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Unidirectional phase singularity in ultrathin metamaterials at exceptional points

Physical Review A 2014年第6期89卷 065801-065801页

作者： Ming Kang Hai-Xu Cui Teng-Fei Li Jing Chen Weiren Zhu Malin Premaratne College of Physics and Materials Science Tianjin Normal University Tianjin 300387 China MOE Key Laboratory of Weak-Light Nonlinear Photonics School of Physics Nankai University Tianjin 300071 China Advanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems Engineering Monash University Clayton Victoria 3800 Australia

Scattering properties of light in metamaterials are similar to those in open quantum systems. Here we propose an ultrathin tailored metamaterial designed to show that one-way zero reflection yielding to topologically stable phase dislocation is responsible for the exceptional point, one of the most important degeneracies in the non-Hermitian Hamiltonian. In order to bridge the exotic macroscopic optical phenomenon occurring in metamaterials, a phenomenological model under microscopic view is developed and good agreement with the full-blown numerical simulation is found. Our investigation uncovers the capabilities of metamaterials to exhibit extreme optical properties and to provide us with many potential applications such as the suppression of undesired scattering signals in the spectral band ranging from microwaves to visible light.

关键词： Metamaterials

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On Authentication in a Connected Vehicle: Secure Integration of Mobile Devices with Vehicular Networks

On Authentication in a Connected Vehicle: Secure Integration...

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IEEE/ACM International Conference on Cyber-Physical Systems

作者： Kyusuk Han Swapna Divya Potluri Kang G. Shin Real-Time Computing Laboratory Department of Electrical Engineering and Computer Science The University of Michigan

ISBN: (纸本)9781450319966

Recent advances in in-vehicle technologies have paved way to a new era of connectivity. Vehicle manufacturers have already deployed various technologies for driving assistance, anti-theft, and infotainment. They are now developing ways to interface mobile devices with vehicles and provide the customer's smartphone or tablet the ability to send/receive information to/from the car. However, such an integration introduces severe security risks to the vehicle. The in-vehicle network was originally designed to operate in a closed environment and thus, security was not of concern. It has now become an important issue due to an increasing number of external interfaces to the in-vehicle network. Several studies have already shown that an in-vehicle network can be easily compromised just by connecting cheap commercial devices and doing reverse engineering. Although research efforts have been made to secure in-vehicle networks, most of them focused on defining security requirements, or presenting attack scenarios without providing any feasible solution. Also, to the best of our knowledge, there hasn't been any study with a specific focus on understanding and analyzing the security aspects of integrating mobile devices with cars. In this paper, we define the integration model, present the attack scenarios, define the security objectives, and then propose a 3-step verification mechanism that meets our objectives.

关键词： Vehicular networks Security Mobile device integration Authentication Controller Area Network (CAN) Vehicle Network Mobile devices Authentication Security Goals Security vehicle Cars Secure DNA Integration integration safety requirements Network

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Social incentive policies to engage commercial building occupants in demand response

Social incentive policies to engage commercial building occu...

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IEEE International Conference on Automation science and engineering (CASE)

作者： Sisi Li Kun Deng MengChu Zhou Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA Coordinated Science Laboratory University of Illinois at Urbana-Champaign Urbana IL USA Key Laboratory of Embedded System and Service Computing Tongji University Shanghai China

Occupants' comfort is the primary target in a building operation. However their efforts are often neglected and ruled out from traditional control strategies of energy-efficient building management systems. Occupant-engaged control strategies have recently attracted many research attentions and demonstrated great potentials for energy saving. With them, occupants' behavior is incorporated into the closed-loop control methods in which their initiatives actively contribute to building services and energy utility by explicitly expressing their preferences. This work proposes an occupant-engaged demand response (DR) strategy for building automation in which occupants are actively engaged to adapt their energy consumption in response to incentive opportunities designed by facility managers. A model-based study and a Nash-Equilibrium-based solution are provided to assist facility managers with the design of social incentive policies to promote occupant participation, along with the guarantee of lucrativeness for a DR event.

关键词： Games Electricity Load management Building automation Companies

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Optimal scheduling of single-arm multi-cluster tools with two-space buffering modules

Optimal scheduling of single-arm multi-cluster tools with tw...

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IEEE International Conference on Automation science and engineering (CASE)

作者： FaJun Yang NaiQi Wu Yan Qiao MengChu Zhou Department of Industrial Engineering Guangdong University of Technology Guangzhou China Institute of Systems Engineering Macau University of Science and Technology Macau Key Laboratory of Embedded System and Service Computing Tongji University Shanghai China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

A multi-cluster tool is composed of a number of single-cluster tools linked by buffering modules. The capacity of a buffering module can be one or two. Aiming at finding an optimal one-wafer cyclic schedule, this work explores the effect of two-space buffering modules on the performance of a multi-cluster tool. The tool is modeled by a kind of Petri nets. The dynamic behavior of robot waiting and tasks, process modules, and buffers is well captured by the net model. With the model, this work shows that there is always a one-wafer cyclic schedule that reaches the lower bound of the cycle time of a process-dominant tool. Furthermore, a constant-time algorithm is revealed to find such a schedule for the first time for such multi-cluster tools. An illustrative example is given to show the application and power of this new method.

关键词： Schedules Robot kinematics Firing Semiconductor device modeling Fires Load modeling

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DIV： Dynamic Integrity Validation Framework for Detecting Compromises on Virtual Machine Based Cloud Services in real time

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China Communications 2014年第8期11卷 15-27页

作者： WANG Chunlu LIU Chuanyi LIU Bin DONG Yingfei School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 P. R. China School of Software Engineering Beijing University of Posts and Telecommunications Beijing 100876 P. R. China Key Laboratory of Trustworthy Distributed Computing and Service (BUPT) Ministry of Education Beijing 100876 P. R. China Department of Electrical Engineering University of Hawaii Honolulu Hawaii U.S.

with the increasing popularity of cloud services,attacks on the cloud infrastructure also increase ***,how to monitor the integrity of cloud execution environments is still a difficult *** this paper,a real-time dynamic integrity validation(DIV) framework is proposed to monitor the integrity of virtual machine based execution environments in the *** can detect the integrity of the whole architecture stack from the cloud servers up to the VM OS by extending the current trusted chain into virtual machine's architecture *** introduces a trusted third party(TTP) to collect the integrity information and detect remotely the integrity violations on VMs periodically to avoid the heavy involvement of cloud tenants and unnecessary information leakage of the cloud *** evaluate the effectiveness and efficiency of DIV framework,a prototype on KVM/QEMU is implemented,and extensive analysis and experimental evaluation are *** results show that the DIV can efficiently validate the integrity of files and loaded programs in real-time,with minor performance overhead.

关键词： cloud security remote attestation trusted computing cloud trustworthiness

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Study of [Formula: see text] and [Formula: see text] production in [Formula: see text] collisions at [Formula: see text] and search for anomalous quartic gauge couplings with the ATLAS experiment

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The European physical journal. C, Particles and fields 2017年第9期77卷 646页

作者： M Aaboud G Aad B Abbott O Abdinov B Abeloos S H Abidi O S AbouZeid N L Abraham H Abramowicz H Abreu R Abreu Y Abulaiti B S Acharya S Adachi L Adamczyk J Adelman M Adersberger T Adye A A Affolder T Agatonovic-Jovin C Agheorghiesei J A Aguilar-Saavedra S P Ahlen F Ahmadov G Aielli S Akatsuka H Akerstedt T P A Åkesson E Akilli A V Akimov G L Alberghi J Albert P Albicocco M J Alconada Verzini S C Alderweireldt M Aleksa I N Aleksandrov C Alexa G Alexander T Alexopoulos M Alhroob B Ali M Aliev G Alimonti J Alison S P Alkire B M M Allbrooke B W Allen P P Allport A Aloisio A Alonso F Alonso C Alpigiani A A Alshehri M I Alstaty B Alvarez Gonzalez D Álvarez Piqueras M G Alviggi B T Amadio Y Amaral Coutinho C Amelung D Amidei S P Amor Dos Santos S Amoroso G Amundsen C Anastopoulos L S Ancu N Andari T Andeen C F Anders J K Anders K J Anderson A Andreazza V Andrei S Angelidakis I Angelozzi A Angerami A V Anisenkov N Anjos A Annovi C Antel M Antonelli A Antonov D J Antrim F Anulli M Aoki L Aperio Bella G Arabidze Y Arai J P Araque V Araujo Ferraz A T H Arce R E Ardell F A Arduh J-F Arguin S Argyropoulos M Arik A J Armbruster L J Armitage O Arnaez H Arnold M Arratia O Arslan A Artamonov G Artoni S Artz S Asai N Asbah A Ashkenazi L Asquith K Assamagan R Astalos M Atkinson N B Atlay K Augsten G Avolio B Axen M K Ayoub G Azuelos A E Baas M J Baca H Bachacou K Bachas M Backes M Backhaus P Bagnaia M Bahmani H Bahrasemani J T Baines M Bajic O K Baker E M Baldin P Balek F Balli W K Balunas E Banas A Bandyopadhyay Sw Banerjee A A E Bannoura L Barak E L Barberio D Barberis M Barbero T Barillari M-S Barisits J T Barkeloo T Barklow N Barlow S L Barnes B M Barnett R M Barnett Z Barnovska-Blenessy A Baroncelli G Barone A J Barr L Barranco Navarro F Barreiro J Barreiro Guimarães da Costa R Bartoldus A E Barton P Bartos A Basalaev A Bassalat R L Bates S J Batista J R Batley M Battaglia M Bauce F Bauer H S Bawa J B Beacham M D Beattie T Beau P H Beauchemin P Bechtle H P Beck H C Beck K Becker M Becker M Beckingham C Becot A J Beddall A Beddall Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco. CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France. Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman OK USA. Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan. LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France. Department of Physics University of Toronto Toronto ON Canada. Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz CA USA. Department of Physics and Astronomy University of Sussex Brighton UK. 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. Center for High Energy Physics University of Oregon Eugene OR USA. Department of Physics Stockholm University Stockholm Sweden. The Oskar Klein Centre Stockholm Sweden. INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy. ICTP Trieste Italy. International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan. Faculty of Physics and Applied Computer Science AGH University of Science and Technology Kraków Poland. Department of Physics Northern Illinois University DeKalb IL USA. Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany. Particle Physics Department Rutherford Appleton Laboratory Didcot UK. Institute of Physics University of Belgrade Belgrade Serbia. Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania. Laboratório de Instrumentação e Física Experimental de Partículas-LIP Lisbon Portugal. Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain. Department of Physics Boston University Boston MA USA. Joint Institute for Nuclear Research JINR Dubna Dubna Russia. INFN Sezione di Roma Tor Vergata Rome Italy. Dipartimento di Fisica Università di Roma

This paper presents a study of and triboson production using events from proton-proton collisions at a centre-of-mass energy of recorded with the ATLAS detector at the LHC and corresponding to an integrated luminosity of 20.2 fb . The production cross-section is determined using a final state containing an electron, a muon, a photon, and neutrinos ( ). Upper limits on the production cross-section of the final state and the and final states containing an electron or a muon, two jets, a photon, and a neutrino ( or ) are also derived. The results are compared to the cross-sections predicted by the Standard Model at next-to-leading order in the strong-coupling constant. In addition, upper limits on the production cross-sections are derived in a fiducial region optimised for a search for new physics beyond the Standard Model. The results are interpreted in the context of anomalous quartic gauge couplings using an effective field theory. Confidence intervals at 95% confidence level are derived for the 14 coupling coefficients to which and production are sensitive.

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Characterizing feedback signal drop patterns in formal verification of networked control systems

Characterizing feedback signal drop patterns in formal verif...

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2013 IEEE Conference on computer Aided Control System Design, CACSD 2013

作者： Goswami, Dip Chakraborty, Samarjit Bhaduri, Purandar Mitter, Sanjoy K. Institute for Real-Time Computer Systems TU Munich Germany Department of Computer Science and Engineering IIT Guwahati India Laboratory for Information and Decision Systems MIT United States

ISBN: (纸本)9781479915651

In order to obtain resource efficient implementations of control loops on embedded platforms, recently there has been a renewed interest in studying stability and various other quality-of-control (QoC) metrics in the presence of control message drops. Towards this, different methods have been proposed to quantify the impact of message drops on stability and control performance. In this paper we will survey these techniques and clarify the relationship between them. Given a drop pattern that satisfies stability and specified QoC constraints, it is important to check whether an implementation platform satisfies this pattern. In other words, whether the control loop in question may be implemented on this platform. Given an architecture, we will also show how certain notions of expressing drop patterns are easier to verify compared to others. © 2013 IEEE.

关键词： Drops

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Modeling low energy x-ray interactions with biological material at the CUEBIT

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Journal of Physics: Conference Series 2015年第1期583卷

作者： J Klingenberger M Schott T Kimmel D Medlin A Gall M Rusin D Dean E Takacs School of Computing Clemson University 100 McAdams Hall Clemson SC 29634 USA Department of Electrical Engineering and Computer Science Vanderbilt University 400 24th Ave S Jacobs Hall Nashville TN 37212 USA Department of Physics and Astronomy Clemson University 118 Kinard Laboratory Clemson SC 29634 USA Department of Bioengineering Clemson University 301 Rhodes Research Center Clemson SC 29634 USA

Recent developments at Clemson University have established the need to model the production of x-rays using a highly charged ion beam generated by the Clemson University Electron Beam Ion Trap (CUEBIT). A Geant4 modeling environment has been developed on Clemson University's Palmetto2 supercomputing cluster to simulate the interaction of these x- rays with biological material. Preliminary results of the model have been obtained after performing initial simulations on the computing cluster. Future experiments using the CUEBIT as well as refinements to the Geant4 model are discussed.

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Gaussian-modulated coherent-state measurement-device-independent quantum key distribution

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Physical Review A 2014年第4期89卷 042335-042335页

作者： Xiang-Chun Ma Shi-Hai Sun Mu-Sheng Jiang Ming Gui Lin-Mei Liang College of Science National University of Defense Technology Changsha 410073 People's Republic of China Centre for Quantum Information and Quantum Control Department of Physics and Department of Electrical and Computer Engineering University of Toronto Toronto Ontario Canada M5S 3G4 State Key Laboratory of High Performance Computing National University of Defense Technology Changsha 410073 People's Republic of China

Measurement-device-independent quantum key distribution (MDI-QKD), leaving the detection procedure to the third partner and thus being immune to all detector side-channel attacks, is very promising for the construction of high-security quantum information networks. We propose a scheme to implement MDI-QKD, but with continuous variables instead of discrete ones, i.e., with the source of Gaussian-modulated coherent states, based on the principle of continuous-variable entanglement swapping. This protocol not only can be implemented with current telecom components but also has high key rates compared to its discrete counterpart; thus it will be highly compatible with quantum networks.

关键词： Quantum entanglement

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Stretchable Electronics: Epidermal Electronics with Advanced Capabilities in Near-Field Communication (Small 8/2015)

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Small 2015年第8期11卷

作者： Jeonghyun Kim Anthony Banks Huanyu Cheng Zhaoqian Xie Sheng Xu Kyung-In Jang Jung Woo Lee Zhuangjian Liu Philipp Gutruf Xian Huang Pinghung Wei Fei Liu Kan Li Mitul Dalal Roozbeh Ghaffari Xue Feng Yonggang Huang Sanjay Gupta Ungyu Paik John A. Rogers Department of Materials Science and Engineering Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana IL 61801 USA Department of Materials Science and Engineering Department of Energy Engineering Hanyang University Seoul 133–791 Republic of Korea Department of Mechanical Engineering Civil and Environmental Engineering Center for Engineering and Health and Skin Disease Research Center Northwestern University Evanston IL 60208 USA Department of Engineering Mechanics Center for Mechanics and Materials Tsinghua University Beijing 100084 China Department of Civil and Environmental Engineering Northwestern University Evanston IL 60208 USA Institute of High Performance Computing 1 Fusionopolis Way #16–16 Connexis Singapore 138632 Singapore Functional Materials and Microsystems Research Group School of Electrical and Computer Engineering RMIT University Melbourne VIC 3000 Australia MC10 Inc. Cambridge Massachusetts 02140 USA Department of Engineering Mechanics Tsinghua University Beijing 100084 China

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