浅析英国工业革命的市场条件

国内外市场的存在及市场需求的不断增长的压力是英国工业生产发展的主要动因。英国可资利用的市场规模远较欧洲其它国家的市场大,这大大便利了英国工业品的生产与销售。英国市场的性质也有助于工业再生产的进行。     

手机银行用户采纳的影响因素研究

手机银行作为新兴的金融服务手段有着很大的发展潜力,然而现有研究对其拓展模式还没有清晰的认识.本文在2007年对以中层管理人员为主的中青年消费群体问卷调查和访谈的基础上,通过结构方程模型(SEM)的构建分析,开发了手机银行用户采纳模型(TAM).该模型为手机银行的有效拓展提供了科学的依据,通过该模型可发现拓展手机银行应该着重改善服务内容,提高用户的使用能力,加快对用户的服务速度,并消除消费者对手机银行安全方面的顾虑.     

高级管理人员变更、股权特征与盈余管理——来自中国上市公司的经验证据

本文以2003-2006年我国A股上市公司为研究样本,检验公司发生高级管理人员变更时的盈余管理行为。研究结果表明,发生高级管理层变更的公司,高级管理人员变更的当年存在较严重的调减利润的盈余管理行为;此外,对于发生了高级管理人员变更的公司,如果其控股股东是地方和中央政府部门所属国企或中央直属国企,则其调减利润的盈余管理行为可以得到一定程度的抑制;大股东的制衡度越大,公司盈余管理的幅度也将越小。研究结果还显示,当发生高级管理人员变更时,上述因素对公司调增利润的盈余管理行为基本没有影响。     

A Risk Analysis Model in Concurrent Engineering Product Development

Concurrent engineering has been widely accepted as a viable strategy for companies to reduce time to market and achieve overall cost savings. This article analyzes various risks and challenges in product development under the concurrent engineering environment. A three‐dimensional early warning approach for product development risk management is proposed by integrating graphical evaluation and review technique (GERT) and failure modes and effects analysis (FMEA). Simulation models are created to solve our proposed concurrent engineering product development risk management model. Solutions lead to identification of key risk controlling points. This article demonstrates the value of our approach to risk analysis as a means to monitor various risks typical in the manufacturing sector. This article has three main contributions. First, we establish a conceptual framework to classify various risks in concurrent engineering (CE) product development (PD). Second, we propose use of existing quantitative approaches for PD risk analysis purposes: GERT, FMEA, and product database management (PDM). Based on quantitative tools, we create our approach for risk management of CE PD and discuss solutions of the models. Third, we demonstrate the value of applying our approach using data from a typical Chinese motor company.     

基于不同动机的联盟控制方式选择及其对联盟绩效的影响——中国企业联盟的实证分析

企业为了不同的目标建立战略联盟,而有效的联盟控制是实现目标的重要保证.本文从战略联盟的动机出发,提出实现不同联盟目标所应采取的控制方式,并研究了不同的联盟控制方式对联盟绩效的影响.通过企业间联盟的数据对本文相关假说进行了实证检验.     

A New Methodology for Before–After Safety Assessment Using Survival Analysis and Longitudinal Data

The widely used empirical Bayes (EB) and full Bayes (FB) methods for before–after safety assessment are sometimes limited because of the extensive data needs from additional reference sites. To address this issue, this study proposes a novel before–after safety evaluation methodology based on survival analysis and longitudinal data as an alternative to the EB/FB method. A Bayesian survival analysis (SARE) model with a random effect term to address the unobserved heterogeneity across sites is developed. The proposed survival analysis method is validated through a simulation study before its application. Subsequently, the SARE model is developed in a case study to evaluate the safety effectiveness of a recent red‐light‐running photo enforcement program in New Jersey. As demonstrated in the simulation and the case study, the survival analysis can provide valid estimates using only data from treated sites, and thus its results will not be affected by the selection of defective or insufficient reference sites. In addition, the proposed approach can take into account the censored data generated due to the transition from the before period to the after period, which has not been previously explored in the literature. Using individual crashes as units of analysis, survival analysis can incorporate longitudinal covariates such as the traffic volume and weather variation, and thus can explicitly account for the potential temporal heterogeneity.     

企业诚信与竞争优势的关系研究--基于苏州等六地188家企业的实证调查

本文在综合和提炼了企业诚信与竞争优势的相关理论基础上,将企业诚信分为三个维度,分别是信用水平、品牌、利益相关者信任;将竞争优势分为销售业绩、发展潜力、管理绩效三个维度.本文分析了企业诚信三维度与竞争优势三维度之间的相关和回归关系,研究结论有利于企业诚信建设.     

IT安全系统安全效能评估模型

建立了对IT安全系统的安全效能进行评估的安全效能评估模型,该模型具有简单、客观、节省资源和时间、量化了系统安全性、评估结果直观的特点,与通用评估准则不同,从另一个角度来评价IT安全系统的安全性.     

Web环境下IT招标项目风险评价决策支持系统研究

分析了IT招标项目的基本风险特征,并针对因IT招标项目中风险因素多、不确定性大而导致复杂的复合决策问题,在传统决策支持系统的基础上设计了综合推理方式的.NET架构下Web环境IT项目风险评价决策支持系统,分析了系统的功能、特点和设计方法,详细讨论了系统的结构,并给出系统运作过程和实现方法.     

基于Bayes概率边界域的粗集分类方法及其在高频数据中的应用

 作为一种近似处理的工具,粗集主要用于不确定情况下的决策分析,并且不需要任何事先的数据假定。但当前的主流粗集分类方法仍然需要先经过离散化的步骤,这就损失了数值型变量提供的高质量信息。本文对隶属函数重新加以概率定义,并提出了一种基于Bayes概率边界域的粗集分类技术,比较好的解决了当前粗集方法所面临的数值型属性分类的不适应、分类规则不完备等一系列问题。