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Response to“Discussion on the systematic position of the Early Cambrian priapulomorph worms”

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science Bulletin 2006年第2期51卷 250-256页

作者： HAN Jian1 & HU Shixue2.1. department of Geology and Key Laboratory for Continental Dynam- ics of the Education Ministry, Northwest university, Xi’an 710069,{2. 2. yunnan Geological Institute, kunming 650011,{2. department of Geology and Key Laboratory for Continental Dynamics of the Education Ministry Northwest University Xi’an China yunnan Geological Institute Kunming China

Due to the combination of complex states of preservation and taphonomies inChengjiang fossils, Huang et al.) expressed different opinions to those of Han et al.) on themorphology and systematic position of the fossil priapulomorph worms (Priapulomorpha) based on theiradditional materials. These diverse opinions are critical in any investigation of the diversity ofthe Introverta in the Cambrian explosion. However, some of their ideas need to be discussed infurther detail.

关键词： Response to Discussion on the systematic position of the Early Cambrian priapulomorph worms

CYCLES CONTAINING MANY VERTICES OF SUBSETS IN GRAPHS WITH LARGE DEGREE SUMS AND NEIGHBORHOOD UNIONS

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Systems science and Mathematical sciences 2000年第4期13卷 432-445页

作者： LI Jianping (Institute of Mathematics and department of Mathematics, yunnan university,{2., china) 云南大学数学所云南昆明 650091

Let G be a graph of order n and X V(G). G is called X-cyclable if G has an X-cycle, i.e., a cycle containing all vertices of X. Define the parameters a(X) = max{|S| S is an independent vertex set in G[X] induced by X}, σk(X) = min{∑ki=1dG(x.i| {x1, x1…, xk} is an independent vertex set in G[X]} and NCk(X) = min{|∪ki=1 NG(xi)| | {x1, x2.,xk} is an independent vertex set in G[X] }. Our main result is as follows: If G is a 1-tough graph and X V(G) with σ3(X)≥ n, then for every integer t ≥ 1, G has a cycle C containing at least min{|X|, (2.X| - n + 3δ + 1 - t), |X| + NCt(X) - a(X)} venices of X, where δ(X) = [σ3(X)]. This result further extends previous results in H.J. Broersma et al. in terms of X-cyclability. We also obtain that if G is a 1-tough graph with σ3 (X) ≥ n, then for every integer t ≥ 1, G has a cycle containing at least min{|X|, (4|X|- 2.+4δ(X) + 1 - 2.), NCt (X) +NCt (X)} vertices of X, where NCt (X) = min{|N(I) ∩X|| I is an independent set of t vertices of X}. Analogous results are established for 2.connected graphs.

关键词： (X-)longest cycle (X-)dominating cycle hamiltonian graph vertex degree large degree sums neighborhood unions.

A possible mode of the specific recognition of nucleic acids by proteins

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Chinese science Bulletin 2001年第11期46卷 930-934页

作者： LI Xuqing & LIU Ciquandepartment of Computer science, {2. university of science and Technology, {2. 650041, china Laboratory of Cellular and Molecular Evolution, {2. Institute of Zoology, Chinese Academy of sciences, {2. 6502.3, china yunnan Observatory, Chinese Academy of sciences, {2. 650011, china 4. Modern Biological Center, yunnan university, kunming 650091, china department of Computer science Kunming University of Science and Technology Kunming China yunnan Observatory Chinese Academy of Sciences Kunming China Laboratory of Cellular and Molecular Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming China Modern Biological Center Yunnan University Kunming China

Seven sets of protein target sites, which occur in several gene promoters, have been analyzed. The results suggest that there is a possible mode of specific recognition of double-helical nucleic acids by proteins. This recognition mode is related to a special topological property of double-helical DNA, which is termed base spatial pattern (BSP) of DNA segment. BSP is the spatial topological property determined only by the spatial arrangement of the bases on double-helical DNA segment.

关键词： protein nucleic acids recognition base spatial pattern (BSP) target sites.

Finite Dimension of Global Attractor of Nonlinear Strain Waves in Elastic Waveguides

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Communications in Nonlinear science and Numerical Simulation 1998年第3期3卷 173-176页

作者： Dacai MA and Murong JIANG(department of Mathematics, Shangrao Teacher’s College, Shangrao 334000,china)(department of Mathematics, yunnan university, kunming 650091, china)E-mail: jemail@*** department of Mathematics Shangrao Teacher's College Shangrao 334000 China department of Mathematics Yunnan University Kunming 650091 China

Consider herein are the finite dimension of global attractor of nonlinearstrain waves in elastic waveguides. By constructing two appropriate bounded coerciveguadratic forms and analysis of evolution of volume in E1 sp... 详细信息

关键词： strain wave attractor Hausdorff and fractal dimensions

LOCAL INFLUENCE IN DISCRIMINANT ANALYSIS

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Systems science and Mathematical sciences 1995年第1期8卷 27-36页

作者： WANG Xueren REN Shiquan SHI Lei (department of Statistics, yunnan university,{2., china) 云南大学统计系云南昆明

ＬＯＣＡＬＩＮＦＬＵＥＮＣＥＩＮＤＩＳＣＲＩＭＩＮＡＮＴＡＮＡＬＹＳＩＳＷＡＮＧＸｕｅｒｅｎ；ＲＥＮＳｈｉｑｕａｎ；ＳＨＩＬｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＳｔａｔｉｓｔｉｃｓ，ＹｕｎｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｋｕｎ... 详细信息

ＬＯＣＡＬＩＮＦＬＵＥＮＣＥＩＮＤＩＳＣＲＩＭＩＮＡＮＴＡＮＡＬＹＳＩＳＷＡＮＧＸｕｅｒｅｎ；ＲＥＮＳｈｉｑｕａｎ；ＳＨＩＬｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＳｔａｔｉｓｔｉｃｓ，ＹｕｎｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｋｕｎｍｉｎｇ６５００９１，Ｃｈｉｎａ）...

关键词： Discriminant analysis generalized cook statistic perturbation scheme local influence.

Finite Dimensional Behavior of Global Attractors for Weakly Damping Ginzburg-Landau Equations Coupling with BBM Equations

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Communications in Nonlinear science and Numerical Simulation 1998年第1期3卷 10-14页

作者： Boling GUO * and Murong JIANG + *(Institute of Applied Physics and Computational Mathematics,Beijing,100088,china) +(department of Mathematics,{2. university,kunming 650091,china) E mail:guobl@*** Inst. Appl. Phys. and Compl. Math. Beijing 100088 China department of Mathematics Yunnan University Kunming 650091 China

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｉｓｐａｐｅｒｗｅａｒｅｃｏｎｃｅｒｎｅｄｗｉｔｈｔｈｅｌｏｎｇｔｉｍｅｂｅｈａｖｉｏｒｏｆｓｏｌｕｔｉｏｎｓｏｆｔｈｅｆｏｌｏｗｉｎｇｐｅｒｉｏｄｉｃｉｎｉｔｉａｌｖａｌｕｅｐｒｏ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｉｓｐａｐｅｒｗｅａｒｅｃｏｎｃｅｒｎｅｄｗｉｔｈｔｈｅｌｏｎｇｔｉｍｅｂｅｈａｖｉｏｒｏｆｓｏｌｕｔｉｏｎｓｏｆｔｈｅｆｏｌｏｗｉｎｇｐｅｒｉｏｄｉｃｉｎｉｔｉａｌｖａｌｕｅｐｒｏｂｌｅｍｆｏｒｔｈｅｓｙｓｔｅｍｏ...

关键词： dimension attractor Ginzburg Landau equation couped BBM equationIntroduction

Dielectric polymer grafted electrodes enhanced aqueous supercapacitors

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Nano Research 2024年第3期17卷 1525-1534页

作者： Shian Dong kunming Shi Jie Chen Yingke Zhu Hongfei Li Weihang Gao Zhenli Xu Qinglei Liu Xingyi Huang Shanghai Key Laboratory of Electrical Insulation and Thermal Aging Department of Polymer Science and EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China School of Mathematical sciences Institute of Natural Sciences and MOE−LSCShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China

Supercapacitors(SCs)have become increasingly important in electrical energy storage and delivery owing to their high power densities and long *** SCs are promising for large-scale engineering applications because of their low cost and ***,the low operating voltage and low energy density of aqueous SCs severely limit their practical *** this study,a nanoscale dielectric layer is grafted onto a graphene electrode to achieve both a high operating voltage and enhanced *** with an SC without dielectric grafting,a dielectric-enhanced SC(DESC)shows a higher capacitance by 2.00%.The mechanism of the capacitance enhancement can be attributed to three factors:the dielectric polarization,the ions desolvation by the dielectric,and the enhanced quantum capacitance from charge transfer and ion adsorption in the polymer *** addition,a 2.5 V pouch DESC with a 1 M KCl electrolyte is confirmed to cycle up to 50,000 times with a capacitance retention of 87.5%.The DESC presents the optimal electrochemical properties after it is grafted with a 5 nm dielectric *** study provides new insights into the design of high-voltage and high-energy-density aqueous SCs.

关键词： supercapacitors dielectric polymer high voltage capacitance enhancement

Abrupt climate change and collapse of ancient civilizations at 2.00BC-2.00BC

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Progress in Natural science:Materials International 2005年第10期15卷 46-52页

作者： WANG Shaowu (department of atmospheric {2., School of Physics, Peking university, Beijing 100871, china) department of atmospheric {2. School of Physics Peking University Beijing 100871 China

Plentiful evidence of historical, archaeological and palaeoclimatic studies proved that an abrupt change from wetter to drier climate occurred over the Nile Valley,the Mesopotamia, the Indus Valley and Huanghe River Valley at 2.00BC-2.00BC. The abrupt change was developed based on the general lowering of temperature in the middle latitudes, and was a strong cold event since the beginning of the Megathermal (8.5-3.0 kaBP). Collapse of Nile civilization appeared at the First Intermediate Period (2.81BC-2.40BC). Civilization of Mesopotamia began collapse following the disintegration of Akkadian Empire. This process lasted to the foundation of Babylon Kingdom from 2.00BC to 1900BC. Indus civilization abruptly fell off at 1800BC. A widespread alternation of archaeological cultures happened in china at ca. 2.00BC except only in its central part. Longsheng culture was replaced by the Erlitou culture, which is now acknowledged in china as Xia Culture. Foundation of Xia Dynasty at 2.70BC opened a new chapter in the development of Chinese civilization. Studies indicated that abrupt climate change may be caused by the weakening of the Thermohaline Circulation (THC).

关键词： 2.00BC-2.00BC abrupt climate change collapse of ancient civilization.

Reengineering Model of Supply Chain of Tea Industry in yunnan

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厦门大学学报（自然科学版） 2002年第S1期41卷 230-231页

作者： LI Yan-feng 1, JIANG Fa-kui 2.(1. Management School, Huazhong university of science and Technology, Wuhan 430074,{2. 2. department of Business Administration, yunnan university of Finance and Economics, kunming 6502.1,{2.)

yunnan university of finance and Trade recording to t he statistics of chain’s output of tea, yunnan province has entered the ranks of the larger ones of the production in china. yunnan’s tea industry has the natur al resources and the economic effects envied, on the orther hand, yunnan’s tea m arket has gradually become less and the economic effects have been poor. Through our comprehensive investigation and study, we consider that because the supply chain has seriously been disjointed among production, supply and sale of tea ind ustry in yunnan, the supply chain of yunnan’s tea industry need to be reorganize d for the promoting the development of yunnan’s tea industry. The essence of reengineering of yunnan’s tea industrial supply chain is to set u p the model of the trailed operation,to strengthen the strategic partnership man agement between the supply chain, to optimize the design of the supply chain and build up and improve the working mechanism for management of the tea industrial supply chain. The structure of yunnan’s model of tea industrial supply chain: the model of com mercial flow; the model of logistics flow; the model of information flow and the model of cash flow. The solutions and policies for the reorganization of yunnan’s tea industrial sup ply chain: planning, logistics and distribution and sales. Set up the supporting system of information technology. Build up the control system of production and *** the working mechanism of yunnan’s tea industrial supply chain. Implement the engineering of exporting yunnan’s tea into the markets of other p rovinces and foreign markets. Have many the channels that raise the funds of dev elopment for yunnan’s tea industry.

关键词： yunnan tea industry reengineering supply chain building model