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Sample records for twenty-first ieee conference

  1. NASA/IEEE MSST 2004 Twelfth NASA Goddard Conference on Mass Storage Systems and Technologies in cooperation with the Twenty-First IEEE Conference on Mass Storage Systems and Technologies

    Science.gov (United States)

    Kobler, Ben (Editor); Hariharan, P. C. (Editor)

    2004-01-01

    MSST2004, the Twelfth NASA Goddard / Twenty-first IEEE Conference on Mass Storage Systems and Technologies has as its focus long-term stewardship of globally-distributed storage. The increasing prevalence of e-anything brought about by widespread use of applications based, among others, on the World Wide Web, has contributed to rapid growth of online data holdings. A study released by the School of Information Management and Systems at the University of California, Berkeley, estimates that over 5 exabytes of data was created in 2002. Almost 99 percent of this information originally appeared on magnetic media. The theme for MSST2004 is therefore both timely and appropriate. There have been many discussions about rapid technological obsolescence, incompatible formats and inadequate attention to the permanent preservation of knowledge committed to digital storage. Tutorial sessions at MSST2004 detail some of these concerns, and steps being taken to alleviate them. Over 30 papers deal with topics as diverse as performance, file systems, and stewardship and preservation. A number of short papers, extemporaneous presentations, and works in progress will detail current and relevant research on the MSST2004 theme.

  2. 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…

  3. 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…

  4. New electricity 21: designing a sustainable electric system for the twenty-first century. Conference proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-11-01

    A total of 125 papers were presented at the conference in six sessions with the following headings: opportunities to increase electricity use for sustainable development; electric system expansion and integration to meet growing competition; power producers and global climate change issues; technology for supplying electricity in developing and transition economies; and power industry structures, regulatory policies and technological innovation. Thirty of the papers have been abstracted separately for the IEA Coal Research CD-ROM.

  5. Proceedings of the twenty-first DOE solar photochemistry research conference

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-06-01

    The Solar Photochemistry Research Conference brings together grantees and contractors of the Division of Chemical Sciences who are engaged in fundamental research on solar photochemical energy conversion. The annual conference provides a focus for the program by allowing for the exchange of new information and ideas, identification of needs and opportunities, and fostering of collaborations among investigators of disparate chemistry backgrounds. The synergy that has been achieved is a major strength of the program. The research provides the foundations for future solar technologies, in which light-induced charge separation processes will be applied to conversion of light energy to chemical energy, e.g., production of alcohols from carbon dioxide, hydrogen from water, ammonia from atmospheric nitrogen, or other needed chemicals at lower cost of by using sunlight as the energy source. The program includes topical sessions on semiconductor nanoparticles, nanocrystalline films, and photoinduced charge separation at the semiconductor/liquid interface; photochemistry and photophysics of transition metal complexes; photoinduced charge separation in zeolites and lamellar assemblies; intramolecular charge separation and electron transfer; dynamics of solvation and solution interfaces; and photoconversion via porphyrins and biomimetic constructs. The special guest plenary lecturer is Professor Moungi Bawendi of the Massachusetts Institute of Technology, who spoke on semiconductor nanocrystallites (quantum dots). As an added feature, Tom Surek, the Photovoltaics Technology program manager at NREL, presented a status report on one of the most promising and heavily supported programs in solar energy conversion technology, solid state photovoltaics. This volume contains the agenda for the meeting, abstracts of the 31 formal presentations and 55 posters, as well as an address list for the 111 participants.

  6. 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.  

  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. 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.    

  9. 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

  10. Addressing the main challenges of energy security in the twenty-first century – Contributions of the conferences on Sustainable Development of Energy, Water and Environment Systems

    DEFF Research Database (Denmark)

    Markovska, Natasa; Duić, Neven; Mathiesen, Brian Vad

    2016-01-01

    biorefineries. Presenting the contributions of selected conference papers published in the special issues of leading scientific journals (including all the papers from the current Energy special issue), this review demonstrates the capacity of the Conferences on Sustainable Development of Energy, Water...... energy systems based on variable renewables; Electrifying the transport and some industrial processes; Liberalizing and extending the energy markets; Integrating energy sectors to Smart Energy Systems; Making the cities and communities smart; Diversifying the energy sources; and Building more......Climate change and fossil fuel reserve depletion both pose challenges for energy security and for wellbeing in general. The top ten among them include: Decarbonising the world economy; Enhancing the energy efficiency and energy savings in buildings; Advancing the energy technologies; Moving towards...

  11. CSP-IEEE Instrumentation and Measurement Technology Conference 2016 (IEEE 12MTC 2016)

    Science.gov (United States)

    2016-08-22

    and Malaysia . Travelling expense and accommodation cost of the conference venue are two major concerns which cause some regular attendees from Brazil...the Conference is in Asia , therefore China , Taiwan , Malaysia , and India were on the list. As for the acceptance rat ion , Austria , Italy, UK...15 69.4% Brazil 14 7 66.7% USA 15 6 71.4% Malaysia 12 10 54 .5% Germany 9 3 75.0% United Kingdom 10 2 83 .3% Canada 8 2 80.0% Austria 10 0

  12. Twenty-first century vaccines

    Science.gov (United States)

    Rappuoli, Rino

    2011-01-01

    In the twentieth century, vaccination has been possibly the greatest revolution in health. Together with hygiene and antibiotics, vaccination led to the elimination of many childhood infectious diseases and contributed to the increase in disability-free life expectancy that in Western societies rose from 50 to 78–85 years (Crimmins, E. M. & Finch, C. E. 2006 Proc. Natl Acad. Sci. USA 103, 498–503; Kirkwood, T. B. 2008 Nat. Med 10, 1177–1185). In the twenty-first century, vaccination will be expected to eliminate the remaining childhood infectious diseases, such as meningococcal meningitis, respiratory syncytial virus, group A streptococcus, and will address the health challenges of this century such as those associated with ageing, antibiotic resistance, emerging infectious diseases and poverty. However, for this to happen, we need to increase the public trust in vaccination so that vaccines can be perceived as the best insurance against most diseases across all ages. PMID:21893537

  13. 20th IEEE-NPSS Real Time Conference

    CERN Document Server

    2016-01-01

    We invite you at the Centro Congressi “A. Luciani” in Padova for the 2016 Real Time Conference (RT2016). It will take place Monday 6 through Friday 10 June 2016, with optional pre-conference tutorials Sunday, June 5. Like the previous editions, RT2016 will be a multidisciplinary conference devoted to the latest developments on realtime techniques in the fields of Plasma and Nuclear Fusion, particle physics, nuclear physics and astrophysics, space science, accelerators, medical physics, nuclear power instrumentation and other radiation instrumentation.

  14. 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.

  15. 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.

  16. 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.

  17. 1999 IEEE international conference on robotics and automation

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    Topics covered in this conference include: biped robots; underwater vehicles; robot planning and programming for assembly; discrete event control of mobile robot maneuvering; navigation in unknown environment; biped robots; underwater vehicles; robot planning and programming for assembly; discrete event control of manufacturing systems; motion planning; robot control; actuator; teleoperation; force and position control; contact and grasping control; visual servo control; tactile sensing; mobile robots and applications; sensor-based navigation; underwater robotics; sensing, navigation and control; flexible manipulators; task scheduling; actuators and joint actuation; teleoperation; sensor-based teleoperation; contact geometry; sonar-based sensing; mobile robot-environment interaction; mobile robot motion planning; biology-inspired methods; service and underwater robots; manufacturing planning and scheduling; constraint and nonholonomic system; fault-tolerant robots; parallel manipulators; dexterous manipulation; computer vision in manufacturing; contact sensing; mobile robot field applications; flexible robots; fuzzy control; and more.

  18. 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.

  19. 4th IEEE/ACIS International Conference on Computer and Information Science

    CERN Document Server

    2016-01-01

    This edited book presents scientific results of the 14th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2015) which was held on June 28 – July 1, 2015 in Las Vegas, USA. The aim of this conference was to bring together researchers and scientists, businessmen and entrepreneurs, teachers, engineers, computer users, and students to discuss the numerous fields of computer science and to share their experiences and exchange new ideas and information in a meaningful way. Research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them.

  20. 3th IEEE/ACIS International Conference on Computer and Information Science

    CERN Document Server

    2015-01-01

    This edited book presents scientific results of the 13th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2014) which was held on June 4-6, 2014 in Taiyuan, China. The aim of this conference was to bring together researchers and scientists, businessmen and entrepreneurs, teachers, engineers, computer users, and students to discuss the numerous fields of computer science and to share their experiences and exchange new ideas and information in a meaningful way. Research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them. The conference organizers selected the best papers from those papers accepted for presentation at the conference.  The papers were chosen based on review scores submitted by members of the program committee, and underwent further rigorous rounds of review. This publication captures 14 of the conference’s most promis...

  1. 12th ACIS/IEEE International Conference on Computer Science and Information Science

    CERN Document Server

    2013-01-01

    This edited book presents scientific results of the 12th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2013) which was held on June 16-20, 2013 in Toki Messe, Niigata, Japan. The aim of this conference was to bring together scientists, engineers, computer users, and students to share their experiences and exchange new ideas, research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them The conference organizers selected the best 20 papers from those papers accepted for presentation at the conference. The papers were chosen based on review scores submitted by members of the program committee, and underwent further rigorous rounds of review.    

  2. Capital in the Twenty-First Century

    DEFF Research Database (Denmark)

    Hansen, Per H.

    2014-01-01

    Review essay on: Capital in the Twenty-First Century. By Thomas Piketty . Translated by Arthur Goldhammer . Cambridge, Mass.: The Belknap Press of Harvard University Press, 2014. viii + 685 pp......Review essay on: Capital in the Twenty-First Century. By Thomas Piketty . Translated by Arthur Goldhammer . Cambridge, Mass.: The Belknap Press of Harvard University Press, 2014. viii + 685 pp...

  3. AVSS 2007: IEEE International Conference onAdvanced Video and Signal based Surveillance, London, UK, September 2007

    DEFF Research Database (Denmark)

    Fihl, Preben

    This technical report will cover the participation in the IEEE International Conference on Advanced Video and Signal based Surveillance in September 2007. The report will give a concise description of the most relevant topics presented at the conference, focusing on the work related to the HERMES...

  4. FIRST CALL FOR PAPERS The Second IEEE Pacific-Rim Conference on Multimedia

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Oct. 24~26, 2001, Beijing, China http://research.microsoft.com/~PCM2001. IEEE Signal Processing Society, IEEE Circuits and Systems Society National Science Foundation of China IEEE China, Electronics Society Of China, China Society of Electronics China Society of Computers, China Society of Image and Graphics   The second IEEE Pacific-Rim Conference on Multimedia will be held in Beijing in the next “golden autumn”. Beijing has been the culture capital of Chinese for near one thousand years with many historical palaces, magnificent museums and beautiful parks, as well as rich culture activities. In the last decade, Beijing has also witnessed spectacular growth of hi-tech industry, especially in the Internet and multimedia applications areas. The conference site, Zhongguangchun, known as China's Silicon Valley, is the national center of research, development and education with hundreds of universities and research institutions, and many successful companies providing both multimedia content and systems expertise. The conference complements this wonderful setting by providing a forum to presenting and exploring technological and artistic advancements in multimedia. Technical issues, theory and practice, artistic and consumer innovations will bring together researchers, artists, developers, educators, performers, and practitioners of multimedia from Pacific-Rim and the world. Present your work at PCM2001 and define the future of multimedia in the next millennium!   The technical program will feature keynote addresses, tutorials, special sessions, panels, technical demonstrations, in addition to technical presentations of refereed papers. We cordially invite you to submit your work in one or more of about forms for, but not limited to, the following three areas:   Multimedia processing and coding, including multimedia processing and compression, content analysis, content-based retrieval, watermarking and security;   Multimedia system support and

  5. 15th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing

    CERN Document Server

    2015-01-01

    This edited book presents scientific results of 15th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD 2014) held on June 30 – July 2, 2014 in Las Vegas Nevada, USA. The aim of this conference was to bring together scientists, engineers, computer users, and students to share their experiences and exchange new ideas, research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them. The conference organizers selected the 13 outstanding papers from those papers accepted for presentation at the conference.

  6. 14th ACIS/IEEE International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing

    CERN Document Server

    Studies in Computational Intelligence : Volume 492

    2013-01-01

    This edited book presents scientific results of the 14th ACIS/IEEE International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD 2013), held in Honolulu, Hawaii, USA on July 1-3, 2013. The aim of this conference was to bring together scientists, engineers, computer users, and students to share their experiences and exchange new ideas, research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them. The conference organizers selected the 17 outstanding papers from those papers accepted for presentation at the conference.  

  7. Intelligence in the Twenty-First Century

    OpenAIRE

    2000-01-01

    The author concludes that the world will most probably remain rife with conflict even in the twenty first century and that the traditional role of intelligence will not only continue but will increase in importance. He characterizes the international situation as being "more of the same historically"; that is, the existence of several different centers of power and mutual conflicts based solely on national interests. In order to protect and promote one's national interests, sovereign states w...

  8. Servicing the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Fisk, D. [DTLR, London (United Kingdom)

    2002-04-01

    Twentieth century governments have committed themselves to the principle of sustainable development. Efforts to fulfil this goal offer an insight into changes in building services provision in the opening decades of the new century. Sustainable development indicators are used to identify possible trends. The analysis also forms the basis for some speculative conjectures as a basis for a research agenda for the twenty-first century. (Author)

  9. Twenty-first century learning in afterschool.

    Science.gov (United States)

    Schwarz, Eric; Stolow, David

    2006-01-01

    Twenty-first century skills increasingly represent the ticket to the middle class. Yet, the authors argue, in-school learning is simply not enough to help students develop these skills. The authors make the case that after-school (or out-of-school) learning programs are emerging as one of the nation's most promising strategies for preparing young people for the workforce and civic life. Most school systems have significant limitations for teaching twenty-first century skills. They have the limits of time: with only six hours per day there is barely enough time to teach even the basic skills, especially for those students starting already behind. They have the limits of structure: typical school buildings and classrooms are not physically set up for innovative learning. They have the limits of inertia and bureaucracy: school systems are notoriously resistant to change. And perhaps most important, they have the limits of priorities: especially with the onset of the No Child Left Behind Act, schools are laserlike in their focus on teaching the basics and therefore have less incentive to incorporate twenty-first century skills. Meanwhile, the authors argue that after-school programs are an untapped resource with three competitive advantages. First, they enable students to work collaboratively in small groups, a setup on which the modern economy will increasingly rely. Second, they are well suited to project-based learning and the development of mastery. Third, they allow students to learn in the real-world contexts that make sense. Yet the after-school sector is fraught with challenges. It lacks focus-Is it child care, public safety, homework tutoring? And it lacks rigorous results. The authors argue that the teaching of twenty-first century skills should become the new organizing principle for afterschool that will propel the field forward and more effectively bridge in-school and out-of-school learning.

  10. Outline report of capable and leading energy system international conference for the twenty-first century; Renewable and Advanced Energy Systems for the 21st Cencury (21seiki no tameno saisei kano sendoteki enerugi sisutemu) kokusaikaigi no gaiyo hokoku

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, Tadayoshi

    1999-07-31

    The above-mentioned international conference was held in U.S.A., HAWAII State, Maui Island. Though and, it differently and independently sponsored this time thermochemistry department, SED of JSME held it, and leading energy system department of ASME and cosponsor and Korea Institution of Mechanical Engineers between U.S.A. air conditioning and sanitary engineering association, Korea air conditioning and sanitary engineering association also cooperated and were held. Finally adopted number of paper was about 140, and participation enrollment about 160 persons, participating nation number was the 15 nations. (NEDO)

  11. The twenty-first century in space

    CERN Document Server

    Evans, Ben

    2015-01-01

    This final entry in the History of Human Space Exploration mini-series by Ben Evans continues with an in-depth look at the latter part of the 20th century and the start of the new millennium. Picking up where Partnership in Space left off, the story commemorating the evolution of manned space exploration unfolds in further detail. More than fifty years after Yuri Gagarin’s pioneering journey into space, Evans extends his overview of how that momentous voyage continued through the decades which followed. The Twenty-first Century in Space, the sixth book in the series, explores how the fledgling partnership between the United States and Russia in the 1990s gradually bore fruit and laid the groundwork for today’s International Space Station. The narrative follows the convergence of the Shuttle and Mir programs, together with standalone missions, including servicing the Hubble Space Telescope, many of whose technical and human lessons enabled the first efforts to build the ISS in orbit. The book also looks to...

  12. IEEE Conference on Software Engineering Education and Training (CSEE&T 2012) Proceedings (25th, Nanjing, Jiangsu, China, April 17-19, 2012)

    Science.gov (United States)

    IEEE Conference on Software Engineering Education and Training, Proceedings (MS), 2012

    2012-01-01

    The Conference on Software Engineering Education and Training (CSEE&T) is the premier international peer-reviewed conference, sponsored by the Institute of Electrical and Electronics Engineers, Inc. (IEEE) Computer Society, which addresses all major areas related to software engineering education, training, and professionalism. This year, as in…

  13. IEEE Conference on Software Engineering Education and Training (CSEE&T 2012) Proceedings (25th, Nanjing, Jiangsu, China, April 17-19, 2012)

    Science.gov (United States)

    IEEE Conference on Software Engineering Education and Training, Proceedings (MS), 2012

    2012-01-01

    The Conference on Software Engineering Education and Training (CSEE&T) is the premier international peer-reviewed conference, sponsored by the Institute of Electrical and Electronics Engineers, Inc. (IEEE) Computer Society, which addresses all major areas related to software engineering education, training, and professionalism. This year, as…

  14. IEEE Conference on Software Engineering Education and Training (CSEE&T 2012) Proceedings (25th, Nanjing, Jiangsu, China, April 17-19, 2012)

    Science.gov (United States)

    IEEE Conference on Software Engineering Education and Training, Proceedings (MS), 2012

    2012-01-01

    The Conference on Software Engineering Education and Training (CSEE&T) is the premier international peer-reviewed conference, sponsored by the Institute of Electrical and Electronics Engineers, Inc. (IEEE) Computer Society, which addresses all major areas related to software engineering education, training, and professionalism. This year, as…

  15. 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...

  16. 17th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing

    CERN Document Server

    SNPD 2016

    2016-01-01

    This edited book presents scientific results of the 17th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD 2016) which was held on May 30 - June 1, 2016 in Shanghai, China. The aim of this conference was to bring together researchers and scientists, businessmen and entrepreneurs, teachers, engineers, computer users, and students to discuss the numerous fields of computer science and to share their experiences and exchange new ideas and information in a meaningful way. Research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them.

  17. 6th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing

    CERN Document Server

    2016-01-01

    This edited book presents scientific results of the 16th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD 2015) which was held on June 1 – 3, 2015 in Takamatsu, Japan. The aim of this conference was to bring together researchers and scientists, businessmen and entrepreneurs, teachers, engineers, computer users, and students to discuss the numerous fields of computer science and to share their experiences and exchange new ideas and information in a meaningful way. Research results about all aspects (theory, applications and tools) of computer and information science, and to discuss the practical challenges encountered along the way and the solutions adopted to solve them.

  18. Twenty-First Asilomar Conference on Polymeric Materials

    Science.gov (United States)

    2007-11-02

    when compared to the pure polymer matrix. The thermodynamic stability of the composite depends on the molecular interactions between the polymers...polyolefin plastomers (e.g., Affinity™; Exact ), EPDM , enhanced PE (e.g., Elite™, Exceed ™), polypropylenes and ethylene/styrene interpolymers (ESI...fibril stability developed for creep. Molecular Design of Smart Surfaces Jeffrey T. Koberstein The Polymer Program and Department of Chemical

  19. Proceeding of the ACM/IEEE-CS Joint Conference on Digital Libraries (1st, Roanoke, Virginia, June 24-28, 2001).

    Science.gov (United States)

    Association for Computing Machinery, New York, NY.

    Papers in this Proceedings of the ACM/IEEE-CS Joint Conference on Digital Libraries (Roanoke, Virginia, June 24-28, 2001) discuss: automatic genre analysis; text categorization; automated name authority control; automatic event generation; linked active content; designing e-books for legal research; metadata harvesting; mapping the…

  20. Proceedings of the 1986 IEEE international conference on robotics and automation

    Energy Technology Data Exchange (ETDEWEB)

    1986-01-01

    This book presents the papers given at a conference on robots. Topics considered at the conference included manipulator simulations and solutions, robot dynamics and control, control mechanization, multi-arm control and planning, computer vision, planning and scheduling for automated electronics manufacturing, machining simulation, programming, adaptive manipulator control, manipulator dynamics, advanced control techniques, robot control organization, advanced sensing techniques, advanced robot control concepts and mechanizations, machine vision techniques, and multiple view and motion in computer vision.

  1. 3rd IEEE/IFToMM International Conference on Reconfigurable Mechanisms and Robots

    CERN Document Server

    Kong, Xianwen; Dai, Jian; ReMAR 2015; Advances in Reconfigurable Mechanisms and Robots II

    2016-01-01

    This book presents the most recent advances in the research and applications of reconfigurable mechanisms and robots. It collects 93 independently reviewed papers presented at the Third ASME/IFToMM International Conference on Reconfigurable Mechanisms and Robots (ReMAR 2015) held in Beijing, China, 20-22 July 2015. The conference papers are organized into seven parts to cover the reconfiguration theory, topology, kinematics and design of reconfigurable mechanisms including reconfigurable parallel mechanisms. The most recent results on reconfigurable robots are presented including their analysis, design, simulation and control. Bio-inspired mechanisms are also explored in the challenging fields of rehabilitation and minimally invasive surgery. This book further addresses deployable mechanisms and origami-inspired mechanisms and showcases a wide range of successful applications of reconfigurable mechanisms and robots. Advances in Reconfigurable Mechanisms and Robots II should be of interest for researchers, eng...

  2. IEEE Conference Record of 1973 Eleventh Modulator Symposium, New York City, 18-19 September 1973.

    Science.gov (United States)

    1973-01-01

    of kV h be demosreusi (den such as HVDC circuit breakers and current limiters rode spacings of I to 3 cm at gas pressures (hydrogen for AC systems...12. N.E. Reed, "A Novel Switching Device for Use Radial Field Distribution in a Penning Discharge in an HVDC Circuit Breaker , " Conference by Means of...capable of following four functions: closing and opening an HVDC circuit . The tube oper- ates as a Penning discharge which can be controlled 1. Remain in a

  3. 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.

  4. The Work Place of the Early Twenty-First Century.

    Science.gov (United States)

    Brown, James M.

    1991-01-01

    Major issues affecting the workplace of the twenty-first century include productivity growth, globalization, resistance to change, worker alienation, and telecommunications. Opposing views of technology are that (1) it will improve the economy and create jobs or (2) the majority of new jobs will not require high skills. (SK)

  5. Membership, Belonging, and Identity in the Twenty-First Century

    Science.gov (United States)

    Motteram, Gary

    2016-01-01

    This article takes a case study approach to exploring membership, belonging, and identity amongst English language teachers in the twenty-first century. It explores findings from two membership surveys conducted for the International Association of Teachers of English as a Foreign Language (IATEFL), and considers the impact of recommendations…

  6. Tall Fescue for the Twenty-first Century

    Science.gov (United States)

    Tall Fescue for the Twenty-first Century is a comprehensive monograph by experts from around the world about the science of tall fescue [Lolium arundinaceum (Schreb.) Darbysh. = Schedonorus arundinaceus (Schreb.) Dumort., formerly Fes¬tuca arundinacea Schreb. var. arundinacea] and its applications. ...

  7. Powering into the twenty-first century [Singapore Power Limited

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1997-07-01

    To meet the challenges of the twenty-first century power industry, Singapore Power was incorporated as a commercial entity in October 1995. As the leading energy company in Singapore, SP continues to invest heavily in infrastructure development to improve its service efficiency and reliability, and to maintain its reputation as one of the world`s best power suppliers. (UK)

  8. Afterword: Victorian Sculpture for the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    David J. Getsy

    2016-06-01

    Full Text Available Commenting on the directions proposed by this issue of '19', the afterword discusses the broad trends in twenty-first century studies of Victorian sculpture and the opportunity for debate arising from the first attempt at a comprehensive exhibition.

  9. Membership, Belonging, and Identity in the Twenty-First Century

    Science.gov (United States)

    Motteram, Gary

    2016-01-01

    This article takes a case study approach to exploring membership, belonging, and identity amongst English language teachers in the twenty-first century. It explores findings from two membership surveys conducted for the International Association of Teachers of English as a Foreign Language (IATEFL), and considers the impact of recommendations…

  10. The Presidential Platform on Twenty-First Century Education Goals

    Science.gov (United States)

    Tichnor-Wagner, Ariel; Socol, Allison Rose

    2016-01-01

    As social and economic problems change, so do the goals of education reformers. This content analysis of presidential debates transcripts, state of the union addresses, and education budgets from 2000 to 2015 reveals the ways in which presidents and presidential candidates have framed education goals thus far in the twenty-first century. Using…

  11. The Work Place of the Early Twenty-First Century.

    Science.gov (United States)

    Brown, James M.

    1991-01-01

    Major issues affecting the workplace of the twenty-first century include productivity growth, globalization, resistance to change, worker alienation, and telecommunications. Opposing views of technology are that (1) it will improve the economy and create jobs or (2) the majority of new jobs will not require high skills. (SK)

  12. Digital earth applications in the twenty-first century

    NARCIS (Netherlands)

    de By, R.A.; Georgiadou, P.Y.

    2014-01-01

    In these early years of the twenty-first century, we must look at how the truly cross-cutting information technology supports other innovations, and how it will fundamentally change the information positions of government, private sector and the scientific domain as well as the citizen. In those

  13. NATO’s Relevance in the Twenty-First Century

    Science.gov (United States)

    2012-03-22

    rules of engagement for force protection.19 NATO Foreign Ministers authorized the Supreme Allied Commander Europe (SACEUR) to begin the next stage of...the mission on 9 December 2004. The activation order for this next stage was given by SACEUR on 16 December 2004. It allowed the deployment of 300...Christopher Coker, Globalisation and Insecurity in the Twenty-first Century: NATO and the Management of Risk (The International Institute for Strategic

  14. Proceedings of the twenty-first LAMPF users group meeting

    Energy Technology Data Exchange (ETDEWEB)

    1988-04-01

    The Twenty-First Annual LAMPF Users Group Meeting was held November 9-10, 1987, at the Clinton P. Anderson Meson Physics Facility. The program included a number of invited talks on various aspects of nuclear and particle physics as well as status reports on LAMPF and discussions of upgrade options. The LAMPF working groups met and discussed plans for the secondary beam lines, experimental programs, and computing facilities.

  15. About capital in the twenty-first century

    OpenAIRE

    2015-01-01

    In this article, I present three key facts about income and wealth inequality in the long run emerging from my book, Capital in the Twenty-First Century, and seek to sharpen and refocus the discussion about those trends. In particular, I clarify the role played by r > g in my analysis of wealth inequality. I also discuss some of the implications for optimal taxation, and the relation between capital-income ratios and capital shares.

  16. Technological sciences society of the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-04-15

    This book introduces information-oriented society of the twenty-first century connected to computer network for example memory of dream : F-ram, information-oriented society : New media, communications network for next generation ; ISDN on what is IDSN?, development of information service industry, from office automation to an intelligent building in the future, home shopping and home banking and rock that hinders information-oriented society.

  17. Early twenty-first-century droughts during the warmest climate

    Directory of Open Access Journals (Sweden)

    Felix Kogan

    2016-01-01

    Full Text Available The first 13 years of the twenty-first century have begun with a series of widespread, long and intensive droughts around the world. Extreme and severe-to-extreme intensity droughts covered 2%–6% and 7%–16% of the world land, respectively, affecting environment, economies and humans. These droughts reduced agricultural production, leading to food shortages, human health deterioration, poverty, regional disturbances, population migration and death. This feature article is a travelogue of the twenty-first-century global and regional droughts during the warmest years of the past 100 years. These droughts were identified and monitored with the National Oceanic and Atmospheric Administration operational space technology, called vegetation health (VH, which has the longest period of observation and provides good data quality. The VH method was used for assessment of vegetation condition or health, including drought early detection and monitoring. The VH method is based on operational satellites data estimating both land surface greenness (NDVI and thermal conditions. The twenty-first-century droughts in the USA, Russia, Australia and Horn of Africa were intensive, long, covered large areas and caused huge losses in agricultural production, which affected food security and led to food riots in some countries. This research also investigates drought dynamics presenting no definite conclusion about drought intensification or/and expansion during the time of the warmest globe.

  18. IEEE Sensors 2004 Conference

    Science.gov (United States)

    2004-10-27

    feature from the transient response for the features. M2P-P4: The characterization of nanostructured copper- doped tin oxide films for gas sensor...microarrays - Just to note they used RF magnetron spluttered technique to produce SnO2- CuO sensors that were sensitive towards NH3 (this is a gas of...sensors based on nanoparticle W03 thick films They used commercial W03 nanopowder from Aldrich, this was mixed with InCl3 or BiCI3 and screen printed onto

  19. Twenty-first-century medical microbiology services in the UK.

    Science.gov (United States)

    Duerden, Brian

    2005-12-01

    With infection once again a high priority for the UK National Health Service (NHS), the medical microbiology and infection-control services require increased technology resources and more multidisciplinary staff. Clinical care and health protection need a coordinated network of microbiology services working to consistent standards, provided locally by NHS Trusts and supported by the regional expertise and national reference laboratories of the new Health Protection Agency. Here, I outline my thoughts on the need for these new resources and the ways in which clinical microbiology services in the UK can best meet the demands of the twenty-first century.

  20. Accelerators for the twenty-first century a review

    CERN Document Server

    Wilson, Edmund J N

    1990-01-01

    The development of the synchrotron, and later the storage ring, was based upon the electrical technology at the turn of this century, aided by the microwave radar techniques of World War II. This method of acceleration seems to have reached its limit. Even superconductivity is not likely to lead to devices that will satisfy physics needs into the twenty-first century. Unless a new principle for accelerating elementary particles is discovered soon, it is difficult to imagine that high-energy physics will continue to reach out to higher energies and luminosities.

  1. Earth observations in the twenty-first century

    Science.gov (United States)

    Geller, M. A.

    1986-01-01

    Some of the achievements of earth observations from past space missions are described. Also discussed are the achievements to be anticipated from currently approved and planned earth observation missions. In looking forward to what the objectives of earth observations from space are expected to be in the future, together with what technology is expected to enable, what the earth observing program will look like during the first part of the twenty-first century is discussed. It is concluded that a key part of this program will be long-term observations holistically viewing the earth system.

  2. The Dialectics of Discrimination in the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    John Stone

    2007-12-01

    Full Text Available This article explores some of the latest developments in the scholarship on race relations and nationalism that seek to address the impact of globalization and the changed geo-political relations of the first decade of the twenty-first century. New patterns of identification, some of which challenge existing group boundaries and others that reinforce them, can be seen to flow from the effects of global market changes and the political counter-movements against them. The impact of the “war on terrorism”, the limits of the utility of hard power, and the need for new mechanisms of inter-racial and inter-ethnic conflict resolution are evaluated to emphasize the complexity of these group relations in the new world disorder.

  3. Twenty-first century power needs. Challenges, and supply options

    Energy Technology Data Exchange (ETDEWEB)

    Criswell, D.R. [Houston Univ., TX (United States). Solar Energy Lab.

    1997-11-01

    The challenge of providing adequate power to enable world prosperity in the twenty-first century to continue was discussed. It was estimated that by 2050, a prosperous world of 10 billion people will require 60 TWt of thermal power. Conventional power systems will not be able to provide the needed energy because of limited fuels, contamination of the biosphere and costs. A viable, cost effective alternative will be solar energy that is captured in space and from facilities on the Moon, and that is imported to Earth by microwaves. Global electric power systems that use the Moon and deliver 1,000 TWe-Y of energy by 2070 was suggested as the most obvious alternative. Despite the huge initial cost of 20 to 100 trillion dollars, the long-term cost was said to be small compared to terrestrial and Earth-orbital options. 30 refs., 2 figs.

  4. Nuclear energy into the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Hammond, G.P. [Bath Univ. (United Kingdom). School of Mechanical Engineering

    1996-12-31

    The historical development of the civil nuclear power generation industry is examined in the light of the need to meet conflicting energy-supply and environmental pressures over recent decades. It is suggested that fission (thermal and fast) reactors will dominate the market up to the period 2010-2030, with fusion being relegated to the latter part of the twenty-first century. A number of issues affecting the use of nuclear electricity generation in Western Europe are considered including its cost, industrial strategy needs, and the public acceptability of nuclear power. The contribution of nuclear power stations to achieving CO2 targets aimed at relieving global warming is discussed in the context of alternative strategies for sustainable development, including renewable energy sources and energy-efficiency measures. Trends in the generation of nuclear electricity from fission reactors are finally considered in terms of the main geopolitical groupings that make up the world in the mid-1990s. Several recent, but somewhat conflicting, forecasts of the role of nuclear power in the fuel mix to about 2020 are reviewed. It is argued that the only major expansion in generating capacity will take place on the Asia-Pacific Rim and not in the developing countries generally. Nevertheless, the global nuclear industry overall will continue to be dominated by a small number of large nuclear electricity generating countries; principally the USA, France and Japan. (UK).

  5. New Bachelards?: Reveries, Elements and Twenty-First Century Materialisms

    Directory of Open Access Journals (Sweden)

    James L. Smith

    2012-10-01

    Full Text Available Recent years have seen an infusion of new ideas into material philosophy through the work of the so-called ‘new materialists’. Poignant examples appear within two recent books: the first, Vibrant Matter by Jane Bennett (2010, sets out to “enhance receptivity to the impersonal life that surrounds and infuses us” (2010: 4. The second, Elemental Philosophy by David Macauley (2010, advocates an anamnesis or recollection of the elements as imaginatively dynamic matter. Within his essays on the imagination of matter, Gaston Bachelard outlined an archetypal vision of the elements predicated upon the material imagination. He explored the manner in which the imagination inhabits the world, is triggered by the stimulus of material dynamism, and is formed from a co-constitution of subject and object. This article proposes that recent trends in materialist philosophy – as exemplified by the monographs of Bennett and Macauley – reinforce the ideas of Bachelard and take them in new directions. Bachelard provides us with a compelling argument for the rediscovery of material imagination, whereas New Materialism portrays a vision of matter filled with autonomous dynamism that lends itself to entering into a relationship with this imagination. Consequently, this article proposes that Gaston Bachelard has gained a new relevance as a result of contemporary trends in material philosophy, has taken on new possibilities through recent scholarship, and remains a force within the twenty-first century discursive landscape.

  6. Strategies for Teaching Maritime Archaeology in the Twenty First Century

    Science.gov (United States)

    Staniforth, Mark

    2008-12-01

    Maritime archaeology is a multi-faceted discipline that requires both theoretical learning and practical skills training. In the past most universities have approached the teaching of maritime archaeology as a full-time on-campus activity designed for ‘traditional’ graduate students; primarily those in their early twenties who have recently come from full-time undergraduate study and who are able to study on-campus. The needs of mature-age and other students who work and live in different places (or countries) and therefore cannot attend lectures on a regular basis (or at all) have largely been ignored. This paper provides a case study in the teaching of maritime archaeology from Australia that, in addition to ‘traditional’ on-campus teaching, includes four main components: (1) learning field methods through field schools; (2) skills training through the AIMA/NAS avocational training program; (3) distance learning topics available through CD-ROM and using the Internet; and (4) practicums, internships and fellowships. The author argues that programs to teach maritime archaeology in the twenty first century need to be flexible and to address the diverse needs of students who do not fit the ‘traditional’ model. This involves collaborative partnerships with other universities as well as government underwater cultural heritage management agencies and museums, primarily through field schools, practicums and internships.

  7. IEEE Conference Record of 1978 Thirteenth Pulse Power Modulator Symposium, Buffalo, New York, 20-22 June 1978.

    Science.gov (United States)

    1978-01-01

    Kracht " HVDC Vacuum Circuit Breakers ," IEEE Trans. PAS Vol. 91, pp. 1575-1588 (1972). 2. R. W. Warren, ’"Vacuum Interrupters Used for the Interruption... breaker . zontal time scale is different in Figures 4 and 5; in each case, about 1-1/2 cycles of operation are shown. Control Circuit (5) Figure 2 is a...mitters lacking fast trip circuit breakers when a positive voltage appears on the for interrupting the supply of H.T. current thyratron grid

  8. Twenty-first workshop on geothermal reservoir engineering: Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    None

    1996-01-26

    PREFACE The Twenty-First Workshop on Geothermal Reservoir Engineering was held at the Holiday Inn, Palo Alto on January 22-24, 1996. There were one-hundred fifty-five registered participants. Participants came from twenty foreign countries: Argentina, Austria, Canada, Costa Rica, El Salvador, France, Iceland, Indonesia, Italy, Japan, Mexico, The Netherlands, New Zealand, Nicaragua, the Philippines, Romania, Russia, Switzerland, Turkey and the UK. The performance of many geothermal reservoirs outside the United States was described in several of the papers. Professor Roland N. Horne opened the meeting and welcomed visitors. The key note speaker was Marshall Reed, who gave a brief overview of the Department of Energy's current plan. Sixty-six papers were presented in the technical sessions of the workshop. Technical papers were organized into twenty sessions concerning: reservoir assessment, modeling, geology/geochemistry, fracture modeling hot dry rock, geoscience, low enthalpy, injection, well testing, drilling, adsorption and stimulation. Session chairmen were major contributors to the workshop, and we thank: Ben Barker, Bobbie Bishop-Gollan, Tom Box, Jim Combs, John Counsil, Sabodh Garg, Malcolm Grant, Marcel0 Lippmann, Jim Lovekin, John Pritchett, Marshall Reed, Joel Renner, Subir Sanyal, Mike Shook, Alfred Truesdell and Ken Williamson. Jim Lovekin gave the post-dinner speech at the banquet and highlighted the exciting developments in the geothermal field which are taking place worldwide. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank our students who operated the audiovisual equipment. Shaun D. Fitzgerald Program Manager.

  9. Decadal potential predictability of twenty-first century climate

    Energy Technology Data Exchange (ETDEWEB)

    Boer, George J. [Canadian Centre for Climate Modelling and Analysis, Environment Canada, PO Box 3065, Victoria, BC (Canada)

    2011-03-15

    Decadal prediction of the coupled climate system is potentially possible given enough information and knowledge. Predictability will reside in both externally forced and in long timescale internally generated variability. The ''potential predictability'' investigated here is characterized by the fraction of the total variability accounted for by these two components in the presence of short-timescale unpredictable ''noise'' variability. Potential predictability is not a classical measure of predictability nor a measure of forecast skill but it does identify regions where long timescale variability is an appreciable fraction of the total and hence where prediction on these scale may be possible. A multi-model estimate of the potential predictability variance fraction (ppvf) as it evolves through the first part of the twenty-first century is obtained using simulation data from the CMIP3 archive. Two estimates of potential predictability are used which depend on the treatment of the forced component. The multi-decadal estimate considers the magnitude of the forced component as the change from the beginning of the century and so becomes largely a measure of climate change as the century progresses. The next-decade estimate considers the change in the forced component from the past decade and so is more pertinent to an actual forecast for the next decade. Long timescale internally generated variability provides additional potential predictability beyond that of the forced component. The ppvf may be expressed in terms of a signal-to-noise ratio and takes on values between 0 and 1. The largest values of the ppvf for temperature are found over tropical and mid-latitude oceans, with the exception of the equatorial Pacific, and some but not all tropical land areas. Overall the potential predictability for temperature generally declines with latitude and is relatively low over mid- to high-latitude land. Potential predictability for

  10. Introduction to the special issue on the joint meeting of the 19th IEEE International Symposium on the Applications of Ferroelectrics and the 10th European Conference on the Applications of Polar Dielectrics.

    Science.gov (United States)

    Tsurumi, Takaaki

    2011-09-01

    The joint meeting of the 19th IEEE International Symposium on the Applications of Ferroelectrics and the 10th European Conference on the Applications of Polar Dielectrics took place in Edinburgh from August 9-12, 2010. The conference was attended by 390 delegates from more than 40 different countries. There were 4 plenary speakers, 56 invited speakers, and a further 222 contributed oral presentations in 7 parallel session. In addition there were 215 poster presentations. Key topics addressed at the conference included piezoelectric materials, leadfree piezoelectrics, and multiferroics.

  11. 1991 IEEE International Joint Conference on Neural Networks, Singapore, Nov. 18-21, 1991, Proceedings. Vols. 1-3

    Energy Technology Data Exchange (ETDEWEB)

    1991-01-01

    The present conference the application of neural networks to associative memories, neurorecognition, hybrid systems, supervised and unsupervised learning, image processing, neurophysiology, sensation and perception, electrical neurocomputers, optimization, robotics, machine vision, sensorimotor control systems, and neurodynamics. Attention is given to such topics as optimal associative mappings in recurrent networks, self-improving associative neural network models, fuzzy activation functions, adaptive pattern recognition with sparse associative networks, efficient question-answering in a hybrid system, the use of abstractions by neural networks, remote-sensing pattern classification, speech recognition with guided propagation, inverse-step competitive learning, and rotational quadratic function neural networks. Also discussed are electrical load forecasting, evolutionarily stable and unstable strategies, the capacity of recurrent networks, neural net vs control theory, perceptrons for image recognition, storage capacity of bidirectional associative memories, associative random optimization for control, automatic synthesis of digital neural architectures, self-learning robot vision, and the associative dynamics of chaotic neural networks.

  12. A Critical Feminist and Race Critique of Thomas Piketty's "Capital in the Twenty-First Century"

    Science.gov (United States)

    Moeller, Kathryn

    2016-01-01

    Thomas Piketty's "Capital in the Twenty-first Century" documents the foreboding nature of rising wealth inequality in the twenty-first century. In an effort to promote a more just and democratic global society and rein in the unfettered accumulation of wealth by the few, Piketty calls for a global progressive annual tax on corporate…

  13. A Critical Feminist and Race Critique of Thomas Piketty's "Capital in the Twenty-First Century"

    Science.gov (United States)

    Moeller, Kathryn

    2016-01-01

    Thomas Piketty's "Capital in the Twenty-first Century" documents the foreboding nature of rising wealth inequality in the twenty-first century. In an effort to promote a more just and democratic global society and rein in the unfettered accumulation of wealth by the few, Piketty calls for a global progressive annual tax on corporate…

  14. Slowmation: A Twenty-First Century Educational Tool for Science and Mathematics Pre-Service Teachers

    Science.gov (United States)

    Paige, Kathryn; Bentley, Brendan; Dobson, Stephen

    2016-01-01

    Slowmation is a twenty-first century digital literacy educational tool. This teaching and learning tool has been incorporated as an assessment strategy in the curriculum area of science and mathematics with pre-service teachers (PSTs). This paper explores two themes: developing twenty-first century digital literacy skills and modelling best…

  15. Australia and India: Facing the Twenty-First Century Skills Challenge. Conference Paper

    Science.gov (United States)

    Beddie, Francesca M.

    2009-01-01

    The governments of India and Australia are working to enhance cooperation on training, at both official and industry level. As part of the exchange of ideas, Francesca Beddie, General Manager, Research, National Centre for Vocational Education Research, visited India in August 2009 at the invitation of the Australia-India Council. This paper…

  16. Into the twenty-first century: harmonizing energy policy, environment, and sustainable economic growth. Conference proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    59 papers are presented under the following headings: energy and environment - roundtable on East Europe; policy issues - automobiles and the environment; empirical studies of energy-efficient behaviour; electric power and economic development; energy prices and aggregate economic behaviour; energy policy; oil and gas issues; electricity; economic development and the environment; energy and the environment; automobile use of gasoline and alternative fuels; energy markets and policy in Russia and the Baltics; balancing emissions reductions and economic growth - regional studies; frontiers in energy modelling; natural gas markets; economic liberalisation and political reform - the impact on energy; greenhouse gas policy in developing economics; evaluation of utility demand-side management programs; consequences of electricity policy reform; regional efficiency of energy use; oil reserves, taxation and wealth; risks and rents in electric power; and estimating energy demand behaviour.

  17. Projection of drought hazards in China during twenty-first century

    Science.gov (United States)

    Liang, Yulian; Wang, Yongli; Yan, Xiaodong; Liu, Wenbin; Jin, Shaofei; Han, Mingchen

    2017-06-01

    Drought is occurring with increased frequency under climate warming. To understand the behavior of drought and its variation in the future, current and future drought in the twenty-first century over China is discussed. The drought frequency and trend of drought intensity are assessed using the Palmer Drought Severity Index (PDSI), which is calculated based on historical meteorological observations and outputs of the fifth Coupled Model Intercomparison Project (CMIP5) under three representative concentration pathway (RCP) scenarios. The simulation results of drought period, defined by PDSI class, could capture more than 90% of historical drought events. Projection results indicate that drought frequency will increase over China in the twenty-first century under the RCP4.5 and RCP8.5 scenarios. In the mid-twenty-first century (2021-2050), similar patterns of drought frequency are found under the three emission scenarios, and annual drought duration would last 3.5-4 months. At the end of the twenty-first century (2071-2100), annual drought duration could exceed 5 months in northwestern China as well as coastal areas of eastern and southern China under the RCP8.5 scenario. Drought is slightly reduced over the entire twenty-first century under the RCP2.6 scenario, whereas drought hazards will be more serious in most regions of China under the RCP8.5 scenario.

  18. Memorias Conferencia Internacional IEEE Mexico 1971, Sobre Sistemas, Redes Y Computadoras. Volumen I and Volumen II. (Proceedings of International Conference of IEEE Concerning Systems, Networks, and Computers. Volume I and Volume II.

    Science.gov (United States)

    Concheiro, A. Alonso, Ed.; And Others

    The following papers in English from this international conference may be of particular interest to those in the field of education. T. Nakahara, A. Tsukamota, and M. Matsumoto describe a computer-aided design technique for an economical urban cable television system. W. D. Wasson and R. K. Chitkara outline a recognition scheme based on analysis…

  19. Memorias Conferencia Internacional IEEE Mexico 1971, Sobre Sistemas, Redes Y Computadoras. Volumen I and Volumen II. (Proceedings of International Conference of IEEE Concerning Systems, Networks, and Computers. Volume I and Volume II.

    Science.gov (United States)

    Concheiro, A. Alonso, Ed.; And Others

    The following papers in English from this international conference may be of particular interest to those in the field of education. T. Nakahara, A. Tsukamota, and M. Matsumoto describe a computer-aided design technique for an economical urban cable television system. W. D. Wasson and R. K. Chitkara outline a recognition scheme based on analysis…

  20. Border Crossing in Contemporary Brazilian Culture: Global Perspectives from the Twenty-First Century Literary Scene

    Directory of Open Access Journals (Sweden)

    Cimara Valim de Melo

    2016-06-01

    Full Text Available Abstract: This paper investigates the process of internationalisation of Brazilian literature in the twenty-first century from the perspective of the publishing market. For this, we analyse how Brazil has responded to globalisation and what effects of cultural globalisation can be seen in the Brazilian literary scene, focusing on the novel. Observing the movement of the novelists throughout the globe, the reception of Brazilian literature in the United Kingdom and the relations between art and the literary market in Brazil, we intend to provoke some reflections on Brazilian cultural history in the light of the twenty-first century.

  1. Border Crossing in Contemporary Brazilian Culture: Global Perspectives from the Twenty-First Century Literary Scene

    Directory of Open Access Journals (Sweden)

    Cimara Valim de Melo

    2016-06-01

    Full Text Available Abstract: This paper investigates the process of internationalisation of Brazilian literature in the twenty-first century from the perspective of the publishing market. For this, we analyse how Brazil has responded to globalisation and what effects of cultural globalisation can be seen in the Brazilian literary scene, focusing on the novel. Observing the movement of the novelists throughout the globe, the reception of Brazilian literature in the United Kingdom and the relations between art and the literary market in Brazil, we intend to provoke some reflections on Brazilian cultural history in the light of the twenty-first century.

  2. Movies to the Rescue: Keeping the Cold War Relevant for Twenty-First-Century Students

    Science.gov (United States)

    Gokcek, Gigi; Howard, Alison

    2013-01-01

    What are the challenges of teaching Cold War politics to the twenty-first-century student? How might the millennial generation be educated about the political science theories and concepts associated with this period in history? A college student today, who grew up in the post-Cold War era with the Internet, Facebook, Twitter, smart phones,…

  3. Violating Pedagogy: Literary Theory in the Twenty-First Century College Classroom

    Science.gov (United States)

    Johnson, Heather G. S.

    2015-01-01

    "Violating Pedagogy: Literary Theory in the Twenty-first Century College Classroom" discusses the challenge of teaching literary theory to undergraduate and graduate students in a cultural atmosphere that may at times feel simultaneously anti-intellectual and overpopulated with competing scholarly concerns. Approaching theory as a…

  4. Culture, Power, and the University in the Twenty-First Century

    Science.gov (United States)

    Murphy, Peter

    2012-01-01

    Powerful nations have influential systems of higher education. The article explores the possible pattern of geopolitics in the twenty-first century, and the competing prospects of America and its rivals in higher education and research. Pressures on both the American and non-American worlds are evaluated, along with relative economic strengths,…

  5. A Comment on Class Productions in Elite Secondary Schools in Twenty-First-Century Global Context

    Science.gov (United States)

    Weis, Lois

    2014-01-01

    In this closing essay, Lois Weis offers a broad overview of the contributions of this Special Issue on class production in elite secondary schools in the twenty-first-century global context. Drawing upon her own research within US privileged secondary schools, Weis explores the contemporary social, economic and political landscape as connected to…

  6. How Do Students Value the Importance of Twenty-First Century Skills?

    Science.gov (United States)

    Ahonen, Arto Kalevi; Kinnunen, Päivi

    2015-01-01

    Frameworks of twenty-first century skills have attained a central role in school development and curriculum changes all over the world. There is a common understanding of the need for meta-skills such as problem solving, reasoning, collaboration, and self-regulation. This article presents results from a Finnish study, in which 718 school pupils…

  7. Yeast culture collections in the twenty-first century: new opportunities and challenges

    NARCIS (Netherlands)

    Boundy-Mills, Kyria L.; Glantschnig, Ewald; Roberts, Ian N.; Yurkov, Andrey; Casaregola, Serge; Daniel, Heide-Marie; Groenewald, Marizeth; Turchetti, Benedetta

    2016-01-01

    The twenty-first century has brought new opportunities and challenges to yeast culture collections, whether they are long-standing or recently established. Basic functions such as archiving, characterizing and distributing yeasts continue, but with expanded responsibilities and emerging opportunitie

  8. The Five Cs of Digital Curation: Supporting Twenty-First-Century Teaching and Learning

    Science.gov (United States)

    Deschaine, Mark E.; Sharma, Sue Ann

    2015-01-01

    Digital curation is a process that allows university professors to adapt and adopt resources from multidisciplinary fields to meet the educational needs of twenty-first-century learners. Looking through the lens of new media literacy studies (Vasquez, Harste, & Albers, 2010) and new literacies studies (Gee, 2010), we propose that university…

  9. Movies to the Rescue: Keeping the Cold War Relevant for Twenty-First-Century Students

    Science.gov (United States)

    Gokcek, Gigi; Howard, Alison

    2013-01-01

    What are the challenges of teaching Cold War politics to the twenty-first-century student? How might the millennial generation be educated about the political science theories and concepts associated with this period in history? A college student today, who grew up in the post-Cold War era with the Internet, Facebook, Twitter, smart phones,…

  10. Education for Future-Oriented Citizenship: Implications for the Education of Twenty-First Century Competencies

    Science.gov (United States)

    Lee, Wing On

    2012-01-01

    Globalization and the knowledge economy have opened up worldwide agendas for national development. Following this is the emphasis on the social dimension, otherwise known as social capital. Much of social capital includes "soft skills" and "twenty-first century skills", which broadly cover critical, creative and inventive…

  11. Knowledge and Educational Research in the Context of "Twenty-First Century Learning"

    Science.gov (United States)

    Benade, Leon

    2014-01-01

    Educational researchers and academics cannot ignore the ever-present call for education, and schooling in particular, to reflect the needs of the twenty-first century knowledge economy. Since the 1990s, national curricula and education systems have reflected this call in their focus on technology and shifting pedagogy to increasingly…

  12. Theoretical Contexts and Conceptual Frames for the Study of Twenty-First Century Capitalism

    DEFF Research Database (Denmark)

    Hull Kristensen, Peer; Morgan, Glenn

    2012-01-01

    This chapter argues that the comparative institutionalist approach requires rethinking in the light of developments in the twenty-first century. The chapter emphasizes the following features of the new environment: first, the rise of the BRIC and the emerging economies; secondly, the changed...

  13. Way Forward in the Twenty-First Century in Content-Based Instruction: Moving towards Integration

    Science.gov (United States)

    Ruiz de Zarobe, Yolanda; Cenoz, Jasone

    2015-01-01

    The aim of this paper is to reflect on the theoretical and methodological underpinnings that provide the basis for an understanding of Content-Based Instruction/Content and Language Integrated Learning (CBI/CLIL) in the field and its relevance in education in the twenty-first century. It is argued that the agenda of CBI/CLIL needs to move towards…

  14. Humanities: The Unexpected Success Story of the Twenty-First Century

    Science.gov (United States)

    Davis, Virginia

    2012-01-01

    Humanities within universities faced challenges in the latter half of the twentieth century as their value in the modern world was questioned. This paper argues that there is strong potential for the humanities to thrive in the twenty-first century university sector. It outlines some of the managerial implications necessary to ensure that this…

  15. Visual Literacy: Does It Enhance Leadership Abilities Required for the Twenty-First Century?

    Science.gov (United States)

    Bintz, Carol

    2016-01-01

    The twenty-first century hosts a well-established global economy, where leaders are required to have increasingly complex skills that include creativity, innovation, vision, relatability, critical thinking and well-honed communications methods. The experience gained by learning to be visually literate includes the ability to see, observe, analyze,…

  16. Thomas Piketty – The Adam Smith of the Twenty-First Century?

    Directory of Open Access Journals (Sweden)

    Jacob Dahl Rendtorff

    2014-11-01

    Full Text Available Piketty’s book, Capital in the Twenty-First Century (2014 has become a bestseller in the world. Two month after its publication, it had sold more than 200.000 copies, and this success will surely continue for a long time. Piketty has established a new platform to discuss political economy.

  17. EXOGENOUS CHALLENGES FOR THE TOURISM INDUSTRY IN THE BEGINNING OF THE TWENTY FIRST CENTURY

    Directory of Open Access Journals (Sweden)

    Akosz Ozan

    2009-05-01

    Full Text Available Tourism is one of the fastest growing industries in the world. Besides its sustained growth the tourism industry has shown in the first years of the twenty first century that it can deal with political, military and natural disasters. The present paper ac

  18. Critical Remarks on Piketty's 'Capital in the Twenty-first Century'

    OpenAIRE

    Homburg, Stefan

    2014-01-01

    This paper discusses the central macroeconomic claims that are made in Thomas Piketty's book 'Capital in the Twenty-first Century'. The paper aims to show that Piketty's contentions are not only logically flawed but also contradicted by his own data.

  19. Teaching Middle School Language Arts: Incorporating Twenty-First Century Literacies

    Science.gov (United States)

    Small Roseboro, Anna J.

    2010-01-01

    "Teaching Middle School Language Arts" is the first book on teaching middle school language arts for multiple intelligences and related twenty-first-century literacies in technologically and ethnically diverse communities. More than 670,000 middle school teachers (grades six through eight) are responsible for educating nearly 13 million students…

  20. Testing Students under Cognitive Capitalism: Knowledge Production of Twenty-First Century Skills

    Science.gov (United States)

    Morgan, Clara

    2016-01-01

    Scholars studying the global governance of education have noted the increasingly important role corporations play in educational policy making. I contribute to this scholarship by examining the Assessment and Teaching of twenty-first century skills (ATC21S™) project, a knowledge production apparatus operating under cognitive capitalism. I analyze…

  1. Education for Future-Oriented Citizenship: Implications for the Education of Twenty-First Century Competencies

    Science.gov (United States)

    Lee, Wing On

    2012-01-01

    Globalization and the knowledge economy have opened up worldwide agendas for national development. Following this is the emphasis on the social dimension, otherwise known as social capital. Much of social capital includes "soft skills" and "twenty-first century skills", which broadly cover critical, creative and inventive thinking; information,…

  2. Twenty-first Semiannual Report of the Commission to the Congress, January 1957

    Energy Technology Data Exchange (ETDEWEB)

    Strauss, Lewis L.

    1957-01-31

    The document represents the twenty-first semiannual Atomic Energy Commission (AEC) report to Congress. The report sums up the major activities and developments in the national atomic energy program covering the period July - December 1956. A special part two of this semiannual report addresses specifically Radiation Safety in Atomic Energy Activities.

  3. Way Forward in the Twenty-First Century in Content-Based Instruction: Moving towards Integration

    Science.gov (United States)

    Ruiz de Zarobe, Yolanda; Cenoz, Jasone

    2015-01-01

    The aim of this paper is to reflect on the theoretical and methodological underpinnings that provide the basis for an understanding of Content-Based Instruction/Content and Language Integrated Learning (CBI/CLIL) in the field and its relevance in education in the twenty-first century. It is argued that the agenda of CBI/CLIL needs to move towards…

  4. Testing Students under Cognitive Capitalism: Knowledge Production of Twenty-First Century Skills

    Science.gov (United States)

    Morgan, Clara

    2016-01-01

    Scholars studying the global governance of education have noted the increasingly important role corporations play in educational policy making. I contribute to this scholarship by examining the Assessment and Teaching of twenty-first century skills (ATC21S™) project, a knowledge production apparatus operating under cognitive capitalism. I analyze…

  5. Why American business demands twenty-first century learning: A company perspective.

    Science.gov (United States)

    Knox, Allyson

    2006-01-01

    Microsoft is an innovative corporation demonstrating the kind and caliber of job skills needed in the twenty-first century. It demonstrates its commitment to twenty-first century skills by holding its employees accountable to a set of core competencies, enabling the company to run effectively. The author explores how Microsoft's core competencies parallel the Partnership for 21st Century Skills learning frameworks. Both require advanced problem-solving skills and a passion for technology, both expect individuals to be able to work in teams, both look for a love of learning, and both call for the self-confidence to honestly self-evaluate. Microsoft also works to cultivate twenty-first century skills among future workers, investing in education to help prepare young people for competitive futures. As the need for digital literacy has become imperative, technology companies have taken the lead in facilitating technology training by partnering with schools and communities. Microsoft is playing a direct role in preparing students for what lies ahead in their careers. To further twenty-first century skills, or core competencies, among the nation's youth, Microsoft has established Partners in Learning, a program that helps education organizations build partnerships that leverage technology to improve teaching and learning. One Partners in Learning grantee is Global Kids, a nonprofit organization that trains students to design online games focused on global social issues resonating with civic and global competencies. As Microsoft believes the challenges of competing in today's economy and teaching today's students are substantial but not insurmountable, such partnerships and investments demonstrate Microsoft's belief in and commitment to twenty-first century skills.

  6. New Poetics of the Film Body: Docility, Molecular Fundamentalism and Twenty First Century Destiny

    Directory of Open Access Journals (Sweden)

    Flynn Susan

    2015-06-01

    Full Text Available Twenty first century film evokes a new topology of the body. Science and technology are the new century’s ‘sovereign power’ which enforces biopolitics through bodies which, by virtue of being seen at their most fundamental level, have become docile surfaces. The film body is at once manipulated and coerced into an ethos of optimization; a thoroughly scientific and ‘molecular’ optimization which proffers ‘normalization’ and intimately regulated bodies. In the film bodies of this millennium, bodily intervention results in surveillance becoming internalized. Now the body is both a means and an end of social control. This essay applies the philosophies Michel Foucault and Nikolas Rose to twenty first century Hollywood film, elucidating a new tropos, a new film body/body of film.

  7. Proceedings of the twenty-first workshop on geothermal reservoir engineering

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-31

    This document contains the Proceedings of the Twenty-first Workshop in Geothermal Reservoir Engineering, held at Stanford University, Stanford, California, USA, January 22-24, 1996. Sixty-six papers were presented in the technical sessions of the workshop. Technical papers were organized into twenty sessions including: reservoir assessment, modeling, geology/geochemistry, fracture modeling/hot-dry-rock, low enthalpy, fluid injection, well testing, drilling, adsorption, and well stimulation.

  8. Automation and robotics for Space Station in the twenty-first century

    Science.gov (United States)

    Willshire, K. F.; Pivirotto, D. L.

    1986-01-01

    Space Station telerobotics will evolve beyond the initial capability into a smarter and more capable system as we enter the twenty-first century. Current technology programs including several proposed ground and flight experiments to enable development of this system are described. Advancements in the areas of machine vision, smart sensors, advanced control architecture, manipulator joint design, end effector design, and artificial intelligence will provide increasingly more autonomous telerobotic systems.

  9. Twenty-First Century Europe: Emergence of Baltic States into European Alliances

    Science.gov (United States)

    2003-04-07

    sources of power supply. Estonia is the only country in the world where oil shale is the primary source of energy, supplying over 75 percent of its total...Unclassified The contributions of Estonia , Latvia, and Lithuania ("the Baltic States") to the North Atlantic Treaty Organization (NATO), the European...23 vi TWENTY-FIRST CENTURY EUROPE: EMERGENCE OF THE BALTIC STATES INTO EUROPEAN ALLIANCES BACKGROUND Estonia , Latvia, and Lithuania are often

  10. Twenty-first century Arctic climate change in the CCSM3 IPCC scenario simulations

    Energy Technology Data Exchange (ETDEWEB)

    Teng, Haiyan; Washington, Warren M.; Meehl, Gerald A.; Buja, Lawrence E.; Strand, Gary W. [National Center for Atmospheric Research, Boulder, CO (United States)

    2006-05-15

    Arctic climate change in the Twenty-first century is simulated by the Community Climate System Model version 3.0 (CCSM3). The simulations from three emission scenarios (A2, A1B and B1) are analyzed using eight (A1B and B1) or five (A2) ensemble members. The model simulates a reasonable present-day climate and historical climate trend. The model projects a decline of sea-ice extent in the range of 1.4-3.9% per decade and 4.8-22.2% per decade in winter and summer, respectively, corresponding to the range of forcings that span the scenarios. At the end of the Twenty-first century, the winter and summer Arctic mean surface air temperature increases in a range of 4-14 C (B1 and A2) and 0.7-5 C (B1 and A2) relative to the end of the Twentieth century. The Arctic becomes ice-free during summer at the end of the Twenty-first century in the A2 scenario. Similar to the observations, the Arctic Oscillation (AO) is the dominant factor in explaining the variability of the atmosphere and sea ice in the 1870-1999 historical runs. The AO shifts to the positive phase in response to greenhouse gas forcings in the Twenty-first century. But the simulated trends in both Arctic mean sea-level pressure and the AO index are smaller than what has been observed. The Twenty-first century Arctic warming mainly results from the radiative forcing of greenhouse gases. The 1st empirical orthogonal function (explains 72.2-51.7% of the total variance) of the wintertime surface air temperature during 1870-2099 is characterized by a strong warming trend and a ''polar amplification''-type of spatial pattern. The AO, which plays a secondary role, contributes to less than 10% of the total variance in both surface temperature and sea-ice concentration. (orig.)

  11. Twenty first century climatic and hydrological changes over Upper Indus Basin of Himalayan region of Pakistan

    Science.gov (United States)

    Ali, Shaukat; Li, Dan; Congbin, Fu; Khan, Firdos

    2015-01-01

    This study is based on both the recent and the predicted twenty first century climatic and hydrological changes over the mountainous Upper Indus Basin (UIB), which are influenced by snow and glacier melting. Conformal-Cubic Atmospheric Model (CCAM) data for the periods 1976-2005, 2006-2035, 2041-2070, and 2071-2100 with RCP4.5 and RCP8.5; and Regional Climate Model (RegCM) data for the periods of 2041-2050 and 2071-2080 with RCP8.5 are used for climatic projection and, after bias correction, the same data are used as an input to the University of British Columbia (UBC) hydrological model for river flow projections. The projections of all of the future periods were compared with the results of 1976-2005 and with each other. Projections of future changes show a consistent increase in air temperature and precipitation. However, temperature and precipitation increase is relatively slow during 2071-2100 in contrast with 2041-2070. Northern parts are more likely to experience an increase in precipitation and temperature in comparison to the southern parts. A higher increase in temperature is projected during spring and winter over southern parts and during summer over northern parts. Moreover, the increase in minimum temperature is larger in both scenarios for all future periods. Future river flow is projected by both models to increase in the twenty first century (CCAM and RegCM) in both scenarios. However, the rate of increase is larger during the first half while it is relatively small in the second half of the twenty first century in RCP4.5. The possible reason for high river flow during the first half of the twenty first century is the large increase in temperature, which may cause faster melting of snow, while in the last half of the century there is a decreasing trend in river flow, precipitation, and temperature (2071-2100) in comparison to 2041-2070 for RCP4.5. Generally, for all future periods, the percentage of increased river flow is larger in winter than in

  12. 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...

  13. 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...

  14. Establishing the R&D agenda for twenty-first century learning.

    Science.gov (United States)

    Kay, Ken; Honey, Margaret

    2006-01-01

    An infusion of twenty-first century skills into American public education necessitates a plan for research and development to further such reform. While the nation agrees that students must obtain critical thinking, problem-solving, and communication skills to succeed in the current global marketplace, this chapter puts forth a long-term, proactive agenda to invest in targeted research to propel and sustain this shift in education. The authors examine the impact such an R&D agenda would have on pedagogy and assessment and the implications for institutions of higher education. As the United States struggles to maintain dominance in the international economy, it faces a great challenge in keeping up with European and Asian competitors' strategies for preparing youth for the global marketplace. The authors hope the global reality will help contextualize the debate around American education--the current trend toward basics and accountability needs to be broadened. Building on frameworks created by the Partnership for 21st Century Skills, this chapter proposes questions to guide research around teaching, professional development, and assessment significant to twenty-first century skills. Knowing that educational change depends on providing teachers with the tools, support, and training to make fundamental changes in their practice, the authors argue for extensive research around best practices. In addition, if assessments are created to measure the desired outcomes, such measuring tools can drive reform. Furthermore, large-scale changes in teacher preparation programs must take place to allow teachers to adequately employ twenty-first century teaching and assessment strategies.

  15. Why American business demands twenty-first century skills: an industry perspective.

    Science.gov (United States)

    Bruett, Karen

    2006-01-01

    Public education is the key to individual and business prosperity. With a vested stake in education, educators, employers, parents, policymakers, and the public should question how this nation's public education system is faring. Knowing that recent international assessments have shown little or no gains in American students' achievement, the author asserts the clear need for change. As both a large American corporate employer and a provider of technology for schools, Dell is concerned with ensuring that youth will thrive in their adult lives. Changing workplace expectations lead to a new list of skills students will need to acquire before completing their schooling. Through technology, Dell supports schools in meeting educational goals, striving to supply students with the necessary skills, referred to as twenty-first century skills. The Partnership for 21st Century Skills, of which Dell is a member, has led an initiative to define what twenty-first century learning should entail. Through extensive research, the partnership has built a framework outlining twenty-first century skills: analytical thinking, communication, collaboration, global awareness, and technological and economic literacy. Dell and the partnership are working state by state to promote the integration of these skills into curricula, professional development for teachers, and classroom environments. The authors describe two current initiatives, one in Virginia, the other in Texas, which both use technology to help student learning. All stakeholders can take part in preparing young people to compete in the global economy. Educators and administrators, legislators, parents, and employers must play their role in helping students be ready for what the workforce and the world has in store for them.

  16. Managing the twenty-first century reference department challenges and prospects

    CERN Document Server

    Katz, Linda S

    2014-01-01

    Learn the skills needed to update and manage a reference department that efficiently meets the needs of clients today?and tomorrow! Managing the Twenty-First Century Reference Department: Challenges and Prospects provides librarians with the knowledge and skills they need to manage an effective reference service. Full of useful and practical ideas, this book presents successful methods for recruiting and retaining capable reference department staff and management, training new employees and adapting current services to an evolving field. Expert practitioners address the changing role of the r

  17. Digital images and art libraries in the twenty-first century

    CERN Document Server

    Wyngaard, Susan

    2013-01-01

    Increase your knowledge of the digital technology that is essential for art librarianship today! Digital Images and Art Libraries in the Twenty-First Century is your key to cutting-edge discourse on digital image databases and art libraries. Just as early photographers tried to capture the world to make it accessible, now information professionals in art libraries and art museums are creating and sharing digital collections to make them broadly accessible. This collection shares the experience and insight of art information managers who have taken advantage of digital technology to exp

  18. Mid-Twentieth Century Modern Dance in the Twenty-first Century

    OpenAIRE

    Puleio, Dante

    2017-01-01

    Mid-Twentieth Century Modern Dance in the Twenty-First CenturyThe relevance of modern dance being performed today has been a growing topic in the dance field as legacy companies age and the field of contemporary dance continues to expand. This thesis begins with critical response to mid-century modern dance in the work of well-known dance critics John Martin, Edwin Denby and Louis Horst and how they substantiated modern dance’s place in dance history. My interviews with dance critics Alastair...

  19. Authority in the Virtual Sangat : Sikhism, Ritual and Identity in the Twenty-First Century

    OpenAIRE

    Jakobsh, Doris R.

    2006-01-01

    In her paper Authority in the Virtual Sanga. Sikhism, Ritual and Identity in the Twenty-First Century, Doris Jakobsh analyses the change of authority based on her research on Sikhs on the Internet. She stresses the Web as a ‘third place’ of communication among the Sikhs as well as the phenomenon of new authorities online. However, this does not imply the replacement of the traditional seats of authority, the Akal Takht, SGPC, or gurdwara managements, but one can recognize a significant shift ...

  20. A perspective of dental education in the twenty-first century.

    Science.gov (United States)

    Allen, D L; Finnegan, W N

    1989-04-01

    With the beginning of the twenty-first century only twelve years away, it is clearly not too early for dental educators to be planning for it. If one compares the practice of dentistry and the nature of dental education in 1888 with that of 1988, and then tries to project what they will be like in the year 2088, we have a difficult task indeed. As Alvin Toffler has pointed out in his book Future Shock, we are in an ever escalating period of change. Dentistry and dental education will change much more in the next one hundred years than they have in the last one hundred years.

  1. The economics of urologic practice in the twenty-first century.

    Science.gov (United States)

    Holtgrewe, H L

    1998-02-01

    Our nation's health care has been undergoing an economic revolution. The practice of urology has not escaped. Speculation regarding the economics of urologic practice in the twenty-first century must be based on the continuation of policy trends begun over the last decade by government and managed care coupled with the impact of changes in the science of urology, shifting population demographics, and changing social factors. The hallmarks of the years ahead include increased physician accountability, expanded use of clinical care guidelines, continued relentless penetration of managed care, and reduced reimbursement for surgical services.

  2. Rethinking Individual Authorship: Robert Burns, Oral Tradition, and the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Ruth Knezevich

    2011-10-01

    Full Text Available The songs of late-eighteenth-century Scottish poet Robert Burns provide a rich case study of literature that challenges existing notions of the author as an autonomous entity. Responding to twenty-first-century examples of contested issues of intellectual property and plagiarism in an age of digital media, this project illustrates the ways in which precepts of oral tradition can inform our thinking about cultural production within contexts seemingly permeated by ever-present literacy or text-based thinking in order to provide a new outlook on such situations of artistic borrowing or “plagiarism.”

  3. Bits, Bytes and Dinosaurs: Using Levinas and Freire to Address the Concept of "Twenty-First Century Learning"

    Science.gov (United States)

    Benade, Leon

    2015-01-01

    The discourse of twenty-first century learning argues that education should prepare students for successful living in the twenty-first century workplace and society. It challenges all educators with the idea that contemporary education is unable to do so, as it is designed to replicate an industrial age model, essentially rear-focused, rather than…

  4. 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...

  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. Secondary battery which flaps in the twenty-first century; 21seiki ni habataku nijidenchi

    Energy Technology Data Exchange (ETDEWEB)

    Takehara, Z. [kansai University, Osaka (Japan)

    1999-12-25

    The development of a secondary battery of large safety and high-power high energy density will be advanced in the twenty-first century, while both sides in environment and resources are considered. The high tension battery will be advantageous, and the development of this battery will be promoted mainly by the lithium secondary battery. The battery which uses manganese system compounds for cathode active material was used in the early time practically, and in addition, it will develop to the ferrous compounds. In the electrolyte, the metallic lithium is used in negative electrode active materials, and an organic polymer thin film including an ion cluster which is active in the nonaqueous solvent will be developed. The secondary battery which has only a power generation function at the inside of a container and has active material at the outside of the container is suitable for large-sized and large-capacity secondary batteries. The battery of this conformer of which belongs the redox, flow battery which possesses active material in liquid electrolyte and the fuel cell using a gas active material. The development of the lithium secondary battery using the new material will be promoted competitively with the development of the fuel cell and the redox, flow battery, etc., when the field where the application of the battery expanded in the twenty-first century was considered. (NEDO)

  7. Twenty-first century changes in snowfall climate in Northern Europe in ENSEMBLES regional climate models

    Science.gov (United States)

    Räisänen, Jouni

    2016-01-01

    Changes in snowfall in northern Europe (55-71°N, 5-35°E) are analysed from 12 regional model simulations of twenty-first century climate under the Special Report on Emissions Scenarios A1B scenario. As an ensemble mean, the models suggest a decrease in the winter total snowfall in nearly all of northern Europe. In the middle of the winter, however, snowfall generally increases in the coldest areas. The borderline between increasing and decreasing snowfall broadly coincides with the -11 °C isotherm in baseline (1980-2010) monthly mean temperature, although with variation between models and grid boxes. High extremes of daily snowfall remain nearly unchanged, except for decreases in the mildest areas, where snowfall as a whole becomes much less common. A smaller fraction of the snow in the simulated late twenty-first century climate falls on severely cold days and a larger fraction on days with near-zero temperatures. Not only do days with low temperatures become less common, but they also typically have more positive anomalies of sea level pressure and less snowfall for the same temperature than in the present-day climate.

  8. 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...

  9. Toward a Social Psychology of Race and Race Relations for the Twenty-First Century.

    Science.gov (United States)

    Richeson, Jennifer A; Sommers, Samuel R

    2016-01-01

    The United States, like many nations, continues to experience rapid growth in its racial minority population and is projected to attain so-called majority-minority status by 2050. Along with these demographic changes, staggering racial disparities persist in health, wealth, and overall well-being. In this article, we review the social psychological literature on race and race relations, beginning with the seemingly simple question: What is race? Drawing on research from different fields, we forward a model of race as dynamic, malleable, and socially constructed, shifting across time, place, perceiver, and target. We then use classic theoretical perspectives on intergroup relations to frame and then consider new questions regarding contemporary racial dynamics. We next consider research on racial diversity, focusing on its effects during interpersonal encounters and for groups. We close by highlighting emerging topics that should top the research agenda for the social psychology of race and race relations in the twenty-first century.

  10. Globalisation and Social Imaginaries: The Changing Ideological Landscape of the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Manfred B. Steger

    2009-01-01

    Full Text Available The proliferation of prefixes like ‘neo’ and ‘post’ that adorn conventional ‘isms’ has cast a long shadow on the contemporary relevance of traditional political belief systems like liberalism, conservatism, and Marxism. This article explores how the thickening of global consciousness finds its expression in the growing capability of today’s political ideologies to translate the rising global imaginary into concrete political programs and agendas. But these subjective dynamics of denationalization at the heart of globalisation have not yet dispensed with the declining national imaginary. The twenty-first century promises to be an ideational interregnum in which both the global and national stimulate people’s deep-seated understandings of community. The essay also offers a rough outline and basic features of a new classification scheme that divides contemporary political ideologies into ‘market globalism’, ‘justice globalism’, and ‘religious globalism’.

  11. Space Science in the Twenty-First Century: Imperatives for the Decades 1995 to 2015. Overview

    Science.gov (United States)

    1988-01-01

    The opportunities for space science in the period from 1995 to 2015 are discussed. A perspective on progress in the six disciplines (the planet Earth; planetary and lunar exploration; solar system space physics; astronomy and astrophysics; fundamental physics and chemistry; and life sciences) of space science are reviewed. The prospectives for major achievements by 1995 from missions already underway or awaiting new starts are included. A set of long range goals for these disciplines are presented for the first two decades of the twenty-first century. Broad themes for future scientific pursuits are presented and some examples of high-priority missions for the turn of the century are highlighted. A few recommendations are cited for each discipline to suggest how these themes might be developed.

  12. A Farewell to Innocence? African Youth and Violence in the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Charles Ugochukwu Ukeje

    2012-12-01

    Full Text Available This is a broad examination of the issue of youth violence in twenty-first-century Africa, looking at the context within which a youth culture of violence has evolved and attempting to understand the underlining discourses of hegemony and power that drive it. The article focuses specifically on youth violence as apolitical response to the dynamics of (disempowerment, exclusion, and economic crisis and uses (postconflict states like Liberia, Sierra Leone, and Nigeriato explain not just the overall challenge of youth violence but also the nature of responses that it has elicited from established structures of authority. Youth violence is in many ways an expression of youth agency in the context of a social and economic system that provides little opportunity.

  13. Global threats from invasive alien species in the twenty-first century and national response capacities

    Science.gov (United States)

    Early, Regan; Bradley, Bethany A.; Dukes, Jeffrey S.; Lawler, Joshua J.; Olden, Julian D.; Blumenthal, Dana M.; Gonzalez, Patrick; Grosholz, Edwin D.; Ibañez, Ines; Miller, Luke P.; Sorte, Cascade J. B.; Tatem, Andrew J.

    2016-01-01

    Invasive alien species (IAS) threaten human livelihoods and biodiversity globally. Increasing globalization facilitates IAS arrival, and environmental changes, including climate change, facilitate IAS establishment. Here we provide the first global, spatial analysis of the terrestrial threat from IAS in light of twenty-first century globalization and environmental change, and evaluate national capacities to prevent and manage species invasions. We find that one-sixth of the global land surface is highly vulnerable to invasion, including substantial areas in developing economies and biodiversity hotspots. The dominant invasion vectors differ between high-income countries (imports, particularly of plants and pets) and low-income countries (air travel). Uniting data on the causes of introduction and establishment can improve early-warning and eradication schemes. Most countries have limited capacity to act against invasions. In particular, we reveal a clear need for proactive invasion strategies in areas with high poverty levels, high biodiversity and low historical levels of invasion. PMID:27549569

  14. Little Dorrit’s Fourth Volume. Twenty-first Century Remediation of a Victorian Classic

    Directory of Open Access Journals (Sweden)

    Simonetta Falchi

    2014-11-01

    Full Text Available The current interest in the Victorian period is particularly evident in the multitude of successful period dramas and cinema productions deriving their inspiration from Victorian history and culture. Dickens’s Little Dorrit, generated by the difficulties of understanding a ‘new’ world dominated by more and more complicated machines, and markets, is possibly the ideal paradigm to explore this ‘Victorianomania’ because this novel strikes us “no less forcefully today in its indictment of society's ability to destroy through greed and crushing self-interest” (Kirschner 2009.This study carries out a threefold analysis of Little Dorrit's remediation in the twenty-first century: visual remediation – Xue’s 2012 Little Dorrit; audio-visual remediation – the BBC series; and web remediation – fan fiction – in order to investigate Dickens’s appeal and longevity in contemporary media.

  15. Global threats from invasive alien species in the twenty-first century and national response capacities.

    Science.gov (United States)

    Early, Regan; Bradley, Bethany A; Dukes, Jeffrey S; Lawler, Joshua J; Olden, Julian D; Blumenthal, Dana M; Gonzalez, Patrick; Grosholz, Edwin D; Ibañez, Ines; Miller, Luke P; Sorte, Cascade J B; Tatem, Andrew J

    2016-08-23

    Invasive alien species (IAS) threaten human livelihoods and biodiversity globally. Increasing globalization facilitates IAS arrival, and environmental changes, including climate change, facilitate IAS establishment. Here we provide the first global, spatial analysis of the terrestrial threat from IAS in light of twenty-first century globalization and environmental change, and evaluate national capacities to prevent and manage species invasions. We find that one-sixth of the global land surface is highly vulnerable to invasion, including substantial areas in developing economies and biodiversity hotspots. The dominant invasion vectors differ between high-income countries (imports, particularly of plants and pets) and low-income countries (air travel). Uniting data on the causes of introduction and establishment can improve early-warning and eradication schemes. Most countries have limited capacity to act against invasions. In particular, we reveal a clear need for proactive invasion strategies in areas with high poverty levels, high biodiversity and low historical levels of invasion.

  16. The Worldwide Significance of Chinese Aesthetics in the Twenty-First Century

    Institute of Scientific and Technical Information of China (English)

    Liu Qingping

    2006-01-01

    Through comparisons between traditional Chinese and Western aesthetics,this article tries to explain the worldwide significance of Chinese aesthetic tradition in the twentyfirst century.In contrast to cognitive-rational spirit and the tendency to distinguish the subjectives and objectives of traditional Western aesthetics,traditional Chinese aesthetics shows a distinctive practical-emotional spirit and a tendency to harmoniously unite human beings with nature,and believes that beauty is,first and foremost,a free state or way (Dao) of human life;the most important thing for human beings is how to make their own lives and existence beautiful.Therefore,it puts forward some persuasive and valuable insights into beauty and art,thus playing an independent and constructive role in intercultural aesthetic dialogues of the twenty-first century.

  17. Why the twenty-first century tropical Pacific trend pattern cannot significantly influence ENSO amplitude?

    Science.gov (United States)

    An, Soon-Il; Choi, Jung

    2015-01-01

    Although the climate is highly expected to change due to global warming, it is unclear whether the El Nino-Southern Oscillation (ENSO) will be more or less active in the future. One may argue that this uncertainty is due to the intrinsic uncertainties in current climate models or the strong natural long-term modulation of ENSO. Here, we propose that the global warming trend cannot significantly modify ENSO amplitude due to weak feedback between the global warming induced tropical climate change and ENSO. By analyzing Coupled Model Intercomparison Project Phase 5 and observation data, we found that the zonal dipole pattern of sea surface temperature [SST; warming in the eastern Pacific and cooling in the western Pacific or vice versa; `Pacific zonal mode' (PZM)] is highly correlated to change in ENSO amplitude. Additionally, this PZM is commonly identified in control experiments (pre-industrial conditions), twentieth century observations, and twenty-first century scenario experiments [representative concentration pathways 4.5 and 8.5 W m-2 (RCP 4.5, 8.5)]. PZM provides favorable conditions for the intensification of ENSO by strengthening air-sea coupling and modifying ENSO pattern. On the other hand, the twenty-first century SST trend pattern, which is different from PZM, is not favorable towards changing ENSO amplitude. Furthermore, we performed an intermediate ocean-atmosphere coupled model simulations, in which the SST trend pattern and PZM are imposed as an external anomalous heat flux or prescribed as a basic state. It was concluded that the SST trend pattern forcing insignificantly changes ENSO amplitude, and the PZM forcing intensifies ENSO amplitude.

  18. 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.

  19. Mediterranean Sea response to climate change in an ensemble of twenty first century scenarios

    Science.gov (United States)

    Adloff, Fanny; Somot, Samuel; Sevault, Florence; Jordà, Gabriel; Aznar, Roland; Déqué, Michel; Herrmann, Marine; Marcos, Marta; Dubois, Clotilde; Padorno, Elena; Alvarez-Fanjul, Enrique; Gomis, Damià

    2015-11-01

    The Mediterranean climate is expected to become warmer and drier during the twenty-first century. Mediterranean Sea response to climate change could be modulated by the choice of the socio-economic scenario as well as the choice of the boundary conditions mainly the Atlantic hydrography, the river runoff and the atmospheric fluxes. To assess and quantify the sensitivity of the Mediterranean Sea to the twenty-first century climate change, a set of numerical experiments was carried out with the regional ocean model NEMOMED8 set up for the Mediterranean Sea. The model is forced by air-sea fluxes derived from the regional climate model ARPEGE-Climate at a 50-km horizontal resolution. Historical simulations representing the climate of the period 1961-2000 were run to obtain a reference state. From this baseline, various sensitivity experiments were performed for the period 2001-2099, following different socio-economic scenarios based on the Special Report on Emissions Scenarios. For the A2 scenario, the main three boundary forcings (river runoff, near-Atlantic water hydrography and air-sea fluxes) were changed one by one to better identify the role of each forcing in the way the ocean responds to climate change. In two additional simulations (A1B, B1), the scenario is changed, allowing to quantify the socio-economic uncertainty. Our 6-member scenario simulations display a warming and saltening of the Mediterranean. For the 2070-2099 period compared to 1961-1990, the sea surface temperature anomalies range from +1.73 to +2.97 °C and the SSS anomalies spread from +0.48 to +0.89. In most of the cases, we found that the future Mediterranean thermohaline circulation (MTHC) tends to reach a situation similar to the eastern Mediterranean Transient. However, this response is varying depending on the chosen boundary conditions and socio-economic scenarios. Our numerical experiments suggest that the choice of the near-Atlantic surface water evolution, which is very uncertain in

  20. New and newer[The New Physics for the Twenty-First Century

    Energy Technology Data Exchange (ETDEWEB)

    Clark, C. [Electron and Optical Physics Division, National Institute of Standards and Technology, MD (United States)]. E-mail: clark@mail.nist.gov

    2006-09-15

    Stephen Hawking's inaugural lecture as Lucasian Professor of Mathematics at Cambridge University in 1980 caused quite a stir. Its title - 'Is the end in sight for theoretical physics?' - raised the prospect of a unified 'theory of everything'. Hawking suggested that there was a good chance of resolving the remaining inconsistencies between the two big 'theories of something' - quantum mechanics and general relativity - before the turn of the century. My first impression on reading The New Physics for the Twenty-First Century, a collection of essays edited by science journalist Gordon Fraser, is that a theory of everything may still be attainable by the turn of the century. However, there is now 20 times more of everything in the universe than there was in the past century, 95% of which no-one has ever actually seen, or had even heard of until a few years ago - as summarized in articles by Wendy Freedman, Edward Kolb and Ronald Adler. Despite this, Michael Green describes amazing developments in string theory that could tie everything together, if one could just figure out which, if any, of the apparently infinite varieties of string theory applies to our world, and why. (U.K.)

  1. Divergent trajectories of Antarctic surface melt under two twenty-first-century climate scenarios

    Science.gov (United States)

    Trusel, Luke D.; Frey, Karen E.; Das, Sarah B.; Karnauskas, Kristopher B.; Kuipers Munneke, Peter; van Meijgaard, Erik; van den Broeke, Michiel R.

    2015-12-01

    Ice shelves modulate Antarctic contributions to sea-level rise and thereby represent a critical, climate-sensitive interface between the Antarctic ice sheet and the global ocean. Following rapid atmospheric warming over the past decades, Antarctic Peninsula ice shelves have progressively retreated, at times catastrophically. This decay supports hypotheses of thermal limits of viability for ice shelves via surface melt forcing. Here we use a polar-adapted regional climate model and satellite observations to quantify the nonlinear relationship between surface melting and summer air temperature. Combining observations and multimodel simulations, we examine melt evolution and intensification before observed ice shelf collapse on the Antarctic Peninsula. We then assess the twenty-first-century evolution of surface melt across Antarctica under intermediate and high emissions climate scenarios. Our projections reveal a scenario-independent doubling of Antarctic-wide melt by 2050. Between 2050 and 2100, however, significant divergence in melt occurs between the two climate scenarios. Under the high emissions pathway by 2100, melt on several ice shelves approaches or surpasses intensities that have historically been associated with ice shelf collapse, at least on the northeast Antarctic Peninsula.

  2. Indication to Open Anatrophic Nephrolithotomy in the Twenty-First Century: A Case Report

    Directory of Open Access Journals (Sweden)

    Alfredo Maria Bove

    2012-01-01

    Full Text Available Introduction. Advances in endourology have greatly reduced indications to open surgery in the treatment of staghorn kidney stones. Nevertheless in our experience, open surgery still represents the treatment of choice in rare cases. Case Report. A 71-year-old morbidly obese female patient complaining about occasional left flank pain, and recurrent cystitis for many years, presented bilateral staghorn kidney stones. Comorbidities were obesity (BMI 36.2, hypertension, type II diabetes, and chronic obstructive pulmunary disease (COPD hyperlipidemia. Due to these comorbidities, endoscopic and laparoscopic approaches were not indicated. We offered the patient staged open anatrophic nephrolithotomy. Results. Operative time was 180 minutes. Blood loss was 500 cc. requiring one unit of packed red blood cells. Hospital stay was 7 days. The renal function was unaffected based on preoperative and postoperative serum creatinine levels. Stone-free status of the left kidney was confirmed after surgery with CT scan. Conclusions. Open surgery can represent a valid alterative in the treatment of staghorn kidney stones of very selected cases. A discussion of the current indications in the twenty-first century is presented.

  3. Ukrainian Issues in Geopolitical thought of the Twentieth and Twenty-First Centuries

    Directory of Open Access Journals (Sweden)

    Reginia-Zacharski Jacek

    2016-12-01

    Full Text Available Ukrainian lands in the twentieth and twenty-first centuries have been in proximity of great geopolitical changes several times. During that time the Ukrainian nation – due to various factors – encountered a number of “windows of opportunity” for achieving the realization of dreams about independence and national sovereignty. The author identified in the period considered four “general moments,” of which two have been completed successfully. The first of these occurred in 1990–1991, when for the first time in modern history, Ukrainians managed to achieve a lasting and relatively stable independence. The second of the “moments” – still unresolved – are events that began in the late autumn of 2013. The process, called “Revolution of Dignity”, represents a new quality in the history of the Ukrainian nation, therefore, that the Ukrainians have to defend the status quo (independence, territorial integrity, sovereignty, etc. but not to seek to achieve an independent being. The analysis leads to the conclusion that the ability of Ukrainians to achieve and maintain independence is largely a function of the relative power of the Russian state as measured with respect to the shape and quality of international relations.

  4. Projected deglaciation of western Canada in the twenty-first century

    Science.gov (United States)

    Clarke, Garry K. C.; Jarosch, Alexander H.; Anslow, Faron S.; Radić, Valentina; Menounos, Brian

    2015-05-01

    Retreat of mountain glaciers is a significant contributor to sea-level rise and a potential threat to human populations through impacts on water availability and regional hydrology. Like most of Earth’s mountain glaciers, those in western North America are experiencing rapid mass loss. Projections of future large-scale mass change are based on surface mass balance models that are open to criticism, because they ignore or greatly simplify glacier physics. Here we use a high-resolution regional glaciation model, developed by coupling physics-based ice dynamics with a surface mass balance model, to project the fate of glaciers in western Canada. We use twenty-first-century climate scenarios from an ensemble of global climate models in our simulations; the results indicate that by 2100, the volume of glacier ice in western Canada will shrink by 70 +/- 10% relative to 2005. According to our simulations, few glaciers will remain in the Interior and Rockies regions, but maritime glaciers, in particular those in northwestern British Columbia, will survive in a diminished state. We project the maximum rate of ice volume loss, corresponding to peak input of deglacial meltwater to streams and rivers, to occur around 2020-2040. Potential implications include impacts on aquatic ecosystems, agriculture, forestry, alpine tourism and water quality.

  5. Emerging Tick-Borne Viruses in the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Karen L. Mansfield

    2017-07-01

    Full Text Available Ticks, as a group, are second only to mosquitoes as vectors of pathogens to humans and are the primary vector for pathogens of livestock, companion animals, and wildlife. The role of ticks in the transmission of viruses has been known for over 100 years and yet new pathogenic viruses are still being detected and known viruses are continually spreading to new geographic locations. Partly as a result of their novelty, tick-virus interactions are at an early stage in understanding. For some viruses, even the principal tick-vector is not known. It is likely that tick-borne viruses will continue to emerge and challenge public and veterinary health long into the twenty-first century. However, studies focusing on tick saliva, a critical component of tick feeding, virus transmission, and a target for control of ticks and tick-borne diseases, point toward solutions to emerging viruses. The aim of this review is to describe some currently emerging tick-borne diseases, their causative viruses, and to discuss research on virus-tick interactions. Through focus on this area, future protein targets for intervention and vaccine development may be identified.

  6. Effects of long-term variability on projections of twenty-first century dynamic sea level

    Science.gov (United States)

    Bordbar, Mohammad H.; Martin, Thomas; Latif, Mojib; Park, Wonsun

    2015-04-01

    Sea-level rise is one of the most pressing aspects of anthropogenic global warming with far-reaching consequences for coastal societies. However, sea-level rise did and will strongly vary from coast to coast. Here we investigate the long-term internal variability effects on centennial projections of dynamic sea level (DSL), the local departure from the globally averaged sea level. A large ensemble of global warming integrations has been conducted with a climate model, where each realization was forced by identical CO2 increase but started from different atmospheric and oceanic initial conditions. In large parts of the mid- and high latitudes, the ensemble spread of the projected centennial DSL trends is of the same order of magnitude as the globally averaged steric sea-level rise, suggesting that internal variability cannot be ignored when assessing twenty-first-century DSL trends. The ensemble spread is considerably reduced in the mid- to high latitudes when only the atmospheric initial conditions differ while keeping the oceanic initial state identical; indicating that centennial DSL projections are strongly dependent on ocean initial conditions.

  7. The Third Revolution: Philosophy into Practice in Twenty-first Century Psychiatry

    Directory of Open Access Journals (Sweden)

    KWM (Bill Fulford

    2008-12-01

    Full Text Available Three revolutions in psychiatry characterised the closing decade of the twentieth century: 1 in the neurosciences, 2 in patient-centred models of service delivery, and 3 in the emergence of a rapidly expanding new cross-disciplinary field of philosophy and psychiatry. Starting with a case history, the paper illustrates the impact of this third revolution - the new philosophy of psychiatry - on day-to-day clinical practice through training programmes and policy developments in what has become known as values-based practice. Derived from philosophical value theory and phenomenology, values-based practice is a partner to evidence-based practice in supporting clinical decision-making in the highly complex environment of mental health care. The paper concludes by setting values-based practice in context with other potentially practical important areas of the new philosophy of psychiatry arguing that all three revolutions need to be brought together if psychiatry is to meet the challenges of the twenty-first century.

  8. Waving or Drowning? Perceptions of Second Wave Feminism Through a Twenty-First Century Lens

    OpenAIRE

    Bralesford, Helen Margaret

    2006-01-01

    This dissertation sets out to explore some twenty-first century perceptions of second wave feminism with as little mediation from the academy as possible by employing the lens of popular culture to tease out and examine some of the assumptions about the second wave that have become culturally embedded at a grass roots level. The first chapter takes Betty Friedan���������������¢��������������������������������s seminal text The Feminine Mysti...

  9. Civil engineering at the crossroads in the twenty-first century.

    Science.gov (United States)

    Ramírez, Francisco; Seco, Andres

    2012-12-01

    The twenty-first century presents a major challenge for civil engineering. The magnitude and future importance of some of the problems perceived by society are directly related to the field of the civil engineer, implying an inescapable burden of responsibility for a group whose technical soundness, rational approach and efficiency is highly valued and respected by the citizen. However, the substantial changes in society and in the way it perceives the problems that it considers important call for a thorough review of our structures, both professional and educational; so that our profession, with its undeniable historical prestige, may modernize certain approaches and attitudes in order to continue to be a reliable instrument in the service of society, giving priority from an ethical standpoint to its actions in pursuit of "the public good". It possesses important tools to facilitate this work (new technologies, the development of communications, the transmission of scientific thought.···); but there is nevertheless a need for deep reflection on the very essence of civil engineering: what we want it to be in the future, and the ability and willingness to take the lead at a time when society needs disinterested messages, technically supported, reasonably presented and dispassionately transmitted.

  10. Projections of glacier change in the Altai Mountains under twenty-first century climate scenarios

    Science.gov (United States)

    Zhang, Yong; Enomoto, Hiroyuki; Ohata, Tetsuo; Kitabata, Hideyuki; Kadota, Tsutomu; Hirabayashi, Yukiko

    2016-11-01

    We project glacier surface mass balances of the Altai Mountains over the period 2006-2100 for the representative concentration pathway (RCP) 4.5 and RCP8.5 scenarios using daily near-surface air temperature and precipitation from 12 global climate models in combination with a surface mass balance model. The results indicate that the Altai glaciers will undergo sustained mass loss throughout the 21st for both RCPs and reveal the future fate of glaciers of different sizes. By 2100, glacier area in the region will shrink by 26 ± 10 % for RCP4.5, while it will shrink by 60 ± 15 % for RCP8.5. According to our simulations, most disappearing glaciers are located in the western part of the Altai Mountains. For RCP4.5, all glaciers disappearing in the twenty-first century have a present-day size smaller than 5.0 km2, while for RCP8.5, an additional 7 % of glaciers in the initial size class of 5.0-10.0 km2 also vanish. We project different trends in the total meltwater discharge of the region for the two RCPs, which does not peak before 2100, with important consequences for regional water availability, particular for the semi-arid and arid regions. This further highlights the potential implications of change in the Altai glaciers on regional hydrology and environment.

  11. Santiago: Modernisation, segregation and urban identities in the twenty first century

    Directory of Open Access Journals (Sweden)

    Francisca Márquez

    2011-01-01

    Full Text Available This paper discusses research carried out in Santiago, Chile, and addresses the origin and construction of urban identities in this segregated city of the twenty first century. Based on sociological and ethnographic evidence, urban identity building processes are analysed by observing the occupation, use and appropriation of territory. The hypothesis is that, despite evidence of segregation, modernisation and globalisation, urban people reinvent lifestyles within their territories in order to harmonise their bonds of affection and belonging by using distinguishing markings or “brands” and by adopting typical everyday habits. The modern, segregated and global city is filled with “islands” that convey imagery and desires for a friendlier urban life. This paper analyses areas with community identities, neo community identities and border identities. It suggests that, just as community identities shelter nostalgia for a lost community (by finding refuge or reinventing ways to make the fringes of the city habitable in the background or on the “other side��� of the Mapocho River and very near the historical centre of the city, border identities have also arisen and persisted; these subvert the orderly and hegemonic city, resulting in a diverse, heterogeneous and multicultural lifestyle. The result is a synthesis and an urban lifestyle.

  12. Waving or Drowning? Perceptions of Second Wave Feminism Through a Twenty-First Century Lens

    OpenAIRE

    Bralesford, Helen Margaret

    2006-01-01

    This dissertation sets out to explore some twenty-first century perceptions of second wave feminism with as little mediation from the academy as possible by employing the lens of popular culture to tease out and examine some of the assumptions about the second wave that have become culturally embedded at a grass roots level. The first chapter takes Betty Friedan���������������¢��������������������������������s seminal text The Feminine Mysti...

  13. Projections of glacier change in the Altai Mountains under twenty-first century climate scenarios

    Science.gov (United States)

    Zhang, Yong; Enomoto, Hiroyuki; Ohata, Tetsuo; Kitabata, Hideyuki; Kadota, Tsutomu; Hirabayashi, Yukiko

    2016-01-01

    We project glacier surface mass balances of the Altai Mountains over the period 2006-2100 for the representative concentration pathway (RCP) 4.5 and RCP8.5 scenarios using daily near-surface air temperature and precipitation from 12 global climate models in combination with a surface mass balance model. The results indicate that the Altai glaciers will undergo sustained mass loss throughout the 21st for both RCPs and reveal the future fate of glaciers of different sizes. By 2100, glacier area in the region will shrink by 26 ± 10 % for RCP4.5, while it will shrink by 60 ± 15 % for RCP8.5. According to our simulations, most disappearing glaciers are located in the western part of the Altai Mountains. For RCP4.5, all glaciers disappearing in the twenty-first century have a present-day size smaller than 5.0 km2, while for RCP8.5, an additional ~7 % of glaciers in the initial size class of 5.0-10.0 km2 also vanish. We project different trends in the total meltwater discharge of the region for the two RCPs, which does not peak before 2100, with important consequences for regional water availability, particular for the semi-arid and arid regions. This further highlights the potential implications of change in the Altai glaciers on regional hydrology and environment.

  14. Diasporic Reparations: Repairing the Social Imaginaries of Central America in the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Ana Patricia Rodríguez

    2013-06-01

    Full Text Available Contemporary Central American diasporic writers like Horacio Castellanos Moya, Francisco Goldman, Héctor Tobar, and Marcos McPeek Villatoro, in Senselessness (2008, The Art of Political Murder: Who Killed the Bishop? (2007, The Tattooed Soldier (1998, and the Romilia Chacón detective series, write in response to various forms of violence. They grapple with the image of Central America as a site of unsustainable violence, inhospitable material conditions, and unresolved historical issues that extend into the lives of Central Americans in the United States. The past is not easily dismissed, but lies at the core of transnational Central American subject formation. This essay examines how violence and impunity are closely tied in Central American diasporic texts and hold cognitive relevancy for Central Americans in and outside of the isthmus. While US Central Americans seek to understand the origins and conditions of their diaspora, writers reflect critically on Central American historiography, diaspora, and the construction of transnational “Centroamericanidades” in the twenty-first century. These writers engage in a literature of reparation that reveals the (impossibility of repairing and re-writing or righting the past in societies where violence and impunity have been institutionalized.

  15. Between vanguard and exclusion- young people of the twenty-first century

    Directory of Open Access Journals (Sweden)

    Agnieszka Gil

    2011-12-01

    Full Text Available This study has been narrowed down to reveal a paradox. Here the vanguard of culture and civilization - which is regarded as young people of the twenty-first century – is embroiled in a discourse of exclusion: economic, political and cultural life. In secondary school programs and high schools we do not find specific references and studies, primarily based on the needs of students, about the theory of popular culture and cultural education in the area of pop culture. The paradox of exclusion of mainstream culture from educational discourse is schizophrenic. The political exclusion of young people of the XXI century I consider all the disparaging scientific discourse, which skips the actual media and communication competence of young people. Prosumers, cognitarchy, digital natives, C-generation – they are for the modern economy “Silicon Valley” - their market power to exclude is already unstoppable. In other areas it remains to be considered whether excluding young people from the cultural discourse will not deprive our future teachers and translators of the next civilization revolution of social reality...

  16. Christian-Muslim Relations in Indonesia: Five Challenges of the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Ibrahim Abu Rabi

    2014-03-01

    Full Text Available This paper - inspired by the "International Conference on Muslim-Christian Relations: Past, Present, and Future Dialogue and Cooperation", in Jakarta, August 1997 - discussed the challenges of Indonesia in relation to Christian-Muslim relations into the century 21.In August 1997, a major conference on Christian-Muslim relations and the challenges of religious plulalism in contemporary Indonesia was convenced at the Horison Hotel in Jakarta, Indonesia. Copyright (c 2014 by SDI. All right reserved.DOI: 10.15408/sdi.v5i1.758

  17. Investigating the pace of temperature change and its implications over the twenty-first century

    Science.gov (United States)

    Chavaillaz, Y.; Joussaume, S.; Braconnot, P.; Vautard, R.

    2015-12-01

    In most studies, climate change is approached by focusing on the evolution between a fixed current baseline and the future, emphasizing stronger warming as we move further from the current climate. Under climate conditions that are continuously evolving, human systems might have to constantly adapt to a changing target. We propose here an alternative approach, and consider indicators of the pace of temperature change and its effects on temperature distributions estimated from projections of an ensemble of 18 General Circulation Models. The pace is represented by a rate defined by the difference between two subsequent 20-year periods. Under the strongest emission pathway (RCP 8.5), the warming rate strongly increases over the twenty-first century, with a maximum reached before 2080. Whilst northern high-latitudes witness the highest temperature rise, all other latitudes highlight at least a doubling in the warming rate compared to the current period. The spatial extent of significant shifts in annual temperature distributions between two subsequent 20-year periods is projected to be at least four times larger than in the current period. They are mainly located in tropical areas, such as West Africa and South-East Asia. The fraction of the world population exposed to these shifts grows from 8% to 60% from around 2060 onwards, i.e. reaching 6 billions people. In contrast, low mitigation measures (RCP 6.0) are sufficient to keep the warming rate similar to current values. Under the medium mitigation pathway (RCP 4.5), population exposure to significant shifts drops to negligible values by the end of the century. Strong mitigation measures (RCP 2.6) are the only option that generates a global return to historical conditions regarding our indicators. Considering the pace of change can bring an alternative way to interact with climate impacts and adaptation communities.

  18. Latvian Security and Defense Policy within the Twenty-First Century Security Environment

    Directory of Open Access Journals (Sweden)

    Rublovskis Raimonds

    2014-12-01

    Full Text Available The aim of this paper is to analyze fundamental factors which form and profoundly shape security and defense policy of the Republic of Latvia. One can argue that historical background, geographical location, common institutional history within the former Soviet Union, the Russia factor, the relative smallness of the territory of state and the population, the ethnic composition of the population, the low density of the population and rather limited financial and manpower resources available for the defense of the Republic of Latvia are the key factors of influence on the state security and defense policy. The core principles of the security and defense policy of Latvia are the membership in powerful global military alliance of NATO and bilateral strategic partnership with the United States. However, security and defense cooperation among the three Baltic States as well as enhanced cooperation within the Baltic-Nordic framework is seen as an important supplementary factor for the increased security of the Republic of Latvia. Latvia has developed a sustainable legal and institutional framework in order to contribute to state security and defense; however, security challenges and significant changes within the global security environment of the twenty-first century will further challenge the ability of the Republic of Latvia to sustain its current legal framework, and more importantly, current institutional structure of Latvian security and defense architecture. Significant internal and external challenges will impact the fundamental pillars of Latvian security and defense policy, such as American strategic shift to the Pacific, and lack of political will to increase defense budgets in European part of NATO. It has to be clear that very independence, security and defense of the Republic of Latvia depend on the ability of NATO to remain an effective organization with timely and efficient decision-making, and the ability of the United States to remain

  19. On the twenty-first-century wet season projections over the Southeastern United States

    Science.gov (United States)

    Selman, Christopher; Misra, Vasu; Stefanova, Lydia; Dinapoli, Steven; Smith, Thomas J.

    2013-01-01

    This paper reconciles the difference in the projections of the wet season over the Southeastern United States (SEUS) from a global climate model (the Community Climate System Model Version 3 [CCSM3]) and from a regional climate model (the Regional Spectral Model [RSM]) nested in the CCSM3. The CCSM3 projects a dipole in the summer precipitation anomaly: peninsular Florida dries in the future climate, and the remainder of the SEUS region becomes wetter. The RSM forced with CCSM3 projects a universal drying of the SEUS in the late twenty-first century relative to the corresponding twentieth-century summer. The CCSM3 pattern is attributed to the “upped-ante” mechanism, whereby the atmospheric boundary layer moisture required for convection increases in a warm, statically stable global tropical environment. This criterion becomes harder to meet along convective margins, which include peninsular Florida, resulting in its drying. CCSM3 also projects a southwestward expansion of the North Atlantic subtropical high that leads to further stabilizing of the atmosphere above Florida, inhibiting convection. The RSM, because of its high (10-km grid) resolution, simulates diurnal variations in summer rainfall over SEUS reasonably well. The RSM improves upon CCSM3 through the RSM’s depiction of the diurnal variance of precipitation, which according to observations accounts for up to 40 % of total seasonal precipitation variance. In the future climate, the RSM projects a significant reduction in the diurnal variability of convection. The reduction is attributed to large-scale stabilization of the atmosphere in the CCSM3 projections.

  20. Yeast culture collections in the twenty-first century: new opportunities and challenges.

    Science.gov (United States)

    Boundy-Mills, Kyria L; Glantschnig, Ewald; Roberts, Ian N; Yurkov, Andrey; Casaregola, Serge; Daniel, Heide-Marie; Groenewald, Marizeth; Turchetti, Benedetta

    2016-07-01

    The twenty-first century has brought new opportunities and challenges to yeast culture collections, whether they are long-standing or recently established. Basic functions such as archiving, characterizing and distributing yeasts continue, but with expanded responsibilities and emerging opportunities. In addition to a number of well-known, large public repositories, there are dozens of smaller public collections that differ in the range of species and strains preserved, field of emphasis and services offered. Several collections have converted their catalogues to comprehensive databases and synchronize them continuously through public services, making it easier for users worldwide to locate a suitable source for specific yeast strains and the data associated with these yeasts. In-house research such as yeast taxonomy continues to be important at culture collections. Because yeast culture collections preserve a broad diversity of species and strains within a species, they are able to make discoveries in many other areas as well, such as biotechnology, functional, comparative and evolution genomics, bioprocesses and novel products. Due to the implementation of the Convention of Biological Diversity (CBD) and the Nagoya Protocol (NP), there are new requirements for both depositors and users to ensure that yeasts were collected following proper procedures and to guarantee that the country of origin will be considered if benefits arise from a yeast's utilization. Intellectual property rights (IPRs) are extremely relevant to the current access and benefit-sharing (ABS) mechanisms; most research and development involving genetic resources and associated traditional knowledge will be subject to this topic. Copyright © 2016 John Wiley & Sons, Ltd.

  1. Fusion energy from the Moon for the twenty-first century

    Science.gov (United States)

    Kulcinski, G. L.; Cameron, E. N.; Santarius, J. F.; Sviatoslavsky, I. N.; Wittenberg, L. J.; Schmitt, Harrison H.

    1992-01-01

    It is shown in this paper that the D-He-3 fusion fuel cycle is not only credible from a physics standpoint, but that its breakeven and ignition characteristics could be developed on roughly the same time schedule as the DT cycle. It was also shown that the extremely low fraction of power in neutrons, the lack of significant radioactivity in the reactants, and the potential for very high conversion efficiencies, can result in definite advantages for the D-He-3 cycle with respect to DT fusion and fission reactors in the twenty-first century. More specifically, the D-He-3 cycle can accomplish the following: (1) eliminate the need for deep geologic waste burial facilities and the wastes can qualify for Class A, near-surface land burial; (2) allow 'inherently safe' reactors to be built that, under the worst conceivable accident, cannot cause a civilian fatality or result in a significant (greater than 100 mrem) exposure to a member of the public; (3) reduce the radiation damage levels to a point where no scheduled replacement of reactor structural components is required, i.e., full reactor lifetimes (approximately 30 FPY) can be credibly claimed; (4) increase the reliability and availability of fusion reactors compared to DT systems because of the greatly reduced radioactivity, the low neutron damage, and the elimination of T breeding; and (5) greatly reduce the capital costs of fusion power plants (compared to DT systems) by as much as 50 percent and present the potential for a significant reduction on the COE. The concepts presented in this paper tie together two of the most ambitious high-technology endeavors of the twentieth century: the development of controlled thermonuclear fusion for civilian power applications and the utilization of outer space for the benefit of mankind on Earth.

  2. Gendering inequality: a note on Piketty's Capital in the twenty-first century.

    Science.gov (United States)

    Perrons, Diane

    2014-12-01

    Thomas Piketty's Capital in the Twenty-First Century is remarkable for moving inequality from the margins to mainstream debate through detailed analysis of longitudinal statistics and, for an economist, by advocating an interdisciplinary perspective and writing in a witty and accessible style. With reference to the post 1970 period, when wage increases are largely responsible for the increase in inequality, Piketty shows how patrimonial capitalists (elite managers) in the top decile and centile of the distribution appropriate a growing share of social wealth as a consequence of their 'power to set their own remuneration' in the context of tolerant social norms rather than through their productive contributions. Piketty raises but defers the question of where these social norms come from to other disciplines. A Feminist Economics perspective indicates that these questions are central to a more inclusive form of economic analysis and such an approach would enrich Piketty's analysis in two main ways. First, by paying greater attention to the processes and social norms through which inequalities are produced and justified and second by highlighting the ways in which inequality is experienced differently depending not only on class, but also on other aspects of identity including gender. This approach also suggests that it is necessary to supplement the ex-post redistributive policies recommended by Piketty: a global wealth tax and more steeply progressive income tax, with ex-ante measures to stop the rise in wage inequality in the first place, especially by bridging the huge gulf that exists between those who care for people and those who manage money.

  3. Preparation of European Public Health Professionals in the Twenty-first Century

    Science.gov (United States)

    Bjegovic-Mikanovic, Vesna; Otok, Robert

    2017-01-01

    The public health profession in Europe has a leadership role for ensuring European’s health in the twenty-first century and therefore must assume responsibility for advancing education for research and practice. Three fundamental questions are explored: (1) What are the main public health problems facing public health professionals; (2) What are their existing competencies after training; and (3) What competencies do European employers expect? The European Schools of Public Health assessed their best success to be in the field of health promotion, followed by disease prevention including identification of priority health problems, and elimination of health hazards in the community. Conversely, they see the least success in dealing with preparedness and planning for public health emergencies. From an employer’s perspective, significant gaps between current and desired levels of performance at the job exist for all Essential Public Health Operations of World Health Organization. Based on prior research and recent European surveys of Schools and Departments of Public Health, the following recommendations are made, which emphasize the leadership role of the European public health community: (1) the preparation of public health professionals requires an interface between public health functions, competencies, and performance; (2) competence-based education is important and allows debates on the scope of the required education; (3) governments have to realize that the present lack of infrastructure and capacity is detrimental to the people’s health; (4) as public health challenges are increasingly global, educational institutions have to look beyond the national boundaries and participate in European and global networks for education, research, and practice. PMID:28261578

  4. New electricity 21. Designing a sustainable electric system for the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-31

    The five main sessions of the conference are opportunities to increase electricity use for sustainable development; electric system expansion and integration to meet growing competition; power producers and global climate change issues; technology for supplying electricity in developing and transitional economies; power industry structure, regulatory policies and technological innovation. All contributions have been indexed and abstracted for the INIS and Energy database. (R.P.)

  5. Twenty-first century science as a relational process: from eureka! to team science and a place for community psychology.

    Science.gov (United States)

    Tebes, Jacob Kraemer; Thai, Nghi D; Matlin, Samantha L

    2014-06-01

    In this paper we maintain that twenty-first century science is, fundamentally, a relational process in which knowledge is produced (or co-produced) through transactions among researchers or among researchers and public stakeholders. We offer an expanded perspective on the practice of twenty-first century science, the production of scientific knowledge, and what community psychology can contribute to these developments. We argue that: (1) trends in science show that research is increasingly being conducted in teams; (2) scientific teams, such as transdisciplinary teams of researchers or of researchers collaborating with various public stakeholders, are better able to address complex challenges; (3) transdisciplinary scientific teams are part of the larger, twenty-first century transformation in science; (4) the concept of heterarchy is a heuristic for team science aligned with this transformation; (5) a contemporary philosophy of science known as perspectivism provides an essential foundation to advance twenty-first century science; and (6) community psychology, through its core principles and practice competencies, offers theoretical and practical expertise for advancing team science and the transformation in science currently underway. We discuss the implications of these points and illustrate them briefly with two examples of transdisciplinary team science from our own work. We conclude that a new narrative is emerging for science in the twenty-first century that draws on interpersonal transactions in teams, and active engagement by researchers with the public to address critical accountabilities. Because of its core organizing principles and unique blend of expertise on the intersection of research and practice, community psychologists are well-prepared to help advance these developments, and thus have much to offer twenty-first century science.

  6. Proceedings: Twenty years of energy policy: Looking toward the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    1992-12-31

    In 1973, immediately following the Arab Oil Embargo, the Energy Resources Center, University of Illinois at Chicago initiated an innovative annual public service program called the Illinois Energy Conference. The objective was to provide a public forum each year to address an energy or environmental issue critical to the state, region and nation. Twenty years have passed since that inaugural program, and during that period we have covered a broad spectrum of issues including energy conservation nuclear power, Illinois coal, energy policy options, natural gas, alternative fuels, new energy technologies, utility deregulation and the National Energy Strategy.

  7. Projected seasonal mean summer monsoon over India and adjoining regions for the twenty-first century

    Science.gov (United States)

    Dash, Sushil K.; Mishra, Saroj K.; Pattnayak, Kanhu C.; Mamgain, Ashu; Mariotti, Laura; Coppola, Erika; Giorgi, Filippo; Giuliani, Graziano

    2015-11-01

    In this study, we present the projected seasonal mean summer monsoon over India and adjoining regions for the twenty-first century under the representative concentration pathway (RCP) 4.5 and RCP 8.5 scenarios using the regional model RegCM4 driven by the global model GFDL-ESM2M. RegCM4 is integrated from 1970 to 2099 at 50 km horizontal resolution over the South Asia CORDEX domain. The simulated mean summer monsoon circulation and associated rainfall by RegCM4 are validated against observations in the reference period 1975 to 2004 based on the Global Precipitation Climatology Project (GPCP) and India Meteorological Department (IMD) data sets. Regional model results are also compared with those of the global model GFDL which forces the RegCM4, showing that the regional model in particular improves the simulation of precipitation trends during the reference period. Future projections are categorized as near future (2010-2039), mid future (2040-2069), and far future (2070-2099). Comparison of projected seasonal (June-September) mean rainfall from the different time slices indicate a gradual increase in the intensity of changes over some of the regions under both the RCP4.5 and RCP8.5 scenarios. RegCM4 projected rainfall decreases over most of the Indian land mass and the equatorial and northern Indian Ocean, while it increases over the Arabian Sea, northern Bay of Bengal, and the Himalayas. Results show that the monsoon circulation may become weaker in the future associated with a decrease in rainfall over Indian land points. The RegCM4 projected decrease in June, July, August, September (JJAS) rainfall under the RCP8.5 scenario over the central, eastern, and peninsular India by the end of the century is in the range of 25-40 % of their mean reference period values; it is significant at the 95 % confidence level and it is broadly in line with patterns of observed change in recent decades. Surface evaporation is projected to increase over the Indian Ocean, thereby

  8. 78 FR 52605 - Announcing the Twenty First Public Meeting of the Crash Injury Research and Engineering Network...

    Science.gov (United States)

    2013-08-23

    .... Researchers can review data and share expertise, which may lead to a better understanding of crash injury... National Highway Traffic Safety Administration Announcing the Twenty First Public Meeting of the Crash... Meeting of members of the Crash Injury Research and Engineering Network. CIREN is a collaborative...

  9. Transformative Pedagogy, Leadership and School Organisation for the Twenty-First-Century Knowledge-Based Economy: The Case of Singapore

    Science.gov (United States)

    Dimmock, Clive; Goh, Jonathan W. P.

    2011-01-01

    Singapore has a high performing school system; its students top international tests in maths and science. Yet while the Singapore government cherishes its world class "brand", it realises that in a globally competitive world, its schools need to prepare students for the twenty-first-century knowledge-based economy (KBE). Accordingly,…

  10. Noise Management in Twenty-First Century Libraries: Case Studies of Four U.S. Academic Institutions

    Science.gov (United States)

    Franks, Janet E.; Asher, Darla C.

    2014-01-01

    University libraries have had to provide acceptable noise levels for many years and this pressure has not diminished in the twenty-first century. Library space has to be utilized to ensure noise levels are best managed. A study was undertaken across four university libraries in South Florida to determine how universities utilized their limited…

  11. Insights into Finnish First-Year Pre-Service Teachers' Twenty-First Century Skills

    Science.gov (United States)

    Valtonen, Teemu; Sointu, Erkko Tapio; Kukkonen, Jari; Häkkinen, Päivi; Järvelä, Sanna; Ahonen, Arto; Näykki, Piia; Pöysä-Tarhonen, Johanna; Mäkitalo-Siegl, Kati

    2017-01-01

    This study focuses on Finnish pre-service teachers' perceptions of their twenty-first century skills, especially their learning strategies, collaboration and teamwork, as well as knowledge and attitudes related to ICT in education. The target group consist of 263 first-year pre-service teachers from three universities. The results outline how…

  12. From School to Cafe and Back Again: Responding to the Learning Demands of the Twenty-First Century

    Science.gov (United States)

    McWilliam, Erica

    2011-01-01

    This paper traces the historical origins of formal and informal lifelong learning to argue that optimal twenty-first-century education can and should draw on the traditions of both the school and the coffee house or cafe. For some time now, educational policy documents and glossy school brochures have come wrapped in the mantle of lifelong…

  13. A Shift to Inquiry: The Heart of Effective Teaching and Professional Development for the Twenty-First Century

    Science.gov (United States)

    Bartolini, Vicki; Worth, Karen; Jensen LaConte, Judy E.

    2014-01-01

    This article explores how an experienced teacher navigates the demands of curriculum to implement her inquiry-centered teaching and learning philosophy, and how administrators along the way supported her during this change. Interviews with this classroom teacher surface suggestions for twenty-first-century professional development and support,…

  14. Towards regional projections of twenty-first century sea-level change based on IPCC SRES scenarios

    NARCIS (Netherlands)

    Slangen, A.B.A.; Katsman, C.A.; Van de Wal, R.S.W.; Vermeersen, L.L.A.; Riva, R,E.M.

    2012-01-01

    Sea-level change is often considered to be globally uniform in sea-level projections. However, local relative sea-level (RSL) change can deviate substantially from the global mean. Here, we present maps of twenty-first century local RSL change estimates based on an ensemble of coupled climate model

  15. Thinking Like Twenty-First Century Learners: An Exploration of Blog Use in a Skills-Based Counselor Education Course

    Science.gov (United States)

    Buono, Lisa L.

    2011-01-01

    Twenty-first century learners and millennial generation students have integrated technology into their personal lives; there is a growing expectation for technology to be integrated into their classroom experiences as well. Incorporating technology, including the use of blogs, into teaching and learning is receiving attention in the literature.…

  16. The Twenty-First Century and Legal Studies in Business: Preparing Students to Perform in a Globally Competitive Environment

    Science.gov (United States)

    Burke, Debra D.; Johnson, Ronald A.; Kemp, Deborah J.

    2010-01-01

    This article first examines the dynamic role business education must play in a flat world economy. Second, it explains how legal courses in the business curricula already equip students with portable twenty-first-century skills and relevant academic content. The article then advocates the acceptance of the Boyer Model of Scholarship, which defines…

  17. Teaching and Learning for the Twenty-First Century: Educational Goals, Policies, and Curricula from Six Nations

    Science.gov (United States)

    Reimers, Fernando M., Ed.; Chung, Connie K., Ed.

    2016-01-01

    This book describes how different nations have defined the core competencies and skills that young people will need in order to thrive in the twenty-first-century, and how those nations have fashioned educational policies and curricula meant to promote those skills. The book examines six countries--Chile, China, India, Mexico, Singapore, and the…

  18. Science Teacher Education in the Twenty-First Century: A Pedagogical Framework for Technology-Integrated Social Constructivism

    Science.gov (United States)

    Barak, Miri

    2017-01-01

    Changes in our global world have shifted the skill demands from acquisition of structured knowledge to mastery of skills, often referred to as twenty-first century competencies. Given these changes, a sequential explanatory mixed methods study was undertaken to (a) examine predominant instructional methods and technologies used by teacher…

  19. Pressure effects on regional mean sea level trends in the German Bight in the twenty-first century

    Science.gov (United States)

    Albrecht, Frauke; Weisse, Ralf

    2014-05-01

    The effect of large-scale atmospheric pressure changes on regional mean sea level projections in the German Bight in the twenty-first century are considered. A developed statistical model is applied to climate model data of sea level pressure for the twenty-first century to assess the potential contribution of large-scale atmospheric changes to future sea level changes in the German Bight. Using 78 experiments, an ensemble mean of 1.4-cm rise in regional mean sea level is estimated until the end of the twenty-first century. Changes are somewhat higher for realisations of the special report on emission scenarios (SRES) A1B and A2, but generally do not exceed a few centimeters. This is considerably smaller than the changes expected from steric and self-gravitational effects. Large-scale changes in sea level pressure are thus not expected to provide a substantial contribution to twenty-first century sea level changes in the German Bight.

  20. Impact of the Twenty-First Century Afterschool Program on Student Achievement in Mathematics and Language Arts

    Science.gov (United States)

    Venzen, Marc A.

    2011-01-01

    The purpose of this quantitative study was to examine the academic impacts of the Twenty-First Century Community Learning Centers on students who participated in this program. The following research questions guided the study: (a) are there significant differences between the Criterion Reference Competency Test English Language Arts scores of…

  1. Thinking Like Twenty-First Century Learners: An Exploration of Blog Use in a Skills-Based Counselor Education Course

    Science.gov (United States)

    Buono, Lisa L.

    2011-01-01

    Twenty-first century learners and millennial generation students have integrated technology into their personal lives; there is a growing expectation for technology to be integrated into their classroom experiences as well. Incorporating technology, including the use of blogs, into teaching and learning is receiving attention in the literature.…

  2. Essential Soft Skills for Success in the Twenty-First Century Workforce as Perceived by Business Educators

    Science.gov (United States)

    Mitchell, Geana W.; Skinner, Leane B.; White, Bonnie J.

    2010-01-01

    Background: Soft skills describe career attributes that individuals should possess, such as team skills, communication skills, ethics, time-management skills, and an appreciation for diversity. In the twenty-first century workforce, soft skills are important in every business sector. However, employers in business continuously report that new…

  3. Science Teacher Education in the Twenty-First Century: a Pedagogical Framework for Technology-Integrated Social Constructivism

    Science.gov (United States)

    Barak, Miri

    2016-01-01

    Changes in our global world have shifted the skill demands from acquisition of structured knowledge to mastery of skills, often referred to as twenty-first century competencies. Given these changes, a sequential explanatory mixed methods study was undertaken to (a) examine predominant instructional methods and technologies used by teacher educators, (b) identify attributes for learning and teaching in the twenty-first century, and (c) develop a pedagogical framework for promoting meaningful usage of advanced technologies. Quantitative and qualitative data were collected via an online survey, personal interviews, and written reflections with science teacher educators and student teachers. Findings indicated that teacher educators do not provide sufficient models for the promotion of reform-based practice via web 2.0 environments, such as Wikis, blogs, social networks, or other cloud technologies. Findings also indicated four attributes for teaching and learning in the twenty-first century: (a) adapting to frequent changes and uncertain situations, (b) collaborating and communicating in decentralized environments, (c) generating data and managing information, and (d) releasing control by encouraging exploration. Guided by social constructivist paradigms and twenty-first century teaching attributes, this study suggests a pedagogical framework for fostering meaningful usage of advanced technologies in science teacher education courses.

  4. A Model for Reform. Two-Year Colleges in the Twenty-First Century: Breaking Down Barriers (TYC21).

    Science.gov (United States)

    Palmer, James C., Ed.

    This book describes the TYC21 project (Two-Year Colleges in the Twenty-First Century: Breaking Down Barriers), which provided a framework to implement reform in science, engineering, and physics education at two-year colleges via the cooperative efforts of faculty in cross-educational activities. The project sought to increase the quality of…

  5. Transformative Pedagogy, Leadership and School Organisation for the Twenty-First-Century Knowledge-Based Economy: The Case of Singapore

    Science.gov (United States)

    Dimmock, Clive; Goh, Jonathan W. P.

    2011-01-01

    Singapore has a high performing school system; its students top international tests in maths and science. Yet while the Singapore government cherishes its world class "brand", it realises that in a globally competitive world, its schools need to prepare students for the twenty-first-century knowledge-based economy (KBE). Accordingly, over the past…

  6. Index to the Twenty-first Semiannual Report of the Commission to the Congress. July 1956 - December 1956

    Energy Technology Data Exchange (ETDEWEB)

    Strauss, Lewis L.

    1957-01-31

    This volume contains a name and subject indext for the twenty-first semiannual report of the United States Atomic Energy Commission to Congress. The full semiannual report covers the major unclassified activities of the Commission from July 1956 through December 1956.

  7. Predicting climate change impacts on native and invasive tree species using radial growth and twenty-first century climate scenarios

    NARCIS (Netherlands)

    González-Muñoz, N.; Linares, J.C.; Castro-Díez, P.; Sass-Klaassen, U.G.W.

    2014-01-01

    The climatic conditions predicted for the twenty-first century may aggravate the extent and impacts of plant invasions, by favouring those invaders more adapted to altered conditions or by hampering the native flora. We aim to predict the fate of native and invasive tree species in the oak forests o

  8. Science Teacher Education in the Twenty-First Century: a Pedagogical Framework for Technology-Integrated Social Constructivism

    Science.gov (United States)

    Barak, Miri

    2017-04-01

    Changes in our global world have shifted the skill demands from acquisition of structured knowledge to mastery of skills, often referred to as twenty-first century competencies. Given these changes, a sequential explanatory mixed methods study was undertaken to (a) examine predominant instructional methods and technologies used by teacher educators, (b) identify attributes for learning and teaching in the twenty-first century, and (c) develop a pedagogical framework for promoting meaningful usage of advanced technologies. Quantitative and qualitative data were collected via an online survey, personal interviews, and written reflections with science teacher educators and student teachers. Findings indicated that teacher educators do not provide sufficient models for the promotion of reform-based practice via web 2.0 environments, such as Wikis, blogs, social networks, or other cloud technologies. Findings also indicated four attributes for teaching and learning in the twenty-first century: (a) adapting to frequent changes and uncertain situations, (b) collaborating and communicating in decentralized environments, (c) generating data and managing information, and (d) releasing control by encouraging exploration. Guided by social constructivist paradigms and twenty-first century teaching attributes, this study suggests a pedagogical framework for fostering meaningful usage of advanced technologies in science teacher education courses.

  9. Predicting climate change impacts on native and invasive tree species using radial growth and twenty-first century climate scenarios

    NARCIS (Netherlands)

    González-Muñoz, N.; Linares, J.C.; Castro-Díez, P.; Sass-Klaassen, U.G.W.

    2014-01-01

    The climatic conditions predicted for the twenty-first century may aggravate the extent and impacts of plant invasions, by favouring those invaders more adapted to altered conditions or by hampering the native flora. We aim to predict the fate of native and invasive tree species in the oak forests

  10. From School to Cafe and Back Again: Responding to the Learning Demands of the Twenty-First Century

    Science.gov (United States)

    McWilliam, Erica

    2011-01-01

    This paper traces the historical origins of formal and informal lifelong learning to argue that optimal twenty-first-century education can and should draw on the traditions of both the school and the coffee house or cafe. For some time now, educational policy documents and glossy school brochures have come wrapped in the mantle of lifelong…

  11. 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).

  12. Engineers and maintenance managers in the Australian coal-mining industry: are we ready for the twenty-first century?

    Energy Technology Data Exchange (ETDEWEB)

    Clark, D. [Terotechnology Services Pty Ltd., Cessnock, NSW (Australia)

    2000-10-01

    Coal mines in the twenty-first century will require engineers to respond to arguably the greatest challenge in the history of the Australian coal industry. The article discusses the roles and skills, qualifications and experience required by mine maintenance managers. The author uses information he obtained from a survey in 1990, of perceptions of skills and experience required in maintenance managers and from an analysis, in 1996, of requirements of such personnel made from situations vacant advertisements. 4 refs., 1 tab.

  13. Twenty-first century learning in school systems: the case of the Metropolitan School District of Lawrence Township, Indianapolis, Indiana.

    Science.gov (United States)

    Capuano, Marcia; Knoderer, Troy

    2006-01-01

    To empower students with skills such as information and technological literacy, global awareness and cultural competence, self-direction, and sound reasoning, teachers must master these skills themselves. This chapter examines how the Digital Age Literacy Initiative of the Metropolitan School District of Lawrence Township in Indianapolis, Indiana, which is funded by the Lilly Endowment, incorporated twenty-first century learning through a systemic approach involving teacher training and the use of data. The authors explain the district's content, process, and context goals toward accomplishing its mission of empowering students with the necessary twenty-first century skills to succeed in the digital age. The district places a strong emphasis on professional development for teachers. To support the necessary teacher learning and therefore sustain the work of the initiative, the district has adopted action research, self-assessment, and an online professional development network. To support teachers in implementing new strategies, master teachers serve as digital age literacy coaches. The chapter discusses the initiative's focus on evidence of progress. Through a partnership with the Metiri Group of California, the district has built a range of assessments including online inventories and twenty-first century skill rubrics. For example, the Mankato Survey collected teacher and student data around access, ability, and use of technology in the classroom in 2001 and then in 2004. This research showed significant gains in some technologies across all grade levels and consistent gains in nearly all technologies for middle and high school students. As it moves into the next phase of implementing the Digital Age Literacy Initiative, the district embraces the systemic shifts in school culture necessary to institutionalize twenty-first century learning.

  14. Transnational Circulations of "Laban" Methods: Gender, Power Relations, and Negotiated Meanings in Early Twenty-First Century South Korea's Modernity

    OpenAIRE

    Hwang, Hye-Won

    2013-01-01

    This dissertation investigates western-developed "Laban" methods that middle-class Korean female Laban specialists transported to South Korea and, there, tactically adapted to South Korean contexts during the 1990s and the early twenty-first century. It particularly focuses on how these Korean women's repurposings of "Laban" methods intersect with conditions of global capitalism and specific South Korean cultural politics, job markets, and dance instruction and employment networks. I claim th...

  15. Analysis of the projected regional sea-ice changes in the Southern Ocean during the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Lefebvre, W.; Goosse, H. [Universite Catholique de Louvain, Institut d' Astronomie et de Geophysique Georges Lemaitre, Louvain-la-Neuve (Belgium)

    2008-01-15

    Using the set of simulations performed with atmosphere-ocean general circulation models (AOGCMs) for the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR4), the projected regional distribution of sea ice for the twenty-first century has been investigated. Averaged over all those model simulations, the current climate is reasonably well reproduced. However, this averaging procedure hides the errors from individual models. Over the twentieth century, the multimodel average simulates a larger sea-ice concentration decrease around the Antarctic Peninsula compared to other regions, which is in qualitative agreement with observations. This is likely related to the positive trend in the Southern Annular Mode (SAM) index over the twentieth century, in both observations and in the multimodel average. Despite the simulated positive future trend in SAM, such a regional feature around the Antarctic Peninsula is absent in the projected sea-ice change for the end of the twenty-first century. The maximum decrease is indeed located over the central Weddell Sea and the Amundsen-Bellingshausen Seas. In most models, changes in the oceanic currents could play a role in the regional distribution of the sea ice, especially in the Ross Sea, where stronger southward currents could be responsible for a smaller sea-ice decrease during the twenty-first century. Finally, changes in the mixed layer depth can be found in some models, inducing locally strong changes in the sea-ice concentration. (orig.)

  16. Climate Change driven evolution of hazards to Europe's transport infrastructure throughout the twenty-first century

    Science.gov (United States)

    Matulla, Christoph; Hollósi, Brigitta; Andre, Konrad; Gringinger, Julia; Chimani, Barbara; Namyslo, Joachim; Fuchs, Tobias; Auerbach, Markus; Herrmann, Carina; Sladek, Brigitte; Berghold, Heimo; Gschier, Roland; Eichinger-Vill, Eva

    2017-06-01

    Road authorities, freight, and logistic industries face a multitude of challenges in a world changing at an ever growing pace. While globalization, changes in technology, demography, and traffic, for instance, have received much attention over the bygone decades, climate change has not been treated with equal care until recently. However, since it has been recognized that climate change jeopardizes many business areas in transport, freight, and logistics, research programs investigating future threats have been initiated. One of these programs is the Conference of European Directors of Roads' (CEDR) Transnational Research Programme (TRP), which emerged about a decade ago from a cooperation between European National Road Authorities and the EU. This paper presents findings of a CEDR project called CliPDaR, which has been designed to answer questions from road authorities concerning climate-driven future threats to transport infrastructure. Pertaining results are based on two potential future socio-economic pathways of mankind (one strongly economically oriented "A2" and one more balanced scenario "A1B"), which are used to drive global climate models (GCMs) producing global and continental scale climate change projections. In order to achieve climate change projections, which are valid on regional scales, GCM projections are downscaled by regional climate models. Results shown here originate from research questions raised by European Road Authorities. They refer to future occurrence frequencies of severely cold winter seasons in Fennoscandia, to particularly hot summer seasons in the Iberian Peninsula and to changes in extreme weather phenomena triggering landslides and rutting in Central Europe. Future occurrence frequencies of extreme winter and summer conditions are investigated by empirical orthogonal function analyses of GCM projections driven with by A2 and A1B pathways. The analysis of future weather phenomena triggering landslides and rutting events requires

  17. 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...

  18. 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...

  19. 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...

  20. Twenty-first century skills for students: hands-on learning after school builds school and life success.

    Science.gov (United States)

    Cabral, Leide

    2006-01-01

    At the core of the movement for twenty-first century skills are students. The growing efforts to increase programs leveraging out-of-school time are focused on giving American youth everything they need to compete in this increasingly complex world. The author is one of many students who have been well served by initiatives imparting twenty-first century skills during after-school hours. Now a senior at Boston Latin School, the author has been helped along the way by Citizen Schools, an after-school education program focused on hands-on learning apprenticeships and homework help. While enrolled in the program as a middle school student, the author took part in projects that exemplified hands-on, inquiry-based learning that helped her develop twenty-first century skills. For example, along with dozens of other students, she advanced her data analysis skills by analyzing statistics about Boston Public high schools, which also helped her select and enroll in one of the city's premier exam schools. Also, she and her peers worked with corporate attorneys who served as writing coaches and whose expertise the author drew from in producing a published essay and greatly improving her writing skills. The author now finds that the public speaking, leadership, organizational, social, and management abilities she built through her participation in Citizen Schools are a great asset to her in high school. The confidence with which she tackles her responsibilities can also be traced back to her experiences in the program. As she looks toward college, the author reflects and realizes that being actively involved in a quality after-school program put her on track for a successful future.

  1. Twenty-first century probabilistic projections of precipitation over Ontario, Canada through a regional climate model ensemble

    Science.gov (United States)

    Wang, Xiuquan; Huang, Guohe; Liu, Jinliang

    2016-06-01

    In this study, probabilistic projections of precipitation for the Province of Ontario are developed through a regional climate model ensemble to help investigate how global warming would affect its local climate. The PRECIS regional climate modeling system is employed to perform ensemble simulations, driven by a set of boundary conditions from a HadCM3-based perturbed-physics ensemble. The PRECIS ensemble simulations are fed into a Bayesian hierarchical model to quantify uncertain factors affecting the resulting projections of precipitation and thus generate probabilistic precipitation changes at grid point scales. Following that, reliable precipitation projections throughout the twenty-first century are developed for the entire province by applying the probabilistic changes to the observed precipitation. The results show that the vast majority of cities in Ontario are likely to suffer positive changes in annual precipitation in 2030, 2050, and 2080 s in comparison to the baseline observations. This may suggest that the whole province is likely to gain more precipitation throughout the twenty-first century in response to global warming. The analyses on the projections of seasonal precipitation further demonstrate that the entire province is likely to receive more precipitation in winter, spring, and autumn throughout this century while summer precipitation is only likely to increase slightly in 2030 s and would decrease gradually afterwards. However, because the magnitude of projected decrease in summer precipitation is relatively small in comparison with the anticipated increases in other three seasons, the annual precipitation over Ontario is likely to suffer a progressive increase throughout the twenty-first century (by 7.0 % in 2030 s, 9.5 % in 2050 s, and 12.6 % in 2080 s). Besides, the degree of uncertainty for precipitation projections is analyzed. The results suggest that future changes in spring precipitation show higher degree of uncertainty than other

  2. Redesigning healthcare systems to meet the health challenges associated with climate change in the twenty-first century.

    Science.gov (United States)

    Phua, Kai-Lit

    2015-01-01

    In the twenty-first century, climate change is emerging as a significant threat to the health and well-being of the public through links to the following: extreme weather events, sea level rise, temperature-related illnesses, air pollution patterns, water security, food security, vector-borne infectious diseases, and mental health effects (as a result of extreme weather events and climate change-induced population displacement). This article discusses how national healthcare systems can be redesigned through changes in its components such as human resources, facilities and technology, health information system, and health policy to meet these challenges.

  3. 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

  4. Preparing Teacher-Students for Twenty-First-Century Learning Practices (PREP 21): A Framework for Enhancing Collaborative Problem-Solving and Strategic Learning Skills

    Science.gov (United States)

    Häkkinen, Päivi; Järvelä, Sanna; Mäkitalo-Siegl, Kati; Ahonen, Arto; Näykki, Piia; Valtonen, Teemu

    2017-01-01

    With regard to the growing interest in developing teacher education to match the twenty-first-century skills, while many assumptions have been made, there has been less theoretical elaboration and empirical research on this topic. The aim of this article is to present our pedagogical framework for the twenty-first-century learning practices in…

  5. Preparing Teacher-Students for Twenty-First-Century Learning Practices (PREP 21): A Framework for Enhancing Collaborative Problem-Solving and Strategic Learning Skills

    Science.gov (United States)

    Häkkinen, Päivi; Järvelä, Sanna; Mäkitalo-Siegl, Kati; Ahonen, Arto; Näykki, Piia; Valtonen, Teemu

    2017-01-01

    With regard to the growing interest in developing teacher education to match the twenty-first-century skills, while many assumptions have been made, there has been less theoretical elaboration and empirical research on this topic. The aim of this article is to present our pedagogical framework for the twenty-first-century learning practices in…

  6. Public Heath in Colonial and Post-Colonial Ghana: Lesson-Drawing for The Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Adu-Gyamfi, Samuel

    2017-06-01

    Full Text Available Public health in twenty-first century Ghana is mired with several issues ranging from the inadequacy of public health facilities, improper settlement planning, insanitary conditions, and the inadequacy of laws and their implementation. This situation compared to the colonial era is a direct contradiction. Development in the pre-colonial era to the colonial era sought to make the prevention of diseases a priority in the colonial administration. This was begun with the establishment of the health branch in 1909 as a response to the bubonic plague that was fast spreading in the colony. From here public health policies and strategies were enacted to help the diseases prevention cause. Various public health boards, the medical research institute or the laboratory branch, the waste management department, the use of preventive medicine and maintenance of good settlement planning and sanitation were public health measures in the colonial era. This research seeks to analyse the public health system in the colonial era so as to draw basic lessons for twenty-first century Ghana. Archival data and other secondary sources are reviewed and analysed to help draw these lessons. Richard Rose’s lesson-drawing approach was used to draw the lessons.

  7. A needs assessment for DOE`s packaging and transportation activities - a look into the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Pope, R. [Oak Ridge National Lab., TN (United States); Turi, G.; Brancato, R.; Blalock, L. [Department of Energy, Germantown, MD (United States); Merrill, O. [Scientific Applications International Corp., Gaithersburg, MD (United States)

    1995-12-31

    The U.S. Department of Energy (DOE) has performed a department-wide scoping of its packaging and transportation needs and has arrived at a projection of these needs for well into the twenty-first century. The assessment, known as the Transportation Needs Assessment (TNA) was initiated during August 1994 and completed in December 1994. The TNA will allow DOE to better prepare for changes in its transportation requirements in the future. The TNA focused on projected, quantified shipping needs based on forecasts of inventories of materials which will ultimately require transport by the DOE for storage, treatment and/or disposal. In addition, experts provided input on the growing needs throughout DOE resulting from changes in regulations, in DOE`s mission, and in the sociopolitical structure of the United States. Through the assessment, DOE`s transportation needs have been identified for a time period extending from the present through the first three decades of the twenty-first century. The needs assessment was accomplished in three phases: (1) defining current packaging, shipping, resource utilization, and methods of managing packaging and transportation activities; (2) establishing the inventory of materials which DOE will need to transport on into the next century and scenarios which project when, from where, and to where these materials will need to be transported; and (3) developing requirements and projected changes for DOE to accomplish the necessary transport safely and economically.

  8. Ocean heat transport into the Arctic in the twentieth and twenty-first century in EC-Earth

    Science.gov (United States)

    Koenigk, Torben; Brodeau, Laurent

    2014-06-01

    The ocean heat transport into the Arctic and the heat budget of the Barents Sea are analyzed in an ensemble of historical and future climate simulations performed with the global coupled climate model EC-Earth. The zonally integrated northward heat flux in the ocean at 70°N is strongly enhanced and compensates for a reduction of its atmospheric counterpart in the twenty first century. Although an increase in the northward heat transport occurs through all of Fram Strait, Canadian Archipelago, Bering Strait and Barents Sea Opening, it is the latter which dominates the increase in ocean heat transport into the Arctic. Increased temperature of the northward transported Atlantic water masses are the main reason for the enhancement of the ocean heat transport. The natural variability in the heat transport into the Barents Sea is caused to the same extent by variations in temperature and volume transport. Large ocean heat transports lead to reduced ice and higher atmospheric temperature in the Barents Sea area and are related to the positive phase of the North Atlantic Oscillation. The net ocean heat transport into the Barents Sea grows until about year 2050. Thereafter, both heat and volume fluxes out of the Barents Sea through the section between Franz Josef Land and Novaya Zemlya are strongly enhanced and compensate for all further increase in the inflow through the Barents Sea Opening. Most of the heat transported by the ocean into the Barents Sea is passed to the atmosphere and contributes to warming of the atmosphere and Arctic temperature amplification. Latent and sensible heat fluxes are enhanced. Net surface long-wave and solar radiation are enhanced upward and downward, respectively and are almost compensating each other. We find that the changes in the surface heat fluxes are mainly caused by the vanishing sea ice in the twenty first century. The increasing ocean heat transport leads to enhanced bottom ice melt and to an extension of the area with bottom ice

  9. Simulating changes in the leaf unfolding time of 20 plant species in China over the twenty-first century

    Science.gov (United States)

    Ge, Quansheng; Wang, Huanjiong; Dai, Junhu

    2014-05-01

    Recent shifts in phenology reflect the biological response to current climate change. Aiming to enhance our understanding of phenological responses to climate change, we developed, calibrated and validated spatio-temporal models of first leaf date (FLD) for 20 broadleaved deciduous plants in China. Using daily meteorological data from the Chinese Meteorological Administration and the Community Climate System Model, version 3 (CCSM3) created using three IPCC scenarios (A2, A1B and B1), we described the FLD time series of each species over the past 50 years, extrapolating from these results to simulate estimated FLD changes for each species during the twenty-first century. Model validation suggests that our spatio-temporal models can simulate FLD accurately with R 2 (explained variance) >0.60. Model simulations show that, from 1952 to 2007, the FLD in China advanced at a rate of -1.14 days decade-1 on average. Furthermore, changes in FLD showed noticeable variation between regions, with clearer advances observed in the north than in the south of the country. The model indicates that the advances in FLD observed from 1952-2007 in China will continue over the twenty-first century, although significant differences among species and different climate scenarios are expected. The average trend of FLD advance in China during the twenty-first century is modeled as being -1.92 days decade-1 under the A2 scenario, -1.10 days decade-1 under the A1B scenario and -0.74 days decade-1 under the B2 scenario. The spatial pattern of FLD change for the period 2011-2099 is modeled as being similar but showing some difference from patterns in the 1952-2007 period. At the interspecific level, early-leafing species were found to show a greater advance in FLD, while species with larger distributions tended to show a weaker advance in FLD. These simulated changes in phenology may have significant implications for plant distribution as well as ecosystem structure and function.

  10. Deconstructing adolescent same-sex attraction and sexual behavior in the twenty-first century: perspectives for the clinician.

    Science.gov (United States)

    Sison, Antonio C; Greydanus, Donald E

    2007-06-01

    The adolescent with same-sex attraction in the twenty-first century straddles ambivalent cultural and religious attitudes regarding gay, lesbian, bisexual, or transgender (GLBT) issues; rapid technologic advances that provide easy access to information on sex and sex partners; and the clinician's sensitivity about GLBT issues and his or her awareness of how adolescents can use technology for sex-seeking behavior. It is necessary to deconstruct these factors into defined frameworks. Three checklists, the Clinician's Framework Guide Questions for the GLBT Adolescent, Clinician Reaction to GLBT Issues Checklist, and Global GLBT Checklist for Biopsychosocial Risk Factors, may aid the clinician in acquiring an appreciation of the global dynamics between the gay adolescent, the clinician, and the impact of current social realities.

  11. End-Permian Mass Extinction in the Oceans: An Ancient Analog for the Twenty-First Century?

    Science.gov (United States)

    Payne, Jonathan L.; Clapham, Matthew E.

    2012-05-01

    The greatest loss of biodiversity in the history of animal life occurred at the end of the Permian Period (˜252 million years ago). This biotic catastrophe coincided with an interval of widespread ocean anoxia and the eruption of one of Earth's largest continental flood basalt provinces, the Siberian Traps. Volatile release from basaltic magma and sedimentary strata during emplacement of the Siberian Traps can account for most end-Permian paleontological and geochemical observations. Climate change and, perhaps, destruction of the ozone layer can explain extinctions on land, whereas changes in ocean oxygen levels, CO2, pH, and temperature can account for extinction selectivity across marine animals. These emerging insights from geology, geochemistry, and paleobiology suggest that the end-Permian extinction may serve as an important ancient analog for twenty-first century oceans.

  12. The Renaissance of Word-of-Mouth Marketing: A ‘New’ Standard in Twenty-First Century Marketing Management?!

    Directory of Open Access Journals (Sweden)

    Norbert H. Meiners

    2010-12-01

    Full Text Available In this paper the importance of word of mouth for marketing management in the twenty-first century will be discussed. After a short introduction, there will be a focus on the demarcations and problems of traditional marketing. Then, in the third section, word ofmouth (WOM and word-of-mouth marketing (WOMM as a ‘new’ standard in modern marketing are described. The fourth section broaches the importance of word of mouth and word-of-mouth marketing from the point of view of business and consumers, and then in the fifth section their importance for the Internet is considered. Finally, in section six evangelism marketing is discussed as the most effective form of word-of-mouth marketing. Section seven concludes the paper with a short summary. The paper focuses on scholarly articles andcurrent research so as to keep theory as close as possible to reality.

  13. Us, them, and others: reflections on Canadian multiculturalism and national identity at the turn of the twenty-first century.

    Science.gov (United States)

    Winter, Elke

    2014-05-01

    The John Porter Lecture at the annual meeting of the Canadian Sociological Association in Victoria 2013 draws upon my book Us, Them, and Others: Pluralism and National Identity in Diverse Societies. Incorporating the findings from an analysis of Canadian English-language newspaper discourses during the 1990s into a theoretical framework inspired by Weberian sociology, the book argues that pluralism is best understood as a dynamic set of triangular relations where the compromise between unequal groups--"us" and "others"--is rendered meaningful through the confrontation with real or imagined outsiders ("them"). The lecture summarizes the theoretical contribution and explains how multiculturalism became consolidated in dominant Canadian discourses in the late 1990s. The lecture then discusses changes to Canadian multicultural identity at the beginning of the twenty-first century.

  14. Long-term climate response to stabilized and overshoot anthropogenic forcings beyond the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Tsutsui, Junichi; Yoshida, Yoshikatsu; Kim, Dong-Hoon; Kitabata, Hideyuki; Nishizawa, Keiichi; Nakashiki, Norikazu; Maruyama, Koki [Central Research Institute of Electric Power Industry, Chiba (Japan)

    2007-02-15

    From multi-ensembles of climate simulations using the Community Climate System Model version 3, global climate changes have been investigated focusing on long-term responses to stabilized anthropogenic forcings. In addition to the standard forcing scenarios for the current international assessment, an overshoot scenario, where radiative forcings are decreased from one stabilized level to another, is also considered. The globally-averaged annual surface air temperature increases during the twenty-first century by 2.58 and 1.56 C for increased forcings under two future scenarios denoted by A1B and B1, respectively. These changes continue but at much slower rates in later centuries under forcings stabilized at year 2100. The overshoot scenario provides a different pathway to the lower B1 level by way of the greater A1B level. This scenario results in a surface climate similar to that in the B1 scenario within 100 years after the forcing reaches the B1 level. Contrasting to the surface changes, responses in the ocean are significantly delayed. It is estimated from the linear response theory that temperature changes under stabilized forcings to a final equilibrium state in the A1B (B1) scenario are factors of 0.3-0.4, 0.9, and 17 (0.3, 0.6, and 11) to changes during the twenty-first century, respectively, for three ocean layers of the surface to 100, 100-500, and 500 m to the bottom. Although responses in the lower ocean layers imply a nonlinear behavior, the ocean temperatures in the overshoot and B1 scenarios are likely to converge in their final equilibrium states. (orig.)

  15. Extension and intensification of the Meso-American mid-summer drought in the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Rauscher, Sara A.; Giorgi, Filippo [The Abdus Salam International Centre for Theoretical Physics, Earth System Physics Section, Trieste (Italy); Diffenbaugh, Noah S. [Purdue University, Purdue Climate Change Research Center and Department of Earth and Atmospheric Sciences, West Lafayette, IN (United States); Seth, Anji [University of Connecticut, Department of Geography, Storrs, CT (United States)

    2008-10-15

    Recent global-scale analyses of the CMIP3 model projections for the twenty-first century indicate a strong, coherent decreased precipitation response over Central America and the Intra-America Seas region. We explore this regional response and examine the models' skill in representing present-day climate over this region. For much of Central America, the annual cycle of precipitation is characterized by a rainy season that extends from May to October with a period of reduced precipitation in July and August called the mid-summer drought. A comparison of the climate of the twentieth century simulations (20c3m) with observations over the period 1961-1990 shows that nearly all models underestimate precipitation over Central America, due in part to an underestimation of sea surface temperatures over the tropical North Atlantic and an excessively smooth representation of regional topographical features. However, many of the models capture the mid-summer drought. Differences between the A1B scenario (2061-2090) and 20c3m (1961-1990) simulations show decreased precipitation in the future climate scenario, mostly in June and July, just before and during the onset of the mid-summer drought. We thus hypothesize that the simulated twenty-first century drying over Central America represents an early onset and intensification of the mid-summer drought. An analysis of circulation changes indicates that the westward expansion and intensification of the North Atlantic subtropical high associated with the mid-summer drought occurs earlier in the A1B simulations, along with stronger low-level easterlies. The eastern Pacific inter-tropical convergence zone is also located further southward in the scenario simulations. There are some indications that these changes could be forced by ENSO-like warming of the tropical eastern Pacific and increased land-ocean heating contrasts over the North American continent. (orig.)

  16. IEEE 1393 Spaceborne Fiber Optic Data Bus: A Standard Approach to On-Board Payload Data Handling Networks for the AIAA Space Technology Conference and Exposition "Partnering in the 21th Century"

    Science.gov (United States)

    Andrucyk, Dennis J.; Orlando, Fred J.; Chalfant, Charles H.

    1999-01-01

    The Spaceborne Fiber Optic Data Bus (SFODB) is the next generation in on-board data handling networks. It will do for high speed payloads what SAE 1773 has done for on-board command and telemetry systems. That is, it will significantly reduce the cost of payload development, integration and test through interface standardization. As defined in IEEE 1393, SFODB is a 1 Gb/s, fiber optic network specifically designed to support the real-time, on-board data handling requirements of remote sensing spacecraft. The network is highly reliable, fault tolerant, and capable of withstanding the rigors of launch and the harsh space environment. SFODB achieves this operational and environmental performance while maintaining the small size, light weight, and low power necessary for spaceborne applications. SFODB was developed jointly by DoD and NASA GSFC to meet the on-board data handling needs of Remote Sensing satellites. This jointly funded project produced a complete set of flight transmitters, receivers and protocol ASICS; a complete Development & Evaluation System; and, the IEEE 1393 standard.

  17. Estimates of herbicide use for the twenty-first through the fortieth most-used herbicides in the conterminous United States

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This coverage contains estimates of herbicide use for the twenty-first through the fortieth most-used herbicides in the conterminous United States as reported in...

  18. 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...

  19. 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...

  20. The Significance, for Readers in the Twenty-first Century, of the Character of Safie in Mary Shelley's Frankestein

    Directory of Open Access Journals (Sweden)

    Esther Katheu Mbithi

    2017-02-01

    Full Text Available The Significance, for Readers in the Twenty-first century, of the Character of Safie in Mary Shelley's Frankenstein. Abstract: This paper presents a critical look at one of the characters in Mary Shelley’s Frankenstein, Safie, through the lenses of a female African scholar in the twenty-first century. A close look at the narrative structure leads to the gradual peeling off of the first two layers, to the core of the narration. The paper looks keenly at a minor character in this core, in the light of feminist literary criticism and against the concept of globalisation. The analysis of the character of Safie, carried out in full consciousness of the fact that Frankenstein was written two hundred years ago, involves a look at the words used to describe her; comparison between her and other characters, particularly other female characters; as well as a general overview of her circumstances and how she reacts in response to them. Keywords: literature, English, Gothic, Romanticism, feminism, Frankestein. // El significado del personaje de Safie en Frankestein, de Mary Shelley, para los lectores del siglo XXI. Resumen: Este artículo estudia críticamente a Safie, uno de los personajes de Frankestein de Mary Shelley, desde la perspectiva de una investigadora africana. Un examen atento de la estructura narrativa de la novela permite despojarla de sus dos capas exteriores, para alcanzar el núcleo de la narración. Este trabajo examina un personaje secundario de este núcleo a la luz de la crítica literaria feminista y en contra del concepto de globalización. El análisis del personaje de Safie, realizado con plena conciencia del hecho de que Frankestein fue escrito hace doscientos años, exige el examen de los términos usados para describirla; la comparación entre ella y otros personajes, especialmente otros personajes femeninos; así como una contextualización de sus circunstancias y de cómo Safie reacciona ante ellas. Palabras clave

  1. Evolution and modulation of tropical heating from the last glacial maximum through the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Hoyos, Carlos D.; Webster, Peter J. [Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA (United States)

    2012-04-15

    Twentieth century observations show that during the last 50 years the sea-surface temperature (SST) of the tropical oceans has increased by {proportional_to}0.5 C and the area of SST >26.5 and 28 C (arbitrarily referred to as the oceanic warm pool: OWP) by 15 and 50% respectively in association with an increase in green house gas concentrations, with non-understood natural variability or a combination of both. Based on CMIP3 projections the OWP is projected to double during twenty-first century in a moderate CO{sub 2} forcing scenario (IPCC A1B scenario). However, during the observational period the area of positive atmospheric heating (referred to as the dynamic warm pool, DWP), has remained constant. The threshold SST (T{sub H}), which demarks the region of net heating and cooling, has increased from 26.6 C in the 1950s to 27.1 C in the last decade and it is projected to increase to {proportional_to}28.5 C by 2100. Based on climate model simulations, the area of the DWP is projected to remain constant during the twenty-first century. Analysis of the paleoclimate model intercomparison project (PMIP I and II) simulations for the Last Glacial maximum and the Mid-Holocene periods show a very similar behaviour, with a larger OWP in periods of elevated tropical SST, and an almost constant DWP associated with a varying T{sub H}. The constancy of the DWP area, despite shifts in the background SST, is shown to be the result of a near exact matching between increases in the integrated convective heating within the DWP and the integrated radiative cooling outside the DWP as SST changes. Although the area of the DWP remains constant, the total tropical atmospheric heating is a strong function of the SST. For example the net heating has increased by about 10% from 1950 to 2000 and it is projected to increase by a further 20% by 2100. Such changes must be compensated by a more vigorous atmospheric circulation, with growth in convective heating within the warm pool, and an

  2. An estimate of the effects of climate change on the rainfall of Mediterranean Spain by the late twenty first century

    Energy Technology Data Exchange (ETDEWEB)

    Sumner, G.N. [Centre for Geography, University of Wales, Lampeter, Ceredigion, Wales (United Kingdom); Romero, R.; Homar, V.; Ramis, C.; Alonso, S. [Departament de Fisica, Universitat de les Illes Balears, Palma de Mallorca (Spain); Zorita, E. [Institut fuer Gewaesserphysik GKSS, Geesthacht (Germany)

    2003-05-01

    Heading Abstract. The study uses a GCM (ECHAM-OPYC3) and the association between the atmospheric circulation at 925 and 500 hPa and the distribution of daily precipitation for Mediterranean Spain (from earlier analyses) to give estimates of the probable annual precipitation for the late twenty first century. A down-scaling technique is used which involves the matching of daily circulation output from the model for a sequence of years in the late twentieth century (1971-90) and for a corresponding period in the late twenty first century (2080-99) to derive probable regional atmospheric pattern (AP) frequencies for this latter period, and thence to estimate likely changes in annual precipitation. Model days are classified by searching for the closest analogue amongst 19 previously identified APs from an earlier study. Future annual precipitation distribution is derived using previously established relationships between circulation type and daily precipitation distribution. Predicted AP frequencies and precipitation amounts and distribution are compensated by comparing model output with ECMWF data for a decade (1984-93) within the 1971-90 sequence, so that the analysis also provides a verification of the performance of the model. In general the agreement between model output and actual AP frequencies is very good for the present day, though for this southerly region the model appears slightly to under-estimate the frequency of easterly type circulations, many of which yield some of the most significant autumn severe storm rainfalls along the Mediterranean coast. The model tends to over-estimate the frequency of westerly type situations. The study utilises a 'moving window' technique in an attempt to derive measures of inter-decadal variability within the two 20 year periods. This avoids use of data from outside the periods, which would incorporate changing AP frequencies during a period of sustained climate change. Quite pronounced changes in frequency are

  3. Projected Changes on the Global Surface Wave Drift Climate towards the END of the Twenty-First Century

    Science.gov (United States)

    Carrasco, Ana; Semedo, Alvaro; Behrens, Arno; Weisse, Ralf; Breivik, Øyvind; Saetra, Øyvind; Håkon Christensen, Kai

    2016-04-01

    The global wave-induced current (the Stokes Drift - SD) is an important feature of the ocean surface, with mean values close to 10 cm/s along the extra-tropical storm tracks in both hemispheres. Besides the horizontal displacement of large volumes of water the SD also plays an important role in the ocean mix-layer turbulence structure, particularly in stormy or high wind speed areas. The role of the wave-induced currents in the ocean mix-layer and in the sea surface temperature (SST) is currently a hot topic of air-sea interaction research, from forecast to climate ranges. The SD is mostly driven by wind sea waves and highly sensitive to changes in the overlaying wind speed and direction. The impact of climate change in the global wave-induced current climate will be presented. The wave model WAM has been forced by the global climate model (GCM) ECHAM5 wind speed (at 10 m height) and ice, for present-day and potential future climate conditions towards the end of the end of the twenty-first century, represented by the Intergovernmental Panel for Climate Change (IPCC) CMIP3 (Coupled Model Inter-comparison Project phase 3) A1B greenhouse gas emission scenario (usually referred to as a ''medium-high emissions'' scenario). Several wave parameters were stored as output in the WAM model simulations, including the wave spectra. The 6 hourly and 0.5°×0.5°, temporal and space resolution, wave spectra were used to compute the SD global climate of two 32-yr periods, representative of the end of the twentieth (1959-1990) and twenty-first (1969-2100) centuries. Comparisons of the present climate run with the ECMWF (European Centre for Medium-Range Weather Forecasts) ERA-40 reanalysis are used to assess the capability of the WAM-ECHAM5 runs to produce realistic SD results. This study is part of the WRCP-JCOMM COWCLIP (Coordinated Ocean Wave Climate Project) effort.

  4. The era of the wandering mind? Twenty-first century research on self-generated mental activity.

    Science.gov (United States)

    Callard, Felicity; Smallwood, Jonathan; Golchert, Johannes; Margulies, Daniel S

    2013-01-01

    The first decade of the twenty-first century was characterized by renewed scientific interest in self-generated mental activity (activity largely generated by the individual, rather than in direct response to experimenters' instructions or specific external sensory inputs). To understand this renewal of interest, we interrogated the peer-reviewed literature from 2003 to 2012 (i) to explore recent changes in use of terms for self-generated mental activity; (ii) to investigate changes in the topics on which mind wandering research, specifically, focuses; and (iii) to visualize co-citation communities amongst researchers working on self-generated mental activity. Our analyses demonstrated that there has been a dramatic increase in the term "mind wandering" from 2006, and a significant crossing-over of psychological investigations of mind wandering into cognitive neuroscience (particularly in relation to research on the default mode and default mode network). If our article concludes that this might, indeed, be the "era of the wandering mind," it also calls for more explicit reflection to be given by researchers in this field to the terms they use, the topics and brain regions they focus on, and the research literatures that they implicitly foreground or ignore.

  5. Twenty-first century projected summer mean climate in the Mediterranean interpreted through the monsoon-desert mechanism

    Science.gov (United States)

    Cherchi, Annalisa; Annamalai, H.; Masina, Simona; Navarra, Antonio; Alessandri, Andrea

    2016-10-01

    The term "monsoon-desert mechanism" indicates the relationship between the diabatic heating associated with the South Asian summer monsoon rainfall and the remote response in the western sub-tropics where long Rossby waves anchor strong descent with high subsidence. In CMIP5 twenty-first century climate scenarios, the precipitation over South Asia is projected to increase. This study investigates how this change could affect the summer climate projections in the Mediterranean region. In a linear framework the monsoon-desert mechanism in the context of climate change would imply that the change in subsidence over the Mediterranean should be strongly linked with the changes in South Asian monsoon precipitation. The steady-state solution from a linear model forced with CMIP5 model projected precipitation change over South Asia shows a broad region of descent in the Mediterranean, while the results from CMIP5 projections differ having increased descent mostly in the western sector but also decreased descent in parts of the eastern sector. Local changes in circulation, particularly the meridional wind, promote cold air advection that anchors the descent but the barotropic Rossby wave nature of the wind anomalies consisting of alternating northerlies/southerlies favors alternating descent/ascent locations. In fact, the local mid-tropospheric meridional wind changes have the strongest correlation with the regions where the difference in subsidence is largest. There decreased rainfall is mostly balanced by changes in moisture, omega and in the horizontal advection of moisture.

  6. The era of the wandering mind? Twenty-first century research on self-generated mental activity

    Directory of Open Access Journals (Sweden)

    Felicity eCallard

    2013-12-01

    Full Text Available The first decade of the twenty-first century was characterized by renewed scientific interest in self-generated mental activity (activity largely generated by the individual, rather than in response to experimenters’ instructions or specific external sensory inputs. To understand this renewal of interest, we interrogated the peer-reviewed literature from 2003–2012 (i to explore recent changes in use of terms for self-generated mental activity; (ii to investigate changes in the topics on which mind wandering research, specifically, focuses; and (iii to visualize co-citation communities amongst researchers working on self-generated mental activity. Our analyses demonstrated that there has been a dramatic increase in the term mind wandering, and a significant crossing-over of psychological investigations of mind wandering, specifically, into cognitive neuroscience. If this is, indeed, the ‘era of the wandering mind’, our paper calls for more explicit reflection to be given by mind wandering researchers to the terms they use, the topics and brain regions they focused on, and the research literatures that they implicitly foreground or ignore as not relevant.

  7. Dialogues with Tradition: Feminist-Queer Encounters in German Crime Stories at the Turn of the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Faye Stewart

    2011-01-01

    Full Text Available Pieke Biermann’s feminist crime collection Mit Zorn, Charme, und Methode (1992 and Lisa Kuppler’s gay and lesbian anthology Queer Crime (2002 engage in a common project, the rewriting of a popular genre to give voice to previously marginalized identities and perspectives. This article investigates the ways in which each volume negotiates the gendered conventions of crime fiction and its subcategories, feminist and queer crime. A comparative analysis of three mysteries from each collection demonstrates the converging and diverging tendencies of feminist and queer representation in turn-of-the-twenty-first century crime narratives. Feminist mysteries by Edith Kneifl, Birgit Rabisch, and Barbara Neuhaus shift generic conventions by aligning narrative perspectives with a feminist world view that destabilizes male-dominated structures through the intervention of a strong female figure who successfully closes the case. By contrast, queer mysteries by Thea Dorn, Ursula Steck, and Susanne Billig destabilize generic conventions and structures of identity altogether, highlighting misreadings and unsolved mysteries through parody, double entendre, and open endings.

  8. Semi-empirical versus process-based sea-level projections for the twenty-first century

    Science.gov (United States)

    Orlić, Mirko; Pasarić, Zoran

    2013-08-01

    Two dynamical methods are presently used to project sea-level changes during the next century. The process-based method relies on coupled atmosphere-ocean models to estimate the effects of thermal expansion and on sea-level models combined with certain empirical relationships to determine the influence of land-ice mass changes. The semi-empirical method uses various physically motivated relationships between temperature and sea level, with parameters determined from the data, to project total sea level. However, semi-empirical projections far exceed process-based projections. Here, we test the robustness of semi-empirical projections to the underlying assumptions about the inertial and equilibrium responses of sea level to temperature forcing and the impacts of groundwater depletion and dam retention during the twentieth century. Our results show that these projections are sensitive to the dynamics considered and the terrestrial-water corrections applied. For B1, which is a moderate climate-change scenario, the lowest semi-empirical projection of sea-level rise over the twenty-first century equals 62+/-14cm. The average value is substantially smaller than previously published semi-empirical projections and is therefore closer to the corresponding process-based values. The standard deviation is larger than the uncertainties of process-based estimates.

  9. Building Interdisciplinary Leadership Skills among Health Practitioners in the Twenty-First Century: An Innovative Training Model.

    Science.gov (United States)

    Negandhi, Preeti; Negandhi, Himanshu; Tiwari, Ritika; Sharma, Kavya; Zodpey, Sanjay P; Quazi, Zahiruddin; Gaidhane, Abhay; Jayalakshmi N; Gijare, Meenakshi; Yeravdekar, Rajiv

    2015-01-01

    Transformational learning is the focus of twenty-first century global educational reforms. In India, there is a need to amalgamate the skills and knowledge of medical, nursing, and public health practitioners and to develop robust leadership competencies among them. This initiative proposed to identify interdisciplinary leadership competencies among Indian health practitioners and to develop a training program for interdisciplinary leadership skills through an Innovation Collaborative. Medical, nursing, and public health institutions partnered in this endeavor. An exhaustive literature search was undertaken to identify leadership competencies in these three professions. Published evidence was utilized in searching for the need for interdisciplinary training of health practitioners, including current scenarios in interprofessional health education and the key competencies required. The interdisciplinary leadership competencies identified were self-awareness, vision, self-regulation, motivation, decisiveness, integrity, interpersonal communication skills, strategic planning, team building, innovation, and being an effective change agent. Subsequently, a training program was developed, and three training sessions were piloted with 66 participants. Each cohort comprised a mix of participants from different disciplines. The pilot training guided the development of a training model for building interdisciplinary leadership skills and organizing interdisciplinary leadership workshops. The need for interdisciplinary leadership competencies is recognized. The long-term objective of the training model is integration into the regular medical, nursing, and public health curricula, with the aim of developing interdisciplinary leadership skills among them. Although challenging, formal incorporation of leadership skills into health professional education is possible within the interdisciplinary classroom setting using principles of transformative learning.

  10. Twenty First Century Science: Insights from the Design and Implementation of a Scientific Literacy Approach in School Science

    Science.gov (United States)

    Millar, Robin

    2006-10-01

    Although the term “scientific literacy” has been increasingly used in recent years to characterise the aim of school science education, there is still considerable uncertainty about its meaning and implications for the curriculum. A major national project in England, Twenty First Century Science, is evaluating the feasibility of a more flexible science curriculum structure for 15-year-old and 16-year-old students, centring around a core course for all students with a scientific literacy emphasis. Over 12,000 students in 78 schools have followed this course since September 2003. The development of a detailed teaching programme is an important means of clarifying the meanings and implications of a “scientific literacy” approach. Questionnaire data from teachers at the end of the first and second years of the project (N = 40 and N = 51) show a strongly positive evaluation of the central features of the course design. Teachers perceive the scientific literacy emphasis as markedly increasing student interest and engagement. Key challenges identified are the language and reasoning demands in looking critically at public accounts of science, and the classroom management of more open discussion about science-related issues.

  11. The era of the wandering mind? Twenty-first century research on self-generated mental activity

    Science.gov (United States)

    Callard, Felicity; Smallwood, Jonathan; Golchert, Johannes; Margulies, Daniel S.

    2013-01-01

    The first decade of the twenty-first century was characterized by renewed scientific interest in self-generated mental activity (activity largely generated by the individual, rather than in direct response to experimenters’ instructions or specific external sensory inputs). To understand this renewal of interest, we interrogated the peer-reviewed literature from 2003 to 2012 (i) to explore recent changes in use of terms for self-generated mental activity; (ii) to investigate changes in the topics on which mind wandering research, specifically, focuses; and (iii) to visualize co-citation communities amongst researchers working on self-generated mental activity. Our analyses demonstrated that there has been a dramatic increase in the term “mind wandering” from 2006, and a significant crossing-over of psychological investigations of mind wandering into cognitive neuroscience (particularly in relation to research on the default mode and default mode network). If our article concludes that this might, indeed, be the “era of the wandering mind,” it also calls for more explicit reflection to be given by researchers in this field to the terms they use, the topics and brain regions they focus on, and the research literatures that they implicitly foreground or ignore. PMID:24391606

  12. Animal models of human cerebellar ataxias: a cornerstone for the therapies of the twenty-first century.

    Science.gov (United States)

    Manto, Mario; Marmolino, Daniele

    2009-09-01

    Cerebellar ataxias represent a group of disabling neurological disorders. Our understanding of the pathogenesis of cerebellar ataxias is continuously expanding. A considerable number of laboratory animals with neurological mutations have been reported and numerous relevant animal models mimicking the phenotype of cerebellar ataxias are becoming available. These models greatly help dissecting the numerous mechanisms of cerebellar dysfunction, a major step for the assessment of therapeutics targeting a given deleterious pathway and for the screening of old or newly synthesized chemical compounds. Nevertheless, differences between animal models and human disorders should not be overlooked and difficulties in terms of characterization should not be occulted. The identification of the mutations of many hereditary ataxias, the development of valuable animal models, and the recent identifications of the molecular mechanisms underlying cerebellar disorders represent a combination of key factors for the development of anti-ataxic innovative therapies. It is anticipated that the twenty-first century will be the century of effective therapies in the field of cerebellar ataxias. The animal models are a cornerstone to reach this goal.

  13. Inherited Behaviour in Wilkie Collins's The Legacy of Cain: Victorian Studies and Twenty-First-Century Science Policy

    Directory of Open Access Journals (Sweden)

    Jay Clayton

    2008-10-01

    Full Text Available 'The Legacy of Cain' (1888, the last novel Wilkie Collins published before his death, is structured as a case study of the respective influences of nature and nurture. The central question is whether the daughter of a murderess will reveal a 'hereditary taint' or whether a loving and religious environment will prove the stronger influence on the child's character. The Victorians knew nothing about genetics, but scientists and novelists alike shared a vigorous discourse about the hereditary transmission of behaviour and whether 'character' was heritable. In the wake of genetic and epigenetic discoveries, we find ourselves faced with a situation comparable to that Collins encountered in the 1880s, when evolutionary theory was unsettling many things Victorians held dear. Exploring how novelists and scientists in the late-nineteenth century attempted to cope with notions of inherited behaviour without genetics sheds an interesting light on twenty-first-century reactions to the news that acquired characteristics and behavioural traits may be passed on to future generations through mechanisms other than the gene. The emergence of an influential, semi-autonomous zone of activity known as the policy arena, which occupies an intermediate position between the disciplinary specialist and the public sphere, enables humanists to participate in science policy today in ways comparable to the contributions made by Victorian literary figures such as Wilkie Collins, George Eliot, Matthew Arnold and Samuel Butler.

  14. 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...

  15. Agriculture in West Africa in the Twenty-First Century: Climate Change and Impacts Scenarios, and Potential for Adaptation.

    Science.gov (United States)

    Sultan, Benjamin; Gaetani, Marco

    2016-01-01

    West Africa is known to be particularly vulnerable to climate change due to high climate variability, high reliance on rain-fed agriculture, and limited economic and institutional capacity to respond to climate variability and change. In this context, better knowledge of how climate will change in West Africa and how such changes will impact crop productivity is crucial to inform policies that may counteract the adverse effects. This review paper provides a comprehensive overview of climate change impacts on agriculture in West Africa based on the recent scientific literature. West Africa is nowadays experiencing a rapid climate change, characterized by a widespread warming, a recovery of the monsoonal precipitation, and an increase in the occurrence of climate extremes. The observed climate tendencies are also projected to continue in the twenty-first century under moderate and high emission scenarios, although large uncertainties still affect simulations of the future West African climate, especially regarding the summer precipitation. However, despite diverging future projections of the monsoonal rainfall, which is essential for rain-fed agriculture, a robust evidence of yield loss in West Africa emerges. This yield loss is mainly driven by increased mean temperature while potential wetter or drier conditions as well as elevated CO2 concentrations can modulate this effect. Potential for adaptation is illustrated for major crops in West Africa through a selection of studies based on process-based crop models to adjust cropping systems (change in varieties, sowing dates and density, irrigation, fertilizer management) to future climate. Results of the cited studies are crop and region specific and no clear conclusions can be made regarding the most effective adaptation options. Further efforts are needed to improve modeling of the monsoon system and to better quantify the uncertainty in its changes under a warmer climate, in the response of the crops to such

  16. A scenario of European climate change for the late twenty-first century: seasonal means and interannual variability

    Energy Technology Data Exchange (ETDEWEB)

    Rowell, David P. [Hadley Centre for Climate Prediction and Research, Exeter (United Kingdom)

    2005-12-01

    A scenario of European climate change for the late twenty-first century is described, using a high-resolution state-of-the-art model. A time-slice approach is used, whereby the atmospheric general circulation model, HadAM3P, was integrated for two periods, 1960-1990 and 2070-2100, using the SRES A2 scenario. For the first time an ensemble of such experiments was produced, along with appropriate statistical tests for assessing significance. The focus is on changes to the statistics of seasonal means, and includes analysis of both multi-year means and interannual variance. All four seasons are assessed, and anomalies are mapped for surface air temperature, precipitation and snow mass. Mechanisms are proposed where these are dominated by straightforward local processes. In winter, the largest warming occurs over eastern Europe, up to 7 C, mean snow mass is reduced by at least 80% except over Scandinavia, and precipitation increases over all but the southernmost parts of Europe. In summer, temperatures rise by 6-9 C south of about 50 N, and mean rainfall is substantially reduced over the same area. In spring and autumn, anomalies tend to be weaker, but often display patterns similar to the preceding season, reflecting the inertia of the land surface component of the climate system. Changes in interannual variance are substantial in the solsticial seasons for many regions (note that for precipitation, variance estimates are scaled by the square of the mean). In winter, interannual variability of near-surface air temperature is considerably reduced over much of Europe, and the relative variability of precipitation is reduced north of about 50 N. In summer, the (relative) interannual variance of both variables increases over much of the continent. (orig.)

  17. The traditional commons of England and Wales in the twenty-first century: meeting new and old challenges

    Directory of Open Access Journals (Sweden)

    Chris Short

    2008-07-01

    Full Text Available The commons literature makes much of the changes within the traditional land use sectors of developed countries. This largely focuses on the decline of the economic function of commons that threaten their existence, the emergence of multiple use patterns, and the resilience and policy adaptation needed to continue. The situation in England and Wales is used to illustrate that commons are increasingly important to a number of ‘new’ rural functions and that the associated policy developments may hold an important message for progress towards sustainable multifunctional land management more generally. This article reviews and updates what is meant by the term common land within England and Wales, while outlining its current importance and threats. The commons literature is investigated to see if the approach is useful in revealing the current issues associated with the incorporation of new stakeholders and functions within a traditional structure. Recent changes and developments surrounding the Commons Act 2006 are assessed to see if they are likely to assist in sustaining these commons through the twenty-first century. The article argues that any new approach requires long term planning and a commitment to support local participation among commoners and others who are involved in the governance and management of these areas of land. In order for these challenges to be met there needs to be an understanding of the functions and cultural traditions of common land as well as of the changes in society associated with the decline in traditional agrarian management in developed countries. Such challenges can rarely if ever be achieved through legislation and policy developments, requiring an investment in developing locally based solutions.

  18. Towards regional projections of twenty-first century sea-level change based on IPCC SRES scenarios

    Energy Technology Data Exchange (ETDEWEB)

    Slangen, A.B.A.; Wal, R.S.W. van de [Utrecht University, Institute for Marine and Atmospheric research Utrecht, Utrecht (Netherlands); Katsman, C.A. [Royal Netherlands Meteorological Institute (KNMI), P.O. Box 201, De Bilt (Netherlands); Vermeersen, L.L.A. [TU Delft, Faculty of Aerospace Engineering, Delft (Netherlands); Riva, R.E.M. [TU Delft, Delft (Netherlands)

    2012-03-15

    Sea-level change is often considered to be globally uniform in sea-level projections. However, local relative sea-level (RSL) change can deviate substantially from the global mean. Here, we present maps of twenty-first century local RSL change estimates based on an ensemble of coupled climate model simulations for three emission scenarios. In the Intergovernmental Panel on Climate Change Fourth Assessment Report (IPCC AR4), the same model simulations were used for their projections of global mean sea-level rise. The contribution of the small glaciers and ice caps to local RSL change is calculated with a glacier model, based on a volume-area approach. The contributions of the Greenland and Antarctic ice sheets are obtained from IPCC AR4 estimates. The RSL distribution resulting from the land ice mass changes is then calculated by solving the sea-level equation for a rotating, elastic Earth model. Next, we add the pattern of steric RSL changes obtained from the coupled climate models and a model estimate for the effect of Glacial Isostatic Adjustment. The resulting ensemble mean RSL pattern reveals that many regions will experience RSL changes that differ substantially from the global mean. For the A1B ensemble, local RSL change values range from -3.91 to 0.79 m, with a global mean of 0.47 m. Although the RSL amplitude differs, the spatial patterns are similar for all three emission scenarios. The spread in the projections is dominated by the distribution of the steric contribution, at least for the processes included in this study. Extreme ice loss scenarios may alter this picture. For individual sites, we find a standard deviation for the combined contributions of approximately 10 cm, regardless of emission scenario. (orig.)

  19. Dietary guidelines to nourish humanity and the planet in the twenty-first century. A blueprint from Brazil.

    Science.gov (United States)

    Monteiro, Carlos Augusto; Cannon, Geoffrey; Moubarac, Jean-Claude; Martins, Ana Paula Bortoletto; Martins, Carla Adriano; Garzillo, Josefa; Canella, Daniela Silva; Baraldi, Larissa Galastri; Barciotte, Maluh; Louzada, Maria Laura da Costa; Levy, Renata Bertazzi; Claro, Rafael Moreira; Jaime, Patrícia Constante

    2015-09-01

    To present and discuss the dietary guidelines issued by the Brazilian government in 2014. The present paper describes the aims of the guidelines, their shaping principles and the approach used in the development of recommendations. The main recommendations are outlined, their significance for the cultural, socio-economic and environmental aspects of sustainability is discussed, and their application to other countries is considered. Brazil in the twenty-first century. All people in Brazil, now and in future. The food- and meal-based Brazilian Dietary Guidelines address dietary patterns as a whole and so are different from nutrient-based guidelines, even those with some recommendations on specific foods or food groups. The guidelines are based on explicit principles. They take mental and emotional well-being into account, as well as physical health and disease prevention. They identify diet as having cultural, socio-economic and environmental as well as biological and behavioural dimensions. They emphasize the benefits of dietary patterns based on a variety of natural or minimally processed foods, mostly plants, and freshly prepared meals eaten in company, for health, well-being and all relevant aspects of sustainability, as well as the multiple negative effects of ready-to-consume ultra-processed food and drink products. The guidelines' recommendations are designed to be sustainable personally, culturally, socially, economically and environmentally, and thus fit to face this century. They are for foods, meals and dietary patterns of types that are already established in Brazil, which can be adapted to suit the climate, terrain and customs of all countries.

  20. Uncertainty in twenty-first century projections of the Atlantic Meridional Overturning Circulation in CMIP3 and CMIP5 models

    Science.gov (United States)

    Reintges, Annika; Martin, Thomas; Latif, Mojib; Keenlyside, Noel S.

    2017-09-01

    Uncertainty in the strength of the Atlantic Meridional Overturning Circulation (AMOC) is analyzed in the Coupled Model Intercomparison Project Phase 3 (CMIP3) and Phase 5 (CMIP5) projections for the twenty-first century; and the different sources of uncertainty (scenario, internal and model) are quantified. Although the uncertainty in future projections of the AMOC index at 30°N is larger in CMIP5 than in CMIP3, the signal-to-noise ratio is comparable during the second half of the century and even larger in CMIP5 during the first half. This is due to a stronger AMOC reduction in CMIP5. At lead times longer than a few decades, model uncertainty dominates uncertainty in future projections of AMOC strength in both the CMIP3 and CMIP5 model ensembles. Internal variability significantly contributes only during the first few decades, while scenario uncertainty is relatively small at all lead times. Model uncertainty in future changes in AMOC strength arises mostly from uncertainty in density, as uncertainty arising from wind stress (Ekman transport) is negligible. Finally, the uncertainty in changes in the density originates mostly from the simulation of salinity, rather than temperature. High-latitude freshwater flux and the subpolar gyre projections were also analyzed, because these quantities are thought to play an important role for the future AMOC changes. The freshwater input in high latitudes is projected to increase and the subpolar gyre is projected to weaken. Both the freshening and the gyre weakening likely influence the AMOC by causing anomalous salinity advection into the regions of deep water formation. While the high model uncertainty in both parameters may explain the uncertainty in the AMOC projection, deeper insight into the mechanisms for AMOC is required to reach a more quantitative conclusion.

  1. Uncertainty in twenty-first century projections of the Atlantic Meridional Overturning Circulation in CMIP3 and CMIP5 models

    Science.gov (United States)

    Reintges, Annika; Martin, Thomas; Latif, Mojib; Keenlyside, Noel S.

    2016-05-01

    Uncertainty in the strength of the Atlantic Meridional Overturning Circulation (AMOC) is analyzed in the Coupled Model Intercomparison Project Phase 3 (CMIP3) and Phase 5 (CMIP5) projections for the twenty-first century; and the different sources of uncertainty (scenario, internal and model) are quantified. Although the uncertainty in future projections of the AMOC index at 30°N is larger in CMIP5 than in CMIP3, the signal-to-noise ratio is comparable during the second half of the century and even larger in CMIP5 during the first half. This is due to a stronger AMOC reduction in CMIP5. At lead times longer than a few decades, model uncertainty dominates uncertainty in future projections of AMOC strength in both the CMIP3 and CMIP5 model ensembles. Internal variability significantly contributes only during the first few decades, while scenario uncertainty is relatively small at all lead times. Model uncertainty in future changes in AMOC strength arises mostly from uncertainty in density, as uncertainty arising from wind stress (Ekman transport) is negligible. Finally, the uncertainty in changes in the density originates mostly from the simulation of salinity, rather than temperature. High-latitude freshwater flux and the subpolar gyre projections were also analyzed, because these quantities are thought to play an important role for the future AMOC changes. The freshwater input in high latitudes is projected to increase and the subpolar gyre is projected to weaken. Both the freshening and the gyre weakening likely influence the AMOC by causing anomalous salinity advection into the regions of deep water formation. While the high model uncertainty in both parameters may explain the uncertainty in the AMOC projection, deeper insight into the mechanisms for AMOC is required to reach a more quantitative conclusion.

  2. 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...

  3. Sea-level rise and its possible impacts given a ‘beyond 4°C world’ in the twenty-first century

    NARCIS (Netherlands)

    Nicholls, R.; Marinova, N.A.; Lowe, J.; Brown, S.; Vellinga, P.

    2011-01-01

    The range of future climate-induced sea-level rise remains highly uncertain with continued concern that large increases in the twenty-first century cannot be ruled out. The biggest source of uncertainty is the response of the large ice sheets of Greenland and west Antarctica. Based on our analysis,

  4. Bruce's Magnificent Quartet: Inquiry, Community, Technology and Literacy--Implications for Renewing Qualitative Research in the Twenty-First Century

    Science.gov (United States)

    Davidson, Judith

    2014-01-01

    Bruce and Bishop's community informatics work brings forward four critical concepts: inquiry, community, technology, and literacy. These four terms serve as the basis for a discussion of qualitative research in the twenty-first century--what is lacking and what is needed. The author suggests that to resolve the tensions or challenges…

  5. Towards a Common Ground: Arab versus Western Views about Challenges of Islamic Religious Education Curriculum of the Twenty-First Century

    Science.gov (United States)

    Rashed, Hazem

    2015-01-01

    The Islamic religious education curriculum of the twenty-first century is a cornerstone in a hot debate about necessary educational reforms in the Islamic World. This study aimed at investigating the depth of agreement/disagreement between Arab and Western educational views about challenges of this curriculum through reviewing academic…

  6. Towards a Common Ground: Arab versus Western Views about Challenges of Islamic Religious Education Curriculum of the Twenty-First Century

    Science.gov (United States)

    Rashed, Hazem

    2015-01-01

    The Islamic religious education curriculum of the twenty-first century is a cornerstone in a hot debate about necessary educational reforms in the Islamic World. This study aimed at investigating the depth of agreement/disagreement between Arab and Western educational views about challenges of this curriculum through reviewing academic…

  7. Bruce's Magnificent Quartet: Inquiry, Community, Technology and Literacy--Implications for Renewing Qualitative Research in the Twenty-First Century

    Science.gov (United States)

    Davidson, Judith

    2014-01-01

    Bruce and Bishop's community informatics work brings forward four critical concepts: inquiry, community, technology, and literacy. These four terms serve as the basis for a discussion of qualitative research in the twenty-first century--what is lacking and what is needed. The author suggests that to resolve the tensions or challenges…

  8. The Challenges of Teaching and Learning about Science in the Twenty-First Century: Exploring the Abilities and Constraints of Adolescent Learners

    Science.gov (United States)

    Anderman, Eric M.; Sinatra, Gale M.; Gray, DeLeon L.

    2012-01-01

    In this article, we critically examine skills that are necessary for the effective learning of science in adolescent populations. We argue that a focus on twenty-first-century skills among adolescents within the context of science instruction must be considered in light of research on cognitive and social development. We first review adolescents'…

  9. Solving the problems we face: the United States Environmental Protection Agency, sustainability, and the challenges of the twenty-first century

    Science.gov (United States)

    Addressing the problems of the twenty-first century will require new initiatives that complement traditional regulatory activities. Existing regulations, such as the Clean Air Act and Clean Water Act are important safety nets in the United States for protecting human health and t...

  10. Measuring Twenty-First Century Skills: Development and Validation of a Scale for In-Service and Pre-Service Teachers

    Science.gov (United States)

    Jia, Yueming; Oh, Youn Joo; Sibuma, Bernadette; LaBanca, Frank; Lorentson, Mhora

    2016-01-01

    A self-report scale that measures teachers' confidence in teaching students about twenty-first century skills was developed and validated with pre-service and in-service teachers. First, 16 items were created to measure teaching confidence in six areas: information literacy, collaboration, communication, innovation and creativity, problem solving,…

  11. Sensitivity of discharge and flood frequency to twenty-first century and late Holocene changes in climate and land use (River Meuse, northwest Europe)

    NARCIS (Netherlands)

    Ward, P.J.; Renssen, H.; Aerts, J.C.J.H.; Verburg, P.H.

    2011-01-01

    We used a calibrated coupled climate–hydrological model to simulate Meuse discharge over the late Holocene (4000–3000 BP and 1000–2000 AD). We then used this model to simulate discharge in the twenty-first century under SRES emission scenarios A2 and B1, with and without future land use change. Mean

  12. 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.

  13. 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.

  14. THE ROLE AND RATIONALE OF THE NUCLEAR NON-PROLIFERATION TREATY IN THE TWENTY-FIRST CENTURY

    Directory of Open Access Journals (Sweden)

    Tom COPPEN

    2012-12-01

    Full Text Available Much has been written about perceived weaknesses of the NPT and the challenges it has been facing over the last decades. Analysing the most important provisions of the NPT, this article demonstrates how the treaty has managed to maintain its central role in the non-proliferation regime since its conclusion, and how it retains enough flexibility within its review mechanism and its managerial approach to supervision to keep this position for the decades to come. The theoretical framework of the article is formed by theory of arms control law, relevant features of which are: a large influence of politics and national interests of states on the rule of law; its flexible yet treaty-based nature; and the distinctive role of supervision in order to ensure compliance with primary rules. The article analyses key NPT provisions. Based on Article VIII, the NPT Review Conferences have both an important political and legal function. They are the NPT’s mechanism for review, implementation and supervision; in legal terms, they enable the evolution of the NPT based on subsequent agreement and practice. The NPT articles on non-proliferation and disarmament illustrate how the NPT has evolved to close off loopholes (Articles I and II and retains its flexibility whilst providing a global platform for negotiations on nuclear disarmament (Article VI. Article III evolved and must be understood to oblige NPT states to sign an Additional Protocol (AP with the IAEA. Article IV sets the parameters for the peaceful uses of nuclear energy, but leaves room for negotiation and conflict. The supervision of the NPT, illustrated by the case of Iran, is a complicated process involving international organisations such as the IAEA and the UNSC; while these may play important roles, however, the enforcement of the NPT is ultimately left to the NPT states themselves.

  15. Historical Approach to the Role of Women in the Legislation of Iran: A Case Study on the Twenty-First Parliament

    Directory of Open Access Journals (Sweden)

    Sarah Sheibani

    2017-01-01

    Full Text Available One hundred and ten years ago, men and women took constitutionalism to achieve justice in Iran. National Council was the result of the Iranian people's struggle for justice, both women and men. Men policies from the beginning of legislation put women as minors and lunatics and bankrupted and banned them from vote. However, the Constitutional Revolution as a turning point and a national revolution played a key role in changing attitudes to women and structural context of their participation provided. In this paper, with the use of descriptive-analytical as well as quantitative methods, we sought to answer the question that what was the position of women in the twenty-first Parliament. The results of this study suggest that when Iranian women were allowed to participate politics, they have achieved to show their ability in politics as we saw examples in the twenty-first Parliament in which women had twenty-two percent participation.

  16. Change and Continuity in Librarianship: Approaching the Twenty-First Century. Proceedings of the 40th Military Librarians Workshop, 20-22 November 1996, Annapolis, Maryland,

    Science.gov (United States)

    1996-11-01

    Garden Hotel on 20-22 November 1996. The theme was Change and Continuity in LibrarianshiR: ADDroachina to Twenty-first Century. The program featured...text is printed out, there are enormous economic and ecological disadvantages to the all-digital library. Strike one. Omnipresent Electronics What ever...a change of address. WINGS is also the prototype of a proposed kiosk system which would place kiosks with these services in local malls, libraries

  17. Evaluation of the twenty-first century RCM simulations driven by multiple GCMs over the Eastern Mediterranean-Black Sea region

    Science.gov (United States)

    Önol, Barış; Bozkurt, Deniz; Turuncoglu, Ufuk Utku; Sen, Omer Lutfi; Dalfes, H. Nuzhet

    2014-04-01

    In this study, human-induced climate change over the Eastern Mediterranean-Black Sea region has been analyzed for the twenty-first century by performing regional climate model simulations forced with large-scale fields from three different global circulation models (GCMs). Climate projections have been produced with Special Report on Emissions Scenarios A2, A1FI and B1 scenarios, which provide greater diversity in climate information for future period. The gradual increases for temperature are widely apparent during the twenty-first century for each scenario simulation, but ECHAM5-driven simulation generally has a weaker signal for all seasons compared to CCSM3 simulations except for the Fertile Crescent. The contrast in future temperature change between the winter and summer seasons is very strong for CCSM3-A2-driven and HadCM3-A2-driven simulations over Carpathians and Balkans, 4-5 °C. In addition, winter runoff over mountainous region of Turkey, which feeds many river systems including the Euphrates and Tigris, increases in second half of the century since the snowmelt process accelerates where the elevation is higher than 1,500 m. Moreover, analysis of daily temperature outputs reveals that the gradual decrease in daily minimum temperature variability for January during the twenty-first century is apparent over Carpathians and Balkans. Analysis of daily precipitation extremes shows that positive trend is clear during the last two decades of the twenty-first century over Carpathians for both CCSM3-driven and ECHAM5-driven simulations. Multiple-GCM driven regional climate simulations contribute to the quantification of the range of climate change over a region by performing detailed comparisons between the simulations.

  18. Transient climate change scenario simulation of the Mediterranean Sea for the twenty-first century using a high-resolution ocean circulation model

    Energy Technology Data Exchange (ETDEWEB)

    Somot, S.; Sevault, F.; Deque, M. [Centre National de Recherches Meteorologiques, Meteo-France, Toulouse cedex 1 (France)

    2006-12-15

    A scenario of the Mediterranean Sea is performed for the twenty-first century based on an ocean modelling approach. A climate change IPCC-A2 scenario run with an atmosphere regional climate model is used to force a Mediterranean Sea high-resolution ocean model over the 1960-2099 period. For comparison, a control simulation as long as the scenario has also been carried out under present climate fluxes. This control run shows air-sea fluxes in agreement with observations, stable temperature and salinity characteristics and a realistic thermohaline circulation simulating the different intermediate and deep water masses described in the literature. During the scenario, warming and saltening are simulated for the surface (+3.1 C and + 0.48 psu for the Mediterranean Sea at the end of the twenty-first century) and for the deeper layers (+1.5 C and + 0.23 psu on average). These simulated trends are in agreement with observed trends for the Mediterranean Sea over the last decades. In addition, the Mediterranean thermohaline circulation (MTHC) is strongly weakened at the end of the twenty-first century. This behaviour is mainly due to the decrease in surface density and so the decrease in winter deep-water formation. At the end of the twenty-first century, the MTHC weakening can be evaluated as -40% for the intermediate waters and -80% for the deep circulation with respect to present-climate conditions. The characteristics of the Mediterranean Outflow Waters flowing into the Atlantic Ocean are also strongly influenced during the scenario. (orig.)

  19. Book review: The superlative city: Dubai and the urban condition in the early twenty-first century edited by Ahmed Kanna

    OpenAIRE

    Housby, Elaine

    2014-01-01

    "The Superlative City: Dubai and the Urban Condition in the Early Twenty-First Century." Ahmed Kanna. Harvard University Press. August 2013. --- In the last few years, the Persian Gulf city of Dubai has exploded from the Arabian sands onto the world stage. Oil wealth, land rent, and so-called informal economic practices have blanketed the urbanscape with enormous enclaved developments attracting a global elite, while the economy runs on a huge army of migrant workers from the labour-exporting...

  20. 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...

  1. 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.

  2. Types of social media (Web 2.0) used by Australian allied health professionals to deliver early twenty-first-century practice promotion and health care.

    Science.gov (United States)

    Usher, Wayne

    2011-01-01

    Types of social media (Web 2.0) usage associated with eight of Australia's major allied health professions (AHPs, n = 935) were examined. Australian AHPs are interacting with Web 2.0 technologies for personal use but are failing to implement such technologies throughout their health professions to deliver health care. Australian AHPs are willing to undertake online educational courses designed to up skill them about how Web 2.0 may be used for practice promotion and health care delivery in the early twenty-first century. Participants in this study indicated that educational courses that were offered online would be the preferred mode of delivery.

  3. Does the Common Agricultural Policy still make sense in the twenty-first century? CAP after 2013 from the perspective of Poland and Hungary

    Directory of Open Access Journals (Sweden)

    Elżbieta Daszkowska

    2009-01-01

    Full Text Available The EU CAP has developed immensely since the 1960’s. However, its current determinants are completely different from those which formed the CAP foundations. This results mainly from the fact that the UE CAP must meet present-day challenges and threats. Moreover, further EU enlargements also significantly influenced performance of this sector of economy. It is important to determine whether the existence of the CAP in the twenty-first century still makes sense and to specify in more detail the CAP reform directions after 2013 from the perspective of Poland and Hungary.

  4. 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

  5. Book review of Capital in the Twenty-First Century, by Thomas Piketty. Cambridge, Massachusetts, London, England: The Belknap Press of Harvard Press, 2014, 605 pages

    Directory of Open Access Journals (Sweden)

    Paul Dobrescu

    2015-04-01

    Full Text Available “Every now and then, the field of economics produces an important book; this is one of them” (Cowen, 2014. These are the opening words of Tyler Cowen’s presentation of Thomas Piketty’s work, “Capital in the Twenty-First Century” (Piketty, 2014, in Foreign Affairs. This is a book that is visibly placed in all important bookstores around the world, widely debated, acclaimed, sold (over 1 million copies have been sold so far. It has been favorably reviewed or quoted in all major journals. The assessment of “Capital in the Twenty-First Century” by Paul Krugman, Nobel Economics Prize Laureate as a “magnificent, sweeping meditation on inequality”, is highly relevant: “This is a book that will change both the way we think about society and the way we do economics” (Krugman, 2014. Finally, Piketty’s book is included in the list of the year’s best books by prestigious journals, such as The Economist, Financial Times, The Washington Post, Observer, The Independent, Daily Telegraph; Financial Times and McKinsey have hailed it as the best book of 2014.

  6. A Conservation Ethic and the Collecting of Animals by Institutions of Natural Heritage in the Twenty-First Century: Case Study of the Australian Museum.

    Science.gov (United States)

    Ikin, Timothy

    2011-02-15

    Collecting of animals from their habitats for preservation by museums and related bodies is a core operation of such institutions. Conservation of biodiversity in the current era is a priority in the scientific agendas of museums of natural heritage in Australia and the world. Intuitively, to take animals from the wild, while engaged in scientific or other practices that are supposed to promote their ongoing survival, may appear be incompatible. The Australian Museum presents an interesting ground to consider zoological collecting by museums in the twenty-first century. Anderson and Reeves in 1994 argued that a milieu existed that undervalued native species, and that the role of natural history museums, up to as late as the mid-twentieth century, was only to make a record the faunal diversity of Australia, which would inevitably be extinct. Despite the latter, conservation of Australia's faunal diversity is a key aspect of research programmes in Australia's institutions of natural heritage in the current era. This paper analyses collecting of animals, a core task for institutions of natural heritage, and how this interacts with a professed "conservation ethic" in a twenty-first century Australian setting.

  7. High School Students' Perceptions of the Effects of International Science Olympiad on Their STEM Career Aspirations and Twenty-First Century Skill Development

    Science.gov (United States)

    Sahin, Alpaslan; Gulacar, Ozcan; Stuessy, Carol

    2015-12-01

    Social cognitive theory guided the design of a survey to investigate high school students' perceptions of factors affecting their career contemplations and beliefs regarding the influence of their participation in the international Science Olympiad on their subject interests and twenty-first century skills. In addition, gender differences in students' choice of competition category were studied. Mixed methods analysis of survey returns from 172 Olympiad participants from 31 countries showed that students' career aspirations were affected most by their teachers, personal interests, and parents, respectively. Students also indicated that they believed that their participation in the Olympiad reinforced their plan to choose a science, technology, engineering, and mathematics (STEM) major at college and assisted them in developing and improving their twenty-first century skills. Furthermore, female students' responses indicated that their project choices were less likely to be in the engineering category and more likely to be in the environment or energy categories. Findings are discussed in the light of increasing the awareness of the role and importance of Science Olympiads in STEM career choice and finding ways to attract more female students into engineering careers.

  8. How Has Elderly Migration Changed in the Twenty-First Century? What the Data Can-and Cannot-Tell Us.

    Science.gov (United States)

    Conway, Karen Smith; Rork, Jonathan C

    2016-08-01

    Interstate elderly migration has strong implications for state tax policies and health care systems, yet little is known about how it has changed in the twenty-first century. Its relative rarity requires a large data set with which to construct reliable measures, and the replacement of the U.S. Census long form (CLF) with the American Community Survey (ACS) has made such updates difficult. Two commonly used alternative migration data sources-the Current Population Survey (CPS) and the Statistics of Income (SOI) program of the Internal Revenue Service (IRS)-suffer serious limitations in studying the migration of any subpopulation, including the elderly. Our study informs migration research in the post-2000 era by identifying methodological differences between data sources and devising strategies for reconciling the CLF and ACS. Our investigation focusing on the elderly suggests that the ACS can generate comparable migration data that reveal a continuation of previously identified geographic patterns as well as changes unique to the 2000s. However, its changed definition of residence and survey timing leaves us unable to construct a comparable national migration rate, suggesting that one must use national trends in the smaller CPS to investigate whether elderly migration has increased or decreased in the twenty-first century.

  9. A Conservation Ethic and the Collecting of Animals by Institutions of Natural Heritage in the Twenty-First Century: Case Study of the Australian Museum

    Directory of Open Access Journals (Sweden)

    Timothy Ikin

    2011-02-01

    Full Text Available Collecting of animals from their habitats for preservation by museums and related bodies is a core operation of such institutions. Conservation of biodiversity in the current era is a priority in the scientific agendas of museums of natural heritage in Australia and the world. Intuitively, to take animals from the wild, while engaged in scientific or other practices that are supposed to promote their ongoing survival, may appear be incompatible. The Australian Museum presents an interesting ground to consider zoological collecting by museums in the twenty-first century. Anderson and Reeves in 1994 argued that a milieu existed that undervalued native species, and that the role of natural history museums, up to as late as the mid-twentieth century, was only to make a record the faunal diversity of Australia, which would inevitably be extinct. Despite the latter, conservation of Australia’s faunal diversity is a key aspect of research programmes in Australia’s institutions of natural heritage in the current era. This paper analyses collecting of animals, a core task for institutions of natural heritage, and how this interacts with a professed “conservation ethic” in a twenty-first century Australian setting.

  10. Wicked Female Characters in Roddy Doyle’s “The Pram”: Revisiting Celtic and Polish Myths in the Context of Twenty-First Century Ireland

    Directory of Open Access Journals (Sweden)

    Burcu Gülüm Tekin

    2015-07-01

    Full Text Available “The Pram” is the only horror story in Roddy Doyle’s collection The Deportees and Other Stories (2007. It is also unique in terms of its approach to Ireland’s multicultural scene in the twenty-first century. Doyle turns the other side of the coin and introduces a migrant caretaker (Alina, who loses her mind due to her employees’ (the O’Reilly family ill-treatment. As a reaction to their scornful attitude, Alina becomes a murderer. Set in the context of twenty-first century Dublin, “The Pram” contains various references to Celtic and Polish mythological female figures (in particular, the Old Hag of Beara and Boginka, which strengthen the thrilling, mythical elements in the plot. This paper aims to examine the characters’ negative attitude towards migrants in Ireland in the light of the racist discourse present in the story. Also, I will focus on the story’s female characters and discuss the handicaps of being a female migrant in Ireland. The parallels between the mythical female figures and the protagonist Alina will be another point to be analyzed. The argument of this paper is that Doyle does not always portray the positive outcomes of a multicultural society. On the contrary, he conveys the perspective of the incoming migrant. “The Pram” stages the obstacles that a female outsider may experience in Ireland and her subsequent transformation as a result of the racism she encounters there.

  11. Twenty-first century Irvings

    Energy Technology Data Exchange (ETDEWEB)

    Sawler, H.

    2007-07-01

    The Irving family is the most powerful family in Atlantic Canada and one of the richest families in the world. The family is valued at $5.9 billion. This book discussed the family's growth and gradual domination over the forestry, energy, and transportation industries in Atlantic Canada. The book examined how the family has managed to remain dominant and powerful, and examined the ability of future Irving generations to maintain their power in the future, as the family expands and disperses. Details of the Irvings' particular style of entrepreneurship and their use of vertical integration were presented, and their relationships with government agencies were also discussed. The book examined the business practices and methods of different generations of Irvings, from the origins of the family business. The book demonstrated how the family has remained a progressive economic force for more than 150 years. An Irving family business history was also provided. Family attitudes towards the environment, philanthropy, and the media were also discussed. refs.

  12. 2010 IEEE World Congress on Computational Intelligence (IEEE WCCI 2010)

    CERN Document Server

    Solanas, Agusti; Martinez-Balleste, Antoni; Computational Intelligence for Privacy and Security

    2012-01-01

    The book is a collection of invited papers on Computational Intelligence for Privacy and Security. The majority of the chapters are extended versions of works presented at the special session on Computational Intelligence for Privacy and Security of the International Joint Conference on Neural Networks (IJCNN-2010) held July 2010 in Barcelona, Spain. The book is devoted to Computational Intelligence for Privacy and Security. It provides an overview of the most recent advances on the Computational Intelligence techniques being developed for Privacy and Security. The book will be of interest to researchers in industry and academics and to post-graduate students interested in the latest advances and developments in the field of Computational Intelligence for Privacy and Security.

  13. NREL preprints for the 23rd IEEE Photovoltaic Specialists Conference

    Energy Technology Data Exchange (ETDEWEB)

    Fitzgerald, M. [ed.

    1993-05-01

    Topics covered include various aspects of solar cell fabrication and performance. Aluminium-gallium arsenides, cadmium telluride, amorphous silicon, and copper-indium-gallium selenides are all characterized in their applicability in solar cells.

  14. Template for preparation of papers for IEEE sponsored conferences & symposia.

    Science.gov (United States)

    Sacchi, L; Dagliati, A; Tibollo, V; Leporati, P; De Cata, P; Cerra, C; Chiovato, L; Bellazzi, R

    2015-01-01

    To improve the access to medical information is necessary to design and implement integrated informatics techniques aimed to gather data from different and heterogeneous sources. This paper describes the technologies used to integrate data coming from the electronic medical record of the IRCCS Fondazione Maugeri (FSM) hospital of Pavia, Italy, and combines them with administrative, pharmacy drugs purchase coming from the local healthcare agency (ASL) of the Pavia area and environmental open data of the same region. The integration process is focused on data coming from a cohort of one thousand patients diagnosed with Type 2 Diabetes Mellitus (T2DM). Data analysis and temporal data mining techniques have been integrated to enhance the initial dataset allowing the possibility to stratify patients using further information coming from the mined data like behavioral patterns of prescription-related drug purchases and other frequent clinical temporal patterns, through the use of an intuitive dashboard controlled system.

  15. 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.

  16. Energy and environmental issues on building services engineering in the life-style of twenty-first century; 21 seiki no kankyo energy to life style no arikata

    Energy Technology Data Exchange (ETDEWEB)

    Nakahara, N.

    2001-01-05

    The author discussed building services technologies that characterize twenty-first century in view of the energy, environment and life-style. Natural energy systems shall take a principal roll in this century from the energy and environmental point of view. Among building engineering issues, IT technologies such as BEMS and BOFD connected to the internet and backed by simulation technologies will become most important together with establishment of commissioning process. Home office will become the new life-style of the century and home environmental conditioning systems shall be further developed. As important social system issues, international relations and language matters, the education system of environmental system engineering and the licensing of professional engineers were discussed. Maintaining philosophy to seek for truth hidden behind the shadow was concluded as most important for environmental engineers. (author)

  17. 财富之恶还是政府之恶?——评Capital in the twenty-first Century

    Institute of Scientific and Technical Information of China (English)

    唐娜

    2014-01-01

    <正>2013年年初出版法语版同名著作之时,年仅42岁的法国著名经济学家、巴黎政治经济学院教授托马斯·皮克提(Thomas Piketty)一定不会想到仅在短短一年之后,当他撰写的新作Capital in the Twenty-First Century,英文版在美国一经面世就掀起了学术界的轩然大波,引发了社会各界关于资本主义财富分配和社会不平等问题的争论与思考。

  18. Twenty-First Water Reactor Safety Information Meeting. Volume 3, Primary system integrity; Aging research, products and applications; Structural and seismic engineering; Seismology and geology: Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Monteleone, S. [comp.] [Brookhaven National Lab., Upton, NY (United States)

    1994-04-01

    This three-volume report contains 90 papers out of the 102 that were presented at the Twenty-First Water Reactor Safety Information Meeting held at the Bethesda Marriott Hotel, Bethesda, Maryland, during the week of October 25-27, 1993. The papers are printed in the order of their presentation in each session and describe progress and results of programs in nuclear safety research conducted in this country and abroad. Foreign participation in the meeting included papers presented by researchers from France, Germany, Japan, Russia, Switzerland, Taiwan, and United Kingdom. The titles of the papers and the names of the authors have been updated and may differ from those that appeared in the final program of the meeting. Selected papers were indexed separately for inclusion in the Energy Science and Technology Database.

  19. Projected impact of climate change in the hydroclimatology of Senegal with a focus over the Lake of Guiers for the twenty-first century

    Science.gov (United States)

    Tall, Moustapha; Sylla, Mouhamadou Bamba; Diallo, Ismaïla; Pal, Jeremy S.; Faye, Aïssatou; Mbaye, Mamadou Lamine; Gaye, Amadou Thierno

    2016-04-01

    This study analyzes the impact of anthropogenic climate change in the hydroclimatology of Senegal with a focus over the lake of Guiers basin for the middle (2041-2060) and late twenty-first century (2080-2099). To this end, high-resolution multimodel ensemble based on regional climate model experiments considering two Representative Concentration Pathways (RCP4.5 and RCP8.5) is used. The results indicate that an elevated warming, leading to substantial increase of atmospheric water demand, is projected over the whole of Senegal. In the Lake basin, these increases in potential evapotranspiration (PE) range between 10 and 25 % in the near future and for RCP4.5 while for the far future and RCP8.5, they exceed 50 %. In addition, mean precipitation unveils contrasting changes with wetter (10 to 25 % more) conditions by the middle of the century and drier conditions (more than 50 %) during the late twenty-first century. Such changes cause more/less evapotranspiration and soil moisture respectively during the two future periods. Furthermore, surface runoff shows a tendency to increase in most areas amid few locations including the Lake basin with substantial reduction. Finally, it is found that while semi-arid climates develop in the RCP4.5 scenario, generalized arid conditions prevail over the whole Senegal for RCP8.5. It is thus evident that these future climate conditions substantially threaten freshwater availability for the country and irrigated cropping over the Lake basin. Therefore, strong governmental politics are needed to help design response options to cope with the challenges posed by the projected climate change for the country.

  20. Impacts and responses to sea-level rise: a global analysis of the SRES scenarios over the twenty-first century.

    Science.gov (United States)

    Nicholls, Robert J; Tol, Richard S J

    2006-04-15

    Taking the Special Report on Emission Scenarios (SRES) climate and socio-economic scenarios (A1FI, A2, B1 and B2 'future worlds'), the potential impacts of sea-level rise through the twenty-first century are explored using complementary impact and economic analysis methods at the global scale. These methods have never been explored together previously. In all scenarios, the exposure and hence the impact potential due to increased flooding by sea-level rise increases significantly compared to the base year (1990). While mitigation reduces impacts, due to the lagged response of sea-level rise to atmospheric temperature rise, impacts cannot be avoided during the twenty-first century by this response alone. Cost-benefit analyses suggest that widespread protection will be an economically rational response to land loss due to sea-level rise in the four SRES futures that are considered. The most vulnerable future worlds to sea-level rise appear to be the A2 and B2 scenarios, which primarily reflects differences in the socio-economic situation (coastal population, Gross Domestic Product (GDP) and GDP/capita), rather than the magnitude of sea-level rise. Small islands and deltaic settings stand out as being more vulnerable as shown in many earlier analyses. Collectively, these results suggest that human societies will have more choice in how they respond to sea-level rise than is often assumed. However, this conclusion needs to be tempered by recognition that we still do not understand these choices and significant impacts remain possible. Future worlds which experience larger rises in sea-level than considered here (above 35 cm), more extreme events, a reactive rather than proactive approach to adaptation, and where GDP growth is slower or more unequal than in the SRES futures remain a concern. There is considerable scope for further research to better understand these diverse issues.

  1. Baltic Sea climate in the late twenty-first century: a dynamical downscaling approach using two global models and two emission scenarios

    Energy Technology Data Exchange (ETDEWEB)

    Meier, H.E.M. [Swedish Meteorological and Hydrological Institute, Rossby Centre, Norrkoeping (Sweden)

    2006-07-15

    A regional ocean circulation model was used to project Baltic Sea climate at the end of the twenty-first century. A set of four scenario simulations was performed utilizing two global models and two forcing scenarios. To reduce model biases and to spin up future salinity the so-called {delta}-change approach was applied. Using a regional coupled atmosphere-ocean model 30-year climatological monthly mean changes of atmospheric surface data and river discharge into the Baltic Sea were calculated from previously conducted time slice experiments. These changes were added to reconstructed atmospheric surface fields and runoff for the period 1903-1998. The total freshwater supply (runoff and net precipitation) is projected to increase between 0 and 21%. Due to increased westerlies in winter the annual mean wind speed will be between 2 and 13% larger compared to present climate. Both changes will cause a reduction of the average salinity of the Baltic Sea between 8 and 50%. Although salinity in the entire Baltic might be significantly lower at the end of the twenty-first century, deep water ventilation will very likely only slightly change. The largest change is projected for the secondary maximum of sea water age within the halocline. Further, the average temperature will increase between 1.9 and 3.2 C. The temperature response to atmospheric changes lags several months. Future annual maximum sea ice extent will decrease between 46 and 77% in accordance to earlier studies. However, in contrast to earlier results in the warmest scenario simulation one ice-free winter out of 96 seasons was found. Although wind speed changes are uniform, extreme sea levels may increase more than the mean sea level. In two out of four projections significant changes of 100-year surge heights were found. (orig.)

  2. Projected impact of climate change in the hydroclimatology of Senegal with a focus over the Lake of Guiers for the twenty-first century

    Science.gov (United States)

    Tall, Moustapha; Sylla, Mouhamadou Bamba; Diallo, Ismaïla; Pal, Jeremy S.; Faye, Aïssatou; Mbaye, Mamadou Lamine; Gaye, Amadou Thierno

    2017-07-01

    This study analyzes the impact of anthropogenic climate change in the hydroclimatology of Senegal with a focus over the lake of Guiers basin for the middle (2041-2060) and late twenty-first century (2080-2099). To this end, high-resolution multimodel ensemble based on regional climate model experiments considering two Representative Concentration Pathways (RCP4.5 and RCP8.5) is used. The results indicate that an elevated warming, leading to substantial increase of atmospheric water demand, is projected over the whole of Senegal. In the Lake basin, these increases in potential evapotranspiration (PE) range between 10 and 25 % in the near future and for RCP4.5 while for the far future and RCP8.5, they exceed 50 %. In addition, mean precipitation unveils contrasting changes with wetter (10 to 25 % more) conditions by the middle of the century and drier conditions (more than 50 %) during the late twenty-first century. Such changes cause more/less evapotranspiration and soil moisture respectively during the two future periods. Furthermore, surface runoff shows a tendency to increase in most areas amid few locations including the Lake basin with substantial reduction. Finally, it is found that while semi-arid climates develop in the RCP4.5 scenario, generalized arid conditions prevail over the whole Senegal for RCP8.5. It is thus evident that these future climate conditions substantially threaten freshwater availability for the country and irrigated cropping over the Lake basin. Therefore, strong governmental politics are needed to help design response options to cope with the challenges posed by the projected climate change for the country.

  3. 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...

  4. Proceedings of the Sixth International Conference on Advanced Learning Technologies

    NARCIS (Netherlands)

    Kinshuk; Koper, Rob; Kommers, Piet; Kirschner, Paul A.; Sampson, Demetrios; Didderen, Wim

    2006-01-01

    Kinshuk, Koper, R., Kommers, P., Kirschner, P., Sampson, D. G., & Didderen, W. (Eds.) (2006). Advanced Technologies for Life-Long Learning. Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies 2006. July, 5-7, 2006, Kerkrade, The Netherlands. Los Alamitos, CA: IEEE

  5. 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...

  6. 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...

  7. Evaluating CMIP5 models using GPS radio occultation COSMIC temperature in UTLS region during 2006-2013: twenty-first century projection and trends

    Science.gov (United States)

    Kishore, P.; Basha, Ghouse; Venkat Ratnam, M.; Velicogna, Isabella; Ouarda, T. B. M. J.; Narayana Rao, D.

    2016-11-01

    This paper provides a first overview of the performance of global climate models participating in the Coupled Model Inter-Comparison Project phase 5 (CMIP5) in simulating the upper troposphere and lower stratosphere (UTLS) temperatures. Temperature from CMIP5 models is evaluated with high resolution global positioning system radio occultation (GPSRO) constellation observing system for meteorology, ionosphere, and climate (COSMIC) data during the period of July 2006-December 2013. Future projections of 17 CMIP5 models based on the representative concentration pathway (RCP) 8.5 scenarios are utilized to assess model performance and to identify the biases in the temperature in the UTLS region at eight different pressure levels. The evaluations were carried out vertically, regionally, and globally to understand the temperature uncertainties in CMIP5 models. It is found that the CMIP5 models successfully reproduce the general features of temperature structure in terms of vertical, annual, and inter-annual variation. The ensemble mean of CMIP5 models compares well with the COSMIC GPSRO data with a mean difference of ±1 K. In the tropical region, temperature biases vary from one model to another. The spatial difference between COSMIC and ensemble mean reveals that at 100 hPa, the models show a bias of about ±2 K. With increase in altitude the bias decreases and turns into a cold bias over the tropical and Antarctic regions. The future projections of the CMIP5 models were presented during 2006-2099 under the RCP 8.5 scenarios. Projections show a warming trend at 300, 200, and 100 hPa levels over a wide region of 60°N-45°S. The warming decreases rapidly and becomes cooling with increase in altitudes by the end of twenty-first century. Significant cooling is observed at 30, 20, and 10 hPa levels. At 300/10 hPa, the temperature trend increases/decreases by 0.82/0.88 K/decade at the end of twenty-first century under RCP 8.5 scenarios.

  8. Retos de la bioética en la medicina del siglo XXI Challenges of bioethics in twenty-first century medicine

    Directory of Open Access Journals (Sweden)

    Jorge Alberto Álvarez-Díaz

    2011-12-01

    Full Text Available Para plantear posibles retos de la bioética en la medicina del siglo XXI es necesario considerar que existieron algunos retos en el pasado (en el origen de esa nueva disciplina llamada bioética; que los retos se han ido modificando con el avance científico, biomédico y humanístico; considerando que los retos que pueden plantearse para el futuro serán, de diferentes maneras, resultado de este devenir histórico. Se plantean como grandes retos: los problemas no resueltos de justicia, equidad y pobreza; los retos que plantea la introducción de nuevas tecnologías con el paradigma de la nanomedicina y los retos que plantea el avance de las neurociencias con el paradigma de la neuroética.In order to propose possible challenges of bioethics in the twenty-first century medicine, it is necessary to consider that there were some past challenges (at the origin of this new discipline called bioethics, that the challenges have been modified with scientific, biomedical and humanistic breakthroughs, considering at the same time that challenges that may arise in the future will be, in different ways, a result of this historical evolution. The major challenges would be in the future: the unsolved problems of justice, equity and poverty; the challenges posed by the introduction of new technologies with the nanomedicine paradigm; and finally, the challenges driven by breakthroughs in neurosciences with the neuroethics paradigm.

  9. Thomas Piketty: Capital in the Twenty-First Century (Le Capital au XXIe siècle. (Ensk þýðing: Arthur Goldhammer.

    Directory of Open Access Journals (Sweden)

    Gylfi Magnússon

    2014-06-01

    Full Text Available Í umsögn gagnrýnanda kemur meðal annars eftirfarandi fram: Ritinu er ekki ætlað að vera lokaorðin um viðfangsefnið heldur miklu frekar grunnur að frekari umræðu og rannsóknum. Það hefur tekist. Capital in the Twenty-First Century er verk sem hefur þegar vakið mikla umræðu og verður vafalaust rætt áfram árum saman. Það er raunar nánast skyldulesning fyrir þá sem ætla sér að fjalla um þjóðhagfræði og hlutverk hins opinbera, hversu sammála eða ósammála sem þeir eru höfundinum.

  10. Projected impact of twenty-first century ENSO changes on rainfall over Central America and northwest South America from CMIP5 AOGCMs

    Science.gov (United States)

    Steinhoff, Daniel F.; Monaghan, Andrew J.; Clark, Martyn P.

    2015-03-01

    Due to the importance that the El Niño-Southern Oscillation (ENSO) has on rainfall over the tropical Americas, future changes in ENSO characteristics and teleconnections are important for regional hydroclimate. Projected changes to the ENSO mean state and characteristics, and the resulting impacts on rainfall anomalies over Central America, Colombia, and Ecuador during the twenty-first century are explored for several forcing scenarios using a suite of coupled atmosphere-ocean global climate models (AOGCMs) from the fifth phase of the Coupled Model Intercomparison Project (CMIP5). Mean-state warming of eastern tropical Pacific sea surface temperatures, drying of Central America and northern Colombia, and wetting of southwest Colombia and Ecuador are consistent with previous studies that used earlier versions of the AOGCMs. Current and projected future characteristics of ENSO (frequency, duration, amplitude) show a wide range of values across the various AOGCMs. The magnitude of ENSO-related rainfall anomalies are currently underestimated by most of the models, but the model ensembles generally simulate the correct sign of the anomalies across the seasons around the peak ENSO effects. While the models capture the broad present-day ENSO-related rainfall anomalies, there is not a clear sense of projected future changes in the precipitation anomalies.

  11. 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

  12. 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

  13. Future projections of synoptic weather types over the Arabian Peninsula during the twenty-first century using an ensemble of CMIP5 models

    Science.gov (United States)

    El Kenawy, Ahmed M.; McCabe, Matthew F.

    2016-07-01

    An assessment of future change in synoptic conditions over the Arabian Peninsula throughout the twenty-first century was performed using 20 climate models from the Coupled Model Intercomparison Project Phase 5 (CMIP5) database. We employed the mean sea level pressure (SLP) data from model output together with NCEP/NCAR reanalysis data and compared the relevant circulation types produced by the Lamb classification scheme for the base period 1975-2000. Overall, model results illustrated good agreement with the reanalysis, albeit with a tendency to underestimate cyclonic (C) and southeasterly (SE) patterns and to overestimate anticyclones and directional flows. We also investigated future projections for each circulation-type during the rainy season (December-May) using three Representative Concentration Pathways (RCPs), comprising RCP2.6, RCP4.5, and RCP8.5. Overall, two scenarios (RCP4.5 and RCP 8.5) revealed a statistically significant increase in weather types favoring above normal rainfall in the region (e.g., C and E-types). In contrast, weather types associated with lower amounts of rainfall (e.g., anticyclones) are projected to decrease in winter but increase in spring. For all scenarios, there was consistent agreement on the sign of change (i.e., positive/negative) for the most frequent patterns (e.g., C, SE, E and A-types), whereas the sign was uncertain for less recurrent types (e.g., N, NW, SE, and W). The projected changes in weather type frequencies in the region can be viewed not only as indicators of change in rainfall response but may also be used to inform impact studies pertinent to water resource planning and management, extreme weather analysis, and agricultural production.

  14. Future projections of synoptic weather types over the Arabian Peninsula during the twenty-first century using an ensemble of CMIP5 models

    KAUST Repository

    El Kenawy, Ahmed M.

    2016-07-28

    An assessment of future change in synoptic conditions over the Arabian Peninsula throughout the twenty-first century was performed using 20 climate models from the Coupled Model Intercomparison Project Phase 5 (CMIP5) database. We employed the mean sea level pressure (SLP) data from model output together with NCEP/NCAR reanalysis data and compared the relevant circulation types produced by the Lamb classification scheme for the base period 1975–2000. Overall, model results illustrated good agreement with the reanalysis, albeit with a tendency to underestimate cyclonic (C) and southeasterly (SE) patterns and to overestimate anticyclones and directional flows. We also investigated future projections for each circulation-type during the rainy season (December–May) using three Representative Concentration Pathways (RCPs), comprising RCP2.6, RCP4.5, and RCP8.5. Overall, two scenarios (RCP4.5 and RCP 8.5) revealed a statistically significant increase in weather types favoring above normal rainfall in the region (e.g., C and E-types). In contrast, weather types associated with lower amounts of rainfall (e.g., anticyclones) are projected to decrease in winter but increase in spring. For all scenarios, there was consistent agreement on the sign of change (i.e., positive/negative) for the most frequent patterns (e.g., C, SE, E and A-types), whereas the sign was uncertain for less recurrent types (e.g., N, NW, SE, and W). The projected changes in weather type frequencies in the region can be viewed not only as indicators of change in rainfall response but may also be used to inform impact studies pertinent to water resource planning and management, extreme weather analysis, and agricultural production.

  15. Northern African climate at the end of the twenty-first century: an integrated application of regional and global climate models

    Energy Technology Data Exchange (ETDEWEB)

    Patricola, Christina M. [Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, NY (United States); Cook, Kerry H. [The University of Texas at Austin, Jackson School of Geosciences, Austin, TX (United States)

    2010-07-15

    A method for simulating future climate on regional space scales is developed and applied to northern Africa. Simulation with a regional model allows for the horizontal resolution needed to resolve the region's strong meridional gradients and the optimization of parameterizations and land-surface model. The control simulation is constrained by reanalysis data, and realistically represents the present day climate. Atmosphere-ocean general circulation model (AOGCM) output provides SST and lateral boundary condition anomalies for 2081-2100 under a business-as-usual emissions scenario, and the atmospheric CO{sub 2} concentration is increased to 757 ppmv. A nine-member ensemble of future climate projections is generated by using output from nine AOGCMs. The consistency of precipitation projections for the end of the twenty-first century is much greater for the regional model ensemble than among the AOGCMs. More than 77% of ensemble members produce the same sign rainfall anomaly over much of northern Africa. For West Africa, the regional model projects wetter conditions in spring, but a mid-summer drought develops during June and July, and the heat stoke risk increases across the Sahel. Wetter conditions resume in late summer, and the likelihood of flooding increases. The regional model generally projects wetter conditions over eastern Central Africa in June and drying during August through September. Severe drought impacts parts of East Africa in late summer. Conditions become wetter in October, but the enhanced rainfall does not compensate for the summertime deficit. The risk of heat stroke increases over this region, although the threat is not projected to be as great as in the Sahel. (orig.)

  16. Sub-Saharan Northern African climate at the end of the twenty-first century: forcing factors and climate change processes

    Energy Technology Data Exchange (ETDEWEB)

    Patricola, C.M. [Cornell University, Department of Earth and Atmospheric Sciences, Ithaca, NY (United States); Texas A and M University, Department of Atmospheric Sciences, College Station, TX (United States); Cook, K.H. [The University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX (United States)

    2011-09-15

    A regional climate model, the Weather Research and Forecasting (WRF) Model, is forced with increased atmospheric CO{sub 2} and anomalous SSTs and lateral boundary conditions derived from nine coupled atmosphere-ocean general circulation models to produce an ensemble set of nine future climate simulations for northern Africa at the end of the twenty-first century. A well validated control simulation, agreement among ensemble members, and a physical understanding of the future climate change enhance confidence in the predictions. The regional model ensembles produce consistent precipitation projections over much of northern tropical Africa. A moisture budget analysis is used to identify the circulation changes that support future precipitation anomalies. The projected midsummer drought over the Guinean Coast region is related partly to weakened monsoon flow. Since the rainfall maximum demonstrates a southward bias in the control simulation in July-August, this may be indicative of future summer drying over the Sahel. Wetter conditions in late summer over the Sahel are associated with enhanced moisture transport by the West African westerly jet, a strengthening of the jet itself, and moisture transport from the Mediterranean. Severe drought in East Africa during August and September is accompanied by a weakened Indian monsoon and Somali jet. Simulations with projected and idealized SST forcing suggest that overall SST warming in part supports this regional model ensemble agreement, although changes in SST gradients are important over West Africa in spring and fall. Simulations which isolate the role of individual climate forcings suggest that the spatial distribution of the rainfall predictions is controlled by the anomalous SST and lateral boundary conditions, while CO{sub 2} forcing within the regional model domain plays an important secondary role and generally produces wetter conditions. (orig.)

  17. Trends in survival of chronic lymphocytic leukemia patients in Germany and the USA in the first decade of the twenty-first century

    Directory of Open Access Journals (Sweden)

    Dianne Pulte

    2016-03-01

    Full Text Available Abstract Background Recent population-based studies in the United States of America (USA and other countries have shown improvements in survival for patients with chronic lymphocytic leukemia (CLL diagnosed in the early twenty-first century. Here, we examine the survival for patients diagnosed with CLL in Germany in 1997–2011. Methods Data were extracted from 12 cancer registries in Germany and compared to the data from the USA. Period analysis was used to estimate 5- and 10-year relative survival (RS. Results Five- and 10-year RS estimates in 2009–2011 of 80.2 and 59.5 %, respectively, in Germany and 82.4 and 64.7 %, respectively, in the USA were observed. Overall, 5-year RS increased significantly in Germany and the difference compared to the survival in the USA which slightly decreased between 2003–2005 and 2009–2011. However, age-specific analyses showed persistently higher survival for all ages except for 15–44 in the USA. In general, survival decreased with age, but the age-related disparity was small for patients younger than 75. In both countries, 5-year RS was >80 % for patients less than 75 years of age but <70 % for those age 75+. Conclusions Overall, 5-year survival for patients with CLL is good, but 10-year survival is significantly lower, and survival was much lower for those age 75+. Major differences in survival between countries were not observed. Further research into ways to increase survival for older CLL patients are needed to reduce the persistent large age-related survival disparity.

  18. An ENSO stability analysis. Part II: results from the twentieth and twenty-first century simulations of the CMIP3 models

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seon Tae [University of Hawaii at Manoa, Department of Meteorology, Honolulu, HI (United States); University of California, Department of Earth System Science, Irvine, CA (United States); Jin, Fei-Fei [University of Hawaii at Manoa, Department of Meteorology, Honolulu, HI (United States)

    2011-04-15

    In this study, a Bjerknes stability (BJ) index, proposed by Jin et al. (2006), is adopted to assess the overall stability of El Nino and Southern Oscillation (ENSO) in state-of-the-art coupled models. The twentieth and twenty-first century simulations of 12 coupled models among the coupled model intercomparison project phase 3 models used in the intergovernmental panel on climate change forth assessment report demonstrate a significant positive correlation between ENSO amplitude and ENSO stability as measured by the BJ index. The simulations also show a diversity of behavior regarding the ENSO stability among the coupled models, which can be attributed to different mean state and sensitivity of an oceanic and atmospheric response to wind and SST forcing from model to model. When respective components of the BJ index obtained from the coupled models are compared with those from observations, it is revealed that most coupled models underestimate the thermodynamic damping effect and the positive effect of the zonal advective and thermocline feedback. Under increased CO{sub 2} induced warm climate, changes, relative to the twentieth century simulations, in the damping and feedback terms responsible for the ENSO stability measured by the BJ index can be linked to mean state changes and associated atmospheric and oceanic response sensitivity changes. There is a clear multi-model trend in the damping terms and positive zonal advective feedback, thermocline feedback, and Ekman feedback terms under enhanced greenhouse gas conditions. However, the various behavior among the coupled models in competition between the positive feedback and negative damping terms in the BJ index formula prevent the formation of a definitive conclusion regarding future projections of ENSO stability using the current coupled models. (orig.)

  19. Specific Antigens by Federal Entity in Patients at the Transplant Unit of Specialities Hospital, National Medical Center Twenty-First Century, Mexico.

    Science.gov (United States)

    Hernández Rivera, J C H; Ibarra Villanueva, A; Espinoza Pérez, R; Cancino López, J D; Silva Rueda, I R; Rodríguez Gómez, R; García Covarrubias, L; Reyes Díaz, E; Pérez López, M J; Salazar Mendoza, M

    2016-03-01

    The study of the kidney transplant involves understanding the immunologic basis, such as histocompatibility and the genetic basis of a population. In Mexico, the study of the genetic basis has led to a genetic map by federal entities. We performed an HLA study with 1,276 kidney transplant patients (recipients and donors) in the Hospital of the National Medical Center Twenty-First Century, determining HLA class I (A, B, and Cw) and class II (DRβ1 and DQβ1) antigens with the use of SSOP-PCR. A descriptive analysis was conducted with measures of central tendency (mean, SD). Of 1,276 HLA patients studied, we obtained 2,552 results for each class by the composition of the 2 haplotypes, and for HLA-Cw we processed 796 patients, for a total of 1,592 antigens for this class. We found antigens specific to each federal entity, and it was found that the Federal District had the highest number of specific antigens (10) followed by Morelos (7), Querétaro and Mexico State (3 each), and Tamaulipas, Aguascalientes, Michoacán, Guerrero, Puebla, and Oaxaca (1 each). The genetic map allows us to know proportions of antigens in every state in the center and south of Mexico owing to the diversity and area of influence of the National Medical Center XXIst Century, as well as the wide number of patients. Furthermore, there are still preserved proportionally distinct genetic roots in every entity. Copyright © 2016 Elsevier Inc. All rights reserved.

  20. Sea-level rise and its possible impacts given a 'beyond 4°C world' in the twenty-first century.

    Science.gov (United States)

    Nicholls, Robert J; Marinova, Natasha; Lowe, Jason A; Brown, Sally; Vellinga, Pier; de Gusmão, Diogo; Hinkel, Jochen; Tol, Richard S J

    2011-01-13

    The range of future climate-induced sea-level rise remains highly uncertain with continued concern that large increases in the twenty-first century cannot be ruled out. The biggest source of uncertainty is the response of the large ice sheets of Greenland and west Antarctica. Based on our analysis, a pragmatic estimate of sea-level rise by 2100, for a temperature rise of 4°C or more over the same time frame, is between 0.5 m and 2 m--the probability of rises at the high end is judged to be very low, but of unquantifiable probability. However, if realized, an indicative analysis shows that the impact potential is severe, with the real risk of the forced displacement of up to 187 million people over the century (up to 2.4% of global population). This is potentially avoidable by widespread upgrade of protection, albeit rather costly with up to 0.02 per cent of global domestic product needed, and much higher in certain nations. The likelihood of protection being successfully implemented varies between regions, and is lowest in small islands, Africa and parts of Asia, and hence these regions are the most likely to see coastal abandonment. To respond to these challenges, a multi-track approach is required, which would also be appropriate if a temperature rise of less than 4°C was expected. Firstly, we should monitor sea level to detect any significant accelerations in the rate of rise in a timely manner. Secondly, we need to improve our understanding of the climate-induced processes that could contribute to rapid sea-level rise, especially the role of the two major ice sheets, to produce better models that quantify the likely future rise more precisely. Finally, responses need to be carefully considered via a combination of climate mitigation to reduce the rise and adaptation for the residual rise in sea level. In particular, long-term strategic adaptation plans for the full range of possible sea-level rise (and other change) need to be widely developed.

  1. Lights, camera, action research: The effects of didactic digital movie making on students' twenty-first century learning skills and science content in the middle school classroom

    Science.gov (United States)

    Ochsner, Karl

    Students are moving away from content consumption to content production. Short movies are uploaded onto video social networking sites and shared around the world. Unfortunately they usually contain little to no educational value, lack a narrative and are rarely created in the science classroom. According to new Arizona Technology standards and ISTE NET*S, along with the framework from the Partnership for 21st Century Learning Standards, our society demands students not only to learn curriculum, but to think critically, problem solve effectively, and become adept at communicating and collaborating. Didactic digital movie making in the science classroom may be one way that these twenty-first century learning skills may be implemented. An action research study using a mixed-methods approach to collect data was used to investigate if didactic moviemaking can help eighth grade students learn physical science content while incorporating 21st century learning skills of collaboration, communication, problem solving and critical thinking skills through their group production. Over a five week period, students researched lessons, wrote scripts, acted, video recorded and edited a didactic movie that contained a narrative plot to teach a science strand from the Arizona State Standards in physical science. A pretest/posttest science content test and KWL chart was given before and after the innovation to measure content learned by the students. Students then took a 21st Century Learning Skills Student Survey to measure how much they perceived that communication, collaboration, problem solving and critical thinking were taking place during the production. An open ended survey and a focus group of four students were used for qualitative analysis. Three science teachers used a project evaluation rubric to measure science content and production values from the movies. Triangulating the science content test, KWL chart, open ended questions and the project evaluation rubric, it

  2. Globalização social: desafio do século XXI GLOBALIZATION SOCIAL: CHALLENGE OF THE TWENTY-FIRST CENTURY

    Directory of Open Access Journals (Sweden)

    Antônio Carlos dos Santos

    2010-08-01

    Full Text Available A crítica de muitos à globalização é conseqüência dos rumos que ela está tomando. Embora a globalização seja um processo dinâmico em andamento, o seu avanço tem ocorrido de forma desequilibrada, gerando instabilidade política, econômica e social em várias regiões do planeta. O presente trabalho procura, de forma teórica, mostrar a falta da globalização social como um dos fatores que tem provocado desequilíbrio na dinâmica do processo de globalização. Pelo lado econômico, observa-se que a globalização ocorre de forma acelerada e já alcança os mais distantes pontos da face da Terra, ao passo que, pelo lado social, observa-se que a globalização está ausente em algumas regiões e, em outro tanto, ela ocorre de forma lenta e sem muito interesse. De nada vale os benefícios da globalização econômica se não existir a globalização social. Esse e o desafio do século XXI.The criticism of many of globalization is a consequence of directions it is taking. While globalization is a dynamic process in progress, its progress has occurred so unbalanced, creating politicalinstability, economic and social development in various regions of the planet. This paper demand, so theoretically, show the lack of social globalisation as one of the factors that have causedimbalance in the dynamics of the globalization process. On the economic side there is that globalization occurs so rapidly and have reached the most distant points of the face of theEarth, while the social side, there is that globalisation is absent in some regions, and in another both, it happens so slowly and without much interest. It is not worth the benefits of economicglobalization if there is the social globalisation. That and the challenge of the twenty-first century.

  3. Future change of climate in South America in the late twenty-first century: intercomparison of scenarios from three regional climate models

    Energy Technology Data Exchange (ETDEWEB)

    Marengo, Jose A.; Valverde, Maria C.; Torres, Roger R.; Santos, Daniel C. [Centro de Ciencia do Sistema Terrestre, Instituto Nacional de Pesquisas Espaciais, CCST/INPE, Sao Paulo, SP (Brazil); Ambrizzi, Tercio; Rocha, Rosmeri P. da [University of Sao Paulo, IAG-DCA/USP, Department of Atmospheric Sciences, Sao Paulo, SP (Brazil); Alves, Lincoln M. [Centro de Previsao de Tempo e Estudos Climaticos, Instituto Nacional de Pesquisas Espaciais, CPTEC/INPE, Sao Paulo, SP (Brazil); Cuadra, Santiago V. [Universidade Federal de Vicosa, Vicosa, MG (Brazil); Ferraz, Simone E.T. [Universidade Federal de Santa Maria, Santa Maria, RS (Brazil)

    2010-11-15

    Regional climate change projections for the last half of the twenty-first century have been produced for South America, as part of the CREAS (Cenarios REgionalizados de Clima Futuro da America do Sul) regional project. Three regional climate models RCMs (Eta CCS, RegCM3 and HadRM3P) were nested within the HadAM3P global model. The simulations cover a 30-year period representing present climate (1961-1990) and projections for the IPCC A2 high emission scenario for 2071-2100. The focus was on the changes in the mean circulation and surface variables, in particular, surface air temperature and precipitation. There is a consistent pattern of changes in circulation, rainfall and temperatures as depicted by the three models. The HadRM3P shows intensification and a more southward position of the subtropical Pacific high, while a pattern of intensification/weakening during summer/winter is projected by the Eta CCS/RegCM3. There is a tendency for a weakening of the subtropical westerly jet from the Eta CCS and HadRM3P, consistent with other studies. There are indications that regions such of Northeast Brazil and central-eastern and southern Amazonia may experience rainfall deficiency in the future, while the Northwest coast of Peru-Ecuador and northern Argentina may experience rainfall excesses in a warmer future, and these changes may vary with the seasons. The three models show warming in the A2 scenario stronger in the tropical region, especially in the 5 N-15 S band, both in summer and especially in winter, reaching up to 6-8 C warmer than in the present. In southern South America, the warming in summer varies between 2 and 4 C and in winter between 3 and 5 C in the same region from the 3 models. These changes are consistent with changes in low level circulation from the models, and they are comparable with changes in rainfall and temperature extremes reported elsewhere. In summary, some aspects of projected future climate change are quite robust across this set of

  4. Future change of climate in South America in the late twenty-first century: intercomparison of scenarios from three regional climate models

    Science.gov (United States)

    Marengo, Jose A.; Ambrizzi, Tercio; Da Rocha, Rosmeri P.; Alves, Lincoln M.; Cuadra, Santiago V.; Valverde, Maria C.; Torres, Roger R.; Santos, Daniel C.; Ferraz, Simone E. T.

    2010-11-01

    Regional climate change projections for the last half of the twenty-first century have been produced for South America, as part of the CREAS (Cenarios REgionalizados de Clima Futuro da America do Sul) regional project. Three regional climate models RCMs (Eta CCS, RegCM3 and HadRM3P) were nested within the HadAM3P global model. The simulations cover a 30-year period representing present climate (1961-1990) and projections for the IPCC A2 high emission scenario for 2071-2100. The focus was on the changes in the mean circulation and surface variables, in particular, surface air temperature and precipitation. There is a consistent pattern of changes in circulation, rainfall and temperatures as depicted by the three models. The HadRM3P shows intensification and a more southward position of the subtropical Pacific high, while a pattern of intensification/weakening during summer/winter is projected by the Eta CCS/RegCM3. There is a tendency for a weakening of the subtropical westerly jet from the Eta CCS and HadRM3P, consistent with other studies. There are indications that regions such of Northeast Brazil and central-eastern and southern Amazonia may experience rainfall deficiency in the future, while the Northwest coast of Peru-Ecuador and northern Argentina may experience rainfall excesses in a warmer future, and these changes may vary with the seasons. The three models show warming in the A2 scenario stronger in the tropical region, especially in the 5°N-15°S band, both in summer and especially in winter, reaching up to 6-8°C warmer than in the present. In southern South America, the warming in summer varies between 2 and 4°C and in winter between 3 and 5°C in the same region from the 3 models. These changes are consistent with changes in low level circulation from the models, and they are comparable with changes in rainfall and temperature extremes reported elsewhere. In summary, some aspects of projected future climate change are quite robust across this set of

  5. Designing a Truly Integrated (Onsite and Online) Conference: Concept, Processes, Solutions

    CERN Document Server

    Botchkarev, Alexei; Rasouli, Hamed

    2010-01-01

    Web conferencing tools have entered the mainstream of business applications. Using web conferencing for IEEE conferences has a good potential of adding value to both organizers and participants. Authors propose a concept of Truly Integrated Conference (TIC) according to which a multi-point worldwide-distributed network of conference online authors/participants will enhance the standard (centralized) IEEE conference model, which requires attendance of the participants in person at the main conference location. The concept entails seamless integration of the onsite and online conference systems, including data/presentation, video, audio channels. Benefits and challenges of the TIC concept are analyzed. Requirements to the web conferencing system capable of supporting the TIC conference are presented and reviewed against commercial web conferencing tools. Case study of the IEEE Toronto International Conference ? Science and Technology for Humanity, which was the first realization of TIC, is presented which analy...

  6. Bridging the climate-induced water gap in the twenty-first century: adaptation support based on water supply, demand, adaptation and financing.

    Science.gov (United States)

    Straatsma, Menno; Droogers, Peter; Brandsma, Jaïrus; Buytaert, Wouter; Karssenberg, Derek; Van Beek, Rens; Wada, Yoshihide; Sutanudjaja, Edwin; Vitolo, Claudia; Schmitz, Oliver; Meijer, Karen; Van Aalst, Maaike; Bierkens, Marc

    2014-05-01

    Water scarcity affects large parts of the world. Over the course of the twenty-first century, water demand is likely to increase due to population growth and associated food production, and increased economic activity, while water supply is projected to decrease in many regions due to climate change. Despite recent studies that analyze the effect of climate change on water scarcity, e.g. using climate projections under representative concentration pathways (RCP) of the fifth assessment report of the IPCC (AR5), decision support for closing the water gap between now and 2100 does not exist at a meaningful scale and with a global coverage. In this study, we aimed (i) to assess the joint impact of climatic and socio-economic change on water scarcity, (ii) to integrate impact and potential adaptation in one workflow, (iii) to prioritize adaptation options to counteract water scarcity based on their financial, regional socio-economic and environmental implications, and (iv) to deliver all this information in an integrated user-friendly web-based service. To enable the combination of global coverage with local relevance, we aggregated all results for 1604 water provinces (food producing units) delineated in this study, which is five times smaller than previous food producing units. Water supply was computed using the PCR-GLOBWB hydrological and water resources model, parameterized at 5 arcminutes for the whole globe, excluding Antarctica and Greenland. We ran PCR-GLOBWB with a daily forcing derived from five different GCM models from the CMIP5 (GFDL-ESM2M, Hadgem2-ES, IPSL-CMA5-LR, MIROC-ESM-CHEM, NorESM1-M) that were bias corrected using observation-based WATCH data between 1960-1999. For each of the models all four RCPs (RCP 2.6, 4.5, 6.0, and 8.5) were run, producing the ensemble of 20 future projections. The blue water supply was aggregated per month and per water province. Industrial, domestic and irrigation water demands were computed for a limited number of

  7. 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

  8. Twenty-First Century Educational Theory and the Challenges of Modern Education: Appealing to the Heritage of the General Teaching Theory of the Secondary Educational Curriculum and the Learning Process

    Science.gov (United States)

    Klarin, Mikhail V.

    2016-01-01

    The article presents an analysis of educational theory in light of the challenges confronting education in the twenty-first century. The author examines how our ideas about the methods for managing the transmission of culture, the subject of education, and the consequences of these changes for the theory of education have changed. The author…

  9. Proposal of an ISO/IEEE11073 platform for healthcare telemonitoring: plug-and-play solution with new use cases

    OpenAIRE

    M. Galarraga; Martínez, I; Serrano, L.; Toledo,Paula; Escayola, J.; Fernández, Julián; Jiménez-Fernández, S.; Led, S.; Martínez-Espronceda, M.; Viruete, E.; García, José

    2007-01-01

    Proceeding of: 29th Annual International Conference of IEEE Engineering in Medicine and Biology Society, (EMBS 2007), Lyon, France, 23-26th august 2007. Remote patient monitoring in e-Health is everyday closer to be a mature technology / service. However, there is still a lack of development in areas such as standardization of the sensor’s communication interface, integration into Electronic Healthcare Record systems or incorporation in ambient-intelligent scenarios. This work identifies a...

  10. 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.

  11. 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.

  12. 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...

  13. 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…

  14. 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...

  15. 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…

  16. Global Cropland Area Database (GCAD) derived from Remote Sensing in Support of Food Security in the Twenty-first Century: Current Achievements and Future Possibilities

    Science.gov (United States)

    Teluguntla, Pardhasaradhi G.; Thenkabail, Prasad S.; Xiong, Jun N.; Gumma, Murali Krishna; Giri, Chandra; Milesi, Cristina; Ozdogan, Mutlu; Congalton, Russ; Tilton, James; Sankey, Temuulen Tsagaan; Massey, Richard; Phalke, Aparna; Yadav, Kamini

    2015-01-01

    to biofuels (Bindraban et al., 2009), limited water resources for irrigation expansion (Turral et al., 2009), limits on agricultural intensifications, loss of croplands to urbanization (Khan and Hanjra, 2008), increasing meat consumption (and associated demands on land and water) (Vinnari and Tapio, 2009), environmental infeasibility for cropland expansion (Gordon et al., 2009), and changing climate have all put pressure on our continued ability to sustain global food security in the twenty-first century. So, how does the World continue to meet its food and nutrition needs?. Solutions may come from bio-technology and precision farming, however developments in these fields are not currently moving at rates that will ensure global food security over next few decades. Further, there is a need for careful consideration of possible harmful effects of bio-technology. We should not be looking back 30– 50 years from now, like we have been looking back now at many mistakes made during the green revolution. During the green revolution the focus was only on getting more yield per unit area. Little thought was put about serious damage done to our natural environments, water resources, and human health as a result of detrimental factors such as uncontrolled use of herbicides-pesticides-nutrients, drastic groundwater mining, and salinization of fertile soils due to over irrigation. Currently, there is talk of a “second green revolution” or even an “ever green revolution”, but clear ideas on what these terms actually mean are still debated and are evolving. One of the biggest issues that are not given adequate focus is the use of large quantities of water for food production. Indeed, an overwhelming proportion (60-90%) of all human water use in India goes for producing their food (Falkenmark, M., & Rockström, 2006). But such intensive water use for food production is no longer tenable due to increasing pressure for water use alternatives such as increasing urbanization

  17. 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.

  18. 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.

  19. Vispubdata.org: A Metadata Collection About IEEE Visualization (VIS) Publications.

    Science.gov (United States)

    Isenberg, Petra; Heimerl, Florian; Koch, Steffen; Isenberg, Tobias; Xu, Panpan; Stolper, Charles D; Sedlmair, Michael; Chen, Jian; Moller, Torsten; Stasko, John

    2017-09-01

    We have created and made available to all a dataset with information about every paper that has appeared at the IEEE Visualization (VIS) set of conferences: InfoVis, SciVis, VAST, and Vis. The information about each paper includes its title, abstract, authors, and citations to other papers in the conference series, among many other attributes. This article describes the motivation for creating the dataset, as well as our process of coalescing and cleaning the data, and a set of three visualizations we created to facilitate exploration of the data. This data is meant to be useful to the broad data visualization community to help understand the evolution of the field and as an example document collection for text data visualization research.

  20. 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.

  1. 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.

  2. 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 ...

  3. Plants science that supports the hope in the twenty-first century. We control the plant freely or not; 21 seiki no kibo wo sasaeru shokubutsu kagaku. Wareware wa shokubutsu wo jizai ni ayatsurerunoka?

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Shigeo

    1999-10-01

    It becomes a basic factor that living and rich food practice are enjoyed in natural environment which senses peace of mind, while the cultural convenience by the clean energy is maintained, when the state in which people in the twenty-first century comfortably live is assumed. One of the ultimate goals for guaranteeing our comfortable life in the scientific research should be put for the establishment of the technology which swimmingly raises the function of the higher plant. The prosperity of future mankind also depends on the utilization of the vegetation in every face such as food security, maintenance of natural environment, solution of energy problem. (NEDO)

  4. Performing the comic side of bodily abjection: A study of twenty-first century female stand-up comedy in a multi-cultural and multi-racial Britain

    OpenAIRE

    Blunden, Pamela

    2011-01-01

    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. This thesis is a socio-cultural study of the development of female stand-up comedy in the first decade of the twenty-first century within a multi-racial and multi-cultural Britain. It also engages with the theory and practice of performance and asks the question: ‘In what ways can it be said that female stand-up comics perform the comic side of bodily abjection?’ This question is applied to t...

  5. 2nd International Conference on Advanced Intelligent Systems and Informatics

    CERN Document Server

    Shaalan, Khaled; Gaber, Tarek; Azar, Ahmad; Tolba, M

    2017-01-01

    This book gathers the proceedings of the 2nd International Conference on Advanced Intelligent Systems and Informatics (AISI2016), which took place in Cairo, Egypt during October 24–26, 2016. This international interdisciplinary conference, which highlighted essential research and developments in the field of informatics and intelligent systems, was organized by the Scientific Research Group in Egypt (SRGE) and sponsored by the IEEE Computational Intelligence Society (Egypt chapter) and the IEEE Robotics and Automation Society (Egypt Chapter). The book’s content is divided into four main sections: Intelligent Language Processing, Intelligent Systems, Intelligent Robotics Systems, and Informatics.

  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. Twenty-First-Century Aerial Mining

    Science.gov (United States)

    2015-04-01

    blockade (fig. 3).19 It has two parallel inbound and outbound shipping channels, each 1,200 feet wide with a dredged depth averaging 40 feet. East...sufficient excess capability to accept a grinding war of attri- tion in the island interior. The duration and cost of an operation might well have been...height in the Second World War as part of Operation Starvation against Japan. The value of this low- cost , persistent weapons system has been

  9. A twenty first century approach to inspection

    Energy Technology Data Exchange (ETDEWEB)

    Lewis, R.K. [R. Brooks Associates, Inc., Williamson, NY (United States)

    1998-12-31

    Over the past ten years, visual inspection tooling has changed dramatically. Driven by both the consumer and industrial vision markets, CCD technology is advancing in pace with computer technology. Just ten years ago, cameras were mostly tube type, very expensive, black and white and large in diameter. There were few practical inspection uses. Times have changed. High resolution images are now achievable through a 1 millimeter probe. Very high resolution cameras are available in 6 millimeter diameter. Advancements in robotic, remote positioning now allows one to access previously inaccessible locations. Visual recognition of deposits is now a reality. A recent trip to Mars is testimony to this. Visual inspection is becoming one of the most worthwhile, cost effective technologies for inspections in the world. Current visual technology, and the advancements to come, will save companies billions of dollars.

  10. Resettlement in the twenty-first century

    Directory of Open Access Journals (Sweden)

    Anthony Oliver-Smith

    2014-02-01

    Full Text Available Deficiencies in planning, preparation and implementation of involuntary resettlement and relocation projects have produced far more failures than successes. Indeed, it is questionable whether resettlement as currently practised could be categorised as a form of protection.

  11. Twenty-First Century Space Propulsion Study

    Science.gov (United States)

    1990-10-01

    dependence of coherent radiation from crystals", Physical Review Letters 58, 1176-1179 (23 March 1987). 11 Y. Aharonov , F.T. Avignone, III, A. Casher , and...B-i C THE WEBER EFFECT ....................................... C-i D 2020 A.D. TECHNOLOGIES FOR AFAL...most energetic fuel known. The most effective particle of antimatter for propulsion is the antiproton rather than the antielectron. To make a compact

  12. Departmentalization and Twenty-First Century Skills

    Science.gov (United States)

    Watts, Toy Coles

    2012-01-01

    The purpose of this study was to investigate the relationship between school organizational style and student outcomes. The research questions that guided this study were, "Is there a difference in mathematical performance of fourth graders who receive departmentalized instruction as compared to fourth grade students who receive…

  13. Twenty-First Century Pathologists' Advocacy.

    Science.gov (United States)

    Allen, Timothy Craig

    2017-07-01

    Pathologists' advocacy plays a central role in the establishment of continuously improving patient care quality and patient safety, and in the maintenance and progress of pathology as a profession. Pathology advocacy's primary goal is the betterment of patient safety and quality medical care; however, payment is a necessary and appropriate component to both, and has a central role in advocacy. Now is the time to become involved in pathology advocacy; the Medicare Access and Children's Health Insurance Program (CHIP) Reauthorization Act of 2015 (MACRA) and the Protecting Access to Medicare Act of 2014 (PAMA) are 2 of the most consequential pieces of legislation impacting the pathology and laboratory industry in the last 20 years. Another current issue of far-reaching impact for pathologists is balance billing, and yet many pathologists have little or no understanding of balance billing. Pathologists at all stages of their careers, and in every professional setting, need to participate. Academic pathologists have a special obligation to, if not become directly involved in advocacy, at least have a broad and current understanding of those issues, as well as the need and responsibility of pathologists to actively engage in advocacy efforts to address them, in order to teach residents the place of advocacy, and its value, as an inseparable and indispensable component of their professional responsibilities.

  14. 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.

  15. 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.

  16. 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)

  17. Real Time Conference 2016 Overview

    Science.gov (United States)

    Luchetta, Adriano

    2017-06-01

    This is a special issue of the IEEE Transactions on Nuclear Science containing papers from the invited, oral, and poster presentation of the 20th Real Time Conference (RT2016). The conference was held June 6-10, 2016, at Centro Congressi Padova “A. Luciani,” Padova, Italy, and was organized by Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA) and the Istituto Nazionale di Fisica Nucleare. The Real Time Conference is multidisciplinary and focuses on the latest developments in real-time techniques in high-energy physics, nuclear physics, astrophysics and astroparticle physics, nuclear fusion, medical physics, space instrumentation, nuclear power instrumentation, general radiation instrumentation, and real-time security and safety. Taking place every second year, it is sponsored by the Computer Application in Nuclear and Plasma Sciences technical committee of the IEEE Nuclear and Plasma Sciences Society. RT2016 attracted more than 240 registrants, with a large proportion of young researchers and engineers. It had an attendance of 67 students from many countries.

  18. 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.

  19. 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.

  20. 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.

  1. THE DISPUTE BETWEEN POLITICAL THEOLOGY AND THE POLITICS OF THEOLOGY IN THE TWENTY-FIRST CENTURY ON THE MEANINGS OF THE POSTMODERN GLOBALIZING AND INDIVIDUALISTIC SOCIETY AND THE CHRISTIAN PERSONALIST GLOBALITY

    Directory of Open Access Journals (Sweden)

    Stelian MANOLACHE

    2016-05-01

    Full Text Available Upon the dawn of postmodernity, in the twenty-first century, we witness the emergence of a new way of thinking and of new forms of culture and life, under the ideology of globalism, whose dominance is given by the practicality and utility related to civilization, and under globality, which is the cultural aspect of globalization, pertaining to the field of culture. The two dimensions of globalization and globality, civilizational and cultural, will (requestion the principle relationship between Christianity and the new postmodern globalizing utopia, requiring to (reconsider the sense and presence of Christianity within the world, and the appropriate sociological figure of the Church, within the new reality of global and globalized humanity, in the postmodern public space. This paper deals with this ideology - globalism and the cultural manifestation of globality, and with the Orthodox answer to the new challenge of individualism and postmodern globalizing (neocollectivism.

  2. 对《21世纪大学英语》性别角色的研究%Research on the gender roles of"twenty-first Century university English"

    Institute of Scientific and Technical Information of China (English)

    王莉

    2013-01-01

    The gender image in the university English teaching material will influence the gender consciousness of college students of life transition time, this paper uses content analysis method to study the gender roles of"twenty-first Century university English", found that gender differences and gender stereotype exists in impression material.%大学英语教材中的性别形象会潜移默化的影响处于人生转折期的大学生的性别意识,因此本文用内容分析的方法对《21世纪大学英语》教材中的性别角色进行研究,发现教材中存在性别性别差异和性别刻板印象。

  3. THE DISPUTE BETWEEN POLITICAL THEOLOGY AND THE POLITICS OF THEOLOGY IN THE TWENTY-FIRST CENTURY ON THE MEANINGS OF THE POSTMODERN GLOBALIZING AND INDIVIDUALISTIC SOCIETY AND THE CHRISTIAN PERSONALIST GLOBALITY

    Directory of Open Access Journals (Sweden)

    Stelian MANOLACHE

    2016-05-01

    Full Text Available Upon the dawn of postmodernity, in the twenty-first century, we witness the emergence of a new way of thinking and of new forms of culture and life, under the ideology of globalism, whose dominance is given by the practicality and utility related to civilization, and under globality, which is the cultural aspect of globalization, pertaining to the field of culture. The two dimensions of globalization and globality, civilizational and cultural, will (requestion the principle relationship between Christianity and the new postmodern globalizing utopia, requiring to (reconsider the sense and presence of Christianity within the world, and the appropriate sociological figure of the Church, within the new reality of global and globalized humanity, in the postmodern public space. This paper deals with this ideology - globalism and the cultural manifestation of globality, and with the Orthodox answer to the new challenge of individualism and postmodern globalizing (neocollectivism.

  4. 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.

  5. 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.

  6. 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.

  7. 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

  8. 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...

  9. 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…

  10. 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...

  11. 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...

  12. 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…

  13. 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

  14. Women in biomedical engineering and health informatics and its impact on gender representation for accepted publications at IEEE EMBC 2007.

    Science.gov (United States)

    McGregor, Carolyn; Smith, Kathleen P; Percival, Jennifer

    2008-01-01

    The study of women within the professions of Engineering and Computer Science has consistently been found to demonstrate women as a minority within these professions. However none of that previous work has assessed publication behaviours based on gender. This paper presents research findings on gender distribution of authors of accepted papers for the IEEE Engineering and Medicine Society annual conference for 2007 (EMBC '07) held in Lyon, France. This information is used to present a position statement of the current state of gender representation for conference publication within the domain of biomedical engineering and health informatics. Issues in data preparation resulting from the lack of inclusion of gender in information gathered from accepted authors are presented and discussed.

  15. 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...

  16. 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...

  17. Identification and future description of warming signatures over Pakistan with special emphasis on evolution of CO2 levels and temperature during the first decade of the twenty-first century.

    Science.gov (United States)

    Haider, Khadija; Khokhar, Muhammad Fahim; Chishtie, Farrukh; RazzaqKhan, Waseem; Hakeem, Khalid Rehman

    2017-03-01

    Like other developing countries, Pakistan is also facing changes in temperature per decade and other climatic abnormalities like droughts and torrential rains. In order to assess and identify the extent of temperature change over Pakistan, the whole Pakistan was divided into five climatic zones ranging from very cold to hot and dry climates. Similarly, seasons in Pakistan are defined on the basis of monsoon variability as winter, pre-monsoon, monsoon, and post-monsoon. This study primarily focuses on the comparison of surface temperature observations from Pakistan Meteorological Department (PMD) network with PRECIS (Providing Regional Climates for Impacts Studies) model simulations. Results indicate that PRECIS underestimates the temperature in Northern Pakistan and during the winter season. However, there exists a fair agreement between PRECIS output and observed datasets in the lower plain and hot areas of the country. An absolute increase of 0.07 °C is observed in the mean temperature over Pakistan during the time period of 1951-2010. Especially, the increase is more significant (0.7 °C) during the last 14 years (1997-2010). Moreover, SCIAMACHY observations were used to explore the evolution of atmospheric CO2 levels in comparison to temperature over Pakistan. CO2 levels have shown an increasing trend during the first decade of the twenty-first century.

  18. Using a global climate model to evaluate the influences of water vapor, snow cover and atmospheric aerosol on warming in the Tibetan Plateau during the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Rangwala, Imtiaz [Rutgers University, Department of Environmental Sciences, New Brunswick, NJ (United States); Miller, James R. [Rutgers University, Institute of Marine and Coastal Sciences, New Brunswick (United States); Russell, Gary L. [NASA Goddard Institute for Space Studies, New York (United States); Xu, Ming [Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, Beijing (China); Rutgers University, Department of Ecology, Evolution and Natural Resources, New Brunswick (United States)

    2010-05-15

    We examine trends in climate variables and their interrelationships over the Tibetan Plateau using global climate model simulations to elucidate the mechanisms for the pattern of warming observed over the plateau during the latter half of the twentieth century and to investigate the warming trend during the twenty-first century under the SRES A1B scenario. Our analysis suggests a 4 C warming over the plateau between 1950 and 2100. The largest warming rates occur during winter and spring. For the 1961-2000 period, the simulated warming is similar to the observed trend over the plateau. Moreover, the largest warming occurs at the highest elevation sites between 1950 and 2100. We find that increases in (1) downward longwave radiation (DLR) influenced by increases in surface specific humidity (q), and (2) absorbed solar radiation (ASR) influenced by decreases in snow cover extent are, in part, the reason for a large warming trend over the plateau, particularly during winter and spring. Furthermore, elevation-based increases in DLR (influenced by q) and ASR (influenced by snow cover and atmospheric aerosols) appear to affect the elevation dependent warming trend simulated in the model. (orig.)

  19. 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.

  20. 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.

  1. 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。

  2. 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...

  3. 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 ...

  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. 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?

  6. 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.

  7. Climate-related uncertainties in projections of the twenty-first century terrestrial carbon budget: off-line model experiments using IPCC greenhouse-gas scenarios and AOGCM climate projections

    Energy Technology Data Exchange (ETDEWEB)

    Ito, Akihiko [Japan Agency for Marine-Earth Science and Technology, Frontier Research Center for Global Change, Yokohama (Japan)

    2005-04-01

    A terrestrial ecosystem model (Sim-CYCLE) was driven by multiple climate projections to investigate uncertainties in predicting the interactions between global environmental change and the terrestrial carbon cycle. Sim-CYCLE has a spatial resolution of 0.5 , and mechanistically evaluates photosynthetic and respiratory CO{sub 2} exchange. Six scenarios for atmospheric-CO{sub 2} concentrations in the twenty-first century, proposed by the Intergovernmental Panel on Climate Change, were considered. For each scenario, climate projections by a coupled atmosphere-ocean general circulation model (AOGCM) were used to assess the uncertainty due to socio-economic predictions. Under a single CO{sub 2} scenario, climate projections with seven AOGCMs were used to investigate the uncertainty stemming from uncertainty in the climate simulations. Increases in global photosynthesis and carbon storage differed considerably among scenarios, ranging from 23 to 37% and from 24 to 81 Pg C, respectively. Among the AOGCM projections, increases ranged from 26 to 33% and from 48 to 289 Pg C, respectively. There were regional heterogeneities in both climatic change and carbon budget response, and different carbon-cycle components often responded differently to a given environmental change. Photosynthetic CO{sub 2} fixation was more sensitive to atmospheric CO{sub 2}, whereas soil carbon storage was more sensitive to temperature. Consequently, uncertainties in the CO{sub 2} scenarios and climatic projections may create additional uncertainties in projecting atmospheric-CO{sub 2} concentrations and climates through the interactive feedbacks between the atmosphere and the terrestrial ecosystem. (orig.)

  8. 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

  9. 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

  10. IEEE Conference Record of 1976 Twelfth Modulator Symposium, New York City, 4-5 February 1976.

    Science.gov (United States)

    1976-01-01

    Nigel S. Nicholls Royal Radar Establishment. U.K. David L. Pruitt RCA David V. Turnquist EG&G Inc. Richard L. Verga U.S. Air Force Aero Propulsion...Richard L Verga . Jerrell M. Turner. Wright-Patterson Air Force Base ............................................ 24 Symmetrical Double-Ended Thyratrons In...190 Compact. Ultra High Density. Radar Power Amplifier. Giovanni Scench 4 Paolo Por:io

  11. IEEE Conference Record of 1980 Fourteenth Pulse Power Modulator Symposium, 3-5 June 1980.

    Science.gov (United States)

    1980-01-01

    the silicone insulator to Stowers, and P. Koert, Development of a prevent tracking. As an aside, the capac- Plasma Retropulse Shutter for Shiva and...negte tetrodes, the original deign was intended to make use of specially- direction is re tur current through the backwing dio Filure 9H developed higmu...output of the prototype Compulsator voltage across the lamps was monitored with a was designed to drive sixteen parallel Shiva differential pair of

  12. IEEE Conference Record of 1982 Fifteenth Power Modulator Symposium, 14-16 June 1982.

    Science.gov (United States)

    1982-01-01

    early time of the Gas Discharges," Institut fuer Plasma Physik, discharge is insufficient or does not contribute to Garching bei Muenchen, December 1969...34 Max Planck Inst. fur Plasmaphysik Garching , bei Munchen IFP? 4/72 (Dec, 1969) 88 Blow,. - AD-A119 664 PALISADES INST FOR RESEARCH SERVICES INC NEW...uncontrolled emission of uv radiation MJVDPLAMEa DCC -.- 4IiI K lss Iv:, :t Ilog: SOURCE UY RA --’hOO P1"_ the voltage across a matched 1 .Q Fig. 7

  13. Proceedings of the 1987 IEEE particle accelerator conference: Accelerator engineering and technology

    Energy Technology Data Exchange (ETDEWEB)

    Di Donato, S.; Di Mauro, S.; Mamoli, A.; Rowland, L.P.

    1988-01-01

    This book consists of 22 papers. Some of the titles are: The Inherited Ataxias; Toward a Molecular Understanding of Ornithine Transcarbamylase Deficiency; Inherited Neuropathies Related to Disorders of Lipid Metabolism; DMD Carrier Detection and Prenatal Diagnosis via Recombinant DNA Methods; Genetic Strategies for Neuromuscular Diseases; and Attempts to Identify the Chromosomal Localization of the Friedreich's Ataxia Locus.

  14. 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.

  15. MILCOM '89 - IEEE Military Communications Conference, Boston, MA, Oct. 15-18, 1989, Conference Record. Volumes 1, 2, & 3

    Science.gov (United States)

    Various papers on the interoperability, survivability, and security of military communications are presented. The general topics addressed include: performance of frequency-hopping systems, tactical networks, HF communications, emerging communications technologies, spread-spectrum multiple access, forward error correction coding, network routing and analysis, optical communications, digital signal processing for military communications, advanced antenna techniques, detectability of communication signals, network protocols, meteor burst communications, SATCOM systems and performance, tutorial communications system performance design, interference suppression, error control coding, VLF/LF communications, residue number system applications, trellis-coded modulation, advanced topics in communications, survivable communication networks, fading multipath channels and compensation techniques, RF and HEMT technology, update on tutorial public key cryptography, network architecture, advanced topics in modulation and coding, HF channel measurements and modeling, acquisition and synchronization in spread spectrum systems, military system applications and performance.

  16. 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.

  17. International Conference on Systems Science 2013

    CERN Document Server

    Grzech, Adam; Swiątek, Paweł; Tomczak, Jakub

    2014-01-01

    The International Conference on Systems Science 2013 (ICSS 2013) was the 18th event of the series of international scientific conferences for researchers and practitioners in the fields of systems science and systems engineering. The conference took place in Wroclaw, Poland during September 10-12, 2013 and was organized  by Wroclaw University of Technology and co-organized by: Committee of Automatics and Robotics of Polish Academy of Sciences, Committee of Computer Science of Polish Academy of Sciences and Polish Section of IEEE. The papers included in the proceedings cover the following topics: Control Theory, Databases and Data Mining, Image and Signal Processing, Machine Learning, Modeling and Simulation, Operational Research, Service Science, Time series and System Identification. The accepted and presented papers highlight new trends and challenges in systems science and systems engineering.

  18. 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.

  19. Nostradamus conference

    CERN Document Server

    Rössler, Otto; Snášel, Václav; Abraham, Ajith; Corchado, Emilio; Nostradamus: Modern Methods of Prediction, Modeling and Analysis of Nonlinear Systems

    2013-01-01

    This proceeding book of Nostradamus conference (http://nostradamus-conference.org) contains accepted papers presented at this event in 2012. Nostradamus conference was held in the one of the biggest and historic city of Ostrava (the Czech Republic, http://www.ostrava.cz/en), in September 2012. Conference topics are focused on classical as well as modern methods for prediction of dynamical systems with applications in science, engineering and economy. Topics are (but not limited to): prediction by classical and novel methods, predictive control, deterministic chaos and its control, complex systems, modelling and prediction of its dynamics and much more.

  20. 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.

  1. 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...

  2. 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...

  3. 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.

  4. 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...

  5. 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...

  6. 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.

  7. 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 ...

  8. 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 ...

  9. 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.

  10. 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.

  11. Consensus conferences

    DEFF Research Database (Denmark)

    Nielsen, Annika Porsborg; Lassen, Jesper

    Our results point to significant national variation both in terms of the perceived aim of consensus conferences, expectations to conference outcomes, conceptions of the roles of lay people and experts, and in terms of the way in which the role of public deliberation is interpreted. Interestingly...

  12. 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

  13. 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.

  14. 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。

  15. 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.

  16. 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.

  17. 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...

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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

  3. 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

  4. 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...

  5. European Power Electronic conference in Aalborg, Denmark - 1000 participants discussing the future energy technologies

    DEFF Research Database (Denmark)

    Blaabjerg, Frede; Munk-Nielsen, Stig

    2007-01-01

    The European Power Electronics and Adjustable Speed Drives conference with technical sponsorship of IEEE Industrial Electronic Society has been held in Aalborg, Denmark, during the first days of September 2007 with an overwhelming success and participation. It was hosted by Aalborg University......'s Institute of Energy Technology....

  6. Result of aiming with the zero emission research plan. Research with the aim of the twenty-first century; Zero emisshon kenkyu koso to sono mezasumono. 21 seiki wo mezasu kenkyu koso no kinkyo

    Energy Technology Data Exchange (ETDEWEB)

    Hatano, Y.

    1999-12-01

    In accordance with the sustainable development which was a slogan adopted in the environment summit of Rio in 1992, UN Univ. Agenda 21 was established by UN University (UNU) in 1994. The program of Eco- restructuring for Sustainable Development was constructed by UNU based on the agenda, and as a part of this program, UNU/Zero Emission Research Initiative (UNU/ ZERI) that is, UNU Zero emission research plan has been started. In this paper, the international activity of UNU/ZERI has been introduced. Very large echo was called even in foreign countries on this UNU/ZERI research plan from those announcement days, and the first international conference was held in UN Univ. in Japan in 1995 in which the research plan started. Then, the second was held in Chattanooga, Tennessee, U.S.A. in 1996, the third was held in Jakarta (1997) and the fourth was held in Namibia (1998) respectively. (NEDO)

  7. 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.

  8. Investigation of Motion Induced Errors in Scatter Correction for the HRRT Brain Scanner. In: 2010 IEEE Nuclear Science Symposium, Conference Record (MIC), IEEE 2010

    DEFF Research Database (Denmark)

    Anton-Rodriguez, J M; Sibomana, Merence; Walker, M D;

    2010-01-01

    Patient motion during PET scans introduces errors in the attenuation correction and image blurring leading to false changes in regional radioactivity concentrations. However, the potential effect that motion has on simulation-based scatter correction is not fully appreciated. Specifically for tra...

  9. Introduction to the IEEE International Symposium on Applications of Ferroelectrics and International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials.

    Science.gov (United States)

    Ye, Zuo-Guang; Tan, Xiaoli; Bokov, Alexei A

    2012-09-01

    The 20th IEEE International Symposium on Applications of Ferroelectrics (ISAF) was held on July 24-27, 2011, in Vancouver, British Columbia, Canada, jointly with the International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (PFM). Over a period of four days, approximately 400 scientists, engineers, and students from around the world presented their work and discussed the latest developments in the field of ferroelectrics, related materials, and their applications. It is particularly encouraging to see that a large number of students (115) were attracted to the joint conference and presented high-quality research works. This trend is not only important to this conference series, but more importantly, it is vital to the future of the ferroelectrics field.

  10. 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。

  11. 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...

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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...

  17. 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...

  18. Mendel conference

    CERN Document Server

    2015-01-01

    This book is a collection of selected accepted papers of Mendel conference that has been held in Brno, Czech Republic in June 2015. The book contents three chapters which represent recent advances in soft computing including intelligent image processing and bio-inspired robotics.: Chapter 1: Evolutionary Computing, and Swarm intelligence, Chapter 2: Neural Networks, Self-organization, and Machine Learning, and Chapter3: Intelligent Image Processing, and Bio-inspired Robotics. The Mendel conference was established in 1995, and it carries the name of the scientist and Augustinian priest Gregor J. Mendel who discovered the famous Laws of Heredity. In 2015 we are commemorating 150 years since Mendel's lectures, which he presented in Brno on February and March 1865. The main aim of the conference was to create a periodical possibility for students, academics and researchers to exchange their ideas and novel research methods.  .

  19. Conference Notification

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Roskill Information Services and Metal Events Ltd areorganizing the 2nd International Rare Earths Conference,which will be held at the Conrad Hotel in Hong Kong onFebruary 28 to March 2 2006.The program is structured tocover all the main aspects of the rare earths industry,including development of Chinese rare earth industry; trendsin rare earths demand; potential constraints on supply;research on potential capacity of rare earths supply chain.Global rare earths consumers will attend the conference.Registra...

  20. 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.

  1. 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.

  2. 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.

  3. Conference Report: CAQD Conference 2013

    Directory of Open Access Journals (Sweden)

    Christina Silver

    2013-05-01

    Full Text Available Nestled on the banks of the river Lahn in central Germany, the 15th CAQD conference was held at Marburg. A beautiful provincial town, it is one of very few that was spared the bombings of WWII; now providing the perfect backdrop for meeting to discuss developments in qualitative technology. This was the second international conference in the series with more than 140 delegates from 14 countries, including: Canada, Brazil, Portugal, the UK, as well as Germany. Hosted by MAGMA, the Marburg Research Group for Methodology and Evaluation, in partnership with Philipps-University Marburg, CAQD prioritizes a user-focus which balances practical and methodological workshops with conference presentations. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1302249

  4. 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...

  5. 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...

  6. 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。

  7. Conference Hopes

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Annual conference outlines tasks for 2010 to solidify China’s economic recovery through rational investment and increasing consumptionc hina will adhere to a consistent and stable economic strategy, putting in place a proactive fiscal policy and an accommodative monetary policy for the 2010 fiscal year-the macro-economic course mapped out during China’s Central

  8. Conference proceedings

    African Journals Online (AJOL)

    abp

    2015-08-07

    Aug 7, 2015 ... African epidemiological association and 1st conference of the Cameroon society of ... International Reference Centre (CIRCB) for research on HIV/AIDS prevention and .... interests (third line regimens, clinical trials and HIV functional cure). ... sharing. Regarding Mycobacterium Tuberculosis, the efficacy of.

  9. 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.

  10. 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.

  11. 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.

  12. 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

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 2nd international conference on advanced nanomaterials and nanotechnology

    CERN Document Server

    Goswami, D; Perumal, A

    2013-01-01

    Nanoscale science and technology have occupied centre stage globally in modern scientific research and discourses in the early twenty first century. The enabling nature of the technology makes it important in modern electronics, computing, materials, healthcare, energy and the environment. This volume contains selected articles presented (as Invited/Oral/Poster presentations) at the 2nd international conference on advanced materials and nanotechnology (ICANN-2011) held recently at the Indian Institute of Technology Guwahati, during Dec 8-10, 2011. The list of topics covered in this proceedings include: Synthesis and self assembly of nanomaterials Nanoscale characterisation Nanophotonics & Nanoelectronics Nanobiotechnology Nanocomposites  F   Nanomagnetism Nanomaterials for Enery Computational Nanotechnology Commercialization of Nanotechnology The conference was represented by around 400 participants from several countries including delegates invited from USA, Germany, Japan, UK, Taiwan, Italy, Singapor...

  19. 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。

  20. SIGEF Conference

    CERN Document Server

    Terceño-Gómez, Antonio; Ferrer-Comalat, Joan; Merigó-Lindahl, José; Linares-Mustarós, Salvador

    2015-01-01

    This book is a collection of selected papers presented at the SIGEF conference, held at the Faculty of Economics and Business of the University of Girona (Spain), 06-08 July, 2015. This edition of the conference has been presented with the slogan “Scientific methods for the treatment of uncertainty in social sciences”. There are different ways for dealing with uncertainty in management. The book focuses on soft computing theories and their role in assessing uncertainty in a complex world. It gives a comprehensive overview of quantitative management topics and discusses some of the most recent developments in all the areas of business and management in soft computing including Decision Making, Expert Systems and Forgotten Effects Theory, Forecasting Models, Fuzzy Logic and Fuzzy Sets, Modelling and Simulation Techniques, Neural Networks and Genetic Algorithms and Optimization and Control. The book might be of great interest for anyone working in the area of management and business economics and might be es...

  1. Conference information

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ Thermag Ⅳ- The 4th International Conference on Magnetic Refrigeration at Room Temperature of IIR Refrigeration technology is widely used today. However, traditional vapor compression/expansion refrigeration technology has some disadvantages, such as low conversion efficiency of vapor compressor, and emission of the ozonosphere depletion gas and greenhouse effect gas, etc. Magnetic refrigeration is a new cooling technology with huge potential application prospect, characterized by high efficiency, energy saving and environmental friendly.

  2. 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...

  3. It participates in 'international workshop on the concrete technology for sustainable development in the twenty-first century'; '21 seiki ni okeru jizokuteki hatten no tameno konkurito gijutsu ni kansuru kokusai waku shoppu' ni sankashite

    Energy Technology Data Exchange (ETDEWEB)

    Noguchi, Takafumi; Ishida, Tetsuya [The University of Tokyo, Tokyo (Japan)

    1998-10-10

    International workshop on the concrete technology for sustainable development in the twenty-first century' was held in Norway. From the viewpoint of the durability by corrosion of steel, present state and problem and future direction to be aimed of design the Grorv professor mainly show system of the RC structure. Here, the construction of the estimable frame was emphasized in the life cycle including the maintenance repair. And, the lecture on concept of the performance evaluation die design system and concrete content of the integrated design was made from the Sakai professor as future flow of the design code of reinforced concrete structure in our country and world. (NEDO)

  4. 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.

  5. 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.

  6. Conference Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Riveros, P. A.; Dutrizac, J. E. [Natural Resources Canada, Ottawa, ON (Canada)] [eds.

    2001-07-01

    This workshop is part of a continuing series of joint workshops organized by CANMET of Natural Resources Canada and the Research Directorate-General of the European Commission in the areas of sustainable metallurgical processing, recycling and environmental protection. The program presented at this conference also benefited from the organizational support of the Canadian Association of Recycling Industries. Over the past twenty years these workshops served as a valuable forum for the discussion of the technological issues associated with metallurgical processing, recycling and compliance with environmental regulations within the framework of sustainable development. The program this year was organized in five sessions. A total of 32 papers were presented. Session One emphasized the international dimension of modern research as illustrated by the Intelligent Manufacturing System (MIS) program. Session Two dealt with recycling, with special attention to the recycling of plastics and construction materials. Session Three was devoted to highlighting European efforts to treat chromium-bearing solutions or to find alternatives to chromium salts in surface treatment operations. Session Four emphasized primary and secondary zinc processing and the importance of energy conservation. The final session reviewed waste management practices and the utilization of waste materials. Opening addresses by representatives of the sponsoring organizations and a list of conference attendees and their affiliations are also included.

  7. NATO Conference

    CERN Document Server

    Lynn, W

    1975-01-01

    The contents of this volume involve selection, emendation and up-dating of papers presented at the NATO Conference "Mathe­ matical Analysis of Decision problems in Ecology" in Istanbul, Turkey, July 9-13, 1973. It was sponsored by the System Sciences Division of NATO directed by Dr. B. Bayraktar with local arrange­ ments administered by Dr. Ilhami Karayalcin, professor of the Department of Industrial Engineering at the Technical University of Istanbul. It was organized by A. Charnes, University professor across the University of Texas System, and Walter R.Lynn, Di­ rector of the School of Civil and Environmental Engineering at Cornell Unjversity. The objective of the conference was to bring together a group of leading researchers from the major sciences involved in eco­ logical problems and to present the current state of progress in research of a mathematical nature which might assist in the solu­ tion of these problems. Although their presentations are not herein recorded, the key­ note address of Dr....

  8. EGC Conferences

    CERN Document Server

    Ritschard, Gilbert; Pinaud, Bruno; Venturini, Gilles; Zighed, Djamel; Advances in Knowledge Discovery and Management

    This book is a collection of representative and novel works done in Data Mining, Knowledge Discovery, Clustering and Classification that were originally presented in French at the EGC'2012 Conference held in Bordeaux, France, on January 2012. This conference was the 12th edition of this event, which takes place each year and which is now successful and well-known in the French-speaking community. This community was structured in 2003 by the foundation of the French-speaking EGC society (EGC in French stands for ``Extraction et Gestion des Connaissances'' and means ``Knowledge Discovery and Management'', or KDM). This book is intended to be read by all researchers interested in these fields, including PhD or MSc students, and researchers from public or private laboratories. It concerns both theoretical and practical aspects of KDM. The book is structured in two parts called ``Knowledge Discovery and Data Mining'' and ``Classification and Feature Extraction or Selection''. The first part (6 chapters) deals with...

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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

  15. 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.

  16. 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....

  17. 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.

  18. 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.

  19. 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...

  20. 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.

  1. Twenty-first century brain banking: at the crossroads.

    Science.gov (United States)

    Graeber, Manuel B

    2008-05-01

    Brain banks form an increasingly important resource for research. In view of declining autopsy rates, brain banks are also gaining importance for medical diagnostics, quality control and teaching. In the case of neurodegenerative diseases, brain banks have become drivers of discovery and are yielding invaluable taxonomic references for neuropathologists. This article provides comments on two recent landmark papers in the field (Bell JE et al. Acta Neuropathol 2008. doi:10.1007/s00401-008-0358-8; Vonsattel JP et al. Acta Neuropathol 2008. doi:10.1007/s00401-007-0311-9). Professionalisation of brain banking standards, ethical principles safeguarding the running of a brain bank and a proposed code of conduct for brain bank staff are outlined and discussed. Special emphasis is placed on the need to enable sustainability of the human brain tissue resource in the face of increased financial pressures on medical institutions and raised public expectations towards ethical human brain banking in a globalised economic environment. It is proposed that brain banks undergo rigorous international audit as a prerequisite for their registration with the relevant national neuropathological society. This promises to be an important safeguard so that proper standards can be assured when tissue is handed out to commercial companies. Honesty, accountability and complete transparency are mandatory to allow long-lasting success of the brain banking operation by guaranteeing that the best possible use is made of the tissue. Preferred access by private tissue users must be avoided and money must never be allowed to buy access to a brain bank. Since brain banks operate internationally, any mistake made may be felt around the globe and could endanger the public's willingness to donate brains for research. The much-needed increase in the number of control brain donations will only be achievable if broad-based support from the general public can be won and maintained.

  2. Talent management for the twenty-first century.

    Science.gov (United States)

    Cappelli, Peter

    2008-03-01

    Most firms have no formal programs for anticipating and fulfilling talent needs, relying on an increasingly expensive pool of outside candidates that has been shrinking since it was created from the white-collar layoffs of the 1980s. But the advice these companies are getting to solve the problem--institute large-scale internal development programs--is equally ineffective. Internal development was the norm back in the 1950s, and every management-development practice that seems novel today was routine in those years--from executive coaching to 360-degree feedback to job rotation to high-potential programs. However, the stable business environment and captive talent pipelines in which such practices were born no longer exist. It's time for a fundamentally new approach to talent management. Fortunately, companies already have such a model, one that has been well honed over decades to anticipate and meet demand in uncertain environments: supply chain management. Cappelli, a professor at the Wharton School, focuses on four practices in particular. First, companies should balance make-versus-buy decisions by using internal development programs to produce most--but not all--of the needed talent, filling in with outside hiring. Second, firms can reduce the risks in forecasting the demand for talent by sending smaller batches of candidates through more modularized training systems in much the same way manufacturers now employ components in just-in-time production lines. Third, companies can improve their returns on investment in development efforts by adopting novel cost-sharing programs. Fourth, they should seek to protect their investments by generating internal opportunities to encourage newly trained managers to stick with the firm. Taken together, these principles form the foundation for a new paradigm in talent management: a talent-on-demand system.

  3. Death and Memory in the Twenty-First Century

    OpenAIRE

    Pitsillides, Stacey

    2016-01-01

    Technology has always played a key role in holding onto some of the precious experiences we collect over our relatively short lives, in order to pass them on to the next generation. This can even be linked to communication practices which pre-date language. The connection between external communal memory and symbolic meaning may even have already existed as a practice during Neanderthal times. This was enacted through the shaping or engraving of found objects, like shells. Over time these non...

  4. The twenty-first century commercial space imperative

    CERN Document Server

    Young, Anthony

    2015-01-01

    Young addresses the impressive expansion across existing and developing commercial space business markets, with multiple private companies competing in the payload launch services sector. The author pinpoints the new markets, technologies, and players in the industry, as well as highlighting the overall reasons why it is important for us to develop space. NASA now relies on commercial partners to supply cargo and crew spacecraft and services to and from the International Space Station. The sizes of satellites are diminishing and their capabilities expanding, while costs to orbit are decreasing. Suborbital space tourism holds the potential of new industries and jobs. Commercial space exploration of the Moon and the planets also holds promise. All this activity is a catalyst for anyone interested in joining the developing space industry, from students and researchers to engineers and entrepreneurs. As more and more satellites and rockets are launched and the business of space is expanding at a signifi...

  5. What constitutes cerebral palsy in the twenty-first century?

    DEFF Research Database (Denmark)

    Smithers-Sheedy, Hayley; Badawi, Nadia; Blair, Eve

    2014-01-01

    AIM: Determining inclusion/exclusion criteria for cerebral palsy (CP) surveillance is challenging. The aims of this paper were to (1) define inclusion/exclusion criteria that have been adopted uniformly by surveillance programmes and identify where consensus is still elusive, and (2) provide an u...

  6. Educating Physicians for the Twenty-First Century.

    Science.gov (United States)

    Greenlick, Merwyn R.

    1995-01-01

    Changes in medical and health care since 1935 are reviewed and factors affecting medicine and physician training in the future are examined, including technology, economic factors, role of government, physician social responsibility, and the medical culture. Oregon Health Sciences University's efforts to develop clinical and population-based…

  7. Reflections on Comparative Literature in the Twenty-First Century

    Institute of Scientific and Technical Information of China (English)

    BASSNETT; Susan

    2010-01-01

    <正>I have been struggling with Comparative Literature all my academic life.I use the word‘struggle’ advisedly;engaging with the idea of comparative literature has not been easy nor,as we move forward in this new century,is it at all clear where the discipline will move to next.True,on the one hand there is a flourishing

  8. Preparing To Serve Students in the Twenty-First Century.

    Science.gov (United States)

    Johnson, Cynthia S.

    1999-01-01

    In celebration of The American College Personnel Association's seventy-fifth anniversary, Senior Scholars developed a project to: determine the trends that will affect high education in the next century; identify the impact these trends will have on student experience; identify research needed to respond to trends; and identify Emerging Scholars…

  9. Empowerment of Women through Education in Twenty First Century

    Science.gov (United States)

    Moradi Sheykhjan, Tohid; Rajeswari, K.; Jabari, Kamran

    2014-01-01

    This article explores theoretical and practical issues related to the impact of women's education in their empowerment. The development of women's education is discussed in this study. As women's education has become one of the key development objectives in the recent decades, the concept of empowerment has been tied to the range of activities…

  10. Drone Warfare: Twenty-First Century Empire and Communications

    Directory of Open Access Journals (Sweden)

    Kevin Howley

    2017-02-01

    Full Text Available This paper, part of a larger project that examines drones from a social-construction of technology perspective, considers drone warfare in light of Harold Innis’s seminal work on empire and communication. Leveraging leading-edge aeronautics with advanced optics, data processing, and networked communication, drones represent an archetypal “space-biased” technology. Indeed, by allowing remote operators and others to monitor, select, and strike targets from half a world away, and in real-time, these weapon systems epitomize the “pernicious neglect of time” Innis sought to identify and remedy in his later writing. With Innis’s time-space dialectic as a starting point, then, the paper considers drones in light of a longstanding paradox of American culture: the impulse to collapse the geographical distance between the United States and other parts of the globe, while simultaneously magnifying the cultural difference between Americans and other peoples and societies. In the midst of the worldwide proliferation of drones, this quintessentially sublime technology embodies this (disconnect in important, profound, and ominous ways.

  11. The Casualties of the Twenty-First-Century Community College

    Science.gov (United States)

    Wilson, David McKay

    2010-01-01

    This article discusses academic freedom that is currently under threat at many public two-year schools, which serve almost one-half of the nation's first-year college students. The growing reliance on part-time faculty exacerbates the problem, with many adjuncts feeling muzzled for fear of losing their jobs. The problem of academic freedom at…

  12. Teaching Archaeology in the Twenty-First Century.

    Science.gov (United States)

    Bender, Susan J., Ed.; Smith, George S., Ed.

    This book was written to offer ideas on how to open archeological education to more students, not just those seeking a Ph.D. Individuals in archaeology provide background and offer suggestions for a movement to provide greater access to the field. The book ponders 21st century archaeology, its possible directions and strategies, and call on those…

  13. Data Analysis in the Twenty-First Century

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, A; Kamath, C; Kumar, V

    2007-08-16

    The 21st Century is characterized by complex multidisciplinary problems accompanied by massive datasets. 'We are drowning in data, but starving for knowledge', as the volumes of many commercial, industrial and scientific datasets have exceeded the terabyte range and are approaching petabytes and beyond. Statistical methodology has long been employed to find useful and usable information in data. More recently, data mining has harnessed the power of computer technology to find useful and usable patterns in such massive datasets. Although several data mining journals have joined the established statistical journals, no single journal provides an integrated treatment of statistical analysis methodology and data mining technology, particularly when applied to the solution of practical problems. This absence and the needs expressed above motivated the inauguration of John Wiley's new Journal on Statistical Analysis and Data Mining. The goals of this interdisciplinary journal are to encourage collaborations across disciplines, communication of data mining and statistical techniques to both novices and experts involved in the analysis of data from practical problems, and a principled and productive evaluation of analyses and solutions. The journal specifically encourages submission of works that have statistical rigor in the analysis of data, incorporate the most appropriate algorithms from data mining, and address the needs of applications. Applying data mining algorithms to practical problems is not sufficient, because we need to ensure that the results have a sound statistical basis, lest any decision based on these results lead to a catastrophe. Even data mining algorithms founded on sound statistical analysis are not sufficient, if they cannot solve a practical problem. Finally, employing a statistical analysis on a practical problem is not sufficient, unless it scales up to massive datasets. Statistical analysis and data mining are actually two sides of the sword that is sorely needed to conquer data overload in practical problems.

  14. Censusing marine eukaryotic diversity in the twenty-first century.

    Science.gov (United States)

    Leray, Matthieu; Knowlton, Nancy

    2016-09-01

    The ocean constitutes one of the vastest and richest biomes on our planet. Most recent estimations, all based on indirect approaches, suggest that there are millions of marine eukaryotic species. Moreover, a large majority of these are small (less than 1 mm), cryptic and still unknown to science. However, this knowledge gap, caused by the lack of diagnostic morphological features in small organisms and the limited sampling of the global ocean, is currently being filled, thanks to new DNA-based approaches. The molecular technique of PCR amplification of homologous gene regions combined with high-throughput sequencing, routinely used to census unculturable prokaryotes, is now also being used to characterize whole communities of marine eukaryotes. Here, we review how this methodological advancement has helped to better quantify the magnitude and patterns of marine eukaryotic diversity, with an emphasis on taxonomic groups previously largely overlooked. We then discuss obstacles remaining to achieve a global understanding of marine eukaryotic diversity. In particular, we argue that 18S variable regions do not provide sufficient taxonomic resolution to census marine life, and suggest combining broad eukaryotic surveys targeting the 18S rRNA region with more taxon-focused analyses of hypervariable regions to improve our understanding of the diversity of species, the functional units of marine ecosystems.This article is part of the themed issue 'From DNA barcodes to biomes'.

  15. Strategic Leader Competencies for the Twenty-First Century

    Science.gov (United States)

    2007-03-01

    intuition for they play critical roles in the process.17 The ability to successfully vision does not require superior intelligence ; rather, it...which is statistically consistent with previous classes, the most common personality preferences among senior Army leaders are: introversion , sensing...military forces, improves intelligence and information sharing, and “most importantly, fosters the personal relationships between U.S. military

  16. Seminar in Critical Inquiry Twenty-first Century Nuclear Systems

    Energy Technology Data Exchange (ETDEWEB)

    LeMone, D. V.

    2002-02-25

    Critical Inquiry, has not only been successful in increasing university student retention rate but also in improving student academic performance beyond the initial year of transition into the University. The seminar course herein reviewed is a balanced combination of student personal and academic skill development combined with a solid background in modern nuclear systems. It is a valid premise to assume that entering students as well as stakeholders of the general public demonstrate equal levels of capability. Nuclear systems is designed to give a broad and basic knowledge of nuclear power, medical, industrial, research, and military systems (nuclear systems) in 20-25 hours.

  17. Water stewardship in the twenty-first century

    Science.gov (United States)

    Simpson, Peter

    2014-05-01

    The impacts of extreme weather are being felt by us all and scientific research points to a likely worsening of weather patterns in the next decades. Therefore, it is imperative to think carefully about how we build the infrastructure of the future to increase the resilience of our societies.

  18. Z Cam Stars in the Twenty-First Century

    Science.gov (United States)

    Simonsen, M.; Boyd, D.; Goff, W.; Krajci, T.; Menzies, K.; Otero, S.; Padovan, S.; Poyner, G.; Roe, J.; Sabo, R.; Sjoberg, G.; Staels, B.; Stubbings, R.; Toone, J.; Wils, P.

    2014-05-01

    Z Cam (UGZ) stars are a small subset of dwarf novae that exhibit standstills in their light curves. Most modern literature and catalogs of cataclysmic variables quote the number of known Z Cams to be on the order of thirty or so systems. After a four-year observing campaign and an exhaustive examination of the data in the AAVSO International Database (AID) we have trimmed that number by a third. One of the reasons for the misclassification of some systems is the fact that the definition of what a Z Cam is has changed over the last eighty-five years. This has caused many stars formerly assumed to be Z Cams or rumored to be Z Cams to be eliminated from the final list. In this paper we present the results of our investigation into sixty-five stars listed at one time or another in the literature as Z Cams or possible Z Cams.

  19. Microsurgery Training for the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Simon Richard Myers

    2013-07-01

    Full Text Available Current educational interventions and training courses in microsurgery are often predicated on theories of skill acquisition and development that follow a ‘practice makes perfect’ model. Given the changing landscape of surgical training and advances in educational theories related to skill development, research is needed to assess current training tools in microsurgery education and devise alternative methods that would enhance training . Simulation is an increasingly important tool for educators because, whilst facilitating improved technical proficiency, it provides a way to reduce risks to both trainees and patients. The International Microsurgery Simulation Society has been founded in 2012 in order to consolidate the global effort in promoting excellence in microsurgical training. The society’s aim to achieve standarisation of microsurgical training worldwide could be realised through the development of evidence based educational interventions and sharing best practices.

  20. Clean energy for the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Hawley, R. [Rotork plc, Bath (United Kingdom)

    1997-12-01

    The global issues shaping the historical development of nuclear power, the present state of the nuclear industry and its likely future are discussed in this paper. In particular the public`s concern about the whole nuclear issue, especially decommissioning, has led to widespread negative responses to the nuclear industry. The effects of deregulation of the United Kingdom electricity supply industry on financing of nuclear generating capacity are also considered. Given global warming, and the environmental effects of fossil fuel use, nuclear power is, it is argued, likely to continue to play an important role in power generation into the 21st century and beyond. (UK).

  1. Fossil fuel prospects for the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Duncan, R.C. [Institute on Energy and Man, Seattle, WA (United States)

    1998-06-01

    The consumption of fossil fuels for power generation to sustain global economic development is bound to fail, it is argued. By examining data on global natural gas, coal and petroleum reserves, in relation to historic data and various forecasts for economic and industrial growth measures (as fossil fuel consumption total use and per capita use) the author points out two inevitable consequences of fossil fuel consumption, subsoil depletion and environmental damage, and reveals the urgent necessity to find a new primary energy source. (UK)

  2. The energy challenge in the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Santaholma, J.

    1999-07-01

    As one of the major production factors, energy in its various forms is of vital importance to industry and business. The twentieth century has seen significant structural changes, unexpected political upheavals and supply interruptions, violent price shocks, and mounting environmental resistance to the use of nuclear energy and fossil fuels.

  3. The twenty first century informatization and artificial intelligence system

    Energy Technology Data Exchange (ETDEWEB)

    Noh, Jung Ho

    1999-12-15

    The contents of this book are competition of mental weakness and visually handicapped people, barbarian about the knowledge of commodity, we are living in notion of time of the agricultural age, parade of informatization of fool. Is there a successful case of informatization when it is done as others do?, what is technology of informatization?, there is mistake in traditional information technology from a system of thought, information system, and analysis of improvement of industrial structure case of development for program case of system installation, and a thief free society.

  4. UNLV Special Collections in the Twenty-First Century

    Directory of Open Access Journals (Sweden)

    Thomas Sommer

    2009-09-01

    Full Text Available University of Nevada Las Vegas (UNLV Special Collections is consistently striving to provide several avenues of discovery to its diverse range of patrons. Specifically, UNLV Special Collections has planned and implemented several online tools to facilitate unearthing treasures in the collections. These online tools incorporate Web 2.0 features as well as searchable interfaces to collections.

  5. Clean and secure energy for the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Fells, I. [University of Newcastle Upon Tyne, Newcastle Upon Tyne (United Kingdom)

    2002-07-01

    As energy demand world-wide continues to rise, fuelling the expanding economy, the twin problems of security of supply and rising carbon dioxide emissions have risen high in the global agenda. Can economic growth be sustained without increasing energy demand? Is the prospect of global warming and the destabilisation of the weather machine so daunting that a global carbon tax should be instituted? Can renewable energy replace fossil fuel in the next 50 years? Will nuclear energy re-emerge as the high technology solution to our problems?

  6. Environmental permitting strategies for the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Munson, B.E.; Wallis, C.M.

    1999-07-01

    Recent trends in economic markets have caused mining companies to look harder at reducing costs for collecting information, performing studies, and conducting other necessary activities to complete environmental permitting. In some cases, it may be in the operator's best interest to delay permitting and related expenditures to the extent possible. In most cases, however, agency mandates and the need to continue operations require that permits be obtained and maintained in the most expedient and economical way possible. This paper explores some basic approaches to environmental permitting which are intended to strategically guide the permitting process through the maze of requirements in a relatively straightforward manner. Through application of common sense and KISS (Keep it simple, stupid) the authors have found that permitting can be conducted in a quicker fashion than most applicants experience. The authors explore and explain some of these basic principles by drawing on their own experiences in the Arizona Aquifer Protection Permit and other environmental permit programs.

  7. Aeronautical technologies for the twenty-first century

    Science.gov (United States)

    1992-01-01

    This study gives an overview of the future technologies in aeronautics. This collaborative effort relies upon the input of numerous experts from around the country. Specific issues covered include subsonic transport aircraft, high-speed civil transport aircraft short-haul aircraft, environmental issues, operational issues, aerodynamics, propulsion, materials and structures, avionics and control, and cognitive engineering. The appendices include bibliography, abbreviations and acronyms, and NASA fiscal year 1992 aeronautics funding (table) and participants. The forward states that over the last decade, foreign aircraft manufacturers have made significant inroads into the global aircraft market, to the detriment of U.S. interests. Recommendations are made to counter that trend.

  8. Coal log pipeline for twenty-first century coal transportation

    Energy Technology Data Exchange (ETDEWEB)

    Marrero, T.R.; Liu, H.; Wilkinson, J.E. [Univ. of Missouri, Columbia, MO (United States)

    1998-12-31

    During the first years of the 21st century coal log pipeline (CLP) technology will be available for long-distance coal transportation. The purpose of this report is to present the state-of-the-art of coal log pipeline technology. Some recent developments are as follows: optimization of coal log compaction procedures, construction of a unique coal log prototype manufacturing machine, and its testing. Coal log abrasion while transported in water-filled pipelines is also discussed. A CLP pilot plant is currently under construction at the University of Missouri. For certain routes in the US a CLP system appears to be cost-competitive.

  9. Some astronomical challenges for the twenty-first century

    Science.gov (United States)

    Burns, Jack O.

    1992-01-01

    This paper addresses some of the scientific puzzles that astronomers may face in the next century. Four areas in astronomy are discussed in detail. These include cosmology and galaxy formation, active galaxies and quasars, supernovae and stellar remnants, and the formation of stars and planets. A variety of observatories on the Moon are proposed to attack these astronomical challenges.

  10. Gravity's ghost scientific discovery in the twenty-first century

    CERN Document Server

    Collins, Harry

    2011-01-01

    In theory, at least, gravitational waves do exist. We are constantly bathed in gravitational radiation, which is generated when stars explode or collide and a portion of their mass becomes energy that ripples out like a disturbance on the surface of a serene pond. But unfortunately no gravitational wave has ever been directly detected even though the search has lasted more than forty years. As the leading chronicler of the search for gravitational waves, Harry Collins has been right there with the scientists since the start. The result of his unprecedented access to the front lines of physical

  11. Strategy after oil in the twenty first century

    Energy Technology Data Exchange (ETDEWEB)

    AlBitar, O.

    1996-04-01

    When talking about energy, the basic question a person might ask, what is energy. One definition is, `Doing work requires the capacity to do work, this capacity is called energy.` But, in economical terms, energy is `The driving force, the universal factor, that enables people to convert natural resources to useful goods and services.` In fact, energy is the heartbeat of society and the means for their survival. Today, Oil and gas provide about 70 percent of the energy consumed in the United States. In order to manufacture goods and produce services, we require huge amounts of oil energy. In extreme cases, for example, it takes 10 million barrels of oil to build an aircraft carrier. To operate a battle group during its life cycle, it consumes approximately 64 million barrels of oil. Thus, to utilize many of the products, we need considerable amounts of this energy. Moreover, to dispose of them or to recycle them also requires additional amounts of energy.

  12. The new neutrino physics of the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    Plunkett, Robert K. [FERMILAB, Batavia, IL (United States)

    2012-07-01

    Full text: Rapid progress in our understanding of the complicated nature of the neutrino has occurred since the original discovery of neutrino masses at the very end of the twentieth century. The previous decade has cemented our understanding of the mixing behavior of the three known active neutrinos, but also left with a large number of challenging questions. The neutrino emphasizes the need for a deeper understanding of physics than the traditional Standard Model. This talk will focus on experimental status and opportunities for surprises using this very special neutral fermion. (author)

  13. Defining Theosophy in the Twenty-First century

    Directory of Open Access Journals (Sweden)

    René Dybdal Pedersen

    2008-01-01

    Full Text Available The concept theosophy has been used by different theological and philosophical positions with different meaning throughout western history. The concept can therefore not be understood as a trans-historical or universal one, but must be specified whenever it is applied, since several theosophies have existed over time. Nonetheless, a specification is seldom provided when the term is and has been applied in recent decades by scholars as well as the general public. Most often when used today, the term is applied as synonymous to the theosophy introduced by Helena Petrovna Blavatsky (1831–91, co-founder of the Theosophical Society (TS established in 1875; consequently tending to include only the TS as tradition when evaluating a given theosophical theme. However, focussing on tradition rather than on theology—that is, focussing on the founding tradition rather than also including groups practising according to theosophical dogma—can give rise to a number of problems, particularly when considering the theosophical situation today. Using a wider perspective when evaluating the theosophical situation today reveals a different picture—one that shows that theosophy is not dying out, but rather, experiencing a renaissance. One obvious question evolving from these reflections is whether this theosophy experiencing a renaissance is the same theosophy as the Blavatskian or ‘modern’ theosophy, as Emely B. Sellon and Renée Weber have classified it, or if it is to be considered as a new type or kind. The aim of this article is to discuss this question, looking at how theosophy has developed in Denmark over the last century; a country in which a theosophical renaissance has indeed been observed in recent years.

  14. Is the Classroom Obsolete in the Twenty-First Century?

    Science.gov (United States)

    Benade, Leon

    2017-01-01

    Lefebvre's triadic conception of "spatial practice, representations of space and representational spaces" provides the theoretical framework of this article, which recognises a productive relationship between space and social relations. Its writing stems from a current and ongoing qualitative study of innovative teaching and learning…

  15. Strategic planning: preparing for the twenty-first century.

    Science.gov (United States)

    Andrews, M M

    1990-01-01

    If educational institutions for nursing are to survive these uncertain times and to experience new life in the advent of the 21st century, careful planning for the future must be undertaken. Strategic planning, a relatively new term in nursing education, is a concept designed to achieve goals in dynamic, competitive environments through the judicious allocation of resources. The primary purpose of strategic planning is to achieve success with mission while linking the institution's future to anticipated changes in the environment. Strategic planning enables an institution to function in such a manner that the acquisition of resources exceeds their depletion. The purposes of this article are to (1) provide an overview of the strategic planning process and (2) describe the strategic planning experience of one private, liberal arts college in a midwestern state. Although the case example focuses on a liberal arts college, the strategic planning process is applicable to other types of educational settings.

  16. Cyber Attacks and Terrorism: A Twenty-First Century Conundrum.

    Science.gov (United States)

    Albahar, Marwan

    2017-01-05

    In the recent years, an alarming rise in the incidence of cyber attacks has made cyber security a major concern for nations across the globe. Given the current volatile socio-political environment and the massive increase in the incidence of terrorism, it is imperative that government agencies rapidly realize the possibility of cyber space exploitation by terrorist organizations and state players to disrupt the normal way of life. The threat level of cyber terrorism has never been as high as it is today, and this has created a lot of insecurity and fear. This study has focused on different aspects of cyber attacks and explored the reasons behind their increasing popularity among the terrorist organizations and state players. This study proposes an empirical model that can be used to estimate the risk levels associated with different types of cyber attacks and thereby provide a road map to conceptualize and formulate highly effective counter measures and cyber security policies.

  17. Families and Elder Care in the Twenty-First Century

    Science.gov (United States)

    Bookman, Ann; Kimbrel, Delia

    2011-01-01

    Although most Americans know that the U.S. population is aging, they are far less informed about the reality of providing elders with personal care, health care, and social support. Families--particularly women--have always been critical in providing elder care, but the entry of so many women into the paid labor force has made elder care…

  18. Moral Psychology for the Twenty-First Century

    Science.gov (United States)

    Haidt, Jonathan

    2013-01-01

    Lawrence Kohlberg slayed the two dragons of twentieth-century psychology--behaviorism and psychoanalysis. His victory was a part of the larger cognitive revolution that shaped the world in which all of us study psychology and education today. But the cognitive revolution itself was modified by later waves of change, particularly an "affective…

  19. Making the Nation Safe in the Twenty-First Century

    Science.gov (United States)

    2009-12-01

    the nation on an ill advised course. As Bongar, Beutler, Zimbardo , and Brown (2004) suggest in Psychology of Terrorism that the United States...to step up Welsh presence. Retrieved on May 16, 2009, from http://news.bbc.co.uk/1/hi/wales/4743963.stm Bonger, B., Beutler, L., Zimbardo , P

  20. The Neglected Patent Controversies in the Twenty First Century

    Directory of Open Access Journals (Sweden)

    Birgitte Andersen

    2003-01-01

    Full Text Available Na virada do século, assistimos a um reforço do sistema de patentes. No entanto, os gestores de políticas deixam sistematicamente de lado as controvérsias sobre patentes. Este artigo examina criticamente as complexas relações entre, por um lado, as razões para os direitos de patente e, por outro lado, seus efeitos sociais e econômicos. Só quando entendermos essa relação, seremos capazes de projetar regimes adequados de Direitos de Propriedade Intelectual (DPI para o novo paradigma tecnoeconômico de microeletrônica baseada em conhecimento e invenções de amplo alcance implementadas por computador. O foco se concentra nas razões morais, nas razões de incentivo econômico, e nas razões de aumento da concorrência e "proteção do talento empresarial no mercado", e nas razões econômicas para organizar ciência, tecnologia e criatividade. Afirma-se aqui que os sistemas de patentes não são neutros, eles estabelecem as regras do jogo em que indivíduos e organizações são os jogadores.At the turn of the century we have seen a tightening of the patent system. However, policy makers systematically neglect the patent controversies. This article critically reviews the complex relationships between the rationales for patent rights on the one hand, and the social and economic effects of such on the other hand. Only when we understand this relationship, will we be able to design appropriate Intellectual Property Right (IPR regimes for the new technoeconomic paradigm of knowledge-based micro-electronics and computer implemented pervasive inventions. Focus is on moral rationales, economic incentive rationales, increased competition and "market protection of entrepreneurial talent" rationales, and the economic rationales for organizing science, technology and creativity. It is argued that patent systems are not neutral, but set the rules of the game in which individuals and organizations are the players.