使用SGA软件检验Shot-Pro遥爆系统的同步性能

本文分析了Shot-Pro遥爆系统的工作过程、编码器零时间校准和电台延迟校准原理，介绍了SGA软件的使用及应用SGA软件检验Shot-Pro遥爆系统同步性能的方法，并研究了这种方法的测试精度和应用范围。     

遗传算法的全局收敛性和计算效率分析*

本文应用齐次有限马尔科夫链分析了简单遗传算法、最优保存简单遗传算法和自适应遗传算法的收敛性，然后对计算效率进行了定性分析，得到了指导基因操作策略设计的极限分布概率原则。     

新型第二代丙烯酸酯结构胶

介绍了低臭味，低毒性，低刺激性及晾置时间较长的第二代丙烯酸酯结构胶（ＳＧＡ）的制备方法，讨论了丙烯酸酯类单体，氧化剂／还原剂及阻聚剂等原料品种及加入量对胶粘剂性能的影响。     

利用目标函数梯度的遗传算法

多数遗传算法在搜索解时没有充分利用其问题域的知识.提出了一类新的改进的适应度函数的遗传算法.它考虑了函数在搜索点的函数值及其变化率,并将该信息加入适应度函数,使得按概率选择的染色体不但具有较小的函数值(对极小化问题而言),而且具有较大的函数值变化率.实验结果表明,这类方法的收敛速度明显高于标准遗传算法.     

A new approach based on orthogonal bases of data space to decomposition of mixed pixels for hyperspectral imagery

A new algorithm for decomposition of mixed pixels based on orthogonal bases of data space is proposed in this paper. It is a simplex-based method which extracts endmembers sequentially using computations of largest simplex volumes. At each searching step of this extraction algorithm, searching for the simplex with the largest volume is equivalent to searching for a new orthogonal basis which has the largest norm. The new endmember corresponds to the new basis with the largest norm. This algorithm runs very fast and can also avoid the dilemma in traditional simplex-based endmember extraction algorithms, such as N-FINDR, that it generally produces different sets of final endmembers if different initial conditions are used. Moreover, with this set of orthogonal bases, the proposed algorithm can also determine the proper number of endmembers and finish the unmixing of the original images which the traditional simplex-based algorithms cannot do by themselves. Experimental results of both artificial simulated images and practical remote sensing images demonstrate the algorithm proposed in this paper is a fast and accurate algorithm for the decomposition of mixed pixels.     

Biogeography and geo-sciences based land cover feature extraction

This work proposes a biogeography and geo-sciences based soft computing technique which is an extension of original biogeography based feature extraction algorithm using the concept of entropy inspired from the geo-sciences phenomenon of mantle convection and dynamics of the earth. This algorithm uses surface entropy in the relevant band of multi-spectral images as the basis of calculating the habitat suitability index which in turn forms the basis of identifying different terrain features in the satellite image. The proposed work has been primarily developed for the purpose of finding the applications of geo-sciences in developing computationally intelligent models. This may lead to another concept of process randomization, generation of virtual scenarios, etc. which are important ingredients in battlefield assessment. The proposed feature extractor algorithm has been applied on the datasets of Alwar region in Rajasthan and Patalganga area in Shivalik ranges. The results indicate that our proposed geo-sciences based classifier is highly efficient in extracting land cover features. Further when integrated with hybrid bio-inspired intelligent classifier proposed in our previous work, it improves its classification efficiency and outperforms the earlier probabilistic classifiers, recent soft computing classifiers such as membrane computing, hybrid FPAB/BBO, extended non-linear BBO, etc. and the very recent hybrid ACO2/PSO/BBO classifier proposed by us 0080 and 0105. Our results conclude that the classifier based on our proposed model is the best known classifier developed till date. The proposed model is flexible and can adapt itself to suit to a large number of classification problems including mixed pixel resolution, face recognition, pattern recognition, etc. whereby entropy can be simply calculated in any other band or according to its standard definition and hence feature extraction can be made.     

Dual functions of Mdt1 in genome maintenance and cell integrity pathways in Saccharomyces cerevisiae

Recent evidence indicates considerable cross‐talk between genome maintenance and cell integrity control pathways. The RNA recognition motif (RRM)‐ and SQ/TQ cluster domain (SCD)‐containing protein Mdt1 is required for repair of 3′‐blocked DNA double‐strand breaks (DSBs) and efficient recombinational maintenance of telomeres in budding yeast. Here we show that deletion of MDT1 (PIN4/YBL051C) leads to severe synthetic sickness in the absence of the genes for the central cell integrity MAP kinases Bck1 and Slt2/Mpk1. Consistent with a cell integrity function, mdt1Δ cells are hypersensitive to the cell wall toxin calcofluor white and the Bck1–Slt2 pathway activator caffeine. An RRM‐deficient mdt1‐RRM0 allele shares the severe bleomycin hypersensitivity, inefficient recombinational telomere maintenance and slt2 synthetic sickness phenotypes, but not the cell wall toxin hypersensitivity with mdt1Δ. However, the mdt1‐RRM(3A) allele, where only the RNA‐binding site is mutated, behaves similarly to the wild‐type, suggesting that the Mdt1 RRM functions as a protein–protein interaction rather than a nucleic acid‐binding module. Surprisingly, in a strain background where double mutants are sick but still viable, bck1Δmdt1Δ and slt2Δmdt1Δ mutants differ in some of their phenotypes, consistent with the emerging concept of flexible signal entry and exit points in the Bck1–Mkk1/2–Slt2 pathway. Overall, the results indicate that Mdt1 has partially separable functions in both cell wall and genome integrity pathways. Copyright © 2009 John Wiley & Sons, Ltd.     

基于Oracle服务器Cache调整与监控

本文讨论了高速缓存大小时Oracle数据库服务器性能的影响,就高速缓存活动的监视给出了一个统计过程,并通过实例说明为获得服务器最优性能而调整高速缓存大小的方法。     

Oracle数据库的启动与关闭方式

本文简要介绍了Oracle数据库的多种启动和关闭方式，结合数据库系统的管理经验，讨论了每一种方式的工作机制，特点及适用场合。     

Windows平台上Oracle数据库的系统性能优化

论述了 Windows 2000 Server 平台上 Oracle9i 数据库的系统优化及其实现,阐述了如何利用 Windows 平台的独特特性调整优化 Oracle9i 数据库,使 Oracle9i RDBMS 的可用性最大化,并与Windows 平台高度集成。