نتایج جستجو برای: mc model
تعداد نتایج: 2117455 فیلتر نتایج به سال:
The purpose of this study was to present a Monte Carlo (MC) simulation method based on a virtual source, jaw, and MLC model to calculate dose in patient for helical tomotherapy without the need of calculating phase-space files (PSFs). Current studies on the tomotherapy MC simulation adopt a full MC model, which includes extensive modeling of radiation source, primary and secondary jaws, and mul...
The intent of this study was to discover the nature of (partial) knowledge as estimated by the multiple-choice (MC) test method. An MC test of vocabulary, including 20 items, was given to 10 participants. Each examinee was required to think aloud while focusing on each item before and while making a response. After each test taker was done with each item, s/he was ...
The new fib Model Code 2010 (MC 10) has introduced new and improved formulations to define the model for the long-term behaviour of concrete. In this way some inconsistencies present in the older CEB/FIP Model Code 1990 (MC 90) have been removed. In the new formulation the total creep deformation of concrete has been introduced as sum of two contributions: basic and drying creep, for each of wh...
In this contribution, we consider the effect of carrier phase jitter on the performance of uplink OFDMA, uplink multicarrier CDMA (MC-CDMA) and uplink multicarrier direct sequence CDMA (MC-DS-CDMA) systems, assuming orthogonal spreading sequences. For this aim, it is proposed, first to consider a small random jitter, then, to model phase jitter by Gaussian and Rayleigh laws. Theoretical express...
در سال های اخیر، با بهره گیری از ویژگی های قابل توجه سیستم های دسترسی چندگانه با استفاده از تقسیم کد و امکان استفاده ی همزمان چند کاربر با نرخ انتقال داده ی بالا از یک کانال توسط مدولاسیون چند حامله، روش های متعددی تحت نام کلی mc-cdma پیشنهاد و مورد بررسی قرار گرفته است. در این پایان نامه یکی از این تکنیک ها به نامfh-th-mc-wcdma ، که از پرش فرکانسی وزمانی بهره می برد را مورد مطالعه قرار می دهیم...
BACKGROUND The purpose of the present study is to compare finite size pencil beam (fsPB) and Monte Carlo (MC) based optimization of lung intensity-modulated stereotactic radiotherapy (lung IMSRT). MATERIALS AND METHODS A fsPB and a MC algorithm as implemented in a biological IMRT planning system were validated by film measurements in a static lung phantom. Then, they were applied for static l...
Multicarrier code division multiple access (MC-CDMA) is a very promising candidate for the multiple access scheme in fourth generation wireless communication systems. During asynchronous transmission, multiple access interference (MAI) is a major challenge for MC-CDMA systems and significantly affects their performance. The main objectives of this thesis are to analyze the MAI in asynchronous M...
This paper presents a modeling framework for schedulability analysis of distributed integrated modular avionics (DIMA) systems that consist of spatially distributed ARINC-653 modules connected by a unified AFDX network. We model a DIMA system as a set of stopwatch automata (SWA) in UPPAAL to analyze its schedulability by classical model checking (MC) and statistical model checking (SMC). The fr...
Mass Customization (MC) is a management concept which aims at the combination of mass production and customer related individualization. Product configuration is mentioned as one of the critical factors in realizing MC projects but it is a summarizing term with different requirements and functions depending on the particular MC scenario. In this paper, an approach is presented integrating the t...
Although mast cells (MC) play an important role in allergic reactions, their physiologic role remains unknown. In mice, several models of MC-deficiency have been developed. However, no comparable human model is available. We examined the in vitro- and in vivo effects of the KIT-targeting drug imatinib on growth and development of human MC. Imatinib was found to inhibit stem cell factor (SCF)-in...
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