نتایج جستجو برای: satellite images and autocad map

تعداد نتایج: 16884669  

ژورنال: مرتع 2022

Background and objectives: Vegetation is one of the most important elements of an ecosystem, which is directly related to the moisture conditions of the land. Estimation of plant drought indices such as VCI, TCI, VHI is an effective tool to assess the effects of drought by calculating NDVI. In this regard, several studies have been conducted that explain how to calculate and use these indicator...

بشری, حسین , جعفری, رضا, رمضانی, نفیسه , هادیان, فاطمه,

This study aimed to evaluate the effects of Hana’s dam (constructed in 1996) on land use and cover changes using Landsat satellite images. Three images over 35 years (taken in 1976, 1998, and 2011) were obtained and geometric, atmospheric and topographic corrections were applied. The dam’s affected area was selected based on the interpretation of satellite imagery and local expert knowledge. Ma...

2012

Utilities are challenged to improve efficiency and operations as they update their aging network assets and implement more complex smart grids. An integrated design and asset management workflow can help utilities improve efficiency, enhance asset selection and accounting, and improve data quality as a foundation for better safety, reliability, and compliance. This paper explores one approach t...

2015
Suining Ding

Although there are plenty of AutoCAD books available for architects, interior designers, and engineers, it has been difficult for the author to find an appropriate textbook for students who major in interior design while teaching AutoCAD, especially 3-D AutoCAD at the sophomore level. Most existing 3-D AutoCAD textbooks are more engineering oriented. Industrial machine components such as bolts ...

Journal: :international journal of advanced biological and biomedical research 2014
mostafa moradi dashtpagerdi payman rezaee ali rostamnejad diba ghonchepour

the coastal region of chabahar gulf with 1113.7km2 area has been located in the southeast of iran. in this research, satellite images of etm+ (2004) were used in order to zoning of sedimentary environments in this gulf. methodology of this research was baesd on synthesis of supervised and unsupervised classifications in gis and envi softwares. based on studies and calculation of oif index, the ...

Journal: :journal of tethys 0

geological studies are basic formof operations for the exploration and development of oil and gas fields.preparation of topographical and geological maps and drawingcross section from thesemaps formspart of these operations. existing lineaments in the study area are important, and should be considered in drawing the geological sections. the evaluation of wells stability is one of the important ...

ژورنال: علوم آب و خاک 2009

Monitoring Land Use and Land Cover Changes have a significant role in environmental programming and management. Satellite data is an essential tool for detecting and analyzing environmental changes. Many change detection techniques have been developed which have advantages or disadvantages. Change Vector Analysis (CVA) technique is one such a method. This method is based on radiometric changes ...

Journal: Desert 2012
Gh.R. Zehtabian H.R. Matinfar M. Shirazi S.K. Alavipanah

Soil Salinity has been a large problem in arid and semi arid regions. Preparation of such maps is useful for Natural resource managers. Old methods of preparing such maps require a lot of time and cost. Multi-spectral remotely sensed dates due to the broad vision and repeating of these imageries is suitable for provide saline soil maps. This investigation is conducted to provide saline soil map...

حجتی, سید محمد, میرزایی زاده, وحید, نیک نژاد, مریم,

In order to map the forest canopy density Bivareh Ilam Landsat 8 satellite data of 22 July 2014 and FCD model was used. The FCD of four indicators of vegetation, soil, shade and the heat index by applying a suitable threshold was and the density of vegetation and forest canopy density map based on FCD in percent respectively. Forest density map obtained, according to the classes provided by the...

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