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Occupancy distribution estimation for smart light delivery with perturbation-modulated light sensing

Journal of Solid State Lighting 2014年第1期1卷 1-29页

作者： Wang, Quan Zhang, Xinchi Boyer, Kim L Signal Analysis and Machine Perception Laboratory Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute Troy USA

The advent of modern light-emitting diode (LED) techniques enables us to develop novel lighting systems with numerous previously unavailable features. Specifically, by using the fixtures for both illumination and to interrogate the space, source-to-sensor communication becomes possible at very low cost. In this paper, we present a novel framework to estimate the occupancy distribution in an indoor space using color-controllable LED fixtures (the same fixtures providing the illumination, simultaneously) and sparsely distributed non-imaging color sensors. By modulating randomly generated perturbation patterns onto the drive signals of the LED fixtures and measuring the changes in the color sensor responses, we are able to recover a light transport model for the room. Two approaches are proposed to estimate the spatial distribution of the occupancy, based on a light blockage model and a light reflection model, respectively. These two approaches, which can be combined, can faithfully reveal the occupancy scenario of the indoor space, while preserving the privacy of its occupants. An occupancy-sensitive lighting system can be designed based on this technique.

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ZZ→ℓ+ℓ−ℓ′+ℓ′− cross-section measurements and search for anomalous triple gauge couplings in 13 TeV pp collisions with the ATLAS detector

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Physical Review D 2018年第3期97卷 032005-032005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 Y. Afik 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 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. B 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 Oklahoma 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 Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom 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 Oregon USA Department of Physics Stockholm University 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 AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA 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 Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Italy Dipartimento di Fisica Un

Measurements of ZZ production in the ℓ+ℓ−ℓ′+ℓ′− channel in proton–proton collisions at 13 TeV center-of-mass energy at the Large Hadron Collider are presented. The data correspond to 36.1 fb−1 of collisions collected by the ATLAS experiment in 2015 and 2016. Here ℓ and ℓ′ stand for electrons or muons. Integrated and differential ZZ→ℓ+ℓ−ℓ′+ℓ′− cross sections with Z→ℓ+ℓ− candidate masses in the range of 66 GeV to 116 GeV are measured in a fiducial phase space corresponding to the detector acceptance and corrected for detector effects. The differential cross sections are presented in bins of twenty observables, including several that describe the jet activity. The integrated cross section is also extrapolated to a total phase space and to all standard model decays of Z bosons with mass between 66 GeV and 116 GeV, resulting in a value of 17.3±0.9[±0.6(stat)±0.5(syst)±0.6(lumi)] pb. The measurements are found to be in good agreement with the standard model. A search for neutral triple gauge couplings is performed using the transverse momentum distribution of the leading Z boson candidate. No evidence for such couplings is found and exclusion limits are set on their parameters.

关键词： Electroweak interaction W & Z bosons Particle data analysis

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LSShare: an efficient multiple query optimization system in the cloud

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Distributed and Parallel Databases 2014年第4期32卷 583-605页

作者： Xing Ge Bin Yao Minyi Guo Changliang Xu Jingyu Zhou Chentao Wu Guangtao Xue Shanghai Key Laboratory of Scalable Computing and Systems Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai China Alibaba Cloud Computing Company Hangzhou China

Multiple query optimization (MQO) in the cloud has become a promising research direction due to the popularity of cloud computing, which runs massive data analysis queries (jobs) routinely. These CPU/IO intensive analysis queries are complex and time-consuming but share common components. It is challenging to detect, share and reuse the common components among thousands of SQL-like queries. Previous solutions to MQO, heuristic or genetic based, are not appropriate for the large growing query set situation. In this paper, we develop a sharing system called LSShare using our proposed Lineage-Signature approach. By LSShare, we can efficiently solve the MQO problem in a recurring query set situation in the cloud. Our system has been prototyped in a distributed system built for massive data analysis based on Alibaba’s cloud computing platform ( http://***/ ). Experimental results on real data sets demonstrate the efficiency and effectiveness of the proposed approach.

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QoS-aware Node Selection Algorithm for Routing Protocols in VANETs

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Procedia computer Science 2014年 40卷 66-73页

作者： Ahmad Mostafa Anna Maria Vegni Asitha Bandaranayake Dharma P. Agrawal Center for Distributed and Mobile Computing Department of Electrical Engineering and Computing Systems University of Cincinnati Cincinnati OH 45221 – 0030 USA Department of Engineering COMLAB Telecommunications Laboratory Roma Tre University 00146 Rome Italy

In this paper, we present a QoS-Aware node Selection Algorithm (QASA) for routing protocols to be suitable for a particular class of opportunistic networks, when applied to the Vehicular Ad hoc Networks. Our algorithm aims to select the next-hop vehicle to communicate with, by exploiting the “bridging approach” for message forwarding i.e. , vehicles on the east (west) select from west (east). The QoS metrics that are being optimized are the throughput in the network, and packets end-to-end delay. In order to provide the best network performance, the algorithm utilizes a probabilistic rebroadcasting scheme based on different network parameters including vehicle density, inter-vehicle distance, and the transmission range for the vehicles. Moreover, QASA utilizes a transmission range-based metric that can be changed as per application requirements, whether it is high throughput or minimum end-to-end delay. Simulation results show the effectiveness of our approach in terms of improved QoS metrics in different vehicular network scenarios.

关键词： VANETs Reliability Probability-based routing Quality-of-Service

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Comparative Analysis of Energy Control Techniques for DC Microgrid and Pulsed Power Load Applications

Comparative Analysis of Energy Control Techniques for DC Mic...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Mustafa Farhadi Ali Mazloomzadeh Osama Mohammed Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University

ISBN: (纸本)9781479940318

DC Microgrid power systems are becoming increasingly common in many applications. In this work, the comparative analysis of different energy control techniques for a dc microgrid with pulsed power loads is considered. A laboratory scale hybrid dc microgrid is developed to evaluate the performance of the energy control methods. In the proposed dc microgrid, a supercapacitor bank, acting as power buffer, and a pulse load are directly connected to a common coupling dc bus while the injected power to the grid is regulated through power converters. This microgrid is connected to an AC grid test-bed to further analyze the consequence of the pulse loads. The test results show that the energy control methods are different in terms of their maximum power requirement, their performance on the dc microgrid, and their effects on the ac grid.

关键词： Hybrid power source Power converter Supercapacitor Frequency fluctuation

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Optimized-Fuzzy MPPT Controller Using GA for Stand-alone Photovoltaic Water Pumping System

Optimized-Fuzzy MPPT Controller Using GA for Stand-alone Pho...

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Annual Conference of the IEEE Industrial Electronics Society

作者： A. A. S. Mohamed Alberto Berzoy Osama Mohammed Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University

ISBN: (纸本)9781479940318

This paper presents a comparative study among different Maximum Power Point Trackers for Photovoltaic Water Pumping load. Comprehensive analysis and simulation of KC-120-1 PV module (source), Kyocera SD 12-30 solar pump (load) and storage tank (storage) were conducted. Multi-objective optimization based on Genetic Algorithms were performed for two MPPT techniques: perturb and observe (P&O) and fuzzy technique. A GA cost function is developed and explained for optimization purposes. The fitness function considers the irradiance variations of two climates condition (sunny and cloudy days), however the algorithm can be easily changed for considering more cases. A comparative analysis of both techniques was perform before and after optimization based on the system energy error and the water flow rate. It is demonstrated that GA-optimized Fuzzy algorithm presents a more appropriate behavior under the different climatic conditions.

关键词： PVPS MPPT Genetic Algorithms Fuzzy Controller

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Power-aware Mapping for 3D-NoC Designs Using Genetic Algorithms

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Procedia computer Science 2014年 34卷 538-543页

作者： Haytham Elmiligi Fayez Gebali M. Watheq El-Kharashi Computing Science Department Thompson Rivers University Kamloops BC Canada Department of Electrical and Computer Engineering University of Victoria Victoria BC Canada Department of Computer and Systems Engineering Ain Shams University Cairo 11517 Egypt

Scalable 3D Networks-on-Chip (NoC) designs are needed to match the ever-increasing communication and low-power demands of large-scale multi-core applications. However, chip designers do not have the necessary tools to implement their applications efficiently at different layers of the design hierarchy. A design methodology for low power 3D-NoCs applications is needed to achieve the best performance. To address this problem, we use Genetic Algorithms to find the best 3D-NoC mesh network mapping that achieves minimum power consumption for a given application. As a proof of concept, a case study of a multicore application that has 32 symmetric microprocessors is presented. We used Genetic Algorithms to calculate the fitness function and solve the optimization problem in less than four minutes, whereas it took over three days using exhaustive search and yet to find the minimum power consumption.

关键词： 3D-NoCs genetic algorithms IP mapping power modeling power optimization.

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Distributed Flywheel Energy Storage systems for Mitigating the Effects of Pulsed Loads

Distributed Flywheel Energy Storage Systems for Mitigating t...

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IEEE Power and Energy Society General Meeting

作者： Ahmed T. Elsayed Osama A. Mohammed Energy Systems Research Laboratory Department of Electrical and Computer Engineering Florida International University

ISBN: (纸本)9781479964161

This paper presents a distributed Flywheel Energy Storage System (FESS) for mitigating the effects of pulsed loads such as those exist in Shipboard Power systems (SPS). A comparison between distributed and centralized allocation of FESS was provided with and without the utilization of ultra-capacitors on the DC side. A model for hybrid AC/DC SPS with zonal distribution architecture was built in a simulation software. In order to accurately evaluate the performance of the system, three different case studies are presented with and without the FESS. The results of each case are analyzed and discussed. It can be shown that the distributed allocation of FESS can reduce the overloading on the generators and frequency fluctuations.

关键词： Flywheel energy storage system (FESS) PMSM Pulsed load Shipboard power system

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Fusion Coherence: Scalable Cache Coherence for Heterogeneous Kilo-Core System

Fusion Coherence: Scalable Cache Coherence for Heterogeneous...

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10th Annual Conference of Advanced computer Architecture, ACA 2014

作者： Pei, Songwen Kim, Myoung-Seo Gaudiot, Jean-Luc Xiong, Naixue Department of Computer Science and Engineering University of Shanghai for Science and Technology Shanghai 200093 China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Department of Electrical Engineering and Computer Science University of California Irvine CA 92697 United States School of Computer Science Colorado Technical University Springs CO 80907 United States

ISBN: (纸本)9783662444900

Future heterogeneous systems will integrate CPUs and GPUs on a single chip to achieve high computing performance as well as high throughput. In general, it would discard the current discrete pattern and will build a uniformed shared memory system avoiding explicit data movement among CPUs and GPUs connected by high throughput NoC. We propose a scalable cache coherence solution Fusion Coherence for Heterogeneous Kilo-core System Architecture by integrating CPUs and GPUs on a single chip to mitigate the coherence bandwidth side effects of GPU memory requests as well as overhead of copying data among memories of CPUs and GPUs. The Fusion Coherence coalesces L3 data cache of CPUs and GPUs based on a uniformed physical memory, further integrates a region directory and cuckoo directory into two levels of cache coherence directory without modifying cache coherence protocol. According to the experimental results with a subset of Rodina benchmarks, it is effective to decrease the overhead of data transfer and get an average execution speedup by 2.4x. The highest speedup is approximate to 4x for data-intensive applications. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Program processors

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ICEPOLE: High-speed, hardware-oriented authenticated encryption

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8731卷 392-413页

作者： Morawiecki, Pawel Gaj, Kris Homsirikamol, Ekawat Matusiewicz, Krystian Pieprzyk, Josef Rogawski, Marcin Srebrny, Marian Wójcik, Marcin Institute of Computer Science Polish Academy of Sciences Poland Section of Informatics University of Commerce Kielce Poland Department of Computing Macquarie University Australia Electrical Engineering and Computer Science School Queensland University of Technology Brisbane Australia Cryptographic Engineering Research Group George Mason University United States Cryptography and Information Security Group University of Bristol United Kingdom Cadence Design Systems San Jose United States Intel Gdańsk Poland

This paper introduces our dedicated authenticated encryption scheme ICEPOLE. ICEPOLE is a high-speed hardware-oriented scheme, suitable for high-throughput network nodes or generally any environment where specialized hardware (such as FPGAs or ASICs) can be used to provide high data processing rates. ICEPOLE-128 (the primary ICEPOLE variant) is very fast. On the modern FPGA device Virtex 6, a basic iterative architecture of ICEPOLE reaches 41 Gbits/s, which is over 10 times faster than the equivalent implementation of AES-128-GCM. The throughput-to-area ratio is also substantially better when compared to AES-128-GCM. We have carefully examined the security of the algorithm through a range of cryptanalytic techniques and our findings indicate that ICEPOLE offers high security level. © International Association for Cryptologic Research 2014.

关键词： Field programmable gate arrays (FPGA)

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