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检索条件"任意字段=6th IEEE International Conference on Distributed Computing in Sensor Systems"

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A Static Multi-hop Underwater Wireless sensor Network Using RF Electromagnetic Communications

A Static Multi-hop Underwater Wireless Sensor Network Using...

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international conference on distributed computing systems Workshop

作者： Xianhui Che Ian Wells Paul Kear Gordon Dickers Xiaochun Gong Mark Rhodes Swansea Metropolitan University UK Wireless Fibre System Limited UK

Most underwater sensor networks choose acoustics as the medium for wireless transmission. However, electromagnetic waves also offer great merits for transmission in special underwater environment. A small scale wireless sensor network is deployed using electromagnetic waves with a multi-hop static topology under shallow water conditions where there is a high level of sediment and aeration in the water column. Data delivery is scheduled via daily cycles of sleeping and waking up to transmit. Due to the unique features of the network, ad-hoc on-demand distance vector (AODV) is chosen as the routing protocol. Modeling and simulations are conducted to evaluate network performance in terms of failure tolerance, congestion handling, and optimal grid arrangements. the results demonstrate the likely effectiveness of the designated network for this and similar scenarios.

关键词： Spread spectrum communication Wireless sensor networks Underwater communication Electromagnetic scattering Underwater acoustics Radio frequency Optical sensors Acoustic waves Acoustic applications Optical fiber networks

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On introducing location awareness in publish-subscribe middleware

On introducing location awareness in publish-subscribe middl...

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international conference on distributed computing systems Workshop

作者： G. Cugola J.E.M. de Cote Dipartimento di Elettronica e Informazione Politecnico di Milano Milan Italy

Having the possibility of routing messages only toward specific areas or subscribing to messages originating in specific locations seems natural when a publish-subscribe model of communication is adopted. Unfortunately, very few work have investigated such kind of services and none of the most widely adopted publish-subscribe middleware implements them. In this paper we first classify possible location-based publish-subscribe services, then we describe an algorithm to efficiently implement them in a distributed publish-subscribe middleware.

关键词： Mobile radio mobility management Publish-subscribe Middleware Subscriptions Dispatching Intelligent sensors sensor phenomena and characterization Routing protocols Publishing Cities and towns

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Quantum communication in distributed wireless sensor networks

Quantum communication in distributed wireless sensor network...

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

作者： Jung-Shian Li Ching-Fang Yang Institute of Computer and Communication Engineering National Cheng Kung University Tainan County Taiwan

In the wireless sensor networks (WSNs), sensor nodes may be deployed in the hostile areas. the eavesdropper can intercept the messages in the public channel and the communication between the nodes is easily monitored. Furthermore, any malicious intermediate node can act as a legal receiver to alter the passing messages. Hence, message protection and sensor node identification become important issues in WSN. In this paper, we propose a novel scheme providing unconditional secure communication based on the quantum characteristics, including no-cloning and teleportation. We present a random EPR-pair allocation scheme that is designed to overcome the vulnerability caused by possible compromised nodes. EPR pairs are pre-assigned to sensor nodes randomly and the entangled qubits are used by the nodes with the quantum teleportation scheme to form a secure link. We also show a scheme on how to resist the man-in-the-middle attack. In the framework, the qubits are allocated to each node before deployment and the adversary is unable to create the duplicated nodes. Even if the malicious nodes are added to the network to falsify the messages transmitting in the public channel, the legal nodes can easily detect the fake nodes that have no entangled qubits and verify the counterfeit messages. In addition, we prove that one node sharing EPR pairs with a certain amount of neighbor nodes can teleport information to any node in the sensor network if there are sufficient EPR pairs in the qubits pool. the proposal shows that the distributed quantum wireless sensor network gains better security than classical wireless sensor network and centralized quantum wireless network.

关键词： Wireless sensor networks Paramagnetic resonance Law Legal factors sensor phenomena and characterization Teleportation Monitoring Protection Quantum entanglement Resists

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6th international conference on Social Informatics, SocInfo 2014

6th International Conference on Social Informatics, SocInfo ...

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6th international conference on Social Informatics, SocInfo 2014

ISBN: (纸本)9783319151670

the proceedings contain 65 papers. the special focus in this conference is on Criminal Network Analysis, Interaction and Exchange in Social Media, Exploration on Games, Computational History and Agent-Based Models. the topics include: Visual analysis of urban flows in geolocated social media data;a literature-based approach to a narco-network;the spatial structure of crime in urban environments;emergence of extreme opinions in social networks;triad-based role discovery for large social systems;a tool-based methodology to analyze social network interactions in cultural fields;detecting presence of personal events in twitter streams;digital addiction ontology for social networking systems;initial exploration of the use of specific tangible widgets for tablet games;developing game-structure sensitive matchmaking system for massive-multiplayer online games;informal in-game help practices in massive multiplayer online games;social network analysis of high-level players in multiplayer online battle arena game;linking historical ship records to a newspaper archive;mapping memory landscapes in nodegoat;developing onomastic gazetteers and prosopographies for the ancient world through named entity recognition and graph visualization;reconstructing topological properties of complex networks using the fitness model;collective intelligence-based sequential pattern mining approach for marketing data;threshold of herd effect for online events in china;identifying bridges for information spread control in social networks;comparing human and algorithm performance on estimating word-based semantic similarity and a crowdsourced serious game for simulating human perception.

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Parameter Optimization for the Detector Based on Fractional Lower Order Moments in Alpha-Stable distributed Noise 6th

Parameter Optimization for the Detector Based on Fractional ...

引用

6th international conference on Communications, Signal Processing, and systems (ICCSPS)

作者： Luo, Jinjun Wang, Shilian Zhang, Eryang Natl Univ Def Technol Sch Elect Sci & Engn Changsha 410073 Hunan Peoples R China

ISBN: (纸本)9789811065712;9789811065705

In impulsive noise modeled by the symmetric alpha stable (SaS) distribution, the detector based on fractional lower order moments (FLOM) is a good choice for signal detection due to its simplicity and satisfied performance. the moment order is a priori parameter of the FLOM detector. However, there is no quantitative result to help us to choose a good moment order in the literature. In order to calculate the optimal value of the moment order for the FLOM detector, we first derive a novel asymptotic expression for the detection probability and then calculate the optimal value of the moment order by the Genetic algorithm. the effect of different parameters on the optimal moment order is discussed and some useful conclusions are drawn. Simulation results prove that the optimized moment order makes the FLOM detector achieve the best performance in different SaS noise.

关键词： Alpha stable distribution Impulsive noise Signal detection Fractional lower order moment Parameter optimization

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Network Lifetime Maximization in Delay-Tolerant sensor Networks with a Mobile Sink

Network Lifetime Maximization in Delay-Tolerant Sensor Netwo...

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international conference on distributed computing in sensor systems (DCOSS)

作者： Zichuan Xu Weifa Liang Yinlong Xu Research School of Computer Science Australian National University Canberra ACT Australia School of Computer Science and Technology University of Science and Technology Hefei Anhui China

In this paper we investigate the network lifetime maximization problem in a delay-tolerant wireless sensor network with a mobile sink by exploiting a nontrivial tradeoff between the network lifetime and the data delivery delay. We formulate the problem as a joint optimization problem that consists of finding a trajectory for the mobile sink and designing an energy-efficient routing protocol to route sensing data to the sink, subject to the bounded delay on data delivery and the given potential sink location space. Due to NP-hardness of the problem, we then propose a novel optimization framework, which not only prolongs the network lifetime but also improves the other performance metrics including the network scalability, robustness, and the average delivery delay. We finally conduct extensive experiments by simulations to evaluate the performance of the proposed algorithm against other heuristics. the experimental results demonstrate that the proposed algorithm outperforms the others significantly in terms of network lifetime prolongation.

关键词： Mobile communication Trajectory Delay Vegetation Energy consumption Mobile computing Routing

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Stabilization of Hybrid Wheeled and Legged Mobile Robot Based on ZMP

Stabilization of Hybrid Wheeled and Legged Mobile Robot Base...

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international conference on Soft computing and Intelligent systems

作者： Dong-Hyuk Jeong Bo-Hoon Lee Jong-Hwan Park Yong-Tae Kim Dept. of Electrical Electronic Control Engineering Hankyong National University Graduate School of Bio and Information Technology Hankyong National University

ISBN: (纸本)9781467327428

the hybrid mobile robot has high degree of freedom and has walking instability in dynamic walking. therefore there are many researches to develop robots that improve its mobility to adapt in various uneven environments. When the robot moves position especially, Stability has been one of the most important factors. In the paper, we propose algorithm to increase stability by using FSR sensor. Also we actually verify a performance through walking experiment.

关键词： Component Stability ZMP Hybrid Robot FSR sensor

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Algebraic reconstruction technique for neuro-fuzzy geotomography

Algebraic reconstruction technique for neuro-fuzzy geotomogr...

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ieee international conference on Fuzzy systems (FUZZ-ieee)

作者： T. Miyoshi H. Tabuchi H. Ichihashi Dept. of Ind. Eng. Osaka Prefecture Univ. Japan Department of Industrial Engineering Osaka Prefecture University Sakai Osaka Japan

A new algebraic reconstruction techniques (ART) are developed for a neuro-fuzzy geotomography to accelerate the convergence of learning phase and to reduce the learning time or iteration times. the learning algorithm is derived from a constrained optimization problem. the Minkowski norm of the corrections of parameters is used as the objective function of the optimization problem. Some computer simulation results show that smooth distributions of a material parameter are obtained by using the Minkowski norm. Furthermore, the proposed method is applied to the experimental data collected at a dam site by cross borehole seismic probing.

关键词： Image reconstruction Subspace constraints Convergence distributed computing Geology Iterative algorithms Least squares approximation Error correction Industrial engineering Data visualization

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Gas concentration pattern analysis of the H2O-CO2 vibration by high-speed ultrasound gas sensor for detecting human specific lung gas exchange

Gas concentration pattern analysis of the H2O-CO2 vibration ...

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6th international conference on Complex Medical Engineering, CME 2012

作者： Toda, Hideki Department of Electrical and Electronic Systems Eng. Faculty of Engineering University of Toyama Gofuku 3190 Toyama Japan

ISBN: (纸本)9781467316163

In this paper, we developed new real time human respiration analysis method with our proposed high time sampling gas concentration meter using ultrasound. Our proposed gas concentration sensor use 400 kHz ultrasound and realize 1 kHz gas concentration sampling speed for ppm level gas changes. this device reveals human specific about 50-200 millisecond H2O-CO2 gas concentration exchange and this result could not analyze by previously proposed gas concentration measurement methods such as InfraRed, semiconductor gas sensor, GC-MS. We found the rapid gas exchange from H2O to CO 2 contained air was seen specific in human being and we revealed the reason from the anatomical analysis and the gas ventilation test. Firstly we described the proposed new ultrasound sound speed measurement method, the signal processing and the measurement circuit diagram. Next we analyzed human respiration gas variation patterns by developing gas mask type respiration sensor with 3 healthy subjects and medical symptoms such as asthma, hyperventilation, and bronchial asthma subjects. the millisecond level high-speed analysis of human respiration process will be useful for next generation healthcare, rehabilitation and sports science. © 2012 ieee.

关键词： Speed

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Architecture, Functional Requirements, and Early Implementation of an Instrumentation Grid for the IoT

Architecture, Functional Requirements, and Early Implementat...

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ieee international conference on High Performance computing and Communications (HPCC)

作者： Andrea Azzarà Daniele Alessandrelli Stefano Bocchino Paolo Pagano Matteo Petracca Retis Laboratory-TeCIP Institute Scuola Superiore Sant' Anna Pisa Italy Consorzio Naz. InterUniversity per le Telecomunicazioni (CNIT) National Laboratory of Photonic Networks (CNIT) Pisa Italy

this paper presents an innovative architecture for the instrumentation layer of a pervasive large-scale information system. State of the art examples already include an instrumentation layer in a grid infrastructure; nontheless these systems were not designed for large-scale ad-hoc networks, rapidly deployed, continuously upgraded, and dynamically reconfigured when the system is on-line. the main contribution is that of designing an instrumentation layer coherent with existing infrastructures capable of being federated with others, and already providing robust virtualization services in what concerns user authentication and access, distributed storage, and computing power. the large-scale instrumentation layer is inspired by the Internet of things, and will consist of a large number of autonomous nodes organized in Wireless sensor Networks and accessing the Internet following the 6LoWPAN specifications. An early implementation of this architecture is proven to respond to use cases centered on data- and event-driven services; it also permits a large degree of flexibility and adaptiveness in end nodes applications.

关键词： sensors Peer to peer computing Computer architecture Internet Instruments Ad hoc networks Wireless sensor networks

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