This article finds that with the development of network technology and the change of a users' social habits, the existing multimedia social network, whether it is one-to-one authorization or one-to-many authorization, are having difficulty meeting the needs of users and cloud storage service. In...

A number of recent studies show that males may increase their performance by more than females in response to competitive incentives. The literature suggests that such a male competitive advantage may contribute to observed gender gaps in labor force pay and achievement. Understanding which...

We develop a model of policymaking in which a politician decides how much expertise to acquire or how informed to become about issues before interest groups engage in monetary lobbying. For a range of issues, the policymaker prefers to remain clueless about the merits of reform, even when...