西南交通大学学报

WU Zhenye, SONG Tiansheng, ZHAO Ke

2006, 19(3): 269-272.

[Abstract](1503)

Abstract:
The characteristic of container routing problem was analyzed.A stochastic programming model was established for selection of container shipping routes,and in the model uncertainty in container demands was taken into consideration.The maximum profit of transportation was taken as target function,and ...

Self-Adaptive Genetic Algorithm for Locomotive Diagram

HE Fengdao, LIANG Xiangyang, HE Dongyun

2006, 19(3): 273-278.

[Abstract](1685)

Abstract:
A mathematical model for a locomotive diagram of a train diagram with paired and non-paired trains was presented,and the optimized schedule was obtained with a genetic algorithm.The abilities of local search,convergence and optimization were raised with a two-point crossover operator and a knowledge...

Effect of Air Turbulence on Airplane Turbulence

WANG Yongzhong

2006, 19(3): 279-283.

[Abstract](1528)

Abstract:
Equations with 6-degree-of-freedom motion were used to study the effect of air turbulence on vertical overload of an airplane.The transfer function of overload as the airplane flying in turbulence was deduced,and the airplane response to non-stationary air turbulence was analyzed.The results show th...

Comprehensive Evaluation of Urban Rail Transit Network Planning Based on Green Transportation Principle

DU Shengpin, XIONG Ling, DING Weidong

2006, 19(3): 284-289.

[Abstract](1735)

Abstract:
To select the best urban rail transit network plan among the available ones,a comprehensive evaluation system was proposed based on the green transportation principle.An optimization algorithm for comprehensive weights was presented using analytic hierarchy process(AHP).The comprehensive weights wer...

Model and Algorithm for Vehicle Routing Problem with Backhauls and Time Windows

YIN Chuanzhong, BU Lei, PU Yun, ZHAO Yi

2006, 19(3): 290-295.

[Abstract](1634)

Abstract:
The characteristic of vehicle routing problem with backhauls and time windows was analyzed.An optimization model was proposed.The problem was simplified by setting a virtual collecting depot,from which the distance to the consignment depot is zero.To solve the model,an improved genetic algorithm was...

Critical Effect of Decision Making for Logistics Outsourcing of Manufacturing Enterprises

SHUAI Bin, SUN Chaoyuan

2006, 19(3): 296-299.

[Abstract](1380)

Abstract:
There is a critical point,where the profit of a manufacturing enterprise increases or decreases dramatically,in the course of logistics outsourcing of the enterprise.The critical effect was described with a "white box" model of system theory.The input factors include total cost of logistics outsourc...

Spillover Effect and Determination of Innovation Time for Industrial Cluster

JIA Mingjiang, LIN Xiang

2006, 19(3): 300-304.

[Abstract](1249)

Abstract:
To understand the effect of technology spillover on innovation time for an industrial cluster,a spillover coefficient was added to the probability function of time for an innovation to succeed and to the linear function describing the correlation between innovation time and investment.An expected ne...

Power Quadrilateral,Current Quadrilateral,Admittance Quadrilateral and Their Application

CAO Yuquan, BAI Lili, LI Mengda, YAN Weizhong

2006, 19(3): 305-309.

[Abstract](1427)

Abstract:
To solve problems that can not be solved using the power triangle,such as determining electric parameters in non-sinusoidal alternating-current circuits with harmonic currents,the power quadrilateral was proposed.A power quadrilateral consists of apparent power S,active power P,reactive power Q,and ...

Thermal Shutdown Circuit with Low Voltage and Low Power Consumption for Power Management IC

LIU Zhenfeng, FENG Quanyuan

2006, 19(3): 310-313.

[Abstract](1462)

Abstract:
A thermal shutdown circuit with low voltage and low power consumption was designed for power management ICs(integrated circuits).In the thermal shutdown circuit,the PN junction of a transistor was used as a temperature probe,where the switch-on voltage rises,and the variation of the switch-on voltag...

Offline E-cash System with Finite Circulation Period Based on Elliptic Curve

LU Rongbo, SU Hangli, HE Dake, MIAO Xianghua

2006, 19(3): 314-318.

[Abstract](1773)

Abstract:
To prevent e-cash from double-spending and unlimited increase in the records of databases,an improved offline e-cash system based on elliptic curve cryptography was proposed.The improved system utilizes good properties of elliptic curve cryptography system and adopts zero knowledge proof.Partial bli...

Construction of Sequences with Zero Correlation Zone Based on Interleaved Technique

WANG Longye, TANG Xiaohu

2006, 19(3): 319-323,340.

[Abstract](1292)

Abstract:
Interleaved technique was used to construct a zero correlation zone(ZCZ),and a new method was proposed to design sequences with ZCZ.For a given perfect sequence a of a period L and an orthogonal matrix,a new sequence b is generated by interleaving the sequence a first,then a new ZCZ sequence set is ...

Knowledge Discovery and Model Structure Selection Based on Rough Set Theory

ZENG Chuanhua, XU Yang, DU Yajun, XIE Weicheng

2006, 19(3): 324-328.

[Abstract](1577)

Abstract:
To select a proper decision model in intelligent decision,a method to acquire the knowledge of model selection and select a decision model by utilizing the knowledge was proposed based on the rough set theory.With this method,the decision table of models with continuous attribute values is acquired ...

Algorithm for Visualization of Classification Results of Two-Category Data

WANG Xiaohong, WANG Xiaoru, LI Qunzhan

2006, 19(3): 329-334.

[Abstract](1607)

Abstract:
A new algorithm called support vector visualization(SVV) was proposed for visualization of classification results of two-category data to meet the need in some applications.The SVV algorithm is based on support vector machine(SVM) and self-organizing mapping(SOM).The result of SVV is a 2D map to vis...

Document Classification by Semi-supervised Online Learning Based on ART

XU Min, ZHANG Liping, ZHU Wujia

2006, 19(3): 335-340.

[Abstract](1474)

Abstract:
A semi-supervised learning system was proposed based on ART(adaptive resonance theory).It overcomes the limitation in the assumption in other semi-supervised learning algorithms that probabilistic distribution of data is known,and has the strong ability of learning new patterns and correcting errors...

Max-Product Fuzzy Context-Free Grammar and Pushdown Automaton

XIE Yuemei, TIAN Liping, WAN Huifang

2006, 19(3): 341-343.

[Abstract](1275)

Abstract:
To extend the application fields of the present research,the concept of max-product fuzzy pushdown automaton was given on the basis of the study of max-product fuzzy grammars and automata,and the relationships between a max-product fuzzy context-free grammar and a max-product fuzzy pushdown automato...

Accuracy Analysis of Linear-Resection and Its Application in Control Measurement of Sutong Bridge

ZHOU Xizhen, YIN Renxiang

2006, 19(3): 344-348.

[Abstract](1275)

Abstract:
The calculation of coordinates and the accuracy analysis for two-point linearresection were conducted by taking the Sutong bridge as the research object,and the formation of two points were discussed.Furthermore,the coordinates and positional accuracy of three-or more-point linear-resection were cal...

Dynamic Loading Test of Railway Long-Span Continuous Beam Bridge with High Piers

SHI Zhou, XIA Zhaoguang, GE Yumei

2006, 19(3): 349-354.

[Abstract](1645)

Abstract:
In order to inspect the actual dynamic responses of a bridge structure,dynamic loading tests were carried out on the Songtoujiang bridge,a railway continuous beam bridge with a main span of 100 m and a pier of 99 m in high.The natural vibration and dynamic responses of this bridge structure were tes...

Singular Perturbation Method for Solving Non-linear Vibration of Inclined Cables

RAN Zhihong, LI Qiao

2006, 19(3): 355-359.

[Abstract](1683)

Abstract:
To solve the difficult in the calculation of cable vibration,a non-linear dynamic model for inclined cables was set up by taking the geometrical non-linearity into account.The equation was solved using the singular perturbation method,and the analytical expressions of frequency and form function wer...

Experimental Research and Theoretical Analysis of Working Performance of Steel-Concrete Composite Deck

ZHAN Yulin, ZHAO Renda, MAO Xueming, MOU Tingmin, FAN Bikun

2006, 19(3): 360-365.

[Abstract](1531)

Abstract:
An experiment was conducted on a simply supported steel-concrete composite deck to investigate the working performance of steel-concrete composite decks.The behavior of a perfobond strip shear connector and the reinforcement effect of steel fiber on concrete were investigated.Based on the experiment...

Fuzzy Comprehensive Evaluation of Durability of Existing Reinforced Concrete Arch Bridges

LI Zhenxin, GUO Fengzhe, QIAN Yongjiu

2006, 19(3): 366-370.

[Abstract](1695)

Abstract:
To reasonably evaluate the durability of existing reinforced concrete arch bridges the fuzzy mathematics was applied due to its complicated influencing factors. With this method,a reinforced concrete arch bridge is divided into the two layer levels of members and structures,and the corresponding mem...

Fatigue Test of Connection between Floor Beams and Monolithic Joints

LI Jun, LI Xiaozhen, REN Weiping, QIANG Shizhong

2006, 19(3): 371-375.

[Abstract](1759)

Abstract:
The full-scale fatigue test of connection structure details between floor beams and monolithic joints was carried out on the Caiyuanba Yangtze River bridge in Chongqing.Based on a finite element analysis,the test joints were selected,and the maximum and minimum fatigue loads were determined to be 66...

3-D Elasto-plastic Numerical Simulation of Evolving Regularity of Structural Internal Force of Overlapped Tunnels

ZHENG Yuchao, QIU Wenge

2006, 19(3): 376-380.

[Abstract](1596)

Abstract:
To investigate the evolving regularity of structural internal force governed by tunneling of overlapped tunnels,3-D elastic-plastic numerical simulations were conducted on two overlapped tunnels in Laojie-Dajuyuan section of the Shenzhen metro.Two construction schemes,i.e.,up-to-down or down-to-up t...

Fatigue Strength of Bogie Frame of High-Speed Train under Spectrum Load

MI Caiying, LI Fu

2006, 19(3): 381-385.

[Abstract](1761)

Abstract:
To forecast fatigue strength or fatigue life of the bogie frame of a high-speed train effectively,a method for fatigue strength forecasting based on tested spectrum loads was proposed.First,with this method,test loads and their cycle numbers for fatigue strength of the bogie frame based on the crite...

Criteria for Stability of Linear Neutral Delay Systems

ZHANG Keyue, YANG Suqin

2006, 19(3): 386-390.

[Abstract](1568)

Abstract:
The asymptotic stability of linear neutral delay systems was studied with an eigenfunction approach based on a frequency domain.New stability criteria,which are of delay-independent algebraic criteria,were derived by taking into consideration of the structural information of the coefficient matrices...

Time-Dependent Cyclic Behavior of Stainless Steel under Multiaxial Loading at Room Temperature

SHI Zhi, GAO Qing, KANG Guozheng, SUN Yafang

2006, 19(3): 391-395.

[Abstract](1380)

Abstract:
The time-dependent cyclic straining characteristic and ratcheting behavior of 1Cr18Ni9 stainless steel were investigated experimentally under non-proportional multiaxial cyclic loading at room temperature to research its dependence upon straining rate,stressing rate and loading paths.The results sho...

Period-Doubling Bifurcations of Period Motion of Two-Degree-of-Freedom Manipulators

ZHENG Xiaowu

2006, 19(3): 396-399.

[Abstract](1465)

Abstract:
To investigate the dynamic stability of a two-degree-of-freedom manipulator as a system,differential equations of motion for this system were established on the basis of the Lagrange equation,and perturbed differential equations with period coefficients were derived for the period motion of this sys...

Smoothly Blending of Three Quadratic Algebraic Surfaces along Planar Sections

YU Kai, XUE Changhong

2006, 19(3): 400-403.

[Abstract](1158)

Abstract:
To expand the suitable conditions of the present blending methods,the problem of blending three quadratic algebraic surfaces along planar sections was transformed into a problem of ascertaining the existence of nonzero solution of homogeneous linear equations corresponding to these three quadratic a...

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2006 Vol. 19, No. 3