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Water is a resource that already has been affected by some aspects of global change and whose availability in time and place may be substantially further altered by global warming. As human demands and impacts on water resources have increased, institutions governing water use have evolved in response to pressures exerted by competing resource users. The record of such institutional evolution and its implications for the impacts of environmental change on human welfare can provide a glimpse of issues that are likely to arise as other natural resources are increasingly subject to the effects of global environmental transformations. Efforts to manage multiple interdependent water uses present informative analogies to the general problem of managing the many interrelated aspects of global change.  相似文献   

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Since 1986, presidents have been required to submit an annual National Security Strategy (NSS). Recent years have seen a proliferation of national strategies of other kinds, linked in part to the NSS. The National Security Council, led by the national security advisor and employing its committee system and the interagency process, develops the NSS. The integration of all the necessary elements within the NSS involves an opaque and irregular set of rolling negotiations among national security principals. The 2006 NSS is best viewed in comparison to the 2002 version, which was issued in the immediate aftermath of 9/11. It stipulates that the United States is at war with transnational terrorism fueled by a perversion of Islam and proposes stable democracy as the primary solution, supported by aggressive efforts to control the proliferation of weapons of mass destruction and the option of taking preemptive military action. Criteria for assessing national security strategies can be process oriented or results based.  相似文献   

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The U.S. Global Change Research Program (USGCRP) was established in law in 1990 (P.L. 101–606) with a mandate to provide policymakers with usable information. The law gave a White House Committee on Earth and Environmental Sciences (CEES) responsibility to implement the program with respect to its policy mandate. In 1994 CEES was replaced, in part, because it failed to provide usable information. This article, documenting the development of the program's policy mandate and CEES implementation of the USGCRP, finds a performance shortfall. The shortfall is attributed to a breakdown in the legislative process, participant perspectives, and the structure of post-World War II science policy. The purpose of the article is to explain the CEES performance shortfall in hope that its successor can improve USGCRP performance with respect to its legal mandate based upon the lessons of experience.  相似文献   

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There are a growing number of U.S. space scientists and managers calling for reinitiating cooperation with China in space. It is well-known that investigations of the U.S. Congress into various allegations involving China have resulted in a series of laws curtailing space cooperation between these two countries. By surveying the concurrent political developments within the United States in the 1980s and 1990s, this article attempts to reveal the domestic compulsions that propelled changes in the U.S. space policy towards China. The fundamental impetus is the power struggle and differences between the U.S. president and Congress in their perception of U.S. economic interests and national security in the context of space technology that strained these relations. Recent U.S. presidents who inherited this situation added to the discourse based on their own perceptions about outer space and China. These perceptions either found congruence with the policy of the U.S. Congress or led to finding ways to circumvent its legal restrictions. Based on these developments, it is concluded that the view of the U.S. president has alternated between necessary, desirable, and objectionable on the issue of U.S.-China space cooperation, and the U.S. Congress has thus shifted from supporting to restricting and then legally banning cooperation.  相似文献   

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Using a framework of geopolitical analysis. Oliver Lee argues that the fundamental geopolitical relationships between the United States and China, namely the relationship between the world’s strongest naval and air power and the world’s strongest land power, would not be upset even after the American military presence in central Asia since September 11, 2001. The relationship would remain essentially unaltered because — American initiation of the use of nuclear weapons against China being ruled out for fear of Chinese retaliation — China would be able to withstand any U.S. military offensive conducted with conventional land, sea, and air forces, regardless of whether the U.S. possesses permanent air bases in Central Asia or not, and regardless of how many troops it may station on them. His teaching and research interests include domestic and foreign policies of China and power in America and U.S. foreign policy.  相似文献   

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朝鲜战争是第二次世界大战以来在亚洲地区进行的一场规模最大的局部战争。是以美国为首的“联合国军”的失败和中朝人民的胜利而载入史册的。本文试就关系到战局胜负的毛泽东的战略策略思想作……  相似文献   

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This research considers whether there is evidence of legislators' issue avoidance, or unwillingness to reveal one's position. It links, for the first time, two important areas of inquiry: legislative decision making and issue avoidance. The data describe senatorial behavior over eighteen years, involving approximately 200,000 individual voting decisions. During that time, senators were polled by CQ after each missed roll call, and asked to indicate their positions. Issue avoidance is a subset of the nonresponses to that poll. A conceptual model of voting and position taking is presented, incorporating both behaviors and intentions. It defines two kinds of issue avoidance: proactive, deliberate avoidance at the time of the roll call, and reactive, avoidance decided on after votes missed inadvertently. Application of the model permits inferences about intent. Proactive avoidance accounts for 12% of nonvoting during the terms' first five years. It also represents 40% of failures to reveal positions. As much as another 19% of nonvoting results in reactive avoidance. A sixth-year increase in issue avoidance is indicated, although not conclusively. The findings strongly suggest that models of legislative voting should be amended to account for both proactive and reactive avoidance.  相似文献   

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International social security agreements are advantageous both for persons who are working now and for those whose working careers are over. For current workers, the agreements eliminate the dual contributions they might otherwise be paying to the social security systems of both the United States and another country. They also favorably affect the profitability and competitive position of American companies with foreign operations by reducing their cost of doing business. For persons who have worked both in the United States and abroad, and who are now retired, disabled, or deceased, the agreements often result in the payment of benefits to which the worker or the worker's family members would not otherwise have become entitled. Credit for social security coverage the worker earned in the United States and the other country can be combined, if necessary, to meet eligibility requirements, and partial benefits can be paid by one or both countries. Because international social security agreements benefit both workers and employers, the agreements program is supported by organized labor and the international business community. Since the first agreement was signed 15 years ago, every Presidential administration has endorsed the program. In view of this support, and the fact that the agreements enhance the image of the United States as a socially progressive member of the international community, it is expected that totalization agreements will be concluded with additional countries in the future.  相似文献   

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Journal of Chinese Political Science - The Sino-U.S. relations tumbled during the Trump Administration. The talk of decoupling permeated the decision-making circle in Washington D.C. Many factors...  相似文献   

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Apartheid U.S.A.     
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