查询词典 problem of random walk

This random variable can be derived from a (0,1) uniformly distributed random variable according to a given distribution.

按照给定的分布，这一随机变量能由(0，1)均匀分布的随机变量加以变换得到。

In a probabilistic analysis of unrepairable systems, system behavior is described by reliability and mean time to failure, in which the reliability is defined by the probability of the random event "system is functioning at time t", and MTTF the expected value of random lifetime of system.

衡量不可修系统可靠性的指标主要是系统可靠度和平均寿命。其中系统可靠度定义为不可修系统在t时刻仍正常工作的概率，平均寿命定义为不可修系统寿命的期望值。

Considering the specialty of pseudo-random vector, a partial scan algorithm for BIST, which unifying the structure analysis and testability analysis, is presented in this paper. Then, the fault simulation experiments on ISCAS89 benchmark circuits by this algorithm is made, and the results, which made by the full scan algorithm and the partial scan algorithm only based on the structure analysis, is compared. The conclusion is achieved: for pseudo-random vector, compared with the full scan circuit and the circuit geted by partial scan algorithm only based on the structure analysis, the circuit geted by our partial scan algorithm can greatly reduce the test time with very close or even greater faults coverage and less area than the full scan.

考虑到伪随机测试向量的特殊性，本文借鉴确定性测试向量生成的部分扫描算法，在内建自测试环境中，提出一种综合结构分析和可测性分析的部分扫描算法，PSBAST，并运用此算法对ISCAS89 benchmark电路进行计算，并对经计算后得到的部分扫描电路进行故障模拟，最后将模拟结果与全扫描电路和一种仅考虑结构因素的部分扫描算法得到的结果进行详细分析和比较，结果表明：对于伪随机测试向量，相对于全扫描电路和由仅考虑结构因素的部分扫描算法得到的电路，本文提出的部分扫描算法得到的电路，能够在不低于全扫描结构故障覆盖率前提下，大幅度减少测试时间，并能降低测试面积开销。

In order to clearly recognize the geophysical response of carbonate reservoir,based on preliminary recognition of Ordovician carbonate reservoir under the basal surface in Tahe oilfield,some regular vug models and random arranged vug models were designed and built. The variable-grid finite difference method was used to simulate the seismic wave propagation in these models. Then,the seismic records of the models were analyzed and the effect to seismic reflections caused by vug is studied. The impact rule of regular vug scale and random arranged vug density on seismic attributes was obtained.

为了研究碳酸盐岩储层的地球物理响应特征，在对塔河油田奥陶系风化面下碳酸盐岩储层初步认识的基础上，利用随机介质建模技术，设计并建立了一系列碳酸盐岩储层规则孔洞和随机孔洞模型，并应用变网格有限差分法对地震波在孔洞模型中的传播进行了正演计算，对模拟得到的地震属性进行了分析，研究了孔洞对地震反射特征的影响，获得了规则孔洞尺度以及随机排列孔洞密度对地震属性的影响规律。

For single vug,when the lateral scale of vug is smaller than Fresnel radius,and the vertical scale is smaller than tuning thickness,the reflection amplitude of vug is proportional to its scale. For carbonate reservoir with random arranged vug,seismic wave amplitude is proportional to vug density.Key words random medium;forward modeling;carbonate;vug

对于单个的溶洞而言，当溶洞横向尺度小于菲涅尔带半径，纵向尺度小于调谐厚度时，溶洞反射振幅与溶洞尺度成正比例关系；对于随机分布孔洞的碳酸盐岩储层而言，地震波能量与孔洞密度成正比例关系。

Major topics covered are: basic concepts of probability, sample space and events, axioms of probability, random variables, discrete and continuous distributions, joint and marginal distributions, numerical characteristic for random variables, the weak law of large numbers, central limit theorem, basic concepts of statistics, parameter estimate, hypothesis testing and regression analysis.

本课程的基本内容有：随机事件及其概率、随机变量及其分布、多维随机变量及其分布、随机变量的数字特征、大数定律与极限定理、数理统计的基础知识、参数估计、假设检验、回归分析。

Focuses on the characteristic of YASS' random embedding, this pap er studies the locaton of embedding blocks using the characteristic of YASS' random embedding, and finds out that the YASS' embedding processing will have an impact on JPEG images' statistical property.

本文针对YASS隐密术随机嵌入的特点，研究了YASS嵌入数据的位置分布。同时，分析了信息嵌入过程对JPEG图像数据统计特性的影响，提取了多个有效的特征，结合秘密数据的分布概率，设计出一种有效的专用型隐密分析算法。

This paper first Studies the relation between coefficients and the growth of Dirichlit se-ries of zero order in the whole plane,and further proves that the growth of random entire functions defined by random Dirichlet series of zero order in every horizotal straight lines is almost surely equal tothe growth of entire functions defined by its corresponding Dirichlet series.

首先研究了全平面上零级狄里克莱级数的系数和增长性之间的关系，然后证明了对于本级随机狄里克莱级数所确定的随机整函数，在每条水平直线上的增长性几乎必然

Lead lanthanum zirconate titanate exhibits many desirable optical and electrical properties such as ferroelectricity.dielectrics and holds great promise for wide applications in ferroelectric random access memory and dynamic random access memory.

锆钛酸铅镧具有良好的铁电介电和光学性能，在铁电存储器、动态随机存储器等方面应用前景广阔。

In this paper, by Zorn lemma and cone theory, the existence of the random fixed points for discontinuous increasing operators was discussed and the existence theorems of random fixed point were obtained.

本文利用Zorn引理和锥理论，研究了不连续随机算子的随机不动点的存在性问题，得到了几个有关不连续随机增算子的随机不动点定理。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。