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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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Improving the modified global smoothing method for spatial distributed and large data-sets to use it in the real-time visualisation of simulation and measurement information 6

Improving the modified global smoothing method for spatial d...

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6th international conference on Information Visualisation

作者： Opriessnig, G Beer, G Graz Univ Technol Inst Struct Anal SiTu Res Grp A-8010 Graz Austria

ISBN: (纸本)0769516564

With the high-speed development of computer systems having performance values of calculation machines, which needed one or more rooms of place and a special air conditioning a few years ago, the usage of methods dealing with a high amount of data at one side, and the need of doing a enormous number of calculation work at the other side became used snore and snore frequently. Tunnelling is one major field, where this advance is very important. that field of science is regarded as one of the more difficult engineering tasks. this is due to the fact that tunnels are excavated in a material whose mechanical and hydraulic properties are highly variable and whose behaviour is difficult to describe to a numerical simulation model. Numerical simulation of tunnel advance cart serve as a powerful tool in the design and decision making on site. But this has to be done almost in real-time, that means that the calculation and the necessary post-processing must be finished, before the engineer on site is forced to make his decisions. this circumstance places a very specific challenge to the used hard and software. In the beginning of 1997 the Austrian Science Fund established a Joint Research Initiative (JRI) Numerical Simulation in Tunnelling (SITU) [1, 2] with a budget of about 3 Million 6 for 5,years. Currently about 24 professionals from 3 universities are working on the this research initiative. the aim of the JRI is to develop a framework for the application of computer based numerical simulation tools. these tools can then be used for the estimation of the required tunnel support and the required construction measures at the planning stage and during construction with the view of improving the economy and safety of tunnels. A very important task in this field is the visualisation of the available usually very, large amount of data. An excellent quality, technical and physical correctness, combined with real-time and user friendliness in this area is absolutely necessary to

关键词： Air conditioning Computational modeling High performance computing Mechanical factors Numerical models Numerical simulation Power engineering and energy Smoothing methods Tunneling Visualization

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A Cross-Layer Design for Decentralized Detection in Tree sensor Networks

A Cross-Layer Design for Decentralized Detection in Tree Sen...

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international conference on distributed computing in sensor systems (DCOSS)

作者： Ashraf Tantawy Xenofon Koutsoukos Gautam Biswas Institute for Software Integrated Systems (ISIS) Department of Electrical Engineering and Computer Science Vanderbilt University Nashville TN USA

the design of wireless sensor networks for detection applications is a challenging task. On one hand, classical work on decentralized detection does not consider practical wireless sensor networks. On the other hand, practical sensor network design approaches that treat the signal processing and communication aspects of the sensor network separately result in sub optimal detection performance because network resources are not allocated efficiently. In this work, we attempt to cross the gap between theoretical decentralized detection work and practical sensor network implementations. We consider a cross-layer approach, where the quality of information, channel state information, and residual energy information are included in the design process of tree-topology sensor networks. the design objective is to specify which sensors should contribute to a given detection task, and to calculate the relevant communication parameters. We compare two design schemes: (1) direct transmission, where raw data are transmitted to the fusion center without compression, and (2) in-network processing, where data is quantized before transmission. For both schemes, we design the optimal transmission control policy that coordinates the communication between sensor nodes and the fusion center. We show the performance improvement for the proposed design schemes over the classical decoupled and maximum throughput design approaches.

关键词： Wireless sensor networks Wireless communication Quantization Media Access Protocol Random variables Optimization

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IoT-Edge-Cloud computing Framework for QoS-Aware Computation Offloading in Autonomous Mobile Agents: Modeling and Simulation 1

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6th international conference on Mobile, Secure and Programmable Networking, MSPN 2020

作者： Ismail, Leila Materwala, Huned Distributed Computing and Systems Research Laboratory Department of Computer Science and Software Engineering College of Information Technology United Arab Emirates University Al Ain Abu Dhabi15551 United Arab Emirates National Water and Energy Center United Arab Emirates University Al Ain Abu Dhabi15551 United Arab Emirates

ISBN: (数字)9783030675509

ISBN: (纸本)9783030675493

Edge-cloud computing is an emerging computational model that allows offloading of service requests by the autonomous mobile agents from the edge-server to the cloud-server. this is to reduce the network latency prevalent in the cloud-IoT model. However, Quality-of-Service (QoS)-Aware computation offloading in a heterogeneous and dynamic edge-cloud environment remains an open problem. In this paper, we propose a queuing theory-based edge-cloud computing framework for QoS-aware offloading in mobile autonomous agents. this framework model decides whether to execute an incoming request to the edge-server on the edge itself or to offload to one of the heterogeneous cloud servers such that the request’s execution time is the minimum. To model a request’s execution time, we consider the processing capabilities and the queues overheads of the edge and cloud servers, and the edge-cloud communications’ time. the details of the evaluation results, using dataset generated from real-life scenarios, are presented in the paper. © 2021, Springer Nature Switzerland AG.

关键词： Quality of service

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Multifrontal Hierarchically Solver for 3D Discretized Elliptic Equations 6th

Multifrontal Hierarchically Solver for 3D Discretized Ellipt...

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6th international conference on Finite Difference Methods - theory and Applications (FDM - T and A)

作者： Solovyev, Sergey Inst Petr Geol & Geophys SB RAS Novosibirsk 630090 Russia

ISBN: (纸本)9783319202396;9783319202389

this paper presents a fast direct solver for 3D discretized linear systems using the supernodal multifrontal method together with low-rank approximations. For linear systems arising from certain partial differential equations (PDEs) such as elliptic equations, during the Gaussian elimination of the matrices with Nested Dissection ordering, the fill-in of L and U factors loses its sparsity and contains dense blocks with low-rank property. Off-diagonal blocks can be efficiently approximated with low-rank matrices;diagonal blocks approximated with semiseparable structures called hierarchically semiseparable (HSS) representations. Matrix operations in the multifrontal method are performed in low-rank arithmetic. We present efficient way to organize the HSS structured operations along the elimination. To compress dense blocks into low-rank or HSS structures, we use effective cross approximation (CA) approach. We also use idea of adaptive balancing between robust arithmetic for computing the small dense blocks and low-rank matrix operations for handling with compressed ones while performing the Gaussian elimination. this new proposed solver can be essentially parallelized both on architecture with shared and distributed memory and can be used as effective preconditioner. To check efficient of our solver we compare it with Intel MKL PARDISO - the high performance direct solver. Memory and performance tests demonstrate up to 3 times performance and memory gain for the 3D problems with more than 10(6) unknowns. therefore, proposed multifrontal HSS solver can solve large problems, which cannot be resolved by direct solvers because of large memory consumptions.

关键词： Solvers Gaussian elimination elliptic equations Linear system matrices distributed memory Performance Tests

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Reference Point-Based Search Scheme for Multiobjective Evolutionary Algorithm

Reference Point-Based Search Scheme for Multiobjective Evolu...

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international conference on Soft computing and Intelligent systems

作者： Satoru HIWA Tomoyuki HIROYASU Hisatake YOKOUCHI Mitsunori MIKI Masashi NISHIOKA Graduate School of Life and Medical Sciences Doshisha University Faculty of Life and Medical Sciences Doshisha University Faculty of Science and Engineering Doshisha University Graduate School of Engineering Doshisha University

ISBN: (纸本)9781467327428

In multiobjective optimization problems, it is important to derive solutions with high accuracy, uniform distribution, and broadness. Here, we propose a two-phase search process to improve the accuracy and broadness of solutions. In the first phase, the accuracy of the solutions is improved, and a reference point specified by a decision maker is set and utilized for the search. In the second phase, the solutions are broadened using the distributed Cooperation Scheme. the numerical results indicated that the proposed search scheme was capable of deriving broader solutions than the conventional multiobjective evolutionary algorithm without deterioration of accuracy.

关键词： Evolutionary algorithm distributed cooperation scheme Broadness Reference point

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Energy Efficient Fractional Coverage Schemes for Low Cost Wireless sensor Networks

Energy Efficient Fractional Coverage Schemes for Low Cost Wi...

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international conference on distributed computing systems Workshop

作者： Mao Ye E. Chan Guihai Chen Jie Wu Department of Computer Science City University of Hong Kong Hong Kong China National Laboratory of Novel Software Technology Nanjing University China Department of Computer Science and Engineering Florida Atlantic University USA

An effective approach for energy conservation in wireless sensor networks is scheduling sleep intervals for extraneous nodes, while the remaining nodes stay active to provide continuous service. Depending on different types of applications, the network lifetime may be much more critical than covering the entire monitored area at every data reporting round. this paper presents a competition based distributed scheme called FCS to address the fractional coverage problem in wireless sensor networks with tiny, lowcost sensors. through localized, energy-aware competition, the proposed scheme achieves the desired fractional coverage with a minimum number of active sensors. By taking account of both residual battery energy and recent reporting latency, an enhanced version of FCS which uses a novel competition metric to constrain the maximum reporting latency throughout the network is also proposed. these two schemes also contain the desirable property that it can be extended easily to handle the more general k-coverage problem.

关键词： Energy efficiency Costs Wireless sensor networks Delay sensor phenomena and characterization Batteries Computer science Energy conservation Monitoring Space technology

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Kinect Based Virtual Referee For Table Tennis Game: TTV (Table Tennis Var System) 6

Kinect Based Virtual Referee For Table Tennis Game: TTV (Tab...

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6th international conference on Information Science and Control Engineering (ICISCE)

作者： Moshayedi, Ata Jahangir Chen, Zuyan Liao, Liefa Li, Shuai Jiangxi Univ Sci & Technol Sch Informat Engn Ganzhou 341000 Jiangxi Peoples R China Hong Kong Polytech Univ Dept Comp Hong Kong Peoples R China

ISBN: (纸本)9781728157122

Today's game quality is more affected by referee decisions. the history shows that the error in a referee's decision may change the whole result of a game. It seems to rely on just the referee's decision and always combines with the errors. this fact is even bolded in important games like the World Cup or Olympics which may cause the rank of the team, players, etc. Recently, to solve this problem, the new concept of VAR (video assistant referee) has been introduced and had also been hired during the football World Cup match 2018. Even some methods like video check-ins in volleyball games or bypass signal in Swordsmanship (sword fighting) long back was used. But still, so many demand games are missed. Statistically, almost approximately 8 hundred million people are playing table tennis in the world but due to the ball speed in this game which sometimes increases up to 69.9 miles per hour (112.4931 km/h) which brings the limitation to hire and use the VAR systems. In this research paper, a novel VAR system (TTV system) based on Kinect and Raspberry pi has been presented. the main aspect of this design is to have a portable system which can be used for any type of LCD system and help the referees to count the ball better during the game to have a more qualified game. In the proposed TTV algorithm, the two methods of contour and depth are merged to have better ball detection. the experiment results in showing the proposed algorithm and systems success in real game and its ability to implement in the real game which has not been reported before.

关键词： VAR video assistant referee raspberry pi Kinect sensor table tennist

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KNIVES: A distributed demand side management system - Integration with ZigBee wireless sensor network and application -

KNIVES: A distributed demand side management system - Integr...

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ieee international conference on Industrial Informatics (INDIN)

作者： Toshihiko Handa Akihiro Oda Tomokazu Tachikawa Junichi Ichimura Yuji Watanabe Hiroaki Nishi School of Integrated Design Engineering Graduate School of Science and Technology Keio University Yokohama Japan Department of System Design Faculty of Science and Technology Keio University Yokohama Japan Product Development Department IT Service Sect Tokyo Gas Company Limited Tokyo Japan

KNIVES is proposed as Internet based demand and supply control system and controls power by using distributed and cooperative power control algorithm. However, if KNIVES aims to maintain indoor environmental amenity, installed locations and the numbers of environmental sensors are critical issues. Wireless sensor network is useful to measure environmental data of various points where a wired sensor is not available or cost of wired installation is expensive, and makes it easy to install or to relocate the sensors. In this paper, we implement ZigBee wireless sensor network and make operational test to discuss about the application of demand control method by using wireless sensor network. Furthermore, we propose some demand control application with ZigBee, customized environment-based control and head-count-based control, to make DSM more efficient.

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Real-Time Control of Humanoid Robotic Arm Motion Using IT2FLC Based on Kinect sensor 1

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6th international conference on Innovative computing and Communication, ICICC 2023

作者： Abulhail, Saif F. Al-Faiz, Mohammed Z. College of Information Engineering Al-Nahrain University Baghdad Iraq

ISBN: (数字)9789819933150

ISBN: (纸本)9789819933143

the control of 5-degree of freedom humanoid robotic arm (HRA) in real time is proposed based on Kinect sensor. HRA model is designed based on Denavit–Hartenberg method. Kinect camera is employed to extract and pass the desired position from user to the inverse kinematic (IK). Next, IK is performed to find the desired angles for HRA model. these angles are converted to pulse width modulation signals and fed as a desired angle to each servo motor. then, the interval Type2 fuzzy logic controller (IT2FLC) is work in order to minimize the root mean square error (RMSE) between the desired and actual position. Finally, the simulation of graphical user interface (GUI) is designed to show the controlled motion of HRA model. Implementation and calculation results show the efficiency of the IT2FLC implementation after it is compared with Type1FLC (T1FLC). the simulation results showed that the IT2FLC is more accurate than T1FLC. the RMSE calculated by IT2FLC is less than the T1FLC. © the Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Inverse kinematics

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Evaluating Software-Defined Networking-Driven Edge Clouds for 5G Critical Communications 9

Evaluating Software-Defined Networking-Driven Edge Clouds fo...

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9th international conference on Information and Communication Technology Convergence (ICTC)

作者： Kurtz, Fabian Laukhin, Igor Bektas, Caner Wietfeld, Christian TU Dortmund Univ Commun Networks Inst Otto Hahn Str 6 D-44227 Dortmund Germany

ISBN: (纸本)9781538650417

Modern societies are increasingly dependent on Critical Infrastructures (CIs) such as Smart Grids (SGs) and Intelligent Transportation systems (ITS). Due to continuously rising demands in terms of efficiency and capabilities, complex control and monitoring strategies are employed. these in turn rely on robust, high performance communication networks. As CIs are distributed systems with diverging demands, the deployment of individual networks is often too costly and time consuming. Furthermore, the vast physical scope traditionally results in unacceptably high end-to-end delays. therefore, a convergence of public and dedicated networks, as well as traditional Information and Communication Technology (ICT) with Information Technology (IT), are considered key aspects of 5G for addressing these challenges. Hence, this paper provides an empirical evaluation of CI communication services on basis of a Software-Defined Networking (SDN) and Network Function Virtualization (NFV) driven Edge Clouds (ECs) within a sliced 5G network. By shifting computing resources from the backbone or back office towards the network's access level, ECs allow for drastically reduced delays. Also, the traffic load on several layers of the communication infrastructure is reduced, as data can be kept locally, i.e. close to the source. this is demonstrated by shifting an ITS application from a central cloud to the EC. Services are transferred step-wise and transparently, minimizing interruptions while dynamically adapting to the backhaul's available data rate. the developed system is evaluated under realistic traffic conditions within a physical testing enviromnent.

关键词： Cloud computing Delays 5G mobile communication Testing Network slicing Quality of service Communication networks

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