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Chinese Annals of Mathematics,Series B 2011年第2期32卷 161-186页

作者： Jian ZHUANG Department of Statistics School of Economics Anhui University of Technology Maanshan 243000 Anhui China

Lateral inhibitory effect is a well-known feature of information processing in neural *** paper presents a neural array model with simple lateral inhibitory *** detailed examining into the dynamics of this kind of neural array,the author gives the sufficient conditions under which the outputs of the network will tend to a special stable pattern called spatial sparse pattern in which if the output of a neuron is 1,then the outputs of the neurons in its neighborhood are *** ability called spatial sparse coding plays an important role in self-coding,self-organization and associative memory for patterns and pattern *** main conclusions about the dynamics of this kind of neural array which is related to spatial sparse coding are introduced.

关键词：神经系统阵列侧向横向连接抑制动力学稀疏编码空间格局信息处理抑制效应

Bell violation for the thermal states of an XXZ spin chain with Dzialoshiski-Moriya interaction

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Science China(Physics,Mechanics & Astronomy) 2010年第11期53卷 2074-2079页

作者： MA XiaoSan 1 & WANG AnMin 2 1 School of Electric Engineering and Information,anhui university of technology,Maanshan 243002,China 2 Department of Modern Physics,university of Science and technology of China,Hefei 230026,China School of Electric Engineering and Information Anhui University of Technology Maanshan China Department of Modern Physics University of Science and Technology of China Hefei China

The effect of Dzialoshiski-Moriya (DM) interaction on the violation of Bell inequality for thermal states of interacting qubits via a two-qubit XXZ spin chain is *** results imply that the DM interaction and anisotropy taking a large positive value can enhance the Bell violation and improve the threshold temperatures of *** the comparison between the Bell violation and thermal entanglement,we find that the threshold temperatures of thermal entanglement are higher than those of the Bell *** implies that some states are entangled but the Bell inequality is not violated.

关键词： Bell violation threshold temperatures DM interaction

Stability of impulsive stochastic functional differential systems in terms of two measures via comparison approach

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Science China(Information Sciences) 2012年第6期55卷 1313-1322页

作者： YAO FengQi 1,2 & DENG FeiQi 1 1 Institute of System Engineering,South China university of technology,Guangzhou 510640,China 2 School of Electrical Engineering and Information,anhui university of technology,Maanshan 243032,China Institute of System Engineering South China University of Technology Guangzhou China School of Electrical Engineering and Information Anhui University of Technology Maanshan China

Comparison principles for general impulsive stochastic functional differential systems are *** the comparison principles and the theory of differential inequalities,stability and instability,involving two measures,of impulsive stochastic functional differential systems are *** stability and instability criteria are obtained,and two examples are also given to illustrate our results.

关键词： stochastic systems impulsive functional differential systems comparison principle stability in terms of two measures instability

Thermal stability conditions of a weakly interacting Fermi gas in a weak magnetic field

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Progress in Natural Science:Materials International 2009年第1期19卷 121-124页

作者： Fudian Mena,Hui Liub,Houyu Zhua a College of Physics Science and technology,China university of Petroleum(East China),Dongying 257061,China b College of Science,anhui Science and technology university,Fengyang 233100,China College of Physics Science and technology China University of Petroleum (East China) Dongying 257061 China College of Science Anhui Science and Technology University Fengyang 233100 China

On the basis of the results derived from pseudopotential method and ensemble theory,thermal stability of a weakly interacting Fermi gas in a weak magnetic field is studied by using analytical method of *** exact analytical expressions of stability conditions at different temperatures are given,and the effects of interactions as well as magnetic field on the stability of the system are *** is shown that there is an upperlimit magnetic field for the stability of the system at low temperatures,and there is an attractive dividing value at high *** attractive interaction is lower than the critical value,the stability of the system has no request for magnetic field,but if attractive interaction is higher than the dividing value,a lower-limit magnetic field exists for the stability of the system.

关键词： Fermi gas Interaction Heat capacity Stability

Influence of Ingredients of Carbon Black Nano-Particle Suspension of Ammonia Solution on Viscosity of Nanofluid

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湖南大学学报（自然科学版） 2009年第S1期36卷 115-118页

作者： CHENG Bo1,2,DU Kai1,ZHANG Xiao-song1,YANG Liu1(1.School of Energy & Environment,Southeast university,Nanjing,Jiangsu 210096,China 2.School of Construction Engineering,anhui university of technology,Maanshan,anhui 243000,China) School of Energy and Environment Southeast University Nanjing 210096 China School of Construction Engineering Anhui University of Technology Maanshan 243000 China

A series of experiments were performed on the viscosity of a nanofluid,produced by mixing carbon black and mulsifier OP-10 using ammonia-water with the ultrasonic *** results show that,when adding surfactant separately in low mass concentrations,at first the viscosity of solution decreases sharply compared with that of ammonia-water,then increases with increasing the concentration of *** a certain concentration of surfactant,the viscosity of nanofluids increases with increasing the concentration of *** on Einstein model and Langmuir absorption theory,a new model was summed up for *** with test values,the calculated values on the new model have verified that the model is suitable to predict the viscosity of nanofluids,because the maximum relative error is less than 5%.Nano-particles absorption in the nanofluids is not only single-molecule layer adsorption,but also multi-layer molecular adsorption and other complicated *** the new model,only based on single-molecule layer adsorption theory of Langmuir,is not fully in line with the real circumstances.

关键词： nanofluid viscosity surfactant absorption

Effects of Y_2O_3 on the microstructure and wear resistance of cobalt-based alloy coatings deposited by plasma transferred arc process

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Rare Metals 2007年第2期26卷 103-109页

作者： HOU Qingyu HUANG Zhenyi GAO Jiasheng anhui Key Laboratory of Metal Materials and Processing School of Materials Science and Engineering Anhui University of Technology Ma＇anshan 243002 China

Cobalt-based alloys with different Y2O3 contents were deposited on Q235A-carbon steel using plasma transferred arc （PTA） welding machine. The effect of Y2O3 on the microstructure and wear resistance properties of the cobait-based alloys were investigated using an optical microscope, a scanning electron microscope （SEM）, X-ray diffraction （XRD）, and transmission electron microscopy （TEM）. It was found that a cobalt-based solid solution with a face-centered cubic crystal structure was presented accompanied by the secondary phase M7C3 with a hexagonal crystal structure in the Y2O3-free cobalt-based alloy coating. Several stacking faults exist in the cobalt-based solid solution. The addition of Y2O3 leads to the existence of the Y2O3 phase in the Y2O3-modified coatings. Though stacking fault exists in the Y2O3-modified coatings, its density increases. The addition of Y2O3 can refine the microstructure and can increase the wear resistance properties when its contents are less than or equal to 0.8 wt.%. However, further increase of its contents will lead to the agglomeration of undissolved Y2O3 particles at the γ-Co grain boundary, and will lead to a coarse microstructure and lower wear resistance properties.

关键词： cobalt-based alloy plasma transferred arc (PTA) Y2O3 microstructure wear resistance

VUV luminescence properties of Y_(0.95)Eu_(0.05)PO_4 phosphor derived by a modified solid-state route

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Rare Metals 2008年第4期27卷 354-357页

作者： ZHENG Cuihong ZHU Weichang WANG Lu School of Materials Science and Engineering and Anhui Key Laboratory of Metal Materials and Processing Anhui University of Technology Ma ＇anshan 243002 China

A modified solid-state route was attempted to prepare Y0.95 Eu0.05PO4 PDP phosphor, involving milling a powdered mixture of YCl3, EuCl3, and （NH4）2HPO4 and calcining the milling-derived precursor. The thermal decomposition behavior of the milling-derived precursor was investigated by thermogravimetric analysis （TGA）. Phase compositions, morphologies, and luminescence properties of the prepared phosphor powder were characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM）, and vacuum ultraviolet （VUV） emission spectra, respectively. The results indicated that the Y0.95Eu0.05PO4 phosphor powder obtained at a calcination temperature of 900℃ was xenotime-structured. The phosphor powder particles were uniform and spherical-shaped with a primary particle size of-200 um. In comparison with that derived by the conventional solid-state route, the phosphor powder prepared by the modified solid-state route exhibited a higher color purity, presenting a predominant emission peak at 619 nm under 147 um VUV excitation.

关键词： phosphor luminescence properties vacuum ultraviolet solid-state reaction

Lipschitz spaces and Q_K type spaces

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Science China Mathematics 2010年第3期53卷 771-778页

作者： LI Hao 1 , WULAN Hasi 1, & ZHOU JiZhen 1,2 1 Department of Mathematics, Shantou university, Shantou 515063, China 2 School of Sciences, anhui university of Science and technology, Huainan 232001, China Department of Mathematics Shantou University Shantou China School of Sciences Anhui University of Science and Technology Huainan China

If f(z) =Σ∞ n=0 anzn and g(z) =Σ∞n=0bnzn for functions f, g are analytic in the unit disc, the Hadamard products of f and g is defined by f * g = ∞ n=0 a n b n z n . In this paper, the Lipschitz spaces Λ(s, α) ... 详细信息

关键词： Q K type spaces Lipschitz spaces Hadamard products

A FREE-BOUNDARY PROBLEM TO DYNAMIC SYSTEM FOR PURE FOREST

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Annals of Differential Equations 2010年第2期26卷 227-233页

作者： Longfeng Xu, Hanbing Wu (anhui university of technology, Maanshan 243002, anhui, )

A free-boundary model of nonlinear dynamic system for pure forest is presented, in which the felling rate is unbounded nearby the free boundary. The effiect of unbounded function on a priori estimate and analysis of r... 详细信息

关键词： felling rate distribution density free boundary integral equation fixed point theorem classical solution