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Sample records for zhang receives nsf

  1. w zhang

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. W ZHANG. Articles written in Bulletin of Materials Science. Volume 41 Issue 2 April 2018 pp 51. Effect of oxygen vacancies on Li-storage of anatase TiO 2 (001) facets: a first principles study · H CHEN Y H DING X Q TANG W ZHANG J R YIN P ZHANG Y JIANG · More Details ...

  2. p zhang

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. P ZHANG. Articles written in Bulletin of Materials Science. Volume 41 Issue 2 April 2018 pp 51. Effect of oxygen vacancies on Li-storage of anatase TiO 2 (001) facets: a first principles study · H CHEN Y H DING X Q TANG W ZHANG J R YIN P ZHANG Y JIANG · More Details ...

  3. zhang xiurong

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. ZHANG XIURONG. Articles written in Bulletin of Materials Science. Volume 41 Issue 2 April 2018 pp 48. Structures and electronic properties of W m Cu n ( n + m ≤ 7 ) clusters · YU ZHICHENG ZHANG XIURONG HUO PEIYING GAO KUN · More Details Abstract Fulltext PDF.

  4. Ping Zhang

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. PING ZHANG. Articles written in Bulletin of Materials Science. Volume 36 Issue 6 November 2013 pp 1073-1077. Intrinsic structure and friction properties of graphene and graphene oxide nanosheets studied by scanning probe microscopy · Yan-Huai Ding Hu-Ming Ren Fei-Hu ...

  5. dujuan zhang

    Indian Academy of Sciences (India)

    Home; Journals; Bulletin of Materials Science. DUJUAN ZHANG. Articles written in Bulletin of Materials Science. Volume 41 Issue 2 April 2018 pp 59. In vitro bioactivity evaluation of α -calcium sulphate hemihydrate and bioactive glass composites for their potential use in bone regeneration · YANYAN ZHENG CHENGDONG ...

  6. Zhang functions and various models

    CERN Document Server

    Zhang, Yunong

    2015-01-01

    This book focuses on solving different types of time-varying problems. It presents various Zhang dynamics (ZD) models by defining various Zhang functions (ZFs) in real and complex domains. It then provides theoretical analyses of such ZD models and illustrates their results. It also uses simulations to substantiate their efficacy and show the feasibility of the presented ZD approach (i.e., different ZFs leading to different ZD models), which is further applied to the repetitive motion planning (RMP) of redundant robots, showing its application potential.

  7. "Pipa Fairy Maiden" Zhang Hongyan

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    WHEN Zhang Hongyan plays the completely traditional Chinese musical instrument, the pipa, she is called a "pipa fairy maiden" by her audiences, "the pipa queen with outstanding talent and appearance" by the Hong Kong press and "a national flower of the Women Philharmonic Orchestra" in Singapore. Having completed her master’s degree program at the folk music department of the Central Conservatory of Music. Zhang is continuing there as a teacher. On the unforgettable night of June 9, 1992, Zhang Hongyan presented her first solo concerto concert at the Beijing Concert Hall, in cooperation with the celebrated Central Philharmonic Orchestra based in Beijing and its famous conductor Hu Yongyan. This concert made her the first folk musical instrument player to present a special concerto concert in cooperation with a Western style orchestra. It is the result of many years of effort. Zhang was born in Shengxian County, Zhejiang Province, famous as the home of Yue Opera. Her father is a musician with a Yue Opera

  8. Zhang Qing and His Meticulous Chinese Paintings

    Institute of Scientific and Technical Information of China (English)

    JULIE; M.SEGRAVES

    2002-01-01

    ZHANG Qing was initially drawn to the bird and flower paint-ings of the Tang and Song dynasties (7th-12th centuries). Later,Qing Dynasty (1644-1911) artist Ren Bonian, famous for hispaintings of figures, also became an important influence.Although Zhang Qing considers his style to be firmly rooted in tradi-

  9. NSF's Career-Life Balance Initiative and the NSF Astronomy and Astrophysics Postdoctoral Fellowships

    Science.gov (United States)

    Ajhar, Edward A.

    2013-01-01

    In the fall of 2011, the National Science Foundation (NSF) began the Career-Life Balance Initiative to support graduate students, postdoctoral students, and early-career researchers in STEM fields. NSF is focusing first on its most prestigious programs for early-career scientists---the CAREER program and the postdoctoral programs, including the NSF Astronomy and Astrophysics Postdoctoral Fellowships (AAPF)---where career-life balance opportunities can help retain a significant fraction of early career talent. Subject to budget constraints, NSF plans to further integrate and enhance career-life balance opportunities over time through other programs, like the Graduate Research Fellowships Program and ADVANCE, and subsequently through the broader portfolio of NSF activities. In addition, to comply with Title IX, NSF has regulations to ensure that educational programs that receive NSF funds are free of gender discrimination and harassment. A primary goal of this presentation is to put facts about NSF into the hands of students, faculty, staff, administrators and other policy makers to benefit the advancement of career-life balance in the astronomical community. The presentation focus areas will (1) address common misconceptions about NSF rules regarding parental leave; (2) discuss benefits already available through the AAPF program, Graduate Research Fellowships, and other programs; and (3) listen to community concerns and issues to bring these back to the foundation for consideration. Did you know that NSF allows paid parental leave under many circumstances? For example, the AAPF program currently allows two months of paid parental leave during the fellow's tenure. What are the rules for NSF Graduate Research Fellowships? Come to the session and find out; the answers to such questions might surprise you.

  10. Twist of Magnetic Fields in Solar Active Regions Hongqi Zhang ...

    Indian Academy of Sciences (India)

    tribpo

    in active regions also shows the butterfly pattern through the solar cycle. And, less than 30% of the active regions do not follow the general trend (Zhang & Bao 1998). The longitudinal distribution of current helicity parameter h|| of active regions in both the hemispheres in the last decade was presented by Zhang & Bao ...

  11. Further investigations on a question of Zhang and Lü

    Directory of Open Access Journals (Sweden)

    Abhijit Banerjee

    2015-09-01

    Full Text Available In the paper taking the question of Zhang and Lü [15] into background, wepresent one theorem which will improve and extend results of Banerjee-Majumdar [2] and arecent result of Li-Huang [9].

  12. On soliton solutions of the Wu-Zhang system

    Directory of Open Access Journals (Sweden)

    Inc Mustafa

    2016-01-01

    Full Text Available In this paper, the extended tanh and hirota methods are used to construct soliton solutions for the WuZhang (WZ system. Singular solitary wave, periodic and multi soliton solutions of the WZ system are obtained.

  13. NSF-CBMS Regional Conference

    CERN Document Server

    Rubenfeld, Lester

    1981-01-01

    The articles of these proceedings arise from a NSF-CBMS regional conference on the mathematical modeling of the hearing process, that was held at Rensselaer Polytechnic Institute in the summer of 1980. To put the a=ticles in perspective, it is best to briefly review the history of suc~ modeling. It has proceeded, more or less, in three stages. The first was initiated by Herman Helmholtz in the 1880's, whose theories dominated the subject for years. However, because of his lack of accurate experimental data and his heuristic arguments it became apparent that his models needed revision. Accordingly, based on the experimental observations of von Bekesy, the "long wave" theories were developed in the 1950's by investigators such as Zwislocki, Peterson, and Bogert. However, as the ex?eri~ents became more refined (such as Rhode's ~wssbauer Measurements) even these models came into question. This has brought on a flurry of 'activity in recent years into how to extend the models to account for these more recent eXT. ...

  14. Opportunities for Funding at NSF

    Science.gov (United States)

    Kafafi, Zakya H.

    2009-03-01

    lead to a better quality of life and improved economic development for people all over the world will also be given. As science is becoming increasingly global, DMR is particularly interested in preparing students to be agile thinkers in this universal environment and in forging collaborations and cooperation among scientists and engineers around the world. Free movement of knowledge without any obstacles can only be achieved through a more coordinated approach for international collaboration. Following the presentation there will be a question-and-answer period. For additional information, visit the DMR Web page at www.nsf.gov/materials

  15. Mortal Ancestors, Immortal Images: Zhang Dai’s Biographical Portraits

    OpenAIRE

    Duncan M. Campbell

    2012-01-01

    Towards the end of his long life, the prolific late-Ming historian and essayist Zhang Dai 張岱 (1597-?1684) completed a book that he had been working on for many years. Entitled Portraits of the Eminent and Worthy Immortals of Zhejiang During the Ming Dynasty (You Ming yuyue san bu xiu tuzan 有明於越三不朽名賢圖贊) the book included the short biographies (with poetic panegyrics) and portraits of 109 men and women of Zhang Dai’s hometown of Shaoxing, one of the epicentres of China’s élite cultural life. Th...

  16. Mortal Ancestors, Immortal Images: Zhang Dai’s Biographical Portraits

    Directory of Open Access Journals (Sweden)

    Duncan M. Campbell

    2012-11-01

    Full Text Available Towards the end of his long life, the prolific late-Ming historian and essayist Zhang Dai 張岱 (1597-?1684 completed a book that he had been working on for many years. Entitled Portraits of the Eminent and Worthy Immortals of Zhejiang During the Ming Dynasty (You Ming yuyue san bu xiu tuzan 有明於越三不朽名賢圖贊 the book included the short biographies (with poetic panegyrics and portraits of 109 men and women of Zhang Dai’s hometown of Shaoxing, one of the epicentres of China’s élite cultural life. The book was organised according to the “Three Immortalities of Life”: moral force, meritorious service, and wise words. Zhang also included a number of his own friends and family members in this collection. This paper discusses aspects the relationship between text and image in this late-imperial Chinese work, both in the context of Zhang Dai’s practice as a biographer who had a strong visual sense and in regard to his particular historical plight as someone who had survived the collapse of one dynasty and who had lived on under its successor regime.

  17. Relational demography in coach-athlete dyads | Zhang | African ...

    African Journals Online (AJOL)

    This study used an adapted version of Zhang's (2004) trust questionnaire to examine perceived characteristic and trust differences between coach and athlete dyads that differ in gender or ethnicity as well as in dyads that were similar. The four different gender dyad groups were male athlete with male coach (MAMC), ...

  18. [Learning experience of acupuncture technique from professor ZHANG Jin].

    Science.gov (United States)

    Xue, Hongsheng; Zhang, Jin

    2017-08-12

    As a famous acupuncturist in the world, professor ZHANG Jin believes the key of acupuncture technique is the use of force, and the understanding of the "concentrating the force into needle body" is essential to understand the essence of acupuncture technique. With deep study of Huangdi Neijing ( The Inner Canon of Huangdi ) and Zhenjiu Dacheng ( Compendium of Acupuncture and Moxibustion ), the author further learned professor ZHANG Jin 's theory and operation specification of "concentrating force into needle body, so the force arriving before and together with needle". The whole-body force should be subtly focused on the tip of needle, and gentle force at tip of needle could get significant reinforcing and reducing effect. In addition, proper timing at tip of needle could start reinforcing and reducing effect, lead qi to disease location, and achieve superior clinical efficacy.

  19. POCA Update: An NSF PAARE Project

    Science.gov (United States)

    Walter, Donald K.; Brittain, S. D.; Cash, J. L.; Hartmann, D. H.; Howell, S. B.; King, J. R.; Leising, M. D.; Mayo, E. A.; Mighell, K. J.; Smith, D. M., Jr.

    2011-01-01

    We report on the status of "A Partnership in Observational and Computational Astronomy (POCA)” under the NSF's "Partnerships in Astronomy and Astrophysics Research and Education (PAARE)" program. This partnership includes South Carolina State University (a Historically Black College/University), Clemson University (a Ph.D. granting institution) and the National Optical Astronomy Observatory. We have reached the midpoint of this 5-year award and discuss the successes, challenges and obstacles encountered to date. Included is a summary of our summer REU program, the POCA graduate fellowship program, faculty research capacity building, outreach activities, increased use of NSF facilities and shared resources. Additional POCA research presentations by the authors are described elsewhere in these proceedings. Support for this work was provided by the NSF PAARE program to South Carolina State University under award AST-0750814 as well as resources and support provided by Clemson University and the National Optical Astronomy Observatory.

  20. False become true: Christie's catalogue of Zhang Hongtu

    Directory of Open Access Journals (Sweden)

    Sandra Valenzuela Arellano

    2013-06-01

    Full Text Available By analyzing the series Christie’s Catalogue Project by the artist Zhang Hongtu, this essay traces relationships between: Cultural heritance, national identity, fakeness, popular culture and legitimacy of power structures, within contemporary China. Contemporary art creates assemblies of meanings related to its time, sometimes relating the present with history, high with vernacular culture, soft power with the construction of collective memory. This essay aims to reconstruct with words, through textual and visual analysis, those visual assemblies.

  1. ESO and NSF Sign Agreement on ALMA

    Science.gov (United States)

    2003-02-01

    Green Light for World's Most Powerful Radio Observatory On February 25, 2003, the European Southern Observatory (ESO) and the US National Science Foundation (NSF) are signing a historic agreement to construct and operate the world's largest and most powerful radio telescope, operating at millimeter and sub-millimeter wavelength. The Director General of ESO, Dr. Catherine Cesarsky, and the Director of the NSF, Dr. Rita Colwell, act for their respective organizations. Known as the Atacama Large Millimeter Array (ALMA), the future facility will encompass sixty-four interconnected 12-meter antennae at a unique, high-altitude site at Chajnantor in the Atacama region of northern Chile. ALMA is a joint project between Europe and North America. In Europe, ESO is leading on behalf of its ten member countries and Spain. In North America, the NSF also acts for the National Research Council of Canada and executes the project through the National Radio Astronomy Observatory (NRAO) operated by Associated Universities, Inc. (AUI). The conclusion of the ESO-NSF Agreement now gives the final green light for the ALMA project. The total cost of approximately 650 million Euro (or US Dollars) is shared equally between the two partners. Dr. Cesarsky is excited: "This agreement signifies the start of a great project of contemporary astronomy and astrophysics. Representing Europe, and in collaboration with many laboratories and institutes on this continent, we together look forward towards wonderful research projects. With ALMA we may learn how the earliest galaxies in the Universe really looked like, to mention but one of the many eagerly awaited opportunities with this marvellous facility". "With this agreement, we usher in a new age of research in astronomy" says Dr. Colwell. "By working together in this truly global partnership, the international astronomy community will be able to ensure the research capabilities needed to meet the long-term demands of our scientific enterprise, and

  2. Le langage des couleurs dans les films de Zhang Yimou

    OpenAIRE

    Xiaomin Giafferri

    2009-01-01

    Tout film, ou du moins tout film de fiction, est récit. Représentation visuelle et sonore, le film transpose à l’écran la réalité par un enchaînement d’images, où des traits physiques, gestes, mouvements, paysages se combinent pour former un espace de fiction. Le cinéma en tant qu’art possède un langage spécifique ; dans un film coloré, les couleurs comme moyen d’expression font partie du langage pictural. A partir de quatre films de Zhang Yimou connus en Europe, Le so...

  3. Aesthetic Function Realized in the Selected Modern Chinese Essays by Zhang Peiji

    Institute of Scientific and Technical Information of China (English)

    罗丹

    2014-01-01

    The selected modern Chinese essays translated by Zhang Peiji is a masterpiece for Chinese scholars to do translation research. Prof. Zhang not only excels at translating the Chinese works accurately but also conveys the aesthetic value in the translated version. This paper wil analyse the aesthetic function used in Zhang Peiji’s selected modern Chinese essays from five aspects, music value, rhythm value, ful-grownness value, conciseness value and artistic conception value.

  4. CAREER opportunities at the Condensed Matter Physics Program, NSF/DMR

    Science.gov (United States)

    Durakiewicz, Tomasz

    The Faculty Early Career Development (CAREER) Program is a Foundation-wide activity, offering prestigious awards in support of junior faculty. Awards are expected to build the careers of teacher-scholars through outstanding research, excellent education and the integration of education and research. Condensed Matter Physics Program receives between 35 and 45 CAREER proposals each year, in areas related to fundamental research of phenomena exhibited by condensed matter systems. Proposal processing, merit review process, funding levels and success rates will be discussed in the presentation. NSF encourages submission of CAREER proposals from junior faculty members from CAREER-eligible organizations and encourages women, members of underrepresented minority groups, and persons with disabilities to apply. NSF/DMR/CMP homepage: https://www.nsf.gov/funding/pgm_summ.jsp?pims_id=5666

  5. Le langage des couleurs dans les films de Zhang Yimou

    Directory of Open Access Journals (Sweden)

    Xiaomin Giafferri

    2009-05-01

    Full Text Available Tout film, ou du moins tout film de fiction, est récit. Représentation visuelle et sonore, le film transpose à l’écran la réalité par un enchaînement d’images, où des traits physiques, gestes, mouvements, paysages se combinent pour former un espace de fiction. Le cinéma en tant qu’art possède un langage spécifique ; dans un film coloré, les couleurs comme moyen d’expression font partie du langage pictural. A partir de quatre films de Zhang Yimou connus en Europe, Le sorgho rouge, Epouses et concubines, Judou et Hero, ce texte tente de réfléchir sur ces questions: si l’on admet que les limites du récit filmique diffèrent de celles du récit verbal, romanesque par exemple, les couleurs qui ne constituent pas un trait pertinent d’identification, participent-elle à la prise en charge de l’histoire ? Composante de l’espace filmique dont les fonctions narratives sont incontestées, sont-elle définitivement non diégétiques ?

  6. Characteristic Sign Renewals of Kardar-Parisi-Zhang Fluctuations

    Science.gov (United States)

    Takeuchi, Kazumasa A.; Akimoto, Takuma

    2016-09-01

    Tracking the sign of fluctuations governed by the (1+1)-dimensional Kardar-Parisi-Zhang (KPZ) universality class, we show, both experimentally and numerically, that its evolution has an unexpected link to a simple stochastic model called the renewal process, studied in the context of aging and ergodicity breaking. Although KPZ and the renewal process are fundamentally different in many aspects, we find remarkable agreement in some of the time correlation properties, such as the recurrence time distributions and the persistence probability, while the two systems can be different in other properties. Moreover, we find inequivalence between long-time and ensemble averages in the fraction of time occupied by a specific sign of the KPZ-class fluctuations. The distribution of its long-time average converges to nontrivial broad functions, which are found to differ significantly from that of the renewal process, but instead be characteristic of KPZ. Thus, we obtain a new type of ergodicity breaking for such systems with many-body interactions. Our analysis also detects qualitative differences in time-correlation properties of circular and flat KPZ-class interfaces, which were suggested from previous experiments and simulations but still remain theoretically unexplained.

  7. NSF-RANN Trace Contaminants Program directory

    International Nuclear Information System (INIS)

    Purnell, P.A.; Smith, S.K.; Wilkes, C.F.

    1976-10-01

    This directory is designed to aid effective communication throughout the National Science Foundation's Trace Contaminants Program, Research Applied to National Needs. The majority of the participants in the Program are represented by name, address, telephone number, and a very brief description of research interest. The directory has five major divisions to facilitate its use. Section I contains a listing of the program managers associated with the NSF-RANN Trace Contaminants Program. Section II lists the principal investigators, co-principal investigators, and coordinators of each of the research grants in the Program. Section III lists the personnel by individual projects. Section IV contains a total alphabetic listing complete with project titles and Section V contains a keyword index. This directory is maintained by the Toxic Materials Information Center as part of the Environmental Resource Center of the Information Center Complex, Information Division, Oak Ridge National Laboratory

  8. The SC State NSF PAARE Program

    Science.gov (United States)

    Walter, Donald; Ajello, Marco; Brittain, Sean; Cash, Jennifer; Fogle, Bryan; Hartmann, Dieter; Ho, Shirley; Howell, Steve; King, Jeremy; Leising, Mark; Smith, Daniel

    2018-01-01

    We report on the activities of our NSF PAARE program during Year 3 of the project. Our partnership under this award includes South Carolina State University (a Historically Black College/University), Clemson University (a Ph.D. granting institution) and individual investigators at NASA Ames and elsewhere. Our partnership with the Citizen CATE Experiment and involvement in the total solar eclipse which passed through our campus on August 21, 2017, will be discussed. The PAARE project continues to strengthen our partnership with Clemson. We are close to completing a memorandum of agreement between the two institutions that will allow for the seamless transfer of an undergraduate from SC State to Clemson’s graduate program in physics and astronomy. Additionally, we have worked together under the Citizen CATE project and through other research activities. SC State is a member of the National Astronomy Consortium (NAC) and participates through its faculty and undergraduates, one of whom (Wesley Red) is reporting on his summer internship at this conference. We also served as the state coordinator for South Carolina for the Citizen CATE Experiment. The August 21st path of totality crossed through our campus and the campus of our partner Clemson University. Additional colleges, universities and citizen scientist groups partnered with us to provide 7 sites of coverage across South Carolina from the foothills of the Appalachian mountains to the Atlantic Ocean near the site of departure of the shadow from the continental U.S. Support for this work includes our NSF PAARE award AST-1358913 as well as resources and support provided by Clemson University and the National Optical Astronomy Observatory. CATE work has been supported by NASA SMD award NNX16AB92A to the National Solar Observatory. Additional details can be found at: http://physics.scsu.edu

  9. Immunological evaluation of Lactobacillus casei Zhang: a newly isolated strain from koumiss in Inner Mongolia, China

    Directory of Open Access Journals (Sweden)

    Du Ruiting

    2008-11-01

    Full Text Available Abstract Background There is increasing evidence to suggest an immunomodulation function both within the intestines and systemically upon consuming probiotic species. We recently isolated a novel LAB, Lactobacillus caseiZhang (LcZhang from koumiss. LcZhang exhibited favorable probiotic properties, such as acid resistance, bile resistance, gastrointestinal (GI colonization ability, etc. In order to examine the immunomodulatory qualities of LcZhang, we administered LcZhang to healthy mice with varying doses of either live or heat-killed LcZhang and measured various parameters of the host immune response. Results The study was performed in four separate experiments via oral administration of live and heat-killed LcZhang to BALB/c mice for several consecutive days. We investigated the immunomodulating capacity of LcZhang in vivo by analyzing the profile of cytokines, T cell subpopulations, and immunoglobulin concentrations induced in blood serum and intestinal fluid in BALB/c mice. Only live bacteria elicited a wide range of immune responses, which include the increased production of interferon-γ (IFN-γ, and depression of tumor necrosis factor-α (TNF-α levels. In addition, interleukin-2 (IL-2 and IL-2 receptor gene transcription increased significantly, but the proportion of T cell subsets appeared to be unaffected. We also observed that LcZhang was capable of inducing gut mucosal responses by enhancing the production of secretory Immunoglobulin A (sIgA as well influencing the systemic immunity via the cytokines released to the circulating blood. Conclusion The present work shows that the dose-dependent administration of LcZhang is capable of influencing immune responses, implying that it may be a valuable strain for probiotic use in humans.

  10. NSF Funding Rate History By State and Organization

    Data.gov (United States)

    National Science Foundation — Contains FY 2006-FY 2015 National Science Foundation (NSF) funding rates for competitive research proposals by organizational unit. The funding rate is calculated by...

  11. China marks World Population Day. Address by Zhang Weiqing: (Excerpts).

    Science.gov (United States)

    Zhang, W

    1998-08-01

    This is a summary of remarks by Minister Zhang Weiqing of China's State Family Planning Commission (SFPC) given on World Population Day in China. The world's population size has increased by 1 billion since 1987, and will reach 6 billion by 1999. As the most populous developing country in the world, China has a greater population pressure and bears a large responsibility regarding stabilization of the world's population and realization of sustainable development. China has a less developed economy and a high percentage of rural and illiterate persons, many of whom are below the poverty line. The interests of both present and future generations must be taken into account with regard to development. In addition, the modernization drive must include strategies for sustainable development and basic national policies of FP and environmental protection in order to achieve a balance among population growth, the economy, resources, and the environment. After 30 years of effort, China has succeeded in solving its population problem by integrating governmental guidance with voluntary public participation in FP. In 1997, the birthrate decreased to 16.57/1000, and the total fertility rate was below replacement level. Changes in attitude toward marriage and childbearing have occurred, as has awareness of voluntary participation in FP. However, some problems have emerged in the implementation of population and FP programs. China will carry out its programs strictly and effectively while developing the national economy. Goals include: 1) stressing the IEC program regarding contraception and regular FP management and services; 2) integrating the FP program with economic development; 3) helping the public to become well off; 4) protecting maternal and child health; 5) improving the status of women; 6) delivering reproductive services; and 7) improving social security measures. Efforts will be made to enable the public to have a more active part in implementing the FP program.

  12. NSF celebrates half a century with big plans

    CERN Multimedia

    MacIlwain, C

    1999-01-01

    The future looks good for the NSF as it approaches its 50th birthday. The Clinton administration has proposed a $675 million budget increase for the agency next year. The NSF has also been asked to lead most of the government's recent science initiatives such as those in nanotechnology and computing (1 page).

  13. 48 CFR 2515.215-70 - NSF negotiation authorities.

    Science.gov (United States)

    2010-10-01

    ... CONTRACTING METHODS AND CONTRACT TYPES CONTRACTING BY NEGOTIATION Negotiation Authorities 2515.215-70 NSF negotiation authorities. (a) Authorities. Citation: 42 U.S.C. 1870(c). (b) Application. When an NSF contract... international cooperation or national security.” Contracts or their modifications entered into under this...

  14. News Focus: NSF Director Erich Bloch Discusses Foundation's Problems, Outlook.

    Science.gov (United States)

    Chemical and Engineering News, 1987

    1987-01-01

    Relates the comments offered in an interview with Erich Bloch, the National Science Foundation (NSF) Director. Discusses issues related to NSF and its funding, engineering research centers, involvement with industry, concern for science education, computer centers, and its affiliation with the social sciences. (ML)

  15. 48 CFR 2527.7002 - NSF patent policy.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true NSF patent policy. 2527... CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Disposition of Rights in Inventions 2527.7002 NSF patent policy. As authorized by the National Science Board at its 230th meeting, October 15-16, 1981, the...

  16. Cyberinfrastructure for the NSF Ocean Observatories Initiative

    Science.gov (United States)

    Orcutt, J. A.; Vernon, F. L.; Arrott, M.; Chave, A.; Krueger, I.; Schofield, O.; Glenn, S.; Peach, C.; Nayak, A.

    2007-12-01

    The Internet today is vastly different than the Internet that we knew even five years ago and the changes that will be evident five years from now, when the NSF Ocean Observatories Initiative (OOI) prototype has been installed, are nearly unpredictable. Much of this progress is based on the exponential growth in capabilities of consumer electronics and information technology; the reality of this exponential behavior is rarely appreciated. For example, the number of transistors on a square cm of silicon will continue to double every 18 months, the density of disk storage will double every year, and network bandwidth will double every eight months. Today's desktop 2TB RAID will be 64TB and the 10Gbps Regional Scale Network fiber optical connection will be running at 1.8Tbps. The same exponential behavior characterizes the future of genome sequencing. The first two sequences of composites of individuals' genes cost tens of millions of dollars in 2001. Dr. Craig Venter just published a more accurate complete human genome (his own) at a cost on the order of 100,000. The J. Craig Venter Institute has provided support for the X Prize for Genomics offering 10M to the first successful sequencing of a human genome for $1,000. It's anticipated that the prize will be won within five years. Major advances in technology that are broadly viewed as disruptive or revolutionary rather than evolutionary will often depend upon the exploitation of exponential expansions in capability. Applications of these ideas to the OOI will be discussed. Specifically, the agile ability to scale cyberinfrastructure commensurate with the exponential growth of sensors, networks and computational capability and demand will be described.

  17. Dr.Zhang Ren's Experience in Acupuncture Treatment of Obstinate Eye Diseases

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Dr.Zhang Ren (張仁), the board chairman of Shanghai Acupuncture Association, has been engaging in acupuncture treatment for more than 30years, during which he has kept on exploring the acupuncture therapies for obstinate diseases,especially for the obstinate eye diseases, ant summed up rich experience in this aspect. The following is a summary of what the author has learned from Dr. Zhang Ren.

  18. NSF Obligations for Top 200 Institutions by Fiscal Year

    Data.gov (United States)

    National Science Foundation — An text/xml file containing FY 2001 through FY 2015 National Science Foundation (NSF) obligations by institution for the top 200 recipients defined in terms of total...

  19. The NSF and the geosciences community: Rotating program officers

    Science.gov (United States)

    Batiza, Rodey; Rea, David K.; Rumble, Douglas, III

    The National Science Foundation (NSF) is a federal agency charged with the care and feeding of basic scientific research in U.S. colleges and universities. NSF is a major contributor toward the support of research in Earth, ocean, and atmospheric sciences, disciplines of great importance to AGU members.NSF makes a regular practice of employing scientists from universities, nonprofit research organizations, industry, and state or local governments as temporary program officers (“rotators”) with terms of service from 1 to 2 years. There are several reasons for the use of rotators: It brings to NSF people who have firsthand, recent knowledge of "what it is really like" beyond the Washington, D.C. beltway. Knowledge of new ideas, recent graduates, and a fresh look at the system are worth considerably more than the problems that arise owing to inexperienced program officers.It sheds some sunshine on internal NSF procedures when the rotator returns with his tales to his home institution.It provides NSF management with considerable flexibility in coping with changing staff requirements.

  20. Effect of LongZhang Gargle on Biofilm Formation and Acidogenicity of Streptococcus mutans In Vitro

    Directory of Open Access Journals (Sweden)

    Yutao Yang

    2016-01-01

    Full Text Available Streptococcus mutans, with the ability of high-rate acid production and strong biofilm formation, is considered the predominant bacterial species in the pathogenesis of human dental caries. Natural products which may be bioactive against S. mutans have become a hot spot to researches to control dental caries. LongZhang Gargle, completely made from Chinese herbs, was investigated for its effects on acid production and biofilm formation by S. mutans in this study. The results showed an antimicrobial activity of LongZhang Gargle against S. mutans planktonic growth at the minimum inhibitory concentration (MIC of 16% and minimum bactericidal concentration (MBC of 32%. Acid production was significantly inhibited at sub-MIC concentrations. Biofilm formation was also significantly disrupted, and 8% was the minimum concentration that resulted in at least 50% inhibition of biofilm formation (MBIC50. A scanning electron microscopy (SEM showed an effective disruption of LongZhang Gargle on S. mutans biofilm integrity. In addition, a confocal laser scanning microscopy (CLSM suggested that the extracellular polysaccharides (EPS synthesis could be inhibited by LongZhang Gargle at a relatively low concentration. These findings suggest that LongZhang Gargle may be a promising natural anticariogenic agent in that it suppresses planktonic growth, acid production, and biofilm formation against S. mutans.

  1. Integrative Genomic and Proteomic Analysis of the Response of Lactobacillus casei Zhang to Glucose Restriction.

    Science.gov (United States)

    Yu, Jie; Hui, Wenyan; Cao, Chenxia; Pan, Lin; Zhang, Heping; Zhang, Wenyi

    2018-03-02

    Nutrient starvation is an important survival challenge for bacteria during industrial production of functional foods. As next-generation sequencing technology has greatly advanced, we performed proteomic and genomic analysis to investigate the response of Lactobacillus casei Zhang to a glucose-restricted environment. L. casei Zhang strains were permitted to evolve in glucose-restricted or normal medium from a common ancestor over a 3 year period, and they were sampled at 1000, 2000, 3000, 4000, 5000, 6000, 7000, and 8000 generations and subjected to proteomic and genomic analyses. Genomic resequencing data revealed different point mutations and other mutational events in each selected generation of L. casei Zhang under glucose restriction stress. The differentially expressed proteins induced by glucose restriction were mostly related to fructose and mannose metabolism, carbohydrate metabolic processes, lyase activity, and amino-acid-transporting ATPase activity. Integrative proteomic and genomic analysis revealed that the mutations protected L. casei Zhang against glucose starvation by regulating other cellular carbohydrate, fatty acid, and amino acid catabolism; phosphoenolpyruvate system pathway activation; glycogen synthesis; ATP consumption; pyruvate metabolism; and general stress-response protein expression. The results help reveal the mechanisms of adapting to glucose starvation and provide new strategies for enhancing the industrial utility of L. casei Zhang.

  2. Congressional hearing reviews NSF major research and facilities projects

    Science.gov (United States)

    Showstack, Randy

    2012-03-01

    An 8 March congressional hearing about the U.S. National Science Foundation's Major Research Equipment and Facilities Construction (NSF MREFC) account focused on fiscal management and accountability of projects in that account and reviewed concerns raised by NSF's Office of Inspector General (OIG). NSF established the MREFC account in 1995 to better plan and manage investments in major equipment and facilities projects, which can cost from tens of millions to hundreds of millions of dollars, and the foundation has funded 17 MREFC projects since then. The Obama administration's proposed fiscal year (FY) 2013 budget includes funding for four MREFC projects: Advanced Laser Gravitational-Wave Observatory (AdvLIGO), Advanced Technology Solar Telescope (ATST), National Ecological Observatory (NEON), and Ocean Observatories Initiative (OOI). The hearing, held by a subcommittee of the House of Representatives' Committee on Science, Space, and Technology, reviewed management oversight throughout the life cycles of MREFC projects and concerns raised in recent OIG reports about the use of budget contingency funds. NSF's February 2012 manual called "Risk management guide for large facilities" states that cost contingency is "that portion of the project budget required to cover `known unknowns,'" such as planning and estimating errors and omissions, minor labor or material price fluctuations, and design developments and changes within the project scope. Committee members acknowledged measures that NSF has made to improve the MREFC oversight process, but they also urged the agency to continue to take steps to ensure better project management.

  3. Optimization of Passive Coherent Receiver System Placement

    Science.gov (United States)

    2013-09-01

    spheroid object with a constant radar cross section (RCS). Additionally, the receiver and transmitters are assumed to be notional isotropic antennae...software- defined radio for equatorial plasma instability studies,” Radio Science, vol. 48, pp. 1–11. Aug. 2013. [2] P. C. Zhang and B. Y. Li, “Passive

  4. Proof and Pedagogy in Ancient China: Examples from Liu Hui's Commentary on "JIU ZHANG SUAN SHU".

    Science.gov (United States)

    Siu, Man-Keung

    1993-01-01

    Illustrates the pedagogical implications embodied in Liu Hui's discussion on the ancient Chinese mathematical classic "JIU ZHANG SUAN SHU" (Nine Chapters on the Mathematical Art) with respect to aspects of proof and, more generally, the role of proof in mathematics. Provides examples involving area and volume. (Contains 25 references.)…

  5. Period of Light Variability in BL Lac ON 231 Xu Yun Bing1, Zhang ...

    Indian Academy of Sciences (India)

    period light variability may be greater than the current observation history and needs further monitoring certification (Zhang et al. 1998). To establish the real periods of ON 231, we employ wavelet analysis and DCF method to search a periodicity in the light curves. 2. Periodicity analysis of ON231. 2.1 Light curve of ON 231.

  6. Fermentation characteristics and transit tolerance of probiotic Lactobacillus casei Zhang in soymilk and bovine milk during storage.

    Science.gov (United States)

    Wang, J; Guo, Z; Zhang, Q; Yan, L; Chen, W; Liu, X-M; Zhang, H-P

    2009-06-01

    Lactobacillus casei Zhang is a novel strain that was screened out of koumiss collected in Inner Mongolia, and our previous research showed that L. casei Zhang has health benefits such as cholesterol-reducing and immunomodulating effects. The fermentation characteristics of L. casei Zhang in soymilk and bovine milk and the transit tolerance of L. casei Zhang in fermented milk products during refrigerated storage for 28 d were assessed. A faster decrease in pH and faster growth of L. casei Zhang during fermentation were observed in soymilk compared with bovine milk at various inoculation rates, probably because of the low pH buffering capacity of soymilk. The fermented bovine milk samples had much higher final titratable acidity (TA) values (between 0.80 and 0.93%) than the soymilk samples (between 0.40 and 0.46%). Dramatic increases in TA values in the fermented soymilk samples during storage were observed, and the TA values of the fermented soymilk samples changed from survival rates of freshly prepared cultures of L. casei Zhang in simulated gastric juice at pH 2.0 and 2.5 were 31 and 69%, respectively, and the delivery of L. casei Zhang through fermented soymilk and bovine milk significantly improved the viability of L. casei Zhang in simulated gastric transit. Lactobacillus casei Zhang showed good tolerance to simulated gastric juice and intestinal juice in the fermented soymilk and bovine milk samples, and maintained high viability (>10(8) cfu/g) during storage at 4 degrees C for 28 d. Our results indicated that both soymilk and bovine milk could serve as vehicles for delivery of probiotic L. casei Zhang, and further research is needed to elucidate the mechanism of the change in pH and TA of L. casei Zhang in fermented milk samples during fermentation and storage and to understand the difference between soy- and milk-based systems.

  7. Hiina tänapäeva arhitektuur - karmiilmeline, aga põnev / Zhang Ke, Zhang Hong, Xiaodu Liu ; interv. Hanna Läkk ja Ene Läkk

    Index Scriptorium Estoniae

    Zhang Ke

    2006-01-01

    Intervjuu Hiina arhitektuuribüroo Standardarchitecture arhitektide Zhang Ke ja Zhang Hongiga ning arhitektuuribüroo Urbanus arhitekti Xiaodu Liuga Hollandis Hiina tänapäeva tutvustaval näitusel. Hiina arhitektide haridusest, oma arhitektuuribüroode töödest, tänapäeva hiina arhitektuurist, põhiprobleemidest

  8. Nephrogenic systemic fibrosis (NSF) and gadolinium-based contrast ...

    African Journals Online (AJOL)

    Nephrogenic systemic fibrosis (NSF), unknown before March 1997 and first described in 2000, is a systemic disorder characterised by widespread tissue fibrosis. The first known case occurred in 1997, after the use of gadolinium-based contrast agents (GBCAs) at high doses in patients with renal failure had become routine.

  9. The design of a switchyard for the NSF isotope separator

    International Nuclear Information System (INIS)

    Malcolm, I.C.; Grant, I.S.

    1982-01-01

    In examining design requirements for the optics of the NSF isotope separator, first-order considerations, voltage requirements, second-order considerations, and shim coil design are discussed. The results are given of a computer study of the system comprising of quadrupole triplet, magnetic and electrostatic sectors. The effects of the accuracy in the fabrication of the electrostatic sector are considered. (U.K.)

  10. NSF-Sponsored Biological and Chemical Oceanography Data Management Office

    Science.gov (United States)

    Allison, M. D.; Chandler, C. L.; Copley, N.; Galvarino, C.; Gegg, S. R.; Glover, D. M.; Groman, R. C.; Wiebe, P. H.; Work, T. T.; Biological; Chemical Oceanography Data Management Office

    2010-12-01

    Ocean biogeochemistry and marine ecosystem research projects are inherently interdisciplinary and benefit from improved access to well-documented data. Improved data sharing practices are important to the continued exploration of research themes that are a central focus of the ocean science community and are essential to interdisciplinary and international collaborations that address complex, global research themes. In 2006, the National Science Foundation Division of Ocean Sciences (NSF OCE) funded the Biological and Chemical Oceanography Data Management Office (BCO-DMO) to serve the data management requirements of scientific investigators funded by the National Science Foundation’s Biological and Chemical Oceanography Sections. BCO-DMO staff members work with investigators to manage marine biogeochemical, ecological, and oceanographic data and information developed in the course of scientific research. These valuable data sets are documented, stored, disseminated, and protected over short and intermediate time frames. One of the goals of the BCO-DMO is to facilitate regional, national, and international data and information exchange through improved data discovery, access, display, downloading, and interoperability. In May 2010, NSF released a statement to the effect that in October 2010, it is planning to require that all proposals include a data management plan in the form of a two-page supplementary document. The data management plan would be an element of the merit review process. NSF has long been committed to making data from NSF-funded research publicly available and the new policy will strengthen this commitment. BCO-DMO is poised to assist in creating the data management plans and in ultimately serving the data and information resulting from NSF OCE funded research. We will present an overview of the data management system capabilities including: geospatial and text-based data discovery and access systems; recent enhancements to data search tools; data

  11. Robustness analysis of the Zhang neural network for online time-varying quadratic optimization

    International Nuclear Information System (INIS)

    Zhang Yunong; Ruan Gongqin; Li Kene; Yang Yiwen

    2010-01-01

    A general type of recurrent neural network (termed as Zhang neural network, ZNN) has recently been proposed by Zhang et al for the online solution of time-varying quadratic-minimization (QM) and quadratic-programming (QP) problems. Global exponential convergence of the ZNN could be achieved theoretically in an ideal error-free situation. In this paper, with the normal differentiation and dynamics-implementation errors considered, the robustness properties of the ZNN model are investigated for solving these time-varying problems. In addition, linear activation functions and power-sigmoid activation functions could be applied to such a perturbed ZNN model. Both theoretical-analysis and computer-simulation results demonstrate the good ZNN robustness and superior performance for online time-varying QM and QP problem solving, especially when using power-sigmoid activation functions.

  12. A note on Wang et al's attack on Zhang et al's multiparty quantum secret sharing

    International Nuclear Information System (INIS)

    Gao Gan

    2012-01-01

    Recently, Wang et al (2008 Phys. Lett. A 373 65) proposed an attack on Zhang et al's (2007 Opt. Commun. 269 418) multiparty quantum secret sharing scheme, in which the first and the last agent are reported to be able to cooperatively eavesdrop on all the secret messages without being detected. In this paper, we show that in Wang et al's attack, on average no more than half the secret messages can be eavesdropped. (paper)

  13. Capturing Parent-Child Interactions With Social Media: Comment on Zhang et al. (2015).

    Science.gov (United States)

    Leung, Ricky; Dong, Guanghui; Qin, Xiaoxia; Lin, Shao

    2016-06-01

    Zhang et al. conducted a qualitative study of children presented with 19 parental structuring behaviors of parental control and were asked to attribute the parent's intent behind the behaviors. The authors developed several conceptual categories, "parent-centered," "child-centered," or "social" interests. Here, we describe how their 12 propositions could be empirically tested in further studies using social media. © The Author(s) 2016.

  14. Many particle approximation of the Aw-Rascle-Zhang second order model for vehicular traffic.

    Science.gov (United States)

    Francesco, Marco Di; Fagioli, Simone; Rosini, Massimiliano D

    2017-02-01

    We consider the follow-the-leader approximation of the Aw-Rascle-Zhang (ARZ) model for traffic flow in a multi population formulation. We prove rigorous convergence to weak solutions of the ARZ system in the many particle limit in presence of vacuum. The result is based on uniform BV estimates on the discrete particle velocity. We complement our result with numerical simulations of the particle method compared with some exact solutions to the Riemann problem of the ARZ system.

  15. 21st Century Kinematics : The 2012 NSF Workshop

    CERN Document Server

    2013-01-01

    21st Century Kinematics focuses on algebraic problems in the analysis and synthesis of mechanisms and robots, compliant mechanisms, cable-driven systems and protein kinematics. The specialist contributors provide the background for a series of presentations at the 2012 NSF Workshop. The text shows how the analysis and design of innovative mechanical systems yield increasingly complex systems of polynomials, characteristic of those systems. In doing so, takes advantage of increasingly sophisticated computational tools developed for numerical algebraic geometry and demonstrates the now routine derivation of polynomial systems dwarfing the landmark problems of even the recent past. The 21st Century Kinematics workshop echoes the NSF-supported 1963 Yale Mechanisms Teachers Conference that taught a generation of university educators the fundamental principles of kinematic theory. As such these proceedings will be provide admirable supporting theory for a graduate course in modern kinematics and should be of consid...

  16. NSF's Perspective on Space Weather Research for Building Forecasting Capabilities

    Science.gov (United States)

    Bisi, M. M.; Pulkkinen, A. A.; Bisi, M. M.; Pulkkinen, A. A.; Webb, D. F.; Oughton, E. J.; Azeem, S. I.

    2017-12-01

    Space weather research at the National Science Foundation (NSF) is focused on scientific discovery and on deepening knowledge of the Sun-Geospace system. The process of maturation of knowledge base is a requirement for the development of improved space weather forecast models and for the accurate assessment of potential mitigation strategies. Progress in space weather forecasting requires advancing in-depth understanding of the underlying physical processes, developing better instrumentation and measurement techniques, and capturing the advancements in understanding in large-scale physics based models that span the entire chain of events from the Sun to the Earth. This presentation will provide an overview of current and planned programs pertaining to space weather research at NSF and discuss the recommendations of the Geospace Section portfolio review panel within the context of space weather forecasting capabilities.

  17. A bandwidth correction to the Allegri-Zhang solution for accelerated random vibration testing

    Directory of Open Access Journals (Sweden)

    Benasciutti Denis

    2018-01-01

    Full Text Available In 2008, Allegri and Zhang published a study [Int. J. Fatigue. 2008, 30(6:967-977] in which they provided an exact analytical solution to the inverse scaling law for accelerated vibration tests of linear systems submitted to stationary Gaussian excitations By combining finite element analysis with multiaxial spectral methods defined in the frequency-domain, their solution generalised the simple inverse power law model suggested in some standards. The solution adopted the “equivalent von Mises stress” multiaxial criterion combined with the narrow-band damage expression. This work aims to propose a bandwidth correction to the original Allegri-Zhang solution to account for the actual spectral banwidth of the local multiaxial stress. The corrected Allegri-Zhang solution is also extended to another multiaxial spectral method, namely the “Projection-by-Projection” criterion. A numerical example is finally discussed, in which the corrected solution is applied to an L-shaped beam submitted to random accelerations.

  18. Adaptation of Lactobacillus casei Zhang to Gentamycin Involves an Alkaline Shock Protein

    Directory of Open Access Journals (Sweden)

    Wenyi Zhang

    2017-11-01

    Full Text Available Lactobacillus (L. casei Zhang is a koumiss-originated probiotic strain, which was used as a model in a long-term antibiotics-driven evolution experiment to reveal bacterial evolutionary dynamics; and we isolated gentamycin-resistant L. casei Zhang descendents. To decipher the gentamycin resistance mechanism, here we cultivated the parental L. casei Zhang and its descendent cells in an antibiotics-containing environment to compare their global protein expression profiles using the iTRAQ-based proteomic approach. A total of 72 proteins were significantly up-regulated (>2.0-fold, P < 0.05, whilst 32 proteins were significantly down-regulated <−2.0-fold, P < 0.05 in the descendent line. The gentamycin-resistant descendent line showed elevated expression in some carbohydrates, amino acids, and purine metabolic pathways. Several stress-related proteins were also differentially expressed. Among them, one alkaline shock protein, asp23, was up-regulated most in the gentamycin-resistant strain (21.9-fold increase compared with the parental strain. The asp23 gene disruption mutant was significantly more sensitive to gentamycin compared with the wild type, suggesting an important role of this gene in developing the gentamycin-resistant phenotype in L. casei. Our report has described the adaptation of a probiotic strain that has acquired antibiotics resistance through long-term antibiotics exposure at the proteome level, and we revealed a novel mechanism of gentamycin resistance.

  19. Extracellular Gd-CA: Differences in prevalence of NSF

    International Nuclear Information System (INIS)

    Thomsen, Henrik S.; Marckmann, Peter

    2008-01-01

    Until recently it was believed that extracellular gadolinium-based contrast agents were safe for both the kidneys and all other organs within the dose range up to 0.3 mmol/kg body weight. However, in 2006, it was demonstrated that some gadolinium-based contrast agents may trig the development of nephrogenic systemic fibrosis, a generalized fibrotic disorder, in renal failure patients. As no prospective studies can be performed we must rely on retrospective data. From those data it is obvious that the prevalence of NSF is significantly higher after the unstable agent gadodiamide than after any other gadolinium-based agent (3-7% versus 0-1% per injection) in patients with reduced renal function. Prevalence after exposure to two gadodiamide injections is as high as 36% in patients with chronic kidney disease (CKD) stage 5. No report of NSF after the most stable agents has been reported in the peer-reviewed literature documenting that there is a difference between the various agents regarding triggering NSF

  20. NSF Lower Atmospheric Observing Facilities (LAOF) in support of science and education

    Science.gov (United States)

    Baeuerle, B.; Rockwell, A.

    2012-12-01

    Researchers, students and teachers who want to understand and describe the Earth System require high quality observations of the atmosphere, ocean, and biosphere. Making these observations requires state-of-the-art instruments and systems, often carried on highly capable research platforms. To support this need of the geosciences community, the National Science Foundation's (NSF) Division of Atmospheric and Geospace Sciences (AGS) provides multi-user national facilities through its Lower Atmospheric Observing Facilities (LAOF) Program at no cost to the investigator. These facilities, which include research aircraft, radars, lidars, and surface and sounding systems, receive NSF financial support and are eligible for deployment funding. The facilities are managed and operated by five LAOF partner organizations: the National Center for Atmospheric Research (NCAR); Colorado State University (CSU); the University of Wyoming (UWY); the Center for Severe Weather Research (CSWR); and the Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS). These observational facilities are available on a competitive basis to all qualified researchers from US universities, requiring the platforms and associated services to carry out various research objectives. The deployment of all facilities is driven by scientific merit, capabilities of a specific facility to carry out the proposed observations, and scheduling for the requested time. The process for considering requests and setting priorities is determined on the basis of the complexity of a field campaign. The poster will describe available observing facilities and associated services, and explain the request process researchers have to follow to secure access to these platforms for scientific as well as educational deployments. NSF/NCAR GV Aircraft

  1. Nonequilibrium steady state of a weakly-driven Kardar–Parisi–Zhang equation

    Science.gov (United States)

    Meerson, Baruch; Sasorov, Pavel V.; Vilenkin, Arkady

    2018-05-01

    We consider an infinite interface of d  >  2 dimensions, governed by the Kardar–Parisi–Zhang (KPZ) equation with a weak Gaussian noise which is delta-correlated in time and has short-range spatial correlations. We study the probability distribution of the interface height H at a point of the substrate, when the interface is initially flat. We show that, in stark contrast with the KPZ equation in d  statistics of directed polymers in random potential.

  2. Security analysis of boolean algebra based on Zhang-Wang digital signature scheme

    International Nuclear Information System (INIS)

    Zheng, Jinbin

    2014-01-01

    In 2005, Zhang and Wang proposed an improvement signature scheme without using one-way hash function and message redundancy. In this paper, we show that this scheme exits potential safety concerns through the analysis of boolean algebra, such as bitwise exclusive-or, and point out that mapping is not one to one between assembly instructions and machine code actually by means of the analysis of the result of the assembly program segment, and which possibly causes safety problems unknown to the software

  3. Air pollution in China, with Junfeng (Jim) Zhang by Ashley Ahearn.

    Science.gov (United States)

    Zhang, Junfeng Jim

    2011-06-01

    Air pollution in China, one of the world’s oldest civilizations, reflects a combination of traditional and modern-day factors. Severe air pollution in Chinese cities is the result of rapid industrialization, urbanization, and growth in vehicle use. At the same time, traditional indoor burning of solid fuels such as coal and dung presents acute, severe exposures to pollutants including particulate matter, carbon monoxide, arsenic, and mercury. In this podcast, Junfeng (Jim) Zhang tells host Ashley Ahearn about some of the factors that make air pollution a significant problem in China.

  4. Reply to comment by Ma and Zhang on "Rescaling the complementary relationship for land surface evaporation"

    Science.gov (United States)

    Crago, Richard; Qualls, Russell; Szilagyi, Jozsef; Huntington, Justin

    2017-07-01

    Ma and Zhang (2017) note a concern they have with our rescaled Complementary Relationship (CR) for land surface evaporation when daily average wind speeds are very low (perhaps less than 1 m/s). We discuss conditions and specific formulations that lead to this concern, but ultimately argue that under these conditions, a key assumption behind the CR itself may not be satisfied at the daily time scale. Thus, careful consideration of the reliability of the CR is needed when wind speeds are very low.

  5. Security analysis of boolean algebra based on Zhang-Wang digital signature scheme

    Energy Technology Data Exchange (ETDEWEB)

    Zheng, Jinbin, E-mail: jbzheng518@163.com [School of Mathematics and Computer Science, Long Yan University, Longyan 364012 (China)

    2014-10-06

    In 2005, Zhang and Wang proposed an improvement signature scheme without using one-way hash function and message redundancy. In this paper, we show that this scheme exits potential safety concerns through the analysis of boolean algebra, such as bitwise exclusive-or, and point out that mapping is not one to one between assembly instructions and machine code actually by means of the analysis of the result of the assembly program segment, and which possibly causes safety problems unknown to the software.

  6. 78 FR 59728 - Notice of Permit Applications Received Under the Antarctic Conservation Act of 1978

    Science.gov (United States)

    2013-09-27

    ... requiring special protection. The regulations establish such a permit system to designate Antarctic... NATIONAL SCIENCE FOUNDATION Notice of Permit Applications Received Under the Antarctic... Foundation (NSF) is required to publish a notice of permit applications received to conduct activities...

  7. Short communication: Protection of lyophilized milk starter Lactobacillus casei Zhang by glutathione.

    Science.gov (United States)

    Zhang, Juan; Liu, Qian; Chen, Wei; Du, Guocheng; Chen, Jian

    2016-03-01

    Lyophilization is considered an effective way to preserve the activity of milk starters, such as lactic acid bacteria, in which proper protective agents play key roles. In this study, Lactobacillus casei Zhang, a probiotic bacterium applied as a milk starter in China, was used to investigate the effects of various cryoprotectants according to cell survival rate and physiological characteristics. The result showed a significant survival improvement to 86.6% when glutathione (GSH) was added as an ideal cryoprotectant. Further study revealed that GSH plays a key role on maintaining higher unsaturation ratio of cell membrane and shorter chain length of saturated fatty acids. In this case, the intact cell structure can be obtained. These findings will contribute not only to deepen the understanding of cells during lyophilization but also to improve the industrial performance of certain milk starters such as L. casei Zhang by application of GSH as cryoprotectant. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

  8. Space and Intermediality in Jia Zhang-ke’s Still Life

    Directory of Open Access Journals (Sweden)

    Cecília Mello

    2014-07-01

    Full Text Available This article is dedicated to an analysis of Chinese director Jia Zhang-ke’s film Still Life (San Xia Hao Ren 三峡好人, 2006 from the point of view of its intermedial relationship with Chinese landscape painting. As I will suggest, Jia’s discovery of a real landscape and a vanishing cityscape in this film, shot on location in the region of the Three Gorges of the Yangtze River, springs from a realist impulse and from an original aesthetic response to a new historical and social conjuncture. But while it seems firmly located in the landscape of contemporary China, the film also shares aesthetic qualities with the tradition of Chinese landscape painting, mounted on hanging or hand scrolls. A focus on this particular instance of intermediality leads to a reflection on cinema’s spatial organization in light of current revisions in film and audiovisual theory, which suggest that filmic space and its spectatorial experience should be considered above all from the point of view of touch and movement. It also allows for a broader understanding of the political implications of intermediality in Jia Zhang-ke’s oeuvre, fruit of an organic link between form and content that brings a historical resonance to a contemporary perspective.

  9. NSF-RANN Trace Contaminants Program directory. [Personnel directory

    Energy Technology Data Exchange (ETDEWEB)

    Purnell, P.A.; Smith, S.K.; Wilkes, C.F.

    1976-10-01

    This directory is designed to aid effective communication throughout the National Science Foundation's Trace Contaminants Program, Research Applied to National Needs. The majority of the participants in the Program are represented by name, address, telephone number, and a very brief description of research interest. The directory has five major divisions to facilitate its use. Section I contains a listing of the program managers associated with the NSF-RANN Trace Contaminants Program. Section II lists the principal investigators, co-principal investigators, and coordinators of each of the research grants in the Program. Section III lists the personnel by individual projects. Section IV contains a total alphabetic listing complete with project titles and Section V contains a keyword index. This directory is maintained by the Toxic Materials Information Center as part of the Environmental Resource Center of the Information Center Complex, Information Division, Oak Ridge National Laboratory.

  10. ‘A Special Zone for Confucianism’? Theses of the Academician Zhang Xianglong on Traditional Chinese Culture”

    Directory of Open Access Journals (Sweden)

    Monika GÄNßBAUER

    2014-05-01

    Full Text Available This article introduces the work of the academician Zhang Xianglong (b. 1949, focussing on his idea of establishing a “special zone for Confucianism” in China. Zhang argues that special protection is needed for Confucian traditions which he perceives as the leading culture of China. Confucian culture should find its way out of the museum, says Zhang. He also refers to the political concept of “one country, two systems” that was implemented when Hongkong was restored to Chinese rule. Zhang applies this to his idea of a “special zone for Confucianism”, suggesting that this political concept could be extended to “one country, three systems”. In my view Zhang is developing new, creative ideas for possible experimental fields dealing with Confucianism in the context of the People’s Republic of China. In the end it is my argument that it would be helpful to conduct in-depth research on the possible role of Confucianism in today’s China.

  11. Geoscience Workforce Development at UNAVCO: Leveraging the NSF GAGE Facility

    Science.gov (United States)

    Morris, A. R.; Charlevoix, D. J.; Miller, M.

    2013-12-01

    Global economic development demands that the United States remain competitive in the STEM fields, and developing a forward-looking and well-trained geoscience workforce is imperative. According to the Bureau of Labor Statistics, the geosciences will experience a growth of 19% by 2016. Fifty percent of the current geoscience workforce is within 10-15 years of retirement, and as a result, the U.S. is facing a gap between the supply of prepared geoscientists and the demand for well-trained labor. Barring aggressive intervention, the imbalance in the geoscience workforce will continue to grow, leaving the increased demand unmet. UNAVCO, Inc. is well situated to prepare undergraduate students for placement in geoscience technical positions and advanced graduate study. UNAVCO is a university-governed consortium facilitating research and education in the geosciences and in addition UNAVCO manages the NSF Geodesy Advancing Geosciences and EarthScope (GAGE) facility. The GAGE facility supports many facets of geoscience research including instrumentation and infrastructure, data analysis, cyberinfrastructure, and broader impacts. UNAVCO supports the Research Experiences in the Solid Earth Sciences for Students (RESESS), an NSF-funded multiyear geoscience research internship, community support, and professional development program. The primary goal of the RESESS program is to increase the number of historically underrepresented students entering graduate school in the geosciences. RESESS has met with high success in the first 9 years of the program, as more than 75% of RESESS alumni are currently in Master's and PhD programs across the U.S. Building upon the successes of RESESS, UNAVCO is launching a comprehensive workforce development program that will network underrepresented groups in the geosciences to research and opportunities throughout the geosciences. This presentation will focus on the successes of the RESESS program and plans to expand on this success with broader

  12. Update on the NSF PAARE Program at SC State

    Science.gov (United States)

    Walter, Donald K.; Ajello, Marco; Brittain, Sean D.; Cash, Jennifer; Hartmann, Dieter; Ho, Shirley; Howell, Steve B.; King, Jeremy R.; Leising, Mark D.; Smith, Daniel M.

    2017-01-01

    We report on results from our NSF PAARE program during Year 2 of the project. Our partnership under this PAARE award includes South Carolina State University (a Historically Black College/University), Clemson University (a Ph.D. granting institution) as well as individual investigators at NASA Ames and Carnegie Mellon University. Our recent work on variable and peculiar stars, work with the Kepler Observatory and our educational products in cosmology for non-STEM majors will be presented. We have successfully piloted sharing our teaching resources by offering an upper-level astrophysics course taught at Clemson via video conferencing , allowing a graduating senior from SC State to take a course not available through his home institution. Additionally, we are working on a memorandum of agreement between the two institutions that will allow for the seamless transfer of an undergraduate from SC State to Clemson’s graduate program in physics and astronomy. Our curriculum work includes new web-based cosmology activities and laboratory experiments. SC State undergraduates are reporting at this conference on their work with the light curves of semiregular variables using Kepler data. Additionally, we are heavily involved in the Citizen CATE Experiment. A PAARE scholarship student from SC State and the PAARE PI traveled to Indonesia for the March 2016 solar eclipse. Their results are also being presented elsewhere at this conference (see Myles McKay’s poster). Support for this work includes our NSF PAARE award AST-1358913 as well as resources and support provided by Clemson University and the National Optical Astronomy Observatory. Additional support has been provided by the South Carolina Space Grant Consortium and from NASA to SC State under awards NNX11AB82G and NNX13AC24G. CATE work has been supported by NASA SMD award NNX16AB92A to the National Solar Observatory. Additional details can be found at: http://physics.scsu.edu

  13. Demonstration of differential quantitative requirements for NSF among multiple vesicle fusion pathways of GLUT4 using a dominant-negative ATPase-deficient NSF

    International Nuclear Information System (INIS)

    Chen Xiaoli; Matsumoto, Hideko; Hinck, Cynthia S.; Al-Hasani, Hadi; St-Denis, Jean-Francois; Whiteheart, Sidney W.; Cushman, Samuel W.

    2005-01-01

    In this study, we investigated the relative participation of N-ethylmaleimide-sensitive factor (NSF) in vivo in a complex multistep vesicle trafficking system, the translocation response of GLUT4 to insulin in rat adipose cells. Transfections of rat adipose cells demonstrate that over-expression of wild-type NSF has no effect on total, or basal and insulin-stimulated cell-surface expression of HA-tagged GLUT4. In contrast, a dominant-negative NSF (NSF-D1EQ) can be expressed at a low enough level that it has little effect on total HA-GLUT4, but does reduce both basal and insulin-stimulated cell-surface HA-GLUT4 by ∼50% without affecting the GLUT4 fold-translocation response to insulin. However, high expression levels of NSF-D1EQ decrease total HA-GLUT4. The inhibitory effect of NSF-D1EQ on cell-surface HA-GLUT4 is reversed when endocytosis is inhibited by co-expression of a dominant-negative dynamin (dynamin-K44A). Moreover, NSF-D1EQ does not affect cell-surface levels of constitutively recycling GLUT1 and TfR, suggesting a predominant effect of low-level NSF-D1EQ on the trafficking of GLUT4 from the endocytic recycling compared to the intracellular GLUT4-specific compartment. Thus, our data demonstrate that the multiple fusion steps in GLUT4 trafficking have differential quantitative requirements for NSF activity. This indicates that the rates of plasma and intracellular membrane fusion reactions vary, leading to differential needs for the turnover of the SNARE proteins

  14. Generalized One-Band Model Based on Zhang-Rice Singlets for Tetragonal CuO

    Science.gov (United States)

    Hamad, I. J.; Manuel, L. O.; Aligia, A. A.

    2018-04-01

    Tetragonal CuO (T-CuO) has attracted attention because of its structure similar to that of the cuprates. It has been recently proposed as a compound whose study can give an end to the long debate about the proper microscopic modeling for cuprates. In this work, we rigorously derive an effective one-band generalized t -J model for T-CuO, based on orthogonalized Zhang-Rice singlets, and make an estimative calculation of its parameters, based on previous ab initio calculations. By means of the self-consistent Born approximation, we then evaluate the spectral function and the quasiparticle dispersion for a single hole doped in antiferromagnetically ordered half filled T-CuO. Our predictions show very good agreement with angle-resolved photoemission spectra and with theoretical multiband results. We conclude that a generalized t -J model remains the minimal Hamiltonian for a correct description of single-hole dynamics in cuprates.

  15. Books Received

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education. Books Received. Articles in Resonance – Journal of Science Education. Volume 1 Issue 1 January 1996 pp 118-118 Books Received. Books Received · More Details Fulltext PDF. Volume 1 Issue 2 February 1996 pp 120-120 Books Received. Books Received.

  16. Building A Drought Science Learning Community: Education and Engagement in an NSF CAREER Grant

    Science.gov (United States)

    Quiring, S. M.

    2011-12-01

    This paper describes the education and engagement plan of the NSF CAREER award that I received in 2011 (Role of Soil Moisture in Seasonal to Interannual Climate Variability in the U.S. Great Plains; NSF Award #1056796). A key component of this plan is the development of a Drought Science Learning Community. A learning community is a program of courses and activities, which may include social and academic activities outside the classroom, that form a single program of instruction. Learning communities serve to increase faculty-student and student-student interaction, improve active and collaborative learning, and develop curricular coherence. The goal of a learning community is to encourage integration of learning across courses and to involve students with one of the grand challenges facing society. Students will be recruited from a Freshman Year Seminar (FYS) that I teach every Fall. Students who belong to the learning community will participate in the Water Management and Hydrological Sciences Seminar Series, relevant field trips, and monthly brown bag lunch meetings where students and faculty will discuss their current research projects and recently published scientific articles. Students who participate in learning community activities will benefit from a common intellectual experience that will help them to develop linkages between courses, regular interactions with faculty mentors, and the opportunity to contribute to faculty research. All students will be encouraged to complete an undergraduate thesis as the capstone experience of their participation in the learning community. In addition to describing the organization of the education and engagement plan, I will also discuss expected outcomes, best practices and lessons learned.

  17. NRAO Response to NSF Senior Review of Astronomy Facilities

    Science.gov (United States)

    2006-11-01

    The National Science Foundation's (NSF) Astronomy Senior Review Committee report (pdf file), released today, made major recommendations for restructuring the NSF's ground-based astronomy efforts, including significant changes for the National Radio Astronomy Observatory (NRAO). The committee's report urged that leadership in radio astronomy, including millimeter- and submillimeter-wave observatories, "remain centered at NRAO as it is, by far, the largest radio astronomy organization in the world." The report praised the record of management of NRAO and the scientific capabilities of the Atacama Large Millimeter/submillimeter Array (ALMA), the Expanded Very Large Array (EVLA), the Robert C. Byrd Green Bank Telescope (GBT), and the Very Long Baseline Array (VLBA). However, the report also recommended that some reductions and changes occur at the NRAO by 2011. Specifically, the report recommended that: (a) VLBA operations make a transition to a significant reliance on international funding or risk closure; (b) GBT operations costs be reduced; and (c) NRAO scientific staff costs be reduced. "The Senior Review Committee had the very difficult task of reconciling the needs of current facilities and funding new facilities for the future of astronomy. We appreciate their efforts and look forward to working with the NSF to ensure that the valuable and unique research capabilities of our NRAO telescopes continue to serve the astronomical community," said Dr. Fred K.Y. Lo, NRAO Director. The VLBA provides the greatest angular resolution, or ability to see fine detail, of any telescope in the world, greatly exceeding the capabilities of the Hubble Space Telescope and the future Square Kilometre Array. The committee recognized that, "if the VLBA is closed, a unique capability would likely be lost for decades." "The VLBA is used by scientists from around the world because of its unique capabilities. It has produced landmark research milestones and the committee recognized in its

  18. Measurements on the NSF injector and analysing magnets

    International Nuclear Information System (INIS)

    Armitage, S.A.; Barker, D.; Eastham, D.A.; Kivlin, F.J.; Tait, N.R.S.

    1979-08-01

    Two 90 0 uniform field magnets are to be installed in the Nuclear Structure Facility (NSF). Their purpose and design are summarized. The effects of various field errors on the performance of a 90 0 double focusing magnet were investigated using a beam optics programme. The results were used to draw up the specification for the magnets. Subsequent checks were made on the angles β of the effective field boundaries with and without the field clamps in place and of the uniformity of the field along the beam orbit in the orbit plane. Checks were also made on radial uniformity in the orbit plane. In order to ensure reliability of calibration of the magnetic field in terms of the field at the NMR probe, reproducibility of field distributions for various excitation cycles was studied. Finally the performance of the magnets was checked directly using high quality α-sources located at the object point, detecting the image at the image point using a position sensitive surface barrier detector. The results of studies on the inflector magnet have been published. (author)

  19. 45 CFR 689.5 - Initial NSF handling of misconduct matters.

    Science.gov (United States)

    2010-10-01

    ... regulation. (c) If OIG determines that alleged research misconduct involves potential civil or criminal... FOUNDATION RESEARCH MISCONDUCT § 689.5 Initial NSF handling of misconduct matters. (a) NSF staff who learn of... awardee institution of the alleged research misconduct and encourage it to undertake an inquiry; (2) Defer...

  20. 78 FR 69839 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2013-11-21

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy...

  1. 75 FR 57463 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2010-09-21

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  2. 77 FR 4027 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2012-01-26

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  3. 76 FR 41234 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-07-13

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  4. 76 FR 19986 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-04-11

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... FURTHER INFORMATION CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S...

  5. 75 FR 63450 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2010-10-15

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86... 20852. FOR FURTHER INFORMATION CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory...

  6. 76 FR 8358 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-02-14

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  7. 45 CFR 680.11 - Staff involvement with NSF proposals and awards.

    Science.gov (United States)

    2010-10-01

    ... teaching careers to spend a year or two at NSF and then return to research and teaching, usually at the... SCIENCE FOUNDATION NATIONAL SCIENCE FOUNDATION RULES OF PRACTICE AND STATUTORY CONFLICT-OF-INTEREST EXEMPTIONS Rules of Practice for the National Science Foundation § 680.11 Staff involvement with NSF...

  8. ZHANG Ting-dong (张亭栋)—— A Pioneer in Treating Leukemia with Arsenous Acid

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Prof. ZHANG Ting-dong, male, was born in Wuqiao County, He-bei Province on Nov. 8,1932, and in 1950 graduated from Harbin Medical University. And from 1960 to 1963 he studied in and then graduated from Western Doctors'class for Learning Traditional Chinese Medicine(TCM).

  9. Review of the genus Neotetricodes Zhang et Chen (Hemiptera: Fulgoromorpha: Issidae) with description of two new species.

    Science.gov (United States)

    Chang, Zhi-Min; Yang, Lin; Zhang, Zheng-Guang; Chen, Xiang-Sheng

    2015-12-11

    Two new species of the issid genus Neotetricodes Zhang et Chen (Hemiptera: Fulgoromorpha: Issidae): Neotetricodes longispinus Chang et Chen sp. nov. (China: Yunnan) and Neotetricodes xiphoideus Chang et Chen sp. nov. (China: Yunnan) are described and illustrated. The generic characteristic is redefined. A checklist and key to the species of the genus are provided. The female genitalia of the genus are firstly described.

  10. Lactobacillus casei Zhang and vitamin K2 prevent intestinal tumorigenesis in mice via adiponectin-elevated different signaling pathways.

    Science.gov (United States)

    Zhang, Yong; Ma, Chen; Zhao, Jie; Xu, Haiyan; Hou, Qiangchuan; Zhang, Heping

    2017-04-11

    The incidence of colon cancer has increased considerably and the intestinal microbiota participate in the development of colon cancer. We showed that the L. casei Zhang or vitamin K2 (Menaquinone-7) intervention significantly alleviated intestinal tumor burden in mice. This was associated with increased serum adiponectin levels in both treatments. But osteocalcin level was only increased by L. casei Zhang. Furthermore, the anti-carcinogenic actions of L. casei Zhang were mediated by hepatic Chloride channel-3(CLCN3)/Nuclear Factor Kappa B(NF-κB) and intestinal Claudin15/Chloride intracellular channel 4(CLIC4)/Transforming Growth Factor Beta(TGF-β) signaling, while the vitamin K2 effect involved a hepatic Vitamin D Receptor(VDR)-phosphorylated AMPK signaling pathway. Fecal DNA sequencing by the Pacbio RSII method revealed there was significantly lower Helicobacter apodemus, Helicobacter mesocricetorum, Allobaculum stercoricanis and Adlercreutzia equolifaciens following both interventions compared to the model group. Moreover, different caecum acetic acid and butyric acid levels and enrichment of other specific microbes also determined the activity of the different regulatory pathways. Together these data show that L. casei Zhang and Vitamin K2 can suppress gut risk microbes and promote beneficial microbial metabolites to reduce colonic tumor development in mice.

  11. Thinning Zhang-Suen dan Stentiford untuk Menentukan Ekstraksi Ciri (Minutiae Sebagai Identifikasi Pola Sidik Jari

    Directory of Open Access Journals (Sweden)

    Faiza Alif Fakhrina

    2016-11-01

    Full Text Available Fingerprint is the skin on the palms of the hands and feet that are covered with small ridge lines. Fingerprint pattern belonging to every human is being unique. There are fingerprint on the ridge pattern will not change during human life. Ridge pattern is characteristic of the fingrprint that can be used for biometric identification. Based on fingerprint ridge pattern into four, namely whorl, ulnar loop, radial loop, and arch. Minutiae Extraction (Crossing Number, Core and Delta, Center Point Location can be used for fingerprint pattern recognition. Some of the methods used in the fingerprint pattern recognition is Minutiae Extraction, and Thinning Zhang-Suen and Stentiford. Croosing Number is used for process Minutiae Extraction, example termination and bifurcation. The classification method used Linear Discriminant Analysis. The result fingerprint pattern recognition is system can recognize fingerprint patter as much as 20 images and system can not recognize fingerprint pattern as much as 10 images. Accuracy of fingerprint pattern recognition is 66%.

  12. Book Review ~ Advancing Online Learning in Asia. Editors: David Murphy, Namin Shin, and Weiyuan Zhang

    Directory of Open Access Journals (Sweden)

    Insung Jung

    2004-08-01

    Full Text Available The Internet, high-speed electronic communications, and computers have transformed the way we teach and learn. With the development of these new information and communication technologies, the idea of online education has been adopted in many developed, and more recently in developing countries, to bring wider opportunities to people in the form of increased access to flexible and interactive, open and distance learning systems. As stated in the Introduction of “Advancing Online Learning in Asia” edited by Murphy, Shin, and Zhang, online education is now everywhere and it “is changing the ways in which educational institutions interact with their students, for both traditional and distance education universities.” By examining recent developments of online education in Asia from multiple perspectives, this book has a potential to be an invaluable resource to educators. Taking cases from the Asian region in which online learning was introduced, implemented, and experienced, this book presents the cases from a number of perspectives, especially from student perspectives, and addresses pedagogical and technical issues faced by online educators. The breadth of the articles in this book provides a wide range of online learning cases and varied perspectives, which should clearly appeal to educators, researchers, administrators, and policy makers in online education.

  13. Recent developments on the Kardar-Parisi-Zhang surface-growth equation.

    Science.gov (United States)

    Wio, Horacio S; Escudero, Carlos; Revelli, Jorge A; Deza, Roberto R; de la Lama, Marta S

    2011-01-28

    The stochastic nonlinear partial differential equation known as the Kardar-Parisi-Zhang (KPZ) equation is a highly successful phenomenological mesoscopic model of surface and interface growth processes. Its suitability for analytical work, its explicit symmetries and its prediction of an exact dynamic scaling relation for a one-dimensional substratum led people to adopt it as a 'standard' model in the field during the last quarter of a century. At the same time, several conjectures deserving closer scrutiny were established as dogmas throughout the community. Among these, we find the beliefs that 'genuine' non-equilibrium processes are non-variational in essence, and that the exactness of the dynamic scaling relation owes its existence to a Galilean symmetry. Additionally, the equivalence among planar and radial interface profiles has been generally assumed in the literature throughout the years. Here--among other topics--we introduce a variational formulation of the KPZ equation, remark on the importance of consistency in discretization and challenge the mainstream view on the necessity for scaling of both Galilean symmetry and the one-dimensional fluctuation-dissipation theorem. We also derive the KPZ equation on a growing domain as a first approximation to radial growth, and outline the differences with respect to the classical case that arises in this new situation.

  14. Height distribution tails in the Kardar-Parisi-Zhang equation with Brownian initial conditions

    Science.gov (United States)

    Meerson, Baruch; Schmidt, Johannes

    2017-10-01

    For stationary interface growth, governed by the Kardar-Parisi-Zhang (KPZ) equation in 1 + 1 dimensions, typical fluctuations of the interface height at long times are described by the Baik-Rains distribution. Recently Chhita et al (2016 arXiv:1611.06690) used the totally asymmetric simple exclusion process (TASEP) to study the height fluctuations in systems of the KPZ universality class for Brownian interfaces with arbitrary diffusion constant. They showed that there is a one-parameter family of long-time distributions, parameterized by the diffusion constant of the initial random height profile. They also computed these distributions numerically by using Monte Carlo (MC) simulations. Here we address this problem analytically and focus on the distribution tails at short times. We determine the (stretched exponential) tails of the height distribution by applying the optimal fluctuation method (OFM) to the KPZ equation. We argue that, by analogy with other initial conditions, the ‘slow’ tail holds at arbitrary times and therefore provides a proper asymptotic to the family of long-time distributions studied in Chhita et al (2016 arXiv:1611.06690). We verify this hypothesis by performing large-scale MC simulations of a TASEP with a parallel-update rule. The ‘fast’ tail, predicted by the OFM, is also expected to hold at arbitrary times, at sufficiently large heights.

  15. A New Probiotic Cheddar Cheese with High ACE-Inhibitory Activity and γ-Aminobutyric Acid Content Produced with Koumiss-Derived Lactobacillus casei Zhang

    Directory of Open Access Journals (Sweden)

    Hai Kuan Wang

    2010-01-01

    Full Text Available Cheddar cheese has been manufactured with Lactobacillus casei Zhang as the dairy starter adjunct. L. casei Zhang had previously been isolated from koumiss collected from Xilin Guole in Inner Mongolia and characterized in detail with regard to their probiotic potential. The addition of L. casei Zhang to Cheddar cheese had no adverse effects on sensory criteria. The cheese made with 0.1, 1 and 2 % of the probiotic strain L. casei Zhang adjuncts contained high levels of the Lactobacillus after 6 months of ripening with final counts of 9.6·10^7, 7.7·10^7 and 1.02·10^8 CFU/g, respectively. In the ripe control cheese, without the addition of probiotic strain L. casei Zhang, the number of Lactobacillus reached 5.7·107 CFU/g. Enterobacterial repetitive intergenic consensus PCR (ERIC-PCR analysis was used to distinguish the added L. casei Zhang from the natural flora of the cheese and to determine whether L. casei Zhang grew in the cheese. ACE-inhibitory activity and γ-aminobutyric acid (GABA concentrations in the cheese were measured. Compared with control cheese, experimental cheese with 0.1, 1 and 2 % of probiotic strain L. casei Zhang revealed some increase in ACE-inhibitory activity and GABA mass fraction. In the present study, the production of both ACE-inhibitory activity and GABA in the probiotic cheese with the L. casei Zhang adjunct isolated from koumiss has been found for the first time. The results suggest that cheese with the probiotic strain L. casei Zhang showed good potential for application in the management of hypertension.

  16. Brokering technologies to realize the hydrology scenario in NSF BCube

    Science.gov (United States)

    Boldrini, Enrico; Easton, Zachary; Fuka, Daniel; Pearlman, Jay; Nativi, Stefano

    2015-04-01

    In the National Science Foundation (NSF) BCube project an international team composed of cyber infrastructure experts, geoscientists, social scientists and educators are working together to explore the use of brokering technologies, initially focusing on four domains: hydrology, oceans, polar, and weather. In the hydrology domain, environmental models are fundamental to understand the behaviour of hydrological systems. A specific model usually requires datasets coming from different disciplines for its initialization (e.g. elevation models from Earth observation, weather data from Atmospheric sciences, etc.). Scientific datasets are usually available on heterogeneous publishing services, such as inventory and access services (e.g. OGC Web Coverage Service, THREDDS Data Server, etc.). Indeed, datasets are published according to different protocols, moreover they usually come in different formats, resolutions, Coordinate Reference Systems (CRSs): in short different grid environments depending on the original data and the publishing service processing capabilities. Scientists can thus be impeded by the burden of discovery, access and normalize the desired datasets to the grid environment required by the model. These technological tasks of course divert scientists from their main, scientific goals. The use of GI-axe brokering framework has been experimented in a hydrology scenario where scientists needed to compare a particular hydrological model with two different input datasets (digital elevation models): - the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) dataset, v.2. - the Shuttle Radar Topography Mission (SRTM) dataset, v.3. These datasets were published by means of Hyrax Server technology, which can provide NetCDF files at their original resolution and CRS. Scientists had their model running on ArcGIS, so the main goal was to import the datasets using the available ArcPy library and have EPSG:4326 with the same resolution grid as the

  17. Maximum of an Airy process plus Brownian motion and memory in Kardar-Parisi-Zhang growth

    Science.gov (United States)

    Le Doussal, Pierre

    2017-12-01

    We obtain several exact results for universal distributions involving the maximum of the Airy2 process minus a parabola and plus a Brownian motion, with applications to the one-dimensional Kardar-Parisi-Zhang (KPZ) stochastic growth universality class. This allows one to obtain (i) the universal limit, for large time separation, of the two-time height correlation for droplet initial conditions, e.g., C∞=limt2/t1→+∞h(t1) h (t2)¯c/h(t1)2¯c, with C∞≈0.623 , as well as conditional moments, which quantify ergodicity breaking in the time evolution; (ii) in the same limit, the distribution of the midpoint position x (t1) of a directed polymer of length t2; and (iii) the height distribution in stationary KPZ with a step. These results are derived from the replica Bethe ansatz for the KPZ continuum equation, with a "decoupling assumption" in the large time limit. They agree and confirm, whenever they can be compared, with (i) our recent tail results for two-time KPZ with the work by de Nardis and Le Doussal [J. Stat. Mech. (2017) 053212, 10.1088/1742-5468/aa6bce], checked in experiments with the work by Takeuchi and co-workers [De Nardis et al., Phys. Rev. Lett. 118, 125701 (2017), 10.1103/PhysRevLett.118.125701] and (ii) a recent result of Maes and Thiery [J. Stat. Phys. 168, 937 (2017), 10.1007/s10955-017-1839-2] on midpoint position.

  18. [The academic characteristics of acupuncture and moxibustion of professor ZHANG Yongshu:a famous acupuncturist in Southern Fujian].

    Science.gov (United States)

    Xu, Weiwei; Meng, Xianjun; Zhu, Anning; Wang, Yu; Luo, Wuyougumo; Kuang, Zifang

    2017-01-12

    Professor ZHANG Yongshu , who studied from professor LIU Zhangjie , is a famous acupuncturist in Quanzhou of Southern Fujian. The publications authored by professor ZHANG Yongshu were collected in this study to summarize his academic characteristics of acupuncture and moxibustion. The result indicated he highly valued the regulation of yang qi , and established the theory of "developing yang to nourish yin ", which proposes to develop yang qi to achieve the effect of culturing yin ; he summarized eight methods to regulate the governor vessel and conception vessel, which can condition the body's yin and yang ; he paid attention to moxibustion therapy and its dosage, and made the best of direct moxibustion. In addition, he focused on meridian theory with effective application of meridian syndrome differentiation; in clinical treatment, he regulated the hand- yangming meridian to treat diseases by nourishing yang , generating yin and regulating fu .

  19. Diversity receiver

    NARCIS (Netherlands)

    2005-01-01

    The invention is directed to the reception of high rate radio signals (for example DVB-T signals) while the receiver is moving at a high speed (for example in or with a car). Two or more antennas (12, 16) are closely spaced and arranged behind each other in the direction of motion (v) for receiving

  20. Using curriculum vitae to compare some impacts of NSF research grants with research center funding

    OpenAIRE

    Monica Gaughan; Barry Bozeman

    2002-01-01

    While traditional grants remain central in US federal support of academic scientists and engineers, the role of multidisciplinary NSF Centers is growing. Little is known about how funding through these Centers affects scientific output or (as is an NSF aim) increases academic collaboration with industry. This paper tests the use of CVs to examine how Center funding affects researchers' publication rates and their obtaining industry grants. Copyright , Beech Tree Publishing.

  1. Volcanic Surface Deformation in Dominica From GPS Geodesy: Results From the 2007 NSF- REU Site

    Science.gov (United States)

    Murphy, R.; James, S.; Styron, R. H.; Turner, H. L.; Ashlock, A.; Cavness, C.; Collier, X.; Fauria, K.; Feinstein, R.; Staisch, L.; Williams, B.; Mattioli, G. S.; Jansma, P. E.; Cothren, J.

    2007-12-01

    GPS measurements have been collected on the island of Dominica in the Lesser Antilles between 2001 and 2007, with five month-long campaigns completed in June of each year supported in part by a NSF REU Site award for the past two years. All GPS data were collected using dual-frequency, code-phase receivers and geodetic-quality antenna, primarily choke rings. Three consecutive 24 hr observation days were normally obtained for each site. Precise station positions were estimated with GIPSY-OASISII using an absolute point positioning strategy and final, precise orbits, clocks, earth orientation parameters, and x-files. All position estimates were updated to ITRF05 and a revised Caribbean Euler pole was used to place our observations in a CAR-fixed frame. Time series were created to determine the velocity of each station. Forward and inverse elastic half-space models with planar (i.e. dike) and Mogi (i.e. point) sources were investigated. Inverse modeling was completed using a downhill simplex method of function minimization. Selected site velocities were used to create appropriate models for specific regions of Dominica, which correspond to known centers of pre-historic volcanic or recent shallow, seismic activity. Because of the current distribution of GPS sites with robust velocity estimates, we limit our models to possible magmatic activity in the northern, proximal to the volcanic centers of Morne Diablotins and Morne aux Diables, and southern, proximal to volcanic centers of Soufriere and Morne Plat Pays, regions of the island. Surface deformation data from the northernmost sites may be fit with the development of a several km-long dike trending approximately northeast- southwest. Activity in the southern volcanic centers is best modeled by an expanding point source at approximately 1 km depth.

  2. Connecting NSF funding to patent innovation in nanotechnology (2001-2004)

    International Nuclear Information System (INIS)

    Huang Zan; Chen Hsinchun; Li Xin; Roco, Mihail C.

    2006-01-01

    Nanotechnology research has experienced growth rapid in knowledge and innovations; it also attracted significant public funding in recent years. Several countries have recognized nanotechnology as a critical research domain that promises to revolutionize a wide range of fields of applications. In this paper, we present an analysis of the funding for nanoscale science and engineering (NSE) at the National Science Foundation (NSF) and its implications on technological innovation (number of patents) in this field from 2001 to 2004. Using a combination of basic bibliometric analysis and content visualization tools, we identify growth trends, research topic distribution, and the evolution in NSF funding and commercial patenting activities recorded at the United States Patent Office (USPTO). The patent citations are used to compare the impact of the NSF-funded research on nanotechnology development with research supported by other sources in the United States and abroad. The analysis shows that the NSF-funded researchers and patents authored by them have significantly higher impact based on patent citation measures in the four-year period than other comparison groups. The NSF-authored patent impact is growing faster with the lifetime of a patent, indicating the long-term importance of fundamental research

  3. The NSF Cybersecurity Center of Excellence: Translating Identity Management and Cybersecurity into Scientific Collaboration

    Science.gov (United States)

    Welch, V.

    2016-12-01

    Scientists care deeply about their collaborations: who is a member, who can access, produce, and correct data, and manager instruments critical to their science missions. The communities of cybersecurity and identity management professionals develop tools to support collaborations and the undertaking of trustworthy science, but there are large cultural and linguistic gaps between these communities and the scientists they service. The National Science Foundation has recently funded a NSF Cybersecurity Center of Excellence to help its community of projects by providing leadership and addressing the challenges of trustworthy science. A key goal of this NSF Center has been translating between the goals of the science community into requirements and risks understood by identity management and cybersecurity communities. This talk will give an update on the Center's efforts and other services it provides to the NSF community to bridge these cultures.

  4. NSF Support for Physics at the Undergraduate Level: A View from Inside

    Science.gov (United States)

    McBride, Duncan

    2015-03-01

    NSF has supported a wide range of projects in physics that involve undergraduate students. These projects include NSF research grants in which undergraduates participate; Research Experiences for Undergraduates (REU) centers and supplements; and education grants that range from upper-division labs that may include research, to curriculum development for upper- and lower-level courses and labs, to courses for non-majors, to Physics Education Research (PER). The NSF Divisions of Physics, Materials Research, and Astronomy provide most of the disciplinary research support, with some from other parts of NSF. I recently retired as the permanent physicist in NSF's Division of Undergraduate Education (DUE), which supports the education grants. I was responsible for a majority of DUE's physics grants and was involved with others overseen by a series of physics rotators. There I worked in programs entitled Instrumentation and Laboratory Improvement (ILI); Course and Curriculum Development (CCD); Course, Curriculum, and Laboratory Improvement (CCLI); Transforming Undergraduate STEM Education (TUES); and Improving Undergraduate STEM Education (IUSE). NSF support has enabled physics Principal Investigators to change and improve substantially the way physics is taught and the way students learn physics. The most important changes are increased undergraduate participation in physics research; more teaching using interactive engagement methods in classes; and growth of PER as a legitimate field of physics research as well as outcomes from PER that guide physics teaching. In turn these have led, along with other factors, to students who are better-prepared for graduate school and work, and to increases in the number of undergraduate physics majors. In addition, students in disciplines that physics directly supports, notably engineering and chemistry, and increasingly biology, are better and more broadly prepared to use their physics education in these fields. I will describe NSF

  5. A Chinese View on the Cultural Conditionality of Logic and Epistemology: Zhang Dongsun’s Intercultural Methodology

    Directory of Open Access Journals (Sweden)

    Jana Rošker

    2010-12-01

    Full Text Available Recognizing the fact that comprehension, analysis and transmission of reality are based on diversely structured socio-political contexts as well as on different categorical and essential postulates, offers a prospect of enrichment. Thus, this article presents an analysis and interpretation of one of the first Chinese theoreticians, working in the field of intercultural methodology. Although Zhang Dongsun (1886–1973 can be considered as one of the leading Chinese philosophers of the 20th Century, his criticism of Sinicized Marxist ideologies marked him as a political dissident and he was consequently consigned to oblivion for several decades; only recently has his work been rediscovered by a number of younger Chinese theorists, who have shown a growing interest in his ideas. Although he is still relatively unknown in the West, Zhang definitely deserves to be recognized for his contributions to Chinese and comparative philosophy. The present article focuses on his extraordinary ability to introduce Western thought in a way which was compatible with the specific methodology of traditional Chinese thought. According to such presumptions, culture is viewed as an entity composed of a number of specific discourses and relations. The article shows how the interweaving and interdependence of these discourses form different cultural backgrounds, which manifest themselves in the specific, culturally determined structures of language and logic. It also explains the role of traditional elements in his cultural epistemology.

  6. A Theta lift representation for the Kawazumi-Zhang and Faltings invariants of genus-two Riemann surfaces

    CERN Document Server

    Pioline, Boris

    2016-01-01

    The Kawazumi-Zhang invariant $\\varphi$ for compact genus-two Riemann surfaces was recently shown to be a eigenmode of the Laplacian on the Siegel upper half-plane, away from the separating degeneration divisor. Using this fact and the known behavior of $\\varphi$ in the non-separating degeneration limit, it is shown that $\\varphi$ is equal to the Theta lift of the unique (up to normalization) weak Jacobi form of weight $-2$. This identification provides the complete Fourier-Jacobi expansion of $\\varphi$ near the non-separating node, gives full control on the asymptotics of $\\varphi$ in the various degeneration limits, and provides a efficient numerical procedure to evaluate $\\varphi$ to arbitrary accuracy. It also reveals a mock-type holomorphic Siegel modular form of weight $-2$ underlying $\\varphi$. From the general relation between the Faltings invariant, the Kawazumi-Zhang invariant and the discriminant for hyperelliptic Riemann surfaces, a Theta lift representation for the Faltings invariant in genus two ...

  7. Prevalence of NSF following intravenous gadolinium-contrast media administration in dialysis patients with endstage renal disease

    Energy Technology Data Exchange (ETDEWEB)

    Heinz-Peer, Gertraud, E-mail: gertraud.heinz@meduniwien.ac.a [Department of Radiology, Medical University of Vienna (Austria); Neruda, Anita [Department of Radiology, Medical University of Vienna (Austria); Watschinger, Bruno; Vychytil, Andreas [Department of Nephrology, Medical University of Vienna (Austria); Geusau, Alexandra [Department of Dermatology, Medical University of Vienna (Austria); Haumer, Markus [Department of Internal Medicine II, Medical University of Vienna (Austria); Weber, Michael [Department of Radiology, Medical University of Vienna (Austria)

    2010-10-15

    Purpose: To evaluate the prevalence of nephrogenic systemic fibrosis (NSF) in a patient population being at highest risk for developing this disease and to evaluate possible risk factors. Materials and methods: The radiological records of 552 patients with ESRD being on hemodialysis (HD) or peritoneal dialysis (PD) were retrospectively reviewed to identify whether the patients underwent MR-examinations with or without intravenous administration of GBCA. In case of exposure to GBCA, the number of contrast injections, the benchmark and the cumulative doses of GBCA, and possible cofactors regarding pathogenesis of NSF were recorded. Diagnosis of NSF was confirmed either by deep skin biopsy or by review of medical and histopathological records. Data of NSF patients were compared with data of dialysis patients who did not develop NSF after MR-examinations. Results: 146 dialysis patients underwent MRI without i.v.-administration of GBCA. No case of NSF was observed in this patient population. 195/552 patients proved to have a total number of 325 well-documented exposures to GBCA. Seven different types of GBCA were used during these MR-examinations. NSF prevalence rate was 1.6%. One patient died of NSF. Three different types of GBCA were involved in 6 NSF cases. 4/6 proved to be confounded cases. The cumulative dose of GBCA, history of thrombosis, recent surgery, and the combination of HD and PD proved to be significant cofactors for the development of NSF (p < .05). No significant difference regarding residual renal clearance (p = .898) and residual urine volume (p = .083) was found between NSF and non-NSF patients. Conclusion: The prevalence of NSF proved to be much lower in this high risk patient group being exposed to GBCA compared to the literature. NSF was not observed in ESRD patients undergoing MRI without administration of GBCA. Our data support a positive association between cumulative dose of GBCA and development of NSF. No positive association was found

  8. Dr. Tulga Ersal at NSF Workshop Accessible Remote Testbeds ART'15

    Science.gov (United States)

    Event Archives Dr. Tulga Ersal at NSF Workshop Accessible Remote Testbeds ART'15 On November 12th, Dr Workshop on Accessible Remote Testbeds (ART'15) at Georgia Tech. From the event website: The rationale behind the ART'15 workshop is that remote-access testbeds could, if done right, significantly change how

  9. 78 FR 58569 - Notice of Meeting; NSF Synchrotron Subcommittee of the Advisory Committee for Mathematical and...

    Science.gov (United States)

    2013-09-24

    ... report findings--Murray Gibson, Northeastern University 2. Importance of materials research facilities...--Patricia Dehmer, DOE 3. Biology/biomaterials talk--importance of materials research facilities--Pupa... Materials Research on its facilities portfolio including the role it and NSF should play in synchrotron...

  10. 77 FR 64799 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2012-10-23

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy... Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770) requires... Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25...

  11. 78 FR 46330 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2013-07-31

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Office of Science... High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat... CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy...

  12. 78 FR 12043 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2013-02-21

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Office of Science... High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat... INFORMATION CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of...

  13. Development of a Consensus Standard for School Equipment: NSF/NSSEA 380

    Science.gov (United States)

    Breitner, Ashlee

    2011-01-01

    For many years, the school supplies and equipment industry has investigated methods to ensure product safety and compliance across all its product categories. In early 2010, NSF International and the National School Supply and Equipment Association (NSSEA) came together to develop quality standards for products and equipment designed for use in…

  14. 77 FR 33449 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2012-06-06

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Office of Science... High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat..., Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown...

  15. Linking the GLOBE Program With NASA and NSF Large-Scale Experiments

    Science.gov (United States)

    Filmer, P. E.

    2005-12-01

    NASA and the NSF, the sponsoring Federal agencies for the GLOBE Program, are seeking the participation of science teams who are working at the cutting edge of Earth systems science in large integrated Earth systems science programs. Connecting the GLOBE concept and structure with NASA and NSF's leading Earth systems science programs will give GLOBE schools and students access to top scientists, and expose them to programs that have been designated as scientific priorities. Students, teachers, parents, and their communities will be able to see how scientists of many disciplines work together to learn about the Earth system. The GLOBE solicitation released by the NSF targets partnerships between GLOBE and NSF/NASA-funded integrated Earth systems science programs. This presentation will focus on the goals and requirements of the NSF solicitation. Proponents will be expected to provide ways for the GLOBE community to interact with a group of scientists from their science programs as part of a wider joint Earth systems science educational strategy (the sponsoring agencies', GLOBE's, and the proposing programs'). Teams proposing to this solicitation must demonstrate: - A focus on direct connections with major NSF Geosciences and/or Polar Programs and/or NASA Earth-Sun research programs that are related to Earth systems science; - A demonstrable benefit to GLOBE and to NSF Geosciences and/or Polar Programs or NASA Earth-Sun education goals (providing access to program researchers and data, working with GLOBE in setting up campaigns where possible, using tested GLOBE or non-GLOBE protocols to the greatest extent possible, actively participating in the wider GLOBE community including schools, among other goals); - An international component; - How the existing educational efforts of the large science program will coordinate with GLOBE; - An Earth systems science education focus, rather than a GLOBE protocol-support focus; - A rigorous evaluation and assessment component

  16. Comparative analysis of the gene expression profile of probiotic Lactobacillus casei Zhang with and without fermented milk as a vehicle during transit in a simulated gastrointestinal tract.

    Science.gov (United States)

    Wang, Jicheng; Zhong, Zhi; Zhang, Wenyi; Bao, Qiuhua; Wei, Aibin; Meng, He; Zhang, Heping

    2012-06-01

    Studies have found that the survival of probiotics could be strongly enhanced with dairy products as delivery vehicles, but the molecular mechanism by which this might occur has seldom been mentioned. In this study, microarray technology was used to detect the gene expression profile of Lactobacillus casei Zhang with and without fermented milk used as a delivery vehicle during transit in simulated gastrointestinal juice. Numerous genes of L. casei Zhang in strain suspension were upregulated compared to those from L. casei Zhang in fermented milk. These data might indicate that L. casei Zhang is stimulated directly without the protection of fermented milk, and the high-level gene expression observed here may be a stress response at the transcriptional level. A large proportion of genes involved in translation and cell division were downregulated in the bacteria that were in strain suspension during transit in simulated intestinal juice. This may impede protein biosynthesis and cell division and partially explain the lower viability of L. casei Zhang during transit in the gastrointestinal tract without the delivery vehicle. Copyright © 2012 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.

  17. Global nanotechnology development from 1991 to 2012: patents, scientific publications, and effect of NSF funding

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Hsinchun [The University of Arizona, Department of Management Information Systems (United States); Roco, Mihail C. [National Science Foundation (United States); Son, Jaebong; Jiang, Shan, E-mail: jiangs@email.arizona.edu; Larson, Catherine A.; Gao, Qiang [The University of Arizona, Department of Management Information Systems (United States)

    2013-09-15

    In a relatively short interval for an emerging technology, nanotechnology has made a significant economic impact in numerous sectors including semiconductor manufacturing, catalysts, medicine, agriculture, and energy production. A part of the United States (US) government investment in basic research has been realized in the last two decades through the National Science Foundation (NSF), beginning with the nanoparticle research initiative in 1991 and continuing with support from the National Nanotechnology Initiative after fiscal year 2001. This paper has two main goals: (a) present a longitudinal analysis of the global nanotechnology development as reflected in the United States Patent and Trade Office (USPTO) patents and Web of Science (WoS) publications in nanoscale science and engineering (NSE) for the interval 1991-2012; and (b) identify the effect of basic research funded by NSF on both indicators. The interval has been separated into three parts for comparison purposes: 1991-2000, 2001-2010, and 2011-2012. The global trends of patents and scientific publications are presented. Bibliometric analysis, topic analysis, and citation network analysis methods are used to rank countries, institutions, technology subfields, and inventors contributing to nanotechnology development. We then, examined how these entities were affected by NSF funding and how they evolved over the past two decades. Results show that dedicated NSF funding used to support nanotechnology R and D was followed by an increased number of relevant patents and scientific publications, a greater diversity of technology topics, and a significant increase of citations. The NSF played important roles in the inventor community and served as a major contributor to numerous nanotechnology subfields.

  18. Global nanotechnology development from 1991 to 2012: patents, scientific publications, and effect of NSF funding

    International Nuclear Information System (INIS)

    Chen, Hsinchun; Roco, Mihail C.; Son, Jaebong; Jiang, Shan; Larson, Catherine A.; Gao, Qiang

    2013-01-01

    In a relatively short interval for an emerging technology, nanotechnology has made a significant economic impact in numerous sectors including semiconductor manufacturing, catalysts, medicine, agriculture, and energy production. A part of the United States (US) government investment in basic research has been realized in the last two decades through the National Science Foundation (NSF), beginning with the nanoparticle research initiative in 1991 and continuing with support from the National Nanotechnology Initiative after fiscal year 2001. This paper has two main goals: (a) present a longitudinal analysis of the global nanotechnology development as reflected in the United States Patent and Trade Office (USPTO) patents and Web of Science (WoS) publications in nanoscale science and engineering (NSE) for the interval 1991–2012; and (b) identify the effect of basic research funded by NSF on both indicators. The interval has been separated into three parts for comparison purposes: 1991–2000, 2001–2010, and 2011–2012. The global trends of patents and scientific publications are presented. Bibliometric analysis, topic analysis, and citation network analysis methods are used to rank countries, institutions, technology subfields, and inventors contributing to nanotechnology development. We then, examined how these entities were affected by NSF funding and how they evolved over the past two decades. Results show that dedicated NSF funding used to support nanotechnology R and D was followed by an increased number of relevant patents and scientific publications, a greater diversity of technology topics, and a significant increase of citations. The NSF played important roles in the inventor community and served as a major contributor to numerous nanotechnology subfields

  19. NSF Workshop Report: Discovering General Principles of Nervous System Organization by Comparing Brain Maps across Species

    Science.gov (United States)

    Striedter, Georg F.; Belgard, T. Grant; Chen, Chun-Chun; Davis, Fred P.; Finlay, Barbara L.; Güntürkün, Onur; Hale, Melina E.; Harris, Julie A.; Hecht, Erin E.; Hof, Patrick R.; Hofmann, Hans A.; Holland, Linda Z.; Iwaniuk, Andrew N.; Jarvis, Erich D.; Karten, Harvey J.; Katz, Paul S.; Kristan, William B.; Macagno, Eduardo R.; Mitra, Partha P.; Moroz, Leonid L.; Preuss, Todd M.; Ragsdale, Clifton W.; Sherwood, Chet C.; Stevens, Charles F.; Stüttgen, Maik C.; Tsumoto, Tadaharu; Wilczynski, Walter

    2014-01-01

    Efforts to understand nervous system structure and function have received new impetus from the federal Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative. Comparative analyses can contribute to this effort by leading to the discovery of general principles of neural circuit design, information processing, and gene-structure-function relationships that are not apparent from studies on single species. We here propose to extend the comparative approach to nervous system ‘maps’ comprising molecular, anatomical, and physiological data. This research will identify which neural features are likely to generalize across species, and which are unlikely to be broadly conserved. It will also suggest causal relationships between genes, development, adult anatomy, physiology, and, ultimately, behavior. These causal hypotheses can then be tested experimentally. Finally, insights from comparative research can inspire and guide technological development. To promote this research agenda, we recommend that teams of investigators coalesce around specific research questions and select a set of ‘reference species’ to anchor their comparative analyses. These reference species should be chosen not just for practical advantages, but also with regard for their phylogenetic position, behavioral repertoire, well-annotated genome, or other strategic reasons. We envision that the nervous systems of these reference species will be mapped in more detail than those of other species. The collected data may range from the molecular to the behavioral, depending on the research question. To integrate across levels of analysis and across species, standards for data collection, annotation, archiving, and distribution must be developed and respected. To that end, it will help to form networks or consortia of researchers and centers for science, technology, and education that focus on organized data collection, distribution, and training. These activities could be

  20. Advancing Capabilities for Understanding the Earth System Through Intelligent Systems, the NSF Perspective

    Science.gov (United States)

    Gil, Y.; Zanzerkia, E. E.; Munoz-Avila, H.

    2015-12-01

    The National Science Foundation (NSF) Directorate for Geosciences (GEO) and Directorate for Computer and Information Science (CISE) acknowledge the significant scientific challenges required to understand the fundamental processes of the Earth system, within the atmospheric and geospace, Earth, ocean and polar sciences, and across those boundaries. A broad view of the opportunities and directions for GEO are described in the report "Dynamic Earth: GEO imperative and Frontiers 2015-2020." Many of the aspects of geosciences research, highlighted both in this document and other community grand challenges, pose novel problems for researchers in intelligent systems. Geosciences research will require solutions for data-intensive science, advanced computational capabilities, and transformative concepts for visualizing, using, analyzing and understanding geo phenomena and data. Opportunities for the scientific community to engage in addressing these challenges are available and being developed through NSF's portfolio of investments and activities. The NSF-wide initiative, Cyberinfrastructure Framework for 21st Century Science and Engineering (CIF21), looks to accelerate research and education through new capabilities in data, computation, software and other aspects of cyberinfrastructure. EarthCube, a joint program between GEO and the Advanced Cyberinfrastructure Division, aims to create a well-connected and facile environment to share data and knowledge in an open, transparent, and inclusive manner, thus accelerating our ability to understand and predict the Earth system. EarthCube's mission opens an opportunity for collaborative research on novel information systems enhancing and supporting geosciences research efforts. NSF encourages true, collaborative partnerships between scientists in computer sciences and the geosciences to meet these challenges.

  1. Supporting "The Best and Brightest" in Science and Engineering: NSF Graduate Research Fellowships

    OpenAIRE

    Richard B. Freeman; Tanwin Chang; Hanley Chiang

    2005-01-01

    The National Science Foundation's (NSF) Graduate Research Fellowship (GRF) is a highly prestigious award for science and engineering (S&E) graduate students. This paper uses data from 1952 to 2004 on the population of over 200,000 applicants to the GRF to examine the determinants of the number and characteristics of applicants and the characteristics of awardees. In the early years of the program, GRF awards went largely to physical science and mathematics students and disproportionately to w...

  2. US Global Change Research Program Distributed Cost Budget Interagency Funds Transfer from DOE to NSF

    Energy Technology Data Exchange (ETDEWEB)

    Uhle, Maria [National Science Foundation (NSF), Washington, DC (United States)

    2016-09-22

    These funds were transferred from DOE to NSF as DOE's contribution to the U.S. Global Change Research Program in support of 4 internationalnactivities/programs as approved by the U.S. Global Change Research Program on 14 March 2014. The programs are the International Geosphere-Biosphere Programme, the DIVERSITAS programme, and the World Climate Research Program. All program awards ended as of 09-23-2015.

  3. Dissipation dynamics of clothianidin and its control efficacy against Bradysia odoriphaga Yang and Zhang in Chinese chive ecosystems.

    Science.gov (United States)

    Zhang, Peng; He, Min; Zhao, Yunhe; Ren, Yupeng; Wei, Yan; Mu, Wei; Liu, Feng

    2016-07-01

    Clothianidin is a second-generation neonicotinoid insecticide that is quite effective against Bradysia odoriphaga Yang and Zhang, the major insect pest affecting Chinese chive in northern China. In this study, the dissipation of clothianidin in soil and its residue in leaves and pseudostems/bulbs as well as its control efficacy against B. odoriphaga and two other secondary pests were investigated in Chinese chive fields after soil application of clothianidin by the directional spray-washing method. The half-life of clothianidin was 35.73-36.10 days, and it could be detected in Chinese chive plants in both treatment plots up to 240 days after a single soil application. Clothianidin applied at 3.0 and 6.0 kg AI ha(-1) could suppress B. odoriphaga population growth, achieve satisfactory levels of pest control for almost 10 months and reduce the losses of the yield in winter. Moreover, the treatments also significantly reduced Thrips alliorum and Acrolepia alliella populations up to nearly 180 days after one application. Clothianidin can be considered to show long-lasting efficacy against B. odoriphaga and to be safe for use in Chinese chive at 3.0 and 6.0 kg AI ha(-1) once in the early root-rearing period to control B. odoriphaga in these cultivation ecosystems. © 2015 Society of Chemical Industry. © 2015 Society of Chemical Industry.

  4. Photoelastic examination of borosilicate glass discs used in the insulating legs for the NSF tandem

    International Nuclear Information System (INIS)

    Acton, W.J.; Cundy, D.

    1981-04-01

    The results are presented of a photoelastic stress analysis carried out to establish the effect of re-annealing borosilicate glass discs used in the insulating legs of the 30 MV tandem van de Graaff accelerator of the NSF. The results show that re-annealing of the glass discs has no measurable effect on reducing the high stress at inclusions and re-emphasise the need to exercise great care in selecting suitable discs for use in the insulating legs. (U.K.)

  5. Mg2+ improves the thermotolerance of probiotic Lactobacillus rhamnosus GG, Lactobacillus casei Zhang and Lactobacillus plantarum P-8.

    Science.gov (United States)

    Yang, Y; Huang, S; Wang, J; Jan, G; Jeantet, R; Chen, X D

    2017-04-01

    Food-related carbohydrates and proteins are often used as thermoprotectants for probiotic lactobacilli during industrial production and processing. However, the effect of inorganic salts is rarely reported. Magnesium is the second-most abundant cation in bacteria, and commonly found in various foods. Mg 2+ homeostasis is important in Salmonella and has been reported to play a critical role in their thermotolerance. However, the role of Mg 2+ in thermotolerance of other bacteria, in particular probiotic bacteria, still remains a hypothesis. In this study, the effect of Mg 2+ on thermotolerance of probiotic lactobacilli was investigated in three well-documented probiotic strains, Lactobacillus rhamnosus GG, Lactobacillus casei Zhang and Lactobacillus plantarum P-8, in comparison with Zn 2+ and Na + . Concentrations of Mg 2+ between 10 and 50 mmol l -1 were found to increase the bacterial survival upon heat challenge. Remarkably, Mg 2+ addition at 20 mmol l -1 led to a 100-fold higher survival of L. rhamnosus GG upon heat challenge. This preliminary study also showed that Mg 2+ shortened the heat-induced extended lag time of bacteria, which indicated the improvement in bacterial recovery from thermal injury. In order to improve the productivity and stability of live probiotics, extensive investigations have been carried out to improve thermotolerance of probiotics. However, most of these studies focused on the effects of carbohydrates, proteins or amino acids. The roles of inorganic salts in various food materials, which have rarely been reported, should be considered when incorporating probiotics into these foods. In this study, Mg 2+ was found to play a significant role in the thermotolerance of probiotic lactobacilli. A novel strategy may be available in the near future by employing magnesium salts as protective agents of probiotics during manufacturing process. © 2017 The Society for Applied Microbiology.

  6. Zhang neural network for online solution of time-varying convex quadratic program subject to time-varying linear-equality constraints

    International Nuclear Information System (INIS)

    Zhang Yunong; Li Zhan

    2009-01-01

    In this Letter, by following Zhang et al.'s method, a recurrent neural network (termed as Zhang neural network, ZNN) is developed and analyzed for solving online the time-varying convex quadratic-programming problem subject to time-varying linear-equality constraints. Different from conventional gradient-based neural networks (GNN), such a ZNN model makes full use of the time-derivative information of time-varying coefficient. The resultant ZNN model is theoretically proved to have global exponential convergence to the time-varying theoretical optimal solution of the investigated time-varying convex quadratic program. Computer-simulation results further substantiate the effectiveness, efficiency and novelty of such ZNN model and method.

  7. 77 FR 62537 - Notice of Waste Management Permit Application Received Under the Antarctic Conservation Act of 1978

    Science.gov (United States)

    2012-10-15

    ... NATIONAL SCIENCE FOUNDATION Notice of Waste Management Permit Application Received Under the Antarctic Conservation Act of 1978 AGENCY: National Science Foundation. ACTION: Notice of a Waste Management... the National Science Foundation (NSF) has received a waste management permit application for Mike...

  8. Electronic warfare receivers and receiving systems

    CERN Document Server

    Poisel, Richard A

    2014-01-01

    Receivers systems are considered the core of electronic warfare (EW) intercept systems. Without them, the fundamental purpose of such systems is null and void. This book considers the major elements that make up receiver systems and the receivers that go in them.This resource provides system design engineers with techniques for design and development of EW receivers for modern modulations (spread spectrum) in addition to receivers for older, common modulation formats. Each major module in these receivers is considered in detail. Design information is included as well as performance tradeoffs o

  9. Finite-size effects in the short-time height distribution of the Kardar-Parisi-Zhang equation

    Science.gov (United States)

    Smith, Naftali R.; Meerson, Baruch; Sasorov, Pavel

    2018-02-01

    We use the optimal fluctuation method to evaluate the short-time probability distribution P(H, L, t) of height at a single point, H=h(x=0, t) , of the evolving Kardar-Parisi-Zhang (KPZ) interface h(x, t) on a ring of length 2L. The process starts from a flat interface. At short times typical (small) height fluctuations are unaffected by the KPZ nonlinearity and belong to the Edwards-Wilkinson universality class. The nonlinearity, however, strongly affects the (asymmetric) tails of P(H) . At large L/\\sqrt{t} the faster-decaying tail has a double structure: it is L-independent, -\\lnP˜≤ft\\vert H\\right\\vert 5/2/t1/2 , at intermediately large \\vert H\\vert , and L-dependent, -\\lnP˜ ≤ft\\vert H\\right\\vert 2L/t , at very large \\vert H\\vert . The transition between these two regimes is sharp and, in the large L/\\sqrt{t} limit, behaves as a fractional-order phase transition. The transition point H=Hc+ depends on L/\\sqrt{t} . At small L/\\sqrt{t} , the double structure of the faster tail disappears, and only the very large-H tail, -\\lnP˜ ≤ft\\vert H\\right\\vert 2L/t , is observed. The slower-decaying tail does not show any L-dependence at large L/\\sqrt{t} , where it coincides with the slower tail of the GOE Tracy-Widom distribution. At small L/\\sqrt{t} this tail also has a double structure. The transition between the two regimes occurs at a value of height H=Hc- which depends on L/\\sqrt{t} . At L/\\sqrt{t} \\to 0 the transition behaves as a mean-field-like second-order phase transition. At \\vert H\\vert c-\\vert the slower tail behaves as -\\lnP˜ ≤ft\\vert H\\right\\vert 2L/t , whereas at \\vert H\\vert >\\vert H_c-\\vert it coincides with the slower tail of the GOE Tracy-Widom distribution.

  10. Application of water quality indices NSF, DINIUS and BMWP to Ayura Creek, Antioquia, Colombia

    International Nuclear Information System (INIS)

    Gonzalez Melendez, Viky; Caicedo Quintero, Orlando; Aguirre Ramirez, Nestor

    2013-01-01

    This investigation evaluates the quality of water in the creek The Ayura (municipality of Envigado, Antioquia, Colombia), through application of the National Sanitation Foundation (NSF) and Dinius quality indexes, and the biotic index BMWP/Col. the estimate of these indexes was conducted with data collected in three sites and three moments. Physicochemical and microbiological variables were determinate; we also performed a qualitative and quantitative sampling of aquatic macroinvertebrates. Using this methodology the behavior of physical-chemical and biological community in the different sites was studied. The physicochemical and aquatic macroinvertebrate indexes results showed that site 1 provides a good quality of water and the sites 2 and 3 a middle deteriorated water quality.

  11. Structural analysis of wind turbine rotors for NSF-NASA Mod-0 wind power system

    Science.gov (United States)

    Spera, D. A.

    1976-01-01

    Preliminary estimates are presented of vibratory loads and stresses in hingeless and teetering rotors for the proposed NSF-NASA Mod-0 wind power system. Preliminary blade design utilizes a tapered tubular aluminum spar which supports nonstructural aluminum ribs and skin and is joined to the rotor hub by a steel shank tube. Stresses in the shank of the blade are calculated for static, rated, and overload operating conditions. Blade vibrations were limited to the fundamental flapping modes, which were elastic cantilever bending for hingeless rotor blades and rigid-body rotation for teetering rotor blades. The MOSTAB-C computer code was used to calculate aerodynamic and mechanical loads. The teetering rotor has substantial advantages over the hingeless rotor with respect to shank stresses, fatigue life, and tower loading. The hingeless rotor analyzed does not appear to be structurally stable during overloads.

  12. Proceedings: Joint DOE/NSF Workshop on flow of particulates and fluids

    Energy Technology Data Exchange (ETDEWEB)

    1993-12-31

    These proceedings are the result of the Fifth DOR-NSF Workshop on fundamental research in the area of particulate two-phase flow and granular flow. The present collection of twenty contributions from universities and national laboratories is based on research projects sponsored by either the Department of Energy or the National Science Foundation. These papers illustrate some of the latest advances in theory, simulations, and experiments. The papers from the Workshop held September 29--October 1, 1993 have been separated into three basic areas: experiments, theory, and numerical simulations. A list of attendees at the workshop is included at the end of the proceedings. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

  13. Monitoring the consequences of decreased ozone protection: The NSF ultraviolet radiation monitoring network

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    The effects of decreased protection from ultraviolet radiation are as troubling as the continuing depletion of stratospheric ozone. Evidence exists to clearly link ozone depletion to changes in the antarctic marine environment. Results of two 1992 papers are summarized here. Enhanced exposure to mid-range UV radiation was found to be affecting marine ecosystems with a recorded 6-12 percent reduction in primary productivity directly related to the ozone layer depletion. In another experiment, a model was developed indicating that the ozone hole could reduce near-surface photosynthesis by as much as 12-15 percent. The NSF UV monitoring system in place for these and other experiments uses a spectroradiometer, making hourly, high-resolution measurements of the distribution of UV surface irradiance

  14. Preparing Scientists for Scientific Careers: Broader Impacts from an NSF CAREER Award

    Science.gov (United States)

    Crosby, Alfred

    2008-03-01

    The scientific focus of my NSF CAREER Award is the impact of patterns, topographical and surface chemical in design, on the adhesion of soft polymer interfaces. Although this topic has provided a strong foundation for the mentoring and training of graduate students, the primary broader impacts of my award have focused on the development of ``soft'' skills in graduate and post-doctoral researchers in STEM disciplines. I have developed a course on ``Scientific and Engineering Management,'' which provides an open forum for students to explore the skills that, in many ways, define successful careers for many scientists. Topics include: leadership, proposal writing, group management, communication in diverse environments, and ethics. In this presentation, I highlight the primary phases of this program, how it meshes with scientific goals, and general statements about the mission of education outreach within STEM disciplines.

  15. Improving Science Teacher Preparation through the APS PhysTEC and NSF Noyce Programs

    Science.gov (United States)

    Williams, Tasha; Tyler, Micheal; van Duzor, Andrea; Sabella, Mel

    2013-03-01

    Central to the recruitment of students into science teaching at a school like CSU, is a focus on the professional nature of teaching. The purpose of this focus is twofold: it serves to change student perceptions about teaching and it prepares students to become teachers who value continued professional development and value the science education research literature. The Noyce and PhysTEC programs at CSU place the professional nature of teaching front and center by involving students in education research projects, paid internships, attendance at conferences, and participation in a new Teacher Immersion Institute and a Science Education Journal Reading Class. This poster will focus on specific components of our teacher preparation program that were developed through these two programs. In addition we will describe how these new components provide students with diverse experiences in the teaching of science to students in the urban school district. Supported by the NSF Noyce Program (0833251) and the APS PhysTEC Program.

  16. Unmet needs for analyzing biological big data: A survey of 704 NSF principal investigators.

    Directory of Open Access Journals (Sweden)

    Lindsay Barone

    2017-10-01

    Full Text Available In a 2016 survey of 704 National Science Foundation (NSF Biological Sciences Directorate principal investigators (BIO PIs, nearly 90% indicated they are currently or will soon be analyzing large data sets. BIO PIs considered a range of computational needs important to their work, including high performance computing (HPC, bioinformatics support, multistep workflows, updated analysis software, and the ability to store, share, and publish data. Previous studies in the United States and Canada emphasized infrastructure needs. However, BIO PIs said the most pressing unmet needs are training in data integration, data management, and scaling analyses for HPC-acknowledging that data science skills will be required to build a deeper understanding of life. This portends a growing data knowledge gap in biology and challenges institutions and funding agencies to redouble their support for computational training in biology.

  17. Unmet needs for analyzing biological big data: A survey of 704 NSF principal investigators.

    Science.gov (United States)

    Barone, Lindsay; Williams, Jason; Micklos, David

    2017-10-01

    In a 2016 survey of 704 National Science Foundation (NSF) Biological Sciences Directorate principal investigators (BIO PIs), nearly 90% indicated they are currently or will soon be analyzing large data sets. BIO PIs considered a range of computational needs important to their work, including high performance computing (HPC), bioinformatics support, multistep workflows, updated analysis software, and the ability to store, share, and publish data. Previous studies in the United States and Canada emphasized infrastructure needs. However, BIO PIs said the most pressing unmet needs are training in data integration, data management, and scaling analyses for HPC-acknowledging that data science skills will be required to build a deeper understanding of life. This portends a growing data knowledge gap in biology and challenges institutions and funding agencies to redouble their support for computational training in biology.

  18. Year 4 Of The NSF-funded PAARE Project At SC State

    Science.gov (United States)

    Walter, Donald K.; Brittain, S. D.; Cash, J. L.; Hartmann, D. H.; Howell, S. B.; King, J. R.; Leising, M. D.; Mayo, E. A.; Mighell, K. J.; Smith, D. M.

    2012-01-01

    We summarize the progress made through Year 4 of "A Partnership in Observational and Computational Astronomy (POCA)". This NSF-funded project is part of the "Partnerships in Astronomy and Astrophysics Research and Education (PAARE)" program. Our partnership includes South Carolina State University (a Historically Black College/University), Clemson University (a Ph.D. granting institution) and the National Optical Astronomy Observatory. Fellowships provided by POCA as well as recruitment efforts on the national level have resulted in enrolling a total of four underrepresented minorities into the Ph.D. program in astronomy at Clemson. We report on the success and challenges to recruiting students into the undergraduate physics major with astronomy option at SC State. Our summer REU program under POCA includes underrepresented students from across the country conducting research at each of our three institutions. Examples are given of our inquiry-based, laboratory exercises and web- based activities related to cosmology that have been developed with PAARE funding. We discuss our ground-based photometric and spectroscopic study of RV Tauri and Semi-Regular variables which has been expanded to include successful Cycle 2 Kepler observations of a dozen of these objects reported elsewhere at this conference (see D.K. Walter, et.al.). Support for the POCA project is provided by the NSF PAARE program to South Carolina State University under award AST-0750814 as well as resources and support provided by Clemson University and the National Optical Astronomy Observatory. Support for the Kepler observations is provided by NASA to South Carolina State University under award NNX11AB82G.

  19. Undergraduate Research as a Process for STEM Teaching and Learning Systemic Change: Lessons Learned from the Council on Undergraduate Research NSF CCLI and TUES Projects

    Science.gov (United States)

    Ambos, E. L.; Havholm, K. G.; Malachowski, M.; Osborn, J.; Karukstis, K.

    2013-12-01

    concerted efforts to affect policy, workload, tenure and promotion and resource issues, which are often core factors in any STEM education change process. Several systems are now connecting individual campus-based undergraduate research efforts more effectively, and tying undergraduate research to regional workforce and economic development programs. Many campus teams are moving their department and colleges toward curricular innovations that emphasize scaffolding undergraduate research throughout the undergraduate curriculum. An NSF EAGER/WIDER supplement to the CUR CCLI III award was received in October 2012 and expanded the scope of the project to include deeper study of the changes processes underway at each of the six systems and to tease out the factors that can either promote or retard expansion of undergraduate research as a teaching and learning paradigm. Lessons learned from one of the six systems, the University of Wisconsin, will be highlighted.

  20. Receiver Test Selection Criteria

    Science.gov (United States)

    2015-03-12

    The DOT requests that GPS manufacturers submit receivers for test in the following TWG categories: - Aviation (non-certified), cellular, general location/navigation, high precision, timing, networks, and space-based receivers - Each receiver should b...

  1. Market Feasibility of Burberry and Gucci in Zhang Jiagang City, P.R China : Case: Introduce a New Luxury Brand into Kelly Mall

    OpenAIRE

    Wang, Ning; Wu, Youran

    2012-01-01

    With the rapid development of Chinese economy, wealth has spread from largest coastal cities to smaller cities and luxury stores have started to follow. Kelly Mall is the largest high-end department store situated in Zhang Jiagang City, Jiangsu Province, P.R China. This research aims to figure out if Kelly Mall should introduce a new luxury brand, help-ing Kelly Mall’s board members make decision on taking either Burberry or Gucci or both of them into its luxury department. Theoretical framew...

  2. Exploration of NSF-ATE Projects Approaches in the Integration of Technology and Engineering Education at the K-12 Levels

    Science.gov (United States)

    Strobel, Johannes; Mendoza Díaz, Noemi V.

    2012-01-01

    Access to post-secondary education, specifically in the technical, two-year institution area, is a topic of growing interest in the country. Funding agencies, such as NSF, via the Advanced Technological Education Program (ATE), are supporting initiatives and research aimed at increasing the number of technicians and engineers and improving…

  3. Cryptosporidium sebagai Indikator Biologi dan Indeks Nsf-Wqi untuk Mengevaluasi Kualitas Air (Studi Kasus: Hulu Sungai Citarum, Kabupaten Bandung

    Directory of Open Access Journals (Sweden)

    Tastaptyani Kurnia Nufutomo

    2017-11-01

    Full Text Available Kualitas air yang menurun di Hulu Sungai Citarum dapat disebabkan oleh banyak faktor. Faktor-faktor tersebut dapat diketahui dari parameter fisika, kimia dan biologi. Parameter biologi yang digunakan untuk mengevaluasi kualitas air adalah  mikroorganisme patogen yang menimbulkan penyakit di sistem pencernaan seperti diare akut, yaitu Coliform dan Cryptosporidium. Tujuan penelitian ini adalah untuk mengetahui status kualitas air di Hulu Sungai Citarum dengan indeks kualitas air NSF-WQI, mengetahui hubungan dan pengaruh parameter fisik dan kimia air terhadap parameter biologi, menentukan faktor utama dari parameter air yang paling berpengaruh dan mengetahui hubungan serta pengaruh faktor utama tersebut terhadap Cryptosporidium. Metode yang digunakan adalah  mengambil sampel di tiap stasiun dengan composite, mengidentifikasi dan analisis Coliform dengan MPN dan identifikasi Crytosporidium dengan Ziehl Neelsen staining, kemudian menganalisis parameter kimia dan fisika dengan indeks NSF-WQI, lalu data tersebut diolah menggunakan metode statistik PCA. Hasil pengukuran kualitas air berdasarkan NSF-WQI adalah kualitas air di Hulu Sungai Citarum termasuk kategori buruk dan medium. Keberadaan Cryptosporidium di Hulu Sungai Citarum disebabkan oleh 2 (dua faktor utama, yaitu faktor pertama terdiri dari DO, turbiditas, NO2, NH4 dan total Colifom, sedangkan faktor kedua terdiri dari TSS, COD dan PO4. Kedua faktor tersebut tidak signifikan dengan keberadaan Cryptosporidium di Hulu Sungai Citarum. Kata kunci: Cryptosporidium, Hulu Sungai Citarum, Indeks NSF-WQI, Kualitas Air

  4. Year-Long Peer Mentoring Activity to Enhance the Retention of Freshmen STEM Students in a NSF Scholarship Program

    Science.gov (United States)

    Cutright, Teresa J.; Evans, Edward

    2016-01-01

    The last year of a National Science Foundation (NSF) funded scholarship program was used to provide pseudo-formal peer mentoring activities to engineering, mathematics, and science undergraduates. A one-credit class was used to afford time for peer mentors and mentees to interact. During the fall semester, seniors augmented each week's topics with…

  5. Evaluation of NSF's Program of Grants and Vertical Integration of Research and Education in the Mathematical Sciences (VIGRE)

    Science.gov (United States)

    National Academies Press, 2009

    2009-01-01

    In 1998, the National Science Foundation (NSF) launched a program of Grants for Vertical Integration of Research and Education in the Mathematical Sciences (VIGRE). These grants were designed for institutions with PhD-granting departments in the mathematical sciences, for the purpose of developing high-quality education programs, at all levels,…

  6. The U.S. NSF Ocean Observatories Initiative: A Modern Virtual Observatory

    Science.gov (United States)

    Orcutt, John; Vernon, Frank; Peach, Cheryl; Arrott, Matthew; Graybeal, John; Farcas, Claudiu; Farcas, Emilia; Krueger, Ingolf; Meisinger, Michael; Chave, Alan

    2010-05-01

    The NSF Ocean Observatories Initiative (OOI) began a five-year construction period in October 2009. The Consortium on Ocean Leadership (COL) manages the overall program with Implementing Organizations for Coastal/Global Scale Nodes (CGSN) at Woods Hole, Oregon State and Scripps; the Regional Cabled Network (RCN) at U of Washington and Cyberinfrastructure (CI) at UCSD and more than ten subcontractors. The NSF has made a commitment to support the observatory operations and maintenance for a 30-year period; a minimal period of time to measure physical, chemical and biological data over a length of time possibly sufficient to measure secular changes associated with climate and geodesy. The CI component is a substantial departure from previous approaches to data distribution and management. These innovations include the availability of data in near-real-time with latencies of seconds, open access to all data, analysis of the data stream for detection and modeling, use of the derived knowledge to modify the network with minimal or no human interaction and maintenance of data provenance through time as new versions of the data are created through QA/QC processes. The network architecture is designed to be scalable so that addition of new sensors is straightforward and inexpensive with costs increasing linearly at worst. Rather than building new computer infrastructure (disk farms and computer clusters), we are presently exploiting Amazon's Extensible Computing Cloud (EC2) and Simple Storage System (S3) to reduce long-term commitments to hardware and maintenance in order to minimize operations and maintenance costs. The OOI CI is actively partnering with other organizations (e.g. NOAA's IOOS) to integrate existing data systems using many of the same technologies to improve broad access to existing and planned observing systems, including those that provide critical climate data. Because seasonal and annual variability of most measureable parameters is so large, the

  7. Professional Development for Graduate Students through Internships at Federal Labs: an NSF/USGS Collaboration

    Science.gov (United States)

    Snow, E.; Jones, E.; Patino, L. C.; Wasserman, E.; Isern, A. R.; Davies, T.

    2016-12-01

    In 2013 the White House initiated an effort to coordinate STEM education initiatives across federal agencies. This idea spawned several important collaborations, one of which is a set of National Science Foundation programs designed to place graduate students in federal labs for 2-12 months of their Ph.D. training. The Graduate Research Internship Program (GRIP) and the Graduate Student Preparedness program (GSP) each have the goal of exposing PhD students to the federal work environment while expanding their research tools and mentoring networks. Students apply for supplementary support to their Graduate Research Fellowship (GRIP) or their advisor's NSF award (GSP). These programs are available at several federal agencies; the USGS is one partner. At the U.S. Geological Survey, scientists propose projects, which students can find online by searching USGS GRIP, or students and USGS scientists can work together to develop a research project. At NSF, projects are evaluated on both the scientific merit and the professional development opportunities they afford the student. The career development extends beyond the science (new techniques, data, mentors) into the professional activity of writing the proposal, managing the budget, and working in a new and different environment. The USGS currently has 18 GRIP scholars, including Madeline Foster-Martinez, a UC Berkeley student who spent her summer as a GRIP fellow at the USGS Pacific Coastal and Marine Science Center working with USGS scientist Jessica Lacy. Madeline's Ph.D. work is on salt marshes and she has studied geomorphology, accretion, and gas transport using a variety of research methods. Her GRIP fellowship allowed her to apply new data-gathering tools to the question of sediment delivery to the marsh, and build and test a model for sediment delivery along marsh edges. In addition, she gained professional skills by collaborating with a new team of scientists, running a large-scale field deployment, and

  8. Calibration and Field Deployment of the NSF G-V VCSEL Hygrometer

    Science.gov (United States)

    DiGangi, J. P.; O'Brien, A.; Diao, M.; Hamm, C.; Zhang, Q.; Beaton, S. P.; Zondlo, M. A.

    2012-12-01

    Cloud formation and dynamics have a significant influence on the Earth's radiative forcing budget, which illustrates the importance of clouds with respect to global climate. Therefore, an accurate understanding of the microscale processes dictating cloud formation is crucial for accurate computer modeling of global climate change. A critical tool for understanding these processes from an airborne platform is an instrument capable of measuring water vapor with both high accuracy and time, thus spatial, resolution. Our work focuses on an open-path, compact, vertical-cavity surface-emitting laser (VCSEL) absorption-based hygrometer, capable of 25 Hz temporal resolution, deployed on the NSF/NCAR Gulfstream-V aircraft platform. The open path nature of our instrument also helps to minimize sampling artifacts. We will discuss our efforts toward achieving within 5% accuracy over 5 orders of magnitude of water vapor concentrations. This involves an intercomparison of five independent calibration methods: ice surface saturators using an oil temperature bath, solvent slush baths (e.g. chloroform/LN2, water/ice), a research-grade frost point hygrometer, static pressure experiments, and Pt catalyzed hydrogen gas. This wide variety of available tools allows us to accurately constrain the calibrant water vapor concentrations both before and after the VCSEL hygrometer sampling chamber. For example, the mixing ratio as measured by research-grade frost point hygrometer after the VCSEL hygrometer agreed within 2% of the mixing ration expected from the water/ice bubbler source before the VCSEL over the temperature range -50°C to 20°C. Finally, due to the compact nature of our instrument, we are able to perform these calibrations simultaneously at the same temperatures (-80°C to 30°C) and pressures (150 mbar to 760 mbar) as sampled ambient air during a flight. This higher accuracy can significantly influence the science utilizing this data, which we will illustrate using

  9. An Analysis of NSF Geosciences Research Experience for Undergraduate Site Programs from 2009 through 2011

    Science.gov (United States)

    Rom, E. L.; Patino, L. C.; Weiler, S.; Sanchez, S. C.; Colon, Y.; Antell, L.

    2011-12-01

    The Research Experience for Undergraduate (REU) Program at the U.S. National Science Foundation (NSF) provides U.S. undergraduate students from any college or university the opportunity to conduct research at a different institution and gain a better understanding of research career pathways. The Geosciences REU Sites foster research opportunities in areas closely aligned with geoscience programs, particularly those related to earth, atmospheric and ocean sciences. The aim of this paper is to provide an overview of the Geosciences REU Site programs run in 2009 through 2011. A survey requesting information on recruitment methods, student demographics, enrichment activities, and fields of research was sent to the Principal Investigators of each of the active REU Sites. Over 70% of the surveys were returned with the requested information from about 50 to 60 sites each year. The internet is the most widely used mechanism to recruit participants, with personal communication as the second most important recruiting tool. The admissions rate for REU Sites in Geosciences varies from less than 10% to 50%, with the majority of participants being rising seniors and juniors. Many of the participants come from non-PhD granting institutions. Among the participants, gender distribution varies by discipline, with ocean sciences having a large majority of women and earth sciences having a majority of men. Regarding ethnic diversity, the REU Sites reflect the difficulty of attracting diverse students into Geosciences as a discipline; a large majority of participants are Caucasian and Asian students. Furthermore, participants from minority-serving institutions and community colleges constitute a small percentage of those taking part in these research experiences. The enrichment activities are very similar across the REU Sites, and mimic activities common to the scientific community, including intellectual exchange of ideas (lab meetings, seminars, and professional meetings

  10. Genetic modifiers of comatose mutations in Drosophila: insights into neuronal NSF (N-ethylmaleimide-sensitive fusion factor) functions.

    Science.gov (United States)

    Sanyal, Subhabrata; Krishnan, K S

    2012-09-01

    By the middle of the 20th century, development of powerful genetic approaches had ensured that the fruit fly would remain a model organism of choice for genetic and developmental studies. But in the 1970s, a few pioneering groups turned their attention to the prospect of using the fly for neurophysiological experiments. They proposed that in a poikilothermic organism such as Drosophila, temperature-sensitive or "ts" mutations in proteins that controlled nerve function would translate to a "ts" paralytic phenotype. This was by no means an obvious or even a likely assumption. However, following directed screens these groups soon reported dramatic demonstrations of reversible ts paralysis in fly mutants. Resultantly, these "simple" experiments led to the isolation of a number of conditional mutations including shibire, paralytic, and comatose. All have since been cloned and have enabled deep mechanistic insights into synaptic transmission and nerve conduction. comatose (comt) mutations, for example, were found to map to missense changes in dNSF1, a neuron-specific fly homolog of mammalian NSF (N-ethylmaleimide-sensitive fusion factor). Studies on comt were also some of the first to discriminate between nuanced models of NSF function during presynaptic transmitter release that have since been borne out by experiments in multiple preparations. Here, the authors present an overview of NSF function as it is understood today, with an emphasis on contributions from Drosophila beginning with experiments carried out by Obaid Siddiqi in the Benzer laboratory. The authors also outline initial results from a genetic screen for phenotypic modifiers of comt that hold the promise of further elucidating NSF function at the synapse. Over the years, the neuromuscular system of Drosophila has served as a uniquely accessible model to unravel mechanisms underlying synaptic transmission. To this day, ts paralysis remains one of the most emphatic demonstrations of nerve function in an

  11. International perspective on nanotechnology papers, patents, and NSF awards (2000-2016)

    Science.gov (United States)

    Zhu, Hongyi; Jiang, Shan; Chen, Hsinchun; Roco, Mihail C.

    2017-11-01

    This paper presents the development of nanotechnology between 2000 and 2016 as reflected in the Web of Science papers, United States Patent and Trademark Office (USPTO), World International Property Organization (WIPO) patents, and National Science Foundation (NSF) awards, with a special reference to the United States (US), European Union (EU27), P.R. China, Japan, and South Korea. The field of nanotechnology is branching out into novel scientific and technology platforms, and it is increasingly difficult to separate foundational nanoscale components from divergent application areas. The average global growth rate has been sustained at about 15% for both papers and patents in the selected interval. The growth rates among regions are non-uniform. P.R. China and South Korea have increased faster in both the numbers and quality of their scientific publications, and currently P.R. China has the largest volume of nanotechnology publications and South Korea the most publications per capita in the field of nanotechnology. The US, EU27, and Japan are maintaining leadership in the upstream, better cited, conceptual components of nanotechnology research and development.

  12. Cybersecurity Implications for Industry, Academia, and Parents: A Qualitative Case Study in NSF STEM Education

    Science.gov (United States)

    Stevenson, Gregory V.

    Rationale: Former President Barack Obama's 3.9 trillion for the 2015 fiscal year budget request included a 2.9 billion investment in Science, Technology, Engineering and Math (STEM) education. Research then showed that the national spending for cybersecurity has exceeded $10.7 billion in the 2015 fiscal year. Nonetheless, the number of cyberattacks has risen year after year since 2012, potentially due to the lack of education and training in cybersecurity. Methodology: A qualitative case study research was conducted to explore and investigate the lived professional experiences of experts from San Antonio Texas whose efforts were aligned to increase the number of qualified cybersecurity professionals. To qualify the organizational needs for cybersecurity professionals, the study gathered expert opinions by surveying human resource managers pertaining to the needs of cybersecurity education. To refine and further validate data collection efforts, the study involved researcher observations and a survey of a narrow cohort to perform analytic induction to eliminate bias and exhaust the exploratory research (Maxwell, 2005). Result: The findings of the case study will: 1) help augment the importance of cybersecurity education in pre-kindergarten through 12th grade, 2) be utilized as a single guide for school leaders in the process of developing cybersecurity education strategies, and 3) in the longer term, be used by the National Sciences Foundation (NSF) as an effective model to institute cybersecurity education practices nationwide and thereby reduce the existing trouble of the nation by criminal cyber actors.

  13. Retraction RETRACTION of "Association between polymorphisms in the XRCC1 gene and the risk of non-small cell lung cancer", by Han JC, Zhang YJ and Li XD - Genet. Mol. Res. 14 (4): 12888-12893 (2015).

    Science.gov (United States)

    Han, J C; Zhang, Y J; Li, X D

    2016-10-07

    The retracted article is: Han JC, Zhang YJ and Li XD (2015). Association between polymorphisms in the XRCC1 gene and the risk of non-small cell lung cancer. Genet. Mol. Res. 14: 12888-12893. The GMR editorial staff was alerted about this article (received on May 3, 2015; accepted on August 18, 2015) published on October 21, 2015 (DOI: 10.4238/2015.October.21.9) that was found to be substantially similar to the publication of "Association of XRCC1 gene polymorphisms with risk of non-small cell lung cancer" (received on January 25, 2015; accepted on March 23, 2015; e-published on April 1, 2015) by Kang et al., published in the International Journal of Clinical Experimental Pathology 8 (4): 4171-4176. The authors were aware of the Kang et al.'s paper, since they cite it several times in the manuscript published in GMR. Some of the language is similar between the two manuscripts, but what is the most concerning is that several of the tables in the papers are nearly identical. Tables 2 and 3 are exactly identical between the two articles, suggesting that the publication in GMR was plagiarized from the publication in the International Journal of Clinical Experimental Pathology. The Publisher and Editor decided to retract these articles in accordance with the recommendations of the Committee on Publication Ethics (COPE). After a thorough investigation, we have strong reason to believe that the peer review process was failure and, after review and contacting the authors, the editors of Genetics and Molecular Research decided to retract the article. The authors and their institutions were advised of this serious breach of ethics.

  14. A flexible WLAN receiver

    NARCIS (Netherlands)

    Schiphorst, Roelof; Hoeksema, F.W.; Slump, Cornelis H.

    2003-01-01

    Flexible radio receivers are also called Software Defined Radios (SDRs) [1], [2]. The focus of our SDR project [3] is on designing the front end, from antenna to demodulation in bits, of a °exible, multi-standard WLAN receiver. We try to combine an instance of a (G)FSK receiver (Bluetooth) with an

  15. Sustaining professional development gains after the NSF-CCLI grant ends

    Science.gov (United States)

    Grove, K.; Dekens, P. S.; Dempsey, D. P.

    2012-12-01

    At San Francisco State University we aimed to transform our freshman-level courses in geology, oceanography, and meteorology using funding from a NSF-CCLI grant—"Creating an academic community to foster curiosity and discovery in introductory Geoscience classes" (2010-2012). In addition to creating a new laboratory space and new laboratory materials, we focused on the professional development of graduate teaching assistants (GTAs) and other departmental instructors. Previously, GTAs were given little support to gain teaching skills and present interesting labs, and there was little communication among the various instructors of the introductory courses. We aimed to change the tenor of the department by infusing discussions about effective teaching practices into the daily academic lives of faculty and GTAs and by creating institutional structures to ensure that innovations continued beyond the life of the NSF grant. We entitled this function of the department a Teaching and Learning Community (TLC). An essential element of the TLC, and the institutionalization of project activities, was to create a new graduate seminar course—"Our Dynamic Classroom"—that is offered every semester. This course was created to provide a mechanism for instructors to meet each week to discuss aspects of teaching pedagogy and to share classroom experiences. Each week a GTA or faculty member leads the discussion. Typical weekly topics include: what is inquiry-based learning, understanding students' misconceptions, teaching quantitative skills, what is the affective domain, improving students' writing skills. In response to participant feedback, the course now focuses more on the needs of specific instructors teaching specific courses. For example, in Spring 2012, seminar participants identified several issues GTAs were encountering, such as students failing to read instructions for labs before executing them, and some members of small collaborative groups not actively participating

  16. The ASM-NSF Biology Scholars Program: An Evidence-Based Model for Faculty Development.

    Science.gov (United States)

    Chang, Amy L; Pribbenow, Christine M

    2016-05-01

    The American Society for Microbiology (ASM) established its ASM-NSF (National Science Foundation) Biology Scholars Program (BSP) to promote undergraduate education reform by 1) supporting biologists to implement evidence-based teaching practices, 2) engaging life science professional societies to facilitate biologists' leadership in scholarly teaching within the discipline, and 3) participating in a teaching community that fosters disciplinary-level science, technology, engineering, and mathematics (STEM) reform. Since 2005, the program has utilized year-long residency training to provide a continuum of learning and practice centered on principles from the scholarship of teaching and learning (SoTL) to more than 270 participants ("scholars") from biology and multiple other disciplines. Additionally, the program has recruited 11 life science professional societies to support faculty development in SoTL and discipline-based education research (DBER). To identify the BSP's long-term outcomes and impacts, ASM engaged an external evaluator to conduct a study of the program's 2010-2014 scholars (n = 127) and society partners. The study methods included online surveys, focus groups, participant observation, and analysis of various documents. Study participants indicate that the program achieved its proposed goals relative to scholarship, professional society impact, leadership, community, and faculty professional development. Although participants also identified barriers that hindered elements of their BSP participation, findings suggest that the program was essential to their development as faculty and provides evidence of the BSP as a model for other societies seeking to advance undergraduate science education reform. The BSP is the longest-standing faculty development program sponsored by a collective group of life science societies. This collaboration promotes success across a fragmented system of more than 80 societies representing the life sciences and helps

  17. Internships and UNAVCO: Training the Future Geoscience Workforce Through the NSF GAGE Facility

    Science.gov (United States)

    Morris, A. R.; MacPherson-Krutsky, C. C.; Charlevoix, D. J.; Bartel, B. A.

    2015-12-01

    Facilities are uniquely positioned to both serve a broad, national audience and provide unique workforce experience to students and recent graduates. Intentional efforts dedicated to broadening participation in the future geoscience workforce at the NSF GAGE (Geodesy Advancing Geosciences and EarthScope) Facility operated by UNAVCO, are designed to meet the needs of the next generation of students and professionals. As a university-governed consortium facilitating research and education in the geosciences, UNAVCO is well-situated to both prepare students for geoscience technical careers and advanced research positions. Since 1998, UNAVCO has offered over 165 student assistant or intern positions including engineering, data services, education and outreach, and business support. UNAVCO offers three formal programs: the UNAVCO Student Internship Program (USIP), Research Experiences in Solid Earth Science for Students (RESESS), and the Geo-Launchpad (GLP) internship program. Interns range from community college students up through graduate students and recent Masters graduates. USIP interns gain real-world work experience in a professional setting, collaborate with teams toward a common mission, and contribute their knowledge, skills, and abilities to the UNAVCO community. RESESS interns conduct authentic research with a scientist in the Front Range area as well as participate in a structured professional development series. GLP students are in their first 2 years of higher education and work alongside UNAVCO technical staff gaining valuable work experience and insight into the logistics of supporting scientific research. UNAVCO's efforts in preparing the next generation of scientists largely focuses on increasing diversity in the geosciences, whether continuing academic studies or moving into the workforce. To date, well over half of our interns and student assistants come from backgrounds historically underrepresented in the geosciences. Over 80% of former interns

  18. The ASM-NSF Biology Scholars Program: An Evidence-Based Model for Faculty Development

    Directory of Open Access Journals (Sweden)

    Amy L. Chang

    2016-05-01

    Full Text Available The American Society for Microbiology (ASM established its ASM-NSF (National Science Foundation Biology Scholars Program (BSP to promote undergraduate education reform by 1 supporting biologists to implement evidence-based teaching practices, 2 engaging life science professional societies to facilitate biologists’ leadership in scholarly teaching within the discipline, and 3 participating in a teaching community that fosters disciplinary-level science, technology, engineering, and mathematics (STEM reform. Since 2005, the program has utilized year-long residency training to provide a continuum of learning and practice centered on principles from the scholarship of teaching and learning (SoTL to more than 270 participants (“scholars” from biology and multiple other disciplines. Additionally, the program has recruited 11 life science professional societies to support faculty development in SoTL and discipline-based education research (DBER. To identify the BSP’s long-term outcomes and impacts, ASM engaged an external evaluator to conduct a study of the program’s 2010­–2014 scholars (n = 127 and society partners. The study methods included online surveys, focus groups, participant observation, and analysis of various documents. Study participants indicate that the program achieved its proposed goals relative to scholarship, professional society impact, leadership, community, and faculty professional development. Although participants also identified barriers that hindered elements of their BSP participation, findings suggest that the program was essential to their development as faculty and provides evidence of the BSP as a model for other societies seeking to advance undergraduate science education reform. The BSP is the longest-standing faculty development program sponsored by a collective group of life science societies. This collaboration promotes success across a fragmented system of more than 80 societies representing the life

  19. NSF-Sponsored Summit on the Future of Undergraduate Geoscience Education: outcomes

    Science.gov (United States)

    Mosher, S.

    2014-12-01

    The NSF-sponsored Summit on the Future of Undergraduate Geoscience Education made major progress toward developing a collective community vision for the geosciences. A broad spectrum of the geoscience education community, ~200 educators from research universities/four and two year colleges, focused on preparation of undergraduates for graduate school and future geoscience careers, pedagogy, use of technology, broadening participation/retention of underrepresented groups, and preparation of K-12 science teachers. Participants agreed that key concepts, competencies and skills learned throughout the curriculum were more important than specific courses. Concepts included understanding Earth as complex, dynamic system, deep time, evolution of life, natural resources, energy, hazards, hydrogeology, surface processes, Earth materials and structure, and climate change. Skills/competencies included ability to think spatially and temporally, reason inductively and deductively, make and use indirect observations, engage in complex open, coupled systems thinking, and work with uncertainty, non-uniqueness, and incompleteness, as well as critical thinking, problem solving, communication, and ability to think like a scientist and continue to learn. Successful ways of developing these include collaborative, integrative projects involving teams, interdisciplinary projects, fieldwork and research experiences, as well as flipped classrooms and integration and interactive use of technology, including visualization, simulation, modeling and analysis of real data. Wider adoption of proven, effective best practices is our communities' main pedagogical challenge, and we focused on identifying implementation barriers. Preparation of future teachers in introductory and general geoscience courses by incorporating Next Generation Science Standards and using other sciences/math to solve real world geoscience problems should help increase diversity and number of future geoscientists and

  20. Transforming Research in Oceanography through Education, Ethnography and Rapidly Evolving Technologies: An NSF-INSPIRE project.

    Science.gov (United States)

    German, C. R.; Croff Bell, K. L.; Pallant, A.; Mirmalek, Z.; Jasanoff, S.; Rajan, K.

    2014-12-01

    This paper will discuss a new NSF-INSPIRE project that brings together research conducted in the fields of Ocean Sciences, Education & Human Resources and Computer and Information Science & Engineering. Specifically, our objective is to investigate new methods by which telepresence can be used to conduct cutting edge research and provide authentic educational experiences to undergraduate students, remotely. We choose to conduct this research in an Oceanographic context for two reasons: first with the move toward smaller research ships in the national Oceanographic research fleet, we anticipate that access to berth space at sea will continue to be at a premium. Any component of traditional oceanographic research that can be ported to shore without loss of effectiveness would be of immediate benefit to the Ocean Sciences. Equally, however, we argue that any improvements to work place and/or education practices that we can identify while delivering research and education from the bottom of the deep ocean should be readily mappable to any other scientific or engineering activities that seek to make use of telepresence in less extreme remote environments. Work on our TREET project, to-date, has included recruitment of 6 early career scientists keen to take advantage of the research opportunity provided, together with two senior science mentors with experience using Telepresence and a cohort of undergraduate students at three of the ECS partner Universities, spanning 4 time zones across the continental US. Following a 12-week synchronous on-line seminar series taught in Spring-Summer 2014, the entire team joined together at the Inner Space Center in Sept-Oct 2014 to participate, virtually, in a cruise of research and exploration to the Kick'Em Jenny underwater volcano and adjacent cold seep sites, conducted by the Ocean Exploration Trust's ROV Hercules aboard the Exploration Vessel Nautilus. Our presentation will include preliminary results from that cruise.

  1. Institutional transformation: An analysis of change initiatives at NSF ADVANCE institutions

    Science.gov (United States)

    Plummer, Ellen W.

    The purpose of this study was to examine how institutional culture promoted or impeded the implementation of round one and two NSF ADVANCE initiatives designed to improve academic climates for women in science and engineering. This study was conducted in two phases. In phase one, 35 participants from 18 institutions were interviewed to answer three research questions. Participants identified a policy, process, or program designed to improve academic cultures for women in science and engineering fields. Participants also identified strategies that promoted the implementation of these efforts, and discussed factors that impeded these efforts. In phase two, site visits were conducted at two institutions to answer a fourth research question. How did institutional culture shape the design and implementation of faculty search processes? Policies, processes, and programs were implemented by participants at the institutional, departmental, and individual levels and included family friendly and dual career policies at the institutional level, improved departmental faculty search and climate improvement processes, and mentoring programs and training for department heads at the individual level. Communication and leadership strategies were key to the successful implementation of policies, processes, and programs designed to achieve institutional transformation. Communication strategies involved shaping change messages to reach varied audiences often with the argument that change efforts would improve the climate for everyone not just women faculty members. Administrative and faculty leaders from multiple levels proved important to change efforts. Institutional Transformation Institutional culture shaped initiatives to improve faculty search processes. Faculty leaders in both settings used data to persuade faculty members of the need for change. At one site, data that included national availability information was critical to advancing the change agenda. At the other site

  2. Highly Sensitive Optical Receivers

    CERN Document Server

    Schneider, Kerstin

    2006-01-01

    Highly Sensitive Optical Receivers primarily treats the circuit design of optical receivers with external photodiodes. Continuous-mode and burst-mode receivers are compared. The monograph first summarizes the basics of III/V photodetectors, transistor and noise models, bit-error rate, sensitivity and analog circuit design, thus enabling readers to understand the circuits described in the main part of the book. In order to cover the topic comprehensively, detailed descriptions of receivers for optical data communication in general and, in particular, optical burst-mode receivers in deep-sub-µm CMOS are presented. Numerous detailed and elaborate illustrations facilitate better understanding.

  3. When fast and slow interfaces grow together: Connection to the half-space problem of the Kardar-Parisi-Zhang class

    Science.gov (United States)

    Ito, Yasufumi; Takeuchi, Kazumasa A.

    2018-04-01

    We study height fluctuations of interfaces in the (1 +1 ) -dimensional Kardar-Parisi-Zhang (KPZ) class, growing at different speeds in the left half and the right half of space. Carrying out simulations of the discrete polynuclear growth model with two different growth rates, combined with the standard setting for the droplet, flat, and stationary geometries, we find that the fluctuation properties at and near the boundary are described by the KPZ half-space problem developed in the theoretical literature. In particular, in the droplet case, the distribution at the boundary is given by the largest-eigenvalue distribution of random matrices in the Gaussian symplectic ensemble, often called the GSE Tracy-Widom distribution. We also characterize crossover from the full-space statistics to the half-space one, which arises when the difference between the two growth speeds is small.

  4. 论张洁小说女性三种形态的身体%On the Three Forms of Female Body in Zhang Jie’s Novels

    Institute of Scientific and Technical Information of China (English)

    黄晓娟; 邱慧婷

    2016-01-01

    Zhang Jie,the only female writer having been twice awarded the Mao Dun Literature Awards, has been focusing on the destiny of female character and broadening the way of portraying females. Different forms of female body presented in her novel represented her reflection on female destiny and patriarchal culture in different dimensions.Her exploring,constructing and pursuing of the ideal female personality can be found in her analysis of different forms of female body such as the feminized body,the suffering body and the masculinized body,which can also be contributed to the understanding of Zhang Jie’s literary world and her reflections on the harmony between the sexes.%张洁是中国文坛唯一两次获得“茅盾文学奖”的女作家,一直致力于女性命运的关照和女性写作视野的开拓。她小说中的女性呈现出不同的身体形态,代表着作者对女性命运和男权文化不同维度的思考。通过雌化的身体、承受的身体和雄化的身体等不同形态身体的探析,可以发现张洁对理想女性人格积极探寻和建构追求的过程,有助于深入认知张洁的文学世界及其对两性和谐的思考。

  5. Delphi Accounts Receivable Module -

    Data.gov (United States)

    Department of Transportation — Delphi accounts receivable module contains the following data elements, but are not limited to customer information, cash receipts, line of accounting details, bill...

  6. NSF GK-12 Fellows as Mentors for K-12 Teachers Participating in Field Research Experiences

    Science.gov (United States)

    Ellins, K.; Perry, E.

    2005-12-01

    by the GK-12 Fellows was important in helping teachers transfer components of a challenging field research experience to their students. Participating research scientists were able to convey the importance of their science to a wider audience. NSF GK-12 Fellows gained valuable experience in communicating scientific knowledge and field skills to K-12 teachers and students, became more knowledgeable about K-12 science education and were exposed to advances in pedagogy.

  7. The Arctic Cooperative Data and Information System: Data Management Support for the NSF Arctic Research Program (Invited)

    Science.gov (United States)

    Moore, J.; Serreze, M. C.; Middleton, D.; Ramamurthy, M. K.; Yarmey, L.

    2013-12-01

    The NSF funds the Advanced Cooperative Arctic Data and Information System (ACADIS), url: (http://www.aoncadis.org/). It serves the growing and increasingly diverse data management needs of NSF's arctic research community. The ACADIS investigator team combines experienced data managers, curators and software engineers from the NSIDC, UCAR and NCAR. ACADIS fosters scientific synthesis and discovery by providing a secure long-term data archive to NSF investigators. The system provides discovery and access to arctic related data from this and other archives. This paper updates the technical components of ACADIS, the implementation of best practices, the value of ACADIS to the community and the major challenges facing this archive for the future in handling the diverse data coming from NSF Arctic investigators. ACADIS provides sustainable data management, data stewardship services and leadership for the NSF Arctic research community through open data sharing, adherence to best practices and standards, capitalizing on appropriate evolving technologies, community support and engagement. ACADIS leverages other pertinent projects, capitalizing on appropriate emerging technologies and participating in emerging cyberinfrastructure initiatives. The key elements of ACADIS user services to the NSF Arctic community include: data and metadata upload; support for datasets with special requirements; metadata and documentation generation; interoperability and initiatives with other archives; and science support to investigators and the community. Providing a self-service data publishing platform requiring minimal curation oversight while maintaining rich metadata for discovery, access and preservation is challenging. Implementing metadata standards are a first step towards consistent content. The ACADIS Gateway and ADE offer users choices for data discovery and access with the clear objective of increasing discovery and use of all Arctic data especially for analysis activities

  8. Management and Stewardship of Airborne Observational Data for the NSF/NCAR HIAPER (GV) and NSF/NCAR C-130 at the National Center for Atmospheric Research (NCAR) Earth Observing Laboratory (EOL)

    Science.gov (United States)

    Aquino, J.

    2014-12-01

    The National Science Foundation (NSF) provides the National Center for Atmospheric Research (NCAR) Earth Observing Laboratory (EOL) funding for the operation, maintenance and upgrade of two research aircraft: the NSF/NCAR High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) Gulfstream V and the NSF/NCAR Hercules C-130. A suite of in-situ and remote sensing airborne instruments housed at the EOL Research Aviation Facility (RAF) provide a basic set of measurements that are typically deployed on most airborne field campaigns. In addition, instruments to address more specific research requirements are provided by collaborating participants from universities, industry, NASA, NOAA or other agencies. The data collected are an important legacy of these field campaigns. A comprehensive metadata database and integrated cyber-infrastructure, along with a robust data workflow that begins during the field phase and extends to long-term archival (current aircraft data holdings go back to 1967), assures that: all data and associated software are safeguarded throughout the data handling process; community standards of practice for data stewardship and software version control are followed; simple and timely community access to collected data and associated software tools are provided; and the quality of the collected data is preserved, with the ultimate goal of supporting research and the reproducibility of published results. The components of this data system to be presented include: robust, searchable web access to data holdings; reliable, redundant data storage; web-based tools and scripts for efficient creation, maintenance and update of data holdings; access to supplemental data and documentation; storage of data in standardized data formats; comprehensive metadata collection; mature version control; human-discernable storage practices; and procedures to inform users of changes. In addition, lessons learned, shortcomings, and desired upgrades

  9. Retraction RETRACTION of "Tumor necrosis factor alpha gene -308G>A polymorphism association with the risk of esophageal cancer in a Han Chinese population" by H. Zhao, H.W. Zhang, T. Zhang and X.M. Gu - Genet. Mol. Res. 15 (2): gmr.15025866 DOI: http://dx.doi.org/10.4238/gmr.15025866.

    Science.gov (United States)

    Zhao, H; Zhang, H W; Zhang, T; Gu, X M

    2016-10-07

    The retracted article is: Zhao H, Zhang HW, Zhang T and Gu XM (2016). Tumor necrosis factor alpha gene -308G>A polymorphism association with the risk of esophageal cancer in a Han Chinese population. Genet. Mol. Res. 15: gmr.15025866. Two major concerns were found in this article. Firstly, it was found to be substantially equal to the article "Tumor necrosis factor-alpha gene -308G > A polymorphism alters the risk of hepatocellular carcinoma in a Han Chinese population" published in the Diagnostic Pathology Diagnostic Pathology (2014) 9: 199, by Feng et al.; licensee BioMed Central. 2014 - DOI: 10.1186/s13000-014-0199-3. Secondly, the authors do not discuss limitations of their approaches in the discussion. The discussion is largely an elaboration of the literature in the introduction part. However, even in that context, the discussion does not appropriately review the literature and there are frequent references to conclusions that are not supported by the cited literature. The GMR editorial staff was alerted and after a thorough investigation, there is strong reason to believe that the peer review process was failure. Also, after review and contacting the authors, the editors of Genetics and Molecular Research decided to retract this article in accordance with the recommendations of the Committee on Publication Ethics (COPE). The authors and their institutions were advised of this serious breach of ethics.

  10. Solar energy receiver

    Science.gov (United States)

    Schwartz, Jacob

    1978-01-01

    An improved long-life design for solar energy receivers provides for greatly reduced thermally induced stress and permits the utilization of less expensive heat exchanger materials while maintaining receiver efficiencies in excess of 85% without undue expenditure of energy to circulate the working fluid. In one embodiment, the flow index for the receiver is first set as close as practical to a value such that the Graetz number yields the optimal heat transfer coefficient per unit of pumping energy, in this case, 6. The convective index for the receiver is then set as closely as practical to two times the flow index so as to obtain optimal efficiency per unit mass of material.

  11. Cryogenic microwave channelized receiver

    International Nuclear Information System (INIS)

    Rauscher, C.; Pond, J.M.; Tait, G.B.

    1996-01-01

    The channelized receiver being presented demonstrates the use of high temperature superconductor technology in a microwave system setting where superconductor, microwave-monolithic-integrated-circuit, and hybrid-integrated-circuit components are united in one package and cooled to liquid-nitrogen temperatures. The receiver consists of a superconducting X-band four-channel demultiplexer with 100-MHz-wide channels, four commercial monolithically integrated mixers, and four custom-designed hybrid-circuit detectors containing heterostructure ramp diodes. The composite receiver unit has been integrated into the payload of the second-phase NRL high temperature superconductor space experiment (HTSSE-II). Prior to payload assembly, the response characteristics of the receiver were measured as functions of frequency, temperature, and drive levels. The article describes the circuitry, discusses the key issues related to design and implementation, and summarizes the experimental results

  12. Alexandrite Lidar Receiver

    National Research Council Canada - National Science Library

    Wilkerson, Thomas

    2000-01-01

    ...". The chosen vendor, Orca Photonics, In. (Redmond, WA), in close collaboration with USU personnel, built a portable, computerized lidar system that not only is suitable as a receiver for a near IR alexandrite laser, but also contains an independent Nd...

  13. Receiver Gain Modulation Circuit

    Science.gov (United States)

    Jones, Hollis; Racette, Paul; Walker, David; Gu, Dazhen

    2011-01-01

    A receiver gain modulation circuit (RGMC) was developed that modulates the power gain of the output of a radiometer receiver with a test signal. As the radiometer receiver switches between calibration noise references, the test signal is mixed with the calibrated noise and thus produces an ensemble set of measurements from which ensemble statistical analysis can be used to extract statistical information about the test signal. The RGMC is an enabling technology of the ensemble detector. As a key component for achieving ensemble detection and analysis, the RGMC has broad aeronautical and space applications. The RGMC can be used to test and develop new calibration algorithms, for example, to detect gain anomalies, and/or correct for slow drifts that affect climate-quality measurements over an accelerated time scale. A generalized approach to analyzing radiometer system designs yields a mathematical treatment of noise reference measurements in calibration algorithms. By treating the measurements from the different noise references as ensemble samples of the receiver state, i.e. receiver gain, a quantitative description of the non-stationary properties of the underlying receiver fluctuations can be derived. Excellent agreement has been obtained between model calculations and radiometric measurements. The mathematical formulation is equivalent to modulating the gain of a stable receiver with an externally generated signal and is the basis for ensemble detection and analysis (EDA). The concept of generating ensemble data sets using an ensemble detector is similar to the ensemble data sets generated as part of ensemble empirical mode decomposition (EEMD) with exception of a key distinguishing factor. EEMD adds noise to the signal under study whereas EDA mixes the signal with calibrated noise. It is mixing with calibrated noise that permits the measurement of temporal-functional variability of uncertainty in the underlying process. The RGMC permits the evaluation of EDA by

  14. NSF- and SNARE-mediated membrane fusion is required for nuclear envelope formation and completion of nuclear pore complex assembly in Xenopus laevis egg extracts.

    Science.gov (United States)

    Baur, Tina; Ramadan, Kristijan; Schlundt, Andreas; Kartenbeck, Jürgen; Meyer, Hemmo H

    2007-08-15

    Despite the progress in understanding nuclear envelope (NE) reformation after mitosis, it has remained unclear what drives the required membrane fusion and how exactly this is coordinated with nuclear pore complex (NPC) assembly. Here, we show that, like other intracellular fusion reactions, NE fusion in Xenopus laevis egg extracts is mediated by SNARE proteins that require activation by NSF. Antibodies against Xenopus NSF, depletion of NSF or the dominant-negative NSF(E329Q) variant specifically inhibited NE formation. Staging experiments further revealed that NSF was required until sealing of the envelope was completed. Moreover, excess exogenous alpha-SNAP that blocks SNARE function prevented membrane fusion and caused accumulation of non-flattened vesicles on the chromatin surface. Under these conditions, the nucleoporins Nup107 and gp210 were fully recruited, whereas assembly of FxFG-repeat-containing nucleoporins was blocked. Together, we define NSF- and SNARE-mediated membrane fusion events as essential steps during NE formation downstream of Nup107 recruitment, and upstream of membrane flattening and completion of NPC assembly.

  15. 'Chaos' in superregenerative receivers

    International Nuclear Information System (INIS)

    Commercon, Jean-Claude; Badard, Robert

    2005-01-01

    The superregenerative principle has been known since the early 1920s. The circuit is extremely simple and extremely sensitive. Today, superheterodyne receivers generally supplant superregenerative receivers in most applications because there are several undesirable characteristics: poor selectivity, reradiation, etc. Superregenerative receivers undergo a revival in recent papers for wireless systems, where low cost and very low power consumption are relevant: house/building meters (such as water, energy, gas counter), personal computer environment (keyboard, mouse), etc. Another drawback is the noise level which is higher than that of a well-designed superheterodyne receiver; without an antenna input signal, the output of the receiver hears in an earphone as a waterfall noise; this sound principally is the inherent input noise amplified and detected by the circuit; however, when the input noise is negligible with respect of an antenna input signal, we are faced to an other source of 'noise' self-generated by the superregenerative working. The main objective of this paper concerns this self-generated noise coming from an exponential growing followed by a re-injection process for which the final state is a function of the phase of the input signal

  16. NSF Workshop Report: Discovering General Principles of Nervous System Organization by Comparing Brain Maps across Species

    OpenAIRE

    Striedter, Georg F.; Belgard, T. Grant; Chen, Chun-Chun; Davis, Fred P.; Finlay, Barbara L.; Güntürkün, Onur; Hale, Melina E.; Harris, Julie A.; Hecht, Erin E.; Hof, Patrick R.; Hofmann, Hans A.; Holland, Linda Z.; Iwaniuk, Andrew N.; Jarvis, Erich D.; Karten, Harvey J.

    2014-01-01

    Efforts to understand nervous system structure and function have received new impetus from the federal Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative. Comparative analyses can contribute to this effort by leading to the discovery of general principles of neural circuit design, information processing, and gene-structure-function relationships that are not apparent from studies on single species. We here propose to extend the comparative approach to nervous sys...

  17. Solar thermal central receivers

    International Nuclear Information System (INIS)

    Vant-Hull, L.L.

    1993-01-01

    Market issues, environmental impact, and technology issues related to the Solar Central Receiver concept are addressed. The rationale for selection of the preferred configuration and working fluid are presented as the result of a joint utility-industry analysis. A $30 million conversion of Solar One to an external molten salt receiver would provide the intermediate step to a commercial demonstration plant. The first plant in this series could produce electricity at 11.2 cents/kWhr and the seventh at 8.2 cents/kWhr, completely competitive with projected costs of new utility plants in 1992

  18. Wideband CMOS receivers

    CERN Document Server

    Oliveira, Luis

    2015-01-01

    This book demonstrates how to design a wideband receiver operating in current mode, in which the noise and non-linearity are reduced, implemented in a low cost single chip, using standard CMOS technology.  The authors present a solution to remove the transimpedance amplifier (TIA) block and connect directly the mixer’s output to a passive second-order continuous-time Σ∆ analog to digital converter (ADC), which operates in current-mode. These techniques enable the reduction of area, power consumption, and cost in modern CMOS receivers.

  19. Effects of heavy metals and light levels on the biosynthesis of carotenoids and fatty acids in the macroalgae Gracilaria tenuistipitata (var. liui Zhang & Xia

    Directory of Open Access Journals (Sweden)

    Ernani Pinto

    2011-04-01

    Full Text Available We present here the effect of heavy metals and of different light intensities on the biosynthesis of fatty acids and pigments in the macroalga Gracilaria tenuistipitata (var. liui Zhang & Xia. In order to verify the fatty acid content, gas chromatography with flame ionization detection (GC-FID was employed. Pigments (major carotenoids and chlorophyl-a were monitored by liquid chromatography with diode array detection (HPLC-DAD. Cultures of G. tenuistipitata were exposed to cadmium (Cd2+, 200 ppb and copper (Cu2+, 200 ppb, as well as to different light conditions (low light: 100 µmol.photons.m-2.s-1, or high light: 1000 µmol.photons.m-2.s-1. Cd2+ and Cu2+ increased the saturated and monounsaturated fatty acid content [14:0, 16:0, 18:0, 18:1 (n-7 and 18:1 (n-9] and all major pigments (violaxanthin, antheraxanthin, lutein, zeaxanthin, chlorophyll-a and β-carotene. Both heavy metals decreased the levels of polyunsaturated fatty acids (PUFA [18:2 (n-6, 18:3 (n-6, 18:5 (n-4, 20:4 (n-6, 20:5 (n-3, 22:6 (n-3]. G. tenuistipitata cultures were exposed to high light intensity for five days and no statistically significant differences were observed in the content of fatty acids. On the other hand, the levels of pigments rose markedly for chlorophyll-a and all of the carotenoids studied.

  20. High-Resolution Digitization of the Film Archive of SPRI/NSF/TUD Radar Sounding of the Antarctic Ice Sheet

    Science.gov (United States)

    Schroeder, D. M.; Dowdeswell, J. A.; Mackie, E. J.; Vega, K. I.; Emmons, J. R.; Winstein, K.; Bingham, R. G.; Benham, T. J.

    2017-12-01

    The airborne radio echo sounding data collected during the SPRI/NSF/TUD surveys of the Antarctic Ice Sheet in the late nineteen sixties and early seventies were recorded on a combination of 35mm and super-8 mm black-and-white optical film. These data represent the oldest extant continent-scale geophysical observations of ice thickness, internal layering and conditions beneath the Antarctic Ice Sheet. As such, when compared with modern radar sounding observations, they offer a unique opportunity to investigate temporal changes in ice sheet conditions across half a century. However, the storage of these data on film, paper-prints, and scans of those prints have made such comparison at the full radiometric and geometric resolution of the data difficult. To address this challenge, we utilized a state-of-the-art high-resolution Hollywood film scanning system to digitize the entire SPRI/NSF/TUD optical film archive. This has resulted in over two million digital images with information at the full spatial and brightness-level resolution of the original film. We present the process and results of this scanning as well as the current progress in formatting, registering, and positioning these data for release and use by the wider radio glaciological community. We also discuss the glaciological insights enabled by this effort.

  1. Increasing Access for Economically Disadvantaged Students: The NSF/CSEM & S-STEM Programs at Louisiana State University

    Science.gov (United States)

    Wilson, Zakiya S.; Iyengar, Sitharama S.; Pang, Su-Seng; Warner, Isiah M.; Luces, Candace A.

    2012-10-01

    Increasing college degree attainment for students from disadvantaged backgrounds is a prominent component of numerous state and federal legislation focused on higher education. In 1999, the National Science Foundation (NSF) instituted the "Computer Science, Engineering, and Mathematics Scholarships" (CSEMS) program; this initiative was designed to provide greater access and support to academically talented students from economically disadvantaged backgrounds. Originally intended to provide financial support to lower income students, this NSF program also advocated that additional professional development and advising would be strategies to increase undergraduate persistence to graduation. This innovative program for economically disadvantaged students was extended in 2004 to include students from other disciplines including the physical and life sciences as well as the technology fields, and the new name of the program was Scholarships for Science, Technology, Engineering and Mathematics (S-STEM). The implementation of these two programs in Louisiana State University (LSU) has shown significant and measurable success since 2000, making LSU a Model University in providing support to economically disadvantaged students within the STEM disciplines. The achievement of these programs is evidenced by the graduation rates of its participants. This report provides details on the educational model employed through the CSEMS/S-STEM projects at LSU and provides a path to success for increasing student retention rates in STEM disciplines. While the LSU's experience is presented as a case study, the potential relevance of this innovative mentoring program in conjunction with the financial support system is discussed in detail.

  2. Receiver gain function: the actual NMR receiver gain

    OpenAIRE

    Mo, Huaping; Harwood, John S.; Raftery, Daniel

    2010-01-01

    The observed NMR signal size depends on the receiver gain parameter. We propose a receiver gain function to characterize how much the raw FID is amplified by the receiver as a function of the receiver gain setting. Although the receiver is linear for a fixed gain setting, the actual gain of the receiver may differ from what the gain setting suggests. Nevertheless, for a given receiver, we demonstrate that the receiver gain function can be calibrated. Such a calibration enables accurate compar...

  3. Campus Projects Receiving "Earmarks."

    Science.gov (United States)

    Schonberger, Benjamin

    1991-01-01

    Specific campus projects that Congress has directed federal agencies to support this year at over 120 colleges and universities are listed. The agencies neither requested support nor sponsored merit-based competitions for the awards. In some cases, the institutions have a history of receiving special federal treatment. (MSE)

  4. Zhang Enzhao: A Fallen Banker

    Institute of Scientific and Technical Information of China (English)

    Xiao Long

    2006-01-01

    @@ In China, bank governors belong to one of the celebrity business,men clubs that enjoy great power.Entrepreneurs are always happy to know them, as a good relationship with the bankers can normally bring advantages when applying for loans. The close ties between entrepreneurs and bankers also generate risks, however, and the banking industry has proven to be one of the most risk-laden places in terms of corruptions and fund embezzlements.

  5. Aasia: missioon "Hiina" / Xiaotian Zhang

    Index Scriptorium Estoniae

    Zhang, Xiaotian

    2011-01-01

    Hiina ja Põhjamaade ärisuhete pikk ajalugu. Eesti, Soome, Rootsi ja Hiina koostööprogramm BENCH (Beneficial Business Relations between the Central Baltic Region and China, 2007-2013). Diagramm "Soome, Rootsi ja Eesti Kaubavahetus Hiinaga"

  6. LRRK2 phosphorylates pre-synaptic N-ethylmaleimide sensitive fusion (NSF) protein enhancing its ATPase activity and SNARE complex disassembling rate.

    Science.gov (United States)

    Belluzzi, Elisa; Gonnelli, Adriano; Cirnaru, Maria-Daniela; Marte, Antonella; Plotegher, Nicoletta; Russo, Isabella; Civiero, Laura; Cogo, Susanna; Carrion, Maria Perèz; Franchin, Cinzia; Arrigoni, Giorgio; Beltramini, Mariano; Bubacco, Luigi; Onofri, Franco; Piccoli, Giovanni; Greggio, Elisa

    2016-01-13

    Lrrk2, a gene linked to Parkinson's disease, encodes a large scaffolding protein with kinase and GTPase activities implicated in vesicle and cytoskeletal-related processes. At the presynaptic site, LRRK2 associates with synaptic vesicles through interaction with a panel of presynaptic proteins. Here, we show that LRRK2 kinase activity influences the dynamics of synaptic vesicle fusion. We therefore investigated whether LRRK2 phosphorylates component(s) of the exo/endocytosis machinery. We have previously observed that LRRK2 interacts with NSF, a hexameric AAA+ ATPase that couples ATP hydrolysis to the disassembling of SNARE proteins allowing them to enter another fusion cycle during synaptic exocytosis. Here, we demonstrate that NSF is a substrate of LRRK2 kinase activity. LRRK2 phosphorylates full-length NSF at threonine 645 in the ATP binding pocket of D2 domain. Functionally, NSF phosphorylated by LRRK2 displays enhanced ATPase activity and increased rate of SNARE complex disassembling. Substitution of threonine 645 with alanine abrogates LRRK2-mediated increased ATPase activity. Given that the most common Parkinson's disease LRRK2 G2019S mutation displays increased kinase activity, our results suggest that mutant LRRK2 may impair synaptic vesicle dynamics via aberrant phosphorylation of NSF.

  7. From the NSF: The National Science Foundation’s Investments in Broadening Participation in Science, Technology, Engineering, and Mathematics Education through Research and Capacity Building

    Science.gov (United States)

    James, Sylvia M.; Singer, Susan R.

    2016-01-01

    The National Science Foundation (NSF) has a long history of investment in broadening participation (BP) in science, technology, engineering, and mathematics (STEM) education. A review of past NSF BP efforts provides insights into how the portfolio of programs and activities has evolved and the broad array of innovative strategies that has been used to increase the participation of groups underrepresented in STEM, including women, minorities, and persons with disabilities. While many are familiar with these long-standing programmatic efforts, BP is also a key component of NSF’s strategic plans, has been highlighted in National Science Board reports, and is the focus of ongoing outreach efforts. The majority of familiar BP programs, such as the Louis Stokes Alliances for Minority Participation (now 25 years old), are housed in the Directorate for Education and Human Resources. However, fellowship programs such as the Graduate Research Fellowships and Postdoctoral Research Fellowships under the Directorate for Biological Sciences (and parallel directorates in other STEM disciplines) are frequently used to address underrepresentation in STEM disciplines. The FY2016 and FY2017 budget requests incorporate funding for NSF INCLUDES, a new cross-agency BP initiative that will build on prior successes while addressing national BP challenges. NSF INCLUDES invites the use of innovative approaches for taking evidence-based best practices to scale, ushering in a new era in NSF BP advancement. PMID:27587853

  8. Assessing the Resolution Adaptability of the Zhang-McFarlane Cumulus Parameterization With Spatial and Temporal Averaging: RESOLUTION ADAPTABILITY OF ZM SCHEME

    Energy Technology Data Exchange (ETDEWEB)

    Yun, Yuxing [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing China; Fan, Jiwen [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA; Xiao, Heng [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA; Zhang, Guang J. [Scripps Institution of Oceanography, University of California, San Diego CA USA; Ghan, Steven J. [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA; Xu, Kuan-Man [NASA Langley Research Center, Hampton VA USA; Ma, Po-Lun [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA; Gustafson, William I. [Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland WA USA

    2017-11-01

    Realistic modeling of cumulus convection at fine model resolutions (a few to a few tens of km) is problematic since it requires the cumulus scheme to adapt to higher resolution than they were originally designed for (~100 km). To solve this problem, we implement the spatial averaging method proposed in Xiao et al. (2015) and also propose a temporal averaging method for the large-scale convective available potential energy (CAPE) tendency in the Zhang-McFarlane (ZM) cumulus parameterization. The resolution adaptability of the original ZM scheme, the scheme with spatial averaging, and the scheme with both spatial and temporal averaging at 4-32 km resolution is assessed using the Weather Research and Forecasting (WRF) model, by comparing with Cloud Resolving Model (CRM) results. We find that the original ZM scheme has very poor resolution adaptability, with sub-grid convective transport and precipitation increasing significantly as the resolution increases. The spatial averaging method improves the resolution adaptability of the ZM scheme and better conserves the total transport of moist static energy and total precipitation. With the temporal averaging method, the resolution adaptability of the scheme is further improved, with sub-grid convective precipitation becoming smaller than resolved precipitation for resolution higher than 8 km, which is consistent with the results from the CRM simulation. Both the spatial distribution and time series of precipitation are improved with the spatial and temporal averaging methods. The results may be helpful for developing resolution adaptability for other cumulus parameterizations that are based on quasi-equilibrium assumption.

  9. A combined physiological and proteomic approach to reveal lactic-acid-induced alterations in Lactobacillus casei Zhang and its mutant with enhanced lactic acid tolerance.

    Science.gov (United States)

    Wu, Chongde; Zhang, Juan; Chen, Wei; Wang, Miao; Du, Guocheng; Chen, Jian

    2012-01-01

    Lactobacillus casei has traditionally been recognized as a probiotic and frequently used as an adjunct culture in fermented dairy products, where acid stress is an environmental condition commonly encountered. In the present study, we carried out a comparative physiological and proteomic study to investigate lactic-acid-induced alterations in Lactobacillus casei Zhang (WT) and its acid-resistant mutant. Analysis of the physiological data showed that the mutant exhibited 33.8% higher glucose phosphoenolpyruvate:sugar phosphotransferase system activity and lower glycolytic pH compared with the WT under acidic conditions. In addition, significant differences were detected in both cells during acid stress between intracellular physiological state, including intracellular pH, H(+)-ATPase activity, and intracellular ATP pool. Comparison of the proteomic data based on 2D-DIGE and i-TRAQ indicated that acid stress invoked a global change in both strains. The mutant protected the cells against acid damage by regulating the expression of key proteins involved in cellular metabolism, DNA replication, RNA synthesis, translation, and some chaperones. Proteome results were validated by Lactobacillus casei displaying higher intracellular aspartate and arginine levels, and the survival at pH 3.3 was improved 1.36- and 2.10-fold by the addition of 50-mM aspartate and arginine, respectively. To our knowledge, this is the first demonstration that aspartate may be involved in acid tolerance in Lactobacillus casei. Results presented here may help us understand acid resistance mechanisms and help formulate new strategies to enhance the industrial applications of this species.

  10. Digital Receiver Phase Meter

    Science.gov (United States)

    Marcin, Martin; Abramovici, Alexander

    2008-01-01

    The software of a commercially available digital radio receiver has been modified to make the receiver function as a two-channel low-noise phase meter. This phase meter is a prototype in the continuing development of a phase meter for a system in which radiofrequency (RF) signals in the two channels would be outputs of a spaceborne heterodyne laser interferometer for detecting gravitational waves. The frequencies of the signals could include a common Doppler-shift component of as much as 15 MHz. The phase meter is required to measure the relative phases of the signals in the two channels at a sampling rate of 10 Hz at a root power spectral density measurements in laser metrology of moving bodies. To illustrate part of the principle of operation of the phase meter, the figure includes a simplified block diagram of a basic singlechannel digital receiver. The input RF signal is first fed to the input terminal of an analog-to-digital converter (ADC). To prevent aliasing errors in the ADC, the sampling rate must be at least twice the input signal frequency. The sampling rate of the ADC is governed by a sampling clock, which also drives a digital local oscillator (DLO), which is a direct digital frequency synthesizer. The DLO produces samples of sine and cosine signals at a programmed tuning frequency. The sine and cosine samples are mixed with (that is, multiplied by) the samples from the ADC, then low-pass filtered to obtain in-phase (I) and quadrature (Q) signal components. A digital signal processor (DSP) computes the ratio between the Q and I components, computes the phase of the RF signal (relative to that of the DLO signal) as the arctangent of this ratio, and then averages successive such phase values over a time interval specified by the user.

  11. The NSF Undergraduate ALFALFA Team: Partnering with Arecibo Observatory to Offer Undergraduate and Faculty Extragalactic Radio Astronomy Research Opportunities

    Science.gov (United States)

    Ribaudo, Joseph; Koopmann, Rebecca A.; Haynes, Martha P.; Balonek, Thomas J.; Cannon, John M.; Coble, Kimberly A.; Craig, David W.; Denn, Grant R.; Durbala, Adriana; Finn, Rose; Hallenbeck, Gregory L.; Hoffman, G. Lyle; Lebron, Mayra E.; Miller, Brendan P.; Crone-Odekon, Mary; O'Donoghue, Aileen A.; Olowin, Ronald Paul; Pantoja, Carmen; Pisano, Daniel J.; Rosenberg, Jessica L.; Troischt, Parker; Venkatesan, Aparna; Wilcots, Eric M.; ALFALFA Team

    2017-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) is a consortium of 20 institutions across the US and Puerto Rico, founded to promote undergraduate research and faculty development within the extragalactic ALFALFA HI blind survey project and follow-up programs. The objective of the UAT is to provide opportunities for its members to develop expertise in the technical aspects of observational radio spectroscopy, its associated data analysis, and the motivating science. Partnering with Arecibo Observatory, the UAT has worked with more than 280 undergraduates and 26 faculty to date, offering 8 workshops onsite at Arecibo (148 undergraduates), observing runs at Arecibo (69 undergraduates), remote observing runs on campus, undergraduate research projects based on Arecibo science (120 academic year and 185 summer projects), and presentation of results at national meetings such as the AAS (at AAS229: Ball et al., Collova et al., Davis et al., Miazzo et al., Ruvolo et al, Singer et al., Cannon et al., Craig et al., Koopmann et al., O'Donoghue et al.). 40% of the students and 45% of the faculty participants have been women and members of underrepresented groups. More than 90% of student alumni are attending graduate school and/or pursuing a career in STEM. 42% of those pursuing graduate degrees in Physics or Astronomy are women.In this presentation, we summarize the UAT program and the current research efforts of UAT members based on Arecibo science, including multiwavelength followup observations of ALFALFA sources, the UAT Collaborative Groups Project, the Survey of HI in Extremely Low-mass Dwarfs (SHIELD), and the Arecibo Pisces-Perseus Supercluster Survey (APPSS). This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, AST-121105, and AST-1637339.

  12. From the NSF: The National Science Foundation's Investments in Broadening Participation in Science, Technology, Engineering, and Mathematics Education through Research and Capacity Building.

    Science.gov (United States)

    James, Sylvia M; Singer, Susan R

    The National Science Foundation (NSF) has a long history of investment in broadening participation (BP) in science, technology, engineering, and mathematics (STEM) education. A review of past NSF BP efforts provides insights into how the portfolio of programs and activities has evolved and the broad array of innovative strategies that has been used to increase the participation of groups underrepresented in STEM, including women, minorities, and persons with disabilities. While many are familiar with these long-standing programmatic efforts, BP is also a key component of NSF's strategic plans, has been highlighted in National Science Board reports, and is the focus of ongoing outreach efforts. The majority of familiar BP programs, such as the Louis Stokes Alliances for Minority Participation (now 25 years old), are housed in the Directorate for Education and Human Resources. However, fellowship programs such as the Graduate Research Fellowships and Postdoctoral Research Fellowships under the Directorate for Biological Sciences (and parallel directorates in other STEM disciplines) are frequently used to address underrepresentation in STEM disciplines. The FY2016 and FY2017 budget requests incorporate funding for NSF INCLUDES, a new cross-agency BP initiative that will build on prior successes while addressing national BP challenges. NSF INCLUDES invites the use of innovative approaches for taking evidence-based best practices to scale, ushering in a new era in NSF BP advancement. © 2016 S. M. James and S. R. Singer. CBE—Life Sciences Education © 2016 The American Society for Cell Biology. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

  13. Analysis of Liu Zhiji Theory of Historians' and Zhang Xuecheng' s Cultivation Comparison%刘知几与章学诚的史家修养理论比较研究

    Institute of Scientific and Technical Information of China (English)

    董传岭

    2012-01-01

    Liu Zhiji and Zhang Xuecheng are famous for their historical theory in ancient China. They all put forward the theory of historian historians' cultivation which has important sense to improve historian self-cultivation and historical development. Liu Zhiji argued that historians should have "ability, learning, knowledge", Zhang Xuecheng further put forward historian moral on the basis of the Liu Zhiji~s theory,enriched and developed the theory of the historians~ cultiva- tion. They all emphasize "ability,learning, knowledge", Liu Zhiji emphasize "knowledge" mostly, but Zhang Xuecheng relied heavily on "moral". Comparison and analysis on Liu Zhiji and Zhang Xuecheng's theory of self-cultivation,not only enable us to find their theories difference, under- standing the theory deeply, but also has certain enlightenment function on the contemporary historiography development.%我国古代史学理论大家刘知几、章学诚均提出了有关史家修养的理论,刘知几认为史家应具备"才、学、识",章学诚在继承刘知几史家修养理论的基础上,进一步提出"史德",丰富和发展了史家修养理论。刘知几、章学诚均重视"才、学、识",但刘知几最重"史识",章学诚尤重"史德"。比较和分析二者的史家修养理论,不仅能使我们发现他们理论的异同,深刻理解史家修养理论,而且对当今史学发展也具有一定的启示功用。

  14. The University of Minnesota Morris - N.S.F. REU Program: Twenty years of encouraging women to participate in the Geological Sciences

    Science.gov (United States)

    Cotter, J. F.

    2009-12-01

    support network that has developed among the UMM-REU alumni. Participants read publications by past UMM-REU researchers, they are encouraged to contact alumni for information and advice, and alumni are invited back to mentor participants, provide insights and interact socially. UMM-REU reunions are held on a regular basis. The UMM-REU network is growing. Ninety-three women from 30 institutions have participated in the UMM-REU program. Participants have published four papers and 75 abstracts. Initial career trajectories are good. Of the 80 UMM-REU alumni that have (to date) received a bachelor degree: 29 went directly into careers in the sciences or teaching and 46 enrolled in graduate (9 have completed Ph.D.s). Over the long term results are also good. Of the 93 UMM-REU participants only 13 are not now pursuing degrees or working in careers in the sciences. Research for this study was funded by a grant from the N.S.F.-R.E.U. Program, including NSF-EAR 9820249 and NSF-EAR 0640575.

  15. Pressure difference receiving ears

    DEFF Research Database (Denmark)

    Michelsen, Axel; Larsen, Ole Næsbye

    2007-01-01

    Directional sound receivers are useful for locating sound sources, and they can also partly compensate for the signal degradations caused by noise and reverberations. Ears may become inherently directional if sound can reach both surfaces of the eardrum. Attempts to understand the physics...... of the eardrum. The mere existence of sound transmission to the inner surface does not ensure a useful directional hearing, since a proper amplitude and phase relationship must exist between the sounds acting on the two surfaces of the eardrum. The gain of the sound pathway must match the amplitude and phase...... of the sounds at the outer surfaces of the eardrums, which are determined by diffraction and by the arrival time of the sound, that is by the size and shape of the animal and by the frequency of sound. Many users of hearing aids do not obtain a satisfactory improvement of their ability to localize sound sources...

  16. Solar thermal energy receiver

    Science.gov (United States)

    Baker, Karl W. (Inventor); Dustin, Miles O. (Inventor)

    1992-01-01

    A plurality of heat pipes in a shell receive concentrated solar energy and transfer the energy to a heat activated system. To provide for even distribution of the energy despite uneven impingement of solar energy on the heat pipes, absence of solar energy at times, or failure of one or more of the heat pipes, energy storage means are disposed on the heat pipes which extend through a heat pipe thermal coupling means into the heat activated device. To enhance energy transfer to the heat activated device, the heat pipe coupling cavity means may be provided with extensions into the device. For use with a Stirling engine having passages for working gas, heat transfer members may be positioned to contact the gas and the heat pipes. The shell may be divided into sections by transverse walls. To prevent cavity working fluid from collecting in the extensions, a porous body is positioned in the cavity.

  17. Real Time Data for Seismology at the IRIS Data Management Center, AN Nsf-Sponsored Facility

    Science.gov (United States)

    Benson, R. B.; Ahern, T. K.; Trabant, C.; Weertman, B. R.; Casey, R.; Stromme, S.; Karstens, R.

    2012-12-01

    the Internet, small or large, can now share data, and today, the IRIS DMC receives nearly all of its seismic data from regional and international networks in real time. We will show that this evolution to managing real time data has provided the framework for accomplishing many important benefits that illustrate that open, real time data should be the goal of every observatory operation and can provide: - Faster (therefore cost and data saving) quality control, - Data products that highlight source properties and provide teachable moments - Data delivery to regional or national networks around the globe for immediate access for monitoring. -Use in teaching the public, providing streaming data to museums, schools, etc.

  18. Providing Web Interfaces to the NSF EarthScope USArray Transportable Array

    Science.gov (United States)

    Vernon, Frank; Newman, Robert; Lindquist, Kent

    2010-05-01

    Since April 2004 the EarthScope USArray seismic network has grown to over 850 broadband stations that stream multi-channel data in near real-time to the Array Network Facility in San Diego. Providing secure, yet open, access to real-time and archived data for a broad range of audiences is best served by a series of platform agnostic low-latency web-based applications. We present a framework of tools that mediate between the world wide web and Boulder Real Time Technologies Antelope Environmental Monitoring System data acquisition and archival software. These tools provide comprehensive information to audiences ranging from network operators and geoscience researchers, to funding agencies and the general public. This ranges from network-wide to station-specific metadata, state-of-health metrics, event detection rates, archival data and dynamic report generation over a station's two year life span. Leveraging open source web-site development frameworks for both the server side (Perl, Python and PHP) and client-side (Flickr, Google Maps/Earth and jQuery) facilitates the development of a robust extensible architecture that can be tailored on a per-user basis, with rapid prototyping and development that adheres to web-standards. Typical seismic data warehouses allow online users to query and download data collected from regional networks, without the scientist directly visually assessing data coverage and/or quality. Using a suite of web-based protocols, we have recently developed an online seismic waveform interface that directly queries and displays data from a relational database through a web-browser. Using the Python interface to Datascope and the Python-based Twisted network package on the server side, and the jQuery Javascript framework on the client side to send and receive asynchronous waveform queries, we display broadband seismic data using the HTML Canvas element that is globally accessible by anyone using a modern web-browser. We are currently creating

  19. Integrating Research and Extension for the Nsf-Reu Program in Water Resources

    Science.gov (United States)

    Judge, J.; Migliaccio, K.; Gao, B.; Shukla, S.; Ehsani, R.; McLamore, E.

    2011-12-01

    Providing positive and meaningful research experiences to students in their undergraduate years is critical for motivating them to pursue advanced degrees or research careers in science and engineering. Such experiences not only offer training for the students in problem solving and critical thinking via hands-on projects, but also offer excellent mentoring and recruiting opportunities for the faculty advisors. The goal of the Research Experience for Undergraduates (REU) Program in the Agricultural and Biological Engineering Department (ABE) at the University of Florida (UF) is to provide eight undergraduate students a unique opportunity to conduct research in water resources using interdisciplinary approaches, integrating research and extension. The students are selected from diverse cultural and educational backgrounds. The eight-week REU Program utilizes the extensive infrastructure of UF - Institute of Food and Agricultural Sciences (IFAS) through the Research and Education Centers (RECs). Two students are paired to participate in their own project under the direct supervision of one of the four research mentors. Four of the eight students are located at the main campus, in Gainesville, Fl, and four remaining students are located off-campus, at the RECs, where some of the ABE faculty are located. The students achieve an enriching cohort experience through social networking, daily blogs, and weekly video conferences to share their research and other REU experiences. The students are co-located during the Orientation week and also during the 5-day Florida Waters Tour. Weekly group meetings and guest lectures are conducted via synchronously through video conferencing. The integration of research and extension is naturally achieved through the projects at the RECs, the guest lectures, Extension workshops, and visits to the Water Management Districts in Florida. In the last two years of the Program, we have received over 80 applicants, from four-year and advanced

  20. Balancing Academic Teaching, Research, and Service: a Paradigm Emerging from NSF-TUES Sponsored Project Experiences

    Science.gov (United States)

    De Paor, D. G.

    2012-12-01

    training. Our policy has lead to the emergence of a paradigm for academic inquiry. We develop and test learning resources to cover the gamut of earth and planetary sciences, which we view as the science of four-dimensional place-time. Our learning objects emphasize the role of visualization in promoting understanding. If these resources fail to achieve desired outcomes, we look into their design but also examine our own understanding of topics, since instructor misconceptions are an obvious hindrance to learning. Redesign of visualizations may improve outcomes but sometimes the problem lies not with presentation or content knowledge, but rather with gaps in the science itself. Thus teaching and public outreach can become vehicles for the discovery of fertile research questions. Dissemination of a policy that eastablishes teaching and service as bridges leading to research products has the potential to generate transformative changes in the education that graduate students deliver and thus the education that undergraduate students receive.

  1. CERN apprentice receives award

    CERN Multimedia

    2008-01-01

    Another CERN apprentice has received an award for the quality of his work. Stéphane Küng (centre), at the UIG ceremony last November, presided over by Geneva State Councillor Pierre-François Unger, Head of the Department of Economics and Health. Electronics technician Stéphane Küng was honoured in November by the Social Foundation of the Union Industrielle Genevoise (UIG) as one of Geneva’s eight best apprentices in the field of mechatronics. The 20-year-old Genevan obtained his Federal apprentice’s certificate (Certificat fédéral de capacité - CFC) in June 2007, achieving excellent marks in his written tests at the Centre d’Enseignement Professionnel Technique et Artisanal (CEPTA). Like more than 200 youngsters before him, Stéphane Küng spent part of his four-year sandwich course working at CERN, where he followed many practical training courses and gained valuable hands-on experience in various technical groups and labs. "It’ always very gr...

  2. ENVIRONMENTAL TECHNOLOGY VERIFICATION: JOINT (NSF-EPA) VERIFICATION STATEMENT AND REPORT HYDRO COMPLIANCE MANAGEMENT, INC. HYDRO-KLEEN FILTRATION SYSTEM, 03/07/WQPC-SWP, SEPTEMBER 2003

    Science.gov (United States)

    Verification testing of the Hydro-Kleen(TM) Filtration System, a catch-basin filter designed to reduce hydrocarbon, sediment, and metals contamination from surface water flows, was conducted at NSF International in Ann Arbor, Michigan. A Hydro-Kleen(TM) system was fitted into a ...

  3. Cornell's LEPP, CHESS research labs expected to get $124 million in NSF funding for elementary particle and X-ray research

    CERN Multimedia

    2003-01-01

    "Cornell University will be awarded up to $124 million over the next five years by the National Science Foundation (NSF) to support research at the Laboratory for Elementary-Particle Physics (LEPP) and the Cornell High Energy Synchrotron Source (CHESS), a national user facility" (1 page).

  4. Building a Community of Scholars: One University's Story of Students Engaged in Learning Science, Mathematics, and Engineering through a NSF S-STEM Grant--Part II

    Science.gov (United States)

    Kalevitch, Maria; Maurer, Cheryl; Badger, Paul; Holdan, Greg; Sirinterlikci, Arif

    2015-01-01

    The School of Engineering, Mathematics, and Science (SEMS) at Robert Morris University (RMU) was awarded a five-year grant from the National Science Foundation (NSF) to fund scholarships to 21 academically talented but financially challenged students majoring in the disciplines of science, technology, engineering, and mathematics (STEM). Each…

  5. GNSS Software Receiver for UAVs

    DEFF Research Database (Denmark)

    Olesen, Daniel Madelung; Jakobsen, Jakob; von Benzon, Hans-Henrik

    2016-01-01

    This paper describes the current activities of GPS/GNSS Software receiver development at DTU Space. GNSS Software receivers have received a great deal of attention in the last two decades and numerous implementations have already been presented. DTU Space has just recently started development of ...... of our own GNSS software-receiver targeted for mini UAV applications, and we will in in this paper present our current progress and briefly discuss the benefits of Software Receivers in relation to our research interests....

  6. Report on the SNL/NSF International Workshop on Joint Mechanics, Arlington, Virginia, 16-18 October 2006.

    Energy Technology Data Exchange (ETDEWEB)

    Ewins, David J. (Imperial College, London England, UK); Bergman, Lawrence A. (University of Illinois, Urbana, IL); Segalman, Daniel Joseph

    2007-11-01

    The NSF/SNL joint mechanics workshop, held in Arlington, Virginia, 16-18 October, 2006, attempted to assess the current state of the art for modeling joint mechanics for the purpose of structural dynamics calculation, to identify the underlying physics issues that must be addressed to advance the field, and to propose a path forward. Distinguished participants from several countries representing research communities that focus on very different length and time scales identified multiple challenges in bridging those scales. Additionally, two complementary points of view were developed for addressing those challenges. The first approach - the 'bottom-up' perspective - attempts to bridge scales by starting from the smallest length scale and working up. The other approach starts at the length scale of application and attempts to deduce mechanics at smaller length scales through reconciliation with laboratory observation. Because interface physics is a limiting element of predictive simulation in defense and transportation, this issue will be of continuing importance for the foreseeable future.

  7. Solar advanced internal film receiver

    International Nuclear Information System (INIS)

    Torre Cabezas, M. de la

    1990-01-01

    In a Solar Central Internal Film Receiver, the heat absorbing fluid (a molten nitrate salt) flows in a thin film down over the non illuminated side of an absorber panel. Since the molten salt working fluid is not contained in complicated tube manifolds, the receiver design is simples than a conventional tube type-receiver resulting in a lower cost and a more reliable receiver. The Internal Film Receiver can be considered as an alternative to the Direct Absorption Receiver, in the event that the current problems of the last one can not be solved. It also describes here the test facility which will be used for its solar test, and the test plans foreseen. (Author) 17 refs

  8. Communications receivers principles and design

    CERN Document Server

    Rohde, Ulrich L; Zahnd, Hans

    2017-01-01

    This thoroughly updated guide offers comprehensive explanations of the science behind today’s radio receivers along with practical guidance on designing, constructing, and maintaining real-world communications systems. You will explore system planning, antennas and antenna coupling, amplifiers and gain control, filters, mixers, demodulation, digital communication, and the latest software defined radio (SDR) technology. Written by a team of telecommunication experts, Communications Receivers: Principles and Design, Fourth Edition, features technical illustrations, schematic diagrams, and detailed examples. Coverage includes: • Basic radio considerations • Radio receiver characteristics • Receiver system planning • Receiver implementation considerations • RF and baseband techniques for Software-Defined Radios • Transceiver SDR considerations • Antennas and antenna coupling • Mixers • Frequency sources and control • Ancillary receiver circuits • Performance measurement

  9. Stability of heterodyne terahertz receivers

    NARCIS (Netherlands)

    Kooi, J.W.; Baselmans, J.J.A.; Baryshev, A.; Schieder, R.; Hajenius, M.; Gao, J.R.; Klapwijk, T.M.; Voronov, B.; Gol'tsman, G.

    2006-01-01

    In this paper we discuss the stability of heterodyne terahertz receivers based on small volume NbN phonon cooled hot electron bolometers (HEBs). The stability of these receivers can be broken down in two parts: the intrinsic stability of the HEB mixer and the stability of the local oscillator (LO)

  10. High Gain Advanced GPS Receiver

    National Research Council Canada - National Science Library

    Brown, Alison; Zhang, Gengsheng

    2006-01-01

    NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to enable up to eight GPS satellites to be tracked, each with up to 10 dBi of additional antenna gain over a conventional receiver solution...

  11. UWB delay and multiply receiver

    Energy Technology Data Exchange (ETDEWEB)

    Dallum, Gregory E.; Pratt, Garth C.; Haugen, Peter C.; Romero, Carlos E.

    2013-09-10

    An ultra-wideband (UWB) delay and multiply receiver is formed of a receive antenna; a variable gain attenuator connected to the receive antenna; a signal splitter connected to the variable gain attenuator; a multiplier having one input connected to an undelayed signal from the signal splitter and another input connected to a delayed signal from the signal splitter, the delay between the splitter signals being equal to the spacing between pulses from a transmitter whose pulses are being received by the receive antenna; a peak detection circuit connected to the output of the multiplier and connected to the variable gain attenuator to control the variable gain attenuator to maintain a constant amplitude output from the multiplier; and a digital output circuit connected to the output of the multiplier.

  12. Customizable Digital Receivers for Radar

    Science.gov (United States)

    Moller, Delwyn; Heavey, Brandon; Sadowy, Gregory

    2008-01-01

    Compact, highly customizable digital receivers are being developed for the system described in 'Radar Interferometer for Topographic Mapping of Glaciers and Ice Sheets' (NPO-43962), NASA Tech Briefs, Vol. 31, No. 7 (August 2007), page 72. The receivers are required to operate in unison, sampling radar returns received by the antenna elements in a digital beam-forming (DBF) mode. The design of these receivers could also be adapted to commercial radar systems. At the time of reporting the information for this article, there were no commercially available digital receivers capable of satisfying all of the operational requirements and compact enough to be mounted directly on the antenna elements. A provided figure depicts the overall system of which the digital receivers are parts. Each digital receiver includes an analog-to-digital converter (ADC), a demultiplexer (DMUX), and a field-programmable gate array (FPGA). The ADC effects 10-bit band-pass sampling of input signals having frequencies up to 3.5 GHz. The input samples are demultiplexed at a user-selectable rate of 1:2 or 1:4, then buffered in part of the FPGA that functions as a first-in/first-out (FIFO) memory. Another part of the FPGA serves as a controller for the ADC, DMUX, and FIFO memory and as an interface between (1) the rest of the receiver and (2) a front-panel data port (FPDP) bus, which is an industry-standard parallel data bus that has a high data-rate capability and multichannel configuration suitable for DBF. Still other parts of the FPGA in each receiver perform signal-processing functions. The digital receivers can be configured to operate in a stand-alone mode, or in a multichannel mode as needed for DBF. The customizability of the receiver makes it applicable to a broad range of system architectures. The capability for operation of receivers in either a stand-alone or a DBF mode enables the use of the receivers in an unprecedentedly wide variety of radar systems.

  13. HIGH-EFFICIENCY INFRARED RECEIVER

    Directory of Open Access Journals (Sweden)

    A. K. Esman

    2016-01-01

    Full Text Available Recent research and development show promising use of high-performance solid-state receivers of the electromagnetic radiation. These receivers are based on the low-barrier Schottky diodes. The approach to the design of the receivers on the basis of delta-doped low-barrier Schottky diodes with beam leads without bias is especially actively developing because for uncooled receivers of the microwave radiation these diodes have virtually no competition. The purpose of this work is to improve the main parameters and characteristics that determine the practical relevance of the receivers of mid-infrared electromagnetic radiation at the operating room temperature by modifying the electrodes configuration of the diode and optimizing the distance between them. Proposed original design solution of the integrated receiver of mid-infrared radiation on the basis of the low-barrier Schottky diodes with beam leads allows to effectively adjust its main parameters and characteristics. Simulation of the electromagnetic characteristics of the proposed receiver by using the software package HFSS with the basic algorithm of a finite element method which implemented to calculate the behavior of electromagnetic fields on an arbitrary geometry with a predetermined material properties have shown that when the inner parts of the electrodes of the low-barrier Schottky diode is performed in the concentric elliptical convex-concave shape, it can be reduce the reflection losses to -57.75 dB and the standing wave ratio to 1.003 while increasing the directivity up to 23 at a wavelength of 6.09 μm. At this time, the rounded radii of the inner parts of the anode and cathode electrodes are equal 212 nm and 318 nm respectively and the gap setting between them is 106 nm. These parameters will improve the efficiency of the developed infrared optical-promising and electronic equipment for various purposes intended for work in the mid-infrared wavelength range. 

  14. GIVING AND RECEIVING CONSTRUCTIVE FEEDBACK

    Directory of Open Access Journals (Sweden)

    Ірина Олійник

    2015-05-01

    Full Text Available The article scrutinizes the notion of feedback applicable in classrooms where team teaching is provided. The experience of giving and receiving feedback has been a good practice in cooperation between a U.S. Peace Corps volunteer and a Ukrainian counterpart. Giving and receiving feedback is an effective means of classroom observation that provides better insight into the process of teaching a foreign language. The article discusses the stages of feedback and explicates the notion of sharing experience between two teachers working simultaneously in the same classroom. The guidelines for giving and receiving feedback have been provided as well as the most commonly used vocabulary items have been listed. It has been proved that mutual feedback leads to improving teaching methods and using various teaching styles and techniques.

  15. Receiver-exciter controller design

    Science.gov (United States)

    Jansma, P. A.

    1982-01-01

    A description of the general design of both the block 3 and block 4 receiver-exciter controllers for the Deep Space Network (DSN) Mark IV-A System is presented along with the design approach. The controllers are designed to enable the receiver-exciter subsystem (RCV) to be configured, calibrated, initialized and operated from a central location via high level instructions. The RECs are designed to be operated under the control of the DMC subsystem. The instructions are in the form of standard subsystem blocks (SSBs) received via the local area network (LAN). The centralized control provided by RECs and other DSCC controllers in Mark IV-A is intended to reduce DSN operations costs from the Mark III era.

  16. Stability of heterodyne terahertz receivers

    OpenAIRE

    Kooi, J. W.; Baselmans, J. J. A.; Baryshev, A.; Schieder, R.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Voronov, B.; Gol'tsman, G.

    2006-01-01

    In this paper we discuss the stability of heterodyne terahertz receivers based on small volume NbN phonon cooled hot electron bolometers (HEBs). The stability of these receivers can be broken down in two parts: the intrinsic stability of the HEB mixer and the stability of the local oscillator (LO) signal injection scheme. Measurements show that the HEB mixer stability is limited by gain fluctuations with a 1/f spectral distribution. In a 60 MHz noise bandwidth this results in an Allan varian...

  17. Femtosecond Photon-Counting Receiver

    Science.gov (United States)

    Krainak, Michael A.; Rambo, Timothy M.; Yang, Guangning; Lu, Wei; Numata, Kenji

    2016-01-01

    An optical correlation receiver is described that provides ultra-precise distance and/or time/pulse-width measurements even for weak (single photons) and short (femtosecond) optical signals. A new type of optical correlation receiver uses a fourth-order (intensity) interferometer to provide micron distance measurements even for weak (single photons) and short (femtosecond) optical signals. The optical correlator uses a low-noise-integrating detector that can resolve photon number. The correlation (range as a function of path delay) is calculated from the variance of the photon number of the difference of the optical signals on the two detectors. Our preliminary proof-of principle data (using a short-pulse diode laser transmitter) demonstrates tens of microns precision.

  18. Scintillation-Hardened GPS Receiver

    Science.gov (United States)

    Stephens, Donald R.

    2015-01-01

    CommLargo, Inc., has developed a scintillation-hardened Global Positioning System (GPS) receiver that improves reliability for low-orbit missions and complies with NASA's Space Telecommunications Radio System (STRS) architecture standards. A software-defined radio (SDR) implementation allows a single hardware element to function as either a conventional radio or as a GPS receiver, providing backup and redundancy for platforms such as the International Space Station (ISS) and high-value remote sensing platforms. The innovation's flexible SDR implementation reduces cost, weight, and power requirements. Scintillation hardening improves mission reliability and variability. In Phase I, CommLargo refactored an open-source GPS software package with Kalman filter-based tracking loops to improve performance during scintillation and also demonstrated improved navigation during a geomagnetic storm. In Phase II, the company generated a new field-programmable gate array (FPGA)-based GPS waveform to demonstrate on NASA's Space Communication and Navigation (SCaN) test bed.

  19. Communication received from South Africa

    International Nuclear Information System (INIS)

    1984-02-01

    The document reproduces the press release with a statement by Dr. J.W.L. de Villiers, Executive Chairman of the Atomic Energy Corporation of South Africa Limited, issued on 31 January 1984 and included in the letter received by the Director General of the IAEA from the Resident Representative of South Africa to the Agency on 31 January 1984. This statement refers to the transfer of nuclear material equipment and technology by South Africa to other countries and the Non-Proliferation Treaty

  20. Absorption Efficiency of Receiving Antennas

    DEFF Research Database (Denmark)

    Andersen, Jørgen Bach; Frandsen, Aksel

    2005-01-01

    A receiving antenna with a matched load will always scatter some power. This paper sets an upper and a lower bound on the absorption efficiency (absorbed power over sum of absorbed and scattered powers), which lies between 0 and 100% depending on the directivities of the antenna and scatter...... patterns. It can approach 100% as closely as desired, although in practice this may not be an attractive solution. An example with a small endfire array of dipoles shows an efficiency of 93%. Several examples of small conical horn antennas are also given, and they all have absorption efficiencies less than...

  1. Adapting and Bending the Portal to the Public: Evaluation of an NSF-Funded Science Communication Model for UNAVCO's Geoscience Summer Internships

    Science.gov (United States)

    Dutilly, E.; Charlevoix, D. J.; Bartel, B. A.

    2017-12-01

    UNAVCO is a National Science Foundation (NSF) facility specializing in geodesy. As part of its education and outreach work, it operates annual summer internships. In 2016, UNAVCO joined the Portal to the Public (PoP) network and the PoP model was adapted and bent to provide science communication professional development for summer interns. PoP is one way that UNAVCO invests in and trains future generations of geoscientists. The NSF-funded PoP initiative and its network, PoPNet, is a premier outreach framework connecting scientists and public audiences for over a decade. PoPNet is a network of sixty organizations committed to using the PoP method to engage the public in face-to-face interactions with practicing scientists. The PoP initiative provides professional development to scientists focused on best practices in science communication, helps them to develop an interactive exhibit consistent with their current research, and offers them a venue for interacting with the public. No other evaluation work to date has examined how summer internships can uptake the PoP model. This presentation focuses on evaluation findings from two cohorts of summer interns across two years. Three primary domains were assessed: how demographic composition across cohorts required changes to the original PoP framework, which of the PoP professional development trainings were valued (or not) by interns, and changes to intern knowledge, attitudes, and abilities to communicate science. Analyses via surveys and interviews revealed that level of intern geoscience knowledge was a major factor in deciding the focus of the work, specifically whether to create new hands-on exhibits or use existing ones. Regarding the use of PoP trainings, there was no obvious pattern in what interns preferred. Most growth and learning for interns occurred during and after the outreach activity. Results of this evaluation can be used to inform other applications of the PoP approach in summer internships.

  2. Chroni - an Android Application for Geochronologists to Access Archived Sample Analyses from the NSF-Funded Geochron.Org Data Repository.

    Science.gov (United States)

    Nettles, J. J.; Bowring, J. F.

    2014-12-01

    NSF requires data management plans as part of funding proposals and geochronologists, among other scientists, are archiving their data and results to the public cloud archives managed by the NSF-funded Integrated Earth Data Applications, or IEDA. GeoChron is a database for geochronology housed within IEDA. The software application U-Pb_Redux developed at the Cyber Infrastructure Research and Development Lab for the Earth Sciences (CIRDLES.org) at the College of Charleston provides seamless connectivity to GeoChron for uranium-lead (U-Pb) geochronologists to automatically upload and retrieve their data and results. U-Pb_Redux also manages publication-quality documents including report tables and graphs. CHRONI is a lightweight mobile application for Android devices that provides easy access to these archived data and results. With CHRONI, U-Pb geochronologists can view archived data and analyses downloaded from the Geochron database, or any other location, in a customizable format. CHRONI uses the same extensible markup language (XML) schema and documents used by U-Pb_Redux and GeoChron. Report Settings are special XML files that can be customized in U-Pb_Redux, stored in the cloud, and then accessed and used in CHRONI to create the same customized data display on the mobile device. In addition to providing geologists effortless and mobile access to archived data and analyses, CHRONI allows users to manage their GeoChron credentials, quickly download private and public files via a specified IEDA International Geo Sample Number (IGSN) or URL, and view specialized graphics associated with particular IGSNs. Future versions of CHRONI will be developed to support iOS compatible devices. CHRONI is an open source project under the Apache 2 license and is hosted at https://github.com/CIRDLES/CHRONI. We encourage community participation in its continued development.

  3. Who is looking for an internship and successful in obtaining one? Examining application data from REU programs funded through NSF GEO

    Science.gov (United States)

    Hubenthal, M.; Kelly, M.

    2017-12-01

    The Directorate for Geosciences (GEO) at the National Science Foundation (NSF) is currently funding 60 Research Experiences for Undergraduate (REU) sites. Each site offers opportunities for 8 to 12 undergraduates to participate in research within solid earth, oceans, atmospheric and cryosphere sciences. Because applicant data is collected at individual REU sites, the exact number of unique applicants to all REU sites, and the demographics of this national applicant pool has not been previously reported. While some sites do provide some of this information to NSF in annual reports, obtaining and combining such data is problematic because the percentage of individuals that apply to multiple programs is unknown and generally believed anecdotally to be high, especially for students traditionally underrepresented in the geosciences. Understanding both the scale and makeup of the national applicant pool is important for several reasons. First, very little is known about how the supply and geographic location of slots in REU programs compares to the demand from undergraduate STEM majors interested in research experiences. Second, research into internship programs and their role in the career development process are limited by a lack of baseline data that includes both successful and unsuccessful internship applicants across the various sub-disciplines of the Earth sciences. Finally, designing and refining efforts to engage underrepresented populations in STEM research, and measuring the impact of such efforts is difficult without baseline data for comparison. We will present aggregate application data from up to 20 GEO REU funded programs. These programs represent Oceans, Atmospheres and Earth Science research areas and includes over a thousand applicants. Preliminary analysis suggests the number of unique applicants in the pool is higher than anecdotally predicted. Similarly, unique applicants from underrepresented communities also appears higher than anticipated.

  4. Solar receiver with integrated optics

    Science.gov (United States)

    Jiang, Lun; Winston, Roland

    2012-10-01

    The current challenge for PV/Thermal (PV/T) systems is the reduction of radiation heat loss. Compared to solar thermal selective coating, the solar cells cannot be used as an efficient thermal absorber due to their large emissivity of the encapsulation material. Many commercial PV/T products therefore require a high concentration (more than 10x) to reach an acceptable thermal efficiency for their receivers. Such a concentration system inevitably has to track or semi-track, which induces additional cost and collects only the direct radiation from the sun. We propose a new PV/T design using a vacuum encapsulated thin film cell to solve this problem. The proposed design also collects the diffuse sun light efficiently by using an external compound parabolic concentrator (XCPC). Since the transparent electrode (TCO) of thin film cell is inherently transparent in visible light and reflective beyond infrared, this design uses this layer instead of the conventional solar cell encapsulation as the outmost heat loss surface. By integrating such a vacuum design with a tube shaped absorber, we reduce the complexity of conducting the heat energy and electricity out of the device. A low concentration standalone non-tracking solar collector is proposed in this paper. We also analyzed the thermosyphon system configuration using heat transfer and ray tracing models. The economics of such a receiver are presented.

  5. Broadband direct RF digitization receivers

    CERN Document Server

    Jamin, Olivier

    2014-01-01

    This book discusses the trade-offs involved in designing direct RF digitization receivers for the radio frequency and digital signal processing domains.  A system-level framework is developed, quantifying the relevant impairments of the signal processing chain, through a comprehensive system-level analysis.  Special focus is given to noise analysis (thermal noise, quantization noise, saturation noise, signal-dependent noise), broadband non-linear distortion analysis, including the impact of the sampling strategy (low-pass, band-pass), analysis of time-interleaved ADC channel mismatches, sampling clock purity and digital channel selection. The system-level framework described is applied to the design of a cable multi-channel RF direct digitization receiver. An optimum RF signal conditioning, and some algorithms (automatic gain control loop, RF front-end amplitude equalization control loop) are used to relax the requirements of a 2.7GHz 11-bit ADC. A two-chip implementation is presented, using BiCMOS and 65nm...

  6. 张綖《诗余图谱》词调论刍议%A Elementary Analysis on the Theory of Ci-poetry Tune of Zhang Yan's Shiyu Tupu

    Institute of Scientific and Technical Information of China (English)

    张海涛

    2012-01-01

    Zhang Yan's Shiyu Tupu is the stereotyped works which shows that Ci-poetry started to depend on metrical(closely related to poetry) instead of temperament(closely related to music).One important symbol is his exploration on the tune of ci-poetry.He was not only the first one that divided the tune of Ci-poetry into three types,but also a research pioneer doing on issues such as"one tune but different names"and"one tune but different styles".What Zhangyan did laid a solid foundation for further study of future generationgs.%张綖的《诗余图谱》是词由音律向格律转变的定型之作,其中一个重要标志便是其对于词调的探讨。该书不仅首创了词调三分法,而且对同调异名和一调多体等问题皆有开拓之功,为后人的进一步研究打下了坚实的基础。

  7. CERN physicist receives Einstein Medal

    CERN Multimedia

    2006-01-01

    On 29 June the CERN theorist Gabriele Veneziano was awarded the prestigious Albert Einstein Medal for significant contributions to the understanding of string theory. This award is given by the Albert Einstein Society in Bern to individuals whose scientific contributions relate to the work of Einstein. Former recipients include exceptional physicists such as Murray Gell-Mann last year, but also Stephen Hawking and Victor Weisskopf. Gabriele Veneziano, a member of the integrated CERN Theory Team since 1977, led the Theory Division from 1994 to 1997 and has already received many prestigious prizes for his outstanding work, including the Enrico Fermi Prize (see CERN Courier, November 2005), the Dannie Heineman Prize for mathematical physics of the American Physical Society in 2004 (see Bulletin No. 47/2003), and the I. Ya. Pomeranchuk Prize of the Institute of Theoretical and Experimental Physics (Moscow) in 1999.

  8. FAST Maser Surveys J. S. Zhang

    Indian Academy of Sciences (India)

    nese institutions and industries and the first light is expected to be in 2016. FAST ... tem, extragalactic pulsar, high redshift megamasers and radio signals from exoplan- ets (Nan et al. ... Since OH maser emission was detected in galactic molecular clouds in 1960s. (Weaver ... OH maser (other three lines are weak or absent).

  9. DONG JIE Zhang, LIANG Wang, ZHON

    Indian Academy of Sciences (India)

    User

    development, hairless nude skin, and short life (Abitbol et al., 2015; Bryson et al., 2013). On the ... Foxn1 maintains TECs to support T-cell development via mcm2 ... were ligated upstream of the firefly luciferase gene in the plasmid pGL3-Basic.

  10. FAST Maser Surveys J. S. Zhang

    Indian Academy of Sciences (India)

    are found to be closely associated with ultra-compact HII regions, embedded IR sources, hot molecular cores, Herbig-Haro objects, and outflows etc., which can be used to probe star formation. And OH masers in circumstellar envelopes (cir- cumstellar masers) were found to be related to outflowing and cool winds from the.

  11. Applying the Science of Science Communication to Climate Change and Clean Energy: Lessons Learned from the NSF- and PBS-supported "Earth: The Operators' Manual"

    Science.gov (United States)

    Haines-Stiles, G.; Akuginow, E.; Sanford, C.

    2014-12-01

    Yale legal scholar and professor of psychology Dan Kahan has criticized the climate change science community for not applying what's known about effective communications strategies to topics with potentially controversial content. "Earth: The Operators' Manual," funded by NSF's Informal Science Education program and appearing on PBS was hosted by Penn State geoscientist Richard Alley. From the initial proposal forward into airing on public television in 2011 and 2012, ETOM aimed to be authoritative and apolitical while still being engaging to general audiences. Based on social scientific insights from project Advisor, Suzanne Moser, and others, ETOM aimed to avoid "climate porn" scare tactics and over-used footage, and to enlist a diverse group of "messengers" in addition to Alley. An important design criterion was to give equal time to clean energy solutions while pulling no punches as to the consensus findings of leading climate scientists. With the ETOM project now completed and final reports submitted to NSF, what results can be shared to inform future efforts? And how did ETOM compare in audience impact with other major media efforts such as Al Gore's "An Inconvenient Truth" or Showtime's more recent "Years of Living Dangerously"? Results reported draw on the external evaluation by Rockman Et Al, and include both quantitative and qualitative data. Key findings are the importance of including Texan ranchers enthusiastic about wind power alongside Navy Admirals adamant that climate change is human-caused and Marines implementing solar energy to reduce casualties incurred while transporting fossil fuels. In-person presentations by Alley and others at science centers served as de facto focus groups for scripting the TV programs, along with actual focus groups convened by Rockman. The 3rd program, ENERGY QUEST USA, documented 5 quite different communities, from Alaska to Forth Worth, Baltimore, Portland and Kansas, all using competition, local values, and economic

  12. Water jacket for solid particle solar receiver

    Science.gov (United States)

    Wasyluk, David T.

    2018-03-20

    A solar receiver includes: water jacket panels each having a light-receiving side and a back side with a watertight sealed plenum defined in-between; light apertures passing through the watertight sealed plenums to receive light from the light-receiving sides of the water jacket panels; a heat transfer medium gap defined between the back sides of the water jacket panels and a cylindrical back plate; and light channeling tubes optically coupled with the light apertures and extending into the heat transfer medium gap. In some embodiments ends of the light apertures at the light receiving side of the water jacket panel are welded together to define at least a portion of the light-receiving side. A cylindrical solar receiver may be constructed using a plurality of such water jacket panels arranged with their light-receiving sides facing outward.

  13. Several Common Grounds of Liu Zhi-ji and Zhang Xue-cheng in Their Historical Criticism%刘知幾与章学诚史学批评理论中的几个共通面向

    Institute of Scientific and Technical Information of China (English)

    张泓林; 毕兵

    2014-01-01

    Liu Zhiji’ s General History and Zhang Xuecheng ’ s General Principles of Literature and History born several common grounds in historical philosophy such as the relationship between history and literature , the principles and the methods of historical criticism and the self-cultivation of historians .They were particularly complementary and rever-berant in terms of recording the truth without fear or favor , viewing history dialectically and having an insight into the society and human being , thus pioneering a wide range of topics on the research of history and historical philosophy . Meanwhile , by putting forward concepts from the “three accomplishments of historians” to“historians ’ morality” and the “duty” of historians themselves , they not only provided the standard for the historians themselves , but also provid-ed a reference standard for later historians to continue to reflect and improve their self -cultivation .%章学诚的《文史通义》与刘知幾的《史通》在史文关系、史学批评原则与方法、史家自身修养上的总结达到了史学理论的共通面向,尤其是双方在秉笔直书、辨证史义、论世知人等方面的史学批评理论的互补与融合,为后世史学、史学理论的发展开辟了广阔的研究领域。同时,二人关于“史学三长”到“史德”概念的发展衍变及对史家自身“天职”问题的探讨,不仅为史家自身批评素养理论提供了准绳,更是为后世史家不断反思和提高自身修养提供了参考标准。

  14. Design of double capacitances infrasonic receiver

    International Nuclear Information System (INIS)

    Wang Changhai; Han Kuixia; Wang Fei

    2003-01-01

    The article introduces the theory of infrasonic generation and reception of nuclear explosion. An idea of the design of double capacitances infrasonic receiver using CPLD technology is given in it. Compare with the single capacitance infrasonic receiver, sensitivity of the improved receiver can be improved scores of times, dynamic range can be improved largely, and the whole performance gets improvement a lots

  15. 29 CFR 1917.155 - Air receivers.

    Science.gov (United States)

    2010-07-01

    .... This section applies to compressed air receivers and equipment used for operations such as cleaning... transportation applications as railways, vehicles or cranes. (b) Gauges and valves. (1) Air receivers shall be... 29 Labor 7 2010-07-01 2010-07-01 false Air receivers. 1917.155 Section 1917.155 Labor Regulations...

  16. 49 CFR 393.88 - Television receivers.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Television receivers. 393.88 Section 393.88... NECESSARY FOR SAFE OPERATION Miscellaneous Parts and Accessories § 393.88 Television receivers. Any motor vehicle equipped with a television viewer, screen or other means of visually receiving a television...

  17. 21 CFR 1020.10 - Television receivers.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Television receivers. 1020.10 Section 1020.10 Food...) RADIOLOGICAL HEALTH PERFORMANCE STANDARDS FOR IONIZING RADIATION EMITTING PRODUCTS § 1020.10 Television receivers. (a) Applicability. The provisions of this section are applicable to television receivers...

  18. More Efficient Solar Thermal-Energy Receiver

    Science.gov (United States)

    Dustin, M. O.

    1987-01-01

    Thermal stresses and reradiation reduced. Improved design for solar thermal-energy receiver overcomes three major deficiencies of solar dynamic receivers described in literature. Concentrator and receiver part of solar-thermal-energy system. Receiver divided into radiation section and storage section. Concentrated solar radiation falls on boiling ends of heat pipes, which transmit heat to thermal-energy-storage medium. Receiver used in number of applications to produce thermal energy directly for use or to store thermal energy for subsequent use in heat engine.

  19. What Lies Behind NSF Astronomer Demographics? Subjectivities of Women, Minorities and Foreign-born Astronomers within Meshworks of Big Science Astronomy

    Science.gov (United States)

    Guillen, Reynal; Gu, D.; Holbrook, J.; Murillo, L. F.; Traweek, S.

    2011-01-01

    Our current research focuses on the trajectory of scientists working with large-scale databases in astronomy, following them as they strategically build their careers, digital infrastructures, and make their epistemological commitments. We look specifically at how gender, ethnicity, nationality intersect in the process of subject formation in astronomy, as well as in the process of enrolling partners for the construction of instruments, design and implementation of large-scale databases. Work once figured as merely technical support, such assembling data catalogs, or as graphic design, generating pleasing images for public support, has been repositioned at the core of the field. Some have argued that such databases enable a new kind of scientific inquiry based on data exploration, such as the "fourth paradigm" or "data-driven" science. Our preliminary findings based on oral history interviews and ethnography provide insights into meshworks of women, African-American, "Hispanic," Asian-American and foreign-born astronomers. Our preliminary data suggest African-American men are more successful in sustaining astronomy careers than Chicano and Asian-American men. A distinctive theme in our data is the glocal character of meshworks available to and created by foreign-born women astronomers working at US facilities. Other data show that the proportion of Asian to Asian American and foreign-born Latina/o to Chicana/o astronomers is approximately equal. Futhermore, Asians and Latinas/os are represented in significantly greater numbers than Asian Americans and Chicanas/os. Among professional astronomers in the US, each ethnic minority group is numbered on the order of tens, not hundreds. Project support is provided by the NSF EAGER program to University of California, Los Angeles under award 0956589.

  20. Cubesat-Based Dtv Receiver Constellation for Ionospheric Tomography

    Science.gov (United States)

    Bahcivan, H.; Leveque, K.; Doe, R. A.

    2013-12-01

    The Radio Aurora Explorer mission, funded by NSF's Space Weather and Atmospheric Research program, has demonstrated the utility of CubeSat-based radio receiver payloads for ionospheric research. RAX has primarily been an investigation of microphysics of meter-scale ionospheric structures; however, the data products are also suitable for research on ionospheric effects on radio propagation. To date, the spacecraft has acquired (1) ground-based UHF radar signals that are backscattered from meter-scale ionospheric irregularities, which have been used to measure the dispersion properties of meter-scale plasma waves and (2) ground-based signals, directly on the transmitter-spacecraft path, which have been used to measure radio propagation disturbances (scintillations). Herein we describe the application of a CubeSat constellation of UHF receivers to expand the latter research topic for global-scale ionospheric tomography. The enabling factor for this expansion is the worldwide availability of ground-based digital television (DTV) broadcast signals whose characteristics are optimal for scintillation analysis. A significant part of the populated world have transitioned, or soon to be transitioned, to DTV. The DTV signal has a standard format that contains a highly phase-stable pilot carrier that can be readily adapted for propagation diagnostics. A multi-frequency software-defined radar receiver, similar to the RAX payload, can measure these signals at a large number of pilot carrier frequencies to make radio ray and diffraction tomographic measurements of the ionosphere and the irregularities contained in it. A constellation of CubeSats, launched simultaneously, or in sequence over years, similar to DMSPs, can listen to the DTV stations, providing a vast and dense probing of the ionosphere. Each spacecraft can establish links to a preprogrammed list of DTV stations and cycle through them using time-division frequency multiplexing (TDFM) method. An on board program can

  1. Concentrated solar power generation using solar receivers

    Science.gov (United States)

    Anderson, Bruce N.; Treece, William Dean; Brown, Dan; Bennhold, Florian; Hilgert, Christoph

    2017-08-08

    Inventive concentrated solar power systems using solar receivers, and related devices and methods, are generally described. Low pressure solar receivers are provided that function to convert solar radiation energy to thermal energy of a working fluid, e.g., a working fluid of a power generation or thermal storage system. In some embodiments, low pressure solar receivers are provided herein that are useful in conjunction with gas turbine based power generation systems.

  2. RF subsystem design for microwave communication receivers

    Science.gov (United States)

    Bickford, W. J.; Brodsky, W. G.

    A system review of the RF subsystems of (IFF) transponders, tropscatter receivers and SATCOM receivers is presented. The quantity potential for S-band and X-band IFF transponders establishes a baseline requirement. From this, the feasibility of a common design for these and other receivers is evaluated. Goals are established for a GaAs MMIC (monolithic microwave integrated circuit) device and related local oscillator preselector and self-test components.

  3. Receiver function estimated by maximum entropy deconvolution

    Institute of Scientific and Technical Information of China (English)

    吴庆举; 田小波; 张乃铃; 李卫平; 曾融生

    2003-01-01

    Maximum entropy deconvolution is presented to estimate receiver function, with the maximum entropy as the rule to determine auto-correlation and cross-correlation functions. The Toeplitz equation and Levinson algorithm are used to calculate the iterative formula of error-predicting filter, and receiver function is then estimated. During extrapolation, reflective coefficient is always less than 1, which keeps maximum entropy deconvolution stable. The maximum entropy of the data outside window increases the resolution of receiver function. Both synthetic and real seismograms show that maximum entropy deconvolution is an effective method to measure receiver function in time-domain.

  4. Effects of Oxytocin Administration on Receiving Help.

    Science.gov (United States)

    Human, Lauren J; Woolley, Joshua D; Mendes, Wendy Berry

    2017-11-27

    Receiving help can be a "mixed blessing." Despite the many psychosocial benefits it can carry, it sometimes has negative psychological consequences, such as loss in self-esteem or enhanced guilt. It is, therefore, important to understand the factors that modify responses to receiving help from others. We explored the role of the hormone oxytocin (OT) on affective and social responses to receiving help, given the putative role of OT in social bonding and attunement. To this end, we manipulated whether help was received from a same-sex interaction partner (confederate) versus a control condition, crossed with a double-blind administration of intranasal OT (vs. placebo), and examined subjective and observer-rated participant responses to help. We observed significant interactions between OT and the help manipulation. In the placebo condition, receiving help from the interaction partner compared with the control condition had negative consequences, such that participants reported greater negative affect and came to view themselves and their interaction partners more negatively after interacting together on several tasks. What is important, however, is that OT administration buffered against these negative subjective responses to receiving help. Further, outside observers rated participants who received OT administration as expressing greater happiness and gratitude in response to help, relative to those who received placebo. In sum, in the context of receiving help from a stranger, oxytocin administration fostered more positive affective and social responses. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  5. Shipping/Receiving and Quality Control

    Data.gov (United States)

    Federal Laboratory Consortium — Shipping receiving, quality control, large and precise inspection and CMM machines. Coordinate Measuring Machines, including "scanning" probes, optical comparators,...

  6. Compressive Sensing for Spread Spectrum Receivers

    DEFF Research Database (Denmark)

    Fyhn, Karsten; Jensen, Tobias Lindstrøm; Larsen, Torben

    2013-01-01

    With the advent of ubiquitous computing there are two design parameters of wireless communication devices that become very important: power efficiency and production cost. Compressive sensing enables the receiver in such devices to sample below the Shannon-Nyquist sampling rate, which may lead...... the bit error rate performance is degraded by the subsampling in the CS-enabled receivers, this may be remedied by including quantization in the receiver model.We also study the computational complexity of the proposed receiver design under different sparsity and measurement ratios. Our work shows...

  7. Comparisons of cirrus cloud properties between polluted and pristine air based on in-situ observations from the NSF HIPPO, EU INCA and NASA ATTREX campaigns

    Science.gov (United States)

    Diao, M.; Schumann, U.; Jensen, J. B.; Minikin, A.

    2015-12-01

    The radiative forcing of cirrus clouds is influenced by microphysical (e.g., ice crystal number concentration and size distribution) and macroscopic properties. Currently it is still unclear how the formation of cirrus clouds and their microphysical properties are influenced by anthropogenic emissions. In this work, we use airborne in-situ observations to compare cirrus cloud properties between polluted and pristine regions. Our dataset includes: the NSF HIAPER Pole-to-Pole Observations (HIPPO) Global campaign (2009-2011), the EU Interhemispheric Differences In Cirrus Properties from Anthropogenic Emissions (INCA) campaign (2000) and the NASA Airborne Tropical Tropopause Experiment (ATTREX) campaign (2014). The combined dataset include observations of both extratropical (HIPPO and INCA) and tropical (ATTREX) cirrus, over the Northern and Southern Hemispheres. We use the in-situ measured carbon monoxide (CO) mixing ratio as a pollution indicator, and compare ice microphysical properties (i.e., ice crystal number concentration (Nc) and number-weighted mean diameter (Dc)) between air masses with higher and lower CO. All analyses are restricted to T ≤ -40°C. By analyzing ice crystals (Fast-2DC, 87.5-1600 µm) in HIPPO, we found that Dc decreases with increasing CO concentration at multiple constant pressure levels. In addition, analysis of INCA data shows that Nc and extinction of small ice particles (FSSP 3-20 µm) increases with increasing CO. Particles < 87.5 µm in Fast-2DC data are not considered due to uncertainty in sample volume, and the FSSP measurements are subject to possible shattering. We further analyze the ice crystals (SPEC FCDP, 1-50 µm) in the tropical tropopause layer in ATTREX. At -70°C to -90°C, we found that the average Nc (Dc) increases (decreases) at higher CO. Overall, our results suggest that extratropical and tropical cirrus are likely to have more numerous small ice particles, when sampled in the more polluted background. Back

  8. Involving Minority High School Students in Cutting Edge Research through C-DEBI, an NSF-National Science and Technology Center

    Science.gov (United States)

    Singer, E.; Edwards, K. J.

    2012-12-01

    The Center for Dark Energy Biosphere Investigations (C-DEBI) was established as a National Science and Technology Center (NTC) funded by NSF in 2009. Its mission is to explore life beneath the seafloor and make transformative discoveries that advance science, benefit society, and inspire people of all ages and origins. Thanks to the multi-institutional character of C-DEBI, the Center has not only started a collaborative framework for experimental and exploratory research, but also targets education programs at the K-12, undergraduate, graduate and postdoctoral levels involving biogeochemists, microbiologists, geochemists and geologists. An example for this is the introduction of deep biosphere research into the K-12 classroom. In this context, C-DEBI has collaborated with teachers from the Animo Leadership High School in Inglewood, which is ranked 27th within California and has a total minority enrollment of 99%, to adapt Marine Biology classes and introduce latest Deep Biosphere Science discoveries. Three high school students participated in a pilot project over 6 months to gain hands-on experience in an ongoing study in a Marine Microbiology laboratory at University of Southern California. Graduate and postdoctoral students from the Departments of Biological and Earth Sciences supervised theory, praxis and project design, which was aimed at culturing strains of Marinobacter, one of the most ubiquitous marine microbial genera, and preparing extracted DNA for sequencing using the latest Ion Torrent Technology. Students learned about the interdisciplinary global context of the study and gained experience in laboratory procedures, including basic aseptical techniques, molecular biology methods, and cutting-edge sequencing Technology, as well as problem-solving and creative thinking in project preparation and conduction. This hands-on training included discussions about the 'Whys' and 'Hows' in today's research with respect to their specific project, but also from a

  9. NASA's Van Allen Probes RBSP-ECT and NSF's FIREBIRD Data Products and Access to Them: An Insider's Outlook on the Inner and Outer Belts.

    Science.gov (United States)

    Smith, S. S.; Spence, H. E.; Geoffrey, R.; Klumpar, D. M.

    2017-12-01

    In this poster, we present a summary of access to data products Radiation Belt Storm Probes - Energetic Particle Composition, and Thermal plasma (RBSP-ECT) suite of NASA's Van Allen Probes mission. The RBSP-ECT science investigation (http://rbsp-ect.sr.unh.edu) measures comprehensively the near-Earth charged particle environment in order to understand the processes that control the acceleration, global distribution, and variability of radiation belt electrons and ions. RBSP-ECT data products derive from the three instrument elements that comprise the suite, which collectively covers the broad energies that define the source and seed populations, the core radiation belts, and also their highest energy ultra-relativistic extensions. These RBSP-ECT instruments include, from lowest to highest energies: the Helium, Oxygen, Proton, and Electron (HOPE) sensor, the Magnetic Electron and Ion Spectrometer (MagEIS), and the Relativistic Electron and Proton Telescope (REPT). We provide a brief overview of their principles of operation, as well as a description of the Level 1-3 data products that the HOPE, MagEIS, and REPT instruments produce, both separately and together. We provide a summary of how to access these RBSP-ECT data products at our Science Operation Center and Science Data Center (http://www.rbsp-ect.lanl.gov/rbsp_ect.php ) as well as caveats for their use. In addition, we also provide a summary of access to the data products from NSF's CubeSat mission called Focused Investigation of Relativistic Electron Burst: Intensity, Range, and Dynamics (FIREBIRD). The dual CubeSat FIREBIRD missions provide data on energetic radiation belt electrons precipitating into the atmosphere at low altitudes, which complements and is contemporary with RBSP-ECT measurements. We provide a similar summary of how to access these data (https://ssel.montana.edu/firebird2.html). Finally, in the spirit of efficiently and effectively promoting and encouraging new collaborations, we present a

  10. An SDR based AIS receiver for satellites

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Mortensen, Hans Peter; Nielsen, Jens Frederik Dalsgaard

    2011-01-01

    For a few years now, there has been a high interest in monitoring the global ship traffic from space. A few satellite, capable of listening for ship borne AIS transponders have already been launched, and soon the AAUSAT3, carrying two different types of AIS receivers will also be launched. One...... of the AIS receivers onboard AAUSAT3 is an SDR based AIS receiver. This paper serves to describe the background of the AIS system, and how the SDR based receiver has been integrated into the AAUSAT3 satellite. Amongst some of the benefits of using an SDR based receiver is, that due to its versatility, new...... detection algorithms are easily deployed, and it is easily adapted the new proposed AIS transmission channels....

  11. Heat receiving plates in thermonuclear device

    International Nuclear Information System (INIS)

    Kitamura, Kazunori.

    1988-01-01

    Purpose: To obtain a heat receiving plate structure capable of withstanding sputtering wear and retaining the thermal deformation and residual stress low upon junction and available at a reduced cost. Constitution: Junction structures between heat sinks and armours are the same as usual, whereas high melting armour (for example, made of tungsten) are used at the portion on a heat receiving plate where the thermal load and particle load are higher while materials having a heat expansion coefficient similar to that of the heat sink (stainless steel) are used at the portion where the thermal load and particle load are lower on a heat receiving plate depending on the thermal load and particle load distribution. This can reduce the thermal deformation for the entire divertor heat receiving plate to obtain a heat receiving plate of a good surface dimensional accuracy. (Takahashi, M.)

  12. High thermal load receiving heat plate

    International Nuclear Information System (INIS)

    Shibutani, Jun-ichi; Shibayama, Kazuhito; Yamamoto, Keiichi; Uchida, Takaho.

    1993-01-01

    The present invention concerns a high thermal load heat receiving plate such as a divertor plate of a thermonuclear device. The high thermal load heat receiving plate of the present invention has a cooling performance capable of suppressing the temperature of an armour tile to less than a threshold value of the material against high thermal loads applied from plasmas. Spiral polygonal pipes are inserted in cooling pipes at a portion receiving high thermal loads in the high temperature load heat receiving plate of the present invention. Both ends of the polygonal pipes are sealed by lids. An area of the flow channel in the cooling pipes is thus reduced. Heat conductivity on the cooling surface of the cooling pipes is increased in the high thermal load heat receiving plate having such a structure. Accordingly, temperature elevation of the armour tile can be suppressed. (I.S.)

  13. Receiver functions analysis in Northern Tanzania to understand the earliest stage of rifting

    Science.gov (United States)

    Tiberi, C.; Albaric, J.; Deschamps, A.; Deverchere, J.; Ebinger, C. J.; Ferdinand, R. W.; Gautier, S.; Lambert, C.; Msabi, M.; Mtelela, K.; Muzuka, A.; Perrot, J.; Rasendra, N.; Roecker, S. W.; Rodzianko, A.; Witkin, E.

    2013-12-01

    The East African Rift (EAR) is the site of stretching and breakup of the lithosphere in response to a combination of regional pulling forces and mantle upwellings. Deformation results from complex interactions between magmatic intrusions, faulting, asthenospheric dynamism and far field stresses. It thus involves both deep processes and local inherited fabrics. In the frame of two international projects CRAFTI (NSF) and CoLiBrEA (ANR), we gather our skills to lead a multidisciplinary project in order to characterize the factors involved in continental rifting. We target the first 5 My of a magmatic rift initiating in thick (>150 km) continental lithosphere, where we can directly image and detect fault and magma interactions, the role of inherited and rheological heterogeneities of the lithosphere on rift localisation. We deployed 35 broadband seismic stations in Natron and Ngorongoro areas in January 2013 to characterize crustal and mantle structures of the rift. The stations were equipped by 3 component sensors and Reftek Recorders to continuously record teleseisms as well as local seismicity. We present here a receiver function analyse on the teleseismic events recorded during the first 6 months of the experiment. Both P- and S-waves receiver functions were proceeded to document the modification of the crust and the mantle due to plate stretching and magmatic processes. The Vp/Vs ratio informs on the state of the crust, which is affected by magmatic and fluids intrusions at different depths. The S-wave receiver function gives insight into the lithosphere state and the nature of the mantle beneath the rift (archean or plume affected).

  14. Fundamentals of GPS Receivers A Hardware Approach

    CERN Document Server

    Doberstein, Dan

    2012-01-01

    While much of the current literature on GPS receivers is aimed at those intimately familiar with their workings, this volume summarizes the basic principles using as little mathematics as possible, and details the necessary specifications and circuits for constructing a GPS receiver that is accurate to within 300 meters. Dedicated sections deal with the features of the GPS signal and its data stream, the details of the receiver (using a hybrid design as exemplar), and more advanced receivers and topics including time and frequency measurements. Later segments discuss the Zarlink GPS receiver chip set, as well as providing a thorough examination of the TurboRogue receiver, one of the most accurate yet made. Guiding the reader through the concepts and circuitry, from the antenna to the solution of user position, the book’s deployment of a hybrid receiver as a basis for discussion allows for extrapolation of the core ideas to more complex, and more accurate designs. Digital methods are used, but any analogue c...

  15. GPU Acceleration of DSP for Communication Receivers.

    Science.gov (United States)

    Gunther, Jake; Gunther, Hyrum; Moon, Todd

    2017-09-01

    Graphics processing unit (GPU) implementations of signal processing algorithms can outperform CPU-based implementations. This paper describes the GPU implementation of several algorithms encountered in a wide range of high-data rate communication receivers including filters, multirate filters, numerically controlled oscillators, and multi-stage digital down converters. These structures are tested by processing the 20 MHz wide FM radio band (88-108 MHz). Two receiver structures are explored: a single channel receiver and a filter bank channelizer. Both run in real time on NVIDIA GeForce GTX 1080 graphics card.

  16. Global Positioning System receiver evaluation results

    Energy Technology Data Exchange (ETDEWEB)

    Byrne, R.H.

    1993-09-01

    A Sandia project currently uses an outdated Magnavox 6400 Global Positioning System (GPS) receiver as the core of its navigation system. The goal of this study was to analyze the performance of the current GPS receiver compared to newer, less expensive models and to make recommendations on how to improve the performance of the overall navigation system. This paper discusses the test methodology used to experimentally analyze the performance of different GPS receivers, the test results, and recommendations on how an upgrade should proceed. Appendices contain detailed information regarding the raw data, test hardware, and test software.

  17. Decoding algorithm for vortex communications receiver

    Science.gov (United States)

    Kupferman, Judy; Arnon, Shlomi

    2018-01-01

    Vortex light beams can provide a tremendous alphabet for encoding information. We derive a symbol decoding algorithm for a direct detection matrix detector vortex beam receiver using Laguerre Gauss (LG) modes, and develop a mathematical model of symbol error rate (SER) for this receiver. We compare SER as a function of signal to noise ratio (SNR) for our algorithm and for the Pearson correlation algorithm. To our knowledge, this is the first comprehensive treatment of a decoding algorithm of a matrix detector for an LG receiver.

  18. Exploiting Redundancy in an OFDM SDR Receiver

    Directory of Open Access Journals (Sweden)

    Tomas Palenik

    2009-01-01

    Full Text Available Common OFDM system contains redundancy necessary to mitigate interblock interference and allows computationally effective single-tap frequency domain equalization in receiver. Assuming the system implements an outer error correcting code and channel state information is available in the receiver, we show that it is possible to understand the cyclic prefix insertion as a weak inner ECC encoding and exploit the introduced redundancy to slightly improve error performance of such a system. In this paper, an easy way to implement modification to an existing SDR OFDM receiver is presented. This modification enables the utilization of prefix redundancy, while preserving full compatibility with existing OFDM-based communication standards.

  19. Comparative effects of different enteral feeding methods in head and neck cancer patients receiving radiotherapy or chemoradiotherapy: a network meta-analysis

    Directory of Open Access Journals (Sweden)

    Zhang ZH

    2016-05-01

    Full Text Available Zhihong Zhang,1,2 Yu Zhu,1 Yun Ling,3 Lijuan Zhang,1 Hongwei Wan1 1Department of Nursing, Shanghai Proton and Heavy Ion Center, 2Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, 3Department of Human Resource, Shanghai Proton and Heavy Ion Center, Shanghai, People’s Republic of China Abstract: Nasogastric tube (NGT and percutaneous endoscopic gastrostomy were frequently used in the head and neck cancer patients when malnutrition was present. Nevertheless, the evidence was inclusive in terms of the choice and the time of tube placement. The aim of this network meta-analysis was to evaluate the comparative effects of prophylactic percutaneous endoscopic gastrostomy (pPEG, reactive percutaneous endoscopic gastrostomy (rPEG, and NGT in the head and neck cancer patients receiving radiotherapy or chemoradiotherapy. Databases of PubMed, Web of Science, and Elsevier were searched from inception to October 2015. Thirteen studies enrolling 1,631 participants were included in this network meta-analysis. The results indicated that both pPEG and NGT were superior to rPEG in the management of weight loss. pPEG was associated with the least rate of treatment interruption and nutrition-related hospital admission among pPEG, rPEG, and NGT. Meanwhile, there was no difference in tube-related complications. Our study suggested that pPEG might be a better choice in malnutrition management in the head and neck cancer patients undergoing radiotherapy or chemoradiotherapy. However, its effects need to be further investigated in more randomized controlled trials. Keywords: malnutrition, tube feeding, weight loss, treatment interruption, readmission, complication

  20. 29 CFR 1926.306 - Air receivers.

    Science.gov (United States)

    2010-07-01

    ... transportation vehicles such as steam railroad cars, electric railway cars, and automotive equipment. (2) New and... manholes therein are easily accessible. Under no circumstances shall an air receiver be buried underground...

  1. 29 CFR 1910.169 - Air receivers.

    Science.gov (United States)

    2010-07-01

    ... and equipment used on transportation vehicles such as steam railroad cars, electric railway cars, and... therein are easily accessible. Under no circumstances shall an air receiver be buried underground or...

  2. 47 CFR 32.1170 - Receivables.

    Science.gov (United States)

    2010-10-01

    ... FOR TELECOMMUNICATIONS COMPANIES Instructions for Balance Sheet Accounts § 32.1170 Receivables. (a... of interest accrued to the date of the balance sheet on bonds, notes, and other commercial paper...

  3. Optical Coherent Receiver Enables THz Wireless Bridge

    DEFF Research Database (Denmark)

    Yu, Xianbin; Liu, Kexin; Zhang, Hangkai

    2016-01-01

    We experimentally demonstrated a 45 Gbit/s 400 GHz photonic wireless communication system enabled by an optical coherent receiver, which has a high potential in fast recovery of high data rate connections, for example, in disaster....

  4. Storage rack for fuel cell receiving shrouds

    International Nuclear Information System (INIS)

    Mollon, L.

    1978-01-01

    Disclosed is a rack for receiving a multiplicity of vertical tubular shrouds or tubes for storing spent nuclear fuel cells. The rack comprises a plurality of horizontally reticulated frames interconnected by tension rods and spacing tubes surrounding the rods

  5. List of Nuclear Materials Licensing Actions Received

    Data.gov (United States)

    Nuclear Regulatory Commission — A catalog of all Materials Licensing Actions received for review. The catalog lists the name of the entity submitting the license application, their city and state,...

  6. Single-Receiver GPS Phase Bias Resolution

    Science.gov (United States)

    Bertiger, William I.; Haines, Bruce J.; Weiss, Jan P.; Harvey, Nathaniel E.

    2010-01-01

    Existing software has been modified to yield the benefits of integer fixed double-differenced GPS-phased ambiguities when processing data from a single GPS receiver with no access to any other GPS receiver data. When the double-differenced combination of phase biases can be fixed reliably, a significant improvement in solution accuracy is obtained. This innovation uses a large global set of GPS receivers (40 to 80 receivers) to solve for the GPS satellite orbits and clocks (along with any other parameters). In this process, integer ambiguities are fixed and information on the ambiguity constraints is saved. For each GPS transmitter/receiver pair, the process saves the arc start and stop times, the wide-lane average value for the arc, the standard deviation of the wide lane, and the dual-frequency phase bias after bias fixing for the arc. The second step of the process uses the orbit and clock information, the bias information from the global solution, and only data from the single receiver to resolve double-differenced phase combinations. It is called "resolved" instead of "fixed" because constraints are introduced into the problem with a finite data weight to better account for possible errors. A receiver in orbit has much shorter continuous passes of data than a receiver fixed to the Earth. The method has parameters to account for this. In particular, differences in drifting wide-lane values must be handled differently. The first step of the process is automated, using two JPL software sets, Longarc and Gipsy-Oasis. The resulting orbit/clock and bias information files are posted on anonymous ftp for use by any licensed Gipsy-Oasis user. The second step is implemented in the Gipsy-Oasis executable, gd2p.pl, which automates the entire process, including fetching the information from anonymous ftp

  7. Flexible receiver adapter formal design review

    International Nuclear Information System (INIS)

    Krieg, S.A.

    1995-01-01

    This memo summarizes the results of the Formal (90%) Design Review process and meetings held to evaluate the design of the Flexible Receiver Adapters, support platforms, and associated equipment. The equipment is part of the Flexible Receiver System used to remove, transport, and store long length contaminated equipment and components from both the double and single-shell underground storage tanks at the 200 area tank farms

  8. Anatomy of a digital coherent receiver

    DEFF Research Database (Denmark)

    Borkowski, Robert; Zibar, Darko; Tafur Monroy, Idelfonso

    2014-01-01

    , orthonormaliation, chromatic dispersion compensation/nonlinear compensation, resampling a nd timing recovery, polarization demultiplexing and equalization, frequency and phase recovery, digital demodulation. We also describe novel subsystems of a digital coherent receiver: modulation format recognition......Digital coherent receivers have gained significant attention in the last decade. The reason for this is that coherent detection, along with digital signal processing (DSP) allows for substantial increase of the channel capacity by employing advanced detection techniques. In this paper, we first...

  9. Are we there yet? An NSF-CAREER sponsored field program as a vehicle for engaging high school students in geology

    Science.gov (United States)

    Frank, T. D.

    2011-12-01

    Many students graduate from high school having never been exposed to the geosciences. The idea of a career in the geosciences is therefore often not on the radar when students embark on university studies. History on the Rocks, a field-based summer program developed as part of a NSF-CAREER grant and offered annually since 2008, is designed to expose high school students to geology through hands-on experiences. The program focuses on interpreting the sedimentary rock record, the major archive of Earth history. Following a day of introductory exercises in the lab, participants travel to world-class geologic sites around Nebraska and collect evidence that allows them to interpret environment and climate at the time of deposition. They use their data to consider how climate change, sea level, and catastrophic events leave their imprints on the rock record and to reconstruct Nebraska's geologic history. In 2008, 12 high school science teachers from districts across Nebraska, incuding the Santee Nation district, enrolled in the program. Teachers developed a set of lesson plans related to their field experience. They posted the plans online and now routinely use them in their home schools, thereby exposing their students to geology. Subsequent programs have been held for groups of high school students drawn from rural and urban regions throughout the state. Working with students raised some unforeseen issues related to accident liability and parental concern about students working in remote areas. These problems were solved by offering the program through existing, well-known entities, including Girls Inc., a nonprofit organization that empowers girls from low-income families in urban settings (i.e., Omaha), and the 4H Youth Development Extension Office at the University of Nebraska-Lincoln (UNL). Both groups are eager to provide students with the opportunity to visit a university and explore careers. Convincing inner-city students, who generally came to the program with

  10. Efficient receiver tuning using differential evolution strategies

    Science.gov (United States)

    Wheeler, Caleb H.; Toland, Trevor G.

    2016-08-01

    Differential evolution (DE) is a powerful and computationally inexpensive optimization strategy that can be used to search an entire parameter space or to converge quickly on a solution. The Kilopixel Array Pathfinder Project (KAPPa) is a heterodyne receiver system delivering 5 GHz of instantaneous bandwidth in the tuning range of 645-695 GHz. The fully automated KAPPa receiver test system finds optimal receiver tuning using performance feedback and DE. We present an adaptation of DE for use in rapid receiver characterization. The KAPPa DE algorithm is written in Python 2.7 and is fully integrated with the KAPPa instrument control, data processing, and visualization code. KAPPa develops the technologies needed to realize heterodyne focal plane arrays containing 1000 pixels. Finding optimal receiver tuning by investigating large parameter spaces is one of many challenges facing the characterization phase of KAPPa. This is a difficult task via by-hand techniques. Characterizing or tuning in an automated fashion without need for human intervention is desirable for future large scale arrays. While many optimization strategies exist, DE is ideal for time and performance constraints because it can be set to converge to a solution rapidly with minimal computational overhead. We discuss how DE is utilized in the KAPPa system and discuss its performance and look toward the future of 1000 pixel array receivers and consider how the KAPPa DE system might be applied.

  11. Reply to the comment by Q.Q. Qiao et al. on ;Cenozoic tectonic deformation and uplift of the South Tian Shan: Implications from magnetostratigraphy and balanced cross-section restoration of the Kuqa depression; by Tao Zhang, Xiaomin Fang, Chunhui Song, Erwin Appel, and Yadong Wang [Tectonophysics, 2014, doi:10.1016/j.tecto.2014.04.044

    Science.gov (United States)

    Zhang, Tao; Fang, Xiaomin; Song, Chunhui; Appel, Erwin; Wang, Yadong

    2017-07-01

    Qiao et al. (2016) commented on our work (Zhang et al., 2014) and rejected our reinterpretation of the magnetostratigraphic results of Huang et al. (2006) and Li et al. (2006), with the results gained using the Dynamic Time Warping Algorithm technique (DTWAT) as their main basis. However, Qiao et al. (2016) did not provide details of their modeling inputs, and, in particular, the parameters they chose for their calculations, where such parameters can have a serious impact upon any results. We therefore performed calculations using the same software (i.e., Qupydon) as Qiao et al. (2016), using reliable parameter settings. The results showed that the ;interesting correlation; of a 6000 minimum cost output completely correlate with the magnetostratigraphic Chrons C18r to C3An.1n ( 40-6 Ma), which is consistent with our reinterpreted magnetostratigraphic results. Furthermore, we summarized previous biostratigraphic studies of nearby areas; the data resulting from this process also supported our reinterpreted magnetostratigraphic correlation. We were therefore able to confirm the revised magnetostratigraphic correlation of Zhang et al. (2014).

  12. Evidence against roles for phorbol binding protein Munc13-1, ADAM adaptor Eve-1, or vesicle trafficking phosphoproteins Munc18 or NSF as phospho-state-sensitive modulators of phorbol/PKC-activated Alzheimer APP ectodomain shedding

    Directory of Open Access Journals (Sweden)

    Lovestone Simon

    2007-12-01

    Full Text Available Abstract Background Shedding of the Alzheimer amyloid precursor protein (APP ectodomain can be accelerated by phorbol esters, compounds that act via protein kinase C (PKC or through unconventional phorbol-binding proteins such as Munc13-1. We have previously demonstrated that application of phorbol esters or purified PKC potentiates budding of APP-bearing secretory vesicles at the trans-Golgi network (TGN and toward the plasma membrane where APP becomes a substrate for enzymes responsible for shedding, known collectively as α-secretase(s. However, molecular identification of the presumptive "phospho-state-sensitive modulators of ectodomain shedding" (PMES responsible for regulated shedding has been challenging. Here, we examined the effects on APP ectodomain shedding of four phorbol-sensitive proteins involved in regulation of vesicular membrane trafficking of APP: Munc13-1, Munc18, NSF, and Eve-1. Results Overexpression of either phorbol-sensitive wildtype Munc13-1 or phorbol-insensitive Munc13-1 H567K resulted in increased basal APP ectodomain shedding. However, in contrast to the report of Roßner et al (2004, phorbol ester-dependent APP ectodomain shedding from cells overexpressing APP and Munc13-1 wildtype was indistinguishable from that observed following application of phorbol to cells overexpressing APP and Munc13-1 H567K mutant. This pattern of similar effects on basal and stimulated APP shedding was also observed for Munc18 and NSF. Eve-1, an ADAM adaptor protein reported to be essential for PKC-regulated shedding of pro-EGF, was found to play no obvious role in regulated shedding of sAPPα. Conclusion Our results indicate that, in the HEK293 system, Munc13-1, Munc18, NSF, and EVE-1 fail to meet essential criteria for identity as PMES for APP.

  13. Evidence against roles for phorbol binding protein Munc13-1, ADAM adaptor Eve-1, or vesicle trafficking phosphoproteins Munc18 or NSF as phospho-state-sensitive modulators of phorbol/PKC-activated Alzheimer APP ectodomain shedding.

    Science.gov (United States)

    Ikin, Annat F; Causevic, Mirsada; Pedrini, Steve; Benson, Lyndsey S; Buxbaum, Joseph D; Suzuki, Toshiharu; Lovestone, Simon; Higashiyama, Shigeki; Mustelin, Tomas; Burgoyne, Robert D; Gandy, Sam

    2007-12-09

    Shedding of the Alzheimer amyloid precursor protein (APP) ectodomain can be accelerated by phorbol esters, compounds that act via protein kinase C (PKC) or through unconventional phorbol-binding proteins such as Munc13-1. We have previously demonstrated that application of phorbol esters or purified PKC potentiates budding of APP-bearing secretory vesicles at the trans-Golgi network (TGN) and toward the plasma membrane where APP becomes a substrate for enzymes responsible for shedding, known collectively as alpha-secretase(s). However, molecular identification of the presumptive "phospho-state-sensitive modulators of ectodomain shedding" (PMES) responsible for regulated shedding has been challenging. Here, we examined the effects on APP ectodomain shedding of four phorbol-sensitive proteins involved in regulation of vesicular membrane trafficking of APP: Munc13-1, Munc18, NSF, and Eve-1. Overexpression of either phorbol-sensitive wildtype Munc13-1 or phorbol-insensitive Munc13-1 H567K resulted in increased basal APP ectodomain shedding. However, in contrast to the report of Rossner et al (2004), phorbol ester-dependent APP ectodomain shedding from cells overexpressing APP and Munc13-1 wildtype was indistinguishable from that observed following application of phorbol to cells overexpressing APP and Munc13-1 H567K mutant. This pattern of similar effects on basal and stimulated APP shedding was also observed for Munc18 and NSF. Eve-1, an ADAM adaptor protein reported to be essential for PKC-regulated shedding of pro-EGF, was found to play no obvious role in regulated shedding of sAPPalpha. Our results indicate that, in the HEK293 system, Munc13-1, Munc18, NSF, and EVE-1 fail to meet essential criteria for identity as PMES for APP.

  14. Effectiveness of pharmacist dosing adjustment for critically ill patients receiving continuous renal replacement therapy: a comparative study

    Directory of Open Access Journals (Sweden)

    Jiang SP

    2014-06-01

    Full Text Available Sai-Ping Jiang,1 Zheng-Yi Zhu,2 Xiao-Liang Wu,3 Xiao-Yang Lu,1 Xing-Guo Zhang,1 Bao-Hua Wu1 1Department of Pharmacy, the First Affiliated Hospital, 2Department of Pharmacy, Children’s Hospital, College of Medicine, Zhejiang University, Hangzhou, 3Intensive Care Unit, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China Background: The impact of continuous renal replacement therapy (CRRT on drug removal is complicated; pharmacist dosing adjustment for these patients may be advantageous. This study aims to describe the development and implementation of pharmacist dosing adjustment for critically ill patients receiving CRRT and to examine the effectiveness of pharmacist interventions. Methods: A comparative study was conducted in an intensive care unit (ICU of a university-affiliated hospital. Patients receiving CRRT in the intervention group received specialized pharmacy dosing service from pharmacists, whereas patients in the no-intervention group received routine medical care without pharmacist involvement. The two phases were compared to evaluate the outcome of pharmacist dosing adjustment. Results: The pharmacist carried out 233 dosing adjustment recommendations for patients receiving CRRT, and 212 (90.98% of the recommendations were well accepted by the physicians. Changes in CRRT-related variables (n=144, 61.81% were the most common risk factors for dosing errors, whereas antibiotics (n=168, 72.10% were the medications most commonly associated with dosing errors. Pharmacist dosing adjustment resulted in a US$2,345.98 ICU cost savings per critically ill patient receiving CRRT. Suspected adverse drug events in the intervention group were significantly lower than those in the preintervention group (35 in 27 patients versus [vs] 18 in eleven patients, P<0.001. However, there was no significant difference between length of ICU stay and mortality after pharmacist dosing adjustment, which

  15. ASTRID© - Advanced Solar Tubular ReceIver Design: A powerful tool for receiver design and optimization

    Science.gov (United States)

    Frantz, Cathy; Fritsch, Andreas; Uhlig, Ralf

    2017-06-01

    In solar tower power plants the receiver is one of the critical components. It converts the solar radiation into heat and must withstand high heat flux densities and high daily or even hourly gradients (due to passage of clouds). For this reason, the challenge during receiver design is to find a reasonable compromise between receiver efficiency, reliability, lifetime and cost. There is a strong interaction between the heliostat field, the receiver and the heat transfer fluid. Therefore, a proper receiver design needs to consider these components within the receiver optimization. There are several design and optimization tools for receivers, but most of them focus only on the receiver, ignoring the heliostat field and other parts of the plant. During the last years DLR developed the ASTRIDcode for tubular receiver concept simulation. The code comprises both a high and a low-detail model. The low-detail model utilizes a number of simplifications which allow the user to screen a high number of receiver concepts for optimization purposes. The high-detail model uses a FE model and is able to compute local absorber and salt temperatures with high accuracy. One key strength of the ASTRIDcode is its interface to a ray tracing software which simulates a realistic heat flux distributions on the receiver surface. The results generated by the ASTRIDcode have been validated by CFD simulations and measurement data.

  16. 'Chaos' in superregenerative receivers

    Energy Technology Data Exchange (ETDEWEB)

    Commercon, Jean-Claude [INSA, Department d' Informatiques, Ba-hat t B. Pascal, 20 Avenue Albert Einsten, 69621 Villeurbaune (France)]. E-mail: jean-claude.commercon@insa-lyon.fr; Badard, Robert [INSA, Department d' Informatiques, Bat B. Pascal, 20 Avenue Albert Einsten, 69621 Villeurbaune (France)]. E-mail: robert.badard@insa-lyon.fr

    2005-02-01

    The superregenerative principle has been known since the early 1920s. The circuit is extremely simple and extremely sensitive. Today, superheterodyne receivers generally supplant superregenerative receivers in most applications because there are several undesirable characteristics: poor selectivity, reradiation, etc. Superregenerative receivers undergo a revival in recent papers for wireless systems, where low cost and very low power consumption are relevant: house/building meters (such as water, energy, gas counter), personal computer environment (keyboard, mouse), etc. Another drawback is the noise level which is higher than that of a well-designed superheterodyne receiver; without an antenna input signal, the output of the receiver hears in an earphone as a waterfall noise; this sound principally is the inherent input noise amplified and detected by the circuit; however, when the input noise is negligible with respect of an antenna input signal, we are faced to an other source of 'noise' self-generated by the superregenerative working. The main objective of this paper concerns this self-generated noise coming from an exponential growing followed by a re-injection process for which the final state is a function of the phase of the input signal.

  17. Dish/stirling hybrid-receiver

    Science.gov (United States)

    Mehos, Mark S.; Anselmo, Kenneth M.; Moreno, James B.; Andraka, Charles E.; Rawlinson, K. Scott; Corey, John; Bohn, Mark S.

    2002-01-01

    A hybrid high-temperature solar receiver is provided which comprises a solar heat-pipe-receiver including a front dome having a solar absorber surface for receiving concentrated solar energy, a heat pipe wick, a rear dome, a sidewall joining the front and the rear dome, and a vapor and a return liquid tube connecting to an engine, and a fossil fuel fired combustion system in radial integration with the sidewall for simultaneous operation with the solar heat pipe receiver, the combustion system comprising an air and fuel pre-mixer, an outer cooling jacket for tangentially introducing and cooling the mixture, a recuperator for preheating the mixture, a burner plenum having an inner and an outer wall, a porous cylindrical metal matrix burner firing radially inward facing a sodium vapor sink, the mixture ignited downstream of the matrix forming combustion products, an exhaust plenum, a fossil-fuel heat-input surface having an outer surface covered with a pin-fin array, the combustion products flowing through the array to give up additional heat to the receiver, and an inner surface covered with an extension of the heat-pipe wick, a pin-fin shroud sealed to the burner and exhaust plenums, an end seal, a flue-gas diversion tube and a flue-gas valve for use at off-design conditions to limit the temperature of the pre-heated air and fuel mixture, preventing pre-ignition.

  18. The Communication Between Designer and Design Receiver

    DEFF Research Database (Denmark)

    Dai, Zheng; Dai, Yan

    2009-01-01

    When people think about a product,the first impression always mainly influences the result.Product is the medium of communication between designer and designer receiver.Because both of them have varied different experience and background,the information would be biased during the transferring...... process.The common symbols which can be recognized by both of designer and receiver are the key tools for communication.In some case,the same symbol in one product would be leads to different receiver impression.Generally,impression includes 3 aspects:aesthetics,function, and emotion.Designer needs...... to create an attractive and accurate impression in product from these 3 aspects.For facing the dilemma of communication,some experimental approaches can help designer deal with unique and diversity situations.Solving the detail problem in each step could keep the original meaning of designer....

  19. The ARSQ: the athletes' received support questionnaire.

    Science.gov (United States)

    Freeman, Paul; Coffee, Pete; Moll, Tjerk; Rees, Tim; Sammy, Nadine

    2014-04-01

    To address calls for context-specific measurement of social support, this article reports the development of the Athletes' Received Support Questionnaire (ARSQ) and demonstrates initial evidence for its validity. Across four studies there was support for a four-dimensional structure reflecting emotional, esteem, informational, and tangible received support. There was also support for unidimensional and higher-order models. Further, Study 3 provided some support for convergent validity, with significant correlations between the corresponding dimensions of the ARSQ and the Inventory of Socially Supportive Behaviors. Study 4 provided evidence for the nomological validity of the ARSQ. Emotional and esteem support significantly predicted self-confidence and positive affect, and tangible support significantly moderated the relationship between stress and negative affect. Collectively, these results provide initial evidence for the validity of the ARSQ, and offer researchers flexibility to adopt either a multidimensional or aggregated approach to measuring received support.

  20. Precision Continuum Receivers for Astrophysical Applications

    Science.gov (United States)

    Wollack, Edward J.

    2011-01-01

    Cryogenically cooled HEMT (High Electron Mobility Transistor) amplifiers find widespread use in radioastronomy receivers. In recent years, these devices have also been commonly employed in broadband receivers for precision measurements of the Cosmic Microwave Background (CMB) radiation. In this setting, the combination of ultra-low-noise and low-spectral-resolution observations reinforce the importance achieving suitable control over the device environment to achieve fundamentally limited receiver performance. The influence of the intrinsic amplifier stability at low frequencies on data quality (e.g., achievable noise and residual temporal correlations), observational and calibration strategies, as well as architectural mitigation approaches in this setting will be discussed. The implications of device level 1/f fluctuations reported in the literature on system performance will be reviewed.

  1. Multistandard Receiver Design for Telemedicine Monitoring System

    Directory of Open Access Journals (Sweden)

    Hongmei Wang

    2018-01-01

    Full Text Available In short-distance wireless communications for telemedicine monitoring, different medical data measurement equipment has different wireless transmission modes. A multistandard receiver is designed that can adapt to different medical data measuring equipment. Using a second-order bandpass sampling for the design of antialiasing filters, two aliasing signals can be separated. Simultaneously, constraint conditions for sampling frequency are not as critical. The design is useful for a multistandard receiver in a telemedicine monitoring system and has the advantages such as saving spectrum resources and facilitating spectrum planning.

  2. Analog fourier transform channelizer and OFDM receiver

    OpenAIRE

    2007-01-01

    An OFDM receiver having an analog multiplier based I-Q channelizing filter, samples and holds consecutive analog I-Q samples of an I-Q baseband, the I-Q basebands having OFDM sub-channels. A lattice of analog I-Q multipliers and analog I-Q summers concurrently receives the held analog I-Q samples, performs analog I-Q multiplications and analog I-Q additions to concurrently generate a plurality of analog I-Q output signals, representing an N-point discrete Fourier transform of the held analog ...

  3. Building and Testing a Portable VLF Receiver

    Science.gov (United States)

    McLaughlin, Robert; Krause, L.

    2014-01-01

    Unwanted emissions or signal noise is a major problem for VLF radio receivers. These can occur from man made sources such as power line hum, which can be prevalent for many harmonics after the fundamental 50 or 60 Hz AC source or from VLF radio transmissions such as LORAN, used for navigation and communications. Natural emissions can also be detrimental to the quality of recordings as some of the more interesting natural emissions such as whistlers or auroral chorus may be drowned out by the more common sferic emissions. VLF receivers must selectively filter out unwanted emissions and amplify the filtered signal to a record-able level without degrading the quality.

  4. Billing and accounts receivable: fundamentals for improvement.

    Science.gov (United States)

    Bizon, M M

    1993-07-01

    If a healthcare facility's accounts receivable operation is experiencing problems, the patient accounts manager should survey all areas of his or her responsibility to determine the best method of resolving the difficulties. One effective technique to reduce billing problems is to take a proactive--not reactive--approach. If mistakes can be corrected before they get out of control, and if the patient accounts manager can ensure that claims will not be denied, a healthcare facility's accounts receivable should remain in good condition.

  5. Improved timing recovery in wireless mobile receivers

    CSIR Research Space (South Africa)

    Olwal, TO

    2007-06-01

    Full Text Available are transmitted to the receiver. In the proposed method, the receiver exploits the soft decisions computed at each turbo decoding iteration to provide reliable estimates of a soft timing signal, which in turn, improves the decoding time. The derived method... as ( ) ( )( )1 2 1 2, ,..., , ,...,Q Qk k k k k k k k ka a x x x P a x x xη∗ ∗∈Β= ∑ (29) where ( )1 2, ,..., Qk k kx x x are the Q coded bits in a multilevel symbol modulation scheme [32]. According to [29], the soft information demapper computes posteriori...

  6. Measuring Balance Across Multiple Radar Receiver Channels.

    Energy Technology Data Exchange (ETDEWEB)

    Doerry, Armin W.; Bickel, Douglas L.

    2018-03-01

    When radar receivers employ multiple channels, the general intent is for the receive channels to be as alike as possible, if not as ideal as possible. This is usually done via prudent hardware design, supplemented by system calibration. Towards this end, we require a quality metric for ascertaining the goodness of a radar channel, and the degree of match to sibling channels. We propose a relevant and useable metric to do just that. Acknowledgements This report was the result of an unfunded research and development activity.

  7. Richard W. Ziolkowski Receives Honorary Doctorate

    DEFF Research Database (Denmark)

    Breinbjerg, Olav

    2012-01-01

    At the annual Commemoration of the Technical University of Denmark (DTU) on April 27, 2012, Prof. Richard W. Ziolkowski, University of Arizona (UoA), received DTU's highest academic degree, the Honorary Doctor degree: Doctor Technices Honoris Causa (Figure 1). Prof. Ziolkowski has been a close...

  8. Howard Feiertag receives hospitality industry award

    OpenAIRE

    Ho, Sookhan

    2004-01-01

    Howard Feiertag, of Blacksburg, an instructor in hospitality and tourism management at Virginia Tech's Pamplin College of Business, received the inaugural Excellence in Sales and Marketing Strategy Award at the Hospitality Sales and Marketing Association/New York University Strategy Conference in New York recently.

  9. 7 CFR 966.124 - Approved receiver.

    Science.gov (United States)

    2010-01-01

    ... limited to, the following information: (1) Name, address, contact person, telephone number, and e-mail... 7 Agriculture 8 2010-01-01 2010-01-01 false Approved receiver. 966.124 Section 966.124 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements...

  10. A 24GHz Radar Receiver in CMOS

    NARCIS (Netherlands)

    Kwok, K.C.

    2015-01-01

    This thesis investigates the system design and circuit implementation of a 24GHz-band short-range radar receiver in CMOS technology. The propagation and penetration properties of EM wave offer the possibility of non-contact based remote sensing and through-the-wall imaging of distance stationary or

  11. 8. Prevalence of Epistaxis among Patients Receiving ...

    African Journals Online (AJOL)

    user

    The aim of this study was thus to determine the prevalence, aetiology and treatment modalities of epistaxis among patients receiving otorhinolaryngology services at MNH and MOI. Materials and Methods: A cross-sectional, hospital based study was done to 427 patients at Muhimbili. National Hospital (MNH) and Muhimbili.

  12. Receiving Assistance and Local Food System Participation

    Directory of Open Access Journals (Sweden)

    Rebecca L. Som Castellano

    2017-02-01

    Full Text Available A body of literature has noted that local food systems (LFSs may not involve active participation by individuals with lower incomes. This is, in part, a function of racial and class hegemony, as well as physical and financial accessibility of LFSs. LFS institutions, such as farmers’ markets, have been working to facilitate receipt of food assistance programs, such as the Supplemental Nutrition Assistance Program (SNAP. Charitable assistance programs, such as food banks, have also been actively working to engage in LFSs, for example, by making local foods available. However, little research has explored the role that receiving public or charitable assistance can play in influencing LFS participation. In this article, I utilize quantitative and qualitative data collected from across the state of Ohio to examine the relationship between receiving assistance and LFS participation for women, who remain predominately responsible for food provisioning in the U.S., including among those who participate in LFSs. Quantitative results suggest that receiving assistance can increase participation in LFSs. Qualitative data provides more nuanced information about the importance of food assistance for women who want to participate in LFSs, and suggest that it is essential that food cooperatives and farmers’ markets are equipped to receive food assistance programs, such as SNAP, in order for women with lower incomes to participate in LFSs.

  13. Reasons Parents Exempt Children from Receiving Immunizations

    Science.gov (United States)

    Luthy, Karlen E.; Beckstrand, Renea L.; Callister, Lynn C.; Cahoon, Spencer

    2012-01-01

    School nurses are on the front lines of educational efforts to promote childhood vaccinations. However, some parents still choose to exempt their children from receiving vaccinations for personal reasons. Studying the beliefs of parents who exempt vaccinations allows health care workers, including school nurses, to better understand parental…

  14. Social effects of migration in receiving countries.

    Science.gov (United States)

    Ohndorf, W

    1989-06-01

    This paper examines the impact of post-1945 migration into Western, Middle, and Northern Europe from Southern Europe, Turkey, and Northern Africa, and migration to the traditional immigration countries by Asian and Latin American immigrants, on the social structures of receiving countries. Between 1955 and 1974, 1) traditional migration to the US and Australia became less important for European countries while traditional receiving countries accepted many immigrants from developing countries; and 2) rapid economic revival in Western and Northern Europe caused a considerable labor shortage which was filled by migrant workers especially from Southern Europe, Turkey, and Northern Africa, who stayed only until they reached their economic goals. Since 1974, job vacancies have declined and unemployment has soared. This employment crisis caused some migrants 1) to return to their countries of origin, 2) to bring the rest of their families to the receiving country, or 3) to lengthen their stay considerably. The number of refugees has also significantly increased since the mid-970s, as has the number of illegal migrants. After the mid-1970s, Europe began to experience integration problems. The different aspects of the impact of migration on social structures include 1) improvement of the housing situation for foreigners, 2) teaching migrants the language of the receiving country, 3) solving the unemployment problem of unskilled migrants, 4) improvement of educational and vocational qualifications of 2nd generation migrants, 5) development of programs to help unemployed wives of migrants to learn the language and meet indigenous women, 6) encouraging migrants to maintain their cultural identity and assisting them with reintegration if they return to their original country, 7) coping with the problems of refugees, and 8) solving the problems of illegal migration. Almost all receiving countries now severely restrict further immigration. [Those policies should result in

  15. CERN Press Office receives award from Euroscience

    CERN Multimedia

    2009-01-01

    The CERN Communication group has received an award for its efforts in communicating the LHC first beam to the media and the public. James Gillies, head of the Communication group was presented the AlphaGalileo Research Public Relations Award on Wednesday, 14 October during the Euroscience Media Award Ceremony in Hannover. "It’s great to receive this recognition," said Gillies. "Of course, we had great material to work with: the LHC is a fantastic story and one that is going to get even better. Angels, Demons and black holes also had their roles to play, but behind the media interest there’s been a lot of hard work by my team. This is for them." The CERN Communication group also works with communication professionals in all the CERN Member States and major physics labs around the world through the European Particle Physics Communication Network, and the InterAction collaboration. "Without them," says Gillies, &am...

  16. Nutritional survey of neoplasm patients receiving radiotherapy

    International Nuclear Information System (INIS)

    Li Xinli; Zhu Shengtao

    2001-01-01

    Objective: In order to know the nutriture of neoplasm patients receiving radiotherapy and give nutritional guidance properly, the authors make the following survey. Methods: A dietary survey of twenty-four-hour retrospective method was used; The patients' activity was recorded and their twenty-four hours caloric consumption was calculated. Results: Of all the patients, the intake of protein is more than recommended, percentage of calorific proportion is about 15%-19% of gross caloric. A larger portion of patients' caloric intake, especially female patients, is lower than caloric consumption. Among all the patients, the intake of vegetables is not enough; The consumption of milk and milky products is lower; it is common and serious that neoplasm patients receiving radiotherapy have vitamine and mineral's scarcity. Conclusions: Nutriture of neoplasm patients is not optimistic, it is imperative to improve their nutriture

  17. Graphene radio frequency receiver integrated circuit.

    Science.gov (United States)

    Han, Shu-Jen; Garcia, Alberto Valdes; Oida, Satoshi; Jenkins, Keith A; Haensch, Wilfried

    2014-01-01

    Graphene has attracted much interest as a future channel material in radio frequency electronics because of its superior electrical properties. Fabrication of a graphene integrated circuit without significantly degrading transistor performance has proven to be challenging, posing one of the major bottlenecks to compete with existing technologies. Here we present a fabrication method fully preserving graphene transistor quality, demonstrated with the implementation of a high-performance three-stage graphene integrated circuit. The circuit operates as a radio frequency receiver performing signal amplification, filtering and downconversion mixing. All circuit components are integrated into 0.6 mm(2) area and fabricated on 200 mm silicon wafers, showing the unprecedented graphene circuit complexity and silicon complementary metal-oxide-semiconductor process compatibility. The demonstrated circuit performance allow us to use graphene integrated circuit to perform practical wireless communication functions, receiving and restoring digital text transmitted on a 4.3-GHz carrier signal.

  18. Hypersensitivity reactions in patients receiving hemodialysis.

    Science.gov (United States)

    Butani, Lavjay; Calogiuri, Gianfranco

    2017-06-01

    To describe hypersensitivity reactions in patients receiving maintenance hemodialysis. PubMed search of articles published during the past 30 years with an emphasis on publications in the past decade. Case reports and review articles describing hypersensitivity reactions in the context of hemodialysis. Pharmacologic agents are the most common identifiable cause of hypersensitivity reactions in patients receiving hemodialysis. These include iron, erythropoietin, and heparin, which can cause anaphylactic or pseudoallergic reactions, and topical antibiotics and anesthetics, which lead to delayed-type hypersensitivity reactions. Many hypersensitivity reactions are triggered by complement activation and increased bradykinin resulting from contact system activation, especially in the context of angiotensin-converting enzyme inhibitor use. Several alternative pharmacologic preparations and dialyzer membranes are available, such that once an etiology for the reaction is established, recurrences can be prevented without affecting the quality of care provided to patients. Although hypersensitivity reactions are uncommon in patients receiving hemodialysis, they can be life-threatening. Moreover, considering the large prevalence of the end-stage renal disease population, the implications of such reactions are enormous. Most reactions are pseudoallergic and not mediated by immunoglobulin E. The multiplicity of potential exposures and the complexity of the environment to which patients on dialysis are exposed make it challenging to identify the precise cause of these reactions. Great diligence is needed to investigate hypersensitivity reactions to avoid recurrence in this high-risk population. Copyright © 2017 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.

  19. TDRSS S-shuttle unique receiver equipment

    Science.gov (United States)

    Weinberg, A.; Schwartz, J. J.; Spearing, R.

    1985-01-01

    Beginning with STS-9, the Tracking and Date Relay Satellite system (TDRSS) will start providing S- and Ku-band communications and tracking support to the Space Shuttle and its payloads. The most significant element of this support takes place at the TDRSS White Sands Ground Terminal, which processes the Shuttle return link S- and Ku-band signals. While Ku-band hardware available to other TDRSS users is also applied to Ku-Shuttle, stringent S-Shuttle link margins have precluded the application of the standard TDRSS S-band processing equipment to S-Shuttle. It was therfore found necessary to develop a unique S-Shuttle Receiver that embodies state-of-the-art digital technology and processing techniques. This receiver, developed by Motorola, Inc., enhances link margins by 1.5 dB relative to the standard S-band equipment and its bit error rate performance is within a few tenths of a dB of theory. An overview description of the Space Shuttle Receiver Equipment (SSRE) is presented which includes the presentation of block diagrams and salient design features. Selected, measured performance results are also presented.

  20. A Decentralized Receiver in Gaussian Interference

    Directory of Open Access Journals (Sweden)

    Christian D. Chapman

    2018-04-01

    Full Text Available Bounds are developed on the maximum communications rate between a transmitter and a fusion node aided by a cluster of distributed receivers with limited resources for cooperation, all in the presence of an additive Gaussian interferer. The receivers cannot communicate with one another and can only convey processed versions of their observations to the fusion center through a Local Array Network (LAN with limited total throughput. The effectiveness of each bound’s approach for mitigating a strong interferer is assessed over a wide range of channels. It is seen that, if resources are shared effectively, even a simple quantize-and-forward strategy can mitigate an interferer 20 dB stronger than the signal in a diverse range of spatially Ricean channels. Monte-Carlo experiments for the bounds reveal that, while achievable rates are stable when varying the receiver’s observed scattered-path to line-of-sight signal power, the receivers must adapt how they share resources in response to this change. The bounds analyzed are proven to be achievable and are seen to be tight with capacity when LAN resources are either ample or limited.

  1. Multifunction waveform generator for EM receiver testing

    Science.gov (United States)

    Chen, Kai; Jin, Sheng; Deng, Ming

    2018-01-01

    In many electromagnetic (EM) methods - such as magnetotelluric, spectral-induced polarization (SIP), time-domain-induced polarization (TDIP), and controlled-source audio magnetotelluric (CSAMT) methods - it is important to evaluate and test the EM receivers during their development stage. To assess the performance of the developed EM receivers, controlled synthetic data that simulate the observed signals in different modes are required. In CSAMT and SIP mode testing, the waveform generator should use the GPS time as the reference for repeating schedule. Based on our testing, the frequency range, frequency precision, and time synchronization of the currently available function waveform generators on the market are deficient. This paper presents a multifunction waveform generator with three waveforms: (1) a wideband, low-noise electromagnetic field signal to be used for magnetotelluric, audio-magnetotelluric, and long-period magnetotelluric studies; (2) a repeating frequency sweep square waveform for CSAMT and SIP studies; and (3) a positive-zero-negative-zero signal that contains primary and secondary fields for TDIP studies. In this paper, we provide the principles of the above three waveforms along with a hardware design for the generator. Furthermore, testing of the EM receiver was conducted with the waveform generator, and the results of the experiment were compared with those calculated from the simulation and theory in the frequency band of interest.

  2. Russian institute receives CMS Gold Award

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    The Snezhinsk All-Russian Institute of Scientific Research for Technical Physics (VNIITF) of the Russian Federal Nuclear Centre (RFNC) is one of twelve CMS suppliers to receive awards for outstanding performance this year. The CMS Collaboration took the opportunity of the visit to CERN of the Director of VNIITF and his deputy to present the CMS Gold Award, which the institute has received for its exceptional performance in the assembly of steel plates for the CMS forward hadronic calorimeter. This calorimeter consists of two sets of 18 wedge-shaped modules arranged concentrically around the beam-pipe at each end of the CMS detector. Each module consists of steel absorber plates with quartz fibres inserted into them. The institute developed a special welding technique to assemble the absorber plates, enabling a high-quality detector to be produced at relatively low cost.RFNC-VNIITF Director Professor Georgy Rykovanov (right), is seen here receiving the Gold Award from Felicitas Pauss, Vice-Chairman of the CMS ...

  3. Submillimeter heterodyne receiver for the CSO telescope

    International Nuclear Information System (INIS)

    Gulkis, S.

    1988-01-01

    This task is to build a cryogenically cooled 620 to 700 GHz astronomical receiver that will be used as a facility instrument at the CalTech Submillimeter Observatory (CSO) on Mauna Kea, Hawaii. The receiver will have applications as a very high resolution spectrometer to investigate spectral lines in planetary and satellite atmospheres, and comets. The receiver will also be used to make continuum measurements of planets, satellites, and asteroids. During FY88, a scale model (200 GHz) SIS mixer radiometer was built and intrgrated into a cryostat designed for use on the CSO telescope. This system will serve as a model to guide the work on the higher frequency mixer. A solid state local oscillator source that covers two bands in the 600 to 700 GHz has been developed under contract JPL and will be delivered before the end of the year. Work has continued on the SIS materials needed for the 620 to 700 GHz mixer. Test hardware has been developed which allow the 1 to 5 curves for SIS material to be easily measured

  4. Towards Self-Clocked Gated OCDMA Receiver

    Science.gov (United States)

    Idris, S.; Osadola, T.; Glesk, I.

    2013-02-01

    A novel incoherent OCDMA receiver with incorporated all-optical clock recovery for self-synchronization of a time gate for the multi access interferences (MAI) suppression and minimizing the effect of data time jitter in incoherent OCDMA system was successfully developed and demonstrated. The solution was implemented and tested in a multiuser environment in an out of the laboratory OCDMA testbed with two-dimensional wavelength-hopping time-spreading coding scheme and OC-48 (2.5 Gbp/s) data rate. The self-clocked all-optical time gate uses SOA-based fibre ring laser optical clock, recovered all-optically from the received OCDMA traffic to control its switching window for cleaning the autocorrelation peak from the surrounding MAI. A wider eye opening was achieved when the all-optically recovered clock from received data was used for synchronization if compared to a static approach with the RF clock being generated by a RF synthesizer. Clean eye diagram was also achieved when recovered clock is used to drive time gating.

  5. Ground receiving station (GRS) of UMS - receiving and processing the electromagnetic wave data from satellite

    International Nuclear Information System (INIS)

    Mohammad Syahmi Nordin; Fauziah Abdul Aziz

    2007-01-01

    The low resolution Automatic Picture Transmission (APT) data from the National Oceanic and Atmospheric Administration (NOAA) polar-orbiting satellites Advanced Very High Resolution Radiometer (AVHRR) is being received and recorded in real-time mode at ground receiving station in School of Science and Technology, Universiti Malaysia Sabah. The system is suitable for the developing and undeveloped countries in south and Southeast Asia and is said to be acceptable for engineering, agricultural, climatological and environmental applications. The system comprises a personal computer attached with a small APT receiver. The data transmission between the ground receiving station and NOAA satellites is using the electromagnetic wave. The relation for receiving and processing the electromagnetic wave in the transmission will be discussed. (Author)

  6. 从张小夫《诺日朗》的音响变化过程看电子音乐作品中的声音演变方式%The Evolution of Sound in Electronic Music Works by Taking Zhang Xiaofu's Norlong as an Example

    Institute of Scientific and Technical Information of China (English)

    骈韵頔

    2013-01-01

    张小夫以中国深厚的历史文化、传统的声乐、器乐为依托,利用自己丰富的电子音乐技术手段,创作了大量具有强烈中国民族气息的现代电子音乐作品,其中《诺日朗》是其最优秀的作品之一。本文通过仔细分析作品《诺日朗》的音乐发展过程以及作品中主要的三种素材类型,来探讨电子音乐作品中核心素材的演变方式,并以此论证张小夫注重“技术性”与“可听性”、“民族性”三者相结合的创作理念。%With Chinese history and culture , traditional vocal music and instruments as the foundation , Zhang Xiaofu has pro-duced a lot of electronic music works with Chinese style by taking advantage of much electronic music technology .Norlong is one of his best works .The thesis analyses the music developing process and three different material types in this music in detail to discuss the evolution of core material in the works of electronic music and prove Zhang Xiaofu's creative idea of the combination of "technology","audibility"and "nationality"in music.

  7. Superconducting Submm Integrated Receiver for TELIS

    Energy Technology Data Exchange (ETDEWEB)

    Koshelets, V P [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Ermakov, A B [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Filippenko, L V [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Koryukin, O V [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Khudchenko, A V [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Sobolev, A S [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Torgashin, M Yu [Institute of Radio Engineering and Electronics (IREE) (Russian Federation); Yagoubov, P A [SRON National Institute for Space Research (Netherlands); Hoogeveen, R W M [SRON National Institute for Space Research (Netherlands); Vreeling, W J [SRON National Institute for Space Research (Netherlands); Wild, W [SRON National Institute for Space Research (Netherlands); Pylypenko, O M [State Research Center of Superconducting Electronics ' Iceberg' (Ukraine)

    2006-06-01

    In this report we present design and first experimental results for development of the submm superconducting integrated receiver spectrometer for Terahertz Limb Sounder (TELIS). TELIS is a collaborative European project to build up a three-channel heterodyne balloon-based spectrometer for measuring a variety of atmospheric constituents of the stratosphere. The 550 - 650 GHz channel of TELIS is based on a phase-locked Superconducting Integrated Receiver (SIR). SIR is an on-chip combination of a low-noise Superconductor-Insulator-Superconductor (SIS) mixer with quasioptical antenna, a superconducting Flux Flow Oscillator (FFO) acting as Local Oscillator (LO), and SIS harmonic mixer (HM) for FFO phase locking. A number of new solutions were implemented in the new generation of SIR chips. To achieve the wide-band performance of the spectrometer, a side-feed twin-SIS mixer and balanced SIS mixer with 0.8 {mu}m{sup 2} junctions integrated with a double-dipole (or double-slot) antenna is used. An improved design of the FFO for TELIS has been developed and optimized providing a free-running linewidth between 10 and 2 MHz in the frequency range 500 - 700 GHz. It is important to ensure that tuning of a phase-locked (PL) SIR can be performed remotely by telecommand. For this purpose a number of approaches for the PL SIR automatic computer control have been developed. All receiver components (including input optical elements and Martin-Puplett polarization rotating interferometer for single side band operation) will be mounted on a single 4.2 K plate inside a 40 x 180 x 80 mm{sup 3} box. First measurements give an uncorrected double side band (DSB) noise temperature below 250 K measured with the phase-locked FFO; more detailed results are presented at the conference.

  8. Superconducting Submm Integrated Receiver for TELIS

    International Nuclear Information System (INIS)

    Koshelets, V P; Ermakov, A B; Filippenko, L V; Koryukin, O V; Khudchenko, A V; Sobolev, A S; Torgashin, M Yu; Yagoubov, P A; Hoogeveen, R W M; Vreeling, W J; Wild, W; Pylypenko, O M

    2006-01-01

    In this report we present design and first experimental results for development of the submm superconducting integrated receiver spectrometer for Terahertz Limb Sounder (TELIS). TELIS is a collaborative European project to build up a three-channel heterodyne balloon-based spectrometer for measuring a variety of atmospheric constituents of the stratosphere. The 550 - 650 GHz channel of TELIS is based on a phase-locked Superconducting Integrated Receiver (SIR). SIR is an on-chip combination of a low-noise Superconductor-Insulator-Superconductor (SIS) mixer with quasioptical antenna, a superconducting Flux Flow Oscillator (FFO) acting as Local Oscillator (LO), and SIS harmonic mixer (HM) for FFO phase locking. A number of new solutions were implemented in the new generation of SIR chips. To achieve the wide-band performance of the spectrometer, a side-feed twin-SIS mixer and balanced SIS mixer with 0.8 μm 2 junctions integrated with a double-dipole (or double-slot) antenna is used. An improved design of the FFO for TELIS has been developed and optimized providing a free-running linewidth between 10 and 2 MHz in the frequency range 500 - 700 GHz. It is important to ensure that tuning of a phase-locked (PL) SIR can be performed remotely by telecommand. For this purpose a number of approaches for the PL SIR automatic computer control have been developed. All receiver components (including input optical elements and Martin-Puplett polarization rotating interferometer for single side band operation) will be mounted on a single 4.2 K plate inside a 40 x 180 x 80 mm 3 box. First measurements give an uncorrected double side band (DSB) noise temperature below 250 K measured with the phase-locked FFO; more detailed results are presented at the conference

  9. Compressed Sensing-Based Direct Conversion Receiver

    DEFF Research Database (Denmark)

    Pierzchlewski, Jacek; Arildsen, Thomas; Larsen, Torben

    2012-01-01

    Due to the continuously increasing computational power of modern data receivers it is possible to move more and more processing from the analog to the digital domain. This paper presents a compressed sensing approach to relaxing the analog filtering requirements prior to the ADCs in a direct......-converted radio signals. As shown in an experiment presented in the article, when the proposed method is used, it is possible to relax the requirements for the quadrature down-converter filters. A random sampling device and an additional digital signal processing module is the price to pay for these relaxed...

  10. Radiation Doses Received by the Irish Population

    International Nuclear Information System (INIS)

    Colgan, P.A.; Organo, C.; Hone, C.; Fenton, D.

    2008-05-01

    Some chemical elements present in the environment since the Earth was formed are naturally radioactive and exposure to these sources of radiation cannot be avoided. There have also been additions to this natural inventory from artificial sources of radiation that did not exist before the 1940s. Other sources of radiation exposure include cosmic radiation from outer space and the use of radiation in medical diagnosis and treatment. There can be large variability in the dose received by invividual members of the population from any given source. Some sources of radiation expose every member of the population while, in other cases, only selected individuals may be exposed. For example, natural radioactivity is found in all soils and therefore everybody receives some radiation dose from this activity. On the other hand, in the case of medical exposures, only those who undergo a medical procedure using radiation will receive a radiation dose. The Radiological Protection Institute of Ireland (RPII) has undertaken a comprehensive review of the relevant data on radiation exposure in Ireland. Where no national data have been identified, the RPII has either undertaken its own research or has referred to the international literature to provide a best estimate of what the exposure in Ireland might be. This has allowed the relative contribution of each source to be quantified. This new evaluation is the most up-to-date assessment of radiation exposure and updates the assessment previously reported in 2004. The dose quoted for each source is the annual 'per caput' dose calculated on the basis of the most recently available data. This is an average value calculated by adding the doses received by each individual exposed to a given radiation source and dividing the total by the current population of 4.24 million. All figures have been rounded, consistent with the accuracy of the data. In line with accepted international practice, where exposure takes place both indoors and

  11. Superconductor Digital-RF Receiver Systems

    Science.gov (United States)

    Mukhanov, Oleg A.; Kirichenko, Dmitri; Vernik, Igor V.; Filippov, Timur V.; Kirichenko, Alexander; Webber, Robert; Dotsenko, Vladimir; Talalaevskii, Andrei; Tang, Jia Cao; Sahu, Anubhav; Shevchenko, Pavel; Miller, Robert; Kaplan, Steven B.; Sarwana, Saad; Gupta, Deepnarayan

    Digital superconductor electronics has been experiencing rapid maturation with the emergence of smaller-scale, lower-cost communications applications which became the major technology drivers. These applications are primarily in the area of wireless communications, radar, and surveillance as well as in imaging and sensor systems. In these areas, the fundamental advantages of superconductivity translate into system benefits through novel Digital-RF architectures with direct digitization of wide band, high frequency radio frequency (RF) signals. At the same time the availability of relatively small 4K cryocoolers has lowered the foremost market barrier for cryogenically-cooled digital electronic systems. Recently, we have achieved a major breakthrough in the development, demonstration, and successful delivery of the cryocooled superconductor digital-RF receivers directly digitizing signals in a broad range from kilohertz to gigahertz. These essentially hybrid-technology systems combine a variety of superconductor and semiconductor technologies packaged with two-stage commercial cryocoolers: cryogenic Nb mixed-signal and digital circuits based on Rapid Single Flux Quantum (RSFQ) technology, room-temperature amplifiers, FPGA processing and control circuitry. The demonstrated cryocooled digital-RF systems are the world's first and fastest directly digitizing receivers operating with live satellite signals in X-band and performing signal acquisition in HF to L-band at ˜30GHz clock frequencies.

  12. Eosinophils increase in animals that received biotherapic

    Directory of Open Access Journals (Sweden)

    Pedro Gilberto Silva Morais

    2012-12-01

    Full Text Available Dairy industry is an important Brazilian economic activity participating of income generation. European breeds cattle aren’t adapted to parasites found in the tropics, like the Rhipicephalus microplus tick. Parasites can acquire resistance to allopathic products, but not to homeopathic products. We evaluate the efficacy of an antiparasiticide biotherapic against the R. microplus tick. The biotherapic was prepared according to the homeopathic pharmacopoeia recommendations from vegetable (Abrotanum and animal products (Rhipicephalus microplus, Amblyomma cajenennense, Haematobia irritans, Musca domestica, Dermatobia hominis, all diluted and vigorous shaken (dynamized in water or alcohol at a ratio of 1:99, in the 12th Centesimal Hahnemann (CH12, with limestone as the carrier. This homeophatic product found in veterinary pharmacies of Ituiutaba’s region, Minas Gerais State, is registered at Ministério da Agricultura, Pecuária e Abastecimento (MAPA. Natural tick infestation was accessed in thirty Girolando (Gir x Holstein cows with 7 to 13 year-old, by monthly counting of tick female bigger than 6 mm, from October/2009 to July/2011. Cows were divided in three groups of 10 similar animals. The treated group (T1 received roughage, concentrate and biotherapic. The placebo group (T2 received roughage, concentrate and limestone and the control group (T3 received only roughage and concentrate. T1 and T2 groups were managed together and remained in the same paddock. T3 group was separed from T1 and T2 by a wire fence. From October 2009 to September 2010 blood cell counts and serum biochemical tests were performed monthly only in T1 and T2, but visual clinical observations were made in all animals. Any group was treated with acaricide when the count’s average reached 50 or more ticks. It was necessary 7 baths with acaricide in T1 and T2, while in T3 group (control group it was necessary 19 acaricide baths to control the cattle tick. We verified

  13. Radioactive contamination in monitors received for calibration

    International Nuclear Information System (INIS)

    Dias, Paulo S.; Santos, Gilvan C. dos; Brunelo, Maria Antonieta G.; Paula, Tiago C. de; Pires, Marina A.; Borges, Jose C.

    2013-01-01

    The Calibration Laboratory - LABCAL, from the Research Center for Metrology and Testing - METROBRAS, MRA Comercio de Instrumentos Eletronicos Ltda., began activities in October 2008 and, in August 2009, decided to establish a procedure for monitoring tests, external and internal, of all packages received from customers, containing instruments for calibration. The aim was to investigate possible contamination radioactive on these instruments. On July 2011, this procedure was extended to packagings of personal thermoluminescent dosemeters - TLD, received by the newly created Laboratory Laboratorio de Dosimetria Pessoal - LDP . In the monitoring procedure were used monitors with external probe, type pancake, MRA brand, models GP - 500 and MIR 7028. During the 37 months in which this investigation was conducted, were detected 42 cases of radioactive contamination, with the following characteristics: 1) just one case was personal dosimeter, TLD type; 2) just one case was not from a packing from nuclear medicine service - was from a mining company; 3) contamination occurred on packs and instruments, located and/or widespread; 4) contamination values ranged from slightly above the level of background radiation to about a thousand fold. Although METROBRAS has facilities for decontamination, in most cases, especially those of higher contamination, the procedure followed was to store the contaminated material in a room used for storage of radioactive sources. Periodically, each package and/or instrument was monitored, being released when the radiation level matched the background radiation. Every contamination detected, the client and/or owner of the instrument was informed. The Brazilian National Energy Commission - CNEN, was informed, during your public consultation for reviewing the standard for nuclear medicine services, held in mid-2012, having received from METROBRAS the statistical data available at the time. The high frequency of contamination detected and the high

  14. Signal Processing for Improved Wireless Receiver Performance

    DEFF Research Database (Denmark)

    Christensen, Lars P.B.

    2007-01-01

    This thesis is concerned with signal processing for improving the performance of wireless communication receivers for well-established cellular networks such as the GSM/EDGE and WCDMA/HSPA systems. The goal of doing so, is to improve the end-user experience and/or provide a higher system capacity...... by allowing an increased reuse of network resources. To achieve this goal, one must first understand the nature of the problem and an introduction is therefore provided. In addition, the concept of graph-based models and approximations for wireless communications is introduced along with various Belief...... Propagation (BP) methods for detecting the transmitted information, including the Turbo principle. Having established a framework for the research, various approximate detection schemes are discussed. First, the general form of linear detection is presented and it is argued that this may be preferable...

  15. The BINP receives its Golden Hadron award

    CERN Multimedia

    2002-01-01

    On Thursday, 14 September, the LHC Project Leader, Lyn Evans, handed over a Golden Hadron award to Alexander Skrinsky of Russia's Budker Institute of Nuclear Physics (BINP). The prize is awarded in recognition of exceptional performances by suppliers and this year prizes were awarded to two firms, Cockerill-Sambre (Belgium) and Wah-Chang (United States), and to the Budker Institute, which was unable to receive the award at the same time as the two other recipients (see Bulletin No 34/2002, of 19 August 2002). The Russian institute has been rewarded for the particularly high-quality production of 360 dipole magnets and 185 quadrupole magnets for the LHC proton beam transfer lines.

  16. Humboldt SK pilot biodigester receives funding

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2005-09-30

    The Canada-Saskatchewan Western Economic Partnership Agreement (WEPA) will provide funding for Canada's first pilot-scale biodigester to be built in Humboldt, Saskatchewan. The $208,138 pilot facility will use household garbage as well as agricultural waste such as manure and livestock operations, abattoirs and food processing to create heat or power and fertilizer. Support for this bio-energy facility, which could also reduce greenhouse gases, will come from the Prairie Agricultural Machinery Institute which has received $186,138 from Canada and Saskatchewan in the form of cost-shared federal-provincial funding. The pilot plant will test different combinations of waste material feedstocks and the characteristics of the resulting gas end products. The pilot facility will also provide design information for full-scale biodigester manufacturers in Canada. It is expected that 25 full-scale biodigesters will be constructed in Canada in the near future.

  17. Receiver based PAPR reduction in OFDMA

    KAUST Repository

    Ali, Anum Z.; Al-Zahrani, Ali Y.; Al-Naffouri, Tareq Y.; Naguib, Ayman F.

    2014-01-01

    High peak-to-average power ratio is one of the major drawbacks of orthogonal frequency division multiplexing (OFDM). Clipping is the simplest peak reduction scheme, however, it requires clipping mitigation at the receiver. Recently compressed sensing has been used for clipping mitigation (by exploiting the sparse nature of clipping signal). However, clipping estimation in multi-user scenario (i.e., OFDMA) is not straightforward as clipping distortions overlap in frequency domain and one cannot distinguish between distortions from different users. In this work, a collaborative clipping removal strategy is proposed based on joint estimation of the clipping distortions from all users. Further, an effective data aided channel estimation strategy for clipped OFDM is also outlined. Simulation results are presented to justify the effectiveness of the proposed schemes. © 2014 IEEE.

  18. Fast digitization and digital receiver technology

    International Nuclear Information System (INIS)

    Kimball, Ralph C.

    2002-01-01

    The potentially lucrative wireless market has led to technological advances in mixed signal devices such as high speed, high resolution A/D and D/A converters. This same market has also driven the development of high performance multi-channel digital receiver and digital transmitter ICs. Similarly, advances in semiconductor processes, coupled with the need for reduced time-to-market, has led to the development of large, enhanced performance, in-circuit programmable logic devices. A review of the key characteristics of these mixed-signal, signal processing and programmable logic devices is presented. The application of these devices and technologies to the instrumentation of Accelerators and Storage Rings is discussed and presented by way of examples. Issues relating to the requirements associated with real-time processing, I/O throughput, reconfigurability, reliability, maintainability and packaging requirements are also addressed

  19. Morel Receives 2005 Maurice Ewing Medal

    Science.gov (United States)

    Schrag, Daniel P.; Morel, François M. M.

    2006-02-01

    François M. M. Morel received the Ewing Medal at the AGU Fall Meeting Honors Ceremony, which was held on 7 December 2005, in San Francisco, Calif. The medal is given for significant original contributions to the scientific understanding of the processes in the ocean; for the advancement of oceanographic engineering, technology, and instrumentation; and for outstanding service to marine sciences. François Morel has led the search to understand the role of metals in the ocean, starting with a focus on inorganic processes and aquatic chemistry, and leading to a blend of geochemistry, microbiology, biochemistry, and genetics. His influence comes from his research and from the way he has educated an entire community of scientists with his textbooks, with his teaching, and through his former students and postdocs who hold faculty positions at universities throughout the world.

  20. Receiver operator characteristic (ROC) analysis without truth

    International Nuclear Information System (INIS)

    Henkelman, R.M.; Kay, I.; Bronskill, M.J.

    1990-01-01

    Receiver operator characteristic (ROC) analysis, the preferred method of evaluating diagnostic imaging tests, requires an independent assessment of the true state of disease, which can be difficult to obtain and is often of questionable accuracy. A new method of analysis is described which does not require independent truth data and which can be used when several accurate tests are being compared. This method uses correlative information to estimate the underlying model of multivariate normal distributions of disease-positive and disease-negative patients. The method is shown to give results equivalent to conventional ROC analysis in a comparison of computed tomography, radionuclide scintigraphy, and magnetic resonance imaging for liver metastasis. When independent truth is available, the method can be extended to incorporate truth data or to evaluate the consistency of the truth data with the imaging data

  1. Received View of Addiction, Relapse and Treatment.

    Science.gov (United States)

    Ndasauka, Yamikani; Wei, Zhengde; Zhang, Xiaochu

    2017-01-01

    It is important to highlight that attempts at understanding and explaining addiction have been made for centuries. It is, however, just five decades ago, with the growth of science and technology that more interest has been observed in this field. This chapter examines different views and theories that have been posited to understand and explain addiction. More attention will be given to prominent views that seem to draw consensus among researchers and medical practitioners. The first section of the chapter introduces the addiction debate, the different theories that have been provided to explain it from different perspectives and disciplines such as neurosciences, philosophy and psychology. Then, the chapter discusses different views on the role of relapse and what it entails in understanding addiction. The second section discusses different proposed and used forms of treating addiction. Thus, the chapter discusses the received view of addiction, the understanding of relapse as a critical element in addiction and treatments.

  2. MRI in children receiving total parenteral nutrition

    International Nuclear Information System (INIS)

    Quaghebeur, G.; Taylor, W.J.; Kingsley, D.P.E.; Fell, J.M.E.; Reynolds, A.P.; Milla, P.J.

    1996-01-01

    Cranial MRI was obtained in 13 of a group of 57 children receiving long-term parenteral nutrition, who were being investigated for hypermanganasaemia. Increased signal intensity on T1-weighted images has been reported in adult patients on long-term parenteral nutrition and with encephalopathy following chronic manganese exposure in arc welding. It has been postulated that these changes are due to deposition of the paramagnetic trace element manganese. In excess manganese is hepato- and neurotoxic and we present the correlation of whole blood manganese levels with imaging findings. The age range of our patients was 6 months to 10 years, and the duration of therapy 3 months to 10 years. In 7 children we found characteristic increased signal intensity on T1-weighted images, with no abnormality on T2-weighted images. All patients had elevated whole blood manganese levels, suggesting that the basis for this abnormality is indeed deposition of manganese within the tissues. (orig.). With 3 figs

  3. New Packing Structure of Concentration Solar Receiver

    International Nuclear Information System (INIS)

    Tsai, Shang-Yu; Lee, Yueh-Mu; Shih, Zun-Hao; Hong, Hwen-Fen; Shin, Hwa-Yuh; Kuo, Cherng-Tsong

    2010-01-01

    This paper presents a solution to the temperature issue in High Concentration Photovoltaic (HCPV) module device by using different thermal conductive material and packing structure. In general, the open-circuited voltage of a device reduces with the increase of temperature and therefore degrades its efficiency. The thermal conductive material we use in this paper, silicon, has a high thermal conductive coefficient (149 W/m·K) and steady semiconductor properties which are suitable for the application of solar receiver in HCPV module. Solar cell was soldered on a metal-plated Si substrate with a thicker SiO 2 film which acts as an insulating layer. Then it was mounted on an Al-based plate to obtain a better heat dissipating result.

  4. Receiver based PAPR reduction in OFDMA

    KAUST Repository

    Ali, Anum Z.

    2014-05-01

    High peak-to-average power ratio is one of the major drawbacks of orthogonal frequency division multiplexing (OFDM). Clipping is the simplest peak reduction scheme, however, it requires clipping mitigation at the receiver. Recently compressed sensing has been used for clipping mitigation (by exploiting the sparse nature of clipping signal). However, clipping estimation in multi-user scenario (i.e., OFDMA) is not straightforward as clipping distortions overlap in frequency domain and one cannot distinguish between distortions from different users. In this work, a collaborative clipping removal strategy is proposed based on joint estimation of the clipping distortions from all users. Further, an effective data aided channel estimation strategy for clipped OFDM is also outlined. Simulation results are presented to justify the effectiveness of the proposed schemes. © 2014 IEEE.

  5. IAEA receives Iraq's nuclear-related declaration

    International Nuclear Information System (INIS)

    2002-01-01

    Full text: The Director General of the International Atomic Energy Agency, Mohamed ElBaradei, announced that the IAEA received this evening, Sunday, 8 December 2002, at its Headquarters in Vienna, an approximately 2400 page declaration on Iraq's nuclear programme. The declaration consists of about 2100 pages in English and 300 pages in Arabic. The declaration was submitted by the Government of Iraq in response to paragraph 3 of Security Council resolution 1441 (8 November 2002), which requires Iraq to provide to UNMOVIC, the IAEA and to the Security Council, not later than 30 days of the date of that resolution, with 'currently accurate, full, and complete declaration of all aspects of its programmes to develop chemical, biological, and nuclear weapons, ballistic missiles, and other delivery systems... as well as all other chemical, biological, and nuclear programmes, including any which it claims are for purposes not related to weapon production or material'. 'The IAEA will immediately begin to assess this important new document,' said Mr. ElBaradei, 'including the painstaking and systematic cross-checking of the information provided by Iraq against information which the IAEA already has, information that it expects to receive from other Member States, as contemplated in resolution 1441, and results of past and present Agency verification activities.' Complete assessment of the declaration will be time consuming, particularly in light of the need to translate the 300 pages of Arabic text into English. However, the IAEA expects to be able to provide a preliminary analysis of the document to the Security Council within the next ten days, with a fuller assessment to be provided when it reports to the Council at the end of January. (IAEA)

  6. Transmit-receive eddy current probes

    International Nuclear Information System (INIS)

    Obrutsky, L.S.; Sullivan, S.P.; Cecco, V.S.

    1997-01-01

    In the last two decades, due to increased inspection demands, eddy current instrumentation has advanced from single-frequency, single-output instruments to multifrequency, computer-aided systems. This has significantly increased the scope of eddy current testing, but, unfortunately, it has also increased the cost and complexity of inspections. In addition, this approach has not always improved defect detectability or signal-to-noise. Most eddy current testing applications are still performed with impedance probes, which have well known limitations. However, recent research at AECL has led to improved eddy current inspections through the design and development of transmit-receive (T/R) probes. T/R eddy current probes, with laterally displaced transmit and receive coils, present a number of advantages over impedance probes. They have improved signal-to-noise ratio in the presence of variable lift-off compared to impedance probes. They have strong directional properties, permitting probe optimization for circumferential or axial crack detection, and possess good phase discrimination to surface defects. They can significantly increase the scope of eddy current testing permitting reliable detection and sizing of cracks in heat exchanger tubing as well as in welded areas of both ferritic and non-ferromagnetic components. This presentation will describe the operating principles of T/R probes with the help of computer-derived normalized voltage diagrams. We will discuss their directional properties and analyze the advantages of using single and multiple T/R probes over impedance probes for specific inspection cases. Current applications to surface and tube testing and some typical inspection results will be described. (author)

  7. Promoting Art through Technology, Education and Research of Natural Sciences (PATTERNS) across Wyoming, A Wyoming NSF EPSCoR Funded Project

    Science.gov (United States)

    Gellis, B. S.; McElroy, B. J.

    2016-12-01

    PATTERNS across Wyoming is a science and art project that promotes new and innovative approaches to STEM education and outreach, helping to re-contextualize how educators think about creative knowledge, and how to reach diverse audiences through informal education. The convergence of art, science and STEM outreach efforts is vital to increasing the presence of art in geosciences, developing multidisciplinary student research opportunities, expanding creative STEM thinking, and generating creative approaches of visualizing scientific data. A major goal of this project is to train art students to think critically about the value of scientific and artistic inquiry. PATTERNS across Wyoming makes science tangible to Wyoming citizens through K-14 art classrooms, and promotes novel maker-based art explorations centered around Wyoming's geosciences. The first PATTERNS across Wyoming scientific learning module (SIM) is a fish-tank sized flume that recreates natural patterns in sand as a result of fluid flow and sediment transport. It will help promotes the understanding of river systems found across Wyoming (e.g. Green, Yellowstone, Snake). This SIM, and the student artwork inspired by it, will help to visualize environmental-water changes in the central Rocky Mountains and will provide the essential inspiration and tools for Wyoming art students to design biological-driven creative explorations. Each art class will receive different fluvial system conditions, allowing for greater understanding of river system interactions. Artwork will return to the University of Wyoming for a STE{A}M Exhibition inspired by Wyoming's varying fluvial systems. It is our hope that new generations of science and art critical thinkers will not only explore questions of `why' and `how' scientific phenomena occur, but also `how' to better predict, conserve and study invaluable artifacts, and visualize conditions which allow for better control of scientific outcomes and public understanding.

  8. Full-wave receiver architecture for the homodyne motion sensor

    Science.gov (United States)

    Haugen, Peter C; Dallum, Gregory E; Welsh, Patrick A; Romero, Carlos E

    2013-11-19

    A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

  9. Full-wave receiver architecture for the homodyne motion sensor

    Energy Technology Data Exchange (ETDEWEB)

    Haugen, Peter C.; Dallum, Gregory E.; Welsh, Patrick A.; Romero, Carlos E.

    2015-09-29

    A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

  10. Phase Noise Tolerant QPSK Receiver Using Phase Sensitive Wavelength Conversion

    DEFF Research Database (Denmark)

    Da Ros, Francesco; Xu, Jing; Lei, Lei

    2013-01-01

    A novel QPSK receiver based on a phase noise reduction pre-stage exploiting PSA in a HNLF and balanced detection is presented. Receiver sensitivity improvement over a conventional balanced receiver is demonstrated.......A novel QPSK receiver based on a phase noise reduction pre-stage exploiting PSA in a HNLF and balanced detection is presented. Receiver sensitivity improvement over a conventional balanced receiver is demonstrated....

  11. The stability of a terahertz receiver based on a superconducting integrated receiver

    International Nuclear Information System (INIS)

    Ozhegov, R V; Gorshkov, K N; Gol'tsman, G N; Kinev, N V; Koshelets, V P

    2011-01-01

    We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4-8 GHz offered a noise equivalent temperature difference of 10 ± 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s.

  12. The stability of a terahertz receiver based on a superconducting integrated receiver

    Energy Technology Data Exchange (ETDEWEB)

    Ozhegov, R V; Gorshkov, K N; Gol' tsman, G N [Department of Physics, Moscow State Pedagogical University, Moscow 119992 (Russian Federation); Kinev, N V; Koshelets, V P, E-mail: Ozhegov@rplab.ru [Institute of Radio Engineering and Electronics, 125009 Moscow (Russian Federation)

    2011-03-15

    We present the results of stability testing of a terahertz radiometer based on a superconducting receiver with a SIS tunnel junction as the mixer and a flux-flow oscillator as the local oscillator. In the continuum mode, the receiver with a noise temperature of 95 K at 510 GHz measured over the intermediate frequency (IF) passband of 4-8 GHz offered a noise equivalent temperature difference of 10 {+-} 1 mK at an integration time of 1 s. We offer a method to significantly increase the integration time without the use of complex measurement equipment. The receiver observed a strong signal over a final detection bandwidth of 4 GHz and offered an Allan time of 5 s.

  13. Apparatus for delivering and receiving radioactive gas

    International Nuclear Information System (INIS)

    Dansky, B.; Epifano, L.; Farella, R.

    1980-01-01

    An apparatus for delivering and receiving gas to and from a patient, such as for lung ventilation studies. In accordance with the invention there is provided a restrictive breathing chamber adapted for coupling to the patient's breathing organs. A system, including a first check valve, is provided for coupling the breathing chamber to an inflatable gas receptacle so as to allow flow only toward the inflatable gas receptacle. Active gas input apparatus, including a second check valve, is also coupled to the breathing chamber, the second check valve allowing flow only toward the breathing chamber means. First and second auxiliary tubes and a gas filter are also provided. A system is provided for coupling the first auxiliary tube from the inflatable receptacle through the gas filter and to an ambient air environment. The second auxiliary tube is coupled from the inflatable receptacle to an ambient air environment. Finally, a gas pump is switchably coupled as between the first and second auxiliary tubes and operative to selectively cause gas flow in the first auxiliary tube toward the ambient environment, and in the second auxiliary tube toward the inflatable receptacle. A gas trap structure is also disclosed

  14. Patrick Janot receives the CNRS silver medal

    CERN Multimedia

    2005-01-01

    Patrick Janot during the award ceremony. (Photo Schwemling, Paris) On 25 November, Patrick Janot of the CERN Physics Department received the CNRS silver medal for IN2P3 (Institut national de physique nucléaire et de physique des particules). This prize, one of the most prestigious awarded by the French research centre, is given to scientists for the 'originality, quality and importance of their work, as recognised both nationally and internationally'. Patrick Janot joined the ALEPH collaboration, one of the four experiments at LEP, then under construction, in 1987. First a CERN Fellow, he went on to work for the CNRS at LAL in 1989. Together with his team, he developed innovative algorithms for the reconstruction of events. This work and others earned him the bronze CNRS medal in 1993, which is awarded to scientists for their first achievements. In 1997, he became a permanent physicist at CERN, where he continued to work for ALEPH. He was appointed LEP scientific co-ordinator for the last two years of the ac...

  15. CERN safety expert receives international award

    CERN Multimedia

    2005-01-01

    On 18 December 2004, the President of the Swiss Electro-technical Committee, Martin Reichle (left), presented the award to Helmut Schönbacher. Helmut Schönbacher, of the Safety Commission at CERN, has received, the "1906 Award" of the International Electrotechnical Commission (IEC) for his standardisation work on the influence of ionizing radiation on insulating materials. From 1986 until 2004, Schönbacher was leader of a working group on radiation composed of internationally recognised experts. It edited standards of the IEC 60544 series on the determination of the effects of ionizing radiation on electrical insulating materials. The working group also edited three IEC Technical Reports on the determination of long-term radiation ageing in polymers. This standardisation work and long-term experience from CERN on the radiation ageing of materials also contributed to research coordination programmes of the International Atomic Energy Agency (IAEA). From 1968 until 1988, Schönbacher was a member of the Rad...

  16. Paterson Receives 2004 Walter H. Bucher Medal

    Science.gov (United States)

    Jackson, Ian

    2005-01-01

    Mervyn S. Paterson received the Bucher Medal at the 2004 Fall Meeting Honors Ceremony on 15 December, in San Francisco, California. The medal is given for original contributions to the basic knowledge of the crust and lithosphere. Citation. It is the nature of modern research in the Earth sciences that observations of natural phenomena are often made and interpreted through the prism provided by the enabling sciences and technologies. Thus it has been with Mervyn Paterson's career. His undergraduate training in engineering in Adelaide formed the basis for his Ph.D. study of X-ray line-broadening in cold-worked metals under Orowan at Cambridge. This interest in the deformation of metals was fostered during his employment at the Aeronautical Research Laboratories in Melbourne and by postdoctoral experience at the Institute of Metals at the University of Chicago. Mervyn's general background in engineering and his particular interest in mechanical behavior have underpinned a distinguished career at the Australian National University in the experimental deformation of rocks, providing fundamental new insight into the mechanical behavior of the Earth's crust.

  17. Every second cancer patient receives radiotherapy

    International Nuclear Information System (INIS)

    Ojala, A.

    1996-01-01

    Radiotherapy to treat cancer was given for the first time exactly one hundred years ago. Today, radiotherapy and surgery are the two main modes of treating cancer. One in two cancer patients receives radiotherapy at some point during the course of treatment for the disease. Radiotherapy is applied most commonly in cases where surgery is not possible. Moreover, these two modes of treatment are often used together to supplement each other. About half of new cancer cases detected today can be ordered. The estimate given by the EU for cancers cured is 45 per cent, which is divided between the various treatment modes as follows: surgery 22 %, radiotherapy 12 %, surgery plus radiotherapy 6 %, and drug therapy 6 %. In addition to curative treatment, radiotherapy plays a crucial role in palliative treatment, i.e. treatment that alleviates symptoms. The sensitivity of malignant tumours to radiotherapy varies over a wide range; the same is true for healthy tissues. Radiotherapy can only be used to cure a tumour that is more sensitive to radiation than the surrounding healthy tissue. The tumour must also be sufficiently small in size and limited to a relatively small area. (orig.)

  18. Mantle transition zone beneath northeast China from P-receiver function

    Science.gov (United States)

    Zhang, R.; Wu, Q.

    2015-12-01

    We used receiver functions to examine lateral topographical variations on the 410- and 660-km beneath northeast China and particularly the Kuril-Japan arc junctions. Compared to other receiver functions studies, our analysis was based on greater station coverage of higher density by combining all recent seismic arrays so far deployed in northeast China. Our image shows that the 410-km is featured by a ~10-20 km uplift extending in the NNE direction beneath some areas of the Quaternary basaltic rocks distributed at Abaga and at Wudalianchi. The Clapeyron slope of the olivine phase transiton at 410-km suggests that the uplift is compatible with a negative thermal anomaly. We also confirm a significant depression of the 660 from the Changbai volcanism in the north to Korea in the south along the NW-SE direction. The depression is also accompanied by an uplift of the 660 to the west. The shallow 660-km discontinuity is also particularly detected beneath the Kuril-Japan arc junctions, while it was not detected before. The thermal anomaly at 410 km depth is most likely a remnant of a detached mantle lithosphere that recently sank to depth, thus providing robust evidence for the source and evolution of these basalts. The depression of the 660-km discontinuity may support that the subducting Pacific slab bends sharply and becomes stagnant when it meets strong resistance at a depth of about 670 km. After accumulation to a great extent the stagnant slab finally penetrates into the lower mantle. Combined with the previous triplicated studies, the shallow 660-km may suggest that descending Pacific slab at its leading and junction edges might be accommodated by a tearing near a depth of 660 km. Acknowledgements. Two liner seismic arrays were deployed by the Institute of Geophysics, China Earthquake Administration. The data of the permanent stations were provided by the Data Management Centre of China, National Seismic Network at the Institute of Geophysics, China Earthquake

  19. Design and simulation analysis of non-receiver aware and receiver ...

    African Journals Online (AJOL)

    We present multicast extensions to our recently proposed Location Prediction Based Routing (LPBR) protocol, referred to as NR-MLPBR and R-MLPBR, to simultaneously reduce the number of multicast tree discoveries and number of links per tree and/or the hop count per source-receiver path in mobile ad hoc networks ...

  20. Qualification test for the flexible receiver

    International Nuclear Information System (INIS)

    Keller, C.M.

    1994-01-01

    This document provides the test plan and procedures to certify and design verify the 42 inch and 4--6 inch Flexible Receiver (FR) is a safety class 3 system. Verification of the design will be handled in two parts. The first part will be to show that it meets design requirements set forth by documents and the second part will perform test(s) to verify its operational aspects. To qualify the design of the FR systems for field use this test will demonstrate environmentally safe removal of a Tank Farm pump mock-up from a Tank Farm riser mock-up. Testing will also demonstrate the performance of supporting equipment. The FR and the Secondary Bagging (SB) equipment shall be tested to verify successful operation of the equipment to the following criteria: The FR can be placed on a riser and connections made to the supporting equipment; The FR bag can accept equipment and be successfully sealed; The SB system encases the seal of the primary FR bag; The flexible bag(s) do not tear and maintain integrity during the entire test; The FR control system operates in the fail safe forced sequence mode; The FR control system will operate in the manual override mode (out of sequence operations); The CCTV Video system monitors and records the removal of the test item; The spray wash system operates without leaks and effectively provides coverage; The item being removed can be reinserted to a depth of 8 feet and the bag reinstalled onto the vertical bag supports; and The system prohibits momentary mechanical fluctuations due to the application of system power, including power interruptions

  1. Crustal Structure beneath Alaska from Receiver Functions

    Science.gov (United States)

    Zhang, Y.; Li, A.

    2017-12-01

    The crustal structure in Alaska has not been well resolved due to the remote nature of much of the state. The USArray Transportable Array (TA), which is operating in Alaska and northwestern Canada, significantly increases the coverage of broadband seismic stations in the region and allows for a more comprehensive study of the crust. We have analyzed P-receiver functions from earthquake data recorded by 76 stations of the TA and AK networks. Both common conversion point (CCP) and H-K methods are used to estimate the mean crustal thickness. The results from the CCP stacking method show that the Denali fault marks a sharp transition from thick crust in the south to thin crust in the north. The thickest crust up to 52 km is located in the St. Elias Range, which has been formed by oblique collision between the Yakutat microplate and North America. A thick crust of 48 km is also observed beneath the eastern Alaska Range. These observations suggest that high topography in Alaska is largely compensated by the thick crust root. The Moho depth ranges from 28 km to 35 km beneath the northern lowlands and increases to 40-45 km under the Books Range. The preliminary crustal thickness from the H-K method generally agrees with that from the CCP stacking with thicker crust beneath high mountain ranges and thinner crust beneath lowlands and basins. However, the offshore part is not well constrained due to the limited coverage of stations. The mean Vp/Vs ratio is around 1.7 in the Yukon-Tanana terrane and central-northern Alaska. The ratio is about 1.9 in central and southern Alaska with higher values at the Alaska Range, Wrangell Mountains, and St. Elias Range. Further data analyses are needed for obtaining more details of the crustal structure in Alaska to decipher the origin and development of different tectonic terranes.

  2. Hypoglycaemia monitoring in a medical receiving ward.

    Science.gov (United States)

    Ellis, Ryan

    2015-01-01

    It has been suggested that current care for diabetes inpatients remains inadequate and that greater attention is required for high quality management. In this project the aspect of hypoglycaemia was studied in a busy medical receiving ward at the Glasgow Royal Infirmary. A large proportion of inpatients have diabetes and episodes of hypoglycaemia experienced by this population can delay discharge and indeed be detrimental to health. Thus it is important from both an organisational and patient perspective to manage this population well. In this project BM machine data was analysed to identify patients who were hypoglycaemic. These patients were then tracked down to study the subsequent management and compared this against recommended guidance. Following this an intervention was made to promote identification, management, documentation, and prevention of hypoglycaemia. This was deliberately a simple intervention involving discussions with staff and provision of basic documented guidance next to every BM machine. In the first phase 17 patients were identified and in a second and third phase 16 patients each time were further identified. Patients in the study were both type 1 and type 2 diabetics. Initial results in phase I were compared to results in phase II and III respectively. This intervention produced significant improvements in management with correct monitoring of low BMs (i.e. upon identification of low BM repeat within 1 hour) improving from 47% to 100% (for Phase II and III). Also, recording of preventative measures of hypoglycaemia improved from 35% to 88% and 94% with an improvement from 24% to 69% and 75% in recording of treatment given if needed. In conclusion, the study successfully demonstrated that simple measures can significantly improve the quality care of inpatient diabetic patients in relation to hypoglycaemia management.

  3. Investigation of the receivability of VLF standard time and frequency ...

    African Journals Online (AJOL)

    This study is on the receivability of some standard time and frequency signals in the VLF range in Zaria, Nigeria. Signal field strengths of various stations were estimated, and a suitable radio receiving system was set up to receive them. Using the assembled receiver, some of the transmissions, including the Omega W/L at ...

  4. 37 CFR 1.412 - The United States Receiving Office.

    Science.gov (United States)

    2010-07-01

    ... Information § 1.412 The United States Receiving Office. (a) The United States Patent and Trademark Office is a Receiving Office only for applicants who are residents or nationals of the United States of America. (b) The... “United States Receiving Office” or by the abbreviation “RO/US.” (c) The major functions of the Receiving...

  5. The Tri-Agency Climate Education (TrACE) Catalog: Promoting collaboration, effective practice, and a robust portfolio by sharing educational resources developed across NASA, NOAA & NSF climate education initiatives

    Science.gov (United States)

    McDougall, C.; Martin, A.; Givens, S. M.; Yue, S.; Wilson, C. E.; Karsten, J. L.

    2012-12-01

    The Tri-Agency Climate Education (TrACE) Catalog is an online, interactive, searchable and browsable web product driven by a database backend. TrACE was developed for and by the community of educators, scientists, and Federal agency representatives involved in a tri-agency collaboration for climate education. NASA, NOAA, and NSF are working together to strategically coordinate and support a portfolio of projects focused on climate literacy and education in formal and informal learning environments. The activities of the tri-agency collaboration, including annual meetings for principal investigators and the ongoing development of a nascent common evaluation framework, have created a strong national network for effectively engaging diverse audiences with the principles of climate literacy (see Eos Vol. 92, No. 24, 14 June 2011). TrACE is a tool for the climate education community that promotes the goals of the tri-agency collaboration to leverage existing resources, minimize duplicate efforts, and facilitate communication among this emergent community of scientists and educators. TrACE was born as "The Matrix," a product of the 2011 Second Annual NASA, NOAA and NSF Climate Change Education Principal Investigators Meeting (see McDougall, Wilson, Martin & Knippenberg, 2011, Abstract ED21B-0583 presented at 2011 Fall Meeting, AGU, San Francisco, CA.) Meeting attendees were asked to populate a pen-and-paper matrix with all of the activities or deliverables they had created or anticipated creating as part of their NOAA/NASA/NSF-funded project. During the 2012 Third Annual Tri-Agency PI Meeting, projects were given the opportunity to add and update their products and deliverables. In the intervening year, the dataset comprising the Matrix was converted to a MySQL database, with a standardized taxonomy and minimum criteria for inclusion, and further developed into the interactive TrACE Catalog. In the fall of 2012, the TrACE Catalog web product will be made publicly

  6. 12 December 2012 - US NSF Physics Division Acting Director D. Caldwell signing the guest book with Adviser for the US R. Voss and Head of International Relations F. Pauss; CMS Collaboration Spokesperson J. Incandela and ATLAS Deputy Spokesperson A. Lankford present.

    CERN Multimedia

    Samuel Morier-Genoud

    2012-01-01

    12 December 2012 - US NSF Physics Division Acting Director D. Caldwell signing the guest book with Adviser for the US R. Voss and Head of International Relations F. Pauss; CMS Collaboration Spokesperson J. Incandela and ATLAS Deputy Spokesperson A. Lankford present.

  7. 76 FR 52354 - Notice of Permit Application Received Under the Antarctic Conservation Act of 1978

    Science.gov (United States)

    2011-08-22

    ... can be broken and release plastic into the ocean. (2) Fishing nets: (a) Plankton nets come in a... in ASPA 149-Cape Shirreff, Livingston Island by the Antarctic Marine Living Resources (AMLR) Program... release of a designated pollutant in Antarctica, and for the release of waste in Antarctica. NSF has...

  8. Superior Coherent Receivers for AF Relaying with Distributed Alamouti Code

    KAUST Repository

    Khan, Fahd Ahmed

    2012-01-01

    Coherent receivers are derived for a pilot-symbol aided distributed Alamouti-coded system with imperfect channel state information. The derived coherent receivers do not perform channel estimation but rather use the received pilot signals for decoding. The derived receiver metrics use the statistics of the channel to give improved performance. The performance is further improved by using the decision history. Simulation results show that a performance gain of up to 1.8 dB can be achieved for the new receivers with decision history as compared with the conventional mismatched coherent receiver. © 2011 IEEE.

  9. Computer‐Assisted Library Instruction and Face‐to‐Face Library Instruction Prove Equally Effective for Teaching Basic Library Skills in Academic Libraries. A review of: Zhang, Li, Watson, Erin M. and Banfield, Laura. ʺThe Efficacy of Computer‐Assisted Instruction Versus Face‐to‐Face Instruction in Academic Libraries: A Systematic Review.ʺ The Journal of Academic Librarianship 33.4 (July 2007: 478‐484.

    Directory of Open Access Journals (Sweden)

    Stephanie Walker

    2008-03-01

    , and case studies, with a sample size greater than one and with pre‐ and post‐test measurements;study participants had to be academic library patrons; the study needed to compare CAI and face‐to‐face instruction; and both the students’ information skills and reactions to the instruction had to be measured. This left 40 unique studies, which were then retrieved in full text. Next, studies were selected to meet the inclusion criteria further using the QUOROM format, a reporting structure used for improving the quality of reports of meta‐analyses of randomised trials (Moher et al 1896‐1900. Evaluation of methodological quality was then done using a dual method: authors Watson and Zhang assessed the studies independently, each using the “Checklist for Study Quality” developed by Downs and Black (Downs and Black 377‐384, adapted slightly to remove non‐relevant questions. After analysis, when additional information was needed, original study authors werecontacted. Finally, ten studies were included in the analysis.The instruction sessions covered many topics, such as catalog use, reading citations, awareness of library services and collections, basic searching of bibliographic databases, and more. But all could qualify as basic, rather than advanced, library instruction. All studies did pre‐ and posttests of students’ skills – some immediatelyafter instruction, and others with a time lapse of up to six weeks. Most authors created their own tests, though one adapted an existing scale. Individual performance improvement was not studied in many cases due to privacy concerns.Main Results ‐ Nine of the ten studies found CAI and face‐to‐face instruction equally effective; the tenth study found face to‐face instruction more effective. The students’ reaction to instruction methods varied – some students felt more satisfied with face‐to‐face instruction and felt that they learned better, while other studies found that students receiving CAI

  10. Identification of sugarcane interspecies hybrids with RAPDs | Zhang ...

    African Journals Online (AJOL)

    African Journal of Biotechnology. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 7, No 8 (2008) >. Log in or Register to get access to full text downloads.

  11. Scheduling irrigation for jujube ( Ziziphus jujuba Mill. ) | Zhang ...

    African Journals Online (AJOL)

    This study was performed to select suitable indicator for scheduling the irrigation of jujube (Ziziphus jujuba Mill.) grown in the Loess Plateau. The relationships between plant-based indicators and soil matrix potential as well as meteorological factors of jujube under deficit irrigation compared with well irrigation were ...

  12. Why Tu Youyou Makes Less Money Than Zhang Ziyi?

    Science.gov (United States)

    Suo, Qinghui; Liu, Yang; Zhang, Daming

    2017-08-01

    Scientists normally earn less money than many other professions which require a similar amount of training and qualification. The economic theory of marginal utility and cost-benefit analysis can be applied to explain this phenomenon. Although scientists make less money than entertainment stars, the scientists do research work out of their interest and they also enjoy a much higher reputation and social status in some countries.

  13. Canonical Ensemble Model for Black Hole Radiation Jingyi Zhang

    Indian Academy of Sciences (India)

    Canonical Ensemble Model for Black Hole Radiation. 575. For entropy, there is no corresponding thermodynamical quantity, without loss of generalization. Let us define an entropy operator. ˆS = −KB ln ˆρ. (11). Then, the mean value of entropy is. S ≡〈ˆS〉 = tr( ˆρ ˆS) = −KBtr( ˆρ ln ˆρ). (12). For ideal gases, let y = V , then the ...

  14. By: Kenny Zhang Report Type: Final Technical Report *Date

    International Development Research Centre (IDRC) Digital Library (Canada)

    Kenny Zhang

    2014-05-30

    May 30, 2014 ... Dr. David Zweig, Chair Professor, Division of Social Science, Hong Kong ... Keith Godin, Director, BC Ministry of Jobs, Tourism and Innovation, Keith. ..... 23) Media reports often quoted researchers of the project on stories ...

  15. Biological advances in Bergenia genus plant | Zhang | African ...

    African Journals Online (AJOL)

    Bergenia, a genus belonging to Saxifragaceae family, is one of the most important medicinal plants, has high application values for human. Currently, wild Bergenia is becoming lacking, due to destruction of ecological environment and excessive excavation; furthermore, the study on it is not deep enough, many related ...

  16. Factors affecting soil erosion in Beijing mountain forestlands | Zhang ...

    African Journals Online (AJOL)

    The role of regions, vegetation types and forest stand density in controlling soil erosion were investigated in Beijing mountain forest, China. The main objective was to develop some models to estimate soil erosion under different forest conditions including regions, vegetation type, and stand density as influenced by artificial ...

  17. C. Huang , G. Zhao , HW Zhang & YQ Chen

    Indian Academy of Sciences (India)

    the host stars' birth cloud with higher abundance of Si will make the cloud ... with the metallicity distribution of nearby field F, G, or K stars which are known to .... In the early stage of planetesimal accumulation, the rate of growth of planetesimal.

  18. FFT Based VLSI Digital One Bit Electronic Warfare Receiver

    National Research Council Canada - National Science Library

    Chien-In, Henry

    1998-01-01

    ... (1 GHz) digital receiver designed for electronic warfare applications. The receiver can process two simultaneous signals and has the potential for fabrication on a single multi-chip module (MCM...

  19. A Correlating Receiver for OFDM at Low SNR

    NARCIS (Netherlands)

    Kokkeler, Andre B.J.; Smit, Gerardus Johannes Maria

    By extending OFDM symbols, acceptable BER performance can be achieved at low SNRs. Two alternative differential receiver architectures are presented, a receiver based on a FX correlator (Fourier transformation before correlation) and based on an XF correlator (correlation before Fourier

  20. Initial results for compressive sensing in electronic support receiver systems

    CSIR Research Space (South Africa)

    Du Plessis, WP

    2011-04-01

    Full Text Available determined by the antenna and microwave system comprising the transmitter and receiver, while the instantaneous bandwidth is mainly determined by the Analog-to-Digital Converter (ADC) in the receiver. A radar can thus operate at any frequency within its... Electronic/Electromagnetic Support Measures (ESM) was used historically [1], [2]. Modern ES receiver systems are based on digital receivers allowing powerful signal processing techniques to be used [3], [4]. Recent developments in sampling technology...

  1. 20 CFR 404.1042 - Wages when paid and received.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Wages when paid and received. 404.1042... DISABILITY INSURANCE (1950- ) Employment, Wages, Self-Employment, and Self-Employment Income Wages § 404.1042 Wages when paid and received. (a) In general. Wages are received by an employee at the time they are...

  2. 5 CFR 551.425 - Time spent receiving medical attention.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Time spent receiving medical attention... Relation to Other Activities § 551.425 Time spent receiving medical attention. (a) Time spent waiting for and receiving medical attention for illness or injury shall be considered hours of work if: (1) The...

  3. THE CORRELATED TRACK RECEIVER OF TONE TRACK CIRCUITS

    Directory of Open Access Journals (Sweden)

    K. V. Goncharov

    2011-05-01

    Full Text Available The work is devoted to further improvement of processing algorithm of checking signals of rail line. The simulation modeling of correlation track receiver of tone rail circuits has been executed; the benchmark analysis of correlation receiver and direct amplifier receiver has been executed.

  4. Noise and intercept point calculation for modern radio receiver planning

    DEFF Research Database (Denmark)

    Iversen, Christian Rye; Kolding, T. E.

    2001-01-01

    The paper presents analytical expressions for determining noise and intercept points for cascaded radio receiver stages. The theory allows for active receiver stages with frequency selectivity and flexible impedance levels. This makes the method highly usable for planning of modem receivers where...

  5. IMPROVEMENT WAYS OF ACCOUNTING AND INTERNAL AUDIT OF ENTERPRISE RECEIVABLES

    Directory of Open Access Journals (Sweden)

    V. D. Zelikman

    2014-06-01

    Full Text Available Purpose. Determination and substantiation of ways to improve accounting and internal audit of receivables at the enterprises. Methodology.The basic principles and ways for improvement of accounting and internal audit systems that should help Ukrainian enterprises to optimize receivables are considered. Findings. It is proved that the receivables optimization is possible on the basis of improving its accounting and internal audit. The basic ways for improvement of accounting and internal audit of receivable are determined. They are: improvement of normative coverage of receivables at the enterprises; providing further harmonization of financial and tax accounting in the part of formation of the doubtful debt receivables, accounting of bad and doubtful receivables and etc. The formation of department for internal audit to control the doubtful and bad debts; providing the timely control of the receivables and payables ratio; determination and support of the optimal value of the receivables at the enterprises. Originality. Improvement of accounting and internal audit of receivables at the enterprises by the way of development of internal audit system and optimization of the receivables size. Practical value. The proposed recommendations will improve the accounting and internal audit system of receivables at the enterprises of Ukraine.

  6. 75 FR 26843 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-05-12

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of any petition or its final disposition. DATES: Comments on petitions received must...

  7. Communications Satellite Receiver Systems for Public Schools: A Technical Primer.

    Science.gov (United States)

    Texas Education Agency, Austin.

    Designed to aid school districts contemplating use of some of the telecommunications services now available by satellite, this document contains information on home satellite receiving dishes (Television Receive-Only--TVROs), which can receive radio signals carrying television, sound, and data. This information includes: some factors involved in…

  8. Communications/Electronics Receiver Performance Degradation Handbook (Second Edition)

    Science.gov (United States)

    1975-08-01

    receiver to another in the Rf and IF filter characteristics modify the transfer of inter- forence power through the receiver to the IF output, and so the...modulation system the transmitted and received messages arce in general different bemaus* of small inte, forence or noise perturbations. The probability of

  9. 33 CFR 17.01-10 - Authority to receive gifts.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Authority to receive gifts. 17.01... GENERAL UNITED STATES COAST GUARD GENERAL GIFT FUND General Provisions § 17.01-10 Authority to receive gifts. (a) The Commandant, United States Coast Guard, may accept, receive, hold, or administer gifts...

  10. Sideband ratio in double sideband receivers with a Michelson interferometer

    NARCIS (Netherlands)

    Romanini, M.; Baryshev, A. M.; Hesper, R.; Mena, F. P.; Wild, W.

    2007-01-01

    Terahertz heterodyne receivers typically use double sideband (DSB) mixers. The precise knowledge of the receiver sideband ratio (SBR) is a fundamental requirement for the calibration of the data taken with this type of receivers. At the moment the spectroscopic techniques developed for submillimeter

  11. NIH/NSF accelerate biomedical research innovations

    Science.gov (United States)

    A collaboration between the National Science Foundation and the National Institutes of Health will give NIH-funded researchers training to help them evaluate their scientific discoveries for commercial potential, with the aim of accelerating biomedical in

  12. NSF tandem stack support structure deflection characteristics

    International Nuclear Information System (INIS)

    Cook, J.

    1979-12-01

    Results are reported of load tests carried out on the glass legs of the insulating stack of the 30 MV tandem Van de Graaff accelerator now under construction at Daresbury Laboratory. The tests to investigate the vulnerability of the legs when subjected to tensile stresses were designed to; establish the angle of rotation of the pads from which the stresses in the glass legs may be calculated, proof-test the structure and at the same time reveal any asymmetry in pad rotations or deflections, and to confirm the validity of the computer design analysis. (UK)

  13. The pressure vessel for the NSF tandem

    International Nuclear Information System (INIS)

    Jones, C.W.

    1979-04-01

    The pressure vessel is a major component of the 30 MV tandem Van de Graaff electrostatic accelerator to be used in nuclear structure research at Daresbury Laboratory. The accelerator will be capable of accelerating the full range of ions in the form of a beam. Acceleration takes place in a vertical evacuated tube (beam tube) by means of a high potential on a terminal at the central position, the terminal and beam tube assembly being supported by an insulated stack structure within the pressure vessel. Under operating conditions the vessel is filled with sulphur hexafluoride gas (SF 6 ) at high pressure which acts as an insulating medium between the centre terminal and the vessel wall. The vessel is situated inside a concrete tower which besides supporting the injector room above the vessel also acts as radiation shielding around the accelerator. The report covers: functional requirements; fundamental considerations with regard to the design and procurement; detail design; materials; manufacture; acceptance test; surface treatment; final leak test. (U.K.)

  14. NSF-RANN trace contaminants abstracts

    International Nuclear Information System (INIS)

    Copenhaver, E.D.; Harnden, D.S.

    1976-10-01

    Specific areas of interest of the Environmental Aspects of Trace Contaminants Program are organic chemicals of commerce, metals and organometallic compounds, air-borne contaminants, and environmental assay methodology. Fifty-three abstracts of literature on trace contaminants are presented. Author, keyword, and permuted title indexes are included

  15. NSF Conference Report for FY12

    Data.gov (United States)

    National Science Foundation — OMB Memorandum M-12-12 requires federal agencies to report by January 31st of each year, information on all agency-sponsored conferences from the previous year where...

  16. Plasma science and engineering at NSF

    International Nuclear Information System (INIS)

    Goldberg, L.S.

    1996-01-01

    The author gives a perspective of the breadth of fundamental plasma science and engineering that the National Science Foundation supports through its Directorates for Engineering, Mathematical and Physical Sciences, Geosciences, and the Office of Polar Programs. He plans also to discuss the diverse interests and commitment within the Foundation to maintaining the vitality of research and education activities in this field

  17. A Framework and Specific Operation of Chinese Indigenous Leadership Research Based on the Research about ZHANG Ruimin%中国本土领导研究的一种框架及操作:基于张瑞敏个案的研究过程示例

    Institute of Scientific and Technical Information of China (English)

    徐立国; 席酉民; 葛京; 宋合义

    2012-01-01

    基于对中国本土领导的界定与分析,提出中国本土领导研究的一种框架及操作,即从“领导如何成长、如何发挥作用及领导的本质”3个开放性问题出发,基于质性研究策略,采用以问题导向的探索性建构主义扎根理论方法,对中国本土领导数据进行搜集与整理.借鉴POPPER的4段式科学研究逻辑,对数据进行分析,不断地对问题进行诠释,并发现新的问题,从不断的循环中建构构念,发掘潜在的扎根理论,与现有领导理论进行对比,最终形成中国本土领导理论.%Chinese unique history and culture determine that practice and research of Chinese indigenous leadership are unique. Based on the definition and analysis of Chinese indigenous leadership research, we propose a framework and specific operation of Chinese indigenous leadership research. From three open-ended questions, based on qualitative research, using problem-oriented exploratory constructive grounded theory, we collect and sort out the data of Chinese indigenous leadership research. Following Popper's Four-scientific logic, we analyze the data, and interpret problems continuously, find new problems, construct constructs from the continuous interpreting circle, explore the potential of grounded theory, and compare with the existing leadership theories to form Chinese indigenous leadership theories. Based on the case of ZHANG Ruimin, we use the framework and specific operation and present the specific research venation of Chinese indigenous leadership research.

  18. The Center for Astronomy Education (CAE) Ushers in a New Community-Based Model for Astronomy Education Research with the NSF Funded CCLI Phase III Collaboration of Astronomy Teaching Scholars (CATS) Program

    Science.gov (United States)

    Brissenden, Gina; Impey, C.; Prather, E.; Lee, K.; Duncan, D.

    2009-01-01

    The Center for Astronomy Education (CAE) has been devoted to improving teaching & learning in Astro 101 by creating research-validated curriculum & assessment instruments for use in Astro 101 & by providing Astro 101 instructors professional development opportunities to increase their pedagogical content knowledge & instructional skills at implementing these curricula & assessment materials. To create sustainability and further expand this work, CAE, in collaboration with other national leaders in astronomy education & research, developed the Collaboration of Astronomy Teaching Scholars (CATS) Program. The primary goals of CATS are to: 1) increase the number of Astro 101 instructors conducting fundamental research in astronomy education 2) increase the amount of research-validated curriculum & assessment instruments available for use in Astro 101 3) increase the number of people prepared to develop & conduct their own CAE Teaching Excellence Workshops In our first year we have concluded a national study assessing the teaching & learning of Astro 101 & the effect of interactive instruction. We have begun the initial analysis of the demographics data of this study. We have begun a classroom research validation study on the use of the "ClassAction” electronic learning system. We have begun to analyze data from two different studies on students’ attitudes & understanding of science to inform the creation of an assessment instrument designed specifically for Astro 101 to evaluate the effectiveness of our instruction in improving students’ attitudes & beliefs about science. We have also begun the development of a Solar System Concept Inventory. Additionally the development of the Solar System Concept Inventory and research into students’ beliefs and reasoning difficulties on topics in Cosmology are well underway. We acknowledge the NSF for funding under Award No. 0715517, a CCLI Phase III Grant for the Collaboration of Astronomy Teaching Scholars (CATS) Program.

  19. The Center for Astronomy Education (CAE) and Our NSF Funded CCLI Phase III Collaboration of Astronomy Teaching Scholars (CATS) Program: Updates to Our New Community-Based Model for Astronomy Education Research

    Science.gov (United States)

    Brissenden, Gina; Impey, C.; Prather, E. E.; Lee, K. M.; CATS

    2010-01-01

    The Center for Astronomy Education (CAE) has been devoted to improving teaching & learning in Astro 101 by creating research-validated curriculum & assessment instruments for use in Astro 101 & by providing Astro 101 instructors professional development opportunities to increase their pedagogical content knowledge & instructional skills at implementing these curricula & assessment materials. To create sustainability and further expand this work, CAE, in collaboration with other national leaders in astronomy education & research, developed the Collaboration of Astronomy Teaching Scholars (CATS) Program. The primary goals of CATS are to: 1) increase the number of Astro 101 instructors conducting fundamental research in astronomy education 2) increase the amount of research-validated curriculum & assessment instruments available for use in Astro 101 3) increase the number of people prepared to develop & conduct their own CAE Teaching Excellence Workshops In our second year we have concluded a national study assessing the contribution students’ personal characteristics make to student learning gains and the effectiveness of interactive learning strategies. We have results from our classroom research validation study on the use of the "ClassAction” electronic learning system. We have begun creation of an assessment instrument designed specifically for Astro 101 to evaluate the effectiveness of our instruction in improving students’ attitudes & beliefs about science, and which is being informed by several of our studies and community input. We have also begun field-testing of our Solar System Concept Inventory. Additionally research into students’ beliefs and reasoning difficulties on topics in Cosmology is underway. We acknowledge the NSF for funding under Award No. 0715517, a CCLI Phase III Grant for the Collaboration of Astronomy Teaching Scholars (CATS) Program.

  20. BPSK Receiver Based on Recursive Adaptive Filter with Remodulation

    Directory of Open Access Journals (Sweden)

    N. Milosevic

    2011-12-01

    Full Text Available This paper proposes a new binary phase shift keying (BPSK signal receiver intended for reception under conditions of significant carrier frequency offsets. The recursive adaptive filter with least mean squares (LMS adaptation is used. The proposed receiver has a constant, defining the balance between the recursive and the nonrecursive part of the filter, whose proper choice allows a simple construction of the receiver. The correct choice of this parameter could result in unitary length of the filter. The proposed receiver has performance very close to the performance of the BPSK receiver with perfect frequency synchronization, in a wide range of frequency offsets (plus/minus quarter of the signal bandwidth. The results obtained by the software simulation are confirmed by the experimental results measured on the receiver realized with the universal software radio peripheral (USRP, with the baseband signal processing at personal computer (PC.

  1. Solar advanced internal film receiver; Receptor avanzado de pelicular interna

    Energy Technology Data Exchange (ETDEWEB)

    Torre Cabezas, M. de la

    1990-07-01

    In a Solar Central Internal Film Receiver, the heat absorbing fluid (a molten nitrate salt) flows in a thin film down over the non illuminated side of an absorber panel. Since the molten salt working fluid is not contained in complicated tube manifolds, the receiver design is simples than a conventional tube type-receiver resulting in a lower cost and a more reliable receiver. The Internal Film Receiver can be considered as an alternative to the Direct Absorption Receiver, in the event that the current problems of the last one can not be solved. It also describes here the test facility which will be used for its solar test, and the test plans foreseen. (Author) 17 refs.

  2. Ways to rational management of accounts receivable at enterprises

    Directory of Open Access Journals (Sweden)

    Yevtushenko N. O.

    2015-05-01

    Full Text Available This article investigated the principal reasons of management problems an account receivable of enterprises. Credit politics of management is worked out by an account receivable of enterprises. Essence of the stages of construction of rational management an account receivable of enterprises is exposed. In the article are exposed the basic elements of control system for an account receivable such as mission, aims, strategy as politics of management. The basic stages of management politics are described for an account receivable of enterprises: analysis; organization of forming of principles of credit politics, terms of delivery of credit and procedure of collection of accounts receivable; planning of the use of modern forms of refunding, and similarly control.

  3. Ultrabroadband Phased-Array Receivers Based on Optical Techniques

    Science.gov (United States)

    2016-02-26

    bandwidths, and with it receiver noise floors , are unavoidable. Figure 1. SNR of a thermally limited receiver based on Friis equation showing the...techniques for RF and photonic integration based on liquid crystal polymer substrates were pursued that would aid in the realization of potential imaging...These models assumed that sufficient LNA gain was used on the antenna to set the noise floor of the imaging receiver, which necessitated physical

  4. PENENTUAN RECEIVED DATE DENGAN LOAD-ORIENTED MANUFACRURING CONTROL

    Directory of Open Access Journals (Sweden)

    Sri Hartini

    2012-02-01

    Full Text Available Salah satu kunci kompetitif sebuah perusahaan make to order adalah ketepatan dalam pemenuhan waktu penerimaan pesanan pada konsumen yang telah dijanjikan perusahaan ( received date. Penentuan received date yang selama ini dilakukan oleh JI  kurang tepat karena hanya memperkirakan waktu sekitar 10 – 12 minggu tanpa mempertimbangkan faktor produksi. Penelitian ini merancang received date dengan model load-oriented manufacturing control dimana penentuan received date didasarkan pada perhitungan manufacturing lead time yang mempertimbangkan waktu pengiriman order ke konsumen, kapasitas yang tersedia pada tiap stasiun kerja, waktu proses pada stasiun kerja dan aliran produksi di lantai produksi. Hasil validasi perhitungan  penentuan received date order sesuai  dengan sistem produksi PT JI dan lebih valid dibanding sistem awal. Kata kunci : make to order, received date, manufacturing leadtime, load-oriented manufacturing control   One of the competitive key of a make to order company is the accuracy in fulfilling orders which has been promised by the company towards the consumers (received date. Determining received date which has been applied by JI recently is not sufficient because it only predicts 10-12 weeks of time without considering production factors. This research designs received date with load-oriented manufacturing control model where determining received date is based on calculating manufacturing lead time that considers the time needed to deliver orders to the consumer, capacity available for each work station, work station process time, and production flow within the production floor.  Validation results from the calculations for determining received date order is adjusted to PT JI  production system and is more valid than the first system. Keywords : make to order, received date, manufacturing leadtime, load-oriented manufacturing control

  5. Molecular Spectroscopy With a Compact 557-GHz Heterodyne Receiver

    DEFF Research Database (Denmark)

    Neumaier, Philipp F.-X.; Richter, Heiko; Stake, Jan

    2014-01-01

    We report on a heterodyne terahertz spectrometer based on a fully integrated 557-GHz receiver and a digital fast Fourier transform spectrometer. The receiver consists of a chain of multipliers and power amplifiers, followed by a heterostructure barrier varactor tripler that subharmonically pumps...... a membrane GaAs Schottky diode mixer. All sub-components are newly developed and optimized with regard to the overall receiver performance such as noise temperature, power consumption, weight and physical size. The receiver works at room temperature, has a double sideband noise temperature as low as 2000 K...

  6. List of documents received by the INDC Secretariat

    International Nuclear Information System (INIS)

    1987-09-01

    The Nuclear Data Section of the International Atomic Energy Agency receives documents originated by or for the International Nuclear Data Committee for distribution. This list includes all INDC documents received and distributed by the INDC Secretariat during the period January 1984 to March 1986. This list is produced directly from computer printout in two sorts: one ordered by accession number, and the other ordered by document number within each origin series (e.g. listing all INDC(SEC)-documents in one block). In addition to the INDC documents received by the INDC Secretariat for distribution, this document also lists the titles of reports received as single copies for information

  7. Personal monitoring and assessment of doses received by radiation workers

    International Nuclear Information System (INIS)

    Swindon, T.N.; Morris, N.D.

    1981-12-01

    The Personal Radiation Monitoring Service operated by the Australian Radiation Laboratory is outlined and the types of monitors used for assessment of doses received by radiation workers are described. The distribution of doses received by radiation workers in different occupational categories is determined. From these distributions, the average doses received have been assessed and the maximum likely additional increase in cancer deaths in Australia as a result of occupational exposure estimated. This increase is shown to be very small. There is, however, a considerable spread of doses received by individuals within occupational groups

  8. Frequency Estimator Performance for a Software-Based Beacon Receiver

    Science.gov (United States)

    Zemba, Michael J.; Morse, Jacquelynne Rose; Nessel, James A.; Miranda, Felix

    2014-01-01

    As propagation terminals have evolved, their design has trended more toward a software-based approach that facilitates convenient adjustment and customization of the receiver algorithms. One potential improvement is the implementation of a frequency estimation algorithm, through which the primary frequency component of the received signal can be estimated with a much greater resolution than with a simple peak search of the FFT spectrum. To select an estimator for usage in a QV-band beacon receiver, analysis of six frequency estimators was conducted to characterize their effectiveness as they relate to beacon receiver design.

  9. Accounting for Defense Logistics Agency Supply Management Receivables

    National Research Council Canada - National Science Library

    Lane, F

    1998-01-01

    .... For this part of the audit, we determined whether Defense Logistics Agency supply management receivables were accurately accounted for, classified, and reported in the Statement of Financial Position...

  10. Exploring Moho sharpness in Northeastern North China Craton with frequency-dependence analysis of Ps receiver function

    Science.gov (United States)

    Zhang, P.; Yao, H.; Chen, L.; WANG, X.; Fang, L.

    2017-12-01

    The North China Craton (NCC), one of the oldest cratons in the world, has attracted wide attention in Earth Science for decades because of the unusual Mesozoic destruction of its cratonic lithosphere. Understanding the deep processes and mechanism of this craton destruction demands detailed knowledge about the deep structure of this region. In this study, we calculate P-wave receiver functions (RFs) with two-year teleseismic records from the North China Seismic Array ( 200 stations) deployed in the northeastern NCC. We observe both diffused and concentered PpPs signals from the Moho in RF waveforms, which indicates heterogeneous Moho sharpness variations in the study region. Synthetic Ps phases generated from broad positive velocity gradients at the depth of the Moho (referred as Pms) show a clear frequency dependence nature, which in turn is required to constrain the sharpness of the velocity gradient. Practically, characterizing such a frequency dependence feature in real data is challenging, because of low signal-to-noise ratio, contaminations by multiples generated from shallow structure, distorted signal stacking especially in double-peak Pms signals, etc. We attempt to address these issues by, firstly, utilizing a high-resolution Moho depth model of this region to predict theoretical delay times of Pms that facilitate more accurate Pms identifications. The Moho depth model is derived by wave-equation based poststack depth migration on both Ps phase and surface-reflected multiples in RFs in our previous study (Zhang et al., submitted to JGR). Second, we select data from a major back azimuth range of 100° - 220° that includes 70% teleseismic events due to the uneven data coverage and to avoid azimuthal influence as well. Finally, we apply an adaptive cross-correlation stacking of Pms signals in RFs for each station within different frequency bands. High-quality Pms signals at different frequencies will be selected after careful visual inspection and adaptive

  11. Comparison of Attitudes Toward Death Between University Students Who Receive Nursing Education and Who Receive Religious Education.

    Science.gov (United States)

    Bakan, Ayse Berivan; Arli, Senay Karadag

    2018-03-22

    This study aims to compare attitudes toward death between university students who receive nursing education and who receive religious education. This study is cross-sectional in nature. It was conducted with the participation of 197 university students in a university located in the Eastern part of Turkey between June and August, 2017. Data were collected using the socio-demographic form and Turkish form of Death Attitudes Profile-Revised. Of all the students participating in the study, 52.8% received nursing education and 47.2% received religious education. It was found that majority of both groups had no education about death, or found the education they received insufficient. Besides, no significant differences were found between the students who received nursing education and who received religious education in terms of their attitudes toward death (p > 0.05). Results showed that students who received nursing education and who received religious education had similar attitudes toward death. In conclusion, the education given to students about the religious or health aspects of death in accordance with the curriculum seemed to have no effects on students' developing positive attitudes toward death.

  12. 49 CFR 1110.5 - Consideration of comments received.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 8 2010-10-01 2010-10-01 false Consideration of comments received. 1110.5 Section 1110.5 Transportation Other Regulations Relating to Transportation (Continued) SURFACE TRANSPORTATION... PROCEEDINGS § 1110.5 Consideration of comments received. All timely comments will be considered before final...

  13. Qualification test for the Flexible Receiver. Revision 1

    International Nuclear Information System (INIS)

    Keller, C.M.

    1994-01-01

    This document provides the test plan and procedures to certify and design verify the 42 in. and 4 in. -- 6 in. Flexible Receiver as a safety class 3 system. The Flexible Receiver will be used by projects W-151 and W-320 for removing equipment from tanks C-106 and Az-101

  14. Fuel Receiving and Storage Station. License application, amendment 4

    International Nuclear Information System (INIS)

    1975-04-01

    Amendment No. 4 of the application for licensing the Barnwell Fuel Processing Plant is presented. Information is included on: the quantity and characteristics of nuclear fuel assemblies which can be received and stored; specifications limiting the outside washdown of contaminated casks received for unloading; and definition of environmental monitoring program. (U.S.)

  15. Assessment of hospital-based adult triage at emergency receiving ...

    African Journals Online (AJOL)

    The study was conducted in 6 of the 7 hospitals in the region. ... gency department, the rest receive emergency patients/perform triage from .... gional Referral Hospital (government facility) with emer- ... sionals who were involved in daily initial management of ..... for receiving emergency cases can be complex especially.

  16. Qualification test for the flexible receiver. Revision 2

    International Nuclear Information System (INIS)

    Tedeschi, D.J.

    1994-01-01

    This document provides the test plan and procedures to certify and design verify the 42 double-prime and 4 double-prime-6 double-prime Flexible Receiver as a safety class 3 system. The Flexible Receiver will be used by projects W-151 and W-320 for removing equipment from tanks C-106 and AZ-101

  17. Qualification test for the flexible receiver. Revision 2

    Energy Technology Data Exchange (ETDEWEB)

    Tedeschi, D.J.

    1994-12-12

    This document provides the test plan and procedures to certify and design verify the 42{double_prime} and 4{double_prime}-6{double_prime} Flexible Receiver as a safety class 3 system. The Flexible Receiver will be used by projects W-151 and W-320 for removing equipment from tanks C-106 and AZ-101.

  18. Reconfigurable digital receiver design and application for instantaneous polarimetric measurement

    NARCIS (Netherlands)

    Wang, Z.; Krasnov, O.A.; Babur, G.P.; Ligthart, L.P.; Van der Zwan, F.

    2011-01-01

    This paper presents the development of a reconfigurable receiver to undertake challenging signal processing tasks for a novel polarimetric radar system. The field-programmable gate arrays (FPGAs)-based digital receiver samples incoming signals at intermediate frequency (IF) and processes signals

  19. 12 CFR 614.4700 - Financing foreign trade receivables.

    Science.gov (United States)

    2010-01-01

    ... OPERATIONS Banks for Cooperatives and Agricultural Credit Banks Financing International Trade § 614.4700 Financing foreign trade receivables. (a) Banks for cooperatives and agricultural credit banks, under policies adopted by their boards of directors, are authorized to finance foreign trade receivables on...

  20. Hearing Instrument using receivers with different performance characteristics

    DEFF Research Database (Denmark)

    2009-01-01

    The invention regards a signal processing device in a hearing aid, wherein the signal processing device is electrically coupled to a connection socket operable to detachably connect a receiver to the socket and whereby the signal processing device further comprise a detector operable to detect...... a characteristics of the receiver which is connected to the signal processing device through the connection socket....

  1. List of documents received by the INDC secretariat

    International Nuclear Information System (INIS)

    1983-05-01

    The Nuclear Data Section of the International Atomic Energy Agency receives documents originated by or for the International Nuclear Data Committee for distribution. This list includes all INDC documents received and distributed by the INDC secretariat during the last ten years, and supersedes last year's edition of this report

  2. Distributed Iterative Processing for Interference Channels with Receiver Cooperation

    DEFF Research Database (Denmark)

    Badiu, Mihai Alin; Manchón, Carles Navarro; Bota, Vasile

    2012-01-01

    We propose a method for the design and evaluation of distributed iterative algorithms for receiver cooperation in interference-limited wireless systems. Our approach views the processing within and collaboration between receivers as the solution to an inference problem in the probabilistic model...

  3. Gluconeogenesis continues in premature infants receiving total parenteral nutrition

    Science.gov (United States)

    To determine the contribution of total gluconeogenesis, to glucose production in preterm infants receiving total parenteral nutrition (TPN) providing glucose exceeding normal infant glucose turnover rate, eight infants (0.955 +/- 0.066 kg, 26.5 - 0.5 wks, 4-1 d) were studied while receiving routine ...

  4. Autonomous Operation of Super-Regenerative Receiver in BAN

    NARCIS (Netherlands)

    Kalyanasundaram, P.; Huang, L.; Dolmans, G.; Imamura, K.

    2012-01-01

    Super-regenerative receiver is one of the potential candidates to achieve ultra low power wireless communication in body area network (BAN). The main limitations of the super-regenerative receiver include the difficulty in choosing a good quench waveform to optimize its sensitivity and selectivity,

  5. 75 FR 80106 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-12-21

    ... training facilities requirements given the school's use of online training material, as well as the ground...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition...

  6. 75 FR 20881 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-04-21

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  7. 76 FR 33807 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-06-09

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  8. 76 FR 39976 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-07-07

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATE: Comments on this petition must...

  9. 75 FR 60859 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-10-01

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  10. 77 FR 35103 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-06-12

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  11. 78 FR 17746 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-03-22

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  12. 78 FR 53185 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-08-28

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  13. 77 FR 36333 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-06-18

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  14. 75 FR 19672 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-04-15

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... summary is intended to affect the legal status of the petition or its final disposition. DATES: Comments...

  15. 78 FR 46673 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-08-01

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  16. 78 FR 57676 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-09-19

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  17. 75 FR 60164 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-09-29

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  18. 76 FR 65772 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-10-24

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  19. 78 FR 53186 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-08-28

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATE: Comments on this petition must...

  20. 76 FR 16653 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-03-24

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  1. 78 FR 56768 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-09-13

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  2. 75 FR 26839 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-05-12

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  3. 77 FR 2120 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-01-13

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  4. 78 FR 73918 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-12-09

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... summary is intended to affect the legal status of the petition or its final disposition. [[Page 73919...

  5. 78 FR 13745 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-02-28

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  6. 78 FR 13746 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-02-28

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... summary is intended to affect the legal status of the petition or its final disposition. DATES: Comments...

  7. 77 FR 58210 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-09-19

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  8. 76 FR 39975 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-07-07

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... summary is intended to affect the legal status of the petition or its final disposition. DATES: Comments...

  9. 78 FR 46672 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-08-01

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  10. 75 FR 10016 - Petition for Exemption; Summary of Petitions Received

    Science.gov (United States)

    2010-03-04

    ...] Petition for Exemption; Summary of Petitions Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of two petitions seeking relief from specified requirements of 14 CFR. The purpose of this notice is to improve the...

  11. 75 FR 65396 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-10-22

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  12. 77 FR 71865 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-12-04

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  13. 78 FR 73919 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-12-09

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  14. 78 FR 34139 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-06-06

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  15. 78 FR 978 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-01-07

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  16. 77 FR 50760 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-08-22

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  17. 76 FR 2746 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-01-14

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  18. 76 FR 14744 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-03-17

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... summary is intended to affect the legal status of the petition or its final disposition. DATES: Comments...

  19. 75 FR 21388 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-04-23

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petitions or their final disposition. DATES: Comments on these petitions must...

  20. 78 FR 36294 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-06-17

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  1. 76 FR 51119 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-08-17

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  2. 76 FR 9852 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-02-22

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  3. 75 FR 80107 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-12-21

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  4. 78 FR 979 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-01-07

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  5. 75 FR 21389 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-04-23

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petitions or their final disposition. DATES: Comments on these petitions must...

  6. 77 FR 71864 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-12-04

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATE: Comments on this petition must...

  7. 78 FR 66098 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-11-04

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  8. 75 FR 21387 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-04-23

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  9. 76 FR 24560 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-05-02

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  10. 75 FR 10016 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-03-04

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATE: Comments on this petition must...

  11. 78 FR 53818 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-08-30

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  12. 77 FR 5087 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-02-01

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  13. 75 FR 51525 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2010-08-20

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petitions or their final disposition. DATES: Comments on these petitions must...

  14. 78 FR 35353 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-06-12

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  15. 77 FR 44309 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-07-27

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  16. 77 FR 31064 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2012-05-24

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  17. 78 FR 66986 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-11-07

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  18. 78 FR 39824 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-07-02

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... information in the summary is intended to affect the legal status of the petition or its final disposition...

  19. 78 FR 24290 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-04-24

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  20. 78 FR 66099 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-11-04

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  1. 78 FR 39825 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-07-02

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  2. 76 FR 20806 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2011-04-13

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  3. 78 FR 21701 - Petition for Exemption; Summary of Petition Received

    Science.gov (United States)

    2013-04-11

    ...] Petition for Exemption; Summary of Petition Received AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of petition for exemption received. SUMMARY: This notice contains a summary of a petition... the legal status of the petition or its final disposition. DATES: Comments on this petition must...

  4. Design of a 1 Tb/s superchannel coherent receiver

    NARCIS (Netherlands)

    Millar, D.S.; Maher, R.; Lavery, D.; Koike-Akino, T.; Pajovic, M.; Alvarado, A.; Paskov, M.; Kojima, K.; Parsons, K.; Thomsen, B.C.; Savory, S.J.; Bayvel, P.

    2016-01-01

    We describe the design of a trained and pilot-aided digital coherent receiver, capable of detecting a 1 Tb/s superchannel with a single optical front-end. Algorithms for receiver training are described, which calculate the equalizer coefficients, subchannel SNRs, and centroids of the transmitted

  5. Compact wideband CMOS receiver frontends for wireless communication

    NARCIS (Netherlands)

    Blaakmeer, S.C.

    2010-01-01

    Abstract Wireless communication is an integral part of our daily life, the mobile phone is an example of a very popular wireless communication device. A communication link consists of a transmitter, a receiver and the transmission medium, which air or vacuum for a wireless link. Part of the receiver

  6. Wireless receiver architectures towards 5G : where are we?

    NARCIS (Netherlands)

    Bronckers, L.A.; Roc'h, A.; Smolders, A.B.

    2017-01-01

    With 5G posing different requirements to the mobile (handset) receiver than earlier generations, the receiver architecture needs to be carefully reconsidered. However, an up-to-date and complete overview is not yet available in literature. In this paper such a review of the currently available

  7. Three scientists to receive presidential Enrico Fermi award

    CERN Multimedia

    2003-01-01

    "Secretary of Energy Spencer Abraham today named John Bahcall, Raymond Davis, Jr. and Seymour Sack as winners of the Enrico Fermi Award. ... Drs. Bahcall and Davis will receive the award for their research in neutrino physics. Dr. Sack will receive the award for his contributions to national security" (1 page).

  8. Improved noise-adding radiometer for microwave receivers

    Science.gov (United States)

    Batelaan, P. D.; Stelzried, C. T.; Goldstein, R. M.

    1973-01-01

    Use of input switch and noise reference standard is avoided by using noise-adding technique. Excess noise from solid state noise-diode is coupled into receiver through directional coupler and square-wave modulated at low rate. High sensitivity receivers for radioastronomy applications are utilized with greater confidence in stability of radiometer.

  9. Enzymuria in neonates receiving continuous intravenous infusion of gentamicin

    DEFF Research Database (Denmark)

    Colding, H; Brygge, K; Brendstrup, L

    1992-01-01

    with non-treatment periods in the same newborn infant (33 infants). The same tendency applied to AAP. Newborn infants receiving continuous intravenous infusion of gentamicin were not found to be at greater risk of nephrotoxicity than those receiving intermittent gentamicin treatment, using NAG and AAP...

  10. 7 CFR 981.472 - Report of almonds received.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Report of almonds received. 981.472 Section 981.472... Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE ALMONDS GROWN IN CALIFORNIA Administrative Rules and Regulations § 981.472 Report of almonds received. (a) Each handler shall report to the...

  11. among People Receiving Antiretroviral Treatment in Western Uganda

    African Journals Online (AJOL)

    In this paper, we use survey (n=87) and interview (n=30) data to investigate orientations towards future childbearing among people receiving antiretroviral treatment and their family members in western Uganda. We investigate how reproductive options are perceived, by those receiving treatment and those closest to them, ...

  12. Which Preschool Children with Specific Language Impairment Receive Language Intervention?

    Science.gov (United States)

    Wittke, Kacie; Spaulding, Tammie J.

    2018-01-01

    Purpose: Potential biases in service provision for preschool children with specific language impairment (SLI) were explored. Method: In Study 1, children with SLI receiving treatment (SLI-T) and those with SLI not receiving treatment (SLI-NT) were compared on demographic characteristics and developmental abilities. Study 2 recruited children with…

  13. Evaluation and Error Analysis for a Solar Thermal Receiver

    International Nuclear Information System (INIS)

    Pfander, M.

    2001-01-01

    In the following study a complete balance over the REFOS receiver module, mounted on the tower power plant CESA-1 at the Plataforma Solar de Almeria (PSA), is carried out. Additionally an error inspection of the various measurement techniques used in the REFOS project is made. Especially the flux measurement system Pro hermes that is used to determine the total entry power of the receiver module and known as a major error source is analysed in detail. Simulations and experiments on the particular instruments are used to determine and quantify possible error sources. After discovering the origin of the errors they are reduced and included in the error calculation. The ultimate result is presented as an overall efficiency of the receiver module in dependence on the flux density at the receiver modules entry plane and the receiver operating temperature. (Author) 26 refs

  14. Advanced Signal Processing for MIMO-OFDM Receivers

    DEFF Research Database (Denmark)

    Manchón, Carles Navarro

    This thesis deals with a wide range of topics within the research area of advanced baseband receiver design for wireless communication systems. In particular, the work focuses on signal processing algorithms for receivers in multiple-input multiple-output (MIMO) orthogonal frequency-division mult......This thesis deals with a wide range of topics within the research area of advanced baseband receiver design for wireless communication systems. In particular, the work focuses on signal processing algorithms for receivers in multiple-input multiple-output (MIMO) orthogonal frequency...... the structure of the receiver with the hope that the resulting heuristic architecture will exhibit the desired behavior and performance. On the other hand, one can employ analytical frameworks to pose the problem as the optimization of a global objective function subject to certain constraints. This work...

  15. FFT analysis of sensible-heat solar-dynamic receivers

    Science.gov (United States)

    Lund, Kurt O.

    The use of solar dynamic receivers with sensible energy storage in single-phase materials is considered. The feasibility of single-phase designs with weight and thermal performance comparable to existing two-phase designs is addressed. Linearized heat transfer equations are formulated for the receiver heat storage, representing the periodic input solar flux as the sum of steady and oscillating distributions. The steady component is solved analytically to produce the desired receiver steady outlet gas temperature, and the FFT algorithm is applied to the oscillating components to obtain the amplitudes and mode shapes of the oscillating solid and gas temperatures. The results indicate that sensible-heat receiver designs with performance comparable to state-of-the-art two-phase receivers are available.

  16. List of documents received by the INDC secretariat

    International Nuclear Information System (INIS)

    1986-04-01

    The Nuclear Data Section of the International Atomic Energy Agency receives documents originated by or for the International Nuclear Data Committee for distribution. This list includes all INDC documents received and distributed by the INDC secretariat during the period January 1984 to March 1986. In addition to the INDC documents received by the INDC Secretariat for distribution, this document also lists the titles of reports received as single copies for information. These documents cannot be obtained from the INDC Secretariat, but should be requested from the originating laboratory or organization. All of the single copy documents, which have been received between January 1984 and March 1986 are listed in Appendix A to this document

  17. List of documents received by the INDC Secretariat

    International Nuclear Information System (INIS)

    1984-08-01

    The Nuclear Data Section of the International Atomic Energy Agency receives documents originated by or for the International Nuclear Data Committee for distribution. The present list includes all INDC documents received and distributed by the INDC secretariat during the period January 1982 to June 1984, and supersedes last years' edition of this report, INDC(SEC)-85/UN. This list is produced directly from computer printout in two sorts: one ordered by accession number, and the other ordered by document number within each origin series (e.g. listing all INDC(SEC)-documents in one block). In addition to the INDC documents received by the INDC Secretariat for distribution, this document also lists the titles of reports received as single copies for information. All of the single copy documents which have been received between June 1983 and July 1984 are listed in Appendix A to this document

  18. Joint Transmitter-Receiver Optimization in the Downlink CDMA Systems

    Directory of Open Access Journals (Sweden)

    Mohammad Saquib

    2002-08-01

    Full Text Available To maximize the downlink code-division multiple access (CDMA system capacity, we propose to minimize the total transmitted power of the system subject to users′ signal-to-interference ratio (SIR requirements via designing optimum transmitter sequences and utilizing linear optimum receivers (minimum mean square error (MMSE receiver. In our work on joint transmitter-receiver design for the downlink CDMA systems with multiple antennas and multipath channels, we develop several optimization algorithms by considering various system constraints and prove their convergence. We empirically observed that under the optimization algorithm with no constraint on the system, the optimum receiver structure matches the received transmitter sequences. A simulation study is performed to see how the different practical system constraints penalize the system with respect to the optimum algorithm with no constraint on the system.

  19. Intermediate Frequency Digital Receiver Based on Multi-FPGA System

    Directory of Open Access Journals (Sweden)

    Chengchang Zhang

    2016-01-01

    Full Text Available Aiming at high-cost, large-size, and inflexibility problems of traditional analog intermediate frequency receiver in the aerospace telemetry, tracking, and command (TTC system, we have proposed a new intermediate frequency (IF digital receiver based on Multi-FPGA system in this paper. Digital beam forming (DBF is realized by coordinated rotation digital computer (CORDIC algorithm. An experimental prototype has been developed on a compact Multi-FPGA system with three FPGAs to receive 16 channels of IF digital signals. Our experimental results show that our proposed scheme is able to provide a great convenience for the design of IF digital receiver, which offers a valuable reference for real-time, low power, high density, and small size receiver design.

  20. Evaluation and Error Analysis for a Solar thermal Receiver

    Energy Technology Data Exchange (ETDEWEB)

    Pfander, M.

    2001-07-01

    In the following study a complete balance over the REFOS receiver module, mounted on the tower power plant CESA-1 at the Plataforma Solar de Almeria (PSA), is carried out. Additionally an error inspection of the various measurement techniques used in the REFOS project is made. Especially the flux measurement system Prohermes that is used to determine the total entry power of the receiver module and known as a major error source is analysed in detail. Simulations and experiments on the particular instruments are used to determine and quantify possible error sources. After discovering the origin of the errors they are reduced and included in the error calculation. the ultimate result is presented as an overall efficiency of the receiver module in dependence on the flux density at the receiver module's entry plane and the receiver operating temperature. (Author) 26 refs.

  1. Uncertainty In Measuring Noise Parameters Of a Communication Receiver

    International Nuclear Information System (INIS)

    Korcz, Karol; Palczynska, Beata; Spiralski, Ludwik

    2005-01-01

    The paper presents the method of assessing uncertainty in measuring the usable sensitivity Es of communication receiver. The influence of partial uncertainties of measuring the noise factor F and the energy pass band of the receiver Δf on the combined standard uncertainty level is analyzed. The method to assess the uncertainty in measuring the noise factor on the basis of the systematic component of uncertainty, assuming that the main source of measurement uncertainty is the hardware of the measuring system, is proposed. The assessment of uncertainty in measuring the pass band of the receiver is determined with the assumption that input quantities of the measurement equation are not correlated. They are successive, discrete values of the spectral power density of the noise on the output of receiver. The results of the analyses of particular uncertainties components of measuring the sensitivity, which were carried out for a typical communication receiver, are presented

  2. Heat receivers for solar dynamic space power systems

    Science.gov (United States)

    Perez-Davis, Marla Esther

    A review of state-of-the-art technology is presented and discussed for phase change materials. Some of the advanced solar dynamic designs developed as part of the Advanced Heat Receiver Conceptual Design Study performed for LeRC are discussed. The heat receivers are analyzed and several recommendations are proposed, including two new concepts. The first concept evaluated the effect of tube geometries inside the heat receiver. It was found that a triangular configuration would provide better heat transfer to the working fluid, although not necessarily with a reduction in receiver size. A sensible heat receiver considered in this study uses vapor grown graphite fiber-carbon (VGCF/C) composite as the thermal storage media and was designed for a 7 kW Brayton engine. The proposed heat receiver stores the required energy to power the system during eclipse in the VGCF/C composite. The heat receiver analysis was conducted through the Systems Improved Numerical Differencing Analyzer and Fluid Integrator (SINDA) software package. The proposed heat receiver compares well with other latent and advanced sensible heat receivers while avoiding the problems associated with latent heat storage salts and liquid metal heat pipes. The weight and size of the system can be optimized by changes in geometry and technology advances for this new material. In addition to the new concepts, the effect of atomic oxygen on several materials is reviewed. A test was conducted for atomic oxygen attack on boron nitride, which experienced a negligible mass loss when exposed to an atomic oxygen fluence of 5 x 10 exp 21 atoms/sq cm. This material could be used to substitute the graphite aperture plate of the heat receiver.

  3. Structural analysis of a reflux pool-boiler solar receiver

    Energy Technology Data Exchange (ETDEWEB)

    Hoffman, E.L.; Stone, C.M.

    1991-06-01

    Coupled thermal-structural finite element calculations of a reflux pool-boiler solar receiver were performed to characterize the operating stresses and to address issues affecting the service life of the receiver. Analyses performed using shell elements provided information for receiver material selection and design optimization. Calculations based on linear elastic fracture mechanics principles were performed using continuum elements to assess the vulnerability of a seam-weld to fatigue crack growth. All calculations were performed using ABAQUS, a general purpose finite element code, and elements specifically formulated for coupled thermal-structural analysis. Two materials were evaluated: 316L SS and Haynes 230 alloys. The receiver response was simulated for a combination of structural and thermal loads that represent the startup and operating conditions of the receiver. For both materials, maximum stresses in the receiver developed shortly after startup due to uneven temperature distribution across the receiver surface. The largest effective stress was near yield in the 316L SS receiver and below 39 percent of yield in the Haynes 230 receiver. The calculations demonstrated that stress reductions of over 25 percent could be obtained by reducing the aft dome thickness to one closer to the absorber. The fatigue calculations demonstrated that the stress distribution near the seam-weld notch depends primarily on the structural load created by internal pressurization of the receiver rather than the thermal, indicating that the thermal loads can be neglected when assessing the stress intensity near the seam-weld notch. The stress intensity factor, computed using the J-integral method and crack opening-displacement field equations, was significantly below the fatigue threshold for most steels. The calculations indicated that the weld notch was always loaded in compression, a condition which is not conducive to fatigue crack growth. 15 refs., 30 figs., 3 tabs.

  4. Analysis of signal acquisition in GPS receiver software

    Directory of Open Access Journals (Sweden)

    Vlada S. Sokolović

    2011-01-01

    Full Text Available This paper presents a critical analysis of the flow signal processing carried out in GPS receiver software, which served as a basis for a critical comparison of different signal processing architectures within the GPS receiver. It is possible to achieve Increased flexibility and reduction of GPS device commercial costs, including those of mobile devices, by using radio technology software (SDR, Software Defined Radio. The SDR application can be realized when certain hardware components in a GPS receiver are replaced. Signal processing in the SDR is implemented using a programmable DSP (Digital Signal Processing or FPGA (Field Programmable Gate Array circuit, which allows a simple change of digital signal processing algorithms and a simple change of the receiver parameters. The starting point of the research is the signal generated on the satellite the structure of which is shown in the paper. Based on the GPS signal structure, a receiver is realized with a task to extract an appropriate signal from the spectrum and detect it. Based on collected navigation data, the receiver calculates the position of the end user. The signal coming from the satellite may be at the carrier frequencies of L1 and L2. Since the SPS is used in the civil service, all the tests shown in the work were performed on the L1 signal. The signal coming to the receiver is generated in the spread spectrum technology and is situated below the level of noise. Such signals often interfere with signals from the environment which presents a difficulty for a receiver to perform proper detection and signal processing. Therefore, signal processing technology is continually being improved, aiming at more accurate and faster signal processing. All tests were carried out on a signal acquired from the satellite using the SE4110 input circuit used for filtering, amplification and signal selection. The samples of the received signal were forwarded to a computer for data post processing, i. e

  5. SEPIA - a new single pixel receiver at the APEX telescope

    Science.gov (United States)

    Belitsky, V.; Lapkin, I.; Fredrixon, M.; Meledin, D.; Sundin, E.; Billade, B.; Ferm, S.-E.; Pavolotsky, A.; Rashid, H.; Strandberg, M.; Desmaris, V.; Ermakov, A.; Krause, S.; Olberg, M.; Aghdam, P.; Shafiee, S.; Bergman, P.; Beck, E. De; Olofsson, H.; Conway, J.; Breuck, C. De; Immer, K.; Yagoubov, P.; Montenegro-Montes, F. M.; Torstensson, K.; Pérez-Beaupuits, J.-P.; Klein, T.; Boland, W.; Baryshev, A. M.; Hesper, R.; Barkhof, J.; Adema, J.; Bekema, M. E.; Koops, A.

    2018-04-01

    Context. We describe the new Swedish-ESO PI Instrument for APEX (SEPIA) receiver, which was designed and built by the Group for Advanced Receiver Development (GARD), at Onsala Space Observatory (OSO) in collaboration with ESO. It was installed and commissioned at the APEX telescope during 2015 with an ALMA Band 5 receiver channel and updated with a new frequency channel (ALMA Band 9) in February 2016. Aim. This manuscript aims to provide, for observers who use the SEPIA receiver, a reference in terms of the hardware description, optics and performance as well as the commissioning results. Methods: Out of three available receiver cartridge positions in SEPIA, the two current frequency channels, corresponding to ALMA Band 5, the RF band 158-211 GHz, and Band 9, the RF band 600-722 GHz, provide state-of-the-art dual polarization receivers. The Band 5 frequency channel uses 2SB SIS mixers with an average SSB noise temperature around 45 K with IF (intermediate frequency) band 4-8 GHz for each sideband providing total 4 × 4 GHz IF band. The Band 9 frequency channel uses DSB SIS mixers with a noise temperature of 75-125 K with IF band 4-12 GHz for each polarization. Results: Both current SEPIA receiver channels are available to all APEX observers.

  6. Design of coherent receiver optical front end for unamplified applications.

    Science.gov (United States)

    Zhang, Bo; Malouin, Christian; Schmidt, Theodore J

    2012-01-30

    Advanced modulation schemes together with coherent detection and digital signal processing has enabled the next generation high-bandwidth optical communication systems. One of the key advantages of coherent detection is its superior receiver sensitivity compared to direct detection receivers due to the gain provided by the local oscillator (LO). In unamplified applications, such as metro and edge networks, the ultimate receiver sensitivity is dictated by the amount of shot noise, thermal noise, and the residual beating of the local oscillator with relative intensity noise (LO-RIN). We show that the best sensitivity is achieved when the thermal noise is balanced with the residual LO-RIN beat noise, which results in an optimum LO power. The impact of thermal noise from the transimpedance amplifier (TIA), the RIN from the LO, and the common mode rejection ratio (CMRR) from a balanced photodiode are individually analyzed via analytical models and compared to numerical simulations. The analytical model results match well with those of the numerical simulations, providing a simplified method to quantify the impact of receiver design tradeoffs. For a practical 100 Gb/s integrated coherent receiver with 7% FEC overhead, we show that an optimum receiver sensitivity of -33 dBm can be achieved at GFEC cliff of 8.55E-5 if the LO power is optimized at 11 dBm. We also discuss a potential method to monitor the imperfections of a balanced and integrated coherent receiver.

  7. United States Department of Energy solar receiver technology development

    Science.gov (United States)

    Klimas, P. C.; Diver, R. B.; Chavez, J. M.

    The United States Department of Energy (DOE), through Sandia National Laboratories, has been conducting a Solar Thermal Receiver Technology Development Program, which maintains a balance between analytical modeling, bench and small scale testing, and experimentation conducted at scales representative of commercially-sized equipment. Central receiver activities emphasize molten salt-based systems on large scales and volumetric devices in the modeling and small scale testing. These receivers are expected to be utilized in solar power plants rated between 100 and 200 MW. Distributed receiver research focuses on liquid metal refluxing devices. These are intended to mate parabolic dish concentrators with Stirling cycle engines in the 5 to 25 kW(sub e) power range. The effort in the area of volumetric receivers is less intensive and highly cooperative in nature. A ceramic foam absorber of Sandia design was successfully tested on the 200 kW(sub t) test bed at Plataforma Solar during 1989. Material integrity during the approximately 90-test series was excellent. Significant progress has been made with parabolic dish concentrator-mounted receivers using liquid metals (sodium or a potassium/sodium mixture) as heat transport media. Sandia has successfully solar-tested a pool boiling reflux receiver sized to power a 25 kW Stirling engine. Boiling stability and transient operation were both excellent. This document describes these activities in detail and will outline plans for future development.

  8. Spread Spectrum Receiver Electromagnetic Interference (EMI) Test Guide

    Science.gov (United States)

    Wheeler, M. L.

    1998-01-01

    The objective of this test guide is to document appropriate unit level test methods and techniques for the performance of EMI testing of Direct Sequence (DS) spread spectrum receivers. Consideration of EMI test methods tailored for spread spectrum receivers utilizing frequency spreading, techniques other than direct sequence (such as frequency hopping, frequency chirping, and various hybrid methods) is beyond the scope of this test guide development program and is not addressed as part of this document EMI test requirements for NASA programs are primarily developed based on the requirements contained in MIL-STD-46 1 D (or earlier revisions of MIL-STD-46 1). The corresponding test method guidelines for the MIL-STD-461 D tests are provided in MIL-STD-462D. These test methods are well documented with the exception of the receiver antenna port susceptibility tests (intermodulation, cross modulation, and rejection of undesired signals) which must be tailored to the specific type of receiver that is being tested. Thus, test methods addressed in this guide consist only of antenna port tests designed to evaluate receiver susceptibility characteristics. MIL-STD-462D should be referred for guidance pertaining to test methods for EMI tests other than the antenna port tests. The scope of this test guide includes: (1) a discussion of generic DS receiver performance characteristics; (2) a summary of S-band TDRSS receiver operation; (3) a discussion of DS receiver EMI susceptibility mechanisms and characteristics; (4) a summary of military standard test guidelines; (5) recommended test approach and methods; and (6) general conclusions and recommendations for future studies in the area of spread spectrum receiver testing.

  9. An Array of Optical Receivers for Deep-Space Communications

    Science.gov (United States)

    Vilnrotter, Chi-Wung; Srinivasan, Meera; Andrews, Kenneth

    2007-01-01

    An array of small optical receivers is proposed as an alternative to a single large optical receiver for high-data-rate communications in NASA s Deep Space Network (DSN). Because the telescope for a single receiver capable of satisfying DSN requirements must be greater than 10 m in diameter, the design, building, and testing of the telescope would be very difficult and expensive. The proposed array would utilize commercially available telescopes of 1-m or smaller diameter and, therefore, could be developed and verified with considerably less difficulty and expense. The essential difference between a single-aperture optical-communications receiver and an optical-array receiver is that a single-aperture receiver focuses all of the light energy it collects onto the surface of an optical detector, whereas an array receiver focuses portions of the total collected energy onto separate detectors, optically detects each fractional energy component, then combines the electrical signal from the array of detector outputs to form the observable, or "decision statistic," used to decode the transmitted data. A conceptual block diagram identifying the key components of the optical-array receiver suitable for deep-space telemetry reception is shown in the figure. The most conspicuous feature of the receiver is the large number of small- to medium-size telescopes, with individual apertures and number of telescopes selected to make up the desired total collecting area. This array of telescopes is envisioned to be fully computer- controlled via the user interface and prediction-driven to achieve rough pointing and tracking of the desired spacecraft. Fine-pointing and tracking functions then take over to keep each telescope pointed toward the source, despite imperfect pointing predictions, telescope-drive errors, and vibration caused by wind.

  10. Low proportion of high school senior athletes receiving recommended immunizations.

    Science.gov (United States)

    Karpinos, Ashley Rowatt; Rizzone, Katherine H; Cribbs, Sarah P; Roumie, Christianne L

    2014-05-01

    The preparticipation physical evaluation (PPE) often serves as the only preventive health care visit for athletes, but immunization status is not uniformly addressed in such visits. Thus, athletes may not be receiving recommended immunizations. Our aim was to determine the proportion of high school senior athletes who received all recommended immunizations. Our hypothesis was that females would be less likely than males to receive all recommended immunizations given suboptimal human papillomavirus (HPV) vaccine uptake. We conducted a cross-sectional survey evaluation of the immunization status of high school senior athletes in Davidson County, TN. The primary composite outcome was receipt of recommended immunizations for tetanus, meningococcal, and seasonal influenza. For females, the primary outcome also included completion of the HPV series. A total of 162 participants, 104 males and 58 females, were included. More males than females received all recommended immunizations (15.4% vs 3.5%; P = 0.02). When HPV immunization was excluded from the composite outcome, there was no difference in the proportion of males and females who received all recommended immunizations (15.4% vs 15.5%; P = 0.98). The odds of receiving all recommended immunizations was 0.14 (95% CI, 0.03-0.72) for females compared with males when adjusted for covariates. Athletes seen at retail-based clinics for their PPE were less likely to receive all recommended immunizations compared with athletes seen in primary care (OR, 0.13; 95% CI, 0.02-0.69). Only 1 in 6 high school senior athletes received the recommended tetanus, meningococcal, and influenza immunizations. A lower proportion of females, only 1 in 28, received all recommended immunizations due to the HPV series. Policy changes requiring a review of immunizations at the PPE would benefit many high school athletes.

  11. Reasons for receiving or not receiving HPV vaccination in primary schoolgirls in Tanzania: a case control study.

    Science.gov (United States)

    Watson-Jones, Deborah; Tomlin, Keith; Remes, Pieter; Baisley, Kathy; Ponsiano, Riziki; Soteli, Selephina; de Sanjosé, Silvia; Changalucha, John; Kapiga, Saidi; Hayes, Richard J

    2012-01-01

    There are few data on factors influencing human papillomavirus (HPV) vaccination uptake in sub-Saharan Africa. We examined the characteristics of receivers and non-receivers of HPV vaccination in Tanzania and identified reasons for not receiving the vaccine. We conducted a case control study of HPV vaccine receivers and non-receivers within a phase IV cluster-randomised trial of HPV vaccination in 134 primary schools in Tanzania. Girls who failed to receive vaccine (pupil cases) and their parents/guardians (adult cases) and girls who received dose 1 (pupil controls) of the quadrivalent vaccine (Gardasil™) and their parents/guardians (adult controls) were enrolled from 39 schools in a 1∶1 ratio and interviewed about cervical cancer, HPV vaccine knowledge and reasons why they might have received or not received the vaccine. Conditional logistic regression was used to determine factors independently associated with not receiving HPV vaccine. We interviewed 159 pupil/adult cases and 245 pupil/adult controls. Adult-factors independently associated with a daughter being a case were older age, owning fewer household items, not attending a school meeting about HPV vaccine, and not knowing anyone with cancer. Pupil-factors for being a case included having a non-positive opinion about the school de-worming programme, poor knowledge about the location of the cervix, and not knowing that a vaccine could prevent cervical cancer. Reasons for actively refusing vaccination included concerns about side effects and infertility. Most adult and pupil cases reported that they would accept the HPV vaccine if it were offered again (97% and 93% respectively). Sensitisation messages, especially targeted at older and poorer parents, knowledge retention and parent meetings are critical for vaccine acceptance in Tanzania. Vaccine side effects and fertility concerns should be addressed prior to a national vaccination program. Parents and pupils who initially decline vaccination should be

  12. Reasons for receiving or not receiving HPV vaccination in primary schoolgirls in Tanzania: a case control study.

    Directory of Open Access Journals (Sweden)

    Deborah Watson-Jones

    Full Text Available There are few data on factors influencing human papillomavirus (HPV vaccination uptake in sub-Saharan Africa. We examined the characteristics of receivers and non-receivers of HPV vaccination in Tanzania and identified reasons for not receiving the vaccine.We conducted a case control study of HPV vaccine receivers and non-receivers within a phase IV cluster-randomised trial of HPV vaccination in 134 primary schools in Tanzania. Girls who failed to receive vaccine (pupil cases and their parents/guardians (adult cases and girls who received dose 1 (pupil controls of the quadrivalent vaccine (Gardasil™ and their parents/guardians (adult controls were enrolled from 39 schools in a 1∶1 ratio and interviewed about cervical cancer, HPV vaccine knowledge and reasons why they might have received or not received the vaccine. Conditional logistic regression was used to determine factors independently associated with not receiving HPV vaccine.We interviewed 159 pupil/adult cases and 245 pupil/adult controls. Adult-factors independently associated with a daughter being a case were older age, owning fewer household items, not attending a school meeting about HPV vaccine, and not knowing anyone with cancer. Pupil-factors for being a case included having a non-positive opinion about the school de-worming programme, poor knowledge about the location of the cervix, and not knowing that a vaccine could prevent cervical cancer. Reasons for actively refusing vaccination included concerns about side effects and infertility. Most adult and pupil cases reported that they would accept the HPV vaccine if it were offered again (97% and 93% respectively.Sensitisation messages, especially targeted at older and poorer parents, knowledge retention and parent meetings are critical for vaccine acceptance in Tanzania. Vaccine side effects and fertility concerns should be addressed prior to a national vaccination program. Parents and pupils who initially decline vaccination

  13. List of documents received by the INDC Secretariat

    International Nuclear Information System (INIS)

    1979-05-01

    The Nuclear Data Section of the International Atomic Energy Agency receives documents originated by or for the International Nuclear Data Committee for distribution. This list includes all INDC documents received and distributed between January 1968 and May 1979, and supersedes INDC(SEC)-66/UN. This list is produced directly from computer printout in two sorts: one ordered by accession number, and the other ordered by document number with-in each origin series (e.g. listing all INDC(SEC)-documents in one block). Reference to earlier INDSWG and ''interim'' INDC reports received between 1962 and 1967 are listed in report INDC/199 (dated November 1967)

  14. List of documents received by the INDC Secretariat

    International Nuclear Information System (INIS)

    1991-01-01

    The Nuclear Data Section of the IAEA receives documents originated by or for the International Nuclear Data Committee (INDC) for distribution. This list includes all INDC documents received and distributed by the INDC Secretariat during the period March 1989 to June 1990. The list is produced directly from computer printout, into two groups: one ordered by accession number, and the other ordered by document number within each origin series. The document lists also in an appendix the titles of reports received as single copies for information

  15. Digital processing optical transmission and coherent receiving techniques

    CERN Document Server

    Binh, Le Nguyen

    2013-01-01

    With coherent mixing in the optical domain and processing in the digital domain, advanced receiving techniques employing ultra-high speed sampling rates have progressed tremendously over the last few years. These advances have brought coherent reception systems for lightwave-carried information to the next stage, resulting in ultra-high capacity global internetworking. Digital Processing: Optical Transmission and Coherent Receiving Techniques describes modern coherent receiving techniques for optical transmission and aspects of modern digital optical communications in the most basic lines. The

  16. List of documents received by the INDC Secretariat

    International Nuclear Information System (INIS)

    1989-05-01

    The Nuclear Data Section of the IAEA receives documents originated by or for the International Nuclear Data Committee for distribution. This list includes all INDC documents received and distributed by the INDC Secretariat during the period September 1987 to February 1989. The list is produced directly from computer printouts into two groups: one ordered by accession number, and the other ordered by document number within each series. The document lists also in an Appendix the titles of reports received as single copies for information

  17. Flexible Receiver Radiation Detection System (FRRDS) Users Manual

    International Nuclear Information System (INIS)

    Troyer, G.L.

    1996-01-01

    The Flexible Receiver Radiation Detection System (FRRDS) comprises a control computer, a remote data acquisition subsystem, and three hyperpure germanium gamma radiation detectors. The scope of this document is the description of various steps for the orderly start-up, use, and shutdown of the FRRDS. Only those items necessary for these oprations are included. This document is a companion to WHC-SD-W151-UM-002, 'Operating Instructions for the 42 Inch Flexible Receiver,' WHC-SD-W151-UM-003, 'Operating Instructions for the 4-6 Inch Flexible Receiver,' and the vendor supplied system users guide (Ref. 6)

  18. Solar central receiver reformer system for ammonia plants

    Science.gov (United States)

    1980-07-01

    An overview of a study to retrofit the Valley Nitrogen Producers, Inc., El Centro, California 600 ST/SD Ammonia Plant with Solar Central Receiver Technology is presented. The retrofit system consists of a solar central receiver reformer (SCRR) operating in parallel with the existing fossil fired reformer. Steam and hydrocarbon react in the catalyst filled tubes of the inner cavity receiver to form a hydrogen rich mixture which is the syngas feed for the ammonia production. The SCRR system will displace natural gas presently used in the fossil reformer combustion chamber.

  19. Financial reserve. Hospitals leery of credit lines, factoring receivables.

    Science.gov (United States)

    Edwards, D E; Hamilton, W C; Hauser, R

    1991-10-01

    Opening lines of credit and factoring (selling) accounts receivable are two ways to generate operating cash that non-healthcare industries have long used successfully. A recent survey of hospital officials across the nation, however, showed these techniques are used infrequently in health care. Among the 281 hospitals responding: Only 45 percent use lines of credit; Less than 5 percent pursue accounts receivable factoring; and Only 12 percent plan to begin factoring receivables in the future. As hospitals look for ways to offset depleted cash reserves, these percentages may increase.

  20. Social support received by multidrug-resistant tuberculosis patients and related factors: a cross-sectional study in Zhejiang Province, People's Republic of China

    Directory of Open Access Journals (Sweden)

    Chen B

    2016-06-01

    Full Text Available Bin Chen,1 Yin Peng,1 Lin Zhou,1 Chengliang Chai,1 Hui-Chi Yeh,2 Songhua Chen,1 Fei Wang,1 Mingwu Zhang,1 Tieniu He,1 Xiaomeng Wang1 1Department of Tuberculosis Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Binjiang District, Hangzhou, People’s Republic of China; 2Politics & International Relations, Social Sciences, University of Southampton, Southampton, UK Objectives: The objective of this study is to assess the social support received by patients diagnosed with multidrug-resistant tuberculosis (MDR-TB in Zhejiang Province, People’s Republic of China and the factors that may have influenced it. Methods: A total of 220 MDR-TB patients participated in the questionnaire-based survey, and the data from 212 valid questionnaires were analyzed. The respondents reported their sociodemographic status, disease features, and attitudes toward the disease. The social support rating scale was used to measure the patients’ social support scores. An Independent Samples t-test, one-way analysis of variance, and a multiple linear regression model were used to analyze the related factors for the social support scores. Result: The average social support score of each MDR-TB patient was 32.56±7.86. Participants who were single, widowed or divorced, retired, and had fewer family members and lower family income were found to have lower social support scores. Participants unwilling to disclose their disease tended to have less social support (31.59<34.23, P=0.010. Participants who perceived great help from health care workers reported higher social support rating scale scores than those who perceived no help (35.36>29.89, P=0.014. Conclusion: MDR-TB patients in Zhejiang Province were shown to have a low level of social support. Patients who were not married, had smaller families, and lower family income received less social support, suggesting that family harmony could be an important source of social support. Patients