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Decoupled feedforward-feedback periodic event-triggered control for disturbance rejection ⁎

IFAC-PapersOnLine 2020年第2期53卷 2708-2713页

作者： Ernesto Aranda-Escolástico María Guinaldo José Luis Guzmén Sebastián Dormido Dep. of Software and Systems Engineering UNED Dep. of Computer Sciences and Automatic Control UNED Dep. of Informatics ceiA3 CIESOL University of Almería

In this paper, feedforward and feedback controllers are studied considering decoupled periodic event-triggering mechanisms for output and disturbance sensors. Stability and robustness conditions for linear systems are obtained considering transportation delays and actuator saturation following the Lyapunov-Krasovskii procedure. A numerical example shows that the proposed control strategy reduces the communication between sensors and controller significantly, while the system performance is not deteriorated.

关键词： Event-triggered control feedforward control Lyapunov stability time delay disturbance rejection saturation

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Reducing reconfiguration time of reconfigurable computing systems in integrated temporal partitioning and physical design framework 20

Reducing reconfiguration time of reconfigurable computing sy...

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20th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2006

作者： Mehdipour, Farhad Zamani, Morteza Saheb Ahmadifar, Hamid Reza Sedighi, Mehdi Murakami, Kazuaki Amirkabir University of Technology IT and Computer Engineering Department #424 Hafez Ave. Tehran Iran Kyushu University Dep. of Informatics Graduate School of Information Science and Electrical Engineering Fukuoka Japan Guilan University Engineering Faculty Rasht Iran

ISBN: (纸本)1424400546

In reconfigurable systems, reconfiguration latency is a very important factor impact the system performance. In this paper, a framework is proposed that integrates the temporal partitioning and physical design phases to perform a static compilation process for reconfigurable computing systems. A temporal partitioning algorithm is proposed which attempts to decrease the time of reconfiguration on a partially reconfigurable hardware, This algorithm attempts to find similar single or pair of operations between subsequent partitions. Considering similar pairs instead of single nodes brings about less complexity for routing process. By using this technique, smaller reconfiguration bit-stream is obtained, which directly decreases the reconfiguration overhead time at the run-time. A complementary algorithm attempts to increase the similarity of subsequent partitions by searching for similar pairs and using a technique called dummy node insertion, An incremental physical design process based on similar configurations produced in the partitioning stage improves the metrics over iterations. © 2006 IEEE.

关键词： computer systems

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Mining and estimating users' opinion strength in forum texts regarding governmental decisions

Mining and estimating users' opinion strength in forum texts...

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8th International Workshop on Artificial Intelligence Applications and Innovations, AIAI 2012: AIAB, AIeIA, CISE, COPA, IIVC, ISQL, MHDW, and WADTMB

作者： Stylios, George Tsolis, Dimitrios Christodoulakis, Dimitrios Technical Educational Institute of Ionian Islands Dept. of Applications of Information Technology in Administration and Economy 3100 Lefkas Greece University of Patras Computer Engineering and Informatics Dep. 26504 Patras Greece

ISBN: (纸本)9783642334115

Web 2.0 has facilitated interactive information sharing on the WWW, allowing users the opportunity to articulate their opinions on different topics. In this framework, certain practices implement information monitoring systems so as digests, reports on keywords and thematic queries regarding opinions on government decisions to be created. Analysis of rubrics associations, primary semantic and statistical interpretation of the texts is usually carried out. It is, on the other hand, rather difficult to get punctual predicts and estimate sufficiently forum users' opinion strength. In this work we present a methodology which automatically mines and estimates the strength of users' opinions on text forums regarding government decisions. According to our methodology, quantitative features are automatically mined from forum posts and then passed to a Support Vector Machine based classifier where the users' opinion strength is estimated. The proposed methodology has been validated in real data and initial experimental results are presented. © 2012 IFIP International Federation for Information Processing.

关键词： Sentiment analysis

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Fistula Condition Monitoring System by the Noise Changes Dynamics

Fistula Condition Monitoring System by the Noise Changes Dyn...

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2023 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2023

作者： Yumagulov, N.I. Fedorov, D.A. Topolsky, D.V. Nizhnevartovsk State University Dep. for Education in Physics and Mathematics Nizhnevartovsk Russia Surgut State University Department of Informatics and Computer Engineering Surgut Russia Department of Electronic Computing Machines Chelyabinsk Russia

ISBN: (纸本)9781665475952

The paper presents an automated system for collecting and processing data for diagnosing the condition of an arteriovenous fistula. In the fistula, due to increased blood flow, characteristic noises and vibrations of the vessel walls occur. Using the data acquisition device, the acoustic noise of the arteriovenous fistula is recorded. The system processes and analyzes the measured data, evaluates the main indicators of the fistula condition. Changing the main indicators allows you to evaluate the dynamics of changes in the fistula condition. The developed system can be used for remote, long-term and continuous diagnostics of blood vessels in patients on hemodialysis. © 2023 IEEE.

关键词： Dynamics

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The Impact of FEC on Mobile Multicast Power Control

The Impact of FEC on Mobile Multicast Power Control

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Advanced International Conference on Telecommunications (AICT)

作者： Antonios Alexiou Christos Bouras Andreas Papazois Computer Engineering and Informatics Department University of Patras Patras Greece Computer Engineering and Informatics Dep University of Patras Patras Greece Research Academic Computer Technology Institute Patras Greece

ISBN: (纸本)9781424467488;9780769540214

3GPP has standardized the use of forward error correction for the provision of reliable data transmission in the mobile multicast framework. In this paper we present a study of the impact of application layer forward error correction on power control during mobile multicast transmission. The evaluation is performed with the aid of a novel scheme that allows the simulation of FEC impact on both streaming delivery and download delivery over a multicast session. It is important that the proposed scheme incorporates the properties of an evolved mobile network, as they are determined by the 3GPP specifications.

关键词： Power control Forward error correction Streaming media Power engineering computing Telecommunication computing Data communication Radio access networks Energy consumption Power engineering and energy informatics

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A Load Balancing Algorithm for Resource Allocation in IEEE 802.15.4e Networks

A Load Balancing Algorithm for Resource Allocation in IEEE 8...

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2018 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2018

作者： Kralevska, Katina Dimitrios Vergados, J. Jiang, Yuming Michalas, Angelos Dep. of Information Security and Communication Technology NTNU Norwegian University of Science and Technology Norway School of Electrical and Computer Engineering National Technical University of Athens Greece Department of Informatics Engineering Technological Education Institute of Western Macedonia Kastoria Greece

ISBN: (纸本)9781538632277

The recently created IETF 6TiSCH working group combines the high reliability and low-energy consumption of IEEE 802. 15.4e Time Slotted Channel Hopping with IPv6 for industrial Internet of Things. We propose a distributed link scheduling algorithm, called Local Voting, for 6TiSCH networks that adapts the schedule to the network conditions. The algorithm tries to equalize the link load (defined as the ratio of the queue length over the number of allocated cells) through cell reallocation. Local Voting calculates the number of cells to be added or released by the 6TiSCH Operation Sublayer 6top. Compared to a representative algorithm from the literature, Local Voting provides simultaneously high reliability and low end-to-end latency while consuming significantly less energy. Its performance has been examined and compared to On-the- fly algorithm in 6TiSCH simulator by modeling an industrial environment with 50 sensors. © 2018 IEEE.

关键词： Resource allocation

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Inferring the differential student model in a probabilistic domain using abduction Inference in Bayesian Networks

Inferring the differential student model in a probabilistic ...

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3rd International Conference on Educational Data Mining, EDM 2010

作者： Khodeir, Nabila Wanas, Nayer Darwish, Nevin Hegazy, Nadia Informatics Dep. Electronics Research Institute Tahrir St. Giza Egypt Cairo Microsoft Innovation Lab 306 Chorniche El-Nile Maadi Cairo Egypt Dept. of Computer Engineering Faculty of Engineering Cairo University Giza Egypt

ISBN: (纸本)9780615375298

In this paper we aim to estimate the differential student knowledge model in a probabilistic domain within an intelligent tutoring system. The suggested algorithm aims to estimate the actual student model through the student answers to questions requiring diagnosing skills. Updating and verification of the model are conducted based on the matching between the student and model answers. Two different approaches to updating namely coarse and refined model are suggested. Results suggest that the refined model, although takes more computational resources, provides a slightly better approximation of the student model.

关键词： Students

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An Efficient Localization for Indoor Environment using Classification Algorithms

An Efficient Localization for Indoor Environment using Class...

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2020 International Conference on Computational Science and Computational Intelligence, CSCI 2020

作者： Mulahuwaish, Aos Towne, Wyatt Ghafoor, Kayhan Zrar Maghdid, Halgurd S. Saginaw Valley State University Dept. of Computer Science and Information Systems Michigan United States Salahaddin University-Erbil Dep. of Software Engineering and Informatics Iraq Koya University Faculty of Engineering Dept. of Software Engineering Kurdistan Region-F.R. Iraq

ISBN: (纸本)9781728176246

The positioning accuracy of various kinds of devices is often calculated by using Wi-Fi fingerprints as a data source of Received Signal Strength (RSS). Through different matching algorithms, these RSS values are related to corresponding positioning coordinates for positioning estimation. In this paper, we compare two well known Machine Learning (ML) structures for calculating positioning accuracy: Recurrent Neural Network-Long Short-Term Memory (RNN-LSTM) and a Decision Tree (DT). Both matching algorithms run through a series of datasets in two parts. In the first part, the datasets contain raw, non-normalized RSS values. In the second part, the RSS values are all normalized to remove noise in the datasets. After extensive testing and simulations, the tests showed that as long as RSS values are first normalized, a Decision Tree offers better average positioning accuracy. © 2020 IEEE.

关键词： Decision trees

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Calligraphic interfaces: Mixed metaphors for design

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10th International Workshop on Design, Specification, and Verification of Interactive Systems, DSV-IS 2003

作者： Pereira, João P. Jorge, Joaquim A. Branco, Vasco A. Nunes Ferreira, F. Dep. of Informatics Engineering ISEP/INESC-Porto R. S. Tomé Porto Portugal Computer Science Department IST/UTL Av. Rovisco Pais Lisboa Portugal Communication and Arts Department Univ. of Aveiro Aveiro Portugal Dep. of Electrical and Computer Engineering FEUP R. dos Bragas Porto Portugal

ISBN: (纸本)3540201599

CAD systems have yet to become usable at the early stages of product ideation, where precise shape definitions and sometimes even design intentions are not fully developed. To overcome these limitations, new approaches, which we call Calligraphic Interfaces, use sketching as the main organizing paradigm. Such applications rely on continuous input modalities rather than discrete interactions characteristic of WIMP interfaces. However, replacing direct manipulation by sketching alone poses very interesting challenges. While the temptation to follow the paper-and-pencil metaphor is great, free-hand sketch recognition remains an elusive goal. Further, using gestures to enter commands and sketches to draw shapes requires users to learn a command set. sketches do not enjoy the self-disclosing characteristics of menus. Moreover, the imprecise nature of interactions presents additional problems that are difficult to address using present-day techniques. In this paper we approach the three problems outlined above through a combination of different paradigms: First, a calligraphic sketching metaphor provides for a paper-like interaction. Second, dynamic menus. expectation lists. try to expose the state of the application without interfering with the task. Third, an incremental drawing paradigm allows precise drawings to be progressively constructed from sketches through simple constraint satisfaction. Finally, reducing instruction set and command usage allow for a simple and learnable approach in contrast with the complexity of present-day interactive systems. We present a system, GIDeS, which embodies these approaches. Usability testing carried so far yielded encouraging results to warrant further research. © Springer-Verlag Berlin Heidelberg 2003.

关键词： computer aided design

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A Generic Multi-Robot Coordination Strategic Layer 1

A Generic Multi-Robot Coordination Strategic Layer

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1st International Conference on Robot Communication and Coordination, RoboComm 2007

作者： Certo, João Lau, Nuno Reis, Luis P. IEETA Institute of Electronics and Telematics Engineering of Aveiro Portugal FEUP Faculty of Engineering The University of Porto Portugal DETI –Informatics Electronics and Telecommunications Dep. University of Aveiro Portugal LIACC – Artificial Intelligence and Computer Science Lab. Univ. Porto Portugal

ISBN: (纸本)9789639799080

Managing a team of heterogeneous robots in a dynamic environment poses a challenging job. In this paper a model for a multi-purpose, real-time, adaptable, strategical coordination layer is presented. Based on previous work developed for the RoboCup Soccer simulation, small-size, middle-size and legged leagues, a generic coordination model was built. As both centralized and distributed environment are handled by the layer, communication was an important factor to consider only introducing a minor overhead. A multi-level hierarchical approach was followed with hybrid methods used to switch between concepts. The model was tested with two strategy instances, RoboCup Rescue Simulation and RoboCup Soccer. Strategies are designed with the help of a graphical tool. Results achieved by the team in RoboCup Rescue and Soccer Simulation competitions demonstrate the usefulness of this approach. Copyright © 2011-2012 ICST

关键词： Sports

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