国际物资采购与物流体系发展趋势

概述了国际物资采购与物流体系发展的趋势;着重分析了全球化采购趋势、电子化采购趋势以及物流业务外包趋势。     

基于可拓评价方法的房地产开发企业核心能力评价

研究了房地产开发企业核心能力的分析维度及指标体系,构建由模糊决策分析法和可拓评价方法组成的新型房地产开发企业核心能力评价模型;并引入倒推法对评价结果进行分析,尝试对单个房地产开发企业的核心能力进行评价。     

物权法对我国企业的影响及其对策

《物权法》的颁布与实施,对定分止争和给予市场经济主体的财产权利平等保护有重大意义。尤其是作为市场经济中基本主体之企业,物权法的颁布将为其健康发展带来制度和法律上的保障。然而,物权法的实施也会给企业带来一些挑战。本文对物权法可能给企业带来的影响进行了思考,并提出了一些建设性的对策。     

论法制变迁与会计准则的执行

从国内现状的分析来看,中国会计管制中对计划一指令的强调使得在法律的认识上表现为关注法律的制定而非法律的执行。不同于英美会计准则制定时对于实务界需求的充分关注,虽然中国采取了相关的意见稿公布、听证等民主程序,但是民意表达的被动和对计划一指令的路径依赖使得强制性变迁下形成的中国企业会计准则面临与社会环境相适应的问题。会计准则的适应性问题是中国法制传统形成方式下的产物,也是有待实践进一步划清的事情。但是对会计信息质量状况改进的紧迫性促使目前会计管制的重心转向会计准则的执行。     

我国城市化危及土地资源持续利用的立法原因探析

随着我国城市化进程的不断加快 ,土地资源供给的有限性与人们对土地资源需求的无限性之间的矛盾日益突显。而在此背景下重新修订公布的《土地管理法》在涉及建设用地需求的无限扩展与农业用地数量的持续下降这两个突出问题上 ,并没有明确政府的职能定位 ,也反映出了相关制度的模糊性。本文就此进行了探讨。     

Nearly exact sample size calculation for powerful non‐randomized tests for differences between binomial proportions

In the case of two independent samples, it turns out that among the procedures taken in consideration, BOSCHLOO'S technique of raising the nominal level in the standard conditional test as far as admissible performs best in terms of power against almost all alternatives. The computational burden entailed in exact sample size calculation is comparatively modest for both the uniformly most powerful unbiased randomized and the conservative non‐randomized version of the exact Fisher‐type test. Computing these values yields a pair of bounds enclosing the exact sample size required for the Boschloo test, and it seems reasonable to replace the exact value with the middle of the corresponding interval. Comparisons between these mid‐N estimates and the fully exact sample sizes lead to the conclusion that the extra computational effort required for obtaining the latter is mostly dispensable. This holds also true in the case of paired binary data (McNemar setting). In the latter, the level‐corrected score test turns out to be almost as powerful as the randomized uniformly most powerful unbiased test and should be preferred to the McNemar–Boschloo test. The mid‐N rule provides a fairly tight upper bound to the exact sample size for the score test for paired proportions.     

Efficiency in the provision of social care for older people. A three-stage Data Envelopment Analysis using self-reported quality of life

Using a three-stage data envelopment analysis approach, this paper explores efficiency in the provision of social care for older people in 148 English Councils in 2009/10. Departing from D'Amico and Fernández (2012) [31] our measure of efficiency is inscribed within the production of welfare framework and based on self-reported quality of life of recipients of the services. Our results indicate a high level of efficiency, but once we control for the effects of a number of environmental variables, we found that more stringent eligibility criteria and higher assessment costs are negatively associated with the efficiency in the provision of social services.     

A note on the projection properties of Hadamard matrices obtained by the first Payley construction

We show that the projections on four factors of an arbitrary orthogonal array of strength 2 allow the estimation of main effects and two-factor interactions when all other effects are assumed to be zero, if those projections satisfy the bounds given by Weils theorem. The only exceptions are the Hadamard matrices of orders 16 and 24. A consequence is again the estimability of main effects and two-factor interactions for the projections on four factors of the first Payley construction for arbitrary run size.     

执法监测中正确使用环境标准初探

经过近四十年的发展和完善,我国的环境标准已形成了“两级五类”的完整体系。基层监测人员在执法监测中对环境标准的选择,要结合环境影响批复和污染工艺、排放去向进行综合考虑。在排污许可证上载明的污染物排放浓度与排放标准中规定的浓度限值不一致的情况下,应慎重选取排放标准规定的浓度限值。使用环境标准的基本原则是地方标准优先于国家标准,行业标准优先于综合标准,新标准优先于旧标准,地方政府文件不具有标准效力。     

The puzzle of greenhouse gas footprints of oil abundance

The present inquiry lays a groundwork for the analysis of the net greenhouse gas (GHG) footprint of oil in the oil-abundant settings. To address the research question, the study puts forward a three-sector decision model, which provides a common ground for the assessment of the interaction of the structuralist and institutional factors influencing environmental pollution in the oil-reliant economies. The study shows that fossil-fuel abundance triggers forces, which induce diametrically opposed effects concerning atmospheric pollution. These are the rising carbon-intensive oil extraction and processing and fossil-fueled power generation versus shrinkage of the carbon-intensive manufacturing and growth of the low-carbon tertiarization. The theoretical analysis enables compartmentalization of the essential factors, which determine GHG emissions in the respective countries. To assess the significance of the proposed theoretical framework, the study employs multivariate panel co-integration techniques and two-stage fixed effects estimations for a dataset of 38 oil-producing countries for the time period between 1960 and 2018. In contrast to the existing literature, this study drives apart from the black box approaches that employ just one omnibus variable, per capita income.