نتایج جستجو برای: gis fuzzy
تعداد نتایج: 123479 فیلتر نتایج به سال:
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یکی از مشکلات اساسی اراضی مرتعی این است که از مراتع بر اساس پتانسیل و شایستگی آنها استفاده نمی شود و این استفاده نادرست منجر به تخریب بیش از حد مراتع شده است. شایستگی مرتع عبارتست از حالتی که بتوان از مرتع به عنوان چرای دام در طی سالیان دراز استفاده کرد بدون اینکه به منابع پوشش گیاهی و خاک آن صدمه ای وارد شود. تعیین شایستگی مرتع یکی از مهمترین عوامل مدیریت اراضی مرتعی به شمار می رود. در این تحق...
Automated extraction of man-made objects such as buildings and roads using image analysis techniques for urban mapping and updating geographic information systems (GIS) databases has been an active research topic in photogrammetry and remote sensing community. Segmentation plays an important role in the process of digital image processing towards automatic extraction of GIS objects from aerial ...
Telegeomonitoring system development combines two heterogeneous technologies: the geographical information systems technology (GIS) and telecommunications technology. In this paper, we give the system components for telegeomonitoring transportation of hazardous materials. The telegeomonitoring system uses GIS to capture civil infrastructure (urban network, land use, industries, etc.) and decisi...
The paper presents a mathematical framework for approximate geometric reasoning with extended objects in the context of Geography, in which all entities and their relationships are described by human language. These entities could be labelled by commonly used names of landmarks, water areas, and so forth. Unlike single points that are given in Cartesian coordinates, these geographic entities ar...
The management of uncertainty in databases is necessary for real world applications, especially for systems involving spatial data such as geographic information systems. Rough and fuzzy sets are important techniques that can be used in various ways for modeling uncertainty in data and in spatial relationships between data entities. This chapter discusses various approaches involving rough and ...
The article deals with imprecise geographical entities modelled according to the fuzzy set theory for both spatial and quantitative information. It presents the issues of fusion of fuzzy geographical objects according to its storing modes (raster, vector) in a mutualised geographical information system (GIS). We study the aggregation of imprecise spatial entities and its impact in the imprecise...
land suitability analysis, commonly known as land evaluation, is considered an interface between land resourcesurvey and land use planning and management. land evaluation be carried out to estimate the suitability of land fora specific use such as arable farming or irrigated agriculture. there are several established techniques for generatingland suitability evaluation. this research was carrie...
the county of khorram-abad enjoys a high potential for ecotourism because of its mountains, forests, natural mineral springs, natural waterfalls and diversity in folks and cultures. but, un-planned and uncontrolled ecotourism can have negative effects on environment, economy, culture and even the security of eco-tourists. the main purpose of this study is to present a fuzzy multi-criteria decis...
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