Almost unbiased estimation in multiplicative models

In the lognormal linear models the estimation of constant term presents problems. In this paper we use weighted jackknife procedure (suggested by Hinkley 1977) for reducing the bias of the maximum likelihood estimator. The resulting estimator is unbiased upto order (1/T),T being the number of observations, and has the same MSE as that of the MLE to the same order of approximation; moreover, being the jackknife estimator it enjoys all the desirable large sample properties like any other jackknife estimator. The research of this author is partially supported through a research grant from NSERC of Canada.     

The content and focus of Canadian corporate codes of ethics

This paper primarily reports the findings of content analyses of seventy-five codes of ethics ofFinancial Post 500 corporations. The contents of each code were comprehensively evaluated along sixty-one criteria according to four levels. It was found that the focus of these codes was the protection of the firm. While some of them refer to issues of social responsibility, they are principally concerned with conduct against the firm.Maurica Lefebvre holds an Honours Bachelor of Arts Degree in Psychology from the University of Western Ontario and a Bachelor of Commerce degree and MBA from the University of Windsor. She is presently employed marketing consumer packaged goods.Jang B. Singh, B. A. (Toronto), M. A. (St. Thomas), M. A. (Toronto), M. B. A. (Windsor), Ph. D. (Toronto) is Associate Professor at the Faculty of Business Administration of the University of Windsor. His research focus is on ethical issues involved in the management process.     

Global Social Media Usage: Insights Into Reaching Consumers Worldwide

This study documents global social media usage patterns based on a large‐scale survey of 4,630 social media users around the world. The study provides insights into how users in the European Union, United States, and BRIC (Brazil, Russia, India, and China) regions use social media for business and personal use. It analyzes variability in global social media platforms being used in these different world regions. The study also presents insights into usage of multilingual content for global social media consumption and the global user propensity to translate social media. Finally, the paper showcases an innovative technology solution to help companies leverage machine and human translation to enable users to translate social media content. © 2012 Wiley Periodicals, Inc.     

A capital adequacy buffer model

We develop a new capital adequacy buffer model (CABM) that is sensitive to dynamic economic circumstances. The model, which measures additional bank capital required to compensate for fluctuating credit risk, is a novel combination of the Merton structural model, which measures distance to default and the timeless capital asset pricing model (CAPM), which measures additional returns to compensate for additional share price risk. We apply the model to a portfolio of mid-cap loan assets over a 10-year period that includes pre-GFC (global financial crisis), GFC and post-GFC. An analysis of actual defaults over this period shows the model to be far more accurate in determining the capital adequacy levels needed to counter credit risk than an unresponsive ratings model such as the Basel standardized approach.     

Random matrix application to correlations amongst the volatility of assets

In this paper, we apply tools from random matrix theory (RMT) to estimates of correlations across the volatility of various assets in the S&P 500. The volatility inputs are estimated by modelling price fluctuations as a GARCH(1,1) process. The corresponding volatility correlation matrix is then constructed. It is found that the distribution of a significant number of eigenvalues of the volatility correlation matrix matches with the analytical result from RMT. Furthermore, the empirical estimates of short- and long-range correlations amongst eigenvalues, which are within RMT bounds, match with the analytical results for the Gaussian Orthogonal ensemble of RMT. To understand the information content of the largest eigenvectors, we estimate the contribution of the Global Industry Classification Standard industry groups to each eigenvector. In comparison with eigenvectors of correlation matrix for price fluctuations, only few of the largest eigenvectors of the volatility correlation matrix are dominated by a single industry group. We also study correlations between ‘volatility returns’ and log-volatility to find similar results.     

Redefining psychological contracts with the U.S. work force: A critical task for strategic human resource management planners in the 1990s

The well-publicized waves of layoffs in recent years have destroyed the long-standing psychological contract between employees and their employers which promised pay, promotion, and job security in exchange for worker skills, effort, and loyalty. This article provides empirical support for the transformational effect layoffs have had on psychological contracts and discusses the critical role human resource management must play in establishing and developing new contracts to guide future employment relationships between employers and employees. Implications for both academics and practitioners are provided. © 1998 John Wiley & Sons, Inc.     

‘A Comparison of the Contents of the Codes of Ethics of Canada’s Largest Corporations in 1992 and 2003’

This paper compares the findings of content analyses of the corporate codes of ethics of Canada’s largest corporations in 1992 and 2003. For both years, a modified version of a technique used in several other studies was used to determine and categorize the contents of the codes. It was found, inter alia, that, in 2003, as in 1992, more of the codes were concerned with conduct against the firm than with conduct on behalf of the firm. Among the changes from 1992 to 2003 were a significant increase in the frequency of mention of environmental affairs, legal responsibility as the basis of codes and enforcement/compliance procedures.     

The Influence of CSR and Ethical Self-Identity in Consumer Evaluation of Cobrands

In a multi-source study, we examine how frequent change interacts with ethical leadership to reduce turnover intentions. We argue that ethical leaders enhance employees’ state self-esteem, which explains the moderating effect of ethical leadership. Results from 124 employee-coworker-supervisor triads revealed that ethical leadership moderated the relationship between frequent change and turnover intention such that the relationship was positive only when ethical leadership was low. The moderating relationship could be shown to be mediated by employees’ state self-esteem.     

A Survey of Agricultural Household Models: Recent Findings and Policy Implications

Semicommercial farms that produce multiple crops make up a largepart of the agricultural sector in developing economies. Thesefarms or agricultural households combine two fundamental unitsof microeconomic analysis: the household and the firm. Traditionaleconomic theory has dealt with these units separately. But indeveloping economies in which peasant farms dominate, theirinterdependence is of crucial importance. Researchers at theFood Research Institute, Stanford University, and at the WorldBank have developed models of agricultural households that combineproducer and consumer behavior in a theoretically consistentfashion. Recent empirical applications of these models haveextended them and expanded the range of policy issues whichcan be investigated using this general framework. This article reports the results of empirical applications ofthis model in India, Indonesia, Japan, the Republic of Korea,Malaysia, Nigeria, Senegal, Sierra Leone, Taiwan, and Thailand.It provides a comparative analysis of the policy implicationsof the approach for such matters as the welfare of farm households,the size of marketed surplus, the demand for nonagriculturalgoods and services, and for hired labor, and the availabilityof budget revenues and foreign exchange.