE�JK=�c�hyd�H#J6>�B�>JKi#=�J�S�JKH#@�BD=�R hUA���I�W�BMEGFà=L�+=�I�E`{0>N6d�H#W�c�hy{4<�=�E�<�=LJE�<�=q{0HJ�f%ACc�i?RT=LRTHJKF�NKW�@!~GN:F(NKE�=LRãADc%PH#BDP=�hu{0>NzE�<�=qS�<�H#cUH#BCH#iACI�>�BjBCH(H#S6H#JzE�<�=0IL=�c!~E�J�>B�=��!=�I�W!E�ADP=YNKF(N:E�=�R�N�k �E�N�WUi#i#=�N:E�NuE�<�>�E$E�H�P=�JKADd²FyE�JKW�=tS�JKH#@�BD=�R�N���>�E�E�=LcjE�ACHc�>BJ�=LN�H#W�JKI�=LNvACcT@+HE�<TE�<�=bS�<UH#c�H#BDH#i#ACI�>B�>cUhtI�=LcjE�J�>�B+=��U=LI�WUE�ADP=�NKF(NKE�=�R�Nv>JK=bACcjPH#BDP=�hek; <�=�=L�+=�ILETHdQE�<�=�ILH#c�I�WUJ�J�=LcjETE�>N�f-{0>NOi#J�=�>�E�=LJOH#c hUA���I�W�BMEOS�J�H@�BC=LRTNL��>�N�SUJ�=�~h�ACI�E�=Lh�@%FTE�<�=?{0H#JKf%ACc�i�R�=�R�H#JKF�<jF(S+H�E�<�=LN�ACNL��@+=LI�>WUN�=8E�<U=�N�=�SUJ�H#@�BD=�R�Nv>JK=8<�>JKh�=�J

Page 21: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � +,;

E�H�JK=LE�JKAC=�P#=vADc�RT=LRTH#J:F`>c�h�J�=Lg%W�ACJK=vRTHJ�=0R�=�R�H#J:F`JK=�NKH#W�J�IL=�NVE�<�>c�=�>N:F�S�JKH#@�BD=�R�N�k; <�=�JK=Ld�H#JK=�zACcy>�N�AME�W�>�E�ACHc�{4<�=�JK=�S�>JKE6HdqE�<U=�J�=�NKH#W�JKI�=�N$<�>hyE�H�@p=�h�=LPHE�=LhsE�H�>N�=LI�H#c�h�>JKF-E�>N�f§��h�A �TILW�BDEuS�J�H@�BC=LRTN�@p=�I�>R�=Y=LP=�c�<�>J�hU=�JuE�HàJ�=LE�J�AD=LP#=�k �Ö<�>�EOACNACR�S+HJKEX>�c%EQADN?E�<�>�EbE�<�=�=L�+=�I�E8HdV{�H#JKf(ADc�iYR�=�R�H#JKF�BDHj>h^I�H#c�hUADE�ADH#c�N4{v>�N8c�HEbI�H#c!~NKE�>cjE�>I�JKH#N�N�S�JKH#@�BD=�R h�A���I�WUBDEGFpät; <�=�NK=�ILH#c�h�>J:F-EX>�N�f�hUACh�c�HE�>h�h�>�I�Hc�NKE�>cjE>R�H#W�cjE6HdqS�J�H(I�=LN�NKACc�i��wA�kß=�kD�rIX<�>�c�i#=OACcàADc%E�=�JKI�=�S!E��8@�WUE$>hUh�=�hxh�AD�+=�JK=�cjE$>R�H#W�cjE�NHd6S�JKH!IL=�N�NKACc�i �wAlkÇ=kM�vIX<�>�c�i#=�NtACc�NKBCH#Sp=�N���ADc�=�>�NKF�>c�hÓ<�>�J�hÓS�JKH#@�BD=�R�N�k GcÓN�WUR^�S+=LJKd�H#JKRt>�c�I�=$H#c^E�<�=�NK=�<�>JKh�S�JKH#@�BD=�R�NQADcjE�=�J:d�=�JKJ�=�h^E�<�=`RTH#N:E4{4ADE�<�E�<�=`N�=LI�H#c�h�>JKFEX>NKfO>NVE�<�=QJ�>�E�=4Hd+S�J�H(I�=LN�N�ADc�iuH�d�h�A ��I�W�BME�SUJ�H#@�BD=�R�N�{v>�N�NKBCH}{0=Lhth�H}{4cTRTH#JK=vE�<�>�cE�<�>�E?H�dn=�>N�AD=�J S�JKH#@�BC=LRTN WUc�h�=�J {�H#J�f%ADc�iTR�=�R�H#J:FYH}P#=LJ�BCH#>h�I�H#c�hUADE�ADH#cek

�ÖADE�<^dw>BDN�=$S�J�H#@UBC=�R�N��pc�Ht>N�NKH!ILA�>�E�ADP#=`I�H#c!d�W�N�ADH#c�=���=LILE�N?{0=LJ�=�H#@UN�=�J:P#=LhxADc �n; NW�c�h�=LJ?E�<�=uJ�>c�h�H#R BD=LEKE�=�JQI�Hc�h�ADE�ACH#c�k-�?H}{�=LP#=LJ��eE�<�ACNQ>NKN�H(I�A�>�E�ADP=`ILH#cUd�W�NKACH#c^=L�+=�I�E{v>�N`BC>J�i#=LJ8ACcx>ILI�W�J�>ILFyWUc�h�=�J6E�<U=�J�>c�h�HR BC=�E�E�=LJ�I�H#cUh�ADE�ACH#c�E�<�>cxW�c�h�=LJ`>�c%FyH�dE�<�=6HE�<�=�J ILH#c�h�AME�ADH#c�N�kV; <U=�N�=$J�=LN�W�BME�N JK=�ij>JKh�ACcUi�BC>�E�=Lc�ILFY>c�h�>ILI�W�J�>ILF�RT>�FYN�=L=�RACc�ILH#c�NKACNKE�=�cjE��§>�BDE�<UH#W�i#<�S�JK=�h�ADILE�=Lh^@jFYE�<�=�{0HJ�f%ACc�i�R�=�R�H#JKFTJ�=LN�H#W�JKI�=$<jF!SpHE�<�=�NKACN�kGc�h�=L=�he�UE�<�ACN�<jF!SpHE�<�=�NKACNvS�JK=�h�ADILE�N�E�<�>�EvBC>�E�=Lc�ILF�N�<UH#W�BChtACc�ILJ�=�>�N�=b@p=�I�>W�NK=8E�<�=?h�W�>BEX>NKf�JK=�h�W�IL=�N6E�<�=O>�RTH#WUc%E8J�=�NKH#W�JKI�=�N$>�P�>ACBC>@�BD=�+>c�hàE�<�=�d�=�{0=LJ�E�<�=�JK=�N�HW�J�IL=�N6h�=�~P#HE�=�h�E�H`E�<�=8SUJ�ACRT>J:F�E�>N�f§�(E�<�=8BDH#c�i#=LJ�E�<�=8B�>�E�=�cUILF#kqÆ8c�=?{v>�FtE�<�ACN�I�H#WUBCh�<�>SUS+=LcACN�NKW�i#i#=LNKE�=�h�@%F�h�ADP(ADh�=�h�>�E�E�=LcjE�ACHc�RTH(h�=�BDN`E�<�>�E�E�J�AC=Lh-E�H�IX<�>J�>I�E�=LJ�ACNK=�H#W�J�BDACR�~ADE�NbH#càRT>c�>iACc�iTN�ACRuW�BDE�>c�=�HW�N?ILH#i#c�AME�AMP#=uSUJ�H(I�=�NKN�=LN�kuÆ�cU=�I�BC>N�N8H�dVE�<�=LN�=�R�H!h�=LBCN>N�NKW�R�=y>cÖ>�E�E�=�cjE�ADH#c�>BQ@pHE�E�=�BCcU=�IXf E�<�>�ET{0H#WUBCh BCADRTAME�H#W�JtI�>S�>ILADEGF E�H-=��U=LI�WUE�=EG{0HTEX>NKf(N?I�H#cUI�W�JKJ�=�cjE�BDF��w=�kßi�kM�+Ðn>NK<�BC=LJ�� �}È Z]�� �}ÈÈ ]�ÊpÐn>NK<�BC=LJbÌ�ÙH<�c�NKE�H#ce� �}È Z È ��k,8W�=OE�H^E�<�ACN$@pHE�E�BC=�cU=�IXf§�nIL=�JKE�>ACcsNKE�>i#=�N`Hd S�JKH!IL=�NKN�ACcUi�I�>�c�c�HE`@+=TS+=LJKd�H#JKRT=LhsNKAM~R�W�BMEX>c�=LH#W�NKBDFpÊrE�<�=LN�=ONKE�>i#=�N6<�>�P=OE�H�@+=�Sp=�J:d�H#J�R�=�hàADcxNK=�g%W�=Lc�I�=�k GcàE�<�=OI�>NK=�H�d>c�>J�AME�<�R�=LE�ACIYSUJ�H#@�BD=�R P#=�JKA%��I�>�E�ADH#c-EX>�N�f§�0>�N�ADc-E�<�ADN�NKE�W�hUF#��ADE�ADN�S+HN�N�AD@�BC=TE�<�>�EE�<�=�JK=�NKS+H#cUN�=�~�=��!=�ILWUE�ADH#cyNKE�>i#=�ADN8h�=�BC>�F#=�hàNKH�E�<�>�E��+{4<�=LcyN�W�@(|K=LILE�N$ILH#R�S�>J�=Lh�E�<�=J�=�E�J�AD=LP=�h�>c�N:{0=LJ�{4ADE�<-E�<�=YS�JKH#SpH#N�=Lh�>c�NK{�=�JL�VE�<�=�ADc%E�=�J:d�=�J�=Lc�I�=�>�c�NK{�=�J�RT>�FscUHBCH#cUi#=�JQ@+=u>ILE�ADP�>�E�=�hà>cUh�E�<�=LJ�=�d�H#J�=`c�HYBCHc�i#=�J?>��+=�I�E�N?E�<�=�NKW�@(|K=�I�E��ÇN�B�>�E�=�c�ILAC=LN�k GcHE�<U=�JO{0H#JKh�N��vE�<�=�ACc�ILJ�=�>�N�=�ACc�B�>�E�=�c�I�F�ACc�E�<�=�h�W�>�BM~�E�>N�f�I�H#c�hUADE�ADH#c�>@�NKH#J�@�N�E�<�=h�AD�+=�JK=�c�IL=�N8@p=LEG{�=�=Lcyc�H#c!~G>N�NKH!ILA�>�E�ADP#=`>c�h�>N�NKH!ILA�>�E�ADP#=$I�HcUd�W�N�ADH#c�S�JKH#@�BD=�R�N�k4; <�ACNJ�>ADN�=LN�E�<U=8ACcjE�=LJ�=LNKE�ADc�i�ADN�N�WU=?d�H#J�I�H#i#cUADE�AMP#=b>J�AME�<�R�=LE�ACI4J�=LN�=�>�J�IX<�=LJ�N Hdr{4<�ADIX<YNKE�>i#=LNACc�>JKADE�<�RT=�E�ADIbS�JKH#@�BC=LR NKH#BDP(ACcUi�J�=Lg(WUACJ�=6>�E�E�=LcjE�ACHc�>BeJK=�N�HW�J�IL=�NQ>c�h�{4<�ADIX<^h�H�cUHE�kGcjP#=�N:E�ADij>�E�ADH#c�HdzE�<�ADN g(WU=�NKE�ACH#c�{�H#W�BCh�E�=�BCB�W�N4ADd¢�UBDACf�=�ACc�HE�<�=�J4I�Hi#c�ADE�ADP=8h�H#RT>ACcUN��{4ADE�<�ACcuE�<�= N�>�RT=0E�>N�f§�jNKH#RT=0Hd§E�<�= S�JKH!IL=�NKN�=�Nq>JK= >WUE�H#RT>�E�ADI8��=kÇi�kD�jSp=�JKI�=LSUE�W�>�B�=�c!~I�H(h�ACcUi%�z>�c�huNKH#RT=�J�=Lg(WUACJ�=�>�EKE�=�cjE�ACH#c�>�B(JK=�NKH#W�J�IL=�N4��=kÇi�kM�#J�=LN�SpH#c�N�=0=��!=�ILWUE�ADH#c§��k\; <�ACN{0HW�BCht>BCNKH$<U=�BCSTW�N�E�H$IX<�>J�>�ILE�=LJ�ADN�=?E�<�=Q=��U>ILE�c�>�E�W�J�=QHd�=�>IX<YSUJ�H(I�=�NKNq{4AME�<�ADcTILH#i�~c�ADE�ADP=�>JKADE�<URT=�E�ACI6R�H!hU=�BCNQ>cUhàRt>f�=uNKH#RT=$N�Sp=�ILA%��IuS�J�=Lh�ACI�E�ACHc�J�=Lij>JKh�ACc�i�dw>ILE�H#J�NE�<�>�E?I�>c�>��+=�ILEQS�>�JKE�ADI�W�BC>JvN:EX>i#=LN�k

Page 22: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

+�� ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

; <�=QN�ADE�W�>�E�ACH#c�ADNVh�AD�+=�JK=�cjEqJ�=�i#>J�h�ADc�i6>ILI�W�J�>ILFk Gct>6NKE�>c�h�>JKhTILH#c�h�AME�ADH#ce�{4<�=LcN�W�@%|K=�ILE�N <�>�P#=QE�H`P=�JKADd²FT>cY>�N�N�H(I�AC>�E�AMP#=QI�H#c!d�W�N�ADH#ctS�JKH#@�BD=�R��#E�<�=?S�J�H#@UBC=�R ��J�NKEv>S!~S+=�>J�N�E�H6@p=b>6S�BC>W�N�AD@�BC=0I�H#JKJ�=�I�E0=Lg%W�>�E�ADH#ce�(>c�hOd�W�J:E�<�=LJqSUJ�H(I�=�NKN�ADc�iuADNVc�=�IL=�N�N�>JKF�E�HJ�=G|K=�ILE�E�<�ACNb=�g%W�>�E�ACH#cek6m?N6>YI�H#c�ILW�J�JK=�cjE6EX>NKf�W�NK=�N6W�SàS�>�JKE�Hd�E�<�=�J�=LN�H#W�JKI�=LN$cUH#J:~Rt>�BCBDF`h�=�P#HE�=�htE�H`E�<UACNVd�W�JKE�<�=�J�S�JKH!IL=�NKN�ACcUi��(E�<�=QS�J�=LN�=�cjE0h�>�EX>6H#ct>I�ILW�J�>I�FON�W�ii#=�N:EE�<�>�E�N�W�@(|K=LILE�N\N:E�ACBDB�E�<�ACc�f4E�<�>�ErE�<�=LN�=q>NKN�H(I�A�>�E�ADP=VS�J�H@�BC=LRTNr>�J�=�E�JKW�=knÚ0H#c�NK=�g%W�=Lc%E�BDF�E�<�=�FuJK=�NKS+H#cUh :E�JKW�=��8R�H#JK=�Hd²E�=�c�>�c�h�Rt>�f=0R�H#JK=�=LJ�J�HJ�N��ACc`E�<�ACNz{0HJ�f%ACc�ibRT=LRTH#J:FH}P#=�JKBCHj>�h^ILH#c�h�AME�ACHcekmbN6R�=�cjE�ADH#c�c�=Lhx=�>J�BDAC=LJ��eAME�I�H#WUBChy@+=O>�J�i#W�=LhàE�<�>�E�E�<�=Oh�>�E�>�JK=�SpH#JKE�=�hy<�=LJ�=�>J�=

E�<�=4JK=�N�WUBDE�NqHdpE�<�=4ADc�<�=�JK=�cjEqh�A���ILW�BDEGF�H�d�H#WUJqNK=�ILH#c�h�>J:F�EX>NKf%N�J�>�E�<�=LJVE�<�>cOHd+E�<�=LACJEX>SUS�ACc�iyh�AM��=LJ�=Lc%E�{�H#JKf(ADc�iyRT=LRTHJKFsI�H#R�S+Hc�=�cjE�NLk�; <�ACNOSpH#ACcjE�<�>N�@+=L=�c�J�>ADN�=LhN�=�P#=�J�>BvE�ADRT=LN`ADc-NKE�W�h�AD=�N�W�NKACc�i�E�<�=Yh�W�>BM~lEX>NKfxR�=LE�<�H(h�>c�h-<�>N��VR�H#NKEuJ�=LI�=�cjE�BDF#�@+=L=�cxh�ACNKI�W�NKN�=Lh�>�E8BC=�cUiE�<y@jFà�rH#i#AD=�=LE$>�BlkT� �}ÈÈ ]%�?ADc�E�<�=�ILH#cjE�=��(E$Hd�>JKADE�<URT=�E�ACI�k; <�=$N�>R�=6@�>N�ADI6>J�iW�RT=LcjE?WUN�=�h^@jF���Hi#AC=8=�E?>Blk�I�>�c^@p=6W�N�=Lh�<�=LJ�=��c�>RT=LBDFTE�<�>�EE�<�=�ILH#c�I�=LSUE�HdQh�A���ILW�BDEGF�J�ACNKf%NOE�<�=�h�>cUi#=�JOHdQI�ADJ�ILW�B�>JKADEGFÓ�wA�kß=�kD�VE�<U=�N�=�E�>N�f%N�>J�=RTHJ�=�h�A���I�WUBDEGF�@+=LI�>WUN�=�E�<�=LF�J�=LN�W�BMEtADc�i#JK=�>�E�=�JTh�ACNKJ�W�SUE�ACH#c�Ê?h�AM��=LJ�=Lc%Et>R�H#W�cjE�NHd6h�ADN�J�WUSUE�ADH#c�JK=�N�WUBDEYADc�h�AM��=LJ�=Lc%Eth�=�iJ�=�=LN�Hd�h�A ��I�W�BMEGF���>c�hÓADNtc�H�EY>�SpH}{0=LJKd�W�B=��!S�BC>c�>�E�H#JKF�I�H#c�N:E�JKW�ILE�k�; <�=�=LRTS�ADJ�ADI�>Bq=LP(AChU=�c�IL=�R�H#N:E�BDFxILADE�=Lh�N�<�H}{4NOE�<�>�E�E�<�=h�A���ILW�BDEGF�HdQN�=�ILH#c�h�>�JKF�EX>�N�f%NOACN�>àSpH!H#J`S�J�=Lh�ACI�E�H#J�H�d?NKW�@(|K=LILE�NL��Sp=�J:d�H#J�RT>c�IL=YACch�W�>BeE�>N�f%N��w=kÇi�kM�§�rH#i#AC=���Òv>hUh�=�BD=LF#�p�^>c�=� ,8H#cUIX<�ACce�§ÌÛÑ!<�=�S!EX>f§� �}È Z È Ê �ÖACIXf�=�c�NL�Ì �s=�ADij>J:E�c�=LJ�� �}È ZjÉ!Ê��q=L<TÌ �ÖADIXf=�cUN�� �}È Z#Zj��k\m?BCNKH��#ACc`E�<�=vILH#cjE�=��!EqHd�E�<�= S�JK=�N�=LcjE=��!Sp=�J�ADRT=LcjE�N���E�<�=thUA���I�W�BMEGFx<%F(SpHE�<U=�N�ADN�h�H(=�N�cUHE�=��USUB�>ADc�<�H}{ÞN�=LI�H#c�h�>JKFxEX>NKf%Nh�AD�+=�JK=�cjE�AC>BCBMF�>��+=�I�E0SUJ�H#@�BD=�R�N�H�deh�AM��=LJ�=�cjE�N�AD��=�N�H#JqS�J�H#@UBC=�R�NV{4ADE�<th�AM��=LJ�=�cjEqEGF(S+=LNHd\J�=�NKS+Hc�N�=LN�k

Gc�N�W�R��E�<�=vS�JK=�N�=LcjE�h�>�EX>?H#c�@+H�E�<uE�J�W�= >�c�h�dw>BCNK=0S�JKH#@�BD=�R�Nn>JK=vI�Hc�N�ADNKE�=LcjEV{4ADE�<E�<�=`<jF!SpHE�<�=�NKACNbE�<�>�EQP#=�JKADd²F(ACcUitN�ADRTSUBC=$>J�AME�<�R�=LE�ACI6S�JKH#@�BC=LRTNQJ�=Lg%W�ACJK=�N8>�E�E�=LcjE�ACHc�>BJ�=LN�H#W�JKI�=LN�k�; <�=�{0H#JKf%ACc�iyR�=�R�H#JKF�<%F(SpHE�<U=�N�ADNO<�>NOJ�=LI�=�AMP#=Lh�N�WUS�S+HJKEO<�=LJ�=�{4ADE�<>�P=�J�A���I�>�E�ACHcxE�>N�fàE�<�>�E`{0>N`>S�S�JKH#S�JKA�>�E�=�d�H#J�E�=�NKE�ACc�i�E�<�=�SpH#N�NKAC@�ADBCADEGF^E�<�>�E`@pHE�<J�=�E�J�AD=LP�>B§>cUh�ILH#R�S�>J�ADN�H#c ��h�=�ILACNKACH#c�S�JKH!IL=�NKN�=�N�ACcOI�Hi#c�ADE�ADP=4>J�AME�<�R�=LE�ACIvJK=�g%W�ACJK=Q>�EK~E�=Lc%E�ACH#c�>B\JK=�NKH#W�J�IL=�NLk`��H#J4E�<U=�N�>f�=�Hd�i#=Lc�=�J�>BCAMEGF#�pADEQ{0H#WUBChà<�H}{�=LP#=LJ�@+=uh�=�NKACJ�>�@�BC=E�H�JK=�S�BDACI�>�E�=bE�<�=�NK=���c�h�ADc�i#N W�NKACc�iO>cUHE�<�=LJ��!RTH#JK=8c�>�E�W�J�>�B+EX>�N�f§��BCADf=�>�SUJ�H(h�W�ILE�ACH#cEX>NKf���=kÇi�kD� Ï �sÈ _$a���k`; <�ADNb{�H#W�BChx>BDN�HY=Lc�>@�BD=�W�N8E�H�SUJ�H#@p=�R�H#J�=�SUJ�=�ILACNK=�BDF^E�<�=J�H#BD=�Hd�{�H#J�f%ACcUi�R�=�R�H#J:F^JK=�NKH#W�J�IL=�N$ACcy>JKADE�<�RT=�E�ADI$dw>I�E6J�=�E�J�AD=LP�>B\S�J�H(I�=LN�N�=LN�k�; <U=S�J�H@�BC=LR {4AME�<�E�<�=�P#=LJ�A%��I�>�E�ACH#c�E�>N�f^ADE�N�=�BMdVACN?E�<�>�E?E�<�=�SUJ�H#SpH#N�=Lh�E�JKW�=�>c�N:{0=LJ�N6ACcE�JKW�=�S�J�H@�BC=LRÞP=�J�A���I�>�E�ACHc�<�>�P#=$>�S�J�ADRTADc�iuN:EX>�E�W�N$�wNK=�=�m?N�<�ILJ�>�d²E�� �}È#ÈjÜ Ê!mbNK<�I�J�>�d²E���nAC=LJ�RT>ce�rÌ Òv>J:E�H#BDHE�E�>U� �}È Z]�Ê\Úv>R�S�@+=LBCB�� �}È Z Ï >�>�c�hy@eÊn�r=LRt>ADJ�=�=�E$>BlkM� �}ÈÈU� Ê�}È#È ]UÊ��^ADBCBC=LJ��!Ð\=LJ�BCRuWUE�E�=�J��UÌ á�=�>�E�ADc�i�� ��È Z]�Ê ��@�J�H(h�H��Ì �rH#i#>ce� ��È#È Ýj��k�; <�>�E4ADN��E�<�= RT>ADcu=L�+=�I�E�Hd�E�<U=vS�J�HS+H#NK=�h�E�JKW�= >cUNK{�=�J�N�ADNnR�H#NKE�BDF6E�H�NKS+=L=�hOW�S�E�<U= J�=LE�J�AD=LP�>BS�J�H(I�=LN�NLk0Ò�FYI�H#cjE�J�>NKE���E�<�=$>NKN�H(I�AC>�E�AMP#=�I�HcUd�W�N�ADH#c�>c�N:{0=LJ�N?>J�=8EGF(S�ADI�>BDBDF�>�N�N�WURT=LhE�H$N�BDH�{Óh�H}{4ctI�HRTS�>�J�ACNKH#c���hU=�I�ADN�ADH#cOS�J�H(I�=LN�N�=LN�k ��P#=LctE�<�HW�i#<T{�=QI�>c�cUHE0N�>�F�E�<�>�E

Page 23: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � +�

J�=�E�J�AD=LP�>B\S�J�H(I�=LN�N�=LN$>c�hàI�HRTS�>�J�ACNKH#c���hU=�I�ADN�ADH#c�S�JKH!IL=�NKN�=�N6H(I�ILW�J8N�=Lg%W�=�cjE�AC>BCBMF���N�=L=mbNK<�I�J�>�d²E�� �}ÈÈjÜ Ê ��@�J�H(h�H� Ì ��Hij>ce� ��È#È Ýj���?E�<U=xdw>I�E�E�<�>�E�E�<�=àEG{0H S�J�H(I�=LN�N�=LNRt>�F�@+=�h�AM��=LJ�=Lc%E�BDF->���=LILE�=�h�@%F�>yNK=�ILH#c�h�>J:F�EX>NKf�JK=�RT>ACc�N�>ySpH#NKN�AC@UACBCAMEGF#kx; <�ACNN�W�ii#=�N:E�N�E�<�>�E�E�<U=?JK=LE�JKAC=�P>�B§>c�htILH#R�S�>J�ADN�H#c ��h�=�ILACNKACH#c�S�JKH!IL=�NKN�=�N0Rt>�F�ADc%PH#BDP=?hUADd�~d�=�JK=�cjEQ>R�H#W�cjE�NvH�dz>�E�E�=�cjE�ADH#c�>BpJ�=LN�H#W�JKI�=LNQHJ0RT>}FTACcjPH#BDP=8J�=LN�H#W�JKI�=LN ACc�>�h�AM��=LJ�=Lc%EN�W�@(~GNKF(N:E�=�R HdeE�<�=Q{�H#JKf(ADc�iuR�=�R�H#J:FONKF(NKE�=�R �wN�=L=8á6>�F#=?=LE >�BlkM� ��È Z â �jd�H#J�>`NKACR�ACB�>�J>J�iW�RT=LcjE���k?Ú0H#cUN�ACN:E�=Lc%Eb{4ADE�<�E�<�ADN��§{0=`d�H#W�c�h�E�<�>�EbH}P#=�JKBCHj>�h�ACc�iOE�<U=uS�<�Hc�H#BCHi#ACI�>BBCH(H#Sà>cUh�E�<�=�IL=�cjE�J�>Bn=��!=�I�W!E�ADP=ONKF(NKE�=�R�N�ACc�ILJ�=�>�N�=�hàE�<�=�h�AM��=LJ�=�cUI�=�@p=LEG{�=�=Lcs=�>NKF>c�h^h�A���I�WUBDE4E�JKW�=`SUJ�H#@�BD=�R�N�k�; <�=`dw>I�E4E�<�>�EQE�<U=`=���=LILE?Hd�E�<U=`NK=�I�Hc�h�>J:F�E�>N�f�HcE�JKW�=bS�JKH#@�BD=�R�N�{0>N0>BCNKH`H#@UN�=�J:P#=Lh�ACcOE�<�=?S�<�H#c�HBCH#i#ADI�>BUH�P=�JKBCHj>hTI�H#cUh�ADE�ACH#c�N�ILH#W�BCh@+=t>I�ILH#W�cjE�=Lh�d�H#J$@jF�>�N�N�WURTADc�i^E�<�>�E$E�<�=TS�<�H#c�HBCH#i#ADI�>BnS�>�E�<j{0>�F�ADNu>�S�J�AMP!ADBC=Li#=�hJ�H#W!E�=uE�HTE�<U=uE�JKW�=�S�JKH#@�BC=LRTNQACc^RT=LRTHJKF#�p=�NKS+=LI�AC>BCBMF�@+=LI�>W�NK=�N�W�@%|K=�ILE�N�BC=�>J�c�E�J�W�=>J�AME�<�R�=LE�ACIbdw>�ILE�N4@jF�R�=�>cUNQH�dnH#J�>BeJK=�Sp=LE�AME�ADH#c�N�kÉ!k Ü k4�b©�¤l �­($�¡� w¤w¬T¦�£ � #V¥�©��%¤D£�� $�¡ $�¥�© ��©�¡�ª�¥(«�©�¬�¡�ª�����«� K«©�¡T¤D£ !}¡Xª� �¤ �%¦U �¤�¥�£�ª�®v; <U=S�J�=LN�=Lc%E0h�>�E�>`>JK=4I�BC=�>J�J�=Lij>J�hUACc�i6E�<�=4ADc%PH#BDP=�R�=�cjE�Hd�{�H#J�f%ADc�i`R�=�R�H#J:F�J�=LN�H#WUJ�I�=LNACc�E�<�=�IL=�cjE�J�>Bn=��U=LI�WUE�ADP=�NKF(NKE�=�R {4AME�<�@pHE�<�E�JKW�=�>c�h^dw>BCNK=uS�JKH#@�BC=LRTNLk��QH�{�=LP=�JL�I�H#cUI�=�JKc�ACcUiOE�<�=8JKH#BC=?Hd�E�<�=�S�<UH#c�H#BDH#i#ACI�>B§NKF(NKE�=�R ��ACcYS�>JKE�ACI�WUB�>J�ACctP=�J�AMd²F(ACc�i�dw>BDN�=S�J�H@�BC=LRTN����#E�<U=Q=�P(ACh�=Lc�I�= d�H#J�{�H#J�f%ADc�i`R�=�R�H#J:FuJK=�N�HW�J�IL=�NqACN�{�=�>f�=�J�k �E�ADNVS+H#NKN�AD@�BC=E�<�>�EuE�<UACN�ADNu>�E�J�W�=�dw>ILE�ÊqE�<�>�E�ADN���SU<�H#c�H#BDH#i#ADI�>B�{�H#J�f%ADc�iàRT=LRTHJKFyJ�=LN�H#WUJ�I�=LNO>J�=J�=Lg(WUACJ�=Lh�E�H^P#=�JKADd²FxH#c�BMFàE�JKW�=tS�JKH#@�BD=�R�Nu>cUh-c�HE$dw>BCNK=TSUJ�H#@�BD=�R�N���k�; <�ADNuACN`>c-¦&�©�¤�¥�©�¤�SpH#N�NKAC@�ADBCAMEGF�i#ADP=�c�E�<�>�Eb@�>N�ADIu>�J�ADE�<�R�=LE�ADI�dw>ILE�N��wA�kß=�kD�+I�H#JKJ�=LILE8SUJ�H#@�BD=�R�NX�4>J�=��J�N:EvBD=�>JKc�=�hY@jF�R�=�>c�N�HdrH#J�>B§J�=LS+=�E�ADE�ACH#cUN�k �QH}{0=�P#=�JL��ADEqACN0>BCNKH`SpH#NKN�AC@UBC=4E�<�>�E�H#W�J=��!Sp=�J�ADRT=LcjEX>B�RT>c�ACSUW�B�>�E�ACH#cY{0>N?c�HEQNKE�J�H#c�iT=�c�HW�i#<�E�HTh�=�E�=LILE�>�S+HN�N�AD@�BC=6=���=LILE�kGc�h�=L=�he�4E�<�=^N�W�@%|K=�ILE�Sp=�J:d�H#J�R�=�h E�<�=^I�H#c�ILW�J�JK=�cjE�EX>�N�f�>�EtE�<�=�J�>�E�=^Hd�H#c�=�ADE�=LR=LP=�JKF Ü N�=�I�k`; <UACN8J�>�E�=u{0>N�<�ADi#<à=�cUH#W�i#<�E�H�Rt>f�=uE�<U=�J�>c�hUH#RO~�i#=�cU=�J�>�E�ACHc^EX>�N�fh�=�RT>c�hUACc�i�k �?H}{�=LP=�J��+ADE4RT>�F�c�HE?<�>�P#=$H}P#=�JKBCHj>�h�=�h�E�<�=$S�<�H#cUH#BCH#iACI�>�B�NKF(N:E�=�R E�H>�iJ�=�>�E4=�c�H#WUi#<^=��(E�=�cjE�kmbc�H�E�<�=LJ�S+H#NKN�AD@�ACBDADEGFyACN`E�<�>�EuE�<�=LJ�=Y{0>N�N�H#R�=tE�J�>h�=�~GH��@+=�EG{0=L=�c�E�<�=�SUJ�ACRT>J:F

>c�hàNK=�I�Hc�h�>J:F^E�>N�f%N�k$Ñ(W�IX<y>TE�J�>h�=�~GH�s@+=�EG{0=L=�càEX>�N�f�S+=LJKd�H#JKRt>cUI�=u<�>N�>BDJ�=�>�hUF@+=L=�c�JK=�SpH#JKE�=�h^ACc�E�<�=`BCAME�=�J�>�E�WUJ�=k���H#J4=��U>R�S�BC=���mbNK<�I�J�>�d²Eb=�E8>�Blk�� �}È#ÈjÜ �0H#@�N�=LJKP=�hE�<�>�EbNKW�@(|K=�I�E�N8<�>h�h�A ��I�W�BME�AC=LN4Rt>ADcjEX>ADc�ACc�i�E�<�=$J�>�E�=`HdnH}P#=�J:EbP=�J�@�>BCAD��>�E�ACH#c�NQ>cUhN�BDH�{�=�h�h�H}{4c�{4<�=�c E�<�=�F <�>h E�H�i#=Lc�=�J�>�E�=�{0H#JKh�NtHJTJ�>c�h�H#R NK=�JKAC=�NTHd8BD=LEKE�=�JKN��>N6>�N�=LI�H#c�h�>JKFàE�>N�f§k GcàE�<U=�S�J�=LN�=�cjE`=��!Sp=�J�ADRT=LcjE�N��r{�=�E�J�AD=�h�E�H�ILH#cjE�JKH#Bnd�H#J8E�<�ACNS+HN�N�AD@�ACBDADEGFà@jFsE�J�>�ACc�ADc�i^HW�JuNKW�@(|K=�I�E�N�E�H�S�J�H(h�W�IL=YH#c�=tADE�=LR =LP=�JKF Ü N�=LI�>c�h-@jFJ�W�cUc�ACc�isE�<�=^=��!S+=LJ�ADRT=Lc%EtH#c�BMF�{4<�=�cÓE�<�=LF�{0=LJ�=à>�@�BC=�E�H�hUH-N�H�k �?H}{�=LP=�J��QE�<�=� W�����l���'���J����H b�H ���U �� � ��� ���'�i�|V���UXP6�l������ ����Q�U��Rx�hfZI^�l�5���O��|�TO'�������HVe�'�����b�b�� ���hO'�h��c

���� �����Ve�Z���'�����R��f?�i������U!���h5U'����V���O'�5Ve�h�9R��h��L��/����������R%� F Y*�'V��l�� � ��� �f�In�'��V��lO'�������HVe�'�����^L*��U'��f/���N����U!�����U'���D���� N5���Ve�� ����hf���U*R��������J��U*v�5�hv5���T�hUx�����h����m�e����V���V����H� U�� P}� �5������� � N���jIn�h�����U�Qv!����I �f IK5��L*��Uq;�m���m5��Ru�� p�Q ��hUq5�h���'�� ���P���j���� �����Ve� ���'�i� O��iv!�H���� |P}���� 9�������q��T��U'�O���Ve�� � ��hU'q fg�U6V �����U6 F

Page 24: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

+,- ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

S+HN�N�AD@�ACBDADEGF^E�<�>�E`N�WU@(|K=�I�E�N�NKBCH}{0=Lh�E�<U=�ACJ6J�>�E�=�Hd0P=�JK@�>BCADN�>�E�ACH#c��ÖACcàS�>JKE�ACI�WUB�>JL�zHcE�<�=�R�H#NKETh�A���ILW�BDE�S�JKH#@�BC=LRTN��ÖJK=�RT>ACc�NLk���WUE�<�=�JOADc%P=�N:E�ACi#>�E�ADH#c�NOc�=�=Lh�E�HsI�BC>J�AMd²FE�<�ADN`SpH#ADc%E�kTm?Nu>�h�=�NKACJ�>@�BC=�d�=�>�E�W�JK=��E�<�=LN�=TACcjP#=LNKE�ADij>�E�ACH#c�N�{4ADBCB�c�H�EuH#cUBDFà<�>�P=TE�HE�J:F�E�H�ILH#cjE�J�HBbd�H#JtE�<�=àRt>�ACcjE�=Lc�>c�IL=àHd$J�=�<U=�>JKN�>B�J�>�E�=��?@�W!E�{4ACBCBb>BCNKH-<�>�P#=yE�H<�>�P#=8R�=�>�N�W�JK=�NvHdeN�=�ILH#c�h�>�JKFj~�E�>N�f�S+=LJKd�H#JKRt>�c�I�=��w=kÇi�kM�!J�>�E�=?HdrJK=�N�SpH#c�hUACc�i��(h�=Li#J�=L=HdVJ�>c�h�H#R�c�=LN�NX��kQÑ!W�IX<�R�=�>�N�W�JK=�NbH�d�N�=LI�H#cUh�>JKF�E�>N�f%NbSp=�J:d�H#J�RT>c�IL=`<�>}P=u@p=�ILH#RT=@+=L=�c�R�H#J�=�>c�huRTH#JK=0ILH#RTR�H#ce��>NzE�<�=�F�>BDBCH}{-E�<�=0ADc%P=�N:E�ACi#>�E�ADH#cuHd�S+H#NKN�AD@�BC=qE�J�>�h�=�~H�à=���=LILE�NQ@p=LEG{�=�=�c�S�J�ADRt>J:FY>�c�h^NK=�ILH#c�h�>J:F�EX>NKfYSp=�JKd�HJ�RT>c�I�=�k; <�=�S+HE�=�cjE�AC>BVACcUN�ACi<%E�N6ij>ACcU=�hx@%FyWUN�ACcUi�R�H#J�=�JK=�>BDACNKE�ACIO>JKADE�<�RT=�E�ADIuEX>NKf%NuBCADf=

S�J�H(h�W�I�E�ADH#c�EX>NKf(N?>Nv{�=�BDB�>N4@%FtE�<�=6I�HBCBC=LILE�ACH#cYH�dnNK=�S�>J�>�E�=6NKACc�i#BD=�~q>�c�h^hUW�>BM~lEX>NKfS+=LJKd�H#JKRt>�c�I�=vR�=�>�N�W�JK=�N�I�>cO@p=vACBDBCW�N:E�J�>�E�=Lh�@jF�>�NKE�W�hUF�JK=�IL=�cjE�BMF�J�=LS+H#J:E�=Lh�@jF���Hi#AC==LEQ>B�k4� ��È#È ]%��k�; <�=LFY>BCNKH�W�NK=�h�E�<�=8hUW�>BM~lEX>NKfTS�>J�>hUACi#R×E�H�ADcjP#=�N:E�ADij>�E�=?E�<�=�SpH#N�NKAM~@�ACBDADEGF6E�<�>�E�RT=LcjEX>B�>�J�ADE�<�R�=LE�ADI0JK=�g%W�ACJK=�NV{�H#J�f%ACcUi$R�=�R�H#J:FuJK=�N�HW�J�IL=�N�k�; <�=�F�W�NK=�hT>I�>BDI�W�BC>�E�ADH#c�EX>NKf6ACc6{4<�ACIX<�NKW�@(|K=LILE�Nn<�>h`E�H8>hUh�>QNK=�JKAC=�N\Hd�EG{�H�~GhUACi#AME�c(WUR�@+=LJ�NzE�<�>�E{0=LJ�=$>W�hUADE�HJ�ACBMF�H#J0P(ACNKW�>BCBMF�S�J�=LN�=�cjE�=�hek�; <�=�N�=LI�H#c�h�>JKFYE�>N�f%N {�=�J�=$>ADRT=Lh�>�E h�ADN:~J�W�S!E�ACcUiu=�>�IX<tI�HRTSpH#c�=Lc%E�HdeE�<�=4{0H#JKf%ACc�i`RT=LRTH#J:F�NKF(N:E�=�R���>�N�ILH#c�I�=LADP=�h�@jFTÒv>h!~h�=�BD=LF��wA�kß=�kD��E�<�=`SU<�H#c�H#BDH#i#ADI�>BeBDH!HSe��E�<�=$I�=LcjE�J�>�B\=��U=LI�WUE�ADP=�+E�<�=`P(ADN�W�>B�NKf=LE�IX<�S�>h��>c�h�E�<�=YNKS�>�E�AC>B�NKF(NKE�=�R�NX��k GcjE�=�JK=�N:E�ACcUi#BDF��J�=LN�W�BME�NuNK<�H}{0=Lh�E�<�>�E�ä�� � �6I�>BDI�W�BC>�E�ADH#cS+=LJKd�H#JKRt>�c�I�= {0>N�hUACN�JKW�SUE�=�hO{4<�=�ctE�<�=4I�=Lc%E�J�>B§=��U=LI�WUE�ADP=bNKF(N:E�=�R×{0>NqH�P=�JKBCHj>hU=�he�>c�he�VE�Hs>�BD=�NKN�=�JO=��!E�=�cjE���{4<�=Lc�E�<�=�S�<�H#cUH#BCH#iACI�>�B�BDH!H#S�NKF(NKE�=�R {0>NOH�P=�JKBCHj>hU=�heÊ� Ü �6E�<�=LACJuNKW�@(|K=LILE�N�RT>h�=Y>S�S�JKH}�!ADRt>�E�=�BMFàE�<�=YN�>R�=Yc%W�R�@p=�J�Hd4=LJ�JKH#J�N�ADc-N�ADc�i#BD=�~>c�h�hUW�>BM~lEX>NKf�I�H#cUh�ADE�ACH#c�NL�+@UWUEbE�<�=u=LJ�J�HJ�NbADc^E�<�=uh�W�>BM~lEX>NKf�I�H#c�hUADE�ADH#c^E�=�c�hU=�h�E�H@+=`I�BDH#N�=$E�HtE�<�=uILH#J�JK=�ILE�>c�NK{�=�JLk8; <�=LN�=�S�>�EKE�=LJ�c�N?Hd�J�=LN�W�BME�Nb=Lc�>@�BD=�hà�rH#iAC=$=LE�>�BlkE�HxN�W�ii#=�N:EtE�<�>�E�� � �uE�<U=^JKH#BC=�Hd?E�<�=�S�<�Hc�H#BCHi#ACI�>BvBCH(H#S�ADN�R�H#N:ETBDACf�=�BDF�E�Hxf=�=LSE�J�>IXfàHdvJKW�c�c�ADc�i�E�HE�>BCN6>�c�hxE�H^RT>ADc%E�>ACcy>�I�I�WUJ�>I�FyACcyI�>BDI�W�BC>�E�ADH#ce�r>�c�hÓ� Ü �bE�<�=J�H#BD=bHd�E�<�=8I�=LcjE�J�>�Be=��!=�ILWUE�AMP#=6ACN�E�H�=LNKE�ADRt>�E�=bE�<�=8I�HJ�J�=LILE E�HEX>BDNv>cUhYE�H�N�=LBC=LILE4>cUhACR�S�BC=LRT=LcjE$E�<�=�>SUS�J�H#SUJ�A�>�E�=�<�=�W�JKACN:E�ACILN`{4<�=Lc-E�<�=TN�H#BDWUE�ADH#csE�H�>�SUJ�H#@�BD=�R ACN$c�HEh�ACJK=�I�E�BDFY>�P>�ACB�>�@�BC=QE�<�JKH#W�i#<�J�=�E�J�AD=LP�>B�k�rH#i#AC=t>c�h�ILH�~�{�H#J�f�=�JKN��4� �}È#È ]%�6NKE�W�hUF-<�>N�ACcjE�=LJ�=LNKE�ADc�i�ADRTS�BDACI�>�E�ADH#c�N�J�=Lij>JKh�ACc�i

E�<�=`S�J�=LN�=Lc%EbNKE�W�hUF�>NQ{�=�BDBz>NbSpHE�=LcjE�A�>�Bed�WUE�W�JK=`ADcjP#=�N:E�ADij>�E�ADH#c�NLk Gc�E�<U=`ILH#cjE�=��(E�H�d�rH#i#AC=t>c�h�I�H�~�{�H#J�f�=�J�NL�nP(AC=�{ Hd E�<�=�J�=LN�Sp=�I�E�ADP=�J�H#BD=�NuH�dQ{�H#JKf(ADc�iàR�=�R�H#JKFxI�HRO~S+Hc�=�cjE�N�ACc >JKADE�<URT=�E�ACI���E�<�=�S�JK=�N�=LcjEYh�>�E�>àN�W�i#i=�NKE�E�<�>�EOP#=�JKA%��I�>�E�ADH#c�S�>J�>�h�ACi#R�NJ�=Lg(WUACJ�=QP#=LJKF�BCAME�E�BD=vH#c!~�BCADc�= Rt>�ACcjE�=Lc�>c�IL=?HdeJ�W�c�cUACc�i6E�HE�>BCNLkVÆ8c�=?S+HE�=�cjE�AC>B�J�=�>N�HcACN0E�<�>�E E�<�=�S�J�H@�BC=LRTNvWUN�=�h�<�=LJ�=6<�>�P#=$>BDBl�(>�E4H#cU=�S+H#ADcjEvH#J >�c�HE�<U=�J��U@+=L=�c�NKE�WUh�AC=LhACc�hUADP(ACh�W�>BCBMF�>c�h�I�>c�@p=�N�H#BMP#=�h�P(A�>�>�N�ADc�i#BD=�~GN:E�=LS�RT=LRTH#J:FtJK=LE�J�AC=�P�>BeR�=�IX<�>cUACN�R��Rt>�f(ADc�i-JK=�h�W�cUh�>cjE�E�<�=àH#c(~GBCADc�=�Rt>ADcjE�=�c�>c�I�=àH�d`JKW�c�c�ADc�i-E�H�EX>BDN�k GcÓE�<�ADN�S+=LJ:~N�Sp=�I�E�ADP=�qE�<�ADNuP#=LJ�A%��I�>�E�ACH#c�S�>J�>h�ADi#R ACN�=��!Sp=�I�E�=�h�E�HàNK<�H}{ BCAME�E�BC=�ADdQc�Hy=L�+=�I�ETH�dI�H#cUI�W�JKJ�=�cjEt>JKE�ACILW�B�>�E�H#JKFsN�WUS�S�J�=LN�NKACH#ce�q{4<�ACIX< ACN�{4<�>�E�{v>NOd�H#W�cUh�<U=�J�=�d�H#J�dw>BDN�=>J�AME�<�R�=LE�ACI�S�J�H@�BC=LR P=�J�A���I�>�E�ACHceky��H#J`E�<�=�NK=Ydw>BCNK=YS�J�H@�BC=LRTNL��<�H}{0=�P#=LJ��0@p=�I�>W�NK=

Page 25: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � +,:

N�W�@%|K=�ILE�Nb<�>�P=`E�H�J�=�E�JKAC=LP=6I�H#JKJ�=�I�E8>�c�NK{�=�JKN��pI�H#R�S�>JK=6E�<�=�NK=`JK=LE�J�AC=�P#=Lh�I�HJ�J�=LILEb>c!~NK{�=�JKN�{4ADE�<`E�<�=�S�J�H#SpH#NK=�h�>cUNK{�=�J�NL�(>c�h�N:EX>�E�=�E�<U=�ACJzJ�=LN�SpH#c�NK=�jADE\ACNzW�c�hU=�J�N:EX>cUh�>@�BD=E�<�>�E�I�Hc�I�W�JKJ�=Lc%E�J�>c�hUH#R BC=LEKE�=LJui#=Lc�=�J�>�E�ADH#c�NK<�H}{0=Lh�E�<�=tiJ�=�>�E�=�N:E�h�ADN�JKW�SUE�ADH#c�HcN�W�@%|K=�ILE�N��pS+=LJKd�H#JKRt>�c�I�=�kÆ8c�=�ACR�S+H#J:EX>cjErADRTSUBCACI�>�E�ADH#cbH�d��rH#i#AD=�>c�h$I�H�~l{0HJ�f=LJ�NL��NKW�i#i#=LNKE�ADH#c$J�=�i#>J�h�ADc�i E�<�=

J�H#BD=�Hd�=�>IX<x{0H#JKf%ACc�i�RT=LRTHJKF�ILH#R�S+H#cU=�cjE$ACcx>J�AME�<�R�=LE�ACI`I�H#c�IL=�JKc�N`E�<�=OS+H#NKN�AD@�BC=h�AD�+=�JK=�cjEQACcjP#HBDP#=LRT=LcjE?H�d\{�H#J�f%ADc�iTR�=�R�H#J:FYJ�=LN�H#WUJ�I�=LN?ADc�E�<�=�P#=LJ�A���I�>�E�ACH#c�Hd\I�BDH#N�=dw>BCNK=�S�J�H#@UBC=�R�N^�w=�kßi�kM� Z�[Ô] _ �}â ��I�HRTS�>�J�=�h�{4ADE�<�E�<�=�P=�JKA%��I�>�E�ADH#c H�d8h�ADNKEX>�c%EI�BDH#N�=�S�JKH#@�BD=�R�N��w=kÇi�kM�zZ�[Ó]�_ ��Ï ��k'�E6ACN8EGF(S�ACI�>BCBMF�H@�N�=LJKP#=LhsE�<�>�E6N�WU@(|K=�I�E�N6EX>f�=N�ADi#c�A%��I�>cjE�BMFtR�H#JK=?E�ADRT=QE�H�P=�J�AMd²FYILBCH#NK=8J�=LN�W�BME�NvE�<�>c�h�ACN:EX>cjE4H#cU=�N���>c�=L�+=�I�E E�<�>�E<�>NQ@+=L=�c�E�=�JKRT=Lh�E�<�=�KN�SUBCADE4=���=LILE �à�w=�kßiUkD��m?N�<�ILJ�>�d²EbÌÛÒv>�EKEX>iBCA�>!� �}È#Ï ZUÊ ,8=�<�>=�c�=ÌÛÚ0H#<U=�ce� �}ÈÈU� Ê���@UJ�H(h�H�àÌ �rH#ij>ce� �}È#È Ýj��k�; <�ADN =L�+=�ILEQADNvACcjE�=LJ�=LNKE�ADc�iO@+=LI�>WUN�=6ADEN�W�ii#=�N:E�NvE�<�>�E0NKW�@(|K=LILE�N WUN�=bEG{�H�h�AD�+=�JK=�cjE0EGF(Sp=�NvH�drNKE�J�>�E�=�iF �Ø>`J�=LE�J�AD=LP�>BpNKE�J�>�E�=LiFW�N�=Lh`E�H4P=�JKADd²F8ILBCH#NK=�S�J�H(h�W�I�E�Nz>c�h6S�BC>W�N�AD@�ACBDADEGFQNKE�J�>�E�=�iFbE�H P#=LJ�ADd²Fbh�ACN:EX>cjEzS�JKH!h�WUILE�N���r=�RT>ADJ�=OÌ �§>�F#H#B�� �}È#È É#��k �?N�ADc�i�E�<�=�J�=�E�J�AD=LP�>B�N:E�J�>�E�=LiF#�\N�W�@(|K=LILE�N���JKNKE`J�=LE�J�AD=LP#=E�<�=�ILH#J�JK=�I�ETNKH#BCW!E�ACHce��I�HRTS�>�J�=tE�<�=�J�=LE�J�AD=LP#=Lh�I�H#JKJ�=�I�EON�H#BDWUE�ADH#ce��>cUh�N:EX>�E�=YE�<�=LACJJ�=LN�SpH#c�N�=�k �QN�ADc�i�E�<�=6S�BC>W�N�AD@�ACBDADEGFON:E�J�>�E�=�i�F#��E�<U=6{4<UH#BC=8P=�J�A���I�>�E�ACHc�SUJ�H(I�=�NKN4ACN c�HEJ�W�cYE�HuILH#RTSUBC=LE�ACH#c��(@UWUE0{�H#W�BDhY@+=bN�<�H#J:EK~�I�ACJKI�W�AME�=Lht@jFY> :dw>NKE:~Gc�H �uh�=LI�ACNKACH#c��!i#AMP#=LcE�<�>�E\E�<�=�SUJ�H#SpH#N�=Lh�>c�N:{0=LJnADNzE�H!HQJ�=LRTHE�=qd�JKH#RÔE�<�=0ILH#J�JK=�ILEn>c�N:{0=LJnE�HQ@p=0S�BC>W�N�AD@�BC=�k�E8{�H#W�BChà@p=�ADc%E�=�JK=�NKE�ACc�iTE�HYh�=�E�=LJ�R�ACc�=u{4<U=LE�<U=�J8E�<U=�N�=�EG{�H�f%ACc�hUN�Hd�NKE�J�>�E�=�iF�>J�=ACR�S�>ADJ�=�h�@%F�H}P#=�JKBCHj>�h�ACc�i-E�<�=àN�>�RT=�{�H#JKf(ADc�i�RT=LRTHJKF�I�H#R�SpH#c�=�cjE�>cUhÖE�H-E�<�=N�>R�=6=��(E�=LcjEbADc^>�h�W�>BM~lEX>NKftN�AME�W�>�E�ACHcekmbNQ> ��c�>B�S+H#ADcjE��UE�<�=6h�>�EX>�JK=�SpH#JKE�=�h�ACc�E�<U=�S�J�=LN�=�cjE?S�>Sp=�J4<�>�P#=�d�W�J:E�<�=LJ4ACR�S�BCA ~

I�>�E�ACH#cUN8d�H#JbE�<U=�h�H#RT>ACc�H�d�ILH#i#c�AME�AMP#=�>JKADE�<�RT=�E�ADIäQ; <�=LFàSUJ�H}P(ACh�=O>cyADRTSp=LE�W�Nbd�H#Jd�H#J�RT>BzRTH(h�=LBCNbH�d�NKACR�S�BC=`>JKADE�<URT=�E�ACI6E�H�>�I�I�HW�cjE�d�H#JbE�<U=�ACcjP#HBDP#=LRT=LcjE6Hd�RT=LcjEX>BJ�=LN�H#W�JKI�=LNO>�EuhUAD�+=�J�=LcjEuSpH#ACcjE�N`ADcsE�<U=tI�HW�J�NK=tHd NKACR�S�BC=�>JKADE�<�RT=�E�ADI�S�J�H#@UBC=�R P=�J:~A%��I�>�E�ADH#cek^; <(WUN�dw>J���cUH#c�=YHd E�<�=�NK=�RTH(h�=LBCNuRT>f�=�N�>cjFsI�H#R�R�ADE�R�=�cjE$J�=Lij>JKh�ACc�iE�<�=`J�H#BD=6Hd�R�=�cjEX>�BzJK=�NKH#W�J�IL=�N8ADc^NKACR�S�BC=6>�J�ADE�<�R�=LE�ADIk Gc�h�=�=Lhe�+E�<�=$RTH(h�=�BDNQ>N�NKW�RT=E�<�>�E4I�H#i#cUADE�AMP#=�>�J�ADE�<�R�=LE�ADI?ADcjP#H#BMP#=�NQ>W!E�H#RT>�E�ADI?SUJ�H(I�=�NKN�=LNQE�<�>�E ILH#c�N�WURT=�P#=LJKFYd�=�{{0HJ�f%ACc�i�R�=�R�H#JKF�JK=�N�HW�J�IL=�N$ADdq>cjFà>�E6>BCB�k6Ò0=�I�>W�NK=�H�d�HW�J�N�W�@%|K=�ILE�N��r<�ADi#<àN�Sp=�=Lh>c�hT>I�ILW�J�>�ILF#�!ADEV{0>Nqh�A���I�WUBDEVE�H$N�<UH�{�E�<�>�EqNKACR�S�BC=vILH#i#c�AME�AMP#=4>JKADE�<URT=�E�ACI0ACcjP#H#BMP#=LNN�H#R�=�RT=LcjEX>B JK=�N�HW�J�IL=�NtADc�E�<�=�{0HJ�f%ACc�ixR�=�R�H#JKF�NKF(NKE�=�R�k�; <�=�h�W�>B ~�E�>N�f-S�>J:~>h�ADi#R <�H}{�=LP#=LJu<�>�N`@p=�=Lcsd�J�WUADE�d�WUBVACcyN�<�H}{4ADc�i^E�<�>�E6P#=LJ�ADd²F(ADc�i^NKACR�S�BC=�>J�AME�<�R�=LE�ACIS�J�H@�BC=LRTN$J�=Lg(WUACJ�=LNu>�E�E�=LcjE�ACHc�>B�J�=LN�H#W�JKI�=LN�k�; <�=tJK=�NKW�BDE�NuS�JK=�N�=LcjE�=�h�ADcxE�<�ACN$S�>Sp=�J>J�=^I�H#cUN�ACN:E�=Lc%Et{4ADE�< E�<�H#NK=�N�<UH�{4ADc�i�E�<�>�EYILH#i#c�AME�AMP#=^>J�AME�<�R�=LE�ACI�I�H#WUBChÓ@p=�ADcU��W!~=�c�IL=�h^@%F�NKH#R�=�I�=�cjE�J�>BrR�=�IX<�>�c�ACNKR �w=�kßi�kM��mbNK<�I�J�>�d²EQ=LE?>B�kD� �}È#ÈjÜ Ê�Ò0J�>ADc�=�JKhe� �}È Z â Ê�?AME�IX<e� �}ÈjÏ Zà>x>c�h�@eÊ4á6>�F#=�� �}È Z��!Ê á6>}F=�=LET>BlkM� �}È Z â Ê �}È Z È �uH#J�ACcjP#HBDP#=�NKH#RT=S�>J:E�A�>�BCBDFT>W!E�H#c�HRTH#WUN S�J�H(I�=LN�N�=LN��w��=LRt>�ACJ�=b=LE?>BlkM� �}ÈÈU� Ê �}ÈÈ ]�Ê��r=�RT>ADJ�=�ÌÛ�§>�F#HBl��}È#È É(Ê���@�JKH!h�H���Ì �rH#ij>c�� �}È Z��j��k �Evd�W�JKE�<�=�J�N�W�ii#=�N:E�NvE�<�>�E N�HRT=?HdrE�<�=bS�J�H(I�=LN�N�=LN

Page 26: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

+,2 ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

ACcjP#HBDP#=LhÔADcØE�<�=xP=�JKA%��I�>�E�ADH#cØE�>N�f RT>�F J�=Lg%W�ACJK=xhUAD�+=�J�=LcjE�>R�H#W�cjE�N�H�du{�H#J�f%ACcUiRT=LRTHJKFTJ�=�NKH#W�JKI�=�N?>c�h�E�<(WUN Rt>�FY<�>}P=6J�=�>�IX<�=�h�h�AD�+=�JK=�cjE4BC=�P#=LBCN Hd\>WUE�H#RT>�E�ADI�ADEGFk��J�H#R >Yh�=LP=�BCHS�RT=LcjEX>BVSp=�JKN�Sp=�ILE�ADP=�zJ�=�NK=�>JKIX<�ADcàN�ACR�S�BD=�I�H#ic�ADE�ADP#=�>J�AME�<�R�=LE�ACI

��>cUh�ACc�RT>cjF�HE�<U=�JbhUH#Rt>�ACc�N��4=LNKEX>�@�BCADN�<�=Lh�E�<�>�E8Sp=�JKd�HJ�RT>c�I�=`>�E8>cjF�S�>�JKE�ADI�W�BC>J>i#=QACNqI�H#R�R�H#c�BDF�>`R�AM�(E�W�JK=?H�deS�JKH!IL=�N�NKACc�iuNKE�J�>�E�=Li#AC=LN8��=kÇi�kM�UmbNK<�I�J�>�d²E ÌÕ�\AC=�JKRt>�ce��}È Z Ü Êná�H#NK<�RTADh�=�J8Ì mbNK<�I�J�>�d²E�� �}È#ÈU� Ê\�r=LRt>ADJ�=�=�E`>BlkM� �}È#È ]UÊ\�r=LRt>ADJ�=OÌ Ñ!AC=Li#BC=LJ���}È#È É(Ê#Ñ!AD=�i#BD=�JL� �}È Z Ï � �}È Z#Z#>UÊ�Ñ!AD=�i#BD=�J�ÌÓÑ(<�ACS�BD=LF� ��È#È É#��kz; <U=qhU=LP#=LBCH#SURT=Lc%EzHd!N�ADRTSUBC=>J�AME�<�R�=LE�ACI�<�>�N?@p=�=Lc�IX<�>J�>ILE�=�JKAC��=Lh�@jF�E�<U=$dw>I�E?E�<�>�E4F#HW�c�i#=LJ?IX<�ADBCh�JK=�c^>J�=$R�H#J�=J�=LBCA�>�c%E4Hc^NKBCH}{0=LJ4ACR�S�BCADI�ADE�I�HW�cjE�ACcUiTN:E�J�>�E�=�iAC=�NL�§>c�h�{4ADE�<^h�=�P#=LBCH#S�R�=�cjE��pIX<UACBChUJ�=�cJ�=�E�J�AD=LP=0> h�=LI�B�>�J�>�E�ADP#=VJK=�S�JK=�NK=�cjEX>�E�ACH#c`Hd!c(WURT=LJ�ACI�>Bdw>I�E�Nrd�J�HRÎRT=LRTHJKFO��mbNK<�I�J�>�d²E���}È Z Ü � �}È Z â � ��È Z Ï � �}È#ÈjÜ Ê�mbNK<�I�J�>�d²EVÌÖ�nAD=�J�RT>ce� �}È Z Ü Ê%Úv>R�S�@p=�BDB!ÌÖÍ�J�>�<�>R�� �}È ZjÉ!ÊÚ0H!Hc�=LF�6�z>�h�he�8Ì Ñ({v>�c�N�H#c�� �}È Z#ZUÊuÑ!AD=�i#BD=�J�� �}È ZZ#>UÊuÑ!AC=Li#BC=LJ�Ì Ñ!<�J�>i#=LJ�� �}È Z]�ÊÑ(P#=Lc�N�HcÕÌ Ñ}|KH#@p=�JKi�� ��È Z â ��k×; <�=sNK<�ADd²E�d�JKH#R ILH#W�cjE�ADc�i N:E�J�>�E�=Li#AC=LN�E�H�RT=LRTH#J:FJ�=�E�J�AD=LP�>BpACNvhU=LE�=LJ�R�ACc�=LhY@jFtE�<�=8NKE�J�=Lc�iE�<�H�drdw>ILE JK=�S�JK=�NK=�cjEX>�E�ACH#c�ADcYR�=�R�H#JKF��w=�kßiUkD�Í6=�>JKF�Ì×Ò�W�J�BDACc�i#<�>RO~ ,8W�@�JK=�=� ��È Z È Ê+Ñ!AD=�i#BD=�J�� ��È Z Ï Êp�r=�RT>ACJK=6=LEb>BlkM� �}È#ÈU� Ê �}ÈÈ ]�Ê�r=�RT>ACJK=tÌ Ñ!AD=�i#BD=�J�� �}È#È É(ÊqÑ!AC=Li#BC=LJuÌ Ù=�cUf(ADc�N�� ��È Z È ÊqÑ!AD=�i#BD=�J`Ì Ñ!<�J�>�i#=�JL� �}È Z]j��k; <�>�E0ACN��%dw>I�E�NvN:E�H#JK=�ht{4AME�<Y<�ADi#<Y>�N�N�H(I�AC>�E�AMP#=QNKE�J�=�cUiE�<�Nv>J�=?J�H#WUE�ACc�=LBDF�!J�>S�AChUBDFO>cUh>I�ILW�J�>�E�=�BMFtJK=LE�J�AC=�P#=Lh�d�JKH#R�RT=LRTHJKF#kn; <�H#N�=?{4ADE�<�BDH}{0=LJv>NKN�H(I�A�>�E�ADP=bN:E�J�=Lc�iE�<�N4>J�=RTHJ�=QS�J�H#cU=QE�HuN�HBCWUE�ACH#c�P(A�>$I�H#W�cjE�ACc�i�kn; <�=bS�JK=�NK=�cjE NKE�W�hUF�N�WUi#i#=�N:E�NqE�<�>�Eq{�H#J�f%ACcUiRT=LRTHJKFYJK=�NKH#W�J�IL=�NQI�H#WUBCh^>BCNKH�@+=$>c�ACR�S+HJKEX>�c%E0I�H#cjE�J�AC@UWUE�H#J E�HOE�<�=$>IX<�AD=LP#=LRT=LcjE>c�h�h�=LPH#BCSURT=Lc%EQHd\c%W�R�=�J�ADI�>BrILH#i#c�AME�ADH#cy�wNK=�=`Ò0J�>�ACc�=LJ�he� ��È Z â ʧÍ�=�>�JKF#�§Ò�J�H}{4ce�§ÌÑU>RT>J�>�c�>�Fj>f�=� ��È#ÈU� Ê(á6>�F#=� �}È Z �U�jd�H#Jq>`N�ADRTADB�>J�>J�i#WURT=Lc%EX��k GcYS�>J:E�ACILW�B�>�J��E�<�=�JK=Rt>�F�@p=�>TiJ�=�>�E�=�J?ACcjP#HBDP#=LRT=LcjE8Hd�{�H#JKf(ADc�itR�=�R�H#J:F�J�=�NKH#W�JKI�=�N�Hc�R�H#J�=$h�A���ILW�BDEADE�=�R�N\d�H#J\IX<�ACBDh�J�=Lce�#>cUh�E�<�ADNni#JK=�>�E�=�JnADcjP#H#BMP#=�R�=�cjEVH�d�{0H#JKf%ACc�i8R�=�R�H#J:F`Hc�h�A���ILW�BDEADE�=�R�NVRTADi#<jEVIX<�>c�i=4{4AME�<�>i#=��(>6SUJ�=�hUACILE�ACH#c�E�<�>�E�J�=LRt>�ACc�N�E�H$@p=vE�=LNKE�=�hà��ACcON�ADRTSUBC=>J�AME�<�R�=LE�ACI��U@�WUEQADc�H�E�<�=LJ h�H#RT>ACc�N4>�Nv{0=LBCB²��k

��*���20.87��:5���9¢20.GcjE�=�JK=�N:E�ACcUi#BDF��E�<U=^S�JK=�NK=�cjEYh�>�EX>sJK=�ij>�J�h�ADc�iàE�<�=�J�H#BD=�Hd�>�EKE�=Lc%E�ACH#c�>BvJ�=LN�H#WUJ�I�=LN

ACc^N�ACR�S�BD=u>JKADE�<�RT=�E�ADI6>J�=`I�H#c�NKACN:E�=�cjE8{4AME�<^h�>�EX>TJ�=�SpH#J:E�=�h�ACc�H�E�<�=LJbh�H#RT>ADc�N E�<�>�E{0=LJ�=$E�<�H#WUi#<jE?E�HtACcjPH#BDP=`R�H#NKE�BDF�>�WUE�H#RT>�E�ACI�S�JKH!IL=�N�NK=�NL��BCADf=6BC=��!ACI�>�B�>I�IL=�N�NL��S�JKH#@!~BC=LR N�H#BMP!ADc�i���E�<�ADc�f%ACc�iU�\ADcUd�H#J�RT>�E�ACH#cà=Lc�I�H(h�ACcUi��\HJ`NKS+=LBCBCADc�is�w=�kßi�kM��Ò�J�ADEKE�H#c�� �}È Z#ÝUÊÒ0J�AME�E�H#c�Ì ;z=�NKN�=LJ�� �}È Z Ü ÊV�§>�F#H#B��n��>JKiF#�nÌ ��=LRt>�ACJ�=�� �}È#È ]�Ê �?=�JKh�RT>c-Ì ,8H#@U@�N���}È Z È Ê(�?=LJ�h�RT>c�Ì ��J�AD=�h�RT>ce� �}È ZjÉ!Ê!�z>�J�iF���§>�F#H#B��UÌ �r=�RT>ACJK=�(ACcTS�J�=LN�N�Êp��ADFj>�f=�ÙW�NKE��%ÌÖÚv>J�Sp=�cjE�=�J�� ��È#È ]�Ê%Æ8i#hU=�ce�%�^>JKE�ACce�ÌØÐ\>#>Se� �}È Z#Ýj�r@�WUE\{4<�ACIX<�<�>}P=vACc$dw>ILE@+=L=�c�NK<�H}{4c�E�HTACcjP#H#BMP#=`>�E�E�=�cjE�ADH#c�>B�JK=�N�HW�J�IL=�N�>N4{�=�BCB�k m ILH#R�RTH#c�h�ADRT=Lc�N�ADH#c^H�d=�>IX<�H�deE�<�=LN�=?h�H#RT>ACc�N�ADNqE�<�>�Ev@UJ�ACcUi#ACc�i6S�JKACH#J�f%c�H}{4BC=Lh�i#=bd�JKH#RÛE�<U=bACc�>ILE�ADP#=QNKE�>�E�=ACcjE�HO>�c�>ILE�ADP#=bNKEX>�E�=8E�H�Sp=�J:d�H#J�RÞH#c�iH#ACc�iuI�H#i#cUADE�AMP#=QEX>NKf(N4c�H�E H#c�BMFT<�>S�Sp=�c�N P#=LJKFg%W�ACIXf%BDF�@�WUE�>BCNKH6W�N�=LN�NKH#RT=4R�=�cjEX>�B�J�=LN�H#W�JKI�=LN�E�<�>�EVP�>JKF�{4AME�<OE�<�=4h�A ��I�W�BMEGF�Hde>I�~I�=LN�N HdrADcUd�H#JKRt>�E�ACH#c�ADcY�(;Q�skU; <�=b=LP(ACh�=Lc�I�=8>I�ILW�R�W�BC>�E�=LhtACcTh�AD�+=�JK=�cjEvhUH#Rt>�ACc�NqACN

Page 27: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � +,+

I�H#cUN�ACN:E�=Lc%En{4ADE�<`i#=�cU=�J�>�B!ADh�=�>NzNKE�>�E�=Lhu{4ADE�<�ACc$R�H#J�=qi#=�cU=�J�>�B!ILH#i#c�AME�ADP=�ADcUd�H#JKRt>�E�ACH#c(~S�J�H(I�=LN�NKACc�i�E�<�=LH#J�AD=�N���=kÇi�kD��m?c�h�=�JKN�H#c�� �}ÈÈ ÝUÊ��rH#ij>c�� �}È Z#Z�>�>c�hx@e� �}ÈÈjÜ �?{4<�ADIX<ACc�ILBCW�hU=6>WUE�HRt>�E�ACILADEGFt>NQ>Of�=LF�ILH#i#c�AME�ADP=�S�<�=Lc�H#R�=�c�H#c�E�HO@p=$>I�ILH#W�cjE�=Lh^d�H#JLk

� Ø,Ï×Ý.Ñ�Û9Ì�ͧË.ÐOÌ5È�Û9È�Í�ä,È�Ó��oË¥Ì�Í�Ù*ï�(*(*+� È(ä�Í�ÑÃÈ�ÓÂÎÚØ,Ï×Ý¥Ñ5Û9Ì�ͧË.Ð�Ì5È�Û9È�Í�ä,È�Óôá�È(Ë.ÐÃÈ�Î�â�È(ÌÒï�(*(*+

� ��� ��1 �z.87 ���� �����`�h��O}������ F � F [N����DNH5a F �^�N����U!�����U ��U'� �?����fg�������U'V�� F {EU � F ]K�H� *���U [ O � F a ���� ��������������

������ "! $#% "� � [ OO F �����ic��BJ�M!a F ���U'��U��D_n5���������q��'&)( ��q5��Ul�~���� F� �$���`U'������ ��U��^� F _ F [N����DNM5a F � �O��������hUqM��Ve����vi�i�����UQ��������Rx�f��J���m���R F�* $+-,��/.$#� 10324��,�56.$#

7 �6.$,��4���8��.$��9�24��,�5".:#�;� ! .$�<�= $,6>@?:>���L��cE���NJ F� M:���`U'������ ��U���� F _ F [9�����NH5a FBA ! �DC9�. � �E���$� "! .$,�. �F�G,H I0 ! +-JK.$��� ! :+�� ! � F �����h�H ��'��������WZ�'� O ���hc

P6���� F� G����Z N�6Ve���if����/r F � F [N���ND5��a F G ��o����v������O'�J��U!�m�fZ�m��U!�����`�����h����m�����HV��o� V�����U5�m�e�����HVp��O�c

O'��!��V�� FML �G�$�G#N � JK�����F.$#�O�G�<�=��PQ>SR$>����IMic9��M�L F� J$���Z N�6Ve���if����5r F � F [9����D�M!a F �D���Ve�����������L*UiIn�����q��^v����� ��' �f �5V �~���e��������vi���*��Ub�m��U!����������� ����m�e����V��

� ����O'�hR��� ^����*���R F�L ������#% � JK�G�4�T.:#�OB���<�=�GPQ>UR:>���M��cE��MNJ F� L:���Z N�6Ve���if����Dr F � F [N���NDFE�a F ]K�'�h�H������U�� L*UiIn�����q��|�f` N���mO�h� �����h����m�e����V�� �\���v����h5O�m��U!�����

�m������}��U'�| ��h�b����������U F {EUp� F ] F ^�� ���UMV5��] F � F ^������U�����2�W& _ F (����h��[ O �' �a F-X $,�JK.$#YJK�G� ! <9 �����9�������#% � JD�����F.$# �4���� 6! $#N �� ��Z\[ ,� "�:,�� �6� ��� ��������������]9����$�G#% � JK�G�4�^,"� � �6.$, 6!M_ [gO'O F M�H!�#cSM�M�D!a FW`��Ia`D���L%�~Y�O����Uq5����c0z~�����H��q F

� E����Z N�6Ve���if����}r F � F [9���5�5�5a F ]K5q�U�h����v�� �����h����m�����HV��/� ����v*�h��I �fD��i���|��U'�l�����5��R F �� "�:�4���E�= :�M>bWb >/E�Jic��IH�L F

� D:���Z N�6Ve���if����Dr F � F �c& ^���N����q����H��~� F [N���FE�D5a F ]K�q5U�h����v�� �����h����m�����HV�� O v!�H����U'Ve� fg��J���������h��v#�����U'� ���Ve�H ��h5UbO���Ve�� � ��� ��hUJ�m��U!������������h�����U FM* :+-,���.:#� 10Sdfe � �G,���JK�����F.$# [S���� 6! :#% �� ��Zcg +-JK.$�7 �6.$,��4���8�ihkjl��JD :, � > b >�J��FE�c�J�MND F

� �:���Z N�6Ve���if�����r F � F �m&\S��������m��U�� F � F [9����D!��a F rs��U!�����D�5����h�����U �hUT���'�h���2��fg5�����������U'� N� *���q5���5������ F�* $+-,��/.$#^ I0dfe � �G,���JK�G�4�T.:#�� ! ��#%9 [S���� 6! :#% �� � >cRH>�����L�cE��M�G F

� ��H:���Z N�6Ve���if����~r F � F �DS��h��������U�� F � F ��& /���������������'��_ F [9����D�G!a F G �� O������'Ve�����U;��U6�Mv������hkcV��i���h5Uo���5 NL� ��UT�m��U5�����D�5����h�����U�� ��UM���mO������V����~Ve5�JO6������ ��U FnL �G�$��#% � JD�����F.$#^O�G�<�=��PQ> b >�BJNE#c���E�H F

� �������Z N�6Ve���if����^r F � F �cZ�U����R5�^_ F F �/�`�����5 ��^r F � F �c& zD��Li����� �^� F [N���5�5��a F?� 5��L*��UqT�m���J5��R5�������5���i���HVe�h�9R�����U'� O'��5P�h��� ���%o�V���h�9R F {EU � F ]^���JO'P6���h�7[ O � F a � A ! �pq.$��+-,��r.$�/9ts@,��u����� � 10jl.:� ! �GJK.$��� .$#^v-w:��#�# � F ���� N����������l� O �� ���v*������Y�V��h��U'Ve� �7�P���� ������ F z F

� ���$�/�5���������R5�� F F [9���ND�L!a F\x $,�w:���8�yjz��JK $, � F/{ *fg5���2� { *fg����lt�U��v����� �� �9Rp�D���� � F� ��M:�/�5���������R5�6� F F [9���5��H!a F g +-JD.:�ljl��JD :, � A ! �6 :, � .:��9 [ ,�. ��� � F ��5U'���U��/���#In����U'Ve� O ���hc

P6����w�` � N�Ve�H�i���� ����2��� F� �cG��/�5���������R5��� F F �Q&��`� ��V����D� F � F [N���FE�G!a F2� 5��L*��Uqs�m���m���R F ��U;� F ^iI^���|[ O � F a ��OB� �����

C9$�$.$� � � ��� 7 �6.$,��4���8��.$��9Kjl $������.:�E�= :�M>q2/| _ �����h�H ���������WZ�'� O ����P'���� F� �IJ$�/����*���R��?� F � F [N����DFJ�a F ro�5 9������Rj�fn���� P6�� ���V�U*��bP6���JV���bP�hU6�i�����U6 ��J{EU!������U'���h�NV��������UM�f

�����H�i���h5U' ���hO6 K5�/f ��Ve�� 6} * $+-,���.:#�0G $,BO� � �6.$, "! ���zjl.$� ! ��JD.:�E� G� d\9:+ .:�E�= :�M>c~8�<>�D�M�cd�ND F� ��L:�^������U�����2�!] F � F [9����D�M!a F `D5�Uq ]K�����������U�� Dro��U!�����'����� ����m�e����V O ������� ���� IK5��L*��Uq��J���m���R

��U'����R� N�H F � ! ��#%9 L ������#% � JK�G�4�=>c� b >�D�#�#cSD�MNH F

Page 28: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

)�=,= ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

� �BE��^��� ����5U�� F ( F t` ��|�fnVe5q�U�h����v���V���O'�5Ve�h�9Ro�hUx�����5����Uq'� O �}��V �� �f/O���V��� � N��Uq �hUfg����m�������Ufg���� ���� *�?fg��~���m�J�����H�i���/����V������*��U'� ���e����U!�����U F * :+-,���.$#� 10�OB�6.W9$���8� ;� ! .$�<�= $,6>�~$?:>2�#���ic���M>E F

� ��D:� ]^���mOP6���h�0��� F { F F [N����D>Ei�!a F W`�e�9I^���L �hU!�����Nfg������U'Ve�J��U'�o�J��U!�����?�b�� ���hO'�h�HV��������U Ff* $+-,��/.$#f 10d�e � ��,���JD�����F.$# [c�6�� 6! :#% ��Z 7 �6.:Jq��� �$>fjl��JD :, � >@.$�/9t�� "�:�4���E�= :�M>c~�R$>~��H5�ic�����M F

� ���:� ]^���mOP6���h�0�*� F { F F [9���NDFEiP6a F �7������6V �����U���v������hk6V��i�����U��5��U6�mO�����m�hU'q �f2� �'� ���hO���HV��i���h5Umf ��Ve�� Fjl��JD :, � h �f "���������= $�M>\~��$>[M�G5��c MNL�G F

� ��H:� ]^���mOP6���h�0�2� F { F F �Y& �������6��� �� F � F [9����DNJ5a F rs��U!�������b�� ���hO'�h�HV��������Uj �L*�h��� �n N�����'V ��������}O���cV��� � ����U'�l��V � ��H �� ���h5U F ��.$��.W9$�=.:� * :+-,���.$#m 10 [S���� 6! $#N �� � R��$>�M�MNDicSM�L�L F

� ����� ]K5�h����U' ���� F r F �Q&\���f����' �� O F S F [9���>E�J5a F � �O����������Uq�cd�5V ����vi�i���h5Us��������Ro�f/ N������U!���HVJO���cV��� � N��Uq F [S���� "! $#% "�:� .:#YO�G�<�=��PQ>��:?:>[GFHFE�c G!��D F

� ���$� ]K*5U��R5�}� F �2Y*I/��U' ��U��6� F � F �Y& �����'�2�%Y F S F [9����D�D!a F �ZV � ��H N�h�����Uj�fD�m��U!�������b�� ���hO'�h�HV��������U �L*�h���0� O v*�����U'V�� fg��Z���'� ������U' N�h�����UsP}�e�9I^����UTV���U!����Uql��U'�s���e��������vi���� N�����i����q����� F �� "�:�4���E�= :�.:��9q|�� � ��,�+ ���= $��>U��>�M5��MicSM�GFJ F

� ��M:� ]K5��U'�e���~� F � F �DY*����5U��?y F ��`���h�V���5�D� F ��&���5������ ��~� F [N����DND5a F ]K�q5U�h����v����m������H �f` N���JcO'�h�|�m��U5�����7�����h���'�J�����HV��J�\Ve���h���HV����7����v!����I F �f. ! �=��, � 9�� [S���� 6! :#% ����=� �� "�:�4���E���$���Mdc+-,� � �6.$�;�+-#�#%���E��� 10K�� "�:�4���E���$� [S���� "! $#% "� � >��:>[JNJ��ec�JNE�� F

� ��G��'Z���6����U'���^Y F �@& ]K5���U��^� F [N�����'��a F �9I^M�m��U!������V����HVe�'���������U �R� 9������ ��l� V��� ��l N���'�R;�f ���v5�������5V�����V���h�H�bIn� ���lO'���� N����v5��� ��OO�� ��h���i���h5U F p ��+-,� ������ "! $#% "�:�=.$>c?�$>~��H�GFJic��IHFEBG F

� ��J$� ��������R��\ F ] F ��& ^������hUq5�'���JcF`�'P�������nr F [9���ND��!a F O *������U'����vi���h�H��i���h5Uu�f ����T 9����������q5RV��'��HVe� �m*����%fg��Z������h�����U Fn* :+-,���.:#^ 10Bdfe � �G,���JK�����F.$#U� ! ��#%9 [c�6�� 6! :#% "� � > b� >?��E�Jic����5� F

� ��L:� ��������R��M F ] F � ^��iInU��'Y F ] F �4& Y�����������U'�#R!��L��5��z F � F [9�����'��a F ]K5q�U�h����v������'��� ���h5U��7� ���������U'q��h���'����U'���� 9���'��Rl�f~ 9����������q�R V��5��V�� ��U'� �O6�����*cd�f�cdO���Ve�� � ��hUqm���h�}������U'Ve����UsU5����������U'�����������m�����HV����h��R ���H ���P�����lV���h�H������U F�L ������#% � JK�G�4�T.:#�OB���<�=�GPQ>S�$>�E�DFE#c�E��FE F

� �NE�� ����*��U��n� F � F �\& �~����L*����U��^� F r F [N���>E���a F � V�����U5�m�e�����HVp��U'����R� N�H m�f� N���mO���o������h�����U F[c� � 6! $#N ���� .$#nOB��� �=��PQ> �:>�M5����c M�GNM F

� ��D:���Z������U'U��}r F Y F �Y& �` ��'Ve���if����}r F � F [N���NDNJ�a F Y*���mO���b��U6�oVe5�JO'�h� �m��U5������������h�����UT��Ve��5 � ���v����h5O�m��U!� Fn* :+-,���.$#m 10Bdfe � �G,���JK�G�4�T.:#U� ! ��#N9 [S���� 6! :#% � > b � >CG!�icTE�H F

� ���:���`�����hR5��� F S F �W& WZ������U'����� F Y F [N���NDNJ�a F Y������Nc0������� �m���m���R�O���Ve�� � ��� ��hUJVe��'U5���hU'q F �� ��������������[c� � 6! $#N �� � >\~ >[G'��E�c G�GNG F

� M�H:���`����������U���] F r F �$& Z�PP' ��i� F _ F [N���ND��5a F �^�N����U!�����U6���5�������U'�' ��f�v*�H N�'����I^����Z����V��q5U� ���h5U F* :+-,���.$#c 10qdfe � �G,���JK�����F.$# [S���� 6! :#% �� ��ZHg +-JD.:� [ ��, � � ���= $� .$��9 [ ��, 0G $,�JK.$� �G>'~W��>�����G�c�IM5� F

� M�����`����������U��K] F r F ��& S���h��������U��K� F [9���NDNJ5a F ro�� ���hO'�h�l���� N5���Ve�� �hU ���hv*�H����� �i������U!���h5U��|�V���! � Ncd�J���������� N�~�f6��U'����O6��U'����U'Ve�n�f6����J�H �O6�����HV^���� N5���V��� F-* :+-,���.:#� 10Sdfe � �G,���JK�����F.$# [S����� 6! :#% "� ��Z�g +-JD.:� [ ��, � � �E�= :� .:��9 [ �G, 0G :,�JD.:� ��>\~�~$>CGFHic G5� F

� M5�$���`� ��V����Z� F � F [9���FE�D��5a F G ��j������o�f� ��5�N��c ������� I^���L*�hUqM�m���m5��RX�hU �J��U!����������� ����m�e����V F�� "�:�4���E���$� [S� � 6! :#% "� � >�~ � >[MNH5�ic M!��M F

� M�M:���`� ��V����!� F � F [9���FE�D�P6a F ro��U!���������� ����m�e���HV��~Y*�5�N��c ������� N�������q5�^��U'�J�hUfg����m�������UJO��*V��� � N��Uq��U �ZVe�q5U�h����v��7 �L*�h��� F {EU � F r F ���� �q���H�2�#� F � F �?�����h��q����hU6�#Y F F S�L*L5�������& _ F �����5 N���K[ O � F ae��� "�:�4���E���$� �4���� 6! $#N �� � .:��9H��� � �E,�+ ���= $�j[ OO F MNM�ecSM�MND5a F W`��I/c�`D���L}�~�7�h��U!�'� F

� M�G����5�' N����r F � F �-& ]^����O6��U5�������!� F � F [9�����!��a F � V���O'�5Ve�h�9R �����5��RJ�f�Ve��mO�����'��U' ��h5U���{EU6���hv*�H���'����� �%������U'V��� /��U IK5��L*��Uqb�m���J5��R F [S���� "! $#% "��� .:#nOB��� �=��PQ>����:>~�����ic���G5� F

� MNJ$�'(����U���m��U��M F [9���FE�M!a F C���T�������= $� .:��9 ���B :,�� F O Uq5�h��IK*��l]K��� �2 ��'W`�6�'�D����U!����V��ecE�`����� F� M�L:�'(����U���m��U��� F �8& G �����H N����U���� F r F [9����D�G!a F ]K�'��Uq���Uq v*�h��I� ~�f2�i������U5���h5UJ��U'�m����������i����Vec

�h�9R F {EU _ F �~������ ����������Uo��U6� _ F Z�#v5�� �[ O � F ae� 24.:,��=�G���=� � I0y.$���T�������= $�x[gO'O F ����c L'��a F W`��I`D5��L%�~�`V��������m��V��7���� � F

Page 29: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � )�=�)

� MFE��'(��#R5���� F F [N���ND�L5a F G ��^����v5�����O�m��U!���f���i���'�����i����V����5V��q5U� ���h5U F �� "�:�4���E���$� L ������#% � JD�����E>~$>��BJNE#c���E�H F

� M�D:�'(��#R5���� F F ��K5UU��k'� �5z F �-& ]K���U���� F [9����DNM��W`iv����bP6����a FFA ! �]9W�G�$��#% � JD�����S I0.:,���� ! JD���E� � ,� �5�#%��J � :# � ��� �q��� �=��� ���_ �~��O}����O���� N��U!����� �i�?����/�m��������Uq��f����n�7 �R*V��'�U5�J�HV� ?Y*�Ve���e�9R5�Y��Ui`����q5 F

� M��:�'(��#R5���< F F �i��� � �hU' N����U����R��i� F �i]K�'��U���� F ��& ^�UU'�ek'�0�#z F [9���ND��!a F Z��v����h5O�m��U!���f*��o|Ve����U!������h���'�J�����HV Ve��mO����i���h5U F * $+-,��/.$# I0d\9$+ .:�E�= :��.$# [S���� "! $#% "� � >��8~�>[GNL>E�c GND�H F

� GNH:�'( ! N�'�J�H��������� F � F � & �Z N�'V�����f���� r F � F [9�����'��a F G ��M����v5�����O�m��U5� �fmV������������U�� l�m��U!������b��h����O�h�HV��������Us �L!������ Fn* $+-,���.:#^ 10Bd�e � ��,���JD�����F.$#�� ! ��#%9 [S���� "! $#% "� � >���~$>�J�MicSD�� F

� G'��������S'��v*���5��� F � ^�� ���U�V���� F �B& rs��L�5U� �NV���� F [9����D�D!a F ]K�q�U'� ���hv5�o����� ����m�e���HV�� O v!�H����U'Ve�sfg5�5P���hq!�i��5��R|�5V ���hvi�i���h5Up�f������h����m�����HV�f ��V �� F jl��JD :, � h �� ����������= $��>c~W��>CG>J#c�J�M F

� G!�$������S'��v*���5��� F �r( ��H��L%�]& ^�� ���U�V���� F [9���5��#a F {EU'����v*�����6��� ���h�%������U'V��� o��U'� ���v����h5O�m��U!�����V��6��Uq5�^��UJ������5 � ��Ve�H�i���hv5�K�����H�i���h5U' ?���m�Uq U*��bP6���� FM* $+-,���.:#� I0Sdfe � ��,���JK�G�4�T.:# � ! ��#%9 [S����� 6! :#% "� � >\�$?:>��NJ�Lic9�NE�G F

� GNM:������S'��v*���5�D� F Y��5���� �L*R��7� F Y F �U& ^�� ���UMV5�D� F [g��UQO'���� � �a F Y*������Ve�����U �f�O���Ve�������� ��U;�m��Uc�������5����h�����U��o_n���� � N�� � ���Uqj����sO���P�����JcE N�NV��l�e�%��Ve� ��UX�5����h�� FB* $+-,���.:#B 10Hdfe � �G,���JK�����F.$#[c�6�� 6! :#% "� ��Z 7 �6.$,��4���8�:>�jl�GJK $, � >@h �� ����������= $� _

� G�G������������������*� F �M& S6�#R���0�*r F [9�����NJ5a F!� ���UpO�H���' ��hP'�h��� �9R��9�6��q��m��U!�� ^ ��O}���� N�����Zf ��V �/���e��������vi���0�G �'���� ���mO�����f����� *�'�*c0��v���Up���}��V �`5UlO'������'Ve��v������hk6V��������U F jl��JD :, � h �� ����������= $��>S?8R$>M�G�c GND F

� GFJ$�����������������7� F �S& ^����U5�' � N�0�Dr F [9�����'��a F �`���h����������� � ��lV��q5U� ���hv5���l�D��*V��� � N�6 ���Zv����h5OO6��c�m��U5����e�`�� ��������U6Ve�� ^��U'����v*�����'�����h�� F 7� C������ � [S���� "! $#% "�:�� �+��G>��8~�>[G'���ic GNM�D F

� GNL:�����������������6� F �/& Y��h��q��������6_ F Y F [9���5�NJ5a F S'������ �O6��V �� `�fD N�����i����q��HV�V��'��U'q�����]K�U!������P�����h5Up��V��'�h�H������U�� `��������U'�hUqp� ��h����O����V��i���h5U Ff* :+-,���.:#f I0rdfe � ��,���JD�����F.$# [S���� 6! :#% �� ��Z�� ������,�.:# >~$? b >DNMicE�FE F

� G>E������������������2� F � /�������e������Y F O F ��S'�#R�5� �%rx�n& �`P}���0��� F [9���5��G*a F ����������i����VJ��Ve����v#�������UT�fK�5�*c�� ���h5Uo��U'�l� �'� ���hO���HV��i���h5U f ��Ve�� n��Us�������m��U!������Rp �V��*���V�����������U F^* $+-,��/.$#^ I0]dfe � �G,���JK�����F.$#� ! ��#%9 [S���� "! $#% "� � >\� >��5��G�cE�NJ�D F

� GND:�����������������D� F �7S'�#R5��0�Dr F �c& ��P%���0�^� F [N���5���a F �Z � ��Ve�H�i���hv5�pVe5U�fg�' ��h5U;�e�%��Ve���hUXVe�q5U�h����v�������h���'�J�����HV�� O v*�H����U'V�� fg���O6�������H�����hR �������U5�m��' /O���Ve�� � ��� F dc+-,� � �6.:�t;�+-#�#%���E���� 10H�� ������ ������$� [S���� 6! :#% �� � >�~�~�>�J�DFE�cSL�H�G F

� G5�:�����q!��U��7� F F [N���>Ei�5a Ff{ UQ���� �' ��l�fZ� Ve5U'Ve�������U!�b�m���m5��Rx��5�5�M�� �m���� �����p���N����U!�����U��U'���������������HVe�h�9R F�* $+-,��/.$#/ 10\dfe � ��,���JD�����F.$# [S���� 6! $#N �� ��Z@g +-JK.$� [ �G, � � ���= $�z.:��9 [ ��, 0G $, �JK.$� ��>S�$>7��D5�ic9��HFE F

� J�H:�����q!��U��'� F F [9���ND�H!a F �^�N����U!�����Us��U'� ����������i����V�� �9Rp�hUoY!����*�O ��U6�pO'�����m�hUqm���� �L� �� G ������R��U'�l��i��� F �� "�:�4���E���$� [S���� "! $#% "� � >\~$?�>�J5��M�cSJNJ�M F

� J��������q!��U��6� F F [9����DFJ�a F Y�L!��������U6�s����������i����V�� �9R%�7_n�����������U' ��'���mO����V��i�����U6 ��'��U'�lfg��������b���h����Vec���h5U F ��.$�/.�9:�=.$� * :+-,���.:#^ 10 [c�6�� 6! :#% "� � >@R��$>�MNLFE�cSM�DNL F

� J��$�����q!��U���� F F [9����DND��5a F �`����5���i���HVe�h�9R��2���� ���'��V��� `��U'�o�m���J5��R%� G �'������e����V����?Ve5U5����iv5���� N���� ��U'�pO���5V ����V����2���JO'�h�HV��������U' F g +-JK.$� X . �F $, � >SR � >�J�D�M�cSJ���D F

� J�M:�����q!��U��'� F F [9����D�D�P6a F G iI/�����p��Ul��U' N����U'Ve� �����5��R|�f?������5���i���NV��������U F [c�6�� 6! :#% "�:� .$# O� ��<�=��PQ>��W�$>CG!�5�icSJ5�NE F

� J�G������q5�h�5�K_ F � F �c& /��������h��R��/� F F [9���NDFE�a F ]K�q5U� ���hv5�s�D��*V��� � N�� ��U ]K��U!���hUq F�* $+-,���.:#� 10d�e � ��,���JD�����F.$# [c�6�� 6! :#% "� ��Z 7 �6.$,��4���8�:>�jl�GJK $, � >c.:��9l�� ����������= $��>U?:>[M�IHicSM5��L F

� J�J$�����q5�h�5�K_ F � F �n���h���*���R��@( F � F �S& � R!U'U��Kz F [9������G!a F ]K5�U!����UqM�UXIK5��L*��UqT�m���J5��Rx��U�����h���'�J�����HV�O��5P����� ����v*�hU'q F jl�GJK $, � h �� ����������= $��>S?W?:>�M��FJ#c G'��H F

Page 30: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

��� � ���������� ������������������������������ �!�#"$�%�� &!'%����&( �

� J�L:�����q5�h�5�/_ F � F � /���'��������R5��� F F ��ro����U�5��� F ��`5U'Ve��U�� O F ��& Y*���O�����L}�n_ F [9����D5�5a F~� ���L!c��Uqp�J���m���R ��U'� ����J��U'����R� N�H ��f7� V���mO���� o NL*���h��P*Ro N��Ve5U'�����R|���� �L �J��������5�h5q�R F C �F.[c�6�� 6! :#% "�:� .�> ~$>�J�MicSDFE F

� JNE���rjV�]K��5 �L���R5�}r F �2�`��������R5� � F �Y& Y*�L5��0�%Y F ] F [9�����'��a F rs������H ��f7�����h����m�e����V f ��Ve�Z���e��������vi���0��`U ��v#���h�6�i�����U �hUp�h��q��!�/�f2k'U'��hUq! Kfg��5� U'����m���}��U'��P������U�cE�������q����� ��P �9��V �� FY* $+-,��/.$#Y 10d�e � ��,���JD�����F.$# [c�6�� 6! :#% ��Z 7 �6.:,������8�:>fjl�GJK $, � >@.$��9l�� ����������= $��>c~ >�M�MFE#c M5�FE F

� J�D:��rjV�������2�6� [N���>E�Ei�!a F � ��'�������� �Ll���� NO}�U' ����m������� �9Rp�e�%��Ve���nY*�OO}����`fg5��� ��h����O���Ve�� � ����m������� /�f?���N����U!�����U F�� +�.:,��T��,�# � * $+-,���.:#^ 10Bd�e � ��,���JD�����F.$# [S���� "! $#% "� � >c?��:>[LFJ���c LNLFE F

� J��:��rjV�������2�6� F [9���>E�EiP6a F �~���������h���2O���V��� � N��Uq|��U6�l���� O6 NR�V��5�h5q��HV����2���efg����Ve��5��R|O}������*� F C �F.[c�6�� 6! :#% "�:� .�> b ~$>�M�D��c M5�� F

� L�H:��ro�h���h�����c( F S F �c& �~���������� ��U F _ F [9������H!a F Y!����������Uq ��x���� I^��� N�5� O �%��Ve�� m�fZ��������U��Uqo���b��h����O�hRp�U V������������U�� n�5����h�����U F �� "�:�4���E�= :� _ R >����IMic9��G*� F

� L����ro�h���h�����-( F S F ��?������� �����������*r F �M& ( ��������Uq'� F [N���ND�G!a F ]K5q�U�h����v�������� ����m�e����V��D]K5�mO'������ ��U�f�5O6�����������U' FY* :+-,���.:# 10Bdfe � �G,���JK�G�4�T.:# [S���� 6! $#N �� ��Z 7 �".:Jq��� �$>fjl��JD :, � >c.$�/9t�� "�:�4���E�= :� _# � >[GNL�c LNH F

� L5�$��ro�hR!��L��5�D� F �7�5�' 9���7r F � F �U& ]^����O}��U!�������D� F � F [N������G!a F�� ���L!��UqT�J���m���RMV��U' N��������U!�� b�U���� ���� N5�h�����h5U �f ���� ��HV�������� P��q���h�9R%�x������U5������U��UqQ�b�� ���hO'�h� �hU!������O�������������U' �hU U�����������V��U!��� *�� Fn* :+-,���.:#^ 10]jl��JD :, � .$�/9 7 .$�8��+�.��8�G>SR�R:>?��E�JicE��H5� F

� L�M:��WZ������U'���?� F Y F �m&w��������R��?� F S F [9����DNM5a F ]K5�U!����UqsP'�5V�L!I/����� O������'V����M NR� N�����m�����HV���������� F* :+-,���.$#m 10Bdfe � �G,���JK�G�4�T.:# [S���� 6! :#% �� ��Z � ������,�.$# >@~�~$?�>�MFE GNH F

� L�G���WZ�#v�5U��� F [N���ND�G!a F _n�� �����Ve�� �c �\���������e����V����n N5�O N��5U�<} �7 �R�V������q5��V����K_���v*�h��I��7��5����L�cE��M�G F W`�#v5�U��^ F ��& ���O�'������ F [9���FE��5a Ff{ UM����l��V��U5� R �fn����p�*�����U;O��*V��� � N��Uq �R� 9����� F [S���� 6! $#N ���� .$#nOB��� �=��PQ>�� �<>�����G�c9��J�J F

� LNJ$� { q!����U���� F F �~����v*��U����� F r F �m& O �H �U����� O F � F [9���FEi�!a F rs���� �������m��U!� �f/I^���L!��5�5�oP*RT ���Vec5U'�����Rm���� �L* F g +-JK.$� X . �F $, � > >4GNG�cSL�G F

� L�L:� { q!����U�� � F ] F ��ro���N���hU��^ F � F �m& �~����O��n( F _ F [9���ND�H!a F �D���Ve�� � ��hUqp��������U6� �f^��U'V�*��hUq6�� �6�i� ��*�� � ���V��U'�����Rl���� �LsO6���Nfg5������U6Ve�J��� �'��Ve�6} * $+-,���.:#� 10 dfe � �G,���JK�G�4�T.:# [S���� "! $#% "� ��Zg +-JD.:� [ ��, � � �E�= :� .:��9 [ �G, 0G :,�JD.:� �G>\�<>[MNJNJ#cSM�L>E F

� LFE����~�5 N�'�h������� F [9���ND�G*a F �D���Ve�� � ��hUqm N����q5�� ^��Uliv5��������OO��Uqb���� �L� �� O v!�H����U'Ve��fg�����V���U!�������%P}���c��������U��V�L F@* :+-,���.$#\ 10ydfe � �G,���JK�����F.$# [S���� "! $#% "� ��Zlg +-JK.$� [ ��, � � ���= $� .$�/9 [ ��, 0G $,�JK.$� �G>~8�<>~��H!��M�c��IH�GNH F

� L�D:���~�5 N�'�h�����*� F [9������G!a FM{ v������H��O'O�hU'q �m��U!�����%�O}�����i�����U6 D��Ul ����������6O}����fg�������U'V��`In�h���lO����v*�h��I F� +�.:,��T��,�# � * $+-,��/.$# 10]dfe � ��,���JD�����F.$# [S���� "! $#% "� � > b� C]>~��L'�ec����'� F

� L��:���~�5 N�'�h�����%� F � & �5��U6 9���U���] F [9������#a F ]K����U5�J��������V ��v*�H����U'V�� fg5��Ve��U!��������O}5 N��O}�U���m��U!���Uo�����mO}��������hR iv������H��O'O�hU'q����5 NL� F�� +�.$,��F��,�# � * $+-,��/.$#� 10rdfe � �G,���JK�����F.$# [S���� "! $#% "� � > b ~<C]>���ic GFJ F

� E�H:���?! NU'�����5r F { F �-& ^����� ��!Y F � F [N���>E*��a F ]K5�JO}�U'��U!�� K�f����N����U!�����U F [S���� "! $#% "��� .:#�O�G�<�=�GPQ> �$>M5���cQGFH�D F

� E*�����?! NU'������r F { F ��& Y*U*R*������D] F _ F _ F [9���FE�J5a F S'��V��h���h���i���h5U;��U'�;�hU�'�hP�h�����U �hU;����lO��*V��� � N��Uq�fK ��hq5U'���H F {EUT� F r F � F _���P'P� ��� & Y F `5�J�HVl[ O �' F a � C���T�������= $��.$�/9 [ ��, 0G $,�JK.$� �G>G2 _ [gOO FLNL���c LND5��a F W`��I `D���L}�D�ZV��5�����m�HVZO'���� � F

� E��$� Y��� �%���hU��}_ F r F �/& Y�V��U����������� � F [N���FENE�a F ]K�U!��������h��� ��U'� �������������HV �!�'�m��Us�hUfg����m�������UO'���Ve�� � ���Uq'��{N{ F �?����Ve��O����6���}�h������U�hU'q'������������i����VZ�i������U6���hU'qJ��U'�p� q���U�������6��������R�� [S� � "! �#N ���� .$#�O�G�<�=��PQ>�� b >?�#�NE#c�����H F

� E�M:� Y��h��q��������}_ F Y F [9����DFE�a F G �� O}�����h�H Z�f7�#v�������q���Uq���i���|iv5���` N�����i����q����� ��n��Uo� ���mO��� �f7V��'�h�hc�����U�� n�5����h�����U F^* :+-,���.:# 10dfe � �G,���JK�����F.$# [S���� 6! :#% �� ��Z � ������,�.$# >@~ � ��>?�NJ�Hic9��L�G F

Page 31: The University of Texas at Dallasherve/laf.wm.pdf · 2003. 11. 26. · abO6 ! 9 cd Ve 7fg h iI O; j lk' N 5 mIn h o ip]^ U q prs h UutU' hv5 N h9R F wO h m hU6 Rx O6 5 Nm fZ N lk'U

� �L�+�% ��� �����"(��������#� � �����

� EBG�� Y��h��q��������5_ F Y F [9����D�D5�5a F {EU'����v*�����6���6�� �%������U'V��� K�hUp 9����������q5RbV��5��V��� ��?��*��� N���'����U!�� ��!U'��NcE ��cq5**�l N���'����U!�� ��'��U'�pO}����fg��V ���h5U�H 9�� F � ! ��#%9 L ������#% � JD�����E>c���$>�D�MNMicSDNJ�� F

� E�J$� Y��h��q���������_ F Y F [9����D�D�P6a F Y!����������q5R V����HVe�^O���Ve�������� ?��U'� ����n����v����h5O�m��U!���f6�b�� ���hO'�h�HV��������U �L*�h���H Fn* $+-,��/.$#^ I0Bdfe � ��,���JK�G�4�T.:# [S���� 6! $#N �� ��Z � �G�/�G,".$# >c~W~ >���J�Dic9�NE�J F

� E�L:� Y��h��q��������*_ F Y F �M& �5��U'L!��U' �� O F [9����D��!a F g :P 6! ��#%9:,���� 9$� �� $�$��,r����P � ��,�.$�F�T�:�=� ��_ �`�h���H �����h�5��W`�6�O ����P'���� F

� E�E�� Y��h��q���������_ F Y F ��& Y*���O�h��R��K] F [9�����NJ5a F zD�����H�i���h5U��? N���h��V �����U��?��U'�xVe5q�U�h����v��pV��'��Uq5� F {EUX� F�Z���hfg����u��U'� G F Y*�h�m5U [ O � F a � L �G�$�G#N � ��� � �������������� $J � ���F�G� � Z p ��P . �W� ,� <. 6! � � �F � ,� � �6� JD <9���# ���8� _ �����h�H ���������'WZ�'� O ���hP'���� F

� E�D:� Y��h��q��������_ F Y F ��& Y*�'����q�������� F [9���ND�G*a F Y!����������q5R V��5��V��� /��Uo������h�����Us��U'� N�P������V ���h5U��D��iI� V�����H������UQL*UiI In�6�i�m��M��8} {EU ] F Y��O��H��U [ O � F a � s@,��u����� � 10 �������������� � w$��#�# � [gOO F�5����cE����M5a F �`�h���H �����h�5�W`�6� O ����P'���� F

� Ei�:� Y*���:V�R*L}� O F � F ���` ��'V�����f����r F � F �M& �`���m��UU��r F Y F [9����D!��a F � U�e�9I^���Lm��OO��5�5V�����J�m��U!������b��h����O�h�HV��������U FQ* $+-,��/.$#m I0]dfe � �G,���JK�����F.$# [S���� "! $#% "� ��Z 7 �6.$,��4���8�:>Ujl�GJK $, � >h �� "�:�4���E�= :�M>�:>CM!��H�c MNMNJ F

� D�H:� Y�v���U6 N5U��[H F �/& Y �9�P}����q'�Y( F [N���ND�M5a F O v�5�h�����h5Us�fKV��q5U� ���hv5� O���Ve�� � ��� nfg5�� N5�hv*��Uq ��h�mO����5����h�����Ux�������Uql����mk'�� N����������� �V��*��~R������� F v .:��9:����.$�<�=.$� * $+-,��/.$#S I0 [S���� "! $#% "� � >'? b >�5�BE#c��#� F

� D��� � �HV�L���U' ��o] F F [9���ND�H!a F G �� N�����'Ve������ �fT�i������U5���h5U'���l���� �����Ve�� F {EUw_ F Y F W��HV�L����� ��U[ O � F a F C���T�������= $� .:��9 � ��, 0G $,�JK.$� �G>q2/|I|�| _ �`�h���H �����h�5�'W`�6� O ����P'���'� F

� D5�$� � �HV�L���U' ��5] F F [9����D�G*a F �D���Ve�� � ��hUqZ���� N5���Ve�� ��hUm�i������U5���h5U F {EUb_ F �~������ ����������U���_ F Z�#v*���� ��& � F K���i���9Rj[ O � F a �\2�.$,��=���E�=� � 10r.:�E�F�G�4�E�= :�s[gOO F L�M�c��IH5��a F W`��Ia`D���L%�?�ZV��5�����m�HV��7���� � F

� D�M:� � �HV�L���U' ���] F F �^& � ���hUq!������U������� F [9���NDNJ5a F �D���Ve�� � `V��U!��������m�U�h��5����Uq6� G ��m�e�%��Ve�� ��f �O'�����H������U'�lv�����P'������P���h�h�9Rp��U'� Ve5U'Ve�������U!�/���� �Lp�������U'� F {EUs_ F O F O P6���N�� �& ] F � F O P6���N�� [ O � F a � A ,�����9 � ��� ��,E�8 $�/ $J � �� .:��9 ! +-JD.:�q0G. �F $, � > 24 :# _ |I| [ OO F �NJ#cSM5�5a F

� D�G�� � ��UL5�����m��U���� F � F �^& Y�V���m�H�*����� F [N���FE�G!a F �Z � ��Ve�H�i���hv5�bVe5U�fg�' ��h5U' ��hUM�m��U!�����~����� ����m�e����V F* :+-,���.$#m 10Bdfe � �G,���JK�G�4�T.:# [S���� 6! :#% �� � >@~ � ?�>-E�M�G�c�E�M�L F

� DNJ$�]`D�����Q` F ` F �U& � �HV�L���U' ��7] F F [N����DND5a F G �� ���� � �*V����������Ux�f` N�P��9��V �J�m���� ������ �f��m��U!�����I^���L�!���|��U'�pO6���Nfg5������U6Ve� F g +-JD.:� X . �T :, � >cR � >~�5���ec�����H F

� D�L:� �%P���������2W F � F �n&\���q!��U���� F F [N���ND�L5a F/{ Uj�����������U'�� R �f7�m��U!������O'���Ve�� � ��� ���� V��� �� N���6��R �f������h����m�e����V F * $+-,��/.$# 10]dfe � ��,���JD�����F.$# [S���� "! $#% "� ��Z � �G�/�G,�.:# >S~�~W��>D�5��Dic���MNH F

� DFE�� �%P���������5W F � F �W& ���q!��U���� F F [9������H!a F�{ UJ����n�����H�i���h5U P}�e�9I^����UJO'������'Ve�����Um��U'�bv������hk6V��ic���h5U|���� �L* K��U|���'��O6 NR�V��5�h5q�R �f� ��h�mO���������h���'�J�����HV FY* $+-,��/.$#n 10�dfe � �G,���JK�G�4�T.:# [S���� "! $#% "� ��Z7 �6.$J ���8�:>�jl�GJK $, � >@.$��9z�� ����������= $��>c~W��>[DNMicE�FE F