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521.
Jack Katz 《The American Sociologist》2012,43(1):125-134
In the process of eating, everyone cooks, personally combining ingredients at hand to enhance appetite; but few are called cooks. From this mundane example we can take a new approach to the study of material status. A sociological formula that credits capital as opposed to labor with the source of advantage will obscure the dynamics shaping material status. Drawing on a study of the Hollywood area of Los Angeles, I indicate how, at the lowest and highest levels, people make their material status by innovatively combining what they have, as passively available resources, and what they do in the nature of hourly or task paid labor. The shift of theory from nouns, like labor and capital, to the active and passive verbs, “doing” and “having,” leads to a shift in the search for explanations of status differences. As in cooking, the transformative tricks critical for producing savory results are not simply in the recipes handed down from generation to generation but in those cooked up, in the innovative interactions in relating working for pay and the exploitation of ongoing relations. 相似文献
522.
523.
Theory and Decision - We study decision under uncertainty in an Anscombe–Aumann framework. Two binary relations characterize a decision-maker: one (in general) incomplete relation, reflecting... 相似文献
524.
Jack K. Day Jessica N. Fish Arnold H. Grossman Stephen T. Russell 《Journal of research on adolescence》2020,30(Z2):418-430
Gay‐Straight Alliances (GSA) and school policies focused on support for lesbian, gay, bisexual, transgender, and queer/questioning youth may reduce bias‐based bullying and enhance social supports in schools. Using multivariate regression, we tested the relationship between youth reports of the presence of GSAs and LGBTQ‐focused policies, independently and mutually, with experiences bullying and perceived support (n = 1,061). Youth reported higher classmate support in the presence of GSAs and higher teacher support in the presence of LGBTQ‐focused policies; the presence of both GSAs and LGBTQ‐focused policies was associated with less bullying and higher perceived classmate and teacher support. The findings indicate that GSAs and LGBTQ‐focused policies are distinctly and mutually important for fostering safer and more supportive school climates for youth. 相似文献
525.
Keisuke Hirano Jack R. Porter 《Econometrica : journal of the Econometric Society》2003,71(5):1307-1338
In certain auction, search, and related models, the boundary of the support of the observed data depends on some of the parameters of interest. For such nonregular models, standard asymptotic distribution theory does not apply. Previous work has focused on characterizing the nonstandard limiting distributions of particular estimators in these models. In contrast, we study the problem of constructing efficient point estimators. We show that the maximum likelihood estimator is generally inefficient, but that the Bayes estimator is efficient according to the local asymptotic minmax criterion for conventional loss functions. We provide intuition for this result using Le Cam's limits of experiments framework. 相似文献
526.
Jack Eaton 《LABOUR》1993,7(3):35-47
The article argues that there is a need for a new theory of production economics. The premise is that the only extant theory of production in orthodox discourse depends on the maximising model of human behaviour. Adam Smith's bifurcation of economic theory into the province of self-interest and that of justice also blocked off the potential for germinating a theory of production that would draw on motives other than self-interest. The foundations for such an approach have already been set out by Bray in a neglected study. He suggested that mathematical economics was held back, rather than advanced, by its bondage to static equilibrium analysis. 相似文献
527.
This paper reports on a study which attempted to identify the structure of executive information systems and evaluate their relationship to decision making. The study centered on answering the question: “Where and how do senior executives get their decision-making information?” The data, provided by five senior executives, were gathered by a variety of means which included personal interviews, questionnaires, and logs of the executives' incoming-information transactions for a two-week period. Our findings support beliefs that senior executives receive much information from the environment, that informal systems play a role equal to that of formal systems, and that computers do not provide much information directly to an executive. The study also found that internal information is important and that preferred sources and media vary with different decision roles. The authors suggest that the scope of MIS and DSS be broadened to match those information networks managers actually rely on in daily practice. 相似文献
528.
This paper describes a simulation study of the relative impact of different operating policies on performance of a hypothetical multistage production system that produces assembled products. The main objective of this study is to examine the impact of operating policy rules on system performance. Several performance criteria, including flow time and earliness and tardiness measures, were used to evaluate system performance. Results show that performance of the production system is significantly influenced by the operating policy rules, although the relative impact of the rules is dependent on the performance measure considered. Interactions between and among policy rules were also found to be important in several cases. Overall, the results indicate that much previous research in non-assembly systems can be generalized to assembly systems. Subject Areas: Scheduling, Material Requirements Planning, and Simulation. 相似文献
529.
This paper treats some of the important considerations in constructing an analytical model for the distribution of demand during lead time. It presents a formal model that can be developed along one of two lines. The first has order size and order intensity leading to a compound distribution of period demand, then period demand and lead time giving rise to a compound distribution of demand during lead time. The second has order intensity and lead time giving rise to a compound distribution of lead-time order intensity, then lead-time order intensity and order size leading to a compound distribution of demand during lead time. The paper also condenses the state of the art in a table and proposes some simple classification schemes that could help researchers extend that state of the art. 相似文献
530.
We present an analysis of setup cost reduction using the economic production quantity model. The objectives of the paper are to draw conclusions by investigating several classes of setup reduction functions and to provide a general solution procedure. We examine the trade-offs between reduced inventories and increased capital investment and show that given any hypothetical setup cost reduction function, we can determine whether the total relevant cost can be reduced and how the reduction is achieved. 相似文献