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This article first describes the new literature in environmental economics on the so‐called “double‐dividend” and then explores its implications for a broad range of economic issues. This literature reveals that in a second‐best, general‐equilibrium setting, environmental measures raise costs and prices and thereby reduce the real wage. This rise in the cost of living reduces slightly the quantity of labor supplied in an already highly distorted labor market, giving rise to losses in social welfare that can be large relative to the basic gains from a cleaner environment. These losses can be offset to some extent by using revenues (if any) from the environmental programs to reduce existing taxes on labor. This same line of analysis applies to many programs and institutions in the economy that raise the cost of living: tariffs and quotas on imports, agricultural price‐support programs, monopoly pricing, programs of occupational licensure that limit entry, and many others. Thus, traditional, partial‐equilibrium benefit‐cost analysis appears, in many instances, to have unwittingly omitted from the calculations a potentially quite significant class of social costs. © 2000 by the Association for Public Policy and Management.  相似文献   
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The emergence of mobile phones with built-in digital cameras is creating legal and ethical concerns for school systems throughout the world. Users of such phones can instantly email, print or post pictures to other MMS1 1. MMS stands for Multimedia Messaging Services. MMS is frequently used to send photos from camera phones to other MMS phones or email addresses. View all notes phones or websites. Local authorities and schools in Britain, Europe, USA, Canada, Australia and elsewhere have introduced outright bans on their use because of the problems or risks they pose if misused. Risks concerned with pupils surreptitiously photographing other pupils in changing rooms or photographing examination papers are obvious examples. The article examines some worldwide examples of the misuse of camera phones in schools and the issues and problems that emerged. A landmark decision concerning the European Data Privacy Directive (Directive 95/46/EC) in the case of Bodil Lindqvist by the European Court of Justice is explored and the implications for camera phones considered. The article concludes by stating that because of their ubiquity and social potency, it is probably a mistake and an overreaction for education authorities or schools to introduce blanket bans on the possession of camera phones. Rather they need to devise sensible agreements and policies on camera phone usage.  相似文献   
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The United States Supreme Court ruled unanimously in the case of Owasso Independent School District v. Falvo that the practice of students grading each other's work and then calling out the marks does not violate the Family Education Rights and Privacy Act (FERPA) 1974. The Court reversed the decision of the U.S. Court of Appeals (10th Circuit). The judgment came in the case of a mother, Kristja Falvo, who objected to the practice of peer grading and recording in elementary schools. She felt that the practice was a violation of FERPA. Student grades, she argued, were an education record and should not be released to others in the class without a parent's permission. However, the Supreme Court ruled that such grades did not satisfy the definition of an 'education record' under FERPA. The judgment is significant. Teachers' organisations and bodies representing administrators welcomed the decision.  相似文献   
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