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reflecting Backward Stochastic Differential Equations with Jumps in Infinite Horizon and Optimal Stochastic Control

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Reflecting Backward Stochastic Differential Equations with J...

Extension of reverse Hilbert-type inequality with some parameters

第二十四届中国控制会议

作者： Situ rong department of mathematics {2. University guangzhou 510275 china

In this paper we obtain the existence and uniqueness of solutions to reflecting Backward Stochastic Differential Equations (rBSDE) with jumps in infinite horizon and with non-Lipschitzian coefficients. Then the results are applied to get the existence of an non-Lipschitzian optimal stochastic control for an energy functional subject to such system in the infinite horison.

关键词： reflecting Backward Stochastic Differential Equations Optimal Stochastic Control

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Journal of Shanghai University(English Edition) 2010年第3期14卷 211-216页

作者：辛冬梅 department of mathematics Guangdong Education College

By introducing some parameters and estimating the weight function,we obtain an extension of reverse Hilbert-type inequality with the best constant *** applications,we build its equivalent forms and some particular res... 详细信息

关键词： reverse Hilbert-type inequality H¨older’s inequality weight function

Supporting of Nickel(Ⅱ) Acenaphthenediimine with Free Amino Group for Ethylene polymerization

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Journal of Wuhan University of Technology(Materials Science) 2010年第2期25卷 260-264页

作者：胡扬剑 department of Chemistry and Chemical Engineering Huaihua College

Bis （4-（4-amino-3, 5-diethylbenzyl）-2. 6-diethylphenylimino） acenaphthene] di- chloronickel （NiLCl2. was prepared and supported on SiO2.modified by methyl trichlorsilane（S-1） and on SiO2.MgCl2.TiCl4 （S-2. respectively. Two supported catalysts S-1 and S-2.used as catalysts for ethylene polymerization were studied and the influences of various polymerization conditions, including the polymerization temperature, cocatalysts, Al/Ni molar ratio on the catalytic activity, branching degree and branch length of pE were also investigated. The experimental results show that the supported catalysts exhibit higher catalytic activity for ethylene polymerization, the highest catalytic activity of S-1 using AlEt2.l as cocatalyst at 50 ℃, reaching 5.8×10^5gpE/molNi·h, and needed lower Al/Ni molar ratio compared to homogeneous analogue.

关键词： nickel diimine complex supported catalyst branched polyethylene diethylaluminium chloride

CAUCHY prOBLEM FOr A DEGENErATE pArABOLIC EQUATION WITH NON-DIVErGENCE FOrM

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Acta Mathematica Scientia 2010年第5期30卷 1679-1686页

作者：周文书姚正安 department of mathematics Dalian Nationalities University department of mathematics Sun Yat-Sen University

In this article, it is shown that there exists a unique viscosity solution of the Cauchy problem for a degenerate parabolic equation with non-divergence form.

关键词： degenerate parabolic equation viscosity solution uniqueness existence

Spatial calculating analysis model research of land-use change in urban fringe districts

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Science china(Technological Sciences) 2008年第S1期51卷 186-194页

作者： ZHANG XinChang,pAN Qiong,wang ZhongYang & CHEN XinXiang department of remote Sensing and GIS Engineering,Sun Yat-sen University,{2.,china department of remote Sensing and GIS Engineering Sun Yat-sen University Guangzhou 510275 China

The spatial calculating analysis model is based on GIS overlay. It compartmental-izes the research district land into three spatial parts: unchanged part,converted part and increased part. By this method we can evaluate the numerical model and dynamic degree model for existing calculating changing speed of land-use. Fur-thermore the paper raises reviving the calculating analysis model of spatial infor-mation in order to predict the dynamic changing level of all sorts of land. More concretely speaking,the model is mainly to know the changing area and changing speed (increased or decreased) of different land classifications from the micro-cosmic angle and to clearly show the spatial distribution and spatio-temporal law for changing urban lands. We discover why the situation has taken place by com-bining social and economic conditions. The result indicates that the calculating analysis model of spatial information can derive more accurate procedure of spatial transference and increase of all kinds of land from the microcosmic angle. By this model and technology,we can make the research of spatio-temporal structure evolution in land-use be more systematical and deeper. The result will benefit the planning management of urban land-use of developed districts in china in the fu-ture.

关键词： land-use dynamic change calculating analysis model

The structural characterization of some palladium (Ⅱ) complexes of 1,10-phenanthroline and amino acids by NMr spectroscopy

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Chinese Journal of Chemistry 1995年第3期13卷 207-215页

作者： YE, Bao-Hui ZENG, Tian-Xian JI, Liang-NianChemistry department, zhongshan University, {2., Guangdong 510275, china

The complexes [pd(phen)(aa)]Cl.3H2., where phen is 1,10-phenanthroline and aa is the anion of glycine (gly), .DL-alanine (ala), DL-serine (ser) or DL-asparagine (asn), were synthesized and characterized by spectroscopies. The NMr signals were assigned completely on the basis of the double irradiation, 1H-1H COSY and 1H-13C COSY techniques. In the 1H NMr spectra of phen in the complexes, the signals of 2.H and 9-H show upfield shifts 0.8-1 ppm, while the signals of 4-H and 3-H show downfield shifts or almost no shift, as compared to the free phen ligand, and the signal of 4-H appears in the lowest field. The signals of ring B which is trans to the carboxyl group show significant upfield shifts as compared to those of ring A. The probable structures were described on the basis of a metal-non-bonded hydrogen interaction, trons effect and ligand-ligand interaction. There may exist three conformation isomers in the [pd(phen)(asn)]Cl.3H2. complex at room temperature. The preferred conformation isomer is about 75% in terms of the relative peak areas in the a-CH part of the spectra.

关键词： palladium(II) phenanthroline amino acids 2. NMr.

Interactive early warning technique based on SVDD

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Journal of Systems Engineering and Electronics 2007年第3期18卷 527-533页

作者： Lin Jian~(1,2. peng Minjing~(1,2. 1.School of Business Administration,South china Univ.of Technology,guangzhou 510641,F.r.china 2.Systems Science & Technology Inst,Wuyi Univ.,Jiangmen 52.02.,p.r.china [a]School of Business Administration South china Univ. of Technology guangzhou 510641 p. r. china [b]Systems Science Technology Inst Wuyi Univ. Jiangmen 52.02. p. r. china

After reviewing current researches on early warning, it is found that “bad”data of some systems is not easy to obtain, which makes methods proposed by these researches unsuitable for monitored systems. An interactive early warning technique based on SVDD （support vector data description） is proposed to adopt “good” data as samples to overcome the difficulty in obtaining the “bad” data. The process consists of two parts：（1） A hypersphere is fitted on “good” data using SVDD. If the data object are outside the hypersphere, it would be taken as “suspicious”; （2. A group of experts would decide whether the suspicious data is “bad” or “good”, early warning messages would be issued according to the decisions. And the detailed process of implementation is proposed. At last, an experiment based on data of a macroeconomic system is conducted to verify the proposed technique.

关键词： interactive data mining early warning support vector data description group decision making.

Two new diterpenoids from the marine Soft coral Clavularia viridis

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Chinese Journal of Chemistry 1992年第2期10卷 155-160页

作者： SU,Jing-Yu ZHONG,Yong-Li ZENG,Long-Mei department of Chemistry,zhongshan University,{2. department of Chemistry Zhongshan University Guangzhou 510275

Two new dolabellane diterpenoids named clavudiol B(2.and clavirolide F(5),have been iso- lated from the soft coral Clavularia viridis,collected from Xisha Islands in the South china *** structures have been determined... 详细信息

关键词： Two new diterpenoids from the marine Soft coral Clavularia viridis ppm

Morita Equivalence for Factorisable Semigroups

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Acta Mathematica Sinica,English Series 2001年第3期17卷 437-454页

作者： Yu Qun CHEN department of mathematics,South {2. Normal University,guangzhou 510631,p.r.china E-mail:yqchen@scnu.edu.cnK.p.SHUM department of mathematics,The Chinese University of Hong Kong,Shatin,N.T.,Hong Kong E-mail:kpshum@math.cuhk.edu.hk department of mathematics South China Normal University Guangzhou 510631 P. R. China department of mathematics The Chinese University of Hong Kong Shatin N.T. Hong Kong

recall that the semigroups S and r are said to be strongly Morita equivalent if there exists a unitary Morita context （S,r,Spr,rQS,） with and *** a factorisable semigroup S,we denote ζS={（s1,s2./sub>）∈S×S|ss1=ss2./sub>,S∈S},S′=S/ζS and US-FAct={SM∈ S-Act|SM=M and SHomS（S,M）≌M}.We show that,for factorisable semigroups S and r,the categories US-FAct and Ur-FAct are equivalent if and only if the semigroups S′ and r′ are strongly Morita *** conditions for a factorisable semigroup to be strongly Morita equivalent to a sandwich semigroup,local units semigroup,monoid and group separately are also ***,we show that a seinigroup S is completely simple if and only if S is strongly Morita equivalent to a group and for any index set I,SSHomS(S,i∈IS)→i∈IS,st·f（st）f is an S-isomorphism.

关键词： Category S-acts Fact orisable semigroup Morita equivalence