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检索条件"任意字段=14th International Conference on COMmunication Systems and NETworkS, COMSNETS 2022"

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A Platform for Privacy-Preserving Geo-social Recommendation of Points of Interest

A Platform for Privacy-Preserving Geo-social Recommendation ...

引用

international conference on Mobile Data Management

作者： Daniele Riboni Claudio Bettini Department of Computer Science EveryWare Laboratory Universita degli Studi di Milano Milano Italy

ISBN: (纸本)9781467360685

Different recommender systems suggest points of interest (POIs) based on data shared through geo-social networks (GSN). these systems are a very useful resource for mobile users, and an important business opportunity for advertisers. However, GSN data (e.g., the check-in of a person in a particular place) may be private information that a user may not want to release outside her social network. Even if the GSN service is trusted, and users' data is not directly released, an adversary may be able to reconstruct the data of a GSN user by mining the received recommendations. In this demo we will illustrate an implementation of the POI-Ti-Dico platform for privacy-conscious geo-social recommendation of POIs. the platform includes a server-side private recommender system and a mobile application for the Android framework. Recommendations are computed using a very large dataset of real check-ins.

关键词： Privacy Mobile communication Recommender systems Androids Humanoid robots Servers Data privacy

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A new energy efficient cluster-head and backup selection scheme in WSN

A new energy efficient cluster-head and backup selection sch...

引用

IEEE international conference on Information Reuse and Integration (IRI)

作者： Davood Izadi Jemal Abawajy Sara Ghanavati Parallel and Distributed Computing Lab School of Information Technology Deakin University Geelong Australia

Despite significant advancements in wireless sensor networks (WSNs), energy conservation remains one of the most important research challenges. Proper organization of nodes (clustering) is one of the major techniques to expand the lifespan of the whole network through aggregating data at the cluster head. the cluster head is the backbone of the entire cluster. that means if a cluster head fails to accomplish its function, the received and collected data by cluster head can be lost. Moreover, the energy consumption following direct communications from sources to base stations will be increased. In this paper, we propose a type-2 fuzzy based self-configurable cluster head selection (SCCH) approach to not only consider the selection criterion of the cluster head but also present the cluster backup approach. thus, in case of cluster failure, the system still works in an efficient way. the novelty of this protocol is the ability of handling communication uncertainty, which is an inherent operational aspect of sensor networks. the experiment results indicate SCCH performs better than other recently developed methods.

关键词： Wireless sensor networks Protocols Fuzzy logic Base stations Fuzzy systems Uncertainty Nominations and elections

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Cost and delay tradeoff in three-stage switch architecture for data center networks

Cost and delay tradeoff in three-stage switch architecture f...

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IEEE Workshop on High Performance Switching and Routing

作者： Shu Fu Bin Wu Xiaohong Jiang Achille Pattavina Lei Zhang Shizhong Xu School of Computer Science and Technology Tianjin University Tianjin China School of Systems Information Science Future University Hakodate Hakodate Japan Dipartimento di Elettronica e Informazione Politecnico di Milano Italy School of Communication and Information Engineering UESTC Chengdu China

Data center networks (DCNs) generally adopt Clos network with crossbar middle switches to achieve non-blocking data switching among the servers, and the number of middle switches is proportional to the number of ports of the aggregation switches in a fixed manner. Besides, reconfiguration overhead of the switches is generally ignored, which may contradict the engineering practice. In this paper, we consider batch scheduling based packet switching in DCNs with reconfiguration overhead at each middle switch, which inevitably leads to packet delay. With existing state-of-the-art traffic matrix decomposition algorithms, we can generate a set of permutations, each of which stands for the configuration of a middle switch. By reconfiguring each middle switch to fulfill multiple configurations in parallel with others, we reveal that a tradeoff exists between packet delay and switch cost (denoted by the number of middle switches), while performance guaranteed switching with bounded packet delay can be achieved without any packet loss. Based on the tradeoff, we can minimize the number of middle switches (under a given packet delay bound) and an overall cost metric (by translating delay into a comparable cost factor), as well as formulating criterions for choosing a matrix decomposition algorithm. this provides a flexible way to reduce the number of middle switches by slightly enlarging the packet delay bound.

关键词： Optical switches Delays Matrix decomposition Ports (Computers) Minimization Servers

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Availability Improvement of Ship's Optical communication Network

Availability Improvement of Ship's Optical Communication Net...

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14th international conference on Transparent Optical networks (ICTON)

作者： Jurdana, Irena Mikac, Branko Tomas, Vinko Univ Rijeka Fac Maritime Studies Studentska 2 Rijeka 51000 Croatia Univ Zagreb Fac Elect Engn & Comp Zagreb 10000 Croatia

ISBN: (纸本)9781467322270

the paper presents the heuristic approach to availability analysis of optical communication networks connecting ship's systems. the availabilities of individual components have been calculated, as the basis for the entire system availability evaluation. Several network availability structures and protection scenarios are presented and the availability evaluated. Based on the analysis, the possibility for improving ship's communication system availability has been proposed, contributing to the overall availability improvement of ship's systems.

关键词： optical communication network availability model ship's systems

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Mobile Radio Network Development Problems

Mobile Radio Network Development Problems

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14th international conference on Transparent Optical networks (ICTON)

作者： Bogdanov, Alexey Shevtsov, Vyacheslav Natl Res Univ Moscow Aviat Inst Moscow 125993 Russia

ISBN: (纸本)9781467322270

the report analyses the current development tendencies of integrated telecommunications systems, factors to limit this development, and provides some new approaches to upgrade the cellular network. Advantages of the integrated system of cellular communication and system of differential satellite navigation - GPS (GLONASS), which is maintained in Moscow, are discussed.

关键词： LTE OFDM IMT-Advanced retransmission unit GSM GLONASS GPS cellular network telecommunications systems

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Cooperative MAC Protocol for Multi-Channel Wireless networks

Cooperative MAC Protocol for Multi-Channel Wireless Networks

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14th IEEE international conference on High Performance Computing and communications (HPCC) / IEEE 9th international conference on Embedded Software and systems (ICESS)

作者： Hung, Li-Ling Chang, Chih-Yung Wang, Tzu-Lin Hsiao, Chin-Yao Aletheia Univ Taipei Taiwan Tamkang Univ New Taipei 25137 Taiwan

ISBN: (纸本)9780769547497

the existing channel variation (or fading) is one of the big challenges that affects the capacity of wireless networks. Recently, cooperative communication has been considered as an effective way to improve the communication reliability. In this paper, a novel medium access control (MAC) protocol, called CMMI, has been proposed for exploiting the opportunities of cooperative transmissions to improve link reliability in wireless networks. Based on the new proposed multi-channel model, the proposed CMMI fully utilizes the wireless spectrum for finding the cooperative nodes and then collaboratively recover the failure transmissions. Simulation results show that the proposed CMMI can obviously improve the network performance in terms of network throughput, average packet delay and packet delivery ratio.

关键词： Multichannel medium access protocol cooperative communication communication reliability

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networks in Automotive systems: the Potential for Optical Wireless Integration

Networks in Automotive Systems: The Potential for Optical Wi...

引用

14th international conference on Transparent Optical networks (ICTON)

作者： Green, Roger J. Rihawi, Zeina Mutalip, Zaiton Abdul Leeson, Mark S. Higgins, Matthew D. Univ Warwick Sch Engn Coventry CV4 7AL W Midlands England

ISBN: (纸本)9781467322270

Vehicular communications have become an attraction field to researchers in different sectors;from electronic systems, then communication technologies, automotive control systems, to network topology developers. Control, audio and video signals are circulated within a vehicle using wired and wireless networks. Optical Wireless (OW) technology has started to be used in infra-satellite links and aircraft, since it offers high bandwidth and resistance to electromagnetic interference (EM). As more electronic systems are being within a vehicle, EM exists, especially in the engine compartment. thus it is an attractive proposition to use OW in cars. In this paper, a review of control and multimedia systems in vehicles is presented. An overview of implementing OW in vehicles for future automotive communication technologies will also be discussed.

关键词： Optical Wireless Infra-vehicle control system multimedia system

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Efficient Handling of Arrays in Dataflow Process networks

Efficient Handling of Arrays in Dataflow Process Networks

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14th IEEE international conference on High Performance Computing and communications (HPCC) / IEEE 9th international conference on Embedded Software and systems (ICESS)

作者： Baudisch, Daniel Brandt, Jens Schneider, Klaus Univ Kaiserslautern Dept Comp Sci Embedded Syst Grp D-67663 Kaiserslautern Germany

ISBN: (纸本)9780769547497

Dataflow process networks (DPN) have been proposed as a programming model for distributed parallel systems that have communication paths with unpredictable latencies. the purely data-driven execution of DPNs does not require a global coordination and therefore allows one to easily map DPNs to many parallel hardware and software architectures with distributed memories. Problems due to shared memory communication like data races do not exist since the communication is done via point-to-point FIFO buffers between the process nodes. On the other hand, this distributed programming model leads to high communication costs if large data structures like arrays have to be communicated between nodes. this paper addresses the reduction of the communication costs due to arrays that are processed by - and therefore sent between - DPN nodes. the presented methods are given at a high level of abstraction and do not impose specific constraints on the used target architectures. Our experimental results show clearly the advantage of our approach compared to the standard message passing between the nodes.

关键词： arrays communication Dataflow Process networks DPN efficient handling

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DPPM FSO communication systems Impaired by Turbulence, Pointing Error and ASE Noise

DPPM FSO Communication Systems Impaired by Turbulence, Point...

引用

14th international conference on Transparent Optical networks (ICTON)

作者： Aladeloba, Abisayo O. Phillips, Andrew J. Woolfson, Malcolm S. Univ Nottingham Div Elect Syst & Opt Nottingham NG7 2RD England

ISBN: (纸本)9781467322270

Performance analyses, using a modified Chernoff bound on the bit error rate, are given for an optically preamplified digital pulse position modulation (DPPM) free-space optical (FSO) communication system impaired by pointing error and atmospheric turbulence combined, in addition to the amplified spontaneous emission noise arising from the optical amplification. An improvement of about 7 9 dB (depending on the turbulence level) can be potentially achieved using the DPPM scheme over an equivalent on off keyed non-return-to-zero based F SO system.

关键词： atmospheric turbulence amplified spontaneous emission digital pulse position modulation free-space optical communications modified Chernoff bound pointing error

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Advanced Schemes for Optical Datacommunications

Advanced Schemes for Optical Datacommunications

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14th international conference on Transparent Optical networks (ICTON)

作者： Ingham, J. D. Penty, R. V. White, I. H. Univ Cambridge Dept Engn Elect Engn Div Cambridge CB3 0FA England

ISBN: (纸本)9781467322270

the demand for high-speed optical links within local-area networks and storage-area networks continues to grow rapidly, with standards under development that demand single-wavelength solutions at data rates of 30 Gb/s and beyond. Robust low-cost schemes are required, with a particular emphasis on multimode-fibre links using optical transceivers based on vertical-cavity surface-emitting lasers.

关键词： fibre optic communication systems modulation formats

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