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IEEE International Conference on Intelligent Rail Transportation (ICIRT)

作者： Shuai Su Tao Tang Clive Roberts Ling Huang Traffic Control and Safety Beijing Jiaotong University China School of Electronic Electrical and Computer Engineering University of Birmingham UK Ministry of Science and Technology of High Technology Research and Development Center China

Energy efficiency is paid more and more attention in subway systems to reduce the operational cost as well as ensure an environmentally friendly transportation mode. Optimization on the driving strategy and efficient utilization of the regenerative energy are two effective methods to reduce the energy consumption in electric rail systems. This paper proposes a cooperative train control model to minimize the practical energy consumption, i.e., the difference between the traction energy of the successive train and the reused energy from regeneration. Firstly, we design a numerical algorithm to calculate the optimal driving strategy with a given trip time, in which the variable traction forces, speed limits, and gradients are considered. Then we formulate a cooperative train control model to adjust the trip time of the successive train for efficient use of the regenerative energy. Finally, the optimal driving strategy of the following trip is obtained for the successive train with the optimal departure time. Furthermore, some case studies based on the Beijing Yizhuang subway line are presented to illustrate the effectiveness of the proposed approach on energy-saving.

关键词： Energy consumption Acceleration Numerical models Switches Force Mathematical model Educational institutions

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A study on gate-AU-around (GAA) polycrystalline silicon channel SONOS flash memory

A study on gate-AU-around (GAA) polycrystalline silicon chan...

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IEEE International Nanoelectronics Conference (INEC)

作者： Joo Yun Seo Sang-Ho Lee Yoon Kim Se Hwan Park Wandong Kim Do-Bin Kim Byung-Gook Park Inter-university Semiconductor Research Center (ISRC) School of Electrical Engineering and Computer Science Seoul National University Seoul South Korea

In this study, the gate-all-around (GAA) poly-Si channel flash memories with charge trap layer (Si 3 N 4 ) have been successfully fabricated. Electric characteristics of fabricated devices including threshold voltage shift with program/erase operation have been investigated. Gate configurations were structured differently according to each defined channel width. Results show that devices with gate-all-around structure have superior program efficiency. To investigate the effect of gate configuration on the program efficiency, TCAD simulation was carried out.

关键词： Decision support systems Nanoelectronics Conferences

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Capture cross section analysis of four-level Random-Telegraph-Noise in Gate-Induced Drain Leakage current

Capture cross section analysis of four-level Random-Telegrap...

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IEEE International Nanoelectronics Conference (INEC)

作者： Seulki Park Sungwon Yoo Hyungcheol Shin Inter-University Semiconductor Research Center (ISRC) and School of Electrical Engineering and Computer Science Seoul National University Seoul South Korea

In this paper, we measured four-level Random Telegraph Noise (RTN) in Gate Induced Drain Leakage (GIDL) current of Metal Oxide Semiconductor Field Effect Transistor (MOSFET). Using RTN measurement data, we extracted fundamental parameters of each trap, such as the trap depth (x T ) and energy level (E Cox -E T ). To correctly interpret capture and emission process, capture cross section (σ c ) of the traps was extracted by applying more accurate capture cross section model and bias dependence of σ c was analyzed using potential barrier lowering.

关键词： Electron traps Logic gates Current measurement Semiconductor device measurement Noise MOSFET circuits Leakage current

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Inferring Military Activity in Hybrid Networks through Cache Behavior

Inferring Military Activity in Hybrid Networks through Cache...

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MILCOM, Military Communications Conference

作者： Mostafa Dehghan Dennis L. Goeckel Ting He Don Towsley School of Computer Science University of Massachusetts Amherst Department of Electrical and Computer Engineering University of Massachusetts Amherst IBM T.J. Watson Research Center

ISBN: (纸本)9781479948994

In this work, we consider a tactical hybrid network where a military adhoc network utilizes a commercial cellular network as backbone for data traffic. It is assumed that all traffic goes through a cache at the cellular base station with Least-Recently Used (LRU) policy. We study the possibility of inferring the military traffic rate from cache hit/miss observations of a single adversary node. We show the possibility of such an inference by presenting algorithms for estimating the parameters of the hybrid network. First, we show that an adversary node can estimate the cache and workload parameters of a hybrid network by observing the hit/miss results of her queries. We then show that these estimates can be used to infer the military traffic rate.

关键词： Equations Estimation Inference algorithms Security Base stations Convergence Military communication

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Model Predictive control with Sequential Linearization Approach for a Nonlinear Time Varying Biological System

Model Predictive Control with Sequential Linearization Appro...

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第25届中国控制与决策会议

作者： Mojtaba Zaare Mehrjerdi Behzad Moshiri Ghassem Amoabediny Arman Ashktorab Babak Nadjar Araabi Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering Faculty of Engineering University of Tehran Research Center for New Technologies in Life Science Engineering University of Tehran Department of Life Science Engineering Faculty of New Technologies University of Tehran Department of Chemical Engineering Faculty of Engineering University of Tehran

ISBN: (纸本)9781467355339

As life science progress and its consequences provide human life necessities, controlling these kinds of processes has recently become very important. Unfortunately because of including delay and nonlinear behavior of micro-organisms these processes have nonlinear time varying model and so controlling them is too complicated. These nonlinear dynamics are too slow and so it is possible to linearize the model step by step and apply control signal to the local linearized models. In this paper we design a model predictive controller for each linearized model at time unit and as a result a nonlinear time varying system has been controlled properly. As these localized models are open loop unstable, we have to use close loop paradigm also due to its numerically robustness. Finally result has validated with experimental values and reliability of this approach has been exposed.

关键词： MPC, Sequential Linearization, Biological System control, Aerated Flask

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Model Free Predictive control for a Nonlinear Biological System with Intelligent Optimization Approach

Model Free Predictive Control for a Nonlinear Biological Sys...

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第25届中国控制与决策会议

作者： Mojtaba Zaare Mehrjerdi Ghassem Amoabediny Behzad Moshiri Arman Ashktorab Babak Nadjar Araabi Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering Faculty of Engineering University of Tehran Research Center for New Technologies in Life Science Engineering University of Tehran Department of Life Science Engineering Faculty of New Technologies University of Tehran Department of Chemical Engineering Faculty of Engineering University of Tehran

ISBN: (纸本)9781467355339

Today the importance of life science and its related processes are undeniable. Modeling and control of these kind of processes are too complicate because of existence of delay in growth and also nonlinear behavior of micro-organisms. Model predictive control is one of the most popular advanced controlling strategies in this industry, however its dependence on accurate model for predicting future input and output values is limitating. If there is a way that could predict the future values of the process properly, it is possible to overcome to the existing challenges. In this paper we design a model free predictive controller by using a trained recurrent neural network as a predictor for prediction stage at MPC and using GA for solving the associated optimization problem that result the optimal control signal sequence.

关键词： NNMPC GA Biological System Aerated Flask

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Interlayer vibrational modes in few-quintuple-layer Bi2Te3 and Bi2Se3 two-dimensional crystals: Raman spectroscopy and first-principles studies

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Physical Review B 2014年第24期90卷 245428-245428页

作者： Yanyuan Zhao Xin Luo Jun Zhang Junxiong Wu Xuxu Bai Meixiao Wang Jinfeng Jia Hailin Peng Zhongfan Liu Su Ying Quek Qihua Xiong Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Institute of High Performance Computing 1 Fusionopolis Way #16-16 Connexis Singapore 138632 Singapore Department of Physics Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore 6 Science Drive 2 Singapore 117546 Singapore Center for Nanochemistry Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University Beijing 100871 People's Republic of China Department of Physics Key Laboratory of Artificial Structures and Quantum Control Ministry of Education Shanghai Jiao Tong University Shanghai 200240 People's Republic of China NOVITAS Nanoelectronics Centre of Excellence School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798 Singapore

Layered materials, such as graphite/graphene, boron nitride, transition metal dichalcogenides, represent materials in which reduced size, dimensionality, and symmetry play critical roles in their physical properties. Here, we report on a comprehensive investigation of the phonon properties in the topological insulator Bi2Te3 and Bi2Se3 two-dimensional (2D) crystals, with the combination of Raman spectroscopy, first-principles calculations, and group theory analysis. Low frequency (<30cm−1) interlayer vibrational modes are revealed in few-quintuple-layer (QL) Bi2Te3/Bi2Se3 2D crystals, which are absent in the bulk crystal as a result of different symmetries. The experimentally observed interlayer shear and breathing mode frequencies both show blueshifts, with decreasing thickness in few-QL Bi2Te3 (down to 2QL) and Bi2Se3 (down to 1QL), in agreement with first-principles calculations and a linear chain model, from which the interlayer coupling force constants can be estimated. Besides, an intense ultralow (<12cm−1) frequency peak is observed in 2–4QL Bi2Te3, which is tentatively attributed to a substrate-induced interface mode supported by a linear chain model analysis. The high frequency Raman peaks exhibit frequency shifts and broadening from 3D to 2D as a result of the phonon confinement effect. Our studies shed light on a general understanding of the influence of dimensionality and crystal symmetry on the phonon properties in layered materials.

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Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at sNN=2.76 TeV measured with the ATLAS detector

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Physical Review C 2016年第3期93卷 034914-034914页

作者： G. Aad B. Abbott J. Abdallah S. Abdel Khalek O. Abdinov R. Aben B. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti B. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye T. Agatonovic-Jovin J. A. Aguilar-Saavedra M. Agustoni S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson G. Akimoto A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison B. M. M. Allbrooke L. J. Allison P. P. Allport J. Almond A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer B. Alvarez Gonzalez M. G. Alviggi K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei X. S. Anduaga S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio Bella R. Apolle G. Arabidze I. Aracena Y. Arai J. P. Araque A. T. H. Arce J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez V. Arnal H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay B. Auerbach K. Augsten M. Aurousseau G. Avolio G. Azuelos Y. Azuma M. A. Baak A. E. Baas C. Bacci H. Bachacou K. Bachas M. Backes M. Backhaus J. Backus Mayes E. Badescu P. Bagiacchi P. Bagnaia Y. Bai T. Bain J. T. Baines O. K. Baker P. Balek F. Balli E. Banas Sw. Banerjee A. A. E. Bannoura V. Bansal H. S. Bansil L. Barak E. L. Barberio D. Barberis M. Barbero T. Barillari M. Barisonzi T. Barklow N. Barlow B. M. Barnett R. M. Barnett Z. Barnovska A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guimarães da Costa R. Bartoldus A. E. Barton P. Bartos V. Bartsch A. Bassalat A. Basye R. L. Bates J. R. Batley M. Battaglia M. Battistin F. Bauer H. S. Bawa M CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman OK United States of America Institute of Physics Academia Sinica Taipei Taiwan LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics Oklahoma State University Stillwater OK United States of America Department of Physics and Astronomy Michigan State University East Lansing MI United States of America Department of Physics University of Toronto Toronto ON Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel CERN Geneva Switzerland Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton NY United States of America Department of Physics Yale University New Haven CT United States of America Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland Department of Physics Boston University Boston MA United States of America Joint Institute for Nuclear Research JINR Dub

Prompt photon production in sNN=2.76-TeV Pb+Pb collisions has been measured by the ATLAS experiment at the Large Hadron Collider using data collected in 2011 with an integrated luminosity of 0.14 nb−1. Inclusive photon yields, scaled by the mean nuclear thickness function, are presented as a function of collision centrality and transverse momentum in two pseudorapidity intervals, |η|<1.37 and 1.52≤|η|<2.37. The scaled yields in the two pseudorapidity intervals, as well as the ratios of the forward yields to those at midrapidity, are compared to the expectations from next-to-leading-order perturbative QCD (pQCD) calculations. The measured cross sections agree well with the predictions for proton-proton collisions within statistical and systematic uncertainties. Both the yields and the ratios are also compared to two other pQCD calculations, one which uses the isospin content appropriate to colliding lead nuclei and another which includes nuclear modifications to the nucleon parton distribution functions.

关键词： Hard scattering Photon, lepton & quark production Relativistic heavy-ion collisions

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Educational level and age as contributing factors to road traffic accidents

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Chinese Journal of Traumatology 2013年第5期16卷 281-285页

作者： Ashkan Sami Ghasem Moafian Arman Najafi Mohammad Reza Aghabeig Navid Yamin Seyed Taghi Heydari Kamran B Lankarani Department of Computer Science and Engineering School of Electrical Engineering and Computer ShirazUniversity Shiraz Iran Health Policy Research Center Shiraz University ofMedical Sciences Shiraz Iran Department of Biostatistics Jahrom University of Medi-cal Sciences Jahrom Iran

Objective： This research analyzes data on road traffic accidents （RTA） in Fars province, whose roads are among the highly dangerous ones in Iran. It inves- tigates educational level and age involved in RTA in order to discover patterns that can prevent or decrease accidents. Methods： This research made use of data visualization techniques to find hidden patterns. The data included mor- tality rate related to RTA in Fars province and were obtained from Fars Forensic Medicine Registry covering a period of 1 year from March 21, 2010 to March 21, 2011. All data were analyzed using SPSS 11.5. The results were reported as de- scriptive indices such as frequency （percentage）. The Chi- square test was applied to the data concerning educational level and age. P value less than 0.05 was considered significant. Results： In the mentioned period, 1 831 people were killed, out of whom un/lowly educated people （69.6%） ac- counted for the highest mortality rate. The significant rela- tionship between educational level and mortality rate was found （X2=275.98, P〈0.0001）. Also three was a significant association between age and mortality rate （X2=371.20, P〈0.0001）. Young people （age between 20 and 29 years） contribute to higher RTA mortality rate compared with other age groups. Conclusion： The educational level and age are signifi- cantly correlated to mortality rate. The youth and un/lowly educated people suffer more fatal RTA.

关键词： Accidents, traffic Mortality Education Data mining Iran

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Recent Advances in the Analytical Modeling of Wire Media Based Metamaterials with Microwave and Terahertz Applications

Recent Advances in the Analytical Modeling of Wire Media Bas...

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URSI Commission B International Symposium on Electromagnetic Theory

作者： S. I. Maslovski M. G. Silveirinha A. B. Yakovlev C. S. R. Kaipa G. W. Hanson P. A. Belov O. Luukkonen I. S. Nefedov C. R. Simovski S. A. Tretyakov Y. R. Padooru Departamento de Engenharia Electrotecnica da Universidade de Coimbra Instituto de Telecomunicacoes Department of Electrical Engineering University of Mississippi Department of Electrical and Computer Engineering University of Wisconsin-Milwaukee School of Electronic Engineering and Computer Science Queen Mary University of London Nokia Research Center Aalto University School of Electrical Engineering SMARAD Center of Excellence

ISBN: (纸本)9781467349390

Here, we review our recent progress on the analytical modeling of wire media based metamaterial structures and demonstrate a variety of microwave and terahertz applications. The analysis is based on the homogenization theory of spatially dispersive wire media with additional boundary conditions derived for different interface scenarios. The applications include subwavelength imaging, super lenses, wideband absorbers, artificial impedance surfaces, carbon-based nanomaterials, and many others.

关键词： Wires Metamaterials Dispersion Media Microwave theory and techniques Electromagnetics Microwave imaging

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