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.     

The Intellectual Internment of a Conflict: The Forgotten War in Northern Ireland

One of the most enduring ideas about the Northern Ireland conflict is that it has been rigorously studied. This is a myth. The stark absence of analysis of its military and international dimensions makes the conflict one of the least understood of modern times. Scholarly studies of Northern Ireland have been insulated from influences in the wider academic world by the dominance of hitherto unchallenged images about the crisis. These images support a dominant orthodoxy that has confined intellectual investigation of the 'Troubles' to Northern Ireland itself, sustaining a view that little of value can be gained from studying the military nature of the conflict. This orthodoxy is one to which, depressingly, the international relations community has been only too willing to contribute to justify its fear and neglect. Not only does this reflect poorly on academic practice but it has also helped to engender a dangerously distorted image of the conflict that bodes ill for the future.     

Asymmetric Entrant Locaiton with a Discrete Consumer Distribution: Spatial Price Discrimination Versus Mill Pricing

In this paper I examine the profit-maximizing locations of entrants. Suppose that firms practice spatial price discrimination and consumer locations are discrete, such as five equally spaced towns on a roadway. With completely inelastic consumer demand an entrant between two existing firms is often indifferent between the symmetric (central) location and a continuum of asymmetric (noncentral) locations. However, downward-sloping consumer demand often causes the entrant to strictly prefer either of two asymmetric locations to any other location. These results are very different from those found in mill-pricing (free-on-board or f.o.b.-pricing) models.     

A Political Explanation of Policy Selection: The Case of Urban School Reform

Amid the torrent of reform activity in urban school systems, some proposals fare better than others. The traditional technocratic presumption is that reforms are chosen for their educational merit. I suggest that, to the contrary, institutional incentives encourage urban policymakers to emphasize symbolic appeal. Data from a 1995 study of 57 urban districts are used to compare the fate of two school reforms. The more symbolically attractive reform was supported, proposed, and enacted much more widely, although neither research nor observer responses suggested its superiority.     

Redundancy, Third-Party Government, and Consumer Choice: HIV/AIDS Nonprofit Organizations in New York City

This article addresses two questions: (a)Why were so many new nonprofit organizations in New York City created to “fight AIDS?” and (b) What are some consequences of this phenomenon? Drawing on redundancy theory as a partial explanation, it also considers the role of racial and ethnic politics and the impact of government contracting on the formation and growth of community-based organizations. For clients, the effect has been paradoxical: financial support of a large number of organizations led to a complex and fragmented delivery system offering some clients a range of choices but decreasing access for those less able to navigate a complex system.     

Emplacing Current Trends in Feminist Historical Geography

In this article, the authors assess some of the major trends within anglophonic feminist historical geography appearing in the decade since Rose & Ogborn called for the development of an explicitly feminist approach to the subfield. In examining the 'geography' of feminist historical geographies, three main categories of scholarship are evident: a 'new' historical geography of North America, portions of which are informed by feminist theories and methods; a British school of feminist historical geography with a focus on the discipline of geography, geographical knowledges and colonialism/imperialism; and feminist historical geography interventions in cultural politics of space and place. A diversity of feminist methods and epistemologies appears across the literature. In an attempt to avoid a reading of these trends as better or worse approximations of historical 'progress', the authors conceptualize them as emplaced within a number of specific social and spatial contexts. Most recent work is concerned with the production of gender differences as they are worked through economic, political, cultural and sexual differences in the creation of past geographies. The continued need simply to write women into historical narratives and geographies, however, is also evident. The work of feminist historical geography questions and challenges geography's masculinist historical record.     

Viking age horse graves from Kaunas region (Middle Lithuania)

Balts' territories have one peculiarity—large amounts of horse bones are found in burial grounds. This phenomenon is typical to the Prussians (5th–11th centuries) and Lithuanians (Kaunas region 8th–11th centuries) Horse burials of the 8th–11th centuries reflect the archaeological culture of Middle Lithuania most significantly. Several horse burial types have been defined on the basis of individuals; osteological signs and the archaeological data of the horse remains. A typical horse grave is when the whole horse was buried. Sometimes only a head or a head with forelegs, or scattered horse remains are found in a burial. The large number of burial grounds with an abundance of horse graves testifies to a very expressive ritual of horse offering in the Balts' region. On the basis of the data obtained, we determined that mostly 4–10 year old horses were buried in the grounds of Middle Lithuania. From the bone measurements, it has been determined that the length of metacarpals ranges between 180 and 216 mm (the average length 193.1±0.99 mm); the length of metatarsals between 218 and 253 mm (average length 233.9±0.73 mm).These data demonstrate that horses of different types were buried in Marvelė and Veršvai burial grounds (wither height 120–136 cm). A certain number of the larger horses (wither height 136–144 and 153 cm; length of metacarpals 210–222 mm) might not have belonged to local breeds. We have come to the conclusion that the most similar horse skeletons (according to the osteometric data) were found in Latvia. Copyright © 2001 John Wiley & Sons, Ltd.