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检索条件"任意字段=First IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2005"

共 1159 条记录，以下是281-290 订阅

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Healing wireless sensor networks from malicious epidemic diffusion

Healing wireless sensor networks from malicious epidemic dif...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Zema, Nicola Roberto Natalizio, Enrico Poss, Michael Ruggeri, Giuseppe Molinaro, Antonella Univ Mediterranea Reggio Calabria ARTS Lab DIIES Dept Calabria Italy CNRS UMR 7253 Lab Heudiasyc F-75700 Paris France

ISBN: (纸本)9781479946181

Leveraging the concept of controlled node mobility in this paper we develop an algorithm for tracking and controlling proximity malware propagation in Wireless sensor Networks (WSN). Our proposal aims at: (i) notifying the nodes of malware propagation, (ii) leading a flying robot along a path in the WSN that guarantees the minimum recovery time to (iii) heal the infected nodes. We formulate the targeted curing problem as a binary integer problem and determine the optimal solution by a central solver. We use the analytical result as a benchmark to evaluate the recovery time of the proposed solution. The achieved results show a satisfactory performance in terms of tracking the presence of an ongoing epidemic and healing the nodes.

关键词： Controlled mobility Wireless sensor Network Malware Removal

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Symmetric Coherent Link Degree, Adaptive Throughput-Transmission Power for Wireless sensor Networks

Symmetric Coherent Link Degree, Adaptive Throughput-Transmis...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Chantzis, Konstantinos Amaxilatis, Dimitrios Chatzigiannakis, Ioannis Rolim, Jose Ctr Univ Informat Geneva Switzerland Comp Technol Inst & Press CTI Patras Greece Univ Patras GR-26110 Patras Greece

ISBN: (纸本)9781479946181

Topology Control Protocols configure transmission power of nodes in order to achieve specific properties to a given topology. These properties include the creation and maintenance of neighborhoods or other topological entities (like trees or clusters), load balancing in terms of connectivity degrees and provision of link symmetry. We see topology control as a two-fold problem where topological properties can also be affected by local network throughput. We propose SCLD-A2TP, a protocol that operates in a two phase adaptive scheme. first transmission power is adaptively adjusted with low throughput settings and nodes achieve a sufficient degree of symmetric and coherent links. Secondly throughput is maximized insofar as the degree is maintained. We assess various distributed heuristics for SCLD-A2TP via testbed experiments and show that up to an extend, link quality and symmetry as well as degree conformity of links can be regulated successfully by transmission power and adaptive throughput control.

关键词： Adaptive Experimental Evaluation Link Symmetry Reliability Throughput Topology Control Transmission Power power transmission topology control Throughput Self tuning Wireless sensor networks CENTROSYMMETRIC Ganglia

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A Dual-sensor Enabled Indoor Localization System with Crowdsensing Spot Survey

A Dual-Sensor Enabled Indoor Localization System with Crowds...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Zhang, Chi Luo, Jun Wu, Jianxin Nanyang Technol Univ Singapore 639798 Singapore Nanjing Univ Nanjing 210008 Jiangsu Peoples R China

ISBN: (纸本)9781479946181

We present MaWi - a smart phone based scalable indoor localization system. Central to MaWi is a novel framework combining two self-contained but complementary localization techniques: Wi-Fi and Ambient Magnetic Field. Combining the two techniques, MaWi not only achieves a high localization accuracy, but also effectively reduces human labor in building fingerprint databases: to avoid war-driving, MaWi is designed to work with low quality fingerprint databases that can be efficiently built by only one person. Our experiments demonstrate that MaWi, with a fingerprint database as scarce as one data sample at each spot, outperforms the state-of-the-art proposals working on a richer fingerprint database.

关键词： Indoor Localization Mobile Sensing

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On Decentralized In-Network Aggregation in Real-World Scenarios with Crowd Mobility

On Decentralized In-Network Aggregation in Real-World Scenar...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Gregorczyk, Michal Pazurkiewicz, Tomasz Iwanicki, Konrad Univ Warsaw Warsaw Poland

ISBN: (纸本)9781479946181

Recently proposed applications for monitoring the behavior of real-world crowds with wireless sensor nodes rely on decentralized in-network aggregation. Although some of the aggregation algorithms for wireless sensor networks seem appealing for such applications, we are not aware of any deployments of these algorithms in real-world scenarios with crowd mobility. As a step toward filling this gap, we thus discuss our experiences with decentralized in-network aggregation from a few such deployments involving up to 177 nodes. We compare two main classes of algorithms for basic aggregates. We show that algorithms based on probabilistic, order- and duplicate-insensitive sketches outperform algorithms based on gradual variance reduction. To this end, however, they have to be adapted considerably to minimize the traffic, latency, and errors of the aggregation process, and to account for some real-world issues. In short, while the algorithms do have a potential for the envisioned crowd-monitoring applications, deploying them is not trivial.

关键词： Decentralized algorithms agglomeration Wireless sensor networks

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Adaptive Fuzzy Logic Mobility Management for WSN

Adaptive Fuzzy Logic Mobility Management for WSN

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Zinonos, Zinon Vassiliou, Vasos Chrysostomou, Chrysostomos Univ Cyprus Dept Comp Sci Nicosia Cyprus Frederick Univ Dept Comp Sci & Engn CY-1036 Nicosia Cyprus

ISBN: (纸本)9781479946181

Mobility management is a crucial problem for wireless mobile communication, especially in industrial wireless sensor networks. Our mobility approach resides on the fact we need to adaptively combine globally available information in order to produce a successful handoff. In this paper, we propose an adaptive fuzzy logic mobility system to support the handoff procedure in industrial wireless sensors. The results clearly show that the proposed adaptive fuzzy logic mobility controller performs better compared to the non-adaptive fuzzy logic controller, in terms of packet loss, power consumption, and on-time triggering.

关键词： adaptive fuzzy logic handoff industrial mobility handoff Fuzzy logic Self tuning Wireless sensor networks Industrial mobility management WSN gene mobility Wireless mobile communication

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Compressive Sensing Based Data Gathering in Clustered Wireless sensor Networks

Compressive Sensing Based Data Gathering in Clustered Wirele...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Minh Tuan Nguyen Teague, Keith A. Oklahoma State Univ Sch Elect & Comp Engn Stillwater OK 74078 USA

ISBN: (纸本)9781479946181

In this paper, we study the integration between Compressed Sensing (CS) and clustering methods in Wireless sensor Networks (WSNs) that significantly reduce power consumption for the networks. In theory, a base station (BS) needs to collect M measurements from the network with N sensors, then applies CS to obtain precisely all N sensor readings. In clustered networks, a cluster-head (CH) collects data from non-CH sensors in its cluster, adds all received and its own data and then sends the combined measurement to the BS. We further analyze the clustered network with the measurement matrix created by clustering methods, and formulate the total power consumption. Finally, we suggest the optimal number of clusters for the networks to consume the least power in practice.

关键词： Wireless sensor networks Data Collection Methods Clustering methods measurement matrix Compressed sensing Bahamas Network Power consumption optimum number sensors carbon monosulfide CONTAINMENT SPRAY Cesium

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Near-Optimal Deterministic Steiner Tree Maintenance in sensor Networks

Near-Optimal Deterministic Steiner Tree Maintenance in Senso...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Sharma, Gokarna Busch, Costas Louisiana State Univ Sch Elect Engn & Comp Sci Baton Rouge LA 70803 USA

ISBN: (纸本)9781479946181

We consider the group communication maintenance problem between a set of k mobile agents that are tracked by a static sensor network. We develop a scalable deterministic distributed algorithm for maintaining a Steiner tree of the agents so that group communication between them can be provided in the minimum cost possible. The main idea is that our algorithm maintains a virtual tree of mobile agents which can be immediately converted to an actual Steiner tree at all times. Our algorithm achieves the Steiner tree with total length at most O(log k) times the length of the minimum Steiner tree in the constant-doubling graph model. The total communication cost (messages) to maintain the Steiner tree is only O(min{log n, logD}) times the optimal communication cost, where n and D, respectively, are the number of nodes and the diameter of the network. We also develop improved algorithms for the k-center, sparse aggregation, and distributed matching problems. Experimental evaluation results show the benefits of our algorithms compared to previous algorithms. These four problems are NP-hard and, to the best of our knowledge, our algorithms are the first near-optimal deterministic algorithms for maintaining approximate solutions to these problems with low maintenance costs in a distributed setting.

关键词： sensor network Mobile agents Hierarchical structure Steiner tree k-center Aggregation Matching

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PerOMAS: Personal Office Management and Automation System

PerOMAS: Personal Office Management and Automation System

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international conference on distributed computing in sensor systems (dcoss)

作者： Artur Balanuta Ricardo Lopes Pereira Carlos Santos Silva INESC-ID Universidade de Lisboa Porto Salvo Portugal IN+ / Instituto Superior Técnico Universidade de Lisboa Lisboa Portugal

The reduction of the consumption of energy, through its efficient use, is regarded as one of the ways of reducing the impact of mankind on the environment. Buildings consume a significant amount of energy, namely for heating, cooling and illumination. Over the last decades, more energy efficient equipment, new building materials and construction techniques have enabled more energy efficient buildings. However, human behaviour has a large impact on the energy consumption of each building, with similar buildings presenting very distinct energy footprints, due to their occupants' behaviour. The problem of creating more sustainable energy consumption habits has recently received a lot of attention from the research community. systems capable of reducing energy consumption, by enforcing more correct behaviours, may reduce costs for companies and help improve the environmental outlook. This paper proposes a novel system to address the energy consumption problem and inadequate habits of people in office buildings. It's a highly flexible distributed office management system that can scale from an individual node in an office to the whole building. The goal is to reduce global building energy consumption without significantly affecting the users' comfort level. An approach is used where the building services are adjusted to its occupancy level and users' needs based on their location. Users are driven to better energy usage habits through access to information and feedback. Our proposal is presented in detail and validated in the context of an academic institution, more specifically at the Taguspark campus of Instituto Superior Técnico. The developed system is now operational and being used as a flexible, easily programmable, research platform.

关键词： Buildings Logic gates Energy consumption Protocols Hardware Lighting ieee 802.11 Standard

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FlashTrack: A Fast, In-network Tracking System for sensor Networks

FlashTrack: A Fast, In-network Tracking System for Sensor Ne...

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Jiang, Hao Zhai, Jiannan Hallstrom, Jason O. Clemson Univ Sch Comp Clemson SC 29631 USA

ISBN: (纸本)9781479946181

We revisit the classic object tracking problem with a novel and effective, yet straightforward distributed solution for resource-lean devices. The difficulty of object tracking lies in the mismatch between the limited computational capacity of typical sensor nodes and the processing requirements of typical tracking algorithms. In this paper, we introduce an in-network system for tracking mobile objects using resource-lean sensors. The system is based on a distributed, dynamically-scoped tracking algorithm which alters the event detection region and reporting rate based on object speed. A leader node records the detected samples across the event region and estimates the object's location in situ. We study the performance of our tracking implementation on an 80-node testbed. The results show that it achieves high performance, even for very fast objects, and is readily implemented on resource-lean sensors. While the area is well-studied, the unique combination of algorithmic features represents a significant addition to the literature.

关键词： distributed Algorithm Network Protocol Object Tracking Wireless sensor Networks Network protocols distributed algorithms tracking objects Wireless sensor networks TRACKING SYSTEM sensor networks tracking sensors

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sensor Localization Via Diversely Polarized Antennas

Sensor Localization Via Diversely Polarized Antennas

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9th ieee international conference on distributed computing in sensor systems (dcoss)

作者： Marques Marinho, Marco Antonio de Freitas, Edison Pignaton Carvalho Lustosa da Costa, Joao Paulo de Sousa Junior, Rafael Timoteo Univ Brasilia UnB Dept Elect Engn ENE Brasilia DF Brazil Fed Univ Santa Maria Frederico Westphalen UFSM FW Dept Informat Technol Santa Maria RS Brazil

ISBN: (纸本)9781479946181

Wireless sensor networks (WSNs) are currently employed in a vast number of different applications ranging from home automation and health care to military systems. Although their application may vary greatly, WSNs share a common set of characteristics such as a limited energy supply and simple hardware. A common issue related with the application of WSNs is sensor localization, for some types of applications it is important that the sensors know the relative or absolute position of other sensors in the network, such as surveillance of monitoring networks. If sensors are randomly placed they may resort a wide range of methods such as Global Navigation Satellite systems (GNSS) or received signal strength indicators (RSSI). In this work we present an alternative to relative sensor localization by employed a crossed dipole antenna in the reception and a known polarization in the transmission. The accuracy of the proposed methods is measured trough numerical simulations and results are presented.

关键词： Wireless sensor Networks sensor Localization

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