• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database

2004 Vol. 17, No. 4

Display Method:
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Genetic Simulated Annealing Algorithm for Time-History Reliability of Aseismatic Structures
ZHANGXin-pei, DONGNa
2004, 17(4): 419-422.
Abstract:
To analyze the time-history reliability of aseismatic structures, an algorithmbased on the genetic simulated annealing and time-history methods was proposed on the basis of the characteristic of structural performance functions for the time-history reliability of aseismatic structures,i. e.they are ...
Finite Element Method for Tunnel with Prefabricated Lining
MAOJian-qiang
2004, 17(4): 423-427.
Abstract:
The interaction between the lining and surrounding rock of a tunnel was taken as a contact problem. On the basis of the principle of virtual work for deformable body, a finite element method for the contact problem was proposed and the procedure for solving an elasto-plastic contact problem was give...
Full-Scale Experiment on Spherical Cast-Steel Joint of Long-Span Reticulated Shells
WEIXing, LIJun, QIANG Shi-zhong
2004, 17(4): 428-432.
Abstract:
Through a full-scale experiment on the spherical cast-steel joint of reticulated shells of the Chongqing Olympic Stadium, stresses on the cast-steel joint were obtained. By combining the full-scale experimentwith a theoretical analysis, static behaviors of the cast-steel joint and the pathway of str...
Reason for Resulting in High Direct Shearing Strength and Improvement of Loading Uni
2004, 17(4): 433-436.
Abstract:
Direct and triaxial shearing tests were carried out for deuterogenic adamic earth, silty clay and completelyweathered mudstone, and the experimental results were analyzed. The result shows that shear strength of rock or soil, cohesive force and internal friction angle, obtained through a direct shea...
Simulation of Surface Crack Propagation in Asphalt Pavements and Analysis of Its influential Factors
MAO Cheng, QIUYan-jun, LI Yun-peng
2004, 17(4): 437-441.
Abstract:
By using the finite element method (FEM) based on theory of linear elastic fracture mechanics, stress intensity factor and crack initiation angle were calculated for surface cracks in asphalt concrete (AC) pavements with three different crack depths under five load cases. Top-down propagation path i...
Numerical Simulation of Unsteady Three-Dimensional Flow Induced by High-Speed Train Entering Tunnel with Shaft
LUOJian-jun, GAO Bo, WANG Ying-xue, ZHAO Wen-cheng
2004, 17(4): 442-446.
Abstract:
To decrease the effect of compression wave, the numerical simulation of a three-dimensional viscous flow induced by a high-speed train entering tunnels with a shaft was made. In the simulation, the Navier-Stokes equations, describing three-dimensional viscous, compressible, isentropic and nonstation...
Theoretical Investigation of Compression Wave Induced by High-Speed Train Entering Tunne
ZHAO Wen-cheng, GAO Bo, WANG Ying-xue, JUJua
2004, 17(4): 447-450.
Abstract:
The complex pressure field resulted from a high-speed train entering a tunnel was investigated based on the theory of aerodynamic sound. In light of actual conditions, the Ffowcs Williams-Hawkings (FW-H) equation was simplified to save calculation resource and calculation time. The Galilean transfor...
Railway Automatic Blocking Transmission Lines Fault Detection Model
HE Zheng-you, WANG Zhi-bing
2004, 17(4): 451-455.
Abstract:
The characteristic for short circuit and earth fault of 10 kV railway power transmission lines for automatic block systemswas analyzed, and a fault detection modelwas built. Simulation results showthat it is feasible to detect phase to phase short circuit and single phase earth fault and determine t...
Location and Speed Detection System for High-Speed Maglev Vehicle
GUOXiao-zhou, WANG Ying, WANG Shi-xiong
2004, 17(4): 455-459.
Abstract:
To detect the location and speed of high-speed maglev (magnetically levitated) vehicles, a location and speed detecting scheme was proposed. In this scheme, the tooth-and-slots of the LSM (linear synchronous motor) and the location reference leaves beside the track are detected as the relative and a...
Calculation of Induction Electromotive Force of Linear Generator of High-Speed Maglev Train
WULi-hong, ZHANGKun-lun, LUO Fan
2004, 17(4): 460-464.
Abstract:
To supply power for the appliances in high-speed EMS-maglev (electromagnetic suspension- magnetically levitated) vehicles, the position functions of self and mutual inductance in the linear generator were derived. The general formula for the electromotive force of the long stator linear generator an...
Dynamic Characteristics of Electromagnetic Levitation Systems
ZHAO Chun-fa, ZHAI Wan-min
2004, 17(4): 464-468.
Abstract:
The suspension stiffness and damping of an actively controlled electromagnetic suspension system were analyzed theoretically and numerically. The suspension unit consisting of single magnet and series suspension controller was taken as the object for analysis. The analytical results show that the su...
Dynamic Analysis of Swing Movable Teeth Driv
WANG Shu-ying, XULi-ju, LIANG Shang-ming
2004, 17(4): 472-475.
Abstract:
The forces on a single movable tooth were analyzed and the result was taken as the basis for calculating the forces acting on movable teeth of a single set and double sets. Deformation-coordination equations were derived using displacement method and kinetic-static analysis, and the equations were u...
Application of Meshless Method to Calculation of 2-D Elasticity Mechanics Problems
ZHAO Guang-ming, SONG Shun-cheng
2004, 17(4): 476-480.
Abstract:
The meshless local Petro-Galerkin method was applied to the calculation of two-dimensional elasticity mechanics problems by choosing properweight functions and basis functions. With the method, all integrals can be easily fulfilled on regular sub-domain boundaries, and to impose the essential bounda...
Improved Scheme of Channel Allocation of GSM/GPRS Networks
JIANGTi-gang
2004, 17(4): 481-484.
Abstract:
Based on the analyses of the typical channel allocation schemes such as FRA (fixed resource allocation) and DRA (dynamical resource allocation) for GSM/GPRS (global system for mobile communications/general packet radio service) networks, an improved channel allocation scheme, DMC_ DRA, was proposed,...
Modeling and Optimization of V2Controller for BUCK Converters
HEXiao-qiong, WUSong-rong, WANG Feng-yan
2004, 17(4): 485-489.
Abstract:
The models for BUCK converter and controlling loop were built using state-space average and linear methods and V2control technique, and the parameters for the compensative circuit in the controlling loopwere optimized based on optimal control theory. The simulation results showthat the transient spe...
Prediction of Chaotic Time Series Using Bilinear Adaptive Filter
ZHAOHai-quan, ZHANGJia-shu
2004, 17(4): 490-493.
Abstract:
Based on the delay-coordinate reconstruction and bilinear expressions in the phase space of a chaotic system, a bilinear adaptive filter was designed to predict low-dimensional chaotic time series. Experiments conducted on two examples of low-dimensional chaotic series show that, using the bilinear ...
Modification on TCP for Mobile Environments
ZHAO Chun-fen, FANGXu-ming
2004, 17(4): 494-497.
Abstract:
To improve the performances ofTCP (transfer control protocol) in mobile environments, an end- to-end solutionwas proposed based on ROMIPv4 (route optimization in mobile internet protocal version 4), which is named as TCP-BROMIPv4. In this solution, sender TCP may adjust its operation when it is swit...
Design of Optimal Incentive Payment Scheme for Enterprisers
GUO Yan, ZHANG Shi-ying, GUO Bin, LENG Yong-gang
2004, 17(4): 498-502.
Abstract:
An optimal incentive payment scheme was designed in order to prevent the problems of enterprisers adverse selection and moral hazard from occurring resulted from the absence of information on their real capability and their service cost and so forth. In this scheme, the revelation principle in the g...
Research on Residual Distribution Based on Substitute Cost of Participant Resources
LUO Yue-long, KUANGMo, YUZhi-ping
2004, 17(4): 503-507.
Abstract:
Based on the analysis of the theoretical shortcomings of enterprise surplus arrangement, the substitute cost of participant resources was proposed as the key factor determining the residual distribution proportion in orderto resolve the problemthatmarginal contribution and risk, as the standard of d...
Comparison Study on Value and Exercise Time of Options with Same Intrinsic Valu
FUShi-chang, XUYuan-dong
2004, 17(4): 507-510.
Abstract:
As an example, the values of continuous-dividend-paying call options and variable striking price options with the same intrinsic value at any time were respectively calculated by using the finite difference method. The research result shows that when the exercise price is variable, the typical concl...
Portfolio Optimization Model Based on Conditional Value-at-Risk
HUANGXiang-yang, CHENXue-hua, YANGHui-yao
2004, 17(4): 511-515.
Abstract:
Based on an algorithm proposed by R T Rockafeller and S Uryasev, a portfolio optimization model, mean-conditional value-at-risk model, was set up. This model measures riskwith conditional value- at-risk (CVaR) instead of standard deviation. It was optimized by using Matlab software and choosing six ...
Distributed Decision-Making Support System Based on Coordination among Functional Departments
SHANCheng-ge, XIONGJian-gen, GUO Yao-huang
2004, 17(4): 516-520.
Abstract:
To provide an effective decision-making support for the enterpriseswhose functional departments are decentralized, a general model to describe the coordination process among functional departments of an enterprise was established based on the coordination theory and the structure of a distributed de...
Collusion of Agents and Its Control under Asymmetric Information
HANJian-jun, GUO Yao-huang, LANMin
2004, 17(4): 521-524.
Abstract:
By applying the game theory and the information economics, the effects of collusion on the incentive mechanism from a principal under the conditions of multi-agent and asymmetric information were investigated. It was pointed out that if there is no collusion among agents, a principal may raise the i...
Nonparametric Frontiers Evaluation of Eigenvalue Attributes of Third-Party Logistics Provider
WANG Ying
2004, 17(4): 525-530.
Abstract:
To design an evaluation method for third-party logistics providers (3PLPs) , an evaluation system consisting of 15 classification criteria was proposed, and its each criterion was graded into 5 levels. Three steps are included in evaluatingthe third-party logistics providers (3PLPs). The first is to...
Partner Selection in Supply Chain Alliance Based on Genetic Algorithm
DAI Ying
2004, 17(4): 531-534.
Abstract:
On the basis of establishing the multi-objective decision-making model for partner selection, a self-adaptive genetic algorithmwas proposed to optimize partner selection in a supply chain alliance, and an example was given. In this genetic algorithm, each member in a supply chain alliance has a self...
Optimal Algorithm for Multi-period Inventory System with Quantity Discoun
WANG Qing-rong, LIXian-lin, WENJu
2004, 17(4): 535-539.
Abstract:
To optimize milti-period inventory systems, in which quantity discounts are available, demand rates change over time, and checking and replenishments are made periodically, an algorithmwas proposed to search control rules. In the algorithm, a search tree with roots of the cumulative demands in the c...
Initial Value Problem of Quasi-linear Hyperbolic Equations
ZHAZhong-wei
2004, 17(4): 540-543.
Abstract:
Based on theory of hyperbolic linear partial differential operator, the initial value problem of a kind of quasi-linear hyperbolic equations with non-zero initial values was introduced and studied. The Hilbert space and an important inequalitywere obtained using interior product of the Fourier trans...
Generalized Binomial Coefficient and Its Inversion
TANMing-sh
2004, 17(4): 544-546.
Abstract:
Then+1 order lowtriangular matrixPn[x]consisting of generalized binomial coefficients was studied with convolution formula and matrix multiplication. An inversion and some combinatorial identities related to the binomial coefficients were derived by using the properties ofPn[x].
On the Perturbation of Isometric Groups
2004, 17(4): 547-549.
Abstract:
LetAbe the infinitesimal generator of an isometric group on a Hilbert spaceHandBbe the perturbed operator ofA. Assume thatBis dissymmetrical and its relative boundary aboutAis smaller than one. Using perturbation theorems ofm-dissipative operation and self-adjoint operators, itwas proved thatA +Bis ...
Sustaining Degree of Fuzzy Triple I Method Based on Residual Implication
WANG Qiong, HE Yi-nong, SONG Zhen-min
2004, 17(4): 550-553.
Abstract:
The residual implication operatorwas derived using triangularmodule, and the triple I algorithm for the residual implication operator that applies under certain conditions was obtained according to the properties of triangular module and the residual implication operator. The properties of the susta...
Experimental Investigation on Stress Relief Treatment with Pedrail-Type Heater
LIXiao-gang, YAO Wei-wei, WANGJia-kai, ZHANG Ze-hao
2004, 17(4): 554-556.
Abstract:
The distribution of temperature in a steel plate heated by pedrail-type heaterswas measured and the distributions of welding residual stresses as welded and after stress relief were investigated with hole- drilling strain-gauge method. The results show that, the temperature gradient along the thickn...
Influences of Morphology and Size of Precursor on Nano-ZnO
CHENChuan-zhi, ZHOUZuo-wan
2004, 17(4): 557-560.
Abstract:
Nano-ZnO powders with diameters of 8 to 130 nm were prepared from zinc nitrate and urea by homogeneous precipitation method. The precursors in different sizes and with rod-like or lamellar shapes were obtained by controlling the reaction procedures. Then, nano-ZnOof different sizes andwith spherical...
Combination Prediction of Traffic-Volume in Intersections Based on Wavelet Analysis and Kalman Filter
LI Cun-jun, YANG Ru-gui, DENGHong-xia
2004, 17(4): 577-580.
Abstract:
Based on the analysis of the distribution characteristics of urban traffic-volume, a combination prediction method based on wavelet analysis and Kalman filter was proposed to obtain more precise information on traffic-volume in intersections. With this method, some correlative data serials from an i...