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Extension of TOPSIS for fuzzy multi-attribute decision making problem based on experimental analysis

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Journal of Systems Engineering and Electronics 2010年第3期21卷 416-422页

作者： min tian Yuanyuan He Sifeng Liu College of Economics and Management Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China

This paper is concerned with a technique for order performance by similarity to ideal solution（TOPSIS） method for fuzzy multi-attribute decision making,in which the information about attribute weights is partly known and the attribute values take form of triangular fuzzy *** the fact that the triangular fuzzy TOPSIS results yielded by different distance measures are different from others,a comparative analysis of triangular fuzzy TOPSIS ranking from each distance measure is illustrated with discussion on standard *** applying the most reasonable distance,the deviation degrees between attribute values are measured.A linear programming model based on the maximal deviation of weighted attribute values is established to obtain the attribute ***,alternatives are ranked by using TOPSIS ***,a numerical example is given to show the feasibility and effectiveness of the method.

关键词： fuzzy multi-attribute decision making technique for order performance by similarity to ideal solution(TOPSIS) method triangular fuzzy number distance measure.

NEW CONSERVATION LAWS OF ENERGY AND C-D INEQUALITIES IN CONTINUA WITHOUT MICROSTRUCTURE

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Applied Mathematics and Mechanics(English Edition) 2001年第2期22卷 127-134页

作者： DAI tian-min(戴天民) Center for the Application of Mathematics and Department of Mathematics Liaoning University Shenyang 110036 P R ChinaPaper from DAI Tian-min Member of Editorial Committee AMM

Fundamental laws and balance equations as well as C-D inequalities in continuum mechanics are carefully restudied, incompleteness of existing balance laws of angular momentum and conservation laws of energy as well as C-D inequalities are pointed out, and finally new and more general conservation laws of energy and corresponding balance equations of energy as well as C-D inequalities in local and nonlocal asymmetric continua are presented.

关键词： local asymmetric nonlocal asymmetric continuum mechanics conservation laws of energy balance equations of energy C-D inequalities

NEW PRINCIPLES OF WORK AND ENERGY AS WELLAS POWER AND ENERGY RATE FORCONTINUUM FIELD THEORIES

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Applied Mathematics and Mechanics(English Edition) 2001年第11期22卷 1231-1239页

作者： DAI tian-min(戴天民) Center for the Application of Mathematics and Department of Mathematics Liaoning University Shenyang 110036 P R China

New principles of work and energy as well as power and energy rate with cross terms for polar and nonlocal polar continuum field theories were presented and from them all corresponding equations of motion and boundary conditions as well as complete equations of energy and energy rate with the help of generalized Piola's theorems were naturally derived in all and without any additional requirement. Finally, some new balance laws of energy and energy rate for generalized continuum mechanics were established. The new principles of work and energy as well as power and energy rate with cross terms presented in this paper are believed to be new and they have corrected the incompleteness of all existing corresponding principles and laws without cross terms in literatures of generalized continuum field theories.

关键词： new principles of work and energy power and energy rate generalized Piola's theorem new equations of energy and energy rate generalized continua

NEW CONSERVATION LAWS OF ENERGY AND C-D INEQUALITIES IN CONTINUA WITH MICROSTRUCTURE

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Applied Mathematics and Mechanics(English Edition) 2001年第2期22卷 135-143页

作者： DAI tian-min(戴天民) Center for the Application of Mathematics & Department of Mathematics Liaoning University Shenyang 110036 P R China

Existing fundamental laws, balance equations and Clausius-Duhem inequalities in continua with microstructure are systematically restudied, and the incomplete formulations of conservation laws of energy and related C-D inequalities are pointed out. Some remarks on existing results are made, and new conservation laws of energy and related C-D inequalities are presented.

关键词： continua with microstructure new conservation laws of energy new C-D inequalities

NEW PRINCIPLES OF POWER AND ENERGY RATE OF INCREMENTAL RATE TYPE FOR GENERALIZED CONTINUUM FIELD THEORIES

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Applied Mathematics and Mechanics(English Edition) 2001年第12期22卷 1383-1389页

作者： DAI tian-min(戴天民) Center for the Application of Mathematics and Depertment of Mathematics Liaoning University Shenyang 110036 P R China

The aim of this paper is to establish new principles of power and energy rate of incremental type in generalized continuum mechanics BY combining new principles of virtual velocity and virtual angular velocity as well as of virtual stress anti virtual couple stress with c ross terms of incremental rate type a new principle of power anti energy rate of incremental rate type with cross terms for micropolar continuum field theories is presented and from it all corresponding equations of motion and boundary conditions as well as power and energy rate equations of incremental rate type for micropolar and nonlocal micropolar continua with the help of generalized Piola's theorems in all and without any additional requirement are derived. Complete results for micromorphic continua could be similarly derived. The derived results in the present paper are believed to be new. They could be used to establish corresponding finite element methods of incremental rate type for generalized continuum mechanics.

关键词： generalized continua incremental rate type principles of power and energy rate generalized Piola's theorem

Short-time maritime target detection based on polarization scattering characteristics

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Journal of Systems Engineering and Electronics 2024年第1期35卷 55-64页

作者： CHEN Shichao LUO Feng tian min LYU Wanghan College of Computer and Information Engineering(College of Artificial Intelligence) Nanjing Tech UniversityNanjing 211816China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200China

In this paper,a detection method combining Cameron decomposition based on polarization scattering characteristics in sea clutter background is ***,the Cameron decomposition is exploited to fuse the radar echoes of full polarization channels at the data *** to the artificial material structure on the surface of the target,it can be shown that the non-reciprocity of the target cell is stronger than that of the clutter ***,based on the analysis of the decomposition results,a new feature with scattering geometry characteristics in polarization domain,denoted as Cameron polarization decomposition scattering weight(CPD-SW),is extracted as the test statistic,which can achieve more detailed descriptions of the clutter scattering characteristics utilizing the difference between their scattering ***,the superiority of the proposed CPD-SW detector over traditional detectors in improving detection performance is verified by the IPIX measured dataset,which has strong stability under short-time observation in threshold detection and can also improve the separability of feature space zin anomaly detection.

关键词： sea clutter small target radar detection Cameron decomposition characteristics analysis

Magnetic and Optical Properties of the TiO_2-Co-TiO_2 Composite Films Grown by Magnetron Sputtering

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Chinese Journal of Aeronautics 2007年第2期20卷 162-167页

作者： LIU Fa-min DING Peng SHI Wei-mei WANG tian-min Department of Physics School of Sciences Beijing University of Aeronautics and Astronautics Beijing 100083 China

The TiO2-Co-TiO2 sandwich films were successfully grown on glass and silicon substrata making alternate use of radio frequency reactive magnetron sputtering and direct current magnetron sputtering. The structures and properties of these films were identified with X-ray diffraction （XRD）, Raman spectra and X-ray photoemission spectra （XPS）. It is shown that the sandwich film consists of two anatase TiO2 films with an embedded Co nano-film. The fact that, when the Co nano-film thickens, varied red shifts appear in optical absorption spectra may well be explained by the quantum confinement and tunnel effects. As for magnetic properties, the saturation magnetization, remnant magnetic induction and coercivity vary with the thickness of the Co nano-films. Moreover, the Co nano-film has a critical thickness of about 8.6 mn, which makes the coercivity of the composite film reach the maximum of about 1413 Oe.

关键词： TiO2-Co-TiO2 sandwich films surface structure and properties optical and magnetic properties

Subspace-Based Blind Channel Estimation Method for MIMO-OFDM Systems

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Wuhan University Journal of Natural Sciences 2005年第2期10卷 413-416页

作者： HOUYong-min RONGMeng-tian DepartmentofElectronicEngineering ShanghaiJiaotongUniversityShanghai200030China

A subspace-based blind channel estination algo rithm for MIMO-OFDM systems is proposed. This algorithm exploits the cyclostationarity introduced by cyclic prefix of OFDM to estimate the channel parameters. The proposed new algorithm is found to be outperforming the other algorithm with respect to convergence rate and achievable mean square error and robustness to channel order over determination.

关键词： MIMO OFDM blind channel estimation subspace method

Apoptosis of rabbit retinal cell after eyeball rupture

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Asian Pacific Journal of Tropical Medicine 2013年第4期6卷 273-279页

作者： Xue-min tian Yu Zhu Department of Ophthalmology the First Affiliated Hospital of Zhengzhou University

Objective:To establish rabbit eyeball rupture model by air gun in order to observe and analyze the early injury condition and reasons of retinal cell after eyeball ***:Forty eight healthy rabbits were randomly divided into control group and 1,3,6,12 and 24 h after injury *** anesthesia,the rabbit eyeball rupture model was established by air gun. Then the early pathological changes of rabbit retina were observed,and apoptotic index(Al), oncosis index(OI),the relationship between the expression amounts of apoptosis-related genes and Al were ***:Obvious pathological lesion appeared in retina 6 h after injury. Irreversible damage occurred 12-24 h after *** results of AI and OI indicated that the OI peak appeared 6 h after injury and then gradually declined,while the AI increased with the prolongation of time,and the AI was higher than OI in 12 h after *** results indicated that there was no obvious bcl-2 protein expression *** with the control group and the 3,6,12 and 24 h after the injury groups,the expressions of p53 and Caspase-3 were significandy improved and peaked at 12 h(P<0.01).Positive correlation existed among p53,Caspase-3 expression amount and cell apoptosis ***:Apoptosis and oncosis of visual cells are the main reasons of retinal cell injury.p53 and Caspase-3 are the important factors in promoting the retinal cell apoptosis after eyeball rupture.

关键词： Rabbit eyeball rupture Retinopathy Cell apoptosis bcl-2 p53 Caspase-3