Information matrix for a mixture of two inverse gaussian distributions

In this paper, Fisher information matrix about the five parameters ρ, μ_:1, μ², λ¹and λ²of a mixture of two Inverse Gaussian density functions is obtained. The Leguerre-Gauss quadrature formula is used to evaluate the essential integral on which the twenty five elements of the information matrix are based. Results involving the computation of the information about p are compared with those involving both the power series expansion and Simpson's method of integration. Laguerre-Gauss quadra-ture was found to lead to good approximations as compared with other methods. It was therefore chosen for the computations of the elements of the information matrix.     

Solving the Stochastic Growth Model by Parameterizing Expectations

This article describes a method for solving the one-good stochastic growth model by parameterizing the expectations part of the stochastic Euler equation. The conditional expectation is specified as a function of the state of the system, and the parameters of that function are estimated to solve the model. The article includes a discussion of how to find the parameters of the function and determine systematically the complexity of the functional form necessary to solve the model.     

“投票悖论”的分析及其矫正——理性选择理论的“投票现象”应用批判

投票机制是民主政治的制度性保障,但它却存在着一个悖论。这一悖论可被简单地表述为：在投票参与者意识到自己的选票对结果的影响是微不足道的时候,他们往往不会牺牲闲暇以及交通成本等方面的付出到投票站投出手中的选票。美国大选仅仅具有半数左右的参与率似乎也在事实上为以上＂洞见＂提供了心理学依据和社会学依据。在试图解决投票悖论这一问题的过程中,具体分析理性选择理论是如何从一个过分武断化了的前提出发,而走向一条循环论证的死胡同的;进而希望通过为投票动机添加新的变量的方式来缓解理性选择理论的这种弊病。     

Flows and Cohesion: Balancing Capabilities Across an Expanded Union1

Until recently the flow of skilled workers to established centres from more peripheral regions was seen as a ‘brain drain’, implying a one‐way and permanent loss of skilled labour. However, increasing mobility and connectivity permits more complex traffic between more and less advanced locations. With the emergence of a global economy dependent on flows of material and intellectual capital, the notion of ‘brain circulation’ has gained prominence. Understanding the potential benefits of migration to both donor and recipient economies must move beyond financial remittance to social remittance. As connectivity increases, both become capacity‐building resources. This article discusses the impact of a combination of greater physical mobility and electronic connectivity on the dual objectives of social cohesion and technical leadership being pursued through the policies of the European Commission.     

现代化进程中古城风貌的保护与延伸

在现代化进程中古城风貌保护与延伸的理论与对策应是社会学学者所关注的一个问题。古城应在动态中进行“城市性格”保护和延伸,在宏观上分异城市功能,在微观上注重“修旧如旧”和“点、线、面”的三位一体,城市社区的建设问题可以在保护和延伸中协调解决。     

The probabilistic analysis of testimony

The probabilistic analysis of testimony is surveyed. The coverage is not comprehensive; attention is focused on several problems of particular interest or complexity. The theory often contains implicit assumptions, and some attempt is made to clarify the role these play. The theory originally arose in an attempt to understand the logic of belief. It was not empirically grounded, however, and later died out in the 19th century when its conclusions became largely self-evident, and its non-empirical background suspect.     

"非个性化":复杂的悖论--艾略特诗学理论探源

艾略特"非个性化"理论是一个复杂的悖论是对浪漫主义的反拨,更是诗人寻找"客观对应物"而"间接地表现他的个性"的经验之谈.艾略特追求和提倡的是把染有个性的想像转变成无个性的艺术真实."非个性化"悖论蕴涵了个性与非个性即特殊与普遍、复杂与纯一的辩证关系.     

《镜花缘》“君子国”里“让”与“争”的道德解析

"好让不争"是《镜花缘》君子国里极力加以渲染和"雅化"的道德模式,其最核心、最集中的东西是通过一些"交易光景"展现的。通过对书中几处"交易光景"的解析,认为"好让不争"实质上已变成了"因让而争",这样"让"也就被自身所否定,变成了"不让",虽不是惯常的损人利己性质之争,而是损己利人性质之争,然损己利人与损人利己本是出发点不同,但最后都落实到一个"争"字上,这个"争"字从本质上讲并无高下之分,都是为一己之私而争,都有违"己所不欲勿施与人"的道德要求,于是道德异化为不道德。只不过一是为自己的精神利益,一是为自己的物质利益,形成君子国里的道德悖论。从中也能感受到作者最大的困惑。     

悖论的拟化形式

在悖论问题的研究中 ,正确地地区分严格悖论和非严格悖论 ,对悖论问题的解决无疑具有十分重要的意义。本文对非严格悖论的一种重要类型 ,“悖论的拟化形式” (imitationofparadox)作了探讨 ,指出拟化形式实质上包括三种类型 ,一 ,如张建军先生所言 ,缺乏“公认正确的背景知识” ;二 ,缺乏“同等有力的逻辑证明” ;三 ,同时缺乏前两者     

胀接对管板强度的加强效应

由于胀接使列管与管板紧密连接，管壁厚度的部分或全部可以考虑在管桥 宽度中.本文通过数值计算分析了胀接对管板强度的加强效应.