Use of minimum risk approach in the estimation of regression models with missing observations

This article considers a linear regression model with some missing observations on the response variable and presents two estimators of regression coefficients employing the approach of minimum risk estimation. Small disturbance asymptotic properties of these estimators along with the traditional unbiased estimator are analyzed and conditions, that are easy to check in practice, for the superiority of one estimator over the other are derived. Received May 2001     

TWO READINGS AND AN EPILOGUE: A COMMENTARY ON THE VOICE OF SEDUCTION IN MYNATTET AL.

Two readings are made of Mynatt, Omundson, Schroeder and Stevens (pp. 657–683). The first reading views the paper through a largely “conventional” social science lens, while the second adopts a more critical perspective which raises three issues: abstraction in research; gender and ethnicity; and the rhetoric of research.     

Modeling ethical attitudes and behaviors under conditions of environmental turbulence: The case of South Africa

This study explores the impact of environmental turbulence on relationships between personal and organizational characteristics, personal values, ethical perceptions, and behavioral intentions. A causal model is tested using data obtained from a national sample of marketing research professionals in South Africa. The findings suggest turbulent conditions lead professionals to report stronger values and ethical norms, but less ethical behavioral intentions. Implications are drawn for organizations confronting growing turbulence in their external environments. A number of suggestions are made for ongoing research. Michael H. Morris became the Fletcher Jones Chair in Entrepreneurship at the University of the Pacific, Stockton, CA in 1993. He received his Ph.D. in Marketing. He is the author of two books and over forty articles in academic journals, including the Journal of International Business Studies, the Journal of Business Research, the Journal of Management, and the Journal of the Academy of Marketing Science. Dr. Morris' principal research interests include entrepreneurial behavior, industrial marketing strategy, and pricing.Amy Seidel Marks has been a Senior Lecturer in Marketing at the GSB UCT since 1989. She holds a Ph.D. in Marketing from the Kellogg Graduate School of Management, and has worked in the areas of consumer behavior analysis and social marketing for 20 years. During her time in South Africa she has conducted numerous research projects in areas such as AIDS prevention, tobacco control and iodine deficiency, and has also served as a consultant to national projects in tuberculosis drug compliance, tobacco control and adult education.Jeff Allen received his doctorate from the University of Kentucky. He is currently an Assistant Professor of Marketing at the University of Central Florida, Orlando, Florida, Dr. Allen has published in various national and international academic journals on topics of social responsibility, marketing ethics, and health care marketing. Newman S. Perry, Jr. is Professor of Management, School of Business and Public Administration at the University of the Pacific in Stockton California. He has just completed Business, Government, and Society: Managing Competitiveness, Ethics, and Social Issues published by Prentice-Hall and previously coauthored a book on strategic management.     

Asymptotic expansion of S-estimators of location and covariance

By means of a straightforward application of empirical process theory, we show that S-estimators of multivariate location and covariance are asymptotically equivalent to a sum of independent vector and matrix valued random elements respectively. This provides an alternative proof of asymptotic normality of S-estimators and clearly explains the limiting covariance structure. It also leads to a relatively simple proof of asymptotic normality of the length of the shortest α-fraction.     

State takeover legislation and share values: The wealth effects of Pennsylvania's Act 36

Proponents of state antitakeover legislation argue that previous empirical tests by financial economists of the wealth effects of Pennsylvania's 1990 antitakeover law are biased. We show that the proponents are correct. In particular, firm size, event-time clustering, and non-synchronous trading effects account for the wealth decreases reported in earlier studies. We also show, however, that both proponents and critics of the Pennsylvania legislation have ignored the earliest press release about it. The wealth effect associated with this announcement is negative, large, and statistically significant. These results therefore are consistent with the hypothesis that the Pennsylvania law decreased company values and with the hypothesis that the initial market reaction is an unbiased estimate of the law's effect on firm values.     

In search of the meaning of entrepreneurship

This paper is an attempt to build a bridge between the popular and the academic usage of the terms entrepreneur and entrepreneurship, and to identify the raw materials needed to construct an interpretive framework capable of illuminating the nature of entrepreneurship and its role in economic theory. We review briefly the contributions made to this topic by Cantillon, Schumpeter, Schultz and Kirzner. We advance a synthetic definition of the entrepreneur as someone who specializes in taking responsibility for and making judgemental decisions that affect the location, the form, and the use of goods, resources, or institutions. We then conclude with some observations on the basic choice confronting economics regarding the place of entrepreneurship in economic analysis.     

Professionals and social responsibility: Some patterns

Modern professionals are engaged in making things better, but the specific advances on the micro-level are increasingly undercut by problems on the macro-level. The content of this better is typically guided by values such as efficiency, productivity or cost-effectiveness, which are essentially output over input ratios unable to account for how a specific improvement will fit into the broader human, social and ecological contexts. Hence, micro-level advances lead to fragmentation and a loss of harmony, compatibility and conviviality. The situation is further complicated by the fact that, culturally speaking, science and technology have become good in themselves, making reasonable discourse difficult. This paper concludes with an analogy from an earlier epoch suggesting how the situation may be resolved. After completing a doctorate in Mechanical Engineering, Willem Vanderburg continued his studies of technology via the social sciences and humanities. He is currently the Director of the Centre for Technology and Social Development in the Faculty of Applied Science and Engineering at the University of Toronto. His publications include Technique and Culture, Vol. I, The Growth of Minds and Cultures (1985) and Perspectives on our Age (1981).     

Corporate ethical consulting: Developing management strategies for corporate ethics

The increase of scandals in the business sector is forcing many companies to examine their corporate ethical behavior with a view toward rebuilding their corporate value system. This article describes how value-system reconstruction must proceed in a company and demonstrates that corporate ethics can only become plausible if based on a corporate ethical ethos. It outlines a five-step development plan of management strategies toward rebuilding a company's value system on this corporate ethos through: corporate policy and strategy reformulation; corporate ethical code promulgation and value-statement formulation; management ethical training and corporate ethical education; and corporate ethical performance evaluation. The role of the corporate ethical consultant is also outlined to illustrate how corporate ethical consulting can provide the specialized services designed to insure an enduring management ethical upgrading and to improve a company's corporate ethical performance record. The discussion indicates how corporate ethical consulting promotes good business through its capacity to deliver industry credibility and company security. Richard Guerrette is a Research Fellow at Yale University Divinity School, where he is conducting a research study in organization management process and corporate ethics. He is also a Lecturer in sociology at the University of Connecticut at Hartford and is an author of two books on ecumenical ministry and social movement organization in the church. He has published extensively in theological journals and has recently contributed an article on Environmental Integrity and Corporate Responsibility for the Journal of Business Ethics 5 (1986). He is the Director of Equipax, an organization/management consulting service in Farmington, Connecticut.     

Are you a strategist or just a manager?

Perhaps the greatest strategist of all time was not a business executive but a general. Helmuth von Moltke, chief of the Prussian and German general staffs from 1858 to 1888, issued "directives" to his officers rather than specific commands. These guidelines for autonomous decision making encouraged Moltke's subordinates to show individual initiative. In this article, Hans Hinterhuber and Wolfgang Popp translate Moltke's example into business terms. According to Moltke, strategy is applied common sense and cannot be taught. The authors suggest that good entrepreneurs and managers--along with generals--are born with the qualities that make them successful. But even if managers have the potential to be good strategists, they must develop and hone their natural talents. And CEOs and top management can help by identifying and promoting such talents in their employees. Hinterhuber and Popp have created a questionnaire that helps measure strategic management competence. Managers and entrepreneurs take this test themselves, answering ten questions such as, "Do I have an entrepreneurial vision?", "Do I have a corporate philosophy?", and "Do I have competitive advantages?" Using the questionnaire, company management can evaluate managers being considered for a promotion. At the same time, those who take the test can use it to determine their own performance as strategists. Strategic managers provide subordinates with general guidelines, just as Helmuth von Moltke issued directives to his officers. And outstanding entrepreneurs create a corporate culture in which their vision, philosophy, and business strategies are implemented by employees who think independently.