Wavelet Analysis of the Bombay Stock Exchange Index

The fluctuations in the rate of returns of the Bombay stock exchange are analyzed through wavelet transform. The fluctuations, in various time scales, naturally separated by the wavelets, are subjected to statistical analysis. The localization and multiresolution properties of the wavelets enable one to identify collective behaviour in the stock market and the extent of their influence at various time scales. The Gaussian nature of the rate of returns at certain scales and the periodic nature of the same, at other scales, are clearly brought out by this analysis. The utility of this approach for modeling purpose is also elucidated.

     

Ethics in Small Minority Businesses

The management literature is replete with studies on business ethics. Unfortunately, most of these studies have dealt exclusively with ethics in large businesses. Although a handful of studies can be found on small business ethics, none has paid attention to the issue of ethics in small minority businesses. Similarly, several studies on ethics have utilized the Wood et al. (1988) 16-vignette ethics scale, although reliability and validity issues associated with the scale have never been fully addressed. In this study, a purification (via content analysis) of the above mentioned scale was performed. Three reliable factors were extracted from the purified scale. They were used to investigate the ethics in small minority businesses. The study found an association between business ethics and demographic and company-related variables. In the case of age of respondents, findings ran counter the usual relationship of age being positively related to ethical attitudes. The implications of these findings are also discussed.     

Perceptions of Indian business organizations toward formal marketing research

The results reported in this article are based on a mail survey of 219 firms in India. The major purpose of the study is to examine the marketing research experiences of Indian business firms and their perceptions about conducting formal marketing research. Results indicate that 45 percent of Indian firms have had some experience with formal marketing research and have positive perceptions concerning marketing research as an important decision making tool. Size and type of firm were found to influence whether formal marketing research is conducted. Research methodologies used in India are presented along with problems encountered by these practitioners.