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51.
基于影响服务网点利润的客流量和消费水平两个随机因素进行分析,运用概率论相关理论,给出了服务网点销售额和利润的概率分布,由此确定投资规模及盈利条件。 相似文献
52.
53.
关于第三方物流理论的研究综述 总被引:1,自引:0,他引:1
本文概述了第三方物流的理论基础及国内外对第三方物流的研究现状,并在此基础上提出了国内外对此研究存在的问题。 相似文献
54.
Efficiency measurement with multiple outputs and multiple inputs 总被引:1,自引:2,他引:1
Subal C. Kumbhakar 《Journal of Productivity Analysis》1996,7(2-3):225-255
This paper discusses modeling technical and allocative inefficiencies in both cost minimizing and profit maximizing frameworks with special emphasis on multiple inputs and multiple outputs. Both primal and dual models are considered for this purpose. In the primal approach we use a separable output and input function (the constant elasticity of transformation output function and Cobb-Douglas input function). The dual models assume translog cost or profit functions. Technical inefficiency is assumed to be random in the cross-sectional models, and fixed firm-specific parameter in the panel data models. Allocative inefficiencies are always treated as input-specific parameters. We derive exact relations linking technical inefficiency and allocative inefficiencies to cost and profit when the underlying technology is represented by a flexible functional form such as the translog. It is shown that appending a one-sided homoscedastic error term to model technical inefficiency, or neglecting technical inefficiency altogether in a translog profit tunciton results in model misspecification and inconsistent parameter estimates. 相似文献
55.
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. 相似文献
56.
宁波市上市公司盈利质量不高的原因与对策 总被引:4,自引:1,他引:4
盈利质量的不断改善和提高是企业可持续发展的根本。上市公司的主营业务利润比重与企业盈利质量存在正相关关系,即主营业务利润比重越大,上市公司的盈利质量越高,因此,提高盈利质量的关键就是要突出主业,壮大主业,不断提高主营业务利润比重,形成自己的核心盈利能力。 相似文献
57.
James S. Weber 《Economic Theory》2002,20(2):341-355
Summary. This paper presents a general procedure for finding profiles with the minimum number of voters required for many important
paradoxes. Borda's and Condorcet's classic examples are revisited as well as generalizations. Using Saari's procedure line,
we obtain an upper bound for the minimum number of voters needed for a profile for which the Condorcet winner is not strictly
top ranked for all weighted positional procedures. Also we give a simple upper bound on the minimum number of voters needed for a set of prescribed voting outcomes. In contrast to situations wherein small numbers of voters are needed, we consider paradoxes
requiring arbitrarily large numbers of voters as well as large numbers of alternatives. Finally we indicate connections with
statistical rank based tests.
Received: April 18, 2001; revised version: May 25, 2001 相似文献
58.
Oded Stark 《Journal of Evolutionary Economics》2004,14(1):37-42
We offer a game-theoretic proof of Hamiltons rule for the spread of altruism. For a simple case of siblings, we show that the rule can be derived as the outcome of a one-shot prisoners dilemma game between siblings.JEL Classification:
A13, C70, D64Correspondence to: Oded Stark, ZEF, University of Bonn, Walter-Flex-Strasse 3, 53113 Bonn, GermanyWe are indebted to an anonymous referee and to Uwe Cantner for helpful comments and suggestions. Partial financial support from the National Institute on Aging (grant RO1-AG13037) and from the Humboldt Foundation is gratefully acknowledged. 相似文献
59.
It is recommended for economists to examine China’s Urban-Rural disparity from the perspective of transaction efficiency,
in that it can provide us with a systematic explanation to both the cases of different countries and development stages. China’s
Urban-Rural disparity is special and virtually a demonstration of its special transaction efficiency structure. Exploration
of China’s Urban-Rural disparity from such perspective indicates that, different from those in countries with a market economy,
China’s case involves many exogenous and contrived factors. Therefore, the solutions are to improve the whole transaction
efficiency in the economy, which includes eliminating its regionally unfavorable policies and institutions, and enforcing
more favorable and regionally balanced institutional reforms.
__________
Translated from Fudan Journal (复旦学报, Social Science Edition), 2006, (1) (in Chinese) 相似文献
60.
控制权性质影响税收敏感性吗?——基于企业劳动力需求的检验 总被引:9,自引:2,他引:9
西方学者研究表明企业所得税是劳动力需求的重要影响因素,这一理论在中国是否适用?中国大部分上市公司为国有控股企业,这一特殊的制度背景是否会影响企业所得税与劳动力需求的关系?本文基于2007年企业所得税改革这一外生政策变化,在检验西方企业所得税与劳动力需求关系的理论在中国是否适用的基础上,就不同控制权的性质是否会影响企业劳动力需求的税收敏感性进行了检验。研究发现企业所得税税率降低和"就业税盾"增加提高了企业劳动力需求,但这种税率和"就业税盾"的变化对国有控股企业劳动力需求变化的影响要显著小于非国有控股企业。这表明税收是影响企业劳动力需求的重要因素,但国有控制权使得这种税收敏感性变弱。本文的研究结果不仅丰富了相关领域的国际学术文献,而且对我国就业政策的制定具有政策含义。 相似文献