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Exponential attractors of the nonlinear wave equations

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Chinese Science Bulletin 1998年第16期43卷 1331-1335页

作者： DAI Zhengde 1 and MA Dacai 2 1. department of mathematics, Yunnan University, Kunming 650031, china 2. department of mathematics, Shangrao teachers college, Shangrao 334000, china department of mathematics Yunnan University Kunming China department of mathematics Shangrao Teachers College Shangrao China

The (E, E)-type exponential attractors for the nonlinear wave equation were obtained by using the decomposition of operators and finite covering *** results solves the open problem of Eden et al.

关键词： nonlinearity wave equations exponential attractors.

ON THE ORDERING OF A CLASS OF HEXAGONAL CHAINS WITH RESPECT TO MERRIFIELD-SIMMONS INDEX

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Systems Science and Mathematical Sciences 2000年第2期13卷 219-224页

作者： ZHANG Lianzhu (department of mathematics, Zhangzhou teachers college, Zhangzhou, Fujian 363000, china) department of mathematics Zhangzhou Teachers College Zhangzhou Fujian 363000 China

In this paper, we give the ordering of single-corner hexagonal chains with respect to Merrifield-Simmons index. At the same time, the hexagonal chain with the second largest Merrifield-Simmons index is also determined.

关键词： Hexagonal system hexagonal chain single-corner chain linear chain independent set Merrifield-Simmons index.

Light People:*** D C Bradley(FRS)

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Light(Science & Applications) 2024年第9期13卷 1704-1719页

作者： Ruidong Xia Ying hu Key Laboratory for Organic Electronics&Information Displays(KLOEID) Jiangsu-Singapore Joint Research Center for Organic/Bio Electronics&Information DisplaysInstitute of Advanced Materials(IAM)Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing 210023China Executive Management college of CHN ENERGY North District of Future Science CityChangping DistrictNo.7 Binhe AvenueBeijing 102211China

Editorial,The invention of organic light emitting diodes(LEDs)led to enormous excitement in both academe and industry in the late 1980’***,large area solution processability,roll-to-roll printing,low cost,and environmentally friendly are some of the advantages of organic semiconductor materials,which brought a new horizon for *** with the achievement of organic solar cells,transistors,lasers,and amplifiers,this has demonstrated potential applications of organic semiconductors in displays,lighting,solar energy generation,electronics,sensing and imaging,and many aspects of *** an enlightened conversation with Light:Science&Applications,*** Bradley(FRS),a pioneer in the field,shared his deep insights on past,current,and future exciting developments of organic optoelectronic materials and *** particular,he expressed his opinion on the hot topics related to organic optoelectronics research and application,such as the relationship between organic and inorganic semiconductors and the challenge of electrically pumped organic *** a successful scientist,Donal has also been co-founder of several organic optoelectronics innovation companies and research centers and a long-term academic administrator serving as a Head of department,Centre Director,and Vice-Rector for Research at Imperial college,Head of the Mathematical,Physical,and Life Sciences Division at the University of Oxford,Vice-President for Research at King Abdullah University of Science and Technology and now Vice-President for Research and Innovation at NEOM U and Executive Director of the NEOM Education,Research and Innovation *** this interview,we also explore the major roles and events in Donal’s career experience from the invention of the first conjugated polymer LED in the world to the set-up of entrepreneurial companies,from Cambridge to Sheffield,Imperial college,and Oxford,from the UK to overseas,and from the establishment of the Cent

关键词： companies Director Bradley

Bloch constant of holomorphic mappings on the unit polydisk of C^n

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维普期刊数据库

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Science china mathematics 2008年第4期51卷 652-659页

作者： WANG JianFei~(1+) LIU TaiShun~2 1 college of mathematics and Physics Information Engineering Zhejiang Normal University Jinhua 321004,china 2 department of mathematics huzhou teachers college huzhou 313000 china college of mathematics and Physics Information Engineering Zhejiang Normal University Jinhua China department of mathematics Huzhou Teachers College Huzhou China

In this paper,we give a definition of Bloch mappings defined in the unit polydisk D^n, which generalizes the concept of Bloch functions defined in the unit disk *** is known that Bloch theorem fails unless we have some restrictive assumption on holomorphic mappings in several complex *** shall establish the corresponding distortion theorems for subfamiliesβ(K)andβ_(loc)(K) of Bloch mappings defined in the polydisk D^n,which extend the distortion theorems of Liu and Minda to higher *** an application,we obtain lower and upper bounds of Bloch constants for various subfamilies of Bloeh mappings defined in D^*** particular,our results reduce to the classical results of Ahlfors and Landau when n=1.

关键词： Bloch constant Bloch mapping univalent ball critical point Julia lemma locally biholomorphic mapping Landau constant

Paracrine function amplifies pro-tumor electrochemical signal within neuron-glioma synapses

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Science china(Life Sciences) 2024年第6期67卷 1318-1320页

作者： Yan hu Peishan hu Xiaozhong Peng Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE State Key Laboratory of BiotherapyWest China Second University HospitalSichuan UniversityChengdu 610041China Guangdong Institute of Gastroenterology Department of General SurgeryGuangdong Provincial Key Laboratory of Colorectal and Pelvic Floor DiseasesThe Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhou 510655China department of Molecular Biology and Biochemistry Institute of Basic Medical SciencesMedical Primate Research CenterNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100730China State Key Laboratory of Respiratory Health and Multimorbidity Institute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100730China Institute of Laboratory Animal Science Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

Neuronal activity plays a pivotal role in various physiological processes,including tissue development,homeostasis,and *** in recent years have improved our understanding of neuronal activity in brain cancers,such as glioblastoma(GBM)and diffuse midline gliomas(DMG),which are among the most prevalent and lethal cancers affecting children and ***,the neurons regulate brain cancers via two routes.

关键词： glioma homeostasis function

THE SChuR HARMONIC CONVEXITY FOR A CLASS OF SYMMETRIC FUNCTIONS

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Acta Mathematica Scientia 2010年第5期30卷 1501-1506页

作者：褚玉明孙天川 department of mathematics Huzhou Teachers College

In this article, we prove that the symmetric function Fn（x,r）=∑i1＋i2＋……in=r（x1（i1x2^i2……xn^in）1/r is Schur harmonic convex for x ∈ R＋n and r ∈N -=（1, 2, 3,...} As its applications, some analytic inequa... 详细信息

关键词： symmetric function Schur convex Schur harmonic convex

Research of Sports Major Students Management Model in colleges Based on humanism

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Research of Sports Major Students Management Model in Colleg...

IMPROVEMENTS IN THE TEACHING OF LISTENING

2011 4th IEEE International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Yao Bin-bin Physical Education department of anqing teachers college anqing china

With the social development and higher education reform, students of Anhui PE University have the complex ideas. They brought new management challenges, the traditional management concepts, methods and systems that were not suited to the current student management. To explore new method of management, this paper does a research through literature, expert interviews, questionnaires, statistics, comparative analysis and other methods for some students in physical education of 5 Anhui universities. This paper highlights "people-oriented" advancing with the times. In this paper, people-oriented management principles and details of the management combination with management are analyzed and summarized.

关键词： Sports major open management detailed management

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cnki会议

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Chinese Journal of Applied Linguistics 1999年第2期22卷 20-23页

作者： hu Meizhu anqing teachers’ college,Anhui

In teaching listening the teacher’s attention should go to training the students for listening inreal *** listening material and sound teaching procedures are two key-features of a good listen-ing class.

关键词：环场

SOME THEOREMS OF THE NORDHAUS-GADDUM CLASS

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Systems Science and Mathematical Sciences 1993年第3期6卷 239-244页

作者： WANG Zhijian department of mathematics, Suzhou Railway teachers college, Suzhou 215009, china

Let the chromatic number of G, the edge chromatic number of G and thetotal chromatic number of G be denoted by x（G）, x1（G） and x2（G）, respectively. Forany simple graph G of order p and its complement G, the following inequalities of theNordhaus-Gaddum class are obtained:（i）|2p1/2|-ε1≤x（G）+x1（G）≤2p-2 and 0≤x（G）·x1（G）≤（p-1）2 for p≥2,（ii）|2p1/2|+ε1≤x（G）+x2（G）≤2p-1 and 0≤x（G）·x2（G）≤p（p-1） for p≥3,（iii）p≤x1（G）+x2（G）≤2p-1 and 0≤x1（G）·x2（G）≤p（p-1） for p≥3,where ε1=0, if p1/2 is an odd integer, 1, otherwise,ε2=1, if p1/2 is an even integer, 0, otherwise,and [x] denotes the ceiling of x. We also show that these bounds are sharp for everypositive integer p.

关键词： Complementary graph chromatic number edge chromatic number total chromatic number theorem of Nordhaus-Gaddum class