A surplus process involving a compound Poisson counting process and applications

Abstract

In this paper, we introduce a surplus process involving a compound Poisson counting process, which is a generalization of the classical ruin model where the claim-counting process is a homogeneous Poisson process. The incentive is to model batch arrival of claims using a counting process that is based on a compound distribution. This reduces the difficulty of modeling claim amounts and is consistent with industrial data. Recursive formula, some properties and relevant main ruin theory results are provided. Further, we consider applications involving zero-truncated negative binomial and zero-truncated binomial batch arrivals when the claim amounts follow exponential or Erlang distribution.     

高等教育人口规模对经济增长的影响：地区异质性检验

近年来我国高等教育人口规模不断扩张,对经济社会产生了积极的影响。本文通过建立数理模型阐释了高等教育人口扩张对经济增长的影响机理,并使用1995年到2013年的省级面板数据考察了我国高等教育人口扩张对经济增长的作用,以及这一作用在不同地区的异质性。固定效应和随机效应模型表明,我国高等教育人口扩张促进了地区经济增长,且中西部地区的促进作用要大于东部地区。为了克服由反向因果引起的内生性偏误,本文使用2SLS方法进行了相应处理,结果依旧稳健。本文的研究对于制定高等教育发展的相关政策具有一定的参考意义。     

Inequality for equireplicated n-ary block designs with unequal block sizes

It is shown that certain inequalities known for binary, equireplicated, equiblock-sized block designs remain valid for equireplicated n-ary block designs with unequal block sizes. The approach used here is based on the spectral expansion of the C-matrix of the block design. The main theorems include some useful and combinatorially interesting results.     

人道主义视域中的生态经济——基于中国语境的生态政治哲学研究

当今中国所面临的生态环境问题,在根本上是资本掠夺造成的结果.解决这一问题的根本途径,既不是提高社会成员的合理消费意识与技术创新,也不能完全依赖作为公权力的政府.必须首先确立马克思人道主义的社会发展价值目的性,以普通民众利益为重;建设法治社会,创造一切条件鼓励民众日常社会生活的广泛参与;规范资本,阻止资本对自然资源生态环境的掠夺与破坏.     

＂大学生素质拓展计划＂实施现状调查及对策——以西南交通大学为例

“大学生素质拓展计划”是由共青团中央、教育部、全国学联为深入推进高校素质教育而联合实施的一项系统工程。对西南交通大学的大学生进行问卷调查,发现大学生对“大学生素质拓展计划”的认知度较高,评价较好,但“计划”实施环节中的职业设计指导还存在不足之处。因此,应加强职业设计的指导力度,提高素质拓展项目质量．进一步完善其评价体系。同时加强对“计划”的实施指导和宣传力度,强化素质拓展认证工作和社会认同度,使“计划”更好地服务于学生的成长成才。     

Flexibility and regularity properties of the asymptotically ideal production model

This paper uses simulations to investigate the ability of the Asymptotically Ideal Model(AIM) to approximate unknown technologies. AIM was proposed by Barnett and Jonas (1983) as an expansion which could approximate any indirect utility or cost function arbitrarily well at all prices. By applying AIM to simulated data, we fmd a significant improvement in prediction by higher orders of AIM relative to the generalized Leontief and the translog. The largest error in approximating some CES technologies with AIM is 125 times smaller than that of the generalized Leontief and we find a translog approximation error 1000 times that of AIM in others. We also fmd that non-negativity constraints used by Barnett, Geweke, and Wolfe (1991) to impose concavity on the model greatly restrict the flexibility of AIM, even when all the inputs are substitutes.     

新形势下拓展高校内审工作的思考

文章针对当前高校内审工作的现状,对在新形势下高校内审工作如何定位以及如何拓展高校内审工作的深度和广度等方面进行了探讨,以求更好地发挥高校内审的作用,促进高校资源的合理配置,提高资金的最大使用效益。     

Segments of Self and Other: The Magyar Hungarian Case

Using a case study from the border region of southeast Hungary, this paper makes the argument that national identity is experienced as a segmented structure of Selves and Others of varying social distances, rather than a binary Self and Other. It also posits that only some of these Others, those perceived to be the most familiar and threatening, are useful for members of a nation to use in thinking about themselves, either in alliance or opposition. In this Hungarian case, the most useful Others for defining Hungarian identity in alliance and opposition are, respectively, the Western and Balkan Other .     

古代越族若干问题新探

结合有关越族的文献记载和研究成果,文章提出了一些与传统看法不同的结论。认为“越”、“于越”之称均来自中原华夏族,而非源于越族本身。春秋后期,越族的活动区域北至今江苏北部,西至安徽中南部和江西东北部,南至浙江西南部,东至大海;战国前期,扩大到今山东南部和福建中部;到战国中后期,进而向南迁徙至今广东东部一带。