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IEEE Electric Ship Technologies Symposium, ESTS

作者： P. Prempraneerach M. G. Angle J. L. Kirtley G. E. Karniadakis C. Chryssostomidis Mechanical Engineering Department Rajamangala University of Technology Thunyaburi Pathumthani Thailand Electrical Engineering and Computer Science Department Research Laboratory for Electronics MIT Cambridge MA USA Division of Applied Mathematics Brown University Providence RI USA Department of Mechanical Engineering MIT MIT Sea Grant College Program Cambridge MA USA

DC faults may cause severe disruptions in continuity of service to vital loads in a shipboard integrated power system, hence detection, isolation, and protection against such faults must be incorporated in both medium-voltage DC (MVDC) and low-voltage DC (LVDC) systems. Here we consider the effectiveness of existing z-source breakers and propose several new designs more appropriate for fault detection in MVDC and LVDC systems. In particular, we perform an optimization study that aims to minimize dissipation and weight and we identify the key parameters for use in MVDC and LVDC systems. Preliminary verification and validation studies are also included.

关键词： Circuit faults Thyristors Switches Circuit breakers Capacitors Fault currents Optimization

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Toward an objective aerodynamic assessment of vocal hyperfunction using a voice health monitor 8

Toward an objective aerodynamic assessment of vocal hyperfun...

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8th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications, MAVEBA 2013

作者： Zañartu, Matías Espinoza, Víctor Mehta, Daryush D. Van Stan, Jarrad H. Cheyne, Harold A. Ghassemi, Marzyeh Guttag, John V. Hillman, Robert E. Department of Electronic Engineering Universidad Técnica Federico Santa María Valparaíso Chile Center for Laryngeal Surgery and Voice Rehabilitation Massachusetts General Hospital Harvard Medical School BostonMA United States Bioacoustics Research Program Laboratory of Ornithology Cornell University IthacaNY United States Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology CambridgeMA United States

ISBN: (纸本)9788866554691

Vocal hyperfunction is a description of abnormal patterns of vocal behavior that may lead to many common voice disorders. Previous studies demonstrated that disorders associated with hyperfunction could be detected in patients by measuring aerodynamic and acoustic parameters from recordings of a single sustained vowel using a Rothenberg mask setup. Although ambulatory systems have shown the best potential for unobtrusive long-term monitoring of vocal function, their ability to differentiate hyperfunctional from normal patterns of vocal behavior has not been assessed. This study provides an initial quantitative evaluation of the capabilities of a neck surface acceleration signal to objectively detect abnormal vocal behaviors associated with hyperfunctionally-related disorders. The goal is to verify if such detection is possible using a neck accelerometer signal rather than an airflow mask and incorporate vocal gestures from multiple vowels and running speech. An impedance-based inverse filtering algorithm is used to estimate aerodynamic parameters from the neck-surface acceleration signal. The results obtained when contrasting five patients with vocal nodules to five paired normal subjects indicate that the accelerometer-based assessment offers comparable discrimination capabilities as those from the aerodynamic recordings. The results also provide a first indication that this discrimination is possible with an expanded sample that includes other sustained vowels and running speech. © 2013 Firenze University Press.

关键词： Accelerometers

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Sensors: Stretchable, Multiplexed pH Sensors With Demonstrations on Rabbit and Human Hearts Undergoing Ischemia (Adv. Healthcare Mater. 1/2014)

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Advanced Healthcare Materials 2014年第1期3卷

作者： Hyun‐Joong Chung Matthew S. Sulkin Jong‐Seon Kim Camille Goudeseune Hsin‐Yun Chao Joseph W. Song Sang Yoon Yang Yung‐Yu Hsu Roozbeh Ghaffari Igor R. Efimov John A. Rogers Department of Chemical and Materials Engineering University of Alberta Edmonton AB T6G 2V4 Canada Department of Materials Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA Department of Biomedical Engineering Washington University in Saint Louis Saint Louis MO USA Department of Chemical and Biomolecular Engineering (BK21 Program) Korea Advanced Institute of Science and Technology Daejeon Korea Illinois Simulator Laboratory Beckman Institute University of Illinois Urbana IL 61801 USA MC10 Inc. 36 Cameron Avenue Cambridge MA 02140 USA Department of Materials Science and Engineering Chemistry Mechanical Science and Engineering Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana‐Champaign Urbana IL 61801 USA

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Incorporating real-time biofeedback capabilities into a voice health monitor 8

Incorporating real-time biofeedback capabilities into a voic...

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8th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications, MAVEBA 2013

作者： Llico, Andrés F. Zañartu, Matías Mehta, Daryush D. Van Stan, Jarrad H. Cheyne, Harold A. González, Agustín J. Ghassemi, Marzyeh Wodicka, George R. Guttag, John V. Hillman, Robert E. Department of Electronic Engineering Universidad Técnica Federico Santa María Valparaíso Chile Center for Laryngeal Surgery and Voice Rehabilitation Massachusetts General Hospital Harvard Medical School BostonMA United States Bioacoustics Research Program Laboratory of Ornithology Cornell University IthacaNY United States Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology CambridgeMA United States Weldon School of Biomedical Engineering Purdue University West LafayetteIN United States

ISBN: (纸本)9788866554691

Many common voice disorders are chronic or recurring conditions that result from abusive and/or faulty patterns of vocal behavior referred to as vocal hyperfunction. Thus, an ongoing goal is the development of long-term ambulatory monitoring for clinical assessment, prevention and modification of hyperfunctional patterns of vocal behavior. This paper reports our initial efforts toward real-time behavioral biofeedback using the smartphone-based Voice Health Monitor that records the highbandwidth acceleration from the neck skin above the sternal notch. By incorporating real-time estimation of fundamental frequency and sound pressure level, the monitor can provide various types of biofeedback to the user through a vibrotactile alert. The performance of the monitor is compared with that of the commercially available Ambulatory Phonation Monitor (APM) using a bioacoustic transducer tester that generates repeatable vibratory stimuli recorded from ahuman subject. Ambulatory features computed include phonation time, fundamental frequency, sound pressure level, and compliance to a specified threshold level. The results support the implementation of biofeedback in the smartphonebased system and illustrate that the new platform's technology performs more reliably than the APM. Future work calls for the exploration of more sophisticated algorithms to measure vocal behavior and provide clinically meaningful biofeedback. © 2013 Firenze University Press.

关键词： Speech

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Poster abstracts

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Sleep and Biological Rhythms 2016年第1期5卷 A1-A189页

作者： J. Ferrie M. Shipley F. Cappuccio E. Brunner M. Miller M. Kumari M. Marmot A. Coenen J. L. Castillo F. Araya G. Bustamante L. Montecino C. Torres S. Oporto J. Gronli E. Fiske R. Murison B. Bjorvatn E. Sorensen R. Ursin C. M. Portas S. Rajaraman A. Gribok N. Wesensten T. Balkin J. Reifman N. Dursunoglu S. Ozkurt S. Baser O. Delen S. Sarikaya P. Sadler P. Mitchell D. Françon M. Decobert B. Herve A. Richard G. Griebel P. Avenet B. Scatton G. L. Fur D. Eckert A. Jordan A. Wellman S. Smith A. Malhotra D. White D. Bruck I. Thomas A. Kritikos W. Oertel K. Stiasny-Kolster D. Garcia-Borreguero W. Poewe B. Hoegl R. Kohnen E. Schollmayer J. Keffel C. Trenkwalder A. Valle S. Roizenblatt F. Fregni P. Boggio S. Tufik K. Ward L. Robertson L. Palmer P. Eastwood D. Hillman J. Lee S. Mukherjee V. de Padova G. Barbato G. Ficca I. Zilli P. Salzarulo M. Veldi T. Hion V. Vasar M. Kull L. Nowak J. Davis Y. Latzer O. Tzischinsky S. Crowley M. Carskadon M. Anca-Herschkovitsch D. Frey J. Ortega C. Wiseman C. Farley K. Wright A. Campbell A. Neill K. Spiegel R. Leproult E. Tasali N. Scherberg E. van Cauter A. T. Noradina N. A. Karim I. Norlinah A. A. Raymond R. Sahathevan B. Hamidon E. Werth R. Poryazova R. Khatami C. Bassetti R. G. Beran L. Ainley G. Holand J. Duncan H. Kinney B. Davis B. Hood S. Frey C. Schmidt M. Hofstetter P. Peigneux C. Cajochen W.-P. Hu J.-D. Li C. Zhang L. Boehmer J. Siegel Q.-Y. Zhou Y. Sagawa H. Kondo T. Takemura H. Kanayama Y. Kaneko M. Sato T. Kanbayashi Y. Hishikawa T. Shimizu A. Viola L. James L. Schlangen D.-J. Dijk R. Andretic Y.-C. Kim K.-A. Han F. Jones R. Greenspan L. Sanford L. Yang X. Tang K. Dieter E. Uta H. Sven M. Richard N. Oyane S. Pallesen F. Holsten Y. Inoue M. Fujita N. Emura K. Kuroda N. Uchimura A. Johnston J. Astbury G. Kennedy K. Hoedlmoser M. Schabus T. Pecherstorfer S. Moser G. Gruber P. Anderer W. Klimesch N. Naidoo M. Ferber A. Pack D. Neu O. Mairesse G. Hoffmann A. Dris L. Lambrecht P. Linkowski P. Verbanck O. Le Bon N. Matsuura M. Yamao N. Adachi R. Aritomi Y. Komada H. Tanaka S. Shirak University College London London UK University College London London USA Warwick Medical School London UK Warwick Medical School Coventry USA Radboud University Nijmegen Nijmegen Netherlands Department of Neurology University of Chile Santiago Chile Neurology Service Hospital del Salvador Santiago Chile Family Health Center Juan Pablo II Santiago Chile Department of Biomedicine Section on Physiology Univeristy of Bergen Bergen Norway Department of Public Health and Primary Health Care Univeristy of Bergen Bergen Norway Department of Public Health and Primary Health Care University of Bergen Bergen Norway Norwegian Competence Center for Sleep Disorders Haukeland University Hospital Bergen Norway Department of Child and Adolescent Psychiatry Haukeland University Hospital Univeristy of Bergen Bergen Norway Department of Biomedicine University of Bergen Bergen Norway US Army Medical Research and Materiel Command Fort Detrick Frederick USA Walter Reed Army Institute of Research Silver Spring USA Department of Behavioral Biology Walter Reed Army Institute of Research Silver Spring USA Faculty Department of Pulmonology Pamukkale University Medical Denizli Turkey University of Ballarat Ballarat Australia Sanofi-Aventis Recherche et Developpement Paris France Brigham and Women’s Hospital Harvard Medical School Boston USA The University of Queensland Adelaide Australia School of Psychology University of Queensland Brisbane Australia The University of Queensland Brisbane Australia Victoria University Melbourne Australia Department of Psychology Victoria University Melbourne Australia School of Psychology Victoria University Melbourne Australia Philips-Universität Marburg Germany Philips-Universitaet-Marburg Marburg Germany Instituto de Investigaciones del Sueno Madrid Spain Universitätsklinik für Neurologie Innsbruck Austria Universitaetsklinik fuer Neurologie Innsbruck Austria IMEREM GmbH Nuernberg Germany Schwarz Pharma AG Monheim Germany

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High-endurance solar-blind photodetectors using AlN on Si substrates for extreme harsh environment applications

High-endurance solar-blind photodetectors using AlN on Si su...

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Device Research Conference

作者： Dung-Sheng Tsai Wei-Cheng Lien Der-Hsien Lien Kuan-Ming Chen Meng-Lin Tsai Debbie G. Senesky Yueh-Chung Yu Albert P. Pisano Jr-Hau He Institute of Photonics and Optoelectronics National Taiwan University Taipei Taiwan Applied Science and Technology Program & Department of Electrical Engineering and Computer Science University of California Berkeley CA USA Institute of Physics Academia Sinica Taipei Taiwan Department of Aeronautics & Astronautics Stanford University Stanford CA USA Institute of Photonics and Optoelectronics Department of Electrical Engineering National Taiwan University Taipei Taiwan

In this paper, the metal-semiconductor-metal (MSM) Schottky AlN photodetectors (PDs) on Si substrates show a dark current as low as ~1 nA at a bias up to 200 V. Excellent thermal stability and radiation hardness of solar-blind AlN MSM PDs are achieved. The working temperature is up to 300 °C and the radiation tolerance is up to 10 13 cm -2 of 2 MeV proton fluences for AlN MSM PDs. The results demonstrate the high promise of AlN as an active material for solar-blind DUV photodetection in extremely harsh environments.

关键词： III-V semiconductor materials Temperature measurement Protons Radiation effects Substrates Dark current Semiconductor device measurement

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Frequency modulation using digital sinusoidal oscillator

Frequency modulation using digital sinusoidal oscillator

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2012 9th International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON 2012

作者： Punchalard, R. Nosan, A. Department of Telecommunication Engineering Mahanakorn University of Technology Bangkok Thailand Computer Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Thailand

ISBN: (纸本)9781467320245

This paper presents an alternative method to generate the digital frequency modulation (FM) signal. By summing an information signal m(k) with the oscillating frequency ω0 and putting the result into the cosine function of digital oscillator coefficient which is -2 cos (ω0 +m(k)), the FM signal is obtained. computer simulations are conducted to show the validity of the proposed FM signal generator. © 2012 IEEE.

关键词： Frequency modulation

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Absolute gradient algorithm for adaptive IIR notch filter

Absolute gradient algorithm for adaptive IIR notch filter

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2012 9th International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON 2012

作者： Nosan, A. Punchalard, R. Computer Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Bangkok Thailand Department of Telecommunication Engineering Mahanakorn University of Technology Bangkok Thailand

ISBN: (纸本)9781467320245

The gradient algorithm used absolute value of error signal as a criterion to adjust the filter coefficient of adaptive IIR notch filter is presented in this paper. The objective is to estimate or track the frequency of a single sinusoidal signal corrupted by additive white Gaussian noise. The proposed algorithm can solve the problem of selecting an initial condition as met in the previous method. Moreover, it also has a high convergence speed. © 2012 IEEE.

关键词： Notch filters

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Optical generation, templating, and polymerization of three-dimensional arrays of liquid-crystal defects decorated by plasmonic nanoparticles

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Physical Review E 2013年第3期87卷 032503-032503页

作者： Julian S. Evans Paul J. Ackerman Dirk J. Broer Jao van de Lagemaat Ivan I. Smalyukh Department of Physics and Materials Science and Engineering Program University of Colorado at Boulder Boulder Colorado 80309 USA Department of Electrical Computer and Energy Engineering and Liquid Crystals Materials Research Center University of Colorado at Boulder Boulder Colorado 80309 USA National Renewable Energy Laboratory Golden Colorado 80401 USA Functional Organic Materials and Devices Eindhoven University of Technology Box 513 5600 MB Eindhoven The Netherlands Renewable and Sustainable Energy Institute National Renewable Energy Laboratory and University of Colorado at Boulder Boulder Colorado 80309 USA

Defects in liquid crystals are used to model topological entities ranging from Skyrmions in high-energy physics to early-universe cosmic strings, as well as find practical applications in self-assembly of diffraction gratings and in scaffolding of plasmonic nanoparticles, but they are hard to control and organize into three-dimensional lattices. We laterally scan focused laser beams to produce periodic arrays of twist-stabilized defects forming either linear (fingers) or axially symmetric (torons) configurations in partially polymerizable liquid crystal films. Polymerization allows for stabilization of these structures and the formation of three-dimensional arrays of defects by stacking of the thin cholesteric films on top of each other. In the process of fabrication of such arrays, we polymerize the liquid crystal film with an array of torons or fingers and then sequentially produce and photopolymerize new liquid crystal layers on top of it, thus obtaining a three-dimensional structure of twist-stabilized defects in a layer-by-layer fashion. Templating by the polymerized layer spontaneously yields ordered organization of fingers and torons in the new cholesteric layer, thus enabling a three-dimensional ordered structure of defects. Nondestructive three-dimensional imaging of director fields by use of three-photon excitation fluorescence polarizing microscopy reveals the nature of topological singularities and physical underpinnings behind the observed templating effect. Three-dimensional patterning of defects templates the self-assembly of plasmonic nanoparticles into individual singularities and their arrays, laying the groundwork for potential applications in nanophotonics, plasmonics, metamaterial fabrication, and nanoscale energy conversion.

关键词： Self assembly

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Chromosome Classification for Metaphase Selection

Chromosome Classification for Metaphase Selection

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International Symposium on Communications and Information Technologies

作者： Ravi Uttamatanin Peerapol Yuvapoositanon Apichart Intarapanich Saowaluck Kaewkamnerd Sissades Tongsima The Electrical Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Bangkok Thailand Electronic Engineering Department Mahanakorn University of Technology Bangkok Thailand National Electronics and Computer Technology Center Pathumtani Thailand National Center for Genetic Engineering and Biotechnology Pathumtani Thailand

ISBN: (纸本)9781467355797

Identification of good metaphase spread is an important step in chromosome analysis for genetic disorder detection. In this paper, we propose a rule for chromosome classification to identify good metaphase spreads. The chromosome shapes were classified into four main classes. The first and the second classes refer to individual chromosomes with straight and bended shapes, respectively. The third class is characterized as those chromosomes with overlapping bodies and the forth class is for the non-chromosomal artifacts. Good metaphase spreads should largely contain the first and the second classes while the number of the third class should be kept minimal. Several image parameters were examined and used for creating rule-based classification. The threshold value for each parameter is determined using statistical model. We observed that the empirical probability density function of the parameters can be represented by Gaussian model and, hence, the threshold value can be easily determined. The proposed rules can efficiently and accurately classify the individual chromosome with > 90% accuracy.

关键词： Chromosome Metaphase selection Metaphase spread Rule base classification Gaussian model

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