monte carlo simulation of rapidarc radiotherapy delivery

Ngày tải lên: 10/09/2015, 15:49

... accurate knowledge of dose distribution Unfortunately, commissioning a Monte Carlo based radiotherapy tool for dosimetric calculation typically requires either direct simulation of the medical linear ... [2-4]) A new, proprietary Monte Carlo based system, NXEGS, provides an automated alternative to traditional commissioning NXEGS is a suite of Monte Carlo applications for radiotherapy, which are ... spectral characteristics Methods We have commissioned NXEGS 1.0.10.0 software for Monte Carlo simulation of the electron beams of a Varian Clinac 2100C medical accelerator with nominal energies...

Ngày tải lên: 03/11/2012, 10:05

... evaluation of the kinetic parameters in the presence of stearate Evaluation of kinetic parameters Fig Comparison of three models for the catalytic action of plasmin in the presence of stearate ... Light attenuation of oleic acid micelles in the presence of synthetic plasmin substrate (A) Twenty microlitres of mM Spectrozyme-PL was added to 180 lL of various concentrations of oleic acid (the ... Kinetic parameters of plasmin in the presence of fatty acids The values of kp and Km were determined from the amidolytic assay of plasmin activity, according to Model I, in the presence of oleate (OA)...

Ngày tải lên: 18/02/2014, 17:20

... activity of 370 MBq (10 mCi) in a disk shape (having overall diameter of mm, overall thickness of mm, active diameter of 4.2 mm, beryllium window with thickness of mm) is placed in well of the ... of Science, Mathematics - Physics 26 (2010) 43-49 47 Proccessing of the measured results and drawing of graphs are done by software of Origin The fitted equations and saturation thicknesses of ... / VNU Journal of Science, Mathematics - Physics 26 (2010) 43-49 includes two parts: i) the theoretical simulation of measuring intensity for thickness of materials by the system of MYO-101 with...

Ngày tải lên: 22/03/2014, 11:20

Ngày tải lên: 21/07/2014, 16:21

Ngày tải lên: 09/09/2015, 10:16

... Journal of Science, Mathematics - Physics 23 (2007) 9-14 101 Fig.1 The confguration of the HP Ge (GMX) detector Relating to the physical dimensions of the above detector the thickness of the dead ... difference Conclusion The problem of photon self-absorption in gamma spectrometry of environmental samples has no simple solution because of the attenuation of photons depending on many various ... detector’s active part Monte- Carlo modeling allows to take into consideration all these corrections during computation In this paper, the modeling calculation of peak efficiencies of the hyperpure...

Ngày tải lên: 13/02/2014, 04:20

... take advantage of this simple and useful tool in managing project risks and uncertainties O verview of Monte Carlo simulation Brief history of Monte Carlo simulation The Monte Carlo simulation encompasses ... use of Monte Carlo simulations of molecular systems belonging to complex energetic landscapes, and offered a new approach to improve the convergence of these simulations Other areas of Monte Carlo ... retirement has begun Application of Monte Carlo simulation in project management Review of Monte Carlo simulation applications in project management Monte Carlo simulation, while not yet widely...

Ngày tải lên: 23/03/2014, 04:21

... available simulation add-in for Excel is Crystal Ball 2000, which will be used in this example How did Monte Carlo simulation get its name? Monte Carlo simulation was named for Monte Carlo, Monaco, ... that you can analyze This is where Monte Carlo simulation comes in handy WHAT IS MONTE CARLO SIMULATION? What we mean by "simulation? " When we use the word simulation, we refer to any analytical ... difficult to reproduce Monte Carlo simulation is a form of simulation that randomly generates values for uncertain variables over and over to simulate a model Without the aid of simulation, a spreadsheet...

Ngày tải lên: 08/04/2014, 12:08

Ngày tải lên: 14/11/2014, 08:17

Ngày tải lên: 09/09/2015, 10:13

Ngày tải lên: 14/09/2015, 14:06

Ngày tải lên: 16/10/2015, 15:35

... Simulation and Monte Carlo Simulation and Monte Carlo With applications in finance and MCMC J S Dagpunar School of Mathematics University of Edinburgh, UK Copyright ... ([profit]), TITLE (‘‘Plot of Average profit per day against number of skips’’), AXESLABELS (‘‘skips’’, ‘‘profit per day’’), AXESSTYLE(BOX)); Plot of Average profit per day against number of skips ... ‘becomes equal to’ The value of the expression to the right of = is assigned to the variable or parameter to the left of = 1 Introduction to simulation and Monte Carlo A simulation is an experiment,...

Ngày tải lên: 07/03/2014, 15:20

... number of Monte Carlo trials should be select‐ ed – step (d) Generally, the greater the number of simulation trials, the greater the conver‐ 33 34 Theory and Applications of Monte Carlo Simulations ... 10 Kinetic Monte Carlo Simulation in Biophysics and Systems Biology 227 Subhadip Raychaudhuri Chapter 11 Detection of Breast Cancer Lumps Using Scattered X-Ray Profiles: A Monte Carlo Simulation ... measurement" – Propagation of distribu‐ tions using a Monte Carlo method) is responsible to give practical guidance on the applica‐ tion of Monte Carlo simulations to the estimation of uncertainty [4]...

Ngày tải lên: 16/03/2014, 12:20

... propose a variation of the UCT algorithm for paraphrase generation named MCPG for MonteCarlo based Paraphrase Generation The main part of the algorithm is the sampling step An episode of this step is ... an efficient generation algorithm Monte- Carlo based Paraphrase Generation UCT (Kocsis and Szepesvári, 2006) (Upper Confidence bound applied to Tree) is a Monte- Carlo planning algorithm that have ... sampling regularly after a fixed amount η of episodes Our main adaptation of the original algorithm is in the (state, action) value updating procedure Since the goal of the algorithm is to maximise a...

Ngày tải lên: 17/03/2014, 02:20

... example, a Monte Carlo calculation of the seating patterns of the members of an audience in an auditorium may This presupposes that all uses of the Monte Carlo are for the purposes of understanding ... uit i on an intuition MONTE CARLO THEORY verification Practical results Figure 1.6: The role of Monte Carlo methods in applied science 1.1 Why is Monte Carlo? If Monte Carlo did not exist there ... MONTE CARLO Basic understanding Figure 1.2: The role of Monte Carlo methods in basic science possible, as in the example of Figure 1.1 where two people can not occupy the same seat, a Monte Carlo...

Ngày tải lên: 09/04/2014, 16:23

... in out of the 100 Monte Carlo trials, whereas the RS tracker diverged in out of 100 runs When we increased the PTCR to 8.1 dB, the divergence rates fell to out of 100 for the APF, and out of 100 ... then the Monte Carlo estimate, Pr({zn = 0} | y1:n ), of the posterior probability of target absence by dividing the number of particles for which ( j) zn = by the total number of particles N ... estimation errors recorded in each of the 100 Monte Carlo trials, excluding the divergent realizations Our simulation results suggest that, despite the reduction in the number of particles from 8000 to...

Ngày tải lên: 22/06/2014, 19:20

... ξξ T σk , with (14) Sequential Monte Carlo (SMC) is a family of methodologies that use Monte Carlo simulations to efficiently estimate the a posteriori distributions of the unknown states in a dynamic ... the derivation of a blind detector based on a Bayesian formulation and sequential Monte Carlo (SMC) techniques for the differentially encoded OFDM system Being soft-input and soft-output in nature, ... (e) WER of information bits probabilities, is developed using sequential Monte Carlo (SMC) techniques Being soft-input and soft-output in nature, the proposed SMC detector is capable of exchanging...

Ngày tải lên: 23/06/2014, 00:20