简要

Firstly, illustrate the fundamentals (differential-integral optimizing theory) of the category of algorithms briefly in the sight of differential and integral calculus. Then two examples of the category of algorithms are listed.

首先从函数逼近的角度论述了数值积分与全局最优化的关系，随后从微积分的基本原理和定积分的定义出发对该类算法的几何意义和数学基础作了简要论述；在此基础上给出了该类算法的几个具体实现。

Recent effort in this laboratory to measure the state-resolved differential cross section of elementary bimolecular chemical reactions is briefly reviewed.

简要地综述最近其实验室在用态分辨微分截面测量基元双分子化学反应方面所做出的努力。

In chapter 1, some examples of studying differential geometry's objects in the view of CAGD are introduced. The background and the results of the problem studied in this paper are also presented.

在第一章中，介绍了前人运用计算几何的观点来考察微分几何的研究对象的几个范例，并简要说明了本文的研究背景与研究结果。

This paper generalizes the origin, diffuseness and distributing of the veranda style ar－chitecture in the world, and expatiates the evolution of the veranda style architecture in China.

摘 要：本文简要概括了外廊式建筑在世界的起源、传播与分布，并重点阐述了外廊式建筑在中国的发展。

Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.

我们简要讨论了对该能谱的可能解释，包括传统的宇宙线扩散模型以及潜在的邻近额外成分。

Then how to realize network security of J2ME based on Bouncy Castle is discussed,including to encrypt the data which are transmitted to the server and to verify the client by using digest and digital signature .

简要介绍了Bouncy Castle J2ME加密包，并具体探讨了如何用Bouncy Castle API来实现J2ME的网络安全，包括加密传输的数据和使用摘要及数字签名对客户端进行验证。

The full text has a overview of smart card technology and information security knowledge, focused on the respects of two classic DES and RSA key system, authentication technology, massage digest,, digital signatures.

全文对系统涉及的智能卡技术及信息安全知识作了简要说明，重点介绍了DES和RSA两种经典密钥体制、认证技术、消息摘要、数字签名。

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。

The history of digital signal processing and the digital signal processor is reviewed.

文章简要介绍了"数字信号处理"与"数字信号处理器"的发展历史。

This article is divided into three parts: In the first part, the development situation of digital television technology is introduced.

第一部分简要介绍了当今数字电视技术的发展状况。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新