A Synthesis of Aggregation Methods for Multifacility Location Problems: Strategies for Containing Error

When solving a location problem using aggregated units to represent demand, it is well known that the process of aggregation introduces error. Research has focussed on individual components of error, with little work on identifying and controlling total error. We provide a focussed review of some of this literature and suggest a strategy for controlling total error. Consideration of alternative criteria for evaluating aggregation schemes shows that the method selected should be compatible with the objectives of the analyses in which it is used. Experiments are described that show that two different measures of error are related in a nonlinear way to the number of aggregate demand points (q), for any value of the number of facilities (p). We focus on the parameter q/p and show that it is critical for determining the expected severity of the error. Many practical implementations of location algorithms operate within the range of q/p where the rate of change of error with respect to q/p is highest.     

Citizenship and Belonging in the Rural Fringe: A Case Study of a Hindu Temple in Sydney,Australia

Despite Australian multicultural policy that asserts the right of all citizens to maintain and practice their religion, formal citizenship has not guaranteed the welcome or belonging of migrant religious groups at the neighbourhood scale. This is most starkly reflected in contests over the inclusion of minority religious spaces in the Australian landscape, which increasingly take place in the rural–urban fringe of metropolitan areas. This work examines the controversy over a proposed Hindu temple in metropolitan Sydney and reveals insights into the way that rural–urban fringe space is imagined, understood and experienced by land use planners, residents and temple members. Critical discourse analysis of policy documentation along with interviews reveals that land use planners circumscribe belonging in the landscape through the use of zoning ordinances and design controls, local residents mark the boundaries of white privilege through narratives of heritage and cultural difference and temple members claim rights to citizenship based on assertions of sameness.     

Between Large-N and Small-N Analyses: Historical Comparison of Thirty Insurgency Case Studies

Abstract

The authors study the 30 insurgencies occurring between 1978 and 2008 using four methods crossing the qualitative/quantitative divide. The four approaches are narrative, bivariate comparison, comparative qualitative analysis, and K-medoids clustering. The quantification of qualitative data allows the authors to compare more cases than they could “hold in their heads” under a traditional small-n qualitative approach, improving the quality of the overall narrative and helping to ensure that the quantitative analyses respected the nuance of the detailed case histories. Structured data-mining reduces the dimensionality of possible explanatory factors relative to the available observations to expose patterns in the data in ways more common in large-n studies. The four analytic approaches produced similar and mutually supporting findings, leading to robust conclusions.