霍兰的涌现性思想评析

霍兰在复杂性系统科学方面提出复杂自适应系统(CAS)理论.他提出的涌现性理论对创新研究具有重要意义.对霍兰的科学思想渊源关系、遗传算法、CAS理论、涌现性方面的奠基性工作加以详细研究和评述,进而确立了霍兰在遗传算法、复杂性系统科学上的奠基性地位.     

基于遗传算法和文法的叶子生成模型

阐述了将两类技术组合的一种方法：用L-systems和遗传算法CA获取一种改写表达式描述树叶模型。L-systems用于构造给定改写表达式，而GA用于改写表达式的适应参数。介绍了用目标函数实现真值参数替换方法，研究结果表明，提出的方法能产生可以接受的输出效果。     

中国传统数学与和

中国传统数学充满了和的精神。数学内部的和谐、读者与作者的和谐、若干数学方法是为维护社会和谐服务的三个方面体现了中国传统数学的和的精神。     

Sociology and political arithmetic: some principles of a new policy science

This paper advances the position that sociology needs to develop an approach to research which focuses on fundamental social problems. In doing so it shares many of the intellectual values and goals of political arithmetic while seeking to move methodologically beyond it. Since such problems are complex they will require, typically, interdisciplinary input and a concomitant approach to the development and appraisal of theories. We are not, therefore, advocating the primacy of sociology but arguing that it has a distinctive part to play in addressing the fundamental problems of the twenty-first century. However, a policy-oriented sociology has also to take up the task, so clearly defined by the tradition of political arithmetic, which is to hold governments to account. Consequently a central principle of a new policy science is that it should contribute to democratic debate about policy.     

基于Haar小波变换的无失真图像压缩

提出了一种利用Ｈａａｒ小波进行图像无失真压缩的算法。对线性预测后的图像进行Ｈａａｒ小波分解，将各子带小波系数根据大小分解成两部分，其位置信息分别通过自适应算术编码进行了有效的压缩。试验结果表明，该算法实现简单，达到了很好的压缩效果。     

模式S应答处理中报头检测算法的研究与实现

叙述了模式S应答信号处理的特点,包括模式S应答信号的格式和相关的目标报头检测算法、置信度判定算法以及检错纠错算法等处理算法。介绍了报头检测算法,包括视频预处理、沿提取、报头脉冲检测、参考功率值计算、交叠测试、功率一致性测试、DF验证和再触发等处理步骤。给出了报头检测算法的FPGA实现方案,采用Verilog HDL语言完成了所有功能模块的设计,并进行了电路仿真实验。仿真结果表明,该方案设计合理,能够快速准确地检测出有效报头脉冲。     

基于WEB课件的安全技术研究与实现

提出并实现了一个基于安全套接字层 (SSL)技术的安全Web课件系统。该系统可为Web客户机和服务器的应用层通信应用软件提供数据加密、信息完整性、实体鉴别和防抵赖等安全服务     

Polynomial Factorization for Servers with Semi-Markovian Workload: Performance and Numerical Aspects of a Verified Solution Technique

Abstract

We investigate polynomial factorization as a classical analysis method for servers with semi-Markov arrival and service processes. The modeling approach is directly applicable to queueing systems and servers in production lines and telecommunication networks, where the flexibility in adaptation to autocorrelated processes is essential.

Although the method offers a compact form of the solution with favourable computation time complexity enabling to consider large state spaces and system equations of high degree, numerical stability is not guaranteed for this approach. Therefore we apply interval arithmetic in order to get verified results for the workload distributions, or otherwise to indicate that the precision of the computation has to be improved. The paper gives an overview of numerical and performance aspects of factorization in comparison to alternative methods.     

暂态电能质量分析中的小波算法及应用

针对当前电力系统存在的暂态电能质量中持续时间短、发生随机性大及不容易检测的特点,提出了基于C语言的小波算法检测暂态电能质量的方法.研究结果表明,小波变换能在时域上对电压暂态瞬时变动的发生时刻进行准确定位,并可利用相应控制系统有效改善电能质量.     

形象工程的历史书写——权力美学的三种标本

中国权力美学的塑造拥有漫长的历史,并给我们留下了三个标本赢政和朱棣的宫式建筑及其符号体系,毛泽东的天安门叙事和当代新建筑浪潮,而支配它们发展的幕后逻辑是权力美学.