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تعداد نتایج: 3718247 فیلتر نتایج به سال:
Recent estimates suggest that landslides occur in about 17.1% of the landmasses, 8.2% global population live landslide prone areas, and exposure to is expected increase. It threfore not surprising early warning gaining attention scientific technical literature, among decision makers. Thanks important technological advancements, prediction are now possible, systems (LEWSs) becoming valuable reso...
The Three Gorges Region in China is currently subject to a large-scale land use change, which was induced by the construction of the Three Gorges Dam on the Yangtze River. The relocation of towns, villages, and agricultural areas is expected to affect the water balance and increase erosion rates and sediment yields in the affected catchments. Hydrologic and water quality models are frequently u...
This paper gives a synthesis of this special issue on the sensitivity to climate change of the main bio-physical processes in the Hindukush-Karakoram-Himalayas. It also describes the impacts on the water resources with a special focus on the Ganges. Consequences of changes in water resources and possible adaptation measures for different sectors are discussed.
A pilot scheme was set up in Hampshire in January 1970, in which a local health authority doctor was "attached" to a group of general practitioners to carry out developmental assessment on infants and young children. Older pre-school children are also seen when necessary, and in all cases possible future educational requirements are considered. Such a scheme reduces duplication of work, increas...
Catchment management is becoming a more complex task. The sharing of water resources between traditional water users and the environment, the introduction of water and contaminant trading and water quantity and quality targets has necessitated a whole-of-catchment modelling approach. A variety of software products address this need. They range from abstract, general-purpose modelling frameworks...
wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...
This paper is a critique on contemporary non-market valuation study. We argue that the consumer value (willingness to pay (WTP)) derived from contingent valuation method or other methods is a poor guideline for resource allocation and cost–benefit analysis. Only shadow value is meaningful for the public and decision makers in resource allocation. Shadow value is the value to the society, or exc...
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