MSE performance and minimax regret significance points for a HPT estimator under a multivariate t error distribution

In this article, assuming that the error terms follow a multivariate t distribution,we derive the exact formulae forthe moments of the heterogeneous preliminary test (HPT) estimator proposed by Xu (2012b Xu, H. (2012b). MSE performance and minimax regret significance points for a HPT estimator when each individual regression coefficient is estimated. Commun. Stat. Theory Methods 42:2152–2164.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]). We also execute the numerical evaluation to investigate the mean squared error (MSE) performance of the HPT estimator and compare it with those of the feasible ridge regression (FRR) estimator and the usual ordinary least squared (OLS) estimator. Further, we derive the optimal critical values of the preliminary F test for the HPT estimator, using the minimax regret function proposed by Sawa and Hiromatsu (1973 Sawa, T., Hiromatsu, T. (1973). Minimax regret significance points for a preliminary test in regression analysis. Econometrica 41:1093–1101.[Crossref], [Web of Science ®] , [Google Scholar]). Our results show that (1) the optimal significance level (α*) increases as the degrees of freedom of multivariate t distribution (ν₀) increases; (2) when ν₀ ? 10, the value of α* is close to that in the normal error case.     

Some new lower bounds to various discrepancies on combined designs

The foldover is a useful technique in construction of two-level factorial designs. A foldover design is the follow-up experiment generated by reversing the sign(s) of one or more factors in the initial design. The full design obtained by joining the runs in the foldover design to those of the initial design is called the combined design. In this article, some new lower bounds of various discrepancies of combined designs, such as the centered, symmetric, and wrap-around L₂-discrepancies, are obtained, which can be used as a better benchmark for searching optimal foldover plans. Our results provide a theoretical justification for optimal foldover plans in terms of uniformity criterion.     

Information architecture for effective Workload Control: an insight from a successful implementation

The implementation of Workload Control (WLC), a Production Planning and Control concept uniquely designed for Make-To-Order companies, has been a constant challenge. Scholars argued that WLC is largely developed through simulations of well-defined environments while much more complex circumstances (e.g. information availability) have emerged in field research. A recent trend of WLC research is to improve the practical applicability of the concept, where empirical evidence is essential. However, success in WLC implementation remains impeded. The availability of data has been a significant area that frustrates the implementation process. While there is a tendency to simplify data requirements in recent WLC theory development, it is important to understand and maintain the information that is essential for the concept to be effective. For the first time in the field, this paper details the information architecture for WLC. Key informational entities of relevance to the input/output control functions in WLC as well as performance measurement are discussed based on evidence from a successful implementation. The paper not only sheds light for practitioners on how to construct an information system that facilitates successful WLC implementation but also has implications for future development of WLC mechanisms coping with information uncertainties in practice.     

影响公共政策有效执行主体因素分析

消除公共政策执行偏差,提高公共政策有效执行程度,是公共政策执行学者致力研究的重要课题。从公共政策执行主体角度思考,公共政策执行偏差主要源于公共政策执行主体"理性逐利"的结果。消除公共政策执行偏差产生之政策执行主体因素,应加强行政伦理建设,培育公共政策执行主体"公共"精神;加强对公共政策执行主体正面的利益激励,增强公共政策执行主体有效执行公共政策的诱因;加强对公共政策执行主体政策执行活动的监督和控制,防止公共政策执行变形和走样等。     

"上有政策、下有对策"--案例分析与博弈启示

"上有政策、下有对策"本质上是相关政策主体之间基于利益得失的考虑而进行的一种博弈过程,政策目标的实现程度取决于博弈参与者的策略选择,而博弈参与者的策略选择从根本上又取决于作为博弈规则的制度.因此,要从根本上防治"上有政策、下有对策"这种非合作博弈的不良影响,则需从干部管理、绩效考核、行政监督、财政管理、责任追究及信息反馈等方面进一步完善作为博弈规则的相关制度.     

中国农村扶贫开发的政策转向及其挑战——以四川省马边彝族自治县为例

以历史维度的政策梳理和现实材料的经验分析为依据,讨论我国农村扶贫开发已经经历或者正在经历的五大政策转向：扶贫方针由救济式扶贫转向开发式扶贫;瞄准对象由区域、县域转向贫困村、贫困户;扶贫方略由“大水漫灌”转向精准扶贫;社会动员由政府扶贫转向社会扶贫;主体地位由被动式扶贫转向参与式扶贫。扶贫开发转向在经验材料上得到验证,但仍面临着项目制扶贫的短期效益、参与式悖论、治理困境等问题,对于这些问题的经验与理论探讨可以为“扶贫攻坚”的历史性任务提供贫困观重构、人力资本建设与贫困治理等方面的借鉴。     

高新区自主创新战略实施与绩效考评初探

高新区是我国实施自主创新战略的一支重要力量,然而具体实践中如何取得突破,收到实效,如何做到“科学有为”又不“缺位”、“错位”?这就需要由管委会协调激励自主创新各职能部门的工作,评估组织、部门和员工自主创新的工作绩效。文章围绕高新区组织管理创新,建立科学规范的绩效考核评价体系,实现以结果为导向的追踪机制等问题进行了初步探讨。     

企业客户培育

随着全球经济的日益发展,企业间的竞争日益白热化,争夺客户已成为企业制胜的法宝,如何培育客户,让客户成为能为企业带来长期效益的资源?首要的是留住客户,并在此基础上仔细分析客户信息,使客户信息成为企业内部共享的资源,同时明确留住老客户比开发新客户更重要。留住客户的前提是让客户满意,满意是企业提供的产品现实与客户期望的差距,是一种心理感觉。企业优质的服务,体验购买的快乐,完善的消费行为管理,为客户成为企业忠诚的客户打下基础,并成为企业培育客户行之有效的方法。     

Optimum Conservative Price Increase Decisions in a Competitive Market

This paper outlines a systematic procedure for a firm's price increase decisions in a competitive market. Following a conservative approach, a previously published competitive pricing model is extended and used to address the question of where, when, and by how much prices should be raised. In its present form, the approach is useful for low priced, frequently purchased products.     

Balancing uniqueness and similarity: A content analysis of textual characteristics in Dutch corporate stories

Writing corporate stories to articulate identity is challenging because one must balance between the recognizable similarities with other companies (e.g., core activities, type of industry) and the company's own uniqueness. In the present study, we propose a conceptualization of corporate stories in terms of similarity and uniqueness, and present a scheme of six main categories of textual characteristics: general, style, structure, content, genre, and layout. The scheme is illustrated in a content analysis of 45 Dutch consumer-focused corporate stories. The results indicate that, contrary to the literature and guidelines on corporate stories, similarities in textual characteristics with other corporate stories are as typical for a corporate story as its uniqueness. Theoretical and managerial implications are discussed.