Consistent estimation in the bilinear multivariate errors-in-variables model

A bilinear multivariate errors-in-variables model is considered. It corresponds to an overdetermined set of linear equations AXB=C, A∈ℝ^m×n, B∈ℝ^p×q, in which the data A, B, C are perturbed by errors. The total least squares estimator is inconsistent in this case.  An adjusted least squares estimator is constructed, which converges to the true value X, as m →∞, q →∞. A small sample modification of the estimator is presented, which is more stable for small m and q and is asymptotically equivalent to the adjusted least squares estimator. The theoretical results are confirmed by a simulation study. Acknowledgements. We thank two anonymous reviewers for their suggestions and corrections.? A. Kukush is supported by a postdoctoral research fellowship of the Belgian office for Scientific, Technical and Cultural Affairs, promoting Scientific and Technical Collaboration with Central and Eastern Europe.? S. Van Huffel is a full professor with the Katholieke Universiteit Leuven.? I. Markovsky is a research assistant with the Katholieke Universiteit Leuven.? This paper presents research results of the Belgian Programme on Interuniversity Poles of Attraction (IUAP V-22), initiated by the Belgian State, Prime Minister's Office – Federal Office for Scientific, Technical and Cultural Affairs of the Concerted Research Action (GOA) projects of the Flemish Government MEFISTO-666 (Mathematical Engineering for Information and Communication Systems Technology), of the IDO/99/03 project (K.U. Leuven) “Predictive computer models for medical classification problems using patient data and expert knowledge”, of the FWO projects G.0078.01, G.0200.00, and G0.0270.02.? The scientific responsibility is assumed by its authors.     

推进浙江农产品物流发展的途径探索

根据农产品物流的特点,结合实际情况和相关统计数据,深入分析和讨论了浙江农产品物流现状及存在的主要问题,有针对性地分别从农产品物流战略规划和信息平台建立的角度提出了推进浙江现代农产品物流发展的途径及措施。     

探究项目教学法在高职院校物流管理专业技能人才培养中的应用

针对我国现代物流人才匮乏的现实,为了提高学生实践动手能力,按照"工学结合"的人才培养模式,通过采用项目教学法,结合物流企业工作环节现状,从设计项目开始到完成项目都让学生参与其中,使学生在学习过程中达到掌握岗位技能、提高职业能力等目标,从而培养现代物流人才,提高物流人才素质与知识结构。     

Tourism and regional development a genetic approach

Research on tourism and regional development should include a temporal perspective, for studies of contemporary and economic impact are, by themselves, insufficient to explain tourism's contribution to regional development. Such a genetic approach is used to examine the growth and impact of tourism in Queenstown, New Zealand. Events and interrelationships are examined over the last twenty-five years to show the process of growth, changes in the patterns of local and outside involvement and the increasing sophistication of a resort once based largely on scenic factors alone. Certain sectors of the industry have been developed primarily by individuals and companies from the local region, while others have been dominated by outsiders. Although the former contribute the most to regional development through local participation in the development process, external developments have also generated complementary growth. A consideration of events over a certain time span allows these different factors to be placed more clearly in the context of regional development.     

Process,goal, and social interaction differences in recreation: What makes an activity substitutable

Abstract

In the present study two recreational activities, deer hunting and goose hunting, both similar in form, are compared. The study shows that the activity with the fewest perceived substitutes, deer hunting, also showed higher mean ratings on items measuring the importance of various elements of the experience, such as the process of participation, the goal of the activity, and the social interaction that accompanies the activity by the participants. Deer hunters also reported greater participation in the activity by peers and were more likely to be introduced to the activity by a family member. It is argued that these differences in the importance of the elements of the experiences influence the perceived substitutability of a recreational activity.     

Chinese and British consumers’ evaluation of Chinese and international brands and factors affecting their choice

This paper examines Chinese and British consumers’ evaluations of Chinese, and international brands, and factors affecting their brand choice. The results support recent findings of a decline in Western brands’ preference in China. But, these are attributed to several factors. The findings show country of origin does not affect Chinese brand choice, has a great effect on British choice between Chinese and other brands; brand value, and brand familiarity influence Chinese choice whereas brand reputation, and brand trust determine British choice. Implications for Chinese domestic and international expansion strategies, demographics’ influence, and cultural differences are discussed.     

国际碳贸易价格波动对可再生能源投资的影响机制——基于实物期权理论的分析

有效利用可再生能源是促进节能减排实现绿色循环经济的重要手段。目前,可再生能源技术成本仍高于传统能源技术,因而需要获得额外的经济激励以增加其投资。《京都议定书》所建立的国际碳贸易体系是支持发展中国家实现碳减排的重要机制,但该贸易体系发展前景不明确,这将深刻影响我国可再生能源投资。本文分析和揭示了国际碳贸易体系的不确定性对可再生能源投资决策的影响,在此基础上提出了分别存在于可再生能源项目前期规划阶段和项目建设阶段的增长期权和延迟期权;通过构建两阶段期权模型研究国际碳价格波动下企业延迟投资的灵活性,并量化确定可再生能源项目投资期权价值,采用Monte-Carlo仿真分析法进一步验证模型,推导得出国际碳价格波动对可再生能源项目投资的作用机制。     

“营销策划”课程结构与实践教学思路

营销策划是一门专业技能深化的课程,应该把握“道与术”的结合。本文总结出营销策划的六个发展阶段,提出营销策划课程以“三道”、“四力”、“五技”为主要内容的建设思路,指出专业技能的双维度深化与课程内容的三层架构,总结了营销策划的实践教学过程中“教、叫、交”三个进程,即思辨分析、完成课业、设计方案。     

文学与科学相结合:科普社会化的途径研究

科普是科学与人文的交集。在灵活多样的科普途径中,文学途径的优势在于普及科学理性,而科普的根本意义也正在于普及科学理性,因为科学理性是科学的根本和灵魂所在。科学童话既符合科学特质又具有普及性特点,其作用在于深入浅出地介绍科学知识,使少儿在轻松愉快的语境中,学会各种科学知识,增强科学理念。文学途径在科学普及的产业链条中预期会产生很好的社会效益。     

The Government Transformation Programme of Malaysia: a successful approach to public service reform

The 2009 Malaysian Government Transformation Programme (GTP) could be useful as a model for reform given its positive impact on improving public services in targeted key result areas. This paper assesses the GTP's approach in the context of the wider debate on whether reforms should be based on best practices or whether they should be diagnostic or problem-solving in approach. The GTP's success was largely the result of blending both approaches. The GTP experience in Malaysia provides a number of insights and lessons for delivering intelligent reforms quickly and effectively.