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IEEE Computational Intelligence Magazine 2012年第4期7卷 13-14页

作者： Derong Liu Chin-Teng Lin Garry Greenwood Simon Lucas Zhengyou Zhang Dept of Electrical and Computer Engineering University of Illinois at Chicago Chicago IL 60607 USA CS/ECE Departments National Chiao-Tung University Hsinchu 300 TAIWAN Department of Electrical and Computer Eng Portland State University Portland OR 97207 USA Department of Computing and Electronics Systems University of Essex UK Colchester CO4 3SQ UK Microsoft Research Redmond WA 98052 USA

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A cyclic small-gain condition and an equivalent matrix-like criterion for iISS networks

A cyclic small-gain condition and an equivalent matrix-like ...

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IEEE Conference on Decision and Control

作者： Hiroshi Ito Zhong-Ping Jiang Sergey N. Dashkovskiy Björn S. Rüffer Department of Systems Design and Informatics Kyushu Institute of Technology Iizuka Japan Department of Electrical and Computer Engineering Six Metrotech Center Polytechnic Institute of New York University Brooklyn NY USA Department of Civil Engineering University of Applied Sciences Erfurt Germany Signal and System Theory Group EIM-E University of Paderborn Paderborn Germany

ISBN: (纸本)9781467320658

This paper considers nonlinear dynamical networks consisting of individually iISS (integral input-to-state stable) subsystems which are not necessarily ISS (input-to-state stable). Stability criteria for internal and external stability of the networks are developed in view of both necessity and sufficiency. For the sufficiency, we show how we can construct a Lyapunov function of the network explicitly under the assumption that a cyclic small-gain condition is satisfied. The cyclic small-gain condition is shown to be equivalent to a matrix-like condition. The two conditions and their equivalence precisely generalize some central ISS results in the literature. Moreover, the necessity of the matrix-like condition is established. The allowable number of non-ISS subsystems for stability of the network is discussed through several necessity conditions.

关键词： Lyapunov methods Stability criteria Vectors Educational institutions Nickel USA Councils Indium tin oxide

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QoS-aware routing based on capacity estimation for mobile ad hoc networks

QoS-aware routing based on capacity estimation for mobile ad...

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Wireless Advanced

作者： Zafar, Haseeb Mahmud, Sahibzada Harle, David Andonovic, Ivan Departments of Computer Systems and Electrical Engineering University of Engineering and Technology Peshawar Pakistan Department of Electronic and Electrical Engineering University of Strathclyde Glasgow United Kingdom

ISBN: (纸本)9781457701092

Mobile ad hoc networks (MANETs) are rapidly evolving and the notion of ad hoc networking has become one of the most challenging research areas of wireless communications. The rising popularity of real-time applications among end users in MANETs has stimulated a surge of research in routing and providing quality of service (QoS) support in such networks. Capacity estimation is a key component of any admission control scheme required to support QoS provision in MANETs. A number of schemes have been previously proposed to estimate residual capacity that is derived from window-based measurements of channel estimation. In this paper, a new capacity-constrained QoS-aware routing scheme is proposed. The novel part of this scheme is a simple additional mechanism to estimate residual capacity in IEEE 802.11-based ad hoc networks. The scheme proposes the use of a forgiveness factor to weight these previous measurements and, it is shown through simulation-based evaluation to provide improved utilizations estimation and better available capacity based admission control. © 2011 IEEE.

关键词： Quality of service

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designing robust asynchronous circuits based on FinFET technology

Designing robust asynchronous circuits based on FinFET techn...

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2011 14th Euromicro Conference on Digital System design: Architectures, Methods and Tools, DSD 2011

作者： Jafari, Fataneh Mosaffa, Mahdi Mohammadi, Siamak Dependable Systems Design Lab. School of Electrical and Computer Engineering University of Tehran Iran

ISBN: (纸本)9780769544946

Double-gate FinFETs have proved to be a promising alternative for deep sub-micron bulk CMOS. In this paper, we have investigated the feasibility of FinFET transistors in asynchronous design which has gained much attention for its advantages such as absence of clock distribution, process variation aware performance, and robustness. Excellent short-channel characteristic, low leakage power, threshold voltage control and the potential of designing area-efficient circuits are the motivation to employ FinFET transistor in asynchronous circuit design. We have designed three novel FinFET-based asynchronous static C-elements which differ in front gate and back gate connections. They are evaluated in terms of leakage and dynamic power, area, and delay characteristics and compared against bulk CMOS C-element in 32nm technology. With technology scaling, vulnerability of combinational logic to soft errors exponentially increases. In this paper we also examine these C-elements nodes sensitivity against soft errors and propose a robust logic. We show that our proposed robustness method increases robustness of the most sensitive node in Shorted gate (SG) and Low power (LP) C-elements 60 times. A dual rail Muller pipeline has been designed with each kind to evaluate our C-elements and compare them to bulk MOSFET pipeline. Compared to SG, simulation results show that Independent gate (IG) and LP modes are most efficient in area and leakage power respectively and in terms of robustness SG and LP modes show better robustness than IG mode." © 2011 IEEE.

关键词： FinFET

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Sensing Construction Work-related Musculoskeletal Disorders (WMSDs)

Sensing Construction Work-related Musculoskeletal Disorders ...

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28th International Symposium on Automation and Robotics in Construction, ISARC 2011

作者： Alwasel, Abdullatif Elrayes, Karim Abdel-Rahman, Eihab M. Haas, Carl Systems Design Engineering University of Waterloo Canada Electrical and Computer Engineering University of Waterloo Canada Civil and Environmental Engineering University of Waterloo Canada

Much of the developed world's construction workforce is increasing in average age, and yet construction workers typically retire well before they reach the age of sixty. One reason is that their bodies are worn out because of the nature of the work. We therefore face the challenge of both reducing their physical stress and increasing their productive work life, if we wish to avert an economic and social crunch given the demographic trends towards an aging population in most developed countries. In particular, recent statistics from the U.S Department of labor show that 6.9% of all Workrelated Musculoskeletal Disorders (WMSDs) among workers in 2008 affected shoulders;this percentage becomes much larger for electricians, carpenters, and related construction crafts. The cost to our industry and to society is huge, and it is unnecessary. Reduction of certain types of movements and improvements in posture can result in reduced rates of shoulder WMSDs and in extended work lives. This can be done with a combination of robotics, work re-design, and work monitoring. This paper provides the statistical background and economic analysis that supports the scope of the problem, presents background on the kinematics of shoulder movement, and explains the biomechanics and causes of shoulder injuries. Then, preliminary results are presented for a prototype of a simple, low-cost, sensing solution for automatically monitoring undesirable movements and patterns of motion. It is expected that this could be broadly implemented to help reduce Construction Work-related Musculoskeletal Disorders (WMSDs).

关键词： Ergonomics

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A novel hierarchical model-based frame rate up-conversion via spatio-temporal conditional random fields

A novel hierarchical model-based frame rate up-conversion vi...

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13th IEEE International Symposium on Multimedia, ISM 2011

作者： Shafiee, M.J. Azimifar, Z. Wong, A. Fieguth, P. School of Electrical and Computer Engineering Shiraz University Shiraz Iran Department of Systems Design Engineering University of Waterloo Waterloo ON Canada

ISBN: (纸本)9780769545899

In this paper, a hierarchical model-based approach to frame rate-up conversion is presented. Given a sequence of consecutive video frames, a Spatio-Temporal Conditional Random Field (ST-CRF) is trained to capture both the motion and shape characteristics of objects within consecutive frames. A hierarchical tree is then constructed via hierarchical segmentation that sub-divides frames into regions based on color intensity and regional velocity. A hierarchical sampling approach is then introduced to construct new intermediate frames between adjacent video frames, where estimated intermediate frames are constructed at each level of a hierarchical tree constructed such that the probability of the ST-CRF is maximized. Preliminary results using videos with different motion characteristics show that the proposed approach has potential for producing intermediate frames with high visual quality. © 2011 IEEE.

关键词： Forestry

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Architecture design: Building specialized domain ontologies using an intelligent model and topic model

Architecture design: Building specialized domain ontologies ...

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11th IASTED International Conference on Artificial Intelligence and Applications, AIA 2011

作者： Mooman, Abdelniser A. Basir, Otman Younes, Abdunnaser Department of Electrical and Computer Engineering University of Waterloo Waterloo ON Canada Department of Systems Design Engineering University of Waterloo Waterloo ON Canada

ISBN: (纸本)9780889868632

Current search engines and information retrieval(IR) systems enable users to access the vast amount of information available on the Internet. However, owing to the size and dynamic nature of the information resources, the end user must sift through a large amount of retrieved information in order to find the desired information. To alleviate this difficulty, we present a novel approach for mapping users to the relevant information, by constructing specialized domains in which the users have demonstrated interest. We use reinforcement learning and social tagging in the approach to assist end users to select the concept domains most relevant to their needs. Our approach involves enriching the user's query with related linguistic ontologies and statistical semantic-related concept terms. We employ the Natural Language Process (NLP) techniques to enrich the user's query with semantic, lexical, synonymous terms, and probabilistic topic models, such as Latent Dirichet Allocation (LDA), to extract highly ranked topics from a query's retrieved information.

关键词： Search engines

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Erratum to: Methods for evaluating medical tests and biomarkers

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Diagnostic and prognostic research 2017年第1期1卷 11页

作者： Gowri Gopalakrishna Miranda Langendam Rob Scholten Patrick Bossuyt Mariska Leeflang Anna Noel-Storr James Thomas Iain Marshall Byron Wallace Penny Whiting Clare Davenport Gowri GopalaKrishna Isabel de Salis Sue Mallett Robert Wolff Richard Riley Marie Westwood Jos Kleinen Gary Collins Hans Reitsma Karel Moons Antonia Zapf Annika Hoyer Katharina Kramer Oliver Kuss J Ensor J J Deeks E C Martin R D Riley Gerta Rücker Susanne Steinhauser Martin Schumacher Joie Ensor Kym Snell Brian Willis Thomas Debray Jon Deeks Lavinia Ferrante di Ruffano Sian Taylor-Phillips Chris Hyde Stuart A Taylor Gauraang Batnagar Lavinia Ferrante Di Ruffano Farah Seedat Aileen Clarke Sarah Byron Frances Nixon Rebecca Albrow Thomas Walker Carla Deakin Zhivko Zhelev Harriet Hunt Yaling Yang Lucy Abel James Buchanan Thomas Fanshawe Bethany Shinkins Laure Wynants Jan Verbakel Sabine Van Huffel Dirk Timmerman Ben Van Calster Aeliko Zwinderman Jason Oke Jack O'Sullivan Rafael Perera Brian Nicholson Hannah L Bromley Tracy E Roberts Adele Francis Denniis Petrie G Bruce Mann Kinga Malottki Holly Smith Lucinda Billingham Alice Sitch Oke Gerke Mie Holm-Vilstrup Eivind Antonsen Segtnan Ulrich Halekoh Poul Flemming Høilund-Carlsen Bernard G Francq Jac Dinnes Julie Parkes Walter Gregory Jenny Hewison Doug Altman William Rosenberg Peter Selby Julien Asselineau Paul Perez Aïssatou Paye Emilie Bessede Cécile Proust-Lima Christiana Naaktgeboren Joris de Groot Anne Rutjes Johannes Reitsma Emmanuel Ogundimu Jonathan Cook Yannick Le Manach Yvonne Vergouwe Romin Pajouheshnia Rolf Groenwold Karen Moons Linda Peelen Daan Nieboer Bavo De Cock Micael J Pencina Ewout W Steyerberg Jennifer Cooper Nick Parsons Chris Stinton Steve Smith Andy Dickens Rachel Jordan Alexandra Enocson David Fitzmaurice Peymane Adab Charles Boachie Gaj Vidmar Karoline Freeman Martin Connock Rachel Court Carl Moons Jessica Harris Andrew Mumford Zoe Plummer Kurtis Lee Barnaby Reeves Chris Rogers Veerle Verheyden Gianni D Angelini Gavin J Murphy Jeremy Huddy Melody Ni Katherine Good Graham Cooke 1Department of Clinical Epidemiology Biostatistics & Bioinformatics Academic Medical Center University of Amsterdam Amsterdam The Netherlands. 2Cochrane Netherlands Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht Netherlands. 234Department of Clinical Epidemiology Biostatistics & Bioinformatics Academic Medical Center University of Amsterdam Amsterdam The Netherlands. 49Department of Clinical Epidemiology Biostatistics & Bioinformatics Academic Medical Center University of Amsterdam Amsterdam The Netherlands. 3Cochrane Dementia and Cognitive Improvement Group University of Oxford Oxford UK. 4EPPI-Centre Department of Social Science University College London London UK. 5Division of Health and Social Care Research King's College London London UK. 6College of Computer and Information Science Northeastern University Boston USA. 13University Hospitals Bristol NHS Foundation Trust School of Social and Community Medicine Bristol UK. 275Institute of Applied Health Research University of Birmingham Birmingham UK. 9Department of Clinical Epidemiology Biostatistics & Bioinformatics Academic Medical Center University of Amsterdam Amsterdam The Netherlands. 10School of Social and Community Medicine University of Bristol Bristol UK. 179Institute of Applied Health Research University of Birmingham Birmingham UK. 12Kleijnen Systematic Reviews Ltd York UK. 25Research Institute for Primary Care and Health Sciences Keele University Keele UK. 188Centre for Statistics in Medicine Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK. 191Julius Center for Health Sciences and Primary Care University Medical Center Utrecht 3584 CG Utrecht Netherlands. 237Julius Center for Health Sciences and Primary Care University Medical Center Utrecht 3584 CG Utrecht Netherlands. 18Department of Medical Statistics University Medical Center Göttingen Göttingen Germany. 19Institute for B

[This corrects the article DOI: 10.1186/s41512-016-0001-y.].

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Active vibration control of a light and flexible stress ribbon footbridge using pneumatic muscles

Active vibration control of a light and flexible stress ribb...

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作者： Bleicher, A. Schauer, T. Valtin, M. Raisch, J. Schlaich, M. Conceptual and Structural Design Department of Civil and Structural Engineering Berlin Germany Control Systems Group Department of Electrical Engineering and Computer Science Berlin Germany

ISBN: (纸本)9783902661937

This paper describes the development of an active vibration control system for a light and flexible stress ribbon footbridge. The 13 m span Carbon Fiber Reinforced Plastics (CFRP) stress ribbon bridge was built in the laboratory of the Department of Civil and Structural engineering, Berlin Institute of Technology. Its lightness and flexibility result in high vibration sensitivity. To reduce pedestrianinduced vibrations, very light pneumatic muscle actuators are placed at handrail level introducing control forces. First, a reduced discretized analytical model is derived for the stress ribbon bridge. To verify the analytical prediction, experiments without feedback control are conducted. Based on this model, a velocity feedback control strategy is designed to actively control first mode vibrations. To handle the nonlinearities of the muscle actuator a subsidiary nonlinear force controller is implemented based on exact linearisation methods. The stability of the entire closed-loop system with actuator saturation is investigated by the Popov Criterion. Control performance is verified by experiments. It is demonstrated that handrail introduced forces can efficiently control the first mode response. © 2011 IFAC.

关键词： Closed loop systems

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Functional framework and hardware platform for dependability study in short range wireless embedded systems

Functional framework and hardware platform for dependability...

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2011 IEEE 17th International Mixed-Signals, Sensors and systems Test Workshop, IMS3TW 2011

作者： Senouci, B. Annema, A.J. Bentum, M.J. Kerkhoff, H.G. Integrated Circuit Design Group Electrical Engineering Mathematics and Computer Science Faculty University of Twente Enschede Netherlands Telecommunication Engineering Group Electrical Engineering Mathematics and Computer Science Faculty University of Twente Enschede Netherlands Computer Architecture for Embedded Systems Group Electrical Engineering Mathematics and Computer Science Faculty University of Twente Enschede Netherlands

ISBN: (纸本)9780769544793

A new direction in short-range wireless applications has appeared in the form of high-speed data communication devices for distances of a few meters. Behind these embedded applications, a complex Hardware/Software architecture is built. Dependability is one of the major challenges in these systems. Obviously in such systems, the attribute reliability has to be investigated for various components and at different abstractions levels. This paper presents a hardware platform for wireless system dependability analysis as an alternative for the time consuming global system simulation technique. The platform is built using several instances of one of the commercial FPGA platforms available on the market place. Based on this platform we introduce a new methodology and a flow to investigate the different parts of system dependability at different abstraction levels. The benefits to use the proposed methodology are two fold: first it takes care of the whole system (HW/SW part, mixed RF and wireless part) and second, the hardware platform enables to explore the application's reliability under real environmental conditions in order to study the effect of the environment threats on the system. © 2011 IEEE.

关键词： Abstracting

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