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A Tool for Reliable Model-based Design For programming Logic Controllers

IFAC Proceedings Volumes 2013年第25期46卷 71-76页

作者： M.H. Schwarz H. Sheng W. Chaaban J. Börcsök Dept. Safety Computer Technology University of Kassel Kassel Germany Dept. Computer Architecture and System Programming University of Kassel Kassel Germany

This paper presents an automated code generation and validation, verification approach to convert model based developments into IEC 61131-3 conform function blocks. IEC 61131-3 programming languages are supported by PLC manufacturers and software environment developers and provide the possibility that novel and intelligent algorithms can be directly operated on industrial accepted systems. Railway and transportation also receive drastic changes from purely hardware based systems to microcontroller + software driven systems. However, the conversion has to follow certain steps to ensure that the adaptation is done correctly and functionality is not alternated, added or deleted. Concepts suggested by different international standards such as the IEC 61508 can help to derive a tool chain to verify the generated code.

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Automatic Detection of Smishing Attacks by Machine Learning Methods 1

Automatic Detection of Smishing Attacks by Machine Learning ...

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1st International Informatics and Software Engineering Conference, IISEC 2019

作者： Balim, Caner Gunal, Efnan Sora Afyon Kocatepe University Dept. of Computer Programming Sandikli Vocational School Afyonkarahisar Turkey Eskisehir Osmangazi University Dept. of Computer Engineering Faculty of Engineering and Architecture Eskisehir Turkey

ISBN: (纸本)9781728139920

Phishing is a type of cyber-attack aiming to steal people's confidential information using a bait. Smishing is a form of phishing that is carried out via SMS messages sent to mobile phones. Attackers intend to steal the private information of their victims through the content they send in their SMS messages. Therefore, the detection of smishing messages has a vital role in information security. In this work, a machine learning-based model is proposed to detect smishing messages. Experiments conducted on a relatively large dataset, which contains legitimate and smishing messages, have shown that the proposed model offers a promising detection performance. © 2019 IEEE.

关键词： Large dataset

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Analysis of community structure in Wikipedia (poster) 09

Analysis of community structure in Wikipedia (poster)

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18th International World Wide Web Conference, WWW 2009

作者： Lizorkin, Dmitry Medelyan, Olena Grineva, Maria Inst. for System Programming Russian Academy of Sciences Russia Computer Science Dept. Univ. of Waikato New Zealand

ISBN: (纸本)9781605584874

We present the results of a community detection analysis of the Wikipedia graph. Distinct communities in Wikipedia contain semantically closely related articles. The central topic of a community can be identified using PageRank. Extracted communities can be organized hierarchically similar to manually created Wikipedia category structure. Copyright is held by the author/owner(s).

关键词： Population dynamics

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Complexity Reduced IIR Filter Design for FPGA 2

Complexity Reduced IIR Filter Design for FPGA

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2nd IEEE International Conference on system Analysis and Intelligent Computing, SAIC 2020

作者： Sergiyenko, Anatoliy Serhienko, Anastasia Igor Sikorsky Kyiv Polytechnic Institute Dept. of Computer Engineering Kyiv Ukraine Igor Sikorsky Kyiv Polytechnic Institute Dept. of System Programming and Specialized Computer Systems Kyiv Ukraine

ISBN: (纸本)9781728190822

In this paper, a method of high order IIR filter design is proposed in which the coefficients in the canonical binary number system representation are searched by the simulated annealing algorithm. The high-quality IIR filters are designed using the all-pass filter stages, methods of masking filters and multiplied delays. It was proven, that if the coefficients of the multiplierless filter have no more than three summands in their representation, then its pipelined implementation in FPGA has the highest clock frequency. The use of the VHDL language in all the steps of the filter design helps to speed-up and improve the filter optimization. © 2020 IEEE.

关键词： IIR filters

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Investigation of Parallel Particle Swarm Optimization algorithm with reduction of the search area

Investigation of Parallel Particle Swarm Optimization algori...

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2010 IEEE International Conference on Cluster Computing Workshops and Posters, Cluster Workshops 2010

作者： Lančinskas, Algirdas Žilinskas, Julius Ortigosa, Pilar Martínez Dept. of System Analysis Institute of Mathematics and Informatics Vilnius Lithuania Dept. of Computer Architecture and Electronics University of Almería Almería Spain

ISBN: (纸本)9781424483969

We consider a population based Particle Swarm Optimization (PSO) algorithm and a few modifications to increase quality of optimization. Several strategies are investigated to exchange data between processors in parallel algorithm. Experimental investigation is performed on Multiple Gravity Assist problem. The results are compared with original PSO. © 2010 IEEE.

关键词： Global optimization

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Sustained petaflop and beyond: Can parallel computing systems meet the challenges?

Sustained petaflop and beyond: Can parallel computing system...

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19th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2005

作者： Gao, Guang R. Computer Architecture and Parallel System Laboratory Dept. of Electrical and Computer Engineering University of Delaware Department of Electrical and Computer Engineering University of Delaware

ISBN: (纸本)0769523129

Breakthrough-quality scientific discoveries in the new millennium (such as those expected in computation biology and others), along with optimal engineering designs, have created a demand for High-End Computing (HEC) systems with sustained performance requirements at a petaflop scale and beyond. Despite the very pessimistic (if not negative) views on parallel computing systems that have prevailed in 1990s, there seems to be no other viable alternatives for such HEC systems. In this talk, we present a fresh look at the problems facing the design of petascale parallel computing systems. We review several fundamental issues that such HEC parallel computing systems must resolve. These issues include: execution models that support dynamic and adaptive multithreading, fine-grain synchronization, and global name-space and memory consistency. Related issues in parallel programming, dynamic compilation models, and system software design will also be discussed. Present solutions and future direction will be discussed based on (1) application demand (e.g. computation biology and others), (2) the recent trend as demonstrated by the HTMT, HPCS, and the Blue-Gene Cyclops (e.g. Cyclops-64) architectures, and (3) a historical perspective on influential models such as dataflow, along with concepts learned from these models.

关键词： Parallel processing systems

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Advanced tool for predictive diagnosis and maintenance using case-based reasoning and fuzzy logic

Advanced tool for predictive diagnosis and maintenance using...

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25th European Modeling and Simulation Symposium, EMSS 2013

作者： Christova, Nikolinka Atanassov, Atanas Dept. of Automation of Industry University of Chemical Technology and Metallurgy 1756 Sofia Bulgaria Dept. of Programming and Computer System Application University of Chemical Technology and Metallurgy 1756 Sofia Bulgaria

ISBN: (纸本)9788897999225

The application of computational intelligence in condition-based maintenance and diagnosis plays a leading role in the technology development of intelligent manufacturing systems. Case-Based Reasoning (CBR) is mostly used in designing the real time application having the decision support capability. In this study implementation of fuzzy logic in the CBR systems that deriving effective knowledge representation schemes has been described. The benefits of the approach have been presented. The applications of the developed advanced tool based on fuzzy logic and CBR for solving the real problems of predictive diagnosis and maintenance in industrial systems have been discussed. © 2013 DIME UNIVERSITÀ DI GENOVA.

关键词： Case based reasoning

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Designing a video-on-demand system for a Brazilian high speed network

Designing a video-on-demand system for a Brazilian high spee...

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26th IEEE International Conference on Distributed Computing systems Workshops, ICDCS 2006

作者： Souza, L. Ripoll, A. Yang, X.Y. Hernández, P. Suppi, R. Luque, E. Cores, F. Computer Architecture and Operating System Dept. Universitat Autonoma de Barcelona Spain Computer Science and Industrial Engineering Universitat de Lleida Spain

ISBN: (纸本)0769525415

Despite the availability of video-on-demand (VoD) services in a number of cities around the world, the large-scale deployment of VoD services has not been widely explored due to economic constraints. The high complexity founded in these systems makes the design process very difficult. This study presents a VoD system design for a high-speed metropolitan network, based on ATM technology, located in Brazil. To accomplish this goal, we have utilized our own simulation-based tool for VoD design called VODSim. This tool allows VoD research on any VoD platform, simulating the complete flow path followed by requests from clients to servers passing through the network infrastructure, allowing the configuration and tuning of multiple system parameters. Using VODSim, we analyse possible VoD architectures for the proposal environment (i.e. Centralized-server, Independent-servers, One-level-proxies and Distributed-servers), studying key-parameters that have influence in system design. Experimental results show that Distributed-server architecture is the one that adjusts better to the analyzed infrastructure, improving streaming capacity by 16%, 25% and 28% more than One-level-proxies, Centralized and Independent-servers respectively. Taking in account future growth in VoD system, the Distributed-server even provides an unlimited scalability through new local network incorporation and using P2P techniques. © 2006 IEEE.

关键词： systems analysis

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Enhancing end-to-end QoS for multimedia streaming in IMS-based networks

Enhancing end-to-end QoS for multimedia streaming in IMS-bas...

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2nd International Conference on systems and Networks Communications, ICSNC 2007

作者： Özçelebi, Tanir Radovanovic, Igor Chaudron, Michel Eindhoven University of Technology Dept. of Mathematics and Computer Science System Architecture and Networking PO. Box 513 5600 MB Eindhoven Netherlands

ISBN: (纸本)9780769529387

Convergence of the emerging IP Multimedia Subsystem (IMS) includes unlicensed, nondedicated and nondeterministic, hence uncontrollable, computer access networks for IP multimedia services. It enables provision of resource demanding real-time services and multimedia communication raising new end-to-end Quality-of-Service (QoS) challenges, for which quality adaptation using resource management is proposed as a solution in this paper. This is an integrated solution taking both IMS and computer access networks into account as well as the two end-devices and the application servers (AS) involved in communication. The best user experience is targeted under real-time variation of available network (e.g. bandwidth, buffer space) and end-device (e.g. battery, CPU, memory, storage) resources throughout a session. The multimedia content is dynamically adapted to fit the resource availability variations, achieving maximum system (i.e. network and end-devices) resource utilization and enhanced QoS. The resource availability update signalling is carried over Session Initiation Protocol (SIP) during the session. This is work in progress. © 2007 IEEE.

关键词： Quality of service

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A collaborative memory system for high-performance and cost-effective clustered architectures 11

A collaborative memory system for high-performance and cost-...

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1st Workshop on architectures and systems for Big Data, ASBD 2011 - Held in Conjunction with the 20th International Conference on Parallel architectures and Compilation Techniques, PACT 2011

作者： Samih, Ahmad Wang, Ren Maciocco, Christian Tai, Tsung-Yuan Charlie Solihin, Yan System Architecture Lab Hillsboro OR United States Dept. of Electical and Computer Engineering North Carolina State University Raleigh NC United States

ISBN: (纸本)9781450314398

With the fast development of highly integrated distributed systems (cluster systems), especially those encapsulated within a single platform [28, 9], designers have to face interesting memory hierarchy design choices that attempt to avoid disk storage swapping. Disk swapping activities slow down application execution drastically. Leveraging remote free memory through Memory Collaboration has demonstrated its cost-effectiveness compared to overprovisioning for peak load requirements. Recent studies propose several ways on accessing the under-utilized remote memory in static system configurations, without detailed exploration on the dynamic memory collaboration. Dynamic collaboration is an important aspect given the run-time memory usage fluctuations in clustered systems. In this paper, we propose an Autonomous Collaborative Memory system (ACMS) that manages memory resources dynamically at run time, to optimize performance, and provide QoS measures for nodes engaging in the system. We implement a prototype realizing the proposed ACMS, experiment with a wide range of real-world applications, and show up to 3x performance speedup compared to a non collaborative memory system, without perceivable performance impact on nodes that provide memory. Based on our experiments, we conduct detailed analysis on the remote memory access overhead and provide insights for future optimizations. Copyright 2012 ACM.

关键词： Cost effectiveness

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