基于价值链的军事物流核心能力刍议

按照价值链管理的思想,可以把军事物流价值链分为物质价值链、采购价值链、知识价值链和信息价值链,依据对价值链的贡献,借助层次分析法等分析军事物流的能力要素,得出军事物流综合管理能力、整合能力、处理突发事件能力等三项基本核心能力,并对提升军事物流的核心能力提出了见解。     

软件限时开发方法的研究与应用

限时开发是快速应用开发的最佳实践之一。文章介绍了限时开发的基本概念和优点以及适用的项目范围,通过一个进销存软件的开发实例说明如何成功地应用限时开发方法。     

协整向量误设对相关检验的影响

常用于检验既定协整关系的统计量有tDF和tECM两种，但由于真实数据生成过程未知，估计模型中可能存在一定程度的协整向量误设，从而使统计量的分布特征受到影响。本文首先探讨tDF检验的隐含系数约束α=γ，即短期弹性等于先验长期弹性；其次分析零假设下两种统计量的分布特征，以及先验设定γ对信号噪声比q进而对tECM分布特征的影响；最后在局部备择假设下，给出两种统计量的渐近分布，并表明向量误设会降低协整检验的势，其程度与设定误差d正相关。     

现代网络型城市的区域规划理论思辨--长株潭地区的案例

借鉴城市地区网络化组织新理论,对全球化时代城市空间发展的非场所性进行研究,对传统中心地规划理论下的长株潭城市地区发展政策和概念性规划研究工作进行反思,提出了建设长株潭地区网络型城市地区的建议.     

Testing for unit roots in time series models with non-stationary volatility

Many of the key macro-economic and financial variables in developed economies are characterized by permanent volatility shifts. It is known that conventional unit root tests are potentially unreliable in the presence of such behaviour, depending on a particular function (the variance profile) of the underlying volatility process. Somewhat surprisingly then, very little work has been undertaken to develop unit root tests which are robust to the presence of permanent volatility shifts. In this paper we fill this gap in the literature by proposing tests which are valid in the presence of a quite general class of permanent variance changes which includes single and multiple (abrupt and smooth-transition) volatility change processes as special cases. Our solution uses numerical methods to simulate the asymptotic null distribution of the statistics based on a consistent estimate of the variance profile which we also develop. The practitioner is not required to specify a parametric model for volatility. An empirical illustration using producer price inflation series from the Stock–Watson database is reported.     

上市公司内部审计管理战略初探

上市公司内部审计在建立完善企业内部控制、加强内部管理、提高企业核心竞争力方面发挥着越来越大的作用。本文认为,在国际、国内经济形势日益发生变化的今天,如何从战略的角度开展内部审计的核心专长和核心能力的培养;内部审计人员的人事、招聘管理和内部审计人员的绩效评价管理的研究,显得十分重要。     

Two-sample rank tests with truncated populations

LetX ₁,…,X _m andY ₁,…,Y _n be two independent samples from continuous distributionsF andG respectively. Using a Hoeffding (1951) type theorem, we obtain the distributions of the vector S=(S ₍₁₎,…,S _(n)), whereS _(j)=# (X _i ’s≤Y _(j)) andY _(j) is thej-th order statistic ofY sample, under three truncation models: (a)G is a left truncation ofF orG is a right truncation ofF, (b)F is a right truncation ofH andG is a left truncation ofH, whereH is some continuous distribution function, (c)G is a two tail truncation ofF. Exploiting the relation between S and the vectorR of the ranks of the order statistics of theY-sample in the pooled sample, we can obtain exact distributions of many rank tests. We use these to compare powers of the Hajek test (Hajek 1967), the Sidak Vondracek test (1957) and the Mann-Whitney-Wilcoxon test. We derive some order relations between the values of the probagility-functions under each model. Hence find that the tests based onS ₍₁₎ andS _(n) are the UMP rank tests for the alternative (a). We also find LMP rank tests under the alternatives (b) and (c).     

基于核心能力生命周期的预算管理

核心竞争力已成为企业制胜未来并取得持续竞争优势的基础和根本,是企业战略的重心,而其一般要经过孕育、成长、成熟、衰退、调整阶段。本文以企业核心能力的生命周期为基础,从动态的角度着重探讨企业在每一核心能力生命周期阶段预算管理工作的目标及重点。     

论网络媒体核心竞争力的培育

网络媒体要在激烈的媒体竞争中求的发展,离不开竞争力的培育,而核心竞争力的培育是网络媒体能否在这崭新的信息时代发挥其应有作用的关键。本文正是结合当代网络媒体业的实践,阐述了网络媒体核心竞争能力的内涵、特征及其构成要素,并探讨了网络媒体在现有资源和能力中培育核心竞争力的具体方法。     

宁波市上市公司盈利质量不高的原因与对策

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。