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On conformal measures for infinitely renormalizable quadratic polynomials

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Science china Mathematics 2005年第10期48卷 1411-1420页

作者： HUANG Zhiyong~1 JIANG Yunping~(2.3) & WANG Yuefei~3 1. school of Information,Renmin university of {2.,Beijing 100872.{2. 2. Department of Mathematics,Queens College,City university of New York,NY 11367,USA Department of Mathematics,graduate school,City university of New York,New York,NY 10016,USA 3. Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100080,{2. school of Information Renmin University of China Beijing China Department of Mathematics Queens College City University of New York NY USA Department of Mathematics Graduate School City University of New York New York USA Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China

We study a conformal measure for an infinitely renormalizable quadratic polynomial. We prove that the conformal measure is ergodic if the polynomial is unbranched and has complex bounds. The main technique we use in t... 详细信息

关键词： Julia set, conformal measure, three-dimensional puzzle, infinitely renormalizable quadratic polynomial.

Power functions with low uniformity on odd characteristic finite fields

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Science china Mathematics 2010年第8期53卷 1931-1940页

作者： ZHA ZhengBang 1,3 & WANG XueLi 2.1 school of Mathematical Sciences,Luoyang Normal university,Luoyang 47102.,{2. 2.school of Mathematical Sciences,South {2. Normal university,Guangzhou 510631,{2. 3 State Key Laboratory of Information Security,graduate university of Chinese Academy of Sciences,Beijing 100049,{2. school of Mathematical Sciences Luoyang Normal University Luoyang China State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences Beijing China school of Mathematical Sciences South China Normal University Guangzhou China

In this paper,we give some new low differential uniformity of some power functions defined on finite fields with odd *** corollaries of the uniformity,we obtain two families of almost perfect nonlinear functions in GF... 详细信息

关键词： almost perfect nonlinear function differential uniform function finite field

Singchia and Gunnaria,two new genera of Orchidaceae

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Journal of Systematics and Evolution 2009年第6期47卷 599-604页

作者： ~(1,2.3)Zhong-Jian LIU~* ~1Li-Jun CHEN 1(The National Orchid Conservation Center of china(The Orchid Conservation & Research Center of Shenzhen),Shenzhen 518114,china) 2.The Center for Biotechnology and BioMedicine,{2. school at Shenzhen,Tsinghua university,Shenzhen 518055,china) 3(College of Forestry,South china Agricultural university,Guangzhou 510642.china) (The National Orchid Conservation Center of china (The Orchid Conservation & Research Center of Shenzhen) Shenzhen 518114 China) (The Center for Biotechnology and BioMedicine Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China) (College of Forestry South China Agricultural University Guangzhou 510642 China)

Singchia *** & ***,a new orchid genus,is established based on the new species *** *** & *** found in southeast Yunnan,*** new genus is related to Pteroceras,from which it differs by having a lip with its basal margins immovably adnate to the lower part of the pendent column foot,a thin-walled spur,and very unequally and deeply split pollinia,each with a distinct *** addition to a discussion on Ascocentrum pusillum,a species of questionable placement,another new genus,namely Gunnaria *** ex *** & ***,is set up and a new combination,namely ***(Aver.) *** & ***,is *** new genus Gunnaria differs from its ally Ascocentrum by having a cross-shaped pollinarium,sulcate or split pollinia, each with a distinct caudicle attached to a common linear stipe much longer than either pollinia or viscidium,and strongly incurved side lobes of the lip.

关键词： china G.pusilla(Aver.) Z.J.Liu & L.J.Chen Gunnaria S.C.Chen ex Z.J.Liu & L.J.Chen new combination new genera new species S.malipoensis Z.J.Liu & L.J.Chen Singchia Z.J.Liu & L.J.Chen Yunnan

A tentative study for the prediction of the CME related geomagnetic storm intensity and its transit time

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Science china(Technological Sciences) 2005年第6期48卷 648-668页

作者： ZHAO Xinhua1,2.& FENG Xueshang1,3 1. SIGMA Weather Group, Key Laboratory of Space Weather, Center for Space Science and Applied Re-search, Chinese Academy of Sciences, Beijing 100080, china 2. graduate {2. of the Chinese Academy of Sciences, Beijing 100039, china 3. {2. of Geophysics and Geoinformation Systems, china university of Geosciences, Beijing 100083, china SIGMA Weather Group Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing China graduate school of the Chinese Academy of Sciences Beijing China school of Geophysics and Geoinformation Systems China University of Geosciences Beijing China

Using 80 CME-ICME events during 1997.1―2.02.9, based on the eruptive source locations of CMEs and solar magnetic field observation at the photosphere, a current sheet magnetic coordinate (CMC) system is established in order to study the propagation of CME and its geoeffectiveness. In context of this coordinate system, the effect of the eruptive source location and the form of heliospheric current sheet (HCS) at the eruptive time of CME on the geomagnetic storm intensity caused by CME and the CME’s transit time at the Earth is investigated in detail. Our preliminary conclusions are: 1) The geomagnetic disturbances caused by CMEs tend to have the so-called “same side-opposite side effect”, i.e. CMEs erupt from the same side of the HCS as the earth would be more likely to arrive at the earth and the geomagnetic disturbances associated with them tend to be of larger magnitude, while CMEs erupting from the opposite side would arrive at the earth with less probability and the corresponding geomagnetic disturbance magnitudes would be relatively weaker. 2. The angular separation between the earth and the HCS affect the corresponding disturbance intensity. That is, when our earth is located near the HCS, adverse space weather events occur most probably. 3) The erupting location of the CME and its nearby form of HCS will also affect its arrival time at the earth. According to these conclusions, in this context of CMC coordinate we arrive at new prediction method for estimating the geomagnetic storm intensity (Dstmin) caused by CMEs and their transit times. The application of the empirical model for 80 CME-ICME events shows that the relative error of Dst is within 30% for 59% events with Dstmin≤?50 nT, while the averaged absolute error of transit time is lower than 10 h for all events.

关键词： coronal mass ejections, current sheet magnetic coordinate system, geomagnetic storm intensity, transit time, prediction method.

The deep thermal characteristic of continental margin of the northern South china Sea

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Chinese Science Bulletin 2000年第18期45卷 1717-1722页

作者： ZHANG Jian & WANG Jiyang1. graduate school, {2. of Science and Technology of china, Chinese Academy of Sciences, Beijing 100039, china 2. Institute of Geology, Chinese Academy of Sciences, Beijing 10002., china graduate school University of Science and Technology of China Chinese Academy of Sciences Beijing China Institute of Geology Chinese Academy of Sciences Beijing China

Heat flow plays an important role in the study ot thermal structure and thermal evolutionof continental margin of the northern South china Sea. The analysis of heat flow value shows that margin heat flow in the northern South china Sea is relatively high setting, but the percentage of crustal heat flow is lower than 35% in terrestrial heat flow. The terrestrial heat flow exhibited a current of rise from the Northern Continental Margin to the Southern Central Basin. However, the proportion of crustal heat flow in terrestrial heat flow slowly dropped down in the same direction. It is suggested that the main factor causing high heat flow setting is the moving up of hot material from asthenosphere.

关键词： margin of northern South china Sea terrestrial heat flow thermal structures.

A NOTE ON THE CONSISTENCY OF LS ESTIMATES IN LINEAR MODELS

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Chinese Annals of Mathematics,Series B 2001年第4期22卷 471-474页

作者： CHEN XIRU The graduate school at Beijing, {2. of Science and Technology of china, Beijing 100039, china. The graduate school at Beijing University of Science and Technology of China Beijing 100039 China

It is well known that when the random errors are iid. with finite variance, the week and the strong consiStency of LS estimate of multiple regression coefficients are equivalent. This note, by constructing a counter-example, shows that this equivalence no longer holds true in case that the random errors possess only the r-th moment with 1≤5 T ＜ 2.

关键词： Linear regression model Consistency LS estimate

Hedychium menghaiense (Zingiberaceae),a new species from Yunnan,china

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Journal of Systematics and Evolution 2010年第2期48卷 146-151页

作者： 1,2.3Xiu HU 1Nian LIU 1(Zhongkai university of Agriculture and Engineering,Guangzhou 5102.5,china) 2.South china Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,china) 3(graduate school of Chinese Academy of Sciences,Beijing 100049,china) (Zhongkai university of Agriculture and Engineering Guangzhou 510225 China) (South china Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China) (graduate school of Chinese Academy of Sciences Beijing 100049 China)

Hedychium menghaiense *** & ***,a new species of the Zingiberaceae from Yunnan Province,china,is described and *** new species is currently known only from its type locality,Nannuoshan Mountain,Menghai County,growing under evergreen broad-leaved forests at altitudes of 1400-1700 *** is similar to Hedychium forrestii Diels,but differs in its narrower and emarginate labellum folded inwards lengthwise,narrower staminodes,and scarlet *** recognition of the new species is supported by the results from analysis of sequence-related amplified polymorphism markers.

关键词： Hedychium Hedychium menghaiense X.Hu & N.Liu new species SRAP markers Zingiberaceae

Possible Role of Histone H1 in the Regulation of Furin-dependent Proprotein Processing

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Acta Biochimica et Biophysica Sinica 2007年第3期39卷 173-180页

作者： Jinbo HAN~1 Jianxin GU~2.Chengwu CHI~(1,3*) 1 Institute of Biochemistry and Cell Biology,Chinese Academy of Sciences,graduate school of the Chinese Academy of Sciences,Shanghai 2.0031,{2. 2.Gene Research Center,Medical Center of Fudan university,Shanghai 2.0032.{2. 3 Institute of Protein Research,Tongji university,Shanghai 2.0092.{2. Institute of Biochemistry and Cell Biology Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shanghai China.

Histone H1 and its C-terminal lysine rich fragments were recently found to be potent inhibitorsof furin,a mammalian proprotein ***,its role in the regulation of furin-dependent proproteinprocessing remains *** we report that histone H1 efficiently blocks furin-dependent pro-yonWillebrand factor（pro-vWF）processing in a dose-dependent *** and immunof-luorescence studies confirmed that histone H1 could interact with furin,and the interaction mainly took placeon the cell *** noted that histone H1 was released from cells undergoing necrosis and apoptosisinduced by *** findings suggested that histone H1 might be involved in extracellular and/or intracellu-lar furin regulation.

关键词： furin histone H1 pro-vWF proprotein processing

Interannual variability of Antarctic Oscillation and its influence on East Asian climate during boreal winter and spring

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Science china Earth Sciences 2006年第5期49卷 554-560页

作者： FAN Ke1,2.3 & WANG Huijun2.1. Nansen-Zhu International Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 10002., china 2. Department of Atmospheric Science, Yunnan university, Kunming 650091, china 3. graduate university of the Chinese Academy of Sciences, Beijing 100049, china Nansen-Zhu International Research Center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Department of Atmospheric Science Yunnan University Kunming China graduate university of the Chinese Academy of Sciences Beijing China

The interannual variability of Antarctic Oscillation (AAO) and its influence on East Asian climate during both boreal winter and spring are addressed. The results show that the positive AAO anomaly decreases the cold activity over East Asia during both boreal winter and spring. AAO-related barotropic meridional teleconnection from Antarctic to Arctic is found through analysis of mean me- ridional circulations. This meridional teleconnection is remarkable over Eurasia during boreal winter and over the Pacific Ocean during boreal spring. The results also show that zonal mean zonal wind at high latitudes in Southern Hemisphere has well positive correlation with that of Eurasia during boreal winter and has negative correlation with Pacific North American teleconnection (PNA) during boreal spring, which again display the meridional teleconnection. Thus, local meridional teleconnection is a possible linkage for interaction of circulations at mid-high latitudes between both hemispheres.

关键词： Antarctic Oscillation, Eurasian west wind, meridional teleconnection, mean meridional circulation.