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Fishery Web Service Composition Method Based on Ontology

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Journal of Integrative Agriculture 2012年第5期11卷 792-799页

作者： YU Qing-mei WANG Lan HUANG Dong-mei School of Information Technology Shanghai Ocean UniversityShanghai 201306P.R.China

Various fishery information systems have been developed in different times and on different platforms. Wet） service application composition is crucial in the sharing and integration of fishery data and information. In the present paper, a heuristic web service composition method based on fishery ontology is presented, and the proposed web services are described. Ontology reasoning capability was applied to generate a service composition graph. The heuristic function was introduced to reduce the searching space. The experimental results show that the algorithm used considers the services semantic similarity and adiusts web service composition plan by dynamically relying on the empirical data.

关键词： web services composition semantic similarity fishery ontology heuristic function

Thermal oxidation of SiAlON powders synthesized from coal gangue

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International Journal of Minerals,Metallurgy and Materials 2011年第1期18卷 77-82页

作者： Xin-mei Hou Chang-sheng Yue mei Zhang Kuo-chih Chou School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China The Key Laboratory of Ecological ＆ Recycle Metallurgy Ministry of Education of China Beijing 100083 China

The oxidation behavior of different SiAlON phases（β-SiAlON,X-phase SiAlON and 12H powders） synthesized from coal gangue in air atmosphere was investigated using isothermal thermogravimetry（TG） and field-emission scanning electron microscopy（FE-SEM）.The effect of ferric oxide impurities in coal gangue was *** results show that ferric oxide contributes to the growth of SiAlON crystalline during the synthesis *** the oxidation experiment,the existence of ferric oxide decreases the oxidation resistance of *** reason is that the impurity causes the formation of a liquid phase at a higher *** 1423-1623 K,the oxidation of SiAlON powders is diffusion controlled and it can be described by Chou＇s model.A fair agreement is found between theoretical calculations and the experimental data.

关键词： oxidation kinetics silicon compounds powders coal

Hierarchical hesitant fuzzy K-means clustering algorithm

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Applied Mathematics(A Journal of Chinese Universities) 2014年第1期29卷 1-17页

作者： CHEN Na XU Ze-shui XIA mei-mei School of Economics and Management Southeast University School of Applied Mathematics Nanjing University of Finance and Economics Business School Sichuan University School of Economics and Management Tsinghua University

Due to the limitation and hesitation in one＇s knowledge, the membership degree of an element to a given set usually has a few different values, in which the conventional fuzzy sets are invalid. Hesitant fuzzy sets are a powerful tool to treat this case. The present paper focuses on investigating the clustering technique for hesitant fuzzy sets based on the K-means clustering algorithm which takes the results of hierarchical clustering as the initial clusters. Finally, two examples demonstrate the validity of our algorithm.

关键词： 90B50 68T10 62H30 Hesitant fuzzy set hierarchical clustering K-means clustering intuitionisitc fuzzy set

An automated method for glacial lake mapping in High Mountain Asia using Landsat 8 imagery

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Journal of Mountain Science 2018年第1期15卷 13-24页

作者： ZHANG mei-mei CHEN Fang TIAN Bang-sen Key Laboratory of Digital Earth Science Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences No. 9 Dengzhuang South Road Beijing 100094 China University of Chinese Academy of Sciences Beijing 100049 China Hainan Key Laboratory of Earth Observation Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Sanya 572029 China

Glacial lakes in the High Mountain Asia(HMA)are sensitive to global warming and can result in much more severe flood disasters than some largesized *** accurate and robust method for the extraction of glacial lakes is critical to effective management of these natural water *** methods often have limitations in terms of low spectral contrast and heterogeneous backgrounds in an *** study presents a robust and automated method for the yearly mapping of glacial lake over a large scale,which took advantage of the complementarity between the modified normalized difference water index(MNDWI)and the nonlocal active contour model,required only local homogeneity in reflectance features of *** cloud computing approach with the Google Earth Engine(GEE)platform was used to process the intensive amount of Landsat 8 images from 2015 (344 path/rows and approximately 7504 scenes).The experimental results were validated by very high resolution images from Chinese GaoFen-1 (GF-1) panchromatic multi-spectral(PMS)and appeared a general good *** is the first time that information regarding the spatial distribution of glacial lakes over the HMA has been derived automatically within quite a short period of *** integrating it with the relevant indices,it can also be applied to detect other land cover types such as snow or vegetation with improved accuracy.

关键词： Glacial lake Landsat 8 Modified Normalized Difference Water Index Nonlocal active contour

Oxidative stress and DNA damages induced by cadmium accumulation

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Journal of Environmental Sciences 2007年第5期19卷 596-602页

作者： LIN Ai-jun ZHANG Xu-hong CHEN mei-mei CAO Qing Department of Environmental Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Soil Environmental Sciences Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Beijing City University Beijing 100083 China

Experimental evidence shows that cadmium （Cd） could induce oxidative stress and then causes DNA damage in animal cells, however, whether such effect exists in plants is still unclear. In the present study, Vicia faba plants was exposed to 5 and 10 mg/L Cd for 4 d to investigate the distribution of Cd in plant, the metal effects on the cell lipids, antioxidative enzymes and DNA damages in leaves. Cd induced an increase in Cd concentrations in plants. An enhanced level of lipid peroxidation in leaves and an enhanced concentration of H2O2 in root tissues suggested that Cd caused oxidative stress in Vicia faba. Compared with control, Cd-induced enhancement in superoxide dismutase activity was significant at 5 mg/L than at 10 mg/kg in leaves, by contrast, catalase and peroxidaseactivities were significantly suppressed by Cd addition. DNA damage was detected by neutral/neutral, alkaline/neutral and alkaline/alkaline Comet assay. Increased levels of DNA damages induced by Cd occurred with reference to oxidative stress in leaves, therefore, oxidative stress induced by Cd accumulation in plants contributed to DNA damages and was possibly an important mechanism of Cd-phytotoxicity in Vicia faba plants.

关键词： Cd Vicia faba oxidative stress DNA damage

q-Deformation of W (2 , 2) Lie Algebra Associated with Quantum Groups

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Acta Mathematica Sinica,English Series 2012年第11期28卷 2213-2226页

作者： La mei YUAN Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of Technology Wu Wen-Tsun Key Laboratory of Mathematics University of Science and Technology of China

The q-deformation of W（2, 2） Lie algebra is well defined based on a realization of this Lie algebra by using the famous bosonic and fermionic oscillators in physics. Furthermore, the quantum group structures on the q-deformation of W（2, 2） Lie algebra are completely determined. Finally, the 1-dimensional central extension of the q-deformed W（2, 2） Lie algebra is studied, which turns out to be coincided with the conventional W（2, 2） Lie algebra in the q → 1 limit.

关键词： W(2 2) Lie algebra q-deformation quantum group central extension

An Extension of Mapping Deformation Method and New Exact Solution for Three Coupled Nonlinear Partial Differential Equations

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Communications in Theoretical Physics 2003年第4期39卷 395-400页

作者： LIHua－mei CollegeofMathematics PhysicsandInformationScienceZhejiangNormalUniversityJinhua321004China

In this paper, we extend the mapping deformation method proposed by Lou. It is used to find new exacttravelling wave solutions of nonlinear partial differential equation or coupled nonlinear partial differential equations(PDEs). Based on the idea of the homogeneous balance method, we construct the general mapping relation betweenthe solutions of the PDEs and those of the cubic nonlinear Klein-Gordon (NKG) equation. By using this relation andthe abundant solutions of the cubic NKG equation, many explicit and exact travelling wave solutions of three systemsof coupled PDEs, which contain solitary wave solutions, trigonometric function solutions, Jacobian elliptic functionsolutions, and rational solutions, are obtained.

关键词： coupled nonlinear partial differential equations cubic nonlinear Klein-Gordon equation exact solution

Aromatic Polyimides with Tertbutyl-substituted and Pendent Naphthalene Units:Synthesis and Soluble,Transparent Properties

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Chinese Journal of Polymer Science 2015年第8期33卷 1074-1085页

作者： Chan-juan Liu mei mei Xiang-lin Pei 黄孝华 Chun Wei Key Laboratory of New Processing Technology for Nonferrous Metal & Materials Ministry of Educationand School of Material Science and EngineeringGuilin University of Technology Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry and Pharmaceutical ScienceGuangxi Normal University

A novel non-coplanar aromatic diamine monomer, 3,3＇-ditertbutyl-4,4＇-diaminodiphenyl-4＂-naphthylmethane （TAPN） was synthesized by a condensation reaction of 2-tertbutylaniline and 1-naphthaldehyde under catalyst hydrochloric acid. The structure of the monomer was confirmed by FTIR, NMR, elementary analysis and mass spectrometry. A series of aromatic polyimides （PIs） were synthesized via conventional one-step polycondensation from TAPN and various commercial aromatic dianhydrides. All of the PIs exhibit excellent solubility in common organic solvents, even in low boiling point solvents such as chloroform （CHC13）, tetrahydrofuran （THF） and acetone. The PIs present outstanding thermal stability with the glass transition temperature （Tg） ranged from 299 ℃ to 350 ℃, and the temperature at 10% weight loss ranged from 490 ℃ to 504 ℃, and high optical transparency with the cutoff wavelengths of 306-356 nm. Moreover, the flexible and tough PI films have prominent mechanical properties with tensile strengths in the range of 77.6-90.5 MPa, tensile modulus in the range of 1.8-2.4 GPa and elongation at break in the range of 6.3%-9.5%, as well as lower dielectric constant （2.89-3.12 at 1 MHz） and lower moisture absorption （0.35%-0.66%）.

关键词： Polyimides Solubility Dielectric constant Tertbutyl Naphthyl.

Calculation of the extreme ultraviolet radiation of the earth's plasmasphere

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Science China(Technological Sciences) 2010年第1期53卷 200-205页

作者： FOK mei-Ching NASA Goddard Space Flight Center GreenbeltMD 20771USA

The dynamic global core plasma model(DGCPM) is used in this paper to calculate the He+ density distribution of the Earth's plasmasphere and to investigate the configurations and 30.4 nm radiation properties of the *** comparisons between the simulation results and IMAGE mission observations show:That the equatorial structure of the plasmapause is mainly located near 5.5 RE and the typical scale of plasmasphere shrinking or expansion within 10 min is approximately 0.1 RE;that the plasmaspheric shoulders are formed and rotate noon-ward from the dawn sector under the conditions of strong southward turning of the interplanetary magnetic field(IMF);that the plasmaspheric plumes will rotate dawn-ward from the night sector and become narrow for the southward turning of the *** simulated images from the lunar orbit show that the plasmasphere locating within the geocentric distance of 5.5 RE corresponds to field of view(FOV) of 10.7°×10.7° for the moon-based EUV imager,and that the 30.4 nm radiation intensity of the plasmasphere is 0.1-11.4 *** plasmaspheric shoulders and plumes locating toward the moon-side are for the first time simulated with typical scale level of 0.1 RE from the side view of the *** simulated results provide an important theoretical basis for the lunar-based EUV camera design.

关键词： earth’s plasmasphere dynamic global core plasma model extreme ultraviolet radiation lunar-based imaging