查询词典 problem of random walk

The general-purpose methods for random-vector generation are presented and then followed by a review of existing methods for generating random vectors with known marginals.

接著，讨论与分析各种通用的随机向量产生方法，并针对仅已知边际分布此特殊情况的随机向量产生方法加以探讨。

The correlation coefficient of weak correlated random error is calculated using least squares method, so the random errors ultimately are classified as correlated errors and misrelated errors.

然后进行了目标运动模型假定及命中点和误差的坐标平移，并对未来空域窗体制下的毁伤概率进行了数学分析与数字仿真。

In the present study, the effect of centrifugal force was investigated by three dimensional finite element analyses; the vibration characters of random mistuned blade-disc were also being investigated by probability methods and the Young's modulus of material of all blades are regarded as random parameters.

结果表明，离心力对失调叶片轮盘系统局部化振动有减弱作用；所有叶片弹性模量在5%误差范围的随机失调系统，其固有频率与非失调相差很小，即失调叶片—轮盘系统可以按照循环对称结构进行模态分析。

To sample high speed random signals without drop,a design of O-shaped high speed random signals acquisition card based on the CPLD and its realization are presented.

0引言随着科学技术的发展，人们对随机信号采集的要求越来越高，不仅要求对随机信号不无遗漏的采集，而且要求很高的采集速度，以求获得尽可能多的信号信息。

Abstracts: To sample high speed random signals without drop, a design of O-shaped high speed random signals acquisition card based on the CPLD and its realization are presented. It consists of same three sets of acquisitive circuits, which construct O-shaped structure to sample the signals without drop .And it adopts threshold judging method to determine the valid data in the process of the acquisition, abandons vast of the redundant useless data at the same time, it only sends the useful data to the host computer by the way of DMA, so it is easy to processing the data. The design is concise and reliable. The sketch map of the logic circuit and the explanation of the main parts are presented. This design has been applied in the engineering project of sampling α nuclide.

为了对随机到来的信号进行不丢失的高速采集，提出了一种基于CPLD的随机信号环形高速采集卡的设计与实现；通过采用三套采集电路形成一个环形结构，可以对随机到来的信号进行不遗漏的高速采集，而且在采集过程中利用阈值的方法鉴别出有用信号，并舍弃了大量的冗余无用数据，从而只将有用数据以DMA的方式传于主机，便于进行信号的处理；电路设计简洁可靠，并给出了主要的逻辑电路示意图与主要部件说明；该系统已经应用在采集α核素的工程实践中。

It was demonstrated that the actin could be polymerized into discrete filaments of tree-like branch structure, random coil filaments cluster and long filaments with different diameters in F-buffer besides random aggregates. These polymerized filaments clearly exhibited the structural polymorphism and showed obvious difference from those assembled under the regulation by actin binding proteins or phalloidin.

研究发现，actin在体外通过自装配过程除了形成无序的蛋白堆积物之外，还能够聚合形成复杂的离散结构，包括树状分支的纤维丛、无规卷曲的纤维簇以及具有不同直径的长纤维等；这些大尺度纤维复合物明显不同于在ABPs或过量F-actin稳定剂参与下形成的由单根微丝和微丝束构成的聚合结构。

By the increasingly widespread application of the pseudo-random signal technology in the fields of system testing, environmental simulaton, data transmission, and PCM, it seems extremely necessary to develop the general pseudo random information sourcc.

随着伪随机信号技术在系统测试、环境模拟、数据传输、脉码通信等领域中日益广泛的应用，研制通用伪随机信源显得十分必要。

Vc in the environment, using the midpoint of random generation of random terrain graphics, the line is rectangular basket drawing.

在vc的环境下，用随机中点生成的随机地形图形，采用的是矩形线筐的绘制。

Vc in the environment, using the midpoint of random generation of random terrain graphics, the line is rectangular basket drawing.

详细说明：在vc的环境下，用随机中点生成的随机地形图形，采用的是矩形线筐的绘制。

Optical transfer function, a tool for evaluating dynamic resolution of airborne optoelectronic systems , is proposed in this paper, by which the effect of linear movement and random vibration of a carrier on image shift is analyzed , providing theoretical basis for calculating the tolerable limit of image shift caused both by line movement and random vibration .

本文首先提出采用光学传递函数作为评价机载光电系统的动态分辨率工具，并利用它具体分析载体的线性运动和随机振动对像移的影响，从而为计算线性运动和随机振动产生像移的容限提供理论依据。

World War II: Battle of Saipan - Americans take Saipan.

1944年的今天，美国在塞班战役中拿下塞班岛。

When the scorner, the rejecter of truth, has become presumptuous; when the routine of work in the various money-making lines is carried on without regard to principle; when the student is eagerly seeking knowledge of everything but his Bible, Christ comes as a thief.{DA 635.3

当讥诮和拒绝真理的人，到了任意妄为时，当追求财利者罔顾按道义经营谋利时，当学人正在兢兢业业地研究各种知识，而单把圣经丢在一边时，基督要像贼一样来临。