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陕西师范大学学报（自然科学版） 2008年第S1期36卷 8-10页

作者：弋建伟马晓荣陕西职业技术学院实训中心陕西职业技术学院计算机科学系陕西西安710100

维基利亚密码是经典的加密方法。借助英文中字母的统计频率,使用Kassiki测试法和重合指数法给出了分析维基利亚密码的方法,给出了这种分析方法的JavaApplet实例。

关键词：维基利亚密码 Kassiki测试法重合指数

A descriptive account of the challenges and coping strategies of international Chinese Students studying at a New Zealand university

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大众文艺 2012年第3期 244-245页

作者： Fen Lu(Zhejiang Changzheng vocational &technical college 310023) Zhejiang Changzheng vocational &technical college 310023

Introduction As in many other nations,international student numbers in New Zealand have grown exponentially in the past *** students account for 30% of all international students studying in New Zealand

关键词： In A descriptive account of the challenges and coping strategies of international Chinese Students studying at a New Zealand university IELTS 英语水平考试

Multiple constraints QoS multicast routing optimization algorithm in MANET based on GA

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Progress in Natural Science:Materials International 2008年第3期18卷 331-336页

作者： Baolin Sun a,c, Shangchao Pi b, Chao Gui a, Yue Zeng d, Bing Yan a, Wenxiang Wang c, Qianqing Qin c a School of Computing, Hubei University of Economics, Wuhan 430205, china b college of Science, Zhongyuan University of Technology, Zhengzhou 450007, china c State Key Laboratory of Information Engineering in Surveying, Mapping & Remote Sensing, Wuhan University, Wuhan 430079, china d department of Computing, Jiangxi vocational college of Finance and Economics, Jiangxi 332000, china School of Computing Hubei University of Economics Wuhan 430205 China college of Science Zhongyuan University of Technology Zhengzhou 450007 China State Key Laboratory of Information Engineering in Surveying Mapping & Remote Sensing Wuhan University Wuhan 430079 China department of Computing Jiangxi Vocational College of Finance and Economics Jiangxi 332000 China

Usually multiple quality of service (QoS) guarantees are required in most multicast applications. This paper presents a multiple con-straints algorithm for multicast traffic engineering in mobile ad hoc networks (MANET). The proposed algorithm is a new version of multiple constraints QoS multicast routing optimization algorithm in MANET based on genetic algorithm (MQMGA). The proposed MQMGA can optimize the maximum link utilization, the cost of the multicast tree, the selection of the long-life path, the average delay and the maximum end-to-end delay. Experimental result shows that the approach is efficient, has promising performance in multicast traffic engineering and for evaluating the route stability in dynamic mobile networks.

关键词： Ad hoc network Multicast routing QoS Genetic algorithm

基于改进的Liu混沌系统序列的图像加密算法

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计算机工程与应用 2009年第35期45卷 188-191页

作者：黄晗文韩凤英杨幸湖南大学计算机与通信学院长沙410086 湖南工业职业技术学院信息工程系长沙410208 长沙航空职业技术学院长沙410014

为了提高混沌序列的复杂性和伪随机性,首先,对Liu混沌系统生成的混沌序列进行了改进,使改进后的序列具有理想的伪随机特性;然后,利用改进的Liu系统混沌序列对图像进行加密,提出了置乱与替代相结合的加密算法。实验表明该算法具有较强的... 详细信息

为了提高混沌序列的复杂性和伪随机性,首先,对Liu混沌系统生成的混沌序列进行了改进,使改进后的序列具有理想的伪随机特性;然后,利用改进的Liu系统混沌序列对图像进行加密,提出了置乱与替代相结合的加密算法。实验表明该算法具有较强的抵御穷举攻击、统计攻击、已知明文攻击能力,因此,算法具有较高的安全性。

关键词：混沌改进的Liu混沌系统序列图像加密替代置乱

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复杂水力条件下的坝坡渗流及稳定性分析

水电能源科学 2011年第11期29卷 77-79,69页

作者：王刚德州职业技术学院建筑园林工程系山东德州253000

针对库水位变化和降雨会使坝坡稳定性分析更为复杂的问题,基于非饱和渗流理论,借助GEO-STU-DIO软件对某土石坝进行数值模拟,研究了该坝在水位骤升、水位骤降及降雨情况下坝体内的渗流情况,以极限平衡原理和Morgenstern-Price条分法为基... 详细信息

针对库水位变化和降雨会使坝坡稳定性分析更为复杂的问题,基于非饱和渗流理论,借助GEO-STU-DIO软件对某土石坝进行数值模拟,研究了该坝在水位骤升、水位骤降及降雨情况下坝体内的渗流情况,以极限平衡原理和Morgenstern-Price条分法为基础分析了坝坡产生滑移的最小安全系数变化规律。结果表明,复杂水力条件下不利于坝坡的稳定性,且坝坡安全系数变化呈现出一定的规律性。

关键词：渗流坝坡非饱和土稳定分析安全系数降雨

枚举单体型组装问题多个最优解的遗传算法设计

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计算机工程与应用 2010年第11期46卷 7-9,17页

作者：谢民主刘新求湖南师范大学物理信息与科学学院长沙410081 湖南师范大学数学与计算机科学学院长沙410081 湖南工程职业技术学院基础科学系长沙410151

单体型组装问题就是根据个体基因组测序获得的DNA序列数据重构出该个体的一对单体型。目前单体型组装问题的各种优化计算模型已有相关的启发式算法和参数化精确算法,但是这些算法只能得出一个最优解,即一对单体型。可是生物问题的最优... 详细信息

单体型组装问题就是根据个体基因组测序获得的DNA序列数据重构出该个体的一对单体型。目前单体型组装问题的各种优化计算模型已有相关的启发式算法和参数化精确算法,但是这些算法只能得出一个最优解,即一对单体型。可是生物问题的最优解往往不是唯一的,或者真实解可能只是接近最优的。该文设计了一个新的能枚举出最优的多个解的遗传算法。实验结果表明该算法具有较高的单体型重建精度,并为生物学家根据领域知识在算法获得的多个解的基础进一步选择提供了可能。

关键词：单核苷酸多态性单体型启发式算法生物信息学

Research and Development of Product Model Based on CNC Technology

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Preparation and Microstructure of Spinel Zinc Ferrite ZnFe_2O_4 by Co-precipitation Method

E-Business·Creative Design·Manufacturing——2009 IEEE 10th International Conference on computer-Aided Industrial Design & Conceptual Design（CAID&CD’2009）

作者： Wang Lixia Yang Qiuhe Hangzhou vocational and technical college Hangzhou Zhejiang 310018 china

Analyze method of Material selection,splicing and surface treatment and so on in the process of the development of product *** difficulty of data conversion from the 3-dimensional modeling data to the CNC data has been solved;the split principle of the shape of a model has been established,and a complete set of products based on the CNC model making has been developed.

关键词： design CNC model split splice

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Journal of Wuhan University of Technology(Materials Science) 2009年第6期24卷 927-930页

作者：任平 department of Energy Sources and Environment Engineering Shanghai University of Electric Power

Spinel zinc ferrites ZnFe2O4, prepared by co-precipitation method using the zinc nitrate Zn（NO3）2·6H2O and ferric nitrate Fe（NO3）3·2H2O as the raw materials, were characterized by the thermo gravimetric analysis （TG） and differential scanning calorimeter （DSC）, X-ray diffraction （XRD） and scanning electron microscope （SEM）. The influence of synthesis conditions, such as Zn/Fe molar ratio, pH value, the sintering temperature and time, on the microstructures was detailedly investigated. The relationships between the microstructures and the synthesis conditions were discussed. The results show that the pure spinel zinc ferrites ZnFe2O4 are formed when the Zn/Fe molar ratio is 1.05∶2 at pH=8.5 or Zn/Fe molar ratio is 1∶2 at Ph=9-10, and the precursors are sintered at 1100 ℃ for 4 h. Especially no other phases are observed when the Zn/Fe molar ratio is 1∶2 at pH=10 and the precursor is sintered above 700 ℃ for 4 h. The higher sintering temperature and longer sintering time contribute to grain growth.

关键词： zinc ferrites ZnFe2O4 microstructures co-precipitation

ON NONLINEAR ELLIPTIC HEMIVARIATIONAL INEQUALITIES OF SECOND ORDER

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Acta Mathematica Scientia 2004年第3期24卷 451-462页

作者： Leszek Gasinski Nikolaos S.Papageorgiou Institute of computer Science Jagiellonian University ul. Nawojki 11 30072 Cracow PolandDepartment of Mathematics National Technical University Zografou Campus Athens 15780 Greece

In this paper, a nonlinear hemivariational inequality of second order with a forcing term of subcritical growth is studied. Using techniques from multivalued analysis and the theory of nonlinear operators of monotone ... 详细信息

关键词： Locally Lipschitz function Clarke subdifferential measurable selection pseudomonotone operator generalized coercive operator Rayleigh quotient surject operator

A Study On Data Mining Algorithm Gragh-based

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A Study On Data Mining Algorithm Gragh-based