نتایج جستجو برای: spatial

تعداد نتایج: 362278  

صیاد, احسان, غلامی, شایسته,

In Zagros forest ecosystem, spatial variability of soil and vegetation properties are controlled by series of physical and biological parameters including topographical and anthropogenic factors. Distribution patterns of these properties are greatly variable. In the current study, geostatistics and fractal theory were used to assess the spatial variability of tree canopy and soil bulk density i...

Spatial Zoning and Analysis of Urban Poverty via Spatial Analysis (Case Study: Mashhad City)   Abstract Examining the degree of poverty in every community is the first step taken towards planning for fighting against poverty and deprivation. With understanding the poverty change process over time, planners can make the necessary decisions. The present study aims to investigate the spatial z...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1387

چکیده ندارد.

ژورنال: اندیشه آماری 2021

In conventional methods for spatial survival data modeling, it is often assumed that the coefficients of explanatory variables in different regions have a constant effect on survival time. Usually, the spatial correlation of data through a random effect is also included in the model. But in many practical issues, the factors affecting survival time do not have the same effects in different regi...

Firooz Sadighi Nassim Golaghaei

Several studies of L2 learners’ interlanguage have addressed the complexity of the English adpositional system due to several reasons like L1 transfer, lack of knowledge in L2 and the strong collocational relations of prepositions with other elements of the English language. The major purpose of the present study is to evaluate the performance of Iranian students in dealing with three broad cat...

Spatial distributions of rural settlements in Iran represent an imbalanced nature. The major objective of this study is to investigate the spatial patterns of Iranian rural settlements using certain indicators and indices .It further tries to propose a model regarding the analysis of spatial imbalances. This study further supported by application of modifiable areal unit problem(MAUP) suitable ...

Journal: Iranian Economic Review 2017

T he main objective of this study is to estimate the spatial spillover effects of the economic growth among the selected countries of MENA region. For this purpose, the Spatial Durbin Model in the framework of spatial dynamic panel data was estimated during the period of 1970-2010. The spatial Diagnostic tests affirmed the occurrence of spatial positive autocorrelation phenomenon for...

Alireza Kamali Asl, Hossein Arabi Seyed Mahmood Reza Aghamiri

Introduction: Variable resolution x-ray (VRX) CT is a new type of CT that can image objects at various spatial resolutions. In a VRX CT scanner, the spatial resolution increases at the cost of reduction in the field of view (FOV). An important factor that limits the spatial resolution of the VRX CT is the effect of focal spot size. Also, the optimum magnification is different at each incident a...

Journal: :iranian biomedical journal 0
ناصر نقدی nasser naghdi ناهید مجلسی nahid majlessi

data on the effects of serotonin reuptake inhibitors on learning and memory processes are not consistent. in the present study, the effects of citalopram, a very potent and completely selective inhibitor of the serotonin reuptake on spatial discrimination in the t-maze and morris water maze, were assessed in mice and/or rats. animals received different doses of citalopram (1, 2, 4, 8 or 16 mg/k...

Journal: :iranian journal of radiation research 0
h. arabi radiation medicine department, shahid beheshti university, tehran, iran a.r. kamali asl radiation medicine department, shahid beheshti university, tehran, iran s.m. aghamiri radiation medicine department, shahid beheshti university, tehran, iran

background: a variable resolution x-ray (vrx) ct scanner provides a great increase in the spatial resolution. in vrx ct scanners, the spatial resolution of the system and its field of view (fov) can be changed according to the object size. one of the main factors that limit the spatial resolution of vrx ct scanner is the effect of the x-ray focal spot. materials and methods: a theoretical study...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید