In last decades the spreading of new buildings, road infrastructures and a scattered proliferation of houses in zones outside urban areas, produced countryside urbanization with no rules, consuming soils and impoverishing the landscape. Such a phenomenon generated a huge environmental impact, diseconomies and a decrease in life quality. Although urban growth is perceived as necessary for a sust...

This research was conducted to identify the limitative factors of forage productionsuitability in order to achieve the sustainable exploitation of natural ecosystems in AliabadWatershed in Lorestan in 2013. The field measurements have been done through cutting andweighing method to estimate the forage amount, four-factor method to determine the rangecondition, trend scale to specify the orienta...

In this paper we describe some requirements which an ideal geographic information system (GIS) must meet to cope with the challenges of the future. We look at data modelling, the integration of geographic information science and photogrammetry, update and refinement of a geospatial database, and data integration. We claim that data modelling needs to be carried out in 3D based on a topologic da...

This paper proposes, a hardware implementation of Wireless Mesh Networks (WMN) medium Access Controller (MAC) layer transmitter. In the literature a lot of works are focused on WMN routing protocol as well as performance analysis and software integration of WMN units, however few works deals with WMN hardware implementation. In this field our contribution is to conceive and to implements on FPG...

one of the most important issues that faced cities in developing countries with a crisis is expanding informal settlement in them. these settlements with differences in definition are known as occupational, changing, marginal, self-made and uncontrolled housing. it is estimated that about 1 billion man in all over the world live in such kinds of places. these zones are the texture for creation ...