models of living in cities needs planning for land use. those who have planned for the cities have studied land use to present a model for the construction of cities. change of land use, is the main concern today. the factors which affect the change in land use can be divided into three main groups: legal factors, economical factors and population. out of these three factors, population has bee...

This paper presents research into optimal dispersion models as applied to central places. The literature regarding location optimization and central places is reviewed and the motivation for employing dispersion models is identified. Models that employ the objective of maximal dispersion in the context of central places are formulated and solved in the context of both singleand multiple-good sy...

Temporal planning considers temporal dependencies and numeric resources. As a further step towards real-world applications, it has been attracting many attentions and triggered some great work. Recently, most of those works are based on heuristic search, e.g., in the work of Sapa (Do and Kambhampati 2003), LPG (Gerevini et al. 2008), SGP (Chih-wei et al. 2008) and TFD (Eyerich et al. 2009). In ...

Artificial recharge can be an effective method to raise the groundwater table and to resolve the groundwater crisis in Sefid dasht plain. The most important step to successful accomplishment of artificial recharge is locating suitable areas for artificial recharge. Hence this research carried out with purpose of determining suitable areas for artificial recharge in Sefid dasht plain. Slope, sur...

in this study, thermoplastic polyolefin elastomeric (tpo) nanocomposites were fabricated by friction stir processing. the effect of different pin geometries on clay dispersion and mechanical properties of the tpo nanocomposite reinforced with 3% wt nanoclay has been first investigated. the optimum pin geometry namely threaded cylindrical pin was then used to fabricate the nanocomposites contain...

Land degradation, or desertification, is specific to arid, semi-arid, and dry sub-humid regions. The rate of thisphenomenon is high in developing countries such as Iran. This research investigated desertification and mapping ofdesertification in Abuzaydabad, near Kashan, Iran, with an emphasis on land criteria using an IMDPA model.Different studies have assessed land degradation or desertificat...