نتایج جستجو برای: monte carlo modelling

تعداد نتایج: 232329  

Journal: :journal of physical & theoretical chemistry 2013
s. shojaee m. monajjemi

aquaporins are integral membrane proteins from a larger family of major intrinsic proteins that formpores in the membrane of biological cells. aquaporins form tetramers in the cell membrane with eachmonomer acting as a water channel.in this research, the aqp4 tetramer was modeled from its pdbstructure file, then, we have performed the intraction of aquaporin4 in different temperatures (298k,300...

Journal: :international journal of communications and information technology 2011
m. soroosh m. a. mansouri-birjandi

in this paper, we calculate electron and hole impactionization coefficients in in0.52al0.48as using a monte carlo modelwhich has two valleys and two bands for electrons and holesrespectively. also, we calculate multiplication factor for electronand hole initiated multiplication regimes and breakdown voltagein in0.52al0.48as pin avalanche photodiodes. to validate themodel, we compare our simulat...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
pejman ganjeh-anzabi vahid hadadi-asl mehd salami-kaljahi hossein roghani-mamaqani

in this work, based on experimental observations and exact theoretical predictions, the kinetic scheme of raft polymerization is extended to a wider range of reactions such as irreversible intermediate radical terminations and reversible transfer reactions. the reactions which have been labeled as kinetic scheme are the more probable existing reactions as the theoretical point of view. the deta...

Journal: :iranian journal of radiation research 0
gh. geraily department of medical physics, tehran university of medical science, tehran, iran m. mirzapour department of electronic, east tehran branch, islamic azad university, tehran, iran s.r. mahdavi department of medical physics, tehran university of medical science, tehran, iran m. allahverdi department of medical physics, tehran university of medical science, tehran, iran a. mostaar department of biomedical engineering and medical physics, shahid beheshti university of medical science, tehran, iran m. masoudifar department of radiation oncology, mahak hospital, tehran, iran

background: physical wedges are still widely used as beam modifiers in external beam radiotherapy. however the presence of them in the beam trace may cause beam hardening which may not be considered in many treatment planning systems. the aim of this study is to investigate the beam hardening effect generated by physical wedges via different beam quality indexes as photon spectrum, half value l...

Journal: :Philosophical Transactions of the Royal Society B: Biological Sciences 2008

2008
John Hunt Bernardo Dantas Adelaide Azeredo Salvador Allende

The Monte Carlo program Visual Monte Carlo in vivo (VMC in-vivo) was developed and tested over thirteen years at the Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, Brazil. VMC in-vivo has been extensively validated through international intercomparisons and is available for free download. The program simulates the geometry of Whole Body Counter (WBC) and Gamma-Camera Counting sy...

2000
Ray Gallagher Behrouz Fathi Vajargah

This paper presents a Bayesian approach, using parallel Monte Carlo modelling algorithms for combining expert judgements when there is inherent variability amongst these judgements. The proposed model accounts for the situation when the derivative method for finding the maximum likelihood breaks down.

Journal: :Computational Statistics & Data Analysis 2005
Gianluca Cubadda Pieter Omtzigt

This paper proposes new iterative reduced-rank regression procedures for seasonal cointegration analysis. The suggested methods are motivated by the idea that modelling jointly the cointegration restrictions at the different frequencies may induce some efficiency gain in finite samples. Monte Carlo simulations indicate that the new tests and estimators perform well with respect to already exist...

2011
Adriana Bungau Robert Cywinski Roger Barlow Cristian Bungau Philip King James Lord

The energy deposition on the ISIS muon target and the temperature profiles are analysed in this paper. The thermal modelling is performed using the GEANT4 Monte Carlo code. Heat deposition patterns are also simulated for alternative target geometries. Energy deposition in the collimators is also discussed.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید