工程项目招投标及风险管理探析

文章介绍了工程项目招投标的概念、国际工程项目招投标的一般程序和国际工程项目承包方式、类型和内容,针对特殊工程项目面临的风险,主要从招投标方面探讨了风险识别、估计、规划、控制等问题。     

First-order identification in linear models

The problem considered here is the ‘first-order’ identification of linear models, i.e., the identification of the coefficients of the variables appearing in the model. A general approach is proposed and very simple results are stated in this general context. A geometric interpretation of this approach is given. Classical results in this area are shown to be special cases of these general results.     

Global identification of risk preferences with revealed preference data

The concept of parameter identification (for a given specification) is differentiated from global identification (which specification is right). First-order conditions for production under risk are shown to admit many alternative specification pairs representing risk preferences and either perceived price risk, production risk, or the deterministic production structure. Imposing an arbitrary specification on any of the latter three determines which risk preference specification fits a given dataset, undermining global identification even when parameter identification is suggested by typical statistics. This lack of identification is not relaxed by increasing the number of observations. Critical implications for estimation of mean-variance specifications are derived.     

司法会计鉴定基础理论探讨

关于司法会计鉴定的基础理论问题学界一直没有形成较一致的观点。司法会计鉴定与法务会计虽然法律渊源不同,但事实上二者本质相同,都是为委托人提供财务会计资料证据或者专家鉴定意见的社会专业活动。在总结和评价国内外学者有关研究的基础上探讨司法会计鉴定的概念、目标、假设、原则等基础理论问题,对司法会计鉴定的研究具有重要意义。     

HHM在装备试验风险识别中的应用

针对装备试验这一复杂大系统中的风险识别问题,引入等级全息建模的分析方法。分析等级全息建模的思想和原则;确定风险的定义与装备试验风险源;建立装备试验风险概念模型;设计装备试验HHM框架并分析其在装备试验风险识别中的应用。     

国家审计免疫应答机制及其应用

将风险管理理念引入国家审计,结合医学免疫应答原理,国家审计免疫应答机制可分为风险感知、风险特异性识别和评估、风险应对、信息与沟通、监控五个部分.据此可设计国家审计免疫应答流程.针对土地出让金风险以及我国目前4万亿元经济刺激计划演示具体的国家审计免疫应答机制的具体流程.     

Identification of rational expectations models

This paper deals with the problem of the identification of simultaneous Rational Expectations (RE) models. In the case of RE models with current expectations of the endogenous variables, the necessary and sufficient conditions for the global identification are derived explicitly in terms of the structural parameters and the linear homogenous identifying restrictions. It is shown that in the absence of a priori restrictions on the processes generating the exogenous variables and the disturbances, RE models and general distributed lag models are ‘observationally equivalent’. In the case of RE models with future expectations of the endogenous variables, a general solution that highlights the ‘non-uniqueness’ problem and from which other solutions such as forward or backward solutions can be obtained, is derived. It is shown that untestable and often quite arbitrary restrictions are needed if RE models with future expectations are to be identifiable. Certain order conditions similar to those obtained for the identification of RE models with current expectations are also derived for this case.     

The statistical analysis of overidentified linear recursive models

This paper examines identification and estimation in recursive linear models. After developing the main result on identification of recursive models, the paper considers estimation in models subject to overidentifying constraints. A particularly simple, but quite general and efficient, approach to estimating constrained recursive models is developed.     

Multi-cultural leadership teams and organizational identification in international joint ventures

Many international joint ventures (IJVs) fare poorly. An important factor is that members of an IJV top management team (TMT), which generally comprises people from different cultures, often find it difficult to work together. In this paper we argue that social identity theory and organizational identification processes can help us understand why this is so. We propose that factionalism in a TMT is a significant hazard posed by member identification with different parents. In addition, identification with both the IJV and a parent firm can lead to significant role conflict for IJV top managers. Factionalism and role conflict in turn can result in poor intra-TMT communications and inefficient decision making. Literature in social identity theory and organizational identification suggests that the relative status and power of parents as well as successes of IJVs can affect TMT members' identification with the IJV or the parent company. Preliminary field interviews provide general support for these propositions. Our analysis suggests that organizational identity and identification can be a valuable tool to facilitate the understanding of TMT functioning and IJV performance.     

轨道交通一体化衔接模式与实践探讨

文章对国内外轨道交通衔接经验进行了系统的分析,结合规划实践,提出了轨道交通衔接的基本理念、对策、布局模式,该成果对于轨道交通功能的发挥具有重要的指导意义。     

RFID技术在冰产品供应链中的应用研究

RFID是利用射频信号对目标物进行识别的技术,具有准确率高、识别速度快等优点。论文首先简要介绍了RFID的工作原理与技术特点,然后结合水产品供应链中生产、加工、仓储、运输、销售等各环节,阐述了RFID技术的具体应用和需要解决的问题。     

西安南五台旅游景区解说标识系统设计研究

基于我国现阶段旅游景区解说标识系统构建及研究较为薄弱的现实,在分析国内外景区解说标识系统研究概况的基础上,根据旅游景区解说标识系统的理论方法,以南五台宗教文化旅游景区为研究对象,经过实地考察和调查分析,阐述了该景区解说标识系统的现状及其存在的问题,并有针对性地提出了该景区解说标识系统的设计理念和系统方案。以期有助于南五台景区宗教文化与生态旅游的可持续发展。     

网站Web日志数据预处理模型的建立

文章对Web日志数据的预处理进行研究,建立了一个通用的基于Web日志数据预处理的模型。此模型主要包含数据清理、用户识别、会话识别、路径补充、格式化5个基本步骤。研究中,在用户识别步骤加入了时间维度,基于此实现的算法在一定程度上提高了Web日志中用户识别的准确度。经过预处理之后,Web日志数据由原来的半结构化被转换成结构化,并存储在数据库中,以便后期Web挖掘的开展。实践证明,该模型是可行的,并具有良好的可扩展性。     

高校贫困生认定:现状、问题与对策

在现行的高校贫困生资助体系中,高校贫困生认定是高校贫困生资助政策执行过程中的一个难题。针对资助政策本身所具有的模糊性,高校普遍结合自身的实际情况对贫困生的认定方法进行了具体化。文章针对我国高校贫困生认定的现状,分析了各高校中普遍采用的认定方式、认定方法与认定标准,在此基础上对我国高校贫困生认定中的问题进行了探析与说明,并进一步提出了改进与完善高校贫困生认定工作的建议。     

企业环境成本的确认与控制

目前,如何解决经济发展与环境保护的矛盾,促进社会经济的可持续发展,已经成为世界各国共同关注的问题,迫使企业对环境成本的控制日趋重视。文章在分析企业环境成本内涵的基础上,探讨企业环境成本的确认和控制,并按照可持续发展理念9建立生态文明的要求,提出了一些完善企业环境成本确认和控制的措施。     

空间加权矩阵设置与空间面板参数估计效率

总结了常用的空间加权矩阵的一般构建方法和研究领域内新提出的空间加权矩阵的构建方法,从宏观与微观层面,量化分析了空间加权矩阵设置对于空间面板参数估计效率、空间效应识别的影响效应。结论表明：宏观数据层面,随着空间加权矩阵复杂程度的提高,无论是空间面板固定效应模型还是空间面板随机效应模型,参数估计的有效性与一致性都显著提高并且广义矩参数估计方法优于拟极大似然估计方法,复合的空间加权矩阵条件下,拉格朗日乘子检验方法的功效更高;微观数据层面,回归结果表明四种不同类型的空间加权矩阵的设置,对于聚集外部性引致的企业全要素生产率增长的空间边界的识别具有显著影响,复合的空间加权矩阵更有效。     

浅析计算机取证技术

计算机取证是对计算机犯罪证据的识别、获取、传输、保存、分析和提交认证过程,实质是一个详细扫描计算机系统以及重建入侵事件的过程。本文主要介绍了计算机取证的概念、特点,计算机取证的过程,然后探讨了计算机取证的发展趋势和局限性。     

On the satisfaction of peak demand in the certainty case

The concept of full-capacity flat-rate equilibrium is explored for a version of the Arrow-Debreu model with time-differentiated goods and production subject to a capacity constraint. The corresponding equilibrium allocations are shown to be inefficient in general. It is also shown that rationing peak demand is Pareto superior to non-rationing.     

Robustness and the general dynamic factor model with infinite-dimensional space: Identification,estimation, and forecasting

General dynamic factor models have demonstrated their capacity to circumvent the curse of dimensionality in the analysis of high-dimensional time series and have been successfully considered in many economic and financial applications. As second-order models, however, they are sensitive to the presence of outliers—an issue that has not been analyzed so far in the general case of dynamic factors with possibly infinite-dimensional factor spaces (Forni et al. 2000, 2015, 2017). In this paper, we consider this robustness issue and study the impact of additive outliers on the identification, estimation, and forecasting performance of general dynamic factor models. Based on our findings, we propose robust versions of identification, estimation, and forecasting procedures. The finite-sample performance of our methods is evaluated via Monte Carlo experiments and successfully applied to a classical data set of 115 US macroeconomic and financial time series.     

Employee relationship management — Realizing competitive advantage through information technology?

Employee relationship management (ERM) constitutes an emerging trend of managing human resources by building and maintaining individualized and mutually valuable relationships with employees based on information technology. However, given the early and still emerging state, there is little knowledge and agreement regarding ERM. Hence, the current paper attempts to clarify the concept and derive research implications. The formation and the strategic, processual and technological components of ERM are derived and discussed based on the Customer Relationship Management (CRM) concept that preceded it. As a result, a first general outline of an interesting and ambitious concept is presented. Based on the outline, major implications for further conceptual elaboration, theoretical foundation and empirical evaluation of ERM are derived to propose directions for future research.