نتایج جستجو برای: golestan province using systematic classified random sampling method
تعداد نتایج: 4871209 فیلتر نتایج به سال:
nowadays, occurrence of mass movement in the northern forests ofiran, especially in the golestan province is turning to be a usual phenomenon. because of decay of vegetation cover, prediction of landslide occurrence will prevent its damages. landslide hazard zonation is a suitable way in this case. selection of the best model is a way to decrease costs and time. consequently, land slide hazard ...
Oak decline as one of the most important environmental problems of Zagros forests, requires proper management to decrease trees dieback and mitigate its effects. This study aimed to find the best sampling method for estimating density and crown canopy of declined oak trees in Zagros Forests. All declined trees in an area of 100 ha of Dinarkooh protected forest were surveyed and trees density, g...
Background and purpose: Due to inadequate quantity and low quality of water resources in rural regions of Gomishan (Golestan province), local residents use cisterns for household water. Therefore, it is necessary to investigate the hygienic situation of these cisterns. Materials and methods: In this study, water samples were obtained from 31 villages using random sampling (two times; t...
objectives: to determine the behavioral pattern of golestan university of medical science (gums) students as pedestrian and car occupants in relation to traffic law based on health belief model. methods: this cross-sectional study was performed during 2012 in gums. a total of 370 students of gums were selected using multi-stage sampling method including stratified and random sampling. data were...
In order to investigate and consider the feasibility of the establishment of knowledge management at Payam nour universities of Golestan province elicited from reviewing the research literature, the researchers endeavored to identify the factors affecting the establishment of knowledge management and the knowledge management components, and then to consider the way of their influence as wel...
Background and Aim: Leprosy is a chronic infectious disease that typically affects the skin and peripheral nerves and can cause irreversible disabilities. The objective of this study was to assess the status of disability caused by leprosy in the Golestan Province in Iran. Methods: In this retrospective cross-sectional study, patients affected with leprosy whom were referred to Health Ne...
the objective of this research was to study the relationships between edaphic and topographic factors with distribution of plant species. for this purpose, current study was conducted in eshtehard rangelands of tehran province. the sampling method was randomized–systematic and in each sampling unit, three parallel transects with 750 m length containing 45 quadrates (according to vegetation vari...
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