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A generalized net with an ACO-algorithm optimization component 1

8th International Conference on Large-Scale Scientific Computations,LSSC 2011

作者： Atanassova, Vassia Fidanova, Stefka Chountas, Panagiotis Atanassov, Krassimir Institute of Information and Communication Technologies Bulgarian Academy of Sciences Acad. G. Bonchev Str. bl. 2 Sofia 1113 Bulgaria University of Westminster Dept. of Business Information Systems School of Electronics and Computer Science 115 New Cavendish Street London W1W 6UW United Kingdom Bioinformatics and Mathematical Modelling Dept. Institute of Biophysics and Biomedical Engineering Bulgarian Academy of Sciences Acad. G. Bonchev Str. bl. 105 Sofia 1113 Bulgaria

ISBN: (数字)9783642298431

ISBN: (纸本)9783642298424

In the paper we describe a generalized net GACOA realizing an arbitrary algorithms for ant colony optimization. In this sense, this net is universal for all standard algorithms for ant colony optimization, since it describes the way of functioning and results of their work. Then, we discuss the way of constructing a GN that includes the GACOA as a subnet. In this way, we ensure the generalized net tokens' optimal transfer with regard to the results of GACOA. Thus, we construct a generalized net, featuring an optimization component and thus optimally functioning. © 2012 Springer-Verlag.

关键词： Ant colony optimization

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Synchronization Method for Stereoscopic 3D Video Broadcasting through Heterogeneous Network

Synchronization Method for Stereoscopic 3D Video Broadcastin...

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IEEE International Conference on computer and Information Technology

作者： Kideok Kwon Hyeonjun Jeong Younghwan Yoo Ryulsung Kim Gwangsoon Lee Won-Sik Cheong Namho Hur Dept. of Computer Engineering Pusan National University Broadcasting Systems Research Department ETRI

ISBN: (纸本)9781467348737

This paper proposes a method to provide the frame synchronization for the high quality 3D broadcasting service in a mobile broadcasting system. In this method, left and right video frames are delivered through a heterogeneous network which consists of a mobile network and a broadcasting network, to overcome the limited bandwidth of the broadcasting network. Then it is more difficult to synchronize the left and right video frames coming through different types of networks. In the beginning, the proposed method uses only the offset from the initial timestamp of RTP (Real Time Protocol) to determine the order of frames and to find the pair of a left and a right frame that must be played at the same time. However, the method using the initial timestamp only may not resolve the PCR (Program Reference Clock) discontinuity problem of the broadcasting system. Thus the proposed method is enhanced to periodically send RTCP (Real Time Control Protocol) which includes current timestamps of a pair of frames on mobile and broadcasting networks. Additionally, a new signaling method is introduced for a mobile device to request a 3D service and to get the initial RTP timestamp.

关键词： 3D Video ATSC-MH OMA-BCAST Stereoscopic Synchronization

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Scheduling Measurements and Controls over Networks - Part I: Rollout Strategies for Protocol Design

Scheduling Measurements and Controls over Networks - Part I:...

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American Control Conference

作者： D. J. Antunes W. P. M. H. Heemels J. P. Hespanha C. J. Silvestre Hybrid and Networked Systems Group Department of Mechanical Engineering Eindhoven University of Technology the Netherlands Dept. of Electrical and Computer Eng. University of California Santa Barbara CA 93106-9560 USA Institute for Systems and Robotics Instituto Superior Tecnico 1046-001 Lisboa Portugal

ISBN: (纸本)9781457710957

We consider networked control systems where nodes (sensors, actuators, and controller) are connected via a communication network that allows only one user to transmit at a given time. We tackle the scheduling problem of deciding which node should access the network at each transmission time so as to optimize a quadratic performance objective. Using the framework of dynamic programming, we propose a rollout strategy by which the node elected to transmit at each step is the one that leads to optimal performance over a lookahead horizon assuming that from then on nodes transmit in a periodic order. The proposed strategy leads to a protocol in which a conic state partition determines which node transmits at each step and which can outperform any given periodic protocol. Moreover, we show that some of the protocols previously proposed in the literature, such as the Maximum Error First and the dynamic protocols, can be viewed as rollout strategies for a certain dynamic programming problem. The advantages of using rollout strategies are illustrated by a numerical example.

关键词： Protocols Networked control systems Actuators Sensors Vectors Dynamic programming Stability analysis

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A novel fall activity recognition method for wireless sensor networks

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International Journal of u- and e- Service, Science and Technology 2012年第4期5卷 1-14页

作者： Wang, Jin Zhang, Zhongqi Zheng, Yuhui Wu, Menglin Kim, Jeong-Uk School of computer and software Nanjing University of information science and technology Nanjing 210044 China College of Electronics and Information Engineering Nanjing University of Technology Nanjing 211816 China Dept. of Energy Grid Sangmyung University Seoul 110-743 Korea Republic of

Healthcare targeted for home activity is playing an important role in our daily lives as the number of elderly person is increasing sharply. Researches pointed out that one third of 65-and-over aged person fall per-year. Some detection related work made use of accelerometers or gyroscopes, some use passive infrared or acoustic sensors. But there were some false alarms. Falls can be an unpredicted and dangerous event. A system based on wireless sensor networks to detect the falls for old and resident was proposed in this paper. We provided a method to minimize the false alarm rate of fall detection as well. Besides, we can detect falls that did not trigger the alarm which was intervened by outside forces.

关键词： Wireless sensor networks

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Exposing Resources as Web services: a Performance Oriented Approach

Exposing Resources as Web services: a Performance Oriented A...

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International Symposium on Performance Evaluation of computer and Telecommunication systems

作者： Ravishankar Kanagasundaram Shikharesh Majumdar Marzia Zaman Pradeep Srivastava Nishith Goel Dept. of Systems and Computer Engineering Carleton University Ottawa Canada Cistel Technology Ottawa Canada

ISBN: (纸本)9781618399823;1618399829

This paper focuses on exposing computing and database resources as Web services for providing inter-operability among clients and servers that uses diverse technologies. A systematic performance analysis of two technologies, the RESTful Web Service and the SOAP-based Web service used for exposing resources as Web services is reported. A novel Hybrid Web service that combines the advantages of both RESTful and SOAP-based Web services is proposed and analyzed.

关键词： RESTful Web service SOAP-based Web service Web service Performance Inter-operability System performance

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A model-driven framework for ETL process development

A model-driven framework for ETL process development

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14th ACM International Workshop on Data Warehousing and Online Analytical Processing, DOLAP'11

作者： El Akkaoui, Zineb Zimányi, Esteban Mazón, Jose-Norberto Trujillo, Juan Dept. of Computer and Decision Engineering Université Libre de Bruxelles Brussels Belgium Dept. of Software and Computing Systems University of Alicante Alicante Spain

ISBN: (纸本)9781450309639

ETL processes are the backbone component of a data warehouse, since they supply the data warehouse with the necessary integrated and reconciled data from heterogeneous and distributed data sources. However, the ETL process development, and particularly its design phase, is still perceived as a time-consuming task. This is mainly due to the fact that ETL processes are typically designed by considering a specific technology from the very beginning of the development process. Thus, it is difficult to share and reuse methodologies and best practices among projects implemented with different technologies. To the best of our knowledge, no attempt has been yet dedicated to harmonize the ETL process development by proposing a common and integrated development strategy. To overcome this drawback, in this paper, a framework for model-driven development of ETL processes is introduced. The benefit of our framework is twofold: (i) using vendor-independent models for a unified design of ETL processes, based on the expressive and well-known standard for modeling business processes, the Business Process Modeling Notation (BPMN), and (ii) automatically transforming these models into the required vendor-specific code to execute the ETL process into a concrete platform. © 2011 ACM.

关键词： Data warehouses

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Medium term effects of a ketogenic diet and a Mediterranean diet on resting energy expenditure and respiratory ratio

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BMC Proceedings 2012年第3期6卷 1-2页

作者： Antonio Paoli Andrea Parmagnani Antonino Bianco Alessandra Lodi Lorenzo Cenci Biomedical Engineering Laboratory Institute of Communication and Computer Systems National Technical University of Athens Athens Greece Dept. of Sports and Exercise Science (DISMOT) University of Palermo Italy Pharmaceutical and Chemistry and Technologies University of Padova Italy Tisanoreica Research Center Lonigo Vicenza Italy

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Average Symbol Error Probability in the Presence of Network Interference and Noise

Average Symbol Error Probability in the Presence of Network ...

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IEEE International Conference on Communications

作者： Cristina Merola Alessandro Guidotti Marco Di Renzo Fortunato Santucci Giovanni E. Corazza University of L'Aquila Dept. of Electrical and Information Engineering Center of Excellence DEWS University of Bologna Dept. of Electronics Computer Engineering and Systems (DEIS) L2S UMR 8506 CNRS - SUPELEC - Univ Paris-Sud Laboratory of Signals and Systems (L2S) French National Center for Scientific Research (CNRS) Ecole Superieure d'Electricite (SUPELEC) University of Paris-Sud XI (UPS)

ISBN: (纸本)9781457720529

In this paper, we introduce a new framework to compute the Average Symbol Error Probability (ASEP) of an intended wireless communication system subject to network interference and noise. The interfering nodes are assumed to be randomly distributed in the 2D Euclidean plane according to a homogeneous Poisson point process. Our framework is applicable to performance prediction and optimization of, e.g., emerging heterogeneous cellular and cognitive radio networks. More specifically, we move from and generalize the semi-analytical framework recently introduced by Pinto and Win [1], and develop a new mathematical model which offers a simple single-integral expression of the ASEP under very general channel and interference conditions. The framework is exact, avoids Monte Carlo methods for its computation, and is applicable to asynchronous and synchronous scenarios. Our numerical examples show that both setups have almost the same performance, and that the ASEP in the presence of synchronous interference is a very tight upper-bound of the ASEP in the presence of asynchronous interference. This is a relevant result, as we show in this paper that in the former case all parameters of interest can be computed in closed-form. Our analytical derivation is substantiated through extensive Monte Carlo simulations.

关键词： Error probability Monte Carlo technique Noise Frameworks interference interference Asynchronous ABER PINTO performance prediction point operation presences

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Knowledge representation meets simulation to investigate memory problems after seizures

Knowledge representation meets simulation to investigate mem...

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Lecture Notes in computer Science

作者： Zheng, Youwei Schwabe, Lars Universität Rostock Dept. of Computer Science and Electrical Engineering Adaptive and Regenerative Software Systems 18051 Rostock Germany

ISBN: (纸本)9783642236044

Despite much efforts in data and model sharing, the full potential of community-based and computer-aided research has not been unleashed in neuroscience. Here we argue that data and model sharing shall be complemented with machine-readable annotations of scientific publications similar to the semantic web, because this would allow for automated knowledge discovery as recently demonstrated using so-called "robot scientists". We consider a particular example, namely the potentially disruptive role of synaptic plasticity for memories during paroxysmal brain activity. A systematic simulation study is performed where we compare the combinations of different rules of spike-timing-dependent plasticity (STDP) and different kinds of paroxysmal activity in terms of how they affect memory retention. We translate the simulation results into a Bayesian network and show how new empirical evidence can be used in order to infer currently unknown model properties (the STDP mechanisms and the nature of paroxysmal brain activity). © 2011 Springer-Verlag.

关键词： Knowledge representation

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Extract Knowledge from Site-sampled Data Sets and Fused Hierarchical Neural Networks for Detecting Cardiovascular Diseases

Extract Knowledge from Site-sampled Data Sets and Fused Hier...

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International Conference on Biomedical engineering and Biotechnology (iCBEB)

作者： Jun Shi Booma Devi Sekar Ming Chui Dong Xiang Yang Hu University of Macau Taipa Macau MO Dept. of EEE Faculty of Science & Technology University of Macau Macau China Institute of Systems and Computer Engineering Macau China The Fifth Affiliated Hospital of Sun Yat-sen University ZhuHai China

For purpose of detecting cardiovascular diseases (CVDs) hierarchically via hemodynamic parameters (HDPs) derived from sphygmogram, a fused hierarchical neural networks (FHNNs) scheme is proposed, which provides a noninvasive way to detect CVDs. To deduce conclusion via FHNNs, method of variance analysis is used to categorize HDPs. The categorized HDP sets are then inhaled by different sub neural networks (sub-NNs) of FHNNs according to importance and relevance of sets, and outputs of former sub-NNs are inhaled as inputs of latter sub-NNs, so that FHNNs have higher overall accuracy, especially in dealing with mixed CVDs. The sub-NNs are implemented by probabilistic neural networks (PNNs) or learning vector quantization networks (LVQ) due to their diverse advantages in dealing with different HDP categories. The preliminary testing results on site sampled data sets prove that the proposed method is promising for detecting CVDs.

关键词： Accuracy Training Medical diagnostic imaging Fuzzy neural networks Vectors Neural networks Cardiovascular diseases

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