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Journal of Thermal Science 1999年第1期8卷 44-50页

作者： Yang Du (Department of Oil Mechanical engineering, logistical engineering university,chongqing 400016,china) Ming Dao Xin(Institute of engineering Thermophysics, chongqing university, chongqing 400044, china) Department of Oil Mechanical engineering Logistical Engineering University Chongqing China Institute of engineering Thermophysics Chongqing University Chongqing China

This paper developed a new type of three dimensional inner microfin tube. The experimental results of the flow patterns for the horizontal condensation inside these tubes are reported in the paper. The flow patterns for the horizontal condensation inside the new made tubes are divided into annular flow, stratified flow and intermittent flow within the test conditions. The experiments of the local heat transfer coefficients for the different flow patterns have been systematically carried out. The experiments of the local heat transfer coefficients changing with the vapor dryness fraction have also been carried out. As compared with the heat transfer coefficients of the two dimensional inner microfin tubes, those of the three dimensional inner microfin tubes increase 47-127% for the annular flow region, 38-183% for the stratified flow and 15-75% for the intermittent flow, respectively. The enhancement factor of the local heat transfer coefficients is from 1.8-6.9 for the vapor dryness fraction from 0.05 to 1.

关键词： heat transfer coefficients heat transfer enhancement horizontal condensation three dimensional inner microfin tube two-phase flow patterns.

Protein Secondary Structure Prediction Using Dynamic Programming

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Acta Biochimica et Biophysica Sinica 2005年第3期37卷 167-172页

作者： Jing ZHAO Pei-Ming SONG Qing FANG Jian-Hua LUO School of Life Science & Technology,Shanghai Jiaotong university,Shanghai 200240,china Shanghai Center for Bioinformation and Technology,Shanghai 200235,china logistical engineering university,chongqing 400016,china School of Life Science & Technology Shanghai Jiaotong UniversityShanghai 200240 China Shanghai Center for Bioinformation and TechnologyShanghai 200235 China logistical engineering universitychongqing 400016 China

In the present paper,we describe how a directed graph was constructed and then searched forthe optimum path using a dynamic programming approach,based on the secondary structure propensity ofthe protein short sequence derived from a training data *** protein secondary structure was thus pre-dicted in this *** average three-state accuracy of the algorithm used was 76.70%.

关键词： directed graph dynamic programming approach protein secondary structure

Recognition of Gene Acceptor Site Based on Multi-objective Optimization

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Acta Biochimica et Biophysica Sinica 2005年第7期37卷 435-439页

作者： Jing ZHAO~(1,3,4) Yue-Min ZHU~2 Pei-Ming SONG~1 Qing FANG~1 Jian-Hua LUO~(1,3) 1 School of Life Science & Technology,Shanghai Jiaotong university,Shanghai 200240,china 2 CREATIS,CNRS UMR 5515,INSA Lyon,69621 Villeurbanne Cedex,France 3 Shanghai Center for Bioinformation and Technology,Shanghai 200235,china 4 logistical engineering university,chongqing 400016,china School of Life Science & Technology Shanghai Jiaotong UniversityShanghai 200240 China Shanghai Center for Bioinformation and TechnologyShanghai 200235 China logistical engineering universitychongqing 400016 China CREATIS CNRS UMR 5515 INSA Lyon69621 Villeurbanne Cedex France

A new method for predicting the gene acceptor site based on multi-objective optimization isintroduced in this *** models for the acceptor,branch and distance between acceptor site andbranch site were constructed according to the characteristics of the sequences from the exon-intron databaseand using common biological *** acceptor function,branch function and distance functionwere defined respectively,and the multi-objective optimization model was constructed to recognize thesplice *** test results show that the algorithm used in this study performs better than the SplicePredictor,which is one of the leading acceptor site detectors.

关键词： multi-objective optimization acceptor site recognition

Design and Research of the EQ6105DTAA Diesel Engine

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厦门大学学报（自然科学版） 2002年第S1期41卷 225-226页

作者： CHEN Xu 1, CHEN Yong-guang 2, WU Hong-liang 3, RAN Ru- li 3 (1. Mechanical engineering Institute, chongqing Univ. Chongq ing 400044, china 2. logistical engineering university, chongqing 400016, china 3. Dongfeng Research Institute of Automobile engineering)

The EQ6105DTAA diesel engine which first pattern en gi ne is EQD6105T is developed through the original EQ6102 diesel engine and other advanced engine structures. This paper analyses performance parameters, general layout and parts design process of the diesel engine. The development cycle is s horten by CAD/CAE/CAM technology. Through experiment, the general performance of the engine is in keeping ahead in our country. With boosting mid-cooling technology and related designing correction in EQ6105 DTAA diesel engine, it had obtained better motivity and economy. The full load s teady smog emission and smog emission during simulated free accelerating are all meeting with GB14761.6-93, GB3847-1999 limit requirement. The prototype had p assed reliability test and has reliable parts. It performance indexes are in the leading position in same diesel engine in china. The 13 working conditions gas pollute and particle discharging in this pro totype can meet the limit requirement of GB17691-2001, phase I. The EQ6105DTAA diesel engine parts has good generality with existing types, which lower down th e production cost.

关键词： diesel engine design performance experiment

On-line tribochemical strengthening of gear surface

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Science china Mathematics 2001年第S1期44卷 273-280页

作者： CHEN Guoxu CHEN Boshui JIANG Song LI Xiaotao CHEN Ligong logistical engineering university, chongqing 400016, china Logist Engn Univ Chongqing 400016 Peoples R China

It has been found that under favorable friction conditions some antiwear elements inlubricating additives can permeate into subsurface of metal which can strengthens the friction sur-faces and improves anti-wear capacity of frication pairs. It is in many ways similar to chemical heattreatment. A new concept, technology of on-line strengthening, was logically put forward. Based oncurrent gear surface treatment technology, the on-line strengthen of gear surface is proposed. Itsdesign method is established. Based on it, the on-line strengthen of gear is achieved on CL-100gear test machine. A new method is put forward for strengthen treatment of gear surface. Andthree kinds of surface film were suggested.

关键词： on-line strengthening tribodiffusion gear transmission

Digital Signal Processing Method of Coriolis Mass Flowmeter

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Digital Signal Processing Method of Coriolis Mass Flowmeter

基于范例推理的后勤非对抗性仿真作业系统研究

第一届国际测量仪器与测试自动化学术会议

作者： Zhang Haitao Tu Yaqing Niu Penghui (logistical engineering university. chongqing 400016 china)

＜正＞For the contribution of negative frequency is neglected in the algorithm, there is a long convergence stage of using the sliding Goertzel algorithm to measure the phase difference between signals of Coriolis mass flowmeter. A new signal processing method for Coriolis mass flowmeler is proposed based on the recursive DTFT algorithm with the contribution of negative frequency considered. First, an adaptive lattice notch filter is applied to filter the sensor output signals of Coriolis mass flowmeter and calculate the frequency. Then a method with negative frequency contribution based on the recursive DTFT algorithm is introduced to calculate the real-time phase difference between two enhanced signals. With the frequency and the phase difference obtained, the time interval of two signals is calculated and then the mass flow rate is derived. Simulation results show that the stage of convergence of phase difference and time interval calculation has been largely shortened by the new method. So the method is proved to be effective.

关键词： Coriolis mass flowmeter negative frequency recursive DTFT algorithm phase difference calculation time interval.

来源： cnki会议评论

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系统仿真学报 2004年第11期16卷 2425-2427页

作者：张剑芳李中学后勤工程学院自动化工程系重庆400016

在介绍基于范例推理方法基本原理的基础之上,分析了基于范例推理的后勤仿真作业系统的框架结构和工作原理;探索了应用范例推理方法实现后勤仿真作业系统的技术框架,仿真作业系统中对范例检索采用最相邻近策略,将范例属性采用对称二维表... 详细信息

在介绍基于范例推理方法基本原理的基础之上,分析了基于范例推理的后勤仿真作业系统的框架结构和工作原理;探索了应用范例推理方法实现后勤仿真作业系统的技术框架,仿真作业系统中对范例检索采用最相邻近策略,将范例属性采用对称二维表结构方式存储,对范例特征的影响程度依次检索。说明了仿真作业系统的学习机制,范例库学习中采用的多范例集成机制。

关键词：范例推理后勤仿真系统保障方案

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重庆山区矸石山降雨入渗特性及其稳定性研究

土木工程学报 2009年第7期42卷 85-89页

作者：臧亚君刘东燕蒋克锋重庆工商大学重庆400067 重庆大学重庆400044 中国人民解放军后勤工程学院重庆400016

降雨是导致重庆山区矸石山失稳的主要诱发因素,针对重庆山区矸石山,分析其降雨入渗过程及其影响因素,以Navier-Stocks方程为基础,按照流体动力学原理,应用C语言编制了二维平面内矸石山降雨入渗的数值模拟程序,计算降雨入渗过程中水分在... 详细信息

降雨是导致重庆山区矸石山失稳的主要诱发因素,针对重庆山区矸石山,分析其降雨入渗过程及其影响因素,以Navier-Stocks方程为基础,按照流体动力学原理,应用C语言编制了二维平面内矸石山降雨入渗的数值模拟程序,计算降雨入渗过程中水分在矸石山内的运移规律,并由此计算矸石散体中的孔隙水压力变化;其次,采用FLAC2D两相流渗流分析模块进行矸石山降雨入渗数值模拟,充分考虑水气两相流动,并选择与应力耦合的算法;最后,将非饱和土中的相关理论引入,考虑基质吸力对矸石散体强度的影响,采用极限分析方法分析矸石山体在降雨各阶段的安全储备,并且采用FLAC2D对降雨情况下重庆山区矸石山的应力-应变状态进行计算,矸石散体的应力-应变模式采用非线性模拟,得出的计算结果与极限分析的计算结果一致。

关键词：矸石山降雨入渗基质吸力稳定性

The Computer Aided Integrated Design and Analysis of Oil Tank in Vehicle

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厦门大学学报（自然科学版） 2002年第S1期41卷 269-页

作者： CHEN Xu 1, CHEN Yong-guang 2 (1. Mechanical engineering Institute, chongqing university, chongqing 400044, china 2. logistical engineering university, chongqing 400016, china)

This paper creates 3D solid model and assembly of U RJ 92-6 oil tank and analyses its strength by integrated CAD/CAE/CAM software I-D EAS. Through integrated simulation in computer, design efficiency and quality of oil tank is greatly improved. Adopting integrated CAD/CAE/CAM software to carry out integrated research to equ ipment and products, we will be able to take overall analysis in aspects of 3-D solid modeling, pre-assembly and strength, etc., to realize non-paper designi ng and parallel designing. Problems can be found and settled during designing, w hich will increase designing efficiency and one-time success rate and realize o ptimum designing for products.

关键词： oil tank solid modeling finite element analysis integrated design

SIR-Based Oil Tanks Leak Detection Method

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SIR-Based Oil Tanks Leak Detection Method