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CBPMAC/TFC: A Wireless sensor Network MAC Protocol for systems with Burst and Periodic Signals

CBPMAC/TFC: A Wireless Sensor Network MAC Protocol for Syste...

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3rd international conference on Wireless Communications, Networking and Mobile computing (WiCOM 2007)

作者： Liu, Lanjun Zhang, Xiaotong Wang, Qin Li, Lei Wang, Ruofei Univ Sci & Technol Beijing Sch Informat Engn Beijing 100083 Peoples R China Wuhan Univ Sch Comp Wuhan Peoples R China

ISBN: (纸本)9781424413119

Aiming at the application scene with both burst signals and periodic signals, this paper proposes a cluster-based wireless sensor network MAC protocol combining TDMA, FDMA with CSMA/CA-CBPMAC/TFC(A Cluster-based Wireless sensor Network MAC Protocol for the System with Burst and Periodic Signals/Based on TDMA, FDMA, CSMA/CA). It adopts TDMA mechanism in the clusters, and assigns time-slots for periodic signals and burst signals respectively. In the periodic signal time-slot, only one child node sends its periodic signal, while in the burst signal time-slots, all the child nodes share the channel according to CSMA/CA mechanism. Among different clusters, FDMA mechanism is adopted. Different cluster works at different frequency channel, so they can work simultaneously. For the requirement of synchronization, a cluster-head-based relative time synchronization mechanism is proposed. In addition, the alternation strategy of cluster heads and the disposal strategy of malfunctions are introduced. Analysis and test results show that the protocol could meet the system requirements in reliability, real-time response and energy efficiency.

关键词： WSN MAC TDMA FDMA CSMA/CA time synchronization

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Proceedings - 3rd ieee/ACM international conference on Big Data computing, Applications and Technologies, BDCAT 2016

Proceedings - 3rd IEEE/ACM International Conference on Big D...

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3rd ieee/ACM international conference on Big Data computing, Applications and Technologies, BDCAT 2016

ISBN: (纸本)9781450346177

The proceedings contain 39 papers. The topics discussed include: H2F: a hierarchical Hadoop framework for big data processing in geo-distributed environments;performance characterization of Hadoop workloads on SR-IOV-enabled virtualized InfiniBand clusters;a visual analytics approach to author name disambiguation;applying big data warehousing and visualization techniques on PingER data;efficient service discovery in decentralized online social networks;towards longitudinal analysis of a population's electronic health records using factor graphs;disease gene discovery of single-gene disorders based on complex network;identifying patient experience from online resources via sentiment analysis and topic modelling;a study of factuality, objectivity and relevance: three desiderata in large-scale information retrieval;on exploiting data locality for iterative MapReduce applications in hybrid clouds;spatial and temporal analysis of urban space utilization with renewable wireless sensor network;spatial big data for designing large scale infrastructure: a case-study of electrical road systems;a real-time big data analysis framework on a CPU/GPU heterogeneous cluster: a meteorological application case study;a benchmarking platform for analyzing corpora of traces: the recognition of the users' involvement in fields of competencies;and not too late to identify potential churners: early churn prediction in telecommunication industry.

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High Capacity Multiresonant Chipless RFID sensor Tag For IoT Applications 3

High Capacity Multiresonant Chipless RFID Sensor Tag For IoT...

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3rd international conference on Communication, computing and Digital systems, C-CODE 2023

作者： Jabeen, Iqra Amin, Yasar Tenhunen, Hannu University of Engg and Technology Dept.of Telecommunication Engg Taxila Pakistan University of Turku Dept.of Information Technology Turku Finland

ISBN: (纸本)9798350332391

A novel, high-density, miniature and compact chip- less RFID sensor tag is presented in this article. The proposed work comprises fourteen nested quatrefoil-shaped slot resonators for ID coding with the additional feature of printability and sensitivity. The geometrical configuration consists of several quatrefoil slots of various sizes distributed in a concentric *** unique feature of the presented tag is exhibiting a humidity sensing feature with the deployment of silver nano-ink particle as a radiator by keeping the high code density of 21.8 bits/cm2 in comparison with existing reported works. A bit coding sequence is observed in the frequency spectra from 5 GHz-24 GHz while maintaining a compact size of 8 mm× 8 mm. Further, the performance of the proposed tag is evaluated for numerous substrates, including Rogers RT/Duroid/5880, Taconic (TLX-8), F4BM and Kapton HN, allowing it to be employed in a variety of environments. Additionally, the realized tag structure possesses angular stability at various polarization angles up to 900. This particular tag is deemed to be a suitable choice for future product identification and Internet of Things (IoT) systems. © 2023 ieee.

关键词： Internet of things

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Peer-to-peer spatial queries in sensor networks 3

Peer-to-peer spatial queries in sensor networks

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3rd international conference on Peer-to-Peer computing (P2P 2003)

作者： Demirbas, M Ferhatosmanoglu, H Ohio State Univ Dept Comp & Informat Sci Columbus OH 43210 USA

ISBN: (纸本)0769520235

sensor networks, that consist of potentially several thousands of nodes each with sensing (heat, sound, light, magnetism, etc.) and wireless communication capabilities, provide great opportunities for monitoring spatial information about a region of interest. Although spatial query execution has been studied extensively in the context of database systems (e.g., indexing technologies), these solutions are not directly applicable in the context of sensor networks due to the decentralized nature of the sensor networks and the limited computational power and energy scarcity of individual sensor nodes. In this paper, we present a peer-to-peer indexing structure, namely peer-tree, in order to address the problem of energy- and time-efficient execution of spatial queries (such as nearest-neighbor queries) in sensor networks. Loosely speaking, our peer-tree structure can be interpreted as a peer-to-peer version of the centralized R-tree index structure. Using the peer-tree as a building block, we present a peer-to-peer query processing model where a query can be posed in any node of the network without the need of a central server. For achieving minimal energy consumption and minimal response time, our query processing model ensures that only the relevant nodes for the correct execution of a query are involved in the query execution.

关键词： sensor networks peer-to-peer spatial queries distributed index structures

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SAFE model approach to construction of intelligent security systems

SAFE model approach to construction of intelligent security ...

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3rd international conference on Information Technology and Applications, ICITA 2005

作者： Chaczko, Zenon Sinha, Sourendra Nath Software Faculty of Engineering PO Box 123 Broadway NSW 2007 Australia

ISBN: (纸本)0769523161

Dynamic environments such as that of any public and private infrastructure, workplace and even home consist of multiple entities that continuously interact with each other. Integrating an intelligent security system in such an environment necessitates the need for a soft systems approach that gives perspective to such interactions through identifying associated holons. The holonic analysis allows characterisation of ill-defined and often problematic situations that are resultant of the human activity system. This paper discusses some techniques that can be adopted to resolve scenarios that are plagued with uncertainty in reasoning and the continuously varying nature of interrelationship between native entities. The technical aspect of this system encompasses the mode of query processing and surveillance through a structured sensor network set up with the aid of distributed services and network protocols. © 2005 ieee.

关键词： Computer system firewalls

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A novel approach for electrical load forecasting using distributed sensor networks 3

A novel approach for electrical load forecasting using distr...

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3rd international conference on Intelligent Sensing and Information Processing, ICISIP 2005

作者： Challa, B.P. Challa, S. Chakravorty, R. Deshpande, S.K. Sharma, D. Business School University of Queensland Faculty of Business Economics and Law QLD4072 Australia Networked Sensor Technologies Lab University of Technology Sydney Faculty of Engineering PO Box 123 BroadwayNSW2007 Australia Management Policy and Practice Engineering University of Technology Sydney Faculty of Engineering PO Box 123 BroadwayNSW2007 Australia

ISBN: (纸本)0780395883

Electrical market often demands accurate forecasting of electrical load for planning and operation of the power infrastructure. Current models can forecast load from half hour up to 24 hours and are based on aggregate temperature for the entire day. Although these models work very well, they do not consider the intermediate real time information between time intervals to forecast load which introduce many uncertainties pertaining to factors such as climatic conditions, geographic locations etc. Furthermore, such intermediate real time information is costly and difficult to obtain. With the aid of distributed sensor networks, real time information can easily be obtained which can lead to precise planning and operation of power systems. Such information can easily improve electrical load forecasting and reduce uncertainty which can have a direct impact on the customer. We propose new and improved models for electricity load forecasting by incorporating real-time weather (temperature) information arising from the lowcost distributed sensor networks. © 2005 ieee.

关键词： Aggregates

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High Performance computing and Communications: Third international conference, HPCC 2007 Proceedings

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3rd international conference on High Performance computing and Communications, HPCC 2007

ISBN: (纸本)9783540754435

The proceedings contain 75 papers. The topics discussed include: programming challenges for petascale and multicore parallel systems;bandwidth-aware design of large-scale clusters for scientific computations;the changing impact of semiconductor technology on processor architecture;a windows-based parallel file system;coarse-grain time slicing with resource-share control in parallel-job scheduling;performance evaluation of distributed computing over heterogeneous networks;hybrid line search for multiobjective optimization;continuous adaptive outlier detection on distributed data streams;a data imputation model in sensor databases;an adaptive parallel hierarchical clustering algorithm;resource aggregation and workflow with webcom;performance evaluation of view-oriented parallel programming on cluster of computers;a low-power globally synchronous locally asynchronous FFT processor;and file and memory security analysis for grid systems.

关键词： Parallel processing systems

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A fully polynomial approximation algorithm for collaborative relaying in sensor networks under finite rate constraints

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3rd ieee international conference on distributed computing in sensor systems

作者： Kannan, Rajgopal Wei, Shuangqing Chakravarthy, Vasu Rangaswamy, Murali Louisiana State Univ Dept CS Baton Rouge LA 70803 USA Louisiana State Univ Dep ECE Baton Rouge LA 70803 USA US Air Force Wright Patterson AFB OH 45433 USA US Air Force Bedford MA 01731 USA

ISBN: (纸本)9783540730897

We take an algorithmic approach to a well-known communication channel problem and develop several algorithms for solving it. Specifically, we develop power control algorithms for sensor networks with collaborative relaying under bandwidth constraints, via quantization of finite rate (bandwidth limited) feedback channels. We first consider the power allocation problem under collaborative relaying where the tradeoff between minimizing ones own energy expenditure and the energy for relaying is considered under the constraints of packet outage probability and bandwidth constrained (finite rate) feedback. Then we develop bandwidth constrained quantization algorithms (due to the finite rate feedback) that seek the optimal way of quantizing channel quality and power values in order to minimize the total average transmission power and satisfy the given probability of outage. We develop two kinds of quantization protocols and associated quantization algorithms. For separate source-relay quantization, we reduce the problem to the well-known k-median problem [11 on line graphs and show a a simple O((K-j)N-2) polynomial time algorithm, where log(2) K-j is the quantization bandwidth and N is the size of the discretized parameter space. For joint quantization, we first develop a simple 2-factor approximation of complexity O(K-j N + N log N). Then, for epsilon > 0, we develop a fully polynomial approximation scheme (FPAS) that approximates the optimal quantization cost to within an 1 + epsilon-factor. The running time of the FPAS is polynomial in 1/epsilon, size of the input N and also In F, where F is the maximum available transmit power.

关键词： Polynomial approximation

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Multi-sensor Scheduling Method for Cooperative Target Tracking Based on ADP 3

Multi-sensor Scheduling Method for Cooperative Target Tracki...

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3rd international conference on Wireless Communications and Smart Grid, ICWCSG 2021

作者： Zhang, Shanshan Xin, Haihui Dalian Maritime University Dalian China Dalian University of Science and Technology Dalian China

ISBN: (纸本)9781665425988

In order to solve the limitations of limited sensing, communication, computing resources and energy supply in wireless sensor networks, a lot of basic research and development work have been carried out to study the optimal containment control problem of multi-agent systems with unknown disturbances. In this paper, through problem conversion, the robust containment control problem of the multi-agent system under unknown disturbances is first transformed into the optimal containment control problem of an auxiliary system, and a control method based on adaptive dynamic programming is proposed to solve the optimal containment control problem of multi-agent systems. Meanwhile, a VI algorithm for solving the optimal solution of the coupled DTHJB equation is proposed too. Then an actorcritic network is used to calculate the iterative solution by way of online learning with only data input and output. Finally, the simulation results verify the effectiveness of the proposed distributed control design. © 2021 ieee.

关键词： Multi agent systems

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REDRP: Reactive energy decisive routing protocol for wireless sensor networks

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3rd international conference on Ubiquitous Intelligence and computing

作者： Wang, Ying-Hong Lin, Yi-Chien Fu, Ping-Fang Tsai, Chih-Hsiao TamKang Univ Dept Comp Sci & Informat Engn Taipei Taiwan

ISBN: (纸本)3540380914

The wireless sensor network (WSNs) was extensively deployed and researched for many applications in recently. By taking the advantage of smaller dimension, lower cost and simple structure of the sensor node, the more restrictions come together with sensors. Therefore, the limited power of sensor nodes is the most direct and difficult problem we meet. The limitation on the energy of sensor node makes the bottlenecks for designing the suitable routing protocols. In order to solve the problem of limited energy, the loading of nodes have to be distributed as possible as it can. If the energy consumption can be shared averagely by most nodes, then the lifetime of sensor networks will be enlarged. Thus we propose the routing protocol called Reactive Energy Decision Routing Protocol (REDRP) for sensor networking by considering several representative routing protocols in different structures. This protocol will create the routes in reactive routing method to transmit the data node gathered and the REDRP use the residual energy of nodes as the routing decision for energy-aware. As the results of simulation shows that the more fairness usage of sensor nodes, the total energy consumption of entire network will be distributed fairly by our protocol and the lifetime will also be increased.

关键词： Wireless telecommunication systems

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