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  • 1  Partheno Genetic Algorithm and Its Application
    Li Maojun Tong Tiaosheng Luo Longfu
    1998, 25(6).
    [Abstract](1005) [HTML](0) [PDF 0.00 Byte](118) [Cited by](54)
    Abstract:
    Considering the deficiency of Traditional Genetic Algorithms(TGA)in solving combinatorial optimization,a Partheno Genetic Algorithm(PGA) is proposed.PGA does not use crossover operators of TGA,while use gene exchange operators that have the same function
    2  Physical and Chemical Properties of Magnetized Water
    朱元保 颜流水 曹祉祥 文陵飞 陈宗璋
    1999, 26.
    [Abstract](109) [HTML](0) [PDF 0.00 Byte](1) [Cited by](41)
    Abstract:
    3  Physical and Chemical Properties of Magnetized Water
    Zhu Yuanbao Yan Liushui Cao Zhixiang We Lingfei Chen Zongzhang
    1999, 26(1)-25,32.
    [Abstract](1280) [HTML](0) [PDF 0.00 Byte](146) [Cited by](41)
    Abstract:
    In this paper,the conductivity,pH,dissoived oxygen,density,evaporativity and IR,NMR,UV spectrum of magnetie water under various magnetized condition have been studied.It is found that pH,dissoived oxygen and evaporativity are increased,UV absorption peak
    4  Study of Damage Assessment of Concrete Structures by Strain Model Method
    Zhou Xianyan Shen Pusheng
    1997, 24(5).
    [Abstract](1194) [HTML](0) [PDF 0.00 Byte](146) [Cited by](40)
    Abstract:
    Using strain model for structural damage diagnosis is one of new research topics.Authers studied the principle and method of strain model measurement theoretically.From the test and analysis of concrete frames,it is proved that strain model is more sensit
    5  Empirical Research on Technology Spillover Effects of Foreign Direct Investment in China
    赖明勇 包群
    2003, 30(4).
    [Abstract](1260) [HTML](0) [PDF 0.00 Byte](164) [Cited by](34)
    Abstract:
    运用协整分析和误差修正模型研究外商直接投资(FDI)对我国国内技术进步的影响作用,同时对FDI和国内投资的技术进步效应做了比较分析。分别采用全要素生产率、资本产出率两个指标来度量技术进步,利用我国1979~2000年的样本数据。实证结果表明,FDI对国内技术进步具有较大的技术外溢效应,而且误差修正模型检验结果表明FDI的技术外溢效应存在着一定的时滞。相比较而言,国内投资对我国技术进步的推动作用较小。
    6  Oscillation of Neutral Difference Equations with Continuous Arguments
    XIONG Wan-min WANG Zhi-cheng
    2001, 28(1).
    [Abstract](1069) [HTML](0) [PDF 0.00 Byte](140) [Cited by](31)
    Abstract:
    The oscillation of neutral difference equation with continuous arguments is discussed.Some sufficient conditions for the oscillation of solutions of the eqution are established.
    7  A Method for Fault Diagnosis of Analog Circuit by BP Neural Network
    何怡刚 梁戈超
    2003, 30(5).
    [Abstract](887) [HTML](0) [PDF 0.00 Byte](136) [Cited by](26)
    Abstract:
    提出了一种采用改进型的BP神经网络诊断模拟电路故障的新方法。介绍了包括附加动量法和自适应学习速率法在内的改进型的BP网络算法,其中附加动量法是在每一个权值的变化上加上一项正比于前次权值变化量的值,不仅考虑了误差在梯度上的作用,而且考虑在曲面上变化趋势的影响;自适应学习速率是根据误差函数值的变化对学习率进行实时调整,可以保证网络总是以最大的学习速率学习。最后,本文给出了仿真实例,实验证明所提出的方法与传统方法相比有更好的实时性和诊断效率。
    8  Calculation of the Shear Lag in Thin Walled Box Girders by the Finite Segment Method
    Luo Qizhi
    1991, 18(2)-38,55.
    [Abstract](901) [HTML](0) [PDF 0.00 Byte](133) [Cited by](25)
    Abstract:
    The homogeneous solution of the differential equation for the shear lag in thin walled box girders is taken as the displacement pattern of finite element. Based on the variational principle, a finite segment method is proposed for analysing the shear lag
    9  Effects of Processing Conditions on the Microstructure s of Glass-ceramics Prepared from Iron and Steel Slag
    XIAO Han-Ning DENG Chun-ming PENG Wen-qin
    2001, 28(1).
    [Abstract](1035) [HTML](0) [PDF 0.00 Byte](131) [Cited by](23)
    Abstract:
    通过对材料组成和结构的设计,获得了高炉渣和钢渣用量为55%-60%,抗弯强度大于300MPa,显微硬度达12GPa,耐磨性比GCr15钢高26倍的玻璃陶瓷。探讨了微晶化工艺条件对钢铁废渣玻璃陶瓷的显微结构和性能的影响,在一定工艺条件下所制备的玻璃陶瓷的晶相含量可达90%以上,晶粒大小仅0.1-0.3μm,多为等轴柱状晶,以辉石类为主晶相。
    10  Phytoremediation of Cadmium Pollution and Enzyme Activity in Soil
    LIU Yun guo LI Xin XU Min GAN Hai ming
    2002, 29(4).
    [Abstract](1041) [HTML](0) [PDF 0.00 Byte](134) [Cited by](22)
    Abstract:
    用盆栽法研究植物对土壤重金属 Cd的吸收富集和植物修复效应、土壤重金属 Cd浓度与土壤酶活性的关系 ,以及经植物修复后不同时间内土壤酶活性恢复情况。研究结果表明 :1植物对土壤 Cd污染具有富集和修复作用 ,但种间存在较大差异 ;2土壤脲酶活性随土壤 Cd浓度的增加而降低 ;3回归分析表明土壤脲酶活性与土壤 Cd浓度显著相关 ,可表示出土壤受 Cd污染程度 ;4受 Cd污染的土壤经过植物修复后 ,脲酶活性得到恢复 ,可根据脲酶活性恢复状况判断植物的修复效果。
    11  Study on the Behavior of Inclinedly Loading Piles
    Zhao Minghua Hou Yunqiu Cao Xiren
    1997, 24(2).
    [Abstract](1071) [HTML](0) [PDF 0.00 Byte](136) [Cited by](21)
    Abstract:
    Based on the current m method hypothesis,an analytical solution to deflection and internal force of flexible piles under inclined loads is presented in this paper,and model tests of flexible piles under inclined loads at various angles are carried out wi
    12  Least-Square Approximate Solutions of A Class of Matrix Problems
    Hu Xiyang Department of Applied MathematicsZhang Lei Hunan Computing Center
    1990, 17(2).
    [Abstract](974) [HTML](0) [PDF 0.00 Byte](148) [Cited by](21)
    Abstract:
    In this paper, we consider the least-square approximate solutions of a class of matrix problems. The expression of the solutions is provided and a numerical method is described.
    13  Power Quality Unitary Quantification and Evaluation Based on Probability and Vector Algebra
    江辉 彭建春 欧亚平 李朝昀
    2003, 30(1).
    [Abstract](1033) [HTML](0) [PDF 0.00 Byte](158) [Cited by](21)
    Abstract:
    电能质量有多个分项指标,必须归一量化,以适应电能商品论质论价的要求,这是电力市场化改革提出的新课题。本文提出了基于日周期的电能质量量化和评价方法,这种方法以概率统计和矢量代数为基础,先将电能质量的分项指标(通常是时间的函数)量化和量一化,再采用矢量代数将分项指标归一量化,得到评价电能质量的综合唯一量化指标。给出了分级评价电能商品质量综合唯一量化指标的方法,使电能商品优质和优价一一对应成为可能,为电力市场输电服务的深入研究奠定了基础。
    14  Experiment and Application of Clay-cement Slurry in Grouting Curtain of Rubbish-buried Site
    ZHANG Ke-neng ZOU Ying-sheng WANG Yi-sun
    1999, 26(5).
    [Abstract](930) [HTML](0) [PDF 0.00 Byte](127) [Cited by](20)
    Abstract:
    The experiment and aplication shows that the clay cement slurry is suitable for grouting curtain in the Nanchang rubbish buried site.The grouting curtain has hige anti permeatinon effectivity and low cost.
    15  Principle and Setups of Multi-layer Spray Deposition Technology
    CHEN Zhen hua YAN Hong ge CHEN Gang ZHANG Fu quan HU Zhong xun FU Jie xing
    2001, 28(5).
    [Abstract](1466) [HTML](0) [PDF 0.00 Byte](148) [Cited by](20)
    Abstract:
    Based on an intensive investigation on the principle and processing of conventional spray deposition technology,a new concept termed as multi layer spray deposition (MLSD) is presented,a novel multi layer spray deposition technology is deveploped to pro
    16  Preparation of Coating of Carbon Nanotube with Silver and SEM Study
    CHEN Xiao-hua ZHANG Gao-ming LI Hong-jian PENG Jing-cui CHEN Zong-zhang
    1999, 26(6)-17,56.
    [Abstract](1713) [HTML](0) [PDF 0.00 Byte](137) [Cited by](18)
    Abstract:
    A method to prepare one dimensional nanoscale composite based on coating of carbon nanotube with metal is proposed.It is found that the complete and satisfactory silver coating on carbon nanotube is achieved by electroless plating.It is also found that th
    17  Studying of Biological Renovation for Soil Cadmium Pollution
    LIU Yun guo YIN Zhi ping
    2000, 27(3).
    [Abstract](1026) [HTML](0) [PDF 0.00 Byte](145) [Cited by](18)
    Abstract:
    以盆栽法研究了Dendronthena morifolium Tzvel,Sabina procumbens,osa chinensis Jacq等10种植物对土壤Cd的吸收及其生物净化效应,试验结果表明:在每千克土壤(风干重)含Cd30mg的处理条件下,短期内未发现植物生长明显受影响现象。在土壤-植物系统中,经过50d的植物吸收,土壤中的Cd下降幅度最小值为0.3542mg/L,最大值为6.37
    18  A Grey Predictive Control System for the Construction of Cable-stayed Bridges
    Fang Zhi Liu Guangdong Wang Guangliong
    1997, 24(3).
    [Abstract](1071) [HTML](0) [PDF 0.00 Byte](136) [Cited by](17)
    Abstract:
    根据灰色系统理论及预测控制理论,结合斜拉桥的施工特点,提出了一个较大为实秀的斜拉桥施工控制系统-灰色预测控制系统,详细介绍了了这种系统的基本思路,技术路线,实施步骤以及实际应用情形,采用该系统可以对斜拉桥的线形和索力实施较为有效的双控。
    19  A Generalization of a Class of Inverse Eigenvalue Problems
    Liao Anping
    1995, 22(2).
    [Abstract](969) [HTML](0) [PDF 0.00 Byte](141) [Cited by](16)
    Abstract:
    By using the generalized singular value decomposition,we give the gener-al solution of a kind of minimization problems. The sufficient and necessary conditions for the existence of the solutions to the corresponding matrix equations are obtained and the g
    20  Grey Assessment of Indoor Air Quality
    LI Nian ping ZHU Chi hui WEN Wei
    2002, 29(4).
    [Abstract](880) [HTML](0) [PDF 0.00 Byte](140) [Cited by](16)
    Abstract:
    Based on the analysis of grey incidence, which is an important part of grey system theory, this paper assesses indoor air quality by the abundant information provided by grey incidence matrix. According to the analysis and comparison with other methods, i
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