In recent years, the Internet is a major media to convey digital contents. Users can purchase or exchange the digital contents via the Internet. Due to the security problems of the Internet, mutual authentication between users must be ensured before exchanging digital contents. In addition, how to exchange the digital contents fairly via the Internet is another major problem since users may not...

This paper empirically investigates the determinants of supermarkets’ assortments at U.S. supermarkets. We first observe that, across several product categories, the top selling items which cumulatively make up 50% of sales are viewed as core products which are sold at nearly every store. However, once the product is not a top seller, stores start to view stocking the products as optional. We t...

The selection of the best suppliers is a key issue for many companies. Nevertheless, it is important to highlight that the most economical supplier may not be the one that has the lowest purchase price. The cheapest supplier is the one that represents the lowest cost to the company, after being considered various aspects of supplying, such as quality, reliability of deliveries, the history of s...

this study examined the relationship between psychological ownership dimensions and deviant behavior of physical education teachers in bojnourd city. this study was applied in terms of aim and descriptive - correlation in terms of data collection. the statistical population consisted of male and female physical education teachers in bojnourd city (n=160) and 113 teachers were randomly selected....

Abstract This paper studies the effect of trade opportunities on a seller’s incentive to acquire information through experimentation. I characterize unique equilibrium outcome and discuss effects variations in structure probability trade. The main result is that more accurate for buyer can reduce social welfare. Efficiency requires offers price seller always accepts experiments when it socially...

The starting point of this article is the result of one ultimatum game experiment one of many showing a huge deviation from the predictions of micro theory. However, further analysis gives an explanation of subject behavior that deserves to be seen as rational, if assumptions, such as a total secrecy resulting in no effects on reputation, are questioned. Respondersí actual behavior can be under...