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How to quantitatively determinate the relation between system behaviors and parameters variations was an important problem of systems biology.In order to study robustness of NF-κB signal transduction networks,the parameters of system model were assigned to subject to stochastic distributions.

然而，包括速率常数和反应物初始浓度在内的许多参数都是通过实验测量或者根据文献推断得到的，即使对于那些完全通过实验来估计参数的模型，也不能确定参数的实际值与对应的生物系统是否完全一致。

In this paper, we present a model selection algorithm for robust bayesian mixture distributions based on deviance information criterion.

提出一种基于偏差信息准则的鲁棒贝叶斯混合分布模型选择算法。

The hidden Markov model based on diagonal covariance matrix Gaussian distributions is at present the most popular and successful model in speech recognition.

状态输出概率密度为对角协方差矩阵高斯分布的隐马尔可夫模型在帧内特征相关建模方面存在缺陷。

With principal component analysis of the specific relationships between small mammal community and habitat structure, dicotyledon biomass and horizonal structure heterogeneity of the vegetations were major factor to influence the distributions and community structures of small mammals.

小哺乳动物群落与栖息地关系的PCA分析表明，植被的双子叶植物生物量和植被水平结构异质性是影响小哺乳动物分布和群落结构的主要因素。

Methods The distribution of fos-like immunoreactive neurons in telencephalon, diencephalon, midbrain and pons were examined in 10 "behavioral despair" rats and 10 "simple forced swimming" rats, and the distributions of FLI neurons of the two groups were compared by fos-Ab immunohistochemistry methods.

采用不同强度强迫游泳应激造成绝望行为模型和单纯强迫游泳模型大鼠（Wistar 系雄性，体重160～180 g）各10只，在其端脑、间脑、中脑和脑桥切片上各做抗fos蛋白免疫组化染色，40倍光镜下观察和计数各部位内fos蛋白免疫阳性神经元及其数目，并进行两组之间的比较。

Illustrative results are presented for the radiation dose and dose profile with activity distributions: uniform, determined by steady-state diffusion into the target volume, or determined by steady-state diffusion with a constant rate of loss of activity from the target.

计算程序用Visual Basic V6.0编写，在微机上运行。为了验证计算结果，将均匀分布条件下的计算结果分别与文献报导的结果比较，发现它们是一致的。

In order to understand the polymer chain conformations above and below the glass transition temperature, dihedral angle distributions of polymer chains at various temperatures are also studied.

为了了解高分子链构象在玻璃化转变温度之上和之下的变化，对高分子链在不同温度下二面角分布也进行了研究

Both theoretical and experimental results show that compaction properties and heating rates do not alter this linear relation, but influence the slope of the linear relation, and therefore it is concluded that large dihedral angle, high green density, narrow particle and pore size distributions are beneficial to the achievement of the grain size-density trajectory with promoted densification and minimized grain growth.

理论分析和实验结果表明，成型体性质不改变这一线性关系，但可以改变直线的斜率，而升温速率对直线斜率的影响不大。较大的二面角、较高的素坯密度、较窄的颗粒和气孔尺寸分布有利于获得较小的晶粒生长和较高的烧结密度。

Using ABEEM σπ, charge distributions of amino-acid dipeptide and nitrenium ions reaction are calculated.

本文应用该模型计算了氨基酸二肽和致癌性胺离子反应过程中的电荷分布，并对结果进行了讨论。

The main objective of this dissertation was to develop methodologies with capability of engineering application for simulating flow in fractured rock using discontinuum models. The study work includes three parts. In the first part, numerical methodology of three-dimensional discrete fracture network model casing on hybrid BEM-channel was presented, and the technique for improve the model's computing efficiency was also studied. Firstly in this part, computer simulation methodology based on the Baechermodel for generating network of discrete fractures was presented, which includes the follow details: probability distributions of fracture density,orientation, trace length, size, and aperture and estimation of their statistical parameters; stochastic models of fracture network; Monte-Carlo's simulation method; numerical simulation procedure and technicality.

给出了离散裂隙网络模型所依据的基本假定；发展了基于Baecher模型的离散裂隙网络计算机随机生成技术：详细地推导了单裂隙渗流和多裂隙相交网络渗流的边界单元法公式，发展了离散裂隙网络中稳态渗流的边界元数值技术，并且讨论了相关的具体数值技术细节，如角点的处理方法，单元的自动剖分等：描述了混合边界元—管流模拟方法及其数值实现；研究了裂隙网络的简化方法，并针对裂隙网络边界元法的特点提出了一种改进的分块三角分解法。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。