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Preface to the CCASt-World Laboratory Series

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Preface to the CCAST-World Laboratory Series

CCASt“场论、引力与多辛结构”研讨会

作者： t.D.Lee

the China Center of Advanced Science and technology(CCASt)was established on October 17,1986 through the strong support ofWorld Laboratory and the Chinese *** purpose is to

关键词： Preface to the CCASt-World Laboratory Series

ADAPtIVE NN CONtROLLER DESIGN FOR GENERAL NONLINEAR SYStEMS

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ADAPTIVE NN CONTROLLER DESIGN FOR GENERAL NONLINEAR SYSTEMS

第二十届中国控制会议

作者： t．H．Lee Department of Electrical and Computer Engineering National University of Singapore Singapore 117576

＜正＞In this paper, adaptive neural network control is investigated for a class of non-affine nonlinear systems. Firstly, the existence of an ideal implicit feedback linearization control （IFLC） is established based on implicit function theory. Using taylor series expansion, it is shown that the control of non-affine nonlinear systems is equivalent to the control of affine nonlinear systems in the neighborhood of the operating trajectory under mild conditions. then, an adaptive neural sliding mode controller is designed for the transformed nonlinear system. the proposed neural sliding mode controller can guarantee the boundedness of the closed-loop signals and the output tracking error of the system in a small neighbourhood of zero, whose size can be adjusted by tuning the controller design parameters. Simulation study is used to show the effectiveness of the scheme.

关键词： Nonlinear system Adaptive control Neural networks

Galactic Structure and Holography

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Journal of Modern Physics 2017年第14期8卷 2179-2188页

作者： t. R. Mongan 84 Marin Avenue Sausalito CA USA

Galactic structure, involving bulk motion of matter conserving mass and angular momentum, is analyzed in a holographic large scale structure model. In isolated galaxies, baryonic matter inhabits dark matter halos with holographic radii determined by total galactic mass. the existence of bulgeless giant spiral galaxies challenges previous models of galaxy formation. In sharp contrast, holographic analysis is consistent with the finding that 15% of a sample of 15,000 edge-on disk galaxies in the sixth SDSS data release are bulgeless. Holographic analysis also indicates that E7 ellipticals are less than 2% of elliptical galaxies.

关键词： Galactic Structure Holography

New types of Q-Integral Inequalities

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Advances in Pure Mathematics 2011年第3期1卷 77-80页

作者： Waadallah t. Sulaiman 不详

Several new q-integral inequalities are presented. Some of them are new, One concerning double integrals, and others are generalizations of results of Miao and Qi [1]. A new key lemma is proved as well.

关键词： Q-Integral Inequalities

Extending the Network Lifetime Using Optimized Energy Efficient Cross Layer Module (OEEXLM) in Wireless Sensor Networks

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Wireless Sensor Network 2009年第1期1卷 27-35页

作者： t. V. PADMAVAtHY 不详

In wireless sensor network, the primary design is to save the energy consumption as much as possible while achieving the given task. Most of recent researches works have only focused on the individual layer issues and ignore the importance of inter working between different layers in a sensor network. In this paper, we use a cross-layer approach to propose an energy-efficient and extending the life time of the sensor network. this protocol which uses routing in the network layer, and the data scheduling in MAC layer. the main ob-jective of this paper is to provide a possible and flexible approach to solve the conflicts between the require-ments of large scale, long life-time, and multi-purpose wireless sensor networks. this OEEXLM module gives better performance compared to all other existing protocols. the performance of OEEXLM module compared with S-MAC and directed diffusion protocol.

关键词： Routing Medium Access Control Life time of the Network Energy Efficiency OEEXLM Module Wireless Sensor Networks

Single iron sites for catalytic, nonoxidative conversion of methane

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Science China Chemistry 2014年第7期57卷 923-923页

作者： Alexis t. Bell University of California

the availability of inexpensive natural gas from the fracturing of shale and as a byproduct of oil production has stimulated the investigation of catalytic processes for the direct conversion of methane to products. Efforts in this direction are further driven by the desire to avoid the generation of CO2 and its emission to the atmosphere, as occurs when methane is steam-retbrmed to produce synthesis gas, a mixture of CO and H2 that can be used for the production of fuels and chemicals via Fischer-tropsch synthesis. During the past forty years, numerous investigators have attempted to convert methane to higher value products by either thermal dehydrogenation or by oxidative dehydrogenation. While methane can be converted to benzene and hydrogen via thermal dehydrogenation,

关键词：甲烷转化催化过程非氧化站点石油生产氧化脱氢直接转换副产品

NEW RESULtS ON SWItCHED LINEAR SYStEMS

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NEW RESULTS ON SWITCHED LINEAR SYSTEMS

第二十届中国控制会议

作者： t．H．Lee Department of Electrical and Computer Engineering National University of Singapore Singapore 117576

＜正＞this paper investigates the minimum switching issues of switched linear control systems. For any switched linear systems of （?）n, we prove that any two states in the controllable subspace can be transfered to ... 详细信息

关键词： Switched linear systems controllability minimum switching.

Performance of time-Hopping PPAM UWB Multiple Access Communications Over Indoor Fading Channels

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Performance of Time-Hopping PPAM UWB Multiple Access Communi...

IEEE 2007 International Symposium on Microwave,Antenna,Propagation and EMC technologies for Wireless Communications(ISMAPE-2007)

作者： t.Aaron Gulliver Dept.of Electrical Computer Engineering University of Victoria

the performance of time-hopping pulse position amplitude modulation(PPAM) for an ultra-wideband(UWB) communication system over fading channels is investigated based on the multipath fading statistics of UWB indoor wireless *** selective fading channel is considered for multiple access environment,which is addressed with Gaussian approximation based on single user *** probability expressions are derived from a Signal to Noise Ratio(SNR) perspective for different fading *** probability results are verified by Monte Carlo simulation.

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High-temperature anelastic behavior of silicathrough the α-β phase transition

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High-temperature anelastic behavior of silicathrough the α-...

中国矿物岩石地球化学学会第13届学术年会

作者： Simon A.t.Redfern Department of Earth Sciences University of CambridgeCambridgeUKCB2 3EQ

＜正＞Four different silica samples:single crystal quartz cut parallel with[100]and[001],polycrystalline Arkansas novaculite and Permian sandstone from Arran,Scotland,have been investigated by Dynamic Mechanical Analyzer（DMA）,which is essentially a three-point bending system,to measure the storage modulus and mechanical loss during heating and cooling through theα-βphase *** crystal quartz samples,which were separately cut along the[100]and[001]direction,display different temperatures for the first-orderα-βtransition due to anisotropic strain along different orientation under external *** polycrystalline novaculite with grain size 1～5μm exhibits characteristics of a second-order phase transition,and it shows 6℃higher transition temperature than single crystal quartz,which is related to the internal pressure caused by anisotropic

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