The aim of this study was modelling the spatial distribution ofLilium ledebourii (Baker) Boiss. based on ecological characteristics, in order to predict potential habitats for conservation of a rare plant. Knowledge of the spatial distributions of rare and threatened species and the underlying ecological factors plays an important role in regional conservation assessments and development planni...

The planning and operational issues of distribution systems have attracted more and more attentions from researchers with the development of Smart Grids. A new integrated planning model of distribution systems and the solution methods are proposed in this paper to investigate the way of improving the economy and reliability of distribution system planning by making full use of distributed gener...

Economic and social changes in recent decades led to regional imbalance and inordinate concentration of facilities in some parts and bereavement of other parts. We need to district and regional planning which its objective is providing an appropriate model for balanced distribution of services according to population of settlements or spatial balance in the region. The topics of sust...

this survey is a descriptive analytic study which was carried out to assess the effects of population control programs on national health development in islamic republic of iran (1986-1998). the objectives of the study are: 1)to determine the effects of family planning program on national health development ( 1986-1998). 2)  to indicate the relationship between family planning coverage and some...

structural characteristics and spatial distribution of major farming systems in mountain environment of the iranian plateau as well as their developments in the past few decades have been studied by statistical analysis. using this new approach, towards the study of natural resource allocation methods in mountains of iran, the following resulted: land and resource use practices have followed a ...

the aim of this research is to analyze the environmental principals which are used for land use planning of iranian communities in order to determine whether they are sufficient and efficient for conserving and improving the quality of urban environments or not. first, the environmental principals were extracted from municipal local plans (community plans) of the spatial planning systems of ira...

One of the major obstacles in the process of national development, is the disruption in regional balance construct. As has been noted in some studies the existence of regional inequity leads to domination of some regions to surrounding regions and causing political and economic challenges in developing countries. And given that transportation is one of the components of region, undoubtedly equi...