严平稳与宽平稳过程的关系

系统研究严平稳与宽平稳的相互关系,并采用一些构造性的例子加以论证,得到许多有价值的结果．     

多指标随机过程弱对称0—1律

本文证明了多指标平稳随机过程的弱对称０－１律，推广了朱成熹在单指标情形下的有关结果。     

联合平稳随机过程导数的联合平稳性

目的 为了讨论联合平稳随机过程{X(t),t∈T}和{Y(t),t∈T}的导数{X(k)(t),t∈T}与{Y (1),t∈T}(0≤k,l≤n)的联合平稳性.方法 利用了平稳随机过程和联合平稳性的定义及数学归纳法.结果 分别证明了{X(t),t∈T})和{Y'(t),t∈T}、{X'(t),t∈T}和{Y(t),t∈T}的联合平稳性,在此基础上给出了它们的两个推论.结论 证明了随机过程与{X(k)(t)±Y(l)(t),t∈T,0≤k,l≤n)}的联合平稳性,得到了三个重要结论,为讨论联合平稳随机过程导数的其它相关性质提供了方便.     

基于量子随机行走的两光子Bell态测量

量子纠缠态是量子信息和量子通讯领域中的核心资源,实现量子纠缠态中的完全Bell态测量,将对量子信息学的发展有重要的意义.本文,我们基于量子随机行走提出了一种实现双光子Bell态测量的物理方案.基于该方案的操作过程有明显的简化,本方案在实验上具有一定的可行性和指导意义.     

基于工作过程导向的“ASP.NET程序设计”串讲课程开发与研究

文章探讨了基于工作过程导向的"ASP.NET"串讲课程的设计思想、设计理念和设计目标,并以《网上书店》为例子,给出了具体的子项目分解和实施考核过程。     

"应用随机过程"教学方法的探讨

随机过程理论在各个领域尤其是经济问题中的广泛应用,使得"应用随机过程"成为我国当今高等教育体系中一门重要的专业基础课程.本文着重以巴班斯基的优化教学准则为出发点,结合实际教学经验及对教改纲要部分内容的解读,强调课程教学方法的选择必须切实考虑教学目的和原则、教学内容特征、师生自身可能性等多方因素,并针对非理工科经济类专业学生,从上述层面探讨了"应用随机过程"教学方法的优化选择.     

一阶随机系数模型一阶平稳的条件

本文给出了时序模型:X_1=ε_1+((?)+η)X_(1-1)一阶平稳的条件,并提出了随机格林函数的概念.     

高校"宽进宽出"的危害及对策分析

高校扩招是我国高等教育普及化的必然,但它带来了"宽进宽出"的问题,而宽进宽出危害极大,导致办学质量难保、学风受到毒害、师生关系紧张、社会风气败坏、教育资源浪费等.为此.必须严把高校的"入口关"和"出口关",采取多方措施以确保高校培养人才的能力,并加强高校毕业生质量监控.同时,社会用人观念和机制也需相应改变.以便为高校教育质量的提升营造-个良好的外部环境.     

多指标随机过程弱对称0－1律

本文证明了多指标平稳随机过程的弱对称０－１律，推广了朱成熹在单指标情形下的有关结果     

用于通信信号非线性时域滤波的量子随机滤波器

针对通信信号的非线性时域滤波问题,研究了量子随机滤波器的原理和性能.将神经网络与非线性Schroedinger方程相结合,把方程的解作为信号时变的概率密度函数,进而实现滤波功能.研究发现,通过调整势场权系数的取值,可使滤波器具有明显不同的性能.根据此性质,构造了一种新的滤波算法,该算法可使滤波器在信号波形估计的非线性失真程度与它的抗噪能力之间进行折衷,这将大大推广量子随机滤波器的应用,例如,用于通信信号处理.仿真结果表明了量子随机滤波器的优越性能.     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

团图为数的图中的闭团贯数

Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Social and Cultural Influence on Word Meaning

Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language.     

汉字倒说

汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.