Yet another look at temporal aggregation in diffusion models of first-time purchase

This paper gives yet another look at the impact of temporal aggregation on the parameter estimates for the familiar Bass diffusion model. It is shown that aggregation leads to larger values of the innovation parameter p and that it is leads to smaller values of the imitation parameter q, at least in theory. The last finding is in contrast with the results in Technological Forecasting and Social Change [51 (1996) 265]. We use simulation experiments to substantiate our results.     

Patterns of social reporting from an Islamic framework and the moral legitimacy factors that influence them

The objective of this study is twofold: to examine the patterns that govern social reporting with reference to an Islamic framework and to identify the moral legitimacy factors that influence them. We select 146 publicly listed Sharia‐compliant companies and classify the disclosures in their annual reports according to an Islamic framework that categorises items as either Required, Expected or Desired to indicate the degree of importance each item carries from an Islamic perspective. Based on this framework, we then analyse moral legitimacy factors, specifically the type of Sharia screening body and the proportion of Muslims in the population, that may influence the prioritisation of the different categories of social reporting. We find that disclosures that fall into the Required category of our framework—especially those that relate to companies’ involvement in “haram” activities (activities not permissible in Islam)—are still few among the companies studied. Our research also reveals that both moral legitimacy factors under investigation influence the three categories of social reporting, although in different ways. This research contributes to the existing literature by empirically examining how organisations prioritise their disclosure of virtues and the moral legitimacy factors that influence that prioritisation.     

大学毕业生面向非公有制单位就业存在的问题及对策

本文阐述了当前我国大学毕业生面向非公有制单位就业所存在的主要问题 ,并从多角度探讨了解决问题的办法