one priority of planning at the regional level is to recognize the system of residence and particularly its urban system. one of the features of urban system in each area or country is the way of population distribution between the cities of these areas which is called city distribution size. in functional analysis of mazandaran province 41 development indexes of educational, cultural, social, ...

numerical taxonomy and seed storage protein analysis of hyoscyamus species of iran was carried out with the aim to illustrate species inter-relationship and to check the sub-generic taxonomic treatment proposed for the genus. cluster analysis of morphological and protein data grouped the species in three separate clusters which supports the relationships of h. niger with h. reticulatus and h. k...

today, the knowledge of regions’ strong and weak points and the existing gaps between regions is necessary for better planning and programming to deal with them. using such indexes as economic, sociologic, cultural, sanitary and other indexes which can be good criteria for the position and place determination of these quotients, is the main solving problem factor to achieve economic welfare, so...

the members of anopheles maculipennis subgroup (diptera: culicidae) are the most important vectors of malaria in the north, west, and central plateau of iran. this study was carried out to differentiate the species composition of this subgroup based on morphometric variation seta 2-iv and v (antepalmate hair) among 149 larval specimens that were deposited at the medical arthropods museum, the s...

background: in today's world, survival of any organization depends on its competitiveness and suitable decisions against environmental changes.  one of the effective methods in organizations is to use performance evaluation systems to determine weak points to be improved and strengths to be reinforced. performance evaluation and management not only help organizations to increase competitiveness...

due to increasing importance of desertification challenges and its consequences the necessity of sustainabledevelopment achievement in arid and semi-arid regions is essential in order to avoid limited sources asting, increase the efficiency of controlling, reclamation and restoration projects of natural areas. based on the iterature review, it has been recognized that combating desertification ...