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DECISION OF SELECTION ABOUT COMPUTER SYSTEM AND ITS VENDOR

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Journal of China Textile University(English Edition) 1993年第1期10卷 58-63页

作者：归瑶琼 dept.of Management Engineering

The purpose of this article is to help small business persons who are in the market formicro-computers to select and use the specific product or service that will most effectively satisfytheir *** study is the development of a structure of representing system attributes in a formsuitable for a manageable decision *** study uses“Descriptor”software package as a tooland uses the decision model of selecting a computer system and its vendor for an organization(buyer)to exemplify the application of“Descriptor”in decision processing.

关键词： decision selection computer systems vendor descriptor small business

AN INVESTIGATION OF THE RELATION BETWEEN COTTON FIBRE PROPERTIES AND YARN QUALITY BY USING HIGH VOLUME INSTRUMENT(HVI)SYSTEM

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Journal of China Textile University(English Edition) 1993年第2期10卷 7-13页

作者： M.A.Zaman 储才元严灏景 dept.of Textile Engineering

The objective of this paper is to establish reliable prediction equations relating cotton fibreproperties measured by HVI system and yarn quality,A useful statistical method is adopted for de-veloping a multiple regression model interpreting the relation between the data of Spinlab HVIfibre properties and quality parameters of yarn STQ (Strength Tex Quotient).The percent relativecontribution of a fibre property with respect of STQ is also *** results show that the totalcontribution of the HVI measured fibre properties can account for 77.4% of known variation ofyarn *** main feature of the approach is its flexibility in accommodating all fibre *** examination of regression equation showed that it could be well applied to predict STQ ofyarns spun from the same spinning system,but,for different spinning systems and also for yarns ofdifferent linear density,modification of the equation would be needed.

关键词： regression analysis correlations cotton fibres fibre properties cotton yarn yarn properties ring spinning High Volume Instrument

PROBLEM-ORIENTED INFORMATION RETRIEVAL DECISION SUPPORT SYSTEMS

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Journal of China Textile University(English Edition) 1993年第1期10卷 51-57页

作者：张念 dept.of Management Engincering

Decision Support Systems(DSS)are man-machine interaction systems,which support the de-cision-makers to solve the unstructured and semi-structured decisions,this paper advances that thefunction of problem-oriented information retrieval DSS can meet the needs of enterprise’s topmanagement effectively in comparison with other information retrieval functions,in accordancewith the features of supporting information for *** architecture of this system is presented,which dissolves a problem put forward or recognized by the user into the problem recognized by thecomputer,forming retrieval tactics and searching the data the user *** and developedaccording to the architecture of this system,a prototype system is introduced,which is CF Econom-ic Environment Information Retrieval DSS.

关键词： artificial intelligence computer application management information system system architecture decision support systems(DSS) information retrieval data-oriented problemoriented

2D spiral pattern recognition based on neural network covering algorithm

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Journal of Harbin Institute of Technology(New Series) 2007年第3期14卷 330-333页

作者：黄国宏熊志化邵惠鹤 dept.of Information Guangdong University of Technology dept.of Automation Shanghai Jiaotong University

The main aim for a 2D spiral recognition algorithm is to learn to discriminate between data distributed on two distinct strands in the x-y *** problem is of critical importance since it incorporates temporal characteristics often found in real-time *** work with this benchmark has witnessed poor results with statistical methods such as discriminant analysis and tedious procedures for better results with neural *** paper presents a max-density covering learning algorithm based on constructive neural networks which is efficient in terms of the recognition rate and the speed of *** results show that it is possible to solve the spiral problem instantaneously(up to 100% correct classification on the test set).

关键词： pattern recognition neural networks max-density covering learning 2D spiral data

CONSTRUCTION OF RECTANGULAR DISPLACEMENT-BASED ELEMENT FOR THICK/THIN PLATES

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Acta Mechanica Sinica 1993年第2期9卷 163-170页

作者：卜小明龙驭球 dept.of Mechanics Tianjin UniversityTianjin 300072China dept.of Civil Engineering Tsinghua UniversitvBeijing 100084China

In this paper,a method of constructing displacement-based elment for thick/thin plates is devel- oped by using the technique of generalized compatibility,and a rectangular displacement-based element with 12 degrees of freedom for thick/thin plates is *** method enjoys a good accuracy with simple formulation and is free of shear- locking as the thickness of the plate approaches zero.

关键词： thick plate thin plate generalized compatibility finite element

Virtual test system for permanent-magnet DC motor

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Journal of Harbin Institute of Technology(New Series) 2003年第2期10卷 200-204页

作者：崔淑梅王悦柴凤吴红星刘宝廷程树康 dept.of Electric Engineering

In order to obtain the primary parameters and operating characteristics of a DC motor without directly measuring its torque and rational speed, it is proposed to use a PC and a data acquisition card to acquire both the dynamic and static data of armature current to establish the performance of a DC permanent magnet motor. The accuracy and validity of this virtual test system proposed were verified by comparing the measurements made with the system proposed with the measurements made with conventional torque meters. It is concluded from the results of comparison that from the mathematic model established for the DC permant magnet motors, both major parameters and operating characteristics can be directly established for the DC motors without measuring their torques and rotational speed, a perfect on line measurement and test system has been established for the DC permanent magnet motors using the theory of virtual test system. The system proposed features shorter test time, higher efficiency and lower cost.

关键词： virtual system motor test parameter identify

EXPERIMENTAL INVESTIGATION INTO PLASTIC DAMAGE OF MICROVOIDS WITH INTERACTION

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Acta Mechanica Sinica 1997年第3期13卷 280-288页

作者：方竞倪受庸杨宏伟白树林戴福隆 dept.of Mechanics & Engng.Science Peking UniversityBeijing 100871China dept.of Engng.Mechanics Tsinghua UniversityBeijing 100084China

A mechanism of plastic how localization in ductile matter near microvoids is studied. The voids with the size-scale of micromillimeter exist in sheet specimens under tensile loading, and the plastic strain held around voids is obtained by digital image processing of deformed grids. The size growth of the microvoids, the spacing change of the neighboring voids, and the development of shear bands in the ligament between the voids, are presented by experimental results accompanied with the plastic strain distribution, that gives good interpretation to the process of void growth and coalescence with the how localization in the ligaments.

关键词： void damage flow localization plastic strain field void interaction

Survivability analysis of wireless Ad hoc network using stochastic reward nets

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Journal of Harbin Institute of Technology(New Series) 2008年第4期15卷 535-539页

作者：赵靖崔刚刘宏伟王慧强 dept.of Computer Harbin Engineering University dept.of Computer Harbin Institute of Technology

To provide services in presence of failures or attacks in a timely manner, the network survivability was analyzed. Based on stochastic Petri nets, we put forward an effective model for ad hoe network and adopt a two-phase approach consisting of the steady-state availability analysis and the system transient performance analysis, then provide a quantitative approach for analysis of the network survivability. The results show that the proposed model is useful for the design and evaluation of the wireless ad hoc network.

关键词： survivability availability ad hoc network stochastic Petri nets

A UNIFIED ENERGY APPROACH TO A CLASS OF MICROMECHANICS MODELS FOR COMPOSITE MATERIALS

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Acta Mechanica Sinica 1995年第1期11卷 59-75页

作者：黄永刚黄克智胡凯雄 A.Chandra dept.of Aerospace and Mech.Eng. The University of ArizonaTucsonAZ 85721USA dept.of Engineering Mechanics Tsinghua UniversityBeijing 100084China

Several micromechanics models for the determination of composite moduli are investigated in this paper,including the dilute solution,self-consistent method,generalized self-consistent method,and Mori-Tanaka's *** mi- cromechanical models have been developed by following quite different approaches and physical *** is shown that all the micromechanics models share a common ground,the generalized Budiansky's energy-equivalence *** dif- ference among the various models is shown to be the way in which the average strain of the inclusion phase is *** a bonus of this theoretical development,the asymmetry suffered in Mori-Tanaka's method can be circumvented and the applica- bility of the generalized self-consistent method can be extended to materials contain- ing microcracks,multiphase inclusions,non-spherical inclusions,or non-cylindrical *** relevance to the differential method,double-inclusion model,and Hashin-Shtrikman bounds is also *** application of these micromechanics models to particulate-reinforced composites and microcracked solids is reviewed and some new results are presented.

关键词： micromechanics models energy-equivalence framework dilute solution self-consistent method generalized self-consistent method Mori-Tanaka's method