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Development and application of ergodicity model with FRCM and FLAR for hydrological process

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Science china(Technological Sciences) 2009年第2期52卷 379-386页

作者： WANG HongRui1, FENG QiLei2, LIN Xin3 & ZENG WenYi4.1 College of Water Science, Key Laboratory for Water and Sediment Sciences of the Ministry of Education, beijing Normal University, beijing 100875, china 2 School of Science, beijing {4. of Education, beijing 100011, china 3 School of Mathematical Sciences, beijing Normal University, beijing 100875, china 4.College of Information Science and Technology, beijing Normal University, beijing 100875, china 1. College of Water Science Key Laboratory for Water and Sediment Sciences of the Ministry of Education Beijing Normal University Beijing 100875 China 2. School of Science Beijing Institute of Education Beijing 100011 China 3. School of Mathematical Sciences Beijing Normal University Beijing 100875 China 4. College of Information Science and Technology Beijing Normal University Beijing 100875 China

In this paper, a new ergodic property analysis model of hydrological process is proposed based on fuzzy-rough c-means clustering (FRCM), autocorrelogram, and fuzzy least absolute regression (FLAR). A precipitation time series (1951―2004. from Shanghai Hydrology Station is then analyzed with the model. The results show that the precipitation time series of April, May, June, and September has er-godic property. We conclude that in the long run, the precipitation of April, May, June, and September will not keep decreasing; it will converge to its mean value in some period.

关键词： hydrological process ergodic autocorrelogram fuzzy-rough c-means clustering fuzzy least absolute regression

Pairwise entanglement and local polarization of Heisenberg model

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Science china(Physics,Mechanics & Astronomy) 2008年第10期51卷 1515-1522页

作者： XI XiaoQiang1,2, ZHANG Tao3, YUE RuiHong3,4.& LIU WuMing2 1 Department of Applied Mathematics and Physics, Xi’an institute of Post and Telecommunications, Xi’an 710061, china 2 beijing National Laboratory for Condensed Matter Physics, institute of Physics, Chinese Academy of Sciences, beijing 100080, china 3 institute of Modern Physics, Northwest University, Xi’an 710069, china 4.Department of Physics, Ningbo University, Ningbo 315211, china Department of Applied Mathematics and Physics Xi’an Institute of Post and Telecommunications Xi’an 710061 China beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100080 China institute of Modern Physics Northwest University Xi’an 710069 China Department of Physics Ningbo University Ningbo 315211 China

The characteristics of pairwise entanglement and local polarization (LP) are dis-cussed by studying the ground state (states) of the Heisenberg XX model. The re-sults show that: the ground state (states) is (are) composed of the micro states with the minimal polarization (0 for even qubit and 1/2 for odd qubit); LP and the prob-ability of the micro state have an intimate relation, i.e. the stronger the LP, the smaller the probability, and the same LP corresponds to the same probability; the pairwise entanglement of the ground state is the biggest in all eigenvectors. It is found that the pairwise entanglement is decreased by the state degeneracy and the system size. The concurrence approaches a fixed value of about 0.34.2 (for odd-qubit chain) or 0.34.1 (for even-qubit chain) if the qubit number is large enough.

关键词： Heisenberg XX model local polarization pairwise entanglement

NONEQUILIBRIUM STATISTICAL THEORY OF FATIGUE FRACTURE (Ⅱ)——FROM MICROSCOPIC MECHANISM TO MACROSCOPIC PROPERTIES OF FATIGUE FRACTURE

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中国科学A辑(英文版) 1986年第12期29卷 1318-1333页

作者：邢修三 institute of atomic energy beijing

The stochastic evolution equation of microcracks is given. The microcrack density distribution function is obtained on the basis of dislocation mechanism. The fatigue fracture probability, reliability, σ_a-N curves,... 详细信息

关键词： fatigue deviation stochastic Probability dislocation quantities latter brittle hardening infinite

Narrow line Seyfert 1 galaxies: where are the broad line regions?

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Science china(Physics,Mechanics & Astronomy) 2010年第12期53卷 2307-2311,2339-2343页

作者： MAO WeiMing 1,2,3 , HU Chen 2 , WANG JianMin 2 , BIAN WeiHao 4., ZHANG Shu 2 & ZHAO Gang 1 1 Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, beijing 100012, china 2 Key Laboratory for Particle Astrophysics, institute of High energy Physics, Chinese Academy of Sciences, beijing 10004., china 3 Graduate University of the Chinese Academy of Sciences, beijing 10004., china 4.Department of Physics, Nanjing Normal University, Nanjing 210011, china 1. Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China2. Key Laboratory for Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China3. Graduate University of the Chinese Academy of Sciences Beijing 100049 China4. Department of Physics Nanjing Normal University Nanjing 210011 China

A sample consisting of 211 narrow line Seyfert 1 galaxies (NLS1s) with high quality spectra from the Sloan Digital Sky Survey (SDSS) is selected to explore where broad line regions are in these objects. We find that the Hβ profile can be fitted well by three (narrow, intermediate and broad) Gaussian components, and the FWHM ratios of the broad to the intermediate components hold a constant of 3.0 roughly for the entire sample. If the broad components originate from the region scaled by the well-determined Hβ reverberation mapping relation, we find that the intermediate components originate from the inner edge of the torus, which is scaled by dust K-band reverberation. We find that the IC and the BC are strongly linked dynamically, but the relation of their covering factors is much more relaxed, implying that both regions are clumpy.

关键词： black hole physics galaxies: evolution quasars: general

Implications of micro-compositions of garnet and biotite from high-grade meta-pelites

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Progress in Natural Science:Materials International 2006年第2期16卷 209-214页

作者： ZHOU Xiwen, WEI Chunjing, and ZHANG Shangkun ( institute of Geology, CAGS, beijing 100037, china School of Earth and Space Sciences, Peking University, beijing 100871, china china University of Geo-Sciences, beijing 100083, china) institute of Geology CAGS Beijing 100037 China School of Earth and Space Sciences Peking University Beijing 100871 China china University of Geo-Sciences Beijing 100083 China

Based on detailed studies on the compositional zoning of garnet and biotite in pelitic rocks from the Jingshan group of granulite facies in north Jiaodong, P-T pseudosections with isopleths of Fe/(Fe + Mg) in garnet and biotite were calculated in the KF-MASH system for two representative rocks of sillimanite-garnet-cordierite-biotite gneiss ( Vbi/ Vg>1 ) and sillimanite-garnet gneiss (Vbi/ Vg 1 can nearly preserve their peak compositions, and biotites in garnet-rich rocks with Vbi/Vg<0. 2 cannot preserve their peak compositions due to the influence of grain-boundary fluid.

关键词： high-grade meta-pelites THERMOCALC P-T pseudosection peak compositions of garnet and biotite.

Designing appropriate heat treatment temperature for LaNi_(3.8)Al_(0.75)Mn_(0.4.) alloy

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Rare Metals 2006年第z1期25卷 243-246页

作者： JIANG Yuwei LIU Xiaopeng JIANG Lijun WANG Shumao YANG Hongguang institute for energy Material and Technology General Research Institute for Non-Ferrous MetalBeijing 100088China china institute of atomic energy Beijing 102413China

The effect of heat treatment on microstructure,equilibrium hydrogen sorption pressure and plateau slope of LaNi_(3.8)Al_(0.75)Mn_(0.4.) alloy was investigated.X-ray diffraction(XRD)analysis indicates that annealed alloys have single phase and the same hexagonal structure as that of LaNi_(5) alloy(CaCu_(5) type,P6/mmm).The cell parameters of alloys fluctuate with the increasing annealing *** equilibrium hydrogen pressure and plateau slope are a parabola function with annealing temperature for LaNi_(3.8)Al_(0.75)Mn_(0.4.) *** this relationship,an appropriate heat treatment temperature for LaNi_(3.8)Al_(0.75)Mn_(0.4.) alloy is determined to about 1220-1230 K by mathematic simulation ***,the maximum hydrogen storage capacity of alloys does not affected by the annealing temperature.

关键词： La-Ni-Al alloy heat treatment hydrogen storage alloy plateau slope

Comparisons of Limit Analysis Solutions and Random Search Solutions on Slope Critical Slip Surface

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Communications in Nonlinear Science and Numerical Simulation 1998年第2期3卷 14-19页

作者： Jianfeng WANG (LNM, institute of Mechanics, CAS, beijing 100080, china) LNM Institute of Mechanics CAS Beijing 100080 China

ＩｎｔｒｏｄｕｃｔｉｏｎＤｅｓｐｉｔｅｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｅｌａｓｔｉｃｐｌａｓｔｉｃｖｉｓｃｏｕｓｎｕｍｅｒｉｃａｌｍｅｔｈｏｄｓｆｏｒｔｈｅａｎａｌｙｓｉｓｏｆｓｌｏｐｅｓ，ｔｒａｄｉｔｉｏｎａｌ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＤｅｓｐｉｔｅｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｅｌａｓｔｉｃｐｌａｓｔｉｃｖｉｓｃｏｕｓｎｕｍｅｒｉｃａｌｍｅｔｈｏｄｓｆｏｒｔｈｅａｎａｌｙｓｉｓｏｆｓｌｏｐｅｓ，ｔｒａｄｉｔｉｏｎａｌｔｅｃｈｎｉｑｕｅｓｂａｓｅｄｏｎ...

关键词： limit state analysis upper bound theorem random searching slip surface slope stability plasticity

Role of inositol 1,4.5-trisphosphate receptors in α1-adrenergic receptorinduced cardiomyocyte hypertrophy

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Acta Pharmacologica Sinica 2006年第7期27卷 895-900页

作者： Da-li LUO~(2,3,5) Jian GAO~2 Xiao-mei LAN~3 Gang WANG~4.Sheng WEI~4.Rui-ping XIAO~4.Qi-de HAN~32 Department of Pharmacology,School of Chemical Biology & Pharmaceutical Sciences,Capital University of Medical Sciences,beijing 100069,china 3 institute of Cardiovascular Science at Health Science Center,Peking University beijing 100083,china 4.institute of Molecular Medicine and College of Life Science,Peking University,beijing 100871,china Department of Pharmacology School of Chemical Biology & Pharmaceutical Sciences Capital University of Medical Sciences Beijing 100069 China institute of Cardiovascular Science at Health Science Center Peking University Beijing 100083 China institute of Molecular Medicine and College of Life Science Peking University Beijing 100871 China

Aim:Intracellular Ca2+plays pivotal roles in diverse cellular functions,includinggene transcription that underlies cardiac remodeling during stress ***,the role of inositol 1,4.5-trisphosphate receptors（IP3Rs）in the media-tion of cardiac intracellular Ca2+and hypertrophic growth remains *** with neonatal rat ventricular myocytes suggests that activation of IP3Rsmay be linked to α1adrenergic receptor（α1AR）increased stereotyped Ca2+sparkoccurrence and global Ca2+***,we hypothesized that Ca2+releasethrough IP3Rs was necessary for α1AR-stimulated cardiac ***:We used myoinositol 1,4.5-trisphosphate hexakis（butyryloxymethyl）ester（IP3BM）,a membrane-permeant ester of IP3,to activate IP3Rs directly,and Fluo 4.AM tomeasure intracellular Ca2+***:IP3BM(10μmol·L-1)mimicked theeffects of phenylephrine,a selective agonist of α1AR,in increments in local Ca2+spark release（especially in the perinuclear area）and global Ca2+*** importantly,IP3R inhibitors,2-aminoethoxydiphenyl borateand Xestospongin C,abolished the IP3BM-induced Ca2+responses,and signifi-cantly suppressed α1AR-induced cardiomyocyte hypertrophy assayed by cellsize,[3H]leucine incorporation and atrial natriuretic factor gene expression,dur-ing sustained（4. h）phenylephrine ***:These results,therefore,provide cellular mechanisms that link IP3R signaling to α1AR-stimulatedgene expression and cardiomyocyte hypertrophy.

关键词： inositol 1,4.5-trisphosphate receptors Ca2+sparks α1 adrenergic stimulation cardiac hypertrophy

BOUNDED SOLUTIONS AND PERIODIC SOLUTIONS OF VISCOUS POLYTROPIC GAS EQUATIONS

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Chinese Annals of Mathematics,Series B 1997年第1期18卷 89-98页

作者： LUO TAO institute of Mathematics, Academia Sinica,beijing 100080, china Department of Applied Mathematics Tsinghua University Beijing 100084 China

A piston problem of viscous polytropic gas equations is discussed. It is shown that the global solution is bounded uniformly in time if the piston motion is bounded and that if the piston motion is periodic in time, t... 详细信息

关键词： Viscous polytropic gas Uniformly bounded solution Periodic solution