Differing Goals of Salmon Management on the Skeena River

1977 ◽  
Vol 34 (1) ◽  
pp. 64-72 ◽  
Author(s):  
Ray Hilborn ◽  
Carl J. Walters
Keyword(s):  
Decision Analysis ◽  
Interest Groups ◽  
Analysis Tool ◽  
Management Process ◽  
Multiattribute Utility ◽  
Utility Analysis ◽  
Analysis Technique ◽  
Skeena River ◽  
Multiattribute Utility Analysis ◽  
Conflicting Goals

In this paper we describe the use of a specific decision analysis tool, multiattribute utility analysis, to investigate conflicting goals in the management of salmon on the Skeena River. We used this technique to determine the preferences of 10 individuals representing several interest groups and different management agencies. It is shown how individuals differ in their preferences, how conflicts can be identified, and how decision analysis can be used to refine an individual's understanding of his preferences. Individuals assessed possible outcomes of different alternative enhancement proposals using two techniques, the decision analysis technique and an intuitive approach. These two methods produced different results. The use of these techniques in the management process is discussed.

scholarly journals A Utility Function for Examining Policy Affecting Salmon on the Skeena River

1977 ◽  
Vol 34 (1) ◽  
pp. 49-63 ◽  
Author(s):  
Ralph L. Keeney
Keyword(s):  
Interest Groups ◽  
Utility Function ◽  
Utility Functions ◽  
Multiple Objectives ◽  
Utility Model ◽  
Multiattribute Utility ◽  
Utility Models ◽  
Constructive Discussion ◽  
Skeena River ◽  
Comparative Examination

The interests of many groups, some with multiple objectives, are important to include in evaluating strategies affecting salmon in the Skeena River. A multiattribute utility model is proposed for addressing these issues. Two first-cut utility functions are assessed using the preferences of two individuals familiar with the problem. These utility functions provide a basis for constructive discussion to arrive at a reasonable utility function for examining alternative policies. Two unique features of this study are the explicit focus on value tradeoffs and equity considerations among interest groups, and a comparative examination of the two first-cut multiattribute utility models. This examination indicates the range of fundamental preferences which can be captured using multiattribute utility functions and illustrates the potential of the theory for conflict illumination and resolution.

Disassembly Process Planning Tradeoffs for Product Maintenance

2010 ◽  
Author(s):  
Sara Behdad ◽  
Deborah Thurston
Keyword(s):  
Linear Programming ◽  
Heating System ◽  
Solar Heating ◽  
Multiattribute Utility ◽  
Utility Analysis ◽  
Disassembly Sequence Planning ◽  
Disassembly Process ◽  
Disassembly Sequence ◽  
Multiattribute Utility Analysis ◽  
Disassembly Time

The problem addressed in this paper is disassembly sequence planning for the purposes of maintenance or component upgrading, which is an integral part of the remanufacturing process. This involves disassembly, component repair or replacement, and reassembly. Each of these steps incurs cost as well as the probability of damage during the process. This paper presents a method for addressing these tradeoffs, as well as the uncertainty associated with them. A procedure for identifying the best sequence of disassembly operations for maintenance and/or component upgrade is presented. It considers both disassembly and reassembly costs and uncertainties. Graph-based integer linear programming combined with multiattribute utility analysis is employed to identify the best set of tradeoffs among (a) disassembly time (and resulting cost) under uncertainty, (b) the probability of not incurring damage during disassembly, (c) reassembly time (and resulting cost) and (d) the probability of not incurring damage during reassembly. An example of a solar heating system is used to illustrate the method.

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