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10th Majorov International Conference on Software Engineering and Computer systems, MICSECS 2018

作者： Bogatyrev, Stanislav Bogatyrev, Anatoly Liubich, Sergei Wahle, Fabian JSC "NEO Saint Petersburg Competence Center" St. Petersburg Russia

The design of the distributed Decentralized Storage Platform (DDSP) requires to develop an efficient data validation method taking into account the network scalability issue, possibility to check data without knowledge of content and privacy protection of users data. DDSP is aimed at ensuring the availability and integrity of data. The aim of this research is to develop a zero-knowledge data validation method for the decentralized storage system for minimizing data transferring to maintain the network scalability and minimizing computational cost on the side of a storage node to maintain a large number of parallel interactions, and on the side of a validating node. The integrity guarantee is achieved due to the proposed data validation method based on the homomorphic hash function which allows to verify the integrity of data on a storage node without transferring real data to a validating party over the network. The computational complexity of validations depends linearly on the size of validated data and is well suited for parallelization. © 2019 CEUR-WS. All rights reserved.

关键词： Scalability

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CRAWL: A Trace Routing Algorithm Based on Hybrid Two-Layer Topology 33rd

CRAWL: A Trace Routing Algorithm Based on Hybrid Two-Layer T...

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33rd International Conference on Advanced Information Networking and Applications, AINA 2019

作者： Zheng, Li-ming Long, Wen-feng Liu, Yu-Jia Sun, Wei-dong Department of Message Communication Armed Police Officer Academy Chengdu China National Key Laboratory for Parallel and Distributed Processing School of Computer National University of Defense Technology Changsha China

ISBN: (纸本)9783030150341

Data distribution is a key technology for resources convergence and sharing in distributed environment. To better meet the requirement for real time data distribution in the dynamic network, a trace routing algorithm named CRAWL based on the hybrid two-layered topology is put forward. The algorithm contains an overlay topology named CBDLO, upper of which consists of multiple distributed balanced binary trees corresponding to different properties and the lower of which is an unstructured topology. CRAWL forwards the data on the lower unstructured topology in the form of random walk, so that the data can be sent to the corresponding upper topology entry. It also includes a matching algorithm named CDM for the parallel matching data properties on the upper distributed and balanced binary tree and transmitting the matched data to the nodes that are interested in the data. The experimental results show that the algorithm can effectively support large-scale data distribution in a dynamical network, reduce distribution overhead and matching delays. © 2019, Springer Nature Switzerland AG.

关键词： Routing algorithms

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Internet-QoE 2019: 4th Internet-QoE workshop on QoE-based Analysis and Management of Data Communication Networks 19

Internet-QoE 2019: 4th Internet-QoE Workshop on QoE-based An...

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25th Annual International Conference on Mobile Computing and Networking (MobiCom)

作者： Casas, Pedro Wamser, Florian Bustamante, Fabian Choffnes, David Austrian Inst Technol Seibersdorf Austria Univ Wurzburg Wurzburg Germany Northwestern Univ Evanston IL 60208 USA Northeastern Univ Boston MA 02115 USA

ISBN: (纸本)9781450361699

After three highly successful editions of the Internet-QoE workshop organized at ACM SIGCOMM 2016, ACM SIGCOMM 2017, and IEEE ICDCS 2018, the goal of the fourth edition of the Internet-QoE workshop is to scale the concepts of Quality of Experience (user satisfaction, user engagement, and behavioral analysis) out of the lab studies context and bring it to the analysis and operation of distributed systems and communication networks, giving a user-centric perspective to the research performed by the MOBICOM community. By fostering an explicit and deep integration of the end-user directly into the design, analysis and management of large-scale operational networks, we expect to reduce the gap between QoE research and its application to future network management paradigms, as well as to provide a more targeted end-user perspective to the research on distributed communication systems. The 4th edition of Internet-QoE also focuses on novel end-user services enabled by next generation technologies such as immersive media (3D, Virtual reality and Augmented reality), self-driving cars, intelligent manufacturing systems, Industry 4.0 and tactile Internet, 5G ultra-low-latency mobile networks, and real-time applications.

关键词： User experience Quality of Experience user engagement distributed large-scale measurements interdisciplinary workshop

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distributed Demand Response Management

Distributed Demand Response Management

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Clemson University Power systems Conference (PSC)

作者： Pramod Herath Ganesh K. Venayagamoorthy Real-Time Power and Intelligent Systems Laboratory Clemson University Clemson SC USA School of Engineering University of KwaZulu-Natal Durban South Africa

ISBN: (数字)9781728193847

ISBN: (纸本)9781728193854

In this work, a distributed hierarchical demand response (DR) scheme for residential customers is introduced, which attempts optimizing power usage of a variety of appliances for many customers in a parallel and efficient fashion. The DR scheme makes use of a `service provider' (SP) model which would sit in various levels of the power system in a hierarchical manner, optimizing DR load at each level by scheduling energy for the lower levels. At the lowest level, SP would use a direct load control method to schedule the customer appliances. Models are developed to quantify the discomfort levels to the customer as well as to quantify demand response targets for the utility. Since the utility targets and customer comfort targets are often conflicting, SP would attempt to schedule energy usage such that a common ground is reached between them. A Differential Evolution based solving method is proposed to carry out the optimization for the SP. The solution is simulated for many customers and the results are reported.

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PEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for distributed Generation systems

PEDG 2019 - 2019 IEEE 10th International Symposium on Power ...

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10th IEEE International Symposium on Power Electronics for distributed Generation systems, PEDG 2019

ISBN: (纸本)9781728124551

The proceedings contain 198 papers. The topics discussed include: a novel current sharing method by grouping transformer"s secondary windings for multi-phase LLC resonant converter;design of controller based on ADRC strategy for three-phase UPS;a single-carrier PWM method for multilevel converters;an interleaved boost converter with parallel input and output series for renewable energy system;control strategy of three-phase four-wire three-leg inverters;distributed cooperative control for multiple DC electric springs with novel topologies applied in DC microgrid;real-time models of advanced energy conversion systems for large-scale integration studies;ripple energy buffer for microgrid connected hydrogen energy storage system;and modeling and studies of the two-winding three-phase permanent magnetic synchronous generator of offshore wind turbines.

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real time coordinated optimization dispatch model for AC/DC hybrid distribution network 8

Real time coordinated optimization dispatch model for AC/DC ...

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8th Renewable Power Generation Conference, RPG 2019

作者： Huang, Yuhui Zhang, Ruifeng Liu, Dong Li, Qingsheng Tang, Xueyong School of Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China Guizhou Electric Power Test Research Institute Guiyang550000 China Guizhou Power Grid Co. Ltd Research Planning Centre Guiyang550002 China

ISBN: (纸本)9781839531255

With the gradual increase of the penetration rate of new energy, the cyber physical system paves a new way for real time dispatch, rational planning and effective utilization of new energy. This paper establishes a dynamic multi-agent real-time coordinated control model for the framework of a typical AC/DC hybrid distribution network and proposes the distributed algorithm. The algorithm includes two parts: optimized dispatch and coordinated control. Firstly, by dispatching and optimizing primary energy, large-scale use and sharing of distributed renewable energy can be realized, energy supply cost can be reduced, and the reliability of energy supply can be improved. Energy Internet provides powerful support for power systems, heating systems, and other major energy networks. Then a coordinated control model based on a dynamic multi-agent system is established to eliminate load fluctuation quickly and efficiently, maintaining the stability of the energy internet. Finally, multi-agent containment control algorithm was applied in the voltage control to guarantee high power quality. According to the actual operation situation of physical devices, the adjustment term serves as a feedback to do real-time correction, in order to make the results satisfy all constraints. Simulation results were presented to demonstrate the effectiveness and robustness of the proposed algorithm. © 2019 Institution of Engineering and Technology. All rights reserved.

关键词： parallel algorithms

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Cloud workload prediction based on workflow execution time discrepancies

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CLUSTER COMPUTING-THE JOURNAL OF NETWORKS SOFTWARE TOOLS AND APPLICATIONS 2019年第3期22卷 737-755页

作者： Kecskemeti, Gabor Nemeth, Zsolt Kertesz, Attila Ranjan, Rajiv Liverpool John Moores Univ Dept Comp Sci Liverpool L3 3AF Merseyside England MTA SZTAKI Lab Parallel & Distributed Syst H-1111 Budapest Hungary Univ Szeged Software Engn Dept H-6720 Szeged Hungary Newcastle Univ Sch Comp Newcastle Upon Tyne NE4 5TG Tyne & Wear England

Infrastructure as a service clouds hide the complexity of maintaining the physical infrastructure with a slight disadvantage: they also hide their internal working details. Should users need knowledge about these details e.g., to increase the reliability or performance of their applications, they would need solutions to detect behavioural changes in the underlying system. Existing runtime solutions for such purposes offer limited capabilities as they are mostly restricted to revealing weekly or yearly behavioural periodicity in the infrastructure. This article proposes a technique for predicting generic background workload by means of simulations that are capable of providing additional knowledge of the underlying private cloud systems in order to support activities like cloud orchestration or workflow enactment. Our technique uses long-running scientific workflows and their behaviour discrepancies and tries to replicate these in a simulated cloud with known (trace-based) workloads. We argue that the better we can mimic the current discrepancies the better we can tell expected workloads in the near future on the real life cloud. We evaluated the proposed prediction approach with a biochemical application on both real and simulated cloud infrastructures. The proposed algorithm has shown to produce significantly (similar to 20%) better workload predictions for the future of simulated clouds than random workload selection.

关键词： Workload prediction Cloud computing Simulation Scientific workflow

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NeSTiNg: Simulating IEEE time-sensitive Networking (TSN) in OMNeT++

NeSTiNg: Simulating IEEE Time-sensitive Networking (TSN) in ...

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2019 International Conference on Networked systems, NetSys 2019

作者： Falk, Jonathan Hellmanns, David Carabelli, Ben Nayak, Naresh Durr, Frank Kehrer, Stephan Rothermel, Kurt University of Stuttgart Institute of Parallel and Distributed Systems Stuttgart70569 Germany CTO Office Hirschmann Automation and Control GmbH Neckartenzlingen72654 Germany

ISBN: (纸本)9781728105680

IEEE 802.1 time-sensitive Networking (TSN) enables real-time communication with deterministically bounded network delay and jitter over standard IEEE 802.3 networks ('Ethernet'). In particular, TSN specifies a time-triggered scheduling mechanism in IEEE Std 802.1Qbv implemented by switches to control when outgoing queues get access to switch ports. Besides this time-triggered scheduling mechanism, other scheduling mechanisms can be active in the network at the same time including priority queuing and a credit-based shaper. Moreover, further supporting mechanisms such as the possibility to interrupt frames already in transmission (frame preemption) are specified by the TSN standards. Overall, this leads to a complex network infrastructure transporting both, real-time and non-real-time traffic in one converged network, making it hard to analyze the behavior of converged networks. To facilitate the analysis of TSN networks, we present TSN-specific extensions to the popular OMNeT++/INET framework for network simulations in this paper including, in particular, the time-triggered scheduling mechanism of IEEE Std 802.1Qbv. Besides the design of the TSN simulator, we present a proof-of-concept implementation and exemplary evaluation of TSN networks. © 2019 IEEE.

关键词： Quality of service

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A comparison of distributed stream processing systems for time series analysis 18

A comparison of distributed stream processing systems for ti...

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Die 18. Fachtagung "Datenbanksysteme fur Business, Technologie und Web" , BTW 2019 workshopband - 18th Symposium "Database systems for Business, Technology and Web", BTW 2019 workshop

作者： Gehring, Melissa Charfuelan, Marcela Markl, Volker Technische Universität Berlin FG DIMA Fakultät IV Germany DFKI Technische Universität Berlin Germany Technische Universität Berlin DFKI Germany

ISBN: (纸本)9783885796848

Given the vast number of data processing systems available today, in this paper, we aim to identify, select, and evaluate systems to determine the one that is better suited to use in conducting time series analysis. Published studies of performance are used to compare several open-source systems, and two systems are further selected for qualitative comparison and evaluation regarding the development of a time series analytics task. The main interest of this work lies in the investigation of the Ease of development. As a test scenario, a discrete Kalman filter is implemented to predict the closing price of stock market data in real-time. Basic functionality coverage is considered, and advanced functionality is evaluated using several qualitative comparison criteria. © 2019 Gesellschaft fur Informatik (GI). All rights reserved.

关键词： time series analysis

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Massive Finger-vein Identification based on Local Line Binary Pattern under parallel and distributed systems 38

Massive Finger-vein Identification based on Local Line Binar...

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38th International Conference of the Chilean-Computer-Science-Society (SCCC)

作者： Hernandez-Garcia, Ruber Guidet, Sebastian Barrientos, Ricardo J. Emmanuel Frati, Fernando Univ Catolica Maule Fac Ciencias Ingn Dept DCI Lab LITRP Talca Chile Univ Nacl Chilecito Dept Ciencias Basicas & Tecnol Chilecito La Rioja Argentina

ISBN: (纸本)9781728156132

Massive individuals identification is a challenging problem in modern society. Particularly, finger-vein recognition is an emerging biometric technique with several advantages, especially in terms of security against forgery. In this paper, we propose a hybrid parallel matching process for finger-vein recognition under two different parallel platforms, by using the Local Line Binary Pattern descriptor and Hamming distance. Our proposal aims to reduce the computation time of the matching process for massive individuals identification by using finger-vein patterns. Extensive evaluation shows that our approach obtains a high speed-up under a multi-core platform and a close to linear behavior for a multi-node platform. The results with our hybrid parallel system show that it is suitable for real-time individuals identification, achieving a speed-up up to 129.98x. To the best of our knowledge, our work is the first implementation of finger-vein recognition under a parallel platform, which is the main contribution of this paper.

关键词： Finger-vein recognition Individuals identification Local Line Binary Pattern Multi-core algorithm

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