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Designing Collection Experiences: Objectives

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Workshop presented November 12, 2013 in Waterloo, Iowa. Setting objectives for collection age, size, and annual additions. How these factors are related, so that changing any one of them changes both …

Workshop presented November 12, 2013 in Waterloo, Iowa. Setting objectives for collection age, size, and annual additions. How these factors are related, so that changing any one of them changes both the others.


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  • 1. Designing Collection Experiences: 6. Objectives Roy Kenagy rjkenagy@netins.net www.whatwouldranganathando.org November 12, 2013 Waterloo Public Library
  • 2. All you need to know about setting collection objectives
  • 3. In a stable collection, which means:
  • 4. Policy Assumptions Fun with actuarial science
  • 5. Average Life Expectancy Population Size Entrants per Time Unit
  • 6. Expectation of Life for a stable population Average Life Expectancy Entrants per Time Unit Population Size Entrants per Time Unit Population Size Average Life Expectancy Population Size Average Life Expectancy Entrants per Time Unit Average Life Expectancy Entrants per Time Unit Population Size Entrants per Time Unit 700 10 70 Population Size 700 10 Average Life Expectancy 70 Population Size Average Life Expectancy Entrants per Time Unit 70 10 700
  • 7. Weeding Age, Collection Size, and Items Added Average Weeding Age Annual Items Added Collection Size Annual Items Added Collection Size Average Weeding Age Collection Size Average Weeding Age Annual Items Added Average Weeding Age Annual Items Added Collection Size Annual Items Added Collection Size Average Weeding Age 700 10 70 700 10 70 Collection Size Average Weeding Age Annual Items Added 10 70 700
  • 8. Other Expectation of Life Applications Average Days in Loan Period Average Shelving TurnaroundTime Average Items Out Average Daily Circulation Average Items To Be Shelved Average Daily Circulation Average Interlibrary Loan TurnaroundTime Average Items in Request File Average Loans per Day
  • 9. Policy Assumptions for Rhizome Objectives • • • • • Median age Collection size Steady-state snapshots Annual iterations Supply-Demand Equality
  • 10. Multiple Objectives – Exercise (1)
  • 11. Multiple Objectives – Exercise (2)
  • 12. Multiple Objectives (1) - Answers
  • 13. Multiple Objectives (2) – Answers
  • 14. “Unto every one that hath shall be given, and he shall have abundance; but from him that hath not shall be taken away even that which he hath.” — Matthew 25:29