ZHAO Yue-yu , YI Zhuang-peng , WANG Lian-hua
Abstract:This paper is concerned with the effects of the initial stress in steel tube on the in-plane ultimate bearing capacity of CFST(Concrete Filled Steel Tube)arch bridge,through the introduction of the constitutive equations of CFST with initial stress.A fini
ZHU Zhi-wen , CHEN Zheng-qing , GU Ming
Abstract:Based on arbitrary Lagrangian-Eulerian description combined with a second-order Projection scheme and finite volume discretization,this paper presents a CFD method to evaluate the fluid field around the bridge deck to obtain aerodynamic forces,followed by
HE Yong-jun , LI Jia , ZHOU Xu-hong
Abstract:By applying the concept of reticulated mega-structure to conventional spherical reticulated struc- tures,a new structure-spherical reticulated mega-structure was presented.The rib-ring and kiewitt spherical reticulated mega-structure were investigated.The
BU Liang-tao , YE Zhen , HU Shang-yu
Abstract:An experimental study was conducted on the flexural behavior of Reinfoced concrete beam strengthened by high capability ferroeement mortar subject to secondary load.Based on the eomparision between test results of four reinforced beams strengthened by fer
CHEN Da-chuan , SHANG Shou-ping
Abstract:A U-type masonry model based on the real masonry structure was established for the experimental and theoretical study of the deformation and cracking behaviors at the top floor in masonry tier buildings with the influence of different vertical compression
LIU Zi-jian , LI Zhen-zhu , ZHAO Shi-yi
Abstract:A method of structure parameter optimization,based on the artificial neural network(ANN)and genetic algorithm(GA)was proposed.Based on the analysis result of the coupling model method of rigid and flexible bodies,a mathematical model of system was built w
Abstract:Using the theory of optimization and the principle of geometry,the existing algorithm of the minimum zone for the evaluation of planar straightness error was improved.Based on visualization techniques, the visualized design for its two endpoints link line
XIE Hong , HE Yi-gang , PENG Min-fang , ZHANG Bo
Abstract:This paper presents a model and architecture of discrete Hopfield neural networks.By using the characters of discrete Hopfield neural networks,whose evolvement procedure is a computing course of associative memory suitable to memorize the orthogonal model
Abstract:针对摄像机静止的情况,提出了一种可运用于实时监控中的运动目标检测与跟踪的方法.采用更新函数实现背景实时更新,通过差分算法检测运动目标.在跟踪模块中,提出建立帧间目标“关系矩阵”实现多个运动目标匹配,并采用卡尔曼滤波器预测目标参数,在运动目标相互遮挡的情况下,根据预测参数跟踪目标,获得目标轨迹.通过多个图像序列测试,算法具有良好的实时性和适应环境变化的能力.
LONG Shu-yao , LIU Kai-yuan , LI Guang-yao
Abstract:A new meshless local radial point interpolation method for the analysis of functionally graded ma- terials is proposed.Radial basis function(RBF)coupled with a polynomial basis function was used as a trail function,and a Heaviside function was used as a t
WANG Ling-ling , HUANG Gui-fang , MENG Yan , HUANG Wei-qing , ZOU Bing-suo
Abstract:The influence of CeCl3?7H2O on the deposition parameters and the properties of the alloys were dis- cussed.It has been found that the temperature of the bath plays a vital role in both the depopsition rate and the corrosion resistance performance.With the
YANG Shi-qiang , LEI Xiao-juan , LI Yuan-shan , CHEN Zhen-hua
Abstract:Sn-20Bi lead-free solders were studied in alloying method.Adding alloy element Ag,In,Ga or Sb into Sn-20Bi,the influences of the change of Ag,In,Ga or Sb contents on their microstructure and physi- cal properties were investigated.The results showed that,
WU Xiang-Wei , CHEN Zhen-Hua , YAN Hong-Ge
Abstract:Additives such as oleic acid and stearic acid are often used to improve the dispersion and loading of powder in composite.In this study,the surface modification of antimony doped tin oxide(ATO)nano-powders with stearic acid and tetrabutyl titanate was inv
KUANG Ya-fei , YOU Jun-fei , ZHOU Hai-hui , LI Yun-fei , CHEN Jin-hua
Abstract:采用脉冲电位法在钛电极表面合成了聚苯胺-三氧化钨(PANI-WO_3)复合膜.扫描电镜照片表明,粒径100~150 nm的WO_3颗粒较好地分散在纳米纤维状PANI中, WO_3在膜中的嵌入对PANI的形貌没有产生明显的影响.研究结果表明,PANI-WO_3膜具有良好的导电性,有着比单纯纳米纤维PANI更小的电化学阻抗.与Pt/PANI电极相比较, Pt/PANI-WO_3电极对甲醛的电化学氧化呈现出了更好的催化活性;在相同的PANI膜厚和Pt载量的条件下,Pt/PANI-WO_3电极对甲醛氧化催化活性是Pt/PANI电极的2~3倍.
ZHANG Zheng-qi , RONG Shui-lian , HU Hua , LI Xin-mei
Abstract:Hirudin gene was cloned into the plant expression vector pBI121 by DNA recombinant method, and the plant recombinant expression plasmid pBI121-hir was contructed successfully,
ZHOU Bing , LIU Feng-wei , QI Jian-yong , JIANG Sheng-tian , XU Xin-hua
Abstract:研究了碳酸铯催化酚与卤代烃反应制备烷基芳醚.以碳酸铯作催化剂,氢氧化钾作碱,DMF作溶剂,室温下,在分子筛存在下,苯酚、萘酚、3,5-二叔丁基苯酚及4-[二(4 -叔丁基苯基)苯基甲基]苯酚与溴乙烷、溴丁烷及苄溴等反应形成相应的烷基芳醚,收率为90%~96%.结果表明,碳酸铯可有效地催化酚与卤代烃反应.
LU Pei , LI Cai-ting , ZENG Guang-ming , ZHAI Yun-bo , LIU Tao
Abstract:考查了10%,20%,30%,40%的Ce-ACF对NO的净化能力,将10?-ACF与HNO_3-ACF、30%Cu-ACF和20%La-ACF对NO的净化能力进行实验比较;并分别对10%,20%,30%,40%的Ce-ACF进行了热重分析(TG)实验,将10?-ACF,HNO_3-ACF.30%Cu-ACF,20%La-ACF的TG曲线进行对比分析,最后选择性地进行了扫描电镜(SEM)实验.结果表明,负载稀土元素的ACF能有效改善其催化性能,负载10%的Ce时能大幅提高ACF在较低温度时的净化NO的活性,其低温活性较20%La-ACF要好,当温度大于260℃时10?-ACF对NO的净化效率均在90%以上.
WU Ren-yong , DUAN Zheng-hua , ZHU Guang-xi
Abstract:Presents a measurement-based call admission control(CAC)algorithm was presented.The scheme measures the state parameters of cellular system,i.e.,the number of handoff-dropping calls and the handoff-dropping probability at each interval,and forecasts the p
YOU Zhi-qiang , ZHANG Da-fang , CAI Hong-bo , QIAO Zhong-liang
Abstract:针对待排数据来源的多样性,提出了多数据源数据等概率分档统计插入排序算法.该算法将现代统计学的新结论、新方法应用于传统的排序算法.新的排序算法达到了时间复杂度的下界O(n),且具有更广的应用范围.实验表明,当数据量较大时(n>1000),此算法优于其他同类算法.
CAI Li-jun , SHEN Xiao-qiao , LIN Ya-ping , JIANG Lin-bo
Abstract:从分类算法和特征基因选择两个方面研究基因表达数据的分类,将传统的Support Vector Machines(SVM)算法和K-nearest neighbor(KNN)算法两者结合成为一种应用于基因表达数据分类的算法,并针对基因表达数据分类数据集“样本少,维数高”的特点,提出了一种改进的基于相关性的递归特征消除算法(简称为C-RFE),消除了数据冗余.实验结果表明,新方法可有效提高分类准确率和特征选取的效率.
PENG Man-man , NING Chen , LI Ren-fa
Abstract:For high density and large traffic WLAN environment,we have presented a reliable AP handoff mecha- nism based on load balance.We used center structure:when an AP's load exceeded the load threshold,the AP started up force handoff.Using the loads of neighbo
Abstract:We have investigated the function spaces of algebraic L-domain by means of the new definition of step function introduced by Prof.Liang,and have proved that,if L_1 and L_2 are both algebraic L-domains,then the function space[L_1-L_2]is an algebraic L-doma
Abstract:The fast algorithm for Toeplitz systems was studied.We first obtained the algebraic structure when M band wavelet transform was performed to Toeplitz matrix.By using numerical experiment under a pre- cision,we showed that the matrix after wavelet transfor