中国上市公司终极控制权及其与东亚、西欧上市公司的比较分析

本文运用终极产权论对上市公司的控股主体进行分类,通过追踪上市公司终极控制股东,发现在1260家样本公司中,终极控制股东拥有的控制权平均为43.67%,而其投入的现金流平均只有39.33%,就是说控制股东投入的现金流显著小于其获得的控制权,有4.34%的差异,两者的比值为0.890。在三种终极控制股东中,家族企业投入了相对较少的现金流量,却取得了相对较多的控制权,控制权和现金流量权的偏离达到了49.16%。同时,通过对中国上市公司和东亚、西欧国家的上市公司进行比较分析,得出了许多有意义的结论。     

信息系统成本与效益评估方法分析

介绍了信息系统成本与效益评估的几种方法,并且分别讨论了这些方法的优缺点,为投资方在投资信息系统项目时提供有效的参考依据.     

On the Bootstrap of the Maximum Score Estimator

This paper shows that the bootstrap does not consistently estimate the asymptotic distribution of the maximum score estimator. The theory developed also applies to other estimators within a cube‐root convergence class. For some single‐parameter estimators in this class, the results suggest a simple method for inference based upon the bootstrap.     

Clickstream Data and Inventory Management: Model and Empirical Analysis

We consider firms that feature their products on the Internet but take orders offline. Click and order data are disjoint on such non‐transactional websites, and their matching is error‐prone. Yet, their time separation may allow the firm to react and improve its tactical planning. We introduce a dynamic decision support model that augments the classic inventory planning model with additional clickstream state variables. Using a novel data set of matched online clickstream and offline purchasing data, we identify statistically significant clickstream variables and empirically investigate the value of clickstream tracking on non‐transactional websites to improve inventory management. We show that the noisy clickstream data is statistically significant to predict the propensity, amount, and timing of offline orders. A counterfactual analysis shows that using the demand information extracted from the clickstream data can reduce the inventory holding and backordering cost by 3% to 5% in our data set.     

Growth and Heat Resistance Kinetic Variation Among Various Isolates of Salmonella and its Application to Risk Assessment

The abilities of cells of a particular type of bacteria to leave lag phase and begin the process of dividing or surviving heat treatment can depend on the serotypes or strains of the bacteria. This article reports an investigation of serotype-specific differences in growth and heat resistance kinetics of clinical and food isolates of Salmonella. Growth kinetics at 19 degrees C and 37 degrees C were examined in brain heart infusion broth and heat resistance kinetics for 60 degrees C were examined in beef gravy using a submerged coil heating apparatus. Estimates of the parameters of the growth curves suggests a small between-serotype variance of the growth kinetics. However, for inactivation, the results suggest a significant between-serotype effect on the asymptotic D-values, with an estimated between-serotype CV of about 20%. In microbial risk assessment, predictive microbiology is used to estimate growth and inactivation of pathogens. Often the data used for estimating the growth or inactivation kinetics are based on measurements on a cocktail--a mixture of approximately equal proportions of several serotypes or strains of the pathogen being studied. The expected growth or inactivation rates derived from data using cocktails are biased, reflecting the characteristics of the fastest growing or most heat resistant serotype of the cocktail. In this article, an adjustment to decrease this possible bias in a risk assessment is offered. The article also presents discussion of the effect on estimating growth when stochastic assumptions are incorporated in the model. In particular, equations describing the variation of relative growth are derived, accounting for the stochastic variations of the division of cells. For small numbers of cells, the expected value of the relative growth is not an appropriate "representative" value for actual relative growths that might occur.     

品牌个性维度的本土化研究

品牌个性维度一直是营销理论研究和营销实践领域中的一个热点课题。Jenniffer Aaker于1997年首次系统地发展了基于美国的品牌个性维度及量表,日本和西班牙的品牌个性维度及量表也相继诞生。然而,中国的本土化品牌个性维度及量表却仍然是一个空白。本文首先采用了西方的词汇法、因子分析和特质论作为方法论基础,以来自中文语言、中国的品牌为内容,经中国消费者的实证研究发展出中国的品牌个性维度及量表,并从中国传统文化角度阐释了中国的品牌个性维度——“仁、智、勇、乐、雅”。然后本文对中国的品牌个性维度与美国、日本的品牌个性维度进行了跨文化比较研究。     

锌丝连铸机结晶器的研究

锌及其合金在现代工业中具有广泛的用途,连续铸锌的关键部件是锌结晶器,锌结晶器是一种有内热源的二维多态传热系统,其传热过程及其复杂.文章介绍了连铸型锌结晶器的结构,导出了锌结晶器的传热学数学模型,分析了结晶器的传热过程,并对锌丝连铸机组进行了试验研究.     

行政共和主义的基本理念——基于西方公民治理理论的解构与重构

行政共和主义既是历史的自然发展,又是理论逻辑的必然演进.公民治理理论作为西方公共行政学的前沿理论,可以看作行政共和主义较为典型的理论形态,但并没有充分展现行政共和主义的丰富内涵.从当代共和主义的视界解构公民治理理论,可以建构起行政共和主义的基本理念框架:以共有为基础,以共治为原则,以平等为秩序,以协商为方式.行政共和主义是公共行政学发展的最高阶段.