نتایج جستجو برای: among different depths f2264
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data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
The natural electric field at the depth of 0 ∼ 1500 m in high seas South China Sea is obtained by using a new type measuring device. data 0.01 0.5 Hz and 30 frequency range are analyzed respectively. results show that induced generated surface wave (about 0.14 experiment) obvious 50 but can be ignored greater than 100 m. When increases from to m, peak-to-peak value gradually decreases. At 1000 ...
China is a country that is arousing a large amount of interest as a new mega-market, as it opens itself to a market-orientated economy and expands at a remarkable rate. However, the influx of international investment, new business opportunities and advertising from overseas has seen Chinese consumers being exposed to potentially offensive advertising products and images. While some products and...
abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...
The reference to ethnicity in the 2012 National Suicide Prevention Strategy for England (1) is mainly with regard to promoting mental health in Black and Minority Ethnic (BME) groups. However, there is little detailed information about any specific strategy to reduce suicide rates in BME groups. The Suicide Prevention Strategy and Action Plan for Northern Ireland has only one brief reference re...
cultural iran is a scope that is more extended than the political territories of iran as a political unit. this concept means that cultural geography(mehdi moghanlo-1383-1) of iran is greater than its political geography which, according to history, has a long history extending west-east from kandahar to the euphrates and north-south from the persian gulf to the caucasus including transoxiana a...
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
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