نتایج جستجو برای: environmental crisis
تعداد نتایج: 438273 فیلتر نتایج به سال:
We address the debate surrounding the current status of the U.S. environmental movement. Using measures of ecological and public policy impact, we show that the U.S. environmental movement has failed to prevent the continuing negative growth of the U.S. ecological footprint and, since the early 1990s, has been blocked in its national legislative agenda. We trace this failure to the dominance wi...
The Aral Sea was once the fourth largest inland body of water on earth with a surface area of 66,000 km. In 1960, the mean water level was 53.4 m and it contained 1090 km of water (Glantz 1999). The destruction of the sea and its ecosystems constitutes one of the greatest man-made environmental disasters in history. The ecological catastrophe has been associated with a sharp decline in the heal...
the issue of water resources and their effect on human life doesn't need any analysis and reasoning. however, such factors as population growth, improved quality of life and development of urbanization along with improved industrial and technological dimensions of human life have necessitated logical and reasonable planning for optimal use of water and water basins of the world. these fact...
abstract global financial crisis has created too many problems in relations among governments. among these problems, the issue of global monetary management, more than every time in the past four decades, has been moved in the center of international economic attentions. a problem which is specially known with the monetary hostility between united states and public republic of china. where ar...
1 BACKGROUND 2 Honduras Environmental Crisis 2 The Mosquitia Region, a Land of Conflicts 3
INTRODUCTION: Crisis management maintains security, stability, and flexibility in society by integrating different social resources with appropriate decisions and strengthening the ability of the community to recover from the negative impacts. Therefore, the present study aimed to conduct a model analysis of effective factors in implementing crisis management policies. METHODS: The present stu...
Migration is a common behavior used by animals of many taxa to occupy different habitats during different periods. Migrant birds are categorized as either facultative (i.e., those that are forced to migrate by some proximal cue, often weather) or obligate (i.e., those that migrate on a regular cycle). During migration, obligate migrants can curtail or delay flights in response to inclement weat...
Drag coefficient (Cd) is an essential metric in the calculation of momentum exchange over the air-sea interface and thus has large impacts on the simulation or forecast of the upper ocean state associated with sea surface winds such as storm surges. Generally, Cd is a function of wind speed. However, the exact relationship between Cd and wind speed is still in dispute, and the widely-used formu...
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