实验设计的新前沿

产品和过程开发是业务长期生存的基础，生存和成功的关键是培养创新和减少产品上市时间，同时使产品到达最佳性能。     

Pseudo empirical likelihood method in the presence of missing data

In this paper, we propose an estimator for the population mean when some observations on the study and auxiliary variables are missing from the sample. The proposed estimator is valid for any unequal probability sampling design, and is based upon the pseudo empirical likelihood method. The proposed estimator is compared with other estimators in a simulation study.     

Identity, identification, and relationship through social alliances

The authors studied social alliances, a type of corporate societal marketing initiative. Their research finds that social alliances are an important means whereby employees identify more closely with their organizations while gaining a greater sense of being whole, integrated persons. Furthermore, this integration allows both organizations and their members to align their commercial identities with their moral and social identities. As organizational members struggled to resolve conflicts within their own identities, they were aided by social alliances, which in turn led them to identify more with their organizations. Unlike previous research, the findings suggest that the kind of connections referred to by the informants went well beyond the cold, rational associations described in previous research to emotional attachments that appear to be critical to organizational identification. The results also suggest that participation in social alliances may result in multiple forms of identification: intra- and interorganiza-tion identification. Ida E. Berger (bergeri@ryerson.ca) is the associate director of faculty affairs and a professor of marketing in the School of Business Management at Ryerson University. She received her Ph.D. from the University of Toronto. Her articles have appeared in leading marketing journals, including theJournal of Consumer Research, Public Policy and Marketing, theJournal of Consumer Psychology, andCalifornia Management Review. Her current research interests include social alliances, voluntary and nonprofit sector studies, diversity, and the value of sports in social inclusion. Her teaching interests include marketing theory, consumer behavior, and marketing communications. Peggy H. Cunningham (pcunningham@business.queensu.ca) is the Marie Shantz Teaching Associate Professor of Marketing, School of Business, in the Queen’s University. She completed her Ph.D. at Texas A&M University. Dr. Cunningham’s research interests revolve around two related themes: marketing ethics and marketing partnerships (international strategic alliances, partnerships between for-profit and not-for-profit organizations, relationships between firms and their customers). These areas of study are linked by their focus on the concepts of trust, integrity, and commitment. She is the coauthor of the Canadian editions of a number of marketing textbooks (Marketing Management; Principles of Marketing; and Marketing: An Introduction). Her work is published in a number of journals, including theJournal of the Academy of Marketing Science, the Journal of International Marketing, and California Management Review. Minette E. Drumwright (mdrum@mail.utexas.edu) is an associate professor with a joint appointment in the College of Communication (Department of Advertising) and the College of Liberal Arts at The University of Texas at Austin. Previously, Dr. Drumwright was on the marketing faculties of Harvard Business School and the University of Texas Business School. She currently is the faculty chair of the Bridging Disciplines Program in Ethics and Leadership at the University of Texas. She has a Ph.D. in business administration (marketing) from the University of North Carolina at Chapel Hill. Dr. Drumwright’s current research is in the areas of corporate social responsibility, marketing for nonprofit organizations, and business ethics. Her focus is on understanding how managers and consumers integrate noneco-nomic criteria related to society into their decision making. Dr. Drumwright has studied noneconomic criteria in various contexts, including cause-related marketing, partnerships between companies and nonprofit organizations, socially responsible buying behavior, and corporate volunteerism. Her articles and cases have been published in various books and journals, includingCalifornia Management Review, theJournal of Advertising, and theJournal of Marketing.     

Cross-national differences in trade union membership in OECD countries

This article examines how trade union membership varies across 16 OECD countries in the 1980s. Higher density of membership is found to be associated with a higher degree of centralisation of wage bargaining, higher percentage of employees covered by collective bargaining, a larger public sector and a more leftist party of government.     

The demographic cycle and optimal schooling choices

A model is developed that enables the authors to estimate the effects of demographic cycles on both earnings and schooling. The model is tested using data from the 1991 Korean Occupational Wage Survey. The results indicate that cohorts following large birth cohorts in the cycle choose relatively less formal schooling compared to pre-peak cohorts, and that post-peak cohorts also have lower incomes. This result concerning South Korea is consistent with findings from previous studies concerning the United States.     

The Effects of Megamergers on Efficiency and Prices: Evidence from a Bank Profit Function

This paper examines the efficiency and price effects of mergers by applying a frontier profit function to data on bank megamergers. We find that merged banks experience a statistically significant 16 percentage point average increase in profit efficiency rank relative to other large banks. Most of the improvement is from increasing revenues, including a shift in outputs from securities to loans, a higher-valued product. Improvements were greatest for the banks with the lowest efficiencies prior to merging, who therefore had the greatest capacity for improvement. By comparison, the effects on profits from merger-related changes in prices were found to be very small.     

Annual Reporting Mechanisms of National Health Service Trusts

This article investigates the role of the annual report and the annual general meeting (AGM) in the context of NHS trusts. The authors report the results of a questionnaire survey of every NHS trust in the UK. Significant variation in the approach taken within a common framework of accountability was found. In general, there seems to be little public demand for trusts' annual reports and attendance at their AGMs was low. The research indicates possibilities of extending annual reporting in the public sector beyond the annual report and AGM and discloses innovative ways that trusts have attempted to overcome the limited interest of stakeholders produced by the traditional reporting mechanisms.     

Discussion of “Differential Market Reactions to Revenue and Expense Surprises”

Ertimur et al. (2003, this issue) study the difference in the market;s reaction to revenue versus expense surprises. The discussion first reviews their main findings and assesses the paper's potential contributions. Alternative explanations are then considered for the base-line result that the market reacts more to revenue surprises than to expense surprises. The hypothesized reasons for revenue surprises to matter more are critiqued, as are the tests of the hypotheses, and potential extensions that would link these test to financial statement analysis are suggested. Finally, two aspects of the assessment of how the reaction to revenue and expense surprises differs across value and growth firms are discussed: The definitions of value and growth firms and the potential benefits of assessing why analyst revenue forecasts are (not) observed for many value (growth) firms.     

Buyer-Type Effects in Conservation and Preservation Property Values

Properties can be bought by government agencies, land trusts, or private entities for conservation and preservation purposes, such as farmland preservation, wildlife refuges, other conservation, and cultural and historical preservation. There is variation in the dollars paid per acre across properties and across buyer type. An option value model based on future potential land uses is used to explain much of this variation. The data used in our analysis is sales transactions data for conservation and preservation purposes from throughout the United States. We find that much of the value of conservation properties is derived from future potential land uses, including housing, timber, recreation, and conservation. We confirm that public versus private buyers value options differently, which makes sense from a public good point of view, if markets are thin.