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Society of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2015

作者： Georgiou, E.P. Leuven, K.U. Drees, D. Dosta, S. Matteazzi, P. Kusinski, J. Celis, J.-P. B-3001 Leuven Belgium - Falex Tribology NV Kasteelpark Arenberg 44Wingepark 23B Rotselaar Belgium Falex Tribology NV Rotselaar Belgium Dpt. Ciencia dels Materials i Enginyeria Metal.lurgica Universitat de Barcelona Marti I Franques 1 Barcelona Spain Italy Faculty of Metal Engineering and Industrial Computer Science University of Mining and Metallurgy Mickiewicza 30 Ave. Cracow Poland

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Analysis of RATAN-600 radio telescope antenna using the MLPO algorithm

Analysis of RATAN-600 radio telescope antenna using the MLPO...

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作者： Letrou, C. Parrot, C. Baruh, A. Khaikin, V. Lebedev, M. Boag, A. Institut Telecom TELECOM SudParis 9 Rue Charles Fourier 91011 Evry Cedex France School of Electrical Engineering Tel Aviv University Tel Aviv 69978 Israel Special Astrophysical Observatory RAS Russia CNRS Lab. SAMOVAR 9 Rue Charles Fourier 91011 Evry Cedex France Computer Science Dpt. 9 Rue Charles Fourier 91011 Evry Cedex France

A fast and adaptive near-field physical optics algorithm is developed for the analysis of general multi-reflector antenna systems. The algorithm is applied to the radiation pattern computation of an extremely large an... 详细信息

ISBN: (纸本)9788882020743

关键词： Millimeter waves

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Performance analysis of pools in soft real-time design architectures

Performance analysis of pools in soft real-time design archi...

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International Symposium on Modeling, Analysis and Simulation of computer and Telecommunication systems (MASCOTS)

作者： C. Juiz R. Puigjaner H. Perros Dpt. Ciències Matemàtiques i informàticaEscola Politècnica Superior Universitat de les Illes Balears Palma Spain Computer Science Department College of Engineering North Carolina State University Raleigh NC USA

Architectures for the design of soft real-time systems typically do not facilitate the use of performance tools that will enable a designer to analyse the performance of the system that is being designed. Intercommunication data areas, whose behaviours are characterised by interaction protocols, are the building blocks of many soft real-time systems. The interaction protocols are grouped into families depending on their reading/writing functionality. We present two members belonging to the pool family. These components transfer data among tasks without synchronisation in a non-selective manner. In the basic pool model no task has priority over other tasks whereas in the priority pool model writer tasks have non-preemptive priority over reader tasks. Both queueing models are analysed approximately using a decomposition technique. Basic pool modelling is based on single-server and multi-server semaphore queues. Priority pool modelling is inspired on non-preemptive priority classical analysis.

关键词： Performance analysis Real time systems Protocols Design methodology Software systems Software design computer science Educational institutions USA Councils Timing

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A Field Study of an Extinguishing Material for use in Forest and Wildland-Urban Interface Fires

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Journal of engineering science and Technology Review 2024年第1期17卷 116-121页

作者： Chalaris, Michail Iliopoulos, Nikolaos Pallikarakis, Christos Kolaitis, Dionysios Hephaestus Laboratory Dpt. of Chemistry School of Science International Hellenic University Ag. Loukas Kavala65404 Greece Laboratory of Heterogeneous Mixtures and Combustion Systems School of Mechanical Engineering National Technical University of Athens Heroon Polytechniou St. 9 Zografou Athens15772 Greece

The fire extinguishing performance, in a simulation with field experiment of wildland fire, of liquid BONPET and pure water was studied. The results show that 6% BONPET liquid has better performance than pure water. The fire extinguishing simulation shows that the extinguishing performance of liquid BONPET 6% reduces the temperature at the burning area more quickly, showing a better cooling effect than water. Furthermore, shows that achieved 80% water saving and 60% faster extinguishing with the use of 6% BONPET liquid. Moreover, it has been observed that the utilization of BONPET liquid for fire suppression leads to reduced collateral damage. This is attributed to the unique properties of BONPET liquid, as its non-decomposed components persist on the surface following extinguishment. These residual components possess the capability to disintegrate and facilitate surface cooling in the event of a minor temperature rise. © 2024 School of science, IHU. All rights reserved.

关键词： Fires

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External localization system for mobile robotics

External localization system for mobile robotics

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International Conference on Advanced Robotics (ICAR)

作者： Tomáš Krajník Matías Nitsche Jan Faigl Tom Duckett Marta Mejail Libor Přeučil University of Lincoln Lincoln Lincolnshire GB Lab. of Robotics and Emb. Systems Univ. of Buenos Aires Argentina Dpt. of Computer Science and Engineering FEE Czech Technical Univ. in Prague Lincoln Centre for Autonomous Systems Univ. of Lincoln United Kingdom Intelligent and Mobile Robotics Group FEE Czech Technical Univ. in Prague

We present a fast and precise vision-based software intended for multiple robot localization. The core component of the proposed localization system is an efficient method for black and white circular pattern detection. The method is robust to variable lighting conditions, achieves sub-pixel precision, and its computational complexity is independent of the processed image size. With off-the-shelf computational equipment and low-cost camera, its core algorithm is able to process hundreds of images per second while tracking hundreds of objects with millimeter precision. We propose a mathematical model of the method that allows to calculate its precision, area of coverage, and processing speed from the camera's intrinsic parameters and hardware's processing capacity. The correctness of the presented model and performance of the algorithm in real-world conditions are verified in several experiments. Apart from the method description, we also publish its source code; so, it can be used as an enabling technology for various mobile robotics problems.

关键词： Cameras Three-dimensional displays Robots Mathematical model Estimation Equations Detectors

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Robust Voltage Control in DC Networks with Uncertain Nonlinear Load Dynamics

Robust Voltage Control in DC Networks with Uncertain Nonline...

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IEEE Conference on Decision and Control

作者： Amirreza Silani Giacomo Casadei Michele Cucuzzella Jan C. Wilems Center for Systems and Control ENTEG Faculty of Science and Engineering University of Groningen AG Groningen The Netherlands Control & Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran Iran Laboratoire Ampere Dpt. EEA of the Ecole Centrale de Lyon Université de Lyon Ecully France Department of Electrical Computer and Biomedical Engineering University of Pavia Pavia Italy

ISBN: (数字)9781665467612

ISBN: (纸本)9781665467629

In this letter, we propose a control scheme for regulating the voltage in Direct Current (DC) power networks. In contrast with other works in the literature where the loads are assumed to be constant, we consider uncertain time-varying loads described as the outputs of nonlinear dynamical exosystems with uncertain parameters. Based on the output regulation methodology, the proposed control scheme ensures the robust stability of the overall network and achieves voltage regulation in presence of impedance (Z), current (I), and power (P) loads. The simulation results illustrate excellent performance of the proposed control scheme.

关键词： Robust stability Simulation Regulation Impedance Voltage control

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Patient-specific models from inter-patient biological models and clinical records 14

Patient-specific models from inter-patient biological models...

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Formal Methods in computer Aided Design (FMCAD)

作者： E. Tronci T. Mancini I. Salvo S. Sinisi F. Mari I. Melatti A. Massini F. Davì T. Dierkes R. Ehrig S. Röblitz B. Leeners T.H.C. Krüger M. Egli F Ille Computer Science Department Sapienza University of Rome Computational Systems Biology Group Zuse Institute Berlin Division of Reproductive Endocrinology University Hospital Zurich Dpt. of Psychiatry Social Psychiatry and Psychotherapy Hannover Medical School CC Aerospace Biomedical Science & Tech. Luzern Univ. of Appl. Sciences & Arts

ISBN: (纸本)9780983567844

One of the main goals of systems biology models in a health-care context is to individualise models in order to compute patient-specific predictions for the time evolution of species (e.g., hormones) concentrations. In this paper we present a statistical model checking based approach that, given an inter-patient model and a few clinical measurements, computes a value for the model parameter vector (model individualisation) that, with high confidence, is a global minimum for the function evaluating the mismatch between the model predictions and the available measurements. We evaluate effectiveness of the proposed approach by presenting experimental results on using the GynCycle model (describing the feedback mechanisms regulating a number of reproductive hormones) to compute patient-specific predictions for the time evolution of blood concentrations of E2 (Estradiol), P4 (Progesterone), FSH (Follicle-Stimulating Hormone) and LH (Luteinizing Hormone) after a certain number of clinical measurements.

关键词： Computational modeling Biological system modeling Barium Predictive models Evolution (biology) Biochemistry

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The MPEG-7 query format: a new standard in progress for multimedia query by content

The MPEG-7 query format: a new standard in progress for mult...

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International Symposium on Communications and Information Technologies (ISCIT)

作者： Kevin Adistambha Mario Doeller Ruben Tous Matthias Gruhne Masanori Sano Chrisa Tsinaraki Stavros Christodoulakis Kyoungro Yoon Christian H. Ritz Ian S. Burnett School of Electrical Computer and Telecommunications Engineering University of Wollongong Australia Department Distributed Information Technology University of Passau Passau Germany Dpt. d'Arquitectura de Computadors Universitat Poliltècnica de Catalunya Barcelona Spain Department Metadata Fraunhofer IDMT Germany NHK Science and Technology Research Laboratories Japan Laboratory of Distributed Multimedia Information Systems & Applications Technical University of Crete Greece School of Computer Science and Engineering Konkuk University Seoul South Korea

In recent years, the amount of Internet accessible digital audiovisual media files has vastly increased. Therefore the need to describe the media (by way of metadata) has also increased significantly. MPEG-7 (finalized in 2001) provides a comprehensive and rich metadata standard for the description of multimedia content. Unfortunately, a standardized query format does not exist for MPEG-7, or other multimedia metadata. Such a standard would provide for communications between querying clients and databases, supporting cross-modal and cross-media retrieval. The lSO/lEC SC29WG11 committee decided therefore to contribute to this application space by adding such functionality as a new part of the MPEG-7 series of standards. In response to a Call for Proposals, six proposals were submitted. This paper describes the strengths of each proposal as well as the resulting draft standard for the MPEG-7 query format.

关键词： MPEG 7 Standard Multimedia databases Electronic mail Proposals Database languages Multimedia systems Telecommunication computing Identity-based encryption ISO IEC

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Using conceptors to manage neural long-term memories for temporal patterns

The Journal of Machine Learning Research

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The Journal of Machine Learning Research 2017年第1期18卷

作者： Herbert Jaeger Dpt. of Computer Science and Electrical Engineering Jacobs University Bremen Bremen Germany

Biological brains can learn, recognize, organize, and re-generate large repertoires of temporal patterns. Here I propose a mechanism of neurodynamical pattern learning and representation, called conceptors, which offers an integrated account of a number of such phenomena and functionalities. It becomes possible to store a large number of temporal patterns in a single recurrent neural network. In the recall process, stored patterns can be morphed and "focussed". Parametric families of patterns can be learnt from a very small number of examples. Stored temporal patterns can be content-addressed in ways that are analog to recalling static patterns in Hopfield networks.

关键词： neural dynamics neural long-term memory recurrent neural network temporal pattern learning

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On deploying the artificial sport trainer into practice

arXiv

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arXiv 2021年

作者： Fister, Iztok Iglesias, Andres Deb, Suash Fister, Iztok Galvez, Akemi Fister, Dušan Faculty of Electrical Engineering and Computer Science University of Maribor SI- Maribor2000 Slovenia Dpt. of Applied Mathematics and Computational Sciences University of Cantabria Santander39005 Spain IT & educational Consultant Ranchi Jharkhand India Faculty of Economics and Business University of Maribor MariborSI-2000 Slovenia

—Computational Intelligence methods for automatic generation of sport training plans in individual sport disciplines have achieved a mature phase. In order to confirm their added value, they have been deployed into practice. As a result, several methods have been developed for generating well formulated training plans on computers automatically that, typically, depend on the collection of past sport activities. However, monitoring the realization of the performed training sessions still represents a bottleneck in automating the process of sport training as a whole. The objective of this paper is to present a new low-cost and efficient embedded device for monitoring the realization of sport training sessions that is dedicated to monitor cycling training sessions. We designed and developed a new bike computer, i.e. the AST-Monitor, that can be mounted easily on almost every bicycle. The aforementioned bike computer is based on the Raspberry Pi device that supports different external sensors for capturing the data during the realization of sport training sessions. An adjusted GUI tailored to the needs of athletes is developed, along with the hardware. The proof of concept study, using the AST-Monitor in practice, revealed the potential of the proposed solution for monitoring of realized sport training sessions automatically. The new device also opens the door for the future utilization of Artificial Intelligence in a wide variety of sports. Copyright © 2021, The Authors. All rights reserved.

关键词： Sports

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