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Applied Mathematics(A Journal of Chinese Universities) 2007年第2期22卷 201-206页

作者： Mo Jiaqi Department of Mathematics, Anhui Normal University, Wuhu 2.1000, China Department of Mathematics, Huzhou Teachers college, Huzhou 313000, China Division of computational Science, E-Institutes of Shanghai Universities at SJTU, Shanghai 2.02.0, China. Department of Mathematics Anhui Normal University Wuhu 241000 China

A class of nonlinear initial boundary value problems for reaction diffusion equations with boundary perturbation is considered. Under suitable conditions and using the theory of differential inequalities the asymptoti... 详细信息

关键词： nonlinear reaction diffusion singular perturbation boundary perturbation

DEEP TECTONOTHERMAL MECHANISM FOR THE TECTONIC EXTENSION OF THE EASTERN ASIAN CONTINENTAL MARGIN

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Geotectonica et Metallogenia 2003年第1期27卷 156-164页

作者： ZHANG Jian and Shi Yaolin(Laboratory of computational Geodynamics, Graduate School of the Chinese Academy of sciences,Beijing 100039, China) Laboratory of computational Geodynamics Graduate School of the Chinese Academy of Sciences Betjing 100039 China

The continental marginal extension concept developed by Chinese geologists recently may be applied to the explanation about the Cenozoic extension and divergent movement of the Eastern Asian continental margin. From the viewpoint of continental marginal extension, this paper discusses the deep tectonothermal mechanism of the tectonic extension of the Eastern Asian continental *** Eastern Asian continental margin is an extensional belt with intensive magmatism and structural deformation, geophysically characterized by continual earthquakes and obvious geothermal *** tomographical results about the Eastern Asian continental margin imply that the pacific Plate is subducted toward the Eurasian Plate at a low angle and the diving pacific Plate lies on the surface of the 670-km phase transitional zone. We interpret this feature to be resulted from retrogressive subduction followed by continental marginal extension. Our thermal modeling and geodynamical computation results suggest that the retrogressive subduction occurred at about 76Ma and the withdrawal of the trench served to supply the volume for the continental growth, which led to the formation of the growing front of the Eastern Asian continental margin. The growth width of the Eastern Asian continental margin is about 700 km.

关键词： the Eastern Asian continental margin tectonothermal modeling retrogressive subduction continental marginal growth

PARALLEL GENETIC ALGORITHM ON PVM

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Wuhan University Journal of natural sciences 1996年第Z1期1卷 605-610页

作者： Cuangming Lin Xin Yao(Department of Computer Science, computational Intelligence GroupUniversity college, The University of New South Wales, ADFA)lain Macleod(Computer {2. Lab RSISE ANUCanberra, ACT, Australia 2.00)Lishan Kang Yuping Chen(Institu

In this paper we describe an implementation of some kinds of parallel genetic algorithms on the PVM,Parallel Virtual Machine, a portable parallel environment. We give details of a genetic algorithm running On many small subpopulations with an occasional identification and exchange of their useful information among subpopulations by means of message-passing functions of PVM. In this work, experiments were done to compare the parallel genetic algorithm and traditional sequential genetic algorithms.

关键词： Parallel Genetic Algorithms Parallel Virtual Machine(PVM) Island Model Cellular Model.

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多项式矩阵Drazin逆的两个算法

上海师范大学学报（自然科学版） 2002年第2期31卷 31-38页

作者：高璟王国荣上海应用技术学院上海200235 上海师范大学数理信息学院上海200234

利用计算常数矩阵 Drazin逆的有限算法 ,给出了计算多项式矩阵 Drazin逆的有限算法 ,并用 Matlab符号运算软件包实现有限算法 .还提出了一种计算 Drazin逆的二维递推算法。

关键词： Drazin逆多项式矩阵 Drazin逆递推算法

ON THE OBSERVABILITY AND DETECTABILITY OF LINEAR STOCHASTIC SYSTEMS WITH MARKOV JUMPS AND MULTIPLICATIVE NOISE

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Journal of Systems Science & Complexity 2010年第1期23卷 102-115页

作者： Yuanhua NI Weihai ZHANG Haitao FANG Key Laboratory of Systems and Control Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China. college of Information and Electrical Engineering Shandong University of Science and Technology Qingdao China.

This paper presents the notions of exact observability and exact detectability for Markov jump linear stochastic systems of Ito type with multiplieative noise （for short, MJLSS）. Stochastic Popov-Belevith-Hautus （PBH） Criterions for exact observability and exact detectability are respectively obtained. As an application, stochastic H2.H∞ control for such MJLSS is discussed under exact detectability.

关键词： Exact detectability exact observability Markov jump systems multiplicative noise PBH Criterion stochastic H2.H∞ control.

Research Advances on the Loess-Bedrock Landslide in China

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Research Advances on the Loess-Bedrock Landslide in China

A study of the early warning signals of abrupt change in the pacific decadal oscillation

2.12.Asia pacific Conference on Environmental Science and Technology(APEST 2.12.

作者： Chengyi Fan1 a Shouyun Liang1 b and Xiangxian Ma2.c 1 Key Laboratory of Mechanics on Disaster and Environment in Western China the Ministry of Education of China and Department of Geological Engineering college of Civil Engineering and Mechanics Lanzhou University Lanzhou 730000 P.R.China 2.Key Laboratory of Petroleum Resources Research Institute of Geology and Geophysics Chinese Academy of sciences Lanzhou 730000 P.R.China

Loess landslide is one of the serious geological disasters in and around the loess plateau in northwest of *** the major type of loess landslide in this area,loess-bedrock landslide widely distributes,frequently occurs,and causes serious casualties and property *** the formation mechanism and protection countermeasures arousing increasingly,the scientists have paid close attention and got a series of research *** is very important of systematic summary and thorough analysis of the loess-bedrock landslide for reducing disasters caused by loess *** acquired achievements of the loess-bedrock landslide have been summarized on classification,formation mechanism,influencing factors and hazard range,and some main fields are put forward for further researching:（1） to explore the control action and boundary effect of paleo-weathering crust upon the top of bedrock for the loess-bedrock landslide;（2. to research the influence of the orientation and the top fluctuant configuration of bedrock and the slope structure on loess landslide;（3） to study the relationship between the landslide formation and the slope profile structure,the physical,hydrological and mechanical properties of the rock-soil mass;（4） to research the critical value of locked segment in the loess-bedrock cutting layer landslide;（5） to analyze the main influencing factors and forecast the hazard range of different types of the loess-bedrock landslide.

关键词： Loess-bedrock landslide Landslide classification Formation mechanism Hazard range Research advances.

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Chinese Physics B 2015年第8期24卷 662-673页

作者：吴浩侯威颜鹏程张志森王阔 Hunan Climate Center National Climate Center college of Atmospheric sciences Lanzhou University Zhejiang Climate Center

In recent years, the phenomenon of a critical slowing down has demonstrated its major potential in discovering whether a complex dynamic system tends to abruptly change at critical points. This research on the pacific decadal oscillation(PDO) index has been made on the basis of the critical slowing down principle in order to analyze its early warning signal of abrupt change. The chaotic characteristics of the PDO index sequence at different times are determined by using the largest Lyapunov exponent(LLE). The relationship between the regional sea surface temperature(SST) background field and the early warning signal of the PDO abrupt change is further studied through calculating the variance of the SST in the PDO region and the spatial distribution of the autocorrelation coefficient, thereby providing the experimental foundation for the extensive application of the method of the critical slowing down phenomenon. Our results show that the phenomenon of critical slowing down, such as the increase of the variance and autocorrelation coefficient, will continue for six years before the abrupt change of the PDO index. This phenomenon of the critical slowing down can be regarded as one of the early warning signals of an abrupt change. Through calculating the LLE of the PDO index during different times, it is also found that the strongest chaotic characteristics of the system occurred between 1971 and 1975 in the early stages of an abrupt change(1976), and the system was at the stage of a critical slowing down, which proves the reliability of the early warning signal of abrupt change discovered in 1970 from the mechanism. In addition, the variance of the SST,along with the spatial distribution of the autocorrelation coefficient in the corresponding PDO region, also demonstrates the corresponding relationship between the change of the background field of the SST and the change of the PDO.

关键词： abrupt climate change critical slowing down early warning signals largest Lyapunov exponent sea surface temperature

湘东邓阜仙花岗岩成因及对成矿的制约:锆石/锡石U-Pb年代学、锆石Hf-O同位素及全岩地球化学特征

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岩石学报 2018年第3期34卷 637-655页

作者：何苗刘庆侯泉林孙金凤张吉衡伍式崇朱浩锋中国科学院地球动力学重点实验室中国科学院大学地球与行星科学学院北京100049 湖南省地质矿产勘查开发局四一六队株洲412007

南岭地区晚三叠世成矿规模较小且零散,而晚侏罗世成矿规模巨大,以往的研究较少关注两期花岗岩之间的成因联系及与成矿的关系。湘东邓阜仙花岗岩体位于南岭地区中段,是具有晚三叠世、晚侏罗世两期岩浆活动的复式岩体,并发育有钨矿床。本... 详细信息

南岭地区晚三叠世成矿规模较小且零散,而晚侏罗世成矿规模巨大,以往的研究较少关注两期花岗岩之间的成因联系及与成矿的关系。湘东邓阜仙花岗岩体位于南岭地区中段,是具有晚三叠世、晚侏罗世两期岩浆活动的复式岩体,并发育有钨矿床。本文对区内花岗岩及蚀变岩型矿体进行了锆石/锡石U-Pb定年、锆石Hf-O同位素与全岩主微量分析,以期揭示两期花岗岩的地球化学特征、成因联系和与成矿的关系。锆石SIMS U-Pb定年结果表明,区内花岗岩的成岩年龄分别为~2.8Ma和~153Ma。湘东钨矿的锡石U-Pb定年结果为154.4±2.1Ma,表明钨锡矿化形成于晚侏罗世。两期花岗岩均具有高硅、高钾、弱过铝质至强过铝质的特征,结合锆石的Hf-O同位素组成,指示它们具有相似的成因,均起源于中-古元古代基底地壳物质的部分熔融,晚三叠世花岗岩混入了更多的成熟地壳物质,区域的富矿地层对于湘东钨矿形成的直接影响不大。邓阜仙晚侏罗世花岗岩更高的Fe含量和Rb/Sr、Rb/Ba比值,更显著的Eu、Ce负异常,指示其经历了更高程度的分异演化,两期成岩过程中的差异可能与区域上的晚侏罗世发生的太平洋俯冲作用相关。

关键词：花岗岩成矿作用锆石/锡石u—Ph定年 Hf-O同位素湘东

乌苏里江下游浮游动物群落结构及在河流健康评价中的地位

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水产学杂志 2011年第3期24卷 48-52,59页

作者：李喆姜作发马波陈瑛王鹏中国水产科学研究院黑龙江水产研究所农业部黑龙江流域渔业资源环境科学观测实验站黑龙江哈尔滨150070 哈尔滨师范大学生命科学与技术学院黑龙江哈尔滨150025

2.10年5月(春季)、7月(夏季)、10月(秋季)对乌苏里江下游浮游动物的群落结构、季节变动、多样性及在河流健康评价中的地位进行了调查与研究,旨为乌苏里江渔业资源增殖放流提供背景资料。结果表明,乌苏里江下游(海青-乌苏镇江段)以原生动... 详细信息

2.10年5月(春季)、7月(夏季)、10月(秋季)对乌苏里江下游浮游动物的群落结构、季节变动、多样性及在河流健康评价中的地位进行了调查与研究,旨为乌苏里江渔业资源增殖放流提供背景资料。结果表明,乌苏里江下游(海青-乌苏镇江段)以原生动物(数量占87.7%)和轮虫(生物量占68.4%)为主,趋向小型化,且浮游动物的多样性较为丰富,为乌苏里江下游大麻哈鱼等许多名优水产动物的繁殖、育肥提供丰富的饵料基础。浮游动物个体较小、数量多、代谢活动强烈、繁殖迅速、易于散布,能对水体提供快速的早期反映;是食物网的重要基础环节,在水域生态系统的物质循环与能量流动中占有重要地位,是河流水生生物资源的重要组成部分,是河流健康评价的重要指标之一。

关键词：乌苏里江下游浮游动物群落结构河流健康评价

histone methyltransferase NSD2.mediates the survival and invasion of triple-negative breast cancer cells via stimulating ADAM9-EGFR-AKT signaling

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Acta Pharmacologica Sinica 2019年第8期40卷 1067-1075页

作者： Jun-Jian Wang June X.Zou Hong Wang Zhi-Jian Duan Hai-Bin Wang Peng Chen Pei-Qing Liu Jian-Zhen Xu Hong-Wu Chen School of Pharmaceutical sciences Sun Yat-Sen University Department of Biochemistry and Molecular Medicine School of MedicineUniversity of California First Affiliated Hospital of Guangzhou University of Chinese Medicine computational Systems Biology Lab Shantou University Medical College Comprehensive Cancer Center University of CaliforniaDavisSchool of Medicine

Triple-negative breast cancer(TNBC)is a heterogeneous disease with a poor prognosis due to the lack of an effective targeted *** lysine methyltransferases(KMTs)have emerged as attractive drug targets for cancer ***,the function of the majority of KMTs in TNBC has remained largely *** the current study,we found that KMT nuclear receptor binding SET domain protein 2.NSD2.is overexpressed in TNBC tumors and that its overexpression is associated with poor survival of TNBC ***2.regulates TNBC cell survival and invasion and is required for tumorigenesis and tumor ***,NSD2.directly controls the expression of EGFR and ADAM9,a member of the ADAM(a disintegrin and metalloproteinase)family that mediates the release of growth factors,such as *** its methylase activity,NSD2.overexpression stimulates EGFR-AKT signaling and promotes TNBC cell resistance to the EGFR inhibitor ***,our results identify NSD2.as a major epigenetic regulator in TNBC and provide a rationale for targeting NSD2.alone or in combination with EGFR inhibitors as a targeted therapy for TNBC.

关键词： NSD2 Cell survival Cell invasion histone methyltransferase Triple-negative breast cancer EGFR