نتایج جستجو برای: monte carlo method radiotherapy
تعداد نتایج: 1722494 فیلتر نتایج به سال:
یکی از مهم ترین عوامل خرابی سدها، پدیده روگذری می باشد که خود ناشی از علل متعددی است. از جمله اثر گذارترین عوامل بر پدیده روگذری، سیلاب و خیزاب ناشی از وزش باد می باشد که در این پروژه اثر این دو عامل مورد بحث و بررسی قرار گفته است. در مطالعه انجام شده، احتمال وقوع روگذری ناشی از باد و سیلاب در دریاچه سد خاکی دوراهان در استان چهار محال و بختیاری بررسی شده و در نهایت احتمال وقوع این پدیده به روش...
Introduction: Radiation therapy using electron beams is a promising method due to its physical dose distribution. Monte Carlo (MC) code is the best and most accurate technique for forespeaking the distribution of dose in radiation treatment of patients.Materials and Methods: We report an MC simulation of a linac head and depth dose on central axis, along with profile calculations. The purpose o...
The accuracy of Monte Carlo and quasi-Monte Carlo methods decreases in problems of high dimensions. Therefore, the objective of this study was to present an optimum method to increase the accuracy of the answer. As the problem gets larger, the resulting accuracy will be higher. In this respect, this study combined the two previous methods, QMC and MC, and presented a hybrid method with efficien...
We use the variance minimization method to determine accurate wave functions for first-row homonuclear diatomic molecules. The form of the wave function is a product of a sum of determinants and a generalized Jastrow factor. One of the important features of the calculation is that we are including low-lying determinants corresponding to single and double excitations from the Hartree–Fock config...
In this paper we present a natural and comprehensive generalisation of the standard factorial moments (F q) analysis of a multiplicity distribution. The Generalised Factorial Moments are defined for all q in the complex plane and, as far as the negative part of its spectrum is concerned, could be useful for the study of infrared structure of the Strong Interactions Theory of high energy interac...
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