نتایج جستجو برای: beamnrc simulation

تعداد نتایج: 559052  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1379

در این تحقیق روشی برای ارزیابی عملکرد هیدرولیکی شبکه های آبرسانی از نقطه نظر پارامترهای فشار و تغییرات فشار در گره ها و سرعت در لوله ها ارائه شده است. چارچوب روش پیشنهادی از دو مرحله تشکیل شده است که مرحله اول به شبیه سازی و تحلیل هیدرولیکی شبکه های اختصاص دارد. در این مرحله از روش تحلیل مبتنی بر فشار که در ادبیات فنی به ‏‎(head driven simulation method) hdsm‎‏ مشهور است، استفاده شده است. در رو...

Journal: :journal of artificial intelligence in electrical engineering 2012
m asghari m. a badamchizadeh m. e akbari

with increasing use of robots instead of human in industrial, medicine and military applications etc.the importance of research on designing and building of robots is increasing. in this paper variousmethods of the human hand motion simulation has been investigated and we used one of most commonmethod named data-gloves which extract data from hand and then we simulated hand motion duringseveral...

Journal: :international journal of advanced design and manufacturing technology 0
davoud naderi soheil ganjefar mohamad mosadeghzad

in this research optimal reconfiguration strategy of the improved srr reconfigurable mobile robot based on force-angle stability measure has been designed using genetic algorithm. path tracking nonlinear controller which keeps robot’s maximum stability has been designed and simulated in matlab. motion equations of the robot have been derived in parametric form by means of newton- euler, lagrang...

Journal: :iranian journal of radiation research 0
k.n. esnaashari department of medical physics tehran university of medical sciences, tehran, iran m. allahverdi department of medical physics tehran university of medical sciences, tehran, iran h. gharaati department of medical physics tehran university of medical sciences, tehran, iran m. shahriari department of medical radiation, shahid beheshti university, tehran, iran

background: stereotactic radiosurgery is an important clinical tool for the treatment of small lesions in the brain, including benign conditions, malignant and localized metastatic tumors. a dosimetry study was performed for elekta ‘synergy s ’ as a dedicated stereotactic radiosurgery unit, capable of generating circular radiation fields with diameters of 1-5 cm at isocentre using the beam/egs4...

Journal: :iranian journal of radiation research 0
h.r. khosravi department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran s. sarkar department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran a. takavar department of medical physics, faculty of medicine, tehran university of medical sciences, tehran, iran m. saghari department of nuclear medicine, shariati hospital, tehran university of medical sciences, tehran, iran m. shahriari department of medical radiation, shahid beheshti university, tehran, iran

background: various variance reduction techniques such as forced detection (fd) have been implemented in monte carlo (mc) simulation of nuclear medicine in an effort to decrease the simulation time while keeping accuracy. however most of these techniques still result in very long mc simulation times for being implemented into routine use. materials and methods: convolution-based forced detectio...

Journal: :Journal of Computing and Information Technology 2001

Journal: :Publications of the Astronomical Society of Australia 2021

Abstract We produce the first low to mid-frequency radio simulation that incorporates both traditional extragalactic sources as well synchrotron cosmic web emission. The FIlaments & GAlactic RadiO (FIGARO) includes 10 unique 4° × fields, incorporating active galactic nucleii (AGNs), star-forming galaxies (SFGs), and emission out a redshift of z = 0.8 over frequency range 100–1 400 MHz. To d...

Journal: :REVIEW OF TRANSPORT ECONOMICS AND MANAGEMENT 2019

Journal: :Journal of Energy, Mechanical, Material and Manufacturing Engineering 2017

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