نتایج جستجو برای: spatial and temporal changes

تعداد نتایج: 16975576  

2016
Zhiguo Long Steven Schockaert Sanjiang Li

Most approaches in the field of qualitative spatial reasoning (QSR) use constraint networks to encode spatial scenarios. The size of these networks is quadratic in the number of variables, which has severely limited the real-world application of QSR. In this paper, we propose another representation of spatial scenarios, in which each variable is associated with one or more rectangles. Instead o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1388

this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...

Evaluating potential evapotranspiration plays an important role in planning, designing, and managing water resources, especially in arid and semi arid zones. The aim of the present research is considering spatio-temporal changes of different potential evapotranspiration methods such as Thornthwaite, Hargreaves, and Blaney-Criddle in the Maharlou Watershed, Fars province. So, yearly statistics o...

The smallest change in energy exchange of Earth System Shifts the balance of life. In order to be aware of the solar radiation Balance, Recognition of the measure of Balance level of the input and output components of radiation of input Short wavelength to the surface of the earth and Long Output Wavelength, it is necessary from the earth. To study the energy balance of input and output in Iran...

Argani, M, Ezimand, K, Javanbakht, M, Saghafipour, A,

  Background and Objectives: Environmental conditions in different geographical areas provide a basis for the spread of some diseases. Cutaneous leishmaniasis is a serious threat to public health and is one of the arthropod-borne diseases. The prevalence and distribution of this disease is affected by environmental and climatic factors. The aim of this study was to model the Spatio-temporal va...

رورده, همت اله , لرستانی, قاسم , چراغی, معصومه ,

Rivers are highly sensitive to environmental changes. Detection of river changes can lead to recognition and optimal management of the river channel side and riverbeds. This study aimed investigating the river changes and identifying the factors affecting the level of channel side of Babolrood in Babol City. The data of this study were collected from river discharge and sediment, land structure...

Journal: :معماری و شهرسازی آرمان شهر 0
musa pazhuhan ph.d candidate in geography and urban planning, faculty of geography, tehran university, tehran, iran. ahmad pourahmad professor of geography, faculty of geography, tehran university, tehran, iran. ahmad saeednia retired professor of geography, faculty of geography, tehran university, tehran, iran. karamatoola ziari professor of geography, faculty of geography, tehran university, tehran, iran. mehdi gharakhlou retired professor of geography, faculty of geography, tehran university, tehran, iran.

metropolitan regions as a result of the steady stream of urbanization in industrial period which have occurred during 20th century, become the engine of countries growth and development. in the process of formation and development in these areas, spatial structuring that define through two elements of population and activity with the communication structure interacting between them, has been ef...

Journal: :حفاظت گیاهان 0
فرشته صفری محمد بنایان اول محمد حسن راشد محصل

understanding the spatial distribution of weeds would provide good results for the commercial applications of future research programs, development forecast desirable of yield loss and understanding the processes that cause changes in spatial and temporal distribution weeds. in this order an experiment was conducted in 1388 to find the effects of biological interactions, climate and agricultura...

C. Jiang J. Cheng Q. Yu, X.Q. Rao Z.F. Wu,

Great changes in land use/land cover from rapid urbanization have occurred in the PearlRiver Delta, China. As the primary cause of land development in the urbanization process,urban expansion has mostly occurred on land with higher NPP, significantly impacting theregional ecosystems. The primary purpose of this study was to reveal the impacts of urbanexpansion on the regional NPP. The land cove...

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