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检索条件"任意字段=IEEE International Conference on Distributed Computing in Sensor Systems DCoSS"

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A scalable distributed algorithm for shape transformation in multi-robot systems

A scalable distributed algorithm for shape transformation in...

引用

2007 ieee/RSJ international conference on Intelligent Robots and systems

作者： Ramprasad Ravichandran Geoffrey Gordon Seth Copen Goldstein Robotics Institute Carnegie Mellon University Pittsburgh PA USA Machine Learning Department Carnegie Mellon University Pittsburgh PA USA Computer Science Department Carnegie Mellon University Pittsburgh PA USA

distributed reconfiguration is an important problem in multi-robot systems such as mobile sensor nets and metamorphic robot systems. In this work, we present a scalable distributed reconfiguration algorithm, hierarchical median decomposition, to achieve arbitrary target configurations. Our algorithm is built on top of a novel distributed median consensus estimator. The algorithms presented are fully distributed and do not require global communication. We show results from simulations in an open source multi-robot simulator.

关键词： distributed algorithms Shape Multirobot systems Robot sensing systems Intelligent robots Mobile robots sensor systems Communication system control distributed computing USA Councils

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Soft computing Prediction Techniques in Ambient Intelligence Environments

Soft Computing Prediction Techniques in Ambient Intelligence...

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ieee international conference on Fuzzy systems (FUZZ-ieee)

作者： M. Javad Akhlaghinia Ahmad Lotfi Caroline Langensiepen School of Computing and Informatics Nottingham Trent University Nottingham UK

In this paper, a review of prediction techniques suitable for ambient intelligence environments is presented. Prediction challenges in sensor networks are considered in two phases including pattern extraction and rule matching. The prediction techniques reviewed in this paper come from two main research areas, namely, data mining and soft computing techniques. Moreover, a statistical modelling technique based on Markov chain is also considered. In this paper, we identify the centralized and distributed techniques of both data mining and soft computing areas. In addition, we identify the distributed approaches that utilize computational power of sensors in an ambient intelligence environment. Moreover, we show that some techniques use compression, regression or fuzzy methods to reduce the size of the collected sensory data.

关键词： Pervasive computing Ambient intelligence Intelligent sensors Data mining Informatics Pattern matching distributed computing Safety Automatic generation control Java

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On the Limitations of Random sensor Placement for distributed Signal Detection

On the Limitations of Random Sensor Placement for Distribute...

引用

ieee international conference on Communications (ICC)

作者： Z. Tu R. S. Blum Electrical and Computer Engineering Department Lehigh University Bethlehem PA USA

We consider the design of a sensor network for detecting an emitter who if present is known to be located in an interval but whose exact position is unknown. We seek to minimize the total system power consumption subject to detection performance constrains by carefully choosing the thresholds and positions of the sensors. Toward this goal, we propose an iterative algorithm for the optimization problem. Numerical results are given to provide insights into the design of such networks. We show that random sensor placement can perform poorly, in contrast to what many currently believe.

关键词： Signal detection Energy consumption sensor fusion sensor systems Iterative algorithms Communications Society Computer networks distributed computing Power engineering computing Design engineering

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A Fault Tolerant Topology Control Algorithm for Large-Scale sensor Networks

A Fault Tolerant Topology Control Algorithm for Large-Scale ...

引用

ieee international conference on Parallel and distributed computing, Applications and Technologies (PDCAT)

作者： Lili Wang Huihua Jin Jianxun Dang Yi Jin School of Computer Science Beihang University Beijing China

In this paper, we present a distributed Geography-based Fault Tolerant topology control algorithm (DGFT) for static large-scale wireless sensor networks. We introduce the scale-free characteristic of complex networks into the topology of large- scale wireless sensor networks to obtain robustness and time efficiency. DGFT enables wireless nodes to define the topology by neighbor relationship, based on certain initialized weights whose distribution follows a negative power law. We prove that the topology constructed under DGFT is strongly connected and bidirectional. Simulation studies show that the resulting topology has good network performance in terms of transmission delay and robustness.

关键词： Fault tolerance Network topology Large-scale systems Wireless sensor networks Robustness Delay Complex networks distributed computing Application software sensor phenomena and characterization

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IMPACT - A Family of Cross-Layer Transmission Protocols for Wireless sensor Networks

IMPACT - A Family of Cross-Layer Transmission Protocols for ...

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ieee international conference on Performance, computing and Communications (IPCCC)

作者： Marcin Brzozowski Reinhardt Karnapke Jorg Nolte System Design group IHP GmbH Germany Distributed Systems Operating Systems Group BTU Cottbus

For economic reasons sensor networks are often implemented with resource constrained micro-controllers and low-end radio transceivers. Consequently, communication is inherently unreliable and especially multi-hop communication suffers severely from packet losses. Transmission protocols that rely on implicit acknowledges for multi-hop communication are energy efficient but require symmetric communication links to work properly. In this paper we introduce IMPACT, a family of transmission protocols that rely on implicit acknowledges and employ a cross layer approach to handle asymmetric links.

关键词： Wireless application protocol Wireless sensor networks Media Access Protocol Routing protocols Costs Transport protocols Operating systems Radio transceivers Spread spectrum communication Access protocols

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A distributed sensor Relocatlon Scheme for Environmental Control

A Distributed Sensor Relocatlon Scheme for Environmental Con...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Michele Garetto Marco Gribaudo Carla-Fabiana Chiasserini Emilio Leonardi Dipartimento di Informatica Università di Torino Italy Dipartimento di Elettronica Politecnico di Torino Italy

We consider the problem of self-deployment and relocation in mobile wireless networks, where nodes are both sensors and actuators. We propose a unified, distributed algorithm that has the following features. During deployment, our algorithm yields a regular tessellation of the geographical area with a given node density, called monitoring configuration. Upon the occurrence of a physical phenomenon, network nodes relocate themselves so as to properly sample and control the event, while maintaining the network connectivity. Then, as soon as the event ends, all nodes return to the monitoring configuration. To achieve these goals, we use a virtual force-based strategy, which proves to be very effective even when compared to an optimal centralized solution.

关键词： Fires Wireless sensor networks Monitoring Mobile computing Underwater tracking Actuators distributed algorithms Robot sensing systems Computer networks Global Positioning System

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A Regeneration-Based Approach for Resource Allocation in Cooperative distributed systems

A Regeneration-Based Approach for Resource Allocation in Coo...

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international conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Sagar Dhakal Jorge E. Pezoa Majeed M. Hayat Simulation and design group Nortel Networks Limited Richardson TX USA Electrical and Computer Engineering and Center for High Technology Materials University of New Mexico Albuquerque NM USA

A regeneration-based approach is undertaken to derive an expression for the expected value of total service time for an arbitrary customer distribution when scheduling is performed in a distributed queuing system. The service times and the transfer delays for customers in the shared communication medium are both considered random. The theory is applied to a distributed wireless-sensor network and the interplay between the total service time and the energy consumption of each sensor is investigated.

关键词： Resource management Network servers Optimal scheduling Queueing analysis Delay Multidimensional systems distributed computing Processor scheduling Performance analysis sensor systems

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Empirical Study of Topology Effects on Diagnosis in Computer Networks

Empirical Study of Topology Effects on Diagnosis in Computer...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Natalia Odintsova Irina Rish T.J. Watson Research Center IBM USA

In this paper, we compare the efficiency of fault detection and diagnosis in networks having different topological properties, such as scale-free networks and Erdos-Renyi random graphs. Efficiency measures include both the number of tests (e.g., end-to-end network probes) necessary for diagnosis and the computational complexity of diagnosis. We observe that diagnosis in scale-free networks typically requires significantly larger number of tests than diagnosis in random networks. However, the computational complexity of diagnosis appears to be much lower for scale-free networks since the corresponding Bayesian network models used for probabilistic diagnosis tend to have much lower induced width - a topological parameter controlling the complexity of inference in Bayesian networks. We believe that our observations provide important insights for design and deployment of cost-efficient diagnostic methods in computer networks and distributed systems.

关键词： Network topology Computer networks Peer to peer computing Testing Computational complexity IP networks Grid computing Government Bayesian methods distributed computing

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Position Uncertainties in Range-free Wireless sensor Network Localization

Position Uncertainties in Range-free Wireless Sensor Network...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Zhen Feng Wei Liu Kanru Xu Wenqing Cheng Department of Electronics and Information Engineering Huazhong University of Science and Technology China

Evaluating position uncertainties is a fundamental problem of wireless sensor network localization. A constraint set, including both positive and negative constraints, is constructed to bound sensor position. By projecting the feasible region of this constraint set onto a 2D plane, the feasible scope of sensor position is computed to evaluate node position uncertainty. The projection result, called feasible geographic region (FGR), is approximated by its inner and outer polygon. The polygon approximation will converge to the actual FGR if we incrementally add more polygon vertices. A distributed algorithm is proposed to compute FGR. Finally, we study the impact of node position uncertainty upon a typical network application, target event detection. The feasible scope of target event position is computed even though the sensor position is not certain.

关键词： Uncertainty Wireless sensor networks Event detection Global Positioning System distributed computing Computer networks sensor phenomena and characterization Iterative algorithms distributed algorithms Bridges

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Exploiting Spatial Correlation in a three dimensional Wireless sensor Network

Exploiting Spatial Correlation in a three dimensional Wirele...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Anurag Sharma Torsha Banerjee Dharma P. Agrawal OBR Center for Distributed and Mobile Computing Department of Computer Science University of Cincinnati Cincinnati OH USA

Physical attributes such as temperature exhibit gradual change in value with space. Observations from the sensor nodes are thus highly correlated. In this paper, we propose a scheme to exploit the spatial correlation of data in a three dimensional wireless sensor network (WSN), in a way so as to reduce the number of transmissions in the network, thereby saving energy. The presented work is an extension of the earlier proposed TREG scheme which is only applicable to two dimensional WSN. Our scheme involves formation of binary tree and transmission of data along the tree nodes. Simulation has been carried out for different tree heights. Simulation results show that a tree height of four provides results with optimal values.

关键词： Wireless sensor networks sensor phenomena and characterization Intelligent sensors Temperature sensors Batteries Costs Protocols Energy consumption Mobile computing Computer networks

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