Comparisons of aggregation procedures for interaction data: An illustration using a college student international flow table

Various approaches for developing regional schemes on the basis of geographic interaction data are discussed, using a 46 × 46 international flow table of college students as an example. The hierarchical clustering procedure employed by Masser and Brown to study movement data for London and Liverpool is compared with that utilized by Slater to analyze internal migration in several nations and is found to be more successful in the sense of explained interaction, a criterion Masser and Brown maximize in a stepwise—not necessarily optimal—manner. Slater's method, however, appears to be less subject to chaining—the sequential growth of a cluster— and more productive of distinct subgroups. It can also be interpreted as the fitting of a tree structure to a dissimilarity matrix. Both techniques are shown to yield highly significant functional regions, by comparing their results with those obtained through a large number of random partitionings of the 46 nations. The substantial value of the Ford-Fulkerson network flow algorithm in optimal partitioning and hierarchical clustering is discussed. This algorithm can also be used to define nodal in- and out-migration regions—i.e. collections of nations that have fewer people entering or leaving them as a whole than their nodal nations. To determine functional regions, the flow table is first doubly-standardized to have all row and column sums equal. Nodal regions—which cannot be hierarchically ordered—are found through study of the unadjusted flows themselves. Political, linguistic and geographic influences explain many of the international groupings obtained.     

Squatting and urban renewal: the interaction of squatter movements and strategies of urban restructuring in Berlin

Squatting as a housing strategy and as a tool of urban social movements accompanies the development of capitalist cities worldwide. We argue that the dynamics of squatter movements are directly connected to strategies of urban renewal in that movement conjunctures occur when urban regimes are in crisis. An analysis of the history of Berlin squatter movements, their political context and their effects on urban policies since the 1970s, clearly shows how massive mobilizations at the beginning of the 1980s and in the early 1990s developed in a context of transition in regimes of urban renewal. The crisis of Fordist city planning at the end of the 1970s provoked a movement of "rehab squatting" ('Instandbesetzung'), which contributed to the institutionalization of "cautious urban renewal" ('behutsame Stadterneuerung') in an important way. The second rupture in Berlin's urban renewal became apparent in 1989 and 1990, when the necessity of restoring whole inner-city districts constituted a new, budget-straining challenge for urban policymaking. Whilst in the 1980s the squatter movement became a central condition for and a political factor of the transition to "cautious urban renewal," in the 1990s large-scale squatting — mainly in the eastern parts of the city — is better understood as an alien element in times of neoliberal urban restructuring.     

Managerial time constraints and young worker productivity: Natural experiments with NFL rookies

The 2011 National Football League lockout and movement of the 2014 draft to a later date compressed the off‐seasons preceding the 2011 and 2014 seasons, exogenously tightening time constraints within which managers—head coaches and their staffs—engage in short‐run training of players. We exploit these natural experiments to investigate how this impacted the productivity of young workers (National Football League rookies). Results estimated for a sample of over 1,500 rookies support hypotheses emanating from an economic model of worker training time allocation and indicate reduced productivity along several dimensions. Survival analysis shows evidence of shorter player career durations along certain lines, suggesting longer term consequences.     

(Under)Mining local residential property values: A semiparametric spatial quantile autoregression

Rock mining operations, including limestone and gravel production, have considerable adverse effects on residential quality of life due to elevated noise and dust levels resulting from dynamite blasting and increased truck traffic. This paper provides the first estimates of the effects of rock mining—an environmental disamenity—on local residential property values. We focus on the relationship between a house's price and its distance from a nearby rock mine. Our analysis studies Delaware County, Ohio, which, given its unique features, provides a natural environment for the valuation of property‐value‐suppressing effects of rock mines on nearby houses. We improve upon the conventional approach to evaluating adverse effects of environmental disamenities based on hedonic house price functions. Specifically, in the pursuit of robust estimates, we develop a novel (semiparametric) partially linear spatial quantile autoregressive model which accommodates unspecified nonlinearities, distributional heterogeneity, as well as spatial dependence in the data. We derive the consistency and normality limit results for our estimator as well as propose a consistent model specification test. We find statistically and economically significant property‐value‐suppressing effects of being located near an operational rock mine which gradually decline to insignificant near‐zero values at roughly a 10‐mile distance. Our estimates suggest that, all else equal, a house located a mile closer to a rock mine is priced, on average, at about 2.3–5.1% discount, with more expensive properties being subject to larger markdowns.     

Markets for Organs to Reinforce Altruism

The suggestion that a market in human organs should be allowed to enhance the supply of kidneys, corneasand other human parts given for transplant is likely to be met by outrage among economists and doctors alike. Marvin Brams, Professor of Economics at the University of Delaware, reveals how a market in organs can stimulate supply, relieve suffering and save lives.     

Louis Post as a Carpetbagger in South Carolina: Reconstruction as a Forerunner of the Progressive Movement

Abstract . Did the reforming zeal of the Carpetbaggers have much influence upon men who would later be involved in the Progressive movement? The experience of Louis F. Post, who served as a Carpet-bagging stenographer in South Carolina and who later became editor of the Chicago Public and Assistant Secretary of Labor in the Woodrow Wilson administrations, seems to indicate a continuity of interest not only in reform, but in racial equality. Post's unpublished autobiography, his article on his Carpetbagging experience which appeared in the Journal of Negro History and newspaper dispatches he wrote for the Hackettown Gazette in 1871 and 1872 provide the major pieces of evidence that the Carpetbaggers’ experience—often written off as job grabbing by political hacks eager to capitalize on the defeat of the South in the Civil War—was a wellspring of the Progressive movement in America.     

Social Ecological Economics: Understanding the Past to See the Future

The attempt to provide insight into the interactions between the economy and the environment has been an on‐going struggle for many decades. The rise of Ecological Economics can be seen as a positive step towards integrating social and natural science understanding by a movement that aims to go beyond the confines of mainstream economics towards a progressive political economy of the environment. However, this vision has not been shared by all those who have associated themselves with Ecological Economics and there has been conflict. An historical analysis is presented that shows the role of mainstream theory in delimiting the field of environmental research. The argument is put forward that rather than employing a purely mechanistic objective empirical methodology there is a need for an integrating interdisciplinarity heterodox economic approach. In order to distinguish this approach—from the more mainstream multidisciplinary linking of unreconstituted ecological and economic models—the name Social Ecological Economics is put forward as expressing the essential socio‐economic character of the needed work ahead.     

Field Perspectives on the Causes of Low Employment Among Less Skilled Black Men

This article presents findings from a unique survey that assessed explanations for low black male employment by questioning participants in a low skill labor market. Black men identified barriers to hiring—including felony convictions, drug testing, low skill levels, and bias—as major reasons for their non‐employment. Employers believed black male applicants were less likely to have the desired interpersonal skills and work ethic, and that they were less likely to pass pre‐employment drug tests.     

中央企业发展定位与管理策略探讨

近年来,按照现代企业制度的要求,我国中央企业国有资产管理取得了巨大的成效,但在中央企业的角色定位与功能发挥上仍存在较大的问题。在中央企业国有资产管理和企业发展中,应当建构起既面向市场机制又服务国家战略的中央企业角色定位,对竞争性行业的中央企业和垄断性行业的中央企业区别对待,分别采取不同的管理方式和考核标准,以实现中央企业资源优势和社会责任的统一,进而达到中央企业的发展和社会发展同步。     

Followership and the Samurai

Japan's samurai were a class of followers—their very name samurai originally meant those who served. The current study examines the colorful nature and significance of followership in the unique cultural setting of Japan's Edo or Tokugawa period (1603–1868), and how the relationship between samurai and their lords was affected by bushido—the way of the warrior. It also considers the relevance of samurai‐style followership to today's world.     

Segregated Networks in the City

Segregation has been one of the most persistent features of urban life and, accordingly, one of the main subjects of enquiry in urban studies. Stemming from a tradition that can be traced back to the Chicago School in the early twentieth century, social segregation has been seen as the natural consequence of the social division of space. Such naturalized understanding of segregation as ‘territorial segregation' takes space as a surrogate for social distance. We propose a shift in the focus from the static segregation of places—where social distance is assumed rather than fully explained—to how social segregation is reproduced through embodied urban trajectories. We aim to accomplish this by exploring the spatial behaviour of different social groups as networks of movement that constitute opportunities for co‐presence. This alternative view recasts the original idea of segregation as ‘restrictions on interaction' by concentrating on the spatiality of segregation potentially active in the circumstances of social contact and encounters in the city. This approach to segregation as a subtle process that operates ultimately through trajectories of the body is illustrated by an empirical study in a Brazilian city.     

The Single Tax Movement and Progressivism, 1880-1920*

Abstract . Henry George's Single Tax movement and the Progressive movement in the United States were inter-related. After the publication of Progress and Poverty a political movement developed around George. It failed, partly because George was a poor politician although he had proved a master-publicist, partly because he aroused a formidable opposition. Nevertheless the single taxers did contribute to progressive reform a specific plan for manipulating the environment in a Social Darwinistic way. George's philosophy also rejected socialism in favor of a reformed and purified capitalism—perhaps the most important theme in 20th century reform thought in America. Moreover, the Single Tax movement contributed to the democratic reform movement such leaders as Tom L. Johnson, Brand Whitlock, Louis F. Post, Frederic C. Howe, George L. Record, Newton D. Baker and Franklin K. Lane.     

Zero-intelligence agents looking for a job

We study a simple agent-based model of a decentralized matching market game in which agents (workers or job seekers) make proposals to other agents (firms) in order to be matched to a position within the firm. The aggregate result of agents interactions can be summarised in the form of a Beveridge curve, which determines the relationship between unmatched agents, unemployed job seekers and vacancies in firms. We open the black box of matching technology, by modelling how agents behave (make proposals) according to their information perception. We observe more efficient results—in the form of a downward shift of the Beverage curve in the case of simple zero-intelligent agents. Our comparative statics indicate that market conditions, such as the heterogeneity of agents’ preferences, will also shift the Beveridge curve downwards. Moreover, market thickness affects movement along the Beverage curve. Movement right-down along the curve if there is an increasing number of agents compared to positions within firms. Furthermore, we show that frictions in re-matching, such as commitment to a match, could be another factor shifting the Beveridge curve toward the origin.     

Training for the twenty-first century in a state psychiatric facility

This article analyzes some of the major factors affecting the content and process of training paraprofessionals in state-run psychiatric hospitals. It reflects on the challenge of providing the relevant knowledge and skills for staff members with limited or no clinical experience yet who are expected to provide the highest quality of care in a rapidly changing field. The author uses her own experience at the only state-run psychiatric hospital in Delaware to present ideas of how to create a learning environment for paraprofessionals that could be transferred to similar facilities.     

Really useful knowledge? Critical Management Education in the UK and the US

This article reviews the Critical Management Education (CME) literature produced since 1995 and compares its development in the United Kingdom with that of the United States. It explores the relationship between CME, as an academic field, and that of Critical Management Studies (CMS), the wider movement that deploys critiques drawn from sociology and political science perspectives. In the UK, the origins of CME are in established debates about utilitarian versus liberal education and in radical adult education theory—quite separate from the CMS movement. In the US however, the article argues that business schools and the academy are sites that the CMS is attempting to colonise and CME cannot, in that context, be separated from the CMS project.     

Alternatives to Resistance? Comparing Depoliticization in Two British Environmental Movement Scenes

Processes of politicization and depoliticization are increasingly studied in relation to urban contexts, and cities have been depicted as incubators of social movements. What has been largely ignored is why, in some cities, forces of politicization or depoliticization are stronger than in others. To address this question, this article compares two British cities—Manchester and Bristol—which have historically been central hubs of environmental resistance, but currently face similar depoliticizing forces: austerity, anti-squatting laws, police repression and activists’ disillusion with environmentalism. Curiously, these conditions have had very different impacts on the two environmental scenes. In Manchester they have caused environmental resistance to become replaced almost entirely by non-confrontational ‘alternatives’. In Bristol alternatives have emerged that tend to be in synergy with environmental resistance. The comparison thus suggests that Bristol is more conducive to maintaining environmental resistance under depoliticizing conditions. Findings suggest that differences can be attributed to features of the physical urban environment, including city size. Historically, these differences were not decisive. Yet, after a period of dwindling environmentalist energy in the UK, the number of environmentalist hubs has been reduced. This has prompted a reputational snowball that increasingly concentrates environmental resistance in the one city that best insulates the environmental movement from broader depoliticizing forces.     

The transition from individual to collective labour relations in China

The article discusses the current transformation of Chinese labour relations. The Labour Contract Law implemented in 2008 provided the legal framework for China's adjustment to individual labour relations; it also hastened the evolution of collective labour relations. The article discusses how two different aspects of the Chinese labour movement—top‐down and bottom‐up—have been interacting. Implications are drawn from the experience of the strike wave of the summer of 2010. It is argued that further legal intervention could facilitate the development of China's labour policy, but that the reform of collective labour law will require the strengthening of the collective rights of workers and the nurturing of institutions which can focus collective consciousness and organisation.     

Traders as sustainability governance actors in global food supply chains: A research agenda

Corporate actors are rapidly gaining ground as nontraditional forms of authority that shape sustainability governance efforts in global food supply chains. This paper highlights the critical, but underresearched role of traders—companies whose core business lies in the movement and exchange of agricultural commodities between producers and manufacturers—in linking corporate sustainability ambitions to on-the-ground impacts. Drawing on a systematic analysis of the major transnational corporations trading cocoa, coffee, and palm oil, we present advantages and potential pitfalls of relying on traders as implementers of sustainability governance and outline a future research agenda that focuses on producer-level impacts, changes in supply chain organization and power dynamics, and traders' interactions with state and other nonstate actors. At the intersection of supply chain management, political economy, geography, and global governance, research on traders as key sustainability governance actors also provides novel opportunities for interdisciplinary work and stakeholder engagement.     

Forecasting public school enrollment

Forecasting annual September enrollment is one of the most difficult problems confronting public school administrators, because the average school district does not maintain an information file on interdistrict household migration. This paper describes a statistical prediction model for annual September enrollment which requires only school district data routinely collected. A numerical example of the forecasting model for each elementary and secondary grade is presented using statistical information for a representative Delaware school district.