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Multiple level set region based single line road extraction

Multiple level set region based single line road extraction

引用

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Khondekar Mahabub Akram Mirza M. Lutfe Elahi M. Ashraful Amin Department of Electrical Engineering and Computer Science North South University Bangladesh Computer vision and cybernetics research group Independent University Bangladesh

ISBN: (纸本)9781479902590

A new region detection approach for GIS system has been proposed to detect the roads in image. After extraction of road parts from the other parts of image, binarized road features are mined and then used to get a single line road features by thinning. The pruning of the extra unrelated branches and linking of the related branches have been done using Bottom-Top Nega-Max Formulation and Gradient Circum-circle Based Linking. Our proposed method shows high accuracy in detecting roads from satellite images. We have proved by experiment and analysis that proposed method of road extraction is best suited to deal with an average of 95.6% accuracy.

关键词： Abstracts Image segmentation Accuracy Minimization

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The capacity region of a product of two unmatched physically degraded gaussian broadcast channels with three individual messages and a common message

The capacity region of a product of two unmatched physically...

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作者： Gohary, Ramy H. Davidson, Timothy N. Communications Research Centre Ottawa ON K1P 6M1 Canada Department of Systems and Computer Engineering Carleton University Ottawa ON K1S 5B6 Canada Department of Electrical and Computer Engineering McMaster University Hamilton ON L8S 4K1 Canada

This paper considers a Gaussian broadcast channel with two unmatched degraded components, three individual messages, and a common message that is intended for all three receivers. It is shown that for this channel, superposition coding with Gaussian signalling is sufficient to achieve every point in the capacity region. © 2012 IEEE.

关键词： Gaussian distribution

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Wide area monitoring and control for voltage assessment in smart grids with distributed generation

Wide area monitoring and control for voltage assessment in s...

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Innovative Smart Grid Technologies (ISGT)

作者： Ahmed Mohamed Ahmed Ghareeb Tarek Youssef Osama A. Mohammed Energy Systems Research Laboratory at the Electrical and Computer Engineering Department Florida International University Miami FL USA Electrical and Computer Engineering Department College of Engineering and Computing Florida International University Miami FL USA Electrical Engineering Department Florida International University USA Electrical and Computer Engineering and the Director of the Energy Systems Research Laboratory Florida International University USA

In this paper, the application of wide area measurement and control for voltage assessment of hybrid AC/DC smart grid is investigated. The power available from renewable energy assets and storage elements on the microgrids is utilized to maintain system voltage stability. The system under study consists of two DC microgrids coupled to a multi-bus AC system. The supervisory controller of each of the two microgrids continuously communicates with the main controller of the AC grid, sending the available amount of apparent power and receiving power commands. The AC grid is monitored and controlled using a wide area measurement system in which measurements of the different nodes in the system are synchronized to a unified pulse signal. In case of voltage violation at any of the buses, the minimum reactive power needed from each of the micrgrids in order to restore the voltage magnitude to a value that is between the permissible limits is determined in real time by solving an optimization problem. Simulation, as well as experimental, results are included to verify the validity of the proposed wide area control technique.

关键词： Microgrids Reactive power Genetic algorithms Smart grids Monitoring Voltage control

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EkuSim: Realistic evacuation simulation with a fast hierarchical algorithm

EkuSim: Realistic evacuation simulation with a fast hierarch...

引用

Grand Challenges in Modeling and Simulation Symposium, GCMS 2013, Part of the 2013 Summer Simulation Multiconference, SummerSim 2013

作者： Nihm, Alexander Drews, Andre Möller, Dietmar P. F. Vakilzadian, Hamid University of Hamburg MIN Faculty Computer Engineering Research Group Germany Clausthal University of Technology Institute of Applied Stochastics and Operations Research Erzstr. 1 D-38670 Clausthal-Zellerfeld Germany University of Nebraska-Lincoln Department of Electrical United States

ISBN: (纸本)9781627482752

The evacuation simulation tool EkuSim based on a hierarchical path finding algorithm is presented. The tile-based algorithm allows pre-processing of the simulation model to increase the speed of the simulation. It can also be used for parallel computation. For evacuation scenarios, entities follow certain rules to describe a realistic panic behavior. The entities try to find emergency exits by avoiding drawbacks like seats or walls. Using a Graphical User Interface (GUI), an evacuation scenario can easily be built and the simulated results displayed. As example of an application is the illustration of evacuation scenarios in an aircraft using realistic layouts The tile-based hierarchical pathfinding algorithm can result in increased processing speed compared to the well-established algorithms, depending on the simulation problem. Simulating the evacuation of an aircraft shows that a uniform spatial distribution failing of emergency doors has only a small influence on evacuation time.

关键词： Graphical user interfaces

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All-optical logic gates with quantum-dot semiconductor optical amplifiers

All-optical logic gates with quantum-dot semiconductor optic...

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International Conference on Transparent Optical Networks

作者： Kyriakos E. Zoiros Lightwave Communications Research Group Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece

In this invited paper we review the progress on all-optical gates that exploit quantum-dot semiconductor optical amplifiers (QD-SOAs) as nonlinear elements. In particular we focus on our research conducted in this cutting-edge technological field, which relies on QD-SOAs incorporated in a Mach-Zehnder Interferometer (MZI). We present results on an extensive set of Boolean operations executed in the optical domain by properly configuring and driving the QD-SOA-based MZI. We address the feasibility of these logic gates and we give guidelines for their design so that they can be realized with logical correctness and high performance. Finally we report on some characteristic applications of enhanced functionality where these fundamental gates are employed as core logic units to form complex all-optical circuits.

关键词： Logic gates Semiconductor optical amplifiers Quantum dots Mach-Zehnder interferometers Optimized production technology Stimulated emission

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Application of WLF to OFDMA MU-MIMO systems I: Frequency-domain equalization

Application of WLF to OFDMA MU-MIMO systems I: Frequency-dom...

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10th IEEE International Symposium on Wireless Communication systems 2013, ISWCS 2013

作者： Xiao, Pei Lin, Zihuai Wu, Yi Schneider, Christian Centre for Communication Systems Research University of Surrey United Kingdom School of Electrical and Computer Engineering University of Sydney NSW 2006 Australia Department of Telecommunication and Network Engineering Fujian Normal University China Institute of Information Technology Technische Universiẗat Ilmenau Germany

ISBN: (纸本)9783800735297

This paper presents a novel iterative receiver strategy incorporating widely linear filtering for uplink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser multiple-input, multiple-output (MIMO) systems. The proposed iterative receiver scheme achieves better performance without the loss of spectrum efficiency compared to the conventional iterative receivers;The superiority of the investigated scheduler coupled with the innovative iterative receiver scheme over conventional solutions is verified by both simulation and analytical results. © VDE Verlag GMBH.

关键词： Frequency division multiple access

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How many queries will resolve common randomness?

How many queries will resolve common randomness?

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IEEE International Symposium on Information Theory

作者： Himanshu Tyagi Prakash Narayan Department of Electrical and Computer Engineering and the Institute for Systems Research University of Maryland College Park MD USA

ISBN: (纸本)9781479904440

A set of m terminals, observing correlated signals, communicate interactively to generate common randomness for a given subset of them. Knowing only the communication, how many direct queries of the value of the common randomness will resolve it? A general upper bound, valid for arbitrary signal alphabets, is developed for the number of such queries by using a query strategy that applies to all common randomness and associated communication. When the underlying signals are independent and identically distributed repetitions of m correlated random variables, the number of queries can be exponential in signal length. For this case, the mentioned upper bound is tight and leads to a single-letter formula for the largest query exponent, which coincides with the secret key capacity of a corresponding multiterminal source model. In fact, the upper bound constitutes a strong converse for the optimum query exponent, and implies also a new strong converse for secret key capacity. A key tool, estimating the size of a large probability set in terms of Rényi entropy, is interpreted separately, too, as a lossless block coding result for general sources. As a particularization, it yields the classic result for a discrete memoryless source.

关键词： Upper bound Entropy Source coding Signal resolution Observers Block codes

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systems of systems engineering: A research Imperative

Systems of Systems Engineering: A research Imperative

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IEEE International Conference on System Science and engineering

作者： Michael Henshaw Carys Siemieniuch Murray Sinclair Sharon Henson Vishal Barot Mo Jamshidi Dan Delaurentis Cornelius Ncube Soo Ling Lim Huseyin Dogan Loughborough University/School of Electronic Electrical and Systems Engineering Engineering Systems of Systems (ESoS) Group University of Texas/Department of Electrical and Computer Engineering One UTSA Circle Purdue University/Center for Integrated Systems in Aerospace Bournemouth University/Software Systems Research Centre

ISBN: (纸本)9781479900084

systems of systems engineering constitutes a major challenge for the 21st Century and research into this topic has become an imperative. The Support Action, T-AREA-SoS has been initiated by the European Commission to develop a research agenda in systems of systems (SoS) that will inform future investment in this area. Through an extensive consultation and review, a number of SoS capability gaps have been identified. Through structuring and subsequent consultation, these have been developed into twelve research themes the detailed areas of which are mapped to the three SoS characteristics of control, evolution, and emergent behaviour. A framework is presented through which researchers can develop a research campaign in SoS.

关键词： systems engineering and theory systems engineering System of systems consultation Consultation European Commission

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Grand challenges in modeling and simulation: Expanding our horizons 13

Grand challenges in modeling and simulation: Expanding our h...

引用

2013 ACM SIGSIM Conference on Principles of Advanced Discrete Simulation, SIGSIM-PADS 2013

作者： Taylor, Simon J.E. Balci, Osman Cai, Wentong Loper, Margaret L. Nicol, David M. Riley, George ICT Innovation Group Department of Information Systems and Computing Brunel University Uxbridge United Kingdom Department of Computer Science Virginia Tech. Blacksburg VA United States School of Computer Engineering Nanyang Technological University Singapore Singapore Information and Communications Lab. Georgia Tech. Research Institute Atlanta GA United States Information Trust Institute University of Illinois at Urbana-Champaign Urbana-Champaign IL United States School of Electrical and Computer Engineering Georgia Tech. Atlanta GA United States

ISBN: (纸本)9781450319201

There continues to be many advances in the theory and practice of Modeling and Simulation (M&S). However, some of these can be considered as Grand Challenges;issues whose solutions require significant focused effort across a community, sometimes with ground-breaking collaborations with new disciplines. In 2002, the first M&S Grand Challenges Workshop was held in Dagstuhl, Germany, in an attempt to focus efforts on key areas. In 2012, a new initiative was launched to continue these Grand Challenge efforts. Panel members of this third Grand Challenge present their views on M&S Grand Challenges. Themes presented in this panel include M&S Methodology;Agent-based M M&S in systems engineering;Cyber systems Modeling;and Network Simulation. © 2013 ACM.

关键词： Life cycle

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Application of WLF to OFDMA MU-MIMO systems II: Frequency-domain packet scheduling

Application of WLF to OFDMA MU-MIMO systems II: Frequency-do...

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10th IEEE International Symposium on Wireless Communication systems 2013, ISWCS 2013

作者： Lin, Zihuai Xiao, Pei Wu, Yi Schneider, Christian School of Electrical and Computer Engineering University of Sydney NSW 2006 Australia Centre for Communication Systems Research University of Surrey United Kingdom Department of Telecommunication and Network Engineering Fujian Normal University China Institute of Information Technology Technische Universität Ilmenau Germany

ISBN: (纸本)9783800735297

We propose a Mutual Information (MI) based spatial frequency domain packet scheduling algorithm for uplink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser multiple-input, multiple-output (MIMO) systems in this paper. The proposed scheduler is designed particularly for signal constellation constrained MIMO systems. The superiority of the investigated scheduler coupled with the innovative iterative receiver scheme over conventional solutions is verified by both simulation and analytical results. © VDE Verlag GMBH.

关键词： Frequency division multiple access

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