background: sediments are inseparable fractions of wetland ecosystems that work as a his-torical archive in the process of recording heavy metal aggregation changes. this study was carried out for assessing co, ni, and zn in sediment samples of mighan wetland using geo-accumulation index in 2013. methods:the sediment samples were taken from 11 stations. the samples were subjected to bulk digest...

although on the basis of geo-economic theories, study of energy-related issues is of strategic importance to all countries, energy resources are no more restricted to oil and gas reserves as was the case during the past century. of course, these resources are still key elements of global energy reserves. today, in addition to geo-politics and geo-economics, the concept of hydro-geopolitics puts...

Since the Cold War, the Japan-U.S. Security Treaty has been the lynchpin of the regional security architecture. The alliance served as the key mechanism to ensure U.S. military presence and commitment to the Asia-Pacific. In addition to the modernization of Japan Self Defense Force (JSDF) military capabilities, U.S. military presence manifested through bases in Japan, and Japan-U.S. military co...

Geostrategic positioning of the state—applied substructure political geography and geopolitics that investigate forming independent state’s functions azimuths its international relations. Present article explores general regulations advanced states on modern map world (spatial compression economy, composition states’ geopolitical “powers,” structure dynamics “World Order” systems, so on). Simul...

after the collapse of the soviet :union: and the formation of a new world order, the nature of power changed from exclusively military to a combination of military, economic and political one; and consequently the new discourse of geo-economics emerged alongside the geo-politics. since then, most countries have tried to maximize their relative power positions in the international system by emph...