Abstract:A simplified design method based on pushover analysis was developed for energy dissipation systems using viscous dampers. The procedure needed to transform a multi-degree-of-freedom system into an equivalent single-degree-of-freedom system. For a given ta

Abstract:Based on the principle of the continuous analysis of interactive frame-shear wall structures,a differential equation of equilibrium was established for frame-shear wall structures in consideration of shear deformation of shear wall.According to the curren

Abstract:The limit state equation of reinforced concrete beam with externally bonded steel was established in accordance with the "Code for Design of Concrete Structures(GB 50010-2002)"and the Teng-Chen Model for designing with reliability index as demanded by the

Abstract:According to the complex behavior of strip foundation beams of pile, the internal stress distribution of foundation beams is influenced by the indetermination and random of the bearing capacity of pile foundations under the beams. Based on the influence o

Abstract:Repeated traffic loading can cause stress intensification at the tip of the defects or cracks in the asphalt mixture of the pavement, resulting in crack propagation in a complex mode from the surface to the bottom and the final failure of the pavement. Th

Abstract:Based on the fractal geometry theory, this paper constructed the fractal geometry of road network, and applied the Hausdorff dimension to the overall evaluation of road network. The geometrical parameters of road network were used to describe its process

Abstract:The bearing capacity of medium sand,which was reinforced with carbon fabrics reinforced plastics(CFRP),was studied.The test method was consolidated and undrained triaxial-test.The effects of the three factors on the bearing capacity of medium sand was tak

Abstract:A mapping function of 3-D single-directional, dual-directional and three-directional infinite elements which can effectively match spatial 20-node finite elements is developed based on the coupling theory of finite and infinite domain. Through the applica

Abstract:A nonlinear finite element method was applied in the research of the collector head spring system of pantograph. The direct constraint procedure, a new and steady solution to the contact problem, was applied to analyzed the collector head and the contact,

Abstract:A rapid manufacture technique of large moulds for sheet metal forming was presented,which was based on discrete cavity mould(DCM).A mechanical hand for cavity forming of the discrete cavity mould was developed,which was constructed with 4 actuator assembl

Abstract:On the assumption of conical keyhole and using geometrical optics theory, a detailed study of the inverse Bremsstrahlung absorption of the plasma in the keyhole in deep penetration laser welding of metals was carried out by tracing a beam ray. The intensi

Abstract:A new on-line measurement approach for pellet density was presented. In the approach, fuzzy neural network modeling was adopted to construct the measurement model for pellet density. In the course of the modeling, fuzzy neural network model was employed t

Abstract:By means of ultrasonic precision proximity sensor, an electrode length real-time measurement and control system, which used industrial control computer as the core and MCGS configuration software as the devebping platform, was developed and designed. The

Abstract:A new harmonic analysis method for electric power systems based on triangle basis functions neural network was presented,the convergence theorem of the algorithm was proposed,and a window function and interpolation algorithm were employed to correct the f

Abstract:This paper presented a new system based on vision for defect inspection of foamed mask packing products.Surface image was divided into two parts: foamed mask region and soleplate region.In the foamed mask region,a synthesized color feature vector based on

Abstract:设计了一种新型的存储器结构单元——锗／硅双层量子点阵列浮栅结构纳米存储器．对存储器样品的C—V测量结果显示了这种结构的P沟道器件有着更加优异的存储性能．数值模拟表明了该器件的编程速度在微秒量级，而保留时间长达10年（约10^8S）．这种新型的存储器结构单元有效地解决了目前硅基纳米存储器存在的工作电压和长久存储之间的矛盾，为硅基纳米存储器的实用化拓宽了道路．

Abstract:By using a MG- 2000 friction tester, the friction and wear performance of Steel/Cu fiber, Kevlar pulp/potassium titanate whisker and carbon fiber reinforced friction materials were investigated to choose reinforcing fibers in friction materials used for S

Abstract:The plating conditions of chemical plating of Fe-P alloy were discussed. The reaction order of each component was also investigated. It was found that the influence of complexing agent was the greatest, followed by oxidant and reductant. The pH and the te

Abstract:以氧化锌精矿为原料，采用湿化学方法制备出ZnO纳米晶须，并就具体的精矿提纯及晶须合成工艺进行了研究．结果表明：经酸溶精矿，净化除杂先得到纯净ZnSO4溶液，然后在70℃以3．1mol／LNaOH溶液沉淀1．25mol／L该ZnSO4溶液合成ZnO前驱体。最后经干燥煅烧可制得ZnO纳米晶须．通过TEM形貌观察和XRD物相分析，所得ZnO为针状结构，直径20～30nm，长度可达350nm，其物相是六方晶系纤锌矿结构．

Abstract:This paper derived the transfer matrix of the bilayer structure composed of left-handed and right-handed materials,and computed the density of states(DOS) along the axis of the finite one-dimensional photonic crystal,which was constructed out of N such bi

Abstract:The effect of sodium nitrite on the crevice corrosion of mild steel was studied by applying the wire beam electrode technique.The corrosion potentials and the electrochemical impedance spectra inside and outside the crevice were measured in 5%NaCl and 5%N

Abstract:研究了安非他酮的电化学特性.在pH=3.5,含0.010 mol/L NaCl的Britton-Robinson缓冲溶液中,安非他酮在汞电极上吸附并发生电化学反应,于-0.87 V处呈现灵敏的极谱波,当有0.002 0%OP存在时,峰电位移至-0.80 V,且峰电流增加数倍.利用此波可测定痕量安非他酮,线性范围为5.0×10-9~5.0×10-7mol/L,检测下限达1.0×10-9mol/L.循环伏安法和脉冲极谱实验结果表明,OP促进安非他酮在汞电极上吸附.

Abstract:通过二苄基二氯化锡与双缩Schiff碱反应，合成了8种新的杂环有机锡（Ⅵ）配合物．通过元素分析、红外光谱、紫外-可见光谱、核磁共振氢谱等物理化学测试，推测了它们的可能结构．结果证明，这些物质均为六配位有机锡化合物．

Abstract:By dividing the characteristics of network-flow change into the characteristic of network-flow history change with memory capability and the characteristic of network-flow current change with random,we proposed a method of based-flow self-adaptive gaining

Abstract:With the development of software industry,software development has entered the stage of distributed concurrent development.Existing software life cycles aim at the traditional concentrate sequence development and cannot suit to the new requirements of dev

Abstract:The data acquisition system based on CAN advanced Bus technology was applied to realize the distributed DAS with 16-channel. The system integrated Embedded system with CAN bus technology and 10-bit data acquisition technology. Several UP- 3000 ARM Embedde

Abstract:把熟知的正整数集N[1，2，3，…]上的Goldbach猜想推广到整数平方的集合N2[1^2，2^2，3^2，…]上去，得到了一些有趣的结果．

Abstract:The asymptotic behavior of solutions for a class of delay differential systems was studied. Under certain conditions weaker than the locally Lipschitz condition freuently used in the literature, we showed that each bounded solution of such systems had a t

Abstract:By applying two trial function approaches, one that introduces a transformation before selecting trial function and one that directly selects trial function, a nonlinear partial differential equation, which is hard to solve by using the regular technique,

Abstract:This paper puts forward the concept of the "reasonable quality" for highway construction projects,analyzes the five combination models for quality-cost,uses Miles means to determine the area of reasonable quality,controls the form of reasonable quality li

Abstract:Within the framework of Markowitz's portfolio theory,this paper analyzes the problem of the optimal portfolio on VaR.By using historical data of return loss to simulate several situations,we built an optimal portfolio model for VaR and proposed the detail