beech forests in midland areas of hyrcanian forests of iran are the most important forests having the highest degree of naturalness. these forests are the valuable source of wood production and other forest products. one of the most important characteristics of plant communities is the spatial pattern of trees. ecological process in forest ecosystems are directly influenced by the spatial patte...

population density and spatial distribution of thrips tabaci lindeman on seven soybean varieties (williams, tellar, sahar, dpx, l17, sari and zane) and one genotype (ks3494) were studied in tehran region, during 2007. the highest population density of the thrips per leaf was recorded on dpx and on ks3494 (0.810.05 and 0.800.05, respectively). the lowest population density was observed on l17 ...

The architecture of houses, design and management are a collection of behaviors that are realized in space. The recognition of traditional houses requires having space in possession; that is to say, seeing the building and seeking the key to appreciating it. On the one hand, it refers to the different dimensions and features of the building and on the other, it represents the main objectives of...

a field experiment was conducted to investigate the spatial distribution of nutsedge (cyperus spp) during rice growing season using geostatic in 2011 at sari agricultural sciences and natural resources university. at the first field was divided into 36 grids (2.5×2.5 meter) after the final preparation. grid intersection points were determined and marked. all samples were taken from these points...

background: myocardial infarction (mi) is a leading cause of mortality and morbidity in iran. no spatial analysis of mi has been conducted to date. the present study was conducted to determine the pattern of mi incidence and to identify the associated factors in iran by province. materials and methods: th is study has two parts. one part is prospective and hospital-based, and the other part is ...

Pattern formation is crucial for maintaining biodiversity and cooperation in nature and human society. We review recent works on the formation of spatial patterns in the framework of evolutionary games, involving rock-paper-scissors game and social dilemmas. The rock-paper-scissors game, as a basic paradigm for characterizing nonhierarchical cyclical competition in ecosystems, has been widely u...

Abstract: The spatial pattern analysis can be used to discover the distribution of people’s behaviors in space. Traditional spatial pattern analysis does not consider the decision making process of human activities. This paper presents two adjusted spatial choice models that include models of decision-making process. These new adjusted spatial choice models are applied to detect the spatial pat...