نتایج جستجو برای: new geometrical model

تعداد نتایج: 3654054  

Introduction Patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. In this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4D) XCAT anthropomorphic phantom. Materials and Methods To access 4D modeling of motion...

Journal: :iranian journal of radiology 0
ali akbar khadem jaam e jam medical center, tehran, iran; jaam e jam medical center, tehran, iran jalal jalal shokouhi jaam e jam medical center, tehran, iran alireza darvish jaam e jam medical center, tehran, iran

today radiology and imaging are the only and main method to generate geometrical data from body. 3d model of the body will give us the best and reliable information for better understanding and diagnostic. on the other hand with development of cad/cam and rapid prototyping, the 3d printers were born to build 3d models without considering the geometry. today the 3d printers are able to makes a 3...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

abstract: in the paper of black and scholes (1973) a closed form solution for the price of a european option is derived . as extension to the black and scholes model with constant volatility, option pricing model with time varying volatility have been suggested within the frame work of generalized autoregressive conditional heteroskedasticity (garch) . these processes can explain a number of em...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
s. mohammadiun s.a.a. salehi neyshabouri gh. naser h. parhizkar h. vahabi

open-channel junctions have a broad application in civil and environmental engineering. formation of a low-pressure zone with recirculating flow (high sedimentation) accompanied by a high-velocity zone (high erosion) is the most characteristic feature of flow in junctions. a large number of researches have been performed to study the complexity of the flow in junctions in open-channel flows. in...

Ahmed Seif Goudarz M. Rouzbehani Temer S. Ahmadi

Geometrical structure, nuclear magnetic resonance (N1,1It) chemical shielding tensors, and chemical shiftsof silicon and carbon nucler are investigated for twn infinite size zigzag and armchair single-walled siliconcarbide nanotabes (SiCNTs). Geometrical structures of SieNTs, Sit bonds and bond angles of St and Cvertices in both zigzag and armchair nanotubes, Indicate that bond lengths are appr...

 One of the new area of research emerging in the field of statistics is the shape analysis. Shape is defined as all the geometrical information of an object whose location, scale and orientation is not of interest. Diffusion in shape analysis can be studied via either perturbation of the key coordinates identifying the initial object or random evolution of the shape itself. Reviewing the f...

Journal: :iranian journal of medical physics 0
payam samadi miandoab department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. ahmad esmaili torshabi department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. saber nankali department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. mohammad reza rezaie department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran.

introduction patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. in this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4d) xcat anthropomorphic phantom. materials and methods to access 4d modeling of motion...

2013
Hamidreza Sadeghifar Majid Bahrami Ned Djilali

< A statistical model is developed for estimating GDL thermal conductivity. < The model considers the statistical distribution of GDL geometrical parameters. < Angle and aspect ratio distributions are measured for some GDLs. < The dependency of thermal conductivity on geometrical parameters is considered. < New techniques are introduced for GDL geometrical property measurements. a r t i c l e i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده ادبیات و علوم انسانی 1389

abstract compound is a word-formation process that are made two free morpheme (independent) and forms a new word with a new meaning that consists of meaning of both two component of compound. avestan language is one of the ancient iranian languages that is one of the indo-iranian languages. indo-iranian languages is one branch of indo-european languages. structure of compound noun and adjectiv...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید