一种加密算法在信息化弹药引信装定系统中的应用研究

针对信息化弹药引信装定系统中数据的安全性问题，通过对DES加密算法和SDES加密算法的分析，提出了采用SDES加密算法实现引信多数据装定信息加密的方法，并设计出了引信多数据装定芯片解密电路。最后通过仿真，验证该模块可以正确实现引信信息的加密和解密的同时还具有较好雪崩效应。     

莱钢宽厚板主电机在线状态检测与故障诊断系统的研究与应用

钢铁行业竞争激烈,各公司为提高自身竞争力,采用各种手段降低成本,其中最常用的手段是使用先进的设备、先进的控制技术、先进的生产工艺和规模经营。就宽厚板主电机在线状态检测与故障诊断系统的研究与应用,为主电机稳定运行提供可靠的保证。     

VoIP协议栈的安全性研究

本文提出对VoIP协议栈的结构分析,包括VoIP信令（SIP协议）,会话描述协议（SDP）,密钥的建立（SDES,,MIKEY,ZRTP）,和SRTP协议,对VoIPx协议栈的相关协议作了简要说明,并分析了其相关的安全性。重点针对SIP、SRTP协议和ZRTP协议分析了其安全隐患并提出相关的改进方案。     

Attacks of simple block ciphers via efficient heuristics

Recent years have witnessed a significantly increased interest in computer security. Efforts in the area of design of ciphers and their attacks have progressed at almost competing rates. Though brute force attack is successful for simple ciphers, cryptanalysis of complex ciphers warrants specialised techniques and powerful computing systems. Several heuristic techniques have assumed significance over the past few years, in the context of attacks of simple stages of certain ciphers. This paper presents a systematic study of efficient heuristics in the successful attacks of some block ciphers which though simple are representative ones in computer security parlance.     

Energy resources—The ultimate solution

Energy is vital for all types of activities on earth whether living or non-living. This paper first discusses some misconceptions about energy and energy sources. A new classification of energy sources, contrary to traditional renewable and non-renewable sources, is then presented. The energy sources are classified as sun-dependent energy sources (SDES) and sun-independent energy sources (SIES). Total energy use of the world, today and in the long future, and a possible energy scenario is proposed in the light of this new classification of energy sources. Unlike previous energy scenarios which cover few decades to a maximum of few centuries, this paper presents the energy use and policy guidelines for long into the future keeping in view the energy sources available at that time, their optimum utilization, total world population and energy-use-per-person constraints.     

超临界抗溶剂制粒装置的现状及其展望

超临界抗溶剂法是一种新型超细微粒制备技术,现已在许多领域得到广泛应用。本文简要陈述了超临界抗溶剂技术的基本原理、装置组成和操作方式,详细阐述了超临界抗溶剂装置喷嘴部件的演进,从该角度介绍了GAS制粒装置、ASES制粒装置、SEDS制粒装置和SAA制粒装置的发展和优化历程,并对超临界抗溶剂制粒装置的多功能化、喷嘴的进一步优化、结晶釜的可视化等提出展望。