An application of linear feature selection to estimation of proportions

Let X be a random n-vector whose density function is given by a mixture of known multivariate normal density functions where the corresponding mixture proportions (a priori probabilities) are unknown. We present a numerically tractable method for obtaining estimates of the mixture proportions based on the linear feature selection technique of Guseman, Peters and Walker (1975).     

Linking inventory efficiency,productivity and responsiveness to retail firm outperformance: empirical insights from US retailing segments

This paper establishes an empirical model linking a retail firm’s inventory management effectiveness to superior competitive operational performance for specific product-line retail segments. Using 16?years of US retail firm financial data from the COMPUSTAT Fundamentals database across 12 distinct competitive retailing segments, we develop and test a time-series model that links several inventory management execution measures to the competitive operational outperformance of retail firms. The analysis presented provides strong evidence that measures of inventory management performance are not ‘one size fits all’ for the retail industry, and helps to explain why extant research has had difficulty linking inventory control policy effectiveness to operational performance advantages in retailing. We discuss the implications of these empirical findings on the study of inventory policy execution, and offer some guidance for further research.     

A culture of whiteness: How integration failed in cities,suburbs, and small towns

As America's neighborhoods have become more racially diverse in the last half century, are these shared spaces fulfilling the “promise of integration”? In this study, I review the literature on desegregation as it occurs in urban, suburban, and rural places, illuminating how a culture of whiteness works in each of these types of places to reproduce racial domination. The literature on multiethnic urban areas demonstrates how a culture of whiteness reframes gentrification as ‘revitalization’ and nostalgia, which result in social control and cultural displacement of non-white residents. In suburban places, I draw out the ways a culture of whiteness is expressed as ‘niceness’ and ‘governmentality’, resulting in symbolic exclusion and forced assimilation of people of color. Finally, in rural places, a culture of whiteness uses narratives of ‘pollution’ and ‘parasitism’ to understand often low-income migrants of color, which renders them invisible and reproduces their structural disadvantage in the community. Revealing the subtle and obscure mechanisms through which a culture of whiteness reproduces racial domination in diverse places ultimately provides the key to their undoing and opens the door to the promise of integration.     

Grade level differences in school satisfaction

Despite evidence that children and adolescents are much more dissatisfied with the student role than adults are with the worker role, sociologists and psychologists have devoted much more effort to examining adult age differences in job satisfaction than grade level differences in school satisfaction. In this study, scores from a 3-item school satisfaction measure were analyzed via a 12 (Grade Level) by 5 (Ethnicity) by 2 (Gender) ANOVA. Twenty-five percent of the 431 330 public school students surveyed in the state of Arizona endorsed none of the school satisfaction items. Grade level was nonlinearly related to school satisfaction. School satisfaction decreased over grades 1–8 and did not vary across grades 9–12. Ethnicity and gender did not moderate the grade level-school satisfaction relation.     

Bureaucracy in Three Different Worlds: The Assumptions of Failed Public Sector Reforms in Korea

Why is it so difficult to implement Western reform programs in Asian bureaucracies? To address this question, this study explores cultural aspects of national bureaucracies. A government bureaucracy is shaped by its cultural and historical context, and this paper specifically focuses on contrasting models of government bureaucracy in the USA, Korea, and Germany. Differences between the models are explained by examining both internal operations as well as the relative relationships of the state to society. Based on this, the incompatible assumptions of Korean reformers are examined. This study is useful for developing countries engaged in Western-style bureaucratic reform.     

Social Work as a Social Institution

This paper discusses trends in social work in the last twenty-fiveyears. Within the broad theme of social work as a social institution,more detailed attention is focused on: services for childrenand elderly people; manageralism; and social work research andevaluation. Processes of secularization, professionalism andmanageralism have weakened the impetus for social reform. Thishas sharpened dilemmas for social work in balancing benefitsfor service users and public involvement with tight state controland regulation.     

The voices people read: Orthography and the representation of non-standard speech

Combining features of matched guise tests with sociolinguistic interviewing and oral performance, this study investigates the social meanings carried by non-standard orthographies. Participant evaluations of the personas represented by non-standard orthographies showed that people connected orthography to social identities. Specifically, we found that people uncritically and spontaneously read non-standard orthographies as indices of low socioeconomic status. When we asked participants to read texts out loud, we found marked shifts in their reading performances of texts in standard versus non-standard orthographies. Through a case study analysis of participants' readings and attitudes, we identify two kinds of stances taken by participants towards stigmatized identities indexed by non-standard orthographies. Finally, we use these case studies to argue for the necessity of contextually rich qualitative research methods for the study of language attitudes.