Download - Data From Tenopir & King
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Data From Tenopir & King
• 18,000+ scientists and social scientists
• 1977 to present
• University and non-university workplaces
• Mostly North America
• Recent studies of Astronomers, Medical faculty, faculty and students at several universities
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Three Types of Data
Demographic
Estimates of behavior
Details of “last” reading
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Articles:
“can include those found in journal issues, Web sites, or separate copies such as preprints, reprints, and other electronic or paper copies.”
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Readings:
“going beyond the table of contents, title, and abstract to the body of the article.”
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150172
188216
0
50
100
150
200
250
1977 1984 1993 2000-03
Average Articles Read per Scientist
Ave
rag
e n
um
ber
of
art
icle
s re
ad
per
scie
nti
st
Year of Studies
www.dlib.org/dlib/october03/king/10king.html
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Scholarly Article Reading
Work Field Articles Read (Per
Year)
Time Spent
(Hours)
Time Per Article (Min)
Univ. Med. ~322 118 22
Chemists ~276 198 43
Life Scientists
~239 104 26
Physicists ~204 153 45
Soc Sci/Psych
~191 121 38
Engineers ~72 97 81
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Average Annual Amount of Reading
0
50
100
150
200
250
ScholaryJournals
TradeJournals
Books Reports Patents
Engineers
Scientists
MedicalProfessionals
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0
50
100
150
200
250
300
ScholarlyJournals
TradeJournals
Books Reports Patents
Engineers
Scientists
MedicalProfessionals
Average Annual Amount of Time (Hours) Spent Reading
(Hrs)
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Purpose and Ranking of Importance: University
MedicalPrimary Research
29.9%
Current Awareness
22.1%
Teaching 16.9%Writing 11.7%Other Purpose 9.0%Background 6.5%Consulting/Advising
3.9%
#3
#1
#7
#6
#5
#2
#4
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Average Number of Personal Subscriptions to Scholarly
Journals
0
1
2
3
4
5
6
1977 1978-1983
1984 1985-1989
1990-1993
1994-1998
2000-2001
2002-2003
Years of Observation
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Personal Subscriptions
All studies average 2.2 All UT science faculty average
3.8 Medical faculty average 6.3
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Sources of Readings
Separate
Personal
Library
Astronomers
Medical Faculty
Universities
42.9 %
21.4 %35.7 %
22.1 %
15.6 %
62.3%
49 %
36 %
15 %
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Print or Electronic
Electronic
Astronomers
Medical Faculty
Universities
80 %
20 %
75 %
25 %
63 %
37 %
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62.3%
20.8%16.9%
MeansMeans ofof LearningLearning AboutAbout ArticlesArticles ReadRead
Medical Faculty
Browse
Search
Other 39%
21%
37%
Astronomers
22%
29% 49%
Universities
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Educational Degree Print Electronic
M.D., only 33 1
Ph.D., only 18 17
Both M.D. and Ph.D. 1 0
Neither degree 4 0
Total 56 18
FormatFormat ofof ReadingReading
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Astronomy Articles Read per Month vs. Productivity
0
2
4
6
8
10
12
14
Non-Prod Average Productive
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Awareness and Use of ADS by Productive PhD
Astronomers
0
10
20
30
40
50
60
70
80
90
100
Aware ADS Use ADS % Using
Young(<36)
Middle(36-50)
Old (>50)
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Awareness and Use of ADS by not-Productive PhD
Astronomers
0
10
20
30
40
50
60
70
80
90
100
Aware ADS Use ADS % Using
Young(<36)
Middle(36-50)
Old (>50)
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Average Time Spent Reading Per Article by
Astronomers• U.S. astronomers (n=306) average 36 minutes• Non-U.S. astronomers (n=83) average 43 minutes
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Source of Reading by Astronomers
0
5
10
15
20
25
30
U.S.
Non-U.S.
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Tenopir and King, Communication Patterns of Engineers, NY: IEEE/Wiley, 2004
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Use and Users of Electronic Use and Users of Electronic Library Resources: An Library Resources: An Overview and Analysis of Overview and Analysis of Recent Research Studies Recent Research Studies www.clir.org/pub/reports/puwww.clir.org/pub/reports/pub120/pub120.pdfb120/pub120.pdf
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Patterns of Journal Use by Faculty at Three Diverse Universities. October 2003http://www.dlib.org/dlib/october03/king/10king.html
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Future Studies
• Pediatricians
• University faculty and students in Australia
• University faculty and students in Finland
• Scientists in Chile and Brazil
• Tenopir & King surveys also being replicated in Cuba and Argentina