نتایج جستجو برای: north africa
تعداد نتایج: 261394 فیلتر نتایج به سال:
پژوهش حاضر در چهار فصل و یک بخش پایانی مورد بحث و بررسی قرار گرفته است. در فصل اول به کلیات پژوهش پرداخته شده است در فصل دوم به بررسی نظریه های جهانی شدن و منطقه گرایی و همگرایی پرداخته شده است. در فصل سوم به آشنایی با منطقه خاورمیانه و شمال آفریقا اختصاص داده شده است و در فصل چهارم به اثار و تبعاد جهانی شدن بر منطقه گرایی در خاورمیانه و آفریقای شمالی پرداخته شده است لازم به ذکر است که فصل چهار...
Background and Aim: In this paper, contribution rate of health capital in economic growth is computated. Materials and Methods: In order to this, fuzzy neural network method is applied on statistical data from Middle East and North Africa countries in the period of fifteen years (1996-2010). Results: The obtained results present that contribution rate of health capital in economic growth ...
Determining the timing, identity and direction of migrations in the Mediterranean Basin, the role of "migratory routes" in and among regions of Africa, Europe and Asia, and the effects of sex-specific behaviors of population movements have important implications for our understanding of the present human genetic diversity. A crucial component of the Mediterranean world is its westernmost region...
Although the HIV pandemic is witnessing a decline in the number of new infections in most regions of the world, the Middle East and North Africa (MENA) has a rapidly growing HIV problem. While generating HIV data has been consistently increasing since 2005, MENA’s contribution to the global HIV literature is just over 1% and the existing evidence often falls behind the academic standards. Sever...
This study presents the first quantitative estimate of the mineral dust emission associated with atmospheric depressions and migrating, long-lived cyclones in North Africa. Atmospheric depressions are automatically tracked at 925 hPa based on ERA-Interim data from the European Centre 5 for Medium-Range Weather Forecasts for 1989−2008. A set of filter criteria is applied to identify migrating, l...
In this study, we use a sophisticated highresolution atmosphere-ocean coupled climate model, ECEarth, to investigate the effect of Mid-Holocene orbital forcing on summer monsoons on both hemispheres. During the Mid-Holocene (6 ka), there was more summer insolation on the Northern Hemisphere than today, which intensified the meridional temperature and pressure gradients. Over North Africa, monso...
The European wasp, Vespula germanica (Fabricius) (Hymenoptera: Vespidae), is of Palaearctic origin, being native to Europe, northern Africa and Asia, and introduced into North America, Chile, Argentina, Iceland, Ascension Island, South Africa, Australia and New Zealand. Due to its polyphagous nature and scavenging behaviour, V. germanica threatens agriculture and silviculture, and negatively af...
The ancestors of present-day man (Homo sapiens sapiens) appeared in East Africa some three and a half million years ago (Australopithecs), and then migrated to Europe, Asia, and later to the Americas, thus beginning the differentiation process. The passage from nomadic to sedentary life took place in the Middle East in around 8000 BC. Wars, spontaneous migrations and forced migrations (slave tr...
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