查询词典 random access

Events,Operation and Relation of Sets, Classical Probability, Geometrical Probability , Statistical Stability of a Frequency, Axioms of Probability, Conditional Probability, Total Probability Theorem, Bayes' Rule,Independent Events,Independent Repeated Trials, One Dimensional Random Variables, Discrete Random Variables, Distribution Function of a Random Variables , Continuous Random Variables, Normal Distribution, Distribution of a Function of a Random Variable, Multidimensional Random Variables, Joint Distribution Function, Marginal Distribution Function,Discrete Two—Dimensional Random Variables,Continuous Two—Dimensional Random Variables, Independent Random Variables, Distribution of Functions of Random Variables,Expectation,Variance, Covariance, Coefficient of Correlation, Bivariate Normal Distribution, Law of Large Numbers, The Central Limit Theorems, Sample and Population ,Chi—Squared, T and F Distributions , Sampling Distributions , Point Estimation , Interval Estimation , Testing Hypotheses , A Test of Significance for Parameters in a Single Sample From a Normally Distributed Population , A Test of Significance for Parameters in Two Sample From Normally Distributed Populations .

本课程的主要内容：概率的概念与运算、随机变量及其分布、随机变量的数字特征与极限定理、数理统计的基本概念、估计和检验的基本方法，随机事件与概率随机事件、事件的关系与运算、几何概率、统计概率等，条件概率、全概率公式、贝叶斯公式、事件的独立性、二项概率公式，随机变量的概念、离散型随机变量、随机变量的分布函数、连续型随机变量、随机变量函数的分布，多维随机变量及其分布函数、边缘分布函数、随机变量的独立性、二维随机变量函数的分布，数学期望、方差、协方差和相关系数、大数定律、中心极限定理，总体与样本， X 2-分布、 t-分布和 F-分布，统计量及抽样分布，假设检验的基本概念、单个正态总体参数的显著性检验、两个正态总体参数的显著性检验。

The access service units to immediately clean up all the access to mobile Web site, verification of web service content; no access to unfiled website; all access site must be entered into for information security management agreements; access service units to the offending Web site promptly cut off access; access to service units should periodically check the access to web content and found that illegal Web site must consciously stop access to, http://blog.sina.com.cn/bjqyjz and timely reporting of relevant competent departments.

各接入服务单位要立即清理所有接入的手机网站，核查网站服务内容；不得接入未备案网站；所有接入网站必须签订信息安全管理协议；接入服务单位要对违规网站及时切断接入；接入服务单位要定期检查接入网站内容，发现违法违规网站必须自觉停止接入， http：//blog.sina.com.cn/bjqyjz 并及时报告有关主管部门。

The access service units to immediately clean up all the access to mobile Web site, verification of web service content; no access to unfiled website; all access site must be entered into for information security management agreements; access service units to the offending Web sitepromptly cut off access; access to service units should periodically check the access to web content and found that illegal Web site must consciously stop access to, http://blog.sina.com.cn/bjqyjz and timely reporting of relevant competent departments.

各接入服务单位要立即清理所有接入的手机网站，核查网站服务内容；不得接入未备案网站；所有接入网站必须签订信息安全管理协议；接入服务单位要对违规网站及时切断接入；接入服务单位要定期检查接入网站内容，发现违法违规网站必须自觉停止接入，http：//blog.sina.com.cn/bjqyjz并及时报告有关主管部门。

Based on the fundamental principles of the improved method mentioned above, multi-functional computation software package, which can be used to analyze effectively the interference effects of random flaws in plane problem, boundary problem and space problem, is compiled and a number of problems involved in the interference effects of different kinds of flaws such as random equal length through-cracks, random branched throughcracks, random unequal length through-cracks, random holes to through-cracks, unequal length edge cracks, equal length and distance multiple edge cracks, random notches with different aspect ratio, random notch to edge crack, non-coplanar surface cracks with different aspect ratio, staggered surface cracks, surface crack to embedded crack and embedded cracks near free boundary are analyzed and computed by the package.

依据上述改进法的基本原理，本文编制了能有效地分析平面问题，边界问题及空间问题的任意缺陷群相互干涉效应的多功能计算软件包。据此，本文分析计算了各类缺陷群。诸如，任意等长裂纹群。任意折裂纹群；任意不等长裂纹群，任意孔与裂纹群，不等长边裂纹群。等长等间距多裂纹群，任意形状比缺口群，任意缺口与边裂纹，非共面不同形状比表面裂纹群，交错型表面裂纹群，表面裂纹与埋藏裂纹群及自由边界附近埋藏裂纹群等的相互干涉效应问题。

An equal cross-section blade was investigated and a finite element model was built parametrically. Geometrical parameters (such as length, width and thickness), material parameters (such as young's modulus and density) and speed of blade were considered as input random variables while the static frequencies and dynamic frequencies were output random variables. Combining the finite element method, response surface method and Monte Carlo method, the statistical properties and cumulative distribution functions of static frequencies and dynamic frequencies were obtained. Probability sensitivities analysis, which combined the slope of the gradient and the width of the scatter range of the random input variables, was applied to quantitatively evaluate the sensitivities of static frequencies and dynamic frequencies with respect to the random variables. The Scatter plots of structural responses with respect to the random input variables were illustrated how to adjust the values of the static frequencies and dynamic frequencies by changing input random variables.

文中以某试验台用汽轮机等直叶片为研究对象，考虑几何参数、材料参数和转速的随机性，通过有限元参数化建模，将确定性有限元方法、响应面方法和Monte-Carlo模拟法相结合，从而获得了叶片静频、动频的统计特性和累积分布函数；同时考虑随机变量的梯度和离散范围对静、动频的影响，通过概率敏感性分析，定量地判断出叶片静、动频对随机输入变量的敏感性；通过绘制叶片静、动频与输入变量的散点图，定量地分析了如何改变随机变量以调整静、动频率的方法。

Professional Main Products are:(1) all kinds of electric locks Product Series: electromagnetic lock series, electric plug lock series, electric locking series lock series, hotel lock series, all kinds of special-shaped electric lock series;(2) sizes Intelligent Access Management Series: Single door machine, access control attendance machine, fingerprint access control machine, single-door two-way controller, two two-way controller, four one-way controller (communication mode may choose 485 or TCP / IP);(3) access control electric locks surrounding attachment Series: electric plug lock folder dedicated Frameless door, magnetic lock dedicated stent, the models go out button, a dedicated lock access control power supply, various types of access control card , EMID reader / issuer, and intercom access control system, a dedicated power lock delay.

专业主营产品有：（1）各式电锁产品系列：电磁锁系列、电插锁系列、电锁口系列、指纹锁系列、酒店锁系列、各式异形电锁系列；（2）大中小型智能门禁管理系列：单门一体机、门禁考勤机、指纹门禁一体机、单门双向控制器、两门双向控制器、四门单向控制器、（通讯模式均可选择485或TCP/IP）；（3）门禁电锁周边附件系列：电插锁专用无框门夹、磁力锁专用支架、各款式出门按钮、门禁专用锁电源、各类型的门禁感应卡、EMID读卡器/发卡器、对讲门禁系统锁延时专用电源。

An improved shceme for the old double-way authentication access control scheme based on Harns digital signature is proposed. The new double-way authentication protocol of the improved access control scheme can prevent man-in-the-middle attack and replay attack. After strict formal analysis with BAN logic, the result have proved that the authentication protocol is secure. The improved access control scheme is realized by the mode of single-key-lock-pair. Under new access control scheme, user can own several kinds of access right upon one file under the new scheme without the supposition that the access rights is increase by degrees, and the possibility of overflow problem is significantly reduced by our new method

作为对原双向认证访问控制方案的改进，改进后的双向身份认证协议可以很好的抵抗中间人攻击和重放攻击，经过严密的BAN逻辑形式分析和论证，结果表明该协议是安全的；改进后的访问控制方案用单钥-锁对方案实现，除保持了一般单钥-锁对方案的良好动态特性外，在不需要访问权限递增假设下，实现了用户对文件的多种访问控制权限，并大大减小了溢出问题的发生可能

The method includes the following steps: step A, the terminal accesses, registers and loges on to IM core net through at least two different wireless IP access networks; step B, in the process for carrying a VoIP communication through at least one of two IP access networks, if the terminal meets the pre-set switching condition between the IP access network, a switching request in the IMS domain is initiated; step C, the speech calling continues application server receives the switching request, and switches the signaling between the terminal and the VCC application server to the other IP access network except the IP access network loading the VoIP communication at present in at least two IP access networks.

本发明提供一种IMS域内VoIP的切换方法、IMS系统、终端及VCC应用服务器，该方法包括：步骤A，终端通过至少两个不同的无线IP接入网接入并注册登录到IMS核心网；步骤B，在终端通过至少两个IP接入网中的一个进行VoIP通话的过程中，如果终端满足预设的IP接入网之间切换条件，则发起IMS域内的切换请求；步骤C，语音呼叫连续应用服务器接收切换请求，并将终端与VCC应用服务器之间的信令切换到至少两个IP接入网中、除当前承载VoIP通话的IP接入网之外的其中一个IP接入网上。

In the second aspect, a systematic study is made on random ambiguous point、random asymptotic ambiguous point、random intrinsic value and random intrinsic element of random operator.

在随机非线性算子与随机算子方程方面，深入研究了随机不动点的存在性与随机算子方程的随机解。

Introduce the concept of random regular function and random potential function at first, a necessary and sufficient condition of random potential function for denumerable Markov chain in random environment is provided, and the unique decomposition property of nonnegative random super-regular function is discussed.

首先引入随机位势函数的概念，给出随机位势函数的一个首要条件，进而讨论非负随机上调和函数的唯一分解性。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。