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Articles 1 - 6 of 6
Full-Text Articles in Business
Spreadsheet-Based Gis Models, Roger Blake, Jeffrey Keisler, Janet Wagner
Spreadsheet-Based Gis Models, Roger Blake, Jeffrey Keisler, Janet Wagner
Jeffrey Keisler
Geographic Information Systems (GIS), which are computer-based systems that allow decision makers to incorporate geographically based data into their analyses, are widespread and powerful tools in many business and scientific settings today. In this paper, we present a tutorial discussing ways in which GIS functionality can be implemented within the spreadsheet environment. We show the straightforward and natural analogy between several GIS functions with spreadsheet functions, particularly for raster based data. We present two realistic examples meshing OR/MS methods with GIS methods --- an integration which is greatly enhanced by the “remarkable development platform” provided by spreadsheets. We discuss the …
The Value Of Refining Buy-Up Alternatives For Portfolio Decision Analysis, Jeffrey Keisler
The Value Of Refining Buy-Up Alternatives For Portfolio Decision Analysis, Jeffrey Keisler
Jeffrey Keisler
Portfolio project selection and in particular portfolio decision analysis (DA) approaches at their most basic rely on a simple economic notion – rank investments in order of value gained per dollar spent and fund them in this order until the budget is spent. But the quality of the recommendations generated by such an approach is only as good as the quality of the assumptions about projects that are used. In this paper we consider how much effort is worth expending to improve definition of alternatives at the project level.
When To Consider Synergies In Project Portfolio Decisions, Jeffrey Keisler
When To Consider Synergies In Project Portfolio Decisions, Jeffrey Keisler
Jeffrey Keisler
Portfolio decision analysis often evaluates R&D projects one at a time and uses these evaluations as the basis for profit-maximizing funding decisions. This approach can overlook strategic fit between projects. In theory, it is possible to identify synergies between projects and then fund the set of projects that maximize profit. In practice, the time and attention required to identify all such synergies may be prohibitive. Several analytic strategies are applied to simulated project portfolios with varying characteristics, using a matrix representation of interdependent portfolio elements. The results illustrate the potential impact on portfolio profit accruing from various means of considering …
Uncertainty, Technical Change, And Policy Models, Erin Baker, Leon Clarke, Jeffrey Keisler, Ekundayo Shittu
Uncertainty, Technical Change, And Policy Models, Erin Baker, Leon Clarke, Jeffrey Keisler, Ekundayo Shittu
Jeffrey Keisler
Both climate change and technical change are uncertain. In this paper we show the importance of including both uncertainties when modeling for policy analysis. We then develop an approach for incorporating uncertainty of technical change into climate change policy analysis. We define and demonstrate a protocol for bottom-up expert assessments about prospects for technologies. We then describe a method for using such assessments to derive a probability distribution over future abatement curves, and to estimate random return functions for technological investment in different areas. Finally, we show how these analytic results could be used in a variety of energy-economic models …
Decision Models For Foreclosed Housing Acquisition And Redevelopment: A University Of Massachusetts Multi-Campus Collaborative Project - Processes And Findings To Date, Michael P. Johnson Jr., Jeffrey Keisler, Senay Solak, David Turcotte, Rachel B. Drew, Armagan Bayram, Emily Vidrine
Decision Models For Foreclosed Housing Acquisition And Redevelopment: A University Of Massachusetts Multi-Campus Collaborative Project - Processes And Findings To Date, Michael P. Johnson Jr., Jeffrey Keisler, Senay Solak, David Turcotte, Rachel B. Drew, Armagan Bayram, Emily Vidrine
Jeffrey Keisler
The recent housing foreclosure crisis has had devastating impacts on individuals, communities, organizations and government. In response, several community development corporations (CDCs) have sought new ways to assist neighborhoods suffering from the myriad effects of high foreclosures, including neighborhood instability, increased vandalism and crime, lower property values, and economic disinvestment. This research project focuses on activities of community-based organizations that acquire and redevelop foreclosed properties to support neighborhood stabilization and revitalization. However, the costs of pursuing this strategy far exceed the resources available to typical CDCs. Thus, our project seeks to solve the following decision problem: What subset of a …
An Invitation To Portfolio Decision Analysis, Ahti Salo, Jeffrey Keisler, Alec Morton
An Invitation To Portfolio Decision Analysis, Ahti Salo, Jeffrey Keisler, Alec Morton
Jeffrey Keisler
Portfolio Decision Analysis (PDA) – the application of decision analysis to the problem of selecting a subset or portfolio from a large set of alternatives – accounts for a significant share, perhaps the greater part, of decision analysis consulting. By construction, PDA has a sound theoretical and methodological basis, and its ability to contribute to better resource allocation decisions has been demonstrated in numerous applications. This book pulls together some of the rich and diverse efforts as a starting point for treating PDA as a promising and distinct area of study and application. In this introductory chapter, we first describe …