Generalized Laplacian approximations in Bayesian inference

This paper presents a new Laplacian approximation to the posterior density of η = g(θ). It has a simpler analytical form than that described by Leonard et al. (1989). The approximation derived by Leonard et al. requires a conditional information matrix R_η to be positive definite for every fixed η. However, in many cases, not all R_η are positive definite. In such cases, the computations of their approximations fail, since the approximation cannot be normalized. However, the new approximation may be modified so that the corresponding conditional information matrix can be made positive definite for every fixed η. In addition, a Bayesian procedure for contingency-table model checking is provided. An example of cross-classification between the educational level of a wife and fertility-planning status of couples is used for explanation. Various Laplacian approximations are computed and compared in this example and in an example of public school expenditures in the context of Bayesian analysis of the multiparameter Fisher-Behrens problem.     

机械装置转子支承系统临界转速估算K3法

根据机械振动和积木式传递矩阵法的原理,提出了用于估算单、双转子系统一阶临界转速的实用方法,从而得到的“K3表”可方便地使用于产品的方案设计阶段或现场排故,并可得到满意的工程精度。     

试论高校体育乒乓球教学中学习动机的培养

学习动机是学生学习的基本动力因素之一。该文通过对教学目标设置、创设激起内驱力的情境和积极进行反馈等方面进行分析 ,论述了高校体育乒乓球教学中培养学生良好的学习动机 ,对提高教学质量将起到积极的推动作用。     

乌鲁木齐市旅游产业关联和产业波及分析

以乌鲁木齐市为例,利用投入产出表对旅游业的产业关联和产业波及效应作系统的定量分析,通过揭示旅游业的投入结构、中间需求率、中间投入率、旅游业的波及线路、影响力及影响力系数、感应度与感应度系数等重要指标,旨在为乌鲁木齐市的旅游经济研究提供有益的决策参考。     

考虑环境因素下的上海世博会经济影响评价

通过对环境生态成本的分析，根据上海市2002年的投入产出表，建立了基于资源一经济一环境绿色投入产出表的绿色GDP核算方法。利用这一方法对2010年上海世博会对上海经济一环境影响进行分析研究，结果反映了上海世博会对上海的综合影响。     

A Macro-Economic Framework for Evaluation of Cyber Security Risks Related to Protection of Intellectual Property

The article is based on the premise that, from a macro-economic viewpoint, cyber attacks with long-lasting effects are the most economically significant, and as a result require more attention than attacks with short-lasting effects that have historically been more represented in literature. In particular, the article deals with evaluation of cyber security risks related to one type of attack with long-lasting effects, namely, theft of intellectual property (IP) by foreign perpetrators. An International Consequence Analysis Framework is presented to determine (1) the potential macro-economic consequences of cyber attacks that result in stolen IP from companies in the United States, and (2) the likely sources of such attacks. The framework presented focuses on IP theft that enables foreign companies to make economic gains that would have otherwise benefited the U.S. economy. Initial results are presented.     

投入产出分析对河北省农业经济的影响

针对河北省当前农业经济发展存在的主要问题,利用投入产出分析法从农业资金投入、产业结构调整、支持保障体系三方面对河北省农业经济的影响进行了分析.对加速河北农业经济持续稳步发展、增加农民收入具有重要的现实意义.     

我国船舶工业产业波及效应研究

船舶工业对国民经济的促进作用不仅体现在其自身发展产生的推动力,还体现在船舶工业在快速发展的同时通过与上下游产业的广泛联系所产生的产业波及效应.运用投入产出法,根据我国投入产出表,通过我国船舶工业产业关联面、产业关联度、影响力系数、感应度以及生产诱发系数等指标,系统分析船舶工业的产业波及效应,结果表明:船舶工业与其他产业具有广泛而紧密的关联,对相关产业产生了重要的影响.     

榆林能源化工基地产业依存度分析

以2002年陕西省的投入产出表为依据,编制2002年榆林能源化工基地的投入产出表,对2002年榆林能源化工基地的产业依存度状况进行分析;结合2006年榆林统计年鉴编制出2005年榆林能源化工基地的投入产出表,分析2005年榆林能源化工基地的产业依存度状况并与2002年的进行比较。结果表明:能源化工产业各部门之间的依赖关系越来越紧密,各行业对自身的依赖程度在增加,尤其是煤炭开采的独立性增强,与其他产业的关系密切。     

基于共引网络理论的产业需求竞争网络

根据2002-2012年北京市投入产出的直接消耗系数,结合共引网络的建模思想,构建一类加权无向网络——产业需求竞争网络,并引入边权、单位权和差异性作为衡量网络中竞争关系的指标。通过研究发现:INCN-BJ网络的边权反映了产业链环节的完善程度,单位权反映了产品部门对产业系统的促进作用,差异性则区分出产业系统中需要加大产业政策指导的落后产品部门。