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In this study, for the complicated distribution of dose rate in time and space, considering the repair of the sub-death cells, the radionuclide decay law and exponential proliferation of clonogenic cells, the dose-response relationship is built based on the known linear-quadratic model, and the concept of tumor control probability is introduced into the therapy method. Furthermore, the concepts about "curable stage" and "critical time point" and the methods calculating the amount of radionuclide injected into tumor in clinical are proposed.

本课题针对这一方法中靶区复杂的剂量率时-空分布特点,以公认的"线性-二次模型"理论为基础,同时考虑亚致死性细胞修复、核素衰变规律和克隆原性细胞指数增殖,建立了适合这一治疗方法的具有时-空分布特点的剂量效应关系,并进一步将肿瘤控制概率的概念引入这一方法中,提出了"治愈期"及"临界时间点"的概念以及由此指导临床确定药物注射剂量的方法。

According with Schema Theory, the deceptiveness of GA in solving optimization problems was probed in detail.

分析了基于模式理论的单调函数采用标准GA求解的强概率收敛性。

The fault tree of atmospheric-vacuum distillation unit is established with deductive method on the theory of fault tree analysis.

根据故障树分析理论,用演绎法建立了常减压装置的失效故障树,通过定性分析找到影响稠油加工常减压装置安全性的主要因素,通过定量分析计算出引起失效的各事件的概率和重要度。

A probability density function of the strain applied is derived from random vibration theory.

根据随机振动试验的有关理论确定产品局部应变载荷的概率密度函数。

To accelerate the widespread of Synchronous Chip Seal and improve the operation quality of Synchronous Chipsealer, key techniques which influence the operation quality is studied detailedly, including the control of distributing quality, the dynamics characteristics of hydraulic system and the spray characteristics of asphalt nozzle of Synchronous Chipsealer.1 The factors which influence Synchronous Chip Seal quality are studied. Fiducial probability of simultaneous distribution density is advised to be used in evaluating the distribution bias and standard deviation of asphalt and aggregates simultaneously, which is more advanced than the single index evaluation method used before.2 The volume efficiency formula of asphalt pump is revised after analyzing the data of volume efficiency with mathematical statistics, which is helpful to match the asphalt spray system and control the flow out of asphalt pump accurately. With equation deduction and experiment, dynamic of hydraulic system used in Synchronous Chipsealer is studied, which lay the theory foundation on improving the stability and efficiency from design and controlling.4 Simulation on hydraulic system used in Synchronous Chipsealer is done with AMESim; the results indicate that multi-circle parallel connected hydraulic system with constant pressure power is better than that with load-sensing pressure power at present, because the latter will oscillate when the multi circles work at the same time. This conclusion has been proved during the debug of Synchronous Chipsealer.5 Asphalt nozzle characteristics, such as flat jet shape, flow distribution, are studied with experiment, the results indicate that cross quality of asphalt distributing is not increased linearly follow the increase of fan overlap level, the best point usually exists between two whole overlap level, asphalt distributing quality is better than±4% at the 2.5 overlap level, meets the superior specified in standard; The distribution quality of Synchronous Chipsealer can be increased by spray asphalt of different flow rang with nozzle of different diameter

为了加快同步碎石封层技术的推广,提高同步碎石封层设备的作业质量,本文对同步碎石封层设备作业质量的影响因素与控制方法、液压系统的动力学特性和沥青喷嘴的喷洒特性等关键技术进行了深入细致的研究:1研究了影响同步碎石封层作业质量的因素,提出了采用联合密度分布置信概率对同步碎石封层中沥青洒布量和碎石撒布量的系统偏差和标准差指标进行综合评价的方法,克服了传统评价方法只能对单一指标进行评价的缺陷;2采用数理统计的方法,研究了沥青泵的容积效率特性,修正了沥青泵容积效率公式,为沥青喷洒系统的匹配和沥青泵出口流量的精确控制提供了依据;采用数理方程推导与试验相结合的方法,研究了同步碎石封层设备液压系统的动力学特性,为从设计和控制的角度提高同步碎石封层设备液压系统的稳定性和效率奠定了理论基础;3运用AMESim软件对采用负载敏感控制和恒压控制的两种同步碎石封层设备液压系统进行仿真,结果表明:负载敏感控制的并联液压系统在多回路同时工作时,由于液压泵排量控制参考压力不稳定,容易引发液压系统振荡,恒压控制的并联液压系统是目前技术条件下比较理想的同步碎石封层设备工作装置驱动方案;该结论亦通过同步碎石封层设备装机试验得到了验证。4采用试验的方法对沥青喷嘴的喷洒特性进行了研究,结果表明:沥青洒布的横向精度并不是随着喷洒扇面重叠度的增加线性增加,其最高点通常出现在二个重叠度之间的"半重叠位置","2.5重叠"洒布时,沥青的横向洒布精度≤±4%,可以达到国家相关标准中的优级标准;同步碎石封层设备还可以根据不同洒布量情况下的流量需求,采用不同通径的喷嘴进行喷洒,提高沥青洒布精度。

It is very important to study the algorithm for the entanglement transformation between the quantum states determinately or probability.

量子纠缠是一些量子信息处理过程中必不可少的资源,研究量子态之间确定的或概率的纠缠转化的算法是量子信息理论里一项重要的任务。

Therefore, based on probability theory and its links with the Dirichlet problem, we propose a new numerical method for the Dirichlet problem to remove the above weaknesses.

为此,本文以概率理论及其与Dirichlet问题之间的联系为基础,提出了一种Dirichlet问题的数值方法,以解决上述存在的种种问题。

Based on the theoretical analysis of the disturbance effect during vertical drain construction, in this paper, probability analysis is adopted, and the impact of variability of parameters with larger uncertainty or discreteness on consolidation reliablity is analyzed, which is very useful in the design and construction of soft clay ground treatment.

本文在理论分析竖井施工扰动效应的基础上,采用概率分析的手段,对由扰动效应引起的不确定性或离散性较大的参数,分析其变异性对固结可靠性的影响,对于饱和软黏土地基处理的设计和施工具有一定的指导意义。

Correlation analysis of the two lists of the probe signals are done by using the statistic method. Void wave instantaneous velocity probability distribution graphs and the graphs of a relation between void wave average velocities and fluxes are obtained. The comparison between the fitting lines and the theoretical formulation of void wave velocity is drap.

通过统计的方法对两列探针获得的局部瞬时空隙率信号进行相关性处理,得到不同流量和不同外加扰动下空隙率波瞬时波速概率分布图及空隙率波平均波速和流体流速关系图,并对空隙率波平均波速拟合直线和空隙率波波速理论公式进行比较。

Stochastic theory and other correlative theories are used to analyze IGA, and the immune extend population sequence formed by IGA is proved to be an aperiodic irreducible ergodic Markov chain.

同时在纯数学意义上拓展讨论,就IGA的一般收敛理论进行分析,证明了概率弱收敛、几乎处处弱收敛、渐进收敛等性质。

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推荐网络例句

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石!

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。

When you click Save, you save the file to the host′s hard disk or server, not to your own machine.

单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。