检索结果-南通市图书馆

Asymptotic Properties of Self-Consistent Estimatorswith Doubly-Censored Data

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2001年第4期17卷 581-594页

作者： Qi Qing YU Lin Xiong LI Mathematics department, SUNY at Binghamton, Binghamton, NY 13.02, USA Mathematics department. zhongshan university,{3., P. R. china department of Mathematics. university of New Orleans, New Orleans, LA 70148, USA Mathematics department SUNY at Binghamton Binghamton USA Mathematics department Zhongshan University Guangzhou 510275 P. R. China department of Mathematics University of New Orleans New Orleans USA

The asyrmptotic properties of the self-consistent estimator (SCE) of a distribution function F of a random variable X with doubly-censored data are examined by several authors under the asstumption that X is observable everywhere in the interval [a, b], where a=inf{x: F(x)>0} and b=sup{x: F(x)<1}. Such an assumption does not allow the situation that X is discrete and the situation that X is only observable in a nontrivial subinterval of [a, b]. However, often in practice this assumption is not satisfied. In this manuscript we establish strong uniform consistency, asymptotic normality and asymptotic efficiency of the SCE under a set of assumptions that allow the situation that X is discrete and the situation that X is only observable in a nontrivial subinterval of [a, b]. Finally, we point out a gap in the proofs of the existing results in the literature due to the definition of the SCE.

关键词： Asymptotic normality Generalized MLE Right censoring Self-consistent algorithm Strong consistency

On Some Properties of Infinite-dimensional Bers Fiber Space

在线全文

学校读者我要写书评

暂无评论

Communications in Mathematical Research 1999年第2期 77-82页

作者： Liu Lixin (department of Mathematics, zhongshan university, guangzhou, {3.) Yang Xiaoming (Hangzhou university Press, Hangzhou university, Hangzhou, 3.0028)

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＴｅｉｃｈｍüｌｅｒｓｐａｃｅｓｄｉｓｃｕｓｓｅｄｉｎｔｈｉｓｐａｐｅｒａｒｅｉｎｆｉｎｉｔｅｄｉｍｅｎｓｉｏｎａｌＴｅｉｃｈｍüｌｅｒｓｐａｃｅｓｗｉｔｈｃｏｍｐｌｅｘｓｔｒｕｃ... 详细信息

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＴｅｉｃｈｍüｌｅｒｓｐａｃｅｓｄｉｓｃｕｓｓｅｄｉｎｔｈｉｓｐａｐｅｒａｒｅｉｎｆｉｎｉｔｅｄｉｍｅｎｓｉｏｎａｌＴｅｉｃｈｍüｌｅｒｓｐａｃｅｓｗｉｔｈｃｏｍｐｌｅｘｓｔｒｕｃｔｕｒｅ．Ｔｈｉｓｉｍｐｌｉｅｓｔ...

关键词： Bers Fiber Space Teichmüller Metric Hyperbolic Metric

FREE ENERGIES OF FORMATION FOR ELECTROCHEMICALLOY ALLOYED Y-Cu SYSTEM

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1990年第7期3卷 28-32页

作者： YANG Qiqin LIU Guankun LIU Zejin zhongshan university,guangzhou,china YANG Qiqin,Associate Professor,{3. of Chemistry,zhongshan university,guangzhou,china

The electrochemical alloying of Y-Cu system in molten NaCl-KCl-YCl_3.has been investi- *** free energy changes of the formation reactions of the intermetallic compounds,in- cluding YCu_6 ,YCu_4 YCu_2 ,Yfu(973.103.K),were determined by means of electrode potential-time curves of the working electrode after potentiostatic *** results in- dicate that the potential-time method is simple and reliable.

关键词： Y-Cu system free energy of formation electrochemical alloying

Discovery of Permian island-arc basalts in the Cenxi area and the tectonic significance──A piece of evidence for the paleo-Tethyan tectonic belt in western Guangdong and eastern Guangxi

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1998年第21期43卷 1838-1842页

作者： ZHANG Boyou 1, ZHAO Zhenhua 1, SHI Manquan 1, YANG Shufeng 2 and CHEN Hanlin 2 1. guangzhou Institute of Geochemistry, Chinese Academy of sciences, guangzhou 510640,{3. 2. department of earth sciences, Zhejiang university, Hangzhou 3.0027,{3. guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China department of earth sciences Zhejiang University Hangzhou China

Cenxi Permian basalts are the late Palaeozoic island-arc type basalts first found in South china. REE and trace element characteristics and distribution patterns show that this volcanic formation, which has been isotopically dated at 261 MaB.P. by the 3.Ar/ 40Ar method, is of an active continental marginal island arc type, and that the tectonic environment at that time was an island-arc marginal sea or minor ocean basin related with the paleo-Tethyan tectonic belt in western Guangdong-eastern Guangxi.

关键词： spilite-keratophyre pillow lava Permian continental margin paleo-Tethyan evolution.

A FAST SEARCH METHOD BASED ON THE STATISTICAL PROPERTIES OF SIGNAL

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(china) 1992年第3期9卷 261-264页

作者：林韵肖自美 department of Electronics Zhongshan UniversityGuangzhou 510275

The concepts of ordered code-book and the priority of code-vector are proposedin this *** statistical properties of a signal are investigated through its coded *** results are presented which provide some insight into the statistical properties ofvector quantized *** on the given concepts and experimental results,a fast searchmethod for the vector quantization of correlated information sources,such as Gauss-Markovsources,is proposed and has shown its efficiency in simulation results.

关键词： Signal processing Exhaustive full search method Vector quantization Codevector Ordered code-book

Coexistence of Self-pumped Phase Conjugation and Mutual-pumped Phase Conjugation in Ce:BaTiO3

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Lasers 2000年第3期9卷 58-62页

作者： SHE Weilong (The State Key Laboratory of Ultrafast Laser Spectroscopy, zhongshan university, guangzhou 510275, china)Lee Wing-Kee ({3. of Physics and Materials Technology Research Center, The Chinese university of Hong Kong, Shatin, N. T., Hon 中山大学超快速激光光谱学国家重点实验室广东广州香港大学香港

Self-pumped phase conjugation(SPPC) and mutual-pumped phas e conjugation (MPPC) have been found to coexist in Ce∶BaTiO 3.by using two coherent beams of 514.5nm wavelength from an argon ion laser. Both phase conjugations are of the stimulated backscattering and four-wave mixing type. For 7/6 incident power ratio and 26 mW total incident power,the shortest phase conjugate mirror formation time is 10s . Phase conjugate reflectivity of one the beams can reach 70%,which is ～20% higher than the SPPC reflectivity using only one beam. When the total incident power is increased to 40 mW and the incident power ratio remains constant, a maximum phase conjugatate reflectivity of as much as 88% is obtained.

关键词： mutually pumped phase conjugation self-pumped phase conjugation stimulated backscattering four-wave mixing

RUTHENIUM　COORDINATION　COMPOUNDS　WITH　POLYPYRIDYL：Ⅰ　SYNTHESIS　AND　CHARACTERIZATION　OF　RUTHENIUM（Ⅱ）　MIXED　LIGAND　COORDINATON　COMPOUNDS　CONTAINING　PYRIDO［3.2－f］［1，7］PHENANTHROLINE

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1994年第5期5卷 409-412页

作者： Lei WANG Tian Xian ZENG Liang Nian JI (department of Chemistry, zhongshan university, guangzhou, {3.)

A series of new coordination compounds RuL2pdphen(2+),where pdphen is the planar ligand pyrido [3. 2-f] [1, 7] phenanthroline, L=2, 2'-bipyridine,phenanthroline, 2, 9-dimetbyl-phenanthroline and 5-nitro-phenanthroline,were prepared and characterized by elemental analyses,UV-visidle absorption,emission and IR spectra. Their electrochemical propetties were studied by cyclic voltammetry.

关键词：

Miocene Pliocene planktonic foraminiferal biostratigraphy of the Pearl River Mouth Basin,northern South china Sea

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2012年第1期1卷 43-56页

作者： Liu Chunlian 1,2,,Huang Yi 1,Wu Jie 1,Qin Guoquan 3.Yang Tingting 1,2,Xia Lianze 1,Zhang Suqing 1 1.department of earth sciences,Sun Yat-Sen {3.,guangzhou 510275,china 2.Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes,guangzhou 510275,china 3.Nanhai East Company of china National Offshore Oil Corporation,guangzhou 510240,china department of earth sciences Sun Yat-Sen University Guangzhou 510275 China Guangdong Provincial Key Laboratory of Mineral Resources & Geological Processes Guangzhou 510275 China Nanhai East Company of china National Offshore Oil Corporation Guangzhou 510240 China

The present study deals with the planktonic foraminiferal biostratigraphy of the Miocene-Pliocene sequence of three petroleum exploration wells (BY7-1-1,KP6-1-1 and KP91-1) in the Pearl River Mouth Basin (PRMB).In general,the three wells contain a fairly well-preserved,abundant foraminiferal *** proposed planktonic foraminiferal zonation follows the scheme updated by Wade et al.(2011).Nineteen planktonic foraminiferal zones have been recognized,14 zones (zones M1-M14) for the Miocene and 5 zones (zones PL1-PL5) for the *** zonation is correlated with previously published biostratigraphic subdivisions of the Neogene succession in the PRMB and with international foraminiferal *** zonal boundaries are mostly defined by the last appearance datum of zonal taxa of planktonic foraminifera,which is more reliable than the FAD (first appearance datum) events for ditch cutting *** in the coiling of Globorotalia menardii (s.l.) are also used to define the zonal boundaries,where no LADs (last appearance datum) are *** Fohsella fohsi group,comprising useful taxa for delimiting zonal boundaries of the middle Miocene in other areas,has a poor record within the Pearl River Mouth Basin due to unfavorable ecological conditions,and cannot be used for the studied *** from the previously reported zonal scheme for the PRMB,the present zonation is based on correlation with the current standard planktonic foraminiferal zonation,with calibrated absolute ages.

关键词： Planktonic foraminifera zonation Neogene Pearl River Mouth Basin

Southeastern extension of the Red River fault zone (RRFZ) and its tectonic evolution significance in western South china Sea

在线全文

学校读者我要写书评

暂无评论

Science china earth sciences 2006年第8期49卷 839-850页

作者： LIU Baoming1,2,3. XIA Bin1, LI Xuxuan1,3. ZHANG Minqiang1,3. NIU Binhua2, ZHONG Lifeng1, JIN Qinghuan1,4 & JI Shaocheng1,5 1. Key Laboratory of Marginal Sea Geology and Resources, Chinese Academy of sciences,guangzhou 510640, china 2. china university of Geosciences (Beijing), Beijing 100083. china 3. Research Center of Science & Technology department, CNOOC, Beijing 100027, china 4. guangzhou Marine Geological Survey, Ministry of Land & Resources, guangzhou 510075, china 5. Ecole Polytechnique Montreal, H3.3.7, Canada 1. Key Laboratory of Marginal Sea Geology and Resources Chinese Academy of Sciences Guangzhou 510640 China 2. china university of Geosciences (Beijing) Beijing 100083 China 3. Research Center of Science & Technology department CNOOC Beijing 100027 China 4. guangzhou Marine Geological Survey Ministry of Land & Resources Guangzhou 510075 China 5. Ecole Polytechnique Montreal H3C3A7 Canada

Recent geophysical surveys and basin modeling suggest that the No.1 fault in the Ying- gehai basin (YGHB) is the seaward elongation of the Red River fault zone (RRFZ) in the South china Sea (SCS). The RRFZ, which separates the South china and Indochina block, extends first along the Yuedong fault, offshore of Vietnam, and then continues southward and breaks off into two branches: the Lupar fault and the Tinjia fault. The southern extension of the Lupar fault dies out beneath the NW Borneo while the Tinjia fault extends southeast and reaches the Brunei-Sabah area. According to the gravity and geomagnetic data, and the tectonic evolution of the basins, there are different evolution histories between the Wan’an basin (WAB) and the basins in the Nansha block. The Tinjia fault may be the boundary between the Balingian block and the Nansha block. Hence, the line linking the Yue- dong fault and the Tinjia fault, which both are continental margin faults and strike-slip ones in the geological evolution histories, constitute the boundary between the Indochina and Nansha block. The Lupar fault, in contrast, is an intraplate fault within the Indochina block. The results provide new hints for reconstructing the tectonic evolution history of the RRFZ and the opening of the SCS, and also a framework for hydrocarbon prospecting in the region.

关键词： Red River fault zone, tectonic evolution, fault, extension, western South china Sea.