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Sample records for bob dobinson 1943-2004

  1. Bob Dobinson (1943-2004)

    CERN Multimedia

    2004-01-01

    Bob Dobinson died, very unexpectedly, in England on Thursday 19th February. Bob came to CERN as a NATO Fellow in April 1968, directly after gaining his PhD in London. He joined the CERN-Rome Group, carrying out experiments both at the CERN PS and at Serpukhov. He became a CERN fellow before being appointed as a Staff Member in 1971. His professional interests were always in the area of electronics, instrumentation, networking and computing at the "front-end" of experiments. In that context, mention must be made of his outstanding work in driving the CAMAC standard, and his later work on FASTBUS; of his leadership of the European Muon Collaboration's online team and of his support, as a user, for standard PDP-11 data acquisition software; of his interest in Ethernet at all times from its very initial use to inter-connect computers to his latest work with the Gigabit and 10 Gigabit versions as the basis for data transmission within experiments. Bob lived life the way he wanted to, and wit...

  2. Bob Dobinson (1943-2004)

    CERN Multimedia

    Bee, C; Mapelli, L; Wickens, F. J

    It was a great shock to the many friends and colleagues of Bob Dobinson to hear of his sudden and unexpected death in England on Thursday 19th February. Bob came to CERN in April 1968 and his professional interests were always in the area of electronics, instrumentation, networking and computing at the "front-end" of experiments. These interests included Ethernet, right from its very initial use to interconnect computers to his latest work with the Gigabit and 10 Gigabit versions as the basis for data transmission for experiments, both in the DAQ and between computing centres. Bob lived life the way he wanted to, and with great energy. He drove himself hard and generated enthusiasm amongst his collaborators to do the same. Always willing to learn from first principles about topics that interested him, he persisted with questions until he had obtained a full understanding. He was a first-class teacher, and he held positions as Visiting Professor at the Universities of Liverpool and London. He was also an exc...

  3. Bob's meltdown.

    Science.gov (United States)

    Carr, Nicholas G

    2002-01-01

    Annette Innella is just coming into the lunchroom at Concord Machines when Bob Dunn starts screaming at her. After throwing his lunch tray against the wall, he stomps out, leaving Annette stunned. Naturally, Annette, the new senior VP for knowledge management, is beside herself. She knows her proposal to establish a cross-functional knowledge management committee is progressive thinking for this oldline manufacturer, but Bob's reaction is totally over the line. If Bob stays, she goes--that's all there is to it. Bob is contrite, but he's under a lot of pressure. The general manager of the Services Group, he's just returned from a two-week trip around the globe to gear up his troops to beat revenue targets again, despite shrinking budgets and hiring freezes. And what does he see when he gets back? An e-mail from Annette requesting that two of his best people devote half their time to what he calls her "idiotic" Knowledge Protocols Group. He's carrying the company on his back, and she's throwing this nonsense at him. Graphics specialist Paula Chancellor is surprised. Sure, Bob's gruff, but his staff loves him, and he's the only one of the big shots who ever talks to her. But HR director Nathan Singer is incensed; Bob's never been a team player, Singer complains, and it's time he learned a lesson. CEO Jay Nguyen is in a bind. Bob is his top manager; he brings in all the money. And even though future revenues are going to have to come from somewhere else, Jay is not totally behind Annette's initiative in the current business climate. He can't afford to lose Bob. But if he reins in Annette, it will look like he's condoning Bob's outburst. What should he do? Four commentators offer advice in this fictional case study.

  4. Uudised: dokumentaalfilm Bob Dylanist

    Index Scriptorium Estoniae

    2005-01-01

    Viinis 14.-26. oktoobril toimuvast filmifestivalist, mille avafilmiks on Woody Alleni "Match Point". Ka Martin Scorsese portreefilm kultusmuusikust "No Direction Home: Bob Dylan" ning eriprogrammist, milleks on sel aastal Andy Warholi retrospektiiv

  5. Bob miller's math for the GMAT

    CERN Document Server

    Miller, Bob

    2012-01-01

    Maximize Your GMAT Math Score with Bob Miller! REA's updated second edition of Bob Miller's Math for the GMAT is a must for anyone taking the GMAT. Bob Miller has taught math to thousands of students at all educational levels for 30 years. His proven teaching methods will help you master the math section of the GMAT and boost your score! Written in a lively and unique format, Bob Miller's Math for the GMAT prepares GMAT-takers with everything they need to know. Unlike some dull test preps that merely present the material, Bob actually teaches and explains math concepts and ideas. His no-no

  6. Bound beta-decay: BOB

    International Nuclear Information System (INIS)

    For many years exotic decay modes of the neutron have been investigated as possible doorways to the exploration of new physics. The bound beta-decay (BOB) of the neutron into a hydrogen atom and an anti-neutrino offers a very elegant method to study neutrino helicities. However, this rare decay has not yet been observed for the free neutron, owing to the challenge of measuring a decay involving only electrically neutral particles and with an estimated branching ratio of only a few 106 of the three-body decay mode. During the past few years scientists from the TUM E18 Group have developed a novel experimental scheme which addresses all necessary problems associated with the observation of this two-body neutron decay in a very coherent way. The BOB experiment shall be installed at a tangential beam tube of a powerful research reactor such as the SR6 at the FRMII in Garching or H6-H7 beam tube at ILL. This talk will provide insights and ideas on how such an experiment is to be performed.

  7. Neutron bound {beta}- decay- BOB

    Energy Technology Data Exchange (ETDEWEB)

    Gabriel, M.; Berger, M.; Emmerich, R.; Faestermann, T.; Gutsmiedl, E.; Hartmann, F.J.; Paul, S.; Ruschel, S.; Schoen, J.; Schott, W.; Schubert, U.; Trautner, A. [Physik-Department, TUM, 85748 Garching (Germany); Engels, R. [Institut fuer Kernphysik, Forschungszentrum Juelich, 52425 Juelich (Germany); Fierlinger, P. [Excellence Cluster Universe, TUM, 85748 Garching (Germany); Hertenberger, R. [Sektion Physik, LMU, 85748 Garching (Germany); Roehrmoser, R. [FRM2, TUM, 85748 Garching (Germany); Udem, T. [Max-Planck-Institut fuer Quantenphysik, 85748 Garching (Germany)

    2011-07-01

    The bound neutron {beta}-decay(BOB) into a hydrogen atom and an electron antineutrino is investigated.The hyper-fine-state population of the monoenergetic hydrogen atoms (326.3 eV) yields the neutrino left-handed-ness or a possible right-handed admixture and possible small scalar and tensor contributions to the weak force. Preexperiments to measure the BOB H(2s) atoms have been done or are being set up using ionizer and RF discharge proton sources, a Wien filter, Cs and Ar cells, a spin filter, electric counter and accelerating fields, a double focusing magnet and a solar blind PM for the Lyman-{alpha} photons. In a first experiment, the charge exchange of the H(2s) atoms into H{sup -}, offering a selective method to discriminate these states against background, is investigated. In a second step the number of background H(2s) resulting from protons interacting with the walls of the experimental setup are determined. For this a quenching E field and a solar blind PM are used.

  8. Pista de bobs Innsbruck - Austria

    Directory of Open Access Journals (Sweden)

    Schmidt, W.

    1975-12-01

    Full Text Available The new artificial bob sleigh ice track was constructed on the occasion of the XII Winter Olympics. It is 1330 m long and consists of: straight stretches, right and left turn curves, supporting zones and a circular element with a 267° opening angle. The average slope between the starting point and the goal is 18%. The section of the dike consists of a 1.45 m wide horizontal part and 0.55 m high flanges except in the curves where the flange extends into a circular security arch which serves as a retaining element. For the construction the track was subdivided into 4 m long sections, each one with its own foundation. On this foundation were placed the prefabricated supporting ribs which sustain steel laths, graders of the profile in each section. The cooling pipes were placed hanging down from the ribs by way of distance plates. The complex forms a rigid unit by means of Design Mix. The track is further completed by; he cabins at the starting point and the goal; the power plant for the technical installations; access roads to the starting points for the competing bob-sleighs; roads for transportation of equipment material.La nueva pista de hielo artificial, construida con motivo de la celebración de los XII Juegos Olímpicos de Invierno, tiene 1.330 m de longitud y está formada por: tramos rectos, curvas a derecha e izquierda, zonas de apoyo y un elemento circular con un ángulo de apertura de 267º. La diferencia de altura entre la salida y la llegada es de 97 m, siendo la pendiente media del 18%. El perfil de la pista se halla constituido por una parte horizontal de 1,45 m de anchura y laterales de 0,55 m de alto, excepto en las curvas, en donde el latera! correspondiente se prolonga en un arco circular de seguridad y en elementos de retención. Para la construcción se subdividió el recorrido en secciones de 4 m, que cuentan con su propia cimentación. Sobre ésta se colocaron las nervaduras de apoyo, prefabricadas, que reciben a

  9. IDA 'Galileo Award' presented to Bob Mizon

    Science.gov (United States)

    Miles, R.

    2006-12-01

    The Galileo Award is given once per year by the European Region of the International Dark-Sky Association (IDA) for outstanding achievements in combating light pollution in Europe. I am pleased to report that the 2006 award has been made to our very own Bob Mizon, Coordinator of the BAA Campaign for Dark Skies (CfDS). As most of you will know, the CfDS was set up by concerned members of the BAA in 1989 to counter the ever-growing tide of skyglow which has tainted the night sky over Britain since the 1950s, and to address the related problems of light trespass and energy wastage. Bob has been doing an outstanding job as Coordinator of the CfDS for many years and so it was a real pleasure for me not only to attend the 6th European Dark-Skies Symposium in Portsmouth (of which Bob was one of the organisers) but also to be present when Bob received his much-deserved award from Bob Gent, Vice-President of the Board of Directors of the IDA.

  10. Bob Geldof kutsub üles heategevusele

    Index Scriptorium Estoniae

    2006-01-01

    Heategevusliku kontserdi "Live8" korraldamise eest sai Saksa muusikaauhinna Echo eripreemia iiri laulja Bob Geldof, Echo parima meeslaulja auhinna sai Robbie Williams, parima naisartisti preemia Madonna, bändi parima auhinna briti ansambel Coldplay, parima DVD auhinna austraalia bänd AC/DC albumi "Family Jewels" eest, parimaks uustulnukaks tunnistati saksa noortebänd Tokyo Hotel

  11. Kus ta siis ometi on - see Bob Dylan? / Immo Mihkelson

    Index Scriptorium Estoniae

    Mihkelson, Immo, 1959-

    2008-01-01

    Todd Haynes'i mängufilm muusik Bob Dylanist "Kus on Bob Dylan?" ("I'm Not There") : laulja alter ego kehastavad Ben Whishaw, Christian Bale, Heath Ledger, Cate Blanchett, Richard Gere, Marcus Carl Franklin : Ameerika Ühendriigid 2007. 4. juunil Saku Suurhallis toimuvast kontserdist. Jaak Johanson, Tõnis Mägi, Riho Sibul, Hannes Varblane ameerika lauljast

  12. La Bob Jones University : hier et aujourd’hui Bob Jones University : Past and Present

    Directory of Open Access Journals (Sweden)

    Mokhtar Ben Barka

    2009-11-01

    Full Text Available This article examines the separatist beliefs and practices at Bob Jones University. Firstly, it shows that despite the recent changes, this institution still represents the old face of fundamentalist higher education. Secondly, this essay focuses on the controversy around Republican candidate George W. Bush’s appearance at Bob Jones University.

  13. Obituary: Janet Akyüz Mattei, 1943-2004

    Science.gov (United States)

    Williams, Thomas R.; Willson, Lee Anne

    2004-12-01

    As director of the American Association of Variable Star Observers for thirty years, Janet Mattei led the organization through a series of major improvements and in the process, helped and influenced amateur and professional astronomers around the world. Having successfully tackled many challenges, however, Janet lost her battle with acute myelogenous leukemia on 22 March 2004. One of five children of Bella and Baruk Akyüz, Janet was born on 2 January 1943 in Bodrum, Turkey and received her pre-collegiate education there. She attended Brandeis University from 1962 until 1965 on a full Wein Scholarship, earning a BA in General Science. After eighteen months of supervising a cardiopulmonary laboratory, in 1967 she returned to Turkey to teach physics and mathematics in a high school, and then entered graduate school at Turkey's Ege University. Janet learned of the summer scholarships available at the Maria Mitchell Observatory on Nantucket, and applied to observatory director Dorrit Hoffleit for the opportunity to come back to the United States and learn about variable stars. That summer (1969) she learned to love variable stars, became acquainted with the AAVSO, and met her future husband, Michael Mattei. In 1970, after she earned her master's degree in astronomy at Ege University, Janet entered the University of Virginia where she earned a second master's degree in 1972 with a thesis on T Tauri stars. After receiving her degree in Virginia, Janet married Mike Mattei and became an assistant to Margaret Mayall at AAVSO headquarters. When Mayall decided to retire in 1973, the AAVSO Council asked Janet to assume the helm as director of the association. With such a sudden advance in her responsibilities, Janet had to rapidly learn the management side of running the organization as well as keep up with the day-to-day scientific activities - responding to requests for data, recording observations as pencil-points on paper charts, and predicting future maxima of long period variables. She accelerated a ten-year project to digitize all of AAVSO's archived as well as current data, without which a century of AAVSO observations would now be nearly inaccessible. In the mid-1970s professional interest in the cataclysmic variables began to ramp up. When she received the first requests for an AAVSO visual observing campaign coordinated with observations by orbiting observatories as well as large ground based telescopes, Janet accepted the invitation as both an opportunity and a challenge. AAVSO observers responded marvelously and, coupled with Janet's astute forecasting of when cataclysmic variables were likely to brighten again, the program emerged as one of the major technical successes of her tenure. Many AAVSO members will never forget their excitement when France Córdova came to our Fall meeting in 1978 to announce to the astronomical world that X-rays from SS Cyg had been detected by HEAO-1 on the first occasion after the satellite reached orbit when AAVSO observers reported that the star was brightening to a maximum. It was a moment of tremendous pride for everyone, most of all for Janet. It was a success that was repeated frequently in over six hundred subsequent coordinated observing runs with various satellites. This success greatly increased the impact of AAVSO on current astronomical research, enhanced its reputation, and also provided a more immediate thrill for the observers than the ongoing commitment to monitor slowly varying stars. The late 1970s and early 1980s were a period of substantial inflation in our nation's economy. Furthermore, staff turnover slowed progress with the data processing work, while observations coming to AAVSO from international variable star organizations and independent observers, especially from behind the iron curtain, were increasing rapidly. Faced with rising costs at the same time additional staff was needed to pursue the data processing problems, Janet reacted characteristically: she began taking night courses in management, data processing, fund raising, and other topics that could help her handle the AAVSO work load more efficiently. Nor was her formal education in astronomy quite complete, for during that difficult period she completed writing her dissertation and earned a PhD in astronomy from Ege University in 1982. AAVSO's headquarters on Concord Avenue was increasingly crowded and also insecure, as the historical data were stored in a building that was vulnerable to fire. In August 1985 long-term AAVSO secretary and benefactor Clinton Banker Ford (BAAS, 1994:1602) solved these problems by donating a new headquarters building at 25 Birch Street in Cambridge. Janet managed the move into the AAVSO's present facilities masterfully, and then led planning for a dedication of the building combined with a celebration of the AAVSO's seventy-fifth anniversary. It is a measure of Janet's growth in stature in the professional community that Ricardo Giacconi, then director of the Space Telescope Science Institute, was the keynote speaker for the celebration and it was attended by the leaders of variable star organizations from a number of countries. The meeting marked a major turning point in the affairs of AAVSO as well as in Janet's own outlook. Substantially more confident in her abilities as a manager and leader of the organization, Janet never looked back. Janet's international contacts, through her active participation in the International Astronomical Union (IAU), led her to participate in 1987 as one of the organizers of an IAU colloquium in Paris on the contribution of amateurs to astronomy, the first of her many later involvements in the field of professional-amateur (Pro-Am) cooperation. During that meeting, the Sociétié Astronomique de France (SAF) honored Janet with their Centennial Award for her leadership in variable star astronomy and within the AAVSO. She received an invitation from the Vereniging voor Sterrenkunde, the variable star observers in Belgium for AAVSO to hold its first European meeting in Brussels in July 1990. The meeting proved a huge success, and was followed in 1997 by a second AAVSO European meeting in Sion, Switzerland and a Pan-Pacific meeting in 2003 in Hawaii. Through Janet's leadership, AAVSO reached out to the observers who were already supporting the association with their observations. One of Janet's strong interests was in education. Using a grant from the National Science Foundation, she led efforts to create Hands-On Astrophysics (HOA) based largely on variable stars and AAVSO data. Though it took several years to develop, HOA became the basis for a number of popular teacher workshops and is sure to lead many high school students into careers in science. Janet also helped many future professionals in astronomy, including Karen Meech and Peter Garnavich, and a few in other areas, by providing opportunities for them to work at headquarters during their studies or during an intermission in their formal schooling. Janet was active in, and honored by, other professional and amateur organizations. A member of the American Astronomical Society (AAS), she received the AAS's George van Biesbroeck award in 1993, served on the AAS Annenberg Award Committee (1994-1997) and served as the first chair of the AAS Professional Amateur Cooperation Committee. Also in 1993, the Astronomical League with their Leslie Peltier Award honored Janet for her leadership of the AAVSO and contributions to variable star astronomy. Janet was elected a director of the Astronomical Society of the Pacific (ASP) and served six years in that capacity (1994-2000), co-chairing at least one Pro-Am workshop with the ASP. She was a member of three IAU Commissions over her thirty-five years of membership in that organization. In 1995, Janet was honored by the award of the Royal Astronomical Society's Jackson-Gwilt Medal and was the first recipient of the Giovanni Battista Lacchini Award for collaboration with amateur astronomers from Unione Astrofili Italiana. To honor her professional achievements, an asteroid was named for her (11695 Mattei). She always felt that these awards honored not just of her own work, but also the contributions of the members and observers who make up the AAVSO community. Janet Mattei left a very different AAVSO than the one she took over in 1973. From 150,000 observations arriving annually and being handled on paper, now 500,000 arrive each year and are mostly processed and posted automatically. The association has a substantial endowment and owns its headquarters building in Cambridge, Massachusetts. The historical archive has been put into usable form, following two multi-year investments in digitization and validation. The activities of the AAVSO have been extended to include notifying space and ground observatories that particular objects are erupting and to capturing short-lived gamma ray burst afterglows. The organization's ties to those with similar missions around the world have been strengthened and, increasingly, the AAVSO's International Variable Star Database incorporates their data. Janet's final illness was followed, through email bulletins, by hundreds of her friends and colleagues around the world. Characteristically, during a remission-and-recovery time between treatments, Janet reached out by phone and email to many of her AAVSO associates and friends, and resumed her habit of sending appropriate cards for special occasions. The more than 200 email "memoriam" notes posted on the AAVSO web site after her death show that all who knew her, even if only briefly, considered her a friend, a mentor, or a fine example of a scientist and leader.

  14. Public lecture | "Science and society" by Bob Jones | 22 May

    CERN Multimedia

    2014-01-01

    Public lecture: "Science and society: the impact of computing at CERN on society" by Bob Jones 22 May at 7.30 p.m. Globe of Science and Innovation Lecture in English, translated in French. Entrance free. Limited number of seats. Reservation essential: +41 22 767 76 76 or cern.reception@cern.ch

  15. Life in the Pinball Machine: Looking Back with Bob Mager

    Science.gov (United States)

    Taylor, Ray

    2005-01-01

    At 81 years old, Robert F. (Bob) Mager is the granddaddy of modern performance analysis and instructional design techniques. Although he has retired from the profession, he is still actively learning. He is currently working on his fourth novel, and is also an award-winning ventriloquist and is taking flamenco lessons. Perhaps best known in the…

  16. Essay: Bob Siemann-SLC Days at SLAC

    Energy Technology Data Exchange (ETDEWEB)

    Raubenheimer, Tor O.; /SLAC

    2011-11-14

    Bob Siemann was a great experimentalist and an excellent teacher.We will greatly miss him. Bob came to SLAC in early 1991 to work on the Stanford Linear Collider (SLC). The SLC was a challenging accelerator which began operating in the late 1980's but still had numerous obstacles to be overcome years into operation. One of the compounding difficulties was making reproducible measurements, since the stability of the collider was poor and the diagnostics were insufficient. Bob dove into this challenge and helped design experiments and diagnostics that provided further clarity. I first got to know Bob while I was still a graduate student, trying to finish my thesis and performing some experimental studies on the SLC, which, at the time, was proving to be very difficult. Most of my expertise had been in beam theory and simulation. Dealing with the real issues of the accelerator was challenging. Bob helped me understand the difference between systematic and statistical errors, and separate operational issues from the fundamental physics. His way of teaching was not to provide an explanation but to ask enough questions so that I could find the answer on my own - this was the best way to learn. I later asked Bob to be a reader on my thesis. As in all things, he took this role extremely seriously. He read through the draft and marked every page to the point where I was regretting my decision. However, his questions again helped me understand my own work better and greatly improved my thesis. Bob was also the de facto leader of an effort focused on the damping rings and the bunch compressors. He was great to work with. He made people think for themselves and refused to simply provide answers. He also worked hard himself, expressing real interest and curiosity. After the studies of the SLC damping rings identified a sawtooth instability due to the vacuum chamber impedance as a source of many downstream fluctuations, Bob took charge of upgrading the rings. As part of

  17. A C-terminal acidic domain regulates degradation of the transcriptional coactivator Bob1.

    Science.gov (United States)

    Lindner, John M; Wong, Christina S F; Möller, Andreas; Nielsen, Peter J

    2013-12-01

    Bob1 (Obf-1 or OCA-B) is a 34-kDa transcriptional coactivator encoded by the Pou2af1 gene that is essential for normal B-cell development and immune responses in mice. During lymphocyte activation, Bob1 protein levels dramatically increase independently of mRNA levels, suggesting that the stability of Bob1 is regulated. We used a fluorescent protein-based reporter system to analyze protein stability in response to genetic and physiological perturbations and show that, while Bob1 degradation is proteasome mediated, it does not require ubiquitination of Bob1. Furthermore, degradation of Bob1 in B cells appears to be largely independent of the E3 ubiquitin ligase Siah. We propose a novel mechanism of Bob1 turnover in B cells, whereby an acidic region in the C terminus of Bob1 regulates the activity of degron signals elsewhere in the protein. Changes that make the C terminus more acidic, including tyrosine phosphorylation-mimetic mutations, stabilize the instable murine Bob1 protein, indicating that B cells may regulate Bob1 stability and activity via signaling pathways. Finally, we show that expressing a stable Bob1 mutant in B cells suppresses cell proliferation and induces changes in surface marker expression commonly seen during B-cell differentiation.

  18. Alice and Bob: Reconciling Formal Models and Implementation

    DEFF Research Database (Denmark)

    Almousa, Omar; Mödersheim, Sebastian Alexander; Viganò, Luca

    2015-01-01

    This paper defines the “ultimate” formal semantics for Alice and Bob notation, i.e., what actions the honest agents have to perform, in the presence of an arbitrary set of cryptographic operators and their algebraic theory. Despite its generality, this semantics is mathematically simpler than any...... previous attempt. For practical applicability, we introduce the language SPS and an automatic translation to robust real-world implementations and corresponding formal models, and we prove this translation correct with respect to the semantics....

  19. Acerca de la visita de Bob Dylan a la Argentina

    OpenAIRE

    Miranda, Andrés Nicolás

    2008-01-01

    El arribo y la presentación de Bob Dylan en nuestro país puede ser utilizado como excusa no sólo para repasar los pormenores del hecho en sí, sino también para enlazarlos con una pregunta por el tiempo y un tipo de memoria en tanto categorías básicas al analizar eventos, personas u obras culturales “persistentes”, que atraviesan épocas y transformaciones de su propio campo. Se puede entonces discutir la facilidad con la que se coloca la persistencia cerca del historicismo y suele decirse, por...

  20. Head-bobbing behavior in foraging Whooping Cranes

    Science.gov (United States)

    Cronin, T.; Kinloch, M.; Olsen, G.

    2006-01-01

    Many species of cursorial birds 'head-bob', that is, they alternately thrust the head forward, then hold it stiII as they walk. Such a motion stabilizes visual fields intermittently and could be critical for visual search; yet the time available for stabilization vs. forward thrust varies with walking speed. Whooping Cranes (Grus americana) are extremely tall birds that visually search the ground for seeds, berries, and small prey. We examined head movements in unrestrained Whooping Cranes using digital video subsequently analyzed with a computer graphical overlay. When foraging, the cranes walk at speeds that allow the head to be held still for at least 50% of the time. This behavior is thought to balance the two needs for covering as much ground as possible and for maximizing the time for visual fixation of the ground in the search for prey. Our results strongly suggest that in cranes, and probably many other bird species, visual fixation of the ground is required for object detection and identification. The thrust phase of the head-bobbing cycle is probably also important for vision. As the head moves forward, the movement generates visual flow and motion parallax, providing visual cues for distances and the relative locations of objects. The eyes commonly change their point of fixation when the head is moving too, suggesting that they remain visually competent throughout the entire cycle of thrust and stabilization.

  1. Fotograaf Bob Sacha näitab vaatajale maailma uue pilgu läbi / Bob Sacha ; interv. Märten Kross

    Index Scriptorium Estoniae

    Sacha, Bob

    2004-01-01

    Eesti Loova Foto Keskuse pilootprojektina korraldatud National Geographicu fotograafi Bob Sacha seminar toimus Von Krahli teatris. Fotokeskuse asutaja intervjuu Poola päritolu fotoajakirjanikuga tema tööst ja Eesti-muljetest

  2. Kuus näitlejat, üks Bob Dylan / Jaanus Noormets

    Index Scriptorium Estoniae

    Noormets, Jaanus

    2008-01-01

    Todd Haynes'i mängufilm muusik Bob Dylanist "Kus on Bob Dylan?" ("I'm Not There") : laulja alter ego kehastavad Ben Whishaw, Christian Bale, Heath Ledger, Cate Blanchett, Richard Gere, Marcus Carl Franklin : Ameerika Ühendriigid 2007

  3. The B Fields in OB Stars (BOB) Survey

    CERN Document Server

    Morel, T; Fossati, L; Hubrig, S; Langer, N; Przybilla, N; Scholler, M; Carroll, T; Ilyin, I; Irrgang, A; Oskinova, L; Schneider, F R N; Diaz, S Simon; Briquet, M; Gonzalez, J F; Kharchenko, N; Nieva, M -F; Scholz, R -D; de Koter, A; Hamann, W -R; Herrero, A; Apellaniz, J Maiz; Sana, H; Arlt, R; Barba, R; Dufton, P; Kholtygin, A; Mathys, G; Piskunov, A; Reisenegger, A; Spruit, H; Yoon, S -C

    2014-01-01

    The B fields in OB stars (BOB) survey is an ESO large programme collecting spectropolarimetric observations for a large number of early-type stars in order to study the occurrence rate, properties, and ultimately the origin of magnetic fields in massive stars. As of July 2014, a total of 98 objects were observed over 20 nights with FORS2 and HARPSpol. Our preliminary results indicate that the fraction of magnetic OB stars with an organised, detectable field is low. This conclusion, now independently reached by two different surveys, has profound implications for any theoretical model attempting to explain the field formation in these objects. We discuss in this contribution some important issues addressed by our observations (e.g., the lower bound of the field strength) and the discovery of some remarkable objects.

  4. Refining Uranium: Bob Wiseman’s Ecomusicological Puppetry

    Directory of Open Access Journals (Sweden)

    Mark, Andrew

    2014-05-01

    Full Text Available This paper describes Bob Wiseman’s allegorical piece, Uranium, arguing that it accesses emotion to alter the consciousness of percipients. Audiences respond with unusual intensity to Uranium’s tragic environmental narrative. By using puppet theatre, film, comedy, and song to win their trust, Wiseman is able to shock his spectators. With interviews and consideration of the semiotic content of Uranium, I explore possibilities for activation of ecological consciousness through performing arts. Building on the shared ideas of Heinrich von Kleist, Gregory Bateson, and Thomas Turino, I argue that Wiseman offers one particularly useful mechanism to advance environmental concerns and learning through the arts. This paper seeks to bridge environmental and (ethnomusicological thought, and has specific relevance to the growing field of ecomusicology, presenting a musical ethnographic case-study in singer-song-writer activism.

  5. Type of Mental of Successful Entrepreneur: A Qualitative Study of Bob Sadinos Experience

    Directory of Open Access Journals (Sweden)

    Agus Masrukhin

    2015-08-01

    Full Text Available This paper was to determine the type of mental of successful businessman Bob Sadino. So he became a major employer in the field of retail and supermarket. The theories used were personality theory and Cash flow Quadrant theory. The theories used were later associated with the analysis results obtained from the field. Research used descriptive qualitative analysis using mental of success. Results show that Bob Sadino had Business owner mental and Investor mental based on Cash flow Quadrant theory.

  6. Poly(vinyl alcohol)–LiBOB complexes for lithium–air cells

    International Nuclear Information System (INIS)

    Highlights: • Mobility and diffusivity can control conductivity even if charge carriers increase. • PVA–LiBOB electrolytes can produce high conductivity in wide temperature range. • Suitable packaging of Li–air cell can reduce moisture interaction with Li metal. -- Abstract: Poly(vinyl alcohol) or PVA complexes with lithium bis(oxalato)borate or LiBOB have been prepared by solution casting. X-ray diffraction reveals that the amorphousness of the polymer increased until 40 wt.% LiBOB salt concentration. The increase in amorphousness is accompanied by a decrease in the glass transition temperature, Tg. The diffusion coefficient of lithium ion obtained from cyclic voltammetry (CV) is 1.98 × 10−8 cm2 s−1. From infrared and impedance spectroscopic studies, it is inferred that conductivity is governed by charge carrier density, ionic mobility and diffusion coefficient for PVA incorporated with 10–40 wt.% LiBOB. However, for the sample with equal weight ratio of PVA and LiBOB, ionic mobility and diffusivity have a greater influence over charge carrier density in determining conductivity at room temperature (RT). PVA can solvate a large amount of salt and for the highest conducting composition of 60 wt.% PVA–40 wt.% LiBOB, conductivity extends from 10−4 S cm−1 at RT (25 °C) to 10−3 S cm−1 at 100 °C. This sample was tested as an electrolyte in a Li–air cell

  7. The transcriptional coactivator Bob1 promotes the development of follicular T helper cells via Bcl6.

    Science.gov (United States)

    Stauss, Dennis; Brunner, Cornelia; Berberich-Siebelt, Friederike; Höpken, Uta E; Lipp, Martin; Müller, Gerd

    2016-04-15

    Follicular T helper (Tfh) cells are key regulators of the germinal center reaction and long-term humoral immunity. Tfh cell differentiation requires the sustained expression of the transcriptional repressor Bcl6; however, its regulation in CD4(+)T cells is incompletely understood. Here, we report that the transcriptional coactivator Bob1, encoded by thePou2af1gene, promotes Bcl6 expression and Tfh cell development. We found that Bob1 together with the octamer transcription factors Oct1/Oct2 can directly bind to and transactivate theBcl6andBtlapromoters. Mixed bone marrow chimeras revealed that Bob1 is required for the expression of normal levels of Bcl6 andBTLA, thereby controlling the pool size and composition of the Tfh compartment in a T cell-intrinsic manner. Our data indicate that T cell-expressed Bob1 is directly involved in Tfh cell differentiation and required for mounting normal T cell-dependent B-cell responses.

  8. Building "Bob": A Project Exploring the Human Body at Western Illinois University Preschool Center

    Science.gov (United States)

    Brouette, Scott

    2008-01-01

    When the children at Western Illinois University Preschool Center embarked on a study of human bodies, they decided to build a life-size model of a body, organ by organ from the inside out, to represent some of the things they were learning. This article describes the building of "Bob," the human body model, highlighting the children's problem…

  9. Trojan-horse attacks on quantum key distribution with classical Bob

    Science.gov (United States)

    Yang, Yu-Guang; Sun, Si-Jia; Zhao, Qian-Qian

    2015-02-01

    Recently, Boyer et al. (Phys Rev Lett 99:140501, 2007) introduced a conceptually novel semi-quantum key distribution scheme (BKM07). Tan et al. (Phys Rev Lett 102:098901, 2009) showed that classical Bob is unable to detect Eve's eavesdropping by giving a special implementation of BKM07 protocol. In the reply, Boyer et al. (Phys Rev Lett 102:098902, 2009) gave a solution against the eavesdropping, i.e., Bob may place a filter that allows only photons with approximately specific frequency to pass just at the expected time . However, their improvement contradicts the descriptions about "classical." If the assumption of "classical" is not considered, we give a delay-photon Trojan-horse attack on BKM07 protocol and its improvement and further present a possible improvement.

  10. Barack Obama Blindness (BOB): Absence of Visual Awareness to a Single Object.

    Science.gov (United States)

    Persuh, Marjan; Melara, Robert D

    2016-01-01

    In two experiments, we evaluated whether a perceiver's prior expectations could alone obliterate his or her awareness of a salient visual stimulus. To establish expectancy, observers first made a demanding visual discrimination on each of three baseline trials. Then, on a fourth, critical trial, a single, salient and highly visible object appeared in full view at the center of the visual field and in the absence of any competing visual input. Surprisingly, fully half of the participants were unaware of the solitary object in front of their eyes. Dramatically, observers were blind even when the only stimulus on display was the face of U.S. President Barack Obama. We term this novel, counterintuitive phenomenon, Barack Obama Blindness (BOB). Employing a method that rules out putative memory effects by probing awareness immediately after presentation of the critical stimulus, we demonstrate that the BOB effect is a true failure of conscious vision. PMID:27047362

  11. Barack Obama Blindness (BOB): Absence of Visual Awareness to a Single Object.

    Science.gov (United States)

    Persuh, Marjan; Melara, Robert D

    2016-01-01

    In two experiments, we evaluated whether a perceiver's prior expectations could alone obliterate his or her awareness of a salient visual stimulus. To establish expectancy, observers first made a demanding visual discrimination on each of three baseline trials. Then, on a fourth, critical trial, a single, salient and highly visible object appeared in full view at the center of the visual field and in the absence of any competing visual input. Surprisingly, fully half of the participants were unaware of the solitary object in front of their eyes. Dramatically, observers were blind even when the only stimulus on display was the face of U.S. President Barack Obama. We term this novel, counterintuitive phenomenon, Barack Obama Blindness (BOB). Employing a method that rules out putative memory effects by probing awareness immediately after presentation of the critical stimulus, we demonstrate that the BOB effect is a true failure of conscious vision.

  12. Bob and Readers%鲍勃和他的读者

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    @@ Hello! Bob! I am not sure if you still remember me, a reader of Overseas English and a member of the Foreign Language Faculty of Ningbo University. I really like reading your articles. I am writing to ask for your help. I am doing research on the "Chinese Traditional Culture." I would like to get some thoughts from foreigners. I hope you can tell me what you think about it.

  13. Characterization of pore and crystal structure of synthesized LiBOB with varying quality of raw materials as electrolyte for lithium-ion battery

    Science.gov (United States)

    Lestariningsih, Titik; Ratri, Christin Rina; Wigayati, Etty Marty; Sabrina, Qolby

    2016-02-01

    Characterization of pore structure and crystal structure of the LiB(C2O4)2H2O or LIBOB compound has been performed in this study. These recent years, research regarding LiBOB electrolyte salt have been performed using analytical-grade raw materials, therefore this research was aimed to synthesized LiBOB electrolyte salt using the cheaper and abundant technical-grade raw materials. Lithium hydroxide (LiOH), oxalic acid dihydrate (H2C2O4.2H2O), and boric acid (H3BO3) both in technical-grade and analytical-grade quality were used as raw materials for the synthesis of LiBOB. Crystal structure characterization results of synthesized LiBOB from both technical-grade and analytical-grade raw materials have shown the existence of LiBOB and LiBOB hydrate phase with orthorombic structure. These results were also confirmed by FT-IR analysis, which showed the functional groups of LiBOB compounds. SEM analysis results showed that synthesized LiBOB has spherical structure, while commercial LiBOB has cylindrical structure. Synthesized LiBOB has a similar pore size of commercial LiBOB, i.e. 19 nm (mesoporous material). Surface area of synthesized LiBOB from analytical-grade raw materials and technical-grade materials as well as commercial LIBOB were 88.556 m2/g, 41.524 m2/g, and 108.776 m2/g, respectively. EIS analysis results showed that synthesized LiBOB from technical-grade raw materials has lower conductivity than synthesized LiBOB from analytical-grade raw materials.

  14. BOB-RED queue management for IEEE 802.15.4 wireless sensor networks

    Directory of Open Access Journals (Sweden)

    Wu Jean-Lien

    2011-01-01

    Full Text Available Abstract Multimedia services over resource constrained wireless sensor networks (WSNs face a performance bottleneck issue from the gateway node to the sink node. Therefore, the queue management at the gateway node is crucial for diversified messages conveyed from the front nodes to the sink node. In this article, beacon order-based random early detection (BOB-RED queue management is proposed. BOB-RED is a dynamic adaptation scheme based on adjusting beacon interval and superframe duration in the IEEE 802.15.4 MAC superframe accompanied with RED queue management scheme to increase the transmission efficiency of multimedia over WSNs. We focus on the performance improvement upon different traffic loads over WSNs. Evaluation metrics include end-to-end delay, packet delivery ratio, and energy consumption in IEEE 802.15.4 beacon enabled mode. Simulation results show that BOB-RED can effectively decrease end-to-end delay and energy consumption compared to the DropTail scheme.

  15. Bob Larson谈中国的风险投资--Woodside Fund常务董事访谈

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@ WoodSide Fund是美国著名的风险投资公司之一,Bob Larson先生是该公司的常务董事,记者在E北京2001风险投融资大会上,就风险投资在中国的发展问题上,采访了Bob Larson先生.

  16. Bob Meyer (right), acting deputy director of NASA Dryden, shakes hands with Les Bordelon, executive

    Science.gov (United States)

    2002-01-01

    Bob Meyer (on the right), acting deputy director of NASA's Dryden Flight Research Center, Edwards, California, shakes hands with Les Bordelon, executive director of Edwards Air Force Base. The handshake represents Dryden's acceptance of an Air Force C-20A delivered from Ramstein Air Base, Germany. The aircraft will be modified to carry equipment and experiments in support of both NASA and U.S. Air Force projects. The joint use of this aircraft is a result of the NASA Dryden/Edwards Air Force Base Alliance which shares some resources as cost-cutting measures.

  17. Bob W. WHITE : Rumba Rules. The Politics of Dance Music in Mobutu’s Zaire

    OpenAIRE

    Martin, Denis-Constant

    2011-01-01

    Si la musique congolaise est l’une des musiques de danse urbaine les plus populaires d’Afrique, l’une de celles qui a le plus influencé les musiques d’autres pays, elle demeure assez peu étudiée. Parmi les ouvrages qui lui ont été consacrés, on peut retenir ceux de Sylvain Bemba (1984), de Manda Tchebwa (1996) et de Gary Stewart (2000), auxquels il faut ajouter la biographie de Franco par Graeme Ewens (1994). Le livre de Bob White vient donc compléter une bibliographie parcimonieuse et permet...

  18. Up-Regulation of BOB.1/OBF.1 Expression in Normal Germinal Center B Cells and Germinal Center-Derived Lymphomas

    OpenAIRE

    Greiner, Axel; Müller, Kerstin B.; Hess, Jochen; Pfeffer, Klaus; Müller-Hermelink, H. Konrad; Wirth, Thomas

    2000-01-01

    The BOB.1/OBF.1/OCAB.1 protein is a lymphocyte-specific transcriptional coactivator. It interacts with the Oct1 and Oct2 transcription factors and contributes to the transcriptional activity of octamer motifs. The analysis of established B cell lines had suggested that BOB.1/OBF.1 is constitutively expressed at all stages of B cell development. Here we show that expression of BOB.1/OBF.1 is regulated within the B cell lineage. Specifically, germinal center B cells show highly increased BOB.1/...

  19. Impact of Current-Wave Interaction on Storm Surge Simulation: A Case Study for Hurricane Bob

    Science.gov (United States)

    Sun, Y.; Chen, C.; Beardsley, R. C.; Xu, Q.; Qi, J.; Lin, H.

    2012-12-01

    Hurricane Bob moved up the US east coast and crossed over southern New England and the Gulf of Maine (with peak marine winds up to 100 mph) on 19-20 August 1991, causing significant damage along the coast and shelf. A three-dimensional fully wave-current coupled Finite-Volume Community Ocean Model (FVCOM) system was developed and applied to simulate and examine the coastal ocean responses to Hurricane Bob, Results from process study-oriented experiments show that wave-current interaction caused a significant change of the current direction and mixing, but had relatively little contribution to the maximum sea level along the coast. Diagnostic analyses suggest that the contribution of hurricane-derived wave-current interaction to the net water flux varies in space and time. While sea level change along the coast was mainly driven by the barotropic water flux and the vertically integrated water transports were essentially the same for cases with and without water stratification, the hurricane-induced wave-current interaction could generate strong vertical current shear in the stratified areas, leading to strong offshore transport near the bottom and enhanced water mixing over the continental shelf. Stratification also could result in a significant difference of water currents around islands where the water is not vertically well mixed.

  20. Alice-Bob Physics: Coherent Solutions of Nonlocal KdV Systems

    CERN Document Server

    Lou, S Y

    2016-01-01

    In natural and social science, many events happened at different space-times may be closely entangled or correlated. Two events, $A$ (Alice) and $B$ (Bob) are defined as correlated if one event is determined by another, say, $B=\\hat{f}A$ for suitable $\\hat{f}$ operators. Can we find these kinds of correlated solutions from the known physically significant models? Alternatively, can we establish/derive some significant physical models to describe these kinds of correlated phenomena? Taking KdV and coupled KdV systems as examples, we can find some types of models (defined as Alice-Bob KdV systems) to exhibit the existence on the correlated solutions linked with two events, event $A=A(x,\\ t)$ and event $B=B(x',\\ t')=\\hat{f}A$ happened at $\\{x,\\ t\\}$ and $\\{x',\\ t'\\}$ respectively. The idea of this letter is valid not only for the physical problems related to the KdV systems but also for all physical problems which can be described by arbitrary continuous or discrete mathematical models.

  1. On vision in birds: coordination of head-bobbing and gait stabilises vertical head position in quail

    Science.gov (United States)

    2014-01-01

    Introduction Head-bobbing in birds is a conspicuous behaviour related to vision comprising a hold phase and a thrust phase. The timing of these phases has been shown in many birds, including quail, to be coordinated with footfall during locomotion. We were interested in the biomechanics behind this phenomenon. During terrestrial locomotion in birds, the trunk is subjected to gait-specific vertical oscillations. Without compensation, these vertical oscillations conflict with the demands of vision (i.e., a vertically stable head position). We tested the hypothesis that the coordination between head-bobbing and trunk movement is a means of reconciling the conflicting demands of vision and locomotion which should thus vary according to gait. Results Significant differences in the timing of head-bobbing were found between gaits. The thrust phase was initiated just prior to the double support phase in walking (vaulting) trials, whereas in running (bouncing) trials, thrust started around midstance. Altering the timing of head-trunk-coordination in simulations showed that the timing naturally favoured by birds minimizes the vertical displacement of the head. When using a bouncing gait the timing of head bobbing had a compensatory effect on the fluctuation of the potential energy of the bird’s centre of mass. Conclusion The results are consistent with expectations based on the vertical trunk fluctuations observed in biomechanical models of vaulting and bouncing locomotion. The timing of the head-bobbing behaviour naturally favoured by quail benefits vision during vaulting and bouncing gaits and potentially helps reducing the mechanical cost associated with head bobbing when using a bouncing gait. PMID:24666790

  2. Sonic Booms on Big Structures (SonicBOBS) Phase I Database; NASA Dryden Sensors

    Science.gov (United States)

    Haering, Edward A., Jr.; Arnac, Sarah Renee

    2010-01-01

    This DVD contains 13 channels of microphone and up to 22 channels of pressure transducer data collected in September, 2009 around several buildings located at Edwards Air Force Base. These data were recorded by NASA Dryden. Not included are data taken by NASA Langley and Gulfstream. Each day's data is in a separate folder and each pass is in a file beginning with "SonicBOBS_" (for microphone data) or "SonicBOBSBB_" (for BADS and BASS data) followed by the month, day, year as two digits each, followed by the hour, minute, sec after midnight GMT. The filename time given is for the END time of the raw recording file. In the case of the microphone data, this time may be several minutes after the sonic boom, and is according to the PC's uncalibrated clock. The Matlab data files have the actual time as provided by a GPS-based IRIG-B signal recorded concurrently with the data. Microphone data is given for 5 seconds prior to 20 seconds after the sonic boom. BADS and BASS data is given for the full recording, 6 seconds for the BADS and 10 seconds for the BASS. As an example of the naming convention, file "SonicBOBS_091209154618.mat" is from September 12, 2009 at 15:46:18 GMT. Note that data taken on September 12, 2009 prior to 01:00:00 GMT was of the Space Shuttle Discovery (a sonic boom of opportunity), which was on September 11, 2009 in local Pacific Daylight Time.

  3. No man is an island. A personal tribute to Bob Blanchard and ethoexperimental approaches to the study of behaviour.

    Science.gov (United States)

    Rodgers, Robert John

    2015-07-01

    I first met Bob Blanchard at an international conference in Paris some 40 years ago. We collaborated intensively during the late 1980s/early 1990s on the ethopharmacology of antipredator defence in wild and laboratory rats, and remained good friends until his untimely passing in November 2013. Bob will undoubtedly be remembered as one of the most influential behavioural neuroscientists of the 20th century and, with Caroline, the most eloquent advocate of ethoexperimental approaches to the study of behaviour. In this brief trip down memory lane, I describe when and where Bob and I first met and how, over a lengthy period, he directly and indirectly helped shape my own research career. His profound influence in this regard is illustrated by reference to not only our collaborative research on antipredator behaviour but also my other work on the ethopharmacology of agonistic behaviour, social conflict analgesia, anxiety, and appetite. The element common to all of this work has been ethoexperimental analysis and, for teaching me the true value of this approach, I shall always remain indebted to the big man. Literally and figuratively, Bob was most certainly larger than life. PMID:25497885

  4. De Wet BOB Titels IVa en V in de praktijk : besluitvorming over bijzondere opsporingsbevoegdheden in de aanpak van georganiseerde criminaliteit

    NARCIS (Netherlands)

    Krommendijk, M.; Terpstra, J.; Kempen, P.H. van

    2009-01-01

    De Wet BOB biedt twee grondslagen voor de bevoegdheid gebruik te maken van bijzondere opsporingsmethoden, zoals bijv. tappen, inkijkoperaties en infiltratie. Ten eerste kunnen deze bevoegdheden worden toegepast op basis van een verdenking van een concreet strafbaar feit. Er is dan sprake van een 'tr

  5. 新官上任Bob Agnes带领泰克激活中国市场

    Institute of Scientific and Technical Information of China (English)

    黄秀玲

    2004-01-01

    测量仪器主要供应商泰克(Tektronix)公司开拓中国市场动作频频,日前任命Bob Agnes为亚太区销售及销售运营副总裁,负责管理泰克公司亚太区业务的运营事务,中国市场尤为其重心所在。

  6. La fotografia tra Arte e Scienza sociale. Arturo Ghergo, Bob Richardson, Bettina Rheims

    Directory of Open Access Journals (Sweden)

    Alessandra Olivares

    2015-12-01

    Full Text Available What does the photography in contemporary visual culture? In the ever increasing interference between art and society, photography took over, as you can see, a leading role in what Enrico Menduni defines the process of "picture show", especially if it isconsidered in its close relationship with the advertising industry. However you cannot ignore the fact that, being closely bound to functions that is responsible, photography is also a social practice. These considerations have a concrete response in the contemporary art. Arturo Ghergo (1901-1959, Bob Richardson (1928-2005 and Bettina Rheims (1952 are artists with very different poetics that while making photographs on commission (for movies, advertising, fashion and magazines told through pictures their time (and the aspects of reality that have characterized reaching high and recognized results of artistic and aesthetic value. They are just three of the many photographers who put us in front of the hybrid status of photography as "a medium [...] inextricably linked to two aspects: aesthetic and sociological" (Dorfles 2012. Discussions on the border between photography-craft and photography-art, which long have marked and restricted the destiny of many photographers, today finally appear anachronistic, but not entirely overcome. We see more and more often a dissolution of identity between the two areas with important examples of the deep connection of the dichotomy between art and social aspects. If it is true that art has always told, interpreted and reflected on the reality that is part, what seems interesting to highlight is the fact that the impact on the collective imaginary that new visual media, photography in primis, have had and continue to have increasingly appears to have no background. Therefore, art has never been so close to life.

  7. Influence of continental advection on aerosol characteristics over Bay of Bengal (BoB) in winter. Results from W-ICARB cruise experiment

    Energy Technology Data Exchange (ETDEWEB)

    Kharol, S.K. [Dept. of Space-Govt. of India, Balanagar, Hyderabad (India). Atmospheric Science Section; Dalhousie Univ., Halifax (Canada). Dept. of Physics and Atmospheric Science; Badarinath, K.V.S.; Sharma, A.R.; Gharai, B. [Dept. of Space-Govt. of India, Balanagar, Hyderabad (India). Atmospheric Science Section; Kaskaoutis, D.G. [Sharda Univ., Greater Noida (India). Research and Technology Development Centre

    2011-07-01

    The transport of aerosols and pollutants from continental India to the adjoining oceanic areas is a major topic of concern and several experimental campaigns have been conducted over the region focusing on aerosol characteristics and their climate implications. The present study analyzes the spectral aerosol optical depth (AOD) variations over Bay of Bengal (BoB) during Winter-Integrated Campaign for Aerosols, gases and Radiation Budget (W-ICARB) from 27 December 2008 to 30 January 2009 and investigates the influence of the adjoining landmass to the marine aerosol field. High AOD{sub 500} values (>0.7) occurred over northern BoB due to outflow of aerosols and pollutants from the densely populated Indo-Gangetic Plains (IGP); low AOD500 (0.1-0.2) was observed in central and southern BoB, far away from the mainland. The Angstrom exponent ''{alpha}'' was observed to be high (>1.2) near coastal waters, indicating relative abundance of accumulation-mode continental aerosols. On the other hand, over southern BoB its values dropped below {proportional_to}0.7. National Center for Environmental Prediction (NCEP) reanalysis data on winds at 850 and 700 hPa, along with airmass trajectories calculated using Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model, suggested transport of continental aerosols from central and northern India over the BoB. On the other hand, when the ship was crossing the eastern BoB, the aerosol loading was strongly affected by air-masses originating from Southeast Asia, causing an increase in AOD and {alpha}. Biomass-burning episodes over the region played an important role in the observed aerosol properties. Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) AOD550 and cruise measured AOD550 showed good agreement (R{sup 2} =0.86 and 0.77, respectively) over BoB, exhibiting similar AOD and spatiotemporal variation. (orig.)

  8. 会见Bob Simpson先生——AMT协会的未来掌门人

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    AMT协会是IMTS2008国际机床展览会的组织者,虽然Bob Simpson先生目前还没有正式成为AMT协会的总裁,但在10月7日以后,他将正式上任。在过去的几个星期里,他一直在了解以前的生产制造情况和贸易协会的详细情况,当然这是一件非常困难的事情。

  9. LiBOB-尿素离子液体在超级电容器中的应用%Application of room temperature ionic liquid LiBOB-urea electrolyte for supercapacitor

    Institute of Scientific and Technical Information of China (English)

    甘云萍; 李伟; 杨震宇; 古宁宇; 张荣斌; 高立军

    2009-01-01

    合成双草酸基硼酸锂(LiBOB)-尿素离子液体新型电解质,并以高比表面的活性炭为电极材料,装配成模拟电容器,对其电容特性进行了系统研究.结果表明,该超级电容器的比电容达到92 F/g,工作电压可达2.0 V以上,循环充放电近2 000次后容量损失小于8%.离子液体在超级电容器中表现出良好的电化学兼容性,具有良好的热稳定性,是超级电容器非常有前景的新型电解质.%The test capacitors composed of a pair of carbon electrodes and the novel room temperature ionic liquids based on lithium bis(oxalato)borate (LiBOB) and urea as electrolyte were assembled. A high specific capacitance of 92 F/g estimated by galvanostatic charge/discharge measurement is obtained. The working voltage of the test capacitors reach above 2.0 V. After 2 000 charge and discharge cycles, the capacity loss is just 8% of the initial discharge capacity. The room temperature ionic liquid shows good electrochemical compatibility and high thermal stability in the supercapacitor. The results demonstrate that the room temperature ionic liquid is the promising electrolyte candidate for supercapacitors.

  10. Genetic structure of the sea-bob shrimp (Xiphopenaeus kroyeri Heller, 1862; Decapoda, Penaeidae along the Brazilian southeastern coast

    Directory of Open Access Journals (Sweden)

    Carolina Moreira Voloch

    2005-01-01

    Full Text Available The sea-bob shrimp, Xiphopenaeus kroyeri, is one of the most important economic marine resources along the entire Brazilian coast. Nevertheless, despite its economic importance, no studies have examined the population genetics of this species. In this paper, we used ten allozyme loci to study the pattern of genetic structuring in X. kroyeri along the southeastern Brazilian coast. Seven of the ten analyzed loci were polymorphic, yielding observed heterozygosity values higher than those reported for other penaeid shrimps. The population from São Paulo was significantly different from the other two populations (Rio de Janeiro and Espírito Santo, which, in turn, seem to form a single panmitic unit. Therefore, our results clearly indicate that conservation policies for this species should consider the São Paulo population as an independent stock from those of Rio de Janeiro and Espírito Santo.

  11. Hot study: Investigating the risk for violative meat residues in bob veal calves fed colostrum from cows treated at dry-off with cephapirin benzathine

    Science.gov (United States)

    The objective was to complete a pilot study to investigate if violative meat residues are detected in very young bob veal calves that are fed first milking colostrum harvested from cows that were dry treated, on label, with cephapirin benzathine. First milking colostrum was collected from cows that...

  12. The Life And Death Of Bob (a.k.a. Ngc 6397) In An Introductory College-level Astronomy Class For Non-science Majors

    Science.gov (United States)

    Renee'James, C.

    2011-01-01

    We describe the use of Bob (a.k.a NGC 6397) as a conceptual anchor for a semester of "Stars and Galaxies," an introductory college-level astronomy course for non-science majors. NGC 6397 is a Hubble Heritage image, and with a variety of stellar temperatures evident in the colors, it makes a great starter image for a stars and galaxies class. As the semester progresses and student knowledge grows, the same cluster can be used to explore the topics of sizes, temperatures, luminosities, masses, distances, magnitudes, spectral types, HR Diagrams, stellar evolution, determination of cluster age, white dwarfs, blue stragglers... Virtually the entire "stars" part of the "Stars and Galaxies" class can derive from this single example, which anchors student learning to a familiar object throughout the semester. Example discussion questions and personal response (voting) questions are provided, along with comments about the structure of class, assessments, Bob's funeral, and the educational soundness of this approach. We seek collaboration with astronomy educators who would like to adopt "Bob" so that we may gauge whether this approach is measurably different from a more traditional format. "The Life and Death of Bob" was awarded a Gold Star by the Institute for Global and Environmental Strategies in July, 2010, for inspiring uses of Hubble in education.

  13. Rahvusvaheliselt pärjatud õpivara eesti keeles ja kirjanduses / Helin Puksand, Reet Bobõlski, Margit Ross ; intervjueeris Krista Kerge

    Index Scriptorium Estoniae

    Puksand, Helin, 1970-

    2015-01-01

    Eesti õpivarale antud rahvusvahelised auhinnad: Best European Learning Material Silver Award 2014 Helin Puksandi, Reet Bobõlski ja Margit Rossi eesti keele õpikule "Punkt" (2013) ja Best European Schoolbook Silver Award 2012 samade autorite eesti keele õpikule "Peegel 3" (2011). Best European Schoolbook Bronze Award 2006 Jaanus Vaiksoo, Sirje Toomla ja Kadri Liivese aabitsale "Ilus emakeel" (2005).

  14. Expression and significance of the levels of Oct-2 and Bob.1 in the lung tissues B cell of patients with tuberculosis%Oct-2、Bob.1在肺结核组织B细胞中的表达及其意义

    Institute of Scientific and Technical Information of China (English)

    苟继周; 陈心春; 乐晓华; 张香梅; 王正; 杨林

    2012-01-01

    目的 探讨肺结核组织B细胞中Oct-2、Bob.1的表达与机体免疫的关系.方法 采用免疫组织化学检测20例肺结核组织B细胞中Oct-2、Bob.1的表达情况.结果 (1)在肺结核组织生发中心的B细胞中Oct-2和Bob.1主要表达在细胞核;在无形成生发中心聚集的B细胞中,细胞核和细胞浆均呈阳性;(2)肺结核组织B细胞中Oct-2阳性的细胞数明显少于Bob.1阳性的细胞数,Oct-2和Bob.1阳性率分别为:10.8%、65.6%;(3)形成生发中心的肺结核组织B细胞中Oct-2和Bob.1阳性的细胞数明显高于无生发中心形成的肺结核组织,差异有统计学意义(P<0.05).结论 肺结核组织B细胞Oct-2表达低下和/或Oct-2、Bob.1表达不一致可能导致B细胞在发育过程中未能形成生发中心.%Objective To study the relationship between expression level of Oct-2 and Bob. 1 in patient with tuberculosis and their immune system and pathological variation. Methods Expression profile of Oct-2 and Bob. 1 were stained in lung tissues from 20 cases of tuberculosis by immunohistochemistry. Results ( 1 ) Oct-2 and Bob. 1 were mainly expressed in B cells, nucleus of germinal center in patient with tuberculosis, but both markers were expressed in B cells; nucleus and plasma formation without the germinal center. ( 2 ) The positive numbers of Oct-2 were evidently less than that Bob. 1 in lung tissues with tuberculosis and their positive rate were 10. 8% and 65. 6% respectively. ( 3 ) In lung tissues with tuberculosis, the positive numbers of Oct-2 and Bob. 1 in formation of germinal center were significantly higher than without germinal center ( P <0. 05 ). Conclusions In B cells of lung tissues with tuberculosis, the lower expression of Oct-2 and/or Oct-2 and Bob. 1 expression different may be the cause that B cell cannot form germinal center.

  15. Influence of continental advection on aerosol characteristics over Bay of Bengal (BoB in winter: results from W-ICARB cruise experiment

    Directory of Open Access Journals (Sweden)

    S. K. Kharol

    2011-08-01

    Full Text Available The transport of aerosols and pollutants from continental India to the adjoining oceanic areas is a major topic of concern and several experimental campaigns have been conducted over the region focusing on aerosol characteristics and their climate implications. The present study analyzes the spectral aerosol optical depth (AOD variations over Bay of Bengal (BoB during Winter-Integrated Campaign for Aerosols, gases and Radiation Budget (W-ICARB from 27 December 2008 to 30 January 2009 and investigates the influence of the adjoining landmass to the marine aerosol field. High AOD500 values (>0.7 occurred over northern BoB due to outflow of aerosols and pollutants from the densely populated Indo-Gangetic Plains (IGP; low AOD500 (0.1–0.2 was observed in central and southern BoB, far away from the mainland. The Angstrom exponent "α" was observed to be high (>1.2 near coastal waters, indicating relative abundance of accumulation-mode continental aerosols. On the other hand, over southern BoB its values dropped below ~0.7. National Center for Environmental Prediction (NCEP reanalysis data on winds at 850 and 700 hPa, along with air-mass trajectories calculated using Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT model, suggested transport of continental aerosols from central and northern India over the BoB. On the other hand, when the ship was crossing the eastern BoB, the aerosol loading was strongly affected by air-masses originating from Southeast Asia, causing an increase in AOD and α. Biomass-burning episodes over the region played an important role in the observed aerosol properties. Terra/Aqua Moderate Resolution Imaging Spectroradiometer (MODIS AOD550 and cruise measured AOD550 showed good agreement (R2 = 0.86 and 0.77, respectively over BoB, exhibiting similar AOD and α spatio-temporal variation.

  16. LiBOB基电解液在锂离子动力电池中的应用%The application of LiBOB based electrolyte in power Li-ion battery

    Institute of Scientific and Technical Information of China (English)

    连芳; 闫坤; 邢桃峰; 仇卫华

    2011-01-01

    The unique advantages of lithium bis(oxalate) borate (LiBOB) as electrolyte salt for power Li-ion battery and the key problems of LiBOB-based electrolyte were summarized. The review was especially focused on the effect of impurities,optimization of its solvents and the compatibility of LiBOB-based electrolyte with LiMn2O4, LiFePO4 electrodes.%介绍了双草酸硼酸锂(LiBOB)作为锂离子动力电池电解质锂盐的独特优势以及LiBOB基电解液应用中的关键问题.主要针对LiBOB基电解液中杂质影响和溶剂优化,以及与LiMnO、LiFePO正极材料的相容性进行了阐述.

  17. 锂离子电池用双草酸硼酸锂的固相合成%Solid phase synthesis of LiBOB for lithium batteries

    Institute of Scientific and Technical Information of China (English)

    张玥; 袁莉; 刘锦平; 李晓磊; 赵洪; 宋晓莉

    2011-01-01

    Synthesis of a new type lithium salt electrolyte—lithium bis ( oxalato ) borate (LiBOB) by solid phase method was introduced in detail. In preparation process,oxalic acid,lithium hydroxide,and boric acid were used as raw materials,whose amount-of-substance ratio was 2. 1: 1: 1. After mixed by ball milling, sintered at 120 ℃, and dehydrated at 240 ℃, LiBOB product could be obtained by purification with ethyl acetate. Analysis results showed the product had a complete crystal structure and a low content of impurities. Thermal analysis proved that its thermal stability was better than that of lithium hexafluorophosphate ( LiPF6 ). Battery assembled by LiBOB prepared electrolyte had a better cycle performance.Furthermore,the prepared LiBOB reached the standard of lithium salt electrolyte used for lithium-ion batteries.%详细介绍了固相法合成的一种新型电解质锂盐--双草酸硼酸锂(LiBOB).制备过程采用草酸、氢氧化锂、硼酸为原料,其物质的量比为2.1:1:1,经球磨混合后高温烧制,烧制温度为120℃、脱水温度为240℃,所得产品经乙酸乙酯提纯后即得产物.产物通过分析测定可知,其杂质含量少且晶体结构完整;并通过热分析证实其热稳定性优于六氟磷酸锂.用其制备的电解液组装的电池,循环性能较好,所制双草酸硼酸锂达到用作电池电解质锂盐的标准.

  18. Shattered Lives / Bob Fisher

    Index Scriptorium Estoniae

    Fisher, Bob

    2001-01-01

    Eesti rahvusest USA ja Kanada filmioperaator Alar Kivilo töötab edukalt Hollywoodis. USA esinduslik filmiajakiri käsitleb põhjalikult tema tööd uue mängufilmiga "The Glass House", mille režissööriks on Daniel Sackheim

  19. Rona Cran, Collage in Twentieth-Century Art, Literature, and Culture. Joseph Cornell, William Burroughs, Frank O’Hara, and Bob Dylan

    OpenAIRE

    Nicolini, Juliette

    2016-01-01

    “There isn’t a 20th century art that was not touched, rethought or merely revamped by the use of [collage]”. In keeping with Pierre Joris’s seminal assertion, Rona Cran’s essay – which is based on her PhD thesis – aims at demonstrating how collage was instrumental in the work of Joseph Cornell, William Burroughs, Frank O’Hara and Bob Dylan. Indeed, many essays in visual arts have been devoted to the analysis of collage as a means to transcend the limits of representation and to open the field...

  20. Surface characterization of the carbon cathode and the lithium anode of Li-O₂ batteries using LiClO₄ or LiBOB salts.

    Science.gov (United States)

    Younesi, Reza; Hahlin, Maria; Edström, Kristina

    2013-02-01

    The surface compositions of a MnO₂ catalyst containing carbon cathode and a Li anode in a Li-O₂ battery were investigated using synchrotron-based photoelectron spectroscopy (PES). Electrolytes comprising LiClO₄ or LiBOB salts in PC or EC:DEC (1:1) solvents were used for this study. Decomposition products from LiClO₄ or LiBOB were observed on the cathode surface when using PC. However, no degradation of LiClO₄ was detected when using EC/DEC. We have demonstrated that both PC and EC/DEC solvents decompose during the cell cycling to form carbonate and ether containing compounds on the surface of the carbon cathode. However, EC/DEC decomposed to a lesser degree compared to PC. PES revealed that a surface layer with a thickness of at least 1-2 nm remained on the MnO₂ catalyst at the end of the charged state. It was shown that the detachment of Kynar binder influences the surface composition of both the carbon cathode and the Li anode of Li-O₂ cells. The PES results indicated that in the charged state the SEI on the Li anode is composed of PEO, carboxylates, carbonates, and LiClO₄ salt. PMID:23336349

  1. Phospholipase C mediates (±)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-, but not lysergic acid diethylamide (LSD)-elicited head bobs in rabbit medial prefrontal cortex.

    Science.gov (United States)

    Schindler, Emmanuelle A D; Harvey, John A; Aloyo, Vincent J

    2013-01-23

    The phenethylamine and indoleamine classes of hallucinogens demonstrate distinct pharmacological properties, although they share a serotonin(2A) (5-HT(2A)) receptor mechanism of action (MOA). The 5-HT(2A) receptor signals through phosphatidylinositol (PI) hydrolysis, which is initiated upon activation of phospholipase C (PLC). The role of PI hydrolysis in the effects of hallucinogens remains unclear. In order to better understand the role of PI hydrolysis in the MOA of hallucinogens, the PLC inhibitor, 1-[6-((17β-3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl]-1H-pyrrole-2,5-dione (U73122), was used to study the effects of two hallucinogens, the phenethylamine, (±)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI), and the indoleamine, lysergic acid diethylamide (LSD). PI hydrolysis was quantified through release of [3H]inositol-4-phosphate from living rabbit frontocortical tissue prisms. Head bobs were counted after hallucinogens were infused into the medial prefrontal cortex (mPFC) of rabbits. Both DOI and LSD stimulated PI hydrolysis in frontocortical tissue through activation of PLC. DOI-stimulated PI hydrolysis was blocked by 5-HT(2A/2C) receptor antagonist, ketanserin, whereas the LSD signal was blocked by 5-HT(2B/2C) receptor antagonist, SB206553. When infused into the mPFC, both DOI- and LSD-elicited head bobs. Pretreatment with U73122 blocked DOI-, but not LSD-elicited head bobs. The two hallucinogens investigated were distinct in their activation of the PI hydrolysis signaling pathway. The serotonergic receptors involved with DOI and LSD signals in frontocortical tissue were different. Furthermore, PLC activation in mPFC was necessary for DOI-elicited head bobs, whereas LSD-elicited head bobs were independent of this pathway. These novel findings urge closer investigation into the intracellular mechanism of action of these unique compounds.

  2. Pretty Bird by Bob Sinclair

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Recently I was reminded of a story which my mother swears is trus (though she doesn t call me Bobby muchanymore):Back in 1958,when I was just past four years old,my parents gave me a young parakeet.My mother determinedthat our parakeet would learn to talk,and to this end sat at the microphone of a borrowed tape recorder for a full 1/2hour,saying over and over again:“Pretty bird!Pretty bird!Pretty bird!Pretty bird!...”and so on.The resultingtaped message was played for our parakeet at least once pe...

  3. Solid-state method synthesizing and analysis of electrolyte lithium salt LiBOB%电解质锂盐LiBOB的固相法合成及分析

    Institute of Scientific and Technical Information of China (English)

    张丽娟; 李法强

    2010-01-01

    将Li2CO3、H3BO3混匀后4分批加入H2C2O4,再在80~120 ℃下真空干燥20~25 h,得到双草酸硼酸锂(LiBOB)粗产品.含量测定和FT-IR、TG-DTG、XRD、SEM分析的结果表明,经乙腈提纯后的样品不带结晶水,纯度高于99.9%.

  4. LiPF6/LiBOB混合锂盐改善LiFePO4/石墨动力电池高温循环性能研究%Use of LiPF6/LiBOB blend salt for improving cycling performances of LiFePO4/graphite battery at elevated temperature

    Institute of Scientific and Technical Information of China (English)

    宋海申; 赖延清; 李劼; 刘业翔; 张治安

    2013-01-01

    分别以 LiPF6、LiBOB 和 LiPF6/LiBOB 混合盐为电解质,研究了不同电解液对 LiFePO4/石墨动力电池高温循环性能的影响。结果表明,LiBOB 盐抑制了正极溶铁行为,并提高了正极高温循环充放电效率;由于 LiBOB基电解液对正极的保护及在负极表面良好的成膜作用,使得LiFePO4/石墨电池高温循环性能得到明显改善,但是增大了电池阻抗。LiPF6/Li-BOB混合盐可以发挥 LiBOB盐的优点增加正极稳定性,在石墨表面形成致密的 SEI 膜并能够有效改善电池高温循环性能,同时避免了单纯使用 LiBOB盐时阻抗较高的缺点。使用 LiPF6/LiBOB 混合盐,利用LiPF6盐低阻抗特性及 LiBOB盐对正、负电极的保护作用,可以有效提高电池电化学性能。%LiPF6 ,LiBOB and LiPF6/LiBOB blend salt-based electrolytes were investigated for improving cycling performances of LiFePO4/graphite lithium-ion batteries at elevated temperature.It was demonstrated that dis-solution of Fe from LiFePO4 was depressed in LiBOB based electrolyte,and columbic efficiency of LiFePO4/Li cell at elevated temperature was increased;LiBOB was reduced earlier on anode surface,forming compact SEI layer;and the capacity retention of LiFePO4/graphite cells at 55℃ increases with LiBOB concentration due to protective depositions of LiBOB on cathode surface and the SEI layer on anode surface,while the impedance of the cell is increased.LiPF6/LiBOB blend salt-based electrolyte combines the advantages of the different salts and maximizes the performance of cells.When electrolytes with LiPF6/LiBOB blend salt was used,the LiFe-PO4/graphite cells have excellent capacity retention at 55℃,while the impedance was dramatically decreased.

  5. Ed Watson 1940-2006

    CERN Multimedia

    2006-01-01

    Ed Watson arrived at CERN in March 1973 to work on digital electronics and CAMAC systems under Bob Dobinson, after many years at Rolls Royce in Scotland. He joined the European Muon Collaboration in 1976, where he played a major role in the design, deployment and running of its data acquisition system (DAQ) with David Botterill, Bob Dobinson, and Vicky White. The CAMAC-ROMULUS system was by far the largest and most advanced of its time, and it became a defining standard for DAQ systems for years to come. Ed was deeply involved in the detailed planning of the control rooms and the experiment cabling, as well as sharing the responsibility for the CAMAC readout system. He had a real talent for trouble shooting and played a vital part in supporting the experiment throughout its lifetime. He offered great moral support to the younger members of the collaboration and helped them a great deal with their work. The EMC had a wonderful social life to which Ed was a major contributor - who can forget its barbecues?  In...

  6. Ed Watson - 1940-2006

    CERN Multimedia

    2006-01-01

    Ed Watson passed away suddenly on 1 August in Geneva, he was 66. He leaves his wife and two children. Ed Watson arrived at CERN in March 1973 to work on digital electronics and CAMAC systems under Bob Dobinson, after many years at Rolls Royce in Scotland. He joined the European Muon Collaboration in 1976, where he played a major role in the design, deployment and running of its data acquisition system (DAQ) with David Botterill, Bob Dobinson, and Vicky White. The CAMAC-ROMULUS system was by far the largest and most advanced of its time, and it became a defining standard for DAQ systems for years to come. Ed was deeply involved in the detailed planning of the control rooms and the experiment cabling, as well as sharing the responsibility for the CAMAC readout system. He had a real talent for trouble shooting and played a vital part in supporting the experiment throughout its lifetime. He offered great moral support to the younger members of the collaboration and helped them a great deal with their work. The...

  7. Evaluating the Efficacy of Three U.S. Department of Agriculture-Approved Antimicrobial Sprays for Reducing Shiga Toxin-Producing Escherichia coli Surrogate Populations on Bob Veal Carcasses.

    Science.gov (United States)

    2016-06-01

    Effective antimicrobial intervention strategies to reduce Shiga toxin-producing Escherichia coli (STEC) risks associated with veal are needed. This study evaluated the efficacy of lactic acid (4.5%, pH 2.0), Citrilow (pH 1.2), and Beefxide (2.25%, pH 2.3) for reducing STEC surrogates on prerigor and chilled bob veal carcasses and monitored the effects of these interventions on chilled carcass color. Dehided bob veal carcasses were inoculated with a five-strain cocktail of rifampin-resistant, surrogate E. coli bacteria.E. coli surrogates were enumerated after inoculation, after water wash, after prechill carcass antimicrobial spray application, after chilling for 24 h, and after postchill carcass antimicrobial spray application; carcass color was measured throughout the process. A standard carcass water wash (∼50°C) reduced the STEC surrogate population by 0.9 log CFU/cm(2) (P ≤ 0.05). All three antimicrobial sprays applied to prerigor carcasses delivered an additional ∼0.5-log reduction (P ≤ 0.05) of the surrogates. Chilling of carcasses for 24 h reduced (P ≤ 0.05) the surrogate population by an additional ∼0.4 log cycles. The postchill application of the antimicrobial sprays provided no further reductions. Carcass L*, a*, and b* color values were not different (P > 0.05) among carcass treatments. Generally, the types and concentrations of the antimicrobial sprays evaluated herein did not negatively impact visual or instrumental color of chilled veal carcasses. This study demonstrates that warm water washing, followed by a prechill spray treatment with a low-pH chemical intervention, can effectively reduce STEC risks associated with veal carcasses; this provides processors a validated control point in slaughter operations.

  8. Evaluating the Efficacy of Three U.S. Department of Agriculture-Approved Antimicrobial Sprays for Reducing Shiga Toxin-Producing Escherichia coli Surrogate Populations on Bob Veal Carcasses.

    Science.gov (United States)

    2016-06-01

    Effective antimicrobial intervention strategies to reduce Shiga toxin-producing Escherichia coli (STEC) risks associated with veal are needed. This study evaluated the efficacy of lactic acid (4.5%, pH 2.0), Citrilow (pH 1.2), and Beefxide (2.25%, pH 2.3) for reducing STEC surrogates on prerigor and chilled bob veal carcasses and monitored the effects of these interventions on chilled carcass color. Dehided bob veal carcasses were inoculated with a five-strain cocktail of rifampin-resistant, surrogate E. coli bacteria.E. coli surrogates were enumerated after inoculation, after water wash, after prechill carcass antimicrobial spray application, after chilling for 24 h, and after postchill carcass antimicrobial spray application; carcass color was measured throughout the process. A standard carcass water wash (∼50°C) reduced the STEC surrogate population by 0.9 log CFU/cm(2) (P ≤ 0.05). All three antimicrobial sprays applied to prerigor carcasses delivered an additional ∼0.5-log reduction (P ≤ 0.05) of the surrogates. Chilling of carcasses for 24 h reduced (P ≤ 0.05) the surrogate population by an additional ∼0.4 log cycles. The postchill application of the antimicrobial sprays provided no further reductions. Carcass L*, a*, and b* color values were not different (P > 0.05) among carcass treatments. Generally, the types and concentrations of the antimicrobial sprays evaluated herein did not negatively impact visual or instrumental color of chilled veal carcasses. This study demonstrates that warm water washing, followed by a prechill spray treatment with a low-pH chemical intervention, can effectively reduce STEC risks associated with veal carcasses; this provides processors a validated control point in slaughter operations. PMID:27296599

  9. B fields in OB stars (BOB): on the detection of weak magnetic fields in the two early B-type stars β CMa and ɛ CMa. Possible lack of a "magnetic desert" in massive stars

    Science.gov (United States)

    Fossati, L.; Castro, N.; Morel, T.; Langer, N.; Briquet, M.; Carroll, T. A.; Hubrig, S.; Nieva, M. F.; Oskinova, L. M.; Przybilla, N.; Schneider, F. R. N.; Schöller, M.; Simón-Díaz, S.; Ilyin, I.; de Koter, A.; Reisenegger, A.; Sana, H.

    2015-02-01

    Only a small fraction of massive stars seem to host a measurable structured magnetic field, whose origin is still unknown and whose implications for stellar evolution still need to be assessed. Within the context of the "B fields in OB stars (BOB)" collaboration, we used the HARPSpol spectropolarimeter to observe the early B-type stars β CMa (HD 44743; B1 II/III) and ɛ CMa (HD 52089; B1.5II) in December 2013 and April 2014. For both stars, we consistently detected the signature of a weak (constant with time. We determined the physical parameters of both stars and characterise their X-ray spectrum. For the β Cep star β CMa, our mode identification analysis led to determining a rotation period of 13.6 ± 1.2 days and of an inclination angle of the rotation axis of 57.6 ± 1.7°, with respect to the line of sight. On the basis of these measurements and assuming a dipolar field geometry, we derived a best fitting obliquity of about 22° and a dipolar magnetic field strength (Bd) of about 100 G (60 currently available instrumentation and techniques imply that weak fields might be more common than currently observed. Our results show that, if present, even relatively weak magnetic fields are detectable in massive stars and that more observational effort is probably still needed to properly access the magnetic field incidence. Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programme ID 088.A-9003(A) and ID 191.D-0255(D, F).

  10. "Vulf, prijatel moi!" / Valeria Bobõljova

    Index Scriptorium Estoniae

    Bobõljova, Valeria, 1945-

    1999-01-01

    Varem ilmunud: Molodjozh Estonii : Russki Potshtaljon, 1998, 16. nov., lk. 8. A. Pushkini suhetest Aleksei Wulfiga ja tema emaga, Trigorskoje mõisa perenaise Praskovja Ossipovaga. A. Wulf õppis a-tel 1822 - 1826 Tartu ülikoolis

  11. Anna Wintour: The Truth behind the Bob

    Science.gov (United States)

    Kloeppel, Tara

    2011-01-01

    While her occupation, and the stereotypes associated with running a fashion magazine, may not initially seem to be worthy of scholastic attention, careful study of Wintour's influence reveals insight into the rhetorical tactics penetrating fashion culture in America, and perhaps more broadly, pop culture in America.

  12. Interview with Bob Cousins - Deputy spokesperson CMS

    CERN Multimedia

    CERN Audiovisual Service

    2008-01-01

    Q. 1. What has it taken to get the LHC project from its beginnings to the verge of first beams? Q. 2. What can be expected to happen on First Beam Day? Q. 3. What happens next in the story? Q. 4. What does this mean to you personally?

  13. Bob Scott: Tallinn 2011 saab oma preemiaraha kätte / Bob Scott ; intervjueerinud Teele Tammeorg

    Index Scriptorium Estoniae

    Scott, Bob

    2010-01-01

    Euroopa kultuuripealinnade hindamiskomisjoni esimees räägib oma kohtumisest Tallinna linnapea Edgar Savisaare ja kultuuriministri Laine Jänesega ning sellest, et Tallinnal ja Eestil tuleb lisatoetuse saamiseks saata Euroopa Komisjonile vaid kiri, milles nad kinnitavad, et kultuuripealinna programmi jaoks on raha olemas

  14. Biologia e pesca do camarão sete-barbas Xiphopenaeus kroyeri (Heller (Crustacea, Penaeidae, na Armação do Itapocoroy, Penha, Santa Catarina, Brasil Fishery and Biology of the sea-bob-shrimp Xiphopenaeus kroyeri (Heller (Crustacea, Penaeidae, at Armação do Itapocoroy, Penha, Santa Catarina, Brazil

    Directory of Open Access Journals (Sweden)

    Joaquim O. Branco

    2005-12-01

    Full Text Available A pesca artesanal do camarão sete-barbas é denominada "pesca de sol a sol" e realizada em grande escala no litoral brasileiro, apresentando uma significativa importância econômica, histórica, social e cultural. Atualmente, a pesca desse camarão é considerada a de maior interesse econômico e o segundo recurso pesqueiro nas regiões Sudeste-Sul do Brasil. Com o objetivo de estudar a biologia e pesca do camarão sete-barbas na Armação do Itapocoroy, Penha (26º40'-26º47'S e 48º36'-48º38'W, durante o período de agosto de 1996 a julho de 2003 foram realizadas coletas mensais com 30 minutos de duração. Foram registrados o número e a biomassa dos exemplares por arrasto, e entre anos de 1996-1997 e 1999-2001, também foram anotados o sexo, o comprimento e peso total, estádio de maturação. Além dessas informações, entre agosto de 1998 a julho de 1999 foi analisado a dieta natural da espécie. X. kroyeri (Heller, 1862 apresentou comprimento total variando entre 3,0 e 16,0 cm e flutuações sazonais na abundância e biomassa, com as maiores taxas de captura ocorreram durante os meses de verão e outono. A relação peso/comprimento indicou um padrão de crescimento tendendo ao isométrico com tamanho de primeira maturação entre 7,3 a 7,9 cm, alcançados em seis meses de idade. A espécie apresentou dois picos de desova ao longo do ano, sendo que a pesca artesanal vem atuando com maior intensidade sobre o estoque adulto. O espectro trófico foi composto por 30 itens, sendo que os Gammaridae, areia, outros Crustacea e matéria orgânica os elementos básicos na dieta da espécie. Em média, 67,82 barcos atuam durante oito meses por ano na pesca do camarão sete-barbas na Armação do Itapocoroy, podendo capturar em torno de 170 toneladas/ano.The artisanal fishery of the sea-bob-shrimp is known as "sun to sun fishery" and is developed in large scale along the Brazilian coast, playing a significant economic, historical, social and

  15. The Moving Centre of Mass of a Leaking Bob

    Science.gov (United States)

    Arun, P.

    2010-01-01

    The evaluation of variation in the oscillation time period of a simple pendulum as its mass varies proves a rich source of discussion in a physics classroom, overcoming erroneous notions carried forward by students as to what constitutes the pendulum's length, by picking up only the results of approximations and ignoring the rigorous definition.…

  16. The Moving Center of Mass of a Leaking Bob

    CERN Document Server

    Arun, P

    2010-01-01

    The evaluation of variation in oscillation time period of a simple pendulum as its mass varies proves a rich source of discussion in a physics class-room, overcoming erroneous notions carried forward by students as to what constitutes a pendulum's length due to picking up only the results of approximations and ignoring the rigorous definition. The discussion also presents a exercise for evaluating center of mass of geometrical shapes and system of bodies. In all, the pedagogical value of the problem is worth both theoretical and experimental efforts. This article discusses the theoretical considerations.

  17. 75 FR 16735 - Action Affecting Export Privileges; Bob Rahimzadeh

    Science.gov (United States)

    2010-04-02

    ... approximately 174 rolls of hog hair filter media, part number HH60130 and valued at approximately $11,687.76... financed approximately 174 rolls of hog hair filter media, part number HH60130 and valued at approximately... Regulations by facilitating or coordinating the export of approximately 185 rolls of hog hair filter...

  18. Snipe Bob: A Game for Android Mobile Phone

    OpenAIRE

    Wu, Danni

    2014-01-01

    Android is an open source operating system based on Linux, which is mainly used in mobile devices. The data at end of 2010 shows that Android system has become the world’s largest Smartphone operating system. Furthermore, in the application store, the downloads of game is the largest of all of the application types. According to the situation above, the Android game has large market. The game development is not only about the programming, but also about the art and creation. The concept is th...

  19. Portret : dotsh ili mat? / Valeria Bobõleva

    Index Scriptorium Estoniae

    Bobõljova, Valeria, 1945-

    2003-01-01

    Moskvas Pushkini-nimelises Kujutava Kunsti Muuseumis oleva Henry Francois Viollier (1750-1829) miniatuurmaalist tundmatu autori poolt maalitud koopia atributsioon. Autor jõuab järeldusele, et maalil on Natalja Ivanovna Gontsharova asemel kujutatud Euphrosine Ulrika von Liphart-Posset

  20. How Bob Barker Would (Probably) Teach Discrete Mathematics

    Science.gov (United States)

    Urness, Timothy

    2010-01-01

    This article proposes a discrete mathematics course in which games from "The Price Is Right" are used to engage students in a deeper, practical study of discrete mathematics. The games themselves are not the focus of the course; rather, the mathematical principles of the games give motivation for the concepts being taught. The game examples are…

  1. CERN Technology on Display in Nice

    CERN Multimedia

    2000-01-01

    Bob Dobinson (center) and Brian Martin (right) presenting technology transfer from CERN to indus exhibition in Nice. Nice in November was the scene of the EU sponsored Information Science Technologies, IST2000 exhibition, where CERN was invited to present a stand focussing on the benefits to small companies and start-ups from association with CERN and the IST program. Companies from France, Israel and the UK were featured. Network technology standards that CERN has helped to develop have been adopted by the European Space Agency for use in future space vehicles, and these too were on show. The challenges of data acquisition and data handling for the LHC are not insurmountable, but need to be approached with a combination of advanced technology and close industrial collaboration. One important aspect is that of high speed networking, an important component in both on-line and off-line computing (GRIDs). Real time data acquisition systems for the LHC require networks with high throughput, low latency, high rel...

  2. Bob and Jane go to Argentina: The Ethics of Cross-Border Care

    Directory of Open Access Journals (Sweden)

    Williams-Jones, Bryn

    2012-03-01

    Full Text Available This case study presents the story of a typical North American couple searching for fertility treatments on the Internet. This search leads to sites of clinics in other countries, which gets them thinking about traveling abroad for medical services – also known as medical tourism.

  3. BOB.1 of the channel catfish, Ictalurus punctatus: Not a transcriptional coactivator?

    OpenAIRE

    Richard, Mara L. Lennard; Hikima, Jun-ichi; Wilson, Melanie R.; Miller, Norman W.; Cunningham, Charles; Warr, Gregory W.

    2008-01-01

    Expression of the immunoglobulin heavy chain (IGH) locus of the channel catfish (Ictalurus punctatus)is driven by the Eμ3′ enhancer, whose core region contains two octamer motifs and a μE5 site. Orthologues of the Oct1 and Oct2 transcription factors have been cloned in the channel catfish and shown to bind to the octamer motifs within the core enhancer. While catfish Oct2 is an activator of transcription, catfish Oct1 failed to drive transcription and may act as a negative regulator of IGH tr...

  4. Like Alligators Bobbing for Poodles? A Critical Discussion of Education, ADHD and the Biopsychosocial Perspective

    Science.gov (United States)

    Cooper, Paul

    2008-01-01

    ADHD (Attention Deficit/Hyperactivity Disorder) continues to be a controversial issue among some educationalists. This paper argues that negativity towards the ADHD concept shown by some antagonists is based on outdated thinking and a lack of understanding of the diagnosis and the biopsychosocial paradigm through which it can be usefully…

  5. On Using Knowledge about Our Brain: A Conversation with Bob Sylwester.

    Science.gov (United States)

    Brandt, Ron

    1997-01-01

    Today, researchers can learn about blood flow, electromagnetic fields, and chemical composition of the brain by using functional MRI (magnetic resonance imaging). As biologists, medical researchers, and cognitive scientists learn more about brain functions, educators must keep informed, study, and apply what they have learned in the classroom.…

  6. ADVENTURES OF THE MIND (WIT AND WISDOM WITH BOB)--DEATH%心路历程--逝

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    @@ We are what survives of us. Dear Friends, My past columns have concerned various aspects of life. This is because life is common to all of us. Life is what we experience every minute of every day. It may be hard for some to accept, but there is something else that we all share in common regardless(不管,不顾) of where we live or what we believe. Each of us is perishable(容易腐烂的). Our lives will terminate(停止,终结) in dying.

  7. Barack Obama Blindness (BOB): Absence of Visual Awareness to a Single Object

    OpenAIRE

    Persuh, Marjan; Melara, Robert D.

    2016-01-01

    In two experiments, we evaluated whether a perceiver’s prior expectations could alone obliterate his or her awareness of a salient visual stimulus. To establish expectancy, observers first made a demanding visual discrimination on each of three baseline trials. Then, on a fourth, critical trial, a single, salient and highly visible object appeared in full view at the center of the visual field and in the absence of any competing visual input. Surprisingly, fully half of the participants were ...

  8. Quantum key distribution series network protocol with M-classical Bobs

    Institute of Scientific and Technical Information of China (English)

    Zhang Xian-Zhou; Gong Wei-Gui; Tan Yong-Gang; Ren Zhen-Zhong; Guo Xiao-Tian

    2009-01-01

    Secure key distribution among classical parties is impossible both between two parties and in a network. In this paper, we present a quantum key distribution (QKD) protocol to distribute secure key bits among one quantum party and numerous classical parties who have no quantum capacity. We prove that our protocol is completely robust, i.e.,any eavesdropping attack should be detected with nonzero probability. Our calculations show that our protocol may be secure against Eve's symmetrically individual attack.

  9. Ööklubi BonBon = BobBon nightclub / Ville Lausmäe

    Index Scriptorium Estoniae

    Lausmäe, Ville, 1981-

    2013-01-01

    Ööklubi BonBon (Tallinn, Mere pst. 6E) sisekujundusest. Sisearhitektid Peeter Klaas ja Ville Lausmäe (sisearhitektuuribüroo VLS). Sisearhitekti ja ESLi aastapreemiate žürii liikme Tarmo Piirmetsa arvamus

  10. Sensitive detection of fast, neutral hydrogen atoms for the Bound Beta-Decay (BoB) experiment

    International Nuclear Information System (INIS)

    We are currently exploring methods to detect hydrogen atoms with 325.7 eV kinetic energy. These atoms form the decay signature of the theoretically-predicted three-body decay of the neutron into a hydrogen atom and an anti-neutrino. The challenge in designing and building such a hydrogen detector lies in the small predicted branching ratio for this decay (10-6 of the three-body decay), the low energy of the atoms and the requirement to identify them over background hydrogen. This talk describes our preliminary work investigating three possible detection schemes: quenching of H(2s) atoms and subsequent detection of the resulting Lyman-α photon, charge-exchange of hydrogen atoms in argon gas and laser ionisation.

  11. Adventures of the Mind Wit and Wisdom with Bob Marriage%心路历程--婚姻

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Dear Friends, "Marriage" is one of the most complexarrangements that exists in the modern world. It iscommon everywhere. It differs from country to country.Within each country it takes different forms. No twomarriages are exactly alike. Some marriages are theresult of romantic courtships. Other marriages arearranged by parents. Still others are set by tradition orconvenience. Most marriages are between a male and afemale,a husband and a wife. Recently,some marriagesare being sanctioned between two persons of the samegender. These are referred to as "same sex marriages".Insome societies,a man is allowed to be wed to more thanone woman at the same time. This is called"polygamy".

  12. FERC's pilot project to eliminate the price cap on capacity release: a walk with Bob through 'This Old House'

    International Nuclear Information System (INIS)

    The Federal Energy Regulatory Commission's (FERC) recent attempt to remove the price cap on secondary market products, including released capacity, was described. Unfortunately, lifting the cap was conditional on sound market power analysis and joint filing with an open access local distribution company (LDC). There were few applications, and all but two have been rejected. The two companies whose applications were approved, subsequently decided not to proceed with the project, claiming that the diminished scope of the experiment would prevent the gathering of meaningful data. This author argued that a perfect market power analysis is not necessary; the natural gas market being a secondary market, lifting the price cap at the retail level would provide very good indication of the value of the capacity in the marketplace. From the pipeline's perspective the ultimate goal is to establish market benchmarks to value mainline capacity; this should be the goal of FERC, as well. A variety of arguments in favour of this view were presented; these were supported by illustrative examples based on Canadian experience

  13. 心路历程--关于爱情%ADVENTURES OF THE MIND (WIT AND WISDOM WTTH BOB)-Love

    Institute of Scientific and Technical Information of China (English)

    Robert S.Herman

    2003-01-01

    @@ Dear Friends, I recently learned that February 14th is celebrated in China as qing ren jie. In America we call this Valentine's Day and dedicate it to romantic love. Because of this I have been asked to devote this month's column to Love. This is a very complicated subject, and not easy to write about. There are no experts. Terms are ambiguous, and there are wide cultural differences in our approach to the subject of Love.

  14. Rethinking Sponge Bob and Ninja Turtles: Popular Culture as Funds of Knowledge for Curriculum Co-Construction

    Science.gov (United States)

    Hedges, Helen

    2011-01-01

    Children's interest in popular culture was clear in my study of interests-based curriculum. Yet, perhaps unsurprisingly, it was a contentious site of curriculum co-construction. This article explores this tension. It argues that interpreting popular culture as "funds of knowledge" might assist teachers to consider a different view of this interest…

  15. Management of Barrett esophagus: a practical guide for clinicians based on the BADCAT and BoB CAT recommendations.

    Science.gov (United States)

    Jankowski, Jakob; Bennett, Cathy; Jankowski, Janusz A

    2015-01-01

    We undertook two of the largest evidence-based reviews in clinical medicine to assess the rationale for the management of gastroesophageal reflux disease, Barrett esophagus (BE), dysplasia, and early invasive esophageal adenocarcinoma. These reviews involved over 150 world experts in 4 continents, and over 20 000 papers were assessed. Quality assessment of the publications was made using Grading of Recommendations Assessment, Development and Evaluation, and of over 240 questions formulated, we were able to answer 30% with an agreement of at least 80%. We agreed on a unique global definition of BE meaning that the presence both of hiatus hernia endoscopically and of intestinal metaplasia histologically should be noted. In addition, we devised an escalation and deescalation pathway for the management of esophagitis, metaplasia, dysplasia, and adenocarcinoma sequence. Endoscopic resection (ER) is recommended for visible mucosal lesions. Moreover, we endorsed the early use of ablation therapy for persistent dysplasia of any degree. In this regard, ER may be both diagnostic and therapeutic and may be sufficient even in early mucosal lesions (T1m). In conclusion, fewer people should be surveyed but those that do will require more detailed mapping and endoscopic interventions than currently. In addition, patients accumulating other potentially life-threaten-ing comorbidities should be offered cessation of surveillance. In the future, chemoprevention may be the game-changing solution but results from large randomized trials, including AspECT and BOSS, are awaited. PMID:26397112

  16. BoB: Best of Both in Compiler Construction Bottom-up Parsing with Top-down Semantic Evaluation

    Directory of Open Access Journals (Sweden)

    Wolfgang Dichler

    Full Text Available Compilers typically use either a top-down or a bottom-up strategy for parsing as well as semantic evaluation. Both strategies have advantages and disadvantages: bottom-up parsing supports LR(k grammars but is limited to S- or LR-attribution while top-dow ...

  17. Versatility of continuous-variable asymmetric tripartite entanglement allows Alice and Clare to keep secrets from Bob

    Science.gov (United States)

    Olsen, M. K.; Cavalcanti, E. G.

    2016-07-01

    The fully symmetric Gaussian tripartite entangled pure states will not exhibit two-mode Einstein-Podolsky-Rosen (EPR) steering. This means that any two participants cannot share quantum secrets using the security of one-sided device independent quantum key distribution (1SDI-QKD) without involving the third. They are restricted at most to standard quantum key distribution, which is less secure. Here we demonstrate an asymmetric tripartite system that can exhibit bipartite EPR steering, so that two of the participants can use 1SDI-QKD without involving the other. This is possible because the promiscuity relations of continuous-variable tripartite entanglement are different from those of discrete-variable systems. We analyze these properties for two different systems, showing that the asymmetric system exhibits practical properties not found in the symmetric one.

  18. ADVENTURES OF THE MIND (WIT AND WISDOM WITH BOB)-Problem%心路历程-问题

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    @@ PROBLEMS ARE AS NECESSARY AS AIR Dear Friends, This column, the ninth in our series, deals with Problems. These should be familiar to all of us. Problems are important ingredients1 in our existence. If there were no problems,every day would end at the moment we awake in the morning. There would be no meal times, no work times, no leisure time2. Problems provide the stimulin3 that add substance and excitement to our lives.

  19. Seismic Imaging and Inversion: Application of Linear Theory (2012), Cambridge University Press, co-authored with Bob Stolt

    Energy Technology Data Exchange (ETDEWEB)

    Weglein, Arthur B.; Stolt, Bob H.

    2012-03-01

    Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.

  20. B fields in OB stars (BOB): The discovery of a magnetic field in a multiple system in the Trifid Nebula, one of the youngest star forming regions

    CERN Document Server

    Hubrig, S; Carroll, T A; Castro, N; Gonzalez, J F; Ilyin, I; Przybilla, N; Schoeller, M; Oskinova, L M; Morel, T; Langer, N; Scholz, R D; Kharchenko, N V; Nieva, M -F

    2014-01-01

    Recent magnetic field surveys in O- and B-type stars revealed that about 10% of the core-hydrogen-burning massive stars host large-scale magnetic fields. The physical origin of these fields is highly debated. To identify and model the physical processes responsible for the generation of magnetic fields in massive stars, it is important to establish whether magnetic massive stars are found in very young star-forming regions or whether they are formed in close interacting binary systems. In the framework of our ESO Large Program, we carried out low-resolution spectropolarimetric observations with FORS2 in 2013 April of the three most massive central stars in the Trifid nebula, HD164492A, HD164492C, and HD164492D. These observations indicated a strong longitudinal magnetic field of about 500-600G in the poorly studied component HD164492C. To confirm this detection, we used HARPS in spectropolarimetric mode on two consecutive nights in 2013 June. Our HARPS observations confirmed the longitudinal magnetic field in...

  1. Adventures in Fruit Fly Attractants – Multiple Phases of Bob Heath’s Research to Develop the Food-based Attractant for Tropical Tephritids

    Science.gov (United States)

    Research was initiated in 1991 to develop a dry trap with female-targeted synthetic attractant for tropical tephritids to replace glass McPhail traps and liquid protein baits that had been the standard for over thirty years. Both the male-produced pheromone and the liquid protein baits were to be e...

  2. 导电锂盐LiBOB各组分含量的测定%Determination of the component content of conductive lithium salt LiBOB

    Institute of Scientific and Technical Information of China (English)

    韩周祥; 魏剑英; 蔺常辉; 杨志宽

    2006-01-01

    通过各种C2O42-、Li+和B(Ⅲ)的分析方法的对比,提出了LiBOB中各组分含量的一种定量测定方法.K2Cr2O7法测定C2O42-含量、热处理后NaOH滴定法测定B(Ⅲ)含量和热处理后HCl滴定法测定Li+含量的相对误差分别为0.22%、0.54%和0.84%.测定结果准确,方法简单,易于操作,可作为测定LiBOB组分的常规方法.

  3. B fields in OB stars (BOB): Detection of a strong magnetic field in the O9.7 V star HD54879

    CERN Document Server

    Castro, N; Hubrig, S; Simón-Díaz, S; Schöller, M; Ilyin, I; Carrol, T A; Langer, N; Morel, T; Schneider, F R N; Przybilla, N; Herrero, A; de Koter, A; Oskinova, L M; Reisenegger, A; Sana, H

    2015-01-01

    The number of magnetic stars detected among massive stars is small; nevertheless, the role played by the magnetic field in stellar evolution cannot be disregarded. Links between line profile variability, enhancements/depletions of surface chemical abundances, and magnetic fields have been identified for low-mass B-stars, but for the O-type domain this is almost unexplored. Based on FORS2 and HARPS spectropolarimetric data, we present the first detection of a magnetic field in HD54879, a single slowly rotating O9.7 V star. Using two independent and different techniques we obtained the firm detection of a surface average longitudinal magnetic field with a maximum amplitude of about 600 G, in modulus. A quantitative spectroscopic analysis of the star with the stellar atmosphere code FASTWIND results in an effective temperature and a surface gravity of 33000$\\pm1000$ K and 4.0$\\pm0.1$ dex. The abundances of carbon, nitrogen, oxygen, silicon, and magnesium are found to be slightly lower than solar, but compatible ...

  4. B fields in OB stars (BOB): Detection of a magnetic field in the He-strong star CPD-57{\\deg} 3509

    CERN Document Server

    Przybilla, N; Hubrig, S; Nieva, M -F; Järvinen, S P; Castro, N; Schöller, M; Ilyin, I; Butler, K; Schneider, F R N; Oskinova, L M; Morel, T; Langer, N; de Koter, A

    2016-01-01

    We report the detection of a magnetic field in the helium-strong star CPD-57 3509 (B2 IV), a member of the Galactic open cluster NGC3293, and characterise the star's atmospheric and fundamental parameters. Spectropolarimetric observations with FORS2 and HARPSpol are analysed using two independent approaches to quantify the magnetic field strength. A high-S/N FLAMES/GIRAFFE spectrum is analysed using a hybrid non-LTE model atmosphere technique. Comparison with stellar evolution models constrains the fundamental parameters of the star. We obtain a firm detection of a surface averaged longitudinal magnetic field with a maximum amplitude of about 1 kG. Assuming a dipolar configuration of the magnetic field, this implies a dipolar field strength larger than 3.3 kG. Moreover, the large amplitude and fast variation (within about 1 day) of the longitudinal magnetic field implies that CPD-57 3509 is spinning very fast despite its apparently slow projected rotational velocity. The star should be able to support a centr...

  5. Clonal variation of DNA repair in a human glioma cell line This study was supported by the Cancer Research Campaign and the Bob Champion Cancer Trust

    International Nuclear Information System (INIS)

    Clonal heterogeneity in response to ionizing radiation was found for a human glioma cell line, IN859. The authors have investigated the most sensitive clone, the most resistant clone and the parent line for differences in DNA repair fidelity using the method of plasmid reconstitution. Significant differences in repair fidelity were found between the two clones, and between the sensitive clone and the parent line. The resistant clone and the parent lines showed the greater repair fidelity. A comparison of two different restriction enzymes, which cleave the plasmid with blunt or cohesive-ended double-strand breaks, did not reveal differences in repair fidelity. Equal numbers of plasmids were integrated in each cell line, but the sensitive clone showed a higher frequency of misrepair of cleaved plasmid. Misrepair was characterized by partial or complete loss of sequence at the site of plasmid cleavage. It is concluded that the radiosensitive clone exhibits increased misrepair. (author). 15 refs.; 5 figs.; 2 tabs

  6. BOB CAT: A Large-Scale Review and Delphi Consensus for Management of Barrett’s Esophagus With No Dysplasia, Indefinite for, or Low-Grade Dysplasia

    Science.gov (United States)

    Bennett, Cathy; Moayyedi, Paul; Corley, Douglas A.; DeCaestecker, John; Falck-Ytter, Yngve; Falk, Gary; Vakil, Nimish; Sanders, Scott; Vieth, Michael; Inadomi, John; Aldulaimi, David; Ho, Khek-Yu; Odze, Robert; Meltzer, Stephen J.; Quigley, Eamonn; Gittens, Stuart; Watson, Peter; Zaninotto, Giovanni; Iyer, Prasad G.; Alexandre, Leo; Ang, Yeng; Callaghan, James; Harrison, Rebecca; Singh, Rajvinder; Bhandari, Pradeep; Bisschops, Raf; Geramizadeh, Bita; Kaye, Philip; Krishnadath, Sheila; Fennerty, M. Brian; Manner, Hendrik; Nason, Katie S.; Pech, Oliver; Konda, Vani; Ragunath, Krish; Rahman, Imdadur; Romero, Yvonne; Sampliner, Richard; Siersema, Peter D.; Tack, Jan; Tham, Tony C.K.; Trudgill, Nigel; Weinberg, David S.; Wang, Jean; Wang, Kenneth; Wong, Jennie Y.Y.; Attwood, Stephen; Malfertheiner, Peter; MacDonald, David; Barr, Hugh; Ferguson, Mark K.; Jankowski, Janusz

    2015-01-01

    OBJECTIVES Barrett’s esophagus (BE) is a common premalignant lesion for which surveillance is recommended. This strategy is limited by considerable variations in clinical practice. We conducted an international, multidisciplinary, systematic search and evidence-based review of BE and provided consensus recommendations for clinical use in patients with nondysplastic, indefinite, and low-grade dysplasia (LGD). METHODS We defined the scope, proposed statements, and searched electronic databases, yielding 20,558 publications that were screened, selected online, and formed the evidence base. We used a Delphi consensus process, with an 80% agreement threshold, using GRADE (Grading of Recommendations Assessment, Development and Evaluation) to categorize the quality of evidence and strength of recommendations. RESULTS In total, 80% of respondents agreed with 55 of 127 statements in the final voting rounds. Population endoscopic screening is not recommended and screening should target only very high-risk cases of males aged over 60 years with chronic uncontrolled reflux. A new international definition of BE was agreed upon. For any degree of dysplasia, at least two specialist gastrointestinal (GI) pathologists are required. Risk factors for cancer include male gender, length of BE, and central obesity. Endoscopic resection should be used for visible, nodular areas. Surveillance is not recommended for Management strategies for indefinite dysplasia (IND) and LGD were identified, including a de-escalation strategy for lower-risk patients and escalation to intervention with follow-up for higher-risk patients. CONCLUSIONS In this uniquely large consensus process in gastroenterology, we made key clinical recommendations for the escalation/de-escalation of BE in clinical practice. We made strong recommendations for the prioritization of future research. PMID:25869390

  7. 我与中国有个约会--专访泰克亚太区销售及销售运营副总裁Bob Agnes%The interview of Tektronix's VP of Asia Pacific sales and sales operations ,Bob Agnes

    Institute of Scientific and Technical Information of China (English)

    孙俊杰

    2006-01-01

    @@ 自从泰克1983年进入中国,到今天已经有20多年的时间.在此期间,泰克的市场占有率持续上升.泰克逻辑分析仪在2004年占全球销售的50%以上,成为该产品的市场领导者;

  8. Epohhi looja jõuab Eestisse / Mari Hiiemäe

    Index Scriptorium Estoniae

    Hiiemäe, Mari

    2008-01-01

    Ameerika lauljast ja heliloojast Bob Dylanist (kontsert 4. juunil Tallinnas Saku Suurhallis). Kinos Sõprus esilinastuvast Bob Dylani elust ja muusikast inspireeritud mängufilmist "Kus on Bob Dylan?"

  9. Descartes da pesca do camarão sete-barbas como fonte de alimento para aves marinhas Sea-bob-shrimp fishery's by-catch as a feeding source for seabirds

    Directory of Open Access Journals (Sweden)

    Joaquim Olinto Branco

    2001-03-01

    Full Text Available From July 1996 to June 1997, in Armação do Itapocoroy, Penha, Santa Catarina State, Brazil, monthly census were done in three areas of traditional fishery and Itacolomis islands. A total of 10021 seabirds were registered, belonging to eight species, five genus and four families. The average number of seabirds per dragging varied between 80,2 and 113,6. Sterna spp, appeared at first in 43,3% of the released by-catch, followed by Larus dominicanus Lichtenstein, 1823, Fregata magnificens Matheus, 1914, Phalacrocorax brasilianus (Humboldt, 1805 and Sula leucogaster Boddaert, 1783. The average size of the fish consumed by the seabirds oscillated from 8,3 cm (Sterna spp. to 18,5 cm (F. magnificens, with an average time from 6,12 to 7,55 minutes per by-catch released. In general, seabirds use 84,0% of the by-catch fish as a feeding source.

  10. Maintain a Heart Healthy Lifestyle

    Medline Plus

    Full Text Available ... BOB WELTNER: My heart stopped and in theory, I guess I was dead. But through the miracles of medical ... happening. BOB WELTNER: The type of exercise that I do now is I have a stationary bike ...

  11. Maintain a Heart Healthy Lifestyle

    Medline Plus

    Full Text Available ... and cholesterol, control their weight and get regular physical activity. BOB WELTNER: My heart stopped and in theory, ... attack from happening. BOB WELTNER: The type of exercise that I do now is I have a ...

  12. Improvement in Space Food Packaging Methods Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The Space Food Systems Laboratory's (SFSL) current Bulk Overwrap Bag (BOB) package, while simple and effective, leaves room for improvement. Currently, BOBs are...

  13. A Bidirectional Teleportation Protocol for Arbitrary Two-qubit State Under the Supervision of a Third Party

    Science.gov (United States)

    Choudhury, Binayak S.; Dhara, Arpan

    2016-04-01

    In this paper we introduce a controlled teleportation protocol for transferring arbitrary two-qubit states bilaterally between Alice and Bob. The bidirectional teleportation protocol is supervised by a controller Charlie. A ten-qubit entangled quantum channel shared between Alice, Bob and Charlie is utilized. The protocol depends on Bell state measurements by Alice and Bob and single-qubit measurements by Charlie.

  14. Public-Key Encryption with Delegated Search

    NARCIS (Netherlands)

    Ibraimi, Luan; Nikova, Svetla; Hartel, Pieter; Jonker, Willem

    2011-01-01

    In public-key setting, Alice encrypts email with public key of Bob, so that only Bob will be able to learn contents of email. Consider scenario when computer of Alice is infected and unbeknown to Alice it also embeds malware into message. Bob's company, Carol, cannot scan his email for mali

  15. Unconditional security proof of a deterministic quantum key distribution with a two-way quantum channel

    CERN Document Server

    Lu, Hua; Ma, Xiongfeng; Cai, Qing-yu; 10.1103/PhysRevA.84.042344

    2011-01-01

    In a deterministic quantum key distribution (DQKD) protocol with a two-way quantum channel, Bob sends a qubit to Alice who then encodes a key bit onto the qubit and sends it back to Bob. After measuring the returned qubit, Bob can obtain Alice's key bit immediately, without basis reconciliation. Since an eavesdropper may attack the qubits traveling on either the Bob-Alice channel or the Alice-Bob channel, the security analysis of DQKD with a two-way quantum channel is complicated and its unconditional security has been controversial. This paper presents a security proof of a single-photon four-state DQKD against general attacks.

  16. Quantum Information Splitting of Arbitrary Three-qubit State by Using Five-qubit Cluster state and GHZ-state

    Science.gov (United States)

    Yin, Aihan; Wang, Jiwei

    2016-09-01

    In this paper, a new scheme of quantum information splitting (8QIS) by using five-qubit state and GHZ-state as quantum channel is proposed. The sender Alice performs Bell-state measurements (BSMs) on her qubit-pairs respectively,then tells her measurement result to the receivers Bob. If Bob wants to reconstruct the original states, he must cooperates with the controller Charlie, that Charlie performs two single particle measurement on his qubits and tells Bob the results. According to Alice's and Bob's results, Bob can reconstruct the initial state by applying appropriate unitary operation.

  17. Zero knowledge convincing protocol on quantum bit is impossible

    OpenAIRE

    Horodecki, Pawel; Horodecki, Michal; Horodecki, Ryszard

    2000-01-01

    Consider two parties: Alice and Bob and suppose that Bob is given a qubit system in a quantum state $\\phi$, unknown to him. Alice knows $\\phi$ and she is supposed to convince Bob that she knows $\\phi$ sending some test message. Is it possible for her to convince Bob providing him "zero knowledge" i. e. no information about $\\phi$ he has? We prove that there is no "zero knowledge" protocol of that kind. In fact it turns out that basing on Alice message, Bob (or third party - Eve - who can inte...

  18. CPK鉴别协议(v1.0)

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ 在CPK体制中,实体标识AliceID和BobID的公钥是标识映射到参教以T={a,b,G,P,n}定义的椭圆曲线E:y2=x3+ax+b(modp)上的点ALICE和BOB,任何人都可以计算,如果整数alice和bob分别满足ALICE=(alice)G,BOB=(bob)G,那么alice和bob是私钥,私钥由密钥管理中心(KMC)生成,并记入ID-card.

  19. Effect of curcumin derivative B06 Bob on synthesis of testosterone from type 2 diabetic rats%姜黄素衍生物 B06对2型糖尿病大鼠睾酮合成的影响

    Institute of Scientific and Technical Information of China (English)

    林中民; 王芳; 张泉波; 陈霖; 陈三妹; 陈国荣

    2016-01-01

    AIM:To investigate the effect of curcumin derivatives B06(B06) on the synthesis of testosterone from type 2 diabetic rats.METHODS: Male Sprague-Dawley rats were evenly divided into 5 groups randomly: normal control group (C group), high fat group (H group), high fat treatment group (HT group), diabetes mellitus group (D group) and diabetes treatment group ( DT group) .The rats in the later 4 groups were fed with high fat diet, after 4 weeks of high fat diet feeding, the rats from D group and DT group were injected with low dose of streptozotocin intraperitoneally to induce diabetes mellitus, while the rats in HT group and DT group were gavaged with B06 at the dose of 0.2 mg· kg-1 · d-1 for 8 weeks.The blood glucose was detected by glucometer, blood insulin was assayed by ELISA and the insulin resist-ance index was calculated.The morphology of testes were observed by light and transmission electron microscopy.Serum testosterone and estradiol were measured by radioimmunoassay.The protein expression of steroidogenic acute regulatory pro-tein ( StAR) was detected by immunohistochemistry.The mRNA expression of StAR, cholesterol side-chain cleavage en-zyme (P450scc), cytochrome P450 17A1 (P450c17), cytochrome P450 aromatizing enzyme (P450arom), 3β-hydroxyste-roid dehydrogenase ( HSD) and 17β-HSD was detected by RT-PCR.RESULTS:The levels of blood glucose and insulin resistance index were increased in H group and D group, and serum testosterone was decreased, all of which were reversed after the treatment of B06.Testicular seminiferous tubule was distorted, spermatogenic cells were dropped in H group and D group.In addition, leydig cells were found to have swelling mitochondria in H group and D group, endoplasmic reticu-lum was reduced, and there was karyopyknosis accompany with sparse chromatin, all of which were ameliorated by B06. The protein expression of StAR was decreased in D group.The mRNA expression of StAR and P450scc was decreased in H group and D group, all of which were increased in B06 treatment group.There was no significant difference in the mRNA expression of P450c17, P450arom, 3β-HSD and 17β-HSD.CONCLUSION: B06 may increase serum testosterone and relieve the damage of testes from type 2 diabetic rats.B06 improves metabolic disorder by up-regulating mRNA expression of StAR and P450scc.%目的:研究姜黄素衍生物B06对2型糖尿病大鼠睾酮合成的影响。方法:雄性SD大鼠35只,随机均分为正常对照组(C组)、高脂组(H组)、高脂治疗组(HT组)、糖尿病组(D组)和糖尿病治疗组(DT组),后4组高脂喂养4周后,D组及DT组用低剂量链脲佐菌素诱导糖尿病,HT组和DT组用0.2 mg· kg-1· d-1的B06灌胃8周。微量血糖仪测定大鼠血糖浓度;ELISA法测定血胰岛素水平,并计算胰岛素抵抗指数;光镜和电镜观察睾丸形态;放射免疫法测定血睾酮、雌二醇水平;免疫组化检测Leydig细胞的类固醇激素合成急性调节蛋白( StAR)表达;RT-PCR检测睾丸Leydig细胞StAR、胆固醇侧链裂解酶(P450scc)、细胞色素P45017A1(P450c17)、细胞色素P450芳香化酶( P450arom)、3β-羟基类固醇脱氢酶( HSD)及17β-HSD的mRNA表达水平。结果: H组及D组血糖、胰岛素抵抗指数升高,血清睾酮水平降低,经B06治疗后好转;H组及D组睾丸曲细精管变形,生精细胞脱落, Leydig细胞内线粒体肿胀,内质网减少且扩张,胞核皱缩,染色质稀疏,经B06治疗后病变减轻;D组的StAR蛋白表达减弱,经B06治疗后表达增强;H组及D组Leydig细胞StAR、P450scc mRNA表达降低,经B06治疗后升高, P450c17、P450arom、3β-HSD及17β-HSD mRNA表达未见明显差异。结论: B06可缓解2型糖尿病大鼠睾丸病变,提高血清睾酮水平,这可能与B06改善机体代谢紊乱并上调Leydig细胞StAR及P450scc mRNA表达水平相关。

  20. Explaining the mechanism of the quantum speed-up in time-symmetric quantum mechanics

    CERN Document Server

    Castagnoli, Giuseppe

    2011-01-01

    Bob chooses a function and gives to Alice the black box that computes it. Alice, without knowing Bob's choice, should find a character of the function (e. g. its period) by computing its value for different arguments. There is naturally correlation between Bob's choice and the solution found by Alice. We show that, in quantum algorithms, this correlation becomes quantum. This highlights an overlooked quantum measurement problem: sharing between two completely or partly redundant measurements the determination of two completely or partly correlated measurement outcomes. Under a reasonable sharing criteria, all is like Alice, by reading the solution at the end of the algorithm, contributed to the determination of the initial choice of Bob. This contribution, back evolved to before running the algorithm where Bob's choice is located, becomes Alice knowing in advance half of the choice. The quantum algorithm is the quantum superposition of all the possible ways of taking half of Bob's choice and, given the advanc...

  1. Gaussian quantum steering and its asymmetry in curved spacetime

    CERN Document Server

    Wang, Jieci; Jing, Jiliang; Fan, Heng

    2015-01-01

    We study Gaussian quantum steering and its asymmetry in the background of a Schwarzschild black hole. We present a Gaussian channel description of quantum state evolution under the influence of Hawking radiation. We find that thermal noise introduced by Hawking effect will destroy the steerability between an inertial observer Alice and an accelerated observer Bob who hovers outside an event horizon, while it generates steerability between Bob and a hypothetical observer Anti-Bob inside the event horizon. Besides, unlike entanglement behaviors in curved spacetime, here the steering from Alice to Bob suffers from a ``sudden death" and the steering from Anti-Bob to Bob appears a ``sudden birth" with the increasing of Hawking temperature. We also find that the Gaussian steering is always asymmetric and the maximum steering asymmetry can \\emph{ exceed} $\\ln 2$ in curved spacetime, which is quite different from the flat spacetime case [Phys. Rev. Lett. 114, 060403 (2015)] where the steering asymmetry can \\emph{neve...

  2. Robert Gilmore, a portrait

    Science.gov (United States)

    Solari, Hernán G.

    2013-01-01

    To present the personality of Bob Gilmore is a formidable task, as his scientific contributions include group theory, laser physics, non-linear dynamics, catastrophe theory, thermodynamics, dynamical systems, quantum theory and more. But even if we succeed in describing his contributions, much of Gilmore's being would be lost. Bob as advisor, Bob as father, Bob as teacher, Bob as scientific communicator reveal as much of Bob Gilmore as his scientific papers and his books. Very much as in the Group Theory so close to him, there is a Robert Gilmore in abstract as well as representations of Robert Gilmore. We will make an attempt to find the "principle of the rule", the abstract level of Robert Gilmore as well as Robert Gilmore, himself, as a representation of the duality science-humanism.

  3. Experimental realization of the quantum duel game using linear optical circuits

    Science.gov (United States)

    Balthazar, W. F.; Passos, M. H. M.; Schmidt, A. G. M.; Caetano, D. P.; Huguenin, J. A. O.

    2015-08-01

    We report on the experimental realization of the quantum duel game for two players, Alice and Bob. Using an all optical approach, we have encoded Alice and Bob states in transverse modes and polarization degrees of freedom of a laser beam, respectively. By setting Alice and Bob input states and considering the possibility of Alice performing two shots, we demonstrated the quantum features of the game as well as we recovered the classical version of the game.

  4. Universally Composable Multiparty Computation with Partially Isolated Parties

    DEFF Research Database (Denmark)

    Damgård, Ivan Bjerre; Nielsen, Jesper Buus; Wichs, Daniel

    2009-01-01

    assume that a player (Alice) can partially isolate another player (Bob) for a brief portion of the computation and prevent Bob from communicating more than some limited number of bits with the environment. For example, isolation might be achieved by asking Bob to put his functionality on a tamper...... by all of the players. This compromise allows us to significantly limit the use of the physical set-up and hence might be preferred in practice....

  5. Two Ways of Robust Quantum Dialogue by Using Four-Qubit Cluster State

    Science.gov (United States)

    Wang, Rui-jin; Li, Dong-fen; Liu, Yao; Qin, Zhi-guang; Baagyere, Edward

    2016-04-01

    In this paper, we present a scheme for quantum dialogue by using a four-qubit cluster state as quantum channel.The scheme has two cases: Case 1, Sender Alice and receiver Bob share information using an orderly sequence of entangled state as quantum channel which was prepared by Alice. This case is achieved as follows: The two sides agreed to encode quantum state information, then Alice perform a bell state measurement for quantum information which has been encoded. This will convey the information to Bob, then Bob measuring his own qubits, through the analysis of the measurement results of Alice and Bob, Bob can obtain quantum information. For case 2, four-qubit cluster state and quantum state information is transmitted to form a total quantum system. In the Case 2 scenario, Alice and Bob perform bell state measurements for part of the qubits, and tell the measurement result to each other through the classical channel. Finally, according to the measurement result, Alice and Bob operate an appropriate unitary transformation, as a result, Alice's qubit will be renewed upon Bob's measurements, and also, Bob's qubit will be renewed upon Alice's measurements. Thus, a bidirectional quantum dialogue is achieved. After analysis, this scheme has high security by taking certain eavesdropping attacks into account. There is therefore a certain reference value to the realization of quantum dialogue.

  6. Vernal Pool Distribution - Central Valley, 2005 [ds650

    Data.gov (United States)

    California Department of Resources — "Great Valley Vernal Pool Distribution", originally mapped by Bob Holland, 2005. This dataset contains vernal pool areas mapped over Califorina's Central Valley,...

  7. Quantum computation: Honesty test

    Science.gov (United States)

    Morimae, Tomoyuki

    2013-11-01

    Alice does not have a quantum computer so she delegates a computation to Bob, who does own one. But how can Alice check whether the computation that Bob performs for her is correct? An experiment with photonic qubits demonstrates such a verification protocol.

  8. The "Rae Review:" A Critique

    Science.gov (United States)

    Barrett, Ralph V.; Doughty, Howard A.

    2005-01-01

    The subject of this article is the report, "Ontario: A Leader in Learning" (Rae, 2005), presented to the government of Ontario by its principal author and key public face of the document, Bob Rae. The presentation is divided into four main parts: (1) the authors attempt to summarize the political philosophy of Bob Rae, the former Member of…

  9. Asymmetric Bidirectional Controlled Teleportation by Using Six-qubit Cluster State

    Science.gov (United States)

    Li, Yuan-hua; Nie, Li-ping; Li, Xiao-lan; Sang, Ming-huang

    2016-06-01

    We propose a scheme for asymmetric bidirectional controlled teleportation by using a six-qubit cluster state as quantum channel. In our scheme, Alice can transmit an arbitrary two-qubit entangled state to Bob and at the same time Bob can teleport an arbitrary single-qubit state to Alice under the control of the supervisor Charlie.

  10. Bidirectional Quantum Controlled Teleportation by using a Seven-qubit Entangled State

    Science.gov (United States)

    Sang, Ming-huang

    2016-01-01

    We propose a new protocol of bidirectional quantum controlled teleportation by using a seven-qubit entangled state as the quantum channel. That is to say Alice may transmit an arbitrary single-qubit state to Bob and Bob may transmit an arbitrary two-qubit state to Alice via the control of the supervisor Charlie.

  11. Bidirectional Quantum Teleportation by Using Five-qubit Cluster State

    Science.gov (United States)

    Sang, Ming-huang

    2016-03-01

    We propose a scheme for bidirectional quantum teleportation by using a five-qubit cluster state. In our scheme, Alice can transmit an arbitrary two-qubit entangled state to Bob and at the same time Bob can teleport an arbitrary single-qubit state to Alice.

  12. Blind Quantum Computation

    DEFF Research Database (Denmark)

    Salvail, Louis; Arrighi, Pablo

    2006-01-01

    We investigate the possibility of "having someone carry out the work of executing a function for you, but without letting him learn anything about your input". Say Alice wants Bob to compute some known function f upon her input x, but wants to prevent Bob from learning anything about x. The situa...

  13. A seismotectonic study of the 21 May 2014 Bay of Bengal intraplate earthquake: Evidence of onshore-offshore tectonic linkage and fracture zone reactivation in the northern Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, G.S.; Radhakrishna, M.; Murthy, K.S.R.

    of motion on a NW-oriented nodal plane, and it occurred on one of the NW-SE-trending fracture zones previously mapped in the BOB. Based on a compilation of long-term (1900–2011) intraplate earthquakes along with available focal mechanisms in the BOB...

  14. Protocol for direct counterfactual quantum communication

    OpenAIRE

    Salih, Hatim; Li, Zheng-Hong; Al-Amri, M; Zubairy, M. Suhail

    2012-01-01

    It has long been assumed in physics that for information to travel between two parties in empty space, "Alice" and "Bob", physical particles have to travel between them. Here, using the "chained" quantum Zeno effect, we show how, in the ideal asymptotic limit, information can be transferred between Alice and Bob without any physical particles traveling between them.

  15. Quantum key distribution by swapping the entanglement of {chi}-type state

    Energy Technology Data Exchange (ETDEWEB)

    Gao Gan, E-mail: gaogan0556@163.co [Department of Electrical Engineering, Tongling University, Tongling 244000 (China)

    2010-06-01

    We propose a quantum key distribution protocol using entanglement swapping of {chi}-type state; in this protocol, Alice and Bob transmit a particle sequence to each other and perform {chi}-type state measurements. Alice's and Bob's roles are completely symmetric.

  16. Performance on the Brink

    Science.gov (United States)

    Cassidy, Michael; Medsker, Karen

    2006-01-01

    Bob Knight, Head Men's Basketball Coach at Texas Tech, has set a new record for the most career wins (880) in college basketball history. As Indiana University graduates (Knight coached at Indiana for 21 years), and occasional college basketball fans, the authors consider what can be learned from Bob Knight, a complex and controversial figure. The…

  17. Entanglement-assisted guessing of complementary measurement outcomes

    NARCIS (Netherlands)

    Berta, M.; Coles, P.J.; Wehner, S.D.C.

    2014-01-01

    Heisenberg's uncertainty principle implies that if one party (Alice) prepares a system and randomly measures one of two incompatible observables, then another party (Bob) cannot perfectly predict the measurement outcomes. This implication assumes that Bob does not possess an additional system that i

  18. Teaching a Child with Autism and Severe Language Delays to Reject: Direct and Indirect Effects of Functional Communication Training

    Science.gov (United States)

    Martin, Christian A.; Drasgow, Erik; Halle, James W.; Brucker, Jennifer M.

    2005-01-01

    We used functional communication training to teach Bob, a 10-year-old student with autism and severe language delays, to reject items by touching an icon. Our initial assessment revealed that Bob's behaviours serving a rejecting function consisted of pushing away, yelling, bear hugging-grabbing, and leaving. We used prompting, differential…

  19. A secure additive protocol for card players

    CERN Document Server

    Cordon-Franco, Andres; Fernandez-Duque, David; Joosten, Joost J; Soler-Toscano, Fernando

    2011-01-01

    Consider three players Alice, Bob and Cath who hold a, b and c cards, respectively, from a deck of d=a+b+c cards. The cards are all different and players only know their own cards. Suppose Alice and Bob wish to communicate their cards to each other without Cath learning whether Alice or Bob holds a specific card. Considering the cards as consecutive natural numbers 0,1,..., we investigate general conditions for when Alice or Bob can safely announce the sum of the cards they hold modulo an appropriately chosen integer. We demonstrate that this holds whenever a,b>2 and c=1. Because Cath holds a single card, this also implies that Alice and Bob will learn the card deal from the other player's announcement.

  20. A Doubly Exponentially Crumbled Cake

    CERN Document Server

    Christ, Tobias; Gebauer, Heidi; Matoušek, Jiří; Uno, Takeaki

    2011-01-01

    We consider the following cake cutting game: Alice chooses a set P of n points in the square (cake) [0,1]^2, where (0,0) is in P; Bob cuts out n axis-parallel rectangles with disjoint interiors, each of them having a point of P as the lower left corner; Alice keeps the rest. It has been conjectured that Bob can always secure at least half of the cake. This remains unsettled, and it is not even known whether Bob can get any positive fraction independent of n. We prove that if Alice can force Bob's share to tend to zero, then she must use very many points; namely, to prevent Bob from gaining more than 1/r of the cake, she needs at least 2^{2^{\\Omega(r)}} points.

  1. A Method for Transferring an Unknown Quantum State and Its Application

    Institute of Scientific and Technical Information of China (English)

    YAN Feng-Li; HUO Hai-Rui

    2007-01-01

    We suggest a method for transferring an unknown quantum state.In this method the sender Alice first applies a controlled-not operation on the particle in the unknown quantum state and an ancillary particle which she wants to send to the receiver Bob.Then she sends the ancillary particle to Bob.When Alice is informed by Bob that the ancillary particle is received,she performs a local measurement on her particle and sends Bob the outcome of the local measurement via a classical channel.Depending on the outcome Bob can restore the unknown quantum state,which Alice destroyed,on the ancillary particle successfully.As an application of this method we propose a quantum secure direct communication protocol.By introducing the decoy qubits the security of the scheme is guaranteed.

  2. Tri(ethylene glycol)-substituted trimethylsilane/lithium bis(oxalate)borate electrolyte for LiMn2O4/graphite system

    Science.gov (United States)

    Kusachi, Yuki; Dong, Jian; Zhang, Zhengcheng; Amine, Khalil

    2011-10-01

    Silane-based electrolyte is a promising candidate for safer electrochemical energy storage devices because it is thermally and electrochemical stable, less flammable and environmental benign. In this paper, electrochemical properties of one of the silane-based electrolytes, tri(ethylene glycol)-substituted trimethylsilane (1NM3)-lithium bis(oxalate)borate (LiBOB) was studied using LiMn2O4 as cathode and MAG graphite as anode. When combined with LiBOB as lithium salt, the 1NM3-LiBOB electrolyte can provide solid electrolyte interface (SEI) formation due to the reductive decomposition of LiBOB at first charging cycle. Compared to the electrolyte used in the conventional lithium-ion batteries, 1NM3-LiBOB electrolyte showed compatible battery performance in LiMn2O4/MAG chemistry. The AC impedance measurement indicates that the activation energy (Ea) obtained from the charge transfer impedance for 1NM3-LiBOB was higher than that of the state-of-the-art electrolyte. Due to its low conductivity, the rate capability of 1NM3-LiBOB electrolyte needs to be improved.

  3. Studies on the thermal decomposition kinetics of LiPF6 and LiBC4O8

    Indian Academy of Sciences (India)

    Li Shi-You; Ma Pei-Hua; Cui Xiao-Ling; Ren Qi-Du; Li Fa-Qiang

    2008-03-01

    Thermal decomposition of LiPF6 and LiBC4O8 (lithium bis(oxalate)borate, abbreviated as LiBOB) were studied using TG (thermogravimetry)-DTG (derivative thermogravimetry) method with different heating rate of 5, 10, 20 and 40°C min-1 or at different constant temperature C (109.80, 118.79, 148.41, 176.86 °C for LiPF6 and 278.51, 298.13, 317.65, 336.13 for LiBOB). From the nonisothermal kinetics we calculate that LiPF6 is 1.01, LiBOB is 1.04, LiPF6 is 91907.61 J/mol, and LiBOB is 205179.88 J/mol; from the isothermal kinetics we calculate that n for both LiPF6 and LiBOB are 1, LiPF6 is 91907.61 J/mol, LiBOB is 205179.88 J/mol, lnALiPF6 is 16.89 s-1, and lnALiBOB is 31.96 s-1. The results obtained from the two ways have minor differences and can validate each other.

  4. Influence of circulation parameters on the AOD variations over the Bay of Bengal during ICARB

    Indian Academy of Sciences (India)

    Marina Aloysius; Mannil Mohan; S Suresh Babu; Vijayakumar S Nair; K Parameswaran; K Krishna Moorthy

    2008-07-01

    MODIS (Moderate Resolution Imaging Spectroradiometer) level-3 aerosol data, NCEP (National Centers for Environmental Prediction) reanalysis winds and QuikSCAT ocean surface winds were made use of to examine the role of atmospheric circulation in governing aerosol variations over the Bay of Bengal (BoB) during the first phase of the ICARB (Integrated Campaign for Aerosols, gases and Radiation Budget) campaign (March 18–April 12, 2006). An inter-comparison between MODIS level-3 aerosol optical depth (AOD) data and ship-borne MICROTOPS measurements showed good agreement with correlation 0.92 ( > 0.0001) and a mean MODIS underestimation by 0.01. During the study period, the AOD over BoB showed high values in the northern/north western regions, which reduced towards the central and southern BoB. The wind patterns in lower atmospheric layers (< 850 hPa) indicated that direct transport of aerosols from central India was inhibited by the presence of a high pressure and a divergence over BoB in the lower altitudes. On the other hand, in the upper atmospheric levels, winds from central and northern India stretched south eastwards and converged over BoB with a negative vorticity indicative of a downdraft. These wind patterns pointed to the possibility of aerosol transport from central India to BoB by upper level winds. This mechanism was further confirmed by the significant correlations that AOD variations over BoB showed with aerosol flux convergence and flux vorticity at upper atmospheric levels (600–500 hPa). AOD in central and southern BoB away from continental influences displayed an exponential dependence on the QuikSCAT measured ocean surface wind speed. This study shows that particles transported from central and northern India by upper atmospheric circulations as well as the marine aerosols generated by ocean surface winds contributed to the AOD over the BoB during the first phase of ICARB.

  5. Quantum m-out-of-n Oblivious Transfer

    OpenAIRE

    Chen, Zhide; Zhu, Hong

    2003-01-01

    In the m-out-of-n oblivious transfer (OT) model, one party Alice sends n bits to another party Bob, Bob can get only m bits from the n bits. However, Alice cannot know which m bits Bob received. Y.Mu[MJV02]} and Naor[Naor01] presented classical m-out-of-n oblivious transfer based on discrete logarithm. As the work of Shor [Shor94], the discrete logarithm can be solved in polynomial time by quantum computers, so such OTs are unsafe to the quantum computer. In this paper, we construct a quantum...

  6. Upconversion-based receivers for quantum hacking-resistant quantum key distribution

    Science.gov (United States)

    Jain, Nitin; Kanter, Gregory S.

    2016-07-01

    We propose a novel upconversion (sum frequency generation)-based quantum-optical system design that can be employed as a receiver (Bob) in practical quantum key distribution systems. The pump governing the upconversion process is produced and utilized inside the physical receiver, making its access or control unrealistic for an external adversary (Eve). This pump facilitates several properties which permit Bob to define and control the modes that can participate in the quantum measurement. Furthermore, by manipulating and monitoring the characteristics of the pump pulses, Bob can detect a wide range of quantum hacking attacks launched by Eve.

  7. Obituary: Robert H. Koch (1929-2010)

    Science.gov (United States)

    Koch, Joanne; Corcoran, Michael; Holenstein, Bruce; Sion, Edward

    2011-12-01

    Robert H. Koch, emeritus professor of astronomy and astrophysics at the University of Pennsylvania, passed away at his home in Ardmore, Pennsylvania on 11 October 2010 after a brief illness. Bob was 80 years old and remained sharp and intellectually engaged with the astronomical community up until the onset of complications from a brain tumor. Bob was born in York, Pennsylvania on 19 December 1929, and graduated from York Catholic High School in 1947. He attended the University of Pennsylvania on a senatorial scholarship, graduating in 1951. After two years in the United States Army, he enrolled in graduate school at the University of Pennsylvania, doing his doctoral research on the photoelectric photometry of R CMa, AO Cas, AS Eri, and XY Leo at the Steward Observatory, University of Arizona in Tucson. Bob would continue this exploration of close binary stars, their atmospheres and interactions, for the rest of his career. Bob met his future spouse, Joanne C. Underwood, while in graduate school in 1957 and they were married in 1959. Bob received his PhD in astronomy in 1959 and moved to Amherst, Massachusetts, where he taught as a member of the Four College Astronomy Department until 1966. Following a year at the University of New Mexico in Albuquerque, Bob joined the Astronomy Department at Penn, teaching and doing research there until his retirement in 1996. Bob's main interests were the study of close and eclipsing binary stars, stellar envelopes and winds, intrinsic variables, transits and occultations, and the Milky Way Galaxy, producing well over 100 refereed publications. Bob was partial to photoelectric photometry and polarimetry, conducting most of his observational research at the University of Pennsylvania Flower and Cook Observatory, and at other ground- and space-based observatories. As an international figure in the area of binary stars, Bob had widespread collaborations with scientists at other institutions, in the US and throughout the world, and

  8. Quantum Secure Direct Communication by Using Three-Dimensional Hyperentanglement

    Institute of Scientific and Technical Information of China (English)

    施锦; 龚彦晓; 徐平; 祝世宁; 詹佑邦

    2011-01-01

    We propose two schemes for realizing quantum secure direct communication (QSDC) by using a set of ordered two-photon three-dimensional hyperentangled states entangled in two degrees of freedom (DOFs) as quantum information channels. In the first scheme, the photons from Bob to Alice are transmitted only once. After insuring the security of the quantum channels, Bob encodes the secret message on his photons. Then Alice performs single-photon two-DOF Bell bases measurements on her photons. This scheme has better security than former QSDC protocols. In the second scheme, Bob transmits photons to Alice twice. After insuring the security of the quantum channels, Bob encodes the secret message on his photons. Then Alice performs two-photon Bell bases measurements on each DOF. The scheme has more information capacity than former Q,SDC protocols.

  9. Pop / Tõnu Kaalep

    Index Scriptorium Estoniae

    Kaalep, Tõnu, 1966-

    2006-01-01

    Uutest heliplaatidest Charlotte Gainsbourg "5.55", Bob Dylan "Modern Times", Orson "Bright Idea", Adem "Love and Other Planets", Basement Jaxx "Crazy Itch Radio", Audioslave "Revelations", Cassius "15 Again", Nitrous "Dominant Force", the Answer "Rise2

  10. Plaadid / Mari Rebane, Heidi Purga, Tiiu Laks...[jt.

    Index Scriptorium Estoniae

    2008-01-01

    Uutest heliplaatidest Sigur Ros "Heim/Hvart", Jay-Z "American Gangster", Bob Marley and The Wailers "Roots, Rock, Remixed", Ghostface killah "The Big doe Rehab", Backstreet Boys "Unbreakable", Matchbox Twenty "Exile on Mainstream", "Just" Hits 6"

  11. 10. VI avati Tartus Sadamateatris...

    Index Scriptorium Estoniae

    2005-01-01

    Näitus "The 2D Cowboys and a Man from No Man's Land". New Mexico kunstnikud Larry Bob Phillips, Mathew Williams (Mad Dog), Doug Morris (grupeering 2D Cowboys) ja Eesti juurtega Pat Kikut eksponeerivad maali, joonistusi ja kollaazhe

  12. Tips for Keeping Halloween Safe and Fun

    Science.gov (United States)

    ... News) -- Trick-or-treating, bobbing for apples and costume parties are just a few things kids love ... do not reflect the views of MedlinePlus, the National Library of Medicine, the National Institutes of Health, ...

  13. Uudiseid maailmast / Ivo Heinloo

    Index Scriptorium Estoniae

    Heinloo, Ivo

    2012-01-01

    Lühisõnumeid muusikamaailmast: Pat Metheny Group tuleb taas kokku. Musta muusika auhinnad Suurbritannias. Bob Marley muusika kui õppevahend inglise keele omandamiseks. Ted Curson 1935-2012. In memoriam David S. Ware. In memoriam Terry Callier

  14. Tappev kuulsus viib Chicago lavale / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2003-01-01

    Muusikafilm "Chicago", mille aluseks John Kanderi - Fred Ebb'i muusikal : režissöör Rob Marshall : Ameerika Ühendriigid 2002. 1975.a. selle muusikali Broadwayl lavale toonud Bob Fosse mõjust filmi stiilile

  15. Plaadid / Valner Valme

    Index Scriptorium Estoniae

    Valme, Valner, 1970-

    2004-01-01

    Uutest heliplaatidest Handsome Boy Modelling School "White People", Moron, Julies "Premium Par", Harrison, Joel "So Long 2nd Street", General Electrics "Cliquety Kliqk", Razorlight "Up All Night", Bob Marley & Wailers "127 King Street"

  16. Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations

    Institute of Scientific and Technical Information of China (English)

    YAN Feng-Li; GAO Ting; LI You-Cheng

    2008-01-01

    @@ We propose a scheme of quantum secret sharing between Alice's group and Bob's group with single photons and unitary transformations. In the protocol, one member in Alice's group prepares a sequence of single photons in one of four different states, while other members directly encode their information on the sequence of single photons via unitary operations; after that, the last member sends the sequence of single photons to Bob's group.Then Bob's, except for the last one, do work similarly. Finally the last member in Bob's group measures the qubits. If the security of the quantum channel is guaranteed by some tests, then the qubit states sent by the last member of Alice's group can be used as key bits for secret sharing. It is shown that this scheme is safe.

  17. The Government’s financial support for fossil fuel companies is being overlooked

    OpenAIRE

    Ward, Bob

    2012-01-01

    Bob Ward explores the subsidies currently doled out by the government to fossil fuel companies and asks why it has not attracted the same degree of criticism as subsidies for the renewable energy industry.

  18. Linnud teevad järglastel vahet

    Index Scriptorium Estoniae

    2012-01-01

    Ajakirjas Behavioral Ecology and Sociobiology avaldatud Queensi ülikooli teadlase Bob Montgomerie uuringust, mis tõestas, et isa punarinnad toitsid kaks korda innukamalt oma poegi, kes sündisid säravama sinise varjundiga munadest

  19. Pop / Marek Kallin

    Index Scriptorium Estoniae

    Kallin, Marek

    2005-01-01

    Heliplaatidest: Cardigans "Super Extra Gravity", Earth, Wind & Fire "Illumination", Stevie Wonder "A Time To Love", Shout Out Louds "Howl Howl Gaff Gaff", Goldie Lookin Chain "Safe As Fuck", Ms. Dynamite "Judgement Days", Echosilence "Distorted Horizon", Bob Dylan "No Direction Home"

  20. 新型锂盐--双乙二酸硼酸锂%A New Lithium Salt--Lithium Bis(oxalato)borate

    Institute of Scientific and Technical Information of China (English)

    余碧涛; 仇卫华; 李福燊

    2005-01-01

      介绍了新型锂盐--双乙二酸硼酸锂(LiBOB)的基本性质及其电解液在锂离子电池中的应用研究,并与现在常用的产业化锂盐LiPF6进行比较,总结了LiBOB的优缺点,指出了其进一步的研究方向。%  The reseaches of lithium bis(oxalato)borate (LiBOB) as a salt for lithium-ion batteries are summarized. Its physical and chemical properties and LiBOB-based electrolytes have been introduced in detail and compared with those of LiPF6. The advantages and disadvantages of LiBOB and its research emphases in future are also pointed out.

  1. Maintain a Heart Healthy Lifestyle

    Medline Plus

    Full Text Available ... activity. BOB WELTNER: My heart stopped and in theory, I guess I was dead. But through the ... The truth is that heart disease is the number one cause of death among women. And the ...

  2. Plaadid / Priit Juurmann

    Index Scriptorium Estoniae

    Juurmann, Priit

    2006-01-01

    Uutest heliplaatidest Alexkid "Caracol", Bob Dylan "Modern Times", Justin Timberlake "Future Sex", Ilves, Pulk ja Rahman "Murõt ei olõ", Audioslave "Revelations", Bill Frisell "Bill Frisell, Ron Carter, Paul Motian", Julie & Khari "Moon Bossa"

  3. Is the biological productivity in the Bay of Bengal light limited?

    Digital Repository Service at National Institute of Oceanography (India)

    PrasannaKumar, S.; Narvekar, J.; Nuncio, M.; Kumar, A.; Ramaiah, N.; Sardessai, S.; Gauns, M.; Fernandes, V.; Paul, J.

    Recent measurements of chlorophyll, primary productivity (PP) and nutrients along the central Bay of Bengal (BOB) during summer, fall and spring intermonsoons showed that the northern bay becomes less productive compared to the south in summer...

  4. Impact of river discharge on the coastal water pH and pCO2 levels during the Indian Ocean Dipole (IOD) years in the western Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Sarma, V.V.S.S.; Paul, Y.S.; Vani, D.G.; Murty, V.S.N.

    > levels in the coastal western BoB. It could be envisioned that the enhanced acidity in the coastal waters due to variations in river discharge and phases of IOD may significantly modify the coastal ecosystem that requires careful evaluation...

  5. Popmuusika / Mart Juur

    Index Scriptorium Estoniae

    Juur, Mart, 1964-

    2006-01-01

    Uutest heliplaatidest Kent "Du & Jag", "Lindstom & Prins Thomas", Taj Mahal "The Essential", Wilco "Kicking elevision - Live In Chicago", Yo-Yo Ma "The Essential", Bob marley & The Wailers "Africa Unite: The Singles", Nine Horses "Snow Borne Sorrow"

  6. Progerock-passioon / Mari Laaniste

    Index Scriptorium Estoniae

    Laaniste, Mari, 1977-

    2006-01-01

    Briti ansambli Pink Floydi heliplaadi "The Wall" (1979) filmiversioonist. Muusikafilm "Müür" ("Pink Floyd The Wall") : stsenarist Roger Waters : režissöör Alan Parker Pinki rollis Bob Geldof : Suurbritannia 1982

  7. Avian Point Count datasheets for Dahomey NWR Conducted by Robert Cooper, University of Memphis in 1992

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Data sheets of avain point counts and map show general locations of survey on Dahomey NWR in 1992 are provided. Surveys were conducted by Bob Cooper at University...

  8. Plaadid / Mari Peegel

    Index Scriptorium Estoniae

    Peegel, Mari, 1978-

    2005-01-01

    Uutest heliplaatidest Neil Tennant/Chris Lowe "Battleship Potemkin", Institute "Distort Yourself", Bob Dylan "No Direction Home", Jem "Finally Woken", Machine Men "Elegies", Jamie Cullum "Catching Tales", Bloodhound Gang "Hefty Fine"

  9. Building and Operating Spacelab: Spacelab Design and Systems Engineering Panel

    Science.gov (United States)

    Roth, Axel; Berge, Klaus; Thirkettle, Alan; Craft, Harry G., Jr.; Benson, Robert

    2000-01-01

    This document is the transcription of the Spacelab Design and Systems Engineering Panel's discussion of the Spacelab program. It includes information on Spacelab's origin and development. The panel includes Klaus Berge, Bob Benson, Allan Thirkettle, and Harry Craft.

  10. Bogi i monstrõ, ili biografija Supermena / Olga Marsheva

    Index Scriptorium Estoniae

    Marsheva, Olga

    2007-01-01

    Ameerika tuntuimad koomiksikunstnikud Larry Hama, Stan Lee, Jerry Seagel, Bob Kain, Frank Miller ja nende loodud tegelaskujud. Ka briti kirjanik Alan Moore, kellele ei meeldi oma kangelastest tehtud ekraniseeringuid vaadata

  11. Maintain a Heart Healthy Lifestyle

    Medline Plus

    Full Text Available ... attack from happening. BOB WELTNER: The type of exercise that I do now is I have a ... Family Heart Program. When we go to our exercise class each week, they take our blood pressure ...

  12. Location-Oblivious Data Transfer with Flying Entangled Qudits

    CERN Document Server

    ,

    2011-01-01

    We present a simple and practical quantum protocol involving two mistrustful agencies in Minkowski space, which allows Alice to transfer data to Bob at a spacetime location that neither can predict in advance. The location depends on both Alice's and Bob's actions. The protocol guarantees unconditionally to Alice that Bob learns the data at a randomly determined location; it guarantees to Bob that Alice will not learn the transfer location even after the protocol is complete. The task implemented, transferring data at a space-time location that remains hidden from the transferrer, has no precise analogue in non-relativistic quantum cryptography. It illustrates further the scope for novel cryptographic applications of relativistic quantum theory.

  13. Asymmetric Bidirectional Controlled Teleportation by using a Seven-qubit Entangled State

    Science.gov (United States)

    Hong, Wen-qin

    2016-01-01

    We propose a new protocol of asymmetric bidirectional controlled teleportation by using a seven-qubit entangled state as the quantum channel. That is to say Alice wants to transmit an arbitrary single-qubit state to Bob and Bob wants to transmit an arbitrary two-qubit state to Alice via the control of the supervisor Charlie. One only need perform the Bell-state measurements and single-qubit measurement.

  14. Asymmetric Bidirectional Controlled Teleportation via Seven-qubit Cluster State

    Science.gov (United States)

    Yang, Yu-Quan; Zha, Xin-Wei; Yu, Yan

    2016-05-01

    We propose a new protocol of asymmetric bidirectional controlled teleportation by using a seven-qubit cluster state as the quantum channel. That is to say Alice wants to transmit an arbitrary single-qubit state to Bob and Bob wants to transmit an arbitrary two qubit state to Alice via the control of the supervisor Charlie. One only need perform the Bell-state measurements and single-qubit measurement.

  15. Covert Communication Gains from Adversary's Ignorance of Transmission Time

    OpenAIRE

    Bash, Boulat A.; Goeckel, Dennis; Towsley, Don

    2014-01-01

    The recent square root law (SRL) for covert communication demonstrates that Alice can reliably transmit $\\mathcal{O}(\\sqrt{n})$ bits to Bob in $n$ uses of an additive white Gaussian noise (AWGN) channel while keeping ineffective any detector employed by the adversary; conversely, exceeding this limit either results in detection by the adversary with high probability or non-zero decoding error probability at Bob. This SRL is under the assumption that the adversary knows when Alice transmits (i...

  16. Controlled Teleportation of an Unknown N-qubit Entangled GHZ State

    Institute of Scientific and Technical Information of China (English)

    JIANG Wei-Xing; FANG Jian-Xing; ZHU Shi-Qun; SHA Jin-Qiao

    2007-01-01

    A scheme for controlled teleportation of an unknown N-qubit entangled GHZ state from the sender Alice to the distant receiver Bob is proposed. And m-qubit GHZ state is sufficient for the task of control by m spatiallyseparated supervisors. Conditioned on the local operations executed by all participants, Bob can faithfully restore the original state by performing relevant unitary transformations with the aid of some classical message about measurement results. Anyone's absence will absolutely lead to the failure of teleportation.

  17. Notes on teleportation in an expanding space

    CERN Document Server

    Feng, Jun; Zhang, Yao-Zhong; Fan, Heng

    2012-01-01

    We investigate the quantum teleportation between a conformal detector Alice and an inertial detector Bob in de Sitter space. We show that the fidelity of the teleportation is degraded for Bob due to the Gibbons-Hawking effect associated with his cosmological event horizon. With a cutoff at Planck-scale, comparing with the standard Bunch-Davies choice, we also show that the possible Planckian physics cause extra modifications to the fidelity of the teleportation process.

  18. No-Concentrating Theorem of Pure Entangled States

    OpenAIRE

    Zhang, Chuan-Wei; Li, Chuan-Feng; Guo, Guang-Can

    1999-01-01

    Suppose two distant observers Alice and Bob share a pure biparticle entangled state secretly chosen from a set, it is shown that Alice (Bob) can probabilistic concentrate the state to a maximally entangled state by applying local operations and classical communication (LQCC) if and only if the states in the set share the same marginal density operator for her (his) subsystem. Applying this result, we present probabilistic superdense coding and show that perfect purification of mixed state is ...

  19. Quantum direct communication with authentication

    International Nuclear Information System (INIS)

    We propose two quantum direct communication (QDC) protocols with user authentication. Users can identify each other by checking the correlation of Greenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret message to Bob without any previously shared secret using the remaining GHZ states after authentication. Our second QDC protocol can be used even though there is no quantum link between Alice and Bob. The security of the transmitted message is guaranteed by properties of entanglement of GHZ states

  20. Biogeochemistry of the Bay of Bengal: Physical, chemical and primary productivity characteristics of the central and western Bay of Bengal during summer monsoon 2001

    Digital Repository Service at National Institute of Oceanography (India)

    Madhupratap, M.; Gauns, M.; Ramaiah, N.; PrasannaKumar, S.; Muraleedharan, P.M.; DeSousa, S.N.; Sardessai, S.; Muraleedharan, U.D.

    in phytoplankton biomass through grazing. All these bring us to some other questions pertaining to the biogeochemistry of the BOB. The fact remains that the productivity of the BOB remains an enigma with conflicting reports over seasons and areas. Obviously.... Avina Barretto, Ms. Xavita Vaz, Ms. Karen Lobo and Ms. Loretta Fernandes for their efficient co-operation and help on board. We also appreciated the help of Mr. A. Mahale in preparing the figures. This is NIO contribution number 3744. 14...

  1. Unexpected increasing AOT trends over northwest Bay of Bengal in the early postmonsoon season

    Energy Technology Data Exchange (ETDEWEB)

    Kishcha, P.; Starobinets, B.; Long, Charles N.; Alpert, P.

    2012-12-13

    The main point of our study is that aerosol trends can be created by changes in meteorology without changes in aerosol source strength. Over the 10 year period 2000–2009, in October, Moderate Resolution Imaging Spectroradiometer (MODIS) showed strong increasing aerosol optical thickness (AOT) trends of approximately 14% yr-1 over northwest Bay of Bengal (BoB) in the absence of AOT trends over the east of the Indian subcontinent. This was unexpected because sources of anthropogenic pollution were located over the Indian subcontinent and aerosol transport from the Indian subcontinent to northwest BoB was carried out by prevailing winds. In October, winds over the east of the Indian subcontinent were stronger than winds over northwest BoB, which resulted in wind convergence and accumulation of aerosol particles over northwest BoB. Moreover, there was an increasing trend in wind convergence over northwest BoB. This led to increasing trends in the accumulation of aerosol particles over northwest BoB and, consequently, to strong AOT trends over this area. In contrast to October, November showed no increasing AOT trends over northwest BoB or the nearby Indian subcontinent. The lack of AOT trends over northwest BoB corresponds to a lack of trends in wind convergence in that region. Finally, December domestic heating by the growing population resulted in positive AOT trends of similar magnitude over land and sea. Our findings illustrate that in order to explain and predict trends in regional aerosol loading, meteorological trends should be taken into consideration together with changes in aerosol source strength.

  2. Bioassay-guided in vitro study of the antileishmanial and cytotoxic properties of Bixa orellana seed extract

    Directory of Open Access Journals (Sweden)

    Marley García

    2014-06-01

    Full Text Available Objective: To investigate the leishmanicidal effect of the Bixa orellana crude seed extract and its fractions against Leishmania amazonensis. Methods: Four main fractions (BO-A, BO-B, BO-C and BO-D were obtained by exhaustion with solvent with increased polarity from the Bixa orellana crude seed extract and 28 sub-fractions. The antileishmanial activity was evaluated in intracellular amastigotes and the cytotoxicity was assessed in murine intraperitoneal macrophages. Results: The BO-A and BO-B fractions showed a good antileishmanial activity with IC50 values of (12.9±4.1 and (12.4±0.3 μg/mL, respectively. The sub-fractions BO-B1 (IC50=(11.8±3.8 μg/mL and BO-B3 [IC50=(13.6±4.7 μg/mL] also proved to have a good leishmanicidal effect. In general, the sub-fractions showed a lower toxicity than the crude extract. A selectivity index of 9 indicated a moderate selectivity of the BO-A, BO-B and BO-C fractions and BO-B1 sub-fraction. Conclusions: Potential of this plant against cutaneous leishmaniasis should be further investigated.

  3. Gaussian quantum steering and its asymmetry in curved spacetime

    Science.gov (United States)

    Wang, Jieci; Cao, Haixin; Jing, Jiliang; Fan, Heng

    2016-06-01

    We study Gaussian quantum steering and its asymmetry in the background of a Schwarzschild black hole. We present a Gaussian channel description of quantum state evolution under the influence of Hawking radiation. We find that thermal noise introduced by the Hawking effect will destroy the steerability between an inertial observer Alice and an accelerated observer Bob who hovers outside the event horizon, while it generates steerability between Bob and a hypothetical observer anti-Bob inside the event horizon. Unlike entanglement behaviors in curved spacetime, here the steering from Alice to Bob suffers from a "sudden death" and the steering from anti-Bob to Bob experiences a "sudden birth" with increasing Hawking temperature. We also find that the Gaussian steering is always asymmetric and the maximum steering asymmetry cannot exceed ln 2 , which means the state never evolves to an extremal asymmetry state. Furthermore, we obtain the parameter settings that maximize steering asymmetry and find that (i) s =arccosh cosh/2r 1 -sinh2r is the critical point of steering asymmetry and (ii) the attainment of maximal steering asymmetry indicates the transition between one-way steerability and both-way steerability for the two-mode Gaussian state under the influence of Hawking radiation.

  4. Bioassay-guided in vitro study of the antileishmanial and cytotoxic properties of Bixa orellana seed extract

    Institute of Scientific and Technical Information of China (English)

    Marley Garca; Ramn Scull; Osmany Cuesta; Galle Boulet; Louis Maes; Paul Cos; Lianet Monzote

    2014-01-01

    Objective:To investigate the leishmanicidal effect of the Bixa orellana crude seed extract and its fractions against Leishmania amazonensis. Methods:Four main fractions (BO-A, BO-B, BO-C and BO-D) were obtained by exhaustion with solvent with increased polarity from the Bixa orellana crude seed extract and 28 sub-fractions. The antileishmanial activity was evaluated in intracellular amastigotes and the cytotoxicity was assessed in murine intraperitoneal macrophages. Results:The BO-A and BO-B fractions showed a good antileishmanial activity with IC50 values of (12.9±4.1) and (12.4±0.3) μg/mL, respectively. The sub-fractions BO-B1 (IC50=(11.8±3.8) μg/mL) and BO-B3 [IC50=(13.6±4.7) μg/mL] also proved to have a good leishmanicidal effect. In general, the sub-fractions showed a lower toxicity than the crude extract. A selectivity index of 9 indicated a moderate selectivity of the BO-A, BO-B and BO-C fractions and BO-B1 sub-fraction. Conclusions: Potential of this plant against cutaneous leishmaniasis should be further investigated.

  5. Air Pollution over North-West Bay of Bengal in the Early Post-Monsoon Season Based on NASA MERRAero Data

    Science.gov (United States)

    Kishcha, Pavel; DaSilva, Arlindo M.; Starobinets, Boris; Alpert, Pinhas

    2013-01-01

    The MERRA Aerosol Reanalysis (MERRAero) has been recently developed at NASA's Global Modeling Assimilation Office (GMAO). This reanalysis is based on a version of the GEOS-5 model radiatively coupled with GOCART aerosols, and it includes assimilation of bias-corrected Aerosol Optical Thickness (AOT) from the MODIS sensor on both Terra and Aqua satellites. Our main finding is that, in October, in the absence of aerosol sources in north-west Bay of Bengal (BoB), MERRAero showed increasing AOT trends over north-west BoB exceeding those over the east of the Ganges basin. The Ganges basin is characterized by significant population growth accompanied by developing industry, agriculture, and increasing transportation: this has resulted in declining air quality. MERRAero data for the period 2002-2009 was used to study AOT trends over north-west Bay of Bengal (BoB) in the early post-monsoon season. This season is characterized by aerosol transport from the Ganges basin to north-west BoB by prevailing winds; and still significant rainfall of over 150 mmmonth. Different aerosol components showed strong increasing AOT trends over north-west BoB. The following factors contributed to the increasing AOT trend over the area in question in October: an increasing number of days when prevailing winds blew from land to sea, resulting in a drier environment and an increase in air pollution over north-west BoB; wind convergence was observed over north-west BoB causing the accumulation of aerosol particles over that region, when prevailing winds blew from land to sea. MERRAero aerosol reanalysis can be used on a global scale.

  6. Obituary: Robert C. Bless (1927 - 2015)

    Science.gov (United States)

    Surrounded by his loving family, Robert Charles Bless died at home on November 29th, three days before his 88th birthday. He was born in Ithaca, NY on Dec. 3, 1927 to a Russian father, Arthur Aaron Bless, and a French mother, Eva Chantrell Bless. Bob spent many summers on the family farm in the South of France, where he gained a great pride and joy in his French heritage, large extended family, and mother tongue. As a child growing up in Gainesville, FL, Bob's first job was snake wrangling, earning 10 cents per foot, with an added bonus for the more venomous species. Young Robbie took daily adventures in the Florida woods and swamps, armed only with pockets full of pecans and oranges. He enjoyed spending time at the family's lake cabin, where he learned to sail and helped his father plant acres of trees to grow their timber plantation. As a first generation immigrant, Bob's father received a PhD in physics, which inspired Bob to pursue an extensive educational route in astrophysics. Bob excelled in academics, graduating high school at the age of 16 and the University of Florida (B.Sc.) at 19. His path to graduate school was interrupted by a diagnosis of tuberculosis that forced him into a Florida sanitorium for one year. During this time, Bob made the most of what he described as the most dismal part of life by advocating for patient rights, initiating an inter-sanitorium newsletter, and gaining skills and experience in community organization and leadership - qualities that would later inform his leadership in academe. After being one of the first successfully treated tuberculosis patients in the US, Bob went on to earn a M.Sc. from Cornell University, and received his PhD degree in Astronomy from the University of Michigan in 1958. That same year, Bob joined the staff of the Astronomy Department of the University of Wisconsin (UW), Madison. It was there that Bob met Diane McQueen. Despite Bob's Dodge Dart and what has been described as the worst first date in

  7. Secure communication via quantum illumination

    Science.gov (United States)

    Shapiro, Jeffrey H.; Zhang, Zheshen; Wong, Franco N. C.

    2014-10-01

    In the quantum illumination protocol for secure communication, Alice prepares entangled signal and idler beams via spontaneous parametric downconversion. She sends the signal beam to Bob, while retaining the idler. Bob imposes message modulation on the beam he receives from Alice, amplifies it, and sends it back to her. Alice then decodes Bob's information by making a joint quantum measurement on the light she has retained and the light she has received from him. The basic performance analysis for this protocol—which demonstrates its immunity to passive eavesdropping, in which Eve can only listen to Alice and Bob's transmissions—is reviewed, along with the results of its first proof-of-principle experiment. Further analysis is then presented, showing that secure data rates in excess of 1 Gbps may be possible over 20-km-long fiber links with technology that is available or under development. Finally, an initial scheme for thwarting active eavesdropping, in which Eve injects her own light into Bob's terminal, is proposed and analyzed.

  8. Influence of Summer Monsoon on Asymmetric Bimodal Pattern of Tropical Cyclogenesis Frequency over the Bay of Bengal

    Institute of Scientific and Technical Information of China (English)

    XING Wen; HUANG Fei

    2013-01-01

    influence of summer monsoon on tropical cyclone (TC) genesis over the Bay of Bengal (BoB) is explored using an empirical genesis potential (GP) index.The annual cycle of cyclogenesis frequency over the BoB shows an asymmetric bimodal pattern with the maximum genesis number appearing in late October and the second largest in early May.The two peaks correspond to the withdrawal and onset of the BoB summer monsoon,respectively.The semimonthly GP index calculated without TC days over the BoB is consistent with TC genesis frequency,indicating that the index captures the monsoon-induced changes in the environment that are responsible for the seasonal variation of TC genesis frequency.Of the four environmental variables (i.e.,low-level vorticity,mid-level relative humidity,potential intensity,and vertical wind shear) that enter into the GP index,the potential intensity makes the largest contribution to the bimodal distribution,followed by vertical wind shear due to small wind speed during the summer monsoon onset and withdrawal.The difference in TC genesis frequency between autumn and late spring is mainly owing to the relative humidity difference because a divergence (convergence) of horizontal moisture flux associated with cold dry northerlies (warm wet westerlies) dominates the BoB in late spring (autumn).

  9. Spatial and temporal variability of chlorophyll in Bay of Bengal.

    Science.gov (United States)

    Jutla, A.; Akanda, S.; Islam, S.

    2009-04-01

    The Bay of Bengal (BoB) receives approximately 628 km3/ year of freshwater discharge from the Ganges and Brahmaputra rivers. Freshwater discharge from rivers increases the nutrient load and thereby enhances phytoplankton production in the BoB. Cholera, an infectious water-borne disease caused by bacterium Vibrio cholerae, remains endemic in the BoB region. Phytoplankton provides favorable environment for survival of cholera bacteria. Therefore, for development of any predictive model for cholera, it is important to quantify the spatial and temporal variability of phytoplankton in the BoB. Satellite remote sensing is the most effective way to quantify this variability over a range of space and time scales. Using ten years (1998-2007) of daily, weekly and monthly SeaWiFs chlorophyll, a surrogate variable for measuring phytoplankton, imagery we explore the spatial pattern and dominant temporal variability of chlorophyll over the BoB region. We find that chlorophyll in the coastal waters has more variability, both in temporal and spatial scales, than the offshore waters. Mechanism of production and space-time variability of coastal chlorophyll is different from those of offshore chlorophyll. While coastal chlorophyll is dominated by influx of terrestrial nutrients through river discharge, chlorophyll in the offshore region is primarily controlled by oceanic processes. We will also explore issues related to dominant space and time scales of chlorophyll variations in the entire bay.

  10. On the Communication Complexity of Secure Function Evaluation with Long Output

    DEFF Research Database (Denmark)

    Hubacek, Pavel; Wichs, Daniel

    2015-01-01

    We study the communication complexity of secure function evaluation (SFE). Consider a setting where Alice has a short input χA, Bob has an input χB and we want Bob to learn some function y = f(χA, χB) with large output size. For example, Alice has a small secret decryption key, Bob has a large...... encrypted database and we want Bob to learn the decrypted data without learning anything else about Alice's key. In a trivial insecure protocol, Alice can just send her short input χA to Bob. However, all known SFE protocols have communication complexity that scales with size of the output y, which can......-but-curious SFE protocol whose communication complexity only scales with that of the best insecure protocol for evaluating the desired function, independent of the output size. Our construction relies on a novel way of using iO via a new tool that we call a 'somewhere statistically binding (SSB) hash', and which...

  11. Blood-ocular barrier damage: use of contrast-enhanced MRI

    International Nuclear Information System (INIS)

    The blood-ocular barrier (BOB) shares similar neuroepithelial origin, microanatomy and functions with the blood-brain barrier. There are many natural (e. g. diabetes, hypertension) or iatrogenic (chemotherapy, retinal photocoagulation) conditions which can cause a BOB breakdown, resulting in visual acuity impairment or loss. The authors examined 42 patients affected by BOB damage in different pathological conditions. All patients previously underwent a conventional fluoroangiographic (FA) study. Nine patients with normal FA exam were evaluated also. Despite normal MRI findings immediately after Gd-DTPA injection, contrast leakage into the vitreous body or into the aqueous fluid was demonstrated in delayed scans (40-50 min after contrast administration), proving the existence of a BOB damage (sensitively 94 %). Although FA exam remains the choice modality in BOB breakdown demonstration, we propose MRI as a useful diagnostic tool when optic media opacity (cataract, haemovitreous, intraocular silicon oil) occurs, preventing direct retinal fundus imaging and/or an early screening tool. (orig.). With 6 figs., 1 tab

  12. Measurement of ambient NH{sub 3} over Bay of Bengal during WICARB Campaign

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, S.K.; Mandal, T.K.; Saxena, M.; Singh, S. [CSIR-National Physical Laboratory, New Delhi (India); Singh, A.K.; Ghosh, S.K.; Raha, S. [Centre for Astroparticle Physics and Space Science, Darjeeling, West Bengal (India). Bose Inst.; Centre for Astroparticle Physics and Space Science, Kolkata, West Bengal (India). Bose Inst.; Saud, T. [CSIR-National Physical Laboratory, New Delhi (India); Guru Govind Singh Indraprastha Univ., New Delhi (India)

    2012-07-01

    Concentrations of ambient NH{sub 3}, NO, NO{sub 2} and SO{sub 2} were measured over Bay of Bengal (BoB) during 28 December 2008 to 25 January 2009 to study their diurnal variation and relationship of NH{sub 3} with other trace gases over BoB. The measurements were done under the winter phase of Integrated Campaign on Aerosols and Radiation Budget (WICARB). For the first time, ambient NH{sub 3} was monitored precisely over BoB based on chemiluminescence method, having estimation efficiency more precise than the chemical trap method. The average concentration of ambient NH{sub 3}, NO, NO{sub 2} and SO{sub 2} were recorded as 4.78{+-}1.68, 1.89{+-}1.26, 0.31{+-}0.14 and 0.80{+-}0.30 {mu}gm{sup -3}, respectively, over BoB. The prominent latitudinal and longitudinal variations of the trace gases were observed over BoB, whereas NH{sub 3} and NO showed the non-significant diurnal variation. Results reveal that the concentration of ambient NH{sub 3} negatively correlated with ambient NO{sub 2} (r{sup 2} =.0.56), SO{sub 2} (r{sup 2} =.0.58) and ambient temperature (r{sup 2} =.0.27) during the study. (orig.)

  13. QKD Quantum Channel Authentication

    CERN Document Server

    Kosloski, J T

    2006-01-01

    Several simple yet secure protocols to authenticate the quantum channel of various QKD schemes, by coupling the photon sender's knowledge of a shared secret and the QBER Bob observes, are presented. It is shown that Alice can encrypt certain portions of the information needed for the QKD protocols, using a sequence whose security is based on computational-complexity, without compromising all of the sequence's entropy. It is then shown that after a Man-in-the-Middle attack on the quantum and classical channels, there is still enough entropy left in the sequence for Bob to detect the presence of Eve by monitoring the QBER. Finally, it is shown that the principles presented can be implemented to authenticate the quantum channel associated with any type of QKD scheme, and they can also be used for Alice to authenticate Bob.

  14. Interactive simulations for quantum key distribution

    CERN Document Server

    Kohnle, Antje

    2016-01-01

    Secure communication protocols are becoming increasingly important, e.g. for internet-based communication. Quantum key distribution allows two parties, commonly called Alice and Bob, to generate a secret sequence of 0s and 1s called a key that is only known to themselves. Classically, Alice and Bob could never be certain that their communication was not compromised by a malicious eavesdropper. Quantum mechanics however makes secure communication possible. The fundamental principle of quantum mechanics that taking a measurement perturbs the system (unless the measurement is compatible with the quantum state) also applies to an eavesdropper. Using appropriate protocols to create the key, Alice and Bob can detect the presence of an eavesdropper by errors in their measurements. As part of the QuVis Quantum Mechanics Visualization Project, we have developed a suite of four interactive simulations that demonstrate the basic principles of three different quantum key distribution protocols. The simulations use either...

  15. Hiding Quantum Information in the Perfect Code

    CERN Document Server

    Shaw, Bilal A

    2010-01-01

    We present and analyze a protocol for quantum steganography where the sender (Alice) encodes her steganographic information into the error syndromes of the perfect (five-qubit) quantum error-correcting code, and sends it to the receiver (Bob) over a depolarizing channel. Alice and Bob share a classical secret key, and hide quantum information in such a way that to an eavesdropper (Eve) without access to the secret key, the quantum message looks like an innocent codeword with a typical sequence of quantum errors. We calculate the average rate of key consumption, and show how the protocol improves in performance as information is spread over multiple codeword blocks. Alice and Bob utilize different encodings to optimize the average number of steganographic bits that they can send to each other while matching the error statistics of the depolarizing channel.

  16. Securing Communication via Transmission of Artificial Noise by Both Sides: Bipolar-Beamforming Optimization

    Directory of Open Access Journals (Sweden)

    Yongkai Zhou

    2013-01-01

    Full Text Available The paper considers the secure transmission in a wireless environment in which both the transmitter (Alice and the legitimate receiver (Bob send artificial noise (AN to interfere with the eavesdropper (Eve. Optimal design is analyzed in detail for this AN-by-both-side model to deal with Eve’s stochastic channel condition and random spatial distribution. Bipolar-beamforming is first proposed to jointly design Alice and Bob’s transmitting signals. By optimally assigning the transmitting antenna for Bob and allocating the power ratio between Alice’s information and the AN signal, maximum secrecy capacity can be achieved. Simulation is done to illustrate the process of bipolar-beamforming optimization. Results show that the AN-by-both-side model has good secrecy performance on both average and extreme conditions as Eve approaches Alice or Bob.

  17. Multi-agent controlled teleportation of multi-qubit quantum information via two-step protocol

    Institute of Scientific and Technical Information of China (English)

    Yang Jie

    2005-01-01

    Utilizing both the general quantum teleportation and the two-step protocol, a new method is presented by which multi-qubit quantum information can be teleported in a much easier way from a sender Alice to a receiver Bob via the control of many agents in a network than by Yang et al's method. In this method, only all the agents collaborate with Bob can the unknown states in Alice's qubits be fully reconstructed in Bob's qubits. Comparisons between the method and Yang et al's method are made. Results show that, in this method, the preparation difficulty of initial states and the identification difficulty of entangled states are considerably reduced, new method is more feasible in technique, and Hadamard operations are not needed at all.

  18. Controlled and secure direct communication using GHZ state and teleportation

    International Nuclear Information System (INIS)

    A theoretical scheme for controlled and secure direct communication is proposed. The communication is based on GHZ state and controlled quantum teleportation. After insuring the security of the quantum channel (a set of qubits in the GHZ state), alice encodes the secret message directly on a sequence of particle states in the GHZ state and transmits them to Bob, supervised by Charlie using controlled quantum teleportation. Bob can read out the encoded messages directly by the measurement on his qubits. In this scheme, the controlled quantum teleportation transmits alice's message without revealing any information to a potential eavesdropper. Because there is not a transmission of the qubit carrying the secret messages between Alice and Bob in the public channel, it is completely secure for controlled and direct secret communication if a perfect quantum channel is used. The feature of this scheme is that the communication between two sides depends on the agreement of a third side. (orig.)

  19. 修订版《新标准英语》(一起)一(下)Module 6 Unit 1 These snakes are short

    Institute of Scientific and Technical Information of China (English)

    陈羽

    2015-01-01

    教学过程一、Warm-up(热身环节)(略)二、Lead-in(导入环节)1.Show some pictures of dog.Ask Ss what animal is it?借助道具逐个呈现Bob的拼图,引导学生发现并复习学过的chant"Bob,Bob,Bob,it’s an orange dog."同时自然过渡到文本。T:I’ll show you another dog.What color is it?Ss:It’s a yellow dog.T:What else can you see in the picture?Ss:I can see a white cat.T:A dog and a cat,so what’s the matter?

  20. Controlled quantum secure direct communication by entanglement distillation or generalized measurement

    Science.gov (United States)

    Tan, Xiaoqing; Zhang, Xiaoqian

    2016-05-01

    We propose two controlled quantum secure communication schemes by entanglement distillation or generalized measurement. The sender Alice, the receiver Bob and the controllers David and Cliff take part in the whole schemes. The supervisors David and Cliff can control the information transmitted from Alice to Bob by adjusting the local measurement angles θ _4 and θ _3. Bob can verify his secret information by classical one-way function after communication. The average amount of information is analyzed and compared for these two methods by MATLAB. The generalized measurement is a better scheme. Our schemes are secure against some well-known attacks because classical encryption and decoy states are used to ensure the security of the classical channel and the quantum channel.

  1. Analysis of Counterfactual Quantum Certificate Authorization

    Science.gov (United States)

    Wang, Tian-Yin; Li, Yan-Ping; Zhang, Rui-Ling

    2016-09-01

    A counterfactual quantum certificate authorization protocol was proposed recently (Shenoy et al., Phys. Rev. A 89, 052307 (20)), in which a trusted third party, Alice, authenticates an entity Bob (e.g., a bank) that a client Charlie wishes to securely transact with. However, this protocol requires a classical authenticated channel between Bob and Charlie to prevent possible attacks from the third party Alice, which is in conflict with the task of certificate authorization in the sense that Bob and Charlie can establish an unconditionally-secure key by a quantum key distribution protocol if there is a classical authenticated channel between them and hence securely transact with each other even without the assistance of the third party Alice.

  2. The Streaming Complexity of Cycle Counting, Sorting by Reversals, and Other Problems

    DEFF Research Database (Denmark)

    Verbin, Elad; Yu, Wei

    2011-01-01

    : Alice gets a perfect matching EA on a set of n nodes, and Bob gets a perfect matching EB on the same set of nodes. The union EA [ EB is a collection of cycles, and the goal is to approximate the number of cycles in this collection. We prove that if Alice is allowed to send o(pn) bits to Bob (and Bob...... is not allowed to send anything to Alice), then the number of cycles cannot be approximated to within a factor of 1:999, even using a randomized protocol. We prove that it is not even possible to distinguish the case where all cycles are of length 4, from the case where all cycles are of length 8. This lower...

  3. Probabilistic Teleportation of an Unknown One-Particle State by a Three-Particle General W State

    Institute of Scientific and Technical Information of China (English)

    XIU Xiao-Ming; DONG Li; GAO Ya-Jun

    2007-01-01

    Two schemes for teleporting an unknown one-particle state are proposed when a general W state is utilized as quantum channel.In the first scheme,after the sender (Alice) makes a Bell-state measurement on her particles,the recipient (Bob) performs a Von Neumann measurement and introduces an auxiliary particle,and carries out a unitary transformation on his particle and the auxiliary particle,and performs a Von Neumann measurement on the auxiliary particle to confirm whether the teleportation succeeds or not.In the second scheme,the recipient (Bob) does not need to perform the first Von Neumann measurement or introduce the auxiliary particle,which is necessary in the first scheme.It is shown that the maximal probabilities of successful teleportation of the two schemes are identical if the recipient (Bob) performs an appropriate unitary transformation and adopts a proper particle on which he recovers the quantum information of state to be teleported.

  4. Environmental influences on Quantum Monty Hall problem

    CERN Document Server

    Khan, Salman; Khan, M K

    2010-01-01

    We reformulate the quantum Monty Hall problem in the presence of decoherence. The decoherence destroys the fairness of the game. A new Nash equilibrium for a particular strategy profile in the presence of decoherence emerges. It is shown that in the presence of decoherence under the action of amplitude damping channel, Bob's winning probability is always higher than three-forth, irrespective of Alice's strategy, if he does not switch to the other door and always wins for a fully decohered case of the channel. Depolarizing channel damps up Bob's winning probability and gets better off if he sticks to his current selection. Phase damping channel leaves the winning probability unaffected. Unlike the classical and the quantum forms of the game, Bob's dominant strategy in the presence of decoherence is not switching.

  5. One Is a Claim, Two Is a Defense: Bringing an End to the Equal Opportunity Harasser Defense

    Directory of Open Access Journals (Sweden)

    Mark J. McCullough

    2005-04-01

    Full Text Available Consider the following three workplace scenarios. Alice, a female employee at ABC corporation, has been subjected to almost continuous harassment by her immediate supervisor, Bob, for the past two months. Several times each week, Bob makes crude and sexually suggestive comments and, on numerous occasions, Bob has touched Alice inappropriately in the workplace. Assuming Alice attempts to remedy this situation in a reasonable time period and her employer has unreasonably failed “to prevent and correct promptly any sexually harassing behavior,” Alice will most likely be able to bring a hostile workplace sex discrimination claim against her employer for Bob’s sexual harassment under Title VII of the Civil Rights Act of 1964.3

  6. Improving the security of secure direct communication based on secret transmitting order of particles

    CERN Document Server

    Li, X H; Zhou, H Y; Li, Xi-Han; Deng, Fu-Guo; Zhou, Hong-Yu

    2006-01-01

    We analyzed the security of the secure direct communication protocol based on secret transmitting order of particles recently proposed by Zhu, Xia, Fan, and Zhang [Phys. Rev. A 73, 022338 (2006)], and found that this scheme is insecure if an eavesdropper, say Eve, wants to steal the secret message with Trojan horse attack strategies. The vital loophole in this scheme is that the two authorized users check the security of their quantum channel only once. Eve can insert another spy photon, an invisible photon or a delay one in each photon which the sender Alice sends to the receiver Bob, and capture the spy photon when it returns from Bob to Alice. After the authorized users check the security, Eve can obtain the secret message according to the information about the transmitting order published by Bob. Finally, we present a possible improvement of this protocol.

  7. The Onset of the Monsoon over the Bay of Bengal: The Observed Common Features for 2008-2011

    Institute of Scientific and Technical Information of China (English)

    YU Wei-Dong; SHI Jian-Wei; LIU Lin; LI Kui-Ping; LIU Yan-Liang; WANG Hui-Wu

    2012-01-01

    In situ buoy observation data spanning four years (2008-2011) were collected and used to perform a composite analysis of the monsoon onset process in the Bay of Bengal (BOB). The sea surface temperature (SST) in the central BoB increases dramatically during the monsoon transition period and reaches its annual maximum just before the onset of the monsoon. This process is illustrated by the northward-propagating deep convection phase of the intraseasonal oscillation and the establish- ment of a steady southwest wind. It is argued that the SST peak plays a potential role in triggering the onset of the monsoon in the BoB and its vicinity. The general picture of the BoB monsoon onset summarized here reveals the possibility of regional land-ocean-atmosphere interaction. This possibility deserves further examination.

  8. Interannual variation of tropical cyclone energy metrics over North Indian Ocean

    Science.gov (United States)

    Mohapatra, M.; Vijay Kumar, V.

    2016-05-01

    There is decreasing trend in the tropical cyclone (TC) number over the North Indian Ocean (NIO) in recent years, though there is increasing trend in the sea surface temperature (SST) which is one of the main environmental parameters for the development and intensification of TCs. Hence, a study has been performed to understand whether any trend exists in other TC parameters such as velocity flux (VF), accumulated cyclone energy (ACE) and power dissipation index (PDI). The interseasonal and interannual variations of VF, ACE and PDI for the NIO as a whole and Bay of Bengal (BOB) and Arabian Sea (AS) are analysed based on the data of 1990-2013 (24 years). Role of large scale features like El Nino southern oscillation (ENSO) and Indian Ocean dipole (IOD) have also been analyzed. The mean ACE per year for TCs [maximum sustained wind of 34 knots (kt) or more] over the NIO is about 13.1 × 104 kt2 including 9.5 × 104 kt2 over the BOB and 3.6 × 104 kt2 over the AS. The mean PDI per year for TCs over the NIO is about 10 × 106 kt3 including 3 × 106 kt3 over the AS and 7 × 106 kt3 over the BOB. The VF, ACE and PDI of TCs are significantly less over BOB during post-monsoon season (Oct.-Dec.) of El Nino years than in La Nina and normal years. The VF for TCs over the BOB during post-monsoon season is significantly less (higher) during positive (negative) IOD years. There is significant decreasing trend at 95 % level of confidence in ACE and PDI of TCs over AS during post-monsoon season and PDI over the BOB and NIO during pre-monsoon season mainly due to similar trend in average intensity of TCs and not due to trends in SST over Nino regions or IOD index.

  9. Common knowledge: Now you have it, now you don`t?

    Energy Technology Data Exchange (ETDEWEB)

    Fagin, R.; Halpern, J.Y. [IBM Almaden Research Center, San Jose, CA (United States); Moses, Y. [Weizmann Institute of Science, Rehovot (Israel); Vardi, M.Y. [Rice Univ., Houston, TX (United States)

    1996-12-31

    The notion of common knowledge, where everyone knows, everyone knows that everyone knows, etc., has proven to be fundamental in various disciplines, including Philosophy, Artificial Intelligence, Economics, and Psychology. This key notion was first studied by the philosopher David Lewis in the context of conventions. Lewis pointed out that in order for something to be a convention, it must in fact be common knowledge among the members of a group. (For example, the convention that green means {open_quotes}go{close_quotes} and red means {open_quotes}stop{close_quotes} is presumably common knowledge among the drivers in our society.) Common knowledge also arises in discourse understanding. Suppose Ann asks Bob {open_quotes}What did you think of the movie?{close_quotes} referring to a showing of Monkey Business they have just seen. Not only must Ann and Bob both know that {open_quotes}the movie{close_quotes} refers to Monkey Business, but Ann must know that Bob knows, Bob must know that Ann knows that Bob knows, and so on. In fact, by a closer analysis of this situation, it can be shown that there must be common knowledge of what movie is meant in order for Bob to answer the question appropriately. Finally, common knowledge also turns out to be a prerequisite for agreement and coordinated action in distributed systems. This is precisely what makes it such a crucial notion in the analysis of interacting groups of agents. On the other hand, in practical settings common knowledge is impossible to achieve. This puts us in a somewhat paradoxical situation, in that we claim both that common knowledge is a prerequisite for agreement and coordinated action and that it cannot be attained. We discuss two answers to this paradox: Modeling the world with a coarser granularity, and relaxing the requirements for coordination.

  10. Electrochemical Behaviors of Graphite in an Ethylene Carbonate-Based Electrolyte Containing Two Different Types of Film- Forming Additive

    Directory of Open Access Journals (Sweden)

    Sa Rang Yoon and Soon-Ki Jeong

    2016-04-01

    Full Text Available Electrochemical reactions occurring at a graphite electrode were investigated to gain insight into the effects of film-forming additives such as vinylene carbonate, fluoroethlyene carbonate (FEC and lithium bis(oxalato borate (LiBOB on surface film formation on the electrode. The surface film generated in the presence of a mixture of FEC and LiBOB was found to have the certain characteristics that are important in the initial charging and discharging process. The mixture produced a highly resistive film on the graphite electrode, resulting in an improvement in Coulombic efficiency.

  11. Teleportation of an arbitrary mixture of diagonal states of multiqudit

    International Nuclear Information System (INIS)

    This paper proposes a scheme to teleport an arbitrary mixture of diagonal states of multiqutrit via classical correlation and classical communication. To teleport an arbitrary mixture of diagonal states of N qutrits, N classically correlated pairs of two qutrits are used as channel. The sender (Alice) makes Fourier transform and conditional gate (i.e., XOR(3) gate) on her qutrits and does measurement in appropriate computation bases. Then she sends N ctrits to the receiver (Bob). Based on the received information, Bob performs the corresponding unitary transformation on his qutrits and obtains the teleported state. Teleportation of an arbitrary mixture of diagonal states of multiqudit is also discussed

  12. The pendulum wave machine

    Science.gov (United States)

    Zetie, K. P.

    2015-05-01

    There are many examples on the internet of videos of ‘pendulum wave machines’ and how to make them (for example, www.instructables.com/id/Wave-Pendulum/). The machine is simply a set of pendula of different lengths which, when viewed end on, produce wave-like patterns from the positions of the bobs. These patterns change with time, with new patterns emerging as the bobs change phase. In this article, the physics of the machine is explored and explained, along with tips on how to build such a device.

  13. Teleportation of an arbitrary mixture of diagonal states of multiqudit

    Institute of Scientific and Technical Information of China (English)

    Du Qian-Hua; Lin Xiu-Min; Chen Zhi-Hua; Lin Gong-Wei; Chen Li-Bo; Gu Yong-Jian

    2008-01-01

    This paper proposes a scheme to teleport an arbitrary mixture of diagonal states of multiqutrit via classical correlation and classical communication. To teleport an arbitrary mixture of diagonal states of N qutrits, N classically correlated pairs of two qutrits are used as channel. The sender (Alice) makes Fourier transform and conditional gate (i.e., XOR(3) gate) on her qutrits and does measurement in appropriate computation bases. Then she sends N ctrits to the receiver (Bob). Based on the received information, Bob performs the corresponding unitary transformation on his qutrits and obtains the teleported state. Teleportation of an arbitrary mixture of diagonal states of multiqudit is also discussed.

  14. Seasonal variability of salinity and salt transport in the northern Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    D’Addezio, J.M.; Subrahmanyam, B.; Nyadjro, E.S.; Murty, V.S.N.

    al., 2014). The NIO also shows a rich vertical salinity structure. Depth profiles along the 88°E section in the BoB (Sastry et al., 1985; Shetye et al., 1996) show a variety of complexities in temperature and salinity. With respect to salinity...-averaged salinity versus depth profiles. Finally, model simulations and reanalysis products are used to quantify meridional depth-integrated salt transports at the 6°N cross-section in both the AS and BoB. Many earlier intercomparison studies using reanalysis...

  15. Monsoon related changes in sea surface productivity and water column denitrification in the Eastern Arabian Sea during the last glacial cycle

    Digital Repository Service at National Institute of Oceanography (India)

    Banakar, V.K.; Oba, T.; Chodankar, A.R.; Kuramoto, T.; Yamamoto, M.; Minagawa, M.

    gradient developed with the decay of summer monsoons between the low-salinity southern region and the high-salinity northern region (Shetye et al., 1991), and is part of the WMC connecting the EAS to the BOB. Salinity of the BOB itself depends upon... powdered, decarbonised by leaching with 0.1 N HCl, and thoroughly washed sediment sections from 4 cm intervals were used to measure the C org and N, y 13 C org (vs. PDB) and y 15 N (vs. AIR) by the flow injection method using a Finnigan MAT-252 MS connected...

  16. Space-bounded communication complexity

    DEFF Research Database (Denmark)

    Brody, Joshua Eric; Chen, Shiteng; Papakonstantinou, Periklis A.;

    2013-01-01

    communicate his entire input. However, what if the players are limited in their ability to recall parts of their interaction? We introduce memory models for 2-party communication complexity. Our general model is as follows: two computationally unrestricted players, Alice and Bob, each have s(n) bits of memory...... controls two types of memory: (i) a large, oblivious memory, where updates are only a function of the received bit and the current memory content, and (ii) a smaller, non-oblivious/general memory, where updates can be a function of the input given to Bob. We exhibit natural protocols where this semi...

  17. Marketing Mix Analysis

    OpenAIRE

    Broukal, Radek

    2012-01-01

    This bachelor work descibes analysis of marketing mix used for cream „Bobík“ by Bohušovická mlékárna a.s. The work is divided into two part – research of available literature and practical part. In the first part is literature overview of marketing mix and tools of marketing mix, which are product, price, place, promotion. In the second section of this work are described each tools of marketing mix for the product „Bobík“, ...

  18. Probabilistic remote state preparation by W states

    Institute of Scientific and Technical Information of China (English)

    Liu Jin-Ming; Wang Yu-Zhu

    2004-01-01

    In this paper we consider a scheme for probabilistic remote state preparation of a general qubit by using W states. The scheme consists of the sender, Alice, and two remote receivers Bob and Carol. Alice performs a projective measurement on her qubit in the basis spanned by the state she wants to prepare and its orthocomplement. This allows either Bob or Carol to reconstruct the state with finite success probability. It is shown that for some special ensembles of qubits, the remote state preparation scheme requires only two classical bits, unlike the case in the scheme of quantum teleportation where three classical bits are needed.

  19. 英语木屋(英文)

    Institute of Scientific and Technical Information of China (English)

    乌鱼

    2006-01-01

    Bob was havingtrouble getting tosleepatnight.He went to seehisdoctor.He brought some ex-trastrong sleeping pillshome.Sunday night Bobtookthepills......trouble 麻烦sleeping pill 安眠药doctor 医生awake 醒来alarm 闹钟office 办公室So he slept well thatnight.英 语 木 屋Bob slept well andwas awake before heheardthealarm.He took his time get-tingtotheoffice...Thatisfine.Butwherewereyoumondayandtuesday?I did not havea bit of troublegetting up thismorning!绘 编 乌 鱼责任编辑 梁 为13英语木屋(英文)@乌鱼

  20. Probabilistic teleportation of an arbitrary GHZ-class state with a pure entangled two-particle quantum channel and its application in quantum state sharing

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    This paper presents a scheme for probabilistic teleportation of an arbitrary GHZ-class state with a pure entangled two-particle quantum channel. The sender Alice first teleports the coefficients of the unknown state to the receiver Bob, and then Bob reconstructs the state with an auxiliary particle and some unitary operations if the teleportation succeeds. This scheme has the advantage of transmitting much less particles for teleporting an arbitrary GHZ-class state than others. Moreover, it discusses the application of this scheme in quantum state sharing.

  1. Actively Secure Two-Party Evaluation of Any Quantum Operation

    DEFF Research Database (Denmark)

    Dupuis, Frédéric; Nielsen, Jesper Buus; Salvail, Louis

    2012-01-01

    We provide the first two-party protocol allowing Alice and Bob to evaluate privately even against active adversaries any completely positive, trace-preserving map , given as a quantum circuit, upon their joint quantum input state . Our protocol leaks no more to any active adversary than an ideal ...... functionality for provided Alice and Bob have the cryptographic resources for active secure two-party classical computation. Our protocol is constructed from the protocol for the same task secure against specious adversaries presented in [4]....

  2. Certifying entangled measurements in a device-independent way

    CERN Document Server

    Vertesi, Tamas

    2011-01-01

    We study under which conditions it is possible to assert that a joint demolition measurement cannot be simulated by Local Operations and Classical Communication. More concretely, we consider a scenario where two parties, Alice and Bob, send each an unknown state to a third party, Charlie, who in turn interacts with the states in some undisclosed way and then announces an outcome. We show that, under the assumption that Alice and Bob know the dimensionality of their systems, there exist situations where the statistics of the outcomes reveals the nature of Charlie's measurement.

  3. Teleportation of N-Particle Entangled GHZ State via Entanglement Swapping

    Institute of Scientific and Technical Information of China (English)

    SHA Jin-Qiao; FANG Jian-Xing; ZHU Shi-Qun; JIANG Wei-Xing; QIAN Xue-Min

    2006-01-01

    In this scheme, N non-maximally entangled particle pairs are used as quantum channel to teleport an unknown N-particle entangled GHZ state via entanglement swapping. In order to realize this teleportation, the sender Alice operates Bell-state measurement on particles belonging to herself. Then she informs the results to the receiver Bob through classical communication. According to the results, Bob operates corresponding transformation to reconstruct the initial state. The advantage of this scheme is that it needs only one common unitary matrix for Alice's different results, which has a more general meaning. As a special case, teleporting an unknown three-particle entangled GHZ state is proposed.

  4. An efficient quantum secret sharing protocol with orthogonal product states

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    An efficient quantum secret sharing protocol with orthogonal product states in the 33 Hilbert space is presented. The particles in the orthogonal product states form two particle sequences. One sequence is sent to Bob and the other is sent to Charlie after rearranging the particle orders. With the help of Alice, Bob and Charlie make the corresponding local measurement to obtain the information of the or- thogonal product states prepared. This protocol has many distinct features such as great capacity and high efficiency.

  5. An upper bound on the second order asymptotic expansion for the quantum communication cost of state redistribution

    Science.gov (United States)

    Datta, Nilanjana; Hsieh, Min-Hsiu; Oppenheim, Jonathan

    2016-05-01

    State redistribution is the protocol in which given an arbitrary tripartite quantum state, with two of the subsystems initially being with Alice and one being with Bob, the goal is for Alice to send one of her subsystems to Bob, possibly with the help of prior shared entanglement. We derive an upper bound on the second order asymptotic expansion for the quantum communication cost of achieving state redistribution with a given finite accuracy. In proving our result, we also obtain an upper bound on the quantum communication cost of this protocol in the one-shot setting, by using the protocol of coherent state merging as a primitive.

  6. A Reversible Processor Architecture and its Reversible Logic Design

    DEFF Research Database (Denmark)

    Thomsen, Michael Kirkedal; Axelsen, Holger Bock; Glück, Robert

    2012-01-01

    We describe the design of a purely reversible computing architecture, Bob, and its instruction set, BobISA. The special features of the design include a simple, yet expressive, locally-invertible instruction set, and fully reversible control logic and address calculation. We have designed...... an architecture with an ISA that is expressive enough to serve as the target for a compiler from a high-level structured reversible programming language. All-in-all, this paper demonstrates that the design of a complete reversible computing architecture is possible and can serve as the core of a programmable...

  7. Chemical characteristics of aerosols in MABL of Bay of Bengal and Arabian Sea during spring inter-monsoon: A comparative study

    Indian Academy of Sciences (India)

    Ashwini Kumar; A K Sudheer; M M Sarin

    2008-07-01

    The chemical composition of aerosols in the Marine Atmospheric Boundary Layer (MABL) of Bay of Bengal (BoB) and Arabian Sea (AS) has been studied during the spring and inter-monsoon (March–May 2006) based on the analysis of water soluble constituents (Na+, NH$^{+}_{4}$, K+, Mg2+, Ca2+, Cl−, NO$^{−}_{3}$ and SO$^{2−}_{4}$), crustal elements (Al, Fe, and Ca) and carbonaceous species (EC, OC). The total suspended particulates (TSP) ranged from 5.2 to 46.6 g m−3 and 8.2 to 46.9 g m−3 during the sampling transects in the BoB and AS respectively. The water-soluble species, on average, accounted for 44% and 33% of TSP over BoB and AS respectively, with dominant contribution of SO$^{2−}_{4}$ over both the oceanic regions. However, distinct differences with respect to elevated abundances of NH$^{+}_{4}$ in the MABL of BoB and that of Na+ and Ca2+ in AS are clearly evident. The non-sea-salt component of SO$^{2−}_{4}$ ranging from 82 to 98% over BoB and 35 to 98% over AS; together with nss-Ca2+/nss-$SO^{2−}_{4}$ equivalent ratios 0.12 to 0.5 and 0.2 to 1.16, respectively, provide evidence for the predominance of anthropogenic constituents and chemical transformation processes occurring within MABL. The concentrations of OC and EC average around 1.9 and 0.4 g m−3 in BoB and exhibit a decreasing trend from north to south; however, abundance of these carbonaceous species are not significantly pronounced over AS. The abundance of Al, used as a proxy for mineral aerosols, varied from 0.2 to 1.9 g m−3 over BoB and AS, with a distinctly different spatial pattern – decreasing north to south in BoB in contrast to an increasing pattern in the Arabian Sea.

  8. Distributed Oblivious Function Evaluation and Its Applications

    Institute of Scientific and Technical Information of China (English)

    Hong-Da Li; Xiong Yang; Deng-Guo Feng; Bao Li

    2004-01-01

    This paper is about distributed oblivious function evaluation (DOFE). In this setting one party (Alice) has a function f(x), and the other party (Bob) with an input α wants to learn f(α) in an oblivious way with the help of a set of servers. What Alice should do is to share her secret function f(x) among the servers. Bob obtains what he should get by interacting with the servers. This paper proposes the model and security requirements for DOFE and analyzes three distributed oblivious polynomial evaluation protocols presented in the paper.

  9. Role of eddies in the Bay of Bengal circulation and hydrography and in the distribution of nutrients and chlorophyll

    Digital Repository Service at National Institute of Oceanography (India)

    Murukesh, N.

    . J. Atmos. Oceanic Technol., 16, 1208-1223. Levitus, S., R. Burgett, and T. Boyer, 1994, World Ocean Atlas 1994.Vol 3, Salinity; Vol. 4, Temperature, NOAA Atlas NESDIS 3, 4,U.S. Dept. of Commerce, 117pp & 99pp Lutjeharms, J.R.E., (2006... as well as remote sensing. The in situ data includes temperature and salinity profiles measured using CTD at 1-degree from 7 o N to 20 o N along the central BOB (88 o E) transect and from 11 o N to 20 o N along the western BOB, in the upper 1000 m...

  10. Surface freshwater from Bay of Bengal runoff and Indonesian throughflow in the tropical Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    Sengupta, D.; Raj, B.; Shenoi, S.S.C.

    et al. [2005]). In addition to the western pathway in winter iden- tified from observations (Donguy and Meyers [1996]; Rao and Sivakumar [2003]), model simulations (e.g. Han et al. [2001]) and experiments using tracers/drifters suggest that BoB water... and impact of BoB freshwater. The use of upper ocean salinity observations to study the movement of freshwater is problematic because salin- ity is influenced by seasonally varying rain (P) and evap- oration (E) (Donguy and Meyers [1996]; Rao and Sivaku- mar...

  11. Obituary: Ralph Robert Robbins, Jr., 1938-2005

    Science.gov (United States)

    Hemenway, Mary Kay; Jefferys, William H.; Lambert, David L.

    2007-12-01

    Ralph Robert Robbins, Jr., died on 2 December 2005, in Kyle, Texas. His wife, Maria Elena Robbins, his daughters Julia Robbins Kelso and Stephanie Juarez Balles, his son Matthew Juarez, and five grandchildren survive him. Bob was on the faculty at the University of Texas from 1968 until his retirement in 2003. Bob was born in Wichita, Kansas, on 2 September 1938, the only son of Mildred and Ralph Robert Robbins, Sr. Guided by his high school's policy to provide a practical education to children of working-class parents, Bob began high school with a heavy dose of vocational courses until the results of a test indicated his special talent in mathematics. He was awarded a full scholarship to Yale University, graduating magna cum laude in mathematics in 1960. He won the Warner Prize in Mathematics at Yale that year. He received his Ph.D. in 1966 with a dissertation entitled "The Triplet Spectrum of Neutral Helium in Expanding Nebulae" from the University of California at Berkeley. His interest in college teaching was ignited at this time through summer teaching positions at San Mateo California Junior College and the Ohio State University. Following a year at Texas as a McDonald Observatory Post-doctoral Fellow, Bob taught for a year in the physics department of the University of Houston before returning to the University of Texas at Austin as an Assistant Professor of Astronomy in 1968. He was promoted to Associate Professor in 1972. Bob's research in the early 1970s on theoretical studies of helium was of vital importance to astronomers for over three decades. These pioneering calculations became vital to observational astronomers in the mid-1990s as interest grew in the primordial helium produced by the Big Bang. Bob's interest and influence in education was international in scope. In the summers 1968-1970, he was a government consultant in Mathematics in East Pakistan (now Bangladesh). He consulted with the government that was preparing a master plan for technical

  12. Solution of Peter Winkler's Pizza Problem

    OpenAIRE

    Cibulka, Josef; Kynčl, Jan; Mészáros, Viola; Stolař, Rudolf; Valtr, Pavel

    2008-01-01

    Bob cuts a pizza into slices of not necessarily equal size and shares it with Alice by alternately taking turns. One slice is taken in each turn. The first turn is Alice's. She may choose any of the slices. In all other turns only those slices can be chosen that have a neighbor slice already eaten. We prove a conjecture of Peter Winkler by showing that Alice has a strategy for obtaining 4/9 of the pizza. This is best possible, that is, there is a cutting and a strategy for Bob to get 5/9 of t...

  13. Improving the security of multiparty quantum secret sharing against Trojan horse attack

    OpenAIRE

    Deng, Fu-Guo; Li, Xi-Han; Zhou, Hong-Yu; Zhang, Zhan-jun

    2005-01-01

    We analyzed the security of the multiparty quantum secret sharing (MQSS) protocol recently proposed by Zhang, Li and Man [Phys. Rev. A \\textbf{71}, 044301 (2005)] and found that this protocol is secure for any other eavesdropper except for the agent Bob who prepares the quantum signals as he can attack the quantum communication with a Trojan horse. That is, Bob replaces the single-photon signal with a multi-photon one and the other agent Charlie cannot find this cheating as she does not measu...

  14. Aiming at Targets: The Autobiography of Robert C. Seamans, Jr.

    Science.gov (United States)

    Seamans, Robert C., Jr.

    1996-01-01

    Bob Seamans originally was inspired to write this book for his family and friends. That is a large audience. By his own count his immediate family numbers twenty-four, not counting brothers and cousins and their families. His friends are uncounted but surely run to hundreds. As one of them and as a colleague at NASA, I am pleased and honored that he asked me to write this foreword. While written in Bob's unique and informal style, this autobiography has significance for many readers beyond his large circles of family and friends. Leaders and students of large, complex technological endeavors should be able to learn much from reading how Bob faced the daunting technical and management challenges in his career. As the title of this book implies, Bob has always set high goals for himself and then kept his eyes focused on both the necessary details and the broader picture. His ability to shift smoothly among jobs that required seemingly disparate abilities and skills speaks volumes about his insight, dedication, and enthusiasm for achievement. The book spans a truly remarkable life story. Bob first takes us through his growing up, education, and early professional and family life. Next he focuses on the crucial years when he was the general manager of NASA. Then he moves on to his career in the top jobs at the Air Force, the National Academy of Engineering, and the Energy Research and Development Administration. Finally, he touches on his later leadership activities in the academic and business worlds. Aiming at Targets is a series of fascinating topical vignettes covering his professional life. Taken together, like broad brushstrokes in an impressionist painting, they give a better picture of Bob Seamans and his work than a detailed recitation of facts and dates could hope to do. This is a cheerful account of an interesting and successful career. The book is full of good stories, with many memorable characters. Like the proverbial sundial, it counts the sunny hours

  15. 半色银样

    Institute of Scientific and Technical Information of China (English)

    VINCENT

    2009-01-01

    说到底,这已经不是什么新鲜事了,PF Flyers Bob Cousy All American早前已复刻过全绿,全黑及卡其色版本,都是40年代法裔篮球运动员Bob Cousy的专用球鞋。相比较上市之初遭到众人围抢的绿色版本,这款银色的追加版本却有着截然不同的风格。

  16. Analysis of Pendulum Period with an iPod Touch/iPhone

    Science.gov (United States)

    Briggle, Justin

    2013-01-01

    We describe the use of Apple's iPod touch/iPhone, acting as the pendulum bob, as a means of measuring pendulum period, making use of the device's three-axis digital accelerometer and the freely available SPARKvue app from PASCO scientific. The method can be readily incorporated into an introductory physics laboratory experiment.…

  17. The interlock protocol cannot save quantum cryptography from man-in-the-middle attacks

    CERN Document Server

    Svozil, K

    2005-01-01

    The feasibility of the interlock protocol to prevent against man-in-the-middle attacks on quantum cryptography is discussed. If an eavesdropper succeeds to compromise the quantum as well as the classical channels and mimicks the receiver "Bob" for the sender "Alice" and vice versa, one defense strategy not requiring authentication is the successive, temporally interlocked partial transmission of the entire encrypted message.

  18. The Man-in-the-Middle Defence

    Science.gov (United States)

    Anderson, Ross

    The man-in-the-middle defence is all about rehabilitating Charlie. For 20 years we’ve worried about this guy in the middle, Charlie, who’s forever intercalating himself into the communications between Alice and Bob, and people have been very judgemental about poor Charlie, saying that Charlie is a wicked person. Well, we’re not entirely convinced.

  19. Feasibility of the interlock protocol against man-in-the-middle attacks on quantum cryptography

    OpenAIRE

    Svozil, Karl

    2005-01-01

    If an eavesdropper succeeds in compromising the quantum as well as the classical channels and mimics the receiver "Bob" for the sender "Alice" and vice versa, one defence strategy is the successive, temporally interlocked partial transmission of the entire encrypted message.

  20. Implement the Rae Report!

    Science.gov (United States)

    Lowy, Frederick

    2005-01-01

    The February 7, 2005 report by the Honorable Bob Rae--"Ontario: A Leader in Learning"--focused national attention, at least fleetingly, on a matter of prime importance to Canada's future: vulnerable state of higher education in this country, a subject that has, unfortunately, largely escaped serious public discussion. Although Mr. Rae, a former…

  1. У "Бездомного Боба" будет свой "Идиот" / Катрин Кисса и Райнер Сарнет ; интервьюировал Борис Тух

    Index Scriptorium Estoniae

    Кисса, Катрин, 1977-

    2010-01-01

    Režissöör Rainer Sarnet teeb filmi F. Dostojevski romaani "Idioot" ainetel. Režissöör, produtsent ning filmistuudio Homeless Bob Production juht Katrin Kissa ja näitleja Tiina Tauraite räägivad filmist

  2. Energy Consumption Model and Measurement Results for Network Coding-enabled IEEE 802.11 Meshed Wireless Networks

    DEFF Research Database (Denmark)

    Paramanathan, Achuthan; Rasmussen, Ulrik Wilken; Hundebøll, Martin;

    2012-01-01

    This paper presents an energy model and energy measurements for network coding enabled wireless meshed networks based on IEEE 802.11 technology. The energy model and the energy measurement testbed is limited to a simple Alice and Bob scenario. For this toy scenario we compare the energy usages...

  3. Hofstra's Ambitions Confront the Economy

    Science.gov (United States)

    Selingo, Jeffrey J.

    2009-01-01

    Last October, when CBS News's Bob Schieffer welcomed 57 million television viewers to Hofstra University for the third presidential debate, the moment marked perhaps the best chance yet for the university to show off its efforts--with the help of some 4,000 journalists to cover the event--to remake itself from a sleepy commuter campus into a…

  4. Pop / Mart Kalvet

    Index Scriptorium Estoniae

    Kalvet, Mart, 1975-

    2007-01-01

    Heliplaatidest: Queens Of The Stone Age "Era Vulgaris", Bob Marley & The Wailers "Exodus: 30th Anniversary Edition", Sophie Ellis Bextor "Trip The Light Fantastic", The Police "The Police", Armand Van Helden "Ghettoblaster", Rihanna "Good Girl Gone Bad", Tiit Kikas "String Theory", Ryan Adams "Easy Tiger"

  5. Touching Ghosts: Observing Free Fall from an Infalling Frame of Reference into a Schwarzschild Black Hole

    Science.gov (United States)

    Augousti, A. T.; Gawelczyk, M.; Siwek, A.; Radosz, A.

    2012-01-01

    The problem of communication between observers in the vicinity of a black hole in a Schwarzschild metric is considered. The classic example of an infalling observer Alice and a static distant mother station (MS) is extended to include a second infalling observer Bob, who follows Alice in falling towards the event horizon. Kruskal coordinates are…

  6. Development of a physiologically based pharmacokinetic model for flunixin in cattle (Bos taurus)

    Science.gov (United States)

    Violative residues of flunixin in tissues from bob veal calves and cull dairy cows has been attributed to noncompliance with the FDA-approved route of administration and withdrawal time, however, the effect of administration route and physiological differences among animals on tissue residue depleti...

  7. Teleportation of Unknown Atomic Entangled States Using GHZ Class States

    International Nuclear Information System (INIS)

    We propose two physical schemes, which can teleport unknown atomic entangled states from user A (Alice) to user B (Bob) via GHZ class states as quantum channel. The two schemes are both based on cavity QED techniques. In the two schemes, teleportation and distillation procedures can be realized simultaneously. The second teleportation scheme is more advantageous than the first one.

  8. Teleportation in the Background of Schwarzschild Space-time

    OpenAIRE

    Ge, Xian-Hui; Shen, You-Gen

    2005-01-01

    Quantum teleportation is investigated between Alice who is far from the horizon and Bob locates near the event horizon of a Schwarzschild black hole. The results show that the fidelity of the teleportation is reduced in this curved space-time. However, high fidelity can still be reached outside a massive black hole.

  9. Ombuds' Corner: A section leader on a limited-duration contract

    CERN Multimedia

    Vincent Vuillemin

    2011-01-01

    In this series, the Bulletin aims to explain the role of the Ombuds at CERN by presenting practical examples of misunderstandings that could have been resolved by the Ombuds if he had been contacted earlier. Please note that, in all the situations we present, the names are fictitious and used only to improve clarity.   Bob* has been working at CERN for almost four years on a limited-duration contract. Due to the early retirement of one of his colleagues, he was appointed Section Leader very early in his career, as he was the only one who was able to replace this person. As Section Leader, Bob had to provide annual assessments for several staff members, which he did in a very honest and balanced way. When staff members were given their results from the MARS exercise, George – one of Bob’s supervisees – accused Bob of not giving him the promotion he deserved. George had been expecting his MARS appraisal to include work that he claims Bob, being under a limited-durati...

  10. AERA Vocational Education Special Interest Group Proceedings (San Diego, California, April 13-17, 1998).

    Science.gov (United States)

    Jackman, Diane H., Ed.

    This document contains six research papers: "Articulation Practices among Secondary and Postsecondary Vocational-Technical Education Programs" (Bob R. Stewart, Sandra Eckert-Stewart); "What Message Are We Sending to Counselors about Their Role in Tech Prep?" (Paula Puckett); "From School-to-Work: Secretaries' and Machinists' Representations of…

  11. Assisted Cycling Tours

    Science.gov (United States)

    Hollingsworth, Jan Carter

    2008-01-01

    This article discusses Assisted Cycling Tours (ACT), a Westminster, Colorado based 501(c)3, non-profit that is offering the joy of bicycle tours in breathtaking, scenic locations to children and adults with developmental and physical disabilities and their families. ACT was founded by Bob Matter and his son David with a goal of opening up the…

  12. Book Review: Comparative Education Research: Approaches and Methods

    Directory of Open Access Journals (Sweden)

    Noel Mcginn

    2014-10-01

    Full Text Available Book Review Comparative Education Research: Approaches and Methods (2nd edition By Mark Bray, Bob Adamson and Mark Mason (Eds. (2014, 453p ISBN: 978-988-17852-8-2, Hong Kong: Comparative Education Research Centre and Springer

  13. Monastic Musings

    Institute of Scientific and Technical Information of China (English)

    Francisco; Little

    2015-01-01

    My eyes kept being drawn to the cartoon cutout characters on the bobbing bus ceiling. Mickey Mouse and Pluto werepasted in between metallic paper roses, hearts and butterflies. It all seemed incongruous hovering over an eclectic collection of rural pas- sengers, jabbering in a jarring dialect, crammed into a bus chugging its way into the mountains high above Xining.

  14. Corrigendum

    Directory of Open Access Journals (Sweden)

    2016-05-01

    Full Text Available Tracy TL Cheung, Floor M Kroese, Bob M Fennis and Denise TD De Ridder Put a limit on it: The protective effects of scarcity heuristics when self-control is low. 2015; Vol. 2(2 1–11 (DOI: 10.1177/2055102915615046

  15. Do cold, low salinity waters pass through the Indo-Sri Lanka Channel during winter?

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, R.R.; Girishkumar, M.S.; Ravichandran, M.; Gopalakrishna, V.V.; Pankajakshan, T.

    cooler, low-salinity waters from the head Bay of Bengal (BoB) into the south-eastern AS. But due to a lack of any direct in situ measurements, it is not clear whether any part of this current that flows through the Indo-Sri Lanka Channel (ISLC...

  16. Rohkem tolerantsi / Lauri Kärk

    Index Scriptorium Estoniae

    Kärk, Lauri, 1954-

    2003-01-01

    Berliini 53. filmifestival avati USA muusikaliga "Chicago", mis valmis Rob Marshalli käe all John Kanderi, Fred Ebbi ja Bob Fosse muusikali järgi. Festivali juht Dieter Kosslick rõhutab loosungit "Towards Tolerance", mis olevatki festivali kava alusmõtteks

  17. Sõltumatud suurused / Märt Milter

    Index Scriptorium Estoniae

    Milter, Märt

    1999-01-01

    Uute heliuplaatide Beulah "When Your Heartstrings Break", Wisdom Of Harry "Stars Of Super 8", Bardo Pont "Set And Setting", Manatee "Easy", Whispering Bob "Don"t Bring Me Down", Dustball "Like Monkeys Do", Calc "Not Involved", Ronnie Spector "She Talks To Rainbows EP" Everything But The Girl "Five Fathoms", GusGus "This Is Normal", Groove Armada "Vertigo", "DJ-Kicks" tutvustus

  18. High performance optical encryption based on computational ghost imaging with QR code and compressive sensing technique

    Science.gov (United States)

    Zhao, Shengmei; Wang, Le; Liang, Wenqiang; Cheng, Weiwen; Gong, Longyan

    2015-10-01

    In this paper, we propose a high performance optical encryption (OE) scheme based on computational ghost imaging (GI) with QR code and compressive sensing (CS) technique, named QR-CGI-OE scheme. N random phase screens, generated by Alice, is a secret key and be shared with its authorized user, Bob. The information is first encoded by Alice with QR code, and the QR-coded image is then encrypted with the aid of computational ghost imaging optical system. Here, measurement results from the GI optical system's bucket detector are the encrypted information and be transmitted to Bob. With the key, Bob decrypts the encrypted information to obtain the QR-coded image with GI and CS techniques, and further recovers the information by QR decoding. The experimental and numerical simulated results show that the authorized users can recover completely the original image, whereas the eavesdroppers can not acquire any information about the image even the eavesdropping ratio (ER) is up to 60% at the given measurement times. For the proposed scheme, the number of bits sent from Alice to Bob are reduced considerably and the robustness is enhanced significantly. Meantime, the measurement times in GI system is reduced and the quality of the reconstructed QR-coded image is improved.

  19. Instructor Revs Up Ailing Motorcycle Program

    Science.gov (United States)

    Stevenson, Roy

    2011-01-01

    Bob Monroig smiles every day on his way to work at Lake Washington Technical College (LWTC), high atop a hill overlooking the affluent Seattle suburb of Kirkland, Washington. He's created his own job within a job, where he's the Harley-Davidson University program coordinator and tenured faculty in the Motorcycle, Marine, & Power Equipment Service…

  20. Bio pics

    DEFF Research Database (Denmark)

    Nielsen, Jakob Isak

    2011-01-01

    Martin Zandvliets Dirch (2011) har ansporet til at skitsere den biografiske film som genre og knytte nogle kommentarer til dens forskellige udtryksmuligheder. Hovedeksemplerne er Walk the Line (2005) og I’m Not There (2007) om henholdsvis Johnny Cash og Bob Dylan....

  1. Putting Big Data to Work: Community Colleges Use Detailed Reports to Design Smarter Workforce Training and Education Programs

    Science.gov (United States)

    Woods, Bob

    2013-01-01

    In this article, Bob Woods reports that "Big data" is all the rage on college campuses, and it makes sense that administrators would use what they know to boost student outcomes. Woods points out that community colleges around the country are using the data: (1) to guide the systematic expansion of its curriculum, providing targeted…

  2. Security in quantum

    Science.gov (United States)

    RKS

    2016-06-01

    In reply to the physicsworld.com news article “Alice and Bob have their quantum fingerprints checked” (23 March, http://ow.ly/ZQQjB), which described a technique that minimizes the amount of information that must be transferred between two computers to solve a problem.

  3. Filmikurioosumid : Kõige, kõige, kõige filmid : Zorrod läbi aegade / Aare Ermel

    Index Scriptorium Estoniae

    Ermel, Aare, 1957-2013

    2002-01-01

    1919. aastal ilmunud Johnston McCulley jutustus "Capistrano needus" pani aluse lugematutele vaeste eest maskis ja pimeduse varjus kättemaksva Zorro lugudele trükisõnas ja kinolinal. Samast tüvest on pärit ka Batmani (looja Bob Kane) ja Supermani lood

  4. Popmuusika / Valner Valme

    Index Scriptorium Estoniae

    Valme, Valner, 1970-

    2005-01-01

    Uutest heliplaatidest Beta Band "The Best Of", Nickelback "All The Night Reasons", Alanis Morissette "Jagged Little Pill", Bob Dylan "No Direction", Ricky Martin "Life", KTU "8 Armed Monkey", Alicia Keys "Unplugged", John Cale "Black Acetate", Blockhead "Downtown", David Gray "Life in Slow", Eric Clapton "Back Home"

  5. Imagine a Dream of Love, Ripple

    Science.gov (United States)

    Witt, Jerry A. (Tony)

    2014-03-01

    MATH 1st, Mc2 /r2 = E / r = 2 / . 5 = 1 music and some of the hearts that have guided this path. John, Dr. King, Bob, favorite Grateful Dead song. Family, friends, kids (friends), 9083L strength fare treatment for labor being self respect.

  6. EGEE helping bridge digital divide EGEE'06 Conference preview

    CERN Multimedia

    2006-01-01

    "In this GRIDtoday Q&A, EGEE project director Bob Jones discusses where EGEEE began and where it is now as the project enters the EGEE II era. In addition, Jones previews the EGEE'06 conference, which kicks off Sept. 25 in Geneva, Switzerland, and features for the first time a prominent businee track." (2 pages)

  7. The Independent School Admissions Director as Tim Wakefield's Catcher

    Science.gov (United States)

    Vachow, Mike

    2012-01-01

    Bob Uecker, the Milwaukee Brewers' quipping radio broadcaster, makes his brief and lackluster career as a major league catcher the subject of much of his humor. About catching the knuckleball, Uecker famously said, "I always thought the knuckleball was the easiest pitch to catch." Of course, there is an even better way to catch a knuckleball, and…

  8. 76 FR 24523 - Sun & Lake Pharmacy, Inc.; D/B/A the Medicine Shoppe; Revocation of Registration

    Science.gov (United States)

    2011-05-02

    ... (quoting Bob's Pharmacy & Diabetic Supplies, 74 FR 19599, 19601 (2009); United Prescriptions Servs., Inc., 72 FR 50397, 50408 (2007)). Moreover, the ALJ also cited Agency precedent that, under the CSA, ``a... the Internet, 66 FR 21181 (2001), which explained four widely accepted elements for establishing...

  9. ENSO-Modulated Cyclogenesis over the Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Felton, C.S.; Subrahmanyam, B.; Murty, V.S.N.

    . Low vertical wind shear over the central and northern BoB also aids in the development of tropical cyclones during La Niña events. Increased relative humidity is the result of enhanced moisture transport and higher precipitable water under La Niña...

  10. The effect of semi-permanent eddies on the distribution of mesozooplankton in the central Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Fernandes, V.

    Five locations in the central Bay of Bengal (BoB) along a longitudinal transect at 88E were sampled during the Fall Intermonsoon, 2002 for mesozooplankton biomass, abundance, groups and copepod species composition. Stations at 9N and 18N had...

  11. Privacy-Enhanced Methods for Comparing Compressed DNA Sequences

    CERN Document Server

    Eppstein, David; Baldi, Pierre

    2011-01-01

    In this paper, we study methods for improving the efficiency and privacy of compressed DNA sequence comparison computations, under various querying scenarios. For instance, one scenario involves a querier, Bob, who wants to test if his DNA string, $Q$, is close to a DNA string, $Y$, owned by a data owner, Alice, but Bob does not want to reveal $Q$ to Alice and Alice is willing to reveal $Y$ to Bob \\emph{only if} it is close to $Q$. We describe a privacy-enhanced method for comparing two compressed DNA sequences, which can be used to achieve the goals of such a scenario. Our method involves a reduction to set differencing, and we describe a privacy-enhanced protocol for set differencing that achieves absolute privacy for Bob (in the information theoretic sense), and a quantifiable degree of privacy protection for Alice. One of the important features of our protocols, which makes them ideally suited to privacy-enhanced DNA sequence comparison problems, is that the communication complexity of our solutions is pr...

  12. How customer satisfaction can influence clinical outcome in a back specialty clinic.

    Science.gov (United States)

    Reznik, B

    1994-01-01

    Determining what defines quality is the aim of the study produced at the Texas Back Institute. Bob Reznik, M.B.A., vice president of the institute, presents a methodology for measuring the outcomes of clinical care and relating it to physician performance on a variety of levels. PMID:10131360

  13. On the Responsible Use of Communication Media for Learning

    Science.gov (United States)

    Yeaman, Andrew R. J.

    2009-01-01

    Just as Bob Heinich states that technology makes instruction visible (1970, 1971), putting the professional ethics into practice makes technology visible. The window for social insight into teachers' professional field is open to a particular view at the present. There are learner questions surrounding the use of media which need answering and…

  14. The Gold Medal Fitness Program: A Model for Teacher Change

    Science.gov (United States)

    Wright, Jan; Konza, Deslea; Hearne, Doug; Okely, Tony

    2008-01-01

    Background: Following the 2000 Sydney Olympics, the NSW Premier, Mr Bob Carr, launched a school-based initiative in NSW government primary schools called the "Gold Medal Fitness Program" to encourage children to be fitter and more active. The Program was introduced into schools through a model of professional development, "Quality Teaching and…

  15. Building a Culinary Arts Academy

    Science.gov (United States)

    Brown, Robert L.

    2005-01-01

    When Judy Karen Brown (the 2004 Alabama Family and Consumer Sciences Teacher of the Year) arrived at Bob Jones High School (BJHS) in Madison, Alabama, in the summer of 1999, she immediately identified a need to build both student and community interests in family and consumer sciences (FACS). She noticed the student and faculty interest in the…

  16. How Entertainment Media Aid Learning about the Natural World

    Science.gov (United States)

    Pathmanathan, Sai

    2014-01-01

    Young people can be motivated to learn science using the power of various entertainment media. The author states the need to recognise that they are accessing science through informal learning outside school. With children saying they have learnt from cartoons such as Nickelodeon's SpongeBob SquarePants, it would seem that entertaining…

  17. Balancing the books

    OpenAIRE

    Foster, Allen

    2007-01-01

    Technically the US Food and Drug Administration goes out of business at the end of September, when legislation authorising it expires. The US Congress is working on a new law to address some of the controversies that have dogged the agency in recent years. FDA commissioner Andrew von Eschenbach talks to Bob Roehr

  18. Androgyny and Sex Role Perception in Television Situation Comedies.

    Science.gov (United States)

    Whetmore, Edward Jay

    The interrelationships among perceived sex role of self, sex roles of parents and friends, and sex roles of television-situation-comedy characters were investigated by this study. Individual preferences for characters in four TV programs--"All in the Family,""Rhoda,""Mary Tyler Moore," and "The Bob Newhart Show"--were also assessed. Seventy Lewis…

  19. Complete insecurity of quantum protocols for classical two-party computation

    NARCIS (Netherlands)

    H. Buhrman; M. Christandl; C. Schaffner

    2012-01-01

    A fundamental task in modern cryptography is the joint computation of a function which has two inputs, one from Alice and one from Bob, such that neither of the two can learn more about the other’s input than what is implied by the value of the function. In this Letter, we show that any quantum prot

  20. Klassitsheski geroi dlja novõhh vremjon / Ilja Svensson

    Index Scriptorium Estoniae

    Svensson, Ilja

    2005-01-01

    Koomiksipõhine seiklusfilm "Batman alustab" ("Batman Begins") : režissöör Christopher Nolan : nimiosas Christian Bale : Ameerika Ühendriigid 2005. Ka Bob Kane'i ja Bill Fingeri loodud koomiksikangelase sünnist ja eelnevatest ekraniseeringutest

  1. Plaadid / Toomas Puna

    Index Scriptorium Estoniae

    Puna, Toomas, 1975-

    2007-01-01

    Uutest heliplaatidest Armand Van Helden "Ghettoblaster", Queens of the Stone Age "ERA Vulgaris", Tuberkuloited "Mis sa teed", Zeb "Stop the Earth, I Want to Get Off", Frankie Valentine "The World of What", Ryan Adams "Easy Tiger", Bob Sinclar "Soundz of Freedom"

  2. Editorial: The times they are A-Changin

    NARCIS (Netherlands)

    W. Harcourt (Wendy)

    2012-01-01

    textabstractThe famous1963 song by Bob Dylan The Times They Are A-Changing rings true in the year 2011. As in the1960s, there are young and old people on the streets demanding change to the economic system, an end of war, climate justice, women’s rights, gender equity and true democracy. The year ha

  3. Historical Analysis of College Campus Interracial Dating

    Science.gov (United States)

    Firmin, Michael W.; Firebaugh, Stephanie

    2008-01-01

    Interracial dating on American campuses has had a relatively stormy past. Until the past three decades or so, it was outlawed in some states. Southern institutions, in particular, such as the infamous Bob Jones University have made this issue divisive even among their own constituencies. Age and generation seem to be cogent factors with younger…

  4. Detsibill : D.I.Y. - Do it yourself. White label : DJ Critical. Kuula / DJ Pickney Tiger

    Index Scriptorium Estoniae

    DJ Pickney Tiger, pseud., 1970-

    2007-01-01

    Saksa rockansambli The 4 Sivits kontserdituurist Ida-Saksamaal, Slovakkias ja Tšehhis. DJ Criticali heliplaadist "Mixtape". Heliplaatidest: Muse "Black Holes & Revelations", Beck "The Information", Alice Russell "Under The Munka Moon", Scissor Sisters "Ta-Dah", "Biitparaadid", Fergie "The Dutchess", Sabrina Malheiros "Vibrasons", Bob Dylan "Modern Times", Nelja Ruusua "Ensi-Ilta", Marshmobil "Minx", James Morrison "Undiscovered"

  5. Bioeconomics of Commercial Marine Fisheries of Bay of Bengal: Status and Direction

    Directory of Open Access Journals (Sweden)

    Ahasan Habib

    2014-01-01

    Full Text Available The fishery of the Bay of Bengal (BOB is assumed to be suffering from the overexploitation. This paper aims to assess the sustainability of current level of fishing effort as well as possible changes driven by anthropogenic and climate driven factors. Therefore, the commercial marine fishery of BOB for the period of 1985/86 to 2007/08 is analyzed by applying Gordon-Schaefer Surplus Production Model on time series of total catch and standardized effort. Static reference points such as open-access equilibrium, maximum economic yield, and maximum sustainable yield are established. Assumptions about potential climatic and anthropogenic effects on r (intrinsic growth rate and K (carrying capacity of BOB fishery have been made under three different reference equilibriums. The results showed that the fishery is not biologically overexploited; however, it is predicted to be passing a critical situation, in terms of achieving reference points in the near future. But, on the other hand, economic overfishing started several years before. Higher fishing effort, and inadequate institutional and legal framework have been the major bottlenecks for the proper management of BOB fisheries and these may leads fishery more vulnerable against changing marine realm. Thus, the present study calls for policy intervention to rescue the stock from the existing high fishing pressure that would lead to depletion.

  6. Enzymatically catalyzed synthesis of anti-blooming agent 1,3-dibehenoyl-2-oleoyl glycerol in a solvent-free system: optimization by response surface methodology.

    Science.gov (United States)

    Meng, Zong; Geng, Wen-Xin; Li, Jin-Wei; Yang, Zhao-Qi; Jiang, Jiang; Wang, Xing-Guo; Liu, Yuan-Fa

    2013-11-13

    Products rich in 1,3-dibehenoyl-2-oleoyl glycerol (BOB) triglyceride (TAG) were produced by enzymatic interesterification of high oleic acid sunflower oil (HOSO) and behenic acid methyl ester (BME) by 1,3-regiospecific lipase Lipozyme RM IM in a solvent-free system. The impact factors of enzyme load, substrate molar ratio of BME to HOSO (BME/HOSO), reaction time, reaction temperature, and pre-equilibration water activity of the enzyme on BOB content and BME conversions were investigated by single-factor experiments and then optimized using the response surface methodology (RSM). The optimum conditions were as follows: reaction temperature, 72 °C; reaction time, 7.99 h; substrate molar ratio, 2.5:1; enzyme load, 10%; and pre-equilibration water activities of the enzyme, 0.28. The results from the experiments conducted according to the predicted optimal conditions were as follows: the content of BOB was 32.76%, and the conversion of BME was 65.16%. The experimental values agreed with the predicted values, which verified the sufficiency of the quadratic regression models. After purification under the optimal short-range molecular distillation and two-step solvent fractionation, the content of BOB in the target product can reach 77.14%, indicating the great potential for industrial production of the anti-blooming agent. PMID:24147905

  7. Tsaaride suveresidentsi Peterburi lähedal kerkib eestilik linnaosa / Andres Reimer

    Index Scriptorium Estoniae

    Reimer, Andres

    2011-01-01

    Igor Izraeljani perefirmale Technomar&Adremi kuuluv Venemaa arendusfirma Tareal alustab Petrodvoretsi lähedale rajatavas Vanino linnaosas majade ja korterite müüki. Koostöös kohaliku partneriga arendatavale alale kerkib 142 eramut ja 99 luksuskorterit. Majad on Eesti projekteerijate abiga kavandatud Sergei Bobõlevi AB-s

  8. Women, Girls, and Binge Drinking

    Centers for Disease Control (CDC) Podcasts

    2013-08-01

    Bob Brewer, CDC's Alcohol Program Director, goes on the air to discuss the problem of binge drinking among women and girls.  Created: 8/1/2013 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP).   Date Released: 8/1/2013.

  9. Karjas on ohutum elada / Toomas Paul

    Index Scriptorium Estoniae

    Paul, Toomas, 1939-

    2003-01-01

    Vt. ka Paul, Toomas. "Löö esimesena, Freddy!". Eesti Päevaleht, 8. mai 2003. Inimesest kui karjaloomast, inimloomusest ja sallivusest. Ilm. ka: Paul, Toomas. Ole salliv, Bob // Pastishsh & popurrii : ilmavaatlusi / Paul, Toomas. - [Tallinn] : Oomen, 2007. - Lk. 54-58

  10. Impact of tropical cyclone development on the instability of South Asian High and the summer monsoon onset over Bay of Bengal

    Science.gov (United States)

    Wu, Guoxiong; Ren, Suling; Xu, Jianmin; Wang, Dongxiao; Bao, Qing; Liu, Boqi; Liu, Yimin

    2013-11-01

    This paper analyzes the evolution of the South Asian High (SAH) during and after the development of tropical cyclone Neoguri over the South China Sea (SCS) in mid-April 2008, the formation of tropical storm Nargis over the Bay of Bengal (BOB) in late April, and the Asian summer monsoon onset, as well as their interrelationships. Numerical sensitivity experiments are conducted to explore the underlying mechanism responsible for these seasonal transitions in 2008. It is demonstrated that strong latent heating related with tropical cyclone activities over the SCS can enhance the development of the SAH aloft and generate zonal asymmetric potential vorticity (PV) forcing, with positive vorticity advection to its east and negative advection to its west. Following the decay of the tropical cyclone, this asymmetric forcing leads to instability development of the SAH, presenting as a slowly westward-propagating Rossby wave accompanied by a westward shift of the high PV advection. A strong upper tropospheric divergence on the southwest of the SAH also shifts westward, while positive PV eddies are shed from the high PV advection and eventually arrives in the southern BOB. Such synoptic patterns provide favorable pumping conditions for local cyclonic vorticity to develop. The latent heating release from the cyclogenesis further intensifies the upper-layer divergence, and the lower and upper circulations become phase locked, leading to the explosive development of the tropical cyclone over the southern BOB. Consequently, a tropical storm is generated and the BOB summer monsoon commences.

  11. The Relationship between Inner Product and Counting Cycles

    DEFF Research Database (Denmark)

    Sun, Xiaoming; Wang, Chengu; Yu, Wei

    2012-01-01

    Cycle-Counting is the following communication complexity problem: Alice and Bob each holds a permutation of size n with the promise there will be either a cycles or b cycles in their product. They want to distinguish between these two cases by communicating a few bits. We show that the quantum/no...

  12. Quantum key distribution: vulnerable if imperfectly implemented

    Science.gov (United States)

    Leuchs, G.

    2013-10-01

    We report several vulnerabilities found in Clavis2, the flagship quantum key distribution (QKD) system from ID Quantique. We show the hacking of a calibration sequence run by Clavis2 to synchronize the Alice and Bob devices before performing the secret key exchange. This hack induces a temporal detection efficiency mismatch in Bob that can allow Eve to break the security of the cryptosystem using faked states. We also experimentally investigate the superlinear behaviour in the single-photon detectors (SPDs) used by Bob. Due to this superlinearity, the SPDs feature an actual multi-photon detection probability which is generally higher than the theoretically-modelled value. We show how this increases the risk of detector control attacks on QKD systems (including Clavis2) employing such SPDs. Finally, we review the experimental feasibility of Trojan-horse attacks. In the case of Clavis2, the objective is to read Bob's phase modulator to acquire knowledge of his basis choice as this information suffices for constructing the raw key in the Scarani-Acin-Ribordy-Gisin 2004 (SARG04) protocol. We work in close collaboration with ID Quantique and for all these loopholes, we notified them in advance. Wherever possible, we or ID Quantique proposed countermeasures and they implemented suitable patches and upgrade their systems.

  13. Teleportation of Two-Particle Entangled State via Cluster State

    Institute of Scientific and Technical Information of China (English)

    LI Da-Chuang; CAO Zhuo-Liang

    2007-01-01

    In this paper,two schemes for teleporting an unknown two-particle entangled state from the sender (Alice)to the receiver (Bob) via a four-particle entangled cluster state are proposed.In these two schemes,the unknown twoparticle entangled state can be teleported perfectly.The successful probabilities and fidelities of the schemes can reach unity.

  14. Blind quantum computation over a collective-noise channel

    Science.gov (United States)

    Takeuchi, Yuki; Fujii, Keisuke; Ikuta, Rikizo; Yamamoto, Takashi; Imoto, Nobuyuki

    2016-05-01

    Blind quantum computation (BQC) allows a client (Alice), who only possesses relatively poor quantum devices, to delegate universal quantum computation to a server (Bob) in such a way that Bob cannot know Alice's inputs, algorithm, and outputs. The quantum channel between Alice and Bob is noisy, and the loss over the long-distance quantum communication should also be taken into account. Here we propose to use decoherence-free subspace (DFS) to overcome the collective noise in the quantum channel for BQC, which we call DFS-BQC. We propose three variations of DFS-BQC protocols. One of them, a coherent-light-assisted DFS-BQC protocol, allows Alice to faithfully send the signal photons with a probability proportional to a transmission rate of the quantum channel. In all cases, we combine the ideas based on DFS and the Broadbent-Fitzsimons-Kashefi protocol, which is one of the BQC protocols, without degrading unconditional security. The proposed DFS-based schemes are generic and hence can be applied to other BQC protocols where Alice sends quantum states to Bob.

  15. When the Going Gets Tough...

    Science.gov (United States)

    Brand, Myles

    2000-01-01

    The president of Indiana University recounts his management of the campus athletic crisis which resulted in his firing the institution's legendary basketball coach, Bob Knight, amid national media attention. He offers five lessons learned: be prepared; consult widely, but focus on key constituencies; assert leadership; expect and accept criticism;…

  16. Knight on Sports and Education.

    Science.gov (United States)

    OAH Magazine of History, 1985

    1985-01-01

    Bob Knight, the coach of the Indiana University men's basketball team, discusses a number of topics including problems with education today, changes in education that he has personally observed over the last 20 years, the role that athletics should play in education, and the importance of history instruction. (RM)

  17. Rasta-revolutsioon : ikka ja jälle. White label : Nikns Suns - Imed. Kuula / DJ Pickney Tiger

    Index Scriptorium Estoniae

    DJ Pickney Tiger, pseud., 1970-

    2007-01-01

    Heliplaadist "Bob Marley And The Wailers. Exodus". Ansamblist. Heliplaatidest: Taraf De Haidouks "Maskarada", Los Desterrados "Tu", Prince "Planet Earth", Manu Chao "La Radiolinia", Kanye West "Graduation", 50 Cent "Curtis", Vaiko Eplik ja Eliit 2", "Shahrukh. The King Khan. Vol 3", Big &Rich "Between Raising Hell and Amazing Graze", Tiit Kikas"String Theory"

  18. Seasonal variability of salinity budget and water exchange in the northern Indian Ocean from HYCOM assimilation

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yuhong; DU Yan

    2012-01-01

    Based on HYbrid Coordinate Ocean Model (HYCOM) assimilation and observations,we analyzed seasonal variability of the salinity budget in the southeastern Arabian Sea (AS) and the southern part of the Bay of Bengal (BOB),as well as water exchange between the two basins.Results show that fresh water flux cannot explain salinity changes in salinity budget of both regions.Oceanic advection decreases salinity in the southeastern AS during the winter monsoon season and increases salinity in the southern BOB during the summer monsoon season.In winter,the Northeast Monsoon Current (NMC) carries fresher water from the BOB westward into the southern AS; this westward advection is confined to 4°-6°N and the upper 180 m south of the Indian peninsula.Part of the less saline water then turns northward,decreasing salinity in the southeastern AS.In summer,the Southwest Monsoon Current (SMC) advects high-salinity water from the AS eastward into the BOB,increasing salinity along its path.This eastward advection of high-salinity water south of the India Peninsula extends southward to 2°N,and the layer becomes shallower than in winter.In addition to the monsoon current,the salinity difference between the two basins is important for salinity advection.

  19. How customer satisfaction can influence clinical outcome in a back specialty clinic.

    Science.gov (United States)

    Reznik, B

    1994-01-01

    Determining what defines quality is the aim of the study produced at the Texas Back Institute. Bob Reznik, M.B.A., vice president of the institute, presents a methodology for measuring the outcomes of clinical care and relating it to physician performance on a variety of levels.

  20. Controls of dimethyl sulphide in the Bay of Bengal during BOBMEX-Pilot cruise 1998

    Digital Repository Service at National Institute of Oceanography (India)

    Shenoy, D.M.; DileepKumar, M.; Sarma, V.V.S.S.

    et al 1996; Andreae and Crutzen 1997). 2:2 Aerosol measurements Aerosol samples were collected at variable heights above the sea level on board the ship. Polycarbonate Figure 1. Locations of stations occupied during the BOB- MEX-Pilot cruise...

  1. New experiment in the advertising world! / Alina Lisina

    Index Scriptorium Estoniae

    Lisina, Alina

    2005-01-01

    Lätis Siguldas viidi läbi kolme reklaamiagentuuri Y&R Garage 4x4, Balta Communication'i ja Metro Leo Burnett'i nädalane seminar, mille käigus loodi ühiselt reklaam Adazhu cipsi'le. Oma teadmisi jagas reklaaminduse maailmaklassi ekspert Bob Kincey

  2. Information Causality is a Special Point in the Dual of the Gray-Wyner Region

    CERN Document Server

    Beigi, Salman

    2011-01-01

    Information Causality contributes to the program of deriving fundamentals of quantum theory from information theoretic principles. It puts restrictions on the amount of information learned by a party (Bob) from the other party (Alice) in a one-way communication scenario as follows. Bob receives an index b, and after a one-way communication from Alice, tries to recover a part of Alice's input. Because of the possibility of cloning, this game in its completely classical form is equivalent to one in which there are several Bobs indexed by b, who are interested in recovering different parts of Alice's input string, after receiving a public message from her. Adding a private message from Alice to each Bob, and assuming that the game is played many times, we obtain the Gray-Wyner problem for which a complete characterization of the achievable region is known. In this paper, we first argue that in the classical case Information Causality is only a single point in the dual of the Gray-Wyner region. Next, we show that...

  3. Guns and Violence. Current Controversies.

    Science.gov (United States)

    Kim, Henny H., Ed.

    This book focuses on gun violence and gun control, presenting both sides of arguments about firearms ownership and gun control. Each of five chapters poses a question about gun control and provides answers for both sides of the question. The following essays are included: (1) "Gun Violence Is Becoming an Epidemic" (Bob Herbert); (2) "Gun Violence…

  4. Multi-step quantum secure direct communication using multi-particle Green-Horne-Zeilinger state

    CERN Document Server

    Wang, C; Long, G L; Wang, Chuan; Deng, Fu Guo; Long, Gui Lu

    2005-01-01

    A multi-step quantum secure direct communication protocol using blocks of multi-particle maximally entangled state is proposed. In this protocol, the particles in a Green-Horne-Zeilinger state are sent from Alice to Bob in batches in several steps. It has the advantage of high efficiency and high source capacity.

  5. 76 FR 13401 - Environmental Impact Statements; Notice of Availability

    Science.gov (United States)

    2011-03-11

    ..., Central Kupreanof Timber Harvest Project, Proposes to Harvest up to 70.2 Million Board Feet of Timber... Mine Pits, Haul Roads, Water Management Structures, and Overburden Disposal Areas, Implementation.../2011, Contact: Bob Bayer 802-362-2307 Ext. 218 Revision to FR Notice Published 12/23/2010:...

  6. Unobtrusively Measuring Stress and Workload of Knowledge Workers

    NARCIS (Netherlands)

    Koldijk, S.J.; Neerincx, M.A.; Kraaij, W.

    2012-01-01

    Imagine a typical working day of a knowledge worker, i.e. someone who is predominantly concerned with interpreting and generating information. Bob gets into the office at 9, starts up his computer, takes a look at his mails and calendar and plans what things he has to do this day. Then he starts wor

  7. The advantage of higher-order theory of mind in the game of limited bidding

    NARCIS (Netherlands)

    De Weerd, H.; Verheij, B.; van Eijck, J.; Verbrugge, L. C.

    2011-01-01

    Higher-order theory of mind is the ability to recursively model mental states of other agents. It is known that adults in general can reason adequately at the second order (covering attributions like "Alice knows that Bob knows that she wrote a novel under pseudonym"), but there are cognitive limits

  8. 用新技术武装未来(二)

    Institute of Scientific and Technical Information of China (English)

    《汽车工程》编辑部; 张文

    2003-01-01

    @@ (续本刊上期) 聚焦于变速器 Borg Warner Transmission Systems公司总裁Bob Welding鲍勃.韦尔汀说:"近百年来,汽车工业中只有两种不同的变速器技术得到了广泛大量的商业应用.

  9. Uudised

    Index Scriptorium Estoniae

    2006-01-01

    Giuseppe Verdi ooperi "Maskiball" uuslavastusest Malmös. Kantrilaulja Willie Nelsoni heliplaadist "Cowboys are Frequently Secretly". Helilooja Gustav Mahleri lapselaps Marina Mahler nõuab Austria Galeriilt tagasi Edvard Munchi maali "Suveöö rannas". Jamaical Kingstonis asuvast reggae-laulja Bob Marley sünnimajast, kus asuvad helistuudio ja muuseum

  10. Recycling the myth that global warming ‘stopped in the mid-1990s’

    OpenAIRE

    Robert E T Ward

    2012-01-01

    The columnist David Rose has frequently told his readers in the ‘Mail on Sunday’ that global warming ‘stopped’ almost two decades ago. Yet as Bob Ward observes, his often repeated claim has no basis in climate science and ought to be challenged.

  11. Sediment pathways and emergence of Himalayan source material in the Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Krishna, K.S.; Ismaiel, M.; Srinivas, K.; Gopala Rao, D.; Mishra, J.; Saha, D.

    . This proposition agrees well with the observation of rapid deposition of sediments at ~23 Ma in both the BoB and Arabian Sea. However, post-23 Ma altogether different scenarios of sedimentation rate emerge in the Indus and Bengal fans (Figure 9), despite...

  12. Geology Museum-Based Learning in Soil Science Education

    Science.gov (United States)

    Mikhailova, E. A.; Tennant, C. H.; Post, C. J.; Cicimurri, C.; Cicimurri, D.

    2013-01-01

    Museums provide unique learning opportunities in soil science. The Bob Campbell Geology Museum in Clemson, SC, features an exhibit of minerals and rocks common in the state and in its geologic history. We developed a hands-on laboratory exercise utilizing an exhibit that gives college students an opportunity to visualize regional minerals and…

  13. Freedom Food : op de bres voor het welzijn van landbouwhuisdieren in het Verenigd Koninkrijk

    NARCIS (Netherlands)

    Waller, B.; Heijden, van der P.G.M.

    2009-01-01

    Op 11 december 2008 gaf Bob Waller tijdens de NGVA thema-avond een presentatie met als titel "Fork naar Farm; Maatschappelijke visies op aquacultuur". Freedom Food is een organisatie die tot doel heeft het welzijnprogramma van het Royal Society for the Prevention of Cruelty to Animals - (RSPCA), de

  14. Teaching Medical Student Psychiatry Through Contemporary Music

    Science.gov (United States)

    Egan, William H.

    1977-01-01

    An audio technique uses contemporary music recordings to illustrate various personality disorders, including: schizoid, paranoid, compulsive, antisocial, and hysterical. The works of Bob Dylan, Paul Simon, Harry Chapin, the Beatles, Janis Ian, James Taylor, Tammy Wynette, and others are cited. (LBH)

  15. Can They Find the Right Place?(初二适用)

    Institute of Scientific and Technical Information of China (English)

    陶丽萍

    2004-01-01

    Mr Green and his son, Bob, rented(租) a boat from Mr Brown. They fished in some places but caught nothing. Then they found a very good place and caught a lot of fish.Now it was late and they were going back home.

  16. An Leabharlann : The Irish Library

    OpenAIRE

    Sliney, Marjory

    2010-01-01

    Academic libraries in Challenging Times / John Cox; Public Libraries and the Recession / Liam Ronayne; Social Networks / Jane Burns; Poetry Promotion in Public libraries / Brian Hegarty & Clare Thornley; Conference Reports: Conference on Conceptions of Library and Information Sciencw / Eva Hornung; LILAC 2010 / Aoife Geraghty; Books: Acquisitions; Information Policy; Academic Libraries; Marketing; Student Research Support; News from the Stacks; Obituary – Bob McKee

  17. Device-independent two-party cryptography secure against sequential attacks

    Science.gov (United States)

    Kaniewski, Jędrzej; Wehner, Stephanie

    2016-05-01

    The goal of two-party cryptography is to enable two parties, Alice and Bob, to solve common tasks without the need for mutual trust. Examples of such tasks are private access to a database, and secure identification. Quantum communication enables security for all of these problems in the noisy-storage model by sending more signals than the adversary can store in a certain time frame. Here, we initiate the study of device-independent (DI) protocols for two-party cryptography in the noisy-storage model. Specifically, we present a relatively easy to implement protocol for a cryptographic building block known as weak string erasure and prove its security even if the devices used in the protocol are prepared by the dishonest party. DI two-party cryptography is made challenging by the fact that Alice and Bob do not trust each other, which requires new techniques to establish security. We fully analyse the case of memoryless devices (for which sequential attacks are optimal) and the case of sequential attacks for arbitrary devices. The key ingredient of the proof, which might be of independent interest, is an explicit (and tight) relation between the violation of the Clauser-Horne-Shimony-Holt inequality observed by Alice and Bob and uncertainty generated by Alice against Bob who is forced to measure his system before finding out Alice’s setting (guessing with postmeasurement information). In particular, we show that security is possible for arbitrarily small violation.

  18. Quantum secure direct communication via partially entangled states

    Institute of Scientific and Technical Information of China (English)

    Man Zhong-Xiao; Xia Yun-Jie

    2007-01-01

    We present in this paper a quantum secure direct communication (QSDC) protocol by using partially entangled states. In the scheme a third party (Trent) is introduced to authenticate the participants. After authentication, Alice can directly, deterministically and successfully send a secret message to Bob. The security of the scheme is also discussed and confirmed.

  19. Quantum secure direct communication protocol with blind polarization bases and Particles' transmitting order

    Institute of Scientific and Technical Information of China (English)

    Song Jie; Zhu Ai-Dong; Zhang Shou

    2007-01-01

    This paper presents a modified secure direct communication protocol by using the blind polarization bases and particles'random transmitting order.In our protocol.a sender (Alice) encodes secret messages by rotating a random polarization angle of particle and then the receiver (Bob) sends back these particles as a random sequence.This ensures the security of communication.

  20. 78 FR 10195 - Changes in Flood Hazard Determinations

    Science.gov (United States)

    2013-02-13

    ...). Stephen M. Wareham, MA 02571. team.com/starr/ Holmes, RegionalWorkspaces/ Chairman, Town RegionI/pages/ of... 840 Boonville Avenue, http://www.starr- March 29, 2013 290149 Springfield (12- Bob Stephens... Enginnering Martin Luther Division, 210 Martin King Jr. Luther King Junior Boulevard, Room Boulevard, Room...

  1. 77 FR 62511 - Soule Hydro LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...

    Science.gov (United States)

    2012-10-15

    ... powerhouse across the Soule River, 10 miles submarine cable across the Portland Canal, then 2.5 miles... the Federal Power Act (FPA), proposing to study the feasibility of the Soule River Hydroelectric... Contact: Mr. Bob Grimm, Alaska Power & Telephone Company, P.O. Box 3222, 193 Otto Street, Port...

  2. 2005年贵金属价格预测(完)

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    彼得,理查森——悉尼Deutsche银行;Glyn Stenens——_伦敦标准银行;Bob Takai——东京Sumitomo公司;Matthew Tumer—伦敦Virtual Metals;艾伦,威廉森——汇丰银行。

  3. Ellerhein tegi ajalugu! / Kaie Tanner

    Index Scriptorium Estoniae

    Tanner, Kaie, 1975-

    2009-01-01

    XI rahvusvahelisest koorifestivalist Tallinn 2009. Festivalimuljetest ka Grand Prix võitnud tütarlastekoori Ellerhein dirigent Tiia-Ester Loitme, festivali kunstiline juht Aarne Saluveer, žürii esimees Bob Chilcott ja žürii liige Mikk Üleoja. Konkursi tulemused

  4. Siim Nestor soovitab : Toimub selliseid asju... / Siim Nestor

    Index Scriptorium Estoniae

    Nestor, Siim, 1974-

    2005-01-01

    Ameerika ansambel Tha Alkaholiks üritusel "Hip Hop Café" 4. nov. klubis Hollywood, ansambel The Wailers üritusel "The Spirit of Bob Marley" 5. nov. klubis Amigo, hiphopmuusika üritus 9. nov. klubis Privé, üritusel "WHA!?" 5. nov. Rakveres esitlusel uus duubelkogumik "Higha Collection 5"

  5. 77 FR 2439 - Airworthiness Directives; Hawker Beechcraft Corporation Models 1900, 1900C, and 1900D Airplanes

    Science.gov (United States)

    2012-01-18

    ... nose up. The airplane pitch was controlled with the elevator trim and the airplane returned to base... Executive Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR... elevator bob-weight and attaching linkage for correct installation and for damage or deformation to...

  6. Extremely large anthropogenic-aerosol contribution to total aerosol load over the Bay of Bengal during winter season

    Directory of Open Access Journals (Sweden)

    D. G. Kaskaoutis

    2011-07-01

    Full Text Available Ship-borne observations of spectral aerosol optical depth (AOD have been carried out over the entire Bay of Bengal (BoB as part of the W-ICARB cruise campaign during the period 27 December 2008–30 January 2009. The results reveal a pronounced temporal and spatial variability in the optical characteristics of aerosols mainly due to anthropogenic emissions and their dispersion controlled by local meteorology. The highest aerosol amount, with mean AOD500>0.4, being even above 1.0 on specific days, is found close to the coastal regions in the western and northern parts of BoB. In these regions the Ångström exponent is also found to be high (~1.2–1.25 indicating transport of strong anthropogenic emissions from continental regions, while very high AOD500 (0.39±0.07 and α380–870 values (1.27±0.09 are found over the eastern BoB. Except from the large α380–870 values, an indication of strong fine-mode dominance is also observed from the AOD curvature, which is negative in the vast majority of the cases, suggesting dominance of an anthropogenic-pollution aerosol type. On the other hand, clean maritime conditions are rather rare over the region, while the aerosol types are further examined through a classification scheme based on the relationship between α and dα. It was found that even for the same α values the fine-mode dominance is larger for higher AODs showing the strong continental influence over the marine environment of BoB. Furthermore, there is also an evidence of aerosol-size growth under more turbid conditions indicative of coagulation and/or humidification over specific BoB regions. The results obtained using OPAC model show significant fraction of soot aerosols (~6 %–8 % over the eastern and northwestern BoB, while coarse-mode sea salt particles are found to dominate in the southern parts of BoB.

  7. Quantum authentication based on the randomness of measurement bases in BB84

    International Nuclear Information System (INIS)

    Full text: The establishment of a secret key between two legitimate end points of a communication link, let us name them Alice and Bob, using Quantum key distribution (QKD) is unconditionally secure thanks to Quantum Physics laws.However, the various QKD protocols do not intend to provide the authentication of the end points: Alice cannot be sure that she is communicating with Bob and reciprocally. Therefore, these protocols are subjects to various attacks. The most obvious attack is the man-in-the-middle attack in which an eavesdropper, let us name her Eve, stands in the middle of the communication link. Alice communicates with Eve meanwhile she thinks she communicate with Bob. And Bob communicates with Eve meanwhile he thinks he is communicating with Alice. Eve, acting as a relay, can read all the communications between Alice and Bob and retransmit them. To prevent this kind of attack, the solution is to authenticate the two end points of the communication link. One solution is that Alice and Bob share an authentication key prior to the communication. In order to improve the security, Alice and Bob must share a set of authentication one-time keys. One-time key means that the key has to be used only once because each time a key is used, the eavesdropper Eve can gain a few information on the key. Re-using the same key many times would finally reveal the key to Eve. However, Eve can simulate many times the authentication process with Alice. Each time Eve simulates the authentication process, one of the pre-positioned keys is depleted leading to the exhaustion of the set of pre-positioned keys. This type of attack is named Denial of Service attack. In this work, we propose to use the randomness of the measurement bases in BB84 to build an authentication scheme based on the existence of a prepositioned authentication key. This authentication scheme can be used with BB84 but also with any other Quantum Key Distribution protocols. It is protected against the Denial of

  8. Oligo(ethylene glycol)-functionalized disiloxanes as electrolytes for lithium-ion batteries

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Zhengcheng; Dong, Jian; Amine, Khalil [Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States); West, Robert [Organosilicon Research Center, Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706 (United States)

    2010-09-15

    Functionalized disiloxane compounds were synthesized by attaching oligo(ethylene glycol) chains, -(CH{sub 2}CH{sub 2}O)-{sub n}, n = 2-7, via hydrosilation, dehydrocoupling, and nucleophilic substitution reactions and were examined as non-aqueous electrolyte solvents in lithium-ion cells. The compounds were fully characterized by {sup 1}H, {sup 13}C, and {sup 29}Si nuclear magnetic resonance (NMR) spectroscopy. Upon doping with lithium bis(oxalato)borate (LiBOB) or LiPF{sub 6}, the disiloxane electrolytes showed conductivities up to 6.2 x 10{sup -4} S cm{sup -1} at room temperature. The thermal behavior of the electrolytes was studied by differential scanning calorimetry, which revealed very low glass transition temperatures before and after LiBOB doping and much higher thermal stability compared to organic carbonate electrolytes. Cyclic voltammetry measurements showed that disiloxane-based electrolytes with 0.8 M LiBOB salt concentration are stable to 4.7 V. The LiBOB/disiloxane combinations were found to be good electrolytes for lithium-ion cells; unlike LiPF{sub 6}, LiBOB can provide a good passivation film on the graphite anode. The LiPF{sub 6}/disiloxane electrolyte was enabled in lithium-ion cells by adding 1 wt% vinyl ethylene carbonate (VEC). Full cell performance tests with LiNi{sub 0.80}Co{sub 0.15}Al{sub 0.05}O{sub 2} as the cathode and mesocarbon microbead (MCMB) graphite as the anode show stable cyclability. The results demonstrate that disiloxane-based electrolytes have considerable potential as electrolytes for use in lithium-ion batteries. (author)

  9. ASYMMETRIC-LEAVES2 and an ortholog of eukaryotic NudC domain proteins repress expression of AUXIN-RESPONSE-FACTOR and class 1 KNOX homeobox genes for development of flat symmetric leaves in Arabidopsis

    Directory of Open Access Journals (Sweden)

    Nanako Ishibashi

    2012-01-01

    Leaf primordia form around the shoot apical meristem, which consists of indeterminate stem cells. Upon initiation of leaf development, adaxial-abaxial patterning is crucial for appropriate lateral expansion, via cellular proliferation, and the formation of flat symmetric leaves. Many genes that specify such patterning have been identified, but regulation by upstream factors of the expression of relevant effector genes remains poorly understood. In Arabidopsis thaliana, ASYMMETRIC LEAVES2 (AS2 and AS1 play important roles in repressing transcription of class 1 KNOTTED1-like homeobox (KNOX genes and leaf abaxial-determinant effector genes. We report here a mutation, designated enhancer of asymmetric leaves2 and asymmetric leaves1 (eal, that is associated with efficient generation of abaxialized filamentous leaves on the as2 or as1 background. Levels of transcripts of many abaxial-determinant genes, including ETTIN (ETT/AUXIN RESPONSE FACTOR3 (ARF3, and all four class 1 KNOX genes were markedly elevated in as2 eal shoot apices. Rudimentary patterning in as2 eal leaves was suppressed by the ett mutation. EAL encodes BOBBER1 (BOB1, an Arabidopsis ortholog of eukaryotic NudC domain proteins. BOB1 was expressed in plant tissues with division potential and bob1 mutations resulted in lowered levels of transcripts of some cell-cycle genes and decreased rates of cell division in shoot and root apices. Coordinated cellular proliferation, supported by BOB1, and repression of all class 1 KNOX genes, ETT/ARF3 by AS2 (AS1 and BOB1 might be critical for repression of the indeterminate state and of aberrant abaxialization in the presumptive adaxial domain of leaf primordia, which might ensure the formation of flat symmetric leaves.

  10. Possible role of pre-monsoon sea surface warming in driving the summer monsoon onset over the Bay of Bengal

    Science.gov (United States)

    Li, Kuiping; Liu, Yanliang; Yang, Yang; Li, Zhi; Liu, Baochao; Xue, Liang; Yu, Weidong

    2016-08-01

    Sea surface temperature (SST) reaches its annual maximum just before the summer monsoon onset and collapses soon after in the central areas of the Bay of Bengal (BoB). Here, the impact of the peak in the pre-monsoon SST on triggering the earliest monsoon onset in the BoB is investigated, with a focus on the role they play in driving the first-branch northward-propagating intra-seasonal oscillations (FNISOs) over the equatorial Eastern Indian Ocean (EIO). During the calm pre-monsoon period, sea surface warming in the BoB could increase the surface equivalent potential temperature (θe) in several ways. Firstly, warming of the sea surface heats the surface air through sensible heating, which forces the air temperature to follow the SST. The elevated air surface temperature accounts for 30 % of the surface θe growth. Furthermore, the elevated air temperature raises the water vapor capacity of the surface air to accommodate more water vapor. Constrained by the observation that the surface relative humidity is maintained nearly constant during the monsoon transition period, the surface specific humidity exhibits a significant increase, according to the Clausius-Clapeyron relationship. Budget analysis indicates that the additional moisture is primarily obtained from sea surface evaporation, which also exhibits a weak increasing trend due to the sea surface warming. In this way, it contributes about 70 % to the surface θe growth. The rapid SST increase during the pre-monsoon period preconditions the summer monsoon onset over the BoB through its contributions to significantly increase the surface θe, which eventually establishes the meridional asymmetry of the atmospheric convective instability in the EIO. The pre-established greater convective instability leads to the FNISO convections, and the summer monsoon is triggered in the BoB region.

  11. An integrated campaign for investigation of winter-time continental haze over Indo-Gangetic Basin and its radiative effects

    International Nuclear Information System (INIS)

    An outflow of continental haze occurs from Indo-Gangetic Basin (IGB) in the North to Bay of Bengal (BoB) in the South. An integrated campaign was organized to investigate this continental haze during December 2013–February 2014 at source and remote regions within IGB to quantify its radiative effects. Measurements were carried out at three locations in eastern India; 1) Kalas Island, Sundarban (21.68°N, 88.57°E) — an isolated island along the north-east coast of BoB, 2) Kolkata (22.57°N, 88.42°E) — an urban metropolis and 3) Siliguri (26.70°N, 88.35°E) — an urban region at the foothills of eastern Himalayas. Ground-based AOD (at 0.5 μm) is observed to be maximum (1.25 ± 0.18) over Kolkata followed by Siliguri (0.60 ± 0.17) and minimum over Sundarban (0.53 ± 0.18). Black carbon concentration is found to be maximum at Kolkata (21.6 ± 6.6 μg·m−3) with almost equal concentrations at Siliguri (12.6 ± 5.2 μg·m−3) and Sundarban (12.3 ± 3.0 μg·m−3). Combination of MODIS-AOD and back-trajectories analysis shows an outflow of winter-time continental haze originating from central IGB and venting out through Sundarban towards BoB. This continental haze with high extinction coefficient is identified up to central BoB using CALIPSO observations and is found to contribute ~ 75% to marine AOD over central BoB. This haze produces significantly high aerosol radiative forcing within the atmosphere over Kolkata (75.4 Wm−2) as well as over Siliguri and Sundarban (40 Wm−2) indicating large forcing over entire IGB, from foothills of the Himalayas to coastal region. This winter-time continental haze also causes about similar radiative heating (1.5 K·day−1) from Siliguri to Sundarban which is enhanced over Kolkata (3 K·day−1) due to large emission of local urban aerosols. This high aerosol heating over entire IGB and coastal region of BoB can have considerable impact on the monsoonal circulation and more importantly, such haze transported over to

  12. An integrated campaign for investigation of winter-time continental haze over Indo-Gangetic Basin and its radiative effects

    Energy Technology Data Exchange (ETDEWEB)

    Das, Sanat Kumar, E-mail: sanatkrdas@gmail.com [Environmental Sciences Section, Bose Institute, Kolkata (India); Center for Astroparticle Physics and Space Science, Bose Institute, Kolkata (India); Chatterjee, Abhijit [Environmental Sciences Section, Bose Institute, Kolkata (India); Center for Astroparticle Physics and Space Science, Bose Institute, Kolkata (India); National Facility on Astroparticle Physics and Space Science, Darjeeling (India); Ghosh, Sanjay K. [Center for Astroparticle Physics and Space Science, Bose Institute, Kolkata (India); National Facility on Astroparticle Physics and Space Science, Darjeeling (India); Raha, Sibaji [Environmental Sciences Section, Bose Institute, Kolkata (India); Center for Astroparticle Physics and Space Science, Bose Institute, Kolkata (India); National Facility on Astroparticle Physics and Space Science, Darjeeling (India)

    2015-11-15

    An outflow of continental haze occurs from Indo-Gangetic Basin (IGB) in the North to Bay of Bengal (BoB) in the South. An integrated campaign was organized to investigate this continental haze during December 2013–February 2014 at source and remote regions within IGB to quantify its radiative effects. Measurements were carried out at three locations in eastern India; 1) Kalas Island, Sundarban (21.68°N, 88.57°E) — an isolated island along the north-east coast of BoB, 2) Kolkata (22.57°N, 88.42°E) — an urban metropolis and 3) Siliguri (26.70°N, 88.35°E) — an urban region at the foothills of eastern Himalayas. Ground-based AOD (at 0.5 μm) is observed to be maximum (1.25 ± 0.18) over Kolkata followed by Siliguri (0.60 ± 0.17) and minimum over Sundarban (0.53 ± 0.18). Black carbon concentration is found to be maximum at Kolkata (21.6 ± 6.6 μg·m{sup −3}) with almost equal concentrations at Siliguri (12.6 ± 5.2 μg·m{sup −3}) and Sundarban (12.3 ± 3.0 μg·m{sup −3}). Combination of MODIS-AOD and back-trajectories analysis shows an outflow of winter-time continental haze originating from central IGB and venting out through Sundarban towards BoB. This continental haze with high extinction coefficient is identified up to central BoB using CALIPSO observations and is found to contribute ~ 75% to marine AOD over central BoB. This haze produces significantly high aerosol radiative forcing within the atmosphere over Kolkata (75.4 Wm{sup −2}) as well as over Siliguri and Sundarban (40 Wm{sup −2}) indicating large forcing over entire IGB, from foothills of the Himalayas to coastal region. This winter-time continental haze also causes about similar radiative heating (1.5 K·day{sup −1}) from Siliguri to Sundarban which is enhanced over Kolkata (3 K·day{sup −1}) due to large emission of local urban aerosols. This high aerosol heating over entire IGB and coastal region of BoB can have considerable impact on the monsoonal circulation and more

  13. Application of Boron-Based Lithium Salt for Li-Ion Battery%硼基锂盐电解质在锂离子电池中的应用

    Institute of Scientific and Technical Information of China (English)

    仇卫华; 阎坤; 连芳; 乔亚非

    2011-01-01

    Electrolyte is considered as one of the key materials to decide the performance of Li-ion batteries.Novel boron-based lithium salts have attracted people' s interests because of its varieties and environmental-friendly property. Lithium bis(oxalato) borate (LiBOB) , as one of boron-based lithium salts, is believed to be a candidate for commercial LiPF6 due to its good film-forming property and high thermal stability. In the paper, the new development of boron-based lithium salts is introduced, and LiBOB is also evaluated as lithium salt of electrolyte for Li-ion battery. The main influencing factors of LiBOB-based electrolyte are summarized. Especially, it has focused on the compatibility of LiBOB-based electrolyte with anode and metal oxide cathode. The application of LiBOBbased polymer electrolyte and LiBOB plastic chip electrolyte are introduced.%电解质材料是锂离子电池的关键材料之一,它直接影响电池的性能.新型硼酸锂盐由于种类繁多且环境友好而越来越引起人们的重视.双草酸硼酸锂(LiBOB)是一种新型的锂盐,具有很好的成膜性能和热稳定性,是一种很有潜力替代现有商品化锂盐LiPF6的物质.本文介绍了近期新型硼基锂盐的发展状况,归纳了LiBOB基电解质的研究概况,综述了影响LiBOB基电解质的因素,讨论了LiBOB与正负极材料的相容性,并对LiBOB基聚合物电解质和LiBOB塑晶电解质的应用进行了介绍.

  14. EDITORIAL: Stability and nonlinear dynamics of plasmas: A symposium celebrating Professor Robert Dewar's accomplishments in plasma physics Stability and nonlinear dynamics of plasmas: A symposium celebrating Professor Robert Dewar's accomplishments in plasma physics

    Science.gov (United States)

    Bhattacharjee, Amitava

    2012-01-01

    To celebrate Professor Robert Dewar's 65th birthday, a Symposium was held on 31 October 2009 in Atlanta, Georgia, just before the 51st Annual Meeting of the Division of Plasma Physics of the American Physical Society. The Symposium was attended by many of Bob's colleagues, friends, postdoctoral colleagues and students (present and former). Boyd Blackwell, Anthony Cooper, Chris Hegna, Stuart Hudson, John Krommes, Alexander Pletzer, Ellen Zweibel, and I gave talks that covered various aspects of Bob's wide-ranging scholarship, and his leadership in the Australian and the US fusion program. At the Symposium, Bob gave an insightful talk, published in this issue as a paper with D Leykam. This paper makes available for the first time unpublished results from Bob's M Sc Thesis on a general method for calculating the potential around a `dressed' test particle in an isotropic and collisionless plasma. The paper is interesting not only because it provides a glimpse of the type of elegant applied mathematics that we have come to associate with Bob, but also because he discusses some leitmotifs in his intellectual evolution since the time he was a graduate student at the University of Melbourne and Princeton University. Through his early encounter with quantum field theory, Bob appreciated the power of Lagrangian and Hamiltonian formalisms, which he used with great effectiveness in nonlinear dynamics and plasma physics. A question that animates much of his work is one that underlies the `dressed' particle problem: if one is given a Hamiltonian with an unperturbed (or `bare') part and an interaction part, how is one to obtain a canonical transformation to `the oscillation centre' thatwould reduce the interaction part to an irreducible residual part while incorporating the rest in a renormalized zeroth-order Hamiltonian? One summer in Princeton, I worked with Bob on a possible variational formulation for this problem, and failed. I was daunted enough by my failure that I turned

  15. CERT TST December 2015 Visit Summary

    Energy Technology Data Exchange (ETDEWEB)

    Little, Robert Currier [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Bailey, Teresa S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gamblin, G. Todd [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Olinger, Chad Tracy [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Pautz, Shawn D. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Williams, Alan B. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-01-25

    The annual PSAAP II TST visit to Texas A&M’s CERT Center was held on December 1-3, 2015. The agenda for the visit is attached. Non-TAMU attendees were: TST Members – Teresa Bailey (LLNL), Todd Gamblin (LLNL), Bob Little (LANL) – Chair, Chad Olinger (LANL), Shawn Pautz (SNL), Alan Williams (SNL);Other Lab staff – Skip Kahler (LANL), Ana Kupresanin (LLNL), and Rob Lowrie (LANL); AST Members – Nelson Hoffman (LANL) and Bob Voigt (Leidos) The TST wishes to express our appreciation to all involved with CERT for the high-quality posters and presentations and for the attention to logistics that enabled a successful visit. We have broken our comments into four sections: (1) Kudos, (2) Recommendations, (3) Feedback on Priorities for April Review, and (4) Follow-Up Activities with Labs.

  16. Lower Bounds for Quantum Oblivious Transfer

    CERN Document Server

    Chailloux, André; Sikora, Jamie

    2010-01-01

    Oblivious transfer is a fundamental primitive in cryptography. While perfect information theoretic security is impossible, quantum oblivious transfer protocols can limit the dishonest players' cheating. Finding the optimal security parameters in such protocols is an important open question. In this paper we show that every 1-out-of-2 oblivious transfer protocol allows a dishonest party to cheat with probability bounded below by a constant strictly larger than 1/2. Alice's cheating is defined as her probability of guessing Bob's index, and Bob's cheating is defined as his probability of guessing both input bits of Alice. In our proof, we relate these cheating probabilities to the cheating probabilities of a coin flipping protocol and conclude by using Kitaev's coin flipping lower bound. Then, we present an oblivious transfer protocol with two messages and cheating probabilities at most 3/4. Last, we extend Kitaev's semidefinite programming formulation to more general primitives, where the security is against a...

  17. Quantum duel revisited

    Science.gov (United States)

    Schmidt, Alexandre G. M.; Paiva, Milena M.

    2012-03-01

    We revisit the quantum two-person duel. In this problem, both Alice and Bob each possess a spin-1/2 particle which models dead and alive states for each player. We review the Abbott and Flitney result—now considering non-zero α1 and α2 in order to decide if it is better for Alice to shoot or not the second time—and we also consider a duel where players do not necessarily start alive. This simple assumption allows us to explore several interesting special cases, namely how a dead player can win the duel shooting just once, or how can Bob revive Alice after one shot, and the better strategy for Alice—being either alive or in a superposition of alive and dead states—fighting a dead opponent.

  18. A Voting Protocol Based on the Controlled Quantum Operation Teleportation

    Science.gov (United States)

    Tian, Juan-Hong; Zhang, Jian-Zhong; Li, Yan-Ping

    2016-05-01

    Based on the controlled quantum operation teleportation, a secure voting protocol is proposed in this paper. Genuine four-qubit entangled state functions as the quantum channel. The eligible voter's quantum operation which represents his vote information can be transmitted to the tallyman Bob with the help of the scrutineer Charlie. Voter's quantum identity authentication provides the anonymity of voters'ID, which is ensured by a zero-knowledge proof of the notary organization CA. Charlie's supervision in the whole voting process can make the protocol satisfy verifiability and non-reusability so as to avoid Bob's dishonest behaviour. The security analysis shows that the voting protocol satisfies unforgeability, and has great advantages over some relevant researches. Additionally, the quantum operation can be transmitted successfully with the probability 1, which can make the protocol reliable and practical.

  19. Noise effect on fidelity of two-qubit teleportation

    International Nuclear Information System (INIS)

    We investigate the effect of noise on a class of four-qubit entangled channels for two-qubit teleportation from Alice to Bob. These entangled channels include both parallel Bell pairs and inseparable channels with genuine multipartite entanglement. For the situation where only Bob's share of the entangled channel is subject to decoherence, we show by deriving a general expression for the teleported state that teleportation using noisy inseparable channels is equivalent to teleportation using noisy Bell pairs. When Alice's qubits are also subject to noise, we find that the inseparable channels never give a higher teleportation fidelity than Bell pairs, even in the presence of collective noise. Our results can shed some light on practical two-qubit teleportation.

  20. Bidirectional controlled teleportation by using nine-qubit entangled state in noisy environments

    Science.gov (United States)

    Li, Yuan-hua; Jin, Xian-min

    2016-02-01

    A theoretical scheme is proposed to implement bidirectional quantum controlled teleportation (BQCT) by using a nine-qubit entangled state as a quantum channel, where Alice may transmit an arbitrary two-qubit state called qubits A_1 and A_2 to Bob; and at the same time, Bob may also transmit an arbitrary two-qubit state called qubits B_1 and B_2 to Alice via the control of the supervisor Charlie. Based on our channel, we explicitly show how the bidirectional quantum controlled teleportation protocol works. And we show this bidirectional quantum controlled teleportation scheme may be determinate and secure. Taking the amplitude-damping noise and the phase-damping noise as typical noisy channels, we analytically derive the fidelities of the BQCT process and show that the fidelities in these two cases only depend on the amplitude parameter of the initial state and the decoherence noisy rate.

  1. Notes on teleportation in an expanding space

    Energy Technology Data Exchange (ETDEWEB)

    Feng, Jun, E-mail: tsunfeng@iphy.ac.cn [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Yang, Wen-Li [Institute of Modern Physics, Northwest University, Xian 710069 (China); Zhang, Yao-Zhong [School of Mathematics and Physics, The University of Queensland, Brisbane, QLD 4072 (Australia); Fan, Heng, E-mail: hfan@iphy.ac.cn [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2013-02-26

    We investigate the quantum teleportation between a conformal detector Alice and an inertial detector Bob in de Sitter space in two schemes, (i) one uses free scalar modes and (ii) one utilizes cavity to store qubit. We show that the fidelity of the teleportation is degraded for Bob in both cases. While the fidelity-loss is due to the Gibbons–Hawking effect associated with his cosmological horizon in the scheme (i), the entanglement decreases in the scheme (ii) because the ability to entangle the cavities is reduced by the spacetime curvature. With a cutoff at Planck-scale, comparing with the standard Bunch–Davies choice, we also show that the possible Planckian physics cause extra modifications to the fidelity of the teleportation protocol in both schemes.

  2. The Onset of the Monsoon over the Bay of Bengal: The Year-to-Year Variations

    Institute of Scientific and Technical Information of China (English)

    YU Wei-Dong; LI Kui-Ping; SHI Jian-Wei; LIU Lin; WANG Hui-Wu; LIU Yan-Liang

    2012-01-01

    In situ buoy observation data spanning four years (2008-2011) were used to demonstrate the year-to-year variations of the monsoon onset processes in the Bay of Bengal (BOB). A significant early (late) monsoon onset event in 2009 (2010) was analyzed in detail. It is found that the year-to-year variations of monsoon onset can be attributed to either the interannual variability in the BoB SST or the irregular activities of the intra-seasonal oscillation (ISO). This finding raises concern over the potential difficulties in simulating or predicting the monsoon onset in the BoB region. This uncertainty largely comes from the unsatisfactory model behavior at the intra-seasonal time scale.

  3. Surface buoyancy flux in Bay of Bengal and Arabian Sea

    Directory of Open Access Journals (Sweden)

    G. Anitha

    2008-03-01

    Full Text Available The seasonal variation of thermal, haline, net surface buoyancy flux, the Monin-Obukhov length (M-O length, L and stability parameter, i.e. the ratio of M-O length to mixed layer depth (h were studied in the Bay of Bengal (BoB and the Arabian Sea (AS for the years 2003 and 2004 using Argo temperature and salinity profiles. The relative quantitative influence of winds to surface buoyancy and the applicability of scaling mixed layer using M-O length in BoB and AS was brought out. Rotation and light penetration modify the mixed layer depth from M-O length during shoaling in spring giving L/h<1.

  4. Pot Luck: Adventures in Archaeology, by Florence C. Lister. Foreword by R. Gwinn Vivian. University of New Mexico Press, Albuquerque, 1997

    Directory of Open Access Journals (Sweden)

    Bernard L. Fontana

    1998-11-01

    Full Text Available Over a period of nearly five decades, Florence Cline Lister and her husband, the late Robert Hill Lister, were a team whose light shown brightly over the ramparts of Southwest archaeology. Almost always referred to by others as "Bob and Florence," "Florence and Bob," or, simply, as "the Listers," their efforts toward unravelling mysteries of the region's prehistoric and colonial period past, in writing such historic accounts as that of the Mexican state of Chihua­hua, or in chronicling the lives of such Southwestern archaeologists as Earl Morris were nearly always a joint enter­prise. As with Hattie and Comelius "Burt" Cosgrove before them, and, further afield, Will and Ariel Durant, their names, like their shared interests, became melded into one.

  5. Improving the security of multiparty quantum secret sharing against Trojan horse attack

    CERN Document Server

    Deng, F G; Deng, Fu-Guo; Zhou, Hong-Yu

    2005-01-01

    Security of the multiparty quantum secret sharing (MQSS) protocol recently proposed by Zhang et al. [Phys. Rev. A \\textbf{71}, 044301 (2005)] is analyzed in the case that the agent who prepares the quantum signal, say Bob wants to eavesdrop the information about the unitary operations done by the other agent, Charlie by using a Trojan horse attack. Bob can replace the single-photon signal with a multi-photon one and Charlie cannot find this cheating as she does not measure the photons before they runs back from the boss Alice, which reveals that this MQSS protocol is not secure. Finally, we present a possible improvement of the MQSS protocol security with two single-photon measurements and four unitary operations.

  6. Timelike information broadcasting in cosmology

    CERN Document Server

    Blasco, Ana; Martin-Benito, Mercedes; Martin-Martinez, Eduardo

    2015-01-01

    We study the transmission of information and correlations through quantum fields in cosmological backgrounds. With this aim, we make use of quantum information tools to quantify the classical and quantum correlations induced by a quantum massless scalar field in two particle detectors, one located in the early universe (Alice's) and the other located at a later time (Bob's). In particular, we focus on two phenomena: a) the consequences on the transmission of information of the violations of the strong Huygens principle for quantum fields, and b) the analysis of the field vacuum correlations via correlation harvesting from Alice to Bob. We will study a standard cosmological model first and then assess whether these results also hold if we use other than the general relativistic dynamics. As a particular example, we will study the transmission of information through the Big Bounce, that replaces the Big Bang, in the effective dynamics of Loop Quantum Cosmology.

  7. Timelike information broadcasting in cosmology

    Science.gov (United States)

    Blasco, Ana; Garay, Luis J.; Martín-Benito, Mercedes; Martín-Martínez, Eduardo

    2016-01-01

    We study the transmission of information and correlations through quantum fields in cosmological backgrounds. With this aim, we make use of quantum information tools to quantify the classical and quantum correlations induced by a quantum massless scalar field in two particle detectors, one located in the early universe (Alice's) and the other located at a later time (Bob's). In particular, we focus on two phenomena: (a) the consequences on the transmission of information of the violations of the strong Huygens principle for quantum fields, and (b) the analysis of the field vacuum correlations via correlation harvesting from Alice to Bob. We will study a standard cosmological model first and then assess whether these results also hold if we use other than the general relativistic dynamics. As a particular example, we will study the transmission of information through the big bounce, that replaces the big bang, in the effective dynamics of loop quantum cosmology.

  8. Robust Anti-Collective Noise Quantum Secure Direct Dialogue Using Logical Bell States

    Science.gov (United States)

    Wu, Di; Lv, Hong-Jun; Xie, Guang-Jun

    2016-01-01

    In this paper we propose two quantum secure direct dialogue (QSDD) schemes with logical Bell states which can resist collective noise. The two users Alice and Bob encode their secret messages with the help of unitary operations. Compared with many quantum secure direct communication (QSDC), there is no strict information sender and receiver in these schemes, one logical Bell state can be operated twice by Alice and Bob based on what messages they prefer to encode. As a result, the two users are able to share their messages mutually, so the efficiency of communication is improved. By rearranging the order of particles and inserting decoy photons, our protocols are able to avoid the information leakage and detect eavesdropping, and they can be proved to have unconditional security.

  9. Security Weaknesses in Arbitrated Quantum Signature Protocols

    Science.gov (United States)

    Liu, Feng; Zhang, Kejia; Cao, Tianqing

    2014-01-01

    Arbitrated quantum signature (AQS) is a cryptographic scenario in which the sender (signer), Alice, generates the signature of a message and then a receiver (verifier), Bob, can verify the signature with the help of a trusted arbitrator, Trent. In this paper, we point out there exist some security weaknesses in two AQS protocols. Our analysis shows Alice can successfully disavow any of her signatures by a simple attack in the first protocol. Furthermore, we study the security weaknesses of the second protocol from the aspects of forgery and disavowal. Some potential improvements of this kind of protocols are given. We also design a new method to authenticate a signature or a message, which makes AQS protocols immune to Alice's disavowal attack and Bob's forgery attack effectively.

  10. Cryptanalysis of the arbitrated quantum signature protocols

    Science.gov (United States)

    Gao, Fei; Qin, Su-Juan; Guo, Fen-Zhuo; Wen, Qiao-Yan

    2011-08-01

    As a new model for signing quantum messages, arbitrated quantum signature (AQS) has recently received a lot of attention. In this paper we study the cryptanalysis of previous AQS protocols from the aspects of forgery and disavowal. We show that in these protocols the receiver, Bob, can realize existential forgery of the sender's signature under known message attack. Bob can even achieve universal forgery when the protocols are used to sign a classical message. Furthermore, the sender, Alice, can successfully disavow any of her signatures by simple attack. The attack strategies are described in detail and some discussions about the potential improvements of the protocols are given. Finally we also present several interesting topics on AQS protocols that can be studied in future.

  11. Cryptanalysis of the arbitrated quantum signature protocols

    CERN Document Server

    Gao, Fei; Guo, Fen-Zhuo; Wen, Qiao-Yan

    2011-01-01

    As a new model for signing quantum message, arbitrated quantum signature (AQS) has recently received a lot of attention. In this paper we study the cryptanalysis of previous AQS protocols from the aspects of forgery and disavowal. We show that in these protocols the receiver Bob can realize existential forgery of the sender's signature under known message attack. Bob can even achieve universal forgery when the protocols are used to sign a classical message. Furthermore, the sender Alice can successfully disavow any of her signatures by simple attack. The attack strategies are described in detail and some discussions about the potential improvements of the protocols are given. Finally we also present several interesting topics in future study on AQS protocols.

  12. Computationally Secure Pattern Matching in the Presence of Malicious Adversaries

    DEFF Research Database (Denmark)

    Hazay, Carmit; Toft, Tomas

    2014-01-01

    We propose a protocol for the problem of secure two-party pattern matching, where Alice holds a text t∈{0,1}∗ of length n, while Bob has a pattern p∈{0,1}∗ of length m. The goal is for Bob to (only) learn where his pattern occurs in Alice’s text, while Alice learns nothing. Private pattern matching...... is an important problem that has many applications in the area of DNA search, computational biology and more. Our construction guarantees full simulation in the presence of malicious, polynomial-time adversaries (assuming the hardness of DDH assumption) and exhibits computation and communication costs of O...... for important variations of the secure pattern matching problem that are significantly more efficient than the current state of art solutions: First, we deal with secure pattern matching with wildcards. In this variant the pattern may contain wildcards that match both 0 and 1. Our protocol requires O...

  13. Measurement of marine productivity using 15N and 13C tracers: Some methodological aspects

    Indian Academy of Sciences (India)

    Naveen Gandhi; Sanjeev Kumar; S Prakash; R Ramesh; M S Sheshshayee

    2011-02-01

    Various experiments involving the measurement of new, regenerated and total productivity using 15N and 13C tracers were carried out in the Bay of Bengal (BOB) and in the Arabian Sea. Results from 15N tracer experiments indicate that nitrate uptake can be underestimated by experiments with incubation time > 4 hours. Indirect evidence suggests pico- and nano-phytoplankton, on their dominance over microphytoplankton, can also influence the f-ratios. Difference in energy requirement for assimilation of different nitrogen compounds decides the preferred nitrogen source during the early hours of incubation. Variation in light intensity during incubation also plays a significant role in the assimilation of nitrogen. Results from time course experiments with both 15N and 13C tracers suggest that photoinhibition appears significant in BOB and the Arabian Sea during noon. A significant correlation has been found in the productivity values obtained using 15N and 13C tracers.

  14. Ice berg cracking events as identified from underwater ambient noise measurements in the shallow waters of Ny-Alesund, Arctic

    Science.gov (United States)

    Ashokan, M.; Latha, G.; Thirunavukkarasu, A.; Raguraman, G.; Venkatesan, R.

    2016-06-01

    This paper presents the work carried out on the analysis of preliminary underwater ambient noise measurements in the shallow waters of Kongsfjorden fjord, Arctic in the summer season, in which the ice berg cracking noise is identified. In the summer period, the melting of ice cover is fast and hence the ice bergs are free to move and float in the ocean. Underwater ambient noise has been acquired in the Kongsfjorden fjord, Arctic sea on 19th July 2015 at 5 m water depth, where the ocean depth is 50 m. Due to the tensile cracks at the surface of the sea ice by thermal expansion, ice berg calving and bobbing occurred near the experiment site. Analysis of power spectra shows that ice berg calving noise falls in the frequency band 100 Hz-500 Hz and the ice berg bobbing noise falls in the frequency band 200 Hz-400 Hz.

  15. Quantum Information Splitting of Arbitrary Three-Qubit State by Using Seven-Qubit Entangled State

    Science.gov (United States)

    Li, Dong-fen; Wang, Rui-jin; Zhang, Feng-li; Deng, Fu-hu

    2015-06-01

    In this paper, we propose a scheme of quantum information splitting arbitrary three-qubit state by using seven-qubit entangled as quantum channel. The sender Alice first performs Bell-state measurements (BSMs) on her qubits pairs respectively and tells her measurement outcome to authorizers Bob to reconstruct the original state, then Charlie should carries out single-qubit measurement (SQM) on his qubits. According to the results from Alice and Charlie, Bob can reconstruct the original state by applying an appropriate unitary operation. After analyzing, the method achieved the desired effect of quantum information splitting (QIS). We also realize the QIS of arbitrary three-qubit state in cavity quantum electrodynamics (QED).

  16. A posteriori teleportation

    CERN Document Server

    Braunstein, S L; Braunstein, Samuel L.

    1998-01-01

    The article by Bouwmeester et al. on experimental quantum teleportation constitutes an important advance in the burgeoning field of quantum information. The experiment was motivated by the proposal of Bennett et al. in which an unknown quantum state is `teleported' by Alice to Bob. As illustrated in Fig. 1, in the implementation of this procedure, by Bouwmeester et al., an input quantum state is `disembodied' into quantum and classical components, as in the original protocol. However, in contrast to the original scheme, Bouwmeester et al.'s procedure necessarily destroys the state at Bob's receiving terminal, so a `teleported' state can never emerge as a freely propagating state for subsequent examination or exploitation. In fact, teleportation is achieved only as a postdiction.

  17. The operational meaning of quantum conditional information

    CERN Document Server

    Devetak, I; Devetak, Igor; Yard, Jon

    2006-01-01

    With a statistical view towards information and noise, information theory derives ultimate limitations on information processing tasks. These limits are generally expressed in terms of entropic measures of information and correlations. Here we answer the quantum information-theoretic question: ``How correlated are two quantum systems from the perspective of a third?" by solving the following `quantum state redistribution' problem. Given an arbitrary quantum state of three systems, where Alice holds two and Bob holds one, what is the cost, in terms of quantum communication and entanglement, for Alice to give one of her parts to Bob? The communication cost gives the first operational interpretation to quantum conditional mutual information. The optimal procedure is self-dual under time reversal and is perfectly composable. This generalizes known protocols such as the state merging and fully quantum Slepian-Wolf protocols, from which almost every known protocol in quantum Shannon theory can be derived.

  18. Entanglement and final state of a black hole under general unitary transformation

    CERN Document Server

    Ahn, Doyeol

    2010-01-01

    Final state of a black hole is studied by taking into account a general unitary evolution of a black hole matter state. It is found that the mixedness decreases under general unitary transformation when the initial matter state was in mixed state and the mean fidelity at the evaporation is smaller than the fidelity of the quantum teleportation by the factor of inverse square of the number of states of a black hole. The change of entanglement Alice-Bob pair at evaporation is also studied by calculating the entanglement fidelity and eigenvalues of the partial transposed block density matrix. We assumed that Alice fell onto the black hole when the hole was formed while Bob is maintaining the safe distance from the black hole. It is found that the entanglement fidelity is inversely proportional to the square of the Hilbert space dimension N and the entanglement can survive the evaporation process.

  19. Secure quantum communication using classical correlated channel

    Science.gov (United States)

    Costa, D.; de Almeida, N. G.; Villas-Boas, C. J.

    2016-10-01

    We propose a secure protocol to send quantum information from one part to another without a quantum channel. In our protocol, which resembles quantum teleportation, a sender (Alice) and a receiver (Bob) share classical correlated states instead of EPR ones, with Alice performing measurements in two different bases and then communicating her results to Bob through a classical channel. Our secure quantum communication protocol requires the same amount of classical bits as the standard quantum teleportation protocol. In our scheme, as in the usual quantum teleportation protocol, once the classical channel is established in a secure way, a spy (Eve) will never be able to recover the information of the unknown quantum state, even if she is aware of Alice's measurement results. Security, advantages, and limitations of our protocol are discussed and compared with the standard quantum teleportation protocol.

  20. Quantum hacking of a continuous-variable quantum-key-distribution system using a wavelength attack

    Science.gov (United States)

    Huang, Jing-Zheng; Weedbrook, Christian; Yin, Zhen-Qiang; Wang, Shuang; Li, Hong-Wei; Chen, Wei; Guo, Guang-Can; Han, Zheng-Fu

    2013-06-01

    The security proofs of continuous-variable quantum key distribution are based on the assumptions that the eavesdropper can neither act on the local oscillator nor control Bob's beam splitter. These assumptions may be invalid in practice due to potential imperfections in the implementations of such protocols. In this paper, we consider the problem of transmitting the local oscillator in a public channel and propose a wavelength attack which allows the eavesdropper to control the intensity transmission of Bob's beam splitter by switching the wavelength of the input light. Specifically we target continuous-variable quantum key distribution systems that use the heterodyne detection protocol using either direct or reverse reconciliation. Our attack is proved to be feasible and renders all of the final keys shared between the legitimate parties insecure, even if they have monitored the intensity of the local oscillator. To prevent our attack on commercial systems, a simple wavelength filter should be randomly added before performing monitoring detection.

  1. Using brand characters to promote young children's liking of and purchase requests for fruit.

    Science.gov (United States)

    de Droog, Simone M; Valkenburg, Patti M; Buijzen, Moniek

    2011-01-01

    The aim of this experiment was to investigate whether brand characters can enhance children's liking of and purchase request intent for fruit compared to candy. The authors assigned 216 preschool students between the ages of 4 and 6 years to 9 experimental conditions in which they were presented with a healthy snack (chopped bananas) and an unhealthy snack (banana candy). The packages of these snacks portrayed a familiar character (i.e., Dora from Dora the Explorer or SpongeBob from SpongeBob SquarePants), an unfamiliar character, or no character (control group). The authors' results showed that brand characters can increase children's liking of and purchase request intent for fruit up to a level similar to candy. However, the effects on liking and purchase request intent did not differ between familiar and unfamiliar characters. These results may be helpful for future marketing campaigns to promote children's consumption of healthy foods. PMID:21058143

  2. Teleportation of the one-qubit state with environment-disturbed recovery operations

    CERN Document Server

    Hu, Ming-Liang

    2011-01-01

    We study standard protocol $\\mathcal{P}_0$ for teleporting the one-qubit state with both the transmission process of the two qubits constitute the quantum channel and the recovery operations performed by Bob disturbed by the decohering environment. The results revealed that Bob's imperfect operations do not eliminate the possibility of nonclassical teleportation fidelity provided he shares an ideal channel state with Alice, while the transmission process is constrained by a critical time $t_{0,c}$ longer than which will result in failure of $\\mathcal{P}_0$ if the two qubits are corrupted by the decohering environment. Moreover, we found that under the condition of the same decoherence rate $\\gamma$, the teleportation protocol is significantly more fragile when it is executed under the influence of the noisy environment than those under the influence of the dissipative and dephasing environments.

  3. Démonstration expérimentale d'une distribution quantique de clé par codage temporel

    Science.gov (United States)

    Boucher, W.; Debuisschert, T.

    2006-10-01

    Nous avons démontré expérimentalement la transmission quantique de clé par codage temporel. Alice envoie des impulsions cohérentes atténuées. La clé est codée dans l'instant de détection des photons chez Bob. Une mesure de la durée de cohérence par moyen interférométrique permet d'assurer un fonctionnement en régime quantique. Nous avons mesuré un taux d'erreur quantique de 3.3% et une chute relative de contraste de l'interféromètre de 8.4%. Ces valeurs permettent d'évaluer un avantage d'information de 0.49 bit/impulsion pour Alice et Bob par rapport à un espion éventuel.

  4. The Rain Keeps Falling

    Directory of Open Access Journals (Sweden)

    Deborah Rose

    2013-08-01

    Full Text Available The force of disaster hit me in the heart when, as a young woman, I heard Bob Dylan sing ‘Hard Rain’. In a voice stunned by violence, the young man reports on a multitude of forces that drag the world into catastrophe. In the 1960s I heard the social justice in the song. In 2004 the environmental issues ambush me. The song starts and ends in the dying world of trees and rivers. The poet’s words in both domains of justice are eerily prophetic. They call across the music, and across the years, saying that a hard rain is coming. The words bear no story at all; they give us a series of compelling images, an account of impending calamity. The artistry of the poet—Bob (Billy Boy Dylan—offers sequences of reports that, like Walter Benjamin’s storm from paradise, pile wreckage upon wreckage.

  5. Dynamics of Entropy in Quantum-like Model of Decision Making

    Science.gov (United States)

    Basieva, Irina; Khrennikov, Andrei; Asano, Masanari; Ohya, Masanori; Tanaka, Yoshiharu

    2011-03-01

    We present a quantum-like model of decision making in games of the Prisoner's Dilemma type. By this model the brain processes information by using representation of mental states in complex Hilbert space. Driven by the master equation the mental state of a player, say Alice, approaches an equilibrium point in the space of density matrices. By using this equilibrium point Alice determines her mixed (i.e., probabilistic) strategy with respect to Bob. Thus our model is a model of thinking through decoherence of initially pure mental state. Decoherence is induced by interaction with memory and external environment. In this paper we study (numerically) dynamics of quantum entropy of Alice's state in the process of decision making. Our analysis demonstrates that this dynamics depends nontrivially on the initial state of Alice's mind on her own actions and her prediction state (for possible actions of Bob.)

  6. Molecular characters and morphological genetics of CAL gene in Chinese cabbage

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    BcpCAL, the homologous gene of CAL, was isolated from Chinese cabbage. Unlike BobCAL of cauliflower, BcpCAL did not hold the terminating mutation in the fifth exon. After crosses of cauliflower with Chinese cabbage, the resultant hybrids failed to form curd, which implicates the genetic complement of BcpCAL to the mutated Bob CAL in the function of curd formation. One of CAL gene isolated from the hybrid apparently comes from the female parent (Chinese cabbage) even though there are a few of the bases substituted and deleted. The result offers the molecular and genetic evidences for the study of biological function of CAL in morphological genetics of curd.

  7. Secure quantum communication using classical correlated channel

    Science.gov (United States)

    Costa, D.; de Almeida, N. G.; Villas-Boas, C. J.

    2016-07-01

    We propose a secure protocol to send quantum information from one part to another without a quantum channel. In our protocol, which resembles quantum teleportation, a sender (Alice) and a receiver (Bob) share classical correlated states instead of EPR ones, with Alice performing measurements in two different bases and then communicating her results to Bob through a classical channel. Our secure quantum communication protocol requires the same amount of classical bits as the standard quantum teleportation protocol. In our scheme, as in the usual quantum teleportation protocol, once the classical channel is established in a secure way, a spy (Eve) will never be able to recover the information of the unknown quantum state, even if she is aware of Alice's measurement results. Security, advantages, and limitations of our protocol are discussed and compared with the standard quantum teleportation protocol.

  8. Demonstration of the blood-ocular barrier integrity by contrast-enhanced MR imaging: A preliminary study

    International Nuclear Information System (INIS)

    In five Rhesus monkeys we assessed the potential for monitoring the blood-ocular barrier (BOB) with Gd-DTPA-enhanced MR imaging. Unilateral opening of the BOB was achieved by infusion of mannitol into the internal carotid artery. This was followed immediately by Gd-DTPA, 0.2 mmol/kg, given intravenously. T-l weighted MR images (Picken unit, 0.5 T, SE 500/40, 5-mm thickness, 15cm FOV) obtained before and within one-half hour after injection of Gd-DTPA demonstrated marked enhancement (2-to 17-fold) of the anterior and posterior chambers of the challenged eye, representing leakage of Gd-DTPA into those chambers. Animals remained free of ocular side effects

  9. Quantum Key Distribution Scheme Based on Dense Encoding in Entangled States

    Institute of Scientific and Technical Information of China (English)

    ZHANG Xiao-Long; ZHANG Yue-Xia; GAO Ke-Lin

    2005-01-01

    A quantum key distribution protocol, based on the quantum dense encoding in entangled states, is presented. In this protocol, we introduce an encoding process to encode two classical bits information into one of the four one-qubit unitary operations implemented by Alice and the Bell states measurement implemented by Bob in stead of direct measuring the previously shared Einstein-Podolsky-Rosen pairs by both of the distant parties, Alice and Bob.Considering the practical application we can get the conclusion that our protocol has some advantages. It not only simplifies the measurement which may induce potential errors, but also improves the effectively transmitted rate of the generated qubits by the raw key. Here we also discuss eavesdropping attacks against the scheme and the channel loss.

  10. Device-independent two-party cryptography secure against sequential attacks

    DEFF Research Database (Denmark)

    Kaniewski, Jedrzej; Wehner, Stephanie

    2016-01-01

    The goal of two-party cryptography is to enable two parties, Alice and Bob, to solve common tasks without the need for mutual trust. Examples of such tasks are private access to a database, and secure identification. Quantum communication enables security for all of these problems in the noisy......-storage model by sending more signals than the adversary can store in a certain time frame. Here, we initiate the study of device-independent (DI) protocols for two-party cryptography in the noisy-storage model. Specifically, we present a relatively easy to implement protocol for a cryptographic building block...... known as weak string erasure and prove its security even if the devices used in the protocol are prepared by the dishonest party. DI two-party cryptography is made challenging by the fact that Alice and Bob do not trust each other, which requires new techniques to establish security. We fully analyse...

  11. On Unconditionally Secure Computation with Vanishing Communication Cost

    CERN Document Server

    Wang, Ye; Sun, Wei; Ishwar, Prakash

    2010-01-01

    We propose a novel distortion-theoretic approach to a secure three-party computation problem. Alice and Bob have deterministic sequences, and Charlie wishes to compute a normalized sum-type function of those sequences. We construct three-party protocols that allow Charlie to compute the function with arbitrarily high accuracy, while maintaining unconditional privacy for Alice and Bob and achieving vanishing communication cost. This work leverages a striking dimensionality reduction that allows a high accuracy estimate to be produced from only a random subsampling of the sequences. The worst-case distortion of the estimate, across all arbitrary deterministic sequences of any length, is independent of the dimensionality (length) of the sequences and proportional to inverse square root of the number of samples that the estimate is based upon.

  12. China's Wealth: First National Economic Census

    Institute of Scientific and Technical Information of China (English)

    LUOYUANJUN

    2005-01-01

    ""When I first arrived in Beijing, I felt China was already a developed country."" This was American traveler Bob's first impression of China. But as he found out,first impressions aren't always true. ""When I saw western China, I got confused; the economic situation there is completely different from that of the capital.I really wonder what the true state of the Chinese economy is."" Bob is not alone.The Chinese economy has become the subject of much global debate. In 2004, the Chinese central government carried out a national economic census covering Chinese business and industry.Its aim was to collect a comprehensive range of accurate economic data in order to get a clearer picture of the country's economic make-up.

  13. Does the balance scorecard work: an empirical investigation

    OpenAIRE

    Neely, Andrew

    2008-01-01

    Commentators suggest that between 30 and 60% of large US firms have adopted the Balanced Scorecard, first described by Bob Kaplan and David Norton in their seminal Harvard Business Review paper of 1992 (Kaplan and Norton, 1992; Marr et al, 2004). Empirical evidence that explores the performance impact of the balanced scorecard, however, is extremely rare and much that is available is anecdotal at best. This paper reports a study that set out to explore the performance impact of...

  14. Time reversal and exchange symmetries of unitary gate capacities

    OpenAIRE

    Harrow, Aram W.; Shor, Peter W.

    2005-01-01

    Unitary gates are an interesting resource for quantum communication in part because they are always invertible and are intrinsically bidirectional. This paper explores these two symmetries: time-reversal and exchange of Alice and Bob. We will present examples of unitary gates that exhibit dramatic separations between forward and backward capacities (even when the back communication is assisted by free entanglement) and between entanglement-assisted and unassisted capacities, among many others...

  15. OCA-B integrates B cell antigen receptor-, CD40L- and IL 4-mediated signals for the germinal center pathway of B cell development.

    OpenAIRE

    Qin, X F; Reichlin, A; Luo, Y.; Roeder, R. G.; Nussenzweig, M.C.

    1998-01-01

    Many of the key decisions in lymphocyte differentiation and activation are dependent on integration of antigen receptor and co-receptor signals. Although there is significant understanding of these receptors and their signaling pathways, little is known about the molecular requirements for signal integration at the level of activation of gene expression. Here we show that in primary B cells, expression of the B-cell specific transcription coactivator OCA-B (also known as OBF-1 or Bob-1) is re...

  16. Podnikání ve stravovacích službách ve Spojených státech amerických

    OpenAIRE

    Winkelhöferová, Klára

    2012-01-01

    The aim of this diploma thesis is to analyse the restaurant business environment in the United States of America and on the basis of the comparison to enterprise in the Czech Republic point out main common and different features. Another part characterizes a selected food establishment of Bob Evans Restaurant in Dover, state of Delaware. The thesis defines basic terms connected to restaurant business, it introduces the history and current position of the USA, eating habits and conditions rela...

  17. Non-Gaussian continuous-variable teleportation

    OpenAIRE

    Marian, Paulina; Marian, Tudor A.

    2008-01-01

    We have recently shown that the output field in the Braunstein-Kimble protocol of teleportation is a superposition of two fields: the input one and a field created by Alice's measurement and by displacement of the state at Bob's station by using the classical information provided by Alice. We study here the noise added by teleportation and compare its influence in the Gaussian and non-Gaussian settings.

  18. Quantum teleportation scheme by selecting one of multiple output ports

    OpenAIRE

    Ishizaka, Satoshi; Hiroshima, Tohya

    2009-01-01

    The scheme of quantum teleportation, where Bob has multiple (N) output ports and obtains the teleported state by simply selecting one of the N ports, is thoroughly studied. We consider both deterministic version and probabilistic version of the teleportation scheme aiming to teleport an unknown state of a qubit. Moreover, we consider two cases for each version: (i) the state employed for the teleportation is fixed to a maximally entangled state, and (ii) the state is also optimized as well as...

  19. Quantum teleportation with nonclassical correlated states in noninertial frames

    OpenAIRE

    Mehri-Dehnavi, Hossein; Rahimi, Robabeh; Mohammadzadeh, Hosein; Ebadi, Zahra; Mirza, Behrouz

    2012-01-01

    Quantum teleportation is studied in noninertial frame, for fermionic case, when Alice and Bob share a general nonclassical correlated state. In noninertial frames two fidelities of teleportation are given. It is found that the average fidelity of teleportation from a separable and nonclassical correlated state is increasing with the amount of nonclassical correlation of the state. However, for any particular nonclassical correlated state, the fidelity of teleportation decreases by increasing ...

  20. The emissions reduction commitments set out by the U.S. and China are welcome steps towards avoiding dangerous climate change

    OpenAIRE

    Ward, Bob

    2014-01-01

    On 12 November President Obama and China’s President Xi Jinping announced a commitment that the two countries would reduce their greenhouse gas emissions beyond what had been previously promised. Bob Ward looks at the agreement, writing that while it bodes well for next year’s Paris climate change summit, stronger commitments will be needed for emissions to stay below the warming limit.

  1. Contextualizing Homeschooling Data: A Response to Rudner

    OpenAIRE

    Kariane Mari Welner; Kevin G. Welner

    1999-01-01

    Rudner (1999) presents the results of a survey and testing program, administered by Bob Jones University (BJU), for homeschooling students. In this response, we applaud Rudner's contribution to building a greater understanding of the homeschooling movement. However, we also voice a strong concern that what Rudner contributed with one hand, he took back with the other. We contend that Rudner's analysis of the BJU data fails to offer a straightforward explanation of important and striking limit...

  2. Bringing inorganic chemistry to life with inspiration from R. J. P. Williams

    OpenAIRE

    Hill, H. Allen O.; Sadler, Peter J.

    2016-01-01

    Our appreciation of the scholarly ideas and thinking of Bob Williams is illustrated here by a few of the areas in which he inspired us. His journey to bring inorganic chemistry to life began with an early interest in analytical chemistry, rationalising the relative stabilities of metal coordination complexes (The Irving-Williams Series), and elucidating the organometallic redox chemistry of vitamin B12. He (and Vallee) recognised that metal ions are in energised (entatic) states in proteins a...

  3. Signing of the agreement between CERN and the United States in 1997

    CERN Multimedia

    1997-01-01

    Signing of the agreement between CERN and the United States for a contribution of $531 million to the Large Hadron Collider (LHC) project. The agreement was signed by Matha Krebs, Director of the Office of Energy Research, DOE, Bob Eisenstein, Assistant Director of Physical and Mathematical Science, NSF, and Christopher Llewellyn Smith, former Director-General of CERN at the Council session in December 1997. At the same occasion the USA was granted Observer Status at CERN.

  4. Signing of the agreement between CERN and the United States

    CERN Multimedia

    1997-01-01

    Siging of the agreement between CERN and the United States for a contribution of $531 million to the Large Hadron Collider (LHC) project. The Agreement was signed by Dr. Matha Krebs, Director of the Office of Energy Research, DOE, Dr Bob Eisenstein, Assistant Director of Physical and Mathematical Science, NSF, and Prof. Christopher Llewellyn Smith, Director General of CERN at the Council session in December 1997. At the same occasion, the USA was granted Observer Status at CERN.

  5. Secure communication in fiber optic systems via transmission of broad-band optical noise.

    Science.gov (United States)

    Buskila, O; Eyal, A; Shtaif, M

    2008-03-01

    We propose a new scheme for data encryption in the physical layer. Our scheme is based on the distribution of a broadband optical noise-like signal between Alice and Bob. The broadband signal is used for the establishment of a secret key that can be used for the secure transmission of information by using the one-time-pad method. We characterize the proposed scheme and study its applicability to the existing fiber-optics communications infrastructure.

  6. A New Quantum Secure Direct Communication Protocol Using Decoherence-Free Subspace

    Institute of Scientific and Technical Information of China (English)

    GE Hua; LIU Wen-Yu

    2007-01-01

    A new quantum secure direct communication (QSDC) protocol is proposed by using decoherence free subspace (DFS) to avoid insecurity of the present QSDC protocols in a quantum noise channel. This protocol makes it easily for Bob and Alice to find eavesdropping in channel because the collective dephasing noise disappears in DFS. The probability of successful attack by Eve in this protocol is smaller than in BB84 protocol. Thus this protocol realizes secure QSDC and is feasible with present-day technology.

  7. Electrolytes for lithium ion batteries

    Energy Technology Data Exchange (ETDEWEB)

    Vaughey, John; Jansen, Andrew N.; Dees, Dennis W.

    2014-08-05

    A family of electrolytes for use in a lithium ion battery. The genus of electrolytes includes ketone-based solvents, such as, 2,4-dimethyl-3-pentanone; 3,3-dimethyl 2-butanone(pinacolone) and 2-butanone. These solvents can be used in combination with non-Lewis Acid salts, such as Li.sub.2[B.sub.12F.sub.12] and LiBOB.

  8. Spain’s labour market reforms are unlikely to lead to economic growth or a drop in unemployment

    OpenAIRE

    Hancké, Bob

    2013-01-01

    In early 2012, Spain introduced labour market reforms aimed at boosting competitiveness and economic performance. Bob Hancké looks at recent claims that these reforms have started to boost the Spanish economy, finding that they may have boosted productivity at the expense of weaker companies that have been affected by the crisis. He writes that as long as productivity growth outstrips economic growth, it is unlikely that unemployment will fall.

  9. "Ta!"酸梅奖

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    朱莉前夫之女被控误杀1岁女童 安吉丽娜·朱莉(Angelina Jolie)前夫比利·鲍伯·松顿(Billy Bob Thornton)的长女阿曼达·布鲁姆菲尔乐德(Amanda Brumfield),日前被控误杀1岁女童奥莉维亚(Olivia)。

  10. Human resource challenges in home care: Putting client need first

    OpenAIRE

    Attfield, Bob

    2012-01-01

    This video clip comprises one of the 4 presentations of the PANEL SESSION: “Human Resource Challenges in Home Care” held at the 21st Annual John K. Friesen Conference, "Innovations in Home Care: A Public Policy Perspective," MAY 16-17, 2012, Vancouver, BC. Presented by Bob Attfield, Regional Director Western Canada, We Care Home Health Services. It is well known that jurisdictions with more comprehensive and integrated home care delivery systems are able to extend independent living f...

  11. Quantum Key Distribution Protocol with User Authentication

    CERN Document Server

    Lee, H; Lee, D; Lim, J; Yang, H J; Lee, Hwayean; Lee, Sangjin; Lee, Donghoon; Lim, Jongin; Yang, HyungJin

    2005-01-01

    We propose a quantum key distribution protocol with quantum based user authentication. User authentication is executed by validating the correlation of GHZ states. Alice and Bob can distribute a secure key using the remaining GHZ states after authentication. This secret key does not leak even to the arbitrator by the properties of the entanglement. We will show that our protocol is secure against the cloning attack.

  12. Wi likkle but wi tallawah : narratives of nation branding: intellectual property governance and identity politics in Jamaica

    OpenAIRE

    2008-01-01

    The structure of this thesis is fourfold, yet intrinsically intertwined. Firstly, it identifies and examines in detail Jamaica’s strong and highly identifiable worldwide image and symbolic narrative. On the one hand, Jamaica is the home of Bob Marley, reggae and Rastafarianism, as well as being a tropical sultry island-dream boasting sun, sand and sea. On the other hand, Jamaica is also associated with violent crime and virulent homophobia. Based on the romanticized and imaginary notion that ...

  13. Impact of Frozen Storage on the Anthocyanin and Polyphenol Content of American Elderberry Fruit Juice

    OpenAIRE

    Johnson, Mitch C.; Thomas, Andrew L.; Greenlief, C. Michael

    2015-01-01

    The effects of frozen storage on the anthocyanin and polyphenol content of elderberry fruit juice are investigated. Juice from three genotypes of American elderberry (Adams II, Bob Gordon, and Wyldewood) was screened for total phenolic (TP) and total monomeric anthocyanin (TMA) content with spectrophotometric methods. The individual anthocyanin content (IAC) of the juice was tested by coupling solid phase extraction with ultra-performance liquid chromatography/tandem mass spectrometry. Juice ...

  14. Detecting faked continuous variable entanglement using one-sided device-independent entanglement witnesses

    OpenAIRE

    Opanchuk, Bogdan; Arnaud, Ludovic; Reid, Margaret D.

    2013-01-01

    We demonstrate the principle of one-sided device-independent continuous variable (CV) quantum information. In situations of no trust, we show by enactment how the use of standard CV entanglement criteria can mislead Charlie into thinking Alice and Bob share entanglement, when the data is actually generated classically using a Local Hidden Variable theory based on the Wigner function. We distinguish between criteria that demonstrate CV entanglement, and criteria that demonstrate the CV Einstei...

  15. Letter to the Editor: Robert W. Evans

    Science.gov (United States)

    Johnston, A.

    2000-12-01

    I read the Letters page of the latest issue of the JBAA (2000 October) with some amusement. My very good friend Bob Evans had, according to the letter header, not only been elevated to the clergy, but had also transferred his nationality from Kiwi to Aussie. While he'll probably overlook the religious error he may not be so sanguine about being mistaken for an Australian.

  16. Experimental Quantum Key Distribution over 14.8 km in a Special Optical Fibre

    Institute of Scientific and Technical Information of China (English)

    桂有珍; 韩正甫; 莫小范; 郭光灿

    2003-01-01

    We present an experimental set-up for quantum key distribution in a special optical fibre at the wavelength of850nm. The system employs the BB84 protocol to establish a secret key between Alice and Bob over 14.8km.The key is encoded in the phase of very weak laser of average photon number 0.11 per pulse. The measured error rate is lower than 10%.

  17. Partial list of bipartite Bell inequalities with four binary settings

    Energy Technology Data Exchange (ETDEWEB)

    Brunner, Nicolas [Group of Applied Physics, University of Geneva (Switzerland)], E-mail: nicolas.brunner@physics.unige.ch; Gisin, Nicolas [Group of Applied Physics, University of Geneva (Switzerland)

    2008-04-28

    We give a partial list of 26 tight Bell inequalities for the case where Alice and Bob choose among four two-outcome measurements. All tight Bell inequalities with less settings are reviewed as well. For each inequality we compute numerically the maximal quantum violation, the resistance to noise and the minimal detection efficiency required for closing the detection loophole. Surprisingly, most of these inequalities are outperformed by the CHSH inequality.

  18. Quantum hacking on a practical continuous-variable quantum cryptosystem by inserting an external light

    Science.gov (United States)

    Qin, Hao; Kumar, Rupesh; Alleaume, Romain

    2015-10-01

    We report here a new side channel attack on a practical continuous-variable (CV) quantum key distribution (QKD) system. Inspired by blinding attack in discrete-variable QKD, we formalize an attack strategy by inserting an external light into a CV QKD system implemented Gaussian-modulated coherent state protocol and show that our attack can compromise its practical security. In this attack, we concern imperfections of a balanced homodyne detector used in CV QKD. According to our analysis, if one inserts an external light into Bob's signal port, due to the imperfect subtraction from the homodyne detector, the leakage of the external light contributes a displacement on the homodyne signal which causes detector electronics saturation. In consequence, Bob's quadrature measurement is not linear with the quadrature sent by Alice. By considering such vulnerability, a potential Eve can launch a full intercept-resend attack meanwhile she inserts an external light into Bob's signal port. By selecting proper properties of the external light, Eve actively controls the induced displacement value from the inserted light which results saturation of homodyne detection. In consequence, Eve can bias the excess noise due to the intercept-resend attack and the external light, such that Alice and Bob believe their excess noise estimation is below the null key threshold and they can still share a secret key. Our attack shows that the detector loopholes also exist in CV QKD, and it seems influence all the CV QKD systems using homodyne detection, since all the practical detectors have finite detection range.

  19. 美杜莎的情人:卢·里德

    Institute of Scientific and Technical Information of China (English)

    王伟滨

    2010-01-01

    如果将音乐人与文学家作一类比.深沉的LouReed(卢·里德)之于豪放的Bob Dylant(鲍勃·迪伦).大概相当于阴郁的Edgar Allan Poe(爱伦·坡)之于激情的Walt Whitman(沃尔特·惠特曼)。

  20. Mach-Zehnder interferometer and the teleporter

    Science.gov (United States)

    Ralph, T. C.

    2000-04-01

    We suggest a self-testing teleportation configuration for photon qubits based on a Mach-Zehnder interferometer. That is, Bob can tell how well the input state has been teleported without knowing what that input state was. One could imagine building a ``locked'' teleporter based on this configuration. The analysis is performed for continuous variable teleportation but the arrangement could be applied equally to discrete manipulations.

  1. Probabilistic Teleportation of an Arbitrary Two-Particle State and Its Quantum Circuits

    Institute of Scientific and Technical Information of China (English)

    GUO Zhan-Ying; FANG Jian-Xing; ZHU Shi-Qun; QIAN Xue-Min

    2006-01-01

    Two simple schemes for probabilistic teleportation of an arbitrary unknown two-particle state using a non-maximally entangled EPR pair and a non-maximally entangled GHZ state as quantum channels are proposed.After receiving Alice's Bell state measurement results, Bob performs a collective unitary transformation on his inherent particles without introducing the auxiliary qubit. The original state can be probabilistically teleported. Meanwhile,quantum circuits for realization of successful teleportation are also presented.

  2. The Mach-Zehnder and the Teleporter

    OpenAIRE

    Ralph, T.C.

    1999-01-01

    We suggest a self-testing teleportation configuration for photon q-bits based on a Mach-Zehnder interferometer. That is, Bob can tell how well the input state has been teleported without knowing what that input state was. One could imagine building a "locked" teleporter based on this configuration. The analysis is performed for continuous variable teleportation but the arrangement could equally be applied to discrete manipulations.

  3. Book review: who is worthy of protection? Gender-based asylum and US immigration politics by Meghana Nayak

    OpenAIRE

    Kao, M. Bob

    2016-01-01

    In Who is Worthy of Protection? Gender-Based Asylum and US Immigration Politics, Meghana Nayak examines gender-based asylum in the United States, focusing on the narratives through which certain asylees are framed as being more ‘worthy’ than others. While M. Bob Kao welcomes Nayak’s recommendations regarding how feminist scholars can productively intervene in the asylum process, he nonetheless questions whether all of these arguments can be equally put into practice by lawyers navigating the ...

  4. Pile-ou-face et mise-en-gage de bit quantique : bornes optimales, constructions pratiques et sécurité calculatoire

    OpenAIRE

    Chailloux, André

    2011-01-01

    Quantum computing allows us to revisit the study of quantum cryptographic primitives with information theoretic security. In 1984, Bennett and Brassard presented a protocol of quantum key distribution. In this protocol, Alice and Bob cooperate in order to share a common secret key k, which has to be unknown for a third party that has access to the communication channel. They showed how to perform this task quantumly with an information theoretic security; which is impossible classically.In my...

  5. The XXIIIrd Phage/Virus Assembly Meeting

    OpenAIRE

    Serwer, Philip

    2014-01-01

    The XXIIIrd Phage/Virus Assembly (PVA) meeting returned to its birthplace in Lake Arrowhead, CA on September 8–13, 2013 (Fig. 1). The original meeting occurred in 1968, organized by Bob Edgar (Caltech, Pasadena, CA USA), Fred Eiserling (University of California, Los Angeles, Los Angeles, CA USA) and Bill Wood (Caltech, Pasadena, CA USA). The organizers of the 2013 meeting were Bill Gelbart (University of California, Los Angeles, Los Angeles, CA USA) and Jack Johnson (Scripps Research Institut...

  6. Quantum Key Distribution with Qubits Encoded in Qutrit

    OpenAIRE

    Kumar, R; Demkowicz-Dobrzanski, R.; Banaszek, K.

    2012-01-01

    We present a novel one-way quantum key distribution protocol based on 3-dimensional quantum state, a qutrit, that encodes two qubits in its 2-dimensional subspaces. The qubits hold the classical bit information that has to be shared between the legitimate users. Alice sends such a qutrit to Bob where he decodes one of the qubit and measures it along the random Pauli basis. This scheme has higher secure key rate at longer transmission distance than the standard BB84 protocol.

  7. EFFECT OF THE INDIAN PENINSULA ON THE COURSE OF THE ASIAN TROPICAL SUMMER MONSOON

    Institute of Scientific and Technical Information of China (English)

    徐海明; 何金海; 董敏

    2001-01-01

    In terms of the NCAR Community Climate Model (CCM3), the effect of the Indian Peninsula on the course of the Asian tropical summer monsoon is simulated in this paper, and numerical experimental results show that the Indian Peninsula plays a critical role in the establishment process of the Asian tropical summer monsoon. When the CCM3 includes the Indian Peninsula,the model successfully simulates out the course of the Asian tropical summer monsoon, i.e. the South China Sea (SCS) summer monsoon at first bursts in middle May, while the Indian monsoon just establishes until middle June. However when the Indian Peninsula topography is deleted in the model, the Indian and SCS summer monsoons almost simultaneously establish in late May.Numerical results further indicate that in the former experiment the sensible heating of the Indian Peninsula warms the air above and produces evident temperature contrast between the peninsula and its adjacent SCS and Bay of Bengal (BOB), which results in the strengthening and maintenance of the BOB trough in the low-middle layer of the troposphere in the end of spring and early summer and thus the earliest establishment of the Asian tropical summer monsoon in the SCS in middle May. However, the Indian summer monsoon just establishes until middle June when the strong west wind over the Arabian Sea shifts northwards and cancels out the influence of the northwest flow behind the BOB trough. In the latter experiment the effect of Tibetan Plateau only produces a very weak BOB trough, and thus the SCS and Indian summer monsoons almost simultaneously establish.

  8. Sacrificing Steve: How I Killed the Crocodile Hunter

    OpenAIRE

    Luke Carman

    2010-01-01

    Bob Hodge and Vijay Mishra argue that the complex issues of illegitimacy at the core of Australian identity are repressed through a continual process of cyclical silencing, where traces of a shameful past are exorcised by a focus on images of a mythologised ‘legend’, embodied in characters such as 'The Man from Snowy River'. This article explores such a 'schizophrenic' cycle in relation to the life, death and resurrection of Steve 'Crocodile Hunter' Irwin.

  9. Sacrificing Steve: How I Killed the Crocodile Hunter

    Directory of Open Access Journals (Sweden)

    Luke Carman

    2010-09-01

    Full Text Available Bob Hodge and Vijay Mishra argue that the complex issues of illegitimacy at the core of Australian identity are repressed through a continual process of cyclical silencing, where traces of a shameful past are exorcised by a focus on images of a mythologised ‘legend’, embodied in characters such as 'The Man from Snowy River'. This article explores such a 'schizophrenic' cycle in relation to the life, death and resurrection of Steve 'Crocodile Hunter' Irwin.

  10. Knokin On Heaven's Door--敲开天堂的门

    Institute of Scientific and Technical Information of China (English)

    卢超

    2005-01-01

    @@ 第一次听到这首歌,是从Guns N'Roses的专辑开始的,尽管后来得知这首作品的原作者并非Guns N'Roses而是Bob Dylan,但每当听到这首歌的时候我还是会想到Guns N'Roses.

  11. Detailing 'measures that matter'.

    Science.gov (United States)

    Heavisides, Bob

    2010-04-01

    In a paper originally presented at last October's Healthcare Estates conference in Harrogate, Bob Heavisides, director of facilities at the Milton Keynes NHS Foundation Trust, explains how estates and facilities directors can provide a package of information based on a number of "measures that matter" to demonstrate to their boards that safe systems of work, operational efficiency and effectiveness, and operational parameters, are within, or better than, equivalent-sized Trusts.

  12. Master planning--a new way forward?

    Science.gov (United States)

    Heavisides, Bob

    2009-04-01

    Bob Heavisides, director of facilities, Milton Keynes Hospital NHS Foundation Trust, and senior research fellow, Medical Architecture Research Unit (MARU), at London South Bank University, considers, in a précis of a paper presented at last year's Healthcare Estates conference, how a new master planning approach may bring significant benefits to the healthcare estate, arguing that, against today's fast-changing backdrop, typical existing estates strategies may no longer be fully "fit-for-purpose".

  13. 阅读理解四则(英文)

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    (A)At the Barber’s Shop(理发店)Jack went to a barber’s shop and had his hair cut, but when he came out, he was not happy with the result (结果). When his friend Bob saw him, he laughed and said,"What has happened to your hair,Jack?" Jack said, "I tried a new

  14. Indian summer monsoon and winter hydrographic variations over past millennia resolved by clay sedimentation

    Digital Repository Service at National Institute of Oceanography (India)

    Chauhan, O.S.; Dayal, A.M.; Basavaiah, N.; Kader, U.S.A.

    Ocean. For example, a large hydrological imbalance due to precipitation – evaporation (P-E) and fluvial influx associated with hydrometeorological regimes in two adjacent basins (the Bay of Bengal, P>>E due to higher fluvial runoff and precipitation...; the Arabian Sea, excess evaporation and loss of fresh water; E>>P) leads to an inter-basin transfer. During boreal summer (June though September), Indian Monsoon Current advects high salinity Arabian Sea Waters into BOB [Vinayachandran et al., 1999]. Upon...

  15. Heartland Payment Systems: lessons learned from a data breach

    OpenAIRE

    Julia S. Cheney

    2010-01-01

    On August 13, 2009, the Payment Cards Center hosted a workshop examining the changing nature of data security in consumer electronic payments. The center invited the chairman and CEO of Heartland Payment Systems (HPS or Heartland), Robert (Bob) Carr, to lead this discussion and to share his experiences stemming from the data breach at his company in late 2008 and, as important, to discuss lessons learned as a result of this event. The former director of the Payment Cards Center, Peter Burns, ...

  16. Continuous variable quantum cryptography using coherent states

    OpenAIRE

    Grosshans, Frédéric; Grangier, Philippe

    2002-01-01

    5 pages, 1 figure. In v2 minor rewriting for clarity, references added International audience We propose several methods for quantum key distribution (QKD) based upon the generation and transmission of random distributions of coherent or squeezed states, and we show that they are are secure against individual eavesdropping attacks. These protocols require that the transmission of the optical line between Alice and Bob is larger than 50 %, but they do not rely on "non-classical" features...

  17. Distribution of ozone and its precursors over Bay of Bengal during winter 2009: role of meteorology

    Directory of Open Access Journals (Sweden)

    L. M. David

    2011-09-01

    Full Text Available Measurements of ozone and NO2 were carried out in the marine environment of the Bay of Bengal (BoB during the winter months, December 2008–January 2009, as part of the second Integrated Campaign for Aerosols, gases and Radiation Budget conducted under the Geosphere Biosphere Programme of the Indian Space Research Organization. The ozone mixing ratio was found to be high in the head and the southeast BoB with a mean value of 61 ± 7 ppb and 53 ± 6 ppb, respectively. The mixing ratios of NO2 and CO were also relatively high in these regions. The spatial patterns were examined in the light of airflow patterns, air mass back trajectories and other meteorological conditions and satellite retrieved maps of tropospheric ozone, NO2, CO, and fire count in and around the region. The distribution of these gases was strongly associated with the transport from the adjoining land mass. The anthropogenic activities and forest fires/biomass burning over the Indo Gangetic Plains and other East Asian regions contribute to ozone and its precursors over the BoB. Similarity in the spatial pattern suggests that their source regions could be more or less the same. Most of the diurnal patterns showed decrease of the ozone mixing ratio during noon/afternoon followed by a nighttime increase and a morning high. Over this oceanic region, photochemical production of ozone involving NO2 was not very active. Water vapour played a major role in controlling the variation of ozone. An attempt is made to simulate ozone level over the north and south BoB using the photochemical box model (NCAR-MM. The present observed features were compared with those measured during the earlier cruises conducted in different seasons.

  18. Damping in quantum love affairs

    CERN Document Server

    Bagarello, Fabio

    2011-01-01

    In a series of recent papers we have used an operatorial technique to describe stock markets and, in a different context, {\\em love affairs} and their time evolutions. The strategy proposed so far does not allow any dumping effect. In this short note we show how, within the same framework, a strictly non periodic or quasi-periodic effect can be introduced in the model by describing in some details a linear Alice-Bob love relation with damping.

  19. Climate-Adapted Soil Cultivation as an Aspect for Sustainable Farming – Task-Technology-Fit of a Decision Support System

    Directory of Open Access Journals (Sweden)

    Welf Guenther-Lübbers

    2013-03-01

    Full Text Available Due to global climate change and its impact on local weather conditions, decision support systems are becoming more important in agriculture. Such systems allow farmers to adapt more effectively to the complex changes affecting their farms. Marginal production sites must apply new tillage strategies adapted to new climatic conditions. Information about proper strategy adjustments is often disseminated through agricultural extension services and journals. A new internet information platform, KlimaBob, which focuses on climate-flexible tillage, was established under the auspices of the Innovation Network of Climate Change Adaptation Brandenburg Berlin. Successful and permanent introduction of such a system requires analysis and verification of its acceptance among individual farmers. This study addresses this need by applying the established task-technology fit approach. A survey was conducted among farmers in the Brandenburg region. The resulting data provided the basis for a structural equation model that explains and evaluates the task-technology fit of the KlimaBob platform. The results indicate that the performance spectrum of the system exerts a strong influence on the task-technology fit when assessed by both the name characteristics of KlimaBob and the individual characteristics of users (for example, time management, technology affinity and risk attitude.

  20. Current Progresses in Study of Impacts of the Tibetan Plateau on Asian Summer Climate

    Institute of Scientific and Technical Information of China (English)

    WU Guoxiong; MAO Jiangyu; DUAN Anmin; ZHANG Qiong

    2006-01-01

    The current progresses in the study of impacts of the Tibetan Plateau on Asian summer climate in the last decade are reviewed. By analyzing evolution of the transitional zone between westerly to the north and easterly to the south (WEB), it is shown that due to the strong heating over the Tibetan Plateau in spring, the overturning in the prevailing wind direction from easterly in winter to westerly in summer occurs firstly over the eastern Bay of Bengal (BOB), accompanied with vigorous convective precipitation to its east. The area between eastern BOB and western Indo-China Peninsula thus becomes the area with the earliest onset of Asian monsoon, which may be referred as BOB monsoon in short. It is shown that the summertime circulations triggered by the thermal forcing of the Iranian Plateau and the Tibetan Plateau are embedded in phase with the continental-scale circulation forced by the diabatic heating over the Eurasian Continent. As a result, the East Asian summer monsoon is intensified and the drought climate over the western and central Asian areas is enhanced. Together with perturbations triggered by the Tibetan Plateau,the above scenarios and the associated heating have important influences on the climate patterns over Asia.Furthermore, the characteristics of the Tibetan mode of the summertime South Asian high are compared with those of Iranian mode. Results demonstrate that corresponding to each of the bimodality of the South Asian high, the rainfall anomaly distributions over Asia exhibit different patterns.

  1. A brand new science for the planet

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    “When the problem gets complicated, networking is the solution”. This is nothing new in principle but what Bob Bishop has in mind is one of those novelties that have the potential to change the course of history. He proposes to start networking sciences to create new knowledge. All this for the benefit – and the survival – of the planet.   At the end of the fifteenth and the start of the sixteenth centuries, Leonardo da Vinci was not only an engineer but also a painter, a mathematician and an architect. But in more recent years the sciences have evolved more towards specialization. “We have been treating the sciences as separate stovepipes and silos for over 200 years”, says Bob Bishop, former CEO at Silicon Graphics and a physicist with more than 40 years’ experience in scientific, technical and engineering computing. On 29 January, Bob Bishop visited CERN and gave a seminar on the role of computing in climate science. He is ...

  2. Feasibility of 300 km Quantum Key Distribution with Entangled States

    CERN Document Server

    Scheidl, Thomas; Fedrizzi, Alessandro; Ramelow, Sven; Ma, Xiao-Song; Herbst, Thomas; Prevedel, Robert; Ratschbacher, Lothar; Kofler, Johannes; Jennewein, Thomas; Zeilinger, Anton; 10.1088/1367-2630/11/8/085002

    2010-01-01

    A significant limitation of practical quantum key distribution (QKD) setups is currently their limited operational range. It has recently been emphasized (X. Ma, C.-H. F. Fung, and H.-K. Lo., Phys. Rev. A, 76:012307, 2007) that entanglement-based QKD systems can tolerate higher channel losses than systems based on weak coherent laser pulses (WCP), in particular when the source is located symmetrically between the two communicating parties, Alice and Bob. In the work presented here, we experimentally study this important advantage by implementing different entanglement-based QKD setups on a 144~km free-space link between the two Canary Islands of La Palma and Tenerife. We established three different configurations where the entangled photon source was placed at Alice's location, asymmetrically between Alice and Bob and symmetrically in the middle between Alice and Bob, respectively. The resulting quantum channel attenuations of 35~dB, 58~dB and 71~dB, respectively, significantly exceed the limit for WCP system...

  3. A fully efficient secure quantum cryptography protocol

    CERN Document Server

    Xiang Bin Wang

    2001-01-01

    Since Bennett and Brassard suggested their quantum key distribution protocol(BB84 protocol) in 1984, the subject has been extensively studied both theoretically and experimentally. The protocol allows two remote parties Alice and Bob to create and share a secret key using a quantum channel and public authenticated communications. The quantum key created in this way is in principle secure because eavesdroppers have no way to tap the quantum channel without disturb it. In the protocol, two level quantum bits are measured in two basis, $X$ and $Z$ randomly by Bob. So at least half of the measurement results will be discarded because Bob has a half probability taking the measurement in a wrong basis. On the other hand, the security is not the maximum in BB84 protocol. To increase the security, one may straightforwardly increase the number of basis used in the protocol. For example, six state protocol was proposed recently for two level system. However, in this way, it seems to be the case that the higher the secu...

  4. CERN CINE CLUB

    CERN Multimedia

    CERN CINE CLUB

    2010-01-01

    CERN CINE CLUB Thursday 24 June 2010 at 20:30 / Jeudi 24 Juin 2010 à 20:30 CERN Main Auditorium / Amphithéâtre Principal   The Raggedy Rawney By/de : Bob Hoskins (UK, 1988) - 104 min With/avec: Dexter Fletcher, Bob Hoskins, David Hill, Zoe Nathanson, Zoe Wanamaker Bob Hoskins makes his directorial debut with this lyrical, mystical fable about the strength of family and the transcendence of love. When a young military recruit named Tom goes AWOL after his first taste of battle, he must disguise himself with face paint and women’s clothing to avoid being captured by his vengeful commanding officer. He is instead discovered and taken in by Darky, the leader of an eccentric group of traveling gypsies, who thinks he is a «rawney», a half-mad, half-magical woman who brings good fortune. But when Tom begins a love affair with Darky’s daughter, he sets off a chain reaction of events that will soon put all of their lives in grave ...

  5. The Effect of Ionospheric Models on Electromagnetic Pulse Locations

    Energy Technology Data Exchange (ETDEWEB)

    Fenimore, Edward E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Triplett, Laurie A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-07-01

    Locations of electromagnetic pulses (EMPs) determined by time-of-arrival (TOA) often have outliers with significantly larger errors than expected. In the past, these errors were thought to arise from high order terms in the Appleton-Hartree equation. We simulated 1000 events randomly spread around the Earth into a constellation of 22 GPS satellites. We used four different ionospheres: “simple” where the time delay goes as the inverse of the frequency-squared, “full Appleton-Hartree”, the “BobRD integrals” and a full raytracing code. The simple and full Appleton-Hartree ionospheres do not show outliers whereas the BobRD and raytracing do. This strongly suggests that the cause of the outliers is not additional terms in the Appleton-Hartree equation, but rather is due to the additional path length due to refraction. A method to fix the outliers is suggested based on fitting a time to the delays calculated at the 5 GPS frequencies with BobRD and simple ionospheres. The difference in time is used as a correction to the TOAs.

  6. Association constants in solutions of lithium salts in butyrolactone and a mixture of propylene carbonate with 1,2-dimethoxyethane (1 : 1), according to conductometric data

    Science.gov (United States)

    Chernozhuk, T. V.; Sherstyuk, Yu. S.; Novikov, D. O.; Kalugin, O. N.

    2016-02-01

    A conductometric study is performed with solutions of lithium bis(oxalato)borate (LiBOB) in γ-butyrolactone (γ-BL) at 278.15-388.15 K and lithium bis(trifluoromethylsulfonyl)imide (LiTFSI), LiBOB, and lithium tetrafluoroborate (LiBF4) in mixtures of propylene carbonate and 1,2-dimethoxyethane (PC + 1,2-DME) (1 : 1) at 278.15-348.15 K. Limiting molar electrical conductivities (LMECs) and association constants ( K a) in the studied solutions of electrolytes are determined using the Lee-Wheaton equation. The effect temperature, the nature of the solvent, and the properties of the anion have on the conductivity and interparticle interactions in solutions of lithium salts in γ-BL and PC + 1,2-DME (1 : 1) is established. It was concluded that the studied solutions are characterized by low values of their association constants. It was found that the BOB;- anion destroys the structure of the solvent.The thickness of the dynamic solvation shell of ions (Δ R) remains constant for both solvents over the studied range of temperatures, and Δ R is significantly greater for Li+ than for other ions.

  7. Secrecy extraction from no-signaling correlations

    International Nuclear Information System (INIS)

    Quantum cryptography shows that one can guarantee the secrecy of correlation on the sole basis of the laws of physics, that is, without limiting the computational power of the eavesdropper. The usual security proofs suppose that the authorized partners, Alice and Bob, have a perfect knowledge and control of their quantum systems and devices; for instance, they must be sure that the logical bits have been encoded in true qubits and not in higher dimensional systems. In this paper, we present an approach that circumvents this strong assumption. We define protocols, both for the case of bits and for generic d-dimensional outcomes, in which the security is guaranteed by the very structure of the Alice-Bob correlations, under the no-signaling condition. The idea is that if the correlations cannot be produced by shared randomness, then Eve has poor knowledge of Alice's and Bob's symbols. The present study assumes on the one hand that the eavesdropper Eve performs only individual attacks (this is a limitation to be removed in further work), and on the other hand that Eve can distribute any correlation compatible with the no-signaling condition (in this sense her power is greater than what quantum physics allows). Under these assumptions, we prove that the protocols defined here allow extracting secrecy from noisy correlations, when these correlations violate a Bell-type inequality by a sufficiently large amount. The region in which secrecy extraction is possible extends within the region of correlations achievable by measurements on entangled quantum states

  8. A controlled quantum teleportation scheme with identity certification%一种可控量子隐形传态身份认证的方案

    Institute of Scientific and Technical Information of China (English)

    龚敬; 谭晓青

    2013-01-01

    提出了一种实现可控量子隐形传态身份认证的方案.可信第三方Charlie利用纠缠交换原理对接收者Bob进行身份认证,在确定Bob的合法身份并将消息反馈给发送者Alice后,Alice再对量子信息进行传送.本方案能有效解决假冒身份攻击,从而保证量子信息传送的安全性.%This paper proposed a controlled quantum teleportation scheme with identity certification. The receiver Bob was identified by entanglement swapping principle from the trusted Charlie. After the sender Alice gets the feedback from Charlie, and Charlie can make sure the identity of Bob and then send the quantum information to Bob. The scheme could prevent forgery attack effectively to ensure the security of quantum information transmission.

  9. Communicating through Probabilities: Does Quantum Theory Optimize the Transfer of Information?

    Directory of Open Access Journals (Sweden)

    William K. Wootters

    2013-08-01

    Full Text Available A quantum measurement can be regarded as a communication channel, in which the parameters of the state are expressed only in the probabilities of the outcomes of the measurement. We begin this paper by considering, in a non-quantum-mechanical setting, the problem of communicating through probabilities. For example, a sender, Alice, wants to convey to a receiver, Bob, the value of a continuous variable, θ, but her only means of conveying this value is by sending Bob a coin in which the value of θ is encoded in the probability of heads. We ask what the optimal encoding is when Bob will be allowed to flip the coin only a finite number of times. As the number of tosses goes to infinity, we find that the optimal encoding is the same as what nature would do if we lived in a world governed by real-vector-space quantum theory. We then ask whether the problem might be modified, so that the optimal communication strategy would be consistent with standard, complex-vector-space quantum theory.

  10. Oblivious Polynomial Evaluation

    Institute of Scientific and Technical Information of China (English)

    Hong-Da Li; Dong-Yao Ji; Deng-Guo Feng; Bao Li

    2004-01-01

    The problem of two-party oblivious polynomial evaluation(OPE)is studied,where one party(Alice)has a polynomial P(x)and the other party(Bob)with an input x wants to learn P(x)in such an oblivious way that Bob obtains P(x)without learning any additional information about P except what is implied by P(x)and Alice does not know Bob's input x.The former OPE protocols are based on an intractability assumption except for OT protocols.In fact,evaluating P(x)is equivalent to computing the product of the coefficient vectors(a0,...,an)and(1,...,xn).Using this idea,an efficient scale product protocol of two vectors is proposed first and then two OPE protocols are presented which do not need any other cryptographic assumption except for OT protocol.Compared with the existing OPE protocol,another characteristic of the proposed protocols is the degree of the polynomial is private.Another OPE protocol works in case of existence of untrusted third party.

  11. Ombuds’ corner: Controlling our own stress

    CERN Multimedia

    Vincent Vuillemin

    2011-01-01

    In this series, the Bulletin aims to explain the role of the Ombuds at CERN by presenting practical examples of misunderstandings that could have been resolved by the Ombuds if he had been contacted earlier. Please note that, in all the situations we present, the names are fictitious and used only to improve clarity.   Bob* has been working at CERN for years. During his career he developed many skills, being now an expert technician, the kind of person who can handle all urgencies. He is always ready to help and everyone appreciates him a lot. When asked for some kind of immediate help, his answer is most of the time: “I will take care of it”. Of course everyone having a problem loves such an answer! After a reorganization done in his region of CERN, Bob found himself working with new people, not knowing as much as he did their way around. Without noticing it at the beginning, Bob started to respond to more and more requests. What happened? His mobile phone was interrupting hi...

  12. Computationally Secure Pattern Matching in the Presence of Malicious Adversaries

    DEFF Research Database (Denmark)

    Hazay, Carmit; Toft, Tomas

    2010-01-01

    We propose a dedicated protocol for the highly motivated problem of secure two-party pattern matching: Alice holds a text t ∈ {0,1}*. of length n, while Bob has a pattern p ∈ {0,1}*. of length m. The goal is for Bob to learn where his pattern occurs in Alice's text. Our construction guarantees full...... simulation in the presence of malicious, polynomial-time adversaries (assuming that ElGamal encryption is semantically secure) and exhibits computation and communication costs of O(n + m) in a constant round complexity. In addition to the above, we propose a collection of protocols for variations...... of the secure pattern matching problem: The pattern may contain wildcards (O(nm) communication in O(1) rounds). The matches may be approximated, i.e., Hamming distance less than some threshold ((O(nm) communication in O(1) rounds). The length, m, of Bob's pattern is secret (O(nm) communication in O(1) rounds...

  13. Towards Holographic Quantum Energy Teleportation

    CERN Document Server

    Giataganas, Dimitrios; Liu, Pei-Hua

    2016-01-01

    We propose a protocol of quantum energy teleportation (QET) for holographic conformal field theory (CFT) in 3-dimensional anti-de Sitter space with or without black hole. A generic QET protocol contains two steps: (i) Alice injects the energy into ground state by performing local measurement; (ii) the distant Bob extracts energy by performing local operation according to Alice's measurement outcome. In our holographic protocol, we mimic the step (i) by local projection of an interval of CFT ground state into an excited state described by Banados geometry. For the step (ii) we adopt the surface/state duality to evaluate the energy extraction by local deformation of UV surface as the holographic dual of Bob's local unitary operations. Our results show that this protocol always gains energy extraction. Moreover, the ratio of Bob's extraction energy density to the energy density of the excited state after Alice's local projection is a positive semi-definite and bounded function of the UV surface deformation profi...

  14. Classical Information Storage in an n-Level Quantum System

    Science.gov (United States)

    Frenkel, Péter E.; Weiner, Mihály

    2015-12-01

    A game is played by a team of two—say Alice and Bob—in which the value of a random variable x is revealed to Alice only, who cannot freely communicate with Bob. Instead, she is given a quantum n-level system, respectively a classical n-state system, which she can put in possession of Bob in any state she wishes. We evaluate how successfully they managed to store and recover the value of x by requiring Bob to specify a value z and giving a reward of value f ( x, z) to the team. We show that whatever the probability distribution of x and the reward function f are, when using a quantum n-level system, the maximum expected reward obtainable with the best possible team strategy is equal to that obtainable with the use of a classical n-state system. The proof relies on mixed discriminants of positive matrices and—perhaps surprisingly—an application of the Supply-Demand Theorem for bipartite graphs. As a corollary, we get an infinite set of new, dimension dependent inequalities regarding positive operator valued measures and density operators on complex n-space. As a further corollary, we see that the greatest value, with respect to a given distribution of x, of the mutual information I ( x; z) that is obtainable using an n-level quantum system equals the analogous maximum for a classical n-state system.

  15. Behavior of Bali Starling at Bali Barat National Park and Nusa Penida Island (PERILAKU JALAK BALI DI TAMAN NASIONAL BALI BARAT DAN PULAU NUSA PENIDA

    Directory of Open Access Journals (Sweden)

    Sudaryanto .

    2015-10-01

    Full Text Available Jalak Bali (Leucopsar rothschildi sejak tahun 1966 dimasukan oleh International Union forConservation of Nature (IUCN Red List of Threatened Species dan Convention on International Trade inEndangered Species of Wild Fauna and Flora (CITES. Jalak Bali dikelompokan sebagai satwa terancampunah dengan kategori kritis (Critically Endangered dan di Indonesia telah dilindungi sejak tahun 1970.Tujuan penelitian ini adalah untuk mengetahui perilaku Jalak Bali di Taman Nasional Bali Barat danPulau Nusa Penida untuk konservasi burung tersebut. Metode yang digunakan adalah scan samplingdengan instataneous sampling. Perilaku Jalak Bali di Taman Nasional Bali Barat terdiri dari terbang17%, makan buah 3%, makan serangga 1%, menelisik bulu 15%, menegakkan jambul 6%, bobbing 7%,berkicau 40%, minum 0,5%, dan berjalan 10%. Sementara di Nusa Penida pada musim hujan terdiriterbang 13%, makan buah 19%, makan serangga 4%, menelisik bulu 7%, menegakkan jambul 7%, bobbing8%, berkicau 11%, minum 1%, 1% mandi, berjalan 16% , bersarang 2%, mengeram 9% dan mengasuh anak3%, dan di Nusa Penida pada musim kemarau terdiri terbang 11%, makan buah 9%, makan serangga21%, menelisik bulu 7%, menegakkan jambul 6%, bobbing 7%, berkicau 9%, minum 2%, mandi 1%, berjalan18% , dan bersarang 8%. Jalak Bali berkembang biak di Nusa Penida pada musim hujan dan musimkemarau, tetapi di Taman Nasional Bali Barat pada musim hujan.

  16. Semiquantum Key Distribution Using Entangled States

    Institute of Scientific and Technical Information of China (English)

    WANG Jian; ZHANG Sheng; ZHANG Quan; TANG Chao-Jing

    2011-01-01

    Recently,Boyer et al.presented a novel semiquantum key distribution protocol [Phys.Rev.Lett.99 (2007) 140501]by using four quantum states,each of which is randomly prepared in the Z or X basis.Here we present a semiquantum key distribution protocol by using maximally entangled states in which quantum Alice shares a secret key with classical Bob.Quantum Alice has the ability to prepare Bell states and perform Bell basis or computational basis measurement.Classical Bob is restricted to measuring,preparing a particle in the computational basis,reflecting or reordering the particles.The qubit efficiency of the protocol improves to 50% and the protocol can be modified to a measure-resend protocol or a protocol without quantum memory.We also show that the protocol is secure against eavesdropping.Quantum key distribution (QKD) is one of the most promising applications of quantum information science.The goal of QKD is to allow two legitimate parties,Alice and Bob,to generate a secret key over a long distance,in the presence of an eavesdropper,Eve,who interferes with the signals.The security of QKD is based on the fundamental laws of physics.%Recently, Boyer et al. Presented a novel semiquantum key distribution protocol [Phys. Rev. Lett. 99 (2007) 140501] by using four quantum states, each of which is randomly prepared in the Z or X basis. Here we present a semi-quantum key distribution protocol by using maximally entangled states in which quantum Alice shares a secret key with classical Bob. Quantum Alice has the ability to prepare Bell states and perform Bell basis or computational basis measurement. Classical Bob is restricted to measuring, preparing a particle in the computational basis, reflecting or reordering the particles. The qubit efficiency of the protocol improves to 50% and the protocol can be modified to a measure-resend protocol or a protocol without quantum memory. We also show that the protocol is secure against eavesdropping.

  17. Variability of the TRMM-PR total and convective and stratiform rain fractions over the Indian region during the summer monsoon

    Science.gov (United States)

    Pokhrel, Samir; Sikka, D. R.

    2013-07-01

    Level 3 (3A25) TRMM Precipitation Radar (PR) data are used for 13 years period (1998-2010) to prepare climatology of TRMM PR derived near surface rain (Total rain) and rain fractions for the 4-months duration of Indian Summer Monsoon season (June-September) as well as for individual months. It is found that the total rain is contributed mostly (99 %) by two rain fractions i.e. stratiform and convective rain fractions for the season as well as on the monthly basis. It is also found that total rain estimates by PR are about 65 % of the gauge measured rain over continental India as well as on sub-regional basis. Inter-annual variability of TRMM-PR rain estimates for India mainland and its sub-regions as well as over the neighboring oceanic regions, in terms of coefficient of variability (CV) is discussed. The heaviest rain region over north Bay of Bengal (BoB) is found to have the lowest CV. Another sub-region of low CV lies over the eastern equatorial Indian ocean (EEIO). The CVs of total rain as well as its two major constituents are found to be higher on monthly basis compared to seasonal basis. Existence of a well known dipole between the EEIO and the north BoB is well recognized in PR data also. Significant variation in PR rainfall is found over continental India between excess and deficit monsoon seasons as well as between excess and deficit rainfall months of July and August. Examination of rainfall fractions between the BoB and Central India on year to year basis shows that compensation in rainfall fractions exists on monthly scale on both the regions. Also on the seasonal and monthly scales, compensation is observed in extreme monsoon seasons between the two regions. However, much less compensation is observed between the north BoB and EEIO belts in extreme rain months. This leads to speculation that the deficit and excess seasons over India may result from slight shift of the rainfall from Central India to the neighboring oceanic regions of north BoB

  18. Obituary: Robert E. Fried, 1930-2003

    Science.gov (United States)

    Mannery, Edward J.; Szkody, Paula

    2004-12-01

    Professionals and friends knew him as Captain Bob; he was the captain of his airplane, Birdie, and of his observatory, Braeside. He was a man of many talents, and he incorporated those talents into his two main passions in life: flying planes and doing astronomical research. Bob was born on December 14, 1930 in St. Paul, Minnesota to parents Dr. Louis and Emily Fried. His interest in astronomy began after he moved to Atlanta in the late 1950's as a pilot for Delta Airlines. It was there he joined the Atlanta Astronomy Club in 1960 and went on to become its President and also the President of the Astronomical League. Wanting a larger and better telescope than the usual department store variety, he took the advice of Patrick Moore, who suggested he build one himself. So he did. He obtained a military blank for a 16-inch Cassegrain and ground and polished the optics while the heavy parts were machined in the Delta Airlines shops after hours. His observatory protruded from the roof of his home and featured a modified silo dome, while the observer's controls were reminiscent of an airplane cockpit. When it became obvious that the Atlanta climate offered little support for serious Astronomy, Bob moved his family and observatory to a higher, clearer site in the Rockies. There he built a new dome on Flagstaff Mountain near Boulder. Subsequent to meeting and conspiring with fellow enthusiast Edward Mannery, who became his lifelong collaborator, Bob upgraded his system for digital photometry and began to obtain magnitudes to a few percent accuracy. After grumbling about the windy and cloudy weather of the Rockies, Bob tried a site near Lowell Observatory and then finally settled on the best home for Braeside in 1976, a short walk through the pines from the US Naval Observatory. He ultimately created a building he dubbed "The Monastery" after Mt. Wilson, that housed a bedroom, darkroom, electronics shop, machine shop, library and telescope control console and upgraded his

  19. Essay: In Memory of Robert Siemann

    Energy Technology Data Exchange (ETDEWEB)

    Chao, Alexander W.; /SLAC

    2011-11-14

    Bob Siemann came to SLAC from Cornell in 1991. With the support from Burton Richter, then Director of SLAC, he took on a leadership role to formulate an academic program in accelerator physics at SLAC and the development of its accelerator faculty. Throughout his career he championed accelerator physics as an independent academic discipline, a vision that he fought so hard for and never retreated from. He convinced Stanford University and SLAC to create a line of tenured accelerator physics faculty and over the years he also regularly taught classes at Stanford and the U.S. Particle Accelerator School. After the shutdown of the SSC Laboratory, I returned to SLAC in 1993 to join the accelerator faculty he was forming. He had always visualized a need to have a professional academic journal for the accelerator field, and played a pivotal role in creating the journal Physical Review Special Topics - Accelerators and Beams, now the community standard for accelerator physics after nine years of his editorship. Today, Bob's legacy of accelerator physics as an independent academic discipline continues at SLAC as well as in the community, from which we all benefit. Bob was a great experimentalist. He specialized in experimental techniques and instrumentation, but what he wanted to learn is physics. If he had to learn theory - heaven forbid - to reach that goal, he would not hesitate one second to do so. In fact, he had written several theoretical papers as results of these efforts. Now this is what I call a true experimentalist! Ultimately, however, I think it was experimental instruments that he loved most. His eyes widened when he talked about his instruments. Prompted by a question, he would proceed to a nearby blackboard, with a satisfying grin, and draw his experimental device in a careful thinking manner, then describe his experiment and educate the questioner with some insightful physics. These moments were most enjoyable, to him and the questioner alike. When I

  20. Essay: In Memory of Robert Siemann

    International Nuclear Information System (INIS)

    Bob Siemann came to SLAC from Cornell in 1991. With the support from Burton Richter, then Director of SLAC, he took on a leadership role to formulate an academic program in accelerator physics at SLAC and the development of its accelerator faculty. Throughout his career he championed accelerator physics as an independent academic discipline, a vision that he fought so hard for and never retreated from. He convinced Stanford University and SLAC to create a line of tenured accelerator physics faculty and over the years he also regularly taught classes at Stanford and the U.S. Particle Accelerator School. After the shutdown of the SSC Laboratory, I returned to SLAC in 1993 to join the accelerator faculty he was forming. He had always visualized a need to have a professional academic journal for the accelerator field, and played a pivotal role in creating the journal Physical Review Special Topics - Accelerators and Beams, now the community standard for accelerator physics after nine years of his editorship. Today, Bob's legacy of accelerator physics as an independent academic discipline continues at SLAC as well as in the community, from which we all benefit. Bob was a great experimentalist. He specialized in experimental techniques and instrumentation, but what he wanted to learn is physics. If he had to learn theory - heaven forbid - to reach that goal, he would not hesitate one second to do so. In fact, he had written several theoretical papers as results of these efforts. Now this is what I call a true experimentalist. Ultimately, however, I think it was experimental instruments that he loved most. His eyes widened when he talked about his instruments. Prompted by a question, he would proceed to a nearby blackboard, with a satisfying grin, and draw his experimental device in a careful thinking manner, then describe his experiment and educate the questioner with some insightful physics. These moments were most enjoyable, to him and the questioner alike. When I

  1. Influence of synoptic meteorological conditions on urban air quality -A study over Hyderabad, India using satellite data and ground based measurements

    Science.gov (United States)

    Rani Sharma, Anu; Kharol, Shailesh Kumar; Kvs, Badarinath

    Urban areas were considered to be a major source of atmospheric pollution due to popula-tion growth, migration, increasing industrialization and energy use particularly in developing countries. The air quality in urban areas is governed by temporal distribution of emissions from various activities in the city, the topography, and the weather, including atmospheric circulation patterns in the region. The extensive coastal belt of India is very vulnerable to low pressure systems in the Bay of Bengal (BoB) or the Arabian Sea. Most importantly, the formation of a low pressure system in the ocean is one of the most prominent weather systems characterized by high atmospheric pressure gradients and wind. In the present study, variation in aerosol properties and ground reaching solar irradiance were analyzed over a tropical urban environment of Hyderabad associated with a low pressure system during December, 3-10, 2008 over Bay of Bengal (BoB). The low pressure system formed over southeast BoB on Decem-ber 4, 2008, moved westwards and lay centered at 23:30 Indian Standard Time. The study area of Hyderabad is located between 17° 10' and 17° 50' N latitude and 78° 10' and 78° 50' E longitude, in the southeastern part of the Indian region, 300 km from the BoB. Synchronous measurements of aerosol optical depth were carried out using handheld MICROTOPS -II in the premises of the National Remote Sensing Centre (NRSC) campus located at Balanagar, Hyderabad. Along with the daytime measurements of AOD500, continuous measurements of the vertical profile of aerosols and planetary boundary layer were carried out using a portable micropulse lidar (MPL) system at 532 nm. An ultraviolet (UV)-B radiometer from Solar Light Company was used to measure UVery in the range 280-320 nm. Continuous measurements of the Particulate-matter (PM) size distributions were performed with GRIMM aerosol spectrom-eter model 1-108. Ground-reaching solar radiation in 310 to 2800 nm broadband was carried

  2. Cluster态的量子签名方案%Cluster state quantum entangled signature scheme

    Institute of Scientific and Technical Information of China (English)

    王郁武

    2012-01-01

    提出一种利用Cluster state纠缠态实现的量子签名方案.该方案中用Cluster态作为量子信道,每一组量子比特串分别分发给消息拥有和签名者Alice、公证人TA、验签名者Bob.加载消息的方法是Alice在TA规定量子比特串序列下,分别对拥有的量子比特对的第一个量子比特进行幺正变换操作而进行.对拥有的量子比特对进行的Bell测量结果是消息的签名.Bob对拥有的对应的两个量子比特对进行Bell测量来验证签名,但要得到公证人TA对其约束才能完成.Cluster state纠缠态在纠缠特性、局域操作保真性和安全性有较好的性能.%A scheme of using Cluster quantum entangled state to quantum signature is presented. Cluster state of the program is used as a quantum channel, and each group of quantum bit string signed by Alice is distributed to Alice, notaries TA and inspection signer Bob. The way of loading message is that Alice does transformation operation on the first qubit unitary respectively, and the Bell measurement results of quantum bits are the signature of a message. Bob does the Bell measurement on the corresponding two-qubit to verify the signature, but it must be restricted by the notary TA. It is verified that Cluster state entanglement properties of entangled state, security, local operators have better performance.

  3. Interannual variability of upper ocean stratification in Bay of Bengal: observational and modeling aspects

    Science.gov (United States)

    Fousiya, T. S.; Parekh, Anant; Gnanaseelan, C.

    2016-10-01

    The annual cycle and interannual variability of stratification in Bay of Bengal (BoB) are studied using both observations and Global Ocean Data Assimilation System (GODAS) analysis during 2003-2012. Annual cycle of stratification and sea surface temperature (SST) evolve coherently, highlighting its role on modulating air-sea interaction over this climatologically important region. Spatial distribution of stratification shows strong seasonality in ARGO observations, whereas it is highly underestimated in GODAS with highest discrepancies during fall and spring. The annual cycle of sea surface salinity (SSS) in GODAS is out of phase with observations implying potential feedbacks. During La Niña years, SSS drop in fall and winter and are lesser than those reported during El Niño years. All these features are misrepresented in GODAS. As stratification modulates air-sea interaction over BoB especially during El Niño and La Niña years, such misrepresentation of ocean stratification may lead to unrealistic thermocline-SST coupling in the models. The mean stratification and its interannual variability in GODAS are weaker than observed even though interannual variability in freshwater flux (P-E) is higher in GODAS. Detailed analysis of GODAS with in situ observations reveals that upper ocean current shear (vertical) is overestimated in GODAS, leading to unrealistically strong mixing which is primarily responsible for the deeper penetration of surface warm and freshwater resulting weaker stratification. As GODAS is used to initialize the ocean component of the coupled forecasting system for seasonal prediction of Asian monsoon, proper representation of stratification is essential. This study advocates the need of accurate representation of upper ocean salinity in GODAS for improved stratification. We speculate that improved stratification and mixing in the BoB improve summer monsoon forecast.

  4. Air Pollution Over the Ganges Basin and Northwest Bay of Bengal in the Early Postmonsoon Season Based on NASA MERRAero Data

    Science.gov (United States)

    Kishcha, Pavel; Da Silva, Arlindo M.; Starobinets, Boris; Alpert, Pinhas

    2014-01-01

    The MERRA Aerosol Reanalysis (MERRAero) has been recently developed at NASA's Global Modeling Assimilation Office. This reanalysis is based on a version of the Goddard Earth Observing System-5 (GEOS-5) model radiatively coupled with Goddard Chemistry, Aerosol, Radiation, and Transport aerosols, and it includes assimilation of bias-corrected aerosol optical thickness (AOT) from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor on both Terra and Aqua satellites. In October over the period 2002-2009, MERRAero showed that AOT was lower over the east of the Ganges basin than over the northwest of the Ganges basin: this was despite the fact that the east of the Ganges basin should have produced higher anthropogenic aerosol emissions because of higher population density, increased industrial output, and transportation. This is evidence that higher aerosol emissions do not always correspond to higher AOT over the areas where the effects of meteorological factors on AOT dominate those of aerosol emissions. MODIS AOT assimilation was essential for correcting modeled AOT mainly over the northwest of the Ganges basin, where AOT increments were maximal. Over the east of the Ganges basin and northwest Bay of Bengal (BoB), AOT increments were low and MODIS AOT assimilation did not contribute significantly to modeled AOT. Our analysis showed that increasing AOT trends over northwest BoB (exceeding those over the east of the Ganges basin) were reproduced by GEOS-5, not because of MODIS AOT assimilation butmainly because of the model capability of reproducing meteorological factors contributing to AOT trends. Moreover, vertically integrated aerosol mass flux was sensitive to wind convergence causing aerosol accumulation over northwest BoB.

  5. Increasing chemical weathering in the Himalayan system since the Last Glacial Maximum

    Science.gov (United States)

    Lupker, Maarten; France-Lanord, Christian; Galy, Valier; Lavé, Jérôme; Kudrass, Hermann

    2013-04-01

    Continental chemical weathering is central in Earth's surface biogeochemical cycles as it redistributes elements across reservoirs such as the crust and the oceans. However the evolution of weathering through time and its response to external forcing such as changes in climate remain poorly constrained. In this work, we use the sedimentary record from the Bay of Bengal (BoB) to document the evolution of the weathering intensity in the Himalayan system from the Last Glacial Maximum (LGM) to present. Sediment cores from the BoB record the products of Himalayan erosion after their transport through the Indo-Gangetic floodplain by the Ganga and Brahmaputra Rivers. The physical setting of the G&B basin remained essentially unchanged over the Quaternary so that the effects of changes in climatic forcing can be isolated. The degree of weathering of the sediments is documented using mobile to immobile ratios such as K/Si and H2O+/Si as well as detrital calcite. Robust weathering proxies are derived by correcting the chemical composition of sediment for sorting effects that occur during transport and deposition. The BoB record is also further compared to the chemical composition of modern river sediments from the Ganga and Brahmaputra (G&B) basin. Weathering proxies all indicate that the sediments exported by the G&B Rivers became increasingly weathered over the past ~21 kyr. Additionally, Sr, Nd and major elements suggest a constant sediment provenance in the system over the last 21 kyr. These changes in the degree of weathering of the sediments show that the weathering flux exported by the system to the Indian Ocean during the LGM was significantly lower than at present and demonstrate that chemical weathering in continental scale basins such as the G&B, responds to Late Quaternary climate changes.

  6. Characterization of the regulatory network of BoMYB2 in controlling anthocyanin biosynthesis in purple cauliflower.

    Science.gov (United States)

    Chiu, Li-Wei; Li, Li

    2012-10-01

    Purple cauliflower (Brassica oleracea L. var. botrytis) Graffiti represents a unique mutant in conferring ectopic anthocyanin biosynthesis, which is caused by the tissue-specific activation of BoMYB2, an ortholog of Arabidopsis PAP2 or MYB113. To gain a better understanding of the regulatory network of anthocyanin biosynthesis, we investigated the interaction among cauliflower MYB-bHLH-WD40 network proteins and examined the interplay of BoMYB2 with various bHLH transcription factors in planta. Yeast two-hybrid studies revealed that cauliflower BoMYBs along with the other regulators formed the MYB-bHLH-WD40 complexes and BobHLH1 acted as a bridge between BoMYB and BoWD40-1 proteins. Different BoMYBs exhibited different binding activity to BobHLH1. Examination of the BoMYB2 transgenic lines in Arabidopsis bHLH mutant backgrounds demonstrated that TT8, EGL3, and GL3 were all involved in the BoMYB2-mediated anthocyanin biosynthesis. Expression of BoMYB2 in Arabidopsis caused up-regulation of AtTT8 and AtEGL3 as well as a subset of anthocyanin structural genes encoding flavonoid 3'-hydroxylase, dihydroflavonol 4-reductase, and leucoanthocyanidin dioxygenase. Taken together, our results show that MYB-bHLH-WD40 network transcription factors regulated the bHLH gene expression, which may represent a critical feature in the control of anthocyanin biosynthesis. BoMYB2 together with various BobHLHs specifically regulated the late anthocyanin biosynthetic pathway genes for anthocyanin biosynthesis. Our findings provide additional information for the complicated regulatory network of anthocyanin biosynthesis and the transcriptional regulation of transcription factors in vegetable crops. PMID:22644767

  7. Impact of Ocean-Continent Distribution over Southern Asia on the Formation of Summer Monsoon

    Institute of Scientific and Technical Information of China (English)

    JIN Qihua; HE Jinhai; CHEN Longxun; ZHU Congwen

    2006-01-01

    Using the CCM3/NCAR, a series of numerical experiments are designed to explore the effect of ocean-land interlaced distributions of Africa-Arabian Sea-India Peninsula-Bay of Bengal (BOB)-Indo-China PeninsulaSouth China Sea on the formation of the Asian summer monsoon circulation (ASMC). The results show that the thermal difference between African or Indian Subcontinent and nearby areas including the Indian Ocean,Arabian Sea, and part of BOB is the primary mechanism that maintains the Indian monsoon circulation.In the experiment getting rid of these two continents, the Indian monsoon system (IMS) members, i.e., the Somali cross-equatorial jet (40°E) and the southwesterly monsoon over the Arabian Sea and BOB, almost disappear. Moreover, the Hadley circulation weakens dominantly. It also proves that Africa has greater effect than Indian Subcontinent on the IMS.However, the existence of Indo-China Peninsula and Australia strengthens the East Asian monsoon system (EAMS). The thermal contrast between Indo-China Peninsula and SCS, Australia and western Pacific Ocean plays an important role in the formation of the tropical monsoon to the south of the EAMS. When the Indo-China Peninsula is masked in the experiment, the cross-equatorial flow (105°E and 125°E) vanishes,so does the southwesterly monsoon usually found over East Asia, and EAMS is enfeebled significantly. In addition, the impacts of these thermal contrasts on the distribution of the summer precipitation and surface temperature are investigated.

  8. Enhanced charging capability of lithium metal batteries based on lithium bis(trifluoromethanesulfonyl)imide-lithium bis(oxalato)borate dual-salt electrolytes

    Science.gov (United States)

    Xiang, Hongfa; Shi, Pengcheng; Bhattacharya, Priyanka; Chen, Xilin; Mei, Donghai; Bowden, Mark E.; Zheng, Jianming; Zhang, Ji-Guang; Xu, Wu

    2016-06-01

    Rechargeable lithium (Li) metal batteries with conventional LiPF6-carbonate electrolytes have been reported to fail quickly at charging current densities of about 1.0 mA cm-2 and above. In this work, we demonstrate the rapid charging capability of Li||LiNi0.8Co0.15Al0.05O2 (NCA) cells can be enabled by a dual-salt electrolyte of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium bis(oxalato)borate (LiBOB) in a carbonate solvent mixture. The cells using the LiTFSI-LiBOB dual-salt electrolyte significantly outperform those using the LiPF6 electrolyte at high charging current densities. At the charging current density of 1.50 mA cm-2, the Li||NCA cells with the dual-salt electrolyte can still deliver a discharge capacity of 131 mAh g-1 and a capacity retention of 80% after 100 cycles. The Li||NCA cells with the LiPF6 electrolyte start to show fast capacity fading after the 30th cycle and only exhibit a low capacity of 25 mAh g-1 and a low retention of 15% after 100 cycles. The reasons for the good chargeability and cycling stability of the cells using the LiTFSI-LiBOB dual-salt electrolyte can be attributed to the good film-formation ability of the electrolyte on the Li metal anode and the highly conductive nature of the sulfur-rich interphase layer.

  9. Enhanced charging capability of lithium metal batteries based on lithium bis(trifluoromethanesulfonyl)imide-lithium bis(oxalato)borate dual-salt electrolytes

    Energy Technology Data Exchange (ETDEWEB)

    Xiang, Hongfa; Shi, Pengcheng; Bhattacharya, Priyanka; Chen, Xilin; Mei, Donghai; Bowden, Mark E.; Zheng, Jianming; Zhang, Jiguang; Xu, Wu

    2016-06-30

    Rechargeable lithium (Li) metal batteries with conventional LiPF6-carbonate electrolytes have been reported to fail quickly at charging current densities of about 1.0 mA cm-2 and above. In this work, we demonstrate the rapid charging capability of the Li||LiNi0.8Co0.15Al0.05O2 (NCA) cells enabled by a dual-salt electrolyte of LiTFSI-LiBOB in a carbonate solvent mixture. It is found that the thickness of solid electrolyte interphase (SEI) layer on Li metal anode largely increases with increasing charging current density. However, the cells using the LiTFSI-LiBOB dual-salt electrolyte significantly outperforms those using the LiPF6 electrolyte at high charging current densities. At the charging current density of 1.50 mA cm-2, the Li||NCA cells with the dual-salt electrolyte can still deliver a discharge capacity of 131 mAh g-1 and a capacity retention of 80% after 100 cycles, while those with the LiPF6 electrolyte start to show fast capacity fading after the 30th cycle and only exhibit a low capacity of 25 mAh g-1 and a low retention of 15% after 100 cycles. The reasons for the good chargeability and cycling stability of the cells using LiTFSI-LiBOB dual-salt electrolyte can be attributed to the good film-formation ability of the electrolyte on lithium metal anode and the highly conductive nature of the sulfur-rich interphase layer.

  10. Intermetallic communication in titanium(IV) ferrocenyldiketonates.

    Science.gov (United States)

    Dulatas, Lea T; Brown, Seth N; Ojomo, Edema; Noll, Bruce C; Cavo, Matthew J; Holt, Paul B; Wopperer, Matthew M

    2009-11-16

    A tetradentate bis(ferrocenyldiketonate) ligand, Fc(2)BobH(2), is prepared via Claisen condensation of acetylferrocene and 2,2'-biphenyldiacetyl chloride, and is metalated with titanium(IV) isopropoxide to give (Fc(2)Bob)Ti(O(i)Pr)(2) in good yield. The isopropoxide groups are replaced with di(4-nitrophenyl)phosphate groups on treatment with the corresponding acid, and with chlorides on treatment with trimethylsilyl chloride. Metathesis with catechol leads to the bis(o-hydroxyphenoxide) complex rather than the chelating catecholate complex. Hydrolysis selectively gives the mu-oxo trimer (Delta,Delta,Delta)/(Lambda,Lambda,Lambda)-{(Fc(2)Bob)Ti(mu-O)}(3). The solid-state structures of the mu-oxo trimer and the bis(o-hydroxyphenoxide) complex show that the ferrocene substituents are oriented proximal to the biphenyl backbone rather than pointed out toward the exogenous groups. The complexes show dramatic changes in color depending on the bound anions, ranging from the red isopropoxide (lambda(max) = 489 nm) to the green bis(di(4-nitrophenyl)phosphate) (lambda(max) = 653 nm). The oxidation potentials of the ferrocenes show modest shifts based on the titanium environment, but the redox potentials of the two ferrocenes are never separated by more than 60 mV. These results and those of density-functional theory (DFT) calculations indicate that the titanium interacts principally with the lowest unoccupied molecular orbital (LUMO) of the ferrocenyldiketonate and very little with its highest occupied molecular orbital (HOMO).

  11. Practitioner's guide to health informatics

    CERN Document Server

    Braunstein, Mark

    2015-01-01

    ""This book will be a terrific introduction to the field of clinical IT and clinical informatics"" -- Kevin Johnson ""Dr. Braunstein has done a wonderful job of exploring a number of key trends in technology in the context of the transformations that are occurring in our health care system"" -- Bob Greenes ""This insightful book is a perfect primer for technologists entering the health tech field."" -- Deb Estrin ""This book should be read by everyone.​"" -- David Kibbe This book provides care providers and other non-technical readers with a broad, practical overview of the changi

  12. Improving the capacity of the Boström-Felbinger protocol

    Science.gov (United States)

    Cai, Qing-Yu; Li, Bai-Wen

    2004-05-01

    We show that the capacity of the Boström-Felbinger (ping-pong) protocol [Phys. Rev. Lett. 89, 187902 (2002)] can be doubled by introducing two additional unitary operations. In message mode, Alice can use one of the four unitary operations to encode two classical bits of information. Bob can decode Alice’s information by using a Bell-basis measurement. Security against eavesdropping attack can be ensured by using two conjugate measurement bases in control mode. A message authentification method can protect this communication against a man-in-the-middle attack without eavesdropping.

  13. Quantum three-pass cryptography protocol

    Science.gov (United States)

    Yang, Li; Wu, Ling-An; Liu, Songhao

    2002-09-01

    We present a new kind of quantum cryptography protocol based on Shamir's three-pass protocol of classical cryptography, which allows the transmission of qubits directly and secretly via the aid of an unjammable classical channel. In this protocol we implement the encryption and decryption transformations via rotations on the Poincare sphere of the photons polarization parameters. The key technique is that Bob's encryption rotation must be commutative with Alice s decryption rotation; this means that the axes of these two rotations must be parallel. We also present a security analysis of the protocol under a man-in-the-middle attack.

  14. QKD Quantum Channel Authentication

    OpenAIRE

    Kosloski, J. T.

    2006-01-01

    Several simple yet secure protocols to authenticate the quantum channel of various QKD schemes, by coupling the photon sender's knowledge of a shared secret and the QBER Bob observes, are presented. It is shown that Alice can encrypt certain portions of the information needed for the QKD protocols, using a sequence whose security is based on computational-complexity, without compromising all of the sequence's entropy. It is then shown that after a Man-in-the-Middle attack on the quantum and c...

  15. Kibel groups and their dynamic perspective

    DEFF Research Database (Denmark)

    Heinskou, Torben

    2010-01-01

    Interpersonal Model. Katja Hajek The groupworker as consultant to the group. Adam Jefford, Bhupinderjit Kaur Pharwaha and Alistair Grandison Running structured problem solving groups on acute wards. Susan J. Grey Psychodynamically informed groupwork with patients with psychosis:Challenges for co...... wards into therapeutic communities? Leonard Fagin The relevance of the entire team to practicing groupwork on the ward. Bob Harris Acute wards: Context, pressures and satisfactions. Frank Holloway Reflections on the psychodynamics of an acute ward: Bion’s work in practice. Richard Duggins Containing...

  16. Carbohydrates, uronic acids and alkali extractable carbohydrates in contrasting marine and estuarine sediments: Distribution, size fractionation and partial chemical characterization

    Digital Repository Service at National Institute of Oceanography (India)

    Khodse, V.B.; Fernandes, L.; Bhosle, N.B.; Sardessai, S.

    and Vogelsang, 2006). The dispersal of sediment in the deep sea, delivered by the rivers is due to slumping turbidity current transport along these channels and valleys. Such a river supply of carbohydrate rich terrigenous material at station BOB-3 deep... determined by HPLC- PAD. Marine Chemistry 57, 85-95. Chauhan, O.S., Vogelsang, E., 2006. Climate induced changes in the circulation and dispersal patterns of the fluvial sources during late Quaternary in the middle Bengal Fan.;#23#23#23Journal of Earth...

  17. Apparatus and method for measuring viscosity

    Science.gov (United States)

    Murphy, Jr., Robert J.

    1986-01-01

    The present invention is directed to an apparatus and method for measuring the viscosity of a fluid. This apparatus and method is particularly useful for the measurement of the viscosity of a liquid in a harsh environment characterized by high temperature and the presence of corrosive or deleterious gases and vapors which adversely affect conventional ball or roller bearings. The apparatus and method of the present invention employ one or more flexural or torsional bearings to suspend a bob capable of limited angular motion within a rotatable sleeve suspended from a stationary frame.

  18. Asiakaslähtöinen markkinointi : Käsityöyrityksen keinot

    OpenAIRE

    Ainasoja, Anja

    2015-01-01

    Opinnäytetyössä haluttiin saada selville kuinka käsityöyrittäjät voisivat markkinoinnissaan ottaa paremmin huomioon heidän asiakkaansa. Tutkimusongelma oli: kuinka käsityöyritykset pystyisivät markkinoimaan tuotteitaan ja yritystään asiakaslähtöisesti. Asiakaslähtöistä markkinointia ja käsityöyrityksen keinoja siihen tarkasteltiin Bob Lauterbornin 4C-mallin avulla. Opinnäytetyö on toiminnallinen ja se muodostuu asiakaslähtöiseen markkinointiin liittyvien osa- alueiden teoriasta käsityöyr...

  19. Hello my dear society,how pretty we are! On protest without demand

    Directory of Open Access Journals (Sweden)

    Ilija Petronevic

    2009-12-01

    Full Text Available I’m not so sure everybody remembers Bob Marley’s song Burnin’ and lootin’. The French film Mathieu Kassovitz used it in his movie La Haine (1995 in an attempt to poeticise the clashes between the police and young rebels in the suburbs of Paris. 13 years after the movie, and 50 years after Burnin’and lootin’, Parisian duo Justice released their album Cross (ED Banger record label. The videoclip of the piece titled Stress again about violence in Parisian suburbs, yet the gap between the discourse employed by Kassovitz and Marley, on the one hand, and Justice’s Stress, on the other hand, is great.

  20. Summary Robert Noyce and the invention of Silicon Valley

    CERN Document Server

    2014-01-01

    This work offers a summary of the book "THE MAN BEHIND THE MICROCHIP: Robert Noyce and the Invention of Silicon Valley""by Leslie Berlin.The Man behind the Microchip is Leslie Berlin's first book. This author is project historian for the Silicon Valley Archives, a division of the Stanford University Department of Special Collections. This book tells the story of a giant of the high-tech industry: the multimillionaire Bob Noyce. This co-founder of Fairchild Semiconductor and Intel co-invented the integrated circuit which became the electronic heart of every modern computer, automobile, advance

  1. KSC-04PD-0392

    Science.gov (United States)

    2004-01-01

    KENNEDY SPACE CENTER, FLA. At the SRB Assembly and Refurbishment Facility, STS-114 Commander Eileen Collins (center) is flanked by Bob Herman (left), SRB deputy associate program manager with United Space Alliance, and Jim Carleton (right), director, SRB Program Management, as they walk past solid rocket booster aft skirts. The crew is at KSC for familiarization with Shuttle and mission equipment. The STS-114 mission is Logistics Flight 1, which is scheduled to deliver supplies and equipment, plus the external stowage platform, to the International Space Station.

  2. School Foucault pendulum

    Science.gov (United States)

    Lacsny, Boris; Štubna, Igor; Teleki, Aba

    2014-11-01

    A Foucault pendulum was assembled for a university/high-school physics course. The pendulum is 2.85 m long and the mass of the bob is 4.70 kg. A new technique based on the spark burned points on a sheet of paper was used to register the pendulum’s motion. A Ruhmkorff induction coil was used as a high-voltage source. Plots of the elliptical trajectories (except the first trajectory, which is a straight line) can be created and the angles between the major axes of the ellipses can be determined after assigning the coordinates to the burned points.

  3. Note: A 1-m Foucault pendulum rolling on a ball

    Science.gov (United States)

    Salva, H. R.; Benavides, R. E.; Venturino, J. A.; Cuscueta, D. J.; Ghilarducci, A. A.

    2013-10-01

    We have built a short Foucault pendulum of 1-m length. The aim of this work was to increase the sensitivity to elliptical trajectories from other longer pendula. The design was a semi-rigid pendulum that rolls over a small ball. The measurements of the movements (azimuth and elliptical trajectory) were done by an optical method. The resulting pendulum works in a medium satisfactory way due to problems of the correct choice of the mass of the bob together with the diameter of the supporting ball. It is also important to keep the rolling surface very clean.

  4. 2004年全国英语高考(河北、河南、山东等地区)试题分析(下)

    Institute of Scientific and Technical Information of China (English)

    蒋英

    2005-01-01

    <正> (阅读理解续)B篇GivingBackFair WayThe Westborough High School golf team had taken the official photos with the state prize. The other teams, dis-appointed, were on the bus heading home. And then Westborough instructor Greg Rota noticed something wrong onone of the score cards. A9 had been recorded as a 7. They were not the state prize winner; Wobum High had won."No one would have known," said Wobum’s instructor, Bob Doran. For Rota, it wash ’t a difficult decision: "The prizewasn’t ours to take."

  5. Standard Quantum Teleportation and Controlled Quantum Teleportation of an Arbitrary N-Qubit Information State

    Science.gov (United States)

    Verma, Vikram; Prakash, Hari

    2016-04-01

    We explicitly present precise and simple protocols for standard quantum teleportation and controlled quantum teleportation of an arbitrary N-qubit information state and analyse the case of perfect teleportation using general quantum channels and measurement bases. We find condition on resource quantum channel and Bell states for achieving perfect quantum teleportation. We also find the unitary transformation required to be done by Bob for perfect quantum teleportation and discuss the connection with others related works. We also discuss how perfect controlled quantum teleportation demands a correct choice of the measurement basis of additional party.

  6. Bidirectional teleportation of a pure EPR state by using GHZ states

    Science.gov (United States)

    Hassanpour, Shima; Houshmand, Monireh

    2016-02-01

    In the present paper, a novel bidirectional quantum teleportation protocol is proposed. By using entanglement swapping technique, two GHZ states are shared as a quantum channel between Alice and Bob as legitimate users. In this scheme, based on controlled-not operation, single-qubit measurement, and appropriate unitary operations, two users can simultaneously transmit a pure EPR state to each other, While, in the previous protocols, the users can just teleport a single-qubit state to each other via more than four-qubit state. Therefore, the proposed scheme is economical compared with previous protocols.

  7. Tripartite Quantum Controlled Teleportation via Seven-Qubit Cluster State

    Science.gov (United States)

    Li, Wei; Zha, Xin-Wei; Qi, Jian-Xia

    2016-04-01

    In this paper, a theoretical scheme for tripartite quantum controlled teleportation is presented using the entanglement property of seven-qubit cluster state. This means that Alice wants to transmit a entangled state of particle a to Bob, Charlie wants to transmit a entangled state of particle b to David and Edison wants to transmit a entangled state of particle c to Ford via the control of the supervisor. In the end, we compared the aspects of quantum resource consumption, operation complexity, classical resource consumption, quantum information bits transmitted, success probability and efficiency with other schemes.

  8. Shooting from the Trenches: On the Impossibility and Inability to think about the War

    Directory of Open Access Journals (Sweden)

    Chris van der Heijden

    2013-06-01

    Full Text Available In this essay Chris van der Heijden (Dat nooit meer [Never Again] answers his critics. He accepts in general what Bob Moore says, although his criticism is rather abstract. He does agree partly with Koes Aerts, but not on some crucial points – for example the method. Van der Heijden doesn’t agree at all with Wielenga, not so much because of arguments but exactly because of the lack of it. In the debate with Wielenga, he contends, the trench warfare, which is going on since almost ten years, simply goes on. According to Van der Heijden it leads to nothing.

  9. The distribution of the chaetognath population and its interaction with environmental characteristics in the Bay of Bengal and the Arabian Sea.

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, V.R.; Kusum, K.K.; Gireesh, R.; Nair, M.

    the open ocean waters of the AS more productive. With the exception of the inter monsoon period, the 120 m water column primary production in the AS is > 500 mg C m-2 d-1 (Prasanna Kumar et al. 2000, 2001; Gauns et al. 2005). Heavy cloud cover, high.... In the BoB, along the eastern part of the exclusive economic zone of India, sampling was done during July and August 2003 (summer monsoon, SM) and February to March 2005 (spring inter monsoon, SIM). In the AS, along the western part of the exclusive...

  10. Differential response of winter cooling on biological production in the northeastern Arabian Sea and northwestern Bay of Bengal

    Digital Repository Service at National Institute of Oceanography (India)

    Jyothibabu, R.; Maheswaran, P.A.; Madhu, N.V.; Asharaf, T.T.M.; Gerson, V.J.; Haridas, P.; Venugopal, P.; Revichandran, C.; Nair, K.K.C.; Gopalakrishnan, T.C.

    . Mohammed Ashraf, Vijay John Gerson, P. C. Haridas, P. Venugopal, C. Revichandran, K. K. C. Nair and T. C. Gopalakris h nan National Ins titute of Oceanography, Regional Centre, PB No. 1913, Kochi 682 018, I n dia The northern parts... basins, the Arabian Sea (AS) and the Bay of Bengal (BOB), is land - locked in the north by the Asian continent which separates the northern IO from the deep - reachin g vertical convection areas of the Arctic Seas and the cold climatic regions...

  11. Problem-oriented clinical microbiology and infection. 2nd. ed.

    Energy Technology Data Exchange (ETDEWEB)

    Hilary Humphreys; William, L. Irving [Royal College of Surgeons (Ireland)

    2004-08-01

    This medical textbook is problem-based, in line with current medical teaching, and covers 70 clinical cases. This second edition has been updated to include new material on AIDS/HIV, emerging antibiotic-resistant bacteria and new viral pathogens such as SARS. Sections are headed; Skin and mucous membranes; Respiratory tract; Gastrointestinal system which includes a case study entitled: Bob, a 55-year-old retired coal miner with abdominal pain; Genito-urinary system; Central nervous system; Systemic infections; Pregnancy and the neonate; and Miscellaneous. 29 ills., 125 photos.

  12. Simulation System Optimization for Rotorcraft Research on the Vertical Motion Simulator

    Science.gov (United States)

    Beard, Steven D.; Reardon, Scott; Tobias, Eric Luke; Aponso, Bimal Lalith

    2012-01-01

    A handling qualities experiment was run on the Vertical Motion Simulator using the GenHel math model configured for a UH60A Blackhawk helicopter. In order to obtain valid handling qualities ratings, the simulation system including the math model were optimized to provide realistic cues. The aircraft math model was adjusted to account for the simulator motion system delays and the motion systems gains and washouts were tuned for the bob-up, precision hover and sidestep tasks. The handling qualities ratings from this experiment showed good correlation to flight ratings.

  13. Secure quantum sealed-bid auction

    Science.gov (United States)

    Naseri, Mosayeb

    2009-05-01

    A new experimentally feasible and secure quantum sealed-bid auction protocol using quantum secure direct communication based on GHZ states is proposed. In this scheme all bidders Bob, Charlie, … , and Zach use M groups n-particle GHZ states to represent their bids. Here, an auctioneer gives the auction outcome by performing a sequence of n-particle GHZ-basis measurements on the final quantum states. It has been shown that using this method guarantees the honesty of the protocol, and malicious bidders can not collude with the auctioneers.

  14. Using Lasers and X-rays to Reveal the Motion of Atoms and Electrons (LBNL Summer Lecture Series)

    Energy Technology Data Exchange (ETDEWEB)

    Schoenlein, Robert [Deputy Director, Advanced Light Source

    2009-07-07

    Summer Lecture Series 2009: The ultrafast motion of atoms and electrons lies at the heart of chemical reactions, advanced materials with exotic properties, and biological processes such as the first event in vision. Bob Schoenlein, Deputy Director for Science at the Advanced Light Source, will discuss how such processes are revealed by using laser pulses spanning a millionth of a billionth of a second, and how a new generation of light sources will bring the penetrating power of x-rays to the world of ultrafast science.

  15. 窃听信道下的认证信道容量%Authentication Capacity Over Wiretap Channel

    Institute of Scientific and Technical Information of China (English)

    陈大江; 秦臻; 秦志光

    2015-01-01

    Message authentication is an interactive procedure that allows a legitimate sender Alice to send and authenticate a message M to a legitimate receiver Bob. To prevent the attacks from an adversary Eve, Alice and Bob usually share a secret key K. In this paper, we study a novel authentication framework as follows. Firstly, Alice sends a message M to Bob over a noiseless channel;Secondly, Alice generates an authentication tag with the message M and secret key K; Thirdly, Alice encodes the tag into a codeword Xn; Finally, Alice transmits the codeword Xn to Bob over a wiretap channel. This paper defines an authentication channel capacity under a fixed tag rate, and show that it equals to H(X|Z). Specifically, we prove that the authentication protocol proposed in Ref. [15] is capacity-achievable under our authentication model.%消息认证是合法发送方Alice传输消息M给合法的接收方Bob并向Bob认证M的交互过程。为了防止敌手Eve的攻击,Alice和Bob通常共享了一个安全密钥。该文考察如下认证框架:Alice首先通过无噪声信道将消息M发送给Bob;Alice接着利用消息M和安全密钥K生成一个认证标签;Alice再将认证标签转化为码字Xn;最后,Alice通过窃听信道模型将码字Xn传输给Bob。该文定义了固定标签率下的安全认证信道容量,并证明该认证信道容量等于H(X|Z)。特别地,证明了文献[15]提出的协议在该文的认证模型中是可达容量的。

  16. Dr. Space the life of Wernher von Braun

    CERN Document Server

    Ward, Bob

    2013-01-01

    Written by veteran aerospace journalist Bob Ward, who spent years investigating his subject, this biography presents a revealing but even-handed portrait of the father of modern rocketry. As he chronicles Wernher von Braun's life, Ward explodes many myths and misconceptions about the controversial genius who was a hero to some, a villain to others. The picture of von Braun that emerges is of a brilliant scientist with limitless curiosity and a drive to achieve his goals at almost any price from, developing the world's first ballistic missile used against the Allies in World War II to help

  17. Atmospheric outflow of Nutrients to the Bay of Bengal: Impact of continental sources

    Science.gov (United States)

    Sarin, Manmohan; Srinivas, Bikkina

    2014-05-01

    The air-sea deposition of nutrients (N, P and Fe) to the oceanic regions located downwind of pollution sources in south Asia is gaining considerable attention in the present-day scenario of climate change. We report here a case study on the abundances of nutrients, their sources and temporal variability in the atmospheric outflow from the Indo-Gangetic Plain (IGP) to the Bay of Bengal (BoB). Air mass back trajectory analysis suggests conspicuous downwind transport of chemical constituents from the IGP to BoB during the late NE-monsoon (January-April). During rest of the year, wind-regimes do not favour the atmospheric transport from the IGP, making BoB a unique oceanic region in the global perspective. Concentrations of NO3-, NH4+, NOrg, PO43- and Fews in the atmospheric outflow from the IGP, studied during November'09 - March'10, show pronounced temporal variability. The inorganic nitrogen dominates (NH4+-N: ~ 90 % of NInorg) the total soluble nitrogen (NTot). Although the contribution of organic nitrogen is not significant, the mass ratio of NOrg/NTot in the outflow varied from 0.07 to 0.40. The abundances of PInorg and Fews varied from 0.4 to 4.8 nmol m-3 and 0.2 to 0.6 nmol m-3, respectively. The high abundance of K+and significant (P-value iron (FeTot: 60-1144 ng m-3), its fractional solubility (Fews %: 6.7 -26.5) and co-variability of Fews (%) with nss-SO42- suggests chemical processing of alluvial dust during atmospheric transport from the IGP. The characteristic mass ratios of nutrients (NInorg/NTot: 0.92 ± 0.13, NOrg/NTot: 0.21 ± 0.11, and PInorg/nss-Ca2+: 0.35 ± 0.23) in the atmospheric outflow from the IGP show striking similarity with those reported over the BoB. These results have implications to further increase in the atmospheric deposition of nutrients and their impact on biogeochemistry of surface Bay of Bengal.

  18. Matters of Gravity, the newsletter of the APS Topical Group on Gravitation, Fall 2005

    CERN Document Server

    Pullin, J

    2005-01-01

    GGR News: The WYP speakers program, by Richard Price We hear that..., by Jorge Pullin 100 Years ago, by Jorge Pullin Research Briefs: What's new in LIGO, by David Shoemaker Recent developments in the information loss paradox, by Eanna Flanagan Gravity Probe B mission ends, by Bob Kahn Conference reports: 6th Edoardo Amaldi Meeting, by Matthew Benacquista Workshop on Numerical Relativity, BIRS, by Carsten Gundlach 8th Capra Meeting on Radiation Reaction, by Leor Barack Theory and experiment in quantum gravity, by Elizabeth Winstanley

  19. 锂离子电池电解质的新型锂盐——双乙二酸硼酸锂%A New Type of Lithium Salt Used as Electrolyte Salt of Lithium Ion Battery-Lithium Bis (oxalate) borate

    Institute of Scientific and Technical Information of China (English)

    李世友; 马培华; 滕祥国; 李法强; 任齐都

    2007-01-01

    介绍了一种新型锂盐--双乙二酸硼酸锂(LiBOB)的基本性质及制备进展,并重点综述了其在锂电中应用的有关研究,包括基于LiBOB电解液的导电性研究,对负极材料、正极材料的稳定性研究,与其他锂盐在锂离子电池中混合使用的性能研究等.

  20. 锂离子电池电解质用含硼锂盐研究进展%Research progress of boron-based lithium salts for lithium ion batteries

    Institute of Scientific and Technical Information of China (English)

    崔孝玲; 李世友; 毛丽萍; 李法强

    2013-01-01

    电解质材料是锂离子电池的关键材料之一.LiBF4、双草酸硼酸锂(LiBOB)及草酸二氟硼酸锂(LiODFB)是极具应用前景的3种含硼锂盐.介绍了3种锂盐各自的优缺点及研究近况,重点综述了它们的离子传导特性及与电极材料的相容性能.

  1. Video News Release WEB: CERN OPENLAB

    CERN Multimedia

    CERN Video productions

    2012-01-01

    New phase for Openlab 00 :00 -00 :11 : titres 00 :12 -00 : 38 : logo Openlab + footage CERN computing centre 00 :39- 01 :38 : interview of Bob Jones Head of CERN openlab 01 :39 – 01 :55 : footage computing centre 01 :56- 03 :09 : interview of Sverre Jarp , CERN openlab Chief Technology Officer 03 :10-04 :02 : footage technical rack computing centre 04 :03- 04 :56 : second interview of Sverre Jarp about éducation 04 :57- 05 :58 : interview of Andrzej Nowak staff researcher of CERN openlab 05 :59- END : others footage of computing center

  2. Improving the security of arbitrated quantum signature against the forgery attack

    Science.gov (United States)

    Zhang, Ke-Jia; Zhang, Wei-Wei; Li, Dan

    2013-08-01

    As a feasible model for signing quantum messages, some cryptanalysis and improvement of arbitrated quantum signature (AQS) have received a great deal of attentions in recent years. However, in this paper we find the previous improvement is not suitable implemented in some typical AQS protocols in the sense that the receiver, Bob, can forge a valid signature under known message attack. We describe the forgery strategy and present some corresponding improved strategies to stand against the forgery attack by modifying the encryption algorithm, an important part of AQS. These works preserve the merits of AQS and lead some potential improvements of the security in quantum signature or other cryptography problems.

  3. A Electronic Voting Scheme Achieved by Using Quantum Proxy Signature

    Science.gov (United States)

    Cao, Hai-Jing; Ding, Li-Yuan; Yu, Yao-Feng; Li, Peng-Fei

    2016-06-01

    In this paper, we propose a new electronic voting scheme using Bell entangled states as quantum channels. This scheme is based on quantum proxy signature. The voter Alice, vote management center Bob, teller Charlie and scrutineer Diana only perform single particle measurement to realize the electronic voting process. So the scheme reduces the technical difficulty and increases operation efficiency. It can be easily realized. We use quantum key distribution and one-time pad to guarantee its unconditional security. The scheme uses the physical characteristics of quantum mechanics to guarantee its anonymity, verifiability, unforgetability and undeniability.

  4. Reaserch progress in lithium bis(oxalate) borate used in liquid electrolyte and polymer electrolyte%双乙二酸硼酸锂在液、固电解质中的研究进展

    Institute of Scientific and Technical Information of China (English)

    宋洋; 乔庆东

    2008-01-01

    介绍了双乙二酸硼酸锂(LiBOB)的电化学性能和在高温下的热稳定性,概述了LiBOB应用于液体电解质中关于电极与电解质界面问的SEI膜、电池阻抗和电解质中溶剂方面的研究现状,介绍了它在聚合物电解质中的一些新的研究进展,并展望LiBOB的发展方向.

  5. The Ets factor Spi-B is a direct critical target of the coactivator OBF-1

    OpenAIRE

    Bartholdy, Boris; Du Roure, Camille; Bordon, Alain; Emslie, Dianne; Corcoran, Lynn M.; Matthias, Patrick

    2006-01-01

    OBF-1 (Bob.1, OCA-B) is a lymphoid-specific transcriptional coactivator that associates with the transcription factors Oct-1 or Oct-2 on the conserved octamer element present in the promoters of several ubiquitous and lymphoid-specific genes. OBF-1-deficient mice have B cell-intrinsic defects, lack germinal centers, and have severely impaired immune responses to T cell-dependent antigens. Crucial genes that are regulated by OBF-1 and that might explain the observed phenotype of OBF-1 deficien...

  6. Improving the security of arbitrated quantum signature protocols

    CERN Document Server

    Sun, Zhiwei; Long, Dongyang

    2011-01-01

    Arbitrated quantum signatures (AQS), for signing quantum message, have been proposed. It was claimed that the AQS schemes could guarantee unconditional security. However, we show that all the presented AQS protocols are insecure if quantum one-time pad encryption is used. Our attack and security analysis show that the signer (Alice) can always successfully acquire Bob's secret key and disavow any of her signatures. So the original version of the protocol is revised. As a consequence, the attack we present can be prevented, and accordingly the security of the protocol is improved.

  7. The dynamics of coercion and fear in 'Where are you going, where have you been?', a story by Joyce Carol Oates

    OpenAIRE

    Mancelos, João de

    2013-01-01

    “Where Are You Going, Where Have You Been?” (1966) is Joyce Carol Oates’s most celebrated and anthologized short story, adapted to the cinema in 1985 (Smooth Talk, directed by Joyce Chropa). The narrative was inspired by a Life magazine article on serial killer Charles Schmid, who murdered several girls just to know what it felt like, and by the author’s interpretation of Bob Dylan’s famous song “It’s All Over Now, Baby Blue”. The tense plot presents a persuasive and menacing young man, A...

  8. Editorial: The times they are A-Changin

    OpenAIRE

    Harcourt, Wendy

    2012-01-01

    textabstractThe famous1963 song by Bob Dylan The Times They Are A-Changing rings true in the year 2011. As in the1960s, there are young and old people on the streets demanding change to the economic system, an end of war, climate justice, women’s rights, gender equity and true democracy. The year has seen Arab revolutions, European governments toppling, faltering banking systems, and the occupation movement full of young and old spreading the message of the 99 percent fromWall Street to 900 c...

  9. A Bridge Too Far?

    DEFF Research Database (Denmark)

    Carter, Dale

    2010-01-01

    This article offers an interpretive reading of the Anglo-American folk music revival, from its post-war roots to the early 1960s. The nature and development of the revival, it argues, can be illuminated by the multi-faceted concept of cosmopolitanism, a property rarely associated with such expres...... in turn fostered tensions within the revival. These tensions, it concludes, transformed folk's cosmopolitanism and marginalized Lomax and MacColl; an appreciation of them throws new light on folk music and on the meaning of Bob Dylan's emergence from the revival in the early 1960s....

  10. INNOVATIVE METHOD TO PRACTICE & IMPROVE THE GAME OF CRICKET

    OpenAIRE

    Syed Tariq Murtaza; Mohd. Imran; Mohd Sharique

    2015-01-01

    The game of cricket has a magnificent past and a complex history (Bob Woolmer 2008). It relishes 400-Odd years of annals (Murtaza S. T. & et. al. 2014). Authors believe that it has been originated from the ancient sport of India i.e. Gilli Danda (Tipcat in English) which has possibly the origin over 2500 years ago (Steve Craig-2002 & John Arlott-1975). Cricket was taken by the British to their Colonies & started playing & expanding into every continent on the globe. Modern day’...

  11. Who calls the tune?

    Directory of Open Access Journals (Sweden)

    Claude Chastagner

    2011-04-01

    Full Text Available The real action was taking place behind the scenes.Irwin Pincus, music publisherA couple of weeks ago, while researching for this paper, I decided to read again Chronicles, Bob Dylan’s autobiography. Chapter 4 deals with the recording in a rented New Orleans mansion of Oh Mercy, the 1989 album produced by Daniel Lanois, unanimously hailed as Dylan’s resurrection. Dylan insists on the significant impact Lanois had on his own artistry. Through conversations, flashes of rage and frustration, and...

  12. 迪士尼大肆收购数字公司背后的行为逻辑

    Institute of Scientific and Technical Information of China (English)

    安迪·菲克斯莫(Andr Fixmer); 罗纳德·格罗弗(Ronald Grover); 道格拉斯·麦克米伦(Douglas MacMillan); 肖前(译)

    2010-01-01

    4年前,迪士尼公司(Walt Disney)首席执行官鲍伯·艾格(Bob Iger)试图创建手手机业务。迪士尼创办了家庭导向型移动服务,其中包括全球定位系统,这样家长就能跟踪孩子的动向。签约的消费者寥寥无几,于是公司在15个月后终止了这项业务。

  13. A Electronic Voting Scheme Achieved by Using Quantum Proxy Signature

    Science.gov (United States)

    Cao, Hai-Jing; Ding, Li-Yuan; Yu, Yao-Feng; Li, Peng-Fei

    2016-09-01

    In this paper, we propose a new electronic voting scheme using Bell entangled states as quantum channels. This scheme is based on quantum proxy signature. The voter Alice, vote management center Bob, teller Charlie and scrutineer Diana only perform single particle measurement to realize the electronic voting process. So the scheme reduces the technical difficulty and increases operation efficiency. It can be easily realized. We use quantum key distribution and one-time pad to guarantee its unconditional security. The scheme uses the physical characteristics of quantum mechanics to guarantee its anonymity, verifiability, unforgetability and undeniability.

  14. Beginning AutoCAD 2005

    CERN Document Server

    McFarlane, Bob

    2005-01-01

    Beginning AutoCAD 2005 is a course based on learning and practising the essentials of 2D drawing using AutoCAD. Bob McFarlane's hands-on approach is uniquely suited to independent learning and use on courses. The focus on 2D drawing in one book, ensures the reader gets a thorough grounding in the subject, with a greater depth of coverage than tends to be available from general introductions to AutoCAD. As a result, this book provides a true, step-by-step, detailed exploration of the AutoCAD functions required at each stage of producing a 2D drawing - an approach often

  15. Office 2011 for Mac For Dummies

    CERN Document Server

    LeVitus, Bob

    2011-01-01

    Get started with Office 2011 for Mac and discover the creative possibilitiesThe leading suite of productivity software for the Mac, Microsoft Office helps users complete common business tasks, including word processing, e-mail, presentations, financial analysis, and much more. Office 2011 for Mac For Dummies is the perfect companion for Microsoft Office for Mac users upgrading to the newest version, new computer users, and those who may have switched from the Windows version of Office. Written by one of the most popular gurus in the Mac community, Bob "Dr. Mac" LeVitus, the book explains every

  16. Swipe this! the guide to great touchscreen game design

    CERN Document Server

    Rogers, Scott

    2012-01-01

    Learn to design games for tablets from a renowned game designer! Eager to start designing games for tablets but not sure where to start? Look no further! Gaming guru Scott Rogers has his finger on the pulse of tablet game design and is willing to impart his wisdom and secrets for designing exciting and successful games. As the creator of such venerable games as God of War, the SpongeBob Squarepants series, and Pac-Man World, to name a few, Rogers writes from personal experience and in this unique book, he hands you the tools to create your own tablet games for the iPad, Android tablets, Ninten

  17. Preliminary bedrock geologic map of part of the northern disturbed belt, Lewis and Clark, Teton, Pondera, Glacier, Flathead, and Powell Counties, Montana

    Science.gov (United States)

    Mudge, Melville R.; Earhart, Robert L.; Rice, Dudley D.; Heisey, E.L.

    1977-01-01

    The geologic map covers the Sawtooth and Lewis and Clark Ranges and part of the Flathead Range. It includes most of the disturbed belt in northwestern Moutana except the area east of the northern Rocky Mountains and the norhtern and southern parts of the belt. Most data are from an unpublished map of the Bob Marshall Wilderness and of the many proposed additions to the Wilderness. Strike and dip symbols are omitted from the map, and all contacts are shown in solid lines, alhough locally they are inferred beneath a Quaternary cover. Future studies will complete mapping of the northern disturbed belt in Montana.

  18. Synoptic weather conditions during BOBMEX

    Indian Academy of Sciences (India)

    S R Kalsi

    2003-06-01

    We document the flow features, which are associated with the important synoptic systems that affected the Bay of Bengal (BoB) and its neighbourhood and controlled the convective activity there during BOBMEX. The monsoon during July and August, 1999 was subdued. It was slightly more active in the initial phase of BOBMEX that commenced on 15th July 1999 and continued up to first week of August 1999 but weakened during the second half of August. The convection was accordingly affected, reducing the rainfall over India. There were several active and weak spells of convection over the Bay of Bengal that manifested in five low pressure systems, of which twobecame depressions.

  19. Research progress in lithium bis(oxalato)borate for Li-ion battery electrolytes%锂离子电池电解质锂盐双草酸硼酸锂的研究进展

    Institute of Scientific and Technical Information of China (English)

    田光耀; 乔庆东; 李琪

    2010-01-01

    介绍了新型锂盐双草酸硼酸锂(LiBOB)的基本性质,归纳了其合成、检测和提纯方法,重点阐述了LiBOB在石墨类负极上的成膜性能,综述了LiBOB的溶解性和电导率、热稳定性及在固体电解质中的应用,总结了LiBOB基电解质的不足,指明了其未来的研究方向.

  20. Research progress in lithium bis(oxalato) borate for Li-ion battery electrolytes%锂离子电池电解质盐双草酸硼酸锂的研究进展

    Institute of Scientific and Technical Information of China (English)

    王赛; 仇卫华; 余碧涛; 赵海雷

    2006-01-01

    介绍了双草酸硼酸锂(LiBOB)的基本性质,综述了LiBOB合成方法和应用情况,并对LiBOB与石墨负极匹配、高温稳定性、在溶剂中的溶解性、电导率和安全性等问题进行了论述,对研究方向也进行了简单的阐述.