Contagious diseases and tourism: a systematic review based on bibliometric and content analysis methods

Quality & Quantity - The present study examines the existing knowledge and intellectual structure on contagious diseases and tourism to map the development of the concept through collaborative...     

A note on the consistency of maximum likelihood estimators

Abstract

A sequence of maximum likelihood estimators based on a sequence of independent but not necessarily identically distributed random variables is shown to be consistent under certain assumptions. Some examples are given to show that these assumptions are easy to verify and not very restrictive.     

Unemployment,insurance and smoking

Using recent state-level data from the United States, this article examines new influences on cigarette demand. In particular, we uniquely focus on the effects of unemployment and health insurance coverage on smoking. Results show that higher cigarette prices, a lack of health insurance and restrictions on smoking at home, all lead to reduced smoking. On the other hand, literacy, income, unemployment, workplace smoking restrictions, smokeless tobacco taxes and tobacco-producing states do not seem to have an appreciable impact. The magnitude of the price elasticity of demand is greater than that found in the pre-MSA era. Policy implications are discussed.     

The mediating effect of information availability between organization design variables and environmental practices in the Canadian hotel industry

This study examines whether providing employees with information about environmental impacts, industry practices, technologies, regulations and benchmarking of environmental practices mediates the influence of organization design variables on environmental impact reduction. The study finds that both organization design variables (discretionary slack, coordination mechanisms and performance evaluation) and information availability have a direct influence on environmental impact reduction practices in the Canadian hotel industry. However, information availability partially mediates the influence of organization design variables, indicating that effecting changes in organization design alone may be less effective in generating proactive environmental practices without providing employees with information and benchmarking of industry environmental practices. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.     

Quality dualism

We suggest a theory of quality dualism, defined in terms of the gap between the highest quality good produced in the informal sector and the lowest quality produced in the formal sector. We develop a model of vertically differentiated products, in which firms producing in the formal and informal sectors face different factor prices, and have a relative advantage in the manufacture of different qualities. We then use the model to examine the cyclical behavior of the respective sizes of the two sectors. Finally, we point out that factor price changes, which reduce or increase the size of the informal sector, may have the same or opposite effect on the degree of dualism in the economy.