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Sample records for fourth ieee workshop

  1. Proceedings of IEEE Machine Learning for Signal Processing Workshop XVI

    DEFF Research Database (Denmark)

    Larsen, Jan

    These proceedings contains refereed papers presented at the sixteenth IEEE Workshop on Machine Learning for Signal Processing (MLSP'2006), held in Maynooth, Co. Kildare, Ireland, September 6-8, 2006. This is a continuation of the IEEE Workshops on Neural Networks for Signal Processing (NNSP...... with sponsorship of the IEEE Signal Processing Society. Following the practice started three years ago, the bound volume of the proceedings is going to be published by IEEE following the Workshop, and we are pleased to offer to conference attendees the proceeding in a CDROM electronic format, which maintains...

  2. Proceedings of IEEE Machine Learning for Signal Processing Workshop XVI

    DEFF Research Database (Denmark)

    Larsen, Jan

    These proceedings contains refereed papers presented at the sixteenth IEEE Workshop on Machine Learning for Signal Processing (MLSP'2006), held in Maynooth, Co. Kildare, Ireland, September 6-8, 2006. This is a continuation of the IEEE Workshops on Neural Networks for Signal Processing (NNSP...... with sponsorship of the IEEE Signal Processing Society. Following the practice started three years ago, the bound volume of the proceedings is going to be published by IEEE following the Workshop, and we are pleased to offer to conference attendees the proceeding in a CDROM electronic format, which maintains...

  3. IEEE International Workshop on Machine Learning for Signal Processing: Preface

    DEFF Research Database (Denmark)

    Tao, Jianhua

    The 21st IEEE International Workshop on Machine Learning for Signal Processing will be held in Beijing, China, on September 18–21, 2011. The workshop series is the major annual technical event of the IEEE Signal Processing Society's Technical Committee on Machine Learning for Signal Processing...

  4. IEEE International Workshop on Machine Learning for Signal Processing: Preface

    DEFF Research Database (Denmark)

    Tao, Jianhua

    The 21st IEEE International Workshop on Machine Learning for Signal Processing will be held in Beijing, China, on September 18–21, 2011. The workshop series is the major annual technical event of the IEEE Signal Processing Society's Technical Committee on Machine Learning for Signal Processing...

  5. Proceedings of IEEE Machine Learning for Signal Processing Workshop XV

    DEFF Research Database (Denmark)

    Larsen, Jan

    These proceedings contains refereed papers presented at the Fifteenth IEEE Workshop on Machine Learning for Signal Processing (MLSP’2005), held in Mystic, Connecticut, USA, September 28-30, 2005. This is a continuation of the IEEE Workshops on Neural Networks for Signal Processing (NNSP) organized...... by the NNSP Technical Committee of the IEEE Signal Processing Society. The name of the Technical Committee, hence of the Workshop, was changed to Machine Learning for Signal Processing in September 2003 to better reflect the areas represented by the Technical Committee. The conference is organized...... by the Machine Learning for Signal Processing Technical Committee with sponsorship of the IEEE Signal Processing Society. Following the practice started two years ago, the bound volume of the proceedings is going to be published by IEEE following the Workshop, and we are pleased to offer to conference attendees...

  6. Proceedings of IEEE Machine Learning for Signal Processing Workshop XV

    DEFF Research Database (Denmark)

    Larsen, Jan

    These proceedings contains refereed papers presented at the Fifteenth IEEE Workshop on Machine Learning for Signal Processing (MLSP’2005), held in Mystic, Connecticut, USA, September 28-30, 2005. This is a continuation of the IEEE Workshops on Neural Networks for Signal Processing (NNSP) organized...... by the NNSP Technical Committee of the IEEE Signal Processing Society. The name of the Technical Committee, hence of the Workshop, was changed to Machine Learning for Signal Processing in September 2003 to better reflect the areas represented by the Technical Committee. The conference is organized...... by the Machine Learning for Signal Processing Technical Committee with sponsorship of the IEEE Signal Processing Society. Following the practice started two years ago, the bound volume of the proceedings is going to be published by IEEE following the Workshop, and we are pleased to offer to conference attendees...

  7. Proceedings of IEEE Workshop on Machine Learning for Signal Processing XIV

    DEFF Research Database (Denmark)

    Larsen, Jan

    This proceeding contains refereed papers presented at the fourteenth IEEE Workshop on Machine for Signal Processing (MLSP’2004), held at S\\~ao Luís, Maranh\\~ao, Brazil, September 29-October 1, 2004. This is a continuation of the IEEE workshops on Neural Networks for Signal Processing (NNSP...... by the Machine Learning for Signal Processing Technical Committee with sponsorship of the IEEE Signal Processing Society. Following the practice started last year, the bound volume of the proceedings is going to be published by IEEE following the workshop, and we are pleased to offer to conference attendees...

  8. Proceedings of IEEE Workshop on Machine Learning for Signal Processing XIV

    DEFF Research Database (Denmark)

    Larsen, Jan

    This proceeding contains refereed papers presented at the fourteenth IEEE Workshop on Machine for Signal Processing (MLSP’2004), held at S\\~ao Luís, Maranh\\~ao, Brazil, September 29-October 1, 2004. This is a continuation of the IEEE workshops on Neural Networks for Signal Processing (NNSP...... by the Machine Learning for Signal Processing Technical Committee with sponsorship of the IEEE Signal Processing Society. Following the practice started last year, the bound volume of the proceedings is going to be published by IEEE following the workshop, and we are pleased to offer to conference attendees...

  9. Proceedings of the IEEE 2003 Neural Networks for Signal Processing Workshop

    DEFF Research Database (Denmark)

    Larsen, Jan

    This proceeding contains refereed papers presented at the thirteenth IEEE Workshop on Neural Networks for Signal Processing (NNSP’2003), held at the Atria-Mercure Conference Center, Toulouse, France, September 17-19, 2003. The Neural Networks for Signal Processing Technical Committee of the IEEE...... Signal Processing Society organized the workshop with sponsorship of the Signal Processing Society and the co-operation of the IEEE Neural Networks Society. The IEEE Press published the previous twelve volumes of the NNSP Workshop proceedings in a hardbound volume. This year, the bound volume...... is to be published by IEEE following the workshop, and we are pleased to inaugurate a new CDROM electronic format, which maintains the same standard as the printed version and facilitates the reading and searching of the papers. In recent years, the field of neural networks has matured considerably in both...

  10. Proceedings of the IEEE 2003 Neural Networks for Signal Processing Workshop

    DEFF Research Database (Denmark)

    Larsen, Jan

    This proceeding contains refereed papers presented at the thirteenth IEEE Workshop on Neural Networks for Signal Processing (NNSP’2003), held at the Atria-Mercure Conference Center, Toulouse, France, September 17-19, 2003. The Neural Networks for Signal Processing Technical Committee of the IEEE...... Signal Processing Society organized the workshop with sponsorship of the Signal Processing Society and the co-operation of the IEEE Neural Networks Society. The IEEE Press published the previous twelve volumes of the NNSP Workshop proceedings in a hardbound volume. This year, the bound volume...... is to be published by IEEE following the workshop, and we are pleased to inaugurate a new CDROM electronic format, which maintains the same standard as the printed version and facilitates the reading and searching of the papers. In recent years, the field of neural networks has matured considerably in both...

  11. Proceedings: Fourth Workshop on Mining Scientific Datasets

    Energy Technology Data Exchange (ETDEWEB)

    Kamath, C

    2001-07-24

    Commercial applications of data mining in areas such as e-commerce, market-basket analysis, text-mining, and web-mining have taken on a central focus in the JCDD community. However, there is a significant amount of innovative data mining work taking place in the context of scientific and engineering applications that is not well represented in the mainstream KDD conferences. For example, scientific data mining techniques are being developed and applied to diverse fields such as remote sensing, physics, chemistry, biology, astronomy, structural mechanics, computational fluid dynamics etc. In these areas, data mining frequently complements and enhances existing analysis methods based on statistics, exploratory data analysis, and domain-specific approaches. On the surface, it may appear that data from one scientific field, say genomics, is very different from another field, such as physics. However, despite their diversity, there is much that is common across the mining of scientific and engineering data. For example, techniques used to identify objects in images are very similar, regardless of whether the images came from a remote sensing application, a physics experiment, an astronomy observation, or a medical study. Further, with data mining being applied to new types of data, such as mesh data from scientific simulations, there is the opportunity to apply and extend data mining to new scientific domains. This one-day workshop brings together data miners analyzing science data and scientists from diverse fields to share their experiences, learn how techniques developed in one field can be applied in another, and better understand some of the newer techniques being developed in the KDD community. This is the fourth workshop on the topic of Mining Scientific Data sets; for information on earlier workshops, see http://www.ahpcrc.org/conferences/. This workshop continues the tradition of addressing challenging problems in a field where the diversity of applications is

  12. Fourth International Workshop on Spoken Dialog Systems

    CERN Document Server

    Rosset, Sophie; Garnier-Rizet, Martine; Devillers, Laurence; Natural Interaction with Robots, Knowbots and Smartphones : Putting Spoken Dialog Systems into Practice

    2014-01-01

    These proceedings presents the state-of-the-art in spoken dialog systems with applications in robotics, knowledge access and communication. It addresses specifically: 1. Dialog for interacting with smartphones; 2. Dialog for Open Domain knowledge access; 3. Dialog for robot interaction; 4. Mediated dialog (including crosslingual dialog involving Speech Translation); and, 5. Dialog quality evaluation. These articles were presented at the IWSDS 2012 workshop.

  13. Editorial Introduction: Fourth Planetary Dunes Workshop Special Issue

    Science.gov (United States)

    Chojnacki, Matthew; Telfer, Matt W.

    2017-06-01

    The Fourth International Planetary Dunes Workshop: Integrating Models, Remote Sensing, and Field Data was held May 19-22, 2015 in Boise, Idaho (see Final Announcement). More than 60 researchers and students participated in two and a half days of presentations and lively discussion, plus a full day field trip to Bruneau Dunes State Park. The workshop focused on the many landforms and deposits created by the dynamic interactions between granular material and airflow (aeolian processes). These processes are known to occur on several planetary bodies, including Earth, Mars, Titan, Venus, and possibly, cometary surfaces. The overarching purpose of this workshop was to provide a forum for discussion and the exchange of new ideas and approaches to gaining new insights into planetary aeolian processes. Meeting programs, abstracts, and E-Posters are all available at the workshop website (http://www.hou.usra.edu/meetings/dunes2015/)

  14. Proceedings Fourth Workshop on Mathematically Structured Functional Programming

    CERN Document Server

    Chapman, James; 10.4204/EPTCS.76

    2012-01-01

    This volume contains the proceedings of the Fourth Workshop on Mathematically Structured Functional Programming (MSFP 2012), taking place on 25 March, 2012 in Tallinn, Estonia, as a satellite event of the European Joint Conferences on Theory and Practice of Software, ETAPS 2012. MSFP is devoted to the derivation of functionality from structure. It highlights concepts from algebra, semantics and type theory as they are increasingly reflected in programming practice, especially functional programming. The workshop consists of two invited presentations and eight contributed papers on a range of topics at that interface.

  15. IEEE/NASA Workshop on Leveraging Applications of Formal Methods, Verification, and Validation

    Science.gov (United States)

    Margaria, Tiziana (Editor); Steffen, Bernhard (Editor); Hichey, Michael G.

    2005-01-01

    This volume contains the Preliminary Proceedings of the 2005 IEEE ISoLA Workshop on Leveraging Applications of Formal Methods, Verification, and Validation, with a special track on the theme of Formal Methods in Human and Robotic Space Exploration. The workshop was held on 23-24 September 2005 at the Loyola College Graduate Center, Columbia, MD, USA. The idea behind the Workshop arose from the experience and feedback of ISoLA 2004, the 1st International Symposium on Leveraging Applications of Formal Methods held in Paphos (Cyprus) last October-November. ISoLA 2004 served the need of providing a forum for developers, users, and researchers to discuss issues related to the adoption and use of rigorous tools and methods for the specification, analysis, verification, certification, construction, test, and maintenance of systems from the point of view of their different application domains.

  16. Fourth international workshop on human chromosome 5. Final progress report

    Energy Technology Data Exchange (ETDEWEB)

    McPherson, J.D.

    1996-12-31

    The Fourth International Workshop on Human Chromosome 5 was held in Manchester, UK on November 9--10, 1996 and was hosted by the University of Manchester. The major goals of the workshop were: (1) to collate the various genetic, cytogenetic and physical maps of human chromosome 5; (2) to integrate these maps and identify/correct discrepancies between them wherever possible; (3) to catalogue the sequence-ready contigs of the chromosome; (4) to co-ordinate the various sequencing efforts to avoid future duplication; (5) to establish the first (to the author`s knowledge) web site for the human chromosome 5 community which contains the above information in a readily accessible form.

  17. EDITORIAL: The Fourth International Workshop on Microfactories (IWMF'04)

    Science.gov (United States)

    Chu, Jiaru; Maeda, Ryutaro

    2005-10-01

    This special section of Journal of Micromechanics and Microengineering is devoted to the fourth International Workshop on Microfactories. After the first three successful Workshops, which took place in Tsukuba, Japan in 1998, Fribourg, Switzerland in 2000 and Minneapolis, USA in 2002, the fourth (IWMF'04) was held in Shanghai, China on 15-17 October 2004. The concept of the `microfactory' and miniaturized production systems was first proposed by the Mechanical Engineering Laboratory in Japan who demonstrated the feasibility of downsizing energy-saving, distributed and eventually environmentally conscious manufacturing systems. There is incredible potential in reducing the physical scale of numerous processes related to the manufacture of many forms of future dense `mechatronic' products and in the manipulation of microscopic and nanoscopic objects and materials for the benefit of mankind. Small systems capable of these operations can be referred to as `microfactories'. A worldwide effort is currently underway to bring such microfactories to fruition. MEMS, MST and micromachines are regarded as synonyms, but they do not necessarily have the same meaning. In particular, differences can be found in their technological approaches. Roughly speaking, research and development in the USA is based primarily on surface or bulk silicon micromachining processes, and the ideal realization of MEMS seems to be the monolithic device. The European approach also focuses on integration between electronics and mechanics but, especially in connection with the development of `µTAS', it also demands the integration of non-mechanical components into the system. In Japan the approaches for MST are said to be rather less focused. Besides the above-mentioned `classical' microsystem technologies, down-scaling of conventional manufacturing methods, or non-silicon based device processing within this field, completely new technological methods are also considered as `microsystem technologies

  18. PREFACE: Fourth International Workshop on Inelastic Ion-Surface Collisions

    Science.gov (United States)

    Sigmund, Peter

    1983-01-01

    The Fourth International Workshop on Inelastic Ion-Surface Collisions was held at Hindsgavl Manor near Middelfart, Denmark from 21 to 24 September 1982, following previous workshops held in Murray Hill, New Jersey (1976), Hamilton, Ontario (1978) and Feldkirchen-Westerham, Bavaria (1980). Like in the previous meetings, the underlying idea was to gather a moderately small group of researchers to discuss fundamental physical and chemical problems in a number of areas that are related, but are normally represented at separate conferences focusing on different aspects. The area of inelastic ion-surface collisions has a wide diversity of applications ranging from surface analysis by particle impact through microelectronic and controlled thermonuclear fusion devices to biomolecule identification and solar wind effects in planetary space. There are strong links to surface science and atomic collision physics and their respective applications. The present series of workshops is an attempt to focus on fundamental problems common to all these areas and thus to provide a forum for fruitful interaction. At Middelfart, we were lucky to have an exceptional number of well-presented and stimulating summary talks covering a rather broad range of fundamental processes with the emphasis shifting back and forth between collisional and surface aspects. Moreover, there was a wealth of short contributions on current research, of which many were submitted to the present proceedings. Thanks to the speakers, an active audience, and considerate session chairmen, we had extensive and lively but friendly discussions in an always stimulating atmosphere. This volume contains 11 of 13 invited papers and 15 of the 30 contributions presented orally at the workshop. It should, like the proceedings of the previous workshops, give a balanced survey of the current status of the field, with a slight bias toward recent developments like those in the theory of charge states of sputtered atoms, and others

  19. Summary of the Fourth AIAA CFD Drag Prediction Workshop

    Science.gov (United States)

    Vassberg, John C.; Tinoco, Edward N.; Mani, Mori; Rider, Ben; Zickuhr, Tom; Levy, David W.; Brodersen, Olaf P.; Eisfeld, Bernhard; Crippa, Simone; Wahls, Richard A.; Morrison, Joseph H.; Mavriplis, Dimitri J.; Murayama, Mitcuhiro

    2010-01-01

    Results from the Fourth AIAA Drag Prediction Workshop (DPW-IV) are summarized. The workshop focused on the prediction of both absolute and differential drag levels for wing-body and wing-body-horizontal-tail configurations that are representative of transonic transport air- craft. Numerical calculations are performed using industry-relevant test cases that include lift- specific flight conditions, trimmed drag polars, downwash variations, dragrises and Reynolds- number effects. Drag, lift and pitching moment predictions from numerous Reynolds-Averaged Navier-Stokes computational fluid dynamics methods are presented. Solutions are performed on structured, unstructured and hybrid grid systems. The structured-grid sets include point- matched multi-block meshes and over-set grid systems. The unstructured and hybrid grid sets are comprised of tetrahedral, pyramid, prismatic, and hexahedral elements. Effort is made to provide a high-quality and parametrically consistent family of grids for each grid type about each configuration under study. The wing-body-horizontal families are comprised of a coarse, medium and fine grid; an optional extra-fine grid augments several of the grid families. These mesh sequences are utilized to determine asymptotic grid-convergence characteristics of the solution sets, and to estimate grid-converged absolute drag levels of the wing-body-horizontal configuration using Richardson extrapolation.

  20. Fourth NASA Workshop on Computational Control of Flexible Aerospace Systems, part 2

    Science.gov (United States)

    Taylor, Lawrence W., Jr. (Compiler)

    1991-01-01

    A collection of papers presented at the Fourth NASA Workshop on Computational Control of Flexible Aerospace Systems is given. The papers address modeling, systems identification, and control of flexible aircraft, spacecraft and robotic systems.

  1. Proceedings of the Fourth Workshop on Explicit Substitutions Theory and Applications (WESTAPP '01)

    NARCIS (Netherlands)

    Lescanne, P.

    2008-01-01

    This report contains the proceedings of the fourth Workshop on Explicit Substitutions Theory and Applications. Prior events took place at Tsukuba (1998), Trento (1999) and Norwich (2000). The aim of this workshop is to bring together researchers working on both theoretical and applied aspects of exp

  2. Statistical Analysis of CFD Solutions from the Fourth AIAA Drag Prediction Workshop

    Science.gov (United States)

    Morrison, Joseph H.

    2010-01-01

    A graphical framework is used for statistical analysis of the results from an extensive N-version test of a collection of Reynolds-averaged Navier-Stokes computational fluid dynamics codes. The solutions were obtained by code developers and users from the U.S., Europe, Asia, and Russia using a variety of grid systems and turbulence models for the June 2009 4th Drag Prediction Workshop sponsored by the AIAA Applied Aerodynamics Technical Committee. The aerodynamic configuration for this workshop was a new subsonic transport model, the Common Research Model, designed using a modern approach for the wing and included a horizontal tail. The fourth workshop focused on the prediction of both absolute and incremental drag levels for wing-body and wing-body-horizontal tail configurations. This work continues the statistical analysis begun in the earlier workshops and compares the results from the grid convergence study of the most recent workshop with earlier workshops using the statistical framework.

  3. Proceedings Fourth European Young Researchers Workshop on Service Oriented Computing

    CERN Document Server

    ter Beek, Maurice H

    2009-01-01

    Service-Oriented Computing (SOC) is an emerging new paradigm for distributed and object-oriented computing by allowing autonomous, platform-independent computational entities (called services) to be built (described, discovered, composed, orchestrated) within and across organizational boundaries. Like no other computing paradigm before, SOC is destined to exert a lasting influence on the business domain, among others (e-commerce, e-government, e-business, e-learning, e-health, etc.). The Young Researchers workshop series on Service-Oriented Computing is meant to be a platform for junior researchers from industry and academics alike. Its core objectives are to exchange information regarding advancements in the state of the art and practice of SOC, as well as to identify emerging research topics and the future trends in this domain. Following the success of the previous three workshops, the 4th European Young Researchers Workshop on Service-Oriented Computing (YR-SOC 2009) introduced two novelties: it was organ...

  4. Proceedings of the fourth annual geothermal conference and workshop

    Energy Technology Data Exchange (ETDEWEB)

    1980-12-01

    Thirty-eight papers are included. One was indexed previously for EDB. Separate abstracts were prepared for thirty-three papers and two were listed by title. Reports of two workshop discussion groups on Achieving Technical Performance and Obtaining a License and Protecting the Environment were not abstracted for EDB. (MHR)

  5. Proceedings of the Twenty-Fourth Annual Software Engineering Workshop

    Science.gov (United States)

    2000-01-01

    On December 1 and 2, the Software Engineering Laboratory (SEL), a consortium composed of NASA/Goddard, the University of Maryland, and CSC, held the 24th Software Engineering Workshop (SEW), the last of the millennium. Approximately 240 people attended the 2-day workshop. Day 1 was composed of four sessions: International Influence of the Software Engineering Laboratory; Object Oriented Testing and Reading; Software Process Improvement; and Space Software. For the first session, three internationally known software process experts discussed the influence of the SEL with respect to software engineering research. In the Space Software session, prominent representatives from three different NASA sites- GSFC's Marti Szczur, the Jet Propulsion Laboratory's Rick Doyle, and the Ames Research Center IV&V Facility's Lou Blazy- discussed the future of space software in their respective centers. At the end of the first day, the SEW sponsored a reception at the GSFC Visitors' Center. Day 2 also provided four sessions: Using the Experience Factory; A panel discussion entitled "Software Past, Present, and Future: Views from Government, Industry, and Academia"; Inspections; and COTS. The day started with an excellent talk by CSC's Frank McGarry on "Attaining Level 5 in CMM Process Maturity." Session 2, the panel discussion on software, featured NASA Chief Information Officer Lee Holcomb (Government), our own Jerry Page (Industry), and Mike Evangelist of the National Science Foundation (Academia). Each presented his perspective on the most important developments in software in the past 10 years, in the present, and in the future.

  6. Fourth Integrated Communications, Navigation, and Surveillance (ICNS) Conference and Workshop 2004: Conclusions and Recommendations

    Science.gov (United States)

    Phillips, Brent; Swanda, Ronald L.; Lewis, Michael S.; Kenagy, Randy; Donahue, George; Homans, Al; Kerczewski, Robert; Pozesky, Marty

    2004-01-01

    The NASA Glenn Research Center organized and hosted the Fourth Integrated Communications, Navigation, and Surveillance (ICNS) Technologies Conference and Workshop, which took place April 26-30, 2004 at the Hyatt Fair Lakes Hotel in Fairfax, Virginia. This fourth conference of the annual series followed the very successful first ICNS Conference (May 1-3, 2001 in Cleveland, Ohio), second ICNS conference (April 29-May 2, 2002 in Vienna, Virginia), and third ICNS conference (May 19-22, 2003 in Annapolis, Maryland). The purpose of the Fourth ICNS Conference was to assemble government, industry and academic communities performing research and development for advanced digital communications, surveillance and navigation systems and associated applications supporting the national and global air transportation systems to: 1) Understand current efforts and recent results in near- and far-term R&D and technology demonstration; 2) Identify integrated digital communications, navigation and surveillance R&D requirements necessary for a safe, secure and reliable, high-capacity, advanced air transportation system; 3) Provide a forum for fostering collaboration and coordination; and 4) Discuss critical issues and develop recommendations to achieve the future integrated CNS vision for national and global air transportation. The workshop attracted 316 attendees from government, industry and academia to address these purposes through technical presentations, breakout sessions, and individual and group discussions during the workshop and after-hours events, and included 16 international attendees. An Executive Committee consisting of representatives of several key segments of the aviation community concerned with CNS issues met on the day following the workshop to consider the primary outcomes and recommendations of the workshop. This report presents an overview of the conference, workshop breakout session results, and the findings of the Executive Committee.

  7. Report of the Fourth International Workshop on human X chromosome mapping 1993

    Energy Technology Data Exchange (ETDEWEB)

    Schlessinger, D.; Mandel, J.L.; Monaco, A.P.; Nelson, D.L.; Willard, H.F. [eds.

    1993-12-31

    Vigorous interactive efforts by the X chromosome community have led to accelerated mapping in the last six months. Seventy-five participants from 12 countries around the globe contributed progress reports to the Fourth International X Chromosome Workshop, at St. Louis, MO, May 9-12, 1993. It became clear that well over half the chromosome is now covered by YAC contigs that are being extended, verified, and aligned by their content of STSs and other markers placed by cytogenetic or linkage mapping techniques. The major aim of the workshop was to assemble the consensus map that appears in this report, summarizing both consensus order and YAC contig information.

  8. Fourth Workshop and Tutorial on Practical Use of Coloured Petri Nets and the CPN Tools

    DEFF Research Database (Denmark)

    Coloured Petri Nets and the CPN tools are now used by more than 750 organisations in 50 different countries all over the world (including 150 commercial companies). The purpose of this event is to bring together some of the users and in this way provide a forum for those who are interested...... in the practical use of Coloured Petri Nets and the CPN tools. This booklet contains the proceedings of the Fourth Workshop on Practical Use of Coloured Petri Nets and the CPN Tools, August 28-30, 2002. The workshop is organised by the CPN group at the Department of Computer Science, University of Aarhus, Denmark....

  9. 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detectors Workshop

    Science.gov (United States)

    The Nuclear Science Symposium (NSS) offers an outstanding opportunity for scientists and engineers interested or actively working in the fields of nuclear science, radiation instrumentation, software and their applications, to meet and discuss with colleagues from around the world. The program emphasizes the latest developments in technology and instrumentation and their implementation in experiments for space sciences, accelerators, other radiation environments, and homeland security. The Medical Imaging Conference (MIC) is the foremost international scientific meeting on the physics, engineering and mathematical aspects of nuclear medicine based imaging. As the field develops, multi-modality approaches are becoming more and more important. The content of the MIC reflects this, with a growing emphasis on the methodologies of X-ray, optical and MR imaging as they relate to nuclear imaging techniques. In addition, specialized topics will be addressed in the Short Courses and Workshops programs. The Workshop on Room-Temperature Semiconductor Detectors (RTSD) represents the largest forum of scientists and engineers developing new semiconductor radiation detectors and imaging arrays. Room-temperature solid-state radiation detectors for X-ray, gamma-ray, and neutron radiation are finding increasing applications in such diverse fields as medicine, homeland security, astrophysics and environmental remediation. The objective of this workshop is to provide a forum for discussion of the state of the art of material development for semiconductor, scintillator, and organic materials for detection, materials characterization, device fabrication and technology, electronics and applications.

  10. A Special Issue on the Epididymis & The Proceedings of the Fourth Workshop on the Epididymis (Epid Ⅳ)

    Institute of Scientific and Technical Information of China (English)

    Jo(e)l R. Drevet; Barry T. Hinton; Trevor G. Cooper

    2007-01-01

    @@ The Fourth Epididymis (Epid Ⅳ) Workshop was held between December 4th and 7th 2006 in Chatel-Guyon,France. This was the first European venue for these workshops following Epid Ⅲ held in Charlottesville, Virginia,USA in 2002, Epid Ⅱ held in Newcastle, Australia in 1998 and a one-day meeting (later named Epid Ⅰ) in Hong Kong,China in 1992.

  11. Proceedings of the fourth international workshop on the genetics of host-parasite interactions in forestry: Disease and insect resistance in forest trees

    Science.gov (United States)

    Richard A. Sniezko; Alvin D. Yanchuk; John T. Kliejunas; Katharine M. Palmieri; Janice M. Alexander; Susan J. Frankel

    2012-01-01

    Individual papers are available at http://www.fs.fed.us/psw/publications/documents/psw_gtr240/The Fourth International Workshop on the Genetics of Host-Parasite Interactions in Forestry: Disease and Insect Resistance in Forest Trees...

  12. Fourth International Workshop on Sharing and Reusing Architectural Knowledge (SHARK 2009)

    NARCIS (Netherlands)

    Lago, Patricia; Avgeriou, Paris; Kruchten, Philippe

    2009-01-01

    Architectural knowledge has been recognized by the software architecture community as a self-contained research area in software architecture, and brought along some promising research directions. In this workshop we discuss the issues that lead to the application of architectural knowledge in resea

  13. EDITORIAL: The Fourth International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2004)

    Science.gov (United States)

    Tanaka, Shuji; Toriyama, Toshiyuki

    2005-09-01

    This special issue of the Journal of Micromechanics and Microengineering features papers selected from the Fourth International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2004). The workshop was held in Kyoto, Japan, on 28-30 November 2004, by The Ritsumeikan Research Institute of Micro System Technology in cooperation with The Global Emerging Technology Institute, The Institute of Electrical Engineers of Japan, The Sensors and Micromachines Society, The Micromachine Center and The Kyoto Nanotech Cluster. Power MEMS is one of the newest categories of MEMS, which encompasses microdevices and microsystems for power generation, energy conversion and propulsion. The first concept of power MEMS was proposed in the late 1990s by Epstein's group at the Massachusetts Institute of Technology, where they continue to study MEMS-based gas turbine generators. Since then, the research and development of power MEMS have been promoted by the need for compact power sources with high energy and power density. Since its inception, power MEMS has expanded to include not only various MEMS-based power generators but also small energy machines and microdevices for macro power generators. At the last workshop, various devices and systems, such as portable fuel cells and their peripherals, micro and small turbo machinery, energy harvesting microdevices, and microthrusters, were presented. Their power levels vary from ten nanowatts to hundreds of watts, spanning ten orders of magnitude. The first PowerMEMS workshop was held in 2000 in Sendai, Japan, and consisted of only seven invited presentations. The workshop has grown since then, and in 2004 there were 5 invited, 20 oral and 29 poster presentations. From the 54 papers in the proceedings, 12 papers have been selected for this special issue. I would like to express my appreciation to the members of the Organizing Committee and Technical Program Committee. This special issue was

  14. Proceedings Fourth Workshop on Membrane Computing and Biologically Inspired Process Calculi 2010

    CERN Document Server

    Ciobanu, Gabriel; 10.4204/EPTCS.40

    2010-01-01

    The 4th Workshop on Membrane Computing and Biologically Inspired Process Calculi (MeCBIC 2010) is organized in Jena as a satellite event of the Eleventh International Conference on Membrane Computing (CMC11). Biological membranes play a fundamental role in the complex reactions which take place in cells of living organisms. The importance of this role has been considered in two different types of formalisms introduced recently. Membrane systems were introduced as a class of distributed parallel computing devices inspired by the observation that any biological system is a complex hierarchical structure, with a flow of biochemical substances and information that underlies their functioning. The modeling and analysis of biological systems has also attracted considerable interest of the process algebra research community. Thus the notions of membranes and compartments have been explicitly represented in a family of calculi, such as ambients and brane calculi. A cross fertilization of these two research areas has ...

  15. Engineering in the Service of Society: New Educational Programs. IEEE Workshop Record. University of Kentucky, Lexington, August 26-27, 1974).

    Science.gov (United States)

    Institute of Electrical and Electronics Engineers, Inc., New York, NY.

    Twenty-seven papers related to the themes of making engineering education more responsive to societal needs and integrating social implications into curriculum which were read and/or submitted at the workshop appear in the text. In addition, the results of five workshops sessions are reported. Summaries and recommendations are made in the areas…

  16. Assessment and the feasibility of improving the artificial lighting system in technical services workshop located in the Fourth South Pars Gas Refinery

    Directory of Open Access Journals (Sweden)

    masoud shafiee motlagh

    2015-09-01

    Full Text Available Background & Objectives: Desirable and ergonomic lighting in the workplaces has a significant impact on the visual effects and improve the efficiency and productivity of employees. This study aims to evaluate the lighting system and feasibility of improving the artificial lighting system for comfort lighting in the workshop of the Fourth South Pars Gas Refinery. Methods: In this descriptive-analytical study, the environmental conditions of the studied workshop were evaluated and the illuminance was measured in both day and night times at 216 points. Based on lighting measurements, a site map was provided. Further, based on current conditions of the workshop, illuminance was estimated using DIALux 4.12 lighting calculations software. In regard to the national recommended limits for industrial lighting and the current luminaires, the different practical, accessible and low cost solutions were presented. Using the mentioned software, the share of each proposed solutions for improving workshop lighting were estimated. Results: The results showed that illuminance of the workshop in day and night times were equal to 197±71.5lx and 160±50.6 lx, respectively. The same results were also acquired by software calculations. Based on the results, lighting system was considered as undesirable lighting system along with need to modifications. Workshop lighting can increase between 260 lx to 405 lx through employing the proposed solutions based on the software predictions. Conclusion: The results confirmed that the low cost and simple solutions can significantly be improved the ergonomic and comfort lighting in the workplace. The use of the specialized tools calculations by experts and designers can be also facilitated the conducting feasibility reliable.

  17. IEEE WEA 2012 - Mejores Trabajos

    Directory of Open Access Journals (Sweden)

    Miguel Alberto Melgarejo Rey

    2013-06-01

    Full Text Available El 2012 Workshop on Engineering Applications (WEA 2012 realizado porla Facultad de Ingeniería de la Universidad Distrital Francisco José deCaldas y su rama estudiantil IEEE (Institute for Electrical and ElectronicsEngineers, del 2 al 4 de mayo de 2012, fue un espacio académico dondeconvergieron academia e industria alrededor de áreas tan diversas comoel control, las comunicaciones, la electrónica de potencia, el procesamientode señales entre otras .A pesar de ser la primera edición delWEA, esta se caracterizó por una nutrida participación, se recibieron 69artículos, 49 provenientes de Colombia y 20 de otros países.

  18. An official American Thoracic Society proceedings: work-related asthma and airway diseases. Presentations and discussion from the Fourth Jack Pepys Workshop on Asthma in the Workplace.

    Science.gov (United States)

    Tarlo, Susan M; Malo, Jean-Luc

    2013-08-01

    Work-related asthma is a common occupational lung disease. The scope of the Fourth Jack Pepys Workshop that was held in May 2010 went beyond asthma to include discussion of other occupational airway diseases, in particular occupationally related chronic obstructive pulmonary disease (COPD) and bronchiolitis. Aspects explored included public health considerations, environmental aspects, outcome after diagnosis, prevention and surveillance, and other work-related obstructive airway diseases. Consistent methods are needed to accurately estimate the comparative burden of occupation-related airway diseases among different countries. Challenges to accomplishing this include variability in health care delivery, compensation systems, cultural contexts, and social structures. These factors can affect disease estimates, while heterogeneity in occupations and workplace exposures can affect the underlying true prevalence of morbidity. Consideration of the working environment included discussion of practical methods of limiting exposure to respiratory sensitizers, methods to predict new sensitizers before introduction into workplaces, the role of legislated exposure limits, and models to estimate relative validity of various ameliorative measures when complete avoidance of the sensitizer is not feasible. Other strategies discussed included medical surveillance measures and education, especially for young individuals with asthma and new workers about to enter the workforce. Medical outcomes after development of sensitizer-induced occupational asthma are best following earlier diagnosis and removal from further exposure, but a subset may be able to continue working safely provided that exposure is reduced under close follow-up monitoring. It was recognized that occupationally related COPD is common but underappreciated, deserving further study and prevention efforts.

  19. Fourth Aircraft Interior Noise Workshop

    Science.gov (United States)

    1992-07-01

    OPi »0Pi 60 I !J:-»*C Predicted pressure fifld or ik- Irf’.K’id c :.• o’":,•.• S: •"• r’V" different unc weps KU • Scheme of computation...I--: MODEL VALIDATION AKALTSIS I 4 Acoustic Mockup shaker test simulation * 16 shakers with simultaneously sinusodial force ( 95 Hz

  20. Proceedings of the IEEE Machine Learning for Signal Processing XVII

    DEFF Research Database (Denmark)

    The seventeenth of a series of workshops sponsored by the IEEE Signal Processing Society and organized by the Machine Learning for Signal Processing Technical Committee (MLSP-TC). The field of machine learning has matured considerably in both methodology and real-world application domains and has...

  1. Editorial for the IEEE Transactions on Power Electronics, January 2009

    DEFF Research Database (Denmark)

    Blaabjerg, Frede

    2009-01-01

    I am entering the fourth year as the Editor in Chief of the IEEE TRANSACTIONS ON POWER ELECTRONICS. A position like this becomes more and more important for the technical field as publishing in a peer-reviewed highly ranked journal has influence on the industrial and academic career. It is a way...

  2. IEEE Prize for Lucio Rossi

    CERN Multimedia

    IEEE Council on Superconductivity

    2007-01-01

    Lucio Rossi receives his prize from John Spargo, Chairman of the IEEE Council on Superconductivity (left), and Martin Nisenoff, Chairman of the Council on Superconductivity's Awards Committee (right).

  3. Final Scientific/Technical Report On AWARD NO. DE-SC0015635 “Organization of the 17th Advanced Accelerator Concepts (AAC16) Workshop by the IEEE” The IEEE Council on Superconductivity David F. Sutter (PI) Institute of Electrical & Electronics Engineers, Inc. 445 Hoes Lane Piscataway, NJ, 088544141, US. Period of time covered by the report: 5/1/2016 – 7/30/2017

    Energy Technology Data Exchange (ETDEWEB)

    Sutter, David F. [Inst. of Electrical and Electronics Engineers Inc., Piscataway, NJ (United States)

    2017-07-15

    The 2016 Workshop on Advanced Accelerator Concepts (AAC) was held at the Gaylord Hotel and Conference Center, National Harbor, Maryland, from July 31 through August 5, 2016. This workshop was the seventeenth in a biennial series that began at Los Alamos National Laboratory in 1982 with a workshop on laser acceleration of particles (see AIP Conf. Proc. 91). AAC16 was organized under the sponsorship of the IEEE Council on Superconductivity with financial support from the U. S. Department of Energy Office of High Energy Physics and the National Science Foundation. The scope of the AAC Workshop has grown since 1982 to encompass a broad range of topics related to advancing accelerator science and technology beyond its current scientific and technical limits and is now an internationally acknowledged forum for interdisciplinary discussions on advanced accelerator and beam physics/technology concepts covering the widest possible range of applications. The Workshop continued the trend of growing worldwide participation, attracting world wide participation. The Workshop had a total of 256 attendees comprising (including the U.S.) representatives from 11 countries representing 65 different institutions. Each day’s schedule began with plenary sessions covering broad, cross disciplinary interests or general tutorial topics as selected by the Program Committee, followed by a break out into more narrowly focused working groups. The Workshop was organized into eight Working Groups each with a published statement of topical focus, scope of discussion and goals. A summary of the Working Group activities and conclusions is included in the American Institute of Physics’ (AIP) Conference Proceedings now available as an on line open source document. It has been a long tradition of the AAC workshops to encourage strong student participation. This is accomplished in part by subsidizing student attendance, done for this work shop by using funds from the DOE and National Science

  4. Access to IEEE Electronic Library

    CERN Multimedia

    2007-01-01

    From 2007, the CERN Library now offers readers online access to the complete IEEE Electronic Library (Institute of Electrical and Electronics Engineers). This new licence gives unlimited online access to all IEEE and IET (previously IEE) journals and proceedings as well as all current IEEE standards and selected archived ones. Some of the titles offer volumes back to 1913. This service currently represents more than 1,400,000 full-text articles! This leading engineering information resource replaces the previous service, a sub-product of the IEEE database called 'IEEE Enterprise', which offered online access to the complete collection of IEEE journals and proceedings, but with limited features. The service had become so popular that the CERN Working Group for Acquisitions recommended that the Library subscribe to the complete IEEE Electronic Library for 2007. Usage statistics for recent months showed there was a demand for the service from a large community of CERN users and we were aware that many users h...

  5. 7th IEEE International Conference Intelligent Systems

    CERN Document Server

    Atanassov, KT; Doukovska, L; Hadjiski, M; Jotsov, V; Kacprzyk, J; Kasabov, N; Sotirov, S; Szmidt, E; Zadrożny, S; Filev, D; Jabłkowski, J; Kacprzyk, J; Krawczak, M; Popchev, I; Rutkowski, L; Sgurev, V; Sotirova, E; Szynkarczyk, P

    2015-01-01

    This two volume set of books constitutes the proceedings of the 2014  7th IEEE International Conference Intelligent Systems (IS), or IEEE IS’2014 for short, held on September 24‐26, 2014 in Warsaw, Poland. Moreover, it contains some selected papers from the collocated IWIFSGN'2014-Thirteenth International Workshop on Intuitionistic Fuzzy Sets and Generalized Nets.The conference was organized by the Systems Research Institute, Polish Academy of Sciences, Department IV of Engineering Sciences, Polish Academy of Sciences, and Industrial Institute of Automation and Measurements - PIAP.The papers included in the two proceedings volumes have been subject to a thorough review process by three highly qualified peer reviewers.Comments and suggestions from them have considerable helped improve the quality of the papers but also the division of the volumes into parts, and assignment of the papers to the best suited parts.  

  6. IEEE Conference Publications in Libraries.

    Science.gov (United States)

    Johnson, Karl E.

    1984-01-01

    Conclusions of surveys (63 libraries, OCLC database, University of Rhode Island users) assessing handling of Institute of Electrical and Electronics Engineers (IEEE) conference publications indicate that most libraries fully catalog these publications using LC cataloging, and library patrons frequently require series access to publications. Eight…

  7. IEEE Conference Publications in Libraries.

    Science.gov (United States)

    Johnson, Karl E.

    1984-01-01

    Conclusions of surveys (63 libraries, OCLC database, University of Rhode Island users) assessing handling of Institute of Electrical and Electronics Engineers (IEEE) conference publications indicate that most libraries fully catalog these publications using LC cataloging, and library patrons frequently require series access to publications. Eight…

  8. Fourth quantization

    Energy Technology Data Exchange (ETDEWEB)

    Faizal, Mir

    2013-12-18

    In this Letter we will analyze the creation of the multiverse. We will first calculate the wave function for the multiverse using third quantization. Then we will fourth-quantize this theory. We will show that there is no single vacuum state for this theory. Thus, we can end up with a multiverse, even after starting from a vacuum state. This will be used as a possible explanation for the creation of the multiverse. We also analyze the effect of interactions in this fourth-quantized theory.

  9. IEEE Prize for Lucio Rossi

    CERN Multimedia

    2007-01-01

    Lucio Rossi receives his prize from John Spargo, Chairman of the IEEE Council on Superconductivity (left), and Martin Nisenoff, Chairman of the Council on Superconductivity’s Awards Committee (right). (Photo: IEEE Council on Superconductivity)With the magnets installed in the tunnel and work on the interconnections almost completed, Lucio Rossi has reaped the rewards of fifteen years of work. And yet, when the physicist from Milan arrived to take charge of the group responsible for the superconducting magnets in 2001, success seemed far from assured. Endowed with surprising levels of energy, Lucio Rossi, together with his team, ensured that production of these highly complex magnets got underway. Today, that achievement earns them the recognition not only of CERN but also of the international superconducting community. It is for this achievement that Lucio Rossi was awarded the prize by the IEEE’s (Institute of Electrical an...

  10. Throughput Limits of IEEE 802.11 and IEEE 802.15.3

    OpenAIRE

    Ullah, Sana; Zhong, Yingji; Islam, S. M. Riazul; Nessa, Ahasanun; Kwak, Kyung Sup

    2009-01-01

    IEEE 802.11 and IEEE 802.15.3 are wireless standards originally designed for wireless local area network (WLAN) and wireless personal area network (WPAN). This paper studies MAC throughput analysis of both standards. We present a comparative analysis of both standards in terms of MAC throughput and bandwidth efficiency. Numerical results show that the performance of IEEE 802.15.3 transcends IEEE 802.11 in all cases.

  11. The IEEE Milestone event at CERN

    CERN Multimedia

    2005-01-01

    On the initiative of its French and Swiss Sections, the IEEE has honoured CERN with an 'IEEE Milestone in the history of electricity and electronics' for the invention of the multi-wire proportional chamber in 1968. The IEEE established the Electrical Engineering Milestones programe in 1983 to honour significant achievements in the history of electrical and electronics engineering. To be designated, an achievement must be at least 25 years old, must have involved a unique solution to an engineering problem, and must have had at least regional impact. Currently there are more than  50 IEEE Milestones around the world. http://www.ieee.org/organizations/history_center/cern.html The installation and unveiling of this IEEE Milestone will provide the opportunity to emphasize the close relationship between science, technology, industry and well-being in society.  A ceremony, organised with the support of a group of IEEE members working at CERN, will be held at the CERN Globe of Science and Inn...

  12. Proceedings Sixth Workshop on Intersection Types and Related Systems

    OpenAIRE

    Graham-Lengrand, Stéphane; Paolini, Luca

    2013-01-01

    This volume contains the proceedings of the Sixth Workshop on Intersection Types and Related Systems (ITRS 2012). The workshop was held in Dubrovnik (Croatia) on June 29th, 2012, affiliated to Twenty-Seventh Annual ACM/IEEE Symposium on Logic in Computer Science (LICS 2012). The ITRS workshop aims to bring together researchers working on both the theory and practical applications of systems based on intersection types and related approaches (e.g., union types, refinement types, behavioural ty...

  13. TCP over IEEE 802.11

    Directory of Open Access Journals (Sweden)

    P. Chenna Reddy

    2009-01-01

    Full Text Available IEEE 802.11 is a widely used wireless LAN standard for medium access control. TCP is a prominent transport protocol originally designed for wired networks. TCP treats packet loss as congestion and reduces the data rate. In wireless networks packets are lost not only due to congestion but also due to various other reasons. Hence there is need for making TCP adaptable to wireless networks. Various parameters of TCP and IEEE 802.11 can be set to appropriate values to achieve optimum performance results. In this paper optimum values for various parameters of IEEE 802.11 are determined. Network simulator NS2 is used for simulation.

  14. Proceedings of the IEEE Machine Learning for Signal Processing XVII

    DEFF Research Database (Denmark)

    , and two papers from the winners of the Data Analysis Competition. The program included papers in the following areas: genomic signal processing, pattern recognition and classification, image and video processing, blind signal processing, models, learning algorithms, and applications of machine learning......The seventeenth of a series of workshops sponsored by the IEEE Signal Processing Society and organized by the Machine Learning for Signal Processing Technical Committee (MLSP-TC). The field of machine learning has matured considerably in both methodology and real-world application domains and has....... The program featured a Special Session on Genomic Signal Processing, chaired by Prof. Man-Wai Mak from Hong Kong Polytechnic University, Hong Kong. The session included four refereed papers by leading experts in the field. We also continued the tradition of the Data Analysis Competition thanks to the efforts...

  15. CERN receives prestigious Milestone recognition from IEEE

    CERN Multimedia

    2005-01-01

    At a ceremony at CERN, Mr W. Cleon Anderson, President of the Institute of Electrical and Electronics Engineers (IEEE) formally a Milestone plaque in recognition of the invention of electronic particle detectors at CERN

  16. IEEE International Symposium on Biomedical Imaging.

    Science.gov (United States)

    2017-01-01

    The IEEE International Symposium on Biomedical Imaging (ISBI) is a scientific conference dedicated to mathematical, algorithmic, and computational aspects of biological and biomedical imaging, across all scales of observation. It fosters knowledge transfer among different imaging communities and contributes to an integrative approach to biomedical imaging. ISBI is a joint initiative from the IEEE Signal Processing Society (SPS) and the IEEE Engineering in Medicine and Biology Society (EMBS). The 2018 meeting will include tutorials, and a scientific program composed of plenary talks, invited special sessions, challenges, as well as oral and poster presentations of peer-reviewed papers. High-quality papers are requested containing original contributions to the topics of interest including image formation and reconstruction, computational and statistical image processing and analysis, dynamic imaging, visualization, image quality assessment, and physical, biological, and statistical modeling. Accepted 4-page regular papers will be published in the symposium proceedings published by IEEE and included in IEEE Xplore. To encourage attendance by a broader audience of imaging scientists and offer additional presentation opportunities, ISBI 2018 will continue to have a second track featuring posters selected from 1-page abstract submissions without subsequent archival publication.

  17. CERN receives prestigious Milestone recognition from IEEE

    CERN Multimedia

    2005-01-01

    The Nobel prize winner Georges Charpak and W. Cleon Anderson, IEEE President, unveil the Milestone bronze plaques. At a ceremony on 26 September at the Globe of Science and Innovation, Mr W. Cleon Anderson, President of the Institute of Electrical and Electronics Engineers (IEEE) formally dedicated Milestone plaques recognising the invention of electronic particle detectors at CERN. The plaque were unveiled by Mr Anderson and Georges Charpak, the Nobel-prize winning inventor of wire chamber technology at CERN in 1968. The IEEE is the world's largest professional association dedicated to the advancement of technology with 365,000 individual members in over 150 countries. Established in 1983, there are currently over 60 Milestones around the world. They honour momentous achievements in the history of electrical and electronics engineering, such as the landing of the first transatlantic cable, code breaking at Bletchley Park during World War II, and the development of the Japanese Bullet train, the Tokaido Shin...

  18. Notice of Violation of IEEE Publication Principles

    DEFF Research Database (Denmark)

    Memon, Nasrullah; Qureshi, Abdul Rasool; Wiil, Uffe Kock

    2009-01-01

    Notice of Violation of IEEE Publication Principles "Novel Algorithms for Subgroup Detection in Terrorist Networks" by Nasrullah Memon, Abdul Rasool Qureshi, Uffe Kock Wiil, and David L. Hicks in the Proceedings of the 2009 International Conference on Availability, Reliability and Security, March...... 2009, pp. 572-577 After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles. This paper contains significant portions of original text from the papers cited below...... be made to the following articles: "Balancing Systematic and Flexible Exploration of Social Networks" by Adam Perer, Ben Shneiderman in the IEEE Transactions on Visualization and Computer Graphics, Vol. 12, No. 5 Sept/Oct 2006, pp. 693-700 "Mining for Offender Group Detection and Story of a Police...

  19. Editorial for IEEE Transactions on Power Electronics

    DEFF Research Database (Denmark)

    Blaabjerg, Frede

    2007-01-01

    Our IEEE transactions on power electronics has had some very positive progress these past years under the leadership of Dr. Daan van Wyk. Papers have been processed efficiently both in review time and publication time. This success has spread throughout the whole power electronics community which...

  20. Editorial for IEEE Transactions on Power Electronics

    DEFF Research Database (Denmark)

    Blaabjerg, Frede

    2007-01-01

    Our IEEE transactions on power electronics has had some very positive progress these past years under the leadership of Dr. Daan van Wyk. Papers have been processed efficiently both in review time and publication time. This success has spread throughout the whole power electronics community which...

  1. Risk Management Supplement to IEEE-15288.1

    Science.gov (United States)

    2015-05-15

    AND MISSILE SYSTEMS CENTER TAILORING RISK MANAGEMENT SUPPLEMENT TO IEEE -15288.1 APPROVED FOR PUBLIC RELEASE...IEC- IEEE -15288: 2015, SYSTEMS AND SOFTWARE ENGINEERING — SYSTEM LIFE CYCLE PROCESSES...1 2.2. IEEE -15288.1: 2015, STANDARD FOR APPLICATION OF SYSTEMS ENGINEERING ON DEFENSE PROGRAMS

  2. Impact of IEEE 1609.4 channel switching on the IEEE 802.11p beaconing performance

    NARCIS (Netherlands)

    Eenennaam, van Martijn; Venis, van de Anne; Karagiannis, Georgios

    2012-01-01

    The IEEE 802.11p Wireless Access in Vehicular Environment (WAVE) protocol can only transmit packets on one channel. To support multi-channel operations, channel switching procedures have been proposed in IEEE 1609.4. This paper provides an analysis of the beaconing performance of IEEE 802.11p when t

  3. INDICO Workshop

    CERN Document Server

    CERN. Geneva; Fabbrichesi, Marco

    2004-01-01

    The INtegrated DIgital COnferencing EU project has finished building a complete software solution to facilitate the MANAGEMENT OF CONFERENCES, workshops, schools or simple meetings from their announcement to their archival. Everybody involved in the organization of events is welcome to join this workshop, in order to understand the scope of the project and to see demonstrations of the various features.

  4. The fourth dimension

    CERN Document Server

    Rucker, Rudy

    2014-01-01

    ""This is an invigorating book, a short but spirited slalom for the mind."" - Timothy Ferris, The New York Times Book Review ""Highly readable. One is reminded of the breadth and depth of Hofstadter's Gödel, Escher, Bach."" - Science""Anyone with even a minimal interest in mathematics and fantasy will find The Fourth Dimension informative and mind-dazzling... [Rucker] plunges into spaces above three with a zest and energy that is breathtaking."" - Martin Gardner ""Those who think the fourth dimension is nothing but time should be encouraged to read The Fourth Dimension, along with anyone else

  5. Specialty Engineering Supplement to IEEE-15288.1

    Science.gov (United States)

    2015-05-15

    MISSILE SYSTEMS CENTER TAILORING SPECIALTY ENGINEERING SUPPLEMENT TO IEEE -15288.1 APPROVED FOR PUBLIC RELEASE; DISTRIBUTION...IS UNLIMITED 1 Tailoring of IEEE 15288.1: Specialty Engineering Supplement. 1. Intent of this Tailoring Document This tailoring document is...historically deemed valuable to mission assurance/success of high-reliability space systems. This tailoring document supplements IEEE 15288.1-2015 Annex E

  6. Virtual Workshop

    DEFF Research Database (Denmark)

    Buus, Lillian; Bygholm, Ann

    In relation to the Tutor course in the Mediterranean Virtual University (MVU) project, a virtual workshop “Getting experiences with different synchronous communication media, collaboration, and group work” was held with all partner institutions in January 2006. More than 25 key-tutors within MVU...... participated from different institutions in the workshop. The result of the workshop was experiences with different communication tools and media. Facing the difficulties and possibilities in collaborateting virtually concerned around group work and development of a shared presentation. All based on getting...... experiences for the learning design of MVU courses. The workshop intented to give the participants the possibility to draw their own experiences with issues on computer supported collaboration, group work in a virtual environment, synchronous and asynchronous communication media, and different perspectives...

  7. Workshop Proceedings

    DEFF Research Database (Denmark)

    2012-01-01

    , the main focus there is on spoken languages in their written and spoken forms. This series of workshops, however, offers a forum for researchers focussing on sign languages. For the third time, the workshop had sign language corpora as its main topic. This time, the focus was on the interaction between......This collection of papers stems from the Fifth Workshop on the Representation and Processing of Sign Languages, held in May 2012 as a satellite to the Language Resources and Evaluation Conference in Istanbul. While there has been occasional attention for sign languages at the main LREC conference...... corpus and lexicon. More than half of the papers presented contribute to this topic. Once again, the papers at this workshop clearly identify the potentials of even closer cooperation between sign linguists and sign language engineers, and we think it is events like this that contribute a lot to a better...

  8. IEEE北京分会召开IEEE Fellow座谈会并举力IEEE Fellow讲坐

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ 2006年8月29日下午,IEEE北京分会(Beijing Section),在中国科学院自动化研究所召开IEEE Fellow座谈会.座谈会的主要议题是如何发挥我国IEEE Fellow的作用.会议由IEEE北京分会现任主席谭铁牛博士(自动化研究所所长,IEEE Fellow)主持,他向到会的IEEE Fellow,介绍了IEEE北京分会2006-2007年度的工作计划设想.

  9. IEEE 802.11 ECG monitoring system.

    Science.gov (United States)

    Tejero-Calado, Juan; Lopez-Casado, Carmen; Bernal-Martin, Antonio; Lopez-Gomez, Miguel; Romero-Romero, Marco; Quesada, Guillermo; Lorca, Julio; Rivas, Ramon

    2005-01-01

    New wireless technologies make possible the implementation of high level integration wireless devices which allow the replacement of traditional large wired monitoring devices. This kind of devices favours at-home hospitalization, reducing the affluence to sanitary assistance centers to make routine controls. This fact causes a really favourable social impact, especially for elder people, rural-zone inhabitant, chronic patients and handicapped people. Furthermore, it offers new functionalities to physicians and will reduce the sanitary cost. Among these functionalities, biomedical signals can be sent to other devices (screen, PDA, PC...) or processing centers, without restricting the patients' mobility. The aim of this project is the development and implementation of a reduced size multi-channel electrocardiograph based on IEEE 802.11, which allows wireless monitoring of patients, and the insertion of the information into the TCP/IP Hospital network.

  10. 2012 IEEE Vehicular Networking Conference (VNC): Demo Summaries

    NARCIS (Netherlands)

    Altintas, Onur; Chen, Wai; Heijenk, Geert; Oh, Hyun Seo; Chung, Jong-Moon; Dressler, Falko; Kargl, Frank; Pau, Giovanni; Schoch, Elmar

    2012-01-01

    Preface Last year’s edition of IEEE VNC in Amsterdam included a very successful demonstration session in its program. Therefore, demonstrations are again part of the program of IEEE VNC 2012 in Seoul, Republic of Korea. Demonstrations play an important role to expose the research community to practi

  11. IEEE Standard Dictionary of Electrical and Electronics Terms.

    Science.gov (United States)

    Institute of Electrical and Electronics Engineers, Inc., New York, NY.

    This dictionary, prepared by the Institute of Electrical and Electronics Engineers, Inc. (IEEE), defines 13,000 technical words from every area of electrical and electronics engineering. The dictionary contains hundreds of new terms as well as revisions of earlier ones. Each definition is an official standard of IEEE. The definitions are arranged…

  12. IEEE Standard Dictionary of Electrical and Electronics Terms.

    Science.gov (United States)

    Institute of Electrical and Electronics Engineers, Inc., New York, NY.

    This dictionary, prepared by the Institute of Electrical and Electronics Engineers, Inc. (IEEE), defines 13,000 technical words from every area of electrical and electronics engineering. The dictionary contains hundreds of new terms as well as revisions of earlier ones. Each definition is an official standard of IEEE. The definitions are arranged…

  13. Performance comparison of IEEE 802.11g and IEEE 802.11n in the presence of interference from 802.15.4 networks

    OpenAIRE

    Masood, Syed Haani

    2013-01-01

    In this paper we compare the packet error rate (PER) and maximum throughput of IEEE 802.11n and IEEE 802.11g under interference from IEEE 802.15.4 by using MATLAB to simulate the IEEE PHY for 802.11n and 802.11g networks.

  14. Performance comparison of IEEE 802.11g and IEEE 802.11n in the presence of interference from 802.15.4 networks

    OpenAIRE

    Masood, Syed Haani

    2013-01-01

    In this paper we compare the packet error rate (PER) and maximum throughput of IEEE 802.11n and IEEE 802.11g under interference from IEEE 802.15.4 by using MATLAB to simulate the IEEE PHY for 802.11n and 802.11g networks.

  15. Active Channel Reservation for Coexistence Mechanism (ACROS) for IEEE 802.15.4 and IEEE 802.11

    Science.gov (United States)

    Shin, Soo Young; Woo, Dong Hyuk; Lee, Jong Wook; Park, Hong Seong; Kwon, Wook Hyun

    In this paper, a coexistence mechanism between IEEE 802.15.4 and IEEE 802.11b, Active Channel Reservation for cOexiStence (ACROS), is proposed. The key idea underlining ACROS is to reserve the channel for IEEE 802.15.4 transmission, where IEEE 802.11 transmissions are forbidden. The request-to-send (RTS)/clear-to send (CTS) mechanism within IEEE 802.11 is used to reserve a channel. The proposed ACROS mechanism is implemented into a PC based prototype. The embedded version of ACROS is also developed to mitigate the timing drift problem in the PC-based ACROS. The efficiency of ACROS is shown using the throughput and packet error rate achieved in actual experiments.

  16. Network workshop

    DEFF Research Database (Denmark)

    Bruun, Jesper; Evans, Robert Harry

    2014-01-01

    research community. With this workshop, participants were offered a way into network science based on authentic educational research data. The workshop was constructed as an inquiry lesson with emphasis on user autonomy. Learning activities had participants choose to work with one of two cases of networks......This paper describes the background for, realisation of and author reflections on a network workshop held at ESERA2013. As a new research area in science education, networks offer a unique opportunity to visualise and find patterns and relationships in complicated social or academic network data....... These include student relations and interactions and epistemic and linguistic networks of words, concepts and actions. Network methodology has already found use in science education research. However, while networks hold the potential for new insights, they have not yet found wide use in the science education...

  17. Network workshop

    DEFF Research Database (Denmark)

    Bruun, Jesper; Evans, Robert Harry

    2014-01-01

    This paper describes the background for, realisation of and author reflections on a network workshop held at ESERA2013. As a new research area in science education, networks offer a unique opportunity to visualise and find patterns and relationships in complicated social or academic network data....... These include student relations and interactions and epistemic and linguistic networks of words, concepts and actions. Network methodology has already found use in science education research. However, while networks hold the potential for new insights, they have not yet found wide use in the science education...... research community. With this workshop, participants were offered a way into network science based on authentic educational research data. The workshop was constructed as an inquiry lesson with emphasis on user autonomy. Learning activities had participants choose to work with one of two cases of networks...

  18. Poetry Workshop.

    Science.gov (United States)

    Janeczko, Paul B.

    2000-01-01

    This workshop offers activities to teach students about poetry. After describing haiku as a brief snapshot rather than a story, it explains how to teach poetry using an attached reproducible and poster. The tear-out reproducible sheet teaches students how to write their own haiku, offering a sample one as a model. The poster presents three sample…

  19. N Physics - Proceedings of the Fourth Cebaf/int Workshop

    Science.gov (United States)

    Lee, T.-S. H.; Roberts, W.

    1997-06-01

    The Table of Contents for the book is as follows: * Introduction * Preface * Baryons and QCD * Dispersion Relations in Pion Photoproduction * Reaction Theories for N* Excitations in πN and γN Reactions * The N* Physics Program: Where are We and Where are We Going? * Recent Calculations of Electromagnetic and Strong Decays of N* * Test of Constituent Quark Model in η and π Photoproduction * Baryon Current Matrix Elements in a Relativistic Quark Model * Light-Front Calculations of Electromagnetic Form Factors for N-N* Transitions * Open Problems in Hadronic Structure * The Role of Massive States in Chiral Perturbation Theory * Baryons in Chiral Constituent Quark Model * Delta Electroproduction in a Chiral Bag Model Approach * E2/M1 and C2/M1 in the Electroproduction of the Δ and the Chiral Quark Soliton Model * Monopole Excitations of Baryons in the NJL Soliton Model * Δ Photoproduction in Chiral Color Dielectric Model * Glueballs and Hybrids * Pion Photo-Production and the Off-Shell Behavior of the πN Interaction * Kaon Photoproduction on the Nucleon: Status and Future Prospects * Determination of N* Parameters in the Review of Particle Properties * N* Physics at the AGS with the Crystal Ball Multiphoton Spectrometer * Photoexcitation of the S11(1535)-Resonance on the Proton, on the Neutron, and in Nuclei * Measurement of the E2/M1 Ratio in the N → Δ Transition * Theory of Eta Photo- and Electroproduction * Vector Mesons Below 2 GeV * N* Resonances and 2π Production * A Model for Two-Pion Photoproduction Amplitudes * Negative Parity Baryons in the QCD Sum Rule * Meson Photoproductions Off Nucleons in the Chiral Quark Model * Unquenching the Quark Model * Spin Observables in Pseudoscalar Meson Photoproduction * Baryon Resonance Extraction from πN Data using a Multichannel Unitary Model * A Dispersion Theoretical Analysis of the E/M Ratio of the Δ(1232) Resonance * Meson Production Experiments at TJNAL and BNL * Opportunities for Polarization Physics with the Crystal Ball Detector * N*-Physics at COSY * List of Participants

  20. Application of IEEE 1588 in LXI testing system%LXI测试系统中IEEE 1588的应用

    Institute of Scientific and Technical Information of China (English)

    Bob Rennard; Agilent Technologies

    2009-01-01

    LXI联盟是主要测试和测量厂商的一个组织,负责开拓基于LAN通信和融合IEEE 1588的模块化、分布式的仪器体系结构.本文将概要说明与 IEEE 1588相关的LXI规范,以及如何在基于LXI测试和测最系统中用IEEE 1588建立时基.

  1. Combined Industry, Space and Earth Science Data Compression Workshop

    Science.gov (United States)

    Kiely, Aaron B. (Editor); Renner, Robert L. (Editor)

    1996-01-01

    The sixth annual Space and Earth Science Data Compression Workshop and the third annual Data Compression Industry Workshop were held as a single combined workshop. The workshop was held April 4, 1996 in Snowbird, Utah in conjunction with the 1996 IEEE Data Compression Conference, which was held at the same location March 31 - April 3, 1996. The Space and Earth Science Data Compression sessions seek to explore opportunities for data compression to enhance the collection, analysis, and retrieval of space and earth science data. Of particular interest is data compression research that is integrated into, or has the potential to be integrated into, a particular space or earth science data information system. Preference is given to data compression research that takes into account the scien- tist's data requirements, and the constraints imposed by the data collection, transmission, distribution and archival systems.

  2. 2001年IEEE MTT-S介绍

    Institute of Scientific and Technical Information of China (English)

    洪伟

    2001-01-01

    @@ 2001年IEEE微波理论与技术国际会议(IEEE MTT-S)于5月20~25日在美国的凤凰城(Phoenix) 召开.其中,20、21和25日安排的是专题讨论会(Workshops)等,22~24日为分组学术报告. 本次会议共收到学术论文930篇,其中学生投稿论文242篇,这两项都刷新了MTT-S的记录. 经过250位专家的评审,从中录用了511篇论文,录用率为55%.这些学术论文安排在22~24三天的65个分组内进行学术交流,其中除了论文宣读(presentation)之外还在每天的下午安排了论文张贴交流(interactive forum).根据当前的热门研究领域,会议安排了20个专题讨论会(Workshop)和5个短课程(Short courses).此外,针对一些浮现出来的技术领域还设了 5个焦点分组(Focused sessions)、4个专题讨论会(Panel sessions)和1个辩论会(Rump s ession).与MTT-S联合召开的还有射频集成电路(RFIC)和自动射频技术组(ARFTG: Automat ic RF Technology Group)两个专门会议.在会议期间还举办了规模巨大的微波工业展览, 有800多家公司参展,展出的产品涉及微波毫米波元器件、模块、系统、芯片、测量设备、加工设备、设计软件等等.下面就这次会议的主要内容作简要介绍.一、分组学术交流 (Technique Sessions) 学术论文分65个组(Sessions)进行交流,内容涉及电磁场边值问题的分析方法、微波传输线与无源元件、封装与互连技术、非线性分析、微波有源器件、天线、智能天线、通信系统、卫星互连网、微波生物效应与医学应用、微波超导等.

  3. 22nd Italian Workshop on Neural Nets

    CERN Document Server

    Bassis, Simone; Esposito, Anna; Morabito, Francesco

    2013-01-01

    This volume collects a selection of contributions which has been presented at the 22nd Italian Workshop on Neural Networks, the yearly meeting of the Italian Society for Neural Networks (SIREN). The conference was held in Italy, Vietri sul Mare (Salerno), during May 17-19, 2012. The annual meeting of SIREN is sponsored by International Neural Network Society (INNS), European Neural Network Society (ENNS) and IEEE Computational Intelligence Society (CIS). The book – as well as the workshop-  is organized in three main components, two special sessions and a group of regular sessions featuring different aspects and point of views of artificial neural networks and natural intelligence, also including applications of present compelling interest.

  4. A COMPARISON OF IMPROVED AODV ROUTING PROTOCOL BASED ON IEEE 802.11 AND IEEE 802.15.4

    OpenAIRE

    2009-01-01

    Recently, wireless network industry for the ubiquitous generation is growing quickly. Especially, IEEE 802.15.4 is one of special issues of the networking technology for sensor network. Then, many researchers are studying it for enhanced performance. But many researchers are not focusing on developing routing protocol. So we had proposed improved AODV routing protocol in previous research. But it had studied about performance analysis based on IEEE 802.11. In this paper, we proposed improved ...

  5. Photovoltaic performance and reliability workshop

    Energy Technology Data Exchange (ETDEWEB)

    Kroposki, B

    1996-10-01

    This proceedings is the compilation of papers presented at the ninth PV Performance and Reliability Workshop held at the Sheraton Denver West Hotel on September 4--6, 1996. This years workshop included presentations from 25 speakers and had over 100 attendees. All of the presentations that were given are included in this proceedings. Topics of the papers included: defining service lifetime and developing models for PV module lifetime; examining and determining failure and degradation mechanisms in PV modules; combining IEEE/IEC/UL testing procedures; AC module performance and reliability testing; inverter reliability/qualification testing; standardization of utility interconnect requirements for PV systems; need activities to separate variables by testing individual components of PV systems (e.g. cells, modules, batteries, inverters,charge controllers) for individual reliability and then test them in actual system configurations; more results reported from field experience on modules, inverters, batteries, and charge controllers from field deployed PV systems; and system certification and standardized testing for stand-alone and grid-tied systems.

  6. Delay Analysis of GTS Bridging between IEEE 802.15.4 and IEEE 802.11 Networks for Healthcare Applications.

    Science.gov (United States)

    Misić, Jelena; Sherman Shen, Xuemin

    2009-01-01

    We consider interconnection of IEEE 802.15.4 beacon-enabled network cluster with IEEE 802.11b network. This scenario is important in healthcare applications where IEEE 802.15.4 nodes comprise patient's body area network (BAN) and are involved in sensing some health-related data. BAN nodes have very short communication range in order to avoid harming patient's health and save energy. Sensed data needs to be transmitted to an access point in the ward room using wireless technology with higher transmission range and rate such as IEEE 802.11b. We model the interconnected network where IEEE 802.15.4-based BAN operates in guaranteed time slot (GTS) mode, and IEEE 802.11b part of the bridge conveys GTS superframe to the 802.11b access point. We then analyze the network delays. Performance analysis is performed using EKG traffic from continuous telemetry, and we discuss the delays of communication due the increasing number of patients.

  7. Simulasi Kinerja Jaringan Nirkabel IEEE-802.11a dan IEEE-802.11g Menggunakan NS-2

    Directory of Open Access Journals (Sweden)

    Helm Fitriawan

    2014-03-01

    Full Text Available Wireless network uses transmission media based on radio waves. This type of networks is mainly useddue to its efficiency and mobility in data exchanging. This paper reports the modeling and simulation of wirelessnetworks based on Cisco Aironet 1130ag access point devices with IEEE 802.11a and IEEE 802.11g standards. Themodeling and simulation are performed using network simulator version 2 (NS-2 that is installed on operationsystem Linux Ubuntu v.10.10. The NS-2 is commonly used and works well in numerous types of network simulation. From simulation, we obtain quality of service parameters by employing several simulation scenarios in terms ofnumber of nodes, distances, and packet data sizes. It can be concluded from simulation results that the IEEE 802.11gnetworks transfer data with better quality than those of IEEE 802.11a networks.  Furthermore, the IEEE 802.11gnetworks provide a higher throughput, with smaller amount of delay and packet loss percentage compared to thoseof IEEE 802.11a networks.

  8. National stakeholder workshop summary report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-06-01

    This is a summary of the plenary sessions and small group discussion sessions from the fourth National Stakeholder Workshop sponsored by the DOE Office of Worker and Community Transition held in Atlanta, Georgia on March 13--15, 1996. Topics of the sessions included work force planning and restructuring, worker participation in health and safety, review of actions and commitments, lessons learned in collective bargaining agreements, work force restructuring guidance, work force planning, update on community transition activities. Also included are appendices listing the participants and DOE contacts.

  9. Creating Fantastic PI Workshops

    Energy Technology Data Exchange (ETDEWEB)

    Biedermann, Laura B. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Clark, Blythe G. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Colbert, Rachel S. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Dagel, Amber Lynn [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Gupta, Vipin P. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Hibbs, Michael R. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Perkins, David Nikolaus [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); West, Roger Derek [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-10-01

    The goal of this SAND report is to provide guidance for other groups hosting workshops and peerto-peer learning events at Sandia. Thus this SAND report provides detail about our team structure, how we brainstormed workshop topics and developed the workshop structure. A Workshop “Nuts and Bolts” section provides our timeline and check-list for workshop activities. The survey section provides examples of the questions we asked and how we adapted the workshop in response to the feedback.

  10. Workshop experience

    Directory of Open Access Journals (Sweden)

    Georgina Holt

    2007-04-01

    Full Text Available The setting for the workshop was a heady mix of history, multiculturalism and picturesque riverscapes. Within the group there was, as in many food studies, a preponderance of female scientists (or ethnographers, but the group interacted on lively, non-gendered terms - focusing instead on an appreciation of locals food and enthusiasm for research shared by all, and points of theoretical variance within that.The food provided by our hosts was of the very highest eating and local food qualities...

  11. A Kennedy Space Center implementation of IEEE 1451

    Science.gov (United States)

    Oostdyk, Rebecca L.; Mata, Carlos T.; Perotti, José M.; Lucena, Angel R.; Mullenix, Pamela A.

    2006-05-01

    To meet the demand for more reliable sensory data, longer sensor calibration cycles, and more useful information for operators at NASA's Kennedy Space Center (KSC), NASA's Instrumentation Branch and ASRC's Advanced Electronics and Technology Development Laboratory at the KSC are developing custom intelligent sensors based on the IEEE 1451 family of smart-sensor standards. The KSC intelligent sensors are known as Smart Networked Elements (SNEs), and each SNE includes transducers and their associated Transducer Electronic Data Sheets (TEDS), signal conditioning, analog-to-digital conversion, software algorithms for performing health checks on the data, and a network connection for sending data to other SNEs and higher-level systems. The development of the SNE has led to the definition of custom architectures, protocols, IEEE 1451 implementations, and TEDS, which are presented in this paper. The IEEE 1451 standards describe the architecture, message formats, software objects, and communication protocols within the smart sensor. Because of the standard's complexity, KSC has simplified the IEEE 1451 architecture and narrowed the scope of software objects to be included in the SNE to create a "light" IEEE 1451 implementation, and has used the manufacturer-defined TEDS to customize the SNE with health indicators. Furthermore, KSC has developed a protocol that allows the SNEs to communicate over an Ethernet network while reducing bandwidth requirements.

  12. Recent Workshops

    CERN Multimedia

    Wickens, F. J.

    Since the previous edition of ATLAS e-news, the NIKHEF Institute in Amsterdam has hosted not just one but two workshops related to ATLAS TDAQ activities. The first in October was dedicated to the Detector Control System (DCS). Just three institutes, CERN, NIKHEF and St Petersburg, provide the effort for the central DCS services, but each ATLAS sub-detector provides effort for their own controls. Some 30 people attended, including representatives for all of the ATLAS sub-detectors, representatives of the institutes working on the central services and the project leader of JCOP, which brings together common aspects of detector controls across the LHC experiments. During the three-day workshop the common components were discussed, and each sub-detector described their experiences and plans for their future systems. Whilst many of the components to be used are standard commercial components, a key custom item for ATLAS is the ELMB (Embedded Local Monitor Board). Prototypes for this have now been extensively test...

  13. Implicit Block ACK Scheme for IEEE 802.11 WLANs

    Science.gov (United States)

    Sthapit, Pranesh; Pyun, Jae-Young

    2016-01-01

    The throughput of IEEE 802.11 standard is significantly bounded by the associated Medium Access Control (MAC) overhead. Because of the overhead, an upper limit exists for throughput, which is bounded, including situations where data rates are extremely high. Therefore, an overhead reduction is necessary to achieve higher throughput. The IEEE 802.11e amendment introduced the block ACK mechanism, to reduce the number of control messages in MAC. Although the block ACK scheme greatly reduces overhead, further improvements are possible. In this letter, we propose an implicit block ACK method that further reduces the overhead associated with IEEE 802.11e’s block ACK scheme. The mathematical analysis results are presented for both the original protocol and the proposed scheme. A performance improvement of greater than 10% was achieved with the proposed implementation.

  14. Third International Workshop on Squeezed States and Uncertainty Relations

    Science.gov (United States)

    Han, D. (Editor); Kim, Y. S. (Editor); Rubin, Morton H. (Editor); Shih, Yan-Hua (Editor); Zachary, Woodford W. (Editor)

    1994-01-01

    The purpose of these workshops is to bring together an international selection of scientists to discuss the latest developments in Squeezed States in various branches of physics, and in the understanding of the foundations of quantum mechanics. At the third workshop, special attention was given to the influence that quantum optics is having on our understanding of quantum measurement theory. The fourth meeting in this series will be held in the People's Republic of China.

  15. New IEEE standard enables data collection for medical applications.

    Science.gov (United States)

    Kennelly, R J; Wittenber, J

    1994-01-01

    The IEEE has gone to ballot on a "Standard for Medical Device Communications", IEEE P1073. The lower layer, hardware portions of the standard are expected to be approved by the IEEE Standards Board at their December 11-13, 1994 meeting. Other portions of the standard are in the initial stages of the IEEE ballot process. The intent of the standard is to allow hospitals and other users to interface medical electronic devices to host computer systems in a standard, interchangeable manner. The standard is optimized for acute care environments such as ICU's, operating rooms, and emergency rooms. [1] IEEE General Committee and Subcommittee work has been on-going since 1984. Significant amounts of work have been done to discover and meet the needs of the patient care setting. Surveys performed in 1989 identified the following four key user requirements for medical device communications: 1) Frequent reconfiguration of the network. 2) Allow "plug and play" operation by users. 3) Associate devices with a specific bed and patient. 4) Support a wide range of hospital computer system topologies. Additionally, the most critical difference in the acute care setting is patient safety, which has an overall effect on the standard. The standard that went to ballot meets these requirements. The standard is based on existing ISO standards. P1073 is compliant with the OSI seven layer model. P1073 specifies the entire communication stack, from object-oriented software to hospital unique connectors. The standard will be able to be put forward as a true international standard, much in the way that the IEEE 802.x family of standards (like Ethernet) were presented as draft ISO standards.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. System Behavior Specification Using IEEE Std 1175.4

    Science.gov (United States)

    2010-04-27

    22nd Annual Systems & Software Technology Conference S stem Beha ior Specification1 7 y v Using IEEE Std 1175.4 e v i e w 5 2 8 1 2 R 27 April...DATE 27 APR 2010 2. REPORT TYPE 3. DATES COVERED 00-00-2010 to 00-00-2010 4. TITLE AND SUBTITLE System Behavior Specification Using IEEE Std ...RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE unclassified Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std

  17. IEEE 802.15.4 Modifications and Their Impact

    Directory of Open Access Journals (Sweden)

    M. Goyal

    2011-01-01

    Full Text Available IEEE 802.15.4 is a popular choice for MAC/PHY protocols in low power and low data rate wireless sensor networks. In this paper, we suggest several modifications to beaconless IEEE 802.15.4 MAC operation and evaluate their impact on the performance via stochastic modeling and simulations. We found that the utility of these modifications is strongly dependent on the traffic load on the network. Accordingly, we make recommendations regarding how these modifications should be used in view of the prevalent traffic load on the network.

  18. IEEE prize awarded to CERN PhD student

    CERN Multimedia

    2006-01-01

    Rafael Ballabriga Suñe is the recipient of the 2006 Institute of Electrical and Electronics Engineers, Inc. (IEEE) Nuclear and Plasma Sciences Society (NPSS)'s Student Paper Award. Ballabriga's winning paper reported on a prototype chip, which belongs to a new generation of single photon counting hybrid pixel detector readout chips - Medipix3. The award was presented by the deputy programme chair Vince Cianciolo (left) at the IEEE Nuclear Science Symposium held in San Diego on 29 October to 4 November.

  19. Research on IEEE 802.11 wireless local area networks standards%IEEE802.11无线局域网标准研究

    Institute of Scientific and Technical Information of China (English)

    李浩; 高泽华; 高峰; 赵荣华

    2009-01-01

    介绍了IEEE 802.11全系列标准,研究了IEEE 802.11系列各标准的发展轨迹和相互关系,建立了该系列标准的层次模型.研究并分析了IEEE 802.11、IEEE 802.11a、IEEE 802.11b、IEEE 802.11g和IEEE 802.11n这几种常见标准,并对相应物理层和媒质访问控制层的关键技术作了重点分析.

  20. MICCAI Workshops

    CERN Document Server

    Nedjati-Gilani, Gemma; Venkataraman, Archana; O'Donnell, Lauren; Panagiotaki, Eleftheria

    2014-01-01

    This volume contains the proceedings from two closely related workshops: Computational Diffusion MRI (CDMRI’13) and Mathematical Methods from Brain Connectivity (MMBC’13), held under the auspices of the 16th International Conference on Medical Image Computing and Computer Assisted Intervention, which took place in Nagoya, Japan, September 2013. Inside, readers will find contributions ranging from mathematical foundations and novel methods for the validation of inferring large-scale connectivity from neuroimaging data to the statistical analysis of the data, accelerated methods for data acquisition, and the most recent developments on mathematical diffusion modeling. This volume offers a valuable starting point for anyone interested in learning computational diffusion MRI and mathematical methods for brain connectivity as well as offers new perspectives and insights on current research challenges for those currently in the field. It will be of interest to researchers and practitioners in computer science, ...

  1. SIAM Workshop: Focus on Diversity

    Energy Technology Data Exchange (ETDEWEB)

    None

    2000-07-12

    The Fourth SlAM Graduate Student Focus on Diversity workshop was held on July 12, 2000 at the Westin Rio Mar Hotel in Rio Grande, Puerto Rico. The Department of Energy provided partial support for this event. The day-long workshop consisted of several different activities. The meeting opened with a discussion of some data collected by the American Mathematical Society on Ph.D.'s awarded in the U.S. to citizens and non-citizens, further classified as blacks, latinos, asians and native americans. The activity continued with nine technical talks by underrepresented minority graduate students, informal luncheon and pizza breaks to foster social interaction, and an evening forum chaired by Dr. Richard Tapia (Rice University) in which issues related to the participation of minorities in national meetings and proposal writing where discussed. These sessions were open to the entire SIAM community and served to highlight the progress, achievements, and aspirations of the workshop participants. The students attended as well the three SlAM plenary talks during the day and the community lecture in the evening. The activity had a lively participation of students and representatives from various academic institutions and sponsoring agencies. In particular, we had the participation of 24 undergraduate students from the Mathematics REU program of the University of Puerto Rico at Humacao.

  2. 适用于数字化变电站的IEEE1588测试仪的研制%Development of IEEE1588 tester for digital substation

    Institute of Scientific and Technical Information of China (English)

    陈炯聪; 崔全胜; 魏勇; 郑运召

    2012-01-01

    According to IEEE 1588 protocol testing requirements in digital substation, a development scheme of IEEE1588 tester for digital substation is proposed. The scheme analyzes the IEEE1588 tester's system functional requirements, introduces its hardware & software design, and studies the control mode of test cases and test automation implementation. Using the closed loop test system, IEEE1588 conformance testing of intelligent devices in digital substation can be achieved. The practical testing application shows that the tester can correctly perform real-time closed-loop IEEE] 588 conformance testing of intelligent devices, can significantly improve the testing efficiency of IEEE1588 protocol, so it can ensure the accuracy and reliability of IEEE1588 protocol implementation of intelligent devices.%针对数字化变电站中智能设备的IEEE1588协议测试需求,提出了一种适用于数字化变电站的IEEE1588测试仪的研制方案.该方案分析了IEEE1588测试仪的系统功能要求、介绍了其硬件及软件设计,并研究了测试案例控制模式和测试自动化实现.利用该测试仪构成的闭环测试系统,可以实现数字化变电站中智能设备的IEEE1588协议一致性测试.实际应用效果表明该测试仪能正确完成智能设备的IEEE1588协议实时闭环测试,可显著提高智能设备IEEE1588协议测试效率,确保智能设备IEEE1588协议实现的正确性和可靠性.

  3. 基于IEEE1149.1及IEEE1149.4标准的测试技术研究%Study of test techniques based on IEEE1149.1 and IEEE1149.4

    Institute of Scientific and Technical Information of China (English)

    苏波

    2012-01-01

    With rapid development of electronic technology, the integrated degree of circuits has greatly increased) more and more problems have to be faced in the field of test. The technology of DFT( design for testability) is one of the key solutions to deal with the problems of test. And the boundary-scan technology is a kind of the DFT methods, which is used widely. With intensive study on IEEE std 1149. 4 and IEEE std 1149.1 .this paper explores the testability structure based on boundary-scan,the result of the paper has important theory value and practical significance.%随着电子技术的飞速发展,电路的集成度越来越高,使其测试面临越来越多的问题.可测性设计成为解决测试问题的主要手段之一,而边界扫描技术是众多可测性设计方法中使用较为广泛的一种.在深入研究IEEE1149.1及IEEE1149.4标准的基础上,对基于边界扫描可测性结构进行了探索,具有重要的理论价值和实际意义.

  4. Local Positioning Services on IEEE 802.11 Networks

    Directory of Open Access Journals (Sweden)

    A. M. Vegni

    2008-06-01

    Full Text Available This paper deals with localization services in IEEE 802.11 networks, for indoor environment. The proposed solution processes the Time Of Arrival of location packets sent by a Mobile Terminal, that makes access in a IEEE 802.11 network. A set of Location Supporting Nodes and a Location Support Server composes an indoor location services architecture. A fully compatible IEEE 802.11 Localization Services protocol supporting data exchange related to both TOA measurement and processing is reported. Simulation results show the method efficiency in both IEEE 802.11 PCF and DCF modes. Assessment of the maximum number of users for which location services can be provided is also reported. Since high localization accuracy requires large bandwidth, a broadband antenna for LSN and LSS was designed. The related results are reported in the second part of the paper. The antenna works at 5.0 GHz (centre frequency in broadband mode and is matched on the wireless operating frequencies with a percentage more than 8% (1:1.5 VSWR.

  5. Specialty and Systems Engineering Supplement to IEEE 15288.1

    Science.gov (United States)

    2017-08-28

    15288.1 Tailoring Language ............................................................................ 2 3.2.1 Specialty Engineering Analysis and...believed necessary to maintain the level or rigor required by national security space acquisitions . 2. Context IEEE-15288.1: 2014, Standard for...be: 1. Normative (requirements rather than informative guidance), 2. Tailored appropriately for specific acquisition /contract considerations, and 3

  6. Editorial for IEEE Transactions on Power Electronics, January 2013

    DEFF Research Database (Denmark)

    Blaabjerg, Frede; Lehman, Brad

    2013-01-01

    should increase the impact factor of the IEEE TRANSACTIONS ON POWER ELECTRONICS (TPEL). In 2007, TPEL published 2600 pages, and it has gradually been increased to 4000 pages in 2011, 5000 pages in 2012, and 5500 pages are projected for 2013. We have decided to publish 12 printed issues so every month...

  7. Eleanor McElwee and the Formation of IEEE PCS

    Science.gov (United States)

    Malone, Edward A.

    2015-01-01

    This article examines the historical professional project that created the Institute of Radio Engineers' Professional Group on Engineering Writing an Speech (IRE PGEWS)--now called the Institute of Electrical and Electronics Engineers' Professional Communication Society (IEEE PCS)--and recounts the group's early history in detail. It also traces…

  8. Eleanor McElwee and the Formation of IEEE PCS

    Science.gov (United States)

    Malone, Edward A.

    2015-01-01

    This article examines the historical professional project that created the Institute of Radio Engineers' Professional Group on Engineering Writing an Speech (IRE PGEWS)--now called the Institute of Electrical and Electronics Engineers' Professional Communication Society (IEEE PCS)--and recounts the group's early history in detail. It also traces…

  9. A timed verification of the IEEE 1394 leader election protocol

    NARCIS (Netherlands)

    Romijn, J.M.T.

    1999-01-01

    The IEEE 1394 architecture standard defines a high performance serial multimedia bus that allows several components in a network to communicate with each other at high speed. In the physical layer of the architecture, a leader election protocol is used to find a spanning tree with a unique root in t

  10. Photovoltaic module reliability workshop

    Energy Technology Data Exchange (ETDEWEB)

    Mrig, L. (ed.)

    1990-01-01

    The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

  11. Symmetries In Graphs, Maps, And Polytopes Workshop 2014

    CERN Document Server

    Jajcay, Robert

    2016-01-01

    This volume contains seventeen of the best papers delivered at the SIGMAP Workshop 2014, representing the most recent advances in the field of symmetries of discrete objects and structures, with a particular emphasis on connections between maps, Riemann surfaces and dessins d’enfant. Providing the global community of researchers in the field with the opportunity to gather, converse and present their newest findings and advances, the Symmetries In Graphs, Maps, and Polytopes Workshop 2014 was the fifth in a series of workshops. The initial workshop, organized by Steve Wilson in Flagstaff, Arizona, in 1998, was followed in 2002 and 2006 by two meetings held in Aveiro, Portugal, organized by Antonio Breda d’Azevedo, and a fourth workshop held in Oaxaca, Mexico, organized by Isabel Hubard in 2010. This book should appeal to both specialists and those seeking a broad overview of what is happening in the area of symmetries of discrete objects and structures.

  12. Proceedings of the 1993 Complex Systems Engineering Synthesis and Assessment Technology Workshop (CSESAW 󈨡)

    Science.gov (United States)

    1993-10-17

    England, August 28-30), IEEE, Piscat - tion Model Specification Language," (in prepara- away, New Jersey, pp. 386-391. tion). Beane, J, N. Giddings and... Piscat - CON 1989 (Dayton, Ohio, May 22-26),, Piscat - away, NJ, pp. 305-311. away, NJ, pp. 500-507. Bryan, W.L. and S.G. Siegel (1984), "Product As- Far...Symposium Third International Workshop on Software Spec- (Gaithersburg, MD, Dec. 12-14), IEEE, Piscat - ification and Design (London, England, August away

  13. Enhancing MAC performance of DCF protocol for IEEE 802.11 wireless LANs

    National Research Council Canada - National Science Library

    Woo-Yong Choi

    2017-01-01

    ...) protocol of IEEE 802.11 wireless LANs and compatible with various IEEE 802.11 PHY extensions. The performance of the DCF degrades exponentially as the number of nodes participating in the DCF transmission procedure increases...

  14. Fourth Order Theories Without Ghosts

    CERN Document Server

    Mannheim, P D; Mannheim, Philip D.; Davidson, Aharon

    2000-01-01

    Using the Dirac constraint method we show that the pure fourth-order Pais-Uhlenbeck oscillator model is free of observable negative norm states. Even though such ghosts do appear when the fourth order theory is coupled to a second order one, the limit in which the second order action is switched off is found to be a highly singular one in which these states move off shell. Given this result, construction of a fully unitary, renormalizable, gravitational theory based on a purely fourth order action in 4 dimensions now appears feasible.

  15. Fourth Light at Paranal!

    Science.gov (United States)

    2000-09-01

    VLT YEPUN Joins ANTU, KUEYEN and MELIPAL It was a historical moment last night (September 3 - 4, 2000) in the VLT Control Room at the Paranal Observatory , after nearly 15 years of hard work. Finally, four teams of astronomers and engineers were sitting at the terminals - and each team with access to an 8.2-m telescope! From now on, the powerful "Paranal Quartet" will be observing night after night, with a combined mirror surface of more than 210 m 2. And beginning next year, some of them will be linked to form part of the unique VLT Interferometer with unparalleled sensitivity and image sharpness. YEPUN "First Light" Early in the evening, the fourth 8.2-m Unit Telescope, YEPUN , was pointed to the sky for the first time and successfully achieved "First Light". Following a few technical exposures, a series of "first light" photos was made of several astronomical objects with the VLT Test Camera. This instrument was also used for the three previous "First Light" events for ANTU ( May 1998 ), KUEYEN ( March 1999 ) and MELIPAL ( January 2000 ). These images served to evaluate provisionally the performance of the new telescope, mainly in terms of mechanical and optical quality. The ESO staff were very pleased with the results and pronounced YEPUN fit for the subsequent commissioning phase. When the name YEPUN was first given to the fourth VLT Unit Telescope, it was supposed to mean "Sirius" in the Mapuche language. However, doubts have since arisen about this translation and a detailed investigation now indicates that the correct meaning is "Venus" (as the Evening Star). For a detailed explanation, please consult the essay On the Meaning of "YEPUN" , now available at the ESO website. The first images At 21:39 hrs local time (01:39 UT), YEPUN was turned to point in the direction of a dense Milky Way field, near the border between the constellations Sagitta (The Arrow) and Aquila (The Eagle). A guide star was acquired and the active optics system quickly optimized the

  16. IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE 15-20 OCTOBER 2000 PALAIS DES CONGRES, LYON, FRANCE

    CERN Multimedia

    2000-01-01

    The IEEE NSS & MIC will be held this year in Europe for the first time in its more than 40 year history. Some 280 oral and 400 poster presentations on radiation detectors, instrumentation and imaging will be given over the five days of the conferences. In addition there is a rich programme of keynote talks, topical workshops, short courses and an industrial exhibition with more than 50 exhibitors. SHORT COURSES Following a long and successful tradition, several tutorial short courses, delivered by known experts in the specific fields, are being offered to registered students. There are still places available to attend the courses on Solid State Detectors, Particle Identification and Detectors for Astrophysics. These intensive one-day tutorials will be given on Sunday October 15. Full details and registration information can be found on the conference web site or from the Short Courses Organiser, Fabio Sauli, CERN. A limited amount of financial support is available for motivated scholars who may not ot...

  17. Workshops as a Research Methodology

    Science.gov (United States)

    Ørngreen, Rikke; Levinsen, Karin

    2017-01-01

    This paper contributes to knowledge on workshops as a research methodology, and specifically on how such workshops pertain to e-learning. A literature review illustrated that workshops are discussed according to three different perspectives: workshops as a means, workshops as practice, and workshops as a research methodology. Focusing primarily on…

  18. IPHE Infrastructure Workshop Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    None

    2010-02-01

    This proceedings contains information from the IPHE Infrastructure Workshop, a two-day interactive workshop held on February 25-26, 2010, to explore the market implementation needs for hydrogen fueling station development.

  19. Approximation of the IEEE 802.11p standard using commercial off-the-shelf IEEE 802.11a hardware

    OpenAIRE

    2011-01-01

    IEEE 802.11p hardware is hard to find. Previous research efforts often relied on project-specific prototype implementations which are characterized by a high cost and are not always available to the entire research community. Commercially available turnkey implementations are rare and quite expensive compared to commercial of-the-shelf (COTS) IEEE 802.11a/b/g hardware. However, the difference between the IEEE 802.11p amendment and the other IEEE 802.11 standards is quite small. It can be seen...

  20. RATE ADAPTIVE PROTOCOL FOR MULTIRATE IEEE 802.11 NETWORKS

    Institute of Scientific and Technical Information of China (English)

    Xi Yong; Huang Qingyan; Wei Jibo; Zhao Haitao

    2007-01-01

    In this paper,a rate adaptive protocol AMARF(Adaptive Multirate Auto Rate Fallback)for multirate IEEE 802.11 networks is proposed.In AMARF,each data rate is assigned a unique success threshold,which is a criterion to judge when to switch a rate to the next higher one,and the success thresholds call be adjusted dynamically in an adaptive manner according to the running conditions,such as packet length and channel parameters.Moreover,the proposed protocol can be implemented by software without any change to the current IEEE 802.11 standards.Simulation result shows that AMARF yields significantly higher throughput than other existing schemes including ARF and its variants,in various running conditions.

  1. Performance analysis of IEEE 802.11 DCF networks

    Institute of Scientific and Technical Information of China (English)

    Krzysztof SZCZYPIORSKI; Jázef LUBZCZ

    2008-01-01

    This paper presents an analytical saturation throughput model of IEEE 802.11DCF (distributed coordination function)with basic access in ad hoc mode. The model takes into account freezing of the backoff timer when a station senses busy channel.It is shown that taking into account this feature of DCF is important in modeling saturation throughput by yielding more accurate and realistic results than models known from literature. The proposed analytical model also takes into account the effect of transmission errors. All essential features of the proposed analytical approach are illustrated with numerical results. The presen-tation of the model is proceeded by an overview of approaches to IEEE 802.11 network performance evaluation presented in the literature.

  2. Avago首席科学家荣获IEEE Fellow奖

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Avago Technologies(安华高科技)宣布John Larson Ⅲ博士在英国哥伦比亚范库弗峰州举办的2006年国际超声波研讨会上荣获知名的IEEE Fellow奖。IEEE Fellow奖由专业人员提名产生,旨在表彰在各个工程设计领域中取得杰出成绩的人才。Avago Technologies(安华高科技)是为先进的通信、工业和商业等应用领域提供创新的半导体解决方案的领导厂商。

  3. IEEE prize awarded to CERN PhD student

    CERN Multimedia

    2006-01-01

    Rafael Ballabriga Suñe (right) receives the Student Paper Award. Rafael Ballabriga Suñe is the recipient of the 2006 Institute of Electrical and Electronics Engineers, Inc. (IEEE) Nuclear and Plasma Sciences Society (NPSS)'s Student Paper Award. Ballabriga's winning paper reported on a prototype chip, which belongs to a new generation of single photon counting hybrid pixel detector readout chips - Medipix3. The NPSS established this award in 2005 to encourage outstanding student contributions and greater student participation as principle or sole authors of papers. The prizes were presented at the IEEE Nuclear Science Symposium held in San Diego on 29 October to 4 November. The prototype chip was designed by Ballabriga based on ideas generated within the CERN Medipix team - part of the PH Microelectronics group. It could be used in various fields in the future, including medical imaging, neutron imaging, electron microscopy, radiation monitoring and other applications in high-energy physics. The novel aspe...

  4. Interoperability in wireless sensor networks based on IEEE 1451 standard

    OpenAIRE

    Higuera Portilla, Jorge Eduardo; Polo Cantero, José

    2012-01-01

    The syntactic and semantic interoperability is a challenge of the Wireless Sensor Networks (WSN) with smart sensors in pervasive computing environments to increase their harmonization in a wide variety of applications. This chapter contains a detailed description of interoperability in heterogeneous WSN using the IEEE 1451 standard. This work focuses on personal area networks (PAN) with smart sensors and actuators. Also, a technical, syntactic and semantic levels of interoperability based on ...

  5. Interoperability in wireless sensor networks based on IEEE 1451 standard

    OpenAIRE

    Higuera Portilla, Jorge Eduardo; Polo Cantero, José

    2012-01-01

    The syntactic and semantic interoperability is a challenge of the Wireless Sensor Networks (WSN) with smart sensors in pervasive computing environments to increase their harmonization in a wide variety of applications. This chapter contains a detailed description of interoperability in heterogeneous WSN using the IEEE 1451 standard. This work focuses on personal area networks (PAN) with smart sensors and actuators. Also, a technical, syntactic and semantic levels of interoperability based on ...

  6. 认识IEEE1394端口

    Institute of Scientific and Technical Information of China (English)

    王玉岭

    2005-01-01

    Apple称之为FireWire(火线)Sony称之为i.Link Texas Instruments称之为Lynx。尽管各厂商注册的商标名称不同,但实质都是一项技术,那就是IEEE1394。为什么PC业界对其会如此着迷呢?

  7. 17th IEEE NPSS Real Time Conference – RT-2010

    CERN Multimedia

    Carlos Varandas

    2010-01-01

    Congress Centre of “Instituto Superior Técnico”, Lisboa, Portugal, 24-28 May, 2010 ABSTRACT SUBMISSION OPEN Abstract Submission Deadline: March 1st, 2010 Dear Sir/Madam, We are pleased to announce that abstract submission for the 17th IEEE NPSS Real Time Conference is now open on our web site. The deadline for submitting an abstract is 1st March 2010. Full conference details General Chairman

  8. ICP-MS Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Carman, April J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Eiden, Gregory C. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2014-11-01

    This is a short document that explains the materials that will be transmitted to LLNL and DNN HQ regarding the ICP-MS Workshop held at PNNL June 17-19th. The goal of the information is to pass on to LLNL information regarding the planning and preparations for the Workshop at PNNL in preparation of the SIMS workshop at LLNL.

  9. MOOC Design Workshop

    DEFF Research Database (Denmark)

    Nørgård, Rikke Toft; Mor, Yishay; Warburton, Steven

    2016-01-01

    For the last two years we have been running a series of successful MOOC design workshops. These workshops build on previous work in learning design and MOOC design patterns. The aim of these workshops is to aid practitioners in defining and conceptualising educational innovations (predominantly, ...

  10. Performance Analysis of the IEEE 802.11s PSM

    Directory of Open Access Journals (Sweden)

    Mirza Nazrul Alam

    2012-01-01

    Full Text Available With the introduction of IEEE 802.11 power save mode (PSM, a lot of work has been done to enhance the energy saving ability of the wireless nodes. The ultimate goal of the research is to make the networking equipment carbon neutral and prolong the lifetime of the energy limited device for various applications; in some cases it is a trade-off between energy efficiency and delay. However, few studies have been made until now in the area of IEEE 802.11s based link specific power mode. The essence of this method is the ability of a node to maintain different power modes with its different peer nodes at the same time. A new peer service period (PSP mechanism is also proposed in IEEE 802.11s amendment for transmitting to a receiver operating in PSM. In this paper the performance of the link specific power mode is studied for a single- and a multilink network in terms of energy, delay throughput, and sleep duration. It is found that at small load the energy saving could be as high as eighty percent when compared with the active mode operation. A stochastic model, based on discrete time discrete state Markov chain, is developed for one peer link operation to study the system behavior closely during PSM operation.

  11. BrainMap `95 workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    The fourth annual BrainMap workshop was held at La Mansion del Rio Hotel in San Antonio December 3--4, 1995. The conference title was ``Human Brain Mapping and Modeling.`` The meeting was attended by 137 registered participants and 30 observers from 82 institutions representing 12 countries. The meeting focused on the technical issues associated with brain mapping and modeling. A total of 23 papers were presented covering the following topics: spatial normalization and registration; functional image analysis; metanalysis and modeling; and new horizons in biological databases. The full program with abstracts was available on the Research Imaging Center`s web site. A book will be published by John Wiley and Sons prior to the end of 1998.

  12. Coexistence of IEEE 802.11b/g WLANs and IEEE 802.15.4 WSNs: Modeling and Protocol Enhancements

    NARCIS (Netherlands)

    Yuan, W.

    2011-01-01

    As an emerging short-range wireless technology, IEEE 802.15.4/ZigBee Wireless Sensor Networks (WSNs) are increasingly used in the fields of home control, industrial control, consumer electronics, energy management, building automation, telecom services, personal healthcare, etc. IEEE

  13. Coexistence of IEEE 802.11b/g WLANs and IEEE 802.15.4 WSNs: Modeling and Protocol Enhancements

    NARCIS (Netherlands)

    Yuan, W.

    2011-01-01

    As an emerging short-range wireless technology, IEEE 802.15.4/ZigBee Wireless Sensor Networks (WSNs) are increasingly used in the fields of home control, industrial control, consumer electronics, energy management, building automation, telecom services, personal healthcare, etc. IEEE 802.15.4/Zig-Be

  14. Fandom and the fourth wall

    Directory of Open Access Journals (Sweden)

    Jenna Kathryn Ballinger

    2014-09-01

    Full Text Available I use the Teen Wolf fandom as an example to examine the ways social media has created a more complicated, nuanced relationship with fans. The collapse of the fourth wall between fans and The Powers That Be can have both positive and negative impacts, depending on the willingness of participants to maintain mutual respect and engage in meaningful dialogue.

  15. 23rd Workshop of the Italian Neural Networks Society (SIREN)

    CERN Document Server

    Esposito, Anna; Morabito, Francesco

    2014-01-01

    This volume collects a selection of contributions which has been presented at the 23rd Italian Workshop on Neural Networks, the yearly meeting of the Italian Society for Neural Networks (SIREN). The conference was held in Vietri sul Mare, Salerno, Italy during May 23-24, 2013. The annual meeting of SIREN is sponsored by International Neural Network Society (INNS), European Neural Network Society (ENNS) and IEEE Computational Intelligence Society (CIS). The book – as well as the workshop-  is organized in two main components, a special session and a group of regular sessions featuring different aspects and point of views of artificial neural networks, artificial and natural intelligence, as well as psychological and cognitive theories for modeling human behaviors and human machine interactions, including Information Communication applications of compelling interest.  .

  16. 1st Workshop on Eye Tracking and Visualization

    CERN Document Server

    Chuang, Lewis; Fisher, Brian; Schmidt, Albrecht; Weiskopf, Daniel

    2017-01-01

    This book discusses research, methods, and recent developments in the interdisciplinary field that spans research in visualization, eye tracking, human-computer interaction, and psychology. It presents extended versions of papers from the First Workshop on Eye Tracking and Visualization (ETVIS), which was organized as a workshop of the IEEE VIS Conference 2015. Topics include visualization and visual analytics of eye-tracking data, metrics and cognitive models, eye-tracking experiments in the context of visualization interfaces, and eye tracking in 3D and immersive environments. The extended ETVIS papers are complemented by a chapter offering an overview of visualization approaches for analyzing eye-tracking data and a chapter that discusses electrooculography (EOG) as an alternative of acquiring information about eye movements. Covering scientific visualization, information visualization, and visual analytics, this book is a valuable resource for eye-tracking researchers within the visualization community.

  17. PRIORITY BASED UPLINK SCHEDULER FOR IEEE 802.16 NETWORKS

    Directory of Open Access Journals (Sweden)

    Gurpreet Singh,

    2011-06-01

    Full Text Available IEEE 802.16, the standard for fixed, portable and mobile Broadband Wireless Access (BWA systems, is promising to support different classes of traffic with Quality of Service (QoS. The Medium Access Control (MAC protocol defines a wide variety of mechanisms for bandwidth allocation and QoS provision. However, the details of how to schedule traffic are left unspecified. In this paper, we propose ascheduling strategy for uplink traffic. Simulation results show that our scheme is capable to provide required QoS.

  18. 15th IEEE International Conference on Intelligent Engineering Systems

    CERN Document Server

    Živčák, Jozef; Aspects of Computational Intelligence Theory and Applications

    2013-01-01

    This volume covers the state-of-the art of the research and development in various aspects of computational intelligence and gives some perspective directions of development. Except the traditional engineering areas that contain theoretical knowledge, applications, designs and projects, the book includes the area of use of computational intelligence in biomedical engineering. „Aspects of Computational Intelligence: Theory and Applications” is a compilation of carefully selected extended papers written on the basis of original contributions presented at the 15th IEEE International Conference on Intelligent Engineering Systems 2011, INES 2011 held at June 23.-26. 2011 in AquaCity Poprad, Slovakia.    

  19. 基于IEEE1149.7的TAP控制器命令研究%Commands of TAP controller based on IEEE1149.7

    Institute of Scientific and Technical Information of China (English)

    江坤; 高俊强

    2013-01-01

    随着待测芯片的集成度越来越高,IEEE 1149.1标准已很难满足芯片设计对测试与调试的要求.IEEE1149.7标准在保持与IEEE1149.1兼容的基础上增加了新功能,提供了一种全新的双引脚测试与调试方法.目前对IEEE1149.7的研究处于起步阶段,所以研究支持其的控制器命令对今后的发展具有重要的意义.本文在深入研究IEEE 1149.7标准的基础上,利用Quartus Ⅱ开发平台设计了基于TAP控制器命令的测试控制器,并进行了仿真验证.结果表明产生的命令测试信号符合IEEE 1149.7标准对TAP控制器命令的规定.%With the increasing integration of test chip,IEEE 1149.1 has been difficult to meet the requirements of the chip testing and designing.Being compatible with IEEE 1149.1,IEEE 1149.7 provides a new two-pin test and debug methods.Because IEEE 1149.7 is still in the initial stage,to study its commands of controller is of great significance on the future development of IEEE 1149.7.This paper is based on the deep study of IEEE 1149.7 standard,to design a test controller based on the commands of TAP controller by using QuartusⅡ platform and perform simulation verification.The result shows that the test signal generated by the controller can meet the requirements of IEEE 1149.7.

  20. Extending Service Area of IEEE 802.11 Ad Hoc Networks

    Science.gov (United States)

    Choi, Woo-Yong

    2012-06-01

    According to the current IEEE 802.11 wireless LAN standards, IEEE 802.11 ad hoc networks have the limitation that all STAs (Stations) are in the one-hop transmission range of each other. In this paper, to alleviate the limitation of IEEE 802.11 ad hoc networks we propose the efficient method for selecting the most appropriate pseudo AP (Access Point) from among the set of ad hoc STAs and extending the service area of IEEE 802.11 ad hoc networks by the pseudo AP's relaying the internal traffic of IEEE 802.11 ad hoc networks. Numerical examples show that the proposed method significantly extends the service area of IEEE 802.11 ad hoc networks.

  1. The First IEEE International Symposium On Industrial Electronics Held in Xi'an

    Institute of Scientific and Technical Information of China (English)

    1992-01-01

    The First IEEE International symposium on Industrial Electronics (ISIE) was held at Holiday Inn,xian, P.R.China on May 25-29,1992. The symposium was jointly sponsored by the IEEE Industrial Electronics Society(IES), the IEEE Beijing Section, the Society of Instrument and Control Engineers((?)pan), and the Shaanxi Provincial science and Technology Commission, in cooperation with Northwestern Polytechnieal University(NPU), Xian Jiaotong University and Xidian University.

  2. Wireless Coexistence between IEEE 802.11- and IEEE 802.15.4-Based Networks: A Survey

    OpenAIRE

    2011-01-01

    As more and more wireless devices use the 2.4 GHz radio spectrum, the coexistence of 2.4 GHz wireless devices operating in one place has become a hot topic. With low transmit power, the widely deployed IEEE 802.15.4-based networks are easily interfered with by other 2.4 GHz wireless networks, such as IEEE 802.11. IEEE 802.15.4-based wireless networks have paid great attention to the coexistence between themselves and with other non-IEEE 802.15.4 wireless networks. This problem has been furthe...

  3. Effective Bandwidth Utilization in IEEE802.11 for VOIP

    CERN Document Server

    Bhanu, S Vijay; Balakrishnan, V

    2010-01-01

    Voice over Internet protocol (VoIP) is one of the most important applications for the IEEE 802.11 wireless local area networks (WLANs). For network planners who are deploying VoIP over WLANs, one of the important issues is the VoIP capacity. VoIP bandwidth consumption over a WAN is one of the most important factors to consider when building a VoIP infrastructure. Failure to account for VoIP bandwidth requirements will severely limit the reliability of a VoIP system and place a huge burden on the WAN infrastructure. Less bandwidth utilization is the key reasons for reduced number of channel accesses in VOIP. But in the QoS point of view the free bandwidth of atleast 1-5% will improve the voice quality. This proposal utilizes the maximum bandwidth by leaving 1-5% free bandwidth. A Bandwidth Data rate Moderation (BDM) algorithm has been proposed which correlates the data rate specified in IEEE802.11b with the free bandwidth. At each time BDM will calculate the bandwidth utilization before sending the packet to i...

  4. Vulnerability and Attack of Routing Protocol in IEEE 802.11s%IEEE802.11s路由协议漏洞与攻击

    Institute of Scientific and Technical Information of China (English)

    杜尚鑫; 易平; 罗庆华

    2012-01-01

    IEEE802.11s是IEEE关于无线Mesh网络的规范。802.1ls虽然沿用了IEEE802.11i的安全规范,但是对于路由协议的安全并没有做过多的定义,由此产生了一定的安全隐患。文章分析了IEEE802.11s标准f草案)中的路由协议的漏洞,并针对IEEE802.1ls中使用的混合无线网状网协议(Hybrid WirelessMesh Protocol,HWMP)设计了两种攻击方式,从而破坏无线网状网络的可用性。通过在自行设计的路由器平台上实现无线攻击,并分析攻击对网络造成的影响来验证安全漏洞的存在性和可利用性。%IEEE802.1 l s is the IEEE specification of wireless Mesh network. Although 802.11s follows the IEEE 802.11i security specification, there is no much specification for routing protocol security. The routing protocol vulnerabilities in IEEE802.1 Is standard(draft) are analyzed, and two kinds of attacks aiming at HWMP(Hybrid Wireless Mesh Protocol) routing protocol used in the IEEE 802.11s are designed, thus to undermine the availability of wireless Mesh network. This paper analyzes the impact of attacks on wireless network and tells of the existence and utilizability of security vulnerability.

  5. Fourth-generation storage rings

    Energy Technology Data Exchange (ETDEWEB)

    Galayda, J. N.

    1999-11-16

    It seems clear that a linac-driven free-electron laser is the accepted prototype of a fourth-generation facility. This raises two questions: can a storage ring-based light source join the fourth generation? Has the storage ring evolved to its highest level of performance as a synchrotrons light source? The answer to the second question is clearly no. The author thinks the answer to the first question is unimportant. While the concept of generations has been useful in motivating thought and effort towards new light source concepts, the variety of light sources and their performance characteristics can no longer be usefully summed up by assignment of a ''generation'' number.

  6. Capacity and performance study of IEEE 802.11e in WLANs and ad hoc networks

    OpenAIRE

    Mjøberg, Frank Roar

    2007-01-01

    This master thesis focuses on the IEEE 802.11e Enhanced Distribution Channel Access (EDCA). The IEEE 802.11e protocol became an IEEE standard in November 2005 and is a very popular research topic. Even though the protocol has been tested for faults and errors a long time there are still research topics to explore. This thesis will try to answer some of those topics. The main topic in this thesis is how the IEEE 802.11e MAC operates in a multihop ad hoc network. We discuss and evaluated th...

  7. Capacity and performance study of IEEE 802.11e in WLANs and ad hoc networks

    OpenAIRE

    Mjøberg, Frank Roar

    2007-01-01

    This master thesis focuses on the IEEE 802.11e Enhanced Distribution Channel Access (EDCA). The IEEE 802.11e protocol became an IEEE standard in November 2005 and is a very popular research topic. Even though the protocol has been tested for faults and errors a long time there are still research topics to explore. This thesis will try to answer some of those topics. The main topic in this thesis is how the IEEE 802.11e MAC operates in a multihop ad hoc network. We discuss and evaluated th...

  8. IEEE 802.11 5GHz标准物理层研究

    Institute of Scientific and Technical Information of China (English)

    潘翔; 欧阳红升; 高泽华; 高峰

    2013-01-01

    IEEE 802.115GHz技术标准及相关设备的逐步成熟,使得5GHz WLAN网络建设成为可能.文章研究并分析了IEEE 802.11a、IEEE 802.11n、IEEE 802.11ac等5GHz WLAN标准的技术发展路径,并对其物理层关键技术及各标准所支持的最高数据速率作了重点分析.

  9. The fourth generation in supergravity

    Science.gov (United States)

    Enqvist, K.; Nanopoulos, D. V.; Zwirner, F.

    1985-12-01

    We consider model-independent constraints on the fourth-generation fermion masses and the magnitude of the D-term contribution to the scalar masses. We find that the ratio of vacuum expectation values is limited to the range 1/5 ~ 150 GeV. A general feature of the four-generation models is thus a heavy spectrum of sparticles. On leave from International School for Advanced Studies, Trieste, and Istituto Nazionale di Fisica Nucleare, Padua, Italy.

  10. The Fourth Way in Finland

    Directory of Open Access Journals (Sweden)

    Vesa Iitti

    2008-01-01

    Full Text Available This article focuses on the general history of the Fourth Way in Finland. The Fourth Way, or simply ‘the Work’, began as a Greco-Armenian man named Georges Ivanovich Gurdjieff (1866?–1949 gathered groups of pupils in St Petersburg and Moscow in 1912. To these groups, Gurdjieff started to teach what he had learned and synthesized between ca 1896 and 1912 during his travels on spiritual search of Egypt, Crete, Sumeria, Assyria, the Holy Land, Mecca, Ethiopia, Sudan, India, Afghanistan, the northern valleys of Siberia, and Tibet. Neither Gurdjieff nor any of his disciples called themselves a church, a sect, or anything alike, but referred to themselves simply as ‘the Work’, or as ‘the Fourth Way’. The name ‘the Fourth Way’ originates in a Gurdjieffian view that there are essentially three traditional ways of spiritual work: those of a monk, a fakir, and a yogi. These ways do not literally refer to the activities of a monk, a fakir, and a yogi, but to similar types of spiritual work emphasizing exercise of emotion, body, or mind. Gurdjieff’s teaching is a blend of various influences that include Suf­ism, orthodox Christianity, Buddhism, Kabbalah, and general elem­ents of various occult teachings of both the East and the West. Gurdjieff’s teaching is a blend of various influences that include Suf­ism, orthodox Christianity, Buddhism, Kabbalah, and general elem­ents of various occult teachings of both the East and the West. It is a unique combination of cosmology, psychology, theory of evolution, and overall theory and practise aiming to help individ­uals in their efforts towards what is called ‘self-remembering’.

  11. Coexistence of IEEE 802.11b/g WLANs and IEEE 802.15.4 WSNs: Modeling and Protocol Enhancements

    OpenAIRE

    Yuan, W.

    2011-01-01

    As an emerging short-range wireless technology, IEEE 802.15.4/ZigBee Wireless Sensor Networks (WSNs) are increasingly used in the fields of home control, industrial control, consumer electronics, energy management, building automation, telecom services, personal healthcare, etc. IEEE 802.15.4/Zig-Bee WSNs share the same 2.4 GHz license-free Industrial, Scientific, and Medical (ISM) band with many other wireless systems such as IEEE 802.11b/g WLANs, Bluetooth, cordless phones, etc. Due to the ...

  12. Coexistence of IEEE 802.11b/g WLANs and IEEE 802.15.4 WSNs: Modeling and Protocol Enhancements

    OpenAIRE

    Yuan, W.

    2011-01-01

    As an emerging short-range wireless technology, IEEE 802.15.4/ZigBee Wireless Sensor Networks (WSNs) are increasingly used in the fields of home control, industrial control, consumer electronics, energy management, building automation, telecom services, personal healthcare, etc. IEEE 802.15.4/Zig-Bee WSNs share the same 2.4 GHz license-free Industrial, Scientific, and Medical (ISM) band with many other wireless systems such as IEEE 802.11b/g WLANs, Bluetooth, cordless phones, etc. Due to the ...

  13. Implementation of CRC in IEEE1394 Based on Verilog HDL%基于Verilog HDL的IEEE1394协议中CRC校验的实现

    Institute of Scientific and Technical Information of China (English)

    张艳; 李现国

    2009-01-01

    CRC是IEEE1394协议中重要的错误检测和恢复机制.介绍循环冗余校验的基本原理,根据IEEE1394协议中CRC码的产生原理,分析CRC校验的具体计算过程,讨论IEEE1394协议中CRC的FPGA实现.借助EDA工具和Verilog HDL语言实现了对这种算法的仿真和验证.

  14. IEEE-PSES中国首届研讨会在京举行%IEEE PSES first seminar was held in Beijing

    Institute of Scientific and Technical Information of China (English)

    郝丽娟

    2010-01-01

    @@ 近日,IEEE-PSES(电气电子工程师学会,产品安全工程师分会)中国首届研讨会在京举行.本次会议由IEEE-PSES主办,中国质量认证中心(CQC)承办.来自IEEE-PSES、IECTC108及检测、认证等相关行业的有关领导和专家共计百余人出席了本次会议.

  15. SPLASH'13 workshops summary

    DEFF Research Database (Denmark)

    Balzer, S.; Schultz, U. P.

    2013-01-01

    Following its long-standing tradition, SPLASH 2013 will host 19 high-quality workshops, allowing their participants to meet and discuss research questions with peers, to mature new and exciting ideas, and to build up communities and start new collaborations. SPLASH workshops complement the main t...

  16. Warehouse Sanitation Workshop Handbook.

    Science.gov (United States)

    Food and Drug Administration (DHHS/PHS), Washington, DC.

    This workshop handbook contains information and reference materials on proper food warehouse sanitation. The materials have been used at Food and Drug Administration (FDA) food warehouse sanitation workshops, and are selected by the FDA for use by food warehouse operators and for training warehouse sanitation employees. The handbook is divided…

  17. Benefits of IEEE-754 features in modern symmetric tridiagonaleigensolvers

    Energy Technology Data Exchange (ETDEWEB)

    Marques, Osni; Riedy, Jason E.; Vomel, Christof

    2006-03-12

    Bisection is one of the most common methods used to compute the eigenvalues of symmetric tridiagonal matrices. Bisection relies on the Sturm count: For a given shift a, the number of negative pivots in the factorization T - {sigma}I = LDL{sup T} equals the number of eigenvalues of T that are smaller than a. In IEEE-754 arithmetic, the value oo permits the computation to continue past a zero pivot, producing a correct Sturm count when T is unreduced. Demmel and Li showed that using oo rather than testing for zero pivots within the loop could significantly improve performance on certain architectures. When eigenvalues are to be computed to high relative accuracy, it is often preferable to work with LDL{sup T} factorizations instead of the original tridiagonal T. One important example is the MRRR algorithm. When bisection is applied to the factored matrix, the Sturm count is computed from LDL{sup T} which makes differential stationary and progressive qds algorithms the methods of choice. While it seems trivial to replace T by LDL{sup T}, in reality these algorithms are more complicated: In IEEE-754 arithmetic, a zero pivot produces an overflow followed by an invalid exception (NaN, or 'Not a Number') that renders the Sturm count incorrect. We present alternative, safe formulations that are guaranteed to produce the correct result. Benchmarking these algorithms on a variety of platforms shows that the original formulation without tests is always faster provided that no exception occurs. The transforms see speed-ups of up to 2.6x over the careful formulations. Tests on industrial matrices show that encountering exceptions in practice is rare. This leads to the following design: First, compute the Sturm count by the fast but unsafe algorithm. Then, if an exception occurs, recompute the count by a safe, slower alternative. The new Sturm count algorithms improve the speed of bisection by up to 2x on our test matrices. Furthermore, unlike the traditional tiny

  18. Workshops as a Research Methodology

    DEFF Research Database (Denmark)

    Ørngreen, Rikke; Levinsen, Karin Tweddell

    2017-01-01

    This paper contributes to knowledge on workshops as a research methodology, and specifically on how such workshops pertain to e-learning. A literature review illustrated that workshops are discussed according to three different perspectives: workshops as a means, workshops as practice, and worksh......This paper contributes to knowledge on workshops as a research methodology, and specifically on how such workshops pertain to e-learning. A literature review illustrated that workshops are discussed according to three different perspectives: workshops as a means, workshops as practice......, and workshops as a research methodology. Focusing primarily on the latter, this paper presents five studies on upper secondary and higher education teachers’ professional development and on teaching and learning through video conferencing. Through analysis and discussion of these studies’ findings, we argue...

  19. 基于IEEE P1687的可变扫描链设计%Design of Flexible Scan-chain Based on IEEE P1687

    Institute of Scientific and Technical Information of China (English)

    刘洋; 颜学龙

    2012-01-01

    在系统芯片SoC中,嵌入式仪器的应用越来越广泛;如何利用已经获得广泛应用的IEEE 1149.1测试访问端口(TAP)实现对嵌入式仪器的访问成为一个新的问题;IEEE P1687 (IJTAG)建议标准提供了一个连接TAP与片上嵌入式仪器的界面标准;其特点是在扫描链中插入SIB使得在嵌入式仪器网络设计和嵌入式仪器的访问中扫描链具有灵活可变的特性;介绍了IEEE P1687标准,分析了IEEE 1149.1在嵌入式仪器访问应用中的缺点及IEEE P1687的优势,并设计实现了SIB的功能,给出了P1687的单层与多层网络结构,并对所需功能进行了仿真验证证明方案可行.%In the testing of .system on chips (SoC) , Embedded instrument are becoming more widely used in test, debug and monitoring. How to use the widespread IEEE 1149. 1 Standard Test Access Port as the interface for accessing embedded instrument becomes a new issue. The IEEE P1687 (IJTAG) standard proposal aims at providing a standardized interface between the IEEE Standard 1149. 1 test access port (TAP) and on -chip embedded instrument. A key feature in P1687 is to include Segment Insertion Bits (SIBs) in the scan-path to allow flexibility both in designing the instrument access network and in scheduling the access to instruments. This paper presents the IEEE P1687 standard, analyses the background of IEEE 1149. 1 and prior work of IEEE P1687, designed the SIB, the flat and hierarchical architecture.

  20. Report on the Aseismic Slip, Tremor, and Earthquakes Workshop

    Science.gov (United States)

    Gomberg, Joan; Roeloffs, Evelyn; Trehu, Anne; Dragert, Herb; Meertens, Charles

    2008-01-01

    This report summarizes the discussions and information presented during the workshop on Aseismic Slip, Tremor, and Earthquakes. Workshop goals included improving coordination among those involved in conducting research related to these phenomena, assessing the implications for earthquake hazard assessment, and identifying ways to capitalize on the education and outreach opportunities presented by these phenomena. Research activities of focus included making, disseminating, and analyzing relevant measurements; the relationships among tremor, aseismic or 'slow-slip', and earthquakes; and discovering the underlying causative physical processes. More than 52 participants contributed to the workshop, held February 25-28, 2008 in Sidney, British Columbia. The workshop was sponsored by the U.S. Geological Survey, the National Science Foundation?s Earthscope Program and UNAVCO Consortium, and the Geological Survey of Canada. This report has five parts. In the first part, we integrate the information exchanged at the workshop as it relates to advancing our understanding of earthquake generation and hazard. In the second part, we summarize the ideas and concerns discussed in workshop working groups on Opportunities for Education and Outreach, Data and Instrumentation, User and Public Needs, and Research Coordination. The third part presents summaries of the oral presentations. The oral presentations are grouped as they were at the workshop in the categories of phenomenology, underlying physical processes, and implications for earthquake hazards. The fourth part contains the meeting program and the fifth part lists the workshop participants. References noted in parentheses refer to the authors of presentations made at the workshop, and published references are noted in square brackets and listed in the Reference section. Appendix A contains abstracts of all participant presentations and posters, which also have been posted online, along with presentations and author contact

  1. 利用CSP方法对IEEE802.11w形式化分析%Using CSP for formal analysis of IEEE 802.11w protocol

    Institute of Scientific and Technical Information of China (English)

    吴名欢; 程小辉; 李雄伟

    2015-01-01

    IEEE 802.11w authentication protocol based on the IEEE 802.11i enhances the IEEE 802.11i security for man-agement frames.In order to study the safety of the protocol, this paper modeled the protocol by formal analysis using communi-cating sequential processes (CSP ).This paper chosed the role of protocol and the attacker for modelling and verification.It used CSP for modelling and performed the verification using FDR.In the experiments, it found an attack in this protocol.It checked authentication and security attributes and discovered the middleman attack case.It can provide a reference to improve the safety of IEEE 802.11w help.%运行在 IEEE 802.11i 基础上的 IEEE 802.11w 增加了对无线网络管理帧的保护,针对 IEEE 802.11w 协议的安全性问题,利用了通信顺序进程(CSP)对其进行形式化分析。对协议运行在恶意环境中,存在攻击者的情况下,利用 CSP 方法建立了攻击者和协议主体的 CSP 进程模型。使用模型检测工具故障发散改进器(FDR)进行仿真实验,对协议的认证和安全属性进行了校验,发现该协议存在中间人攻击情况,为提高 IEEE 802.11w的安全性提供了帮助。

  2. WIH-based IEEE 802.11 ECG monitoring implementation.

    Science.gov (United States)

    Moein, A; Pouladian, M

    2007-01-01

    New wireless technologies make possible the implementation of high level integration wireless devices which allow the replacement of traditional large wired monitoring devices. It offers new functionalities to physicians and will reduce the costs. Among these functionalities, biomedical signals can be sent to other devices (PDA, PC . . . ) or processing centers, without restricting the patients' mobility. This article discusses the WIH (Ward-In-Hand) structure and the software required for its implementation before an operational example is presented with its results. The aim of this project is the development and implementation of a reduced size electrocardiograph based on IEEE 802.11 with high speed and more accuracy, which allows wireless monitoring of patients, and the insertion of the information into the Wi-Fi hospital networks.

  3. The New Standard IEEE 1599, Introduction and Examples

    Directory of Open Access Journals (Sweden)

    Denis L. Baggi

    2009-02-01

    Full Text Available IEEE 1599 is a new standard to encode music with XML symbols. It offers two important original characteristics compared to existing standards of the worlds of music, musicology and computer applications to this art and science. On one side, the encoding is in the form of symbols that can be read both by machines and humans. On the other, it allows the realization of applications in which all aspects of music, such as audio and sound, graphical representation, historical data, performance indications, represented thanks to the new concept of layers, are fully integrated, synchronized and can be accessed both individually and as parts of a whole. The article will give a brief description of the standard and of applications that have been built to show its power.

  4. IEEE 802.11 Wireless LAN Security White Paper

    Energy Technology Data Exchange (ETDEWEB)

    King, J

    2001-10-22

    Given the increased productivity and growing popularity of wireless communications in general, and wireless data communications in particular, this paper outlines the protocols, security implications, and architectures of IEEE Std. 802.11-1999 wireless LANs (WLANs) and makes recommendations regarding a phased implementation of WLANs at LLNL. This project is driven by the need for convenient and secure access to the Internet for Laboratory visitors and to the internal network for Laboratory employees. A solid architecture designed with a priority on security will allow LLNL to offer network access in areas where it is traditionally hard to deploy wired networks. It will also enable such services as wireless access for inventory control and convenient network access for conference rooms around LLNL. Wireless network access has the potential to increase productivity by enabling instant access to information.

  5. Basic security measures for IEEE 802.11 wireless networks

    Directory of Open Access Journals (Sweden)

    Oscar P. Sarmiento

    2010-05-01

    Full Text Available This article presents a tutorial/discussion of three commonly-used IEEE 802.11 wireless network security standards: WEP, WPA and WPA2. A detailed analysis of the RC4 algorithm supporting WEP is presented, including its vulnera-bilities. The WPA and WPA2 encryption protocols’ most relevant aspects and technical characteristics are reviewed for a comparative analysis of the three standards in terms of the security they provide. Special attention has been paid to WEP encryption by using an educational simulation tool written in C++ Builder for facilitating the unders-tanding of this protocol at academic level. Two practical cases of wireless security configurations using Cisco net-working equipment are also presented: configuring and enabling WPA-Personal and WPA2-Personal (these being security options used by TKIP and AES, respectively.

  6. 75 FR 25281 - Food Protection Workshop; Public Workshop

    Science.gov (United States)

    2010-05-07

    ... about food safety, food defense, the regulations authorized by the Public Health Security and..., visit http://www.uark.edu/ua/foodpro/Workshops/Food_Safety_Defense_Workshop.html or contact Steven C... visit http://www.uark.edu/ua/foodpro/Workshops/Food_Safety_Defense_Workshop.html to register online...

  7. Review of the IEEE Standard for Computerized Operating Procedure Systems

    Energy Technology Data Exchange (ETDEWEB)

    O' Hara, J.; Higgins, J.

    2010-02-26

    Increasingly nuclear power plant procedures, such as emergency operating procedures, are being presented in computer form with functionality to support operator use and management of the procedures. The U.S. Nuclear Regulatory Commission (NRC) currently has guidance for the review of computer-based procedures (CBPs); however, there remain CBP functions and human performance issues for which up-to-date guidance is lacking. The Institute of Electrical and Electronics Engineers (IEEE) has initiated a standard development effort to address the human factors engineering (HFE) aspects of CBP systems. When completed, it may provide guidance to supplement the NRC staff's review criteria. The purpose of our study was to evaluate the suitability of the IEEE Standard for use in the NRC's HFE safety reviews of CBP systems and to ensure that the guidance meets the NRC's standard for scientific and engineering rigor used in its own guidance development efforts. We established the following criteria with which to evaluate the Standard: (1) it should meet an existing need of NRC reviewers, (2) it should be based in sound HFE principles, (3) it should be thoroughly peer-reviewed, and (4) it should address CBP-related human performance issues identified in the literature. This report describes the methodology we used to evaluate each criterion. Our evaluation concluded that the Standard generally does meet these criteria, however several areas were identified for which additional clarifications are needed. Thus consideration of the Standard's use by the NRC is supported. The standard evaluation methodology developed in this study can be generally applied to the review of other HFE standards being considered for possible use or endorsement by the NRC.

  8. The fourth dimension simply explained

    CERN Document Server

    Manning, Henry P

    2005-01-01

    To remove the contents of an egg without puncturing its shell or to drink the liquor in a bottle without removing the cork is clearly unthinkable - or is it? Understanding the world of Einstein and curved space requires a logical conception of the fourth dimension.This readable, informative volume provides an excellent introduction to that world, with 22 essays that employ a minimum of mathematics. Originally written for a contest sponsored by Scientific American, these essays are so well reasoned and lucidly written that they were judged to merit publication in book form. Their easily unders

  9. Fourth order deformed general relativity

    CERN Document Server

    Cuttell, Peter D

    2014-01-01

    Whenever the condition of anomaly freedom is imposed within the framework of effective approaches to loop quantum cosmology, one seems to conclude that a deformation of general covariance is required. Here, starting from a general deformation we regain an effective gravitational Lagrangian including terms up to fourth order in extrinsic curvature. We subsequently constrain the form of the corrections, and then investigate the conditions for the occurrence of a big bounce and the realisation of an inflationary era, in the presence of a perfect fluid or scalar field.

  10. 基于IEEE 1588时间同步系统的硬件实现%Hardware Implementation of Time Synchronization System Based on IEEE 1588

    Institute of Scientific and Technical Information of China (English)

    曹禹; 邹磊; 时维铎; 周国平

    2013-01-01

      IEEE 1588是关于网络测量和控制系统的高精度时间协议标准,其时间同步精度能够达到次微秒级。首先分析了IEEE 1588时间同步原理,然后以LPC1768+DP83640的硬件结构实现了IEEE 1588时间同步系统,最后利用示波器测试了主从时钟的时间同步精度。设计结果表明可以满足当今电力系统对高精度时间同步的要求。%IEEE 1588 is a high precision time protocol standards about network measurement and control system, its time synchronization precision can reach sub-microsecond level. This paper first analyzes the principle of IEEE 1588 time synchronization, then realizes the IEEE 1588 time synchronization system with LPC1768 +DP83640. Finally, uses the oscilloscope to test the master -slave clock time synchronization precision. Its results show that it can meet the need of the current electric power system to realize high accuracy time synchronization.

  11. Research on IEEE 802.22.1 Beacon Networks Application%IEEE 802.22.1信标网络应用研究

    Institute of Scientific and Technical Information of China (English)

    杨大全

    2012-01-01

    Several IEEE 802.22.1 beacon devices are used to build beacon network by self-organization. IEEE 802.22.1 beacon protocol is introduced, and the decision strategies of beacon networks in the process of establishing and maintenance are discussed. IEEE 802.22.1 beacon networks sensing and information detection in WRAN device are introduced. The maximum latency before scheduling a quiet period that will ensure to capture the full information of the beacon network is given.%多个IEEE 802.22.1信标设备将自组织成信标网络.介绍了IEEE 802.22.1标准中定义的自组织方案;讨论了信标网络建立与维持过程中的判决策略;介绍了无线区域网络(WRAN)设备对IEEE 802.22.1信标网络的识别与信息获取机制;给出了确保实现对信标网络信息解析所需要安排的最大时延.

  12. Attacks on IEEE 802.11 wireless networks

    Directory of Open Access Journals (Sweden)

    Dejan Milan Tepšić

    2013-06-01

    Full Text Available Security of wireless computer networks was initially secured with the WEP security protocol, which relies on the RC4 encryption algorithm and the CRC algorithm to check the integrity. The basic problems of the WEP are a short initialization vector, unsafe data integrity checking, using a common key, the lack of mechanisms for management and exchange of keys, the lack of protection from the endless insertion of the same package into the network, the lack of authentication of access points and the like. The consequences of these failures are easy attacks against the WEP network, namely their complete insecurity. Therefore, the work began on the IEEE 802.11i protocol, which should radically improve the security of wireless networks. Since the development of a protocol lasted, the WPA standard was released to offset the security gap caused by the WEP. The WPA also relies on RC4 and CRC algorithms, but brings temporary keys and the MIC algorithm for data integrity. The 802.1X authentication was introduced and common keys are no longer needed, since it is possible to use an authentication server. The length of the initialization vector was increased and the vector is obtained based on the packet serial number, in order to prevent the insertion of the same packet into the network. The weakness of the WPA security mechanism is the use of a common key. WPA2 (802.11i later appeared. Unlike the WPA mechanism that worked on old devices with the replacement of software, WPA2 requires new network devices that can perform AES encryption. AES replaces the RC4 algorithm and delivers much greater security. Data integrity is protected by encryption. Despite progress, there are still weaknesses in wireless networks. Attacks for denial of service are possible as well as spoofing package headers attacks. For now, it is not advisable to use wireless networks in environments where unreliability and unavailability are not tolerated. Introduction In the entire history of

  13. A formal analysis of ISO/IEEE P11073-20601 standard of medical device communication

    NARCIS (Netherlands)

    Goga, Nicolae; Costache, Stefania; Moldoveanu, Florica

    2009-01-01

    This article presents the formal work done for the ISO/IEEE P11073-20601 Draft Standard for Health informatics - Personal health device communication - Application profile Optimized exchange protocol. ISO/IEEE 11073 family defines standards for device communication between agents (e.g. blood pressur

  14. Design Optimization of Cyber-Physical Distributed Systems using IEEE Time-sensitive Networks (TSN)

    DEFF Research Database (Denmark)

    Pop, Paul; Lander Raagaard, Michael; Craciunas, Silviu S.

    2016-01-01

    In this paper we are interested in safety-critical real-time applications implemented on distributed architectures supporting the Time-SensitiveNetworking (TSN) standard. The ongoing standardization of TSN is an IEEE effort to bring deterministic real-time capabilities into the IEEE 802.1 Ethernet...

  15. IEEE Nuclear Science Symposium and Medical Imaging Conference

    CERN Document Server

    2016-01-01

    The NSS/MIC is a well-established meeting that has continuously provided an exceptional venue to showcase outstanding developments and contributions across the nuclear and medical instrumentation fields. This conference brings together engineers and scientists from around the world to share their knowledge and to gain insight and inspiration from others. The conference will include a distinguished series of short courses, relevant refresher courses, and workshops that will address areas of particular interest.

  16. Performance Analysis of IEEE 802.11 DCF and IEEE 802.11e EDCA in Non-saturation Condition

    Science.gov (United States)

    Kim, Tae Ok; Kim, Kyung Jae; Choi, Bong Dae

    We analyze the MAC performance of the IEEE 802.11 DCF and 802.11e EDCA in non-saturation condition where device does not have packets to transmit sometimes. We assume that a flow is not generated while the previous flow is in service and the number of packets in a flow is geometrically distributed. In this paper, we take into account the feature of non-saturation condition in standards: possibility of transmission performed without preceding backoff procedure for the first packet arriving at the idle station. Our approach is to model a stochastic behavior of one station as a discrete time Markov chain. We obtain four performance measures: normalized channel throughput, average packet HoL (head of line) delay, expected time to complete transmission of a flow and packet loss probability. Our results can be used for admission control to find the optimal number of stations with some constraints on these measures.

  17. Nuclear Innovation Workshops Report

    Energy Technology Data Exchange (ETDEWEB)

    Jackson, John Howard [Idaho National Lab. (INL), Idaho Falls, ID (United States); Allen, Todd Randall [Idaho National Lab. (INL), Idaho Falls, ID (United States); Hildebrandt, Philip Clay [Idaho National Lab. (INL), Idaho Falls, ID (United States); Baker, Suzanne Hobbs [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-09-01

    The Nuclear Innovation Workshops were held at six locations across the United States on March 3-5, 2015. The data collected during these workshops has been analyzed and sorted to bring out consistent themes toward enhancing innovation in nuclear energy. These themes include development of a test bed and demonstration platform, improved regulatory processes, improved communications, and increased public-private partnerships. This report contains a discussion of the workshops and resulting themes. Actionable steps are suggested at the end of the report. This revision has a small amount of the data in Appendix C removed in order to avoid potential confusion.

  18. Ocean margins workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-12-31

    The Department of Energy (DOE) is announcing the refocusing of its marine research program to emphasize the study of ocean margins and their role in modulating, controlling, and driving Global Change phenomena. This is a proposal to conduct a workshop that will establish priorities and an implementation plan for a new research initiative by the Department of Energy on the ocean margins. The workshop will be attended by about 70 scientists who specialize in ocean margin research. The workshop will be held in the Norfolk, Virginia area in late June 1990.

  19. IEEE 1588 Clock Synchroniz ation in Distributed Systems%IEEE 1588时钟同步技术在分布式系统中的研究*

    Institute of Scientific and Technical Information of China (English)

    徐晓霞; 丁建功

    2014-01-01

    In order to realize high accuracy synchronous data acquisition and control in distributed system ,a distributed system clock synchronization method based on IEEE 1588 protocol is proposed .This paper analyzes the principle of master clock algorithm and the time synchronization process of local clock and master clock ,puts forward a IEEE 1588 realization scheme ,provides a hardware design method ,and elaborates the master‐slave clock software design process .On the basis of the work ,verifies the master‐slave clock synchronization .The experiments show that the method is feasible ,clock synchro‐nization precision can reach microsecond ,and may serve as a reference ,when the further application of IEEE 1588 in distrib‐uted industrial control systems is concerned .%为实现分布式系统高精度同步数据采集及实时控制,提出一种基于 IEEE 1588协议的分布式系统时钟同步方法。论文深入分析了IEEE 1588协议的算法原理和本地时钟同步主时钟的过程,提出了时间戳的IEEE 1588实现方案,提供了硬件设计方法,阐述了主从时钟的软件设计流程,在此基础上对主从时钟的同步进行了验证。实验证明:该方法是切实可行的,同步结果达到了10μs同步,为下一步将IEEE 1588大规模应用到分布式工业控制系统中起到了借鉴的作用。

  20. Appendix D of the Final Report of the Mid-Atlantic Marine Wildlife Surveys, Modeling, and Data. Workshop to Establish Coordination and Communication

    Energy Technology Data Exchange (ETDEWEB)

    None

    2013-07-01

    The Wind Program hosted a two-day workshop on July 24-25, 2012 with scientists and regulators engaged in marine ecological survey, modeling, and database efforts pertaining to the waters of the Mid-Atlantic region. This is the fourth appendix to the report, the presentations from the workshop.

  1. Cybernetics and Workshop Design.

    Science.gov (United States)

    Eckstein, Daniel G.

    1979-01-01

    Cybernetic sessions allow for the investigation of several variables concurrently, resulting in a large volume of input compacted into a concise time frame. Three session questions are reproduced to illustrate the variety of ideas generated relative to workshop design. (Author)

  2. Complex Flow Workshop Report

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2012-05-01

    This report documents findings from a workshop on the impacts of complex wind flows in and out of wind turbine environments, the research needs, and the challenges of meteorological and engineering modeling at regional, wind plant, and wind turbine scales.

  3. Workshop: Teaching Primitive Arts.

    Science.gov (United States)

    Jordison, Jerry

    1999-01-01

    Discusses the concrete and spiritual aspects of teaching workshops on survival skills or primitive arts. Gives details on lostproofing, or ways to teach a child not to get lost in the outdoors; building a survival shelter; and wilderness cooking. (CDS)

  4. Printed Spacecraft Workshop Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The objectives of this workshop are to engage the engineering community at JPL that is knowledgeable in this technology in guiding/developing/critiquing  its...

  5. Waterfowl identification workshops

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Summary of waterfowl identification workshops conducted by Upper Souris National Wildlife Refuge and J. Clark Salyer National Wildlife Refuge. Objectives of the...

  6. Urban Waters Workshop

    Science.gov (United States)

    This page will house information leading up to the 2017 Urban Waters National Training Workshop. The agenda, hotel and other quarterly updates will be posted to this page including information about how to register.

  7. Transportation Management Workshop: Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    1993-10-01

    This report is a compilation of discussions presented at the Transportation Management Workshop held in Gaithersburg, Maryland. Topics include waste packaging, personnel training, robotics, transportation routing, certification, containers, and waste classification.

  8. AAAI-07 Workshop Reports

    OpenAIRE

    Anand, Sarabjot Singh; Bahls, Daniel; Burghart, Catherina R.; Burstein, Mark; Chen, Huajun; Collins, John; Dietterich, Tom; Doyle, Jon; Drummond, Chris; Elazmeh, William; Geib, Christopher; Goldsmith, Judy; Guesgen, Hans W.; Hendler, Jim; Jannach, Dietmar

    2007-01-01

    The AAAI-07 workshop program was held Sunday and Monday, July 22-23, in Vancouver, British Columbia, Canada. The program included the following thirteen workshops: (1) Acquiring Planning Knowledge via Demonstration; (2) Configuration; (3) Evaluating Architectures for Intelligence; (4) Evaluation Methods for Machine Learning; (5) Explanation-Aware Computing; (6) Human Implications of Human-Robot Interaction; (7) Intelligent Techniques for Web Personalization; (8) Plan, Activity, and Intent Rec...

  9. A Workshop that Works

    CERN Document Server

    Yunes, Nicolas

    2014-01-01

    The main goal of a scientific workshop is to bring together experts in a specific field or related fields to collaborate, to discuss, and to creatively make progress in a particular area. The organizational aspects of such a meeting play a critical role in achieving these goals. We here present suggestions from scientists to scientists that hopefully help in organizing a successful scientific workshop that maximizes collaboration and creativity.

  10. Workshop I: Gender Studies

    Science.gov (United States)

    Hennessey, Eden; Kurup, Anitha; Meza-Montes, Lilia; Shastri, Prajval; Ghose, Shohini

    2015-12-01

    Participants in the Gender Studies workshop of the 5th IUPAP International Conference on Women in Physics discussed the gender question in science practice from a policy perspective, informed by investigations from the social science disciplines. The workshop's three sessions—"Equity and Education: Examining Gender Stigma in Science," "A Comparative Study of Women Scientists and Engineers: Experiences in India and the US," and "Toward Gender Equity Through Policy: Characterizing the Social Impact of Interventions—are summarized, and the resulting recommendations presented.

  11. Industrial Fuel Flexibility Workshop

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2006-09-01

    On September 28, 2006, in Washington, DC, ITP and Booz Allen Hamilton conducted a fuel flexibility workshop with attendance from various stakeholder groups. Workshop participants included representatives from the petrochemical, refining, food and beverage, steel and metals, pulp and paper, cement and glass manufacturing industries; as well as representatives from industrial boiler manufacturers, technology providers, energy and waste service providers, the federal government and national laboratories, and developers and financiers.

  12. Workshop applied antineutrino physics 2007

    Energy Technology Data Exchange (ETDEWEB)

    Akiri, T.; Andrieu, B.; Anjos, J.; Argyriades, J.; Barouch, G.; Bernstein, A.; Bersillon, O.; Besida, O.; Bowden, N.; Cabrera, A.; Calmet, D.; Collar, J.; Cribier, M.; Kerret, H. de; Meijer, R. de; Dudziak, F.; Enomoto, S.; Fallot, M.; Fioni, G.; Fiorentini, G.; Gale, Ph.; Georgadze, A.; Giot, L.; Gonin, M.; Guillon, B.; Henson, C.; Jonkmans, G.; Kanamaru, S.; Kawasaki, T.; Kornoukhov, V.; Lasserre, Th.; Learned, J.G.; Lefebvre, J.; Letourneau, A.; Lhillier, D.; Lindner, M.; Lund, J.; Mantovani, F.; Mcdonough, B.; Mention, G.; Monteith, A.; Motta, D.; Mueller, Th.; Oberauer, L.; Obolensky, M.; Odrzywolek, A.; Petcov, S.; Porta, A.; Queval, R.; Reinhold, B.; Reyna, D.; Ridikas, D.; Sadler, L.; Schoenert, St.; Sida, J.L.; Sinev, V.; Suekane, F.; Suvorov, Y.; Svoboda, R.; Tang, A.; Tolich, N.; Tolich, K.; Vanka, S.; Vignaud, D.; Volpe, Ch.; Wong, H

    2007-07-01

    The 'Applied Antineutrino Physics 2007' workshop is the fourth international meeting devoted to the opening of the neutrino physics to more applied fields, such as geophysics and geochemistry, nuclear industry, as well as the nonproliferation. This meeting highlights the world efforts already engaged to exploit the single characteristics of the neutrinos for the control of the production of plutonium in the civil nuclear power reactor. The potential industrial application of the measurement of the thermal power of the nuclear plants by the neutrinos is also approached. earth neutrinos were for the first time highlighted in 2002 by the KamLAND experiment. Several international efforts are currently underway to use earth neutrinos to reveal the interior of the Earth. This meeting is an opportunity to adapt the efforts of detection to the real needs of geophysicists and geochemists (sources of radiogenic heat, potassium in the court, feathers.) Finally more futuristic topics such as the detection of nuclear explosions, of low powers, are also discussed. This document gathers only the slides of the presentations.

  13. 48 CFR 52.223-16 - IEEE 1680 Standard for the Environmental Assessment of Personal Computer Products.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false IEEE 1680 Standard for the... CONTRACT CLAUSES Text of Provisions and Clauses 52.223-16 IEEE 1680 Standard for the Environmental Assessment of Personal Computer Products. As prescribed in 23.706(b)(1), insert the following clause: IEEE...

  14. Fourth International Conference on Squeezed States and Uncertainty Relations

    Science.gov (United States)

    Han, D. (Editor); Peng, Kunchi (Editor); Kim, Y. S. (Editor); Manko, V. I. (Editor)

    1996-01-01

    The fourth International Conference on Squeezed States and Uncertainty Relations was held at Shanxi University, Taiyuan, Shanxi, China, on June 5 - 9, 1995. This conference was jointly organized by Shanxi University, the University of Maryland (U.S.A.), and the Lebedev Physical Institute (Russia). The first meeting of this series was called the Workshop on Squeezed States and Uncertainty Relations, and was held in 1991 at College Park, Maryland. The second and third meetings in this series were hosted in 1992 by the Lebedev Institute in Moscow, and in 1993 by the University of Maryland Baltimore County, respectively. The scientific purpose of this series was initially to discuss squeezed states of light, but in recent years, the scope is becoming broad enough to include studies of uncertainty relations and squeeze transformations in all branches of physics, including, of course, quantum optics and foundations of quantum mechanics. Quantum optics will continue playing the pivotal role in the future, but the future meetings will include all branches of physics where squeeze transformations are basic transformation. This transition took place at the fourth meeting of this series held at Shanxi University in 1995. The fifth meeting in this series will be held in Budapest (Hungary) in 1997, and the principal organizer will be Jozsef Janszky of the Laboratory of Crystal Physics, P.O. Box 132, H-1052. Budapest, Hungary.

  15. IEEE 802.11ah: A Technology to Face the IoT Challenge

    Directory of Open Access Journals (Sweden)

    Victor Baños-Gonzalez

    2016-11-01

    Full Text Available Since the conception of the Internet of things (IoT, a large number of promising applications and technologies have been developed, which will change different aspects in our daily life. This paper explores the key characteristics of the forthcoming IEEE 802.11ah specification. This future IEEE 802.11 standard aims to amend the IEEE 802.11 legacy specification to support IoT requirements. We present a thorough evaluation of the foregoing amendment in comparison to the most notable IEEE 802.11 standards. In addition, we expose the capabilities of future IEEE 802.11ah in supporting different IoT applications. Also, we provide a brief overview of the technology contenders that are competing to cover the IoT communications framework. Numerical results are presented showing how the future IEEE 802.11ah specification offers the features required by IoT communications, thus putting forward IEEE 802.11ah as a technology to cater the needs of the Internet of Things paradigm.

  16. IEEE 802.11ah: A Technology to Face the IoT Challenge.

    Science.gov (United States)

    Baños-Gonzalez, Victor; Afaqui, M Shahwaiz; Lopez-Aguilera, Elena; Garcia-Villegas, Eduard

    2016-11-22

    Since the conception of the Internet of things (IoT), a large number of promising applications and technologies have been developed, which will change different aspects in our daily life. This paper explores the key characteristics of the forthcoming IEEE 802.11ah specification. This future IEEE 802.11 standard aims to amend the IEEE 802.11 legacy specification to support IoT requirements. We present a thorough evaluation of the foregoing amendment in comparison to the most notable IEEE 802.11 standards. In addition, we expose the capabilities of future IEEE 802.11ah in supporting different IoT applications. Also, we provide a brief overview of the technology contenders that are competing to cover the IoT communications framework. Numerical results are presented showing how the future IEEE 802.11ah specification offers the features required by IoT communications, thus putting forward IEEE 802.11ah as a technology to cater the needs of the Internet of Things paradigm.

  17. An Asynchronous IEEE Floating-Point Arithmetic Unit

    Directory of Open Access Journals (Sweden)

    Joel R. Noche

    2007-12-01

    Full Text Available An asynchronous floating-point arithmetic unit is designed and tested at the transistor level usingCadence software. It uses CMOS (complementary metal oxide semiconductor and DCVS (differentialcascode voltage switch logic in a 0.35 µm process using a 3.3 V supply voltage, with dual-rail data andsingle-rail control signals using four-phase handshaking.Using 17,085 transistors, the unit handles single-precision (32-bit addition/subtraction, multiplication,division, and remainder using the IEEE 754-1985 Standard for Binary Floating-Point Arithmetic, withrounding and other operations to be handled by separate hardware or software. Division and remainderare done using a restoring subtractive algorithm; multiplication uses an additive algorithm. Exceptionsare noted by flags (and not trap handlers and the output is in single-precision.Previous work on asynchronous floating-point arithmetic units have mostly focused on single operationssuch as division. This is the first work to the authors' knowledge that can perform floating-point addition,multiplication, division, and remainder using a common datapath.

  18. Throughput Analysis of IEEE 802.11 Multirate WLANs with Collision Aware Rate Adaptation Algorithm

    Institute of Scientific and Technical Information of China (English)

    Dhanasekaran Senthilkumar; A. Krishnan

    2010-01-01

    This paper presents a mathematical model that analyzes the throughput of the IEEE 802.11b distributed coordination function (DCF) with the collision aware rate adaptation (CARA) algorithm. IEEE 802.11 WLANs provide multiple transmission rates to improve system throughput by adapting the transmission rate to the current channel conditions. The system throughput is determined by some stations using low transmission rates due to bad channel conditions. CARA algorithm does not disturb the existing IEEE 802.1 lb formats and it can be easily incorporated into the commercial wireless local area networks (WLAN) devices. Finally, we verify our findings with simulation.

  19. Fuzzy logic congestion control in IEEE 802.11 wireless local area networks: A performance evaluation

    CSIR Research Space (South Africa)

    Nyirenda, CN

    2007-09-01

    Full Text Available networks because they are Clement .N. Nyirenda is with the Meraka Institute, Centre for Scientific and Industrial Research, Pretoria, South Africa (+27 72 1404564; e-mail: nyirendac@ ieee.org). Dawoud S. Dawoud is with the Radio Access Technologies... heavily depends on the frame payload size. When only frames are sent, the maximum throughput on the wireless channel on the wireless channel can drop below 1Mbps even at a data rate of 11 Mbps. At present, an IEEE working group (IEEE802.11n...

  20. Energy Harvesting - Wireless Sensor Networks for Indoors Applications Using IEEE 802.11

    DEFF Research Database (Denmark)

    Fafoutis, Xenofon; Sørensen, Thomas; Madsen, Jan

    2014-01-01

    The paper investigates the feasibility of using IEEE 802.11 in energy harvesting low-power sensing applications. The investigation is based on a prototype carbon dioxide sensor node that is powered by artificial indoors light. The wireless communication module of the sensor node is based on the RTX......4100 module. RTX4100 incorporates a wireless protocol that duty-cycles the radio while being compatible with IEEE 802.11 access points. The presented experiments demonstrate sustainable operation but indicate a trade-off between the benefits of using IEEE 802.11 in energy harvesting applications...

  1. Fourth Lepton Family is Natural in Technicolor

    DEFF Research Database (Denmark)

    T. Frandsen, Mads; Masina, Isabella; Sannino, Francesco

    2010-01-01

    structure with and without mixing with the Standard Model families. We also analyze the LHC potential to observe the fourth lepton family in tandem with the new composite Higgs dynamics. We finally introduce a model uniting the fourth lepton family and the technifermion sector at higher energies.......Imagine to discover a new fourth family of leptons at the Large Hadron Collider (LHC) but no signs of an associated fourth family of quarks. What would that imply? An intriguing possibility is that the new fermions needed to compensate for the new leptons gauge anomalies simultaneously address...

  2. Biomedical learning experiences for middle school girls sponsored by the Kansas State University Student Chapter of the IEEE EMBS.

    Science.gov (United States)

    Gruber, Lucinda; Griffith, Connor; Young, Ethan; Sullivan, Adriann; Schuler, Jeff; Arnold-Christian, Susan; Warren, Steve

    2009-01-01

    Learning experiences for middle school girls are an effective means to steer young women toward secondary engineering curricula that they might not have otherwise considered. Sponsorship of such experiences by a collegiate student group is worthwhile, as it gives the group common purpose and places college students in a position to mentor these young women. This paper addresses learning experiences in different areas of bio-medical engineering offered to middle school girls in November 2008 via a day-long workshop entitled "Engineering The Body." The Kansas State University (KSU) Student Chapter of the IEEE Engineering in Medicine and Biology Society (EMBS) worked with the KSU Women in Engineering and Science Program (WESP) to design and sponsor these experiences, which addressed the areas of joint mechanics, electrocardiograms, membrane transport, computer mouse design, and audio filters for cochlear implants. Fifty five middle-school girls participated in this event, affirming the notion that biomedical engineering appeals to young women and that early education and recruitment efforts have the potential to expand the biomedical engineering talent pool.

  3. Performance Analysis of IEEE 802.11e (EDCF) and IEEE 802.11(DCF) WLAN Incorporating Different Physical Layer Standards

    Science.gov (United States)

    Sharma, V.; Singh, H.; Malhotra, J.

    2012-12-01

    Medium access coordination function basically implements the distributed coordination function (DCF) which provides support to best effort services but limited to QoS services. Subsequently, a new standard, namely enhanced distributed channel access (EDCA) is reported. The IEEE 802.11e (EDCA) defines MAC procedures to support QoS requirements which specifies distributed contention based access scheme to access the shared wireless media. This paper evaluates the performance of EDCA based IEEE 802.11 WLAN for various access categories (ACs) using OPNET™ Modeller 14.5. Further, the computed results are compared with DCF protocols in terms of QoS parameters. Furthermore, the simulative observation is reported at data rate of 54 Mbps using different physical layer protocols such as IEEE 802.11a/b/g to stumble on the best one to be implemented with EDCF to achieve improved QoS.

  4. 基于OFDM的IEEE802.16a物理层简介%Introduction of IEEE802.16a Physical Layer Based on OFDM

    Institute of Scientific and Technical Information of China (English)

    许云东; 潘志文

    2006-01-01

    简要介绍了IEEE802.16的基本概况,描述了IEEE802.16a标准采用的几种物理层方案.IEEE802.16a协议物理层支持的主流技术就是OFDM技术,重点介绍了OFDM的基本原理,采用OFDM调制技术的WirelessMAN-OFDM系统,以及其物理层的一些参数及性能.最后介绍了2种双工方式的帧结构及其工作原理.

  5. Analysis of Adaptive Control Scheme in IEEE 802.11 and IEEE 802.11e Wireless LANs

    Science.gov (United States)

    Lee, Bih-Hwang; Lai, Hui-Cheng

    In order to achieve the prioritized quality of service (QoS) guarantee, the IEEE 802.11e EDCAF (the enhanced distributed channel access function) provides the distinguished services by configuring the different QoS parameters to different access categories (ACs). An admission control scheme is needed to maximize the utilization of wireless channel. Most of papers study throughput improvement by solving the complicated multidimensional Markov-chain model. In this paper, we introduce a back-off model to study the transmission probability of the different arbitration interframe space number (AIFSN) and the minimum contention window size (CWmin). We propose an adaptive control scheme (ACS) to dynamically update AIFSN and CWmin based on the periodical monitoring of current channel status and QoS requirements to achieve the specific service differentiation at access points (AP). This paper provides an effective tuning mechanism for improving QoS in WLAN. Analytical and simulation results show that the proposed scheme outperforms the basic EDCAF in terms of throughput and service differentiation especially at high collision rate.

  6. Langattoman lähiverkon päivitys IEEE 802.11g -laitteista IEEE 802.11n -laitteisiin

    OpenAIRE

    Kokkonen, Janne

    2009-01-01

    Insinöörityössä tutkittiin langattoman lähiverkon vaiheittaista päivittämistä IEEE 802.11g -standardin laitteista IEEE 802.11n -standardin laitteisiin. Tavoitteena oli tutkia teorian ja käytännön mittauksien pohjalta paras mahdollinen vaihtoehto verkon päivityksen toteuttamiseksi. Työhön liittyvät mittaukset suoritettiin Metropolia Ammattikorkeakoulun tiloissa ja laitteilla. Työn alussa selvitettiin langattomiin lähiverkkoihin liittyviä teoreettisia yksityiskohtia, joiden perusteella rake...

  7. Langattoman lähiverkon päivitys IEEE 802.11g -laitteista IEEE 802.11n -laitteisiin

    OpenAIRE

    Kokkonen, Janne

    2009-01-01

    Insinöörityössä tutkittiin langattoman lähiverkon vaiheittaista päivittämistä IEEE 802.11g -standardin laitteista IEEE 802.11n -standardin laitteisiin. Tavoitteena oli tutkia teorian ja käytännön mittauksien pohjalta paras mahdollinen vaihtoehto verkon päivityksen toteuttamiseksi. Työhön liittyvät mittaukset suoritettiin Metropolia Ammattikorkeakoulun tiloissa ja laitteilla. Työn alussa selvitettiin langattomiin lähiverkkoihin liittyviä teoreettisia yksityiskohtia, joiden perusteella rake...

  8. 高速接口USB与IEEE1394的性能分析%Performance Analysis of High-Speed Digital Interface USB and IEEE 1394

    Institute of Scientific and Technical Information of China (English)

    李洋; 邹建华

    2001-01-01

    The basic features of Universal Serial BusUSB and IEEE 1394 are analyzed and compared in this paper and the foreground of the two interfaces are described.%对计算机外设高速接口USB和IEEE 1394的技术特点和数据传输机制进行了较详细的分析,比较了两种接口的性能,并对其应用前景进行了展望。

  9. t4 Workshop Report*

    Science.gov (United States)

    Kleensang, Andre; Maertens, Alexandra; Rosenberg, Michael; Fitzpatrick, Suzanne; Lamb, Justin; Auerbach, Scott; Brennan, Richard; Crofton, Kevin M.; Gordon, Ben; Fornace, Albert J.; Gaido, Kevin; Gerhold, David; Haw, Robin; Henney, Adriano; Ma’ayan, Avi; McBride, Mary; Monti, Stefano; Ochs, Michael F.; Pandey, Akhilesh; Sharan, Roded; Stierum, Rob; Tugendreich, Stuart; Willett, Catherine; Wittwehr, Clemens; Xia, Jianguo; Patton, Geoffrey W.; Arvidson, Kirk; Bouhifd, Mounir; Hogberg, Helena T.; Luechtefeld, Thomas; Smirnova, Lena; Zhao, Liang; Adeleye, Yeyejide; Kanehisa, Minoru; Carmichael, Paul; Andersen, Melvin E.; Hartung, Thomas

    2014-01-01

    Summary Despite wide-spread consensus on the need to transform toxicology and risk assessment in order to keep pace with technological and computational changes that have revolutionized the life sciences, there remains much work to be done to achieve the vision of toxicology based on a mechanistic foundation. A workshop was organized to explore one key aspect of this transformation – the development of Pathways of Toxicity (PoT) as a key tool for hazard identification based on systems biology. Several issues were discussed in depth in the workshop: The first was the challenge of formally defining the concept of a PoT as distinct from, but complementary to, other toxicological pathway concepts such as mode of action (MoA). The workshop came up with a preliminary definition of PoT as “A molecular definition of cellular processes shown to mediate adverse outcomes of toxicants”. It is further recognized that normal physiological pathways exist that maintain homeostasis and these, sufficiently perturbed, can become PoT. Second, the workshop sought to define the adequate public and commercial resources for PoT information, including data, visualization, analyses, tools, and use-cases, as well as the kinds of efforts that will be necessary to enable the creation of such a resource. Third, the workshop explored ways in which systems biology approaches could inform pathway annotation, and which resources are needed and available that can provide relevant PoT information to the diverse user communities. PMID:24127042

  10. The QED Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Pieper, G.W.

    1994-07-01

    On May 18--20, 1994, Argonne National Laboratory hosted the QED Workshop. The workshop was supported by special funding from the Office of Naval Research. The purpose of the workshop was to assemble of a group of researchers to consider whether it is desirable and feasible to build a proof-checked encyclopedia of mathematics, with an associated facility for theorem proving and proof checking. Among the projects represented were Coq, Eves, HOL, ILF, Imps, MathPert, Mizar, NQTHM, NuPrl, OTTER, Proof Pad, Qu-Prolog, and RRL. Although the content of the QED project is highly technical rigorously proof-checked mathematics of all sorts the discussions at the workshop were rarely technical. No prepared talks or papers were given. Instead, the discussions focused primarily on such political, sociological, practical, and aesthetic questions, such as Why do it? Who are the customers? How can one get mathematicians interested? What sort of interfaces are desirable? The most important conclusion of the workshop was that QED is an idea worthy pursuing, a statement with which virtually all the participants agreed. In this document, the authors capture some of the discussions and outline suggestions for the start of a QED scientific community.

  11. Bringing Image and Language Together: A Workshop at the Lehman College Art Gallery.

    Science.gov (United States)

    Wexler, Alice

    2001-01-01

    Discusses a ten day workshop for kindergarten and fourth grade students that centered around the art exhibit "Contemporary Chinese Art and the Literary Culture of China" held at the Lehman College Art Gallery (Bronx, New York). Explains that students created accordion books based on Xing Fei's "Red Book." (CMK)

  12. Bringing Image and Language Together: A Workshop at the Lehman College Art Gallery.

    Science.gov (United States)

    Wexler, Alice

    2001-01-01

    Discusses a ten day workshop for kindergarten and fourth grade students that centered around the art exhibit "Contemporary Chinese Art and the Literary Culture of China" held at the Lehman College Art Gallery (Bronx, New York). Explains that students created accordion books based on Xing Fei's "Red Book." (CMK)

  13. Corrections to "Connectivity-Based Reliable Multicast MAC Protocol for IEEE 802.11 Wireless LANs"

    Directory of Open Access Journals (Sweden)

    Choi Woo-Yong

    2010-01-01

    Full Text Available We have found the errors in the throughput formulae presented in our paper "Connectivity-based reliable multicast MAC protocol for IEEE 802.11 wireless LANs". We provide the corrected formulae and numerical results.

  14. Throughput Analysis Model for IEEE 802.11e EDCA with Multiple Access Categories

    Directory of Open Access Journals (Sweden)

    Y. Lee

    2013-08-01

    Full Text Available IEEE 802.11e standard has been specified to support differentiated quality of service (QoS, one of the critical issues on the conventional IEEE 802.11 wireless local area networks (WLANs. Enhanced Distributed Channel Access (EDCA is the fundamental and mandatory contention-based channel access method of IEEE 802.11e, and delivers traffic based on differentiated Access Categories (ACs. A general three dimensional Markov chain model of IEEE 802.11e EDCA for performance analysis is proposed in this paper. The analytical model considers multiple stations with an arbitrary number of different ACs. It also differentiates the contention window (CW sizes and the arbitration interframe spaces (AIFSs, and considers virtual collision mechanism. Based on the model, the saturation throughput of EDCA is derived, and the accuracy of the proposed model is validated via simulations.

  15. Developing IEEE medical device standards: a case study, wearable cuffless blood pressure measuring devices.

    Science.gov (United States)

    Carey, Carole C; Zhang, Yuang-Ting

    2010-01-01

    The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) is a leading standards developing organization of global industry standards in a wide-range of industries, including biomedical and healthcare.

  16. 6th International Workshop Soft Computing Applications

    CERN Document Server

    Jain, Lakhmi; Kovačević, Branko

    2016-01-01

    These volumes constitute the Proceedings of the 6th International Workshop on Soft Computing Applications, or SOFA 2014, held on 24-26 July 2014 in Timisoara, Romania. This edition was organized by the University of Belgrade, Serbia in conjunction with Romanian Society of Control Engineering and Technical Informatics (SRAIT) - Arad Section, The General Association of Engineers in Romania - Arad Section, Institute of Computer Science, Iasi Branch of the Romanian Academy and IEEE Romanian Section.                 The Soft Computing concept was introduced by Lotfi Zadeh in 1991 and serves to highlight the emergence of computing methodologies in which the accent is on exploiting the tolerance for imprecision and uncertainty to achieve tractability, robustness and low solution cost. Soft computing facilitates the use of fuzzy logic, neurocomputing, evolutionary computing and probabilistic computing in combination, leading to the concept of hybrid intelligent systems.        The combination of ...

  17. United States housing, fourth quarter 2013

    Science.gov (United States)

    Delton Alderman

    2017-01-01

    In the beginning of 2013, the U.S. housing construction market indicated increases in all sectors; yet, by the fourth quarter’s end, only housing under construction improved. Moderation and declines are to be expected in the fourth quarter, as winter is setting in. Permits, starts, housing under construction, completions, and new and existing house sales all exceeded...

  18. Osteoblastic meningioma of the fourth ventricle.

    Science.gov (United States)

    Johnson, M D; Tulipan, N; Whetsell, W O

    1989-04-01

    Meningiomas of the fourth ventricle are rare neoplasms. Only meningothelial and fibroblastic subtypes, purportedly arising from the tela choroidea, have been described. In this report we describe clinical, neuroradiological and pathological findings in a 52-year-old man with mild hydrocephalus produced by a large, calcified, osteoblastic meningioma of the fourth ventricle.

  19. Access Point Selection for Multi-Rate IEEE 802.11 Wireless LANs

    Science.gov (United States)

    2014-05-16

    Feb 2010. [ 11 ] Y. Bejerano, S. jae Han, and L. Li, “Fairness and Load Balancing in Wireless LANs Using Association Control,” Networking, IEEE /ACM...Steenkiste, “Fixing 802 . 11 access point selection,” ACM SIGCOMM Computer Communication Review, 2002. [15] J. C. Chen, T. C. Chen, T. Zhang, and E. van...Access Point Selection for Multi-Rate IEEE 802.11 Wireless LANs Shicong Yang Avideh Zakhor Electrical Engineering and Computer Sciences University of

  20. Algorithm XXX : functions to support the IEEE standard for binary floating-point arithmetic.

    Energy Technology Data Exchange (ETDEWEB)

    Cody, W. J.; Mathematics and Computer Science

    1993-12-01

    This paper describes C programs for the support functions copysign(x,y), logb(x), scalb(x,n), nextafter(x,y), finite(x), and isnan(x) recommended in the Appendix to the IEEE Standard for Binary Floating-Point Arithmetic. In the case of logb, the modified definition given in the later IEEE Standard for Radix-Independent Floating-Point Arithmetic is followed. These programs should run without modification on most systems conforming to the binary standard.

  1. The Unum Number Format: Mathematical Foundations, Implementation and Comparison to IEEE 754 Floating-Point Numbers

    OpenAIRE

    Hunhold, Laslo

    2017-01-01

    This thesis examines a modern concept for machine numbers based on interval arithmetic called 'Unums' and compares it to IEEE 754 floating-point arithmetic, evaluating possible uses of this format where floating-point numbers are inadequate. In the course of this examination, this thesis builds theoretical foundations for IEEE 754 floating-point numbers, interval arithmetic based on the projectively extended real numbers and Unums.

  2. Improving Security Levels Of IEEE802.16e Authentication By Diffie-Hellman Method

    Directory of Open Access Journals (Sweden)

    Mohammad Zabihi

    2011-11-01

    Full Text Available In this paper, we proposed an authentication method according to Diffie-Hellman. First, we introduce different methods for authentication in IEEE.802.16 then we proposed an authentication method according to Diffie-Hellman and in the last we compare different methods for authentication to improve security in IEEE802.16e. CPN is a useful for simulation and compare protocol together so we use CPN tools in this paper.

  3. A Unified Computational Framework for Real-Time Optimal Control , IEEE (42nd; 2003; Maui, Hawaii)

    OpenAIRE

    Ross, I. Michael; Fahroo, Fariba

    2003-01-01

    The article of record as published may be located at http://ieeexplore.ieee.org Approved for public display, distribution unlimited Proceedings of the 42nd IEEE ; Conference on Decision and Control ; Maui, Hawaii USA, December 2003 The dynamics of each agent of a multi-agent controlled dynamical system can be formulated in several possible ways: differential inclusion, flatness parameterization, higher-order inclusions and so on. A plethora of techniques have been proposed for each o...

  4. IEEE 802.16协议及其应用

    Institute of Scientific and Technical Information of China (English)

    张云飞

    2009-01-01

    IEEE 802.16协议由于具有广阔的应用前景,目前受到了国内外学术界和产业界的广泛关注.本文首先介绍了IEEE 802.16协议系列的现状及其进展,然后叙述了其应用情况.

  5. Enhancing MAC performance of DCF protocol for IEEE 802.11 wireless LANs

    Science.gov (United States)

    Choi, Woo-Yong

    2017-01-01

    The DCF (Distributed Coordination Function) is the basic MAC (Medium Access Control) protocol of IEEE 802.11 wireless LANs and compatible with various IEEE 802.11 PHY extensions. The performance of the DCF degrades exponentially as the number of nodes participating in the DCF transmission procedure increases. To deal with this problem, we propose a simple, however efficient modification of the DCF by which the performance of the DCF is greatly enhanced.

  6. Measurement Control Workshop Instructional Materials

    Energy Technology Data Exchange (ETDEWEB)

    Gibbs, Philip [Brookhaven National Lab. (BNL), Upton, NY (United States); Crawford, Cary [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); McGinnis, Brent [Pacific Northwest National Lab. (PNNL), Richland, WA (United States) and Insolves LLC

    2014-04-01

    A workshop to teach the essential elements of an effective nuclear materials control and accountability (MC&A) programs are outlined, along with the modes of Instruction, and the roles and responsibilities of participants in the workshop.

  7. Measurement control workshop instructional materials

    Energy Technology Data Exchange (ETDEWEB)

    Gibbs, Philip [Brookhaven National Lab. (BNL), Upton, NY (United States); Crawford, Cary [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); McGinnis, Brent [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Insolves LLC, Piketon, OH (United States)

    2014-04-01

    A workshop to teach the essential elements of an effective nuclear materials control and accountability (MC&A) programs are outlined, along with the modes of Instruction, and the roles and responsibilities of participants in the workshop.

  8. Workshop on moisture buffer capacity

    DEFF Research Database (Denmark)

    2003-01-01

    Summary report of a Nordtest workshop on moisture buffer capacity held at Copenhagen August 21-22 2003......Summary report of a Nordtest workshop on moisture buffer capacity held at Copenhagen August 21-22 2003...

  9. WALLTURB International Workshop

    CERN Document Server

    Jimenez, Javier; Marusic, Ivan

    2011-01-01

    This book brings together selected contributions from the WALLTURB workshop on ”Understanding and modelling of wall turbulence” held in Lille, France, on April 21st to 23rd 2009. This workshop was organized by the WALLTURB consortium, in order to present to the relevant scientific community the main results of the project and to stimulate scientific discussions around the subject of wall turbulence. The workshop reviewed the recent progress in theoretical, experimental and numerical approaches to wall turbulence. The problems of zero pressure gradient, adverse pressure gradient and separating turbulent boundary layers were addressed in detail with the three approaches, using the most advanced tools. This book is a milestone in the research field, thanks to the high level of the invited speakers and the involvement of the contributors and a testimony of the achievement of the WALLTURB project.

  10. Chromosome 19 International Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Pericak-Vance, M.A. (Duke Univ., Durham, NC (United States). Medical Center); Ropers, H.H. (Univ. Hospital Nijmegen, (The Netherlands). Dept. of Human Genetics); Carrano, A.J. (Lawrence Livermore National Lab., CA (United States))

    1993-01-04

    The Second International Workshop on Human Chromosome 19 was hosted on January 25 and 26, 1992, by the Department of Human Genetics, University Hospital Nijmegen, The Netherlands, at the 'Meerdal Conference Center'. The workshop was supported by a grant from the European Community obtained through HUGO, the Dutch Research Organization (NWO) and the Muscular Dystrophy Association (MDA). Travel support for American participants was provided by the Department of Energy. The goals of this workshop were to produce genetic, physical and integrated maps of chromosome 19, to identify inconsistencies and gaps, and to discuss and exchange resources and techniques available for the completion of these maps. The second day of the meeting was largely devoted to region or disease specific efforts. In particular, the meeting served as a platform for assessing and discussing the recent progress made into the molecular elucidation of myotonic dystrophy.

  11. Workshop on molecular animation.

    Science.gov (United States)

    Bromberg, Sarina; Chiu, Wah; Ferrin, Thomas E

    2010-10-13

    From February 25 to 26, 2010, in San Francisco, the Resource for Biocomputing, Visualization, and Informatics (RBVI) and the National Center for Macromolecular Imaging (NCMI) hosted a molecular animation workshop for 21 structural biologists, molecular animators, and creators of molecular visualization software. Molecular animation aims to visualize scientific understanding of biomolecular processes and structures. The primary goal of the workshop was to identify the necessary tools for producing high-quality molecular animations, understanding complex molecular and cellular structures, creating publication supplementary materials and conference presentations, and teaching science to students and the public. Another use of molecular animation emerged in the workshop: helping to focus scientific inquiry about the motions of molecules and enhancing informal communication within and between laboratories.

  12. African Otter Workshop

    Directory of Open Access Journals (Sweden)

    Jan Reed-Smith

    2016-04-01

    Full Text Available All concerned thought this was an excellent workshop with important progress made towards creating a viable beginning of an African Otter Network. There is a long road ahead but the 2015 African Otter Workshop is a start on developing range country partners, activists and researchers as well as collaborating on issue identification and resolution which will assist in preserving at least some refugia for Africa’s otters. A list of actions was agreed on, including the creation of an African Otter Network website and social media network, apublic Otter Awareness facebook page, encouraging online reporting of otter sightings, conducting otter awareness surveys, and emphasising the need for communication with the public, other members of the network and other professionals. information not shared or documented is information LOST. A Second African Otter Workshop should be held in 2017 elsewhere in Africa to encourage attendance from a wider range of countries.

  13. QCD Evolution Workshop

    CERN Document Server

    2015-01-01

    These are the proceedings of the QCD Evolution 2015 Workshop which was held 26–30 May, 2015 at Jefferson Lab, Newport News, Virginia, USA. The workshop is a continuation of a series of workshops held during four consecutive years 2011, 2012, 2013 at Jefferson Lab, and in 2014 in Santa Fe, NM. With the rapid developments in our understanding of the evolution of parton distributions including low-x, TMDs, GPDs, higher-twist correlation functions, and the associated progress in perturbative QCD, lattice QCD and effective field theory techniques we look forward with great enthusiasm to the 2015 meeting. A special attention was also paid to participation of experimentalists as the topics discussed are of immediate importance for the JLab 12 experimental program and a future Electron Ion Collider.

  14. Vulcano Workshop 2016

    CERN Document Server

    2016-01-01

    We announce the XVI Vulcano Workshop, which will be held from May 22nd to May 28th, 2016 in the Vulcano Island (Sicily, Italy). As in the past editions, the workshop will aim to gather people from High Energy Astrophysics and Particle Physics to discuss the most recent highlights in these fields. The workshop will cover the following topics: Astrophysics/Cosmology, Astrophysics/Gravity, Dark Matter, Particle Physics, Cosmic Rays, Gamma/Neutrino Astronomy, Neutrinos and Future Prospects. The scientific program will include several 30-minute review talks, to introduce the current problems, and 20-minute talks, giving new experimental and theoretical results. The participation is by invitation and limited to 80 people.

  15. IEEE Solid-State Sensors Workshop Held in Hilton Head Island, South Carolina, on 2-5 June 1986

    Science.gov (United States)

    1987-06-01

    systems tnder NnormalV physiological condi- minimally disturbed which implies that the diffusion tions. Two sensor technologies which take particular...Thomas, CA, Springer,PA, LoebGE, Berwald- Netter ,Y, Okun,LM. A miniature microelectrode The study of the electrical activity of brain and array to... physiological solution at room tempera- ture. Physiological solution simulates blood in its Cl -concentration and pH (7.4). Every hour the solutionA sensor

  16. Proceedings 3rd NASA/IEEE Workshop on Formal Approaches to Agent-Based Systems (FAABS-III)

    Science.gov (United States)

    Hinchey, Michael (Editor); Rash, James (Editor); Truszkowski, Walt (Editor); Rouff, Christopher (Editor)

    2004-01-01

    These preceedings contain 18 papers and 4 poster presentation, covering topics such as: multi-agent systems, agent-based control, formalism, norms, as well as physical and biological models of agent-based systems. Some applications presented in the proceedings include systems analysis, software engineering, computer networks and robot control.

  17. IEEE Workshop on Real-Time Operating Systems (8th) Held in Atlanta, Georgia on 15-17 May 1991

    Science.gov (United States)

    1992-01-01

    reported here. p Poisoeo Ssrt Times Poiss.. St.t Tim.. W.ib.i I.t...S.l.n Times WtibU iattt.Sts.s Times Uaifor., Cop. Tim.. Exp..tstill Comp. Time. Usiforra...Allen Precision Engineering Center North Carolina State University ABSTRACT Cyclic serial computational applications can be decomposed into multiple...or evaluating the validity of the application’s cyclic deadline. TilE APPLICATION A real time machine control application can be abstractly described

  18. NX15 science workshop

    CERN Multimedia

    2015-01-01

    Science. For some of us, it's daunting or maybe even terrifying. How to tell a good science story? That's the question we will explore together in this workshop. Conceived and produced by journalist and Scientific News producer Claudio Rosmino of Euronews, and presented by Euronews' Jeremy Wilks, the workshop will look at actual case studies (from Euronews and beyond) where science news proved exciting, inspiring and accessible to audiences around the world. These might include the Rosetta mission and CERN's work on Science for Peace. Together, we'll share ideas and knowledge around how science journalism and science news can increase its visibility in the media and maybe save the planet...!

  19. 2015 Workshop on Continuations

    DEFF Research Database (Denmark)

    his volume contains the papers presented at WoC 2015, the Workshop on Continuations held at ETAPS 2015. There were four submissions. Each of them was reviewed by, on the average, three PC members. The committee decided to accept three papers. The program also includes one invited talk. It also...... documents the depth, variety, and richness of continuations with four distilled tutorials. Thanks are due to the local organizers of ETAPS 2015 for the infras- tructure and to the general chairman of WoC 2015, Ugo de'Liguoro, for initiating this workshop and making it happen...

  20. Workshops as a Research Methodology

    DEFF Research Database (Denmark)

    Ørngreen, Rikke; Levinsen, Karin Tweddell

    2017-01-01

    This paper contributes to knowledge on workshops as a research methodology, and specifically on how such workshops pertain to e-learning. A literature review illustrated that workshops are discussed according to three different perspectives: workshops as a means, workshops as practice, and worksh......This paper contributes to knowledge on workshops as a research methodology, and specifically on how such workshops pertain to e-learning. A literature review illustrated that workshops are discussed according to three different perspectives: workshops as a means, workshops as practice......, and workshops as a research methodology. Focusing primarily on the latter, this paper presents five studies on upper secondary and higher education teachers’ professional development and on teaching and learning through video conferencing. Through analysis and discussion of these studies’ findings, we argue...... that workshops provide a platform that can aid researchers in identifying and exploring relevant factors in a given domain by providing means for understanding complex work and knowledge processes that are supported by technology (for example, e-learning). The approach supports identifying factors...

  1. Report of the Orientation Workshop

    DEFF Research Database (Denmark)

    Nunez, Heilyn Camacho; Buus, Lillian; Ogange, Betty

    2014-01-01

    This Orientation Workshops is part of MAAGART project. The workshop is divided in three parts: 1) pre-Orientation Workshop stage, 2) Face-to-Face stage and 3) post-Orientation stage. Pre and post stages will be developed online. All the activities will take place in a virtual learning environment...... the third stage....

  2. Method of Testing High Speed Digital Network Based on IEEE 1149. 6 Standard%基于IEEE 1149.6标准的高速数字网络测试方法

    Institute of Scientific and Technical Information of China (English)

    尤路

    2015-01-01

    As requirement of high speed signal testing increases gradually, the application prospect of the IEEE 1149. 6 standard becomes more and more extensively. Starting from generation of IEEE 1149. 6 standard, the difference between the IEEE 1149. 1 and IEEE 1149. 6 standards is introduced. The fault type of the IEEE 1149. 6 standard is introduced in detail by way of test verification example. This method is functioned obviously in testing high speed digital circuit channel.%随着高速信号测试需求的逐渐增加,IEEE 1149.6标准的应用前景越来越广,本文从IEEE 1149.6标准的产生入手,主要介绍了IEEE 1149.6标准与IEEE 1149.1标准的区别,后文中通过测试验证实例,详细介绍了IEEE 1149.6标准中的故障类型,该方法目前已在数字电路高速通道测试中凸显作用。

  3. 4th Workshop on Combinations of Intelligent Methods and Applications

    CERN Document Server

    Palade, Vasile; Prentzas, Jim

    2016-01-01

    This volume includes extended and revised versions of the papers presented at the 4th Workshop on “Combinations of Intelligent Methods and Applications” (CIMA 2014) which was intended to become a forum for exchanging experience and ideas among researchers and practitioners dealing with combinations of different intelligent methods in Artificial Intelligence. The aim is to create integrated or hybrid methods that benefit from each of their components. Some of the existing presented efforts combine soft computing methods (fuzzy logic, neural networks and genetic algorithms). Another stream of efforts integrates case-based reasoning or machine learning with soft-computing methods. Some of the combinations have been more widely explored, like neuro-symbolic methods, neuro-fuzzy methods and methods combining rule-based and case-based reasoning. CIMA 2014 was held in conjunction with the 26th IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2014). .

  4. Fourth-generation concentrator system: From the lab to the factory to the field

    Energy Technology Data Exchange (ETDEWEB)

    O`Neill, M.J.; McDanal, A.J. [ENTECH, Inc., Dallas-Fort Worth Airport, TX (United States)

    1994-12-31

    In the May 1993 IEEE PVSC paper, the authors described improvements in manufacturing technology which the authors team was developing to mass-produce their new fourth-generation concentrator module. In the past 18 months, they have completed the development of this new module. They are currently producing over 600 modules of the new type, equivalent to more than 250 kW of rates power output. Most of these modules are presently being deployed in two utility-scale power plants owned by the two largest utility companies in Texas: (i) a 100 kW system near Ft. Davis, Texas, at the Solar Park being developed by Central and South West (C and SW); and (ii) a 100 kW system near Dallas, Texas, at the Energy Park being developed by TU Electric (TUE). Thus, the module technology the authors described at the last PVSC has progressed from the laboratory to the factory floor to the field.

  5. IEEE Xplore® Digital Library. Quick user guides

    OpenAIRE

    2014-01-01

    Представлены руководства по работе с платформой IEEE Xplore® Digital Library, содержащей ресурсы в области электроники, радиосвязи, вычислительной техники, информационных технологий, энергетики, машиностроения, физики, химии, геологии, нанотехнологий на английском языке. Руководства: 1) Started with Your Search - Поиск, уточнение результатов, доступ к полнотекстовым документам, сохранение поисковых резкльтатов, расширенные функции; 2) Search and Save with Your File Cabinet - Поиск, уточнен...

  6. Second Quaternary dating workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-11-01

    The second Quaternary dating methods workshop was held at Lucas Heights and sponsored by ANSTO and AINSE. Topics covered include, isotope and thermoluminescence dating, usage of accelerator and thermal ionisation mass spectrometry in environmental studies emphasizing on the methodologies used and sample preparation

  7. Flywheel energy storage workshop

    Energy Technology Data Exchange (ETDEWEB)

    O`Kain, D.; Carmack, J. [comps.

    1995-12-31

    Since the November 1993 Flywheel Workshop, there has been a major surge of interest in Flywheel Energy Storage. Numerous flywheel programs have been funded by the Advanced Research Projects Agency (ARPA), by the Department of Energy (DOE) through the Hybrid Vehicle Program, and by private investment. Several new prototype systems have been built and are being tested. The operational performance characteristics of flywheel energy storage are being recognized as attractive for a number of potential applications. Programs are underway to develop flywheels for cars, buses, boats, trains, satellites, and for electric utility applications such as power quality, uninterruptible power supplies, and load leveling. With the tremendous amount of flywheel activity during the last two years, this workshop should again provide an excellent opportunity for presentation of new information. This workshop is jointly sponsored by ARPA and DOE to provide a review of the status of current flywheel programs and to provide a forum for presentation of new flywheel technology. Technology areas of interest include flywheel applications, flywheel systems, design, materials, fabrication, assembly, safety & containment, ball bearings, magnetic bearings, motor/generators, power electronics, mounting systems, test procedures, and systems integration. Information from the workshop will help guide ARPA & DOE planning for future flywheel programs. This document is comprised of detailed viewgraphs.

  8. FINPIE/97. Workshop proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    This publication contains the proceedings of 1997 Finnish Workshop on Power and Industrial Electronics, held in Espoo, Finland, on 26 August, 1997. The programme consisted of technical sessions on Advanced AC Motor Control, Electric Machines and Drives, Advanced Control and Measurement, Power Electronics Systems, Modelling and Simulation, and Power Converters

  9. International phosphorus workshop

    DEFF Research Database (Denmark)

    Kronvang, Brian; Rubæk, Gitte Holton; Heckrath, Goswin

    2009-01-01

    the main outcomes of the workshop and the special collection of eight papers. Moreover, we identify the main gaps in our knowledge and future research directions on P, which are linked to important issues such as addressing scale effects, improved P models with the ability to quantify uncertainty...

  10. Workshop on Mathematical Physics

    CERN Document Server

    2016-01-01

    This two-day workshop will include seminars by mathematicians and physicists on topics of mutual interest. It will precede the 31st International Colloquium on Group Theoretical Methods in Physics which will be held in Rio de Janeiro from June 19-25.

  11. Workshop on hybrid rice

    Institute of Scientific and Technical Information of China (English)

    TANZhijun

    1994-01-01

    FAO, in collaboration with FEDEARROZ in Colombia and EMBRAPA / CNPAF in Brail, organized a workshop on the Establishment of a Coorperative Research Network on Hybrid Rice in Latin America and the Caribbean held from Mar 16 to 18, 1994 at EMBRAPA/CNPAF in Brazil. Dr MAO Changxiang,

  12. Workshop on Molecular Evolution

    Science.gov (United States)

    Cummings, Michael P.

    2004-01-01

    Molecular evolution has become the nexus of many areas of biological research. It both brings together and enriches such areas as biochemistry, molecular biology, microbiology, population genetics, systematics, developmental biology, genomics, bioinformatics, in vitro evolution, and molecular ecology. The Workshop provides an important contribution to these fields in that it promotes interdisciplinary research and interaction, and thus provides a glue that sticks together disparate fields. Due to the wide range of fields addressed by the study of molecular evolution, it is difficult to offer a comprehensive course in a university setting. It is rare for a single institution to maintain expertise in all necessary areas. In contrast, the Workshop is uniquely able to provide necessary breadth and depth by utilizing a large number of faculty with appropriate expertise. Furthermore, the flexible nature of the Workshop allows for rapid adaptation to changes in the dynamic field of molecular evolution. For example, the 2003 Workshop included recently emergent research areas of molecular evolution of development and genomics.

  13. Summary of cosmology workshop

    Indian Academy of Sciences (India)

    Tarun Sandeep

    2004-10-01

    Cosmology is passing through a golden phase of rapid advance. The cosmology workshop at ICGC-2004 attracted a large number of research contributions to diverse topics of cosmology. I attempt to classify and summarize the research work and results of the oral and poster presentations made at the meeting.

  14. Dynamic defense workshop :

    Energy Technology Data Exchange (ETDEWEB)

    Crosby, Sean Michael; Doak, Justin E.; Haas, Jason Juedes.; Helinski, Ryan; Lamb, Christopher C.

    2013-02-01

    On September 5th and 6th, 2012, the Dynamic Defense Workshop: From Research to Practice brought together researchers from academia, industry, and Sandia with the goals of increasing collaboration between Sandia National Laboratories and external organizations, de ning and un- derstanding dynamic, or moving target, defense concepts and directions, and gaining a greater understanding of the state of the art for dynamic defense. Through the workshop, we broadened and re ned our de nition and understanding, identi ed new approaches to inherent challenges, and de ned principles of dynamic defense. Half of the workshop was devoted to presentations of current state-of-the-art work. Presentation topics included areas such as the failure of current defenses, threats, techniques, goals of dynamic defense, theory, foundations of dynamic defense, future directions and open research questions related to dynamic defense. The remainder of the workshop was discussion, which was broken down into sessions on de ning challenges, applications to host or mobile environments, applications to enterprise network environments, exploring research and operational taxonomies, and determining how to apply scienti c rigor to and investigating the eld of dynamic defense.

  15. Workshop on DNA repair.

    NARCIS (Netherlands)

    A.R. Lehmann (Alan); J.H.J. Hoeijmakers (Jan); A.A. van Zeeland (Albert); C.M.P. Backendorf (Claude); B.A. Bridges; A. Collins; R.P.D. Fuchs; G.P. Margison; R. Montesano; E. Moustacchi; A.T. Natarajan; M. Radman; A. Sarasin; E. Seeberg; C.A. Smith; M. Stefanini (Miria); L.H. Thompson; G.P. van der Schans; C.A. Weber (Christine); M.Z. Zdzienika

    1992-01-01

    textabstractA workshop on DNA repair with emphasis on eukaryotic systems was held, under the auspices of the EC Concerted Action on DNA Repair and Cancer, at Noordwijkerhout (The Netherlands) 14-19 April 1991. The local organization of the meeting was done under the auspices of the Medical Genetic C

  16. Beginnings Workshop: Mealtimes.

    Science.gov (United States)

    Gordon, Sarah A. Mulligan; And Others

    1997-01-01

    Contains four workshop presentations on meals in child care: (1) "Enjoying Family-Style Meals in Child Care" (Sarah A. Mulligan Gordon); (2) "The Making of a Healthy Eater: Winning the Finicky Eater Battle" (James M. Thomas and others); (3) "Food for Thought: Mealtimes can be Educational and Enjoyable, Too" (Karen…

  17. Radiation Source Replacement Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Griffin, Jeffrey W.; Moran, Traci L.; Bond, Leonard J.

    2010-12-01

    This report summarizes a Radiation Source Replacement Workshop in Houston Texas on October 27-28, 2010, which provided a forum for industry and researchers to exchange information and to discuss the issues relating to replacement of AmBe, and potentially other isotope sources used in well logging.

  18. Workshop One : Risk Analysis

    NARCIS (Netherlands)

    Carlson, T.J.; Jong, C.A.F. de; Dekeling, R.P.A.

    2012-01-01

    The workshop looked at the assessment of risk to aquatic animals exposed to anthropogenic sound. The discussion focused on marine mammals given the worldwide attention being paid to them at the present time, particularly in relationship to oil and gas exploration, ocean power, and increases in ship

  19. ATLAS TRT 2002 Workshop

    CERN Multimedia

    Capeans, M.

    Starting on 17th May, the ATLAS TRT 2002 Workshop was organised by Ken MacFarlane and his team at Hampton University, Virginia, USA. During a welcome break in the very dense workshop programme, the group enjoyed a half-day long boat trip along the waterways, offering a first-hand look at the history and heritage of this part of America. The attendance during the six-day workshop was about 50 people representing most of the collaborating institutes, although many Russian colleagues had stayed in their institutes to pursue the start-up of end-cap wheel production at PNPI and DUBNA. The meeting clearly showed that, during the year 2002, the TRT community is focusing on final design issues and module/wheel construction, while moving at the same time towards acceptance testing and integration, including the front-end electronics. The two main topics treated at the workshop were the preparation for beginning full production of the FE electronics, and the wire-joint problem that the US barrel colleagues have been fa...

  20. UVI Cyber-security Workshop Workshop Analysis.

    Energy Technology Data Exchange (ETDEWEB)

    Kuykendall, Tommie G. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Allsop, Jacob Lee [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Anderson, Benjamin Robert [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Boumedine, Marc [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Carter, Cedric [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Galvin, Seanmichael Yurko [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Gonzalez, Oscar [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Lee, Wellington K. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Lin, Han Wei [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Morris, Tyler Jake [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Nauer, Kevin S.; Potts, Beth A.; Ta, Kim Thanh; Trasti, Jennifer; White, David R.

    2015-07-08

    The cybersecurity consortium, which was established by DOE/NNSA’s Minority Serving Institutions Partnerships Program (MSIPP), allows students from any of the partner schools (13 HBCUs, two national laboratories, and a public school district) to have all consortia options available to them, to create career paths and to open doors to DOE sites and facilities to student members of the consortium. As a part of this year consortium activities, Sandia National Laboratories and the University of Virgin Islands conducted a week long cyber workshop that consisted of three courses; Digital Forensics and Malware Analysis, Python Programming, and ThunderBird Cup. These courses are designed to enhance cyber defense skills and promote learning within STEM related fields.

  1. The Fourth Wave in Deterrence Research

    OpenAIRE

    Knopf, Jeffrey W.

    2010-01-01

    The article of record as published may be located at http://dx.doi.org/10.1080/13523261003640819 A new line of work on deterrence began emerging after the end of the Cold War and gained momentum after the September 11 terrorist attacks. Building on a previous characterization by Robert Jervis that identified three waves of deterrence research,1 this work is here designated the fourth wave. The fourth wave reflects a change from a focus on relatively symmetrical situations of mu...

  2. Incorporating a Weight Management Skills Workshop in Pharmacy Curricula in Australia.

    Science.gov (United States)

    Um, Irene S; Krass, Ines; Armour, Carol; Gill, Timothy; Chaar, Betty B

    2016-05-25

    Objective. To develop, implement, and evaluate a competency-based weight management skills workshop for undergraduate pharmacy students in an Australian university. Design. A 3-hour workshop titled "Weight Management in Pharmacy" was implemented with a cohort of fourth-year undergraduate pharmacy students (n=180). Learning activities used included case-based learning, hands-on experience, role-play, and group discussion. Assessment. A 22-item attitudinal survey instrument and the validated Obesity Risk Knowledge (ORK-10) scale were administered at baseline and postworkshop to evaluate the impact of this educational workshop. There was significant improvement in the students' ORK scores and students' perceived level of self-confidence in performing weight management skills. Conclusion. An educational workshop designed to enhance professional competencies in weight management ensured graduates were "service-ready" and had the appropriate knowledge, skills, and attributes to deliver patient-centered pharmacy-based weight management services.

  3. IEEE 1547 and 2030 Standards for Distributed Energy Resources Interconnection and Interoperability with the Electricity Grid

    Energy Technology Data Exchange (ETDEWEB)

    Basso, T.

    2014-12-01

    Public-private partnerships have been a mainstay of the U.S. Department of Energy and the National Renewable Energy Laboratory (DOE/NREL) approach to research and development. These partnerships also include technology development that enables grid modernization and distributed energy resources (DER) advancement, especially renewable energy systems integration with the grid. Through DOE/NREL and industry support of Institute of Electrical and Electronics Engineers (IEEE) standards development, the IEEE 1547 series of standards has helped shape the way utilities and other businesses have worked together to realize increasing amounts of DER interconnected with the distribution grid. And more recently, the IEEE 2030 series of standards is helping to further realize greater implementation of communications and information technologies that provide interoperability solutions for enhanced integration of DER and loads with the grid. For these standards development partnerships, for approximately $1 of federal funding, industry partnering has contributed $5. In this report, the status update is presented for the American National Standards IEEE 1547 and IEEE 2030 series of standards. A short synopsis of the history of the 1547 standards is first presented, then the current status and future direction of the ongoing standards development activities are discussed.

  4. MATHEON Workshop 2013

    CERN Document Server

    Calderbank, Robert; Kutyniok, Gitta; Vybíral, Jan

    2015-01-01

    Since publication of the initial papers in 2006, compressed sensing has captured the imagination of the international signal processing community, and the mathematical foundations are nowadays quite well understood. Parallel to the progress in mathematics, the potential applications of compressed sensing have been explored by many international groups of, in particular, engineers and applied mathematicians, achieving very promising advances in various areas such as communication theory, imaging sciences, optics, radar technology, sensor networks, or tomography. Since many applications have reached a mature state, the research center MATHEON in Berlin focusing on "Mathematics for Key Technologies", invited leading researchers on applications of compressed sensing from mathematics, computer science, and engineering to the "MATHEON Workshop 2013: Compressed Sensing and its Applications” in December 2013. It was the first workshop specifically focusing on the applications of compressed sensing. This book featur...

  5. Accelerator reliability workshop

    Energy Technology Data Exchange (ETDEWEB)

    Hardy, L.; Duru, Ph.; Koch, J.M.; Revol, J.L.; Van Vaerenbergh, P.; Volpe, A.M.; Clugnet, K.; Dely, A.; Goodhew, D

    2002-07-01

    About 80 experts attended this workshop, which brought together all accelerator communities: accelerator driven systems, X-ray sources, medical and industrial accelerators, spallation sources projects (American and European), nuclear physics, etc. With newly proposed accelerator applications such as nuclear waste transmutation, replacement of nuclear power plants and others. Reliability has now become a number one priority for accelerator designers. Every part of an accelerator facility from cryogenic systems to data storage via RF systems are concerned by reliability. This aspect is now taken into account in the design/budget phase, especially for projects whose goal is to reach no more than 10 interruptions per year. This document gathers the slides but not the proceedings of the workshop.

  6. Spiral 2 workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The accelerator and experimental facilities at GANIL will be transformed over the next 5-10 years. The centerpiece of the additions to the accelerator complex will be Spiral-2. This is the first phase of a new radioactive beam facility based on the ISOL principle. The main aim of Spiral-2 will be to produce intense, high quality beams of neutron-rich nuclei created in neutron-induced fission of heavy elements and accelerated by the existing CIME cyclotron. The principal aims of this workshop will be a) to publicize the new facilities, b) to discuss and define the science which might be carried out with them, c) to discuss the instrumentation and infrastructure required to exploit the new facilities and d) to help form collaborations of scientists wishing to design and construct the equipment needed to undertake the science programme. This document gathers most of the slides presented in the workshop.

  7. PREFACE: Collapse Calderas Workshop

    Science.gov (United States)

    Gottsmann, Jo; Aguirre-Diaz, Gerardo

    2008-10-01

    Caldera-formation is one of the most awe-inspiring and powerful displays of nature's force. Resultant deposits may cover vast areas and significantly alter the immediate topography. Post-collapse activity may include resurgence, unrest, intra-caldera volcanism and potentially the start of a new magmatic cycle, perhaps eventually leading to renewed collapse. Since volcanoes and their eruptions are the surface manifestation of magmatic processes, calderas provide key insights into the generation and evolution of large-volume silicic magma bodies in the Earth's crust. Despite their potentially ferocious nature, calderas play a crucial role in modern society's life. Collapse calderas host essential economic deposits and supply power for many via the exploitation of geothermal reservoirs, and thus receive considerable scientific, economic and industrial attention. Calderas also attract millions of visitors world-wide with their spectacular scenic displays. To build on the outcomes of the 2005 calderas workshop in Tenerife (Spain) and to assess the most recent advances on caldera research, a follow-up meeting was proposed to be held in Mexico in 2008. This abstract volume presents contributions to the 2nd Calderas Workshop held at Hotel Misión La Muralla, Querétaro, Mexico, 19-25 October 2008. The title of the workshop `Reconstructing the evolution of collapse calderas: Magma storage, mobilisation and eruption' set the theme for five days of presentations and discussions, both at the venue as well as during visits to the surrounding calderas of Amealco, Amazcala and Huichapan. The multi-disciplinary workshop was attended by more than 40 scientist from North, Central and South America, Europe, Australia and Asia. Contributions covered five thematic topics: geology, geochemistry/petrology, structural analysis/modelling, geophysics, and hazards. The workshop was generously supported by the International Association of Volcanology and the Chemistry of The Earth's Interior

  8. Solar workshops financial incentives

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-01-01

    Ten one-day workshops were held across the United States. Information in this workbook is compiled in conjunction with those workshops. The following discussions are included: solar as a fuel (history); why alternative fuels are being sought today; the need for conservation; advantages of solar energy; the potential of solar energy; why solar energy is not more widely used; a definition of solar; how solar can help meet energy demands; Federal policies and programs; what solar technologies exist today that can be effectively utilized (thermal applications, fuels from biomass, solar electric). Additional information is presented in three attachments: Energy-Conserving Methods; Domestic Policy Review of Solar Energy; and DOE Secretary's Annual Report to Congress-Solar Section. (MCW)

  9. Imaging Sciences Workshop Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Candy, J.V.

    1996-11-21

    This report contains the proceedings of the Imaging Sciences Workshop sponsored by C.A.S.LS., the Center for Advanced Signal & Image Sciences. The Center, established primarily to provide a forum where researchers can freely exchange ideas on the signal and image sciences in a comfortable intellectual environment, has grown over the last two years with the opening of a Reference Library (located in Building 272). The Technical Program for the 1996 Workshop include a variety of efforts in the Imaging Sciences including applications in the Microwave Imaging, highlighted by the Micro-Impulse Radar (MIR) system invented at LLNL, as well as other applications in this area. Special sessions organized by various individuals in Speech, Acoustic Ocean Imaging, Radar Ocean Imaging, Ultrasonic Imaging, and Optical Imaging discuss various applica- tions of real world problems. For the more theoretical, sessions on Imaging Algorithms and Computed Tomography were organized as well as for the more pragmatic featuring a session on Imaging Systems.

  10. Proceedings of the first international workshop on domain-specific languages for robotic systems (DSLRob 2010)

    CERN Document Server

    Schultz, Ulrik P; Ziane, Mikal

    2011-01-01

    The First International Workshop on Domain-Specific Languages and models for ROBotic systems (DSLRob'10) was held at the 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'10), October 2010 in Taipei, Taiwan. The main topics of the workshop were domain-specific languages and models. A domain-specific language (DSL) is a programming language dedicated to a particular problem domain that offers specific notations and abstractions that increase programmer productivity within that domain. Models offer a high-level way for domain users to specify the functionality of their system at the right level of abstraction. DSLs and models have historically been used for programming complex systems. However recently they have garnered interest as a separate field of study. Robotic systems blend hardware and software in a holistic way that intrinsically raises many crosscutting concerns (concurrency, uncertainty, time constraints, ...), for which reason, traditional general-purpose languages often...

  11. Imaging sciences workshop

    Energy Technology Data Exchange (ETDEWEB)

    Candy, J.V.

    1994-11-15

    This workshop on the Imaging Sciences sponsored by Lawrence Livermore National Laboratory contains short abstracts/articles submitted by speakers. The topic areas covered include the following: Astronomical Imaging; biomedical imaging; vision/image display; imaging hardware; imaging software; Acoustic/oceanic imaging; microwave/acoustic imaging; computed tomography; physical imaging; imaging algorithms. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

  12. Aims of the Workshop

    CERN Document Server

    Dornan, P J

    2010-01-01

    There are challenges and opportunities for the European particle physics community to engage with innovative and exciting developments which could lead to precision measurements in the neutrino sector. These have the potential to yield significant advances in the understanding of CP violation, the flavour riddle and theories beyond the Standard Model. This workshop aims to start the process of a dialogue in Europe so that informed decisions on the appropriate directions to pursue can be made in a few years time.

  13. Probability workshop to be better in probability topic

    Science.gov (United States)

    Asmat, Aszila; Ujang, Suriyati; Wahid, Sharifah Norhuda Syed

    2015-02-01

    The purpose of the present study was to examine whether statistics anxiety and attitudes towards probability topic among students in higher education level have an effect on their performance. 62 fourth semester science students were given statistics anxiety questionnaires about their perception towards probability topic. Result indicated that students' performance in probability topic is not related to anxiety level, which means that the higher level in statistics anxiety will not cause lower score in probability topic performance. The study also revealed that motivated students gained from probability workshop ensure that their performance in probability topic shows a positive improvement compared before the workshop. In addition there exists a significance difference in students' performance between genders with better achievement among female students compared to male students. Thus, more initiatives in learning programs with different teaching approaches is needed to provide useful information in improving student learning outcome in higher learning institution.

  14. 3rd International Workshop on Turbulent Spray Combustion

    CERN Document Server

    Gutheil, Eva

    2014-01-01

    This book reflects the results of the 2nd and 3rd International Workshops on Turbulent Spray Combustion. The focus is on progress in experiments and numerical simulations for two-phase flows, with emphasis on spray combustion. Knowledge of the dominant phenomena and their interactions allows development of predictive models and their use in combustor and gas turbine design. Experts and young researchers present the state-of-the-art results, report on the latest developments and exchange ideas in the areas of experiments, modelling and simulation of reactive multiphase flows. The first chapter reflects on flame structure, auto-ignition and atomization with reference to well-characterized burners, to be implemented by modellers with relative ease. The second chapter presents an overview of first simulation results on target test cases, developed at the occasion of the 1st International Workshop on Turbulent Spray Combustion. In the third chapter, evaporation rate modelling aspects are covered, while the fourth ...

  15. The ROS Workshop

    CERN Multimedia

    Francis, D.

    The first week of February saw the taking place of the ReadOut Subsystem (ROS) workshop. The ROS is the subsystem of the Trigger, DAQ & DCS project which receives and buffers data from the detector ReadOut Drivers (RODs). On request it then provides a subset of this buffered data, the so-called Regions of Interest (RoI), to the Level 2 trigger. Using the subsequent Level 2 trigger decision, the ROS either removes the buffered event data from its buffers or sends the full event data to the Event Filter for further processing. The workshop took place over a four-day period at a location in the Jura. The average daily attendance was twenty people, which mainly represented the five main ATLAS institutes currently engaged in this Trigger, DAQ & DCS activity. The aim of the workshop was to bring to an end the current prototyping activities in this area and launch the next, final, phase of prototyping. This new phase of prototyping will build on the successful activities of the previous phase and will focus...

  16. Grid and Entrepreneurship Workshop

    CERN Multimedia

    2006-01-01

    The CERN openlab is organising a special workshop about Grid opportunities for entrepreneurship. This one-day event will provide an overview of what is involved in spin-off technology, with a special reference to the context of computing and data Grids. Lectures by experienced entrepreneurs will introduce the key concepts of entrepreneurship and review, in particular, the industrial potential of EGEE (the EU co-funded Enabling Grids for E-sciencE project, led by CERN). Case studies will be given by CEOs of European start-ups already active in the Grid and computing cluster area, and regional experts will provide an overview of efforts in several European regions to stimulate entrepreneurship. This workshop is designed to encourage students and researchers involved or interested in Grid technology to consider the entrepreneurial opportunities that this technology may create in the coming years. This workshop is organized as part of the CERN openlab student programme, which is co-sponsored by CERN, HP, ...

  17. Performance Analysis of Sleep Mode Operation in IEEE 802.16m Mobile WiMAX

    Science.gov (United States)

    Baek, Sangkyu; Son, Jung Je; Choi, Bong Dae

    We mathematically analyze the sleep mode operation of IEEE 802.16m. The sleep mode operation for downlink traffic is modeled as a 3-dimensional discrete time Markov chain. We obtain the average power consumption of a mobile station and the average delay of a message. Numerical results match simulations very well. Numerical results show that there is a tradeoff between power consumption and message delay. We find the optimal lengths of sleep cycle and close-down time that minimize the power consumption while satisfying the quality of service (QoS) constraint on message delay. The power consumption of the sleep mode in IEEE 802.16m is better than that of sleep modes in legacy IEEE 802.16e standard under the same delay bound.

  18. Design of handoff procedures for broadband wireless access IEEE 802.16 based networks

    Directory of Open Access Journals (Sweden)

    V. Rangel–Licea

    2008-01-01

    Full Text Available IEEE 802.16 is a protocol for fixed broad band wire less access that is currently trying to add mobility among mobile users in the standard. However, mobility adds some technical barriers that should be solved first, this is the case of HO "handoff" (change of connection between two base stations "BS" by a mobile user. In this paper, the problem of HO in IEEE 802.16 is approached try ing to maintain the quality of service (QoS of mobile users. A mechanism for changing connection during HO is pre sented. A simulation model based on OPNET MODELER1 was developed to evaluate the performance of the proposed HO mechanism. Finally, this paper demonstrates that it is possible to implement a seam less HO mech a nism over IEEE 802.16 even for users with de manding applications such as voice over IP.

  19. An Analytical Model for the Performance Analysis of Concurrent Transmission in IEEE 802.15.4

    Directory of Open Access Journals (Sweden)

    Cengiz Gezer

    2014-03-01

    Full Text Available Interference is a serious cause of performance degradation for IEEE802.15.4 devices. The effect of concurrent transmissions in IEEE 802.15.4 has been generally investigated by means of simulation or experimental activities. In this paper, a mathematical framework for the derivation of chip, symbol and packet error probability of a typical IEEE 802.15.4 receiver in the presence of interference is proposed. Both non-coherent and coherent demodulation schemes are considered by our model under the assumption of the absence of thermal noise. Simulation results are also added to assess the validity of the mathematical framework when the effect of thermal noise cannot be neglected. Numerical results show that the proposed analysis is in agreement with the measurement results on the literature under realistic working conditions.

  20. Improving IEEE 802.15.4 for Low-Latency Energy-Efficient Industrial Applications

    Science.gov (United States)

    Chen, Feng

    The IEEE 802.15.4 standard for LR-WPAXs is becoming a de-facto standard for Wireless Sensor Xetworks (WSXs) applications in industrial fields. In this paper, we evaluate the latency performance of the IEEE 802.15.4 protocol based on a typical industrial scenario: a star network with 20 devices that send short messages (1 Byte) to the PAX coordinator. We analyzed the behavior of the GTS mechanism in the standard analytically. The results reveal essential limitations of the standard for low-latency applications in automation environments. According to our findings, we propose an enhanced protocol version that fully supports industry demands on low-latency communication. Our protocol version uses the original physical layer and, thus, can be implemented conveniently using cheap IEEE 802.15.4 hardware. The analytical results prove that we are able to meet the guaranteed low latency of 10 ms as specified by typical automation environments.

  1. The scalable coherent interface, IEEE P1596, status and possible applications to data acquisition and physics

    Energy Technology Data Exchange (ETDEWEB)

    Gustavson, D.B.

    1990-01-01

    IEEE P1596, the Scalable Coherent Interface (formerly known as SuperBus) is based on experience gained while developing Fastbus (ANSI/IEEE 960-1986, IEC 935), Futurebus (IEEE P896.x) and other modern 32-bit buses. SCI goals include a minimum bandwidth of 1 GByte/sec per processor in multiprocessor systems with thousands of processors; efficient support of a coherent distributed-cache image of distributed shared memory; support for repeaters which interface to existing or future buses; and support for inexpensive small rings as well as for general switched interconnections like Banyan, Omega, or crossbar networks. This paper presents a summary of current directions, reports the status of the work in progress, and suggests some applications in data acquisition and physics. 7 refs.

  2. An Analytical Model for the Performance Analysis of Concurrent Transmission in IEEE 802.15.4

    Science.gov (United States)

    Gezer, Cengiz; Zanella, Alberto; Verdone, Roberto

    2014-01-01

    Interference is a serious cause of performance degradation for IEEE802.15.4 devices. The effect of concurrent transmissions in IEEE 802.15.4 has been generally investigated by means of simulation or experimental activities. In this paper, a mathematical framework for the derivation of chip, symbol and packet error probability of a typical IEEE 802.15.4 receiver in the presence of interference is proposed. Both non-coherent and coherent demodulation schemes are considered by our model under the assumption of the absence of thermal noise. Simulation results are also added to assess the validity of the mathematical framework when the effect of thermal noise cannot be neglected. Numerical results show that the proposed analysis is in agreement with the measurement results on the literature under realistic working conditions. PMID:24658624

  3. IEEE 1451.2 based Smart sensor system using ADuc847

    Science.gov (United States)

    Sreejithlal, A.; Ajith, Jose

    IEEE 1451 standard defines a standard interface for connecting transducers to microprocessor based data acquisition systems, instrumentation systems, control and field networks. Smart transducer interface module (STIM) acts as a unit which provides signal conditioning, digitization and data packet generation functions to the transducers connected to it. This paper describes the implementation of a microcontroller based smart transducer interface module based on IEEE 1451.2 standard. The module, implemented using ADuc847 microcontroller has 2 transducer channels and is programmed using Embedded C language. The Sensor system consists of a Network Controlled Application Processor (NCAP) module which controls the Smart transducer interface module (STIM) over an IEEE1451.2-RS232 bus. The NCAP module is implemented as a software module in C# language. The hardware details, control principles involved and the software implementation for the STIM are described in detail.

  4. A 1-GHz charge pump PLL frequency synthesizer for IEEE 1394b PHY

    DEFF Research Database (Denmark)

    Ji, J.; Liu, H.; Li, Q.

    2012-01-01

    This paper presents an implementation of multi-rate SerDes transceiver for IEEE 1394b applications. Simple and effective pre-emphasis and equalizer circuits are used at transmitter and receiver, respectively. A phase interpolator based clock and data recovery circuit with optimized linearity...... is also described. With an on-chip fully integrated phase locked loop, the transceiver works at data rates of 100Mb/s, 400Mb/s and 800Mb/s, supporting three different operating modes of S100b, S400b and S800b for IEEE 1394b. The chip has been fabricated using 0.13μm technology. The die area of transceiver...... is 2.9*1.6 mm including bonding pads and the total power dissipation is 284 mW with 1.2V and 3.3V supply voltages. © 2012 IEEE....

  5. Throughput and delay analysis of IEEE 802.15.6-based CSMA/CA protocol.

    Science.gov (United States)

    Ullah, Sana; Chen, Min; Kwak, Kyung Sup

    2012-12-01

    The IEEE 802.15.6 is a new communication standard on Wireless Body Area Network (WBAN) that focuses on a variety of medical, Consumer Electronics (CE) and entertainment applications. In this paper, the throughput and delay performance of the IEEE 802.15.6 is presented. Numerical formulas are derived to determine the maximum throughput and minimum delay limits of the IEEE 802.15.6 for an ideal channel with no transmission errors. These limits are derived for different frequency bands and data rates. Our analysis is validated by extensive simulations using a custom C+ + simulator. Based on analytical and simulation results, useful conclusions are derived for network provisioning and packet size optimization for different applications.

  6. An analytical model for the performance analysis of concurrent transmission in IEEE 802.15.4.

    Science.gov (United States)

    Gezer, Cengiz; Zanella, Alberto; Verdone, Roberto

    2014-03-20

    Interference is a serious cause of performance degradation for IEEE802.15.4 devices. The effect of concurrent transmissions in IEEE 802.15.4 has been generally investigated by means of simulation or experimental activities. In this paper, a mathematical framework for the derivation of chip, symbol and packet error probability of a typical IEEE 802.15.4 receiver in the presence of interference is proposed. Both non-coherent and coherent demodulation schemes are considered by our model under the assumption of the absence of thermal noise. Simulation results are also added to assess the validity of the mathematical framework when the effect of thermal noise cannot be neglected. Numerical results show that the proposed analysis is in agreement with the measurement results on the literature under realistic working conditions.

  7. Design and Implementation of IEEE 802.15.4 Mac Protocol on FPGA

    CERN Document Server

    Bhat, Naagesh S

    2012-01-01

    The IEEE 802.15.4 is a wireless standard introduced for low power, low cost wireless communication with moderate data rates. In the next few years, it is expected that Low Rate Wireless Personal Area Networks (LR-WPAN) will be used in a wide variety of embedded applications, including home automation, industrial sensing and control, environmental monitoring and sensing. In these applications, numerous embedded devices running on batteries are distributed in an area communicating via wireless radios. This work presents a method which can be used for comparing current consumption of wireless data transfer embedded systems. This paper implements a small subset of the IEEE 802.15.4 protocol to achieve a point to point communication. The implemented protocol uses 802.15.4 MAC compliant data and acknowledgment packets. Current consumption is measured while doing one data packet transmission. Measurements are compared with existing work. IEEE 802.15.4 protocol implementation is done using Verilog language. Code impl...

  8. PERFORMANCE STUDY OF DISTRIBUTED COORDINATION FUNCTION OVER IEEE 802.11A PHYSICAL LAYER

    Directory of Open Access Journals (Sweden)

    S. SELVAKENEDDY

    2006-06-01

    Full Text Available IEEE 802.11a is one of the latest standards to be released by the IEEE Project 802 for wireless LANs. It has specified an additional physical layer (PHY to support higher data rates, and is termed as the orthogonal frequency division multiplexing (OFDM. In order to exploit its benefits, one of the medium access control (MAC protocols specified in the IEEE 802.11 specification is called distributed coordination function (DCF. DCF is a carrier sense multiple access with collision avoidance (CSMA/CA scheme with slotted binary exponential backoff. The frames can be transmitted using the basic access scheme or the RTS/CTS scheme in DCF. It was demonstrated previously that the RTS/CTS mechanism works well in most scenarios for the previously specified PHYs. In this work, a simple simulator is developed to verify the scalability of the RTS/CTS mechanism over OFDM PHY, which supports much higher data rates.

  9. 基于IEEE 1149.X标准的测试技术研究%Research of the Test Techniques Based on IEEE 1149.X

    Institute of Scientific and Technical Information of China (English)

    姜鹏; 沈绪榜

    2004-01-01

    IEEE1149标准及其子标准是基于边界扫描的测试技术,它们针对不同的应用环境采用相应的技术标准.它们所提供的解决方案极大地方便了芯片级、板级、系统级及数字网络的测试.本文讨论了IEEE1149.X中各标准的原理、结构,分析了各项技术的发展及应用,并举例说明了在实际中的测试应用.

  10. 结合案例探讨IEEE 802.X协议检索策略%Analysis of Search of IEEE 802.X Protocol Associated with Actual Cases

    Institute of Scientific and Technical Information of China (English)

    李玉萍

    2015-01-01

    在涉及IEEE 802.X的发明专利申请的检索过程中,仅在专利数据库中很难检索到与专利申请最接近的现有技术,常常需要转到非专利数据库进行检索,通过两个实际案例,探讨了如何对涉及IEEE 802.X协议的发明专利申请进行有效检索,从而提出一种准确、快速、高效地检索现有技术的方法,为审查工作提供参考,也为该领域的发明人、申请人提供更多的现有技术检索思路和方式.

  11. 2014 Penn State Bioinorganic Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Golbeck, John [Pennsylvania State Univ., State College, PA (United States)

    2015-10-01

    The 3rd Penn State Bioinorganic Workshop took place in early June 2014 and was combined with the 3rd Penn State Frontiers in Metallobiochemistry Symposium. The workshop was even larger than the 2nd Penn State Bioinorganic Workshop we offered in 2012. It had even more participants (162 rather than 123 in 2012). Like the 2012 workshop, the 2014 workshop had three parts. The first part consisted of 16 90-minute lectures presented by faculty experts on the topic of their expertise (see below). Based on the suggestions from the 2012 workshop, we have recorded all 16 lectures professionally and make them available to the entire bioinorganic community via online streaming. In addition, hard copies of the recordings are available as backup.

  12. Architectures, Concepts and Technologies for Service Oriented Computing : proceedings of ACT4SOC 2010, 4th International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing in cnjunction with ICSOFT 2010, Athens, Greece, July 2010

    NARCIS (Netherlands)

    Sinderen, van Marten; Sapkota, Brahmananda

    2010-01-01

    This volume contains the proceedings of the Fourth International Workshop on Architectures, Concepts and Technologies for Service Oriented Computing (ACT4SOC 2010), held on July 23 in Athens, Greece, in conjunction with the Fourth International Conference on Software and Data Technologies (ICSOFT 20

  13. 基于IEEE802.16e睡眠模式的研究%Performance analysis of sleep mode operation in IEEE802.16e

    Institute of Scientific and Technical Information of China (English)

    顾俊杰; 杨宇航

    2009-01-01

    The IEEE802.16e is a standard of emerging broadband wireless access system which supports the mobility. The mobile subscribers (MSS) are mainly powered by the batteries, so the sleep mode mechanism becomes an important component for the MSS which can effectively manage the limited energy, and prolong the using time of the once-charged batteries.This paper introduced the standardized sleep mode in IEEE802.16e,then it analyzed the average energy consumption and the average packet delay under sleep mode by building a semi-Markov chain,and gave the simulation results by NS2 at last.%IEEE802.16e标准是支持终端移动性的无线城域网接人标准.由于移动终端是由电池供电的,而休眠模式作为其必备功能,能有效管理其有限的电池容量,延长其单次充电使用时间.首先介绍了IEEE802.16e标准建议的睡眠模式,然后通过建立马尔可夫链模型对睡眠模式下的平均能量消耗及平均包延迟进行分析,最后NS2工具对分析结果进行NS2仿真和讨论.

  14. IEEE 802.11 DCF协议性能分析模型%Performance Analysis Model for IEEE 802.11 Distributed Coordination Function Protocol

    Institute of Scientific and Technical Information of China (English)

    钟萍; 施海彬; 庄玉祥; 石江宏; 陈辉煌

    2013-01-01

    提出了一种改进的二维Markov链模型用于分析IEEE 802.11 DCF协议.该模型不仅考虑实际应用中饱和业务量和非饱和业务量的情况,而且考虑DCF协议的退避计时器的冻结状态和有限的重传次数.通过对该Markov链模型稳定状态的求解并结合M/M/1/K排队模型,导出了DCF系统性能的理论模型.仿真结果表明,该理论模型能够精确地预测广义IEEE 802.11 DCF协议的系统性能.%This paper proposes an improved two-dimensional Markov chain model for the performance analysis of the IEEE 802.11 DCF protocol. The model is applicable to both saturated and unsaturated traffic conditions. Moreover, it extends the existing models to take into account previously-ignored MAC layer factors such as backoff freezing and limited times of retry. In addition, by deriving the stationary state of the Markov model and considering an M/M/1/K queuing model, we further derive a theoretical model for evaluating performance of the general IEEE 802.11 DCF protocols. Accuracy of the proposed theoretical model is validated with simulation results.

  15. Research of Bus Signals Extension in IEEE Std 1641-2010%IEEE Std 1641中总线类信号扩展方法研究

    Institute of Scientific and Technical Information of China (English)

    陈育良; 牛双诚; 曲晓燕

    2012-01-01

    With a 4 layers model, IEEE Std 1641 - 2010 provides the capability to describe and control signals, but not include one of the most important signal, bus signals. After researching way of bus signals extension in C/ATLAS, this paper gives an model of bus instruments using the reference of its designing idea, and accomplish bus signals extension by extending new signals. It also gives TPL statement of new signals. Using this method, it fulfill test well in an ATS.%IEEE Std 1641-2010中提出STD四层结构模型,完成信号的描述和控制功能,但没有提供总线信号定义和描述,而总线信号则是自动测试中最重要信号之一;针对此问题,文中通过深入研究C/ATLAS中总线类信号的扩展方法,借鉴其设计思想,提出了满足IEEE Std 1641设计思想和原则的总线信号仪器模型,通过扩展新信号的方法完成多种总线信号扩展,并给出其TPL语言支持,经实际系统中使用,很好地完成了测试测量功能.

  16. 面向IEEE 802.16e的高效LDPC编码器设计%Design of High Efficient LDPC Encoder in IEEE 802.16e

    Institute of Scientific and Technical Information of China (English)

    李书洋; 胡剑浩; 陈杰男

    2012-01-01

    基于矩阵乘法的高斯消元法提出了一种通用的LDPC编码器结构,该结构使用移位寄存器和简单的选线实现了复杂的矩阵向量相乘运算并且不需要存储庞大的校验矩阵.然后根据IEEE 802.16e标准中对校验矩阵的定义,利用FPGA实现了编码器的硬件结构,并且由仿真结果可知这种LDPC编码器结构降低了逻辑资源开销,提高了编码速度.%In this paper, a high efficient LDPC encoder structure is proposed for IEEE 802. 16e with Gaussian elimination algorithm based on matrix multiplication. The matrix-vector multiplication is implemented with a shift register and a simple line selection in the proposed encoder, which is memory free structure for check matrix. According to IEEE 802.16e, the proposed encoder is implemented with FPGA. Compared with existing LDPC encoder, the proposed scheme can provide higher speed of encoding with less logic resources.

  17. Test-Driven Development of IEEE 1451 Transducer Services and Application

    Directory of Open Access Journals (Sweden)

    S. Ranđić

    2012-06-01

    Full Text Available IEEE 1451 standard defines the methods of integrating smart transducers into communicating networks. Interface between a user application and a field of transducers, known as Transducer Services API is defined by standrad IEEE 1451.0. This paper presents the use of Test- Driven Design (TDD in developing methods for accessing transducer services using Transducer Services API and developing web applications which access this services over the network. The characteristics of TDD and its benefits are presented and the way of realization for one method is shown using Java and JUnit framework to run tests.

  18. IEEE 802.11e (EDCA analysis in the presence of hidden stations

    Directory of Open Access Journals (Sweden)

    Xijie Liu

    2011-07-01

    Full Text Available The key contribution of this paper is the combined analytical analysis of both saturated and non-saturated throughput of IEEE 802.11e networks in the presence of hidden stations. This approach is an extension to earlier works by other authors which provided Markov chain analysis to the IEEE 802.11 family under various assumptions. Our approach also modifies earlier expressions for the probability that a station transmits a packet in a vulnerable period. The numerical results provide the impact of the access categories on the channel throughput. Various throughput results under different mechanisms are presented.

  19. A New Analytic Method for IEEE 802.11 Distributed Coordination Function

    Science.gov (United States)

    Hwang, Gang Uk; Chung, Min Young; Lee, Yutae

    In this paper, we consider a network of N identical IEEE 802.11 DCF (Distributed Coordination Function) terminals with RTS/CTS mechanism, each of which is assumed to be saturated. For performance analysis, we propose a simple and efficient mathematical model to derive the statistical characteristics of the network such as the inter-transmission time of packets in the network and the service time (the inter-transmission time of successful packet transmissions) of the network. Numerical results and simulations are provided to validate the accuracy of our model and to study the performance of the IEEE 802.11 DCF network.

  20. International Conference on Grey Systems and intelligent Services (IEEE GSIS 2009)

    CERN Document Server

    Liu, Sifeng; Advances in Grey Systems Research

    2010-01-01

    This book contains contributions by some of the leading researchers in the area of grey systems theory and applications. All the papers included in this volume are selected from the contributions physically presented at the 2009 IEEE International Conference on Grey Systems and Intelligent Services, November 11 – 12, 2009, Nanjing, Jiangsu, People’s Republic of China. This event was jointly sponsored by IEEE Systems, Man, and Cybernetics Society, Natural Science Foundation of China, and Grey Systems Society of China. Additionally, Nanjing University of Aeronautics and Astronautics also invested heavily in this event with its direct and indirect financial and administrative supports.

  1. BER Analysis Of IEEE802.11n MIMO System Using MMSE And ZF Detectors

    Directory of Open Access Journals (Sweden)

    Ye Lwin Oo

    2015-06-01

    Full Text Available Abstract With the increasing demand of higher data rate for telecommunication the IEEE802.11n standard was constituted in 2009. The most important character of the standard is MIMO-OFDM which not only improves the throughput but also the spectrum efficiency and channel capacity. And in wireless communication the role of MIMO detectors plays an important part to remove inter-symbol interference ISI caused by multipath fading channel. In this paper the BER performance of IEEE 802.11n for 3x2 4x2 and 4x3 antennas are compared using MMSE and ZF detectors in Matlab Simulink.

  2. Direct Sequence Spread Spectrum Steganographic Scheme for IEEE 802.15.4

    CERN Document Server

    Zielinska, Elzbieta

    2011-01-01

    This work addresses the issues related to network steganography in IEEE 802.15.4 Wireless Personal Area Networks (WPAN). The proposed communication scheme employs illicit Direct Sequence Spread Spectrum code sequences for the transmission of steganographic data. The presented approach is a compromise between minimising the probability of covert channel disclosure and providing robustness against random errors and a high steganographic data rate. The conducted analyses show that it is possible to create a covert channel with a data rate comparable to the raw data rate of IEEE 802.15.4 without much impact on the perceived receiver sensitivity, the Chip Error Rate and the Bit Error Rate.

  3. GE networked mass storage solutions supporting IEEE network mass storage model

    Science.gov (United States)

    Herzog, Donald

    1993-01-01

    The General Electric Government Communications Systems Department (GE/GCSD) has developed a near real time digital data storage and retrieval system that extends the capabilities currently available in today's marketplace. This system called DuraStore uses commercially available rotary tape drive technology with ANSI/IEEE standards for automated magnetic tape based data storage. It uses a nonproprietary approach to satisfy a wide range of data rates and storage capabilities requirements and is compliant with the IEEE Network Storage Model. Rotary tape drives, standard interfaces, application specific hardware/software, networked automated tape libraries, library administrator, write protection, volume/physical media linkages, and maximum resource utilization are addressed.

  4. IEEE 802.17与弹性分组环

    Institute of Scientific and Technical Information of China (English)

    马上; 马立香

    2004-01-01

    2004年6月发布的IEEE802.1 7标准规范了弹性分组环(RPR)技术.RPR针对承载IP业务进行优化,是构建IP城域网极具潜力的技术.本文概述IEEE 802.17/RPR技术,重点概述RPR的带宽分配、空间重用、自动拓扑发现及保护等关键技术,比较分析RPR相对其它城域网技术的优势.

  5. Chair's Introduction to 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis

    Institute of Scientific and Technical Information of China (English)

    Rueywen Liu

    2009-01-01

    @@ Based on the recommendation of ICTD'09 TPC members, this Special Issue of the Journal of Electronic Science & Technology of China (JESTC) contained 22 high quality papers selected from the Proceedings of 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis (ICTD'09) which is fully sponsored by the IEEE Circuits and Systems Society (CASS), and is technically co-sponsored by the University of Electronic Science and Technology of China (UESTC), the Chinese Institute of Electronics (CIE), the China Instrument & Control Society (CIS), and organized by UESTC.

  6. Queuing Analysis for IEEE 802.11e Networks in Non-Saturation Environments

    Directory of Open Access Journals (Sweden)

    Eui-Jik Kim

    2012-04-01

    Full Text Available This paper presents an analytical model for the performance evaluation of an IEEE 802.11e network in non‐saturation environments. We first characterize the probability distribution of the MAC layer packet service time. Based on the probability distribution model of the MAC layer packet service time, we then study the queuing performance of the wireless local area networks (WLANs at different traffic loads based on the IEEE 802.11e MAC protocol. The numerical results show that we can choose a feasible number and bandwidth of the node which determines the system performance that a user demands.

  7. Analysis Of Impact Of Various Parameters On BER Performance For IEEE 802.11b

    Directory of Open Access Journals (Sweden)

    Nilesh B. Kalani

    2015-08-01

    Full Text Available Abstract This paper discusses about IEEE 802.11b simulation model implemented using LabVIEW software and its analyses for impact on bit error rate BER for different parameters as channel type channel number data transmission rate and packet size. Audio file is being transmitted processed and analyzed using the model for various parameters. This paper gives analysis of BER verses ESN0 for various parameter like data rate packet size and communication channel for the IEEE 802.11b simulation model generated using LabVIEW. It is proved that BER can be optimized by tweaking different parameters of wireless communication system.

  8. Reactive GTS Allocation Protocol for Sporadic Events Using the IEEE 802.15.4

    Directory of Open Access Journals (Sweden)

    Mukhtar Azeem

    2014-01-01

    by the IEEE 802.15.4 standard. The proposed control protocol ensures that a given offline sporadic schedule can be adapted online in a timely manner such that the static periodic schedule has not been disturbed and the IEEE 802.15.4 standard compliance remains intact. The proposed protocol is simulated in OPNET. The simulation results are analyzed and presented in this paper to prove the correctness of the proposed protocol regarding the efficient real-time sporadic event delivery along with the periodic event propagation.

  9. Optical Network Testbeds Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Joe Mambretti

    2007-06-01

    This is the summary report of the third annual Optical Networking Testbed Workshop (ONT3), which brought together leading members of the international advanced research community to address major challenges in creating next generation communication services and technologies. Networking research and development (R&D) communities throughout the world continue to discover new methods and technologies that are enabling breakthroughs in advanced communications. These discoveries are keystones for building the foundation of the future economy, which requires the sophisticated management of extremely large qualities of digital information through high performance communications. This innovation is made possible by basic research and experiments within laboratories and on specialized testbeds. Initial network research and development initiatives are driven by diverse motives, including attempts to solve existing complex problems, the desire to create powerful new technologies that do not exist using traditional methods, and the need to create tools to address specific challenges, including those mandated by large scale science or government agency mission agendas. Many new discoveries related to communications technologies transition to wide-spread deployment through standards organizations and commercialization. These transition paths allow for new communications capabilities that drive many sectors of the digital economy. In the last few years, networking R&D has increasingly focused on advancing multiple new capabilities enabled by next generation optical networking. Both US Federal networking R&D and other national R&D initiatives, such as those organized by the National Institute of Information and Communications Technology (NICT) of Japan are creating optical networking technologies that allow for new, powerful communication services. Among the most promising services are those based on new types of multi-service or hybrid networks, which use new optical networking

  10. The Naturalness of the Fourth SM Family

    CERN Document Server

    Sultansoy, S

    2009-01-01

    The necessity of the fourth family follows from the SM basics. According to flavor democracy the Dirac masses of the fourth SM family fermions are almost equal with preferable value 450 GeV, which corresponds to common (for all fundamental fermions) Yukawa coupling equal to SU(2) gauge coupling gW. In principle, one expect u4 a little bit lighter than d4, while nu4 could be essentially lighter than l4 due to Majorana mass terms for right-handed components of neutrinos. Obviously, the fourth family quarks will be copiously produced at the LHC. However, the first indication of the fourth SM family may be provided by early Higgs boson observation due to almost an order enhancement of the gluon fusion to Higgs cross-section. For the same reason the Tevatron still has a chance to observe the Higgs boson before the LHC. Concerning the fourth family leptons, in general, best place will be NLC/CLIC. However, for some mass regions and MNS matrix elements double discovery of both the nu4 and H could be possible at the ...

  11. Annual Workshop: Higgs Couplings 2016

    CERN Document Server

    2016-01-01

    Higgs Couplings 2016 is this year's installment of an annual workshop devoted to new experimental and theoretical results on the Higgs boson. The 2016 workshop will present the latest results from the LHC run 2 on the Higgs boson mass, spin/parity, and couplings and will present new theoretical work devoted to the measurement of Higgs parameters and possibilities for exotic Higgs decays. The workshop will provide an opportunity for critical discussion of the current strategies for studying the Higgs boson at the LHC and the next steps in the LHC program. The workshop will also include discussion of the longer-term Higgs boson program at future facilities.

  12. 75 FR 29775 - Food Labeling Workshop; Public Workshop

    Science.gov (United States)

    2010-05-27

    ... and startups. Date and Time: This public workshop will be held on August 4 and 5, 2010, from 8 a.m. to 5 p.m. Location: The public workshop will be held at the Continuing Education Center, 2 East Center St., Fayetteville, AR (located downtown). Contact: David Arvelo, Food and Drug...

  13. 75 FR 74736 - Food Labeling Workshop; Public Workshop

    Science.gov (United States)

    2010-12-01

    ... required due to disability, along with a check or money order for $250 payable to ``Iowa State University..., in collaboration with Iowa State University, is announcing a public workshop entitled ``Food Labeling... public workshop will be held at the Scheman Conference Center, Lincoln Way and University Avenue,...

  14. IEEE802.15.4协议性能分析实验设计与实现%Experimental Design and Implementation of IEEE 802.15.4 Protocol Performance Analysis

    Institute of Scientific and Technical Information of China (English)

    欧阳国军; 赵艳玲

    2016-01-01

    为了探索IEEE802.15.4协议实验教学,首先对实验内容进行了归纳,然后应用IEEE802.15.4/ZigBee仿真模型设计了IEEE802.15.4协议性能分析实验方案,详细给出IEEE802.15.4/ZigBee仿真模型的参数配置,最后分析了参数SO、BO、NB、BE和负载对网络性能的影响.该实验方案应用到教学中,加强了学生对抽象、复杂知识的理解,填补了IEEE802.15.4协议教学中的一项空白.

  15. Fourth annual workshop on management in basic and applied research environments

    Energy Technology Data Exchange (ETDEWEB)

    Bodnarczuk, M.W. [ed.

    1993-11-01

    The struggle to develop quality management concepts that ``map`` onto the cultural and work practices found in basic and applied research environments has been (for better or for worse) an attempt to differentiate basic and applied research from the nuclear industry. In the first (1990) edition of this ``Music Book`` proceedings, almost every laboratory that participated had a quality program that was traceable to, based on, influenced by, or in reaction to the nuclear quality standard ASME-NQA-1. This 1993 edition of the ``Music Book`` is very different in that almost every laboratory has developed a quality program that is based on, traceable to, or heavily influenced by DOE 5700.6C (Quality Assurance) and the DOE Standard; Implementation Guide for Quality Assurance Programs for Basic and Applied Research (DOE-ER-STD-6001-92). In order to construct a context for what follows and properly introduce the contents of this book, we want to briefly recount some of the highlights of the events that brought about this change, from the perspective of one who participated in the process.

  16. Fourth workshop on experiments and detectors for a relativistic heavy ion collider

    Energy Technology Data Exchange (ETDEWEB)

    Fatyga, M.; Moskowitz, B. (eds.)

    1990-01-01

    This report contains papers on the following topics: physics at RHIC; flavor flow from quark-gluon plasma; space-time quark-gluon cascade; jets in relativistic heavy ion collisions; parton distributions in hard nuclear collisions; experimental working groups, two-arm electron/photon spectrometer collaboration; total and elastic pp cross sections; a 4{pi} tracking TPC magnetic spectrometer; hadron spectroscopy; efficiency and background simulations for J/{psi} detection in the RHIC dimuon experiment; the collision regions beam crossing geometries; Monte Carlo simulations of interactions and detectors; proton-nucleus interactions; the physics of strong electromagnetic fields in collisions of relativistic heavy ions; a real time expert system for experimental high energy/nuclear physics; the development of silicon multiplicity detectors; a pad readout detector for CRID/tracking; RHIC TPC R D progress and goals; development of analog memories for RHIC detector front-end electronic systems; calorimeter/absorber optimization for a RHIC dimuon experiment; construction of a highly segmented high resolution TOF system; progress report on a fast, particle-identifying trigger based on ring-imaging and highly integrated electronics for a TPC detector.

  17. Report of fourth workshop on particle image velocimetry, Yayoi Research Group

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-11-01

    This issue is the collection of the paper presented at the title meeting. Separate abstract was presented for 1 of the paper in this report. The remaining 6 were considered outside the subject scope of INIS. (J.P.N.)

  18. Proceedings of the fourth biennial conference and workshop on wind energy conversion systems

    Energy Technology Data Exchange (ETDEWEB)

    Kottler, Jr., R. J. [ed.

    1980-06-01

    Separate abstracts are included for papers presented concerning research and development requirements and utility interface and institutional issues for small-scale systems; design requirements and research and development requirements for large-scale systems; economic and operational requirements of large-scale wind systems; wind characteristics and wind energy siting; international activities; wind energy applications in agriculture; federal commercialization and decentralization plans; and wind energy innovative systems.

  19. Fourth Generation Leptons and Muon $g-2$

    CERN Document Server

    Hou, Wei-Shu; Ma, Chien-Yi

    2008-01-01

    We consider the contributions to $g_\\mu-2$ from fourth generation heavy neutral and charged leptons, $N$ and $E$, at the one-loop level. Diagrammatically, there are two types of contributions: boson-boson-$N$, and $E$-$E$-boson in the loop diagram. In general, the effect from $N$ is suppressed by off-diagonal lepton mixing matrix elements. For $E$, we consider flavor changing neutral couplings arising from various New Physics models, which are stringently constrained by $\\mu\\to e\\gamma$. We assess how the existence of a fourth generation would affect these New Physics models.

  20. The Fourth (A)ATSR Data Reprocessing

    Science.gov (United States)

    Goryl, Philippe; Cocevar, Pauline; Done, Fay; Aatsr Quality Working Group

    2016-08-01

    This paper aims to inform users of the upcoming Fourth Reprocessing of ATSR-1, ATSR-2 and AATSR data. The main objective of the Fourth Reprocessing is to generate (A)ATSR Level 1B data products in a similar format to SLSTR products from Sentinel-3. In this way, users can easily access the 20-year dataset from the ERS and ENVISAT (A)ATSR missions and carry the analysis forward into the Sentinel era. In addition to the product format change, the dataset will build on the improvements implemented in the Third Reprocessing, and will contain further improvements and enhancements, as described below.

  1. JACOBI PSEUDOSPECTRAL METHOD FOR FOURTH ORDER PROBLEMS

    Institute of Scientific and Technical Information of China (English)

    Zheng-su Wan; Ben-yu Guo; Zhong-qing Wang

    2006-01-01

    In this paper, we investigate Jacobi pseudospectral method for fourth order problems.We establish some basic results on the Jacobi-Gauss-type interpolations in non-uniformly weighted Sobolev spaces, which serve as important tools in analysis of numerical quadratures, and numerical methods of differential and integral equations. Then we propose Jacobi pseudospectral schemes for several singular problems and multiple-dimensional problems of fourth order. Numerical results demonstrate the spectral accuracy of these schemes,and coincide well with theoretical analysis.

  2. Towards New Ventures in Education. Workshop on Nonformal Education (Yared Music School, Addis Ababa, Ethiopia, February 18, 1974).

    Science.gov (United States)

    Neqniq, Ato Million

    The major responsibility of this workshop on nonformal education is to establish some prototypes of community training activities which will coordinate with the agricultural and health components of Ethiopia's Fourth Five Year Plan for rural development and which can later be reproduced in the countryside. Linking education to overall development…

  3. Results of the 4th scientific workshop of the ECCO (Group II) : markers of intestinal fibrosis in inflammatory bowel disease

    NARCIS (Netherlands)

    Rieder, Florian; de Bruyn, Jessica R; Pham, Bao Tung; Katsanos, Konstantinos; Annese, Vito; Higgins, Peter D R; Magro, Fernando; Dotan, Iris

    2014-01-01

    The fourth scientific workshop of the European Crohn's and Colitis Organization (ECCO) focused on intestinal fibrosis in inflammatory bowel disease (IBD). The objective was to better understand basic mechanisms and markers of intestinal fibrosis as well as to suggest new therapeutic targets to preve

  4. Channel Resource Allocation for VoIP Applications in Collaborative IEEE 802.11/802.16 Networks

    Directory of Open Access Journals (Sweden)

    Foh ChuanHeng

    2010-01-01

    Full Text Available Collaborations between the IEEE 802.11 and the IEEE 802.16 networks operating in a common spectrum offers dynamic allocate bandwidth resources to achieve improved performance for network applications. This paper studies the bandwidth resource allocation of collaborative IEEE 802.11 and IEEE 802.16 networks. Consider delivering data packets between mobile stations and Internet users through an access point (AP of the IEEE 802.11 network and a base station (BS of the IEEE 802.16 network operating on a common frequency band, we analyze their medium access control (MAC protocols, frame structures, and design a cooperation mechanism for the IEEE 802.11 and the IEEE 802.16 networks to share the same medium with adaptive resource allocation. Based on the mechanism, an optimized resource allocation scheme is proposed for VoIP applications. An analytical model is developed for the study to show significant improvements in voice capacity for our optimized resource allocation scheme.

  5. Comparison of QoS guarantee techniques for VoIP over IEEE802.11 wireless LAN

    Science.gov (United States)

    Guo, Fanglu; Chiueh, Tzi-cker

    2008-01-01

    An emerging killer application for enterprise wireless LANs (WLANs) is voice over IP (VoIP) telephony, which promises to greatly improve the reachability and mobility of enterprise telephony service at low cost. None of the commercial IEEE 802.11 WLAN-based VoIP products can support more than ten G.729-quality voice conversations over a single IEEE 802.11b channel on real-world WLANs, even though the physical transmission rate is more than two orders of magnitude higher than an individual VoIP connection's bandwidth requirement. There are two main reasons why these VoIP systems' effective throughput is significantly lower than expected: VoIP's stringent latency requirement and substantial per-WLAN-packet overhead. Time-Division Multiple Access (TDMA) is a well-known technique that provides per-connection QoS guarantee as well as improves the radio channel utilization efficiency. This paper compares the effective throughput of IEEE 802.11, IEEE 802.11e and a software-based TDMA (STDMA) protocol that is specifically designed to support WLAN-based VoIP applications, on the same commodity IEEE 802.11 WLAN hardware. Empirical measurements from a VOIP over WLAN testbed show that the numbers of G.729-quality voice conversations that IEEE 802.11, IEEE 802.11e and STDMA can support over a single IEEE 802.11b channel are 18, 22 and 50, respectively.

  6. RFI Mitigation Workshop

    Science.gov (United States)

    2010-05-01

    The increased sensitivity of passive instrumentation in radio astronomy and remote sensing and the intensifying active use of the spectrum have led to an increasing level of radio frequency interference (RFI) of the active services on the passive use of the spectrum. Advances in technology and computing have opened up new possibilities for mitigating the effects of certain classes of interference in the observing data. Interference in allocated bands always leads to data loss for the passive users of the spectrum even if interference mitigation is applied. However, interference mitigation in non-allocated spectral bands may facilitate the partial use of this spectrum for passive (non-interfering) observations. There is no generic method to mitigate all types of interference, so a multi-layered system approach may be advisable to reduce detrimental effects for a congested interference environment. Specific mitigation methods implemented at different points in the data acquisition chain will thus result in a cumulative mitigation effect on the data. This third RFI Mitigation Workshop considered RFI mitigation in radio astronomy in all its facets with the aim of facilitating the implementation of instrumental and data processing techniques. This workshop aimed to take a forward look at applications for the next generation of radio instruments, such as the SKA and its pathfinders and LOFAR, as well as considering their application to existing instruments. This workshop has been organized by ASTRON and NAIC, with support from the Engineering Forum of FP7 RadioNet, the SKA Project Development Office, and in collaboration with CRAF and IUCAF.

  7. Craniofacial morphogenesis workshop report.

    Science.gov (United States)

    Solursh, M; Murray, J

    1994-05-01

    The following report highlights the discussions and interaction at the workshop on craniofacial morphogenesis, sponsored by The Human Frontier Science Program, held in April 1993 at the University of Iowa. A brief summary of selected sessions is included to exemplify the benefits of bringing together individuals from various disciplines and backgrounds in order to establish a unified theory of craniofacial morphogenesis. The synthesis of information and experience of a wide range of approaches made the 4-day period an invaluable experience for the participants from nine different countries.

  8. CENDI Indexing Workshop

    Science.gov (United States)

    1994-01-01

    The CENDI Indexing Workshop held at NASA Headquarters, Two Independence Square, 300 E Street, Washington, DC, on September 21-22, 1994 focused on the following topics: machine aided indexing, indexing quality, an indexing pilot project, the MedIndEx Prototype, Department of Energy/Office of Scientific and Technical Information indexing activities, high-tech coding structures, category indexing schemes, and the Government Information Locator Service. This publication consists mostly of viewgraphs related to the above noted topics. In an appendix is a description of the Government Information Locator Service.

  9. Melioidosis Diagnostic Workshop, 20131

    Science.gov (United States)

    AuCoin, David; Baccam, Prasith; Baggett, Henry C.; Baird, Rob; Bhengsri, Saithip; Blaney, David D.; Brett, Paul J.; Brooks, Timothy J.G.; Brown, Katherine A.; Chantratita, Narisara; Cheng, Allen C.; Dance, David A.B.; Decuypere, Saskia; Defenbaugh, Dawn; Gee, Jay E.; Houghton, Raymond; Jorakate, Possawat; Lertmemongkolchai, Ganjana; Limmathurotsakul, Direk; Merlin, Toby L.; Mukhopadhyay, Chiranjay; Norton, Robert; Peacock, Sharon J.; Rolim, Dionne B.; Simpson, Andrew J.; Steinmetz, Ivo; Stoddard, Robyn A.; Stokes, Martha M.; Sue, David; Tuanyok, Apichai; Whistler, Toni; Wuthiekanun, Vanaporn; Walke, Henry T.

    2015-01-01

    Melioidosis is a severe disease that can be difficult to diagnose because of its diverse clinical manifestations and a lack of adequate diagnostic capabilities for suspected cases. There is broad interest in improving detection and diagnosis of this disease not only in melioidosis-endemic regions but also outside these regions because melioidosis may be underreported and poses a potential bioterrorism challenge for public health authorities. Therefore, a workshop of academic, government, and private sector personnel from around the world was convened to discuss the current state of melioidosis diagnostics, diagnostic needs, and future directions. PMID:25626057

  10. SIMS applications workshop. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-04-01

    The first ANSTO/AINSE SIMS Workshop drew together a mixture of Surface Analysis experts and Surface Analysis users with the concept that SIMS analysis has to be enfolded within the spectrum of surface analysis techniques and that the user should select the technique most applicable to the problem. With this concept in mind the program was structured as sessions on SIMS Facilities; Applications to Mineral Surfaces; Applications to Biological Systems, Applications to Surfaces as Semi- conductors, Catalysts and Surface Coatings; and Applications to Ceramics

  11. ROOT User Workshop 2013

    CERN Document Server

    2013-01-01

    Since almost two decades, ROOT has established itself as the framework for HENP data processing and analysis. The LHC upgrade program and the new experiments being designed at CERN and elsewhere will pose even more formidable challenges in terms of data complexity and size. The new parallel and heterogeneous computing architectures that are either announced or already available will call for a deep rethinking of the code and the data structures to be exploited efficiently. This workshop, following from a successful series of such events, will allow you to learn in detail about the new ROOT 6 and will help shape the future evolution of ROOT.

  12. 15th Cluster workshop

    CERN Document Server

    Laakso, Harri; Escoubet, C. Philippe; The Cluster Active Archive : Studying the Earth’s Space Plasma Environment

    2010-01-01

    Since the year 2000 the ESA Cluster mission has been investigating the small-scale structures and processes of the Earth's plasma environment, such as those involved in the interaction between the solar wind and the magnetospheric plasma, in global magnetotail dynamics, in cross-tail currents, and in the formation and dynamics of the neutral line and of plasmoids. This book contains presentations made at the 15th Cluster workshop held in March 2008. It also presents several articles about the Cluster Active Archive and its datasets, a few overview papers on the Cluster mission, and articles reporting on scientific findings on the solar wind, the magnetosheath, the magnetopause and the magnetotail.

  13. Evaluation of the Effects of Hidden Node Problems in IEEE 802.15.7 Uplink Performance

    Directory of Open Access Journals (Sweden)

    Carlos Ley-Bosch

    2016-02-01

    Full Text Available In the last few years, the increasing use of LEDs in illumination systems has been conducted due to the emergence of Visible Light Communication (VLC technologies, in which data communication is performed by transmitting through the visible band of the electromagnetic spectrum. In 2011, the Institute of Electrical and Electronics Engineers (IEEE published the IEEE 802.15.7 standard for Wireless Personal Area Networks based on VLC. Due to limitations in the coverage of the transmitted signal, wireless networks can suffer from the hidden node problems, when there are nodes in the network whose transmissions are not detected by other nodes. This problem can cause an important degradation in communications when they are made by means of the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA access control method, which is used in IEEE 802.15.7 This research work evaluates the effects of the hidden node problem in the performance of the IEEE 802.15.7 standard We implement a simulator and analyze VLC performance in terms of parameters like end-to-end goodput and message loss rate. As part of this research work, a solution to the hidden node problem is proposed, based on the use of idle patterns defined in the standard. Idle patterns are sent by the network coordinator node to communicate to the other nodes that there is an ongoing transmission. The validity of the proposed solution is demonstrated with simulation results.

  14. Performance Analysis of Non-saturated IEEE 802.11 DCF Networks

    Science.gov (United States)

    Zhai, Linbo; Zhang, Xiaomin; Xie, Gang

    This letter presents a model with queueing theory to analyze the performance of non-saturated IEEE 802.11 DCF networks. We use the closed queueing network model and derive an approximate representation of throughput which can reveal the relationship between the throughput and the total offered load under finite traffic load conditions. The accuracy of the model is verified by extensive simulations.

  15. Evaluation of H.264/AVC over IEEE 802.11p vehicular networks

    Science.gov (United States)

    Rozas-Ramallal, Ismael; Fernández-Caramés, Tiago M.; Dapena, Adriana; García-Naya, José Antonio

    2013-12-01

    The capacity of vehicular networks to offer non-safety services, like infotainment applications or the exchange of multimedia information between vehicles, have attracted a great deal of attention to the field of Intelligent Transport Systems (ITS). In particular, in this article we focus our attention on IEEE 802.11p which defines enhancements to IEEE 802.11 required to support ITS applications. We present an FPGA-based testbed developed to evaluate H.264/AVC (Advanced Video Coding) video transmission over vehicular networks. The testbed covers some of the most common situations in vehicle-to-vehicle and roadside-to-vehicle communications and it is highly flexible, allowing the performance evaluation of different vehicular standard configurations. We also show several experimental results to illustrate the quality obtained when H.264/AVC encoded video is transmitted over IEEE 802.11p networks. The quality is measured considering two important parameters: the percentage of recovered group of pictures and the frame quality. In order to improve performance, we propose to substitute the convolutional channel encoder used in IEEE 802.11p for a low-density parity-check code encoder. In addition, we suggest a simple strategy to decide the optimum number of iterations needed to decode each packet received.

  16. IEEE 802.11 Wireless LANs: Performance Analysis and Protocol Refinement

    Directory of Open Access Journals (Sweden)

    Chatzimisios P.

    2005-01-01

    Full Text Available The IEEE 802.11 protocol is emerging as a widely used standard and has become the most mature technology for wireless local area networks (WLANs. In this paper, we focus on the tuning of the IEEE 802.11 protocol parameters taking into consideration, in addition to throughput efficiency, performance metrics such as the average packet delay, the probability of a packet being discarded when it reaches the maximum retransmission limit, the average time to drop a packet, and the packet interarrival time. We present an analysis, which has been validated by simulation that is based on a Markov chain model commonly used in the literature. We further study the improvement on these performance metrics by employing suitable protocol parameters according to the specific communication needs of the IEEE 802.11 protocol for both basic access and RTS/CTS access schemes. We show that the use of a higher initial contention window size does not considerably degrade performance in small networks and performs significantly better in any other scenario. Moreover, we conclude that the combination of a lower maximum contention window size and a higher retry limit considerably improves performance. Results indicate that the appropriate adjustment of the protocol parameters enhances performance and improves the services that the IEEE 802.11 protocol provides to various communication applications.

  17. Performance characterization of the IEEE 802.11 signal transmission over a multimode fiber PON

    Science.gov (United States)

    Maksymiuk, L.; Siuzdak, J.

    2014-11-01

    In this paper there are presented measurements concerning performance analysis of the IEEE 802.11 signal distribution over multimode fiber based passive optical network. In the paper there are addressed three main sources of impairments: modal noise, frequency response fluctuation of the multimode fiber and non-linear distortion of the signal in the receiver.

  18. Some problems of implementation: ANSI/IEEE Std 1149.1 in microcontroller design

    Science.gov (United States)

    Adamkiewicz, Hubert; Glinski, Krzysztof; Lewandowski, Artur

    1992-08-01

    The paper presents some problems of implementation ANSI/IEEE Std 1149.1 worked out in the Industrial Institute of Electronics (PIE) microcontroller board. Diagnostic properties of some special hardware solutions and examples of testing procedures are described. Testing was performed with the help of the PIE diagnostic bus analyzer.

  19. Interference Measurements in IEEE 802.11 Communication Links Due to Different Types of Interference Sources

    NARCIS (Netherlands)

    Bloem, van Jan-Willem; Schiphorst, Roel; Kluwer, Taco; Slump, Cornelis H.

    2012-01-01

    The number of wireless devices (smartphones, laptops, sensors) that use the 2.4 GHz ISM band is rapidly increasing. The most common communication system in this band is Wi-Fi (IEEE 802.11b/g/n). For that reason coexistence between Wi-Fi and other systems becomes more and more important. In this pape

  20. Analysis of the IEEE 802.20 norm as the standard for developing new wireless technologies

    Directory of Open Access Journals (Sweden)

    Danilo A López Sarmiento

    2015-10-01

    Full Text Available This paper aims to compile existing information on the IEEE 802.20 standard and unify it in a document that will serve as support for parties interested in conducting research and / or projects related to wireless technologies.

  1. Interference Mitigation in IEEE 802.15.4-A Cluster Based Scheduling Approach

    Directory of Open Access Journals (Sweden)

    G. M. Tamilselvan

    2011-01-01

    Full Text Available Problem statement: In universal networking environments; two or more heterogeneous communication systems coexisting in a single place. Especially, Wireless Local Area Networks (WLANs based on IEEE 802.11b specifications and Wireless Personal Area Networks (WPANs based on IEEE 802.15.4 specifications need to coexist in the same Industrial, Science and Medial (ISM band. If the WPAN communication coverage is expanded using a cluster-tree network topology, then the 802.15.4 network is more susceptible to interference from neighboring WLANs. Approach: In this study, we propose an adaptive transmission power aware cluster scheduling algorithm using multiple channels in a WPAN in the presence of WLAN interference. Results: The algorithm includes node identification, channel allocation, clustering and time scheduling. To evaluate the performance of the proposed algorithm, the performance metrics such as Bit error, Packet Error Rate (PER, Throughput, Average End-End Delay and Average Jitter is measured through Qualnet simulation. PER is calculated from bit error rate. The simulation results are compared with the conventional TDMA scheme. Conclusion/Recommendations: The measurement result shows that the proposed algorithm is effective in an IEEE 802.15.4 cluster-tree network in the presence of multiple IEEE 802.11 interferers.

  2. Performance Evaluations for IEEE 802.15.4-based IoT Smart Home Solution

    Directory of Open Access Journals (Sweden)

    Nga Dinh

    2016-09-01

    Full Text Available The Internet of Things (IoT is going to be a market-changing force for a variety of real-time applications such as e-healthcare, home automation, environmental monitoring, and industrial automation. Low power wireless communication protocols offering long lifetime and high reliability such as the IEEE 802.15.4 standard have been a key enabling technology for IoT deployments and are deployed for home automation recently. The issues of the IEEE 802.15.4 networks have moved from theory to real world deployments. The work presented herein intends to demonstrate the use of the IEEE 802.15.4 standard in recent IoT commercial products for smart home applications: the Smart Home Starter Kit. The contributions of the paper are twofold. First, the paper presents how the IEEE 802.15.4 standard is employed in Smart Home Starter Kit. In particular, network topology, network operations, and data transfer mode are investigated. Second, network performance metrics such as end-to-end (E2E delay and frame reception ratio (FRR are evaluated by experiments. In addition, the paper discusses several directions for future improvements of home automation commercial products.

  3. Analyzing Performance for Mutual Authentication Mechanism for Wimax: IEEE 802.16e

    Directory of Open Access Journals (Sweden)

    Mrs. R. C. Roychaudhary

    2014-02-01

    Full Text Available The IEEE 802.16 designed to operate in the 10-66 GHz spectrum and it specifies the physical layer (PHY and medium access control layer (MAC of the air interface BWA systems. At 10-66 GHz range, transmission requires Line-of-Sight (LOS. IEEE 802.16 is working group number 16 of IEEE 802, specializing in point-tomultipoint broadband wireless access. The IEEE 802.16 Working Group created a new standard, commonly known as WiMAX, for broadband wireless access at high speed and low cost, which is easy to deploy, and which provides a scalable solution for extension of a fiber-optic backbone. WiMAX base stations can offer greater wireless coverage of about 5 miles, with LOS (line of sight transmission within bandwidth of up to 70 Mbps. WiMAX operates on the same general principles as WiFi -- it sends data from one computer to another via radio signals. A computer (either a desktop or a laptop equipped with WiMAX would receive data from the WiMAX transmitting station, probably using encrypted data keys to prevent unauthorized users from stealing access. The fastest WiFi connection can transmit up to 54 megabits per second under optimal conditions. WiMAX should be able to handle up to 70 megabits per second.

  4. Implementation of IEEE 802.15.4a Based UWB Systems for Coexistence with Primary Users

    Directory of Open Access Journals (Sweden)

    Caglar Findikli

    2016-03-01

    Full Text Available Peaceful coexistence is a major implementation issuefor both cognitive radios and ultra wideband (UWB systems.Accordingly, the UWB impulse radio (UWB-IR based WirelessPersonal Area Network (WPAN standard IEEE 802.15.4a hassuggested using linear combination of pulse to limit interfer-ence to coexisting primary systems. In this paper, motivatedby implementing the IEEE 802.15.4a based UWB-IR systemsfor peaceful coexistence, we consider the implementation oflinear combination of pulses as suggested by the standard.Accordingly, we (i design possible linearly combined pulses thatconform to the standard requirements, (ii consider coherentand noncoherent receiver structures that can be adapted for thephysical layer of the IEEE 802.15.4a standard, (iii investigatethe effect of channel models on the system performance, and(iv study the UWB-IR system performance in the presenceof narrowband and orthogonal frequency division multiplexing(OFDM based wideband primary systems with various band-widths and subcarriers. The study shows that the UWB-IR systemperformance can be significantly improved by selecting suitablepulses for transmission and employing appropriate filteringtechniques at the receiver when the primary system is active.For the implementation of IEEE 802.15.4a based UWB systemscomplying with coexistence requirements, the results of this studyshould be carefully considered.

  5. IEEE Radio and Wireless Symposium Student Awards Support Request: 2010-2012

    Science.gov (United States)

    2012-01-01

    Trasser, Sebastien Chartier , Hermann Schumacher. Analog Synchronous Receiver for Multi-Gigabit Wireless Communications, IEEE Radio and Wireless...Receiver for Multi-Gigabit Wireless Communications Cagri Ulusoy*, Gang Liu*, Andreas Trasser*, S´ebastien Chartier # and Hermann Schumacher* Ulm University

  6. Analysis and design of an on-chip retargeting engine for IEEE 1687 networks

    NARCIS (Netherlands)

    Ibrahim, Ahmed; Kerkhoff, Hans G.

    2016-01-01

    IEEE 1687 (iJTAG) standard introduces a methodology for accessing the increasing number of embedded instruments found in modern System-on-Chips. Retargeting is defined by iJTAG as the procedure of translating instrument-level patterns to system-level scan vectors for a certain network organization.

  7. Analysis of Throughput GTS and SDS in IEEE 802.15.4

    Directory of Open Access Journals (Sweden)

    Abhinav Singh

    2012-03-01

    Full Text Available the current IEEE 802.15.4 standard restricts the beacon enabled approach to star networks, while they support multi-hop networking in mesh but with no synchronization. In this paper there is proposal of a GTS with superframe scheduling for the chain network and throughput is observed.

  8. Performance Modeling of a Bottleneck Node in an IEEE 802.11 Ad-hoc Network

    NARCIS (Netherlands)

    Berg, van den Hans; Roijers, Frank; Mandjes, Michel R.H.; Kunz, T.; Ravi, S.S.

    2006-01-01

    The IEEE 802.11 MAC protocol, often used in ad-hoc networks, has the tendency to share the capacity equally amongst the active nodes, irrespective of their loads. An inherent drawback of this fair-sharing policy is that a node that serves as a relay-node for multiple flows is likely to become a bott

  9. Performance modelieg of a bottleneck node in an IEEE 802.11 ad-hoc network

    NARCIS (Netherlands)

    Berg, J.L. van den; Mandjes, M.; Roijers, F.

    2006-01-01

    The IEEE 802.11 MAC-protocol, often used in ad-hoc networks, has the tendency to share the capacity equally amongst the active nodes, irrespective of their loads. An inherent drawback of this fair-sharing policy is that a node that serves as a relay-node for multiple flows is likely to become a bott

  10. A Carrier Synchronization Algorithm for IEEE 802.11a System

    Institute of Scientific and Technical Information of China (English)

    WANG Chun-guang; ZHOU Zheng

    2004-01-01

    A new Carrier Frequency Offset (CFO) estimation algorithm for IEEE 80211a system is proposed. The extended Kalman filter (EKF) is applied to estimate the frequency offset in the acquisition stage and the cyclic prefix (CP) is used to correct the residual CFO in the tracking stage. Simulation results demonstrate the super performance of the proposed algorithm compared to Maximum-Likelihood (ML) approach.

  11. IEEE802.15.6 -based multi-accelerometer WBAN system for monitoring Parkinson's disease.

    Science.gov (United States)

    Keränen, Niina; Särestöniemi, Mariella; Partala, Juha; Hämäläinen, Matti; Reponen, Jarmo; Seppänen, Tapio; Iinatti, Jari; Jämsä, Timo

    2013-01-01

    In this paper we present a detailed example of a wireless body area network (WBAN) scenario utilizing the recent IEEE802.15.6 standard as applied to a multi-accelerometer system for monitoring Parkinson's disease and fall detection. Ultra wideband physical layer and standard security protocols are applied to meet application requirements for data rate and security.

  12. Adaptability of IEEE 802.15.4(Zigbee Protocol for Wireless Sensor network

    Directory of Open Access Journals (Sweden)

    Lalit Saraswat

    2010-05-01

    Full Text Available The IEEE 802.15.4/Zigbee protocol stack has been considered as a promising technology for Wireless Sensor Networks (WSN. IEEE 802.15.4 Low-Rate Wireless Personal Area Network (WPAN standardspecifies the lower protocol layers—the physical layer (PHY, and the media access control (MAC portion of the data link layer (DLL and Network layer(NWK Wireless sensor network provide the low rate, wireless interconnection of ultra low cost sensor/actuator devices to enable the cyber world to sense and affect the real physical environment. The IEEE 802.15.4/Zigbee protocol stack provide selectable levels of security using AES-128 mechanism for privacy, sender authentication, message integrity. It uses fully handshake protocol for transfer reliability. In business applications where WSN are applied, failures in essential parts of the sensor network must beefficiently detected and automatically recovered. ZigBee is targeted at radio-frequency (RF applications that require a low data rate, long battery life, and secure networking.This paper will analyze theadaptability features of IEEE802.15.4[3] at Physical, MAC and Network layer and various mode of operation at MAC layer.

  13. A Secure Simplification of the PKMv2 Protocol in IEEE 802.16e-2005

    DEFF Research Database (Denmark)

    Yuksel, Ender; Nielson, Hanne Riis; Nielsen, Christoffer Rosenkilde

    2007-01-01

    for IEEE 802.16e, PKMv2. This protocol seems to have an exaggerated mixture of security features. Thus, we iteratively investigate which components are necessary for upholding the security properties and which can be omitted safely. This approach is based on the LySa process calculus and employs...

  14. Adaptive Radio Resource Allocation in Hierarchical QoS Scheduling for IEEE 802.16 Systems

    DEFF Research Database (Denmark)

    Wang, Hua; Dittmann, Lars

    2007-01-01

    Future mobile communication systems such as IEEE 802.16 are expected to deliver a variety of multimedia services with diverse QoS requirements. To guarantee the QoS provision, appropriate scheduler architecture and scheduling algorithms have to be carefully designed. In this paper, we propose...

  15. Computer Controlled Test Systems. Introduction. A Course Based on the IEEE 488 Bus.

    Science.gov (United States)

    Herrmann, Eric J.

    An introductory course in computer automated tests and measurement systems based on the International Test Instrument-Computer Interface Standard, the IEEE (Institute of Electrical and Electronics Engineers)-488, is presented in this study guide. This course is designed to: (1) introduce the electronics engineering technician to the functional…

  16. Energy optimization based path selection algorithm for IEEE 802.11s wireless mesh networks

    CSIR Research Space (South Africa)

    Mhlanga, MM

    2011-09-01

    Full Text Available when the network is deployed in rural areas where electricity is a scarce resource. This research therefore presents an energy optimization based path selection algorithm for IEEE 802.11s WMNs which is aimed at addressing the above mentioned constrains...

  17. Evaluation of the Effects of Hidden Node Problems in IEEE 802.15.7 Uplink Performance.

    Science.gov (United States)

    Ley-Bosch, Carlos; Alonso-González, Itziar; Sánchez-Rodríguez, David; Ramírez-Casañas, Carlos

    2016-02-06

    In the last few years, the increasing use of LEDs in illumination systems has been conducted due to the emergence of Visible Light Communication (VLC) technologies, in which data communication is performed by transmitting through the visible band of the electromagnetic spectrum. In 2011, the Institute of Electrical and Electronics Engineers (IEEE) published the IEEE 802.15.7 standard for Wireless Personal Area Networks based on VLC. Due to limitations in the coverage of the transmitted signal, wireless networks can suffer from the hidden node problems, when there are nodes in the network whose transmissions are not detected by other nodes. This problem can cause an important degradation in communications when they are made by means of the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) access control method, which is used in IEEE 802.15.7 This research work evaluates the effects of the hidden node problem in the performance of the IEEE 802.15.7 standard We implement a simulator and analyze VLC performance in terms of parameters like end-to-end goodput and message loss rate. As part of this research work, a solution to the hidden node problem is proposed, based on the use of idle patterns defined in the standard. Idle patterns are sent by the network coordinator node to communicate to the other nodes that there is an ongoing transmission. The validity of the proposed solution is demonstrated with simulation results.

  18. Energy-aware path selection metric for IEEE 802.11s wireless mesh networking

    CSIR Research Space (South Africa)

    Mhlanga, MM

    2009-01-01

    Full Text Available The IEEE 802.11s working group has commenced activities, which would lead to the development of a standard for wireless mesh networks (WMNs). The draft of 802.11s introduces a new path selection metric called airtime link metric. However...

  19. The IEEE-SA patent policy update under the lens of EU competition law

    NARCIS (Netherlands)

    Kanevskaia, Olia; Zingales, Nicolo

    2016-01-01

    In 2015, the Institute of Electrical and Electronics Engineers (IEEE) Standardization Association made some controversial changes to its patent policy. The changes include a recommended method of calculation of FRAND royalty rates, and a request to members holding a standard-essential patent to fore

  20. The IEEE-SA patent policy update under the lens of EU competition law

    NARCIS (Netherlands)

    Kanevskaia, Olia; Zingales, Nicolo

    2016-01-01

    In 2015, the Institute of Electrical and Electronics Engineers (IEEE) Standardization Association made some controversial changes to its patent policy. The changes include a recommended method of calculation of FRAND royalty rates, and a request to members holding a standard essential patent (SEP) t

  1. A Secure Simplification of the PKMv2 Protocol in IEEE 802.16e-2005

    DEFF Research Database (Denmark)

    Yuksel, Ender; Nielson, Hanne Riis; Nielsen, Christoffer Rosenkilde

    2007-01-01

    for IEEE 802.16e, PKMv2. This protocol seems to have an exaggerated mixture of security features. Thus, we iteratively investigate which components are necessary for upholding the security properties and which can be omitted safely. This approach is based on the LySa process calculus and employs...

  2. Computer Controlled Test Systems. Introduction. A Course Based on the IEEE 488 Bus.

    Science.gov (United States)

    Herrmann, Eric J.

    An introductory course in computer automated tests and measurement systems based on the International Test Instrument-Computer Interface Standard, the IEEE (Institute of Electrical and Electronics Engineers)-488, is presented in this study guide. This course is designed to: (1) introduce the electronics engineering technician to the functional…

  3. Workshop Polli Talu Loomingulises Keskuses

    Index Scriptorium Estoniae

    2004-01-01

    MAP Intermedia Performance Collaboration'i (USA) workshop. Brendan McCall (liikumine), N. B. Aldrich (heli) ja Zach Poff (video) workshop tutvustab kolme kunstniku koostööd. Näidatakse ka multimeedia etendust, mis on külaliskunstnikel valminud Polli talus

  4. A Portable Computer Security Workshop

    Science.gov (United States)

    Wagner, Paul J.; Phillips, Andrew T.

    2006-01-01

    We have developed a computer security workshop designed to instruct post-secondary instructors who want to start a course or laboratory exercise sequence in computer security. This workshop has also been used to provide computer security education to IT professionals and students. It is effective in communicating basic computer security principles…

  5. New technology integration planning workshop

    Energy Technology Data Exchange (ETDEWEB)

    1980-01-01

    Purpose of the Workshop was to provide guidance, reflecting electric utility industry viewpoints, for developing and directing its research and development program structures to facilitate the integration of new energy technologies into electric utility systems. The Workshop was structured to directly elicit the positions and viewpoints representative of electric utility companies.

  6. Hydrogen Technology Education Workshop Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    None

    2002-12-01

    This document outlines activities for educating key target audiences, as suggested by workshop participants. Held December 4-5, 2002, the Hydrogen Technology Education Workshop kicked off a new education effort coordinated by the Hydrogen, Fuel Cells, & Infrastructure Technologies Program of the Office of Energy Efficiency and Renewable Energy.

  7. Beta Cell Workshop 2013 Kyoto

    DEFF Research Database (Denmark)

    Heller, R Scott; Madsen, Ole D; Nielsen, Jens Høiriis

    2013-01-01

    The very modern Kyoto International Conference Center provided the site for the 8th workshop on Beta cells on April 23-26, 2013. The preceding workshops were held in Boston, USA (1991); Kyoto, Japan (1994); Helsingør, Denmark (1997); Helsinki, Finland (2003); El Perello, Spain (2006); Peebles...

  8. Workshop Polli Talu Loomingulises Keskuses

    Index Scriptorium Estoniae

    2004-01-01

    MAP Intermedia Performance Collaboration'i (USA) workshop. Brendan McCall (liikumine), N. B. Aldrich (heli) ja Zach Poff (video) workshop tutvustab kolme kunstniku koostööd. Näidatakse ka multimeedia etendust, mis on külaliskunstnikel valminud Polli talus

  9. Presentation Skills Workshops for Nurses.

    Science.gov (United States)

    Kinn, S.; Kenyon, M.

    2002-01-01

    Workshops were held to prepare nurses (n=87) to present results of professional activities. One year after the course, 20 had made oral and 30 written presentations. The workshops increased their confidence and were considered practical, informal, and nonthreatening. (Contains 31 references.) (SK)

  10. Marketing Cooperative Education. A Workshop.

    Science.gov (United States)

    Mosser, John W.; Rea, Peter J.

    This document is a guide for a workshop on marketing college cooperative education programs. The guide takes the reader/workshop participant through the marketing process, from defining needs and resources to planning a marketing campaign, implementing it, and evaluating its success. Samples and sources also are provided. Topics covered in the…

  11. Singapore: The Fourth Way in Action?

    Science.gov (United States)

    Hargreaves, Andy

    2012-01-01

    This article has two main objectives. It first outlines the first three waves of change termed by Hargreaves and Shirley (The Fourth Way: The inspiring future for educational change. Thousand Oaks, CA: Corwin Press, "2009") as the First, Second and Third Way that defined global educational policy and practice since the 1960s. It then…

  12. Teaching Fourth Generation Evaluation through Monologue Interpretation.

    Science.gov (United States)

    Hepburn, Eric; Sparks, Cheryl

    1992-01-01

    This article illustrates the use of monologue interpretation, in which an interpreter illuminates issues in a speaker's monologue to translate theoretical pedagogical material into usable classroom applications. The example shows how the tenets of Guba and Lincoln's (1989) Responsive Constructivist Fourth Generation Model were presented via…

  13. The Fourth Basic: Computer Skills. Final Report.

    Science.gov (United States)

    Hardin County Board of Education, Elizabethtown, KY.

    Traditionally, the fundamental goal of all American education has been to provide students with adequate competencies in reading, writing, and mathematics. A year-long project, conducted at three high schools in Hardin County, Kentucky, provided for the development of a fourth basic: computer skills. Through this project, computer skills were…

  14. Fourth Generation War: Paradigm for Change

    Science.gov (United States)

    2005-06-01

    frustrated by the advantages that the weak acquire through 4GW, are also within the genre of the Fourth Generation. Terrorism is the strategy and tactic of...for SF. In order to examine these factors a brief overview of SF is necessary. 1. What Makes the SOF As per the techno-- thriller author Tom

  15. Vocabulary Strategies for a Fourth Grade Classroom

    Science.gov (United States)

    Howell, Gina

    2012-01-01

    For this project I worked with twelve of my fourth grade students from a local school in the southwestern part of Stokes County, North Carolina on increasing their vocabulary skills through the development and implementation of seven vocabulary strategies. During the Literature Review I came across the following seven strategies: Prediction;…

  16. An experiment with the fourth Futamura projection

    DEFF Research Database (Denmark)

    Glück, Robert

    2010-01-01

    We have experimentally validated the theoretical insight, that a compiler generator is an Ershov generating extension of a program specializer, by showing that an existing offline partial evaluator can perform the fourth Futamura projection. Specifically, an online and an offline partial evaluator...

  17. "Researching" with Third- and Fourth-Graders.

    Science.gov (United States)

    Liston, Barbara

    1970-01-01

    In order to instill in children the skills which will be basic to their school experience, words implying a process (such as "hemp,""parasite," and "vanilla") may be "researched" by third and fourth graders through the use of a dictionary, an encyclopedia, a supplementary book on the subject, and an interview with an adult. The child makes a…

  18. The Fourth Domain of Educational Objectives: Induction.

    Science.gov (United States)

    Holleman, Wes

    1985-01-01

    Tests the claim to comprehensiveness of Bloom's taxonomy of educational objectives by analyzing educational objectives of some freshmen orientation programs and those connected with human developmental tasks. It is concluded that the taxonomy should be enlarged with a fourth domain: actual induction into tasks for which students are being…

  19. IEEE 802.11ac sebagai Standar Pertama untuk Gigabit Wireless LAN

    Directory of Open Access Journals (Sweden)

    Afdhal Afdhal

    2014-04-01

    Full Text Available WLAN is a technology that currently has been used widely. This technology is considered as a data transferring media technology within the LAN/MAN. To ensure that WLAN technology can be used widely in the whole world, the IEEE has set a standard known as 802.11 to be an international standard for the WLAN technology. This standard was appeared in 1997, and has been revised and improved for several times. This improvement is done to anticipate the rapidly grown WLAN market as well as to keep this technology remains effective, efficient, and reliable at any time. At the beginning of 2014, the IEEE has set 802.11ac-2013 as a new standard for WLANs that operate below 6 GHz to achieve a data rate for up to 7 Gbps. The purpose of this article is to describe comprehensively the IEEE 802.11ac standard as a result of recent changes to the regulatory for WLAN technology which is known as the first standard issued by the IEEE for the gigabit WLANs. This article discusses the goals and objectives to be achieved by 802.11ac standard as well as the parts that have been enhanced significantly both in its PHY and MAC layers. This article will also contrast the differences between the 802.11ac standard and previous WLAN standards. Finally it will also explain the level of compatibility and interoperability of 802.11ac standards with some of previous WLAN standard.Keywords: IEEE, 802.11, 802.11ac, Gigabit WLAN

  20. IEEE 802.16J-Relay Fortified Aeromacs Networks; Benefits and Challenges

    Science.gov (United States)

    Kamali, Behnam; Apaza, Rafael D.

    2014-01-01

    Aeronautical Mobile Airport Communications System (AeroMACS) is an IEEE 802.16 standard-based (WiMAX) broadband aviation transmission technology, developed to provide safety critical communications coverage for airport surface in support of fixed and mobile ground to ground applications and services. We have previously demonstrated that IEEE 802.16j-amendment-based WiMAX is most feasible for AeroMACS applications. The principal argument in favor of application of IEEE 802.16j technology is the flexible and cost effective extension of radio coverage that is afforded by relay fortified WiMAX networks, with virtually no increase in the power requirements. In this article, following introductory remarks on airport surface communications, WiMAX and AeroMACS; the IEEE 802.16j-based WiMAX technology and multihop relay systems are briefly described. The two modes of relay operation supported by IEEE 802.16j amendment; i.e., transparent (TRS) and non-transparent (NTRS) modes, are discussed in some detail. Advantages and disadvantages of using TRS and NTRS in AeroMACS networks are summarized in a table. Practical issues vis--vis the inclusion of relays in AeroMACS networks are addressed. It is argued that the selection of relay type may affect a number of network parameters. A discussion on specific benefits and challenges of inclusion of relays in AeroMACS networks is provided. The article concludes that in case it is desired or necessary to exclusively employ one type of relay mode for all applications throughout an AeroMACS network, the proper selection would be the non-transparent mode.

  1. A versatile trigger and synchronization module with IEEE1588 capabilities and EPICS support

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, J.M., E-mail: juanmanuel.lopez@upm.e [Grupo de Investigacion en Instrumentacion y Acustica Aplicada, Universidad Politecnica de Madrid, Crta. Valencia Km-7, Madrid 28031 (Spain); Ruiz, M.; Borrego, J.; Arcas, G. de; Barrera, E. [Grupo de Investigacion en Instrumentacion y Acustica Aplicada, Universidad Politecnica de Madrid, Crta. Valencia Km-7, Madrid 28031 (Spain); Vega, J. [Asociacion EURATOM/CIEMAT para Fusion, Madrid (Spain)

    2010-07-15

    Event timing and synchronization are two key aspects to improve in the implementation of distributed data acquisition (dDAQ) systems such as the ones used in fusion experiments. It is also of great importance the integration of dDAQ in control and measurement networks. This paper analyzes the applicability of the IEEE1588 and EPICS standards to solve these problems, and presents a hardware module implementation based in both of them that allow adding these functionalities to any DAQ. The IEEE1588 standard facilitates the integration of event timing and synchronization mechanisms in distributed data acquisition systems based on IEEE 803.3 (Ethernet). An optimal implementation of such system requires the use of network interface devices which include specific hardware resources devoted to the IEE1588 functionalities. Unfortunately, this is not the approach followed in most of the large number of applications available nowadays. Therefore, most solutions are based in software and use standard hardware network interfaces. This paper presents the development of a hardware module (GI2E) with IEEE1588 capabilities which includes USB, RS232, RS485 and CAN interfaces. This permits to integrate any DAQ element that uses these interfaces in dDAQ systems in an efficient and simple way. The module has been developed with Motorola's Coldfire MCF5234 processor and National Semiconductors's PHY DP83640T, providing it with the possibility to implement the PTP protocol of IEEE1588 by hardware, and therefore increasing its performance over other implementations based in software. To facilitate the integration of the dDAQ system in control and measurement networks the module includes a basic Input/Output Controller (IOC) functionality of the Experimental Physics and Industrial Control System (EPICS) architecture. The paper discusses the implementation details of this module and presents its applications in advanced dDAQ applications in the fusion community.

  2. A versatile trigger and synchronization module with IEEE1588 capabilities and Epics support

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, J.M.; Ruiz, M.; Borrego, J.; Arcas, G. de; Barrera, E. [Universidad Politecnica de Madrid, Grupo de Investigacion en Instrumentacion y Acustica Aplicada, Madrid (Spain); Vega, J. [Asociacion EURATOM/CIEMAT para Fusion. Madrid (Spain)

    2009-07-01

    Event timing and synchronization are two key aspects to improve the implementation of distributed data acquisition (dDAQ) systems such as the ones used in fusion experiments. It is very important to integrate dDAQ in control and measurement networks. This poster analyzes the applicability of the IEEE 1588 and EPICS standards to solve these problems, and presents a hardware module implementation based in both of them that allow adding these functionalities to any DAQ. The IEEE1588 standard facilitates the integration of event timing and synchronization mechanisms in distributed data acquisition systems based on IEEE 803.3 (Ethernet). An optimal implementation of such system requires the use of network interface devices which include specific hardware resources devoted to the IEE1588 functionalities. Unfortunately, this is not the approach followed in most of the large number of applications available nowadays. Therefore, most solutions are based in software and use standard hardware network interfaces. This paper presents the development of a hardware module (GI2E) with IEEE 1588 capabilities which includes USB, RS232, RS485 and CAN interfaces. This permits the integration of any DAQ element that uses these interfaces in dDAQ systems in an efficient and simple way. The module has been developed with Motorola's Coldfire MCF5234 processor and National Semiconductors's PHY DP83640T, providing it with the possibility to implement the PTP protocol of IEEE 1588 by hardware, and therefore increasing its performance over other implementations based in software. To facilitate the integration of the dDAQ system in control and measurement networks the module includes a basic IOC (Input Output Controller) functionality of the EPICS (Experimental Physics and Industrial Control System) architecture. This document is a poster. (authors)

  3. First JECSS Workshop

    Science.gov (United States)

    Ichiye, Takashi

    The first Japan and East China Seas Study (JECSS) workshop convened at Tsukuba University, about 60 km north of Tokyo, Japan, June 1-4, 1981, to assess hydrographic data, review descriptive and theoretical Work, and promote future cooperation for studying the Japan Sea and East China Sea and marginal seas of the Western North Pacific Ocean. The conveners were Takashi Ichiye of Texas A&M University and Kenzo Takano of Tsukuba University, and the workshop was funded by the Hidaka Foundation, which was founded by Koji Hidaka, patriarch of dynamic oceanography in Japan.There were 41 participants: seven from the United States, six from Korea, one from the Peoples Republic of China, and 27 from Japan. Twenty-four papers were presented, and topics included the Japan Sea, the East China Sea, and marginal seas in general. Subjects concerned descriptive physical oceanography; internal waves, tides, and shelf waves; circulation modeling; data assessment; remote sensing; and sedimentology and marine chemistry. The seasonal change of the Tsushima Current, a branch of the Kuroshio in the Japan Sea, was determined by the Tohoku University group; preliminary results of the NOAA R/V Oceanographer cruise in Spring 1980 were presented; and the numerical modeling of the Japan Sea circulation, the tides of the Yellow Sea, and the barotropic current of the East China Sea were discussed. The papers presented will be published in 1982 in La Mer, a journal of the Japanese-French Oceanographical Society.

  4. GammaWorkshops Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Ramebaeck, H. (ed.) (Swedish Defence Research Agency (Sweden)); Straalberg, E. (Institute for Energy Technology, Kjeller (Norway)); Klemola, S. (Radiation and Nuclear Safety Authority, STUK (Finland)); Nielsen, Sven P. (Technical Univ. of Denmark. Risoe National Lab. for Sustainable Energy, Roskilde (Denmark)); Palsson, S.E. (Icelandic Radiation Safety Authority (Iceland))

    2012-01-15

    Due to a sparse interaction during the last years between practioners in gamma ray spectrometry in the Nordic countries, a NKS activity was started in 2009. This GammaSem was focused on seminars relevant to gamma spectrometry. A follow up seminar was held in 2010. As an outcome of these activities it was suggested that the 2011 meeting should be focused on practical issues, e.g. different corrections needed in gamma spectrometric measurements. This three day's meeting, GammaWorkshops, was held in September at Risoe-DTU. Experts on different topics relevant for gamma spectrometric measurements were invited to the GammaWorkshops. The topics included efficiency transfer, true coincidence summing corrections, self-attenuation corrections, measurement of natural radionuclides (natural decay series), combined measurement uncertainty calculations, and detection limits. These topics covered both lectures and practical sessions. The practical sessions included demonstrations of tools for e.g. corrections and calculations of the above meantioned topics. (Author)

  5. IEEE1588协议在工业以太网中的实现%Implementation of IEEE 1588 Protocol over Industrial Ethernet

    Institute of Scientific and Technical Information of China (English)

    关松青; 肖昌炎; 夏晓荣

    2011-01-01

    An IEEE 1588 server, which is based on the foreground/background system with the priorities of interrupts, is designed and implemented to meet the high precision requirement of time synchronization in distributed power systems by using an ARM(@)CortexTM-M3 based microcontroller, which supports IEEE 1588 protocol. The burden of microcontroller is reduced and the real-time performance is further improved as a result of adopting the lightweight TCP/IP stack and simplifying the protocol's complexity to program the bottom communication software. It is shown in test experiments that this server characterizes high clock-synchronizatiun accuracy, excellent stability and low cost, and it has a bright prosperity to be applied into practice.%为满足电力等分布式测控系统对时钟同步的高精度要求,采用TI公司支持IEEE 1588协议的Cortex-M3核ARM芯片作为微处理器,设计并实现一种基于中断优先级的前/后台框架的精密时钟网络服务器.由于选用轻量级TCP/IP协议栈(LwIP)和简化同步协议设计底层通信软件,能减轻处理器负担,实时性能得到改善.测试实验结果表明,该设备同步精度高、稳定性好、成本低,具有较好的应用前景.

  6. The 2001 activities and the 3rd workshop of the human resources development project in FNCA

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    In 1999, the Project for Human Resources Development (HRD) was initiated as defined in the framework of the Forum for Nuclear Cooperation in Asia (FNCA), organized by the Atomic Energy Commission of Japan. The objective of the HRD Project is to solidify the foundation of technologies for nuclear development and utilization in Asia by promoting human resources development in Asian countries. In the Project are two kinds of activity; In-workshop activity and Outside-of-workshop activity. The 3rd Workshop on Human Resources Development in the Nuclear Field was held on October 29 to November 1, at the Nuclear Training Center of KAERI. Participating countries were China, Indonesia, Republic of Korea, Japan, Malaysia, the Philippines, Thailand, and Vietnam. The secretariat for the Human Resources Development Project is provided by the Nuclear Training Center of the Korea Atomic Energy Research Institute and the Nuclear Technology and Education Center of the Japan Atomic Energy Research Institute. This report consists of presentation papers and materials at the Workshop as In-Workshop Activity, a document of project review on Human Resources Development for the fourth Coordinators Meeting of FNCA at Tokyo on March, 2002, a letter of proposal from the Project Leader of Japan to the project leaders of the participating countries, and training materials of participating countries as Outside-Workshop Activity. (author)

  7. The Third ATLAS ROD Workshop

    CERN Multimedia

    Poggioli, L.

    A new-style Workshop After two successful ATLAS ROD Workshops dedicated to the ROD hardware and held at the Geneva University in 1998 and in 2000, a new style Workshop took place at LAPP in Annecy on November 14-15, 2002. This time the Workshop was fully dedicated to the ROD-TDAQ integration and software in view of the near future integration activities of the final RODs for the detector assembly and commissioning. More precisely, the aim of this workshop was to get from the sub-detectors the parameters needed for T-DAQ, as well as status and plans from ROD builders. On the other hand, what was decided and assumed had to be stated (like EB decisions and URDs), and also support plans. The Workshop gathered about 70 participants from all ATLAS sub-detectors and the T-DAQ community. The quite dense agenda allowed nevertheless for many lively discussions, and for a dinner in the old town of Annecy. The Sessions The Workshop was organized in five main sessions: Assumptions and recommendations Sub-de...

  8. LIBER-EBLIDA Digitisation Workshop

    Directory of Open Access Journals (Sweden)

    Paul Ayris

    2008-03-01

    Full Text Available 95 participants from 23 countries attended a Workshop on the Digitisation of Library Material in Europe, from 24 to 26 October 2007 in the Royal Library, Copenhagen, Denmark. The Workshop was jointly organised by LIBER and EBLIDA. In a full report on the Workshop on the JISC website, the JISC highlighted that ‘high on the agenda were moves towards a European Digital Library – the delivery of integrated access to the digitised collections of libraries, archives and museums across the EU.’ At a global level, this was indeed one of the main aims of the Workshop. As the Chair of the breakout groups, and the final session of the Workshop, I gave an interview for the JISC immediately after the final session where I looked at what I thought were some of the issues to be identified by the Workshop. The purpose of this paper is to describe some of these issues in a little more detail and outline what work LIBER and EBLIDA have undertaken in the wake of the significant momentum which the Workshop has engendered for European digitisation activity.

  9. Workshop Econophys-2015

    CERN Document Server

    Aoyama, Hideaki; Chakrabarti, Bikas; Chakraborti, Anirban; Deo, Nivedita; Raina, Dhruv; Vodenska, Irena

    2017-01-01

    This book presents the proceedings from ECONOPHYS-2015, an international workshop held in New Delhi, India, on the interrelated fields of “econophysics” and “sociophysics”, which have emerged from the application of statistical physics to economics and sociology. Leading researchers from varied communities, including economists, sociologists, financial analysts, mathematicians, physicists, statisticians, and others, report on their recent work, discuss topical issues, and review the relevant contemporary literature. A society can be described as a group of people who inhabit the same geographical or social territory and are mutually involved through their shared participation in different aspects of life. It is possible to observe and characterize average behaviors of members of a society, an example being voting behavior. Moreover, the dynamic nature of interaction within any economic sector comprising numerous cooperatively interacting agents has many features in common with the interacting systems ...

  10. Workshop on Teaching Thermodynamics

    CERN Document Server

    1985-01-01

    It seemed appropriate to arrange a meeting of teachers of thermodynamics in the United Kingdom, a meeting held in the pleasant surroundings of Emmanuel College, Cambridge, in Sept~mber, 1984. This volume records the ideas put forward by authors, the discussion generated and an account of the action that discussion has initiated. Emphasis was placed on the Teaching of Thermodynamics to degree-level students in their first and second years. The meeting, a workshop for practitioners in which all were expected to take part, was remarkably well supported. This was notable in the representation of essentially every UK university and polytechnic engaged in teaching engineering thermodynamics and has led to a stimulating spread of ideas. By intention, the emphasis for attendance was put on teachers of engineering concerned with thermodynamics, both mechanical and chemical engineering disciplines. Attendance from others was encouraged but limited as follows: non-engineering acad­ emics, 10%, industrialists, 10%. The ...

  11. 2010 ENLIGHT Workshops

    CERN Multimedia

    ENLIGHT - European Network for LIGht ion Hadron Therapy; Manuela Cirilli

    2010-01-01

    ENLIGHT was established in 2002 to coordinate the European efforts in hadron therapy. Manjit Dosanjh, CERN’s Life Sciences Advisor (KTT), is also co-ordinator of the ENLIGHT network and some of the related programs. Under the umbrella of ENLIGHT, there are currently four EC-funded projects; PARTNER, ENVISION and ENTERVISION, co-ordinated by CERN and ULICE, co-ordinated by CNAO. The video brings you to the prestigious Nobel Forum at the Karolinska Institutet in Stockholm, where the ENLIGHT community gathered in September 2010 for the annual workshop. Meet the young researchers of the PARTNER Initial Training Network, and learn about the outcome of the Mid Term Review of the project conducted by the European Commission.

  12. Workshop on Interface Phenomena

    CERN Document Server

    Kreuzer, Hans

    1987-01-01

    This book contains the proceedings of the first Workshop on Interface Phenomena, organized jointly by the surface science groups at Dalhousie University and the University of Maine. It was our intention to concentrate on just three topics related to the kinetics of interface reactions which, in our opinion, were frequently obscured unnecessarily in the literature and whose fundamental nature warranted an extensive discussion to help clarify the issues, very much in the spirit of the Discussions of the Faraday Society. Each session (day) saw two principal speakers expounding the different views; the session chairmen were asked to summarize the ensuing discussions. To understand the complexity of interface reactions, paradigms must be formulated to provide a framework for the interpretation of experimen­ tal data and for the construction of theoretical models. Phenomenological approaches have been based on a small number of rate equations for the concentrations or mole numbers of the various species involved i...

  13. Workshop on Computational Optimization

    CERN Document Server

    2016-01-01

    This volume is a comprehensive collection of extended contributions from the Workshop on Computational Optimization 2014, held at Warsaw, Poland, September 7-10, 2014. The book presents recent advances in computational optimization. The volume includes important real problems like parameter settings for controlling processes in bioreactor and other processes, resource constrained project scheduling, infection distribution, molecule distance geometry, quantum computing, real-time management and optimal control, bin packing, medical image processing, localization the abrupt atmospheric contamination source and so on. It shows how to develop algorithms for them based on new metaheuristic methods like evolutionary computation, ant colony optimization, constrain programming and others. This research demonstrates how some real-world problems arising in engineering, economics, medicine and other domains can be formulated as optimization tasks.

  14. Student interaction in workshops

    DEFF Research Database (Denmark)

    Evers, Winie

    2014-01-01

    A kind of teaching for active learning has been experimented with at SDU Sønderborg as part of the course Supply Chain Dynamics. In this course the students learn about complex systems, system dynamics as well as supply chain instability and oscillation, the course lecturer invited the author...... to experiment with novel workshop methods and techniques, where objects are used to illustrate and model business issues (Heinemann et al, 2011, Buur et al, 2013). The idea was to see how students could be engaged in a different and more interactive way to learn about these topics, by assigning the students...... teaching should reflect this diversity by embracing and experimenting with multiple forms, including activation of students by students’ interaction and manipulation with objects....

  15. Workshop on Computational Optimization

    CERN Document Server

    2015-01-01

    Our everyday life is unthinkable without optimization. We try to minimize our effort and to maximize the achieved profit. Many real world and industrial problems arising in engineering, economics, medicine and other domains can be formulated as optimization tasks. This volume is a comprehensive collection of extended contributions from the Workshop on Computational Optimization 2013. It presents recent advances in computational optimization. The volume includes important real life problems like parameter settings for controlling processes in bioreactor, resource constrained project scheduling, problems arising in transport services, error correcting codes, optimal system performance and energy consumption and so on. It shows how to develop algorithms for them based on new metaheuristic methods like evolutionary computation, ant colony optimization, constrain programming and others.

  16. 2016 MICCAI Workshop

    CERN Document Server

    Ghosh, Aurobrata; Kaden, Enrico; Rathi, Yogesh; Reisert, Marco

    2017-01-01

    This volume offers a valuable starting point for anyone interested in learning computational diffusion MRI and mathematical methods for brain connectivity, while also sharing new perspectives and insights on the latest research challenges for those currently working in the field. Over the last decade, interest in diffusion MRI has virtually exploded. The technique provides unique insights into the microstructure of living tissue and enables in-vivo connectivity mapping of the brain. Computational techniques are key to the continued success and development of diffusion MRI and to its widespread transfer into the clinic, while new processing methods are essential to addressing issues at each stage of the diffusion MRI pipeline: acquisition, reconstruction, modeling and model fitting, image processing, fiber tracking, connectivity mapping, visualization, group studies and inference. These papers from the 2016 MICCAI Workshop “Computational Diffusion MRI” – which was intended to provide a snapshot of the la...

  17. 2014 MICCAI Workshop

    CERN Document Server

    Nedjati-Gilani, Gemma; Rathi, Yogesh; Reisert, Marco; Schneider, Torben

    2014-01-01

    This book contains papers presented at the 2014 MICCAI Workshop on Computational Diffusion MRI, CDMRI’14. Detailing new computational methods applied to diffusion magnetic resonance imaging data, it offers readers a snapshot of the current state of the art and covers a wide range of topics from fundamental theoretical work on mathematical modeling to the development and evaluation of robust algorithms and applications in neuroscientific studies and clinical practice.   Inside, readers will find information on brain network analysis, mathematical modeling for clinical applications, tissue microstructure imaging, super-resolution methods, signal reconstruction, visualization, and more. Contributions include both careful mathematical derivations and a large number of rich full-color visualizations.   Computational techniques are key to the continued success and development of diffusion MRI and to its widespread transfer into the clinic. This volume will offer a valuable starting point for anyone interested i...

  18. NOMA 2013 International Workshop

    CERN Document Server

    Fournier-Prunaret, Danièle; Nishio, Yoshifumi; Grácio, Clara

    2015-01-01

    In the field of Dynamical Systems, nonlinear iterative processes play an important role. Nonlinear mappings can be found as immediate models for many systems from different scientific areas, such as engineering, economics, biology, or can also be obtained via numerical methods permitting to solve non-linear differential equations. In both cases, the understanding of specific dynamical behaviors and phenomena is of the greatest interest for scientists. This volume contains papers that were presented at the International Workshop on Nonlinear Maps and their Applications (NOMA 2013) held in Zaragoza, Spain, on September 3-4, 2013. This kind of collaborative effort is of paramount importance in promoting communication among the various groups that work in dynamical systems and networks in their research theoretical studies as well as for applications. This volume is suitable for graduate students as well as researchers in the field.

  19. Summary of the PSI workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-03-01

    The PSI workshop had been held at JAERI-Naka, from March 15th to 16th, 2002. This workshop is held twice a year as the skull practice session to report the recent progress on the plasma - surface interactions of the experimental reactors such as ITER, JT-60, LHD, etc. and the development of the plasma facing components. There were 34 participants from the university and 18 participants from JAERI and 26 papers were presented. This booklet was published for the purpose of saving a record of this workshop performed in oral lecture form. (author)

  20. The Astronomy Workshop

    Science.gov (United States)

    Hamilton, Douglas P.

    2013-05-01

    Abstract (2,250 Maximum Characters): The Astronomy Workshop (http://janus.astro.umd.edu) is a collection of interactive online educational tools developed for use by students, educators, professional astronomers, and the general public. The more than 20 tools in the Astronomy Workshop are rated for ease-of-use, and have been extensively tested in large university survey courses as well as more specialized classes for undergraduate majors and graduate students. Here we briefly describe the tools most relevant for the Professional Dynamical Astronomer. Solar Systems Visualizer: The orbital motions of planets, moons, and asteroids in the Solar System as well as many of the planets in exoplanetary systems are animated at their correct relative speeds in accurate to-scale drawings. Zoom in from the chaotic outer satellite systems of the giant planets all the way to their innermost ring systems. Orbital Integrators: Determine the orbital evolution of your initial conditions for a number of different scenarios including motions subject to general central forces, the classic three-body problem, and satellites of planets and exoplanets. Zero velocity curves are calculated and automatically included on relevant plots. Orbital Elements: Convert quickly and easily between state vectors and orbital elements with Changing the Elements. Use other routines to visualize your three-dimensional orbit and to convert between the different commonly used sets of orbital elements including the true, mean, and eccentric anomalies. Solar System Calculators: These tools calculate a user-defined mathematical expression simultaneously for all of the Solar System's planets (Planetary Calculator) or moons (Satellite Calculator). Key physical and orbital data are automatically accessed as needed.

  1. 77 FR 12313 - Food Labeling Workshop; Public Workshop

    Science.gov (United States)

    2012-02-29

    ... University (OSU), Robert M. Kerr Food & Agricultural Products Center (FAPC), is announcing a public workshop... special accommodations due to a disability, please contact Karen Smith (see Contact) at least 7 days...

  2. Using fourth-generation evaluation in nursing.

    Science.gov (United States)

    Swenson, M M

    1991-03-01

    Evaluation is disciplined inquiry undertaken to determine the value, including merit and worth, of some entity: a curriculum program, a clinical intervention, an academic course, a care plan. An evaluation is conducted to improve or refine the thing being evaluated (evaluand) or to assess its impact and effectiveness. Evaluation in nursing has been designed using various positivistic and post-positivistic models in the first three "generations" in the evolution of evaluation practice. This article describes a new model of nursing evaluation more consistent with a nursing paradigm than with a traditional, scientific, medical paradigm. Responsive nursing evaluation informs and empowers all those involved in its outcomes (the stakeholders) when framed within the research stance called naturalistic or constructivist inquiry. The fourth-generation-evaluation approach of Guba and Lincoln (1989) is consistent with a nursing paradigm and a constructivist approach. Fourth-generation evaluation is presented with specific application to nursing evaluation.

  3. The Fourth Law of Behavior Genetics.

    Science.gov (United States)

    Chabris, Christopher F; Lee, James J; Cesarini, David; Benjamin, Daniel J; Laibson, David I

    2015-07-01

    Behavior genetics is the study of the relationship between genetic variation and psychological traits. Turkheimer (2000) proposed "Three Laws of Behavior Genetics" based on empirical regularities observed in studies of twins and other kinships. On the basis of molecular studies that have measured DNA variation directly, we propose a Fourth Law of Behavior Genetics: "A typical human behavioral trait is associated with very many genetic variants, each of which accounts for a very small percentage of the behavioral variability." This law explains several consistent patterns in the results of gene discovery studies, including the failure of candidate gene studies to robustly replicate, the need for genome-wide association studies (and why such studies have a much stronger replication record), and the crucial importance of extremely large samples in these endeavors. We review the evidence in favor of the Fourth Law and discuss its implications for the design and interpretation of gene-behavior research.

  4. The "fourth dimension" of gene transcription.

    Science.gov (United States)

    O'Malley, Bert W

    2009-05-01

    The three dimensions of space provide our relationship to position on the earth, but the fourth dimension of time has an equally profound influence on our lives. Everything from light and sound to weather and biology operate on the principle of measurable temporal periodicity. Consequently, a wide variety of time clocks affect all aspects of our existence. The annual (and biannual) cycles of activity, metabolism, and mating, the monthly physiological clocks of women and men, and the 24-h diurnal rhythms of humans are prime examples. Should it be surprising to us that the fourth dimension also impinges upon gene expression and that the genome itself is regulated by the fastest running of all biological clocks? Recent evidence substantiates the existence of such a ubiquitin-dependent transcriptional clock that is based upon the activation and destruction of transcriptional coactivators.

  5. Imitatio Christi in the fourth gospel

    Directory of Open Access Journals (Sweden)

    D.G. van der Merwe

    2001-08-01

    Full Text Available Imitatio Christi is a concept which, although not referred to explicitly in the Fourth Gospel, is clearly spelled out in relation to the agency motif occurring in the Gospel. The disciples of Jesus have been appointed as his agents to continue his mission after his departure to his Father. In giving this message through to his readers, the Fourth Evangelist refers to Jesus' calling of his disciples, [Foreign font omitted]; pictures Jesus as [Foreign font omitted]; uses [Foreign font omitted] (the particle of comparison to compare the lives of the disciples with that of Jesus; points out the tasks the disciples had to perform after Jesus' ascension and, finally, indicates how Jesus dwells in his disciples through the Paraclete.

  6. Report of the workshop on Climate Sensitivity

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The IPCC Working Group I (WGI) held this Workshop on Climate Sensitivity as a major keystone in activities preparing for the WGI contribution to the IPCC Fourth Assessment Report (AR4). One of the most important parameters in climate science is the 'climate sensitivity', broadly defined as the global mean temperature change for a given forcing, often that of a doubling of atmospheric carbon dioxide. Climate sensitivity has played a central role throughout the history of IPCC in interpretation of model outputs, in evaluation of future climate changes expected from various scenarios, and it is closely linked to attribution of currently observed climate changes. An ongoing challenge to models and to climate projections has been to better define this key parameter, and to understand the differences in computed values between various models. Throughout the last three IPCC assessments the climate sensitivity has been estimated as being in the range 1.5 to 4.5 deg. C for CO{sub 2} doubling (i.e., uncertain by a factor of three), making this parameter central to discussions of uncertainty in climate change. The aims of the workshop were to: - Evaluate a range of climate model results so as to relate different climate sensitivity estimates to differences descriptions of physical processes, particularly those related to atmospheric water vapor, clouds, lapse rate changes, ocean heat uptake, treatment of evapotranspiration, land-atmosphere coupling, etc.; - Obtain a more comprehensive picture of the relationships between climate sensitivity and other model features such as resolution, numerical approach, radiative transfer parameters, etc.; - Consider how current, historical, and paleo-climatic data can aid in the determination of the likely range of climate sensitivity; - Improve the understanding of the interpretation and limits of the climate sensitivity concept, including for example possible dependencies upon different forcing agents, predictability questions

  7. Fourth international conference on Networks & Communications

    CERN Document Server

    Meghanathan, Natarajan; Nagamalai, Dhinaharan; Computer Networks & Communications (NetCom)

    2013-01-01

    Computer Networks & Communications (NetCom) is the proceedings from the Fourth International Conference on Networks & Communications. This book covers theory, methodology and applications of computer networks, network protocols and wireless networks, data communication technologies, and network security. The proceedings will feature peer-reviewed papers that illustrate research results, projects, surveys and industrial experiences that describe significant advances in the diverse areas of computer networks & communications.

  8. On a fourth order superlinear elliptic problem

    Directory of Open Access Journals (Sweden)

    M. Ramos

    2001-01-01

    Full Text Available We prove the existence of a nonzero solution for the fourth order elliptic equation $$Delta^2u= mu u +a(xg(u$$ with boundary conditions $u=Delta u=0$. Here, $mu$ is a real parameter, $g$ is superlinear both at zero and infinity and $a(x$ changes sign in $Omega$. The proof uses a variational argument based on the argument by Bahri-Lions cite{BL}.

  9. Fourth World Theory: The Evolution of . . .

    OpenAIRE

    2014-01-01

    Fourth World theory is a methodology for examining and developing greater understanding of the extent of the distress and abandonment commonly found in the cores of American cities resulting from de-industrialization, historic segregation and discrimination patterns, suburban sprawl, erosion of a viable tax base, racism, inability to embrace the concept of desegregation and civil rights legislation, fear, despair, crumbling infrastructure systems, disinvestment in urban school systems, and en...

  10. Supernumerary maxillary and Mandibular Fourth Molars.

    Science.gov (United States)

    1981-09-23

    in earlier primates then in man. Hyperdontia has occasionally been associated with clefts of the lip and palate , I0 cleldocranial dysostosis, 2...year-old black male was seen In the clinic for treatment of pain which was originating from a deep carious lesion in the mandibular left second molar...incompletely formed impacted left fourth molar and right bicuspid were also noted. Case III. A 24-year-old male was seen in the clinic for treatment of

  11. The fourth China Bioanalysis Forum Annual Meeting.

    Science.gov (United States)

    Tang, Daniel; Zhong, Dafang; Dong, Kelly

    2017-01-01

    The fourth China Bioanalysis Forum annual conference, co-organized with the Nanjing International Drug Metabolism Conference, was successfully held in Nanjing, China, between 24-26 June 2016. The theme of the conference was 'how to conduct regulated bioanalysis under China Food and Drug Administration (CFDA) regulations'. In addition, several hot topics including bioanalytical challenges, solutions for biomarkers, antidrug antibody (antibody-drug conjugates) and biologics were discussed. This Conference Report summarizes the major discussion topics from the conference.

  12. Next generation WLAN technology--IEEE 802.11ac%下一代WLAN技术IEEE 802.11ac

    Institute of Scientific and Technical Information of China (English)

    郭正跃

    2013-01-01

    IEEE 802.11ac是继802.11n的下一代无线局域网新技术标准,本文主要介绍了802.11ac在新技术方面的特性,重点介绍了MU-MIMO系统在802.11ac中的应用,包括MU-MIMO中多用户调度公平性问题的解决及目前最新的SLNR波束成形技术对多用户间干扰问题的解决方案。%IEEE 802.11ac is the second generation of 802.11n wireless LAN technical standard. The paper mainly introduces the features in new technical aspect and highlights the MU-MIMO system in the application of 802.11ac including the solution of multi-user scheduling fairness problem in MU-MIMO and the latest SLNR beam-forming techniques for multi-user interference.

  13. Art meets mathematics in the fourth dimension

    CERN Document Server

    Lipscomb, Stephen Leon

    2014-01-01

    To see objects that live in the fourth dimension we humans would need to add a fourth dimension to our three-dimensional vision. An example of such an object that lives in the fourth dimension is a hyper-sphere or “3-sphere”. The quest to imagine the elusive 3-sphere has deep historical roots: medieval poet Dante Alighieri, in his circa 1300 AD Divine Comedy, used a 3-sphere to convey his allegorical vision of the Christian afterlife. In 1917, Albert Einstein visualized the universe, at each instant in time, as a 3-sphere. He described his representation as “…the place where the reader’s imagination boggles. Nobody can imagine this thing.” Over time, however, our understanding of the concept of dimension evolved. By 2003, a researcher had successfully rendered into human vision the structure of a 4-web (think of an every increasingly-dense spider’s web). In this text Stephen Lipscomb takes his innovative dimension theory research a step further, using the 4-web to reveal a new partial image of a...

  14. Telling time in the Fourth Gospel

    Directory of Open Access Journals (Sweden)

    Jerome H. Neyrey

    2008-01-01

    Full Text Available When we begin the task of telling time in the Fourth Gospel, we bring something not found in any previous study, namely, a model of time articulated by cross- ultural anthropologists (Bordieu, in Pitt-Rivers 1963:55-72, Ayoade, in Wright 1984:71-89. As much as we admire Davies’ study, she has no notes to her chapter on time nor any citations in her bibliography to indicate that she has any conversation partners, much less cultural experts, a deficit to be filled in this study. Learning to tell time entails three theoretical considerations: a definition of time, key classifications of it, and special attention to what the ancients meant by past, present and future. With these lenses we are prepared to do as thorough a study as we can on telling time in the Fourth Gospel. As we consider each classification, we will suggest a brief meaning of it from the experts on time, then present a body of Greco-Roman materials illustrative of the classification, and finally use it to gather and interpret data in John. Proving the native existence of these classifications for telling time in antiquity is essential for readers to have a background against which to compare their usage with that of the Fourth Gospel.

  15. Fourth order difference methods for hyperbolic IBVP's

    Science.gov (United States)

    Gustafsson, Bertil; Olsson, Pelle

    1994-01-01

    Fourth order difference approximations of initial-boundary value problems for hyperbolic partial differential equations are considered. We use the method of lines approach with both explicit and compact implicit difference operators in space. The explicit operator satisfies an energy estimate leading to strict stability. For the implicit operator we develop boundary conditions and give a complete proof of strong stability using the Laplace transform technique. We also present numerical experiments for the linear advection equation and Burgers' equation with discontinuities in the solution or in its derivative. The first equation is used for modeling contact discontinuities in fluid dynamics, the second one for modeling shocks and rarefaction waves. The time discretization is done with a third order Runge-Kutta TVD method. For solutions with discontinuities in the solution itself we add a filter based on second order viscosity. In case of the non-linear Burger's equation we use a flux splitting technique that results in an energy estimate for certain different approximations, in which case also an entropy condition is fulfilled. In particular we shall demonstrate that the unsplit conservative form produces a non-physical shock instead of the physically correct rarefaction wave. In the numerical experiments we compare our fourth order methods with a standard second order one and with a third order TVD-method. The results show that the fourth order methods are the only ones that give good results for all the considered test problems.

  16. A network architecture for precision formation flying using the IEEE 802.11 MAC Protocol

    Science.gov (United States)

    Clare, Loren P.; Gao, Jay L.; Jennings, Esther H.; Okino, Clayton

    2005-01-01

    Precision Formation Flying missions involve the tracking and maintenance of spacecraft in a desired geometric formation. The strong coupling of spacecraft in formation flying control requires inter-spacecraft communication to exchange information. In this paper, we present a network architecture that supports PFF control, from the initial random deployment phase to the final formation. We show that a suitable MAC layer for the application protocol is IEEE's 802.11 MAC protocol. IEEE 802.11 MAC has two modes of operations: DCF and PCF. We show that DCF is suitable for the initial deployment phase while switching to PCF when the spacecraft are in formation improves jitter and throughput. We also consider the effect of routing on protocol performance and suggest when it is profitable to turn off route discovery to achieve better network performance.

  17. Capacity Evaluation for IEEE 802.16e Mobile WiMAX

    Directory of Open Access Journals (Sweden)

    Chakchai So-In

    2010-01-01

    Full Text Available We present a simple analytical method for capacity evaluation of IEEE 802.16e Mobile WiMAX networks. Various overheads that impact the capacity are explained and methods to reduce these overheads are also presented. The advantage of a simple model is that the effect of each decision and sensitivity to various parameters can be seen easily. We illustrate the model by estimating the capacity for three sample applications—Mobile TV, VoIP, and data. The analysis process helps explain various features of IEEE 802.16e Mobile WiMAX. It is shown that proper use of overhead reducing mechanisms and proper scheduling can make an order of magnitude difference in performance. This capacity evaluation method can also be used for validation of simulation models.

  18. RSAD: A Robust Distributed Contention-Based Adaptive Mechanism for IEEE 802.11 Wireless LANs

    Institute of Scientific and Technical Information of China (English)

    Yong Peng; Shi-Duan Cheng; Jun-Liang Chen

    2005-01-01

    Previous researches have shown that Distributed Coordination Function (DCF) access mode of IEEE 802.11 has lower performance in heavy contention environment. Based on the in-depth analysis of IEEE 802.11 DCF, NSAD (New Self-adapt DCF-based protocol) has been proposed to improve system saturation throughput in heavy contention condition.The initial contention window tuning algorithm of NSAD is proved effective in error-free environment. However, problems concerning the exchanging of initial contention window occur in error-prone environment. Based on the analysis of NSAD's performance in error-prone environment, RSAD is proposed to further enhance the performance. Simulation in a more real shadowing error-prone environment is done to compare the performance of NSAD and RSAD and results have shown that RSAD can achieve further performance improvement as expected in the error-prone environment than NSAD (i.e., better goodput and fairness index).

  19. Performance evaluation on IEEE 802.11e considering emergency calls in congested situation

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    To enhance the quality of service (QoS) support in IEE 802.11, IEEE 802.11e has been studied, which introduces the so-called hybrid coordination function (HCF). HCF includes two medium access mechanisms: contention-based channel access (EDCA), and contention-free channel access (HCCA). Although IEEE 802.11e has provided differentiated channel access mechanism, when call demand rises for important festivals such as New Year's Day or large scale natural disasters such as earthquakes, the delay of voice will increase and the QoS of voice nodes will drop down rapidly. Through our simulation study, in order to guarantee the QoS of emergency voice calls in congested situation, a higher priority for these calls will be required.

  20. Performance Analysis of IEEE 802.16e Wimax Physical Layer

    Directory of Open Access Journals (Sweden)

    Dr. Vineeta Saxena Nigam *,

    2014-05-01

    Full Text Available WiMAX (worldwide inter-operability for microwave access is an emerging technology for global broadband wireless system offering high speed access to mobile and broadband services. It is based on IEEE 802.16e standard. This standard only deals with MAC and PHY layer specification of network architecture. Considerable research has been done on performance analysis of PHY layer model of WiMAX system over AWGN channel model. This paper attempts performance analysis of IEEE 802.16e PHY layer model over AWGN as well as SUI channel models as SUI channel models are more realistic models based on empirical results. Different modulation schemes, coding rates, and different values of cyclic prefix are considered for comparison using BER (Bit error rate ratio and SNR (Signal to Noise ratio as performance parameters.

  1. Real-Time Performance Analysis of Infrastructure-based IEEE 802.11 Distributed Coordination Function

    CERN Document Server

    Xia, Feng; Wang, Linqiang; Hao, Ruonan

    2012-01-01

    With the increasing popularity of wireless networks, wireless local area networks (WLANs) have attracted significant research interest, which play a critical role in providing anywhere and anytime connectivity. For WLANs the IEEE 802.11 standard is the most mature technology and has been widely adopted for wireless networks. This paper analyzes real-time performance of the IEEE 802.11 standard that adopts the MAC protocol of Distributed Coordination Function (DCF) operating in infrastructure mode. Extensive simulations have been done to examine how the network performance in terms of realtime metrics including effective data rate, latency and packet loss rate will be impacted by some critical parameters (e.g. CWmin and packet payload). The results are presented and analyzed. The analysis of simulation results can provide support for parameter configuration and optimization of WLANs for realtime applications.

  2. Integration of IEEE 1451 and HL7 Exchanging Information for Patients’ Sensor Data

    Science.gov (United States)

    Lim, Suyoung; Ahn, Jinsoo; Nah, Jiyoung; Kim, Namhyun

    2009-01-01

    HL7 (Health Level 7) is a standard developed for exchanging incompatible healthcare information generated from programs or devices among heterogenous medical information systems. At present, HL7 is growing as a global standard. However, the HL7 standard does not support effective methods for treating data from various medical sensors, especially from mobile sensors. As ubiquitous systems are growing, HL7 must communicate with various medical transducers. In the area of sensor fields, IEEE 1451 is a group of standards for controlling transducers and for communicating data from/to various transducers. In this paper, we present the possibility of interoperability between the two standards, i.e., HL7 and IEEE 1451. After we present a method to integrate them and show the preliminary results of this approach. PMID:20703604

  3. Performance Analytical Model of IEEE 802.11 Distributed Coordination Function

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    IEEE 802.11 distributed coordination function (DCF) is a distributed medium access scheme based on carrier sense multiple access with collision avoidance (CSMA/CA) protocol. Many literatures have analyzed the performance of IEEE 802.11 DCF. However, such literatures either used simulation methods or built the analytical models under the assumption that the saturation condition was satisfied. To overcome such a problem, in this paper, a bi-dimensional Markovian model has been introduced to depict the DCF mechanism. The proposed model introduced an idle stage and a discrete time M/G/1 queue to deduce the channel throughput under finite load traffic. Simulation results proved the accuracy of the proposed model.

  4. An Improved Markov Model for IEEE 802.15.4 Slotted CSMA/CA Mechanism

    Institute of Scientific and Technical Information of China (English)

    Hao Wen; Chuang Lin; Zhi-Jia Chen; Hao Yin; Tao He; Eryk Dutkiewicz

    2009-01-01

    IEEE 802.15.4 protocol is proposed to meet the low latency and energy consumption needs in low-rate wireless applications, however, few analytical models are tractable enough for comprehensive evaluation of the protocol. To evaluate the IEEE 802.15.4 slotted CSMA/CA channel access mechanism in this paper, we propose a practical and accurate discrete Markov chain model, which can dynamically represent different network loads. By computing the steady-state distribution probability of the Markov chain, we obtain an evaluation formula for throughput, energy consumption, and access latency. Then we further analyze the parameters that influence performance including packet arrival rate, initial backoff exponent and maximum backoff number. Finally, NS2 simulator has been used to evaluate the performance of the 802.15.4 CSMA/CA mechanism under different scenarios and to validate the accuracy of the proposed model.

  5. The Research of ST-OFDM in Physical Layer of IEEE 802.16a

    Institute of Scientific and Technical Information of China (English)

    JU Mei-yan; ZHU Qi; FENG Guang-zeng

    2004-01-01

    This paper briefly introduces one of the three physical layer implementations of IEEE 802.16a[1], Wireless MAN-OFDM PHY. Based on the implementation, the combination of Orthogonal Frequency Division Multiplexing (OFDM) and Space-Time Coding ( STC ) which is briefly called ST-OFDM in IEEE 802.16a, is investigated under the channel provided in Ref . [ 2 ]. Especially, this paper is focused on the influence of the optimal decision threshold on the system Bit-Error-Rate ( BER ) performance based on unequal probabilities of sources. The simulations show that when SignalNoise-Ratio ( SNR ) is low the optimal decision threshold is obviously superior to the usual one; when SNR is high to some extent, such as 10 dB for 4QAM and 16 dB for 16QAM, we can use the usual decision threshold instead of the optimal one .

  6. Pilot Based Channel Estimation in IEEE 802.16a OFDM System

    Institute of Scientific and Technical Information of China (English)

    ZHU Qi; LU Hao

    2005-01-01

    Orthogonal Frequency Division Multiplexing(OFDM)is a kind of transmission techniques with high frequency efficiency,which will be widely used in next-generation wireless communication systems.In this paper,pilot-based channel estimation for IEEE 802.16a OFDM system is studied.By comparing the performance of LS(least squares)estimator and Linear Minimum Mean-Square Error(LMMSE)estimator using Preamble 1 and Preamble 2 suggested by IEEE 802.16a standard in slow fading channel,we propose that Preamble 1 can be used in small multipath delay spread channel and Preamble 2 can be used in large multipath delay spread channel.Considering the tradeoff between performance and complexity,the LS estimator is suggested.

  7. A Novel IEEE 802.15.4e DSME MAC for Wireless Sensor Networks

    Science.gov (United States)

    Sahoo, Prasan Kumar; Pattanaik, Sudhir Ranjan; Wu, Shih-Lin

    2017-01-01

    IEEE 802.15.4e standard proposes Deterministic and Synchronous Multichannel Extension (DSME) mode for wireless sensor networks (WSNs) to support industrial, commercial and health care applications. In this paper, a new channel access scheme and beacon scheduling schemes are designed for the IEEE 802.15.4e enabled WSNs in star topology to reduce the network discovery time and energy consumption. In addition, a new dynamic guaranteed retransmission slot allocation scheme is designed for devices with the failure Guaranteed Time Slot (GTS) transmission to reduce the retransmission delay. To evaluate our schemes, analytical models are designed to analyze the performance of WSNs in terms of reliability, delay, throughput and energy consumption. Our schemes are validated with simulation and analytical results and are observed that simulation results well match with the analytical one. The evaluated results of our designed schemes can improve the reliability, throughput, delay, and energy consumptions significantly.

  8. A Priority and SDB based Admission Control in IEEE 802.16 Systems

    Directory of Open Access Journals (Sweden)

    Xiu-ying Sun

    2010-09-01

    Full Text Available In IEEE 802.16 systems, the algorithm of admission control (AC is very important in guaranteeing the Quality of Service (QoS and managing service flows. However, the IEEE 802.16 standards do not specify any related strategies or algorithms on AC. In order to improve the system performance and satisfy the QoS of stations to the max, we propose a new AC strategy, which includes a weighted blocking rate based priority strategy and a satisfaction-degree based bandwidth-borrowing strategy named SDB in this paper. The simulation results show that the proposed strategy improves the overall performance of system in terms of weighted blocking rate. Furthermore, our strategy enhances the QoS in comparison with the strategy adopting conventional bandwidth-borrowing algorithm.

  9. Securing IEEE 802.11g WLAN Using Open VPN and its Impact Analysis

    Directory of Open Access Journals (Sweden)

    Praveen Likhar

    2011-12-01

    Full Text Available Like most advances, wireless LAN poses both opportunities and risks. The evolution of wireless networking in recent years has raised many serious security issues. These security issues are of greatconcern for this technology as it is being subjected to numerous attacks. Because of the free-space radio transmission in wireless networks, eavesdropping becomes easy and consequently a security breach may result in unauthorized access, information theft, interference and service degradation. Virtual Private Networks (VPNs have emerged as an important solution to security threats surrounding the use of public networks for private communications. While VPNs for wired line networks have matured in both research and commercial environments, the design and deployment of VPNs for WLAN is still an evolving field. This paper presents an approach to secure IEEE 802.11g WLAN using OpenVPN, a transport layer VPN solution and its impact on performance of IEEE 802.11g WLAN.

  10. Performance evaluation of beacon enabled IEEE 802.15.4 under NS2

    CERN Document Server

    Charfi, Faiza

    2012-01-01

    The increasing demand for real-time applications has made the Quality of Service (Qos) support for wireless sensor networks (WSN) a fairly new research framework. In this paper, we propose an extended model of the Beacon enabled IEEE 802.15.4 including the Guaranteed Time Slot GTS allocation mechanism in the aim to analyze and evaluate network performances. Series of extensive simulations were performed to analyze the impact of the Beacon Order BO and the Superframe Order SO on the network performance based on commonly known metrics. In particular, we examine data packet delivery performance and the throughput for different duty cycle rates. Also, we analyze the impact of the number of nodes on collision probability. Thus, for high number of nodes, collision becomes higher and the reachability begins to decline slightly. We discuss and compare simulation results conducted under various parameter settings to the IEEE 802.11 network.

  11. Transient Stability Improvement of IEEE 9 Bus System Using Power World Simulator

    Directory of Open Access Journals (Sweden)

    Kaur Ramandeep

    2016-01-01

    Full Text Available The improvement of transient stability of power system was one of the most challenging research areas in power engineer.The main aim of this paper was transient stability analysis and improvement of IEEE 9 bus system. These studies were computed using POWER WORLD SIMULATOR. The IEEE 9 bus system was modelled in power world simulator and load flow studies were performed to determine pre-fault conditions in the system using Newton-Raphson method. The transient stability analysis was carried out using Runga method during three-phase balanced fault. For the improvement transient stability, the general methods adopted were fast acting exciters, FACT devices and addition of parallel transmission line. These techniques play an important role in improving the transient stability, increasing transmission capacity and damping low frequency oscillations.

  12. Securing IEEE 802.11G WLAN Using OpenVPN and Its Impact Analysis

    CERN Document Server

    Likhar, Praveen; M, Keshava Rao; 10.5121/ijnsa.2011.3607

    2012-01-01

    Like most advances, wireless LAN poses both opportunities and risks. The evolution of wireless networking in recent years has raised many serious security issues. These security issues are of great concern for this technology as it is being subjected to numerous attacks. Because of the free-space radio transmission in wireless networks, eavesdropping becomes easy and consequently a security breach may result in unauthorized access, information theft, interference and service degradation. Virtual Private Networks (VPNs) have emerged as an important solution to security threats surrounding the use of public networks for private communications. While VPNs for wired line networks have matured in both research and commercial environments, the design and deployment of VPNs for WLAN is still an evolving field. This paper presents an approach to secure IEEE 802.11g WLAN using OpenVPN, a transport layer VPN solution and its impact on performance of IEEE 802.11g WLAN.

  13. A Fast MAC-Layer Handover for an IEEE 802.16e-Based WMAN

    Science.gov (United States)

    Ray, Sayan K.; Pawlikowski, Krzysztof; Sirisena, Harsha

    We propose a modification of the IEEE 802.16e hard handover (HHO) procedure, which significantly reduces the handover latency constraint of the original HHO procedure in IEEE 802.16e networks. It allows a better handling of the delay-sensitive traffic by avoiding unnecessary time-consuming scanning and synchronization activity as well as simplifies the network re-entry procedure. With the help of the backhaul network, it reduces the number of control messages in the original handover policy, making the handover latency acceptable also for real-time streaming traffic. Preliminary performance evaluation studies show that the modified handover procedure is able to reduce the total handover latency by about 50%.

  14. Uplink Scheduling for Supporting Real Time Voice Traffic in IEEE 802.16 Backhaul Networks

    Institute of Scientific and Technical Information of China (English)

    Lizhong Dai; Dongmei Zhao

    2008-01-01

    In this paper we propose simple enhancements to the bandwidth (BW) request messages in IEEE 802.16 for supporting real-time packet voice traffic. Three different BW request formats are proposed, each requiring a different amount of latency information about the buffered packets at the SS. On this basis, packet scheduling schemes are proposed for the BS to make resource allocations for real-time traffic. Our results show that the proposed BW request and scheduling schemes achieve significantly lower packet loss probability than the standard IEEE 802.16 BW request with round robin scheduling.The results further show that there is an optimum point about how much delay information the SS should report to the BS in order to best utilize the uplink resources while the SS provides satisfactory real-time performance for the voice traffic.

  15. Performance Evaluation Of BEACON-ENABLED IEEE 802.15.4 Under NS2

    Directory of Open Access Journals (Sweden)

    Faiza Charfi

    2012-04-01

    Full Text Available The increasing demand for real-time applications has made the Quality of Service (Qos support for wireless sensor networks (WSN a fairly new research framework. In this paper, we propose an extended model of the Beacon enabled IEEE 802.15.4 including the Guaranteed Time Slot GTS allocation mechanism in the aim to analyze and evaluate network performances. Series of extensive simulations were performed to analyze the impact of the Beacon Order BO and the Superframe Order SO on the network performance based on commonly known metrics. In particular, we examine data packet delivery performance and the throughput for different duty cycle rates. Also, we analyze the impact of the number of nodes on collision probability. Thus, for high number of nodes, collision becomes higher and the reachability begins to decline slightly. We discuss and compare simulation results conducted under various parameter settings to the IEEE 802.11network.

  16. A Survey of Mobile WiMAX IEEE 802.16m Standard

    CERN Document Server

    Rakesh, Jha; Dalal, Upena

    2010-01-01

    IEEE 802.16m amends the IEEE 802.16 Wireless MAN-OFDMA specification to provide an advanced air interface for operation in licenced bands. It will meet the cellular layer requirements of IMT-Advanced next generation mobile networks. It will be designed to provide significantly improved performance compared to other high rate broadband cellular network systems. For the next generation mobile networks, it is important to consider increasing peak, sustained data reates, corresponding spectral efficiencies, system capacity and cell coverage as well as decreasing latency and providing QoS while carefully considering overall system complexity. In this paper we provide an overview of the state-of-the-art mobile WiMAX technology and its development. We focus our discussion on Physical Layer, MAC Layer, Schedular,QoS provisioning and mobile WiMAX specification.

  17. A nomadic access mechanism for enabling dynamic video surveillance over IEEE 802.15.4 networks

    Science.gov (United States)

    Garcia-Sanchez, Felipe; Garcia-Sanchez, Antonio-Javier; Losilla, Fernando; Garcia-Haro, Joan

    2010-12-01

    IEEE 802.15.4 networking technology is designed to be the common standard for integrating WSN applications in heterogeneous environments. However, applications considering mobile nodes along with strict temporal requirements, such as those required for video transmission, are an unexplored field for this technology. These applications involve different challenges and issues that the direct employment of the IEEE 802.15.4 standard does not resolve. Therefore, in this paper a cross-layer mechanism consisting of application and medium access arbitration is presented, enabling the efficient connection and operation of mobile nodes together with the transmission of video flows. The proposed mechanism is evaluated via simulation and its feasibility checked by means of a first prototype. The study of power consumption is also taken into account and so are the quality of service parameters and the human quality perception of the received video stream. The results obtained are presented and further discussed.

  18. Hybrid Polling Method for Direct Link Communication for IEEE 802.11 Wireless LANs

    Directory of Open Access Journals (Sweden)

    Woo-Yong Choi

    2008-10-01

    Full Text Available The direct link communication between STAtions (STAs is one of the techniques to improve the MAC performance of IEEE 802.11 infrastructure networks. For the efficient direct link communication, in the literature, the simultaneous polling method was proposed to allow the multiple direct data communication to be performed simultaneously. However, the efficiency of the simultaneous polling method is affected by the interference condition. To alleviate the problem of the lower polling efficiency with the larger interference range, the hybrid polling method is proposed for the direct link communication between STAs in IEEE 802.11 infrastructure networks. By the proposed polling method, we can integrate the sequential and simultaneous polling methods properly according to the interference condition. Numerical examples are also presented to show the medium access control (MAC performance improvement by the proposed polling method.

  19. A Novel IEEE 802.15.4e DSME MAC for Wireless Sensor Networks.

    Science.gov (United States)

    Sahoo, Prasan Kumar; Pattanaik, Sudhir Ranjan; Wu, Shih-Lin

    2017-01-16

    IEEE 802.15.4e standard proposes Deterministic and Synchronous Multichannel Extension (DSME) mode for wireless sensor networks (WSNs) to support industrial, commercial and health care applications. In this paper, a new channel access scheme and beacon scheduling schemes are designed for the IEEE 802.15.4e enabled WSNs in star topology to reduce the network discovery time and energy consumption. In addition, a new dynamic guaranteed retransmission slot allocation scheme is designed for devices with the failure Guaranteed Time Slot (GTS) transmission to reduce the retransmission delay. To evaluate our schemes, analytical models are designed to analyze the performance of WSNs in terms of reliability, delay, throughput and energy consumption. Our schemes are validated with simulation and analytical results and are observed that simulation results well match with the analytical one. The evaluated results of our designed schemes can improve the reliability, throughput, delay, and energy consumptions significantly.

  20. A note on bound constraints handling for the IEEE CEC'05 benchmark function suite.

    Science.gov (United States)

    Liao, Tianjun; Molina, Daniel; de Oca, Marco A Montes; Stützle, Thomas

    2014-01-01

    The benchmark functions and some of the algorithms proposed for the special session on real parameter optimization of the 2005 IEEE Congress on Evolutionary Computation (CEC'05) have played and still play an important role in the assessment of the state of the art in continuous optimization. In this article, we show that if bound constraints are not enforced for the final reported solutions, state-of-the-art algorithms produce infeasible best candidate solutions for the majority of functions of the IEEE CEC'05 benchmark function suite. This occurs even though the optima of the CEC'05 functions are within the specified bounds. This phenomenon has important implications on algorithm comparisons, and therefore on algorithm designs. This article's goal is to draw the attention of the community to the fact that some authors might have drawn wrong conclusions from experiments using the CEC'05 problems.

  1. 2011 IEEE Visualization Contest Winner: Visualizing Unsteady Vortical Behavior of a Centrifugal Pump

    KAUST Repository

    Otto, Mathias

    2012-09-01

    In the 2011 IEEE Visualization Contest, the dataset represented a high-resolution simulation of a centrifugal pump operating below optimal speed. The goal was to find suitable visualization techniques to identify regions of rotating stall that impede the pump\\'s effectiveness. The winning entry split analysis of the pump into three parts based on the pump\\'s functional behavior. It then applied local and integration-based methods to communicate the unsteady flow behavior in different regions of the dataset. This research formed the basis for a comparison of common vortex extractors and more recent methods. In particular, integration-based methods (separation measures, accumulated scalar fields, particle path lines, and advection textures) are well suited to capture the complex time-dependent flow behavior. This video (http://youtu.be/ oD7QuabY0oU) shows simulations of unsteady flow in a centrifugal pump. © 2012 IEEE.

  2. Performance analysis of IEEE 802.11n network under unsaturated conditions

    Science.gov (United States)

    Lang, Gaiping; Ma, Lin; Xu, Yubin

    2017-07-01

    Frame aggregation is the most important medium access control (MAC) enhancement of IEEE 802.11n. In frame aggregation, multiple frames are encapsulated into a single frame. In the analysis of 802.11n performance, the existing researches assumed that each station always had a packet for transmission. But actually, sometimes stations may have no packet to transmit. In this paper, we develop an analytical model for IEEE 802.11n in unsaturated conditions. Therefore, the transmission of the station is assumed to be a bulk service queue system. Bulk size is aggregation size. According to the 802.11n standard, when the number of packets in the buffer is smaller than the aggregation size, we can also transmit all the packets in the buffer using A-MPDU. Therefore, bulk size is variable. The throughput and mean access delay are achieved. Numerical results show that the proposed algorithm can effectively increase the throughput and lower the access delay.

  3. Integration of IEEE 1451 and HL7 exchanging information for patients' sensor data.

    Science.gov (United States)

    Kim, Wooshik; Lim, Suyoung; Ahn, Jinsoo; Nah, Jiyoung; Kim, Namhyun

    2010-12-01

    HL7 (Health Level 7) is a standard developed for exchanging incompatible healthcare information generated from programs or devices among heterogenous medical information systems. At present, HL7 is growing as a global standard. However, the HL7 standard does not support effective methods for treating data from various medical sensors, especially from mobile sensors. As ubiquitous systems are growing, HL7 must communicate with various medical transducers. In the area of sensor fields, IEEE 1451 is a group of standards for controlling transducers and for communicating data from/to various transducers. In this paper, we present the possibility of interoperability between the two standards, i.e., HL7 and IEEE 1451. After we present a method to integrate them and show the preliminary results of this approach.

  4. AN IMPROVED CHANNEL DETECTION METHOD FOR IEEE 802.11N MIMO SYSTEM

    Institute of Scientific and Technical Information of China (English)

    Yao Xiaocheng; Jian Haifang; Fang Zhi; Shi Yin

    2011-01-01

    Coexistence and interoperability between 20 MHz and 40 MHz device and modes of operations are stressed in standard IEEE 802.11n system.It is mandate to report the both sub-channels states to Medium Access Control (MAC) at receiver,since for 40 MHz device,it should serve not only 20 MHz but also 40 MHz signals receiving.Both energy detection and carrier sense are employed to detect channel state.In the case of 20/40 M mode,the power difference between the two sub-channels is also detected in order to report the channel state accurately.The simulation results demonstrate that the performance of the proposed methods are much better than the methods which just employ energy detection.Besides,the simulation results show that the proposed methods ensure that the channel sensing is not a roadblock of IEEE 802.11n system design.

  5. The Exploration of Network Coding in IEEE 802.15.4 Networks

    Directory of Open Access Journals (Sweden)

    Deze Zeng

    2011-01-01

    communication protocol should be energy efficient. The IEEE 802.15.4 is designed as a standard protocol for low power, low data rate, low complexity, and short range connections in WPANs. The standard supports allocating several numbers of collision-free guarantee time slots (GTSs within a superframe for some time-critical transmissions. Recently, COPE was proposed as a promising network coding architecture to essentially improve the throughput of wireless networks. In this paper, we exploit the network coding technique at coordinators to improve energy efficiency of the WPAN. Some related practical issues, such as GTS allocation and multicast, are also discussed in order to exploit the network coding opportunities efficiently. Since the coding opportunities are mostly exploited, our proposal achieves both higher energy efficiency and throughput performance than the original IEEE 802.15.4.

  6. Skills Labs: workshop EMERGO toolkit

    NARCIS (Netherlands)

    Kurvers, Hub; Slootmaker, Aad

    2009-01-01

    Kurvers, H. J., & Slootmaker, A. (2009). Skills Labs: workshop EMERGO toolkit. Presentation given at project members of Skills Labs. March, 31, 2009 and April, 24, 2009, Heerlen, The Netherlands: Open University of the Netherlands.

  7. Women in Astronomy Workshop Report

    CERN Document Server

    Brough, Sarah; Brooks, Kate; Hopkins, Andrew; Maddison, Sarah

    2011-01-01

    Here we report on the Women in Astronomy Workshop (http://asawomeninastronomy.org/meetings/wia2011/), which was held on 13 May 2011 in Sydney, Australia. The workshop was organised by the Astronomical Society of Australia's Chapter on Women in Astronomy, to discuss some of the issues that face women in astronomy and make recommendations to help support the success of women in Australian astronomy but came to broader conclusions that have value for the whole astronomical community. The workshop consisted of four sessions, with presentations by invited speakers on demographics, leadership, varied career paths, and how institutions & individuals can help. The workshop ended with a discussion panel that summarised the day's debate and presented a list of recommendations for the Australian astronomical community (both individuals and institutions) that are provided in this report.

  8. Research of time synchronization technology based on IEEE 1588v2 in optical communication network%基于IEEE1588v2协议的光网络时间同步技术研究

    Institute of Scientific and Technical Information of China (English)

    李恩; 刘志强; 敬玉乡; 丁明吉

    2011-01-01

    分析了现有光网络中时间同步实现方法的不足,阐述了IEEE 1588v2协议的基本原理,提出了IEEE 1588v2协议在光通信网络中实现时间同步的方法,指出精确时间同步协议在光网络中的应用前景和发展方向.%This paper analyses the disadvantage of time synchronization in the optical communication network, and illustrated the fundamental principle of IEEE 1588v2 protocol, the synchronization method about IEEE 1588v2 protocol in optical communication network time was proposed. Finally,it showed the application and development direction of precision time synchronization protocol in optical communication network.

  9. IEEE 802.15.4: a Federating Communication Protocol for Time-Sensitive Wireless Sensor Networks

    OpenAIRE

    Koubâa, Anis; Alves, Mário; Tovar, Eduardo

    2006-01-01

    Wireless Sensor Networks (WSNs) have been attracting increasing interests for developing a new generation of embedded systems with great potential for many applications such as surveillance, environment monitoring, emergency medical response and home automation. However, the communication paradigms in WSNs differ from the ones attributed to traditional wireless networks, triggering the need for new communication protocols. In this context, the recently standardised IEEE 802.15....

  10. Generalization of the proposed IEEE standard for floating-point arithmetic

    Energy Technology Data Exchange (ETDEWEB)

    Cody, W.J.

    1982-12-10

    Several years ago the Microprocessor Standards Committee of the IEEE Computer Society established a Floating-Point Working Group to draft a standard binary floating-point arithmetic on 32-bit microprocessors. As that task neared completion, a second working group was established to generalize the proposed binary standard for other radices and wordlengths. We discuss the emerging generalization, its influence on final deliberations on the proposed binary standard, and the implications for numerical computation.

  11. An NTP Stratum-One Server Farm Fed By IEEE-1588

    Science.gov (United States)

    2010-01-01

    synchronized to its Master Clocks via IRIG -B time code on a low- frequency RF distribution system. The availability of Precise Time Protocol (PTP, IEEE...forwarding back to the requestor. The farm NTP servers are synchronized to the USNO Master Clocks using IRIG -B time code. The current standard NTP... IRIG -B and provide memory-mappable BCD time clocks. The standard NTP distribution is augmented with a USNO- developed NTP reference clock driver for

  12. Performance Evaluation of IEEE 802.15.4 under Jamming DoS Attack

    OpenAIRE

    2013-01-01

    Wireless Sensor Network (WSN) is a wireless network consisting of small nodes with sensing, computation, and wireless communications capabilities. The design of wireless sensor networks depends of many factors, such as transmission errors, network topology and power consumption. Many routing protocols, protocols for data transmission, are specifically designed for wireless sensor networks where energy consumption is essential. This paper provides a brief description of the IEEE 802.15.4/ZigBe...

  13. Interpretation of IEEE-854 floating-point standard and definition in the HOL system

    Science.gov (United States)

    Carreno, Victor A.

    1995-01-01

    The ANSI/IEEE Standard 854-1987 for floating-point arithmetic is interpreted by converting the lexical descriptions in the standard into mathematical conditional descriptions organized in tables. The standard is represented in higher-order logic within the framework of the HOL (Higher Order Logic) system. The paper is divided in two parts with the first part the interpretation and the second part the description in HOL.

  14. Study of asymmetric traffic influence on IEEE 802.11 WLAN family, enhancement proposals

    OpenAIRE

    López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep

    2004-01-01

    This paper is focused on the study of WLAN performance in IEEE 802.11 networks that are in a situation of asymmetric traffic, where the access point (AP) transmits much more than the user stations (US). This situation is very different from the symmetric one, wherein all the stations have the same traffic load. The paper also presents a discussion of the different mechanisms in order to increase AP priority under the asymmetric traffic situation. Peer Reviewed

  15. The Impact of Dynamic RTS Threshold Adjustment for IEEE 802.11 MAC Protocol

    OpenAIRE

    Mostafa Mjidi; Debasish Chakraborty; Naoki Nakamura; Norio Shiratori

    2009-01-01

    In recent years, wireless technologies and application received great attention. The Medium Access Control (MAC) protocol is the main element that determines the efficiency in sharing the limited communication bandwidth of the wireless channel in wireless local area networks (WLANs). IEEE 802.11 introduced the optional RTS/CTS handshaking mechanism to address the hidden terminal problem as well as to reduces the chance of collision in case of higher node density and traffic. RTS Threshold (RT...

  16. [Mobile Health: IEEE Standard for Wearable Cuffless Blood Pressure Measuring Devices].

    Science.gov (United States)

    Zhou, Xia; Wu, Wenli; Bao, Shudi

    2015-07-01

    IEEE Std 1708-2014 breaks through the traditional standards of cuff based blood pressure measuring devices and establishes a normative definition of wearable cuffless blood pressure measuring devices and the objective performance evaluation of this kind of devices. This study firstly introduces the background of the new standard. Then, the standard details will be described, and the impact of cuffless blood pressure measuring devices with the new standard on manufacturers and end users will be addressed.

  17. 基于IEEE802.16的OFDM同步问题分析

    Institute of Scientific and Technical Information of China (English)

    赵莹琦

    2011-01-01

    在OFDM(正交频分复用)系统中,收发双方的同步是决定通信系统性能的重要指标.该文阐述了IEEE802.16中的OFDM同步问题,并对存在的偏差进行分析.对学习OFDM起到了一定的指导作用.

  18. Practical support for Lean Six Sigma software process definition using IEEE software engineering standards

    CERN Document Server

    Land, Susan K; Walz, John W

    2012-01-01

    Practical Support for Lean Six Sigma Software Process Definition: Using IEEE Software Engineering Standards addresses the task of meeting the specific documentation requirements in support of Lean Six Sigma. This book provides a set of templates supporting the documentation required for basic software project control and management and covers the integration of these templates for their entire product development life cycle. Find detailed documentation guidance in the form of organizational policy descriptions, integrated set of deployable document templates, artifacts required in suppo

  19. 6th International Microbeam Workshop

    Energy Technology Data Exchange (ETDEWEB)

    Dr Kevin M. Prise

    2004-01-01

    The extended abstracts which are submitted here present a summary of the proceedings of the 6th International Workshop/12th LH Gray Workshop: Microbeam Probes of Cellular Radiation Response, held at St. Catherine's College, University of Oxford, UK on March, 29th-31st, 2003. In 1993 the 4th LH Gray Workshop entitled ''Microbeam Probes of Cellular Radiation Response'' was held at the Gray Cancer Institute in Northwood. This was organized by Prof BD Michael, Dr M. Folkard and Dr KM Prise and brought together 40 participants interested in developing and applying new microbeam technology to problems in radiation biology (1). The workshop was an undoubted success and has spawned a series of subsequent workshops every two years. In the past, these workshops have been highly successful in bringing together groups interested in developing and applying micro-irradiation techniques to the study of cell and tissue damage by ionizing radiations. Following the first microbeam workshop, there has been a rapid growth in the number of centres developing radiobiology microbeams, or planning to do so and there are currently 15-20 worldwide. Much of the recent research using microbeams has used them to study low-dose effects and ''non-targeted'' responses such bystander effects, genomic instability and adaptive responses. The goal of the 6th workshop was to build on our knowledge of the development of microbeam approaches and the application to radiation biology in the future with the meeting stretching over a 3 day period. Over 80 participants reviewed the current state of radiobiology microbeam research worldwide and reported on new technological developments both in the fields of physics and biology.

  20. IFPA meeting 2008 workshops report

    DEFF Research Database (Denmark)

    Lash, G.E.; Ansari, T.; Bischof, P.

    2009-01-01

    Workshops are an important part of the IFPA annual meeting. At the IFPA meeting 2008 diverse topics were discussed in 12 themed workshops. Topics covered included: immunology of placentation; galectins and trophoblast invasion; signaling in implantation and invasion; markers to identify trophoblast...... subpopulations; placental pathology; placental toxicology; sterology; placental transport of fatty acids; placental mesenchymal stem cells; comparative placentation; trophoblst and neoplasia; trophoblast differentiation. This report is a summary of the various topics covered....

  1. BER Performance of IEEE 802.11ad for Single Carrier and Multi Carrier

    Directory of Open Access Journals (Sweden)

    Abhishek Kumar Gupta

    2012-05-01

    Full Text Available In present scenario 802.11n is one of the fastest standards which is widely popular. It provides a theoretical maximum of 450 megabits per second (Mbps, with a typical throughput of 100Mbps. As we know, there is high demand for higher speed due to an increasing of high definition (HD video on smart phone usage and home entertainment. As 802.11n is not able to provide the required speed needed for these uses, thus there is need for technologies which can meet therequirement. IEEE 802.11ad is one of such standards which meet the requirement needed for the above. IEEE 802.11ad standard operates at 60 GHz frequency, promise to deliver from 1 to 7 Gbps. 60 GHz band is one of the largest unlicensed bandwidth with availability of at least 5 GHz of continuous bandwidth worldwide. In this paper we have tested the IEEE 802.11ad system model Bits Error Rate (BER for different modulation technique under several coding scheme for both Single Carrier and Multi Carriers. In this model the modulation technique mainly used are Binary Phase Shift Keying (BPSK, Quaternary Phase Shift Keying (QPSK, 16-Quadrature Amplitude Modulation (QAM, 64-Quadrature Amplitude Modulation (QAM and the coding scheme used is Low Density Parity Check (LDPC code with different code rate.

  2. A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks

    Directory of Open Access Journals (Sweden)

    Navid Tadayon

    2010-01-01

    Full Text Available IEEE 802.11 WLAN utilizes a distributed function at its MAC layer, namely, DCF to access the wireless medium. Due to its distributed nature, DCF is able to guarantee working stability in a wireless medium while maintaining the assembling and maintenance cost in a low level. However, DCF is inefficient in dealing with real-time traffics due to its incapability on providing QoS. IEEE 802.11e was introduced as a supplementary standard to cope with this problem. This standard introduces an Enhanced Distributed Coordination Function (EDCF that works based on diff-Serve model and can serve multiple classes of traffics (by using different prioritizations schemes. With the emergence of new time-sensitive applications, EDCF has proved to be yet inefficient in dealing with these kinds of traffics because it could not provide network with well-differentiated QoS. In this study, we propose a novel prioritization scheme to improve QoS level in IEEE 802.11e network. In this scheme, we replace Uniform PDF with Gamma PDF, which has salient differentiating properties. We investigate the suitability and superiority of this scheme on furnishing network with well-differentiated QoS using probabilistic analysis. We strengthen our claims by extensive simulation runs.

  3. An improved IEEE 802.11 protocol for reliable data transmission in power distribution fault diagnosis

    Energy Technology Data Exchange (ETDEWEB)

    Campoccia, F.; Di Silvestre, M.L.; Sanseverino, E.R.; Zizzo, G. [Palermo Univ., Palermo (Italy)

    2010-10-15

    In power systems, on-line transmission between local units and the central unit can be done by means of power line communications or wireless technology. During an electrical fault, the reliability of the distribution system depends on the security of the timely protective and restorative actions on the network. This paper focused on the WiFi system because of its economy and ease of installation. However, WiFi systems are typically managed by the IEEE 802.11 protocol, which is not reliable in terms of security in data communication. In WiFi networks, data is divided into packets and sent in succession to reduce errors within the radio channel. The IEEE 802.11 protocol has high probability for loss of packets or delay in their transmission. In order to ensure the reliability of data transmission times between two terminal units connected by WiFi stations, a new protocol was derived by modifying the IEEE 802.11. The improvements of the new protocol were highlighted and its capability for the diagnostic service was verified. The modified protocol eliminates the danger of collisions between packets and optimizes the transmission time for sending information. 6 refs., 7 tabs., 8 figs.

  4. Fairness resource allocation and scheduling for IEEE 802.16 Mesh networks

    Directory of Open Access Journals (Sweden)

    Limin Peng

    2010-06-01

    Full Text Available The IEEE 802.16 standard provides a scheme for creating multi-hop relay networks, which can be deployed as a high speed wide area wireless network at low cost. Although the standard defines signaling mechanisms in mesh mode, however, it doesn’t specify wireless resource management in the protocol. In this paper, we address the problem of resource allocation with the goal of providing fairness access to wireless channel for all the nodes as well as high network throughput in IEEE 802.16 mesh networks. We first define node’s unsatisfactory index and throughput function. Then, a multi-objective programming formulation is proposed for optimizing network performance. Accordingly, a dynamic programming based resource allocation and scheduling algorithm is presented to provide an optimal resource allocation to achieve fairness among different nodes as well as high network throughput in IEEE 802.16 mesh networks. Simulation results show that our proposed algorithm significantly provides both fairness of channel access and optimal network throughput.

  5. Survey of Down Link Data Allocation Algorithms in IEEE 802.16 WiMAX

    Directory of Open Access Journals (Sweden)

    Ahmed M Husein Shabani

    2012-08-01

    Full Text Available IEEE 802.16 standard and its marketing technology Worldwide Interoperability for Microwave Access (WiMAX is one of the leading technology that gain benefit of adopting orthogonal frequency division multiple access (OFDMA as its multiple access technique. OFDMA gives flexibility in resources allocation to accommodate a large number of users supporting several services classes with quality of service (QoS. This loads big challenges on its resource allocation. One of the key performance factors of OFDMA resource allocation is its downlink data packing mechanism. In IEEE802.16 standard based OFDMA the downlink data is packed into down link frames in the form of rectangular slots called burst.The standard leaves details of packing mechanism as an open issue for researchers and manufacturer to implement. Therefore recently several algorithms have been proposed in literature. This paper endeavours to identify key factors and tradeoffs issues associated with designing of downlink data packing algorithm for WiMAX based IEEE802.16 through a competitive survey of recent proposed algorithms.

  6. Segmentized Clear Channel Assessment for IEEE 802.15.4 Networks

    Directory of Open Access Journals (Sweden)

    Kyou Jung Son

    2016-06-01

    Full Text Available This paper proposed segmentized clear channel assessment (CCA which increases the performance of IEEE 802.15.4 networks by improving carrier sense multiple access with collision avoidance (CSMA/CA. Improving CSMA/CA is important because the low-power consumption feature and throughput performance of IEEE 802.15.4 are greatly affected by CSMA/CA behavior. To improve the performance of CSMA/CA, this paper focused on increasing the chance to transmit a packet by assessing precise channel status. The previous method used in CCA, which is employed by CSMA/CA, assesses the channel by measuring the energy level of the channel. However, this method shows limited channel assessing behavior, which comes from simple threshold dependent channel busy evaluation. The proposed method solves this limited channel decision problem by dividing CCA into two groups. Two groups of CCA compare their energy levels to get precise channel status. To evaluate the performance of the segmentized CCA method, a Markov chain model has been developed. The validation of analytic results is confirmed by comparing them with simulation results. Additionally, simulation results show the proposed method is improving a maximum 8.76% of throughput and decreasing a maximum 3.9% of the average number of CCAs per packet transmission than the IEEE 802.15.4 CCA method.

  7. Multi-model Music Content Description and Retrieval Using IEEE 1599 XML Standard

    Directory of Open Access Journals (Sweden)

    Alberto Pinto

    2009-02-01

    Full Text Available The new format IEEE 1599 for music and audio content description defines a standard for the representation of retrieval models within music and music/audio formats that makes use of XML documents as content descriptors. In this article, it is described how music/audio semantics can be actually represented within the Structural Layer of IEEE 1599, thanks to the introduction of novel Music Information Retrieval (MIR objects that can be exploited by music search engines. A complete description of MIR objects is provided and it is shown how they can be used to embed metadata relative to specific music retrieval models, thus allowing for the description of music content in different retrieval contexts. To this aim, a new concept for MIR Model is introduced together with its formalization and tools provided by category theory. The role of MIR objects and morphisms in music content description and retrieval is explained. Furthermore, a concrete example is given with the implementation of a graph-based model within the IEEE 1599 framework.

  8. Performance Evaluation of Beacon-Enabled Mode for IEEE 802.15.4 Wireless Sensor Network

    Directory of Open Access Journals (Sweden)

    M. Udin Harun Al Rasyid

    2013-12-01

    Full Text Available IEEE 802.15.5 standard support structure of star and peer-to-peer network formation. Strating from these, the cluster tree network can be built as a special case of peer-to-peer network to increse coverage area. In this paper, we provide an performance evaluation of beacon- enabled mode for IEEE 802.15.4 wireless sensor network on star and cluster topology in order to get the maximum result to apply the appropriate topology model as needed. We conduct analysis on each topology model by using the numbers of nodes from 10 nodes to 100 nodes to analyze throughput, delay, energy consumption, and probability success packet by using NS2 simulator. The simulation results show that the throughput and the probability of success packet of cluster topology are higher than that of star topology, and the energy consumption of cluster topology is lesser than that of star topology. However, cluster topology increases the delay more than star topology. Keywords: IEEE 802.15.4, wireless sensor network, beacon-enabled mode, topology, csma/ca

  9. Analysis and Enhancement of IEEE 802.15.4e DSME Beacon Scheduling Model

    Directory of Open Access Journals (Sweden)

    Kwang-il Hwang

    2014-01-01

    Full Text Available In order to construct a successful Internet of things (IoT, reliable network construction and maintenance in a sensor domain should be supported. However, IEEE 802.15.4, which is the most representative wireless standard for IoT, still has problems in constructing a large-scale sensor network, such as beacon collision. To overcome some problems in IEEE 802.15.4, the 15.4e task group proposed various different modes of operation. Particularly, the IEEE 802.15.4e deterministic and synchronous multichannel extension (DSME mode presents a novel scheduling model to solve beacon collision problems. However, the DSME model specified in the 15.4e draft does not present a concrete design model but a conceptual abstract model. Therefore, in this paper we introduce a DSME beacon scheduling model and present a concrete design model. Furthermore, validity and performance of DSME are evaluated through experiments. Based on experiment results, we analyze the problems and limitations of DSME, present solutions step by step, and finally propose an enhanced DSME beacon scheduling model. Through additional experiments, we prove the performance superiority of enhanced DSME.

  10. A versatile electrical penetration design qualified to IEEE Std. 317-1983

    Energy Technology Data Exchange (ETDEWEB)

    Lankenau, W.; Wetherill, T.M. [Imaging & Sensing Technology Corp., Horseheads, NY (United States)

    1994-12-31

    Although worldwide demand for new construction of nuclear power stations has been on a decline, the available opportunities for the design and construction of qualified electrical penetrations continues to offer challenges, requiring a highly versatile design. Versatility is necessary in order to meet unique customer requirements within the constraints of a design basis qualified to IEEE Std. 317-1983. This paper summarizes such a versatile electrical penetration designed, built and tested to IEEE Std. 317-1983. The principal features are described including major materials of construction. Some of the design constraints such as sealing requirements, and conductor density (including numerical example) are discussed. The requirements for qualification testing of the penetration assembly to IEEE Std. 317-1983 are delineated in a general sense, and some typical test ranges for preconditioning, radiation exposure, and LOCA are provided. The paper concludes by describing ways in which this versatile design has been adapted to meet unique customer requirements in a variety of nuclear power plants.

  11. Strategies for Optimal MAC Parameters Tuning in IEEE 802.15.6 Wearable Wireless Sensor Networks.

    Science.gov (United States)

    Alam, Muhammad Mahtab; Ben Hamida, Elyes

    2015-09-01

    Wireless body area networks (WBAN) has penetrated immensely in revolutionizing the classical heath-care system. Recently, number of WBAN applications has emerged which introduce potential limits to existing solutions. In particular, IEEE 802.15.6 standard has provided great flexibility, provisions and capabilities to deal emerging applications. In this paper, we investigate the application-specific throughput analysis by fine-tuning the physical (PHY) and medium access control (MAC) parameters of the IEEE 802.15.6 standard. Based on PHY characterizations in narrow band, at the MAC layer, carrier sense multiple access collision avoidance (CSMA/CA) and scheduled access protocols are extensively analyzed. It is concluded that, IEEE 802.15.6 standard can satisfy most of the WBANs applications throughput requirements by maximum achieving 680 Kbps. However, those emerging applications which require high quality audio or video transmissions, standard is not able to meet their constraints. Moreover, delay, energy efficiency and successful packet reception are considered as key performance metrics for comparing the MAC protocols. CSMA/CA protocol provides the best results to meet the delay constraints of medical and non-medical WBAN applications. Whereas, the scheduled access approach, performs very well both in energy efficiency and packet reception ratio.

  12. Interoperability in digital electrocardiography: harmonization of ISO/IEEE x73-PHD and SCP-ECG.

    Science.gov (United States)

    Trigo, Jesús D; Chiarugi, Franco; Alesanco, Alvaro; Martínez-Espronceda, Miguel; Serrano, Luis; Chronaki, Catherine E; Escayola, Javier; Martínez, Ignacio; García, José

    2010-11-01

    The ISO/IEEE 11073 (x73) family of standards is a reference frame for medical device interoperability. A draft for an ECG device specialization (ISO/IEEE 11073-10406-d02) has already been presented to the Personal Health Device (PHD) Working Group, and the Standard Communications Protocol for Computer-Assisted ElectroCardioGraphy (SCP-ECG) Standard for short-term diagnostic ECGs (EN1064:2005+A1:2007) has recently been approved as part of the x73 family (ISO 11073-91064:2009). These factors suggest the coordinated use of these two standards in foreseeable telecardiology environments, and hence the need to harmonize them. Such harmonization is the subject of this paper. Thus, a mapping of the mandatory attributes defined in the second draft of the ISO/IEEE 11073-10406-d02 and the minimum SCP-ECG fields is presented, and various other capabilities of the SCP-ECG Standard (such as the messaging part) are also analyzed from an x73-PHD point of view. As a result, this paper addresses and analyzes the implications of some inconsistencies in the coordinated use of these two standards. Finally, a proof-of-concept implementation of the draft x73-PHD ECG device specialization is presented, along with the conversion from x73-PHD to SCP-ECG. This paper, therefore, provides recommendations for future implementations of telecardiology systems that are compliant with both x73-PHD and SCP-ECG.

  13. On IEEE 802.15.6 IR-UWB receivers - simulations for DBPSK modulation.

    Science.gov (United States)

    Niemelä, Ville; Hämäläinen, Matti; Iinatti, Jari

    2013-01-01

    In 2002, Federal Communications Commission (FCC) was the first in defining regulations for ultra wideband (UWB) communications followed by Europe and Japan some years later. Focusing on impulse radio (IR) UWB, in 2007 was the time for the first published standard targeting in personal area networks, released by the IEEE. The second IEEE released standard including UWB definitions is targeted for wireless body area networks (WBAN) and was published in 2012. As the wireless communications has been and will be passing through almost any levels in society, the natural step with WBAN is using it in different medical, healthcare and wellbeing applications. The arguments for these are related to the modern lifestyle, in which people have increasingly more free time and are more interested in taking care of their health and wellbeing. Another challenge is the population composition, i.e., aging in developed countries which call for new solutions and procedures, particularly from cost wise. In this paper, we are evaluating UWB receivers based on the IEEE 802.15.6 physical layer definitions and capable of detecting differentially encoded modulation. The evaluation is performed using two different WBAN channel models.

  14. Segmentized Clear Channel Assessment for IEEE 802.15.4 Networks.

    Science.gov (United States)

    Son, Kyou Jung; Hong, Sung Hyeuck; Moon, Seong-Pil; Chang, Tae Gyu; Cho, Hanjin

    2016-06-03

    This paper proposed segmentized clear channel assessment (CCA) which increases the performance of IEEE 802.15.4 networks by improving carrier sense multiple access with collision avoidance (CSMA/CA). Improving CSMA/CA is important because the low-power consumption feature and throughput performance of IEEE 802.15.4 are greatly affected by CSMA/CA behavior. To improve the performance of CSMA/CA, this paper focused on increasing the chance to transmit a packet by assessing precise channel status. The previous method used in CCA, which is employed by CSMA/CA, assesses the channel by measuring the energy level of the channel. However, this method shows limited channel assessing behavior, which comes from simple threshold dependent channel busy evaluation. The proposed method solves this limited channel decision problem by dividing CCA into two groups. Two groups of CCA compare their energy levels to get precise channel status. To evaluate the performance of the segmentized CCA method, a Markov chain model has been developed. The validation of analytic results is confirmed by comparing them with simulation results. Additionally, simulation results show the proposed method is improving a maximum 8.76% of throughput and decreasing a maximum 3.9% of the average number of CCAs per packet transmission than the IEEE 802.15.4 CCA method.

  15. Study on additional carrier sensing for IEEE 802.15.4 wireless sensor networks.

    Science.gov (United States)

    Lee, Bih-Hwang; Lai, Ruei-Lung; Wu, Huai-Kuei; Wong, Chi-Ming

    2010-01-01

    Wireless sensor networks based on the IEEE 802.15.4 standard are able to achieve low-power transmissions in the guise of low-rate and short-distance wireless personal area networks (WPANs). The slotted carrier sense multiple access with collision avoidance (CSMA/CA) is used for contention mechanism. Sensor nodes perform a backoff process as soon as the clear channel assessment (CCA) detects a busy channel. In doing so they may neglect the implicit information of the failed CCA detection and further cause the redundant sensing. The blind backoff process in the slotted CSMA/CA will cause lower channel utilization. This paper proposes an additional carrier sensing (ACS) algorithm based on IEEE 802.15.4 to enhance the carrier sensing mechanism for the original slotted CSMA/CA. An analytical Markov chain model is developed to evaluate the performance of the ACS algorithm. Both analytical and simulation results show that the proposed algorithm performs better than IEEE 802.15.4, which in turn significantly improves throughput, average medium access control (MAC) delay and power consumption of CCA detection.

  16. Performance Analysis of Proposed Congestion Avoiding Protocol for IEEE 802.11s

    Directory of Open Access Journals (Sweden)

    Kishwer Abdul Khaliq

    2017-02-01

    Full Text Available The wireless technology is one of the core compo-nents of mobile applications with mobility support at low deploy-ment costs. Among these, Wireless Mesh Network (WMN is one of the technologies that supports mobile users for un-disrupted, reliable data connectivity, provides high bandwidth even in areas, where access of such services is difficult. Additionally, it features capabilities like self-configuring, self-healing, and self-organizing. IEEE proposed a MAC standard for WMN enhancements named IEEE 802.11s for multi-hop networks. Within this standard, the mandatory routing protocol called Hybrid Wireless Mesh Protocol (HWMP is proposed for efficient utilization of resources to achieve high bandwidth at MAC layer. To improve this protocol, a congestion avoiding protocol was proposed, which utilizes alternate paths just before the congestion state is reached. The proposed technique does not add any overhead, it utilizes congestion notification frame, which is already part of standard. This paper discusses simulation results of the proposed routing protocol against the existing HWMP protocol for packet delivery fraction, throughput and delay. The results indicate that the proposed technique significantly improves performance of IEEE 802.11s.

  17. Spectrum Hole Identification in IEEE 802.22 WRAN using Unsupervised Learning

    Directory of Open Access Journals (Sweden)

    V. Balaji

    2016-01-01

    Full Text Available In this paper we present a Cooperative Spectrum Sensing (CSS algorithm for Cognitive Radios (CR based on IEEE 802.22Wireless Regional Area Network (WRAN standard. The core objective is to improve cooperative sensing efficiency which specifies how fast a decision can be reached in each round of cooperation (iteration to sense an appropriate number of channels/bands (i.e. 86 channels of 7MHz bandwidth as per IEEE 802.22 within a time constraint (channel sensing time. To meet this objective, we have developed CSS algorithm using unsupervised K-means clustering classification approach. The received energy level of each Secondary User (SU is considered as the parameter for determining channel availability. The performance of proposed algorithm is quantified in terms of detection accuracy, training and classification delay time. Further, the detection accuracy of our proposed scheme meets the requirement of IEEE 802.22 WRAN with the target probability of falsealrm as 0.1. All the simulations are carried out using Matlab tool.

  18. Study on Additional Carrier Sensing for IEEE 802.15.4 Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Bih-Hwang Lee

    2010-06-01

    Full Text Available Wireless sensor networks based on the IEEE 802.15.4 standard are able to achieve low-power transmissions in the guise of low-rate and short-distance wireless personal area networks (WPANs. The slotted carrier sense multiple access with collision avoidance (CSMA/CA is used for contention mechanism. Sensor nodes perform a backoff process as soon as the clear channel assessment (CCA detects a busy channel. In doing so they may neglect the implicit information of the failed CCA detection and further cause the redundant sensing. The blind backoff process in the slotted CSMA/CA will cause lower channel utilization. This paper proposes an additional carrier sensing (ACS algorithm based on IEEE 802.15.4 to enhance the carrier sensing mechanism for the original slotted CSMA/CA. An analytical Markov chain model is developed to evaluate the performance of the ACS algorithm. Both analytical and simulation results show that the proposed algorithm performs better than IEEE 802.15.4, which in turn significantly improves throughput, average medium access control (MAC delay and power consumption of CCA detection.

  19. Experimental study of IEEE 802.15.4 anti-interference ability to WLAN%IEEE802.15.4对WLAN抗干扰性能的实验研究

    Institute of Scientific and Technical Information of China (English)

    王赟; 乐燕芬; 施伟斌

    2012-01-01

    针对2.4 GHz频段内的IEEE 802.15.4,研究其与无线局域网共存时的抗干扰性.实验设定了多种场景并测试了实际应用环境中IEEE 802.15.4的通信质量.实验数据表明,WLAN干扰可使IEEE 802.15.4数据丢包率高达94%.通过实验数据分析得到了IEEE 802.15.4通信节点丢包率与WLAN信道、节点发送功率以及RSSI的相关性,为研究WSN的同频抗干扰技术提供了有价值的实验依据.%An experimental study of IEEE 802.15.4 anti-interference ability when it is coexistent with Wireless Local Area Networks in 2.4 GHz band is carried out. Communication quality of IEEE 802.15.4 is tested in a variety of scenarios and in practical application environment. Packet loss rate of IEEE 802.15.4 reaches as high as 94% due to the interference of WLAN as showed by the experimental data. This paper analyses correlation of packet loss rate of IEEE 802.15.4 communication nodes with WLAN channel, output power of nodes and RSSI and it provides a valuable experimental basis for the study of frequency anti-interference of WSN technology.

  20. Network performance study for mobile node in IEEE 802.15.4%移动节点在IEEE 802.15.4中网络性能的研究

    Institute of Scientific and Technical Information of China (English)

    张宇; 黄刘生

    2007-01-01

    研究并分析了IEEE 802.15.4协议在移动环境下的性能,仿真并分析了IEEE 802.15.4的Beacon和非Beacon两种不同的网络拓扑对移动节点的支持程度,针对存在的问题,提出了进一步改进的意见.

  1. Proceedings of the Second International Workshop on Domain-Specific Languages and Models for Robotic Systems (DSLRob 2011)

    DEFF Research Database (Denmark)

    Schultz, Ulrik Pagh; Stinckwich, Serge

    that domain. Models offer a high-level way for domain users to specify the functionality of their system at the right level of abstraction. DSLs and models have historically been used for programming complex systems. However recently they have garnered interest as a separate field of study. Robotic systems......Proceedings of the Second International Workshop on Domain-Specific Languages and Models for Robotic Systems (DSLRob'11), held in conjunction with the 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2011), September 2011 in San Francisco, USA. The main topics...... of the workshop were Domain-Specific Languages (DSLs) and Model-driven Software Development (MDSD) for robotics. A domain-specific language (DSL) is a programming language dedicated to a particular problem domain that offers specific notations and abstractions that increase programmer productivity within...

  2. IEEE 1451网络化智能传感器标准的发展及应用探讨%Study of Development and Application of IEEE 1451 Standards for Networked Smart Sensors

    Institute of Scientific and Technical Information of China (English)

    童利标; 徐科军; 梅涛

    2002-01-01

    IEEE 1451标准由IEEE 1451.1、1451.2、P1451.3和P1451.4组成.它定义了一套连接传感器到网络的标准化通用接口,建立了网络化智能传感器的框架,这使得传感器制造商有能力支持多种网络.然而,IEEE1451标准在应用中存在着一些困难.本文简要介绍IEEE 1451标准的内容和发展过程,分析限制该标准应用的一些原因,讨论IEEE1451.x标准之间的关系,给出一个用于机器人手爪的基于IEEE1451.1标准的网络化智能传感器的例子.

  3. 基于IEEE802.11n的无线局域网关键技术研究%Research on Key Technologies of Wireless Local Area Network IEEE802.11n

    Institute of Scientific and Technical Information of China (English)

    伍转华

    2012-01-01

      This paper first introduces several high speed physical layer specifications in the IEEE 802.11 series standards, and makes a brief analysis. Furthermore focuses on the research of the main standard IEEE802.11n from the two aspects of physical layer and media access control layer. It has elaborately analyzed the channel access method of IEEE802.11n and key technologies of physical layer and media access control layer in system throughput.%  文中首先介绍了IEEE 802.11系列标准中的几种高速物理层标准,并进行了简要的分析.接着分别从无线局域网PHY层和MAC层两个层面,重点研究了目前无线局域网领域的主流标准IEEE 802.11n.细致的分析了IEEE 802.11n的信道接入方式以及与系统吞吐量相关的MAC层和PHY层关键技术.

  4. Implementation of DoS attack and mitigation strategies in IEEE 802.11b/g WLAN

    Science.gov (United States)

    Deng, Julia; Meng, Ke; Xiao, Yang; Xu, Roger

    2010-04-01

    IEEE 802.11 wireless Local Area Network (WLAN) becomes very prevalent nowadays. Either as a simple range extender for a home wired Ethernet interface, or as a wireless deployment throughout an enterprise, WLAN provides mobility, convenience, and low cost. However, an IEEE 802.11b/g wireless network uses the frequency of unlicensed 2.4GHz, which makes the network unsafe and more vulnerable than traditional Ethernet networks. As a result, anyone who is familiar with wireless network may initiate a Denial of Service (DoS) attack to influence the common communication of the network or even make it crash. In this paper, we present our studies on the DoS attacks and mitigation strategies for IEEE 802.11b/g WLANs and describe some initial implementations using IEEE 802.11b/g wireless devices.

  5. Empirical Performance Evaluation of Enhanced Throughput Schemes of IEEE802.11 Technology in Wireless Area Networks

    Directory of Open Access Journals (Sweden)

    Femi-Jemilohun Oladunni.Juliet

    2013-08-01

    Full Text Available The success in the growing wireless standards can be measured by the achievement of quality of service(QoS specifications by the designers. The IEEE802.11 wireless standards are widely accepted as wirelesstechnology for wireless LAN. Efforts have been made over the years by the task group to provide adequatenumber of QoS enhancement schemes for the increasing numbers of multimedia applications. This paperexamines the empirical performances of ad hoc wireless networks deployed on IEEE802.11 standardvariants. A survey to some of the QoS schemes incorporated in IEEE802.11 wireless PHY layers werecarried out. Then the effects of this enhancement schemes in relation to data throughput and systemcapacity and reliability in the newest technology deployed on IEEE802.11ac standards was investigatedusing real time applications and simulation based approaches.

  6. NIH-IEEE 2015 Strategic Conference on Healthcare Innovations and Point-of-Care Technologies for Prec

    Science.gov (United States)

    NIH and the Institute for Electrical and Electronics Engineering, Engineering in Medicine and Biology Society (IEEE/EMBS) hosted the third iteration of the Healthcare Innovations and Point-of-Care Technologies Conference last week.

  7. IEEE 1394事务层接口的设计与实现%Design and implementation of IEEE 1394 transaction layer interface

    Institute of Scientific and Technical Information of China (English)

    王佩; 徐进; 张爱林

    2014-01-01

    本文设计的IEEE 1394事物层接口连接了PLB (Processor Local Bus )总线和1394链路层模块,主要实现1394事物层模块数据的发送和接收。首先对事物层接口进行系统结构设计,然后对PLB从接口、FIFO接口和主机访问寄存器接口这3个子模块分别进行逻辑设计,最后采用硬件描述语言对设计进行可综合描述,并使用软件 QuestaSim进行仿真验证。该设计使事务层能够跨时钟域同链路层进行数据包的传输,并进行有效的数据位宽转换,提高传输效率。经过仿真验证,结果满足设计要求,表明IEEE 1394事物层接口能够正常发送和接收等时及异步数据包。%T he design of the IEEE 1394 transaction layer interface connecting the PLB (Processor Local Bus) with the 1394 link layer module ,mainly aims to send and receive 1394 transaction layer module′s data .Firstly ,the system structure of transaction layer interface is designed ,and then the three sub -modules ,including PLB slave interface ,FIFO interface and host interface to access the registers are de‐signed .Finally the hardware description language is used to describe this design ,and the software QuestaSim is used to simulate and verify the result .This design of the transaction layer can transmit da‐ta packet with the link layer across the clock domain ,switch data width effectively and improve the transmission efficiency .The simulation results meet the design requirements and show that the transac‐tion layer can be capable of sending and receiving isochronous and asynchronous data correctly .

  8. 7 CFR 51.2296 - Three-fourths half kernel.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Three-fourths half kernel. 51.2296 Section 51.2296 Agriculture Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards...-fourths half kernel. Three-fourths half kernel means a portion of a half of a kernel which has more...

  9. Implementation of IEEE-1588 timing and synchronization for ATCA control and data acquisition systems

    Energy Technology Data Exchange (ETDEWEB)

    Correia, Miguel, E-mail: miguelfc@lei.fis.uc.pt [Associacao EURATOM/IST, Instituto de Plasmas e Fusao Nuclear-Laboratorio Associado, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Lisboa (Portugal); Sousa, Jorge; Combo, Alvaro; Rodrigues, Antonio P.; Carvalho, Bernardo B.; Batista, Antonio J.N.; Goncalves, Bruno [Associacao EURATOM/IST, Instituto de Plasmas e Fusao Nuclear-Laboratorio Associado, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Lisboa (Portugal); Correia, Carlos M.B.A. [Grupo de Electronica e Instrumentacao do Centro de Instrumentacao, Dept. de Fisica, Universidade de Coimbra, Coimbra (Portugal); Varandas, Carlos A.F. [Associacao EURATOM/IST, Instituto de Plasmas e Fusao Nuclear-Laboratorio Associado, Instituto Superior Tecnico, Universidade Tecnica de Lisboa, Lisboa (Portugal)

    2012-12-15

    Highlights: Black-Right-Pointing-Pointer IEEE-1588 over Ethernet protocol is implemented for the synchronization of all clock signals of an ATCA AMC carrier module. Black-Right-Pointing-Pointer The ATCA hardware consists of an AMC quad-carrier main-board with PCI Express switching. Black-Right-Pointing-Pointer IEEE-1588 is to be implemented on a Virtex-6 FPGA. Black-Right-Pointing-Pointer Timing signals on the ATX-AMC4-PTP are managed and routed by a crosspoint-switch implemented on a Virtex-6 FPGA. Black-Right-Pointing-Pointer Each clock signal source may be independently located (on each of the AMC cards, RTM or ATCA backplane). - Abstract: Control and data acquisition (C and DA) systems for Fusion experiments are required to provide accurate timing and synchronization (T and S) signals to all of its components. IPFN adopted PICMG's Advanced Telecommunications Computing Architecture (ATCA) industry standard to develop C and DA instrumentation. ATCA was chosen not only for its high throughput characteristics but also for its high availability (HA) features which become of greater importance in steady-state operation scenarios. However, the specified ATCA clock and synchronization interface may be too limited for the timing and synchronization needs in advanced Physics experiments. Upcoming specification extensions, developed by the 'xTCA for Physics' workgroups, will contemplate, among others, a complementary timing specification, developed by the PICMG xTCA for Physics IO, Timing and Synchronization Technical Committee. The IEEE-1588 Precision Time Protocol (PTP) over Ethernet is one of the protocols, proposed by the Committee, aiming for precise synchronization of clocks in measurement and control systems, based on low jitter and slave-to-slave skew criteria. The paper presents an implementation of IEEE-1588 over Ethernet, in an ATCA hardware platform. The ATCA hardware consists of an Advanced Mezzanine Card (AMC) quad-carrier front board with PCI

  10. IEEE 802.15.4 transceiver for the 868/915 MHz band using Software Defined Radio

    OpenAIRE

    Zitouni, Rafik; Ataman, Stefan; Mathian, Marie; George, Laurent

    2013-01-01

    This paper reports an implementation of the PHY specifications of the IEEE 802.15.4 standard for the frequency band 868 915 MHz on a Software Defined Radio (SDR) platform. This standard is defined for low power, low data rate and low cost wireless networks. These specifications are used by the Zigbee technology for various applications such as home automation, industry monitoring or medical surveillance. Several hardware PHY 868/915 MHz band IEEE 802.15.4 transceiver implementations have been...

  11. Empirical Performance Evaluation of Enhanced Throughput Schemes of IEEE802.11 Technology in Wireless Area Networks

    OpenAIRE

    2013-01-01

    The success in the growing wireless standards can be measured by the achievement of quality of service (QoS) specifications by the designers. The IEEE802.11 wireless standards are widely accepted as wireless technology for wireless LAN. Efforts have been made over the years by the task group to provide adequate number of QoS enhancement schemes for the increasing numbers of multimedia applications. This paper examines the empirical performances of ad hoc wireless networks deployed on IEEE802....

  12. Photonics Explorer Workshop

    Science.gov (United States)

    Prasad, Amrita; Debaes, Nathalie

    2014-07-01

    The Photonics Explorer is an intra-curricular educational kit developed in a European project with a pan-European collaboration of over 35 teachers and science education professors. Unlike conventional educational outreach kits, the Photonics Explorer is specifically designed to integrate seamlessly in school curricula and enhance and complement the teaching and learning of science and optics in the classroom. The kit equips teachers with class sets of experimental components, provided within a supporting didactic framework and is designed for lower and upper secondary students (12-18 years). The kit is provided completely free of charge to teachers in conjunction with teacher training courses. The workshop will provide an overview of the Photonics Explorer intra-curricular kit and give teachers the opportunity to work hands-on with the material and didactic content of two modules, `Light Signals' (lower secondary) and `Diffraction and Interference'(upper secondary). We also aim to receive feedback regarding the content, components and didactic framework from teachers from non- European countries, to understand the relevance of the kit for their teaching and the ability for such a kit to integrate into non-EU curricula.

  13. Geomagnetic Workshop, Canberra

    Science.gov (United States)

    Barton, C. E.; Lilley, F. E. M.; Milligan, P. R.

    On May 14-15, 1985, 63 discerning geomagnetists flocked to Canberra to attend the Geomagnetic Workshop coorganized by the Australian Bureau of Mineral Resources (BMR) and the Research School of Earth Sciences, Australian National University (ANU). With an aurorally glowing cast that included an International Association of Geomagnetism and Aeronomy (IAGA) president, former president, and division chairman, the Oriental Magneto-Banquet (which was the center of the meeting), was assured of success. As a cunning ploy to mask the true nature of this gastronomic extravagance from the probings of income tax departments, a presentation of scientific papers on Australian geomagnetism in its global setting was arranged.The Australian region, including New Zealand, Papua New Guinea, Indonesia, and a large sector of the Antarctic, covers one eighth of the Earth's surface and historically has played an important role in the study of geomagnetism. The region contains both the south magnetic and geomagnetic poles, and two Australian Antarctic stations (Casey and Davis) are situated in the region of the south polar cusp (see Figure 1).

  14. VLLEEM-2 technical workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    In order to overcome the limits of the energy-environment models, and to benefit at the same time of their past experiences, the VLEEM project proposes a genuine approach and innovative modelling tools to assess the energy-environment systems over the very long term, which are based on the strengths of existing long term energy models, but focussed on two major objectives: to describe normative futures which fit with a set of overall constraints, like the stabilisation of the concentration of green-house gases in the atmosphere, or the stabilisation of the overall inventory of plutonium and minor actinides, etc...; to describe and formalize the association of causalities necessary to bring the system from the present situation to the targeted future, through a '' back-casting '' approach. This first technical workshop presents the state of the art of the different Work Programmes. WP1:Enhancement of the Conceptual framework. WP2: Data base on conventional demand/supply technologies. WP3: Complement and up-date technology monographs. WP4: Formalization and computing of final VLEEM submodels. WP5: Case study 2030, 2050, 2100. (A.L.B.)

  15. Fourth Generation Leptons and Muon $g-2$

    CERN Document Server

    Hou, Wei-Shu; Ma, Chien-Yi

    2008-01-01

    We consider the contributions to $g_\\mu-2$ from fourth generation neutral and charged leptons, $N$ and $E$, at the one-loop level. Diagramatically, there are two types of contributions: boson-boson-$N$, and $E$-$E$-boson in the loop diagram. In general, the effect from $N$ is suppressed by off-diagonal PMNS matrix element $V_{N\\mu}$, from the Standard Model to the Two-Higgs Doublet Models. With contribution from $E$, we consider flavor changing neutral couplings.

  16. Geometry, relativity and the fourth dimension

    CERN Document Server

    Rucker, Rudolf

    1977-01-01

    This is a highly readable, popular exposition of the fourth dimension and the structure of the universe. A remarkable pictorial discussion of the curved space-time we call home, it achieves even greater impact through the use of 141 excellent illustrations. This is the first sustained visual account of many important topics in relativity theory that up till now have only been treated separately.Finding a perfect analogy in the situation of the geometrical characters in Flatland, Professor Rucker continues the adventures of the two-dimensional world visited by a three-dimensional being to expl

  17. Fourth international seminar on horizontal steam generators

    Energy Technology Data Exchange (ETDEWEB)

    Tuomisto, H. [ed.] [IVO Group, Vantaa (Finland); Purhonen, H. [ed.] [VTT, Espoo (Finland); Kouhia, V. [ed.] [Lappeenranta Univ. of Technology (Finland)

    1997-12-31

    The general objective of the International Seminars of Horizontal Steam Generator Modelling has been the improvement in understanding of realistic thermal hydraulic behaviour of the generators when performing safety analyses for VVER reactors. The main topics presented in the fourth seminar were: thermal hydraulic experiments and analyses, primary collector integrity, feedwater distributor replacement, management of primary-to-secondary leakage accidents and new developments in the VVER safety technology. The number of participants, representing designers and manufacturers of the horizontal steam generators, plant operators, engineering companies, research organizations, universities and regulatory authorities, was 70 from 10 countries.

  18. IEEE 802.16e标准中LDPC编码的实现与仿真%The implementation and simulation of IEEE 802.16e LDPC coding

    Institute of Scientific and Technical Information of China (English)

    宁平

    2014-01-01

    根据IEEE802.16e标准中LDPC编码的定义,提出了一种利用高速状态机来实现编码的快速算法.在Quartus Ⅱ下使用Verilog HDL实现了该算法并进行了时序仿真.仿真结果表明,设计具有良好的实时性,克服了以往设计中预处理复杂、消耗逻辑资源多的缺点.最后利用MATLAB对该设计与DVB-S2缩短码的BER性能进行了比较,分析了制约DVB-S2缩短码性能的因素.

  19. IEEE Transactions on Engineering Management的发展历程及研究热点%Development History and Research Focus of IEEE Transactions on Engineering Management

    Institute of Scientific and Technical Information of China (English)

    陈悦; 李瑛

    2011-01-01

    利用知识计量学与知识图谱的方法技术,以SSCI数据库的论文为基础,对美国创新管理期刊IEEE Transactions on Engineering Management发展历程及其研究热点进行计量研究。通过对该期刊三个时间段知识群文献的分析,可看出该刊从侧重于技术管理的定量工具方法,到侧重于产品开发、项目管理与技术转移,再到侧重于组织、战略及政策管理的大致发展脉络。其当前创新管理研究热点,主要围绕“绩效”、“创新”、“管理”、“产品开发”、“系统”和“战略”展开。%Based on registed articles in SSCI, the paper took a metric research on the development history and research focus of ' IEEE Transactions on Engineering Management' by the means of scientometrics and knowledge mapping. The major aspects were the articles analysis in knowledge group of three different periods. The research focus change can be concluded : first, focus on the quantitative tools and methods of technical management; and then turn to product development, project management and technology transfer; at last focus on organization, strategy and policy management. Current innovation management research mainly focuses on the following aspects : performance, innovation, management, product development, system, strategy etc.

  20. 基于IEEE Std 1500标准的SOC可测性设计研究%Research of DFT of SOC based on IEEE Std 1500

    Institute of Scientific and Technical Information of China (English)

    周银; 周浔; 陈圣俭; 王月芳

    2012-01-01

    he technology of IP core based on SOC design is widely used, which is attribute to the rapid development of deep submicron meter manufacture technology and design technology of integrated circuit. Because of the fact that IP cores usually come from different providers and the incompatibility of interface between IP core providers and core users and aims at improving ease of test reuse and test integration with respect to the core based SOC. 1500 standard for embedded core test is presented to solve this problem. The detail includes the test architecture, usage of this standard and core test description language.%集成电路深亚微米制造技术和设计技术的迅速发展,使得基于IP核复用的SOC设计技术得到越来越广泛的应用,但由于IP核的来源不同,设计标准的不兼容等因素,使得SOC的测试变得越来越困难;IEEE为解决SOC的测试问题提出了嵌入式芯核测试标准IEEE Std 1500,致力于建立标准化的IP核供应商和用户之间的测试接口,简化核测试信息的复用;文章详细介绍了IEEE Std 1500标准的测试架构,使用方法和核测试描述语言CTL,同时给出标准中提出的SOC可测性设计方法.