Future DiscussionsFuture Discussions1. Search Internet Major Resources

– Contact author for more information2. Funding from Donors – Grants

– USAID, SIDA -- RFP – Requests for Proposals3. Preparing article for Journal peer-review

– AEA, AMA4. Conservation Tillage –

– Whole practice - application in Ethiopia5. Discussion on using SAS – statistical analysis

– Experimental Design– Linkage current course experience– Use existing data– Project Objectives & Setup of experiments

6. Instrumentation– Identify needs – accuracy vs precision– Stress strain measurement – tillage

• Shear measurement, cone index, draft measurement, bulk densities– Temperature measurement– Research Measurement Errors

7. Ergonomic implements – implement standardization• Engineering Society (1997)

8. Role in watershed management – integrated approach w/ sustainability1. Water-logged

• Dryland crop production

Today is 2/5 – I leave on Thursday 2/8 at 2 pm

Future DiscussionsFuture Discussions1. Search Internet Major Resources

– Contact author for more information2. Funding from Donors – Grants

– USAID, SIDA -- RFP – Requests for Proposals3. Preparing article for Journal peer-review

– AEA, AMA4. Conservation Tillage –

– Whole practice - application in Ethiopia5. Discussion on using SAS – statistical analysis

– Experimental Design– Linkage current course experience– Use existing data– Project Objectives & Setup of experiments

6. Instrumentation– Identify needs – accuracy vs precision– Stress strain measurement – tillage

• Shear measurement, cone index, draft measurement, bulk densities– Temperature measurement– Research Measurement Errors

7. Ergonomic implements – implement standardization• Engineering Society (1997)

8. Role in watershed management – integrated approach w/ sustainability1. Water-logged2. Dryland crop production

Today is 2/7 – I leave on Thursday 2/8 at 2 pmToday @ 4 pm – Seminar at USAID Center

Today’s DiscussionToday’s Discussion• Instrumentation

– Identify needs – accuracy vs precision

– Stress strain measurement – tillage• Shear measurement, cone index, draft

measurement, bulk densities

– Temperature measurement– Research Measurement Errors

Book

Indirect Measurement

Measuring Strain – DefinitionIndirect Measurements - Sensors

Gage mounting

Gage

Physical Arrangement

Input 5-10V, Output 5-20 ma

Force Measurementpage 57-61

Load Cell – note range

2n – 3bit=8, 8bit=256, 16-bit=65536

Resolution of 3 bits=8 levels

2n – 3bit=8, 8bit=256, 16-bit=65536

D/A page 13 – Strain gage

Pressure

Torque measurement

Mounting Gages

Temperature - $59 – 529b