Régulation School and environment: Theoretical proposals and avenues of research

The article explores the relevance of a particular approach of the institutionalist movement, régulation theory, to deal with the relationship between the economy and the environment. Régulation theory, which appeared in France at the end of the 1970s, is mainly interested in macroeconomic issues. In contrast, until now it has tended to neglect environmental questions. By taking several key concepts of this theory (accumulation regime, mode of régulation, institutional forms), we have sought to assess its significance vis-à-vis the environmental field. More precisely, from the perspective of establishing an environmental regulationist theory, we propose considering the economic relation to the environment as the articulation of three forms: a transhistorical form, a general capitalist form and a specific capitalist form, the latter being variable in capitalist time and space. We give several illustrations of the variability of the relation to the environment, depending on the different accumulation regimes and the different modes of régulation. Two principal avenues of research are proposed: historical analyses for given economic areas, and comparative analyses relating in particular to different capitalist areas.     

配送计划的优化编制方法

讨论了在时间、距离和载重量等多种约束条件下，编制配送计划的优化方法。先给出配送问题的数学模型，并设计了一个带时间和距离约束条件的启发式算法来求解该模型，求得问题的近似解；然后再采用分枝定界法得到配送问题的最优解：最后，考查近似解与最优解在总的运行距离的相对误差，以此检验这个近似解的有效性。     

承包型CM模式与跨流域调水工程建设管理

在分析跨流域长距离调水工程特点的基础上,提出对大型跨流域调水工程采用承包型CM模式并分析其应用优点和条件。     

物流运输网络中的网络容量扩张成本效益均衡模型及算法研究

在给定一个单源单汇物流运输网络中，网络中的每条弧都有一个容量和运输时间的限制，研究了当网络的容量提高到指定水平，同时限制从网络中源点到汇点运输时间，应该如何对网络进行适当的扩张，减少网络的运输时间，同时使网络效益与预期效益尽可能的接近。     

Restricted maximum likelihood estimation under Eisenhart model Ill

For a balanced two-way mixed model, the maximum likelihood (ML) and restricted ML (REML) estimators of the variance components were obtained and compared under the non-negativity requirements of the variance components by L ee and K apadia (1984). In this note, for a mixed (random blocks) incomplete block model, explicit forms for the REML estimators of variance components are obtained. They are always non-negative and have smaller mean squared error (MSE) than the analysis of variance (AOV) estimators. The asymptotic sampling variances of the maximum likelihood (ML) estimators and the REML estimators are compared and the balanced incomplete block design (BIBD) is considered as a special case. The ML estimators are shown to have smaller asymptotic variances than the REML estimators, but a numerical result in the randomized complete block design (RCBD) demonstrated that the performances of the REML and ML estimators are not much different in the MSE sense.     

基于模糊层次分析的供应链绩效评价

供应链管理的绩效评价,对于供应链运作和管理是至关重要的.本文在对供应链上单个企业的绩效评价指标的局限性的分析基础上,阐述了供应链指标体系作用及设计原则,并构建了供应链绩效评价指标体系,同时利用层次分析法确定各指标的权重,最后运用模糊综合评价方法从定量的角度对企业绩效评价方法进行研究,并给出评价过程.     

事项会计理论:中国研究现状述评

事项会计理论首先由美国学者Sorter于上个世纪六十年代末年提出的,其目的是对传统会计进行彻底的改造。本文首先回顾了国内对这一领域的研究成果,然后做简要评价与展望,以期引起我国会计理论界对这一新领域的更多关注。     

Evaluating the Validity of Self-Reported Deviant Behavior Using Vignette Analyses

In this paper, the validity of vignette analyses of various forms of deviant behavior in the presence of opportunities is analyzed on the basis of ideas derived from cognitive psychology. Abelson’s Script Theory together with insights into human memory of visual and verbal information, allow the assumption that vignette analyses using visual stimuli are valid measures of deviant behavior in particular. The study includes an empirical examination of these ideas (n = 450). Nonparticipant observations and vignette analyses with visual and verbal material were carried out with regard to three forms of deviant behavior occurring in the presence of opportunities presenting themselves in everyday life. Observed and self-reported frequencies of deviant behavior or deviant intentions were counted and cross-tabulated. Log-linear analyses with dummy coding using observation data as reference category were run. Data analyses yielded the result that frequencies of deviant behavior were related to the techniques of data collection under consideration. Especially vignette analyses of the return of ‘lost letters’ that use both visual and verbal stimuli overestimate ‘actual’ (i.e. observed) return rates. This result is discussed with regard to the underlying methodological assumptions as well as its implications.     

Testing equality of variances in the analysis of repeated measurements

The problem of comparing the precisions of two instruments using repeated measurements can be cast as an extension of the Pitman-Morgan problem of testing equality of variances of a bivariate normal distribution. Hawkins (1981) decomposes the hypothesis of equal variances in this model into two subhypotheses for which simple tests exist. For the overall hypothesis he proposes to combine the tests of the subhypotheses using Fisher's method and empirically compares the component tests and their combination with the likelihood ratio test. In this paper an attempt is made to resolve some discrepancies and puzzling conclusions in Hawkins's study and to propose simple modifications.
The new tests are compared to the tests discussed by Hawkins and to each other both in terms of the finite sample power (estimated by Monte Carlo simulation) and theoretically in terms of asymptotic relative efficiencies.     

可持续乡村旅游的基本特征及其实现途径

乡村旅游正在全国各地形成热潮,并已成为乡村发展的新动力。可持续乡村旅游的基本特征表现为旅游产品的体验性、旅游环境的和谐性、旅游经济的循环性、旅游开发的扶贫性,强调应通过维护乡土特色、优化旅游环境、发展循环经济、全方位旅游扶贫等途径来实现乡村旅游可持续发展。