استفاده از خروجی مدل‌‌های گردش کلی جوّ - اقیانوس (AOGCMs) به‌منزلة معتبرترین ابزار در تحقیقات تغییر اقلیم، در حال افزایش است. تاکنون نسخه‌های گوناگونی از مدل‌های AOGCM عرضه شده است که از آن جمله می‌توان به مدل‌های اولین گزارش ارزیابی هیئت بین‌المللی تغییر اقلیم (IPCC) تحت عنوانFAR(1990) ، مدل‌های دومین گزارش با عنوان SAR(1996)، مدل‌های سومین گزارش با عنوان TAR(2001) و مدل‌های چهارمین گزارش ارزی...

استفاده از خروجی مدل های گردش کلی جوّ - اقیانوس (aogcms) به منزلة معتبرترین ابزار در تحقیقات تغییر اقلیم، در حال افزایش است. تاکنون نسخه های گوناگونی از مدل های aogcm عرضه شده است که از آن جمله می توان به مدل های اولین گزارش ارزیابی هیئت بین المللی تغییر اقلیم (ipcc) تحت عنوانfar(1990) ، مدل های دومین گزارش با عنوان sar(1996)، مدل های سومین گزارش با عنوان tar(2001) و مدل های چهارمین گزارش ارزیاب...

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...

abstract u.s. attack to afghanistan after 9/11 provided opportunities for us who tried to become the dominant power after collapse of ussr and bipolar world. thinkers like fukuyama believed american liberal democrats thought would be universally accepted without resistances. liberal democracy is the best and final model of governance; in this regard, united state has moral responsibilities for...

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...