检索结果-南通市图书馆

L_p-mixed intersection bodies

在线全文

cnki会议

学校读者我要写书评

暂无评论

science china mathematics 2008年第12期51卷 2172-2188页

作者： zhao ChangJian department of Information and mathematics sciences, college of science, china jiliang university, hangzhou 310018, china department of Information and mathematics sciences College of Science China Jiliang University Hangzhou 310018 China

In this paper the author first introduce a new concept of Lp-dual mixed volumes of star bodies which extends the classical dual mixed volumes. Moreover, we extend the notions of Lp- intersection body to Lp-mixed intersection body. Inequalities for Lp-dual mixed volumes of Lp-mixed intersection bodies are established and the results established here provide new estimates for these type of inequalities.

关键词： L p -dual mixed volumes L p -intersection bodies L p -mixed intersection bodies 52A40

维普期刊数据库

Lp-dual Quermassintegral sums

在线全文

学校读者我要写书评

暂无评论

science china mathematics 2007年第9期50卷 1347-1360页

作者： Chang-jian zhao department of Information and mathematics sciences,college of science,china jiliang university,hangzhou 310018,china 1. department of Information and mathematics sciences College of Science China Jiliang University Hangzhou 310018 China

In this paper,we first introduce a concept of L_p-dual Quermassintegral sum function of convex bodies and establish the polar projection minkowski inequality and the polar projection Aleksandrov-Fenchel inequality for L_p-dual Quermassintegral ***,by using Lutwak’s width-integral of index i,we establish the L_p-Brunn-minkowski inequality for the polar mixed projec- tion *** applications,we prove some interrelated results.

关键词： mixed volumes mixed projection bodies dual Quermassintegral sum polar of mixed projection bodies 52A40 53A15

维普期刊数据库

Effect of surface passivation on optical and electronic properties of ultrathin silicon nanosheets

在线全文

学校读者我要写书评

暂无评论

science china(Information sciences) 2012年第6期55卷 1469-1474页

作者： wang Le 1,2,WU Ke 2,DONG Qianmin 1,LI XiaoYan 1,XIONG SiYu 1,XU LeiTing 3 & LIANG Pei 1 1.college Of Electronic science and Engineering,china jiliang university,hangzhou 310018,china 2.department of engineering,zhejiang university,hangzhou 310000,china 3 Hang Zhou Urban Infrastructure Construction and Development Center,hangzhou 310000,china 1. college Of Electronic science and Engineering China Jiliang University Hangzhou 310018 China2. Department of engineering Zhejiang University Hangzhou 310000 China3. Hang Zhou Urban Infrastructure Construction and Development Center Hangzhou 310000 China

The binding energy,electronic structure and optical properties of H-,H 3 C-,and HS-cluster-passivated ultrathin silicon (single-layer and double-layer) nanosheets were calculated using density functional theory based on the plane-wave ultra-soft ***,the most stable configuration was selected from passivated configurations according to the principle of lowest energy after calculating their total *** the density of state and the band structure of the different passivated systems were *** was found that different passivation clusters could affect the forbidden band,theremore the passivated cluster with sulfur could greatly decrease the width of the forbidden band through electron ***,the light absorption and reflection properties were also *** results were conducive to the development of silicon-based optoelectronic devices.

关键词： density functional theory surface passivation super-thin silicon nanosheets electronic structure

ANALYTICAL AND NUMERICAL SOLUTIONS FOR THE FLOW IN MICROTUBE WITH THREE-DIMENSIONAL CORRUGATED SURFACE,PART 1:STEADY FLOW

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2010年第5期22卷 647-656页

作者： wang Hao-li YANG Meng wang Yuan college of Metrological Technology and Engineering China Jiliang University Hangzhou 310018China department of Fluid Engineering School of Energy and Power Engineering Xi＇an Jiaotong University Xi＇an710049 China

The influences of three-dimensional corrugated wall on the fully-developed steady no-slip flows in microtube are studied by analytical and numerical methods in this article. Detailed analytical solutions for the space-averaged equations and the numerical method for the solutions of the disturbance equations are given. An iterative arithm of coupled equations with respect to space-averaged velocities and disturbance velocities is suggested. The study shows that a three-dimensional subsidiary stress layer exists in the near-wall region. The relative roughness, wavenumber and Reynolds number are three important parameters influencing the subsidiary stresses and the space-averaged pressure drop. The space-averaged pressure drop subject to an invariable flow rate mainly depends on the position of datum surface. When the datum surface is taken at the balance position of wall function, the value of pressure drop is determined by the dynamic characteristics of the flow.

关键词： microtube three-dimensional corrugated surface space-averaged method subsidiary stress

维普期刊数据库

Porous Media Percolation Research Based on the Ideal Model

在线全文

学校读者我要写书评

暂无评论

Porous Media Percolation Research Based on the Ideal Model

第十届全国渗流力学学术会议暨2009渗流力学及应用国际论坛

作者： YU Keguang~1,ZHOU Hangxia~2,ZHENG Peng~2 1 zhejiang Water Conservancy And Hydropower college,hangzhou,310018,china, 2 china jiliang university,hangzhou,310018,china

The model of percolation Base on a ideal ball,Research the relationship between fluid’s penetration ratio and porous media of different particle *** the relation model of particle radius and penetration ratio by theoretical *** the change rule between the penetration ratio and particle *** foundation theoretical data for mixing ratio of different particle radius. Lay the foundation for the further research about computing synthesis percolation ratio of mixing ratio of groups porous media of different particle radius.

关键词： particle radius flow model penetration ratio

Synthesis,Structure and Properties of a Luminescent Zinc(Ⅱ) Complex

在线全文

cnki会议

学校读者我要写书评

暂无评论

Synthesis,Structure and Properties of a Luminescent Zinc(Ⅱ)...

中国化学会第六届全国结构化学学术会议

作者： Yi-Sheng Yang~1,Xiao-Li Zhang~1,Li Song~2,Wen-Xiang Chai~(1,*) 1.college of Materials science and Engineering,china jiliang university,zhejiang, hangzhou 310018,PR china 2.department of Chemistry,zhejiang Sci-Tech university,zhejiang,hangzhou 310018,PR china

Since 1987,a small coordinated molecule of Alq was found to be emissive with layered films under the application of an electric field by Tang and VanSlyke,tremendous efforts have been made to improve the device performance of organic lighting-emitting diodes(OLEDs) by optimizing the molecular structure. By utilizing some design principles on functional molecules,a mount of novel molecular materials have

关键词：

A New Improved CMAC Neural Network

在线全文

cnki会议

学校读者我要写书评

暂无评论

A New Improved CMAC Neural Network

2010 Chinese Control and Decision Conference

作者： Yingqi Ge~(1,2),Xiaoping Luo~(2*),Pengying Du~3 1.china jiliang university,hangzhou,china,310018 2.zhejiang university City college Key Laboratory of Intelligent Systems,hangzhou,china,310015 3.zhejiang university City college,hangzhou,china,310015

＜正＞In order to accelerate the learning speed of the conventional CMAC,an Improved Credit Assigned CMAC （ICA-CMAC） is presented in this *** then the proposed ICA-CMAC is applied to approaching two objective *** results show that the ICA-CMAC has faster learning *** addition,the paper discussed different performances of ICA-CMAC influenced by different learning *** was found that the ICA-CMAC with a learning rate less than 1 has a better learning performance,which might be useful in selecting an appropriate learning rate.

关键词： ICA-CMAC online learning credibility learning rate

PRELIminARY STUDY OF ENVIRONMENTAL FITNESS OF MAIN WEEDS FROM THE IMPORTED GRAINS

在线全文

cnki会议

学校读者我要写书评

暂无评论

PRELIMINARY STUDY OF ENVIRONMENTAL FITNESS OF MAIN WEEDS FRO...

中国第三届植物化感作用学术研讨会、第八届全国杂草科学大会、联合国粮农组织——中国“水稻化感作用论坛”

作者： Jin-wen ZHU~(**1),Zheng-hua QIU~2,Guan-jun JIN~1,Xin-wu YANG~3,Du-jiang YANG~4, Yu-qiang CHENG~4,Jian wang~2, 1 department of plant protection,college of agriculture and biotechnology,zhejiang university, hangzhou 310029,zhejiang,china 2 Zhoushan Entry-exit Inspection and Quarantine Bureau, Zhoushan316000,zhejiang,china 3 college of Bio-Safety science and Technology,Hunan Agriculture university,Changsha,Hunan 410128,china:4 college of life science,china jiliang university,hangzhou 310018,zhejiang,china

The influence of temperature,soil moisture and thickness of the soil to seed germination of ragweed(Ambrosia artemisiifolia ),false sorghum(Sorghum halepense),gill chrysanthemum Nim(Sida spinosa) and split Pharbitidis(Ipomoea nil)was conducted in this *** of ragweed,gill chrysanthemum Nim and false sorghum was more suitable when the soils

关键词： PRELIminARY STUDY OF ENVIRONMENTAL FITNESS OF MAIN WEEDS FROM THE IMPORTED GRAINS

Higher-order Sampled-data iterative learning control for nonlinear systems

在线全文

cnki会议

学校读者我要写书评

暂无评论

Higher-order Sampled-data iterative learning control for non...

2010 International Colloquium on Computing,Communication, Control, and Management (CCCM2010)

作者： Xu hongwei college of Mechanical Engineering china jiliang university hangzhou,china Huang yanyan,Gao yanfeng college of Mechanical Engineering china jiliang university hangzhou,china

In this paper,a higher-order sampled-data iterative learning control method is presented for nonlinear system with relative degree and output time *** higher-order learning algorithm does not include numerical differentiations of any error order.A sufficient condition is proposed that the iterative learning control converges to the desired trajectory at each sampling instant if some Lipschiz conditions are satisfied and the sampling period is small enough.A simulation example shows that higher-order algorithm has larger convergence rate.

关键词： Sampled-data iterative learning control,Relative degree,Higher-order learning algorithm,Bellman lemma,convergence rate