Taking possession of space as a strategic asset is the priority of the geographic policy of the countries. The fragmented Middle East spaces that have been formed following the lack of power of  fragile states, such as Iraq and Syria in the Middle East, have created a conflict of interest between the new subjects and the dominant geopolitical structures in the Middle East. These spaces have bee...

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 ...

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Aims & Backgrounds: The US and the Soviet Union led the east and the west camps during the cold war and the geopolitical order was laid on the foundation of the rivalries between these two superpowers. But, after the collapse of the bipolar system, the US became the undisputed power in the international arena and the geopolitical order underwent changes during three decades after that and the c...