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Optimal performance for detection systems in wireless passive sensor networks

Optimal performance for detection systems in wireless passiv...

引用

Mediterranean Conference on Control and Automation (MED)

作者： Ashraf Tantawy Xenofon Koutsoukos Gautam Biswas Institute for Software Integrated Systems (ISIS) Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN USA

Passive wireless sensors have emerged as a new technology to measure a vast majority of phenomena in our daily life. Passive sensors require no power source, and therefore their application domains are numerous, including health care, infrastructure protection, and national security, among many others. The deployment of wireless passive sensors and their readers has changed how detection needs to be performed. Passive sensors cannot pre-process the measurements as they have limited computational power. Therefore, no local decision is taken. Also, the reader polls the information from multiple sensors at the same time, and this causes collisions and hence packet drops and delays. In this paper, we formulate the detection performance, with non-ideal channels, in a probabilistic way, and compare with classical detection performance. We design an optimal adaptive Neyman-Pearson detector, given the channel probabilistic model, by formulating and solving a constrained optimization problem.

关键词： Wireless sensor networks Sensor systems Sensor phenomena and characterization Communication system security Medical services Power system protection National security Power measurement Delay effects Detectors

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Gigabit Ethernet based substation under IEC61850 standard

Gigabit Ethernet based substation under IEC61850 standard

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International Conference on computer, Control and Communication

作者： Ali Raza Khalil Ullah Saleem Ahmed Salman Ahmed Hyuk-Soo Jang Hyo-Sik Yang Department of Computer Software Myongji University Yongin Korea Department of Electronics and Communication Engineering Myongji University Yongin Korea Department of Computer Systems Engineering Mehran University Jamshoro Pakistan Department of Computer Engineering Sejong University Seoul South Korea

ISBN: (纸本)9781424433131

Communication architecture for substation automation is one of the challenging and subtle tasks to address in order to visualize the substation into digital world under the umbrella of IEC61850. Communication paradigm for substation automation demands critical importance because of two reasons; as communication arena is changing day by day so it is convenient to opt for something that is simple to deploy and incur a less cost in terms of time and asset when migration is to be considered since data-intensive applications drive the incremental demand for bandwidth as per growing need with the expansion of concerned network and last but not least the interoperability as it is one of the core constrained put by IEC61850 for substation automation. So it is viable to consider Ethernet as the most promising solution for the communication architecture of substation automation as Ethernet technology has changed the trend of communication network because of its availability, efficiency, and cost effectiveness on the other hand interoperability is assured based on the proven and highly deployed industrial Ethernet. This paper presents analysis and the crucial need for the deployment of Gigabit Ethernet in the substation and also presents how Ethernet technology can help in the substation automation as a long run solution in the changing arena of communication as Ethernet is one of the most pervasive communication technologies. In the end we have performed simulations in NS-2 to prove that our suggested communication paradigm is optimal in various regards by keeping into consideration the constraints imposed by IEC61850.

关键词： Ethernet networks Substation automation Communications technology Costs Access protocols Object oriented modeling Standards development Delay Standardization Availability

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Baseline efficiency in EPON based architecture to inter-network substations

Baseline efficiency in EPON based architecture to inter-netw...

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International Conference on computer, Control and Communication

ISBN: (纸本)9781424433131

The design of cost-effective, interoperable, and efficient communication architecture is indeed one of the pressing needs not only for the realization of substation automation (SA) as per specification of IEC61850 but also to inter-connect different substations with minimum cost to bring data from all substations on the single information highway thereby paving a smooth way to centralize all the available information. Ethernet technology has dramatically changed the communication trend because of its availability, efficiency, cost effectiveness, proven interoperability, and capability to drive on-demand bandwidth as per incremental growth and expansion of the network and on the other hand optical fiber communication system is one of the technically attractive communication medium due to its high capacity, efficiency, and security. Therefore, EPON (Ethernet Passive Optical Network) is the desired communication paradigm for the SA as it is shipped with the two most demanding communication trends, i.e., Ethernet and Fiber Optics in a single package. EPON underscores the importance of not only last-mile operability for inter-connecting different substations but can also play a vital role when ATM is replaced with GPON (Gigabit Passive Optical Network) for the long-haul communication thereby saving the cost of protocol conversion. In this paper we propose EPON as the desired communication architecture for inter-connecting substations and present analysis related to the significant importance of EPON with respect to the deployment in the substation environment both internally and externally. Finally we show the result of simulations to validate the deployment and effectiveness of our purposed communication paradigm for substation.

关键词： EPON Costs Ethernet networks Pressing Substation automation Automated highways Availability Bandwidth Optical fiber communication Communication system security

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The Optimal Searcher Path Problem with a Visibility Criterion in Discrete Time and Space

The Optimal Searcher Path Problem with a Visibility Criterio...

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International Conference on Information Fusion

作者： Michael Morin Irene Abi-Zeid Pascal Lang Luc Lamontagne Patrick Maupin Department of Computer Science and Software Engineering Universite Laval Department of Operations and Decision Systems Universite Laval Defence Research and Development Canada

ISBN: (纸本)9780982443804

In this paper, the problem of path planning for a ground search unit looking for an object of unknown location is considered. As in the classical optimal searcher path problem, the probability of finding the search object is the main criterion of optimality and the search unit is constrained by the environment topology that influences its choices for a navigable path as well as its detection capabilities. This paper proposes an extension to the classical optimal searcher path problem in discrete time and space by integrating inter-region visibility as an additional criterion. This new formulation allows a refinement in the discretization of the space in which a ground search unit evolves. A general mixed-integer programming model is proposed, and experimental results with a moving object in grid environments are discussed.

关键词： Optimal searcher path problem Visibility Path planning Search theory Mixed integer programming

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Newborn screening system based on adaptive feature selection and support vector machines

Newborn screening system based on adaptive feature selection...

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2009 9th IEEE International Conference on Bioinformatics and Bioengineering, BIBE 2009

作者： Hsieh, Sung-Huai Chien, Yin-Hsiu Shen, Chia-Ping Chen, Wei-Hsin Chen, Po-Hao Hsieh, Sheau-Ling Cheng, Po-Hsun Lai, Feipei Information Systems Office National Taiwan University Hospital Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan Network and Computer Centre National Chiao Tung University Hsin Chu Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taiwan Department of Software Engineering National Kaohsiung Normal University Taiwan Department of Medical Genetics National Taiwan University Hospital Taiwan

ISBN: (纸本)9780769536569

The clinical symptoms of metabolic disorders during neonatal period are often not apparent, if not treated early irreversible damages such as mental retardation may occur, even death. Therefore, practicing newborn screening is very important to prevent neonatal from these damages. In this paper, the newborn screening system used support vector machines (SVM) classification technique is proposed in place of cut-off value decision to evaluate the metabolic substances concentration raw data obtained from tandem mass spectrometry (MS/MS) and determine whether the newborn has some kinds of metabolic disorder diseases. On the basis of the proposed features, new analytic combinations are identified with superior discriminatory performance compared with the best published combinations. Classifiers built with the feature selection to find C3/C2, C3 and C16 of three key point features achieved diagnostic sensitivities, specificities and accuracy approaching 100%. © 2009 IEEE.

关键词： Support vector machines

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Three-layer architecture model (TLAM) for energy conservation in wireless sensor networks

Three-layer architecture model (TLAM) for energy conservatio...

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International Conference on Ultra Modern Telecommunications and Workshops (ICUMT)

作者： Sugam Sharma Mamta Rani Department of Computer Science Iowa State University Ames IA USA Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang Kuantan Malaysia

We propose a three-layer architecture model (TLAM) for wireless sensor networks. The first layer (bottom layer) consists of a network of resource-constrained sensor nodes deployed in the field. The second layer contains a set of resource-rich dynamic sink nodes forming an ad hoc network. The sinks at layer second are responsible to monitor and collect data from a region, called cluster. So the sinks at second layer are also knows as cluster sinks. At the third layer, there is a resource-rich static sink, known as zonal sink also, responsible for data collection from cluster sinks. A cluster sink may be few hops away from a static sensor node and moves to the vicinity of sensor nodes to collect the data. Each cluster sink continuously updates the zonal sink by propagating the collected data from the respective cluster. The zonal sink buffers the collected data and propagates to base station. Zonal sink is the one, responsible for data transmission from network environment to the base station, where the data is processed for further use. TLAM approach is robust, increases sensor life by allowing them to operate with a limited transmission range only and provides reduced delay as cluster sink continuously updates to zonal sink without query.

关键词： Energy conservation Wireless sensor networks Peer to peer computing Intelligent sensors Monitoring Base stations computer architecture Robustness Sensor systems Batteries

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Exploration of Slot Allocation for On-Chip TDM Virtual Circuits

Exploration of Slot Allocation for On-Chip TDM Virtual Circu...

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Euromicro Symposium on Digital System Design

作者： Li Tong Zhonghai Lu Hua Zhang School of Computer and Communication Engineering Tianjin University of Technology Tianjin China Department of Electronic Computer and Software Systems Royal Institute of Technology Stockholm Sweden

Time-Division-Multiplexing (TDM) Virtual Circuit (VC) has been proposed to guarantee the Quality-of-Service requirements in communication for Network-on-Chip. In this paper, we explore the design space of slot allocation for configuring TDM VCs. Specifically, we investigate different slot assignment schemes, namely, distributed, random and consecutive schemes, which have significant impact on the configurability. We also propose to construct disjoint connected VC sets to effectively reduce the search space. We have realized and integrated them into our VC configuration flow. Our experimental results suggest that the optimal slot allocation cycle equals to the ratio of the link bandwidth to the maximal VC bandwidth, and the distributed slot assignment scheme performs better than the random and consecutive schemes.

关键词： Time division multiplexing Circuits Virtual colonoscopy Switches Network-on-a-chip Bandwidth Routing computer networks System-on-a-chip Packet switching

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Weaving a network of architectural knowledge

Weaving a network of architectural knowledge

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Working IEEE/IFIP Conference on software Architecture

作者： Elena Navarro Carlos E. Cuesta Dewayne E. Perry Computing Systems Department University of Castilla-La Mancha Spain Department of Computing Languages and Systems II Rey Juan Carlos University Spain Department of Electrical and Computer Engineering The University of Texas at Austin

Recent research in software architecture has reasserted an emphasis on keeping track of design decisions and their rationales during the development process, that is, on maintaining architectural knowledge (AK). This knowledge takes the form of explicit assets, interrelated in decision networks. We argue that the relationships structuring these networks contain valuable information, specially those describing negative semantics. For this reason, we have extended an architecture-centric, model-driven development process, ATRIUM, which already provides support for AK, with new AK relationships to define AK as a network of knowledge.

关键词： Weaving Ontologies computer architecture software architecture Documentation computer networks software systems Process design Concrete Fabrics

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A utility model for peering of multi-provider content delivery services

A utility model for peering of multi-provider content delive...

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Conference on Local computer Networks (LCN)

作者： Mukaddim Pathan Rajkumar Buyya Grid Computing and Distributed Systems GRIDS Laboratory Department of Computer Science and Software Engineering University of Melbourne Parkville VIC Australia

Peering of Content Delivery Networks (CDNs) allow providers to rapidly scale-out to meet both flash crowds and anticipated increases in demand. Recent trends foster the need for a utility model for content delivery services to provide transparency, high availability, reduced investment cost, and improved content delivery performance. Analysis of prior work reveals only a modest progress in evaluating the utility for peering CDNs. In this paper, we introduce a utility model and measure the content-serving ability of the peering CDNs system. Our model assists in providing a customer view of the system's health for different traffic types. Our model also captures the traffic activities in the system and helps to reveal the true propensities of participating CDNs to cooperate in peering. Through extensive simulations we unveil many interesting observations on how the utility of the peering CDNs system is varied for different system parameters and provide incentives for their exploitation in the system design.

关键词： Costs Traffic control Investments Web server computer networks Grid computing Laboratories computer science software engineering Availability

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Energy Efficient Data Dissemination with ATIM Window and Dynamic Sink in Wireless Sensor Networks

Energy Efficient Data Dissemination with ATIM Window and Dyn...

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International Conference on Advances in Recent Technologies in Communication and Computing, ARTCom

作者： Sugam Sharma Mamta Rani S.B. Goyal Department of Computer Science Iowa State University USA Department of Computer Science Manav Rachna International University India Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang Malaysia

We illustrate the effective use of ATIM (ad hoc traffic indication message) window in static sensors to obtain potential energy savings for sensors during data dissemination in wireless sensor networks. The network consists of resource-rich mobile sink node and resource-constrained sensor nodes forming a square grid. Sink may be multihop away from the sensor nodes and in order to collect the data, it moves to the vicinity of the sensor nodes in the grid. Each sensor node in the grid uses an ATIM window and sleeps during that time to conserve energy. The sleeping sensor node wakes up at regular interval of time to read the beacon messages. If the message comes from sink, sensor node immediately reads the header part of query packet to check whether it is the targeted sensor. The targeted sensor further reads the remaining part of query packet and responds back to the sink with requested data. The rest of the sensor nodes just ignore the remaining part of the query packet and go to sleep mode. If the message comes from the peer sensor node, the neighbor nodes just ignore it. We consider an affordable wireless network system with four sensor nodes and one mobile sink. Mobile sink transfers the collected data directly to the control station.

关键词： Energy efficiency Wireless sensor networks Peer to peer computing Sensor systems Intelligent sensors computer networks computer science Energy consumption Batteries Temperature sensors

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