查询词典 Monte Carlo

The Monte Carlo method is combined with the Mie scattering theory to analyze the volumetric absorption characteristics of a semitransparent medium layer with absorbing and scattering particles.

将Mie散射理论与蒙特卡罗法相结合分析了含吸收散射粒子半透明介质层的容积吸收特性。

Research on the influence of refractive index on diffuse reflectance and absorptance in tissue by Monte Carlo method. Chin. J.

用蒙特卡罗法研究折射率对光在组织中的漫反射率和吸收比的影响。

The influence of radiation on flow was controlled by temperature and absorption coefficient.

结合流动计算的MacCormack格式和辐射传输计算的Monte Carlo法，研究了跨声速喷管内流动与辐射的耦合现象，考察了不同温度和吸收系数情况下流动与辐射的相互影响。

Neumann series expansion in Monte-Carlo finite element is used to find the stress of fiber winded composite structures with stochastic factor; Structure reliability formula are then given by Monte-Carlo comparison method and Tsai-Hill failure criteria.

将纽曼级数展开的蒙特卡罗随机有限元应用于具有随机因素的纤维缠绕结构的应力求解；然后利用蒙特卡罗直接比较法和蔡希尔失效判据给出该结构的可靠性算式。

The nonlinearity and discrete gradient inherited in CAViaR model is a conundrum for parameter estimation. We take the asymmetric Laplace distribution with scale parameter as the error process; indicate the variance has a minimum positive value when the scale parameter is a constant, conflicting with the distribution of real financial data. Further we estimate the parameters of indirect TARCH-CAViaR model base on Bayesian framework and Markov chain Monte Carlo method. The optimal scale parameter can also be obtained by Markov chain Monte Carlo method.

CAViaR一般模型中递归分位回归方程的非线性和非连续可微性是参数估计的一个难题，基于含有尺度参数的不对称拉普拉斯分布作为误差过程，指出将尺度参数固定为常数会导致不对称拉普拉斯分布随机变量的方差存在最小正值的限制，与实际金融数据分布不符；进而提出采用贝叶斯分析和马尔科夫链蒙特卡罗模拟方法，估计间接TARCH-CAViaR模型的参数，并可获得尺度参数的合理估计。

In risk analysis at the Monte Carlo simulation model,this paper built a Monte Carlo risk analysis subsystems.

在风险分析的蒙特卡罗模拟模型中，本文构建了蒙特卡罗风险分析子系统。

Monte Carlo simulation is one of effective ways to get this kind of dosimetric parameters. In this paper, the absorbed doses at the central axis in different phantoms with inhomogeneity media and finite sizes for small field size beams were simulated with Monte Carlo code system EGSnrc, respectively.

本文利用蒙特卡罗方法模拟计算了临床上常用的点源光子束在有限宽非均匀模体中的沉积能量，研究了不同射野条件下中心轴上的剂量分布，并用剂量扰动因子定量分析了剂量增强或减弱效应的强度。

There were no significant differences for the firing rates in the site of contralateral TNC neurons among during pre-CSD,CSD,and post-CSD (P＞0.05).For flunarizine group,the firing rates in the site of ipsilateral TNC neurons during pre-CSD were higher as compared with during CSD(P＜0.05).2.1 There were statistical differences on palasma levels of CGRP and SP among the three groups(P＜0.05).The levels of CGRP and SP in CSD group were higher than control group(P＜0.05).No significant differences on the levels of CGRP and SP in ipsilateral trigeminal ganglia were found among the three groups(P＞0.05).2 The number of neurons with positive CGRP and SP immunoreactivity was statistically different in right-sided trigeminal ganglia among the three groups (P＜0.05).The number in fight-sided trigeminal ganglia in CSD group was higher as compared with control group(P＜0.05).The number in right-sided trigeminal ganglia was statistically higher than that in left-sided trigeminal ganglion in CSD group(P＜0.05).3.1 Altered ReHo in ipsilateral pons and other brain regions response to pain such as basal nuclei,thalamus,cingulated gyms and prefrontal cortex was detected during the acute spontaneous attack as compared with during headache remission(P＜0.05,corrected by Monte Carlo simulation). 2 Positive functional connectivity was detected between ipsilateral pons and other brain regions related to pain within pain state and within non-pain state (P＜0.05,corrected by false discovery rate,FDR).Increased functional correlation between ipsilateral pons and other pain-related brain regions such as ipsilateral prefrontal cortex and contralateral subcallosal gyrus was detected during the acute spontaneous attack as compared with during headache remission(P＜0.05,corrected by Monte Carlo simulation).

结果1。对照组未发现CSD；同侧TNC放电频率，CSD中＞CSD后＞CSD前P＜0.05对侧TNC放电频率，CSD前、中、后无统计学差异(P＞0.05氟桂利嗪组同侧TNC放电频率，CSD前＞CSD中(P＜0.05)，CSD前与CSD后及CSD中与CSD后之间无统计学差异(P＞0.05)。2.1关于放免测定，各组血浆CGRP、SP水平有统计学差异(P＜0.05)，CSD组高于对照组(P＜0.05)，CSD组与氟桂利嗪组、对照组与氟桂利嗪组之间均无统计学差异P＞0.05各组之间同侧三叉神经节中CGRP、SP水平未见变化(P＞0.05.2关于免疫组化研究，右侧三叉神经节CGRP、SP免疫阳性细胞数三组之间有统计学差异(P＜0.05)，多重两两比较结果CSD组大于对照组(P＜0.05)，CSD组与氟桂利嗪组之间、对照组与氟桂利嗪组之间无统计学差异P＞0.05左侧三叉神经节CGRP、SP免疫阳性细胞数三组之间无统计学差异(P＞0.05CSD组中右侧三叉神经节CGRP、SP免疫反应阳性细胞数大于左侧(P＜0.05)。3.1局部一致性分析发现两组患者头痛疼痛状态较非疼痛状态脑活动发生变化的脑区有同侧脑桥以及其他疼痛相关脑区如基底节区、丘脑、扣带回、前额叶皮层等(P＜0.05，蒙特卡罗模拟校正)。2功能连接分析发现疼痛状态与非疼痛状态下主要疼痛相关脑区均与同侧脑桥有功能联系P＜0.05，false discovery rate，FDR校正疼痛状态与非疼痛状态比较，同侧前额叶皮层、对侧胼胝下回等疼痛相关脑区与同侧脑桥之间功能联系增强(P＜0.05，蒙特卡罗模拟校正。

Employing a general Monte Carlo code MCNP, the following Monte Carlo calculations which are important in the design of PAN shufflers were done:(1) optimization of moderators;(2) detection efficiency variation with the position of a neutron source;(3) multiplication effects and self-shielding effects;(4) isotopic effects;(5) shielding properties of the storage chamber and the assay chamber;(6) the relation between 〓Cf source strength and background neutron count rates.

文章详细讨论了无源方式下中子总计数分析和符合计数分析以及有源方式下缓发中子分析的基本原理，在此基础上，运用通用蒙特卡罗程序MCNP计算了桶装废物分类装置研制过程中所关心的一系列问题：慢化体的优化设计、探测效率随中子源位置的变化情况、增殖和自屏蔽效应、同位素效应、贮存室和测量室对〓Cf源的屏蔽能力、〓Cf源强度与本底计数率的关系，等。

After an unimpressive performance in the summer friendlies, Carlo Ancelotti's men have found back their class especially thanks to Sheva's superb play: not only the Ukrainian star scored the winner for Milan in the UEFA Super Cup final against Porto, but was also man of the match, as voted by the press at the Stade Louis II in Monte Carlo.

在一系列表现不佳的的夏季友谊赛之后，安切洛蒂的手下们找回了他们的水准，这还多亏了舍娃的出色表现：这位乌克兰球星不仅在欧洲超级杯对阵波尔图的比赛中为米兰攻进制胜一球，并且被新闻媒体评选为那晚蒙特卡洛圣路易斯球场的最佳球员。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了