基于非线性理论的企业市场价值取向战略研究

针对传统企业对市场价值的线性思维模式,利用非线性理论建立了基于Logistic方程的市场价值模型,以及企业内部市场领先战略与技术领先战略模型;通过模型分析了实施单一市场领先战略或技术领先战略企业的发展前景;提出了企业市场价值取向的双绞线均衡战略及战略动态控制要求.     

A new approach for disclosure control in the IAB establishment panel—multiple imputation for a better data access

For micro-datasets considered for release as scientific or public use files, statistical agencies have to face the dilemma of guaranteeing the confidentiality of survey respondents on the one hand and offering sufficiently detailed data on the other hand. For that reason, a variety of methods to guarantee disclosure control is discussed in the literature. In this paper, we present an application of Rubin’s (J. Off. Stat. 9, 462–468, 1993) idea to generate synthetic datasets from existing confidential survey data for public release.We use a set of variables from the 1997 wave of the German IAB Establishment Panel and evaluate the quality of the approach by comparing results from an analysis by Zwick (Ger. Econ. Rev. 6(2), 155–184, 2005) with the original data with the results we achieve for the same analysis run on the dataset after the imputation procedure. The comparison shows that valid inferences can be obtained using the synthetic datasets in this context, while confidentiality is guaranteed for the survey participants.     

Value of Information in Closed Loop Supply Chains

We explore the value of information (VOI) in the context of a firm that faces uncertainty with respect to demand, product return, and product recovery (yield). The operational decision of interest in matching supply with demand is the quantity of new product to order. Our objective is to evaluate the VOI from reducing one or more types of uncertainties, where value is measured by the reduction in total expected holding and shortage costs. We start with a single period model with normally distributed demands and returns, and restrict the analysis to the value of full information (VOFI) on one or more types of uncertainty. We develop estimators that are predictive of the value and sensitivity of (combinations of) different information types. We find that there is no dominance in value amongst the different types of information, and that there is an additional pay‐off from investing in more than one type. We then extend our analysis to the multi‐period case, where returns in a period are correlated with demands in the previous period, and study the value of partial information (VOPI) as well as full information. We demonstrate that our results from the single period model (adapted for VOPI) carry‐over exactly. Furthermore, a comparison with uniformly distributed demand and return show that these results are robust with respect to distributional assumptions.     

协调博弈的摆动均衡：企业核心层关系的一个分析

一、问题的提出 本文的关注对象是企业。 在理论领域,企业是由合约组织形成的,合约是不完全的,不完全 的合约为企业运行带来很多不确定性,一些关注这一问题的企业理论, 探讨了弥补合约不完全性的途径:例如关系合同理论,通过将"关系"引 入合约来考察合约的运行;剩余控制权理论则试图通过明确剩余权利 的归属,使得合约得以完全,等等。但是合约真的能由此变完全吗? 在现实领域,以雇佣合约为例,通过在FD公司长时间地参与观     

金融合约理论述评

就金融合约理论主要解决什么问题,以及金融合约主要采用了哪种现代经济理论方法,把金融合约理论分成代理成本模型、非对称信息模型、控制权模型,并分别从传统资本结构和金融合约理论两个层次进行了述评。     

Surgical Suites' Operations Management

Surgical suites are a key driver of a hospital's costs, revenues, and utilization of postoperative resources such as beds. This article describes some commonly occurring operations management problems faced by the managers of surgical suites. For three of these problems, the article also provides preliminary models and possible solution approaches. Its goal is to identify open challenges to spur further research by the operations management community on an important class of problems that have not received adequate attention in the literature, despite their economic importance.     

On the Breslow–Holubkov estimator

Breslow and Holubkov (J Roy Stat Soc B 59:447–461 1997a) developed semiparametric maximum likelihood estimation for two-phase studies with a case–control first phase under a logistic regression model and noted that, apart for the overall intercept term, it was the same as the semiparametric estimator for two-phase studies with a prospective first phase developed in Scott and Wild (Biometrica 84:57–71 1997). In this paper we extend the Breslow–Holubkov result to general binary regression models and show that it has a very simple relationship with its prospective first-phase counterpart. We also explore why the design of the first phase only affects the intercept of a logistic model, simplify the calculation of standard errors, establish the semiparametric efficiency of the Breslow–Holubkov estimator and derive its asymptotic distribution in the general case.     

青少年犯罪防治的突破口、基础与全方位引导

预防青少年犯罪,现阶段的突破口应置于特困未成年人、外来务工青年,下岗青年、劳教劳改释放人员等重点人群之上;以多形式的法制宣传、可操作的自我保护去打好防范青少年犯罪的普法教育基础;以全方位的正面教育扩大防范青少年犯罪的覆盖面。     

三峡库区移民风险研究

阐述三峡库区移民风险研究背景、现状及意义,在辨识移民系统风险基础上,构建其风险评估机制,建立风险控制结构模型,并据此提出移民风险防范及控制策略,旨在为实施可持续发展移民提供更科学合理的理论依据和决策手段.     

相控序列的阵列交织快速生成

相控序列为一种性能优越的新型伪随机序列,长为(2~n-1)~2的PC序列可通过(2~n-1)~2的GMW序列和与相控序列相伴的交错序列交织生成。通过移位产生有限域元素和计算迹函数构造PC序列,分别产生了长为9, 49, 225, 961, 3 969, 16 129的PC序列,并验证了其性质。采用该方法由计算机模拟生成六万多个长为961的PC序列,时间小于12 s。