和协

Stationary and nonstationary processes, including ARIMA processes. Estimation of process mean and autocovariance function. Fitting ARIMA models to data. Statistical tests for white noise. Forecasting. State space models and the Kalman filter. Robust time series analysis. Regression analysis with correlated errors. Statistical properties of long memory processes.

静态和非静态过程(包括 ARIMA 过程)，均值和时间序列分析：自协方差估计，用 ARIMA 模型拟和数据，白噪声序列的统计检验，预报，状态空间模型和 Kalman 过滤，时间序列分析的稳健性，残差具有相关性的回归分析。

In this paper, the concept of network security and security structures of OSI and Internet is introduced, and various threats confronting the computer network are also discussed. Several kinds of network information security technologies, including firewall technology, virtual private network, intrusion detection system, data encryption technology, identity authentication and security protocol etc. are also examined. The security of internal network is the biggest problem in the construction of each network. The solution to this problem lies in setting up a firewall. The theory of a firewall and the approach to its actualization is studied. Intrusion detection system, an important part of the computer network security system, has gained extensive attention. IDS monitors the computer and network traffic for intrusion and suspicious activities. It not only detects the intrusion from the extranet hacker, but also the intranet users. The emergence of virtual private network paves the way for realizing secure connection of LAN quickly and at a relatively low cost. The concept, function, key techniques, including the tunnel technology, and the ways to realize VPN are expounded in this paper. Also introduced is the data encrypt network technology, which is called the soul of computer network security, such as digital digest, digital signature, digital certificate, digital encrypt arithmetic and so on. At the same time, the principle and the process of implementing network security by digital certificate and digital signature, the basic principle and characters of security protocols, and finally, three of the security protocols, concerning the security problems in network, IPsec, SLL and SET are analyzed in detail Computer network system should be a system of dynamic defence, both dynamic and static, passive as well as active, and even offensive, combined with management and technology.

本文系统地介绍了网络安全的概念、OSI及Internet的安全体系结构，并讨论了计算机网络面临的各种安全威胁；内部网络的安全问题是每个建网单位面临的最大问题，可以认为防火墙技术是解决网络安全的一个主要手段，本文研究了防火墙的原理及其实现手段；作为一种主动的防御措施，入侵检测系统作为网络系统安全的重要组成部分，得到了广泛的重视，TDS对计算机和网络资源上的恶意使用行为进行识别和响应，不仅检测来自外部的入侵行为，也监督内部用户的未授权活动；虚拟专用网技术的出现，为实现网络间的连接提供了快速安全但又相对便宜的手段，本文较深入的探讨了实现VPN的隧道技术，并对VPN的概念、功能、实现途径、基本构成、关键技术及发展前景等问题进行了全面论述；数据加密技术是网络安全核心技术之一，本文从数据加密算法、数字摘要、数字签名及数字证书等几方面简要介绍了数据加密技术，并分析用数字证书和数字签名实现网络安全的原理和过程；对安全协议的基本原理、主要特点进行了较为深入的研究，并就网络的安全性问题剖析了三种安全协议：IPsec协议、SLL协议和SET协议。

This thesis firstly elaborates on researches at home and abroad on factors affecting the development of the construction industry, defines the contents of the construction industry, introduces its function and expounds the impact mechanism of various factors affecting the construction industry. Secondly, this thesis carries on a brief analysis on the current situation of development in Anhui construction industry to reflect its achievements and shortage since the beginning of reform and opening up, and makes a comparative analysis and comprehensive evaluation on the regional development level of Anhui construction industry through the method of Factor Analysis. Thirdly, this thesis tries to calculate the contribution rate of technical progress, labor and capital in economic growth of Anhui construction industry with the method of linear regression, empirically analyze the external factors affecting the development of Anhui construction industry by means of co-integration and granger causality test, and predict the development of Anhui construction industry by using the method of principal components regression.

本文首先对国内外有关建筑业发展影响因素的研究现状进行详细论述，界定建筑业的内涵和介绍建筑业的作用，研究各因素对建筑业发展的影响机理；其次，对安徽建筑业发展现状作了概括性的分析，以反映改革开放以来安徽建筑业取得的成绩和存在的不足，并运用因子分析法对安徽建筑业区域发展水平作了比较分析和综合评价；再次，运用线性回归法测算出安徽建筑业经济增长中的技术进步贡献率、劳动贡献率和资本贡献率，然后运用协整和Granger因果检验方法实证分析安徽建筑业发展的外部影响因素，运用主成分回归方法对安徽建筑业发展作了精度较高的预测。

So far, more than 400 people to the United States, Canada, New Zealand, Saudi Arabia, working in 13 countries, nearly 1,800 people to Beijing, Shenzhen, Tianjin, Shanghai and other mainland city of employment, the employment rate reached 100 percent, and the quality of employment and stability of the good; Since 2003, the schools are with the United States, Canada, Australia, New Zealand and four countries, five institutions have established stable cooperative relationship, the external output channels, step by step flow; Ministry of Education, Ministry of Health and Hebei Province, Chengde City, as well as foreign institutions in the schools to set up various training bases 5; the past five years, the school sponsoring scale nearly one-fold, the campus covers an area of increased 113%, construction area increased by 1.5 million square meters, laboratory instruments and audio-visual equipment , books and other school conditions have been substantially improved; the establishment of teaching practice base 95, including major hospitals outside the province such as the Beijing Union Medical College Hospital, PLA General Hospital, the Third Affiliated Hospital of Peking University Department of Medicine, Shenzhen Second People's Hospital, Shanghai Punan A total of 44 hospitals, etc.; the overall quality of teaching staff has been significantly improved, train 21 graduate students, teachers, served as the textbook editor of the National Commission 8, deputy editor of 3; In recent years, the school received more than 20 each year and several other universities abroad, missions or study visits of experts and scholars, the social impact of growing; school sponsoring the good results achieved by the media attention, the China Education reported that vocational and technical education in China magazine, China's economic construction magazine, Hebei Daily News and a number of media school characteristics school carried out varying degrees of coverage, such as the China Education Daily,"features professional make angels in white taken the door," the Chinese Journal of Vocational and Technical Education "angel from here into the world," and so on.

截至目前，已有400多人到美国、加拿大、新西兰、沙特阿拉伯等13个国家工作，有近1800人到北京、深圳、天津、上海等国内大城市就业，就业率达到了百分之百，而且就业质量和稳定性良好；2003年以来，学校分别与美国、加拿大、澳大利亚、新西兰等4个国家的5个机构建立了比较稳定的合作关系，对外输出渠道逐步畅通；教育部、卫生部和河北省、承德市以及国外机构在学校建立各类培训基地5个；近5年来，学校办学规模扩大了近1倍，校园占地增加了113％，建筑面积增加了1.5万平方米，实验仪器和电教设备、图书等办学条件得到了实质性的改善；建立教学实习基地95个，其中省外大医院如北京协和医院、解放军总医院、北京大学医学部第三附属医院、深圳第二人民医院、上海浦南医院等共44所；师资队伍综合素质得到显著提高，培养研究生21名，教师担任全国统编教材主编8部，副主编3部；近年来，学校每年接待20余所兄弟院校和数个国外访问团或专家学者的考察访问，社会影响不断扩大；学校办学取得的良好成绩受到了媒体的关注，中国教育报、中国职业技术教育杂志、中国经济建设杂志、河北日报等多家媒体对学校特色办学情况进行了不同程度的报道，如中国教育报的《特色专业让白衣天使跨出国门》、中国职业技术教育杂志的《天使从这里走向世界》，等等。

A lot of doubt that generates from this, phonic collect assist symphonious assist card pulls staff member of center of OK copyright operation to also say at was being responded to recently, the cent recipe case that copyright expends still needs to talk things over at present.

由此产生的诸多质疑，音集协和音著协的卡拉OK版权运营中心工作人员也于近日回应说，版权费的分配方案目前仍需协商。

Since the gauge covariance of the original system are kept in every step of calculation process, we apply the techniques to calculate the quark propagator in presence of an arbitrary gluon field is calculated gauge and Lorentz covariantly and a consistent result is obtained.

鉴于此方法在计算过程的每一步都保持了系统原有的协变性，我们应用它计算了含有胶子场的规范和洛仑兹协变的夸克传播子。

The price for the plowshares and mattocks was two-thirds of a shekel, and a third of a shekel for sharpening the axes and for setting the ox-goads.

磨快犁和锄的价钱是三分之二＂协刻耳，＂磨快镰刀或装制刺针是三分之一＂协刻耳。

With strong support from china racing pigeon association and beijing racing pigeon association ,the biaoyou international racing pigeon center was established by beijing biaoyou racing pigeon company to the south of beijing daxing wildlife zoo.the center occupies a total area of 35 mu and consists of 42 3-10-meter pigeonries (more than 1500 square meters in total),including observation room.

在中国鸽协、北京市鸽协的热情关心和鼎力支持下，北京飙友鸽业在北京大兴野生动物园南侧设立飙友国际赛鸽中心。

Based on probability theory, a method for describing and calculating the collision probability between rendezvous and docking vehicle and debris is presented, and the method involves quantitatively analyzing the collision probability using quasi maximum instantaneous collision probability and total collision probability. The method calculating the indexes is developed, and the input required to perform a calculation includes the respective state vectors, position error covariance matrices and physical sizes of objects involved.(3) Two methods to analyze relative trajectory safety between chaser and target are developed, which are 3-sigma ellipsoid based methodology and collision probability based methodology.

1分析了交会对接各阶段面临的主要轨迹安全威胁，阐述了被动和主动安全策略、目标器的交会对接控制区域等保证交会安全的措施；(2)基于概率思想发展了线性和非线性运动情况下飞行器与空间碎片的碰撞判断方法，提出采用总碰撞概率和拟最大瞬时碰撞概率来综合描述飞行器与空间碎片的碰撞危险程度，推导了通过飞行器和空间碎片各自的状态矢量、位置误差协方差矩阵以及形状尺寸来计算碰撞概率的公式；(3)提出了两种分析追踪器和目标器之间相对轨迹安全的新方法：基于3σ椭球的轨迹安全分析方法和基于碰撞概率的轨迹安全分析方法。

Throughout comparing the above estimating methods, we have the following results: the estimators of the moments of the errors does not depend on the random effects, and that of the random effects does not depend on the errors, and then the corresponding asymptotic variances are very simple and optimal; when the random effects are multivariate, we can not construct different estimating equations for the random effects and errors respectively, which results that the asymptotic covariances of estimation are very complex and then the estimating efficiency is bad.

比较上述两种估计法，我们发现：当随机效应是一维的时侯，误差的各阶矩的估计不依赖不可观测的随机效应，随机效应的估计也不依赖误差，因此，估计的渐近方差结构特别简单也是最优的；而当随机效应是多维的，因为随机效应的协变量的影响，我们没有办法针对随机效应和误差的各阶矩分别建立估计方程，这导致所得的估计的渐近方差或者协方差矩阵特别复杂，从而估计的效果不是很好。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。