WorldWideScience

Sample records for a

  1. a

    Directory of Open Access Journals (Sweden)

    I. Pérez

    Full Text Available Fundamento: La solicitud de pruebas diagnósticas desde atención primaria presentan un aumento progresivo en el tiempo y una gran variabilidad interpersonal en su solicitud, que sugiere que se están aplicando servicios inefectivos. El objetivo es conocer las características de los demandantes de pruebas radiológicas (radiología general y ecografía y cuantificar las pruebas innecesarias en atención primaria. Material y métodos: Estudio descriptivo transversal sobre una muestra en cluster de 23 centros de salud de Navarra en el mes de marzo de 2004. Se diseña un cuestionario específico para cumplimentar por el médico solicitante de la prueba diagnóstica. Se realiza análisis multivariante mediante regresión logística para estudiar la asociación entre pruebas innecesarias y las otras variables de estudio. Resultados: Se realizan pruebas al 9 por mil de la población estudiada. La variabilidad interprofesional en la solicitud de pruebas oscila entre 0 y 33,3 por cada 1000 tarjetas sanitarias para la edad infantil. Los estudios radiológicos solicitados con mayor frecuencia fueron los óseos (48,9%, LC: 42,4-55,5. En el 63,2% de las solicitudes no se realizaron modificaciones en el tratamiento previo a la solicitud de la prueba y el 57 % (LC: 52,4-61,7 de las pruebas realizadas se solicitan para descartar patología. El 24,7% (LC: 17,1-29,2 son pruebas innecesarias y en el 15,2 % (LC:10,7-18,2 hubo presión del enfermo en la solicitud. En el análisis multivariante se observan diferencias significativas para Rx de tórax, cambios en el tratamiento y ser presionado por el enfermo. Tras ajustar por las otras variables, la solicitud de una prueba innecesaria es 12,55 veces mayor si el médico se siente presionado por el enfermo. Conclusiones: Debe analizarse la correcta indicación de la radiología, especialmente de la ósea, y se debe potenciar al radiólogo en la decisión última de realizar la prueba diagnóstica.

  2. A

    Directory of Open Access Journals (Sweden)

    Morteza Bahram

    2016-09-01

    Full Text Available We report on a new method for the preconcentration and microextraction of analytes from aqueous samples using a pH-sensitive hydrogel. It is referred to as semisolid–liquid dispersive microextraction (SSLDM and has the advantages of both dispersive liquid–liquid microextraction (DLLME and solid-phase extraction (SPE. The surface area of the droplets is large, so the equilibrium state is quickly reached. The high density of the gel facilitates phase separation, and disadvantages of existing methods are overcome in that there is no need for extraction and dispersive solvents (as in conventional DLLME and no need for desorption (as in SPE. The SSLDM method integrates sampling, extraction and concentration into one single and solvent-free step. The method was exemplarily applied to the preconcentration of malachite green (MG and crystal violet (CV which then were quantified by spectrophotometry. Specifically, poly (styrene-alt-maleic acid, a pH-sensitive hydrogel, was used to extract MG and CV from water samples. The linear analytical range is from 0.01 to 1 μmol L−1 for MG, and from 0.05 to 1 μmol L−1 for CV. The correlation coefficient for MG and CV is 0.999 and 0.993, respectively. The limit of detection for MG and CV is 0.011 and 0.014 μmol L−1, respectively.

  3. A84a

    OpenAIRE

    T. Zavarykina; A. Burdennyy; Loginov, V.; E. Ignatova; E. Glazkova; M. Frolova; M. Stenina

    2015-01-01

    There is increasing evidence that BRCA1-related DNA-repair defects determine sensitivity to certain agents, such as platinum-based chemotherapy. There is a lot of evidence about a link between TNBC and BRCA1 deficiency. Many clinical characteristics and molecular features are shared by sporadic triple-negative breast cancer and BRCA1-associated breast cancer. The majority of BRCA1-related breast cancers are of basal-like/triple-negative phenotype. Identification of specific markers of BRCA1-d...

  4. A Writer, a Translator and a Translator

    OpenAIRE

    Katarina Marinčič

    2015-01-01

    The article deals with the French translation of the short story Amy by the Slovenian writer Mira Mihelič, made by Elza Jereb for the anthology Nouvelles slovènes (Paris, 1969). The original text, a classical narrative involving some modernist strategies, presents a syntactical feature rather unusual in Slovenian (although typical of the author Mira Mihelič): a very frequent use of participles and participial structures. Elza Jereb’s translation is accurate and precise, preserving not only th...

  5. A container

    DEFF Research Database (Denmark)

    2012-01-01

    A container assembly for the containment of fluids or solids under a pressure different from the ambient pressure comprising a container (2) comprising an opening and an annular sealing, a lid (3) comprising a central portion (5) and engagement means (7) for engaging the annular flange, and seali...

  6. Hepatitis A

    Science.gov (United States)

    ... an inflammation of the liver. One type, hepatitis A, is caused by the hepatitis A virus (HAV). The disease spreads through contact with ... washed in untreated water Putting into your mouth a finger or object that came into contact with ...

  7. Vitamin A

    Science.gov (United States)

    Vitamins are substances that your body needs to grow and develop normally. Vitamin A plays a role in your Vision Bone growth Reproduction Cell functions Immune system Vitamin A is an antioxidant. It can come from ...

  8. A literatura e a teologia

    Directory of Open Access Journals (Sweden)

    Genilma Boehler

    2011-04-01

    Full Text Available Trata-se de uma reflexão sobre literatura e teologia, pontualmente sobre poesia e teologia. Como afirmou Edgar Morin “a literatura tem a vantagem de refletir sobre a complexidade do ser humano e sobre a quantidade incrível de seus sonhos” (MORIN, 2009:6. Já a teologia, como definida por Rubem Alves, é “um jeito de falar sobre tais coisas dando-lhes um nome e apenas distinguindo-se da poesia porque a teologia é sempre feita como prece...” (ALVES, 2005:21. O encontro das duas é a ocasião para que seja feita uma reflexão acerca de Deus, a partir do espaço da poesia, recorrendo a outra linguagem, outro conhecimento, outras bibliotecas, considerando o corpo, o desejo, a vida, o mundo na medida em que apresenta a pessoa, a sociedade e a cultura.

  9. Algebra? A Gate! A Barrier! A Mystery!

    Science.gov (United States)

    Mathematics Educatio Dialogues, 2000

    2000-01-01

    This issue of Mathematics Education Dialogues focuses on the nature and the role of algebra in the K-14 curriculum. Articles on this theme include: (1) "Algebra For All? Why?" (Nel Noddings); (2) "Algebra For All: It's a Matter of Equity, Expectations, and Effectiveness" (Dorothy S. Strong and Nell B. Cobb); (3) "Don't Delay: Build and Talk about…

  10. Northrop A-17A Nomad

    Science.gov (United States)

    1940-01-01

    Northrop A-17A Nomad: In the spring of 1939 the NACA tested an experimental cowling and cooling system on Northrop's A-17A. Various types and combinations were tried, but the NACA cowl first used seemed to work best, as no modifications made their way onto 'line' aircraft.

  11. A118

    Directory of Open Access Journals (Sweden)

    A. Kozlov

    2015-11-01

    It can be concluded that expression of protogenes, evolutionarily young and/or novel genes in tumors might be a new biological phenomenon, a phenomenon of carcino-evo-devo genes, predicted by the hypothesis of evolution by tumor neofunctionalization.

  12. Hemophilia A

    Science.gov (United States)

    Factor VIII deficiency; Classic hemophilia; Bleeding disorder - hemophilia A ... When you bleed, a series of reactions take place in the body that helps blood clots form. This process is called the coagulation ...

  13. Vitamin A

    Science.gov (United States)

    ... carotenoid is beta-carotene. Beta-carotene is an antioxidant. Antioxidants protect cells from damage caused by substances called ... A can lead to hyperkeratosis or dry, scaly skin. If you get too much vitamin A, you ...

  14. A Dream

    Institute of Scientific and Technical Information of China (English)

    Cecile; Fries

    2013-01-01

    <正>The rising sun flames clouds. Through the airplane window I am enjoying the clouds with golden edges. In a few hours I will set foot on the soil of China, a country that has always been in my dreams. Thoughts thronged my mind. Perhaps, in my life I will never have a chance to travel to China, a faraway, strange and mysterious country;

  15. A nudez

    Directory of Open Access Journals (Sweden)

    Viviana C. Velasco Martínez

    Full Text Available O objetivo deste artigo é apresentar um mito e o seu herói. É com esse material simbólico que pretendo enfocar temas freudianos clássicos, como a sexualidade infantil, o pudor, a crueldade, o fetichismo, o exibicionismo e a castração e, assim, esboçar o contorno de uma possível fantasia neurótica inconsciente, onde a perversão encontrase em negativo.

  16. A new

    NARCIS (Netherlands)

    Giusberti, L.; Bannikov, A.; Galazzo, F.B.; Fornaciari, E.; Frieling, J.; Luciani, V.; Papazzoni, C.A.; Roghi, G.; Schouten, S.; Sluijs, A.; Bosellini, F.R.; Zorzin, R.

    2014-01-01

    Hemipelagic dark limestones within calciturbiditic deposits at Monte Solane in the western Lessini Mountains of northern Italy yield a fish fauna dominated by stomiiforms. A minor component of the fossil assemblage is represented by a macroalgal non-calcareous flora associated with rarer terrestrial

  17. Hepatitis A

    Science.gov (United States)

    ... inflammation of the liver.” This inflammation can be caused by a wide variety of toxins, drugs, and metabolic diseases, as well as infection. There are at least 5 hepatitis viruses. Hepatitis A is contracted when a child eats food or drinks water that is contaminated with the virus or has ...

  18. Hepatitis A

    Science.gov (United States)

    ... receiving the shot. About 1 out of 10 children may have a mild fever or poor appetite. If these problems occur, they usually last a day or two. However, vaccines like any medicine, could ver y rarely cause a severe allergic ... as children grow up. •Prevents hospitalizations among older children and ...

  19. A prog

    DEFF Research Database (Denmark)

    Meldgaard, Anette; Hansen, Torben Bæk; Dalsgaard, Jesper

    2009-01-01

    Background: Endoscopic carpal tunnel release with a single portal technique has been shown to reduce sick leave compared to open carpal tunnel release, claiming to be a less invasive procedure and reducing scar tenderness leading to a more rapid return to work, and the purpose of this study was t...

  20. A Keyboard

    DEFF Research Database (Denmark)

    2008-01-01

    The present invention relates to a keyboard with a plurality of keys with key switches that are covered by a flexible display for displaying individual labels of the keys whereby the label can be changed during operation of the keyboard by appropriate control of the keyboard. The flexible display...

  1. A laser

    Energy Technology Data Exchange (ETDEWEB)

    Togo, N.

    1984-06-19

    It is reported that an improved laser design employing pumping of the active gas medium has been developed. A diagram of the laser system is given and its principle of operation is described in detail. Gas pumping is achieved using a pump whose oil reservoir is sealed by a sealing element. When the sealing element fails, the oil from the reservoir pollutes the laser substance. It is proposed that an additional oil reservoir pumping loop be used to maintain a lower pressure. The reservoir pressure is recorded by a sensor. When the sealing element fails, the pressure in the reservoir increases. The sensor records the change in pressure and generates a signal which shuts down the laser system. Thus, the possibility for oil penetration into the gas system is totally eliminated.

  2. A "Network" and a "Dictum"

    DEFF Research Database (Denmark)

    Harder, Henrik

    2003-01-01

    The spatial problems encountered in urban areas, for instance "sprawl", "the fragmented town" etc. However, the critic should concentrate more on a small "network" of a few architects and planners, including an inspector (C. D. Buchanan, UK) and a single policeman (H. Alker Tripp, UK) who were he...

  3. A Joke

    Institute of Scientific and Technical Information of China (English)

    王秀军

    2005-01-01

    O ne hot sum m er day, a student in sweat, fanning him self w ith abook,asked his teacher,“Its rather too hotin the classroom .M ay I wearshorts while having classes, Sir?” “Itdoesn t m atter whether you wearshorts or not, but I m ust let you know , when you enter the classroom ,you m ust wear a pair oftrousers,”the teacher replied.A Joke!河北@王秀军

  4. A dor

    Directory of Open Access Journals (Sweden)

    Manoel Tosta Berlinck

    Full Text Available Este trabalho relata pesquisa sobre a natureza psicopatológica da dor partindo da noção de que o humano habita na dor. Esta passa, assim, a ser um conceito-limite do humano que não consegue ultrapassá-la, apesar dos recursos farmacológicos e psíquicos disponíveis para dela se proteger. Nesta perspectiva, o corpo humano solicita uma concepção que seja capaz de levar em consideração tanto a dor física como a psíquica.

  5. A Dog

    Institute of Scientific and Technical Information of China (English)

    韩选文

    2004-01-01

    A dog can't speak words, but it can "talk", It has feelings just as you do. At times it may feel angry or afraid. Watching a dog closely, you can find out what it feels. You can see what it is trying to tell you.

  6. A Proposal

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    正All the students in our school, A sudden 8.0 earthquake happened in Wenchuan, Sichuan Province at 2:28 on the afternoon of May 12, 2008. Many houses fell down and lots of people have become homeless. A large number of people were badly injured and so many people lost their lives. The people in

  7. A Joke

    Institute of Scientific and Technical Information of China (English)

    Simon; Lindley

    2005-01-01

    W orking at the post office,Im used to dealing with a m oody public.So w hen one irate custom er storm ed m y desk,I responded in m y calm estvoice,“W hats the trouble?”“I w ent out this m orning,”she began,“and when I cam e hom e Ifound a card saying the m ailm an tried to deliver a package but no onewas hom e.M y husband was in allm orning.H e never heard a thing!”A fter apologizing,I gother parcel.“O h,good,”she gushed.“W e ve been w aiting for this for ages.”“W hat is it?”I asked.“M y husband s new hear...

  8. A Rejoinder

    Directory of Open Access Journals (Sweden)

    Nelson Lichtenstein

    2006-03-01

    Full Text Available It is a pleasure and a challenge to engage these commentaries on my recent book, State of the Union: a Century of American Labor. The pleasure is there because this author, like almost every other, is deeply appreciative of the kind of critical attention, and sheer energy, to which his work is subject. The commentators assembled by Jean‑Christain Vinel understood with remarkable precision the main line of argument I was trying to advance, which has not always been the case on the American sid...

  9. A quackery with a difference

    DEFF Research Database (Denmark)

    Wahlberg, Ayo

    2007-01-01

    in which regulatory authorities in the UK have come to address what is invariably described as a ‘growing interest in CAM’, I will show how the problem of quackery today is increasingly located in an ethical field of practitioner competency, qualifications, conduct, responsibility and personal professional...... health. Yet, in this paper, I argue that this is only one form that the problem of ‘quackery’ has taken in the past two centuries or so in the United Kingdom. Just as Roy Porter showed how the mid-19th century professionalization of medicine gave rise to a ‘quackery with a difference’ as a whole range...

  10. Hall A

    Data.gov (United States)

    Federal Laboratory Consortium — The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electroand photo-induced reactions at very high luminosity...

  11. A madruga

    Directory of Open Access Journals (Sweden)

    Porfirio Robau

    2015-03-01

    Full Text Available Yo soy de allá, de Madruga, un pueblo próspero y sano, adonde la piel del llano no envejece ni se arruga. De donde el guajiro enyuga los bueyes de madrugada, y la carreta cargada, del corte al basculador va repartiendo un olor a caña recién cortada.   Madruga, verde paisaje de valles, lomas y ríos, de pintorescos bohíos y cielo azul sin celaje. Desde mi último viaje no sé de tus cordilleras tus calles tus palmeras ni el hogar que yo tenía, adonde alegre vivía sin pesares ni quimeras.   Porfirio Robau (1914-1993 Poeta Cubano

  12. Q & A

    Directory of Open Access Journals (Sweden)

    Prof.. Adam Micolich

    2012-07-01

    Full Text Available Prof. Adam Micolich is a researcher based at the University of New South Wales, specializing in the study of semiconductor systems. Materials Today recently spoke to Adam for our podcast.

  13. Bisphenol A

    Science.gov (United States)

    ... Radon Solvents Styrene Sulfur Dioxide Toluene Uranium Volatile Organic Compounds (VOCs) For Educators Introduction Tox Town-Based Curriculum Units / Science Club Careers in Environmental Health, Chemistry, and Toxicology More Resources Bisphenol A (BPA) en ...

  14. A Symposium.

    Science.gov (United States)

    Rachal, John R.

    2003-01-01

    Uses the framework of a symposium to present an imagined discussion by historical figures about whether and how knowledge might be acquired. Discussants include Democritus, Protagoras, Heraclitus, Socrates, Jesus, Gorgias, Nietzsche, Buddha, and Kierkegaard. (Contains 40 endnotes.) (SK)

  15. A laser

    Energy Technology Data Exchange (ETDEWEB)

    Togo, N.

    1984-06-19

    The development of an improved gas laser system employing pumping of the active gaseous medium is reported. The layout of the design is given and its principle of operation is described in detail. The oil reservoir in the vacuum pump which pumps the gas through the laser system is separated by a sealing element; when this element fails, the oil may pollute the active medium. It is proposed that an additional oil reservoir pumping loop be used with the pump that operates continuously and maintains a lower pressure in the reservoir. The pressure in the reservoir is monitored by a special sensor. When the sealing element fails, the pressure sensor records the pressure drop in the oil reservoir. A signal is then generated and the laser system ceases operation, and eliminates the possibility for the oil penetrating into the pumping system.

  16. A laser

    Energy Technology Data Exchange (ETDEWEB)

    Togo, N.; Syundzo, Yo.

    1984-06-19

    It is reported that an improved gas laser design using pumping of the active medium has been developed. A diagram of the laser system is given in graph form and its principle of operation is briefly described. A special sealing element is used in such lasers to seal the reservoir containing the oil in the pump which pumps the gas active medium. When the sealing element fails, there is the danger of oil penetration into the active laser medium. It is proposed that an additional pump which continually evacuates the oil reservoir during laser system operation be used. Thus, a low pressure is maintained in the reservoir. If the sealing element fails, the secondary pump generates a gas flow from the pumping system to the reservoir and eliminates gas penetration into the laser medium.

  17. A110

    Directory of Open Access Journals (Sweden)

    T. Malivanova

    2015-11-01

    Conclusions: This study found out the opposite effect of polymorphisms at −238 and −308 positions in TNF promoter on the outcome of BC patients. Carriers of low expressed allele −238(A have poor outcome because of low response to standard hormone therapy which presumably connected with the activation of Her2 pathway. The obtained results allow supposing that a special approach to the treatment of this group of BC patients should be used.

  18. A JOKE

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Grandpa and granddaughter were sitting talking when she asked,“Did God make you,Grandpa?”“Yes,God made me,”the grandfather answered.A few minutes later,the little girl asked him,“Did God make me too?”“Yes,He did,”the older man answered.For a few minutes,the little girl seemed to be studying

  19. A Queda

    Directory of Open Access Journals (Sweden)

    ANTÔNIO LASSANCE

    2009-11-01

    Full Text Available O mundo é outro, desde a queda do Muro
    de Berlim. Ela representa o fim do século XX, da
    geografia baseada na divisão entre Primeiro, Segundo
    e Terceiro Mundos e do modelo monolítico soviético.
    Após a queda, expandiu-se o processo de formação
    de blocos econômicos e o surgimento de um pólo
    dinâmico do capitalismo que muitos consideram
    como sinal de um novo ciclo hegemônico (asiático,
    capitaneado pela China. Mas os dilemas e riscos
    atuais não são menores do que os do passado. Que
    o digam a queda das torres gêmeas e o ataque ao
    Pentágono, no 11 de setembro de 2001, a proliferação
    de redes terroristas, a ameaça nuclear latente e as
    crises econômicas sistêmicas.

  20. A School without a Principal.

    Science.gov (United States)

    Barnett, Demian; McKowen, Charlene; Bloom, Gary

    1998-01-01

    Teachers at a central California high school operate the school according to a strict, progressive set of principles. The Anzar communication guidelines specify teachers' commitment to communicating well, collective ownership of problems and problem solving, tolerance of differing ideas, individual accountability, dedication to helping and…

  1. A Wolf and a Dog

    Institute of Scientific and Technical Information of China (English)

    薛刘阳; 方言(注); 陈恩枫(指导老师)

    2007-01-01

    A wolf and a dog live near the farm.One day,the wolf was very hungry.So he wanted to eat something.The wolf saw some chickens on the farm.He thought,"Oh,I'd like to eat them!"At night,the wolf ran into the chickens' home slyly.

  2. A Marshmallow and a Song

    Science.gov (United States)

    Kenney, Susan

    2009-01-01

    Music exists in time. One cannot get to the end of the song before going through the song. Is this significant for helping children wait? And can the way we present a singing game activity intensify the delay of what might be a gratifying moment at the end of the song? In this article, the author reflects on whether music can teach delayed…

  3. A Blizzard of a Value

    Science.gov (United States)

    Bostic, Jonathan D.

    2015-01-01

    "Who has been to Dairy Queen® and purchased a Blizzard?®" Ms. Bosetti asked her students. During the summer, Bosetti had seen many of her former and future students at the local Dairy Queen enjoying Blizzard desserts and wondered, "Which Blizzard size is the best value?" She used this context for a ratios and proportions task…

  4. A Giant or a Dwarf?

    DEFF Research Database (Denmark)

    Schmid, Herman

    2005-01-01

    EU may appear to be a giant when it can act on behalf of a united Europe, but usually it is hampered by conflicting member state interests. The EU economic and administrative resources for foreign and trade policy are quite small (on level with one of its major member states) and the hopes in man...

  5. SUDOKU A STORY & A SOLVER

    Energy Technology Data Exchange (ETDEWEB)

    GARDNER, P.R.

    2006-04-01

    Sudoku, also known as Number Place, is a logic-based placement puzzle. The aim of the puzzle is to enter a numerical digit from 1 through 9 in each cell of a 9 x 9 grid made up of 3 x 3 subgrids (called ''regions''), starting with various digits given in some cells (the ''givens''). Each row, column, and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability. Although first published in a U.S. puzzle magazine in 1979, Sudoku initially caught on in Japan in 1986 and attained international popularity in 2005. Last fall, after noticing Sudoku puzzles in some newspapers and magazines, I attempted a few just to see how hard they were. Of course, the difficulties varied considerably. ''Obviously'' one could use Trial and Error but all the advice was to ''Use Logic''. Thinking to flex, and strengthen, those powers, I began to tackle the puzzles systematically. That is, when I discovered a new tactical rule, I would write it down, eventually generating a list of ten or so, with some having overlap. They served pretty well except for the more difficult puzzles, but even then I managed to develop an additional three rules that covered all of them until I hit the Oregonian puzzle shown. With all of my rules, I could not seem to solve that puzzle. Initially putting my failure down to rapid mental fatigue (being unable to hold a sufficient quantity of information in my mind at one time), I decided to write a program to implement my rules and see what I had failed to notice earlier. The solver, too, failed. That is, my rules were insufficient to solve that particular puzzle. I happened across a book written by a fellow who constructs such puzzles and who claimed that, sometimes, the only tactic left was trial and error. With a trial and error routine implemented, my solver successfully completed the Oregonian puzzle, and has successfully

  6. Thailandepsin A

    Directory of Open Access Journals (Sweden)

    Cheng Wang

    2011-11-01

    Full Text Available Thailandepsin A [systematic name: (E-(1S,5S,6R,9S,20R-6-[(2S-butan-2-yl]-5-hydroxy-20-[2-(methylsulfanylethyl]-2-oxa-11,12-dithia-7,19,22-triazabicyclo[7.7.6]docosa-15-ene-3,8,18,21-tetraone], C23H37N3O6S3, is a newly reported [Wang et al. (2011. J. Nat. Prod. doi:10.1021/np200324x] bicyclic depsipeptide that has potent histone deacetylase inhibitory activity and broad-spectrum antiproliferative activity. The absolute configuration of thailandepsin A has been determined from the anomalous dispersion and the stereochemistry of all chiral C atoms. Intramolecular N—H...O and N—H...S hydrogen bonds occur. Intermolecular N—H...O and O—H...O hydrogen bonds are observed in the crystal structure.

  7. A Model

    Institute of Scientific and Technical Information of China (English)

    Liu Zhiyang

    2011-01-01

    Similar to ISO Technical Committees,SAC Technical Committees undertake the management and coordination of standard's development and amendments in various sectors in industry,playing the role as a bridge among enterprises,research institutions and the governmental standardization administration.How to fully play the essential role is the vital issue SAC has been committing to resolve.Among hundreds of SAC TCs,one stands out in knitting together those isolated,scattered,but highly competitive enterprises in the same industry with the "Standards" thread,and achieving remarkable results in promoting industry development with standardization.It sets a role model for other TCs.

  8. A madruga

    OpenAIRE

    Porfirio Robau

    2015-01-01

    Yo soy de allá, de Madruga, un pueblo próspero y sano, adonde la piel del llano no envejece ni se arruga. De donde el guajiro enyuga los bueyes de madrugada, y la carreta cargada, del corte al basculador va repartiendo un olor a caña recién cortada.   Madruga, verde paisaje de valles, lomas y ríos, de pintorescos bohíos y cielo azul sin celaje. Desde mi último viaje no sé de tus cordilleras tus calles tus palmeras ni el h...

  9. A Life for a Life

    Institute of Scientific and Technical Information of China (English)

    严寒

    2004-01-01

    The English author, Richard Savage, was once living in London ingreat poverty. In order to earn a little money he had written the story" ofhis life. But not many copies of the book had been sold in the shops, and

  10. A75

    Directory of Open Access Journals (Sweden)

    D. Korobkov

    2015-11-01

    It may be concluded that the cellular and molecular mechanisms of breast cancer are complex. Therefore, carcinogenesis has a “multistep” nature and at least two or more mutations in the cells of the same clone – parent and child are required to generate malignant tumors. Thus, the development of oncogenic transformation does not necessarily mean the process of tumor formation.

  11. A Beginning.

    Science.gov (United States)

    Healy, Mary K.; Root, Phyllis

    Selected for their focus on man, acting to know, preserve and improve his environment, the items noted in this booklet furnish a resource base for developing an environmental ethic. Introductory statements enumerate values, understandings, and realizations to be developed and sample activities that may be conducted or adapted for grades K-12.…

  12. A111

    Directory of Open Access Journals (Sweden)

    L. Buchynska

    2015-11-01

    Conclusion: Quantitative changes of some components of the tumor microenvironment such as CD4+-, CD8+-, FOXP3+-lymphocytes and content of FOXP3+-tumor cells correlate with the biological characteristics of EC and apparently have a significant role in the progression of this cancer.

  13. Appendix A

    DEFF Research Database (Denmark)

    Henriksen, M. S.; Brincker, Rune; Heshe, Gert

    1999-01-01

    In this appendix a brief summary of experiments on reinforced concrete beams in three-point bending performed at Aalborg University is given. The aim of the investigation is to determine the full load-deflection curves for different beam sizes, different types of concrete and different amounts an...

  14. A Pulsar and a Disk

    Science.gov (United States)

    Kohler, Susanna

    2016-07-01

    Recent, unusual X-ray observations from our galactic neighbor, the Small Magellanic Cloud, have led to an interesting model for SXP 214, a pulsar in a binary star system.Artists illustration of the magnetic field lines of a pulsar, a highly magnetized, rotating neutron star. [NASA]An Intriguing BinaryAn X-ray pulsar is a magnetized, rotating neutron star in a binary system with a stellar companion. Material is fed from the companion onto the neutron star, channeled by the objects magnetic fields onto a hotspot thats millions of degrees. This hotspot rotating past our line of sight is what produces the pulsations that we observe from X-ray pulsars.Located in the Small Magellanic Cloud, SXP 214 is a transient X-ray pulsar in a binary with a Be-type star. This star is spinning so quickly that material is thrown off of it to form a circumstellar disk.Recently, a team of authors led by JaeSub Hong (Harvard-Smithsonian Center for Astrophysics) have presented new Chandra X-ray observations of SXP 214, tracking it for 50 ks (~14 hours) in January 2013. These observations reveal some very unexpected behavior for this pulsar.X-ray PuzzleThe energy distribution of the X-ray emission from SXP 214 over time. Dark shades or blue colors indicate high counts, and light shades or yellow colors indicate low counts. Lower-energy X-ray emission appeared only later, after about 20 ks. [Hong et al. 2016]Three interesting pieces of information came from the Chandra observations:SXP 214s rotation period was measured to be 211.5 s an increase in the spin rate since the discovery measurement of a 214-second period. Pulsars usually spin down as they lose angular momentum over time so what caused this one to spin up?Its overall X-ray luminosity steadily increased over the 50 ks of observations.Its spectrum became gradually softer (lower energy) over time; in the first 20 ks, the spectrum only consisted of hard X-ray photons above 3 keV, but after 20 ks, softer X-ray photons below 2 ke

  15. A, a Brominated Flame Retardant

    Directory of Open Access Journals (Sweden)

    Tomomi Takeshita

    2013-01-01

    Full Text Available Tetrabromobisphenol A (TBBPA, a brominated flame retardant, has been found to exacerbate pneumonia in respiratory syncytial virus- (RSV- infected mice. We examined the effect of Brazilian propolis (AF-08 on the exacerbation of RSV infection by TBBPA exposure in mice. Mice were fed a powdered diet mixed with 1% TBBPA alone, 0.02% AF-08 alone, or 1% TBBPA and 0.02% AF-08 for four weeks and then intranasally infected with RSV. TBBPA exposure increased the pulmonary virus titer and level of IFN-γ, a representative marker of pneumonia due to RSV infection, in the lungs of infected mice without toxicity. AF-08 was significantly effective in reducing the virus titers and IFN-γ level increased by TBBPA exposure. Also, AF-08 significantly reduced proinflammatory cytokine (TNF-α and IL-6 levels in the lungs of RSV-infected mice with TBBPA exposure, but Th2 cytokine (IL-4 and IL-10 levels were not evidently increased. Neither TBBPA exposure nor AF-08 treatment affected the anti-RSV antibody production in RSV-infected mice. In flow cytometry analysis, AF-08 seemed to be effective in reducing the ratio of pulmonary CD8a+ cells in RSV-infected mice with TBBPA exposure. TBBPA and AF-08 did not exhibit anti-RSV activity in vitro. Thus, AF-08 probably ameliorated pneumonia exacerbated by TBBPA exposure in RSV-infected mice by limiting excess cellular immune responses.

  16. A mascarada e a feminilidade

    Directory of Open Access Journals (Sweden)

    Grant Walkiria Helena

    1998-01-01

    Full Text Available Marcada por produções freudianas, a literatura analítica e, mais especificamente, aquela influenciada pelo ensino lacaniano, não pára de mostrar que as considerações anatômicas não são índices para falar da diferença de identidade sexual entre homens e mulheres. Diante do fato de que características masculinas continuavam presentes em mulheres adultas normais, Freud responde que ser mulher é ser mãe. A vacilação da verdade desta equação pode ser observada nas situações mais diversas nas quais podemos nos defrontar com mulheres, mães, desempenhando papéis de homens. Como pensar esta constatação? Este trabalho permitir-nos-á mostrar a imbricação do feminino e do masculino num caso de uma mulher com todas as características de uma feminilidade considerada normal, e também discutir a questão do gozo fálico e do Outro gozo - propostos por Lacan como índices de diferenciação da posição masculina e da feminina.

  17. A115

    Directory of Open Access Journals (Sweden)

    E. Dmitrieva

    2015-11-01

    Conclusion: Head and neck tumors are a rare group of clinically and biologically diverse neoplastic diseases. Among the residents of the Chelyabinsk region, men are 2–3 times more susceptible to cancer of the oral cavity and pharynx than women. High mortality rate is due to late referral of patients to specialized clinics; most head and neck cancer patients are diagnosed at advanced stages.

  18. A Valedictory

    Science.gov (United States)

    Lagowski, J. J.

    1996-08-01

    "No man is an Iland, intire of it selfe.". These words were written by John Donne, the Dean of St. Paul's, and appear as his 17th Meditation in "Devotions upon emergent Occasions and several steps in my Sickness," published in 1624, a work in which he reflects upon his life in the midst of a serious illness (most likely typhus). Like many literary works, the words are timeless, and their meaning is not constrained to the occasion of their birth. Donne's meditation is easily transferred to the person who was, is, or will be, editor of this or any journal. No editor is an island. No editor can honestly claim to be "intire of it selfe." The Editor of the Journal rides on the tide generated by his staff, his reviewers, and his readers. I have been blessed with a marvelous staff, enormously energetic and dedicated. They have always been willing to go the last mile--and more if need be. Most--but not all--came to the Journal soon after it arrived in Austin. The bedrock on which the Journal has been built is its numerous reviewers, too many to thank individually on this page, but appreciated nonetheless for their individual contributions. Reviewers define the quality of a journal, and we have had a superb cohort working for us--voluntarily. I have to apologize publicly to some (you know who you are) who were abused by repeated requests on a short time base for their comments on manuscripts. This condition, which occurred more often than I would have liked, arose from the idiosyncratic confluence of manuscript flow, momentarily popular topics, and the need for certain kinds of expertise. I know that multiple requests for comments came too rapidly in some cases, but it was of paramount importance to get "good reviews" whom I could trust, and I knew where to turn. Thanks to all of you who stepped forward in such circumstances, with grace and good humor, to produce the quality reviews that were so valuable to me. No editor is an "Iland, intire of it selfe," especially when it

  19. A Stone and a Diamond

    Institute of Scientific and Technical Information of China (English)

    司亮

    2010-01-01

    一、故事内容 After a storm, a dry river is filled with water again. Many stones fall down into the river from the hill. Most of the stones are very happy. They sing and dance together. There are two special (特别的) stones. One is black, and the other is white. The white stone is as white as snow. She is proud of herself and she looks down on all the other stones. So no one wants to play with her.

  20. A LDB e a psicologia

    Directory of Open Access Journals (Sweden)

    Oswaldo H. Yamamoto

    Full Text Available Este estudo discute as implicações para a formação acadêmica e para o exercício profissional do psicólogo, da aprovação da Lei de Diretrizes e Bases da Educação Nacional (LDB. São pontuados alguns dos pressupostos subjacentes à lei, os aspectos principais do texto legal e algumas de suas decorrências, como a regulamentação dos cursos seqüenciais e diretrizes curriculares.

  1. A Leader, Not a Hero

    Science.gov (United States)

    Rutledge, Lynda

    2005-01-01

    The author writes her experience in leading. She points out that a good leader should know when and how to let go than trying to do all the work by herself. It changed her focus on looking at details, implementation, dealing with the contractors, to leading leading people.

  2. A Question about a Triangle

    Science.gov (United States)

    Vinogradova, Natalya

    2016-01-01

    In fall 2013 the author taught a graduate course entitled Topics in Geometry for Middle and High School Teachers. The majority of the participants had extensive experience teaching mathematics in middle school or high school. The fact that participants were rather comfortable with the basic concepts of school geometry made it both possible and…

  3. A quackery with a difference

    DEFF Research Database (Denmark)

    Wahlberg, Ayo

    2007-01-01

    The figure of the ‘miracle cure’-peddling quack pretending spectacular properties for worthless tonics is iconic. From their 19th century traveling wagon shows to their 21st century Internet spam scams, hucksters and cranks have been consistently targeted by health authorities as a danger to publ...

  4. A112

    Directory of Open Access Journals (Sweden)

    E. Kisseleva

    2015-11-01

    Full Text Available Recruitment of mononuclear phagocytes from the blood into tissues is considered to be a crucial process during inflammatory reactions, wound healing and tumor growth. Macrophages are known to reveal high plasticity and may change under the influence of microenvironment. The aim of the study was to evaluate the changes of macrophage functional activity under the influence of Vascular endothelial growth factor (VEGF in vitro. This factor is known to be the main angiogenic factor but also possesses several immunomodulatory properties. Here we report that VEGF revealed a dose-dependent effects on cultured freshly isolated murine resident peritoneal macrophages: modulated iNOS mRNA expression, nitroxide and superoxide anion production, decreased 5′-nucleotidase (5′-N activity, but had no influence on fluid-phase pinocytosis. Moreover, VEGF increased expression of its own mRNA via autocrine pathway as well as of VEGF protein expression. VEGF also induced up-regulation of extracellular matrix protein thrombospondin-1 (TSP-1 mRNA, which is considered as a part of macrophage activation phenotype. Production of cytokines and chemokines by macrophages was screened with the help of Multi- analyte ELISArray kits. It was found that incubation of macrophages in the presence of VEGF increased the production of angiogenic cytokines – TNF-α and IL-6 as well as several monocyte and leukocyte chemoattractants such as MCP-1, RANTES and MIP-1β. Therefore, we suggest that locally established VEGF gradient may influence inflammatory phenotype of tissue macrophages as well as potentiate their pro-angiogenic properties. This work was supported by Russian Foundation for Basic Research – Russia, Grant No. 15-04-06150.

  5. A honra e a vida

    OpenAIRE

    Hentz, Isabel Cristina

    2013-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em História, Florianópolis, 2013. A primeira grande legislação aprovada no período republicano, antes ainda do primeiro aniversário da República brasileira, foi o Codigo Penal dos Estados Unidos do Brazil. Publicada em 1890, substituiu o Codigo Criminal do Império do Brazil, de 1830. A aprovação do Código Penal de 1890 introduziu pela primeira vez na legislação...

  6. A violencia contra a muller

    OpenAIRE

    Rodríguez Calvo, María Sol

    2013-01-01

    Grao en Medicina Esta unidade didáctica denominada “Violencia contra a muller”, está incluída no bloque de “Clínica forense” da materia “Medicina legal”, que se imparte no segundo semestre do 5º curso do Grao en Medicina. Esta materia é froito da interrelación entre a Medicina e o Dereito nun dobre sentido: o primeiro refírese á aplicación dos coñecementos médicos para resolver cuestións xudiciais (Medicina legal propiamente dita). O segundo ocúpase da regulación xurídica da práctica médic...

  7. A Whale of A Controversy

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Despite heavy international criticism,the Japanese refuse to end their national tradition of whale hunting When the Japanese whale-hunting fleet set sail for the Antarctic waters on November 18,the crew members must have known that their voyage would not be smooth sailing. Japan’s annual whaling program rou- tinely sets off a firestorm of protest from anti-whaling countries and organizations. In January 2006,Greenpeace’s icebreaker Arctic Sunrise collided with the Jaoanese

  8. A TYPICAL ANTIPSYCHOTIC: A REVIEW

    Directory of Open Access Journals (Sweden)

    Mukesh Ratnaparkhi

    2010-12-01

    Full Text Available Recent advances in understanding the pathophysiology of underlying psychotic disorder and subsequent development of new antipsychotic drugs to treat these diseases have altered clinicians? pharmacological approach. It has also helped researcher to produce a new generation antipsychotic agents (NGA which could show better clinical results. However methodical approach as well as in-depth research in this area has provided several potent atypical antipsychotic agents. Now days all the atypical antipsychotics agents are FDA approved and being frequently used for pharmacotherapy of schizophrenia, acute mania, bipolar mania, psychotic agitation, bipolar maintenance, and other indications. Atypical antipsychotics are associated with the numbers of clinical benefits such as higher rate of responders, efficiency in patients with refractory disease, lower risk of suicides, better functional capacity and an improved quality of life and thus, have showed their efficacy against previous modes of treatment. The present review highlights the advantages, disadvantages as well as risk factors associated with novel antipsychotic agent with a view to outline their future scope.

  9. Blood Test: Immunoglobulin A (IgA)

    Science.gov (United States)

    ... Your 1- to 2-Year-Old Blood Test: Immunoglobulin A (IgA) KidsHealth > For Parents > Blood Test: Immunoglobulin A (IgA) Print A A A What's in ... An IgA test measures the blood level of immunoglobulin A, one of the most common antibodies in ...

  10. A midface swelling in a child - A possible diagnostic dilemma.

    Science.gov (United States)

    Patel, Kuntal; Oudit, Deemesh; Ross, G; Nicolson, Caroline; Howcroft, Aj

    2005-01-01

    A lump on the midface of a child can pose as a diagnostic dilemma. There is a wide variety of possible differential diagnoses, ranging from simple benign conditions such as a sebaceous cyst, dermoid cyst, lipoma, neuroma and neurofibroma, to potentially devastating conditions such as odontogenic myxoma. A case of a child in which the formulation of a definite diagnosis was clinically and histologically challenging is presented.

  11. The Northrop A-17A Nomad

    Science.gov (United States)

    1938-01-01

    The Northrop A-17A Nomad: Although another A-17 was used as a cowling testbed, this Northrop A-17A was only slightly modified during the course of its short NACA career at Langley. These modifications were done to determine the profile drag of a wing in flight.

  12. Relaparotomía a demanda. Factores asociados a mortalidad

    OpenAIRE

    José Luis Martínez-Ordaz; Roberto Manuel Suárez-Moreno; Óscar Javier Felipez-Aguilar; Roberto Blanco-Benavides

    2005-01-01

    Objetivo: revisar los factores asociados con la mortalidad de los pacientes sometidos a relaparotomía a demanda. Introducción: algunos pacientes sometidos a laparotomía son reintervenidos debido a complicaciones agudas. Pueden ser manejados de manera programada o conforme su evolución. Todavía no está determinado cuál de los dos abordajes es mejor. Material y métodos: 33 pacientes fueron relaparotomizados a demanda en un servicio de cirugía general. Resultados: en total se realizaron 51 relap...

  13. A method for making a hydrogen electrode

    Energy Technology Data Exchange (ETDEWEB)

    Ikeyama, M.; Ivaki, T.; Yanagikhara, N.

    1983-09-08

    A metallic grid is pressed to the surface of a foam metallic plate which contains powders of a compound which adsorb H2. The electrode is processed at the powder caking temperature. The electrode has a long service life.

  14. A Stroke Mimic: A Case Report

    Directory of Open Access Journals (Sweden)

    Annia Martínez Rivas

    2016-03-01

    Full Text Available Diseases mimicking a stroke are a major health problem for a large number of hospitals. This paper aims at presenting a disease that has a stroke-like presentation. The case of a 46-year-old man admitted to the stroke unit with a clinical and radiological diagnosis of cerebral infarction is presented. The patient developed fever and a serious deterioration of consciousness. Changes on computed tomography consistent with a brain abscess were observed. Broad-spectrum antibiotics were administered and a follow-up tomography was performed. Once the treatment was completed, the clinical and radiological suspicion of a brain abscess was confirmed.

  15. A Bíblia e a cultura

    OpenAIRE

    Gonçalves, Joaquim Cerqueira

    2005-01-01

    1. Pensar a Bíblia 2. A Bíblia e a cultura 3. Bíblia, cultura e linguagem 4. A revelação 5. O possível, o irrecusável e a Escritura 6. A Bíblia e as culturas no horizonte da ontologia 7. Jesus Cristo e a comunidade: manifestação ontológica 8. A religião cristã e as culturas

  16. A SOLUTION OF A GENERAL EQUILIBRIUM PROBLEM

    Institute of Scientific and Technical Information of China (English)

    H.R. SAHEBI; A. RAZANI

    2013-01-01

    Under the framework of a real Hilbert space, we introduce a new iterative method for finding a common element of the set of solution of a general equilibrium problem and the set of fixed points of a nonexpansive semigroup. Moreover, a numerical example is presented. This example grantee the main result of the paper.

  17. Choosing a Breast Prosthesis: A Survivor's Perspective

    Science.gov (United States)

    ... Choosing a Breast Prosthesis: A Survivor’s Perspective Choosing a Breast Prosthesis: A Survivor’s Perspective Andrea Zinn June 16, 2015 · Amber ... preferences. Q: Why did you decide to wear a breast form/prosthesis rather than have a reconstruction? ...

  18. A case of a horseshoe appendix

    OpenAIRE

    Takabatake, Kazuya; Ikeda, Jun; Furuke, Hirotaka; Kato, Chikage; Kishimoto, Takuya; Kumano, Tatsuya; Imura, Kenichiro; Shimomura, Katsumi; Kubota, Takeshi; Taniguchi, Fumihiro; Shioaki, Yasuhiro

    2016-01-01

    Anomalies of the appendix are extremely rare, and a horseshoe appendix is even rarer. A literature search has revealed only five reported cases. In this report, we present a case of a horseshoe appendix. A 78-year-old man was referred for further examination following a positive fecal occult blood test. A mass in his ascending colon was detected on colonoscopy, while computed tomography showed that it was connected to the appendix. Tumor invasion derived from the ascending colon or appendix w...

  19. A batuta da morte a orquestrar a vida

    Directory of Open Access Journals (Sweden)

    Altair Macedo Lahud Loureiro

    Full Text Available Com colocações de outros estudiosos da morte, teço e apresento apontamentos rápidos sobre a morte a organizar a vida. Esposo a idéia da necessidade da morte para que a vida tenha sentido nesta busca humana da completude. Endereço o olhar para uma situação especial de relação com a morte: a reação dos que ficam ao presenciar e sentir a morte de um dos seus idosos; daquele familiar, ou não, que assume o seu cuidado e acompanha o seu fim iminente; que presencia, humanamente impotente, a hora da solitária partida. Solitária morte, pois que exclusiva, própria daquele idoso do qual cuidava, do seu fim natural, por ser humano.

  20. A Little Area Challenge: A Sod Story

    Science.gov (United States)

    Myers, Perla L.; Pelak, Colleen N.

    2012-01-01

    As partners in a professional development project, the authors jumped at the opportunity to use a real-life problem to engage elementary and middle school teachers in a one-day exploration of the concept of area. "Length times width"--a common response to the question, "What is area?"--is a rote formulaic expression that applies only to certain…

  1. A farmer becomes a social pedagogue

    DEFF Research Database (Denmark)

    Mellon, Karsten

    2016-01-01

    is a tremendously complex process that involves taking on a new professional identity and acquiring new skills. In order to ascertain the extent of this complexity, this article uses a psychosocietal approach derived from a Danish/German life history research approach. This article offers a brief presentation...

  2. A psychological profile of a serial killer: a case report.

    Science.gov (United States)

    Dogra, T D; Leenaars, Antoon A; Chadha, R K; Manju, Mehta; Lalwani, Sanjeev; Sood, Mamta; Lester, David; Raina, Anupuma; Behera, C

    2012-01-01

    Serial killers have always fascinated society. A serial killer is typically defined as a perpetrator who murders three or more people over a period of time. Most reported cases of serial killers come from the United States and Canada. In India, there are few reported cases. We present, to the best of our knowledge, the first Indian case in the literature. The present case is of a 28-year-old man, Surinder Koli. The Department of Forensic Medicine & Toxicology, All India Institute of Medical Sciences, New Delphi handled the forensic study. We present a most unique psychological investigation into the mind of a serial killer.

  3. Having a Whale of a Time

    Science.gov (United States)

    du Feu, Chris

    2009-01-01

    A classroom practical exercise exploring the reliability of a basic capture-mark-recapture method of population estimation is described using great whale conservation as a starting point. Various teaching resources are made available.

  4. Helping a Child Manage a Chronic Illness

    Science.gov (United States)

    ... https://medlineplus.gov/news/fullstory_160011.html Helping a Child Manage a Chronic Illness Feeling they have control over their ... News) -- Children and teens who feel confident handling a chronic illness on their own appear better able ...

  5. Scarlet Fever: A Group A Streptococcal Infection

    Science.gov (United States)

    ... this? Submit Button Past Emails CDC Features Scarlet Fever: A Group A Streptococcal Infection Language: English Español ( ... red rash that feels rough, like sandpaper. Scarlet Fever Podcast A pediatrician explains the cause, treatment, and ...

  6. SIX SIGMA: A METRIC, A METHODOLOGY AND A MANAGEMENT SYSTEM

    Directory of Open Access Journals (Sweden)

    Mureşan Ioana

    2010-07-01

    Full Text Available This article is a theoretical article regarding Six Sigma. Six Sigma has been interpreted over time within quality theory as a metric, methodology or a management system. We explain Six Sigma using a logistics context: Delivery-On-Time (DOT rate problem. It is a theoretical context useful both for academic users and practitioners. At the beginning of the paper the DOT problem is generally described, while Sigma is presented according to statisticians view in the second part of the paper. Six Sigma is then presented as a metric for process’ capability. The fourth part of this article contains details regarding Six Sigma usage as a methodology for improvement, while the fifth part of this article refers to Six Sigma as a management system which can be used at firms’ level. The last chapter is dedicated to conclusions regarding the possible use of Six Sigma in Romania.

  7. Tiling a figure using a height in a tree

    Energy Technology Data Exchange (ETDEWEB)

    Remila, E. [Institut Universitaire de Technologie de Roanne, Paris (France)

    1996-12-31

    We first give a new presentation of an algorithm from Thurston of tiling with lozenges formed from two cells of the triangular lattice A. Secondly we extend the method to get a linear algorithm of tiling with leaning dominoes (parallelograms formed from four cells of {Lambda}) and triangles (formed from four cells of {Lambda}). Thirdly, we produce a quadratic algorithm of tiling with leaning dominoes.

  8. A JUSTIÇA EM TERMOS HUMEANOS

    OpenAIRE

    Elcio Alcione Cordeiro

    2010-01-01

    Apresento neste breve artigo uma noção de justiça segundo o pensamento de DavidHume. A justiça humeana se posiciona totalmente em prol da ordem social, isto é, o objetivo éque a segurança na sociedade seja instaurada. Para que isso aconteça de fato, é preciso quealgumas regras desta virtude artificial venham a ser respeitada por todos os homens. Ajustificação da propriedade é uma máxima que deve ser assegurada estavelmente. Os homensestão predispostos ao egoísmo que vence a benevolência natur...

  9. A method for making a nickel electrode

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, I.; Ikeyama, M.; Isikava, T.; Ivaki, T.; Yanashkhara, N.

    1983-07-14

    A powder of an active mass is applied to a foam metal plate and it is pressed into the pores of the base. The excess mass is removed from the surface, after which a grid structure is formed on this surface with heating of a powder of a thermally seating resin of the polyethylene type. Then, submerging the electrode plate into the resin suspension, the entire surface of the electrode is covered with a thin layer of powder of a fluorine bearing resin. The electrode has a long service life.

  10. A new peritrichous Ciliate as a symphoriont on a Tardigrade

    NARCIS (Netherlands)

    Land, van der J.

    1964-01-01

    INTRODUCTION On 24 September 1962 a number of Tardigrada was obtained from a sample of lichens from the French Alps. The lichens had been collected Figs. 1, 2. Pyxidium tardigradum n. sp. on Hypsibius oberhaeuseri (Doy.). on 27 June 1961 from a rock in the department Haute Savoie and had been preser

  11. A Study of Urban Education. A Report.

    Science.gov (United States)

    Illinois State School Problems Commission, Springfield.

    To obtain a clearer understanding of the problems of urban education in Illinois, a committee of seven State legislators and 14 lay citizens engaged in a three-part study: (1) A series of statewide public hearings was held, resulting in 27 proposed solutions, and five universities submitted plans for their increased participation in the…

  12. [A woman with a rare vascular malformation

    NARCIS (Netherlands)

    Koning, G.G.; Vries, M. de

    2015-01-01

    A 30-year-old woman with trisomy 8 syndrome and coagulopathy was diagnosed with a malformation of the vena cava superior. This is a rare anatomical variation, which originates from a non-development of Marshall's ligament during the 8th week of gestation (prevalence: 0.3%).

  13. A JUSTIÇA EM TERMOS HUMEANOS

    Directory of Open Access Journals (Sweden)

    Elcio Alcione Cordeiro

    2010-01-01

    Full Text Available Apresento neste breve artigo uma noção de justiça segundo o pensamento de DavidHume. A justiça humeana se posiciona totalmente em prol da ordem social, isto é, o objetivo éque a segurança na sociedade seja instaurada. Para que isso aconteça de fato, é preciso quealgumas regras desta virtude artificial venham a ser respeitada por todos os homens. Ajustificação da propriedade é uma máxima que deve ser assegurada estavelmente. Os homensestão predispostos ao egoísmo que vence a benevolência natural. A partir do momento em queos homens percebem que são egoístas e que viver em sociedade é vantajoso, acrescentam-seentão as convenções para que a ordem social seja instaurada.

  14. Remembering a Shape -- Assembling a Memory

    Science.gov (United States)

    Zeravcic, Zorana; Murugan, Arvind; Brenner, Michael; Leibler, Stanislas

    2014-03-01

    Recently we have been developing a new connection between self-assembly and neural networks, where a multi-component particle system with specified interaction rules between its components is mapped onto a multi-state Hopfield neural network model. Within this framework, a fixed interaction pattern of neurons representing a ``memory'' maps to particle interactions encoding a certain structure. Properties of neural networks motivate new types of questions: Can the interaction energies of particles code for multiple structures at the same time? Can stored structures be retrieved by throwing in a nucleation seed (i.e., a small assembly of particles) and have it complete into the desired stored structure? Can we define a capacity, i.e., a maximal number of structures that can be retrieved with limited error? We investigate these questions using numerical simulations of different types of building blocks with short-range interactions.

  15. 43 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 17

    Science.gov (United States)

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Appendix A to Subpart A of Part 17 A Appendix A to Subpart A of Part 17 Public Lands: Interior Office of the Secretary of the Interior... Race, Color, or National Origin Pt. 17, Subpt. A, App. A Appendix A to Subpart A of Part 17...

  16. A search for a new gauge boson A'

    Energy Technology Data Exchange (ETDEWEB)

    Jensen, Eric L. [College of William and Mary, Williamsburg, VA (United States)

    2013-08-01

    In the Standard Model, gauge bosons mediate the strong, weak, and electromagnetic forces. New forces could have escaped detection only if their mediators are either heavier than order(TeV) or weakly coupled to charged matter. New vector bosons with small coupling {alpha}' arise naturally from a small kinetic mixing with the photon and have received considerable attention as an explanation of various dark matter related anomalies. Such particles can be produced in electron-nucleus fixed-target scattering and then decay to e+e-+ pairs. New light vector bosons and their associated forces are a common feature of Standard Model extensions, but existing constraints are remarkably sparse. The APEX experiment will search for a new vector boson A' with coupling α'/αfs > 6 × 10-8 to electrons in the mass range 65MeV < mass A' < 550MeV. The experiment will study e+e- production off an electron beam incident on a high-Z target in Hall A at Jefferson Lab. The e- and e+ will be detected in the High Resolution Spectrometers (HRSs). The invariant mass spectrum of the e+e- pairs will be scanned for a narrow resonance corresponding to the mass of the A'. A test run for the APEX experiment was held in the summer of 2010. Using the test run data, an A' search was performed in the mass range 175-250 MeV. The search found no evidence for an A' → e+e-reaction, and set an upper limit of {alpha}'/{alpha}{sub fs} ~ 10-6.

  17. A Project Team: a Team or Just a Group?

    OpenAIRE

    Kateřina; Daniela; Martina,

    2014-01-01

    This paper deals with issues related to work in either teams or groups. The theoretical part discusses a team and a group with regards to its definition, classification and basic distinction, brings in more on the typology of team roles, personality assessment and sociometric methods. The analytical part tests the project (work) team of a medical center represented in terms of personality and motivational types, team roles and interpersonal team relations concerning the willingness of coopera...

  18. A Project Team: A Team or Just a Group?

    OpenAIRE

    Katerina Hrazdilova Bockova; Daniela Maťovcikova

    2013-01-01

    This paper deals with issues related to work in either teams or groups. The theoretical part which discusses a team and a group with regards to its definition, classification and basic distinction brings in more on the typology of team roles, personality assessment and sociometric methods. The analytical part tests the project (work) team of a medical center represented in terms of personality and motivational types, team roles and interpersonal team relations concerning t...

  19. [A fetus is a person with a right to exist].

    Science.gov (United States)

    Bischofberger, E

    1989-12-27

    This article is the contribution of a Jesuit priest, a teacher of medical ethics at Uppsala, to a debate inspired by a Swedish official report "The pregnant woman and fetus--2 individuals. On fetal diagnostics. On late abortions." In a society which depends upon a structured consensus as much as Sweden does, the report has been criticized for not making clearer recommendations. The author points out that the ethical dilemmas involved are so complex that they cannot be treated from a simple either/or point of view. Fetal diagnostics, for example, serve the cause of life when the aim is to avoid abortion of a healthy fetus and make it possible to cure, even at the fetal stage, or to strengthen prospective parents' readiness to accept a handicapped child. The use of fetal diagnostic for sorting out damaged and sick fetuses, however, is selective abortion and implies a violation of the principle that all human life is of equal value. The question is no longer if one will have a child or not, but which child will one have. This collision of values has inspired so many polemic statements that it is worthwhile recalling that there is always a tension between the ethically desirable and the politically possible, The report has succeeded in formulating the ethical principles in spite of the impossibility of seeing them presented as concrete recommendations. Even so, Thomas Aquinas wrote in 13th century that one cannot always apply ethical rules to laws of society. That can lead to more evil than good.

  20. A visit to Absurdistan: a nightmare of a sleep specialist.

    Science.gov (United States)

    Rodenstein, Daniel; Duran Cantolla, Joaquin

    2013-12-01

    During a nocturnal dream, the authors discover a strange and unknown country, Absurdistan. Absurdistanis main concern appears to be sleep, whether nocturnal or diurnal, rather than wakefulness. They are fond of sleeping in any form, and devote much time to this activity. The authors follow a guide that shows them all kinds of strange sleep habits and keeps explaining the complex as well as the obvious. As the journey evolves, the explanations turn more and more confusing, becoming also amazingly surrealistic. The dream ends with a welcome wakefulness leaving the authors unsure of which is the waking state and which the dream.

  1. A toy model for a diatomic molecule

    Science.gov (United States)

    Hecker Denschlag, Johannes

    2016-08-01

    We introduce a toy model for a diatomic molecule which is based on coupling electronic and nuclear spins to a rigid rotor. Despite its simplicity, the model can be used scientifically to analyze and understand complex molecular hyperfine spectra. In addition, the model has educational value as a number of fundamental symmetries and conservation laws of the molecule can be studied. Because of its simple structure, the model can be readily implemented as a computer program with comparatively short computing times on the order of a few seconds.

  2. Building a Database for a Quantitative Model

    Science.gov (United States)

    Kahn, C. Joseph; Kleinhammer, Roger

    2014-01-01

    A database can greatly benefit a quantitative analysis. The defining characteristic of a quantitative risk, or reliability, model is the use of failure estimate data. Models can easily contain a thousand Basic Events, relying on hundreds of individual data sources. Obviously, entering so much data by hand will eventually lead to errors. Not so obviously entering data this way does not aid linking the Basic Events to the data sources. The best way to organize large amounts of data on a computer is with a database. But a model does not require a large, enterprise-level database with dedicated developers and administrators. A database built in Excel can be quite sufficient. A simple spreadsheet database can link every Basic Event to the individual data source selected for them. This database can also contain the manipulations appropriate for how the data is used in the model. These manipulations include stressing factors based on use and maintenance cycles, dormancy, unique failure modes, the modeling of multiple items as a single "Super component" Basic Event, and Bayesian Updating based on flight and testing experience. A simple, unique metadata field in both the model and database provides a link from any Basic Event in the model to its data source and all relevant calculations. The credibility for the entire model often rests on the credibility and traceability of the data.

  3. A Condition for a Translation Quiver to Be a Coil

    Institute of Scientific and Technical Information of China (English)

    Bin ZHU; Zong Yi HU

    2003-01-01

    We single out a class of translation quivers and prove combinatorially that the translationquivers in this class are coils. These coils form a class of special coils. They are easier to visualize, butstill show all the strange behaviour of general coils, and contain quasi-stable tubes as special examples.

  4. A Proposal for a Mindset of a Project Manager

    DEFF Research Database (Denmark)

    Eriksson, Joakim; Hansen, Claus Thorp

    2008-01-01

    A company’s product strategy and its management of the product development process have been found to be key factors for a product’s success on the market [1]. Project managers of development projects need support to make process decisions and defining goals that are consistent with the business’...

  5. Giuseppe Moscati: a man, a physician and a scientist.

    Science.gov (United States)

    Ponti, Giovanni; D'Onofrio, Felice; Ruini, Cristel; Muscatello, Umberto; Tomasi, Aldo

    2015-01-01

    The life of Giuseppe Moscati (1880-1927) as a man, as a physician and as a scientist may be framed within the cultural climate of Positivism, which spread over the last years of the 19th century and the beginning of the 20th Century. His activity contributed to patients' care improvement; in addition to meticulous drug regimens, he also prescribed a methodology of spiritual care, involving meditation and self-control as part of an holistic approach to healthcare. Our review deals with his published researches, highlighting the innovative findings on the juvenile diabetes treatment and extensive clinical changes consequent upon nephritis. This extraordinary man put considerable emphasis on primary care and holistic health in Italy, pioneering a new patient-centred, and holistic approach to medicine.

  6. A Project Team: a Team or Just a Group?

    Directory of Open Access Journals (Sweden)

    Kateřina

    2014-06-01

    Full Text Available This paper deals with issues related to work in either teams or groups. The theoretical part discusses a team and a group with regards to its definition, classification and basic distinction, brings in more on the typology of team roles, personality assessment and sociometric methods. The analytical part tests the project (work team of a medical center represented in terms of personality and motivational types, team roles and interpersonal team relations concerning the willingness of cooperation and communication. The main objective of this work is to verify the validity of the assumptions that the analyzed team represents a very disparate group as for its composition from the perspective of personality types, types of motivation, team roles and interpersonal relations in terms of the willingness of cooperation and communication. A separate output shall focus on sociometric investigation of those team members where willingness to work together and communicate is based on the authors’ assumption of tight interdependence.

  7. Generalizing a study of a rotating rod carrying a collar

    Energy Technology Data Exchange (ETDEWEB)

    Campos, I [Departamento de Fisica, Facultad de Ciencias, universidad Nacional Autonoma de Mexico, Apartado Postal 21-939, Mexico 04000 D.F. (Mexico); Del Valle, G; Hernandez, M G [Area de Fisica, Division de Ciencias Basicas e IngenierIa, Universidad Autonoma Metropolitana-Azcapotzalco, Apartado Postal 21-939, Mexico 04000 D.F. (Mexico); Jimenez, J L, E-mail: jlj@xanum.uam.m [Departamento de Fisica, Division de Ciencias Basicas e IngenierIa, Universidad Autonoma Metropolitana-Iztapalapa, Apartado Postal 21-939, Mexico 04000 D.F. (Mexico)

    2010-11-15

    The present work is a generalization of the work of Ribberfors and Reitz (2000 Eur. J. Phys. 21 151-7). These authors study a system consisting of a collar that is restricted to move in a path defined by a rod of some prescribed form which passes through the collar. We generalize the analysis of this system by means of canonical treatment. We show in this way that this excellent example can also be used in advanced courses on mechanics to show the power of the methods of analytical mechanics. We have that the present treatment of this example will be useful for advanced undergraduate and graduate students as well as for the teachers of these courses on classical mechanics. (letters and comments)

  8. Entomology: A Bee Farming a Fungus.

    Science.gov (United States)

    Oldroyd, Benjamin P; Aanen, Duur K

    2015-11-16

    Farming is done not only by humans, but also by some ant, beetle and termite species. With the discovery of a stingless bee farming a fungus that provides benefits to its larvae, bees can be added to this list.

  9. A microcontroller system of a biotelemetric

    Directory of Open Access Journals (Sweden)

    O. B. Sharpan

    2007-10-01

    Full Text Available The system of a short-range biotelemetry is circumscribed which records and transmits biosignals to distance in tens meters. The system is intended for work in a composition of the pulse cardiologic analyzer.

  10. A. A. Laanessaare luule / Ruth Mirov

    Index Scriptorium Estoniae

    Mirov, Ruth, 1928-

    1996-01-01

    Ilmunud ka kogumikus: Mirov, Ruth. Sõnast sõnasse : valik artikleid ja retsensioone. Tallinn ; Tartu : Eesti Keele Sihtasutus, 2002, lk. 200-230. August Annisti luulest, avaldatud A. A. Laanessaare varjunime all

  11. A gas jet impacting a cavity

    Science.gov (United States)

    Stiffler, A. Kent; Bakhsh, Hazoor

    1986-11-01

    A subsonic jet impinging upon a cavity is studied to explain the resultant heating phenomenon. Flow visualization within the cavity shows a large central vortex dominating the flow pattern. Velocity measurements inside the cavity are made using a hot-wire anemometer. Temperature is measured with a copper-constantan thermocouple. The velocity field within the cavity is described by a modified Rankine combined vortex. An uncommon form of the energy equation is used to account for turbulent heating in adverse pressure gradients. A theoretical solution is developed to model the temperature field in the cavity. There is a good agreement between the calculated and measured temperatures. The heating effect is related to Ranque-Hilsch tubes.

  12. Life of a Tooth: A Visual Timeline

    Medline Plus

    Full Text Available ... Decay? Headaches and Jaw Pain? Check Your Posture! Men: Looking for a Better Job? Start by Visiting the Dentist Why is Oral Health Important for Men? What is a Composite Resin (White Filling)? Learn ...

  13. Founding a Foundation: A Mini Case Study.

    Science.gov (United States)

    Lake, Dale B.

    1981-01-01

    Lists factors contributing to the need for increased fund raising in community colleges. Discusses advantages of a foundation as a means of obtaining private funds. Delineates specifics of establishing, organizing, and implementing the Kalamazoo Valley Community College Foundation. (DMM)

  14. A Reinforced Blade for a Wind Turbine

    DEFF Research Database (Denmark)

    2010-01-01

    The present invention relates to a reinforced blade for a wind turbine having elongated reinforcing members in the blade extending substantially in the plane of the profile chord in order to strengthen the blade against edgewise and flapwise forces....

  15. A Novel Fortunate A from Cryptomerica fortunei

    Institute of Scientific and Technical Information of China (English)

    Zong Ping ZHENG; Li Hong HU; Jing Yu LIANG

    2005-01-01

    A novel compound, named fortunate A, was isolated from the ethanol extract of the stem bark of Cryptomerica fortunei. Its structure was established on the basis of the spectral evidences including 1D and 2D NMR spectrum.

  16. Broadcasting a message in a parallel computer

    Science.gov (United States)

    Berg, Jeremy E.; Faraj, Ahmad A.

    2011-08-02

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer. The parallel computer includes a plurality of compute nodes connected together using a data communications network. The data communications network optimized for point to point data communications and is characterized by at least two dimensions. The compute nodes are organized into at least one operational group of compute nodes for collective parallel operations of the parallel computer. One compute node of the operational group assigned to be a logical root. Broadcasting a message in a parallel computer includes: establishing a Hamiltonian path along all of the compute nodes in at least one plane of the data communications network and in the operational group; and broadcasting, by the logical root to the remaining compute nodes, the logical root's message along the established Hamiltonian path.

  17. A method for making a storage cell

    Energy Technology Data Exchange (ETDEWEB)

    Tanakhasi, K.; Ivaki, T.

    1983-03-17

    The electrode unit is placed in a tank and water is poured into it until the electrodes are completely submerged. A liquid is poured in from above which is a solution of a synthetic resin of the polyvinylchloride type in a solvent insoluble in water of the tetrahydrofurane type. The solvent spreads along the surface of the water. The resin is removed, hardening and forming a porous layer on the wave shaped coagulated flakes. Then the liquid is poured off, passing through the pores of the resin layer. The water is replaced by an electrolyte. The layer of resin prevent splashing and excess evaporation of the electrolyte. A plug with a catalyst for recombining the gases formed in the storage device may be installed additionally in the storage device.

  18. A method for making a dry element

    Energy Technology Data Exchange (ETDEWEB)

    Abe, T.; Isikhara, K.; Kimura, T.; Momose, K.; Sakata, Y.

    1983-08-11

    The agglomerate is coated along the lateral surface by a separator and is enclosed in a zinc cylinder which serves as the anode. A separating plate is installed in the upper part of the agglomerate between the agglomerate and the anode. A current outlead is attached to the anode. The element is inserted into a body, pressing the plate into the agglomerate with a punch which has a recess. A guide cylinder is used for precise installation of the element. The space between the plate and the body in the upper part of the element is filled with wax or another substance. Short circuiting (KZ) between the current outlead and the agglomerate is prevented in the element.

  19. A Burger, a Beer, and a Side of Science

    Science.gov (United States)

    Wiehe, B. R.; Landsberg, R. H.; Wyatt, R. J.; Turner, M. S.

    2008-11-01

    Science cafés (a.k.a. café scientifiques) engage unconventional adult audiences and help researchers hone their communication skills in a relaxed and fun setting. Typically held in restaurants and pubs, science cafés provide a comfortable place for the public to speak with a scientist. National and local evaluations of the café format indicate that café are an effective way to engage adult audiences (especially non-scientists). Continued media coverage also demonstrates that something about them captures the public's imagination. This paper is based on an interactive oral presentation about organizing, presenting, and partnering with science café to bring IYA themes (and other current research) directly to new audiences. Real world examples from experienced café organizers and presenters provide an overview of what a science café is, how to start one, and how to use the format to draw attention to astronomy topics. The discussion includes suggestions for tapping into the existing national and international community of cafés (there are more than 60 in the U.S. alone), and information about free outreach resources. Break-out exercises in the original oral presentation were designed to help prepare participants to: find a suitable venue, advertise, work with café speakers, and foster the inclusive conversation that is the hallmark of a science café. Participants also learned about the impacts that can be expected from a science café, including benefits to audiences, café presenters, and hosting organizations. The overall goal of the original oral presentation was to stimulate a discussion about strategies for facilitating face-to-face communication between scientists and lay audiences.

  20. Becoming a Vegetarian

    Science.gov (United States)

    ... A Week of Healthy Breakfasts Shyness Becoming a Vegetarian KidsHealth > For Teens > Becoming a Vegetarian A A ... en español Hacerse vegetariano Why Do People Become Vegetarians? For much of the world, vegetarianism is largely ...

  1. A Pile of Legos.

    Science.gov (United States)

    DePino, Andrew, Jr.

    1994-01-01

    Describes the relationships a high school built with neighborhood industry, a national laboratory, a national museum, and a large university while trying to build a scale model of the original atomic pile. Provides suggestions for teachers. (MVL)

  2. Aprendiendo a leer y a escuchar

    Directory of Open Access Journals (Sweden)

    Juan Carlos Rodríguez

    2010-12-01

    Full Text Available Cuando Discépolo llegó al tango, el tango estaba ya hecho.Había pasado de su época legendaria a su época mítica. El tango se había convertido en mito. Y el mito tiene un problema básico. Pierde su contacto con la realidad para transmutarse a sí mismo en la expresión de esa realidad.

  3. Transforming a foundation into a cooperative

    Directory of Open Access Journals (Sweden)

    Juan Ramón Manzano Malaxechevarría

    2013-12-01

    Full Text Available The author charts a path between entities that meet needs in the general interest such as foundations and others which are neither entities of general interest nor have purely mercantile legal personality such as cooperatives. Transforming a foundation into a cooperative calls for a broad interpretation of the principle of free will that the legislation wishes to foster.Received: 12.02.2013Accepted: 20.04.2013

  4. Ankylosing Spondylitis: a Reflection and a Question

    Directory of Open Access Journals (Sweden)

    Annia Deysi Hernández Martín

    2014-07-01

    Full Text Available Ankylosing spondylitis is a chronic inflammatory disease that affects the synovial membrane, joint entheses and para-articular structures of the spine, including the sacroiliac joints and limbs. We present a case of ankylosing spondylitis that had evolved for 12 years despite the relatively early diagnosis and treatment, showing flexion deformity and limitation of spinal movements. On radiological examination an early evolution to ankylosis was observed, which motivated us to make a reflection and a question.

  5. A Spinning Particle in a Mobius Strip

    CERN Document Server

    Nieto, J A

    2011-01-01

    We develop the classical and quantum theory of a spinning particle moving in a Mobius strip. We first propose a Lagrangian for such a system and then we proceed to quantize the system via the constraint Hamiltonian system formalism. Our results may be of particular interest in several physical scenarios, including solid state physics and optics. In fact, the present work may shed some new light on the recent discoveries on condensed matter concerning topological insulators.

  6. Finding a Forest in a Tree

    DEFF Research Database (Denmark)

    Bacci, Giorgio; Miculan, Marino; Rizzi, Romeo

    2014-01-01

    computations, because they allow one to connect processes which can be at different places in the system, possibly crossing boundaries and firewalls. For instances, remote procedure calls can be modeled as a process in place i activating a reaction in a different place j; code mobility can be modeled...

  7. A Model Technology Educator: Thomas A. Edison

    Science.gov (United States)

    Pretzer, William S.; Rogers, George E.; Bush, Jeffery

    2007-01-01

    Reflecting back over a century ago to the small village of Menlo Park, New Jersey provides insight into a remarkable visionary and an exceptional role model for today's problem-solving and design-focused technology educator: Thomas A. Edison, inventor, innovator, and model technology educator. Since Edison could not simply apply existing knowledge…

  8. A minimal model of a tidewater glacier

    NARCIS (Netherlands)

    Oerlemans, J.; Nick, Faezeh Maghami

    2005-01-01

    We propose a simple, highly parameterized model of a tidewater glacier. The mean ice thickness and the ice thickness at the glacier front are parameterized in terms of glacier length and, when the glacier is calving, water depth. We use a linear relation between calving rate and water depth. The cha

  9. SecA, a remarkable nanomachine

    NARCIS (Netherlands)

    Kusters, Ilja; Driessen, Arnold J. M.

    2011-01-01

    Biological cells harbor a variety of molecular machines that carry out mechanical work at the nanoscale. One of these nanomachines is the bacterial motor protein SecA which translocates secretory proteins through the protein-conducting membrane channel SecYEG. SecA converts chemically stored energy

  10. A Method of Operating a Fuel Cell

    DEFF Research Database (Denmark)

    2013-01-01

    The present invention relates to a method of determining the net water drag coefficient (rd) in a fuel cell. By measuring the velocity of the fluid stream at the outlet of the anode, rd can be determined. Real time monitoring and adjustments of the water balance of a fuel cell may be therefore...

  11. Stabilizing a Bicycle: A Modeling Project

    Science.gov (United States)

    Pennings, Timothy J.; Williams, Blair R.

    2010-01-01

    This article is a project that takes students through the process of forming a mathematical model of bicycle dynamics. Beginning with basic ideas from Newtonian mechanics (forces and torques), students use techniques from calculus and differential equations to develop the equations of rotational motion for a bicycle-rider system as it tips from…

  12. What a Time to Be a Bunny

    Institute of Scientific and Technical Information of China (English)

    NATHAN; BEARDSLEY

    2011-01-01

    It is the dead of the night and the city is sleeping. A stray car cruises the street until its lonesome passenger responds in a zombie-like manner to a traffic light that turns red, stopping an invisible flow of traffic.

  13. When a regulation becomes a learning process

    DEFF Research Database (Denmark)

    Nunez, Heilyn Camacho; Cespedes, Paula

    Adoption and effective use of information and communication technology (ICT) becomes a need for organizations of any size and type, however, ICT adoption is still a challenge for organizations, its implementation must be a strategic decision that involves design, delivery and use of software syst...

  14. A Lonely Heart Could Worsen a Cold

    Science.gov (United States)

    ... page: https://medlineplus.gov/news/fullstory_164381.html A Lonely Heart Could Worsen a Cold People who feel isolated tend to have ... 30, 2017 THURSDAY, March 30, 2017 (HealthDay News) -- A cold is never fun, but it's even more ...

  15. A microfluidic device with a diffusion barrier

    DEFF Research Database (Denmark)

    2014-01-01

    The invention provides a microfiuidic device for macromoiecuie amplification by sequential addition of liquid reagents. The device of the invention comprises a chip forming a plurality of reaction chambers each extending between an inlet and an outlet, each inlet being in fluid communication with...

  16. Sustainable Competence: A Study of a Bank

    Science.gov (United States)

    Hagstrom, Tom; Backstrom, Tomas; Goransson, Susanna

    2009-01-01

    Purpose: Decentralization and company cultures have emerged to master increasing external flexibility, as in a competitive bank in Sweden, raising issues of the sustainability in terms of competence and competence development. The purpose of this paper is to study how the staff members in a bank perceive a company culture and how this perception…

  17. A modified total synthesis of cystothiazole A

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    A modified total synthesis of cystothiazole A is described. In this synthetic strategy, a one-step transformation of acylated oxazolidinone to β-ketoester has been successfully applied, thus making the synthetic route more efficient. This method may also be potentially applied in synthesis of other related β-substituted-β-methoxyl acrylates (bb-MOAs).

  18. A modified total synthesis of cystothiazole A

    Institute of Scientific and Technical Information of China (English)

    BAI YueXia; BAO JiLai; REN Jun; WANG ZhongWen

    2009-01-01

    A modified total synthesis of cystothiazole A is described.In this synthetic strategy,a one-step transformation of acylated oxazolidinone to β-ketoester has been successfully applied,thus making the synthetic route more efficient.This method may also be potentially applied in synthesis of other related β-substituted-β-methoxyl acrylates (bb-MOAs).

  19. A device for reforming a hydrocarbon fuel

    Energy Technology Data Exchange (ETDEWEB)

    Kendzi, T.; Ikuo, M.

    1984-03-15

    In order to utilize the heat from the reaction of reforming of a hydrocarbon fuel and the heat scattered from a heater, a design is proposed for a fuel reforming reactor in which the gases entering the reactor first pass inside the reactor along the external wall and are heated by the heat dispersed inside the reactor. Then they go in the opposite direction along a clearance between the interior shell of the reactor and the internal body of the reactor itself with a catalyst (Kt) and a heated electrical cylindrical heater. Then the gases, already heated, go directly into the cavity of the reactor filled with the catalyst where the reforming reaction occurs and then the gases and the vapors of the reformed fuel are discharged, passing through a system of heat exchangers. The layout of such a reactor, which contains a cylindrical shell inside, a cylindrical sleeve coaxial with it and the body of the reactor itself with the heater, is given. A system for attaching the internal sleeve and the body of the reactor to the catalyst is cited. The course of the gases inside the reactor is also given.

  20. A lattice for a lead storage battery

    Energy Technology Data Exchange (ETDEWEB)

    Fukuda, S.; Fukunaga, K.; Kumano, Y.

    1983-07-13

    Lattices for a lead storage cell are made of a lead alloy which contains (in percent by mass): 0.05 to 0.3 strontium; 0.02 to 0.1 aluminum; 0.05 to 3.0 tin and 0.01 to 3.0 cadmium. The storage cell has low autodischarge and a long service life.

  1. Teratogenia da vitamina A Vitamin A teratogenicity

    Directory of Open Access Journals (Sweden)

    Maria Helena de Castro Chagas

    2003-09-01

    Full Text Available A vitamina A é essencial à preservação e ao funcionamento normal dos tecidos, assim como, ao crescimento e desenvolvimento. No humano há evidência indireta que a vitamina A em excesso, durante as primeiras semanas de gestação é teratogênica. Do contrário, não há dúvidas sobre os efeitos deletérios, de uma alimentação carente neste micronutriente e sobre a disponibilidade do conhecimento técnico para evitá-los. A preocupação com o fato de que a vitamina A conduziria a teratogenia em humanos, tem retardado a implementação de programas de combate a carência de vitamina A, atingindo principalmente os programas de enriquecimento de alimentos. A literatura é controvertida e dispõe de poucas informações sobre as doses para suplementação de gestantes. Como o retinol circulante materno é controlado homeostaticamente após o consumo de alimentos fonte de vitamina A, espera-se a mesma resposta metabólica após o consumo de alimentos fortificados, indicando que não há risco de teratogenia. Consequentemente, parece altamente improvável que o consumo de alimentos enriquecidos ou de suplementos de vitamina A pré-formada, nas doses unitárias habituais, tenha efeito teratogênico no homem.The vitamin A is essential to the preservation and the normal functioning of tissues, as well as, to the growth and development. In the human being it has indirect evidence that the vitamin A in excess, during the first weeks of gestation is teratogenic. Of the opposite, it does not have doubts on the deleterious effect, of a devoid feeding in this micronutrient and on the availability of the knowledge technician to prevent them. The concern with the fact of that the vitamin A would lead it the teratogenicity in human beings, has delayed the implementation of combat programs the vitamin A lack, mainly reaching the programs of food enrichment. Literature is controverted and makes use of few information on the doses for supplementation of

  2. A Psychological Factor Affecting a Cardiac Condition in a Psychotherapist

    Directory of Open Access Journals (Sweden)

    R Waxman

    2009-03-01

    Full Text Available It has been established that intense emotions can affect the development and course of cardiac arrhythmias. This study sought to convey that a lack of expression of emotion can also have an effect on arrhythmias. A psychotherapist with Idiopathic Ventricular Fibrillation and an Implantable Cardioverter Defibrillator measured his rate of Premature Ventricular Contractions using a Holter monitor during three separate six-week periods and in three domains: A work days vs. off days, B a 27 hour work week vs. 22 hour work week, and C in 5 different modalities including 1 Meeting with department head 2 Individual psychotherapy with patients 3 Group therapy with patients 4 Supervision of residents 5 Personal psychoanalysis. The results showed more than a 3-fold increase of arrhythmogenic activity during the 27-hour work week vs. 22 and a 5-fold increase in arrhythmogenic activity on work days compared to days off. Department Head meetings were found to be most arrhythmogenic and personal psychoanalysis was least. The data suggest that the psychiatrist’s lack of emotional expression in his clinical work has been demonstrated to markedly worsen his arrhythmia. The results also point to the potential ameliorating effects of the therapist’s own psychotherapy.

  3. A PURCHASING DECISION: SELECTING A SUPPLIER FOR A CONSTRUCTION COMPANY

    Institute of Scientific and Technical Information of China (English)

    Ozden BAYAZIT; Birsen KARPAK; Ayhan YAGCI

    2006-01-01

    Supplier selection is one of the most crucial activities performed by organizations because of its strategic importance. Supplier selection is a multi-objective problem involving both quantitative and qualitative criteria. Over the years a number of quantitative approaches have been tried. Although the Analytic Hierarchy Process (AHP) has previously been used in supplier selection problems, one major weakness of the application-oriented AHP literature is that it tends to focus on the mechanics of AHP instead of on the theoretical and practical implications associated with finding a solution. Though it is one of the most extensively used Multiple Criteria Decision Analysis methodologies, our literature search indicated that most studies found the best solution and stopped there, ignoring sensitivity analysis. Performing sensitivity analysis is very important for practical decision making, sometimes even as important as finding the best solution. In this paper for the first time a comprehensive application of AHP for a real-world case is presented along with sensitivity analysis in choosing the best suppliers for a Turkish construction company. As a result of this study the company decided to allocate the order quantities between the two top suppliers.

  4. A diferença e a alteridade

    Directory of Open Access Journals (Sweden)

    Eurídice Figueiredo

    2007-12-01

    Full Text Available Este texto se propõe a discutir o pensamento diferencialista da crítica e da literatura norte-americanas presente no tratamento da alteridade em relação às representações dos mestiços e a mostrar que ele é diferente da lógica universalista brasileira. Muito se falou da ideologia do branqueamento no Brasil, que possibilita a passagem de uma cor/raça a outra, considerada superior. Este fenômeno, chamado de passing em inglês, em que os mulatos/mestiços claros podem ocultar sua origem, mudar de região e se fazer passar por brancos, também existe na América do Norte. Este tema – que aparece em vários romances – é altamente problemático nos dias de hoje, em que as minorias são instadas, pelo pensamento politicamente correto, a se assumir e lutar pelo direito à diferença. Esta visão nega ao personagem do mestiço-quase-branco o direito à singularidade e à construção de uma identidade individual(ista, já que ele deve se inserir sempre no âmbito de uma luta coletiva.

  5. Eurasian Union: A Utopia, a Dream or a Coming Reality?

    Directory of Open Access Journals (Sweden)

    Tuğçe Varol SEVIM

    2013-11-01

    Full Text Available Twenty years passed after the dissolution of the USSR and the re-birth of Russian Federation and Central Asian states in the world arena in such a unipolar world. Since the rise of Vladimir Putin to power Russia resists on unipolar system and sees that as a treat to its security. Hence, Kremlin perceives that the economic strength is the sine qua non for the future of Russia in order to sustain a Big Power status not only in its region but also in the world. In 2011, Russia, Belarus and Kazakhstan have achieved to form a Customs Union among them and invited all the states in the region to join the organization. There were thesis which mainly argued that Russia would no longer be a “power” in the Central Asia and could only be a regional power just in case of maintaining of its own unity. However, the circumstances have changed in the region accordingly Russian weight as a result of the new conjuncture. In 2012, Russia had a new presidential election and Putin returned to Kremlin as President himself. It has been understood from his words that Kremlin's new strategy to be focused on creating a Eurasian Union including Kyrgyzstan and Tajikistan at the first stage. It is aimed to analyze in this study that whether this project could be successful and if so, what could be the impacts on world order in terms of competition between Russia, the United States and China also. And finally, what could be the result of such an organization for the Russia.

  6. A study of a simple gyrotron equation

    Energy Technology Data Exchange (ETDEWEB)

    Goetz, Markus [Max-Planck-Institut fuer Plasmaphysik, EURATOM-Association, D-85748 Garching (Germany); Meyer-Spasche, Rita [Max-Planck-Institut fuer Plasmaphysik, EURATOM-Association, D-85748 Garching (Germany); Weitzner, Harold [New York University, Courant Institute of Mathematical Sciences, New York, NY 10012 (United States)

    2007-03-02

    A simple standard equation for the evolution of the electrons and electromagnetic fields in a gyrotron cavity is studied. A number of mathematical properties are shown: existence and uniqueness of solutions for a limited axial extent and existence and uniqueness for all axial lengths in one case of particular interest. A Poynting theorem is obtained directly from the model and the Hamiltonian character of the electron motion is demonstrated. The start-up and final state in the gyrotron cavity are also examined. The efficiency of energy flux transfer from the electron beam to the wave is estimated.

  7. Homenagem a Ecléa Bosi

    Directory of Open Access Journals (Sweden)

    Marilena Chauí

    2008-03-01

    Full Text Available Neste ensaio, buscamos a principal contribuição de Ecléa Bosi para a Psicologia Social, qual seja, a relação entre teoria, método e técnicas de pesquisa e militância social, política e cultural, a partir da definição da psicologia como fenomenologia dos atos expressivos e da relação de amizade entre o pesquisador e o pesquisado como pessoa.

  8. A child with a large bladder stone: A case report

    Directory of Open Access Journals (Sweden)

    Hulya Ozturk

    2014-07-01

    Full Text Available Bladder stones account for approximately 5% of all urinary system stones and are prevalent among children living in poor or rural regions. The symptoms and findings in children with bladder stones are usually urgency, frequency, incontinence, dysuria, pyuria, difficulty voiding, and fever, small caliber of urinary stream, lower abdominal pain and urinary intermittency. Most bladder stones are composed of calcium oxalate, followed by calcium phosphate, and they are usually larger than 2.5 cm in diameter. We present a case of a larger-than 2.5-cm bladder stone in a child.

  9. A Spectrum is Worth a Thousand Pictures

    Science.gov (United States)

    Gelderman, Richard F.

    2006-12-01

    A wise astronomer once pointed out that if a picture is worth a thousand words, then a spectrum is worth a thousand pictures. Unfortunately, spectra are rarely emphasized in the introductory astronomy courses and few students exit such a course with any meaningful understanding or appreciation of spectroscopy. Part of the problem is lack of background knowledge; the typical introductory astronomy student has little experience with spectroscopy or atomic physics. Another issue is that spectra are not pretty pictures and are not intuitively understandable. We present and discuss a series of “minds-on” exercises and activities built into a college-level “stars, galaxies, and cosmology” intro astronomy course. The lessons are structured to help students improve their ability to recognize patterns and improve their ability to really see the details in front of them. Another goal is for students to realize there is “more than meets the eye” to learn how to discover “hidden” diagnostics, such as different sources of light their eyes see as white light. A curriculum that emphasizes spectroscopy also provides the opportunity to stress the story of the “Harvard Women,” a tale that bridges gender gaps and often humanizes scientists in the eyes of non-science majors. Finally, with a solid foundation in spectroscopy, students are better prepared to understand exciting topics such as Hubble’s Law and the importance of primordial nucleosynthesis.

  10. A case of a horseshoe appendix.

    Science.gov (United States)

    Takabatake, Kazuya; Ikeda, Jun; Furuke, Hirotaka; Kato, Chikage; Kishimoto, Takuya; Kumano, Tatsuya; Imura, Kenichiro; Shimomura, Katsumi; Kubota, Takeshi; Taniguchi, Fumihiro; Shioaki, Yasuhiro

    2016-12-01

    Anomalies of the appendix are extremely rare, and a horseshoe appendix is even rarer. A literature search has revealed only five reported cases. In this report, we present a case of a horseshoe appendix.A 78-year-old man was referred for further examination following a positive fecal occult blood test. A mass in his ascending colon was detected on colonoscopy, while computed tomography showed that it was connected to the appendix. Tumor invasion derived from the ascending colon or appendix was suspected. We diagnosed ascending colon cancer prior to laparoscopic ileocecal resection. Macroscopic findings showed that the appendix connected to the back side of the mass, while microscopic findings showed that the mucosa and submucosa were continuous from the appendiceal orifice in the cecum to the other orifice in the ascending colon, where a type 1 tumor was observed on the orifice. We eventually diagnosed the patient with tubulovillous adenoma and a horseshoe appendix.A horseshoe appendix communicates with the colon at both ends and is supplied by a single fan-shaped mesentery. Cases are classified by the disposal of the mesentery and the location of the orifice. Anatomical anomalies should be considered despite the rarity of horseshoe appendices.

  11. A Random Laser as a Dynamical Network

    CERN Document Server

    Höfner, M; Henneberger, F

    2013-01-01

    The mode dynamics of a random laser is investigated in experiment and theory. The laser consists of a ZnCdO/ZnO multiple quantum well with air-holes that provide the necessary feedback. Time-resolved measurements reveal multimode spectra with individually developing features but no variation from shot to shot. These findings are qualitatively reproduced with a model that exploits the specifics of a dilute system of weak scatterers and can be interpreted in terms of a lasing network. Introducing the phase-sensitive node coherence reveals new aspects of the self-organization of the laser field. Lasing is carried by connected links between a subset of scatterers, the fields on which are oscillating coherently in phase. In addition, perturbing feedback with possibly unfitting phases from frustrated other scatterers is suppressed by destructive superposition. We believe that our findings are representative at least for weakly scattering random lasers. A generalization to random laser with dense and strong scattere...

  12. A marketing strategy for a nursing college

    Directory of Open Access Journals (Sweden)

    M. Pryde

    1995-05-01

    Full Text Available The objective of this study is to explore and describe a marketing strategy for a nursing college. An explorative and descriptive research design, within the context of a nursing college and affiliated hospitals, was followed. A literature study of marketing models was undertaken and the Delphi-method was utilised to determine the contribution of marketing staff and the possible content of a marketing strategy for a nursing college. The results were utilised to describe guidelines for such a strategy, consisting of marketers/marketing agents, target market, product, price, promotional activities, place and market research. Recommendations include the planning, implementation and evaluation of strategy, inservice training for potential marketing agents, inclusion of marketing as part of the formal education of tutors and nurse managers,as well as an impact study of the scholar as the main consumer.

  13. A marketing strategy for a nursing college.

    Science.gov (United States)

    Pryde, M; Muller, M

    1995-08-01

    The objective of this study is to explore and describe a marketing strategy for a nursing college. An explorative and descriptive research design, within the context of a nursing college and affiliated hospitals, was followed. A literature study of marketing models was undertaken and the Delphi-method was utilised to determine the contribution of marketing staff and the possible content of a marketing strategy for a nursing college. The results were utilised to describe guidelines for such a strategy, consisting of marketers/marketing agents, target market, product, price, promotional activities, place and market research. Recommendations include the planning, implementation and evaluation of strategy, inservice training for potential marketing agents, inclusion of marketing as part of the formal education of tutors and nurse managers, as well as an impact study of the scholar as the main consumer.

  14. SUPERNOVA 1987A: CELEBRATING A SILVER JUBILEE

    Directory of Open Access Journals (Sweden)

    Nino Panagia

    2013-12-01

    Full Text Available The story of the SN 1987A explosion is briefly reviewed. Although this supernova was somewhat peculiar, the study of SN 1987A has clarified quite a number of important aspects of the nature and the properties of supernovae, such as the confirmation of the core collapse of a massive star as the cause of the explosion, as well the confirmation that the decays 56Ni–56Co–56Fe at early times and 44Ti–44Sc at late times, are the main sources of the energy radiated by the ejecta. Still we have not been able to ascertain whether the progenitor was a single star or a binary system, nor have we been able to detect the stellar remnant, a neutron star that should be produced in the core collapse process.

  15. A reductive coupling strategy towards ripostatin A.

    Science.gov (United States)

    Schleicher, Kristin D; Jamison, Timothy F

    2013-01-01

    Synthetic studies on the antibiotic natural product ripostatin A have been carried out with the aim to construct the C9-C10 bond by a nickel(0)-catalyzed coupling reaction of an enyne and an epoxide, followed by rearrangement of the resulting dienylcyclopropane intermediate to afford the skipped 1,4,7-triene. A cyclopropyl enyne fragment corresponding to C1-C9 has been synthesized in high yield and demonstrated to be a competent substrate for the nickel(0)-catalyzed coupling with a model epoxide. Several synthetic approaches toward the C10-C26 epoxide have been pursued. The C13 stereocenter can be set by allylation and reductive decyanation of a cyanohydrin acetonide. A mild, fluoride-promoted decarboxylation enables construction of the C15-C16 bond by an aldol reaction. The product of this transformation is of the correct oxidation state and potentially three steps removed from the targeted epoxide fragment.

  16. A Project Team: A Team or Just a Group?

    Directory of Open Access Journals (Sweden)

    Katerina Hrazdilova Bockova

    2013-11-01

    Full Text Available This paper deals with issues related to work in either teams or groups. The theoretical part which discusses a team and a group with regards to its definition, classification and basic distinction brings in more on the typology of team roles, personality assessment and sociometric methods. The analytical part tests the project (work team of a medical center represented in terms of personality and motivational types, team roles and interpersonal team relations concerning the willingness of cooperation and communication. The main objective of this work was to determine whether the existing team is not by its nature rather a working group that contributes to the generally perceived stagnation of that field.

  17. A coinsidence, a chance or a misfortune? Hangman's fracture.

    Science.gov (United States)

    Dalbayrak, Sedat; Yaman, Onur

    2014-01-01

    William R. Francis and Bassam El-Effendi shared a common ground: they were the first individuals to classify Hangman's Fractures. Interestingly, although they were unaware of each other, they classified and published their findings in the same year, published in the same edition of the same journal (but on different pages). This new classification system was a chance for notoriety for El-Effendi, yet it was a misfortune for Francis. Both physicians graduated in 1973 (from different universities). Also fellows at different universities in 1981, they were also both unaware they studied the same topic. Coincidentally, their paths crossed in the same edition of a journal where their studies were published in the same year, which was unprecedented in the literature. One classification scheme is well-known while the other is almost completely unheard of for no apparent reason other than chance for one and misfortune for the other.

  18. When is a theory a theory? A case example.

    Science.gov (United States)

    Alkin, Marvin C

    2016-10-15

    This discussion comments on the approximately 20years history of writings on the prescriptive theory called Empowerment Evaluation. To do so, involves examining how "Empowerment Evaluation Theory" has been defined at various points of time (particularly 1996 and now in 2015). Defining a theory is different from judging the success of a theory. This latter topic has been addressed elsewhere by Michael Scriven, Michael Patton, and Brad Cousins. I am initially guided by the work of Robin Miller (2010) who has written on the issue of how to judge the success of a theory. In doing so, she provided potential standards for judging the adequacy of theories. My task is not judging the adequacy or success of the Empowerment Evaluation prescriptive theory in practice, but determining how well the theory is delineated. That is, to what extent do the writings qualify as a prescriptive theory.

  19. Haemorrhage in a scrotal lymphangioma in a child: A rarity

    Directory of Open Access Journals (Sweden)

    Rattan Kamal

    2009-01-01

    Full Text Available We report here a case of cystic lymphangioma of scrotum presenting as acute scrotum due to haemorrhage. The diagnosis was confirmed on ultrasonography and magnetic resonance imaging and managed successfully by surgical excision. There was past history of bilateral congenital cataract for which the patient had undergone surgery with complete visual recovery. Scrotal cystic lymphangioma complicated by haemorrhage is rare; hence, the case is being reported with a review of literature.

  20. IgA Nephropathy

    Science.gov (United States)

    ... reliable ways to diagnose IgA nephropathy; therefore, the diagnosis of IgA nephropathy requires a kidney biopsy. A kidney biopsy is ... reliable ways to diagnose IgA nephropathy; therefore, the diagnosis of IgA nephropathy requires a kidney biopsy. Researchers have not yet ...

  1. Tricolorin A as a Natural Herbicide

    Directory of Open Access Journals (Sweden)

    Blas Lotina-Hennsen

    2013-01-01

    Full Text Available Tricolorin A acts as pre- and post-emergence plant growth inhibitor. In pre-emergence it displays broad-spectrum weed control, inhibiting germination of both monocotyledonous (Lolium mutliflorum and Triticum vulgare and dicotyledonous (Physalis ixocarpa and Trifolium alexandrinum seeds, being the dicotyledonous seeds the most inhibited. Tricolorin A also inhibited seedling growth, and seed respiration, and since the concentrations required for inhibiting both germination and respiration were similar, we suggest that respiration is one of its targets. Tricolorin A at 60 µM acts as a post- emergence plant growth inhibitor by reducing dry plant biomass by 62%, 37%, 33%, and 22% for L. multiflorum, T. alexandrinum, T. vulgare, and P. ixocarpa, respectively, 18 days after its application. In order to determine the potency of tricolorin A as a plant growth inhibitor, paraquat was used as control; the results indicate that tricolorin A acts as a non-selective post-emergence plant growth inhibitor similar to paraquat, since both reduced the biomass production in P. ixocarpa and T. alexandrinum. Therefore, we suggest that tricolorin A will be a good biodegradable herbicide for weeds.

  2. A system architecture for a planetary rover

    Science.gov (United States)

    Smith, D. B.; Matijevic, J. R.

    1989-01-01

    Each planetary mission requires a complex space vehicle which integrates several functions to accomplish the mission and science objectives. A Mars Rover is one of these vehicles, and extends the normal spacecraft functionality with two additional functions: surface mobility and sample acquisition. All functions are assembled into a hierarchical and structured format to understand the complexities of interactions between functions during different mission times. It can graphically show data flow between functions, and most importantly, the necessary control flow to avoid unambiguous results. Diagrams are presented organizing the functions into a structured, block format where each block represents a major function at the system level. As such, there are six blocks representing telecomm, power, thermal, science, mobility and sampling under a supervisory block called Data Management/Executive. Each block is a simple collection of state machines arranged into a hierarchical order very close to the NASREM model for Telerobotics. Each layer within a block represents a level of control for a set of state machines that do the three primary interface functions: command, telemetry, and fault protection. This latter function is expanded to include automatic reactions to the environment as well as internal faults. Lastly, diagrams are presented that trace the system operations involved in moving from site to site after site selection. The diagrams clearly illustrate both the data and control flows. They also illustrate inter-block data transfers and a hierarchical approach to fault protection. This systems architecture can be used to determine functional requirements, interface specifications and be used as a mechanism for grouping subsystems (i.e., collecting groups of machines, or blocks consistent with good and testable implementations).

  3. When is a bottleneck a bottleneck?

    CERN Document Server

    Schadschneider, Andreas; Popkov, Vladislav

    2015-01-01

    Bottlenecks, i.e. local reductions of capacity, are one of the most relevant scenarios of traffic systems. The asymmetric simple exclusion process (ASEP) with a defect is a minimal model for such a bottleneck scenario. One crucial question is "What is the critical strength of the defect that is required to create global effects, i.e. traffic jams localized at the defect position". Intuitively one would expect that already an arbitrarily small bottleneck strength leads to global effects in the system, e.g. a reduction of the maximal current. Therefore it came as a surprise when, based on computer simulations, it was claimed that the reaction of the system depends in non-continuous way on the defect strength and weak defects do not have a global influence on the system. Here we reconcile intuition and simulations by showing that indeed the critical defect strength is zero. We discuss the implications for the analysis of empirical and numerical data.

  4. GRB 130427A: a Nearby Ordinary Monster

    CERN Document Server

    Maselli, A; Nava, L; Mundell, C G; Kawai, N; Campana, S; Covino, S; Cummings, J R; Cusumano, G; Evans, P A; Ghirlanda, G; Ghisellini, G; Guidorzi, C; Kobayashi, S; Kuin, P; La Parola, V; Mangano, V; Oates, S; Sakamoto, T; Serino, M; Virgili, F; Zhang, B -B; Barthelmy, S; Beardmore, A; Bernardini, M G; Bersier, D; Burrows, D; Calderone, G; Capalbi, M; Chiang, J; D'Avanzo, P; D'Elia, V; De Pasquale, M; Fugazza, D; Gehrels, N; Gomboc, A; Harrison, R; Hanayama, H; Japelj, J; Kennea, J; Kopac, D; Kouveliotou, C; Kuroda, D; Levan, A; Malesani, D; Marshall, F; Nousek, J; O'Brien, P; Osborne, J P; Pagani, C; Page, K L; Page, M; Perri, M; Pritchard, T; Romano, P; Saito, Y; Sbarufatti, B; Salvaterra, R; Steele, I; Tanvir, N; Vianello, G; Weigand, B; Wiersema, K; Yatsu, Y; Yoshii, T; Tagliaferri, G

    2014-01-01

    Long-duration Gamma-Ray Bursts (GRBs) are an extremely rare outcome of the collapse of massive stars, and are typically found in the distant Universe. Because of its intrinsic luminosity ($L\\sim 3 \\times 10^{53}$ erg s$^{-1}$) and its relative proximity ($z=0.34$), GRB 130427A was a unique event that reached the highest fluence observed in the gamma-ray band. Here we present a comprehensive multiwavelength view of GRB 130427A with Swift, the 2-m Liverpool and Faulkes telescopes and by other ground-based facilities, highlighting the evolution of the burst emission from the prompt to the afterglow phase. The properties of GRB 130427A are similar to those of the most luminous, high-redshift GRBs, suggesting that a common central engine is responsible for producing GRBs in both the contemporary and the early Universe and over the full range of GRB isotropic energies.

  5. A Wonderful Adventure to a Rainforest

    Institute of Scientific and Technical Information of China (English)

    楼雯雯

    2005-01-01

    I’d like to go to a rainforest—the place I’ve alw ays dream t of going to. D uring m y long holiday in M ay, it m ay take a w eek to be on m y adventure. A nd I think it’ll be a really fantastic journey as there m ust be a va- riety of creatures along m y w ay. W henever I get tired and bored,they’ll cheer m e up.D if- ferent creatures m ake m e excited. A nd the m ore dangerous m y journey is, the m ore curi- ous I w ill be. I m ay get to m y destination by air, but in order to enjoy m y journey to the ful...

  6. Death ends a life not a relationship

    DEFF Research Database (Denmark)

    Christensen, Dorthe Refslund; Sandvik, Kjetil

    2015-01-01

    When parents are expecting, the child is usually awaited with hope and plans and reflections on how to share the life and future with this new child. As such the child opens the parents' perspective to a new future, a span of time or potentiality, a certain narrative—that is, being parents, raising...... a child. When a child is stillborn or dies at a very young age, this event not only turns off all hopes for this particular child, but also all good things envisioned for the child and his or her family, the world itself changes radically. At the Danish website Mindet.dk, parents engage in ritualizations...... through which they resituate themselves in the world through performing their grief and loss, re-relating themselves to others and renewing their acquaintance with themselves and the world. These ritualizations are carried out through narratives and performances dealing with different aspects of the loss...

  7. A tunable DNA spring in a nanochannel

    Science.gov (United States)

    Riehn, Robert; Staunton, Rory; Lim, Shuang Fang; Bruinsma, Robijn; Reisner, Walter; Austin, Robert

    2007-03-01

    dsDNA becomes linearized when it is confined to nanofluidic channels with a cross-section of (100 nm)^2 or less, which has made them interesting for genomic DNA analyses. DNA is typically manipulated by means of electric fields. We have found that DNA undergoes a phase transition to a condensed state if an a.c. electric field is applied along the channel direction. The molecule collapses to about 1/4 of it's initial contour length. We will discuss how the effect depends on parameters such as frequency, field strength, channel dimensions, and will discuss the origin of the effect. Interestingly, DNA behaves like an artifical muscle that can be triggered by an a.c. electric field. Since the interaction is expected to hold for any solubilized polyelectrolyte, we speculate that the mechanism may lead to a new class of polymer-based mechanical actuators. These would not suffer from depolarization like piezo transducers.

  8. A água e a vida

    Directory of Open Access Journals (Sweden)

    JOSÉ CARLOS BRUNI

    1993-12-01

    Full Text Available Trata-se de exercício de interpretação da frase “tudo é água”, atribuída a Tales de Mileto. Depois da exposição dos pontos de vista do senso comum, da ciência e da filosofia sobre a utilidade da água para a vida, tenta-se recuperar, na dimensão simbólica, suas significações mais profundas como fonte, purificação e regeneração da vida humana. O artigo sugere que a poluição das águas pela moderna sociedade industrial agride brutalmente não só a vida biológica como também a vida psíquica.

  9. Starting a business through a franchise

    Directory of Open Access Journals (Sweden)

    Dubravka Mahaček

    2013-12-01

    Full Text Available A business can be launched by establishing a new entity, purchasing an existing entity or through a franc - hise. There are certain prerequisites for starting a business, the most important ones being a quality idea and start-up capital. Potential start-up difficulties are inadequate financing, existing competition as well as the process of building your own market position. By purchasing an existing business some risks may be avoided and the opportunity for gaining profit may arise. Profitable operation is possible only if this business has up-to-date products and no outstanding liabilities. This paper discusses franchising business opportunities and the requisite investments and costs, which will bring success if they are accompanied by franchisee’s efforts. The paper aims to present the main characteristics of a franchise business, the necessary investment and the costs which arise in the process, as well as advantages, disadvantages and experiences with this kind of business

  10. Stretching a Semiflexible Polymer in a Tube

    Directory of Open Access Journals (Sweden)

    Runhua Li

    2016-09-01

    Full Text Available How the statistical behavior of semiflexible polymer chains may be affected by force stretching and tube confinement is a classical unsolved problem in polymer physics. Based on the Odijk deflection theory and normal mode decomposition in terms of Fourier expansion, we have derived a new compact formula for the extension of a wormlike chain of finite length strongly confined in a tube and simultaneously stretched by an external force. We have also suggested a new deflection length, which together with the force-extension relation is valid for a very extended range of the tube-diameter/persistence-length ratio comparing to the classic Odijk theory. The newly derived formula has no adjustable fitting parameters for the whole deflection regime; in contrast, the classic Odijk length needs different prefactors to fit the free energy and average extension, respectively. Brownian dynamics simulations based on the Generalized Bead-Rod (GBR model were extensively performed, which justified the theoretical predictions.

  11. A Small Deformation of a Simple Theory

    CERN Document Server

    Buican, Matthew

    2016-01-01

    We study an interesting relevant deformation of the simplest interacting N=2 SCFT---the original Argyres-Douglas (AD) theory. We argue that, although this deformation is not strictly speaking Banks-Zaks like (certain operator dimensions change macroscopically), there are senses in which it constitutes a mild deformation of the parent AD theory: the exact change in the "a" anomaly is small and is essentially saturated at one loop. Moreover, contributions from IR operators that have a simple description in the UV theory reproduce a particular limit of the IR index to a remarkably high order. These results lead us to conclude that the IR theory is an N=1 SCFT with the smallest-known "a" and "c" central charges for an interacting SCFT in four dimensions.

  12. Broadcasting a message in a parallel computer

    Energy Technology Data Exchange (ETDEWEB)

    Archer, Charles J; Faraj, Daniel A

    2014-11-18

    Methods, systems, and products are disclosed for broadcasting a message in a parallel computer that includes: transmitting, by the logical root to all of the nodes directly connected to the logical root, a message; and for each node except the logical root: receiving the message; if that node is the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received; if that node received the message from a parent node and if that node is not a leaf node, then transmitting the message to all of the child nodes; and if that node received the message from a child node and if that node is not the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received and transmitting the message to the parent node.

  13. Locating a circle on a sphere

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2003-01-01

    We consider the problem of locating a spherical circle with respect to existing facilities on a sphere, such that the sum of weighted distances between the circle and the facilities is minimized, or such that the maximum weighted distance is minimized. The problem properties are analyzed, and we...... give solution procedures. When the circle to be located is restricted to be a great circle, some simplifications are possible....

  14. A numerical simulation of a contrail

    Energy Technology Data Exchange (ETDEWEB)

    Levkov, L.; Boin, M.; Meinert, D. [GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht (Germany)

    1997-12-31

    The formation of a contrail from an aircraft flying near the tropopause is simulated using a three-dimensional mesoscale atmospheric model including a very complex scheme of parameterized cloud microphysical processes. The model predicted ice concentrations are in very good agreement with data measured during the International Cirrus Experiment (ICE), 1989. Sensitivity simulations were run to determine humidity forcing on the life time of contrails. (author) 4 refs.

  15. [Pneumomediastinum during a dermatomyositis: a rare entity].

    Science.gov (United States)

    Majdoub, Senda; Zemni, Houcem; Zaghouani, Houneida; Ben Salem, Halima Houda; Amara, Habib; Bakir, Dajla; Kraeim, Chakib

    2016-01-01

    Dermatomyositis is a connective characterized by inflammation of skeletal muscle with cutaneous manifestations. Their etiologies, still unknown, associate environmental and genetic factors. Among lung complications described, interstitial pneumopathies are common complications. Other complications are rarely reported as pneumomediastinum. We report a case of pneumomediastinum with aeric in massive skin dissection occurred in a patient with dermatomyositis. We will discuss the frequency, causes and pathophysiology of the disease according to the literature.

  16. Opportunity of a Lifetime: A Student's Perspective

    Science.gov (United States)

    Gomez, Carlos

    2010-01-01

    In this article, the author shares his journey of obstacles he has endured in his life. The author's journey begins in Tequila, a small town of Mexico, with his cherished and young mother giving birth at the age of 16. He is the oldest and only son, in a family of two younger sisters and two hard-working parents. Poverty has been a reality for his…

  17. Transforming a small business: A learning intervention

    Directory of Open Access Journals (Sweden)

    Dirk J. Geldenhuys

    2012-01-01

    Full Text Available Orientation: This article reports on a learning intervention in a brokers company with fewer than 50 employees. A rich description of the participants’ experience is provided. Research purpose: The purpose of the study was to explore the use of an experiential learning process during an organisation development (OD intervention in a small business by means of a case study.Motivation for the study: This study explored the important role of small businesses; the role of management; and, more specifically, organisation development models that were developed for large corporations; as these emphasise the need to study the purpose of organisation development interventions in small businesses.Research design, approach and method: The study reported on in this article was a qualitative case study in a small brokers company with 21 staff members. The data were analysed manually by means of qualitative content analysis.Main findings: The main finding of the research concerned how experiential learning intervention provided a space for participants to start exploring, and gradually changing the dynamics of their small business, by transforming their business into a more formal company.Practical/managerial implications: The primary implication is that experiential learning interventions that are operationalised, from a psychodynamic perspective, can be valuable when consulted by small businesses during their transformation towards becoming more formal companies.Contribution/value-add: This article contributes to the OD literature on small businesses, with fewer than 50 employees, by providing data on how the learning process, that commenced during an experiential learning intervention, assisted a small company to develop its identity towards that of a more formal company.

  18. SN 1987A - a linear polarimetric study

    Energy Technology Data Exchange (ETDEWEB)

    Mendez, M.; Clocchiatti, A.; Benvenuto, O.G.; Feinstein, C.; Marraco, H.G.

    1988-11-01

    Multicolor linear polarimetric observations of SN 1987A have been obtained between February 28 and April 29, 1987. The intrinsic polarization was shown to decrease at a constant position angle of 27 deg during the first month after the explosion, and 30 days after the explosion the polarization began to grown in the V, R, and I filters at a different position angle. A model to interpret this behavior is proposed. Results are presented for the expansion of the outer layers of the SN and the evolution of the photospheric density. 28 references.

  19. Converting a Display Screen into a Touchscreen

    Institute of Scientific and Technical Information of China (English)

    Qun Wang; Jun Cheng; San-Ming Shen; Yi-Jiang Shen; Jian-Xin Pang

    2014-01-01

    A method is presented to convert any display screen into a touchscreen by using a pair of cameras. Most state of art touchscreens make use of special touch-sensitive hardware or depend on infrared sensors in various configurations. We describe a novel computer-vision-based method that can robustly identify fingertips and detect touch with a precision of a few millimeters above the screen. In our system, the two cameras capture the display screen image simultaneously. Users can interact with a computer by the fingertip on the display screen. We have two important contributions:first, we develop a simple and robust hand detection method based on predicted images. Second, we determine whether a physical touch takes places by the homography of the two cameras. In this system, the appearance of the display screen in camera images is inherently predictable from the computer output images. Therefore, we can compute the predicted images and extract human hand precisely by simply subtracting the predicted images from captured images.

  20. CASAS: A Smart Home in a Box.

    Science.gov (United States)

    Cook, Diane J; Crandall, Aaron S; Thomas, Brian L; Krishnan, Narayanan C

    2013-07-01

    While the potential benefits of smart home technology are widely recognized, a lightweight design is needed for the benefits to be realized at a large scale. We introduce the CASAS "smart home in a box", a lightweight smart home design that is easy to install and provides smart home capabilities out of the box with no customization or training. We discuss types of data analysis that have been performed by the CASAS group and can be pursued in the future by using this approach to designing and implementing smart home technologies.

  1. CASAS: A Smart Home in a Box

    OpenAIRE

    Cook, Diane J.; Crandall, Aaron S.; Thomas, Brian L.; Krishnan, Narayanan C.

    2012-01-01

    While the potential benefits of smart home technology are widely recognized, a lightweight design is needed for the benefits to be realized at a large scale. We introduce the CASAS “smart home in a box”, a lightweight smart home design that is easy to install and provides smart home capabilities out of the box with no customization or training. We discuss types of data analysis that have been performed by the CASAS group and can be pursued in the future by using this approach to designing and...

  2. A City Is a Complex Network

    CERN Document Server

    Jiang, Bin

    2015-01-01

    A city is not a tree but a semi-lattice. To use a more fashionable term, a city is a complex network. The complex network constitutes a unique topological perspective on cities and enables us to better understand the kind of problem a city is. The topological perspective differentiates it from the perspectives of Euclidean geometry and Gaussian statistics that deal with essentially regular shapes and more or less similar things. Many urban theories, such as the Central Place Theory, Zipf's Law, the Image of the City, and the Theory of Centers can be interpreted from the point of view of complex networks. A livable city consists of far more small things than large ones, and their shapes tend to be irregular and rough. This chapter illustrates the complex network view and argues that we must abandon the kind of thinking guided by Euclidean geometry and Gaussian statistics, and instead adopt fractal geometry, power-law statistics, and Alexander's living geometry to develop sustainable cities. Keywords: Scaling, ...

  3. Simulating a Guitar with a Conventional Sonometer

    Science.gov (United States)

    Burstein, Zily; Gower, Christina M.; Varieschi, Gabriele U.

    Musical acoustics is an interesting sub-field of physics which is usually able to engage students in a dual perspective, by combining science and art together. The physics principles involved in most musical instruments can be easily demonstrated with standard laboratory equipment and can become part of lecture or lab activities. In particular, we will show in this paper how to simulate a guitar using a conventional sonometer, in relation to the problem of the instrument intonation, i.e., how to obtain correctly tuned notes on a guitar or similar string instruments.

  4. Simulating a guitar with a conventional sonometer

    CERN Document Server

    Burstein, Zily; Varieschi, Gabriele U

    2011-01-01

    Musical acoustics is an interesting sub-field of physics which is usually able to engage students in a dual perspective, by combining science and art together. The physics principles involved in most musical instruments can be easily demonstrated with standard laboratory equipment and can become part of lecture or lab activities. In particular, we will show in this paper how to simulate a guitar using a conventional sonometer, in relation to the problem of the instrument intonation, i.e., how to obtain correctly tuned notes on a guitar or similar string instruments.

  5. A água e a vida

    OpenAIRE

    JOSÉ CARLOS BRUNI

    1993-01-01

    Trata-se de exercício de interpretação da frase “tudo é água”, atribuída a Tales de Mileto. Depois da exposição dos pontos de vista do senso comum, da ciência e da filosofia sobre a utilidade da água para a vida, tenta-se recuperar, na dimensão simbólica, suas significações mais profundas como fonte, purificação e regeneração da vida humana. O artigo sugere que a poluição das á...

  6. Registered access: a 'Triple-A' approach.

    Science.gov (United States)

    Dyke, Stephanie O M; Kirby, Emily; Shabani, Mahsa; Thorogood, Adrian; Kato, Kazuto; Knoppers, Bartha M

    2016-12-01

    We propose a standard model for a novel data access tier - registered access - to facilitate access to data that cannot be published in open access archives owing to ethical and legal risk. Based on an analysis of applicable research ethics and other legal and administrative frameworks, we discuss the general characteristics of this Registered Access Model, which would comprise a three-stage approval process: Authentication, Attestation and Authorization. We are piloting registered access with the Demonstration Projects of the Global Alliance for Genomics and Health for which it may provide a suitable mechanism for access to certain data types and to different types of data users.

  7. A method for making a battery

    Energy Technology Data Exchange (ETDEWEB)

    Yamadzaki, K.; Kumano, Y.; Nakanisi, M.; Yamane, T.

    1982-08-09

    A layer of electrolyte which is melted with heating is made by pressing at a pressure of 0.1 to 0.8 tons of force per square centimeter a powder form compound. The inorganic adsorbent is first impregnated with an electrolyte, hardened by cooling and ground. The obtained disk with an interior opening is pressed at high pressure of 0.5 to 3 tons of force per square centimeter with a layer of an agglomerate mass. Elements made from the two layered disk, the anode and the body, have high mechanical strength. The internal resistance in the element is reduced. The battery has high discharge characteristics.

  8. Hepatitis A and HIV

    Science.gov (United States)

    ... Problems : Hepatitis A Subscribe Translate Text Size Print Hepatitis A What is Hepatitis? Hepatitis means inflammation of the liver. This condition ... our related pages, Hepatitis B and Hepatitis C . Hepatitis A and HIV Hepatitis A is preventable with ...

  9. What's a Vegetarian?

    Science.gov (United States)

    ... What Happens in the Operating Room? What's a Vegetarian? KidsHealth > For Kids > What's a Vegetarian? A A ... cows) and eggs (from chickens). Many Types of Vegetarians There are many kinds of vegetarians. Here are ...

  10. Making a Quit Plan

    Science.gov (United States)

    ... Driving Finishing a meal Finishing a meal Drinking coffee Drinking coffee Taking a work break Taking a work break ... you smoke to relieve stress or improve your mood? Do you smoke to relieve stress or improve ...

  11. Towards a personalized Internet: a case for a full decentralization.

    Science.gov (United States)

    Kermarrec, Anne-Marie

    2013-03-28

    The Web has become a user-centric platform where users post, share, annotate, comment and forward content be it text, videos, pictures, URLs, etc. This social dimension creates tremendous new opportunities for information exchange over the Internet, as exemplified by the surprising and exponential growth of social networks and collaborative platforms. Yet, niche content is sometimes difficult to retrieve using traditional search engines because they target the mass rather than the individual. Likewise, relieving users from useless notification is tricky in a world where there is so much information and so little of interest for each and every one of us. We argue that ultra-specific content could be retrieved and disseminated should search and notification be personalized to fit this new setting. We also argue that users' interests should be implicitly captured by the system rather than relying on explicit classifications simply because the world is by nature unstructured, dynamic and users do not want to be hampered in their actions by a tight and static framework. In this paper, we review some existing personalization approaches, most of which are centralized. We then advocate the need for fully decentralized systems because personalization raises two main issues. Firstly, personalization requires information to be stored and maintained at a user granularity which can significantly hurt the scalability of a centralized solution. Secondly, at a time when the 'big brother is watching you' attitude is prominent, users may be more and more reluctant to give away their personal data to the few large companies that can afford such personalization. We start by showing how to achieve personalization in decentralized systems and conclude with the research agenda ahead.

  12. A characterization of associativity

    Science.gov (United States)

    Charlesworth, Arthur

    1990-01-01

    A necessary and sufficient condition for associativity of a function is given, in terms of a particular relation being a function. The concept of an associative function is generalized to the concept of a function being asssociative relative to a sequence and a characterization of such relative associativity is also given. These two characteristics are applied to the problem of proving the associativity, or relative associativity, of a function.

  13. Designing for a Dollar a Day

    DEFF Research Database (Denmark)

    Kyng, Morten

    1988-01-01

    for independent end user design activities. I go on by presenting a set of "cheap tools" and techniques, including the use mockup's. This set covers the issues of establishing the possibility of alternatives, of creating visions of new and different uses of technology, and of designing computer support. A central...

  14. Marketing Education on a Shoestring: A Model.

    Science.gov (United States)

    Shreeve, William; And Others

    Few educators envision themselves as marketing or public relations experts, yet economic reality is forcing many academicians into these roles. Over the past four years, the Eastern Washington University Department of Education has developed a successful marketing model for educators. The model begins with a successful reform of department…

  15. Quest for a Sustainable University: A Review

    Science.gov (United States)

    Amaral, Luís P.; Martins, Nelson; Gouveia, Joaquim B.

    2015-01-01

    Purpose: The paper aims to deliver a general review of the methods used to pursue the concept of a "sustainable university". Design/methodology/approach: The research was Internet based, and it included research papers, books, conference proceedings, technical reports and Internet Web sites. The review was divided in two main parts:…

  16. Decapitation: A Case for a Better Guillotine

    Science.gov (United States)

    2007-02-23

    to success. 30 Robert S. Litwak, “Regime Change or Change in a Regime,” in Proliferation of WMD in the Middle East, editor James A. Russell (New...Bush, The National Security Strategy of the United States of America (Washington D.C.: The White House, March 2006). 35 John King, David Ensor , Jamie

  17. A linguistic integration of a biological database

    Energy Technology Data Exchange (ETDEWEB)

    Collado-Vides, J. [Univ. Nacional Autonoma de Mexico, Morelos (Mexico)

    1993-12-31

    One of the major theoretical concerns associated with the Human Genome Project is that of the methodology to decipher ``raw`` sequences of DNA. This work is concerned with a subsequent problem, the one of how huge amounts of already deciphered information that will emerge in the near future can be integrated in order to enhance their biological understanding. The formal foundations for a linguistic theory of the regulation of gene expression will be discussed. The linguistic analysis presented here is restricted to sequences with known biological function since: (1) there is no way to obtain, from DNA sequences alone, a regulatory representation of transcription units, and (2) the elements of substitution -- methodologically equivalent to phonemes -- are complete sequences of the binding sites of proteins. The authors have recently collected and analyzed the regulatory regions of a large number of E. coli promoters. The number of sigma 70 promoters studied may well represent the largest homogeneous body of knowledge of gene regulation at present. This collection is a data set for the construction of a grammar of the sigma 70 system of transcription and regulation. This grammatical model generates all the arrays of the collection, as well as novel combinations predicted to be consistent with the principles of the data set. This Grammar is testable, as well as expandable if the analysis of emerging data requires it. The elaboration of a linguistic methodology capable of integrating prokaryotic data constitutes a preliminary step towards the analysis and integration of the more complex eukaryotic systems of regulation.

  18. A Transmedia Topology of 'Making a Murderer'

    NARCIS (Netherlands)

    Hook, Alan; Barrios-O'Neill, Danielle; Mairs Dyer, Jolene

    2016-01-01

    textabstractThis article constructs a transmedia topology of the Making a Murderer text, demonstrating influences of various forms of documentary, interactive gaming culture, and post-digital writing on the series itself as well as on the paratextual cloud of works that grew up around it. Here we de

  19. Building a Digital Library on a Shoestring

    Science.gov (United States)

    Boyd, Kate Foster; Creighton, Alma

    2006-01-01

    In this article, the authors discuss ways one can create a digital library on a shoestring despite the current high technology costs. Here, they describe the University of South Carolina's digital library development. The cost associated with building and maintaining the digital collections seems to have been worth it based on the feedback that…

  20. Glomus jugulare (Type A: A case review

    Directory of Open Access Journals (Sweden)

    Vinod T Kandakure

    2012-01-01

    Full Text Available We report a glomus jugulare tumor in a 60 yrs old female; non diabetic, non hypertensive who presented with continuous pulsatile hissing tinnitus in right ear with progressive hearing impairment and fullness in the ear. Detailed history and examination with aid of investigations it turned out to be glomus jugulare, treated by surgical excision by post auricular hypotympanotomy approach.

  1. A VORTEX MODEL OF A HELICOPTER ROTOR

    Directory of Open Access Journals (Sweden)

    Valentin BUTOESCU

    2009-06-01

    Full Text Available A vortex model of a helicopter rotor is presented. Each blade of the rotor has three degrees of freedom: flapping, lagging and feathering. The motions after each degree of freedom are also known for all blades. The blade is modelled as a thin vortex surface. The wakes are free fluid surfaces. A system of five equations are obtained: the first one is the integral equation of the lifting surface (rotor, the next three describe the wakes motion, and the last one relates the vortex strength on the wakes and the variation of vorticity on the rotor. A numerical solution of this system is presented. To avoid the singularities that can occur due to the complexity of vortex system, a desingularized model of the vortex core was adopted. A Mathcad worksheet containing the method has been written.The original contribution of the work. The calculation method of the motion of the wakes free vortex system, the development of the vortex cores in time and a new method to approximate the aerodynamic influence of remoted wake regions.

  2. [A strong man with a weak shoulder].

    Science.gov (United States)

    Henket, Marjolijn; Lycklama á Nijeholt, Geert J; van der Zwaal, Peer

    2013-01-01

    A 47-year-old former olympic athlete had pain and weakness of his left shoulder. There was no prior trauma. He had full range-of-motion and a scapular dyskinesia. There was atrophy of the trapezius and sternocleidomastoideus muscles. He was diagnosed with 'idiopathic neuritis of the accessorius nerve'.

  3. Just a routine operation: a critical discussion.

    Science.gov (United States)

    McClelland, G; Smith, M B

    2016-05-01

    This article has summarised a critical discussion of the human factors that contributed to the death of a patient from a failure to respond appropriately to a 'can't intubate, can't ventilate' scenario. The contributory factors included the clinical team's inability to communicate, prioritise tasks and demonstrate effective leadership and assertive followership. The film Just a routine operation has now been in circulation for several years. When a system is designed and introduced with the intention of making a change to clinical practice, it can quickly become just another component of an organisation's architecture and complacency around its use can develop. This article has been written specifically for perioperative practitioners to renew the debate around the human factors that contribute to patient harm. By critically discussing Just a routine operation and attempting to review why the incident occurred, this article has attempted to emphasise that some of the conditions and behaviours that contributed to the death of Elaine Bromiley may be latent within our organisations and teams, and may continue to contribute to failures that affect patient safety.

  4. How Could a Beaver Start a War?

    Science.gov (United States)

    Millward, Robert

    2010-01-01

    Students gain a better understanding of war and economics when the variables come alive through stories, artifacts, and paintings. In this article, the author describes a short story about the fur trade which can generate lots of student questions about the fur economics, the Eastern Woodland Indians, trade artifacts, and war. The author also…

  5. Merging a Library and a Computing Center.

    Science.gov (United States)

    Plane, Robert A.

    1982-01-01

    Details are provided of the development of a new library at Clarkson College. It was seen from the start that the new center needed to be viewed as the hub of a campus-wide system to provide integrated informational support for instructional, research, and administrative activities of the entire college. (MP)

  6. Matematicas: Nivel A (Mathematics: Level A).

    Science.gov (United States)

    Duron, Dolores; And Others

    A teacher's manual was developed for an elementary level mathematics course in Spanish as part of an immersion program for English speaking children. The Level A manual is designed for kindergarten and grade 1 pupils. Teaching procedures, conceptual objectives, vocabulary, and structures are included. Activities are designed to teach either…

  7. A Reverse Shock in GRB 160509A

    CERN Document Server

    Laskar, Tanmoy; Berger, Edo; Fong, Wen-fai; Margutti, Raffaella; Shivvers, Isaac; Williams, Peter K G; Kopac, Drejc; Kobayashi, Shiho; Mundell, Carole; Gomboc, Andreja; Zheng, WeiKang; Menten, Karl M; Graham, Melissa L; Filippenko, Alexei V

    2016-01-01

    We present the second multi-frequency radio detection of a reverse shock in a $\\gamma$-ray burst. By combining our extensive radio observations of the Fermi-LAT GRB 160509A at $z = 1.17$ up to $20$ days after the burst with Swift X-ray observations and ground-based optical and near-infrared data, we show that the afterglow emission comprises distinct reverse shock and forward shock contributions: the reverse shock emission dominates in the radio band at $\\lesssim10~$days, while the forward shock emission dominates in the X-ray, optical, and near-infrared bands. Through multi-wavelength modeling, we determine a circumburst density of $n_0\\approx10^{-3}~$cm$^{-3}$, supporting our previous suggestion that a low-density circumburst environment is conducive to the production of long-lasting reverse shock radiation in the radio band. We infer the presence of a large excess X-ray absorption column, $N_{\\rm H} \\approx 1.5\\times10^{22}~$cm$^{-2}$, and a high rest-frame optical extinction, $A_{\\rm V}\\approx3.4~$mag. We...

  8. A Report on A Christmas Carol

    Institute of Scientific and Technical Information of China (English)

    周志聪

    2010-01-01

    @@ Charles Dickens is generally considered the greatest English novelist of the Victorian period,as well as a vigorous social campaigner.His works are characterized by attacks on social evils,injustice and hypocrisy,and among which there is one that Dickens called his "little Christmas Book",that is A Christmas Carol.

  9. Radioactivity a history of a mysterious science

    CERN Document Server

    Malley, Marjorie C

    2011-01-01

    Beginning with an obscure discovery in 1896, radioactivity led researchers on a quest for understanding that ultimately confronted the intersection of knowledge and mystery. This book tells the story of a new science that profoundly changed physics and chemistry, as well as areas such as medicine, geology, meteorology, archaeology, industry, politics, and popular culture.

  10. Marry a Man, Not a House

    Institute of Scientific and Technical Information of China (English)

    Zhang Xiang

    2011-01-01

    I used to consider owning a house a must for my future husband.Men without good finances weren't appealing to me.After graduating university,I met my first boyfriend.I loved him,but I loved his money,too.Our romance only lasted several months and ended in my heartbreak.

  11. A phylogenetic blueprint for a modern whale.

    Science.gov (United States)

    Gatesy, John; Geisler, Jonathan H; Chang, Joseph; Buell, Carl; Berta, Annalisa; Meredith, Robert W; Springer, Mark S; McGowen, Michael R

    2013-02-01

    The emergence of Cetacea in the Paleogene represents one of the most profound macroevolutionary transitions within Mammalia. The move from a terrestrial habitat to a committed aquatic lifestyle engendered wholesale changes in anatomy, physiology, and behavior. The results of this remarkable transformation are extant whales that include the largest, biggest brained, fastest swimming, loudest, deepest diving mammals, some of which can detect prey with a sophisticated echolocation system (Odontoceti - toothed whales), and others that batch feed using racks of baleen (Mysticeti - baleen whales). A broad-scale reconstruction of the evolutionary remodeling that culminated in extant cetaceans has not yet been based on integration of genomic and paleontological information. Here, we first place Cetacea relative to extant mammalian diversity, and assess the distribution of support among molecular datasets for relationships within Artiodactyla (even-toed ungulates, including Cetacea). We then merge trees derived from three large concatenations of molecular and fossil data to yield a composite hypothesis that encompasses many critical events in the evolutionary history of Cetacea. By combining diverse evidence, we infer a phylogenetic blueprint that outlines the stepwise evolutionary development of modern whales. This hypothesis represents a starting point for more detailed, comprehensive phylogenetic reconstructions in the future, and also highlights the synergistic interaction between modern (genomic) and traditional (morphological+paleontological) approaches that ultimately must be exploited to provide a rich understanding of evolutionary history across the entire tree of Life.

  12. Making a Computer Club, Making a Community.

    Science.gov (United States)

    Gillingham, M.; Youniss, E.

    2000-01-01

    Describes the development of a computer club at an inner city elementary school in Chicago. Discusses the sense of community that grew; parent involvement; scaffold learning; self-control; community service; difficulties in creating a sustainable innovation; and possible future directions. (Contains 11 references.) (LRW)

  13. A Miracle over A Decadef Wuxi Sunmart

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    @@ Miracle started A decade ago, Wuxi Sunmart was just no name.At that time, few people noticed Jiangsu Snow Leopard Atomi-zation Pot Industry Limited Company, which was established in early 1998, as it was a small workshop with the registered capital of only RMB 1.6 million.And that is where Wuxi Sunmart's miracle began.

  14. A Note on a Result of Pesin

    Institute of Scientific and Technical Information of China (English)

    Qu Yan-hui

    2003-01-01

    Pesin gives an equivalent definition of the pressures defined respectively by open covering and Bowen covering of the dynamical system which plays an important role in the studies on dimension theory in dynamical systems.In this note,we show a gap of his proof and present a proof for this result.

  15. A strong start, a promising future

    Institute of Scientific and Technical Information of China (English)

    Zihe Rao

    2011-01-01

    @@ Protein & Cell has made a very strong start in its first full year of publication, covering 12 monthly issues with a consistently high standard of content and production. Thanks to the contributors, editors, editorial board, editodal staff and publishers, both the scientific quality and the production quality of the journal have been outstanding.

  16. A false explosion for a real intervention

    CERN Multimedia

    2006-01-01

    Together with their French and Swiss counterparts, the CERN Fire Brigade carried out a spectacular exercise in the LHCb cavern. It was designed to test the coordination of the fire and rescue services of the Organization's two Host States. Inside a temporary medical station set up above ground, the emergency teams deliver medical care to the injured before they are taken to hospital.An accident victim in the underground cavern about to be evacuated. 'I was taking a group of visitors on a tour of the LHCb cavern when there was a huge explosion and I suffered serious burns to the thorax. The rescue services arrived on the scene and I was taken to the medical station'. Fortunately, this is not an account of real events but a scenario given to one of 20 volunteer 'victims' who took part in a large-scale safety exercise in the LHCb cavern. On 26 September, the CERN Fire Brigade organised a spectacular exercise in collaboration with the CERN Medical Service, the Fire and Rescue Service (SDIS) of the Department of t...

  17. A Super Computer For a Super City

    Institute of Scientific and Technical Information of China (English)

    FRANCISCO; LITTLE

    2011-01-01

    It’s a gigantic construction site that stretches beyond the horizon. Blue and red heavy-duty trucks in endless lines trundle about beneath a gaggle of cranes hoisting steel. And all the while enormous ultramodern buildings,bearing the names of the largest local and international companies,rise from the earth.

  18. A Reverse Shock in GRB 130427A

    CERN Document Server

    Laskar, T; Zauderer, B A; Margutti, R; Soderberg, A M; Chakraborti, S; Lunnan, R; Chornock, R; Chandra, P; Ray, A

    2013-01-01

    We present extensive radio and millimeter observations of the unusually bright GRB 130427A at z=0.340, spanning 0.67 to 12 days after the burst. Taken in conjunction with detailed multi-band UV, optical, NIR, and X-ray observations we find that the broad-band afterglow emission is composed of distinct reverse shock and forward shock contributions. The reverse shock emission dominates in the radio/millimeter and at 0.1 days in the UV/optical/NIR. We further find that the optical and X-ray data require a Wind circumburst environment, pointing to a massive star progenitor. Using the combined forward and reverse shock emission we find that the parameters of the burst are an isotropic kinetic energy of E_Kiso~2e53 erg, a mass loss rate of Mdot~3e-8 Msun/yr (for a wind velocity of 1,000 km/s), and a Lorentz factor at the deceleration time of Gamma(200s)~130. Due to the low density and large isotropic energy, the absence of a jet break to ~15 days places only a weak constraint on the opening angle of theta_j>2.5 deg...

  19. With a little help from a friend.

    NARCIS (Netherlands)

    Schildwacht, R.; Bolhuis, S.; Broeders, A.

    2006-01-01

    The artcle describes the outcomes of a pilot study on professional development of teachers. The project was initiated by the school management. Nine teachers volunteered to work on their professional development in a programme consisting of: • meetings discussing on relevant teacher topics • meetin

  20. A Small Essay About a Big Boulevard

    Directory of Open Access Journals (Sweden)

    Elena Grigoryeva

    2015-08-01

    Full Text Available The essay presents the analogies of turning city borders and walls into boulevards and gardens through the examples of Moscow and Irkutsk. The main street of Irkutsk is viewed in a new light, as a boulevard. It is proposed to take into consideration the peculiarities of the four sense-parts of the street when working on design codes.

  1. When a body meets a body

    DEFF Research Database (Denmark)

    Pelowski, Matthew John; Liu, Tao; Palacios, Victor

    2014-01-01

    We consider the phenomenon of social interactions within the art museum, arguing that even the bare possibility of meeting others or intruding into their gaze can have a profoundly detrimental effect on art experience. This is done by tracing a finding from our previous studies in which we consid...

  2. Death Ends a Life, not a Relationship

    DEFF Research Database (Denmark)

    Christensen, Dorthe Refslund; Sandvik, Kjetil

    2014-01-01

    In the final chapter, “Death Ends a Life, not a Relationship: objects as media on children’s graves”, Dorthe Refslund Christensen and Kjetil Sandvik investigate the relational affordances offered by objects as media in practices of death and commemoration on children’s graves. The authors argue t...

  3. "One Wears a Melon, Another a Cylinder"

    DEFF Research Database (Denmark)

    Shaw, Philip; Caudery, Tim; Petersen, Margrethe

    This paper analyses interviews with exchange students in four Scandinavian universities and conducts a longitudinal analysis of three picture descriptions spread over a twenty-week period. It briefly describes the opportunities available to exchange students for language learning, both English an...

  4. A sun holiday is a sunburn holiday

    DEFF Research Database (Denmark)

    Petersen, Bibi; Thieden, Elisabeth; Philipsen, Peter Alshede

    2013-01-01

    Many people take holidays in sunny locations with the express aim of sunbathing. This may result in sunburn, which is a risk factor for skin cancer. We investigated 25 Danish sun seekers during a week's holiday in the Canary Islands. The percentage of body surface area with sunburn was determined...

  5. Danish - a Language with a Future?

    DEFF Research Database (Denmark)

    Petersen, Margrethe; Shaw, Philip

    1999-01-01

    A project on the use of English for academic purposes in Denmark has revealed that the academic article written in Danish may be a dying genre. Based on this finding and on observations on the use of English in Danish texts (or contexts), the future of the Danish language and of translation and i...

  6. From a magnet to a heat pump

    DEFF Research Database (Denmark)

    Navickaité, Kristina; Neves Bez, Henrique; Engelbrecht, Kurt

    2016-01-01

    The magnetocaloric effect (MCE) is the thermal response of a magnetic material to an applied magnetic field. Magnetic cooling is a promising alternative to conventional vapor compression technology in near room temperature applications and has experienced significant developments over the last fi...

  7. Ciencia: Nivel A (Science: Level A).

    Science.gov (United States)

    Duron, Dolores; And Others

    A teacher's manual was developed for an elementary level science course in Spanish as part of an immersion program for English speaking children. The Level A manual is designed for kindergarten and grade 1 pupils. The five units cover the basic concepts of the weather, colors, animals, plants, and the five senses. Each unit includes vocabulary,…

  8. A military home with a heart.

    Science.gov (United States)

    Cowper, Andy

    2010-06-01

    A classically inspired and iconic building by the Thames in south west London, the Royal Hospital Chelsea is home to the equally iconic Chelsea pensioners--retired ex-military staff who have come to live in this unique retirement community. Now the nursing needs of this special group are being met in a new wing of the site, called the Margaret Thatcher Infirmary.

  9. A step up for a few postdocs

    CERN Multimedia

    2000-01-01

    Dutch postdocs at the Netherlands Cancer Institute complained recently of their lack of research independance and poor career progress. As a result they are now getting a proper career structure. Other institutions should also tackle this problem before serious recruitment problems develop (1/2 p).

  10. Could a zygote be a human being?

    Science.gov (United States)

    Burgess, John

    2010-02-01

    This paper re-examines the question of whether quirks of early human foetal development tell against the view (conceptionism) that we are human beings at conception. A zygote is capable of splitting to give rise to identical twins. Since the zygote cannot be identical with either human being it will become, it cannot already be a human being. Parallel concerns can be raised about chimeras in which two embryos fuse. I argue first that there are just two ways of dealing with cases of fission and fusion and both seem to be available to the conceptionist. One is the Replacement View according to which objects cease to exist when they fission or fuse. The other is the Multiple Occupancy View - both twins may be present already in the zygote and both persist in a chimera. So, is the conceptionist position tenable after all? I argue that it is not. A zygote gives rise not only to a human being but also to a placenta - it cannot already be both a human being and a placenta. Neither approach to fission and fusion can help the conceptionist with this problem. But worse is in store. Both fission and fusion can occur before and after the development of the inner cell mass of the blastocyst - the entity which becomes the embryo proper. The idea that we become human beings with the arrival of the inner cell mass leads to bizarre results however we choose to accommodate fission and fusion.

  11. A child with pica. A case presentation.

    Directory of Open Access Journals (Sweden)

    Lidia Rosa Pérez González

    2005-04-01

    Full Text Available This is a case of a 4 year old child who was brought to the provincial Pediatric Hospital because of faecal stones. Iron deficit and intestinal parasites were found . The patient received treatment for 6 months till the ingestion of stones disappeared with the control of the etiologic factors that caused it.

  12. Mapping a Space for a Rhetorical-Cultural Analysis: A Case of a Scientific Proposal

    Science.gov (United States)

    Dorpenyo, Isidore Kafui

    2015-01-01

    This article analyzes a proposal submitted to a funding unit in Michigan Technological University by a PhD Forestry student. A rhetorical-cultural approach of the text provides evidence to argue that scientific writing is rooted in a cultural practice that valorizes certain kinds of thought, practices, rituals, and symbols; that a scientist's work…

  13. Ever Fly a Tetrahedron?

    Science.gov (United States)

    King, Kenneth

    2004-01-01

    Few things capture the spirit of spring like flying a kite. Watching a kite dance and sail across a cloud spotted sky is not only a visually appealing experience it also provides a foundation for studies in science and mathematics. Put simply, a kite is an airfoil surface that flies when the forces of lift and thrust are greater than the forces of…

  14. A Pleasing Birth

    NARCIS (Netherlands)

    Vries, De Raymond

    2005-01-01

    Women have long searched for a pleasing birth-a birth with a minimum of fear and pain, in the company of supportive family, friends, and caregivers, a birth that ends with a healthy mother and baby gazing into each other's eyes. For women in the Netherlands, such a birth is defined as one at home un

  15. A Reverse Shock in GRB 160509A

    Science.gov (United States)

    Laskar, Tanmoy; Alexander, Kate D.; Berger, Edo; Fong, Wen-fai; Margutti, Raffaella; Shivvers, Isaac; Williams, Peter K. G.; Kopač, Drejc; Kobayashi, Shiho; Mundell, Carole; Gomboc, Andreja; Zheng, WeiKang; Menten, Karl M.; Graham, Melissa L.; Filippenko, Alexei V.

    2016-12-01

    We present the second multi-frequency radio detection of a reverse shock in a γ-ray burst. By combining our extensive radio observations of the Fermi-Large Area Telescope γ-ray burst 160509A at z = 1.17 up to 20 days after the burst with Swift X-ray observations and ground-based optical and near-infrared data, we show that the afterglow emission comprises distinct reverse shock and forward shock contributions: the reverse shock emission dominates in the radio band at ≲10 days, while the forward shock emission dominates in the X-ray, optical, and near-infrared bands. Through multi-wavelength modeling, we determine a circumburst density of {n}0≈ {10}-3 {{cm}}-3, supporting our previous suggestion that a low-density circumburst environment is conducive to the production of long-lasting reverse shock radiation in the radio band. We infer the presence of a large excess X-ray absorption column, N H ≈ 1.5 × 1022 {{cm}}-2, and a high rest-frame optical extinction, A V ≈ 3.4 mag. We identify a jet break in the X-ray light curve at {t}{jet}≈ 6 {days}, and thus derive a jet opening angle of {θ }{jet}≈ 4^\\circ , yielding a beaming-corrected kinetic energy and radiated γ-ray energy of {E}{{K}}≈ 4× {10}50 erg and {E}γ ≈ 1.3× {10}51 erg (1-104 keV, rest frame), respectively. Consistency arguments connecting the forward shocks and reverse shocks suggest a deceleration time of {t}{dec} ≈ 460 s ≈ T 90, a Lorentz factor of {{Γ }}({t}{dec})≈ 330, and a reverse-shock-to-forward-shock fractional magnetic energy density ratio of {R}{{B}}\\equiv {ɛ }{{B},{RS}}/{ɛ }{{B},{FS}}≈ 8. Our study highlights the power of rapid-response radio observations in the study of the properties and dynamics of γ-ray burst ejecta.

  16. A cabeça voraz

    Directory of Open Access Journals (Sweden)

    Betty Mindlin

    1996-08-01

    Full Text Available o artigo focaliza um mito indígena sobre a cabeça voadora e voraz, registrado pela autora em vários grupos indígenas da Amazônia, como os Tupari, os Macurap, os Jabuti, os Aruá, os Sateré-Mawé. Cada versão do mito tem um enredo diferente, mas o tema intrigante é sempre o mesmo: a mutilação do corpo, a cabeça que se transforma ou cola-se num outro ser. Procura-se mergulhar no significado desse mito, ao qual Claude Lévi-Strauss dedicou boa parte de dois livros magistrais, A origem das maneiras da mesa e A oleira ciumenta, e que foi usado por Mário de Andrade no livro clássico sobre o herói brasileiro, Macunaína, uma das poucas obras de fição brasileira a se inspirar em temas e personagens míticos indígenas. O registro de campo desse mito é uma pequena ponta de um amplo trabalho de documentação da tradição e dos mitos indígenas brasileiros, que a autora vem realizando há alguns anos. A intenção, nesse texto, é compreender a riqueza do imaginário indígena brasileiro, insistir na necessidade de documentar culturas que são nossas contemporâneas e ainda bastante desconhecidas. A fição e a arte brasileiras poderiam ampliar muito o seu universo ao explorar e tentar compreender as raízes brasileiras que nos são dadas por mais de 200 povos indígenas do país. Também para os índios, escrever, contar, divulgar e usar nas próprias escolas os seus mitos é importante para reafirmar a identidade étnica e valorizar sua participação na sociedade brasileira.The article focuses an indian myth about a flying and voracious head, that was told to the author by several indian tribes from the Amazon, such as the Tupari, the Macurap, the Jabuti, the Aruá, the Sateré-Mawé. Each version has a different plot, but the intriguing theme is always the same: the mutilation of the body, a head that is transformed or attaches itself to another being. The essay delves into the meaning of this myth, to which Claude L

  17. A Fat Higgs with a Magnetic Personality

    CERN Document Server

    Craig, Nathaniel; Thaler, Jesse

    2011-01-01

    We introduce a novel composite Higgs theory based on confining supersymmetric QCD. Supersymmetric duality plays a key role in this construction, with a "fat" Higgs boson emerging as a dual magnetic degree of freedom charged under the dual magnetic gauge group. Due to spontaneous color-flavor locking in the infrared, the electroweak gauge symmetry is aligned with the dual magnetic gauge group, allowing large Yukawa couplings between elementary matter fields and the composite Higgs. At the same time, this theory exhibits metastable supersymmetry breaking, leading to low-scale gauge mediation via composite messengers. The Higgs boson is heavier than in minimal supersymmetric theories, due to non-decoupling D-terms and a large F-term quartic coupling. This theory predicts quasi-stable TeV-scale pseudo-modulini, some of which are charged under standard model color, possibly giving rise to long-lived R-hadrons at the LHC.

  18. Education:a discipline or a field?

    Institute of Scientific and Technical Information of China (English)

    WANG Hongcai

    2007-01-01

    Historically,scholars have made unfailing efforts to position education as a standard science,but no solid success has been achieved regardless of the positivistic paradigm,quantitative approaches,or value-free neutral stances they adopted.In China,scholars have set up a so-called"three independency"standard for the scientific study of education,but it has been finally proved invalid in practice.As interdisciplines permeate the field of education,education experiences a crisis of being colonized.After serious rethinking,interdisciplines were widely believed to do more good than harm to education.Therefore,education is beginning to transform from a"colony"to an"empire".In this transformation,education finds it necessary to break the traditional disciplinary boundaries and make it a field in which interdisciplinary communication is contributory to the enrichment of scholarship.

  19. A Hop, Skip and a Jump Away

    DEFF Research Database (Denmark)

    Smith, Shelley

    2009-01-01

    This paper will address spatial experience and issues of ownership, exchange and indeterminateness in urban public space. The contemporary urban situation is characterised by media and mobility, where the potential for alienation - not only from each other, but also from the spaces we occupy......, is prevalent. Themed and ‘designed' spaces - many of the most common public spaces of the contemporary urban environment - often propagate a limitation in the diversity of their users, but they also propagate a kind of spatial inertia - an object-fixation prescribing use within a pre-determined schematic...... that focuses on clearly demarcated borders for containment. The discipline of parkour - the art of movement - will be used as a lens through which to view the potential that lies in activating the indeterminate city, and accessing a sense of ownership, belonging and interconnectivity in urban public space....

  20. Workplace spirituality: A tool or a trend?

    Directory of Open Access Journals (Sweden)

    Philip J.W. Schutte

    2016-05-01

    Full Text Available Workplace spirituality is a construct widely discussed over the past few decades and it is a much-disputed inquiry field which is gaining the interest of practitioners and scholars. Some clarifications regarding concepts and definitions are necessary in order to structure and direct the current debate. The aim of this conceptual article is to gain a better understanding regarding the direction in which this field of study is progressing and to put the question on the table namely, whether workplace spirituality is only a new tool to be used in leadership development or is it a trend to be taken seriously? The results showed that this field has potential to further development. This article can be used as foundation for future studies within the knowledge area of practical theology.

  1. Gingivectomía a bisel externo

    Directory of Open Access Journals (Sweden)

    Teresita Burgos Fuentes

    2014-06-01

    Full Text Available ResumenEl propósito de este reporte es describir el alargamiento coronario como tratamiento estético periodontal. La gingivectomía es un tratamiento quirúrgico antiguo. La indicación para la gingivectomía es la eliminación completa de la bolsa periodontal, hiperplasias. El diseño fisiológico del margen libre gingival por el medio quirúrgico debe ser tomado en consideración. Se reporta un caso clínico de un paciente masculino de 32 años de edad que exhibe gran cantidad de encía cuando sonríe. El logro de resultados estéticos excelentes en la terapia no es una cuestión de azar, es algo planificado antes de iniciar el tratamiento. (Duazary 2008; 125-128AbstractThe purpose of this report is to describe the external level gingivectomy as a periodontal esthetic treatment; the gingivectomy is the oldest surgical approach in periodontal therapy. Indication for performance of the gingivectomy is the complete elimination of the periodontal pocket and hyperplasia gingival. The physiologic design of the free gingival margin by surgical means, gingivoplasty, must be taken under consideration. A clinic case is been reported, a 32 years old with a big amount of gum tissue when she smiles. The achievement of excellent esthetics results on a therapy is not a matter of luck, must be into the treatment plan before starting this one.Key words: periodontal treatment; gingivectomy; gingival hyperplasia.

  2. Biodiesel: A fuel, a lubricant, and a solvent

    Science.gov (United States)

    Biodiesel is well-known as a biogenic alternative to conventional diesel fuel derived from petroleum. It is produced from feedstocks such as plant oils consisting largely of triacylglycerols through transesterification with an alcohol such as methanol. The properties of biodiesel are largely compet...

  3. A Clubhouse Is a Clubhouse Is a Clubhouse.

    Science.gov (United States)

    Zhao, Y.; Mishra, P.; Girod, M.

    2000-01-01

    Describes the design, development, and implementation of a technology-rich after-school program for middle schools called KLICK (Kids Learning in Computer Klubhouses). Topics include learning activities; learning environments; constructivism; social and organizational arrangements; collaboration; the culture of schooling; and issues of innovation,…

  4. Determining a rotation of a tetrahedron from a projection

    CERN Document Server

    Gardner, Richard J; Theobald, Thorsten

    2011-01-01

    The following problem, arising from medical imaging, is addressed: Suppose that $T$ is a known tetrahedron in $\\R^3$ with centroid at the origin. Also known is the orthogonal projection $U$ of the vertices of the image $\\phi T$ of $T$ under an unknown rotation $\\phi$ about the origin. Under what circumstances can $\\phi$ be determined from $T$ and $U$?

  5. A Year To Make a Difference

    Science.gov (United States)

    Howell, J. Emory

    1999-01-01

    Secondary School Feature Articles * Animating Reactions: A Low-Cost Activity for Particle Conceptualization at the Secondary Level, by Robert W. Milne, p 50. * The Gravity of the Situation, by Damon Diemente, p 55. You must be the change you wish to see in the world. Mahatma Ghandi The beginning of a new year always brings with it a feeling of anticipation, a desire to achieve new goals, and a certain urgency to accomplish. Beginning the last year of the 1900s seems somehow to amplify these feelings. This week I was reminded twice of the challenge that lies in focusing on those things that we can change and not being fettered by those we cannot. The first example occurred in my office on a Monday afternoon. A young woman was considering the choice between entering graduate school or seeking a high school teaching position. After approximately 10 years in the workforce, she had entered college and was now within a semester of graduation. While pursuing her studies she had served as a substitute teacher in her home community, believing the experience would affirm her longstanding desire to teach. The behavioral characteristics of some students seemed to be at odds with her memories of high school only a dozen years earlier. Now she was questioning whether she could make a difference in young lives or if she should give up the idea of teaching in high school in favor of graduate degrees in her discipline, which would lead to a career in post-secondary education. Although I assured her that she could indeed have a great impact on high school students, I empathized with the concern she was feeling. The second example occurred the same day, in a class for chemistry majors who are preparing to teach high school chemistry. While considering the importance of performance assessment, with discussion centered on a JCE article ((a href="//1998/jan/abs64.html">Rasp, S. L. J. Chem. Educ. 1998, 75, 64-66), one class member asked why we only discussed and read about what teachers

  6. A geomechanical model of a sinkhole formation

    Science.gov (United States)

    Danchiv, Alexandru; Zamfirescu, Florian; Mocuta, Marius; Popa, Iulian; Zlibut, Alexandru; Huggenberger, Peter; Zechner, Eric; Dresmann, Horst; Scheidler, Stefan; Wiesmeier, Stefan

    2016-04-01

    On December 2010 a sinkhole was suddenly formed close to the eastern flank of Ocna-Mures salt dome. Soon after the collapse the sinkhole was filled with brine forming a salt lake called Plus Lake. The total volume of sinkhole of about 100000 m3 remained constant since February 2011. The Ocna Mures salt dome is situated on the western border of the Transylvanian basin (Romania) and has been exploited for a long time. The ceilings of some shallow mine chambers are now collapsed and filled with brine. Along the eastern flank of the salt dome there is a disturbed zone due to diapirism. Its presence is suggested by the strong fragmentation of rock in the boreholes drilled along the salt-sterile contact, as it resulted from the low values of RQD index. The sinkhole is probably due to a pressure increase along the diapir flank. The causes of this sudden increase of pressure are not well known. Most probably it is due to the damage of the tubing of a flank borehole as mentioned in a technical report of the exploiting company. The injected fresh water expelled through the breaches of the damaged borehole and, due to the high pressure flushed up the crushed material of the disturbed zone. In order to better understand the setting up of the Plus Lake joint research efforts were performed by teams from Bucharest and Basel Universities since 2013. For the geomechanical approach a numerical model was performed using the Flac 7.0 code. In a first stage the creep behavior of salt was analyzed considering a Norton creep law. It resulted that after 100 years the salt reached equilibrium, the creep could be neglected and in a first approximation mechanical equilibrium could be analyzed considering only an elasto-plastic behavior of both the salt and the sterile. For both the salt and the surrounding sedimentary rocks the Mohr-Coulomb criterion was considered. The properties of sterile rocks were estimated following the GSI system. Due to poor rock quality the strength parameters have

  7. Birth of a theorem a mathematical adventure

    CERN Document Server

    Villani, Cédric

    2015-01-01

    This man could plainly do for mathematics what Brian Cox has done for physics" (Sunday Times). What goes on inside the mind of a rock-star mathematician? Where does inspiration come from? With a storyteller's gift, Cedric Villani takes us on a mesmerising journey as he wrestles with a new theorem that will win him the most coveted prize in mathematics. Along the way he encounters obstacles and setbacks, losses of faith and even brushes with madness. His story is one of courage and partnership, doubt and anxiety, elation and despair. We discover how it feels to be obsessed by a theorem during your child's cello practise and throughout your dreams, why appreciating maths is a bit like watching an episode of Columbo, and how sometimes inspiration only comes from locking yourself away in a dark room to think. Blending science with history, biography with myth, Villani conjures up an inimitable cast of characters including the omnipresent Einstein, mad genius Kurt Godel, and Villani's personal hero, John Nash. Bir...

  8. A Transmedia Topology of 'Making a Murderer'

    Directory of Open Access Journals (Sweden)

    Alan Hook

    2016-12-01

    Full Text Available This article constructs a transmedia topology of the Making a Murderer text, demonstrating influences of various forms of documentary, interactive gaming culture, and post-digital writing on the series itself as well as on the paratextual cloud of works that grew up around it. Here we define transmedia topology as a tracing of what we could call the geography of the text, as defined by its features and boundaries (or lack thereof. We will discuss the intentionality of the series creators, as well as the emergence of a transmedial textuality that is owed largely to audiences and the textual terrain. The Making a Murderer series thus becomes the basis for a larger transmedia narrative that sprawls across social-digital networks, a pastiche of multifarious public reaction and unsanctioned investigation.The article maps the ecologies of interaction, participation and creation with and of the text by the audience to map the thresholds of the transmedial text and investigate new approaches to analysing transmedial work in the context of non-fiction media forms.

  9. A reductive coupling strategy towards ripostatin A

    Directory of Open Access Journals (Sweden)

    Kristin D. Schleicher

    2013-07-01

    Full Text Available Synthetic studies on the antibiotic natural product ripostatin A have been carried out with the aim to construct the C9−C10 bond by a nickel(0-catalyzed coupling reaction of an enyne and an epoxide, followed by rearrangement of the resulting dienylcyclopropane intermediate to afford the skipped 1,4,7-triene. A cyclopropyl enyne fragment corresponding to C1−C9 has been synthesized in high yield and demonstrated to be a competent substrate for the nickel(0-catalyzed coupling with a model epoxide. Several synthetic approaches toward the C10−C26 epoxide have been pursued. The C13 stereocenter can be set by allylation and reductive decyanation of a cyanohydrin acetonide. A mild, fluoride-promoted decarboxylation enables construction of the C15−C16 bond by an aldol reaction. The product of this transformation is of the correct oxidation state and potentially three steps removed from the targeted epoxide fragment.

  10. A microtube viscometer with a thermostat

    Energy Technology Data Exchange (ETDEWEB)

    Silber-Li, Z.H. [LNM, Institute of Mechanics, Chinese Academy of Sciences, 15, Bei Si Huan Xi Lu, 100080, Beijing (China); Tan, Y.P. [LNM, Institute of Mechanics, Chinese Academy of Sciences, 15, Bei Si Huan Xi Lu, 100080, Beijing (China); Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, 200072, Shanghai (China); Weng, P.F. [Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, 200072, Shanghai (China)

    2004-04-01

    The viscometer presented in this paper is suitable for measuring the viscosity of liquids in micro-litre quantities. It consists of a micro-flow experimental system with a thermostat. Using the measurements of the flow rates and pressure drops of a liquid passing through a microtube, the liquid's viscosity can be calculated from on Hagen-Poiseuille theory. After calibration, the viscometer was used to measure viscosities of deionized water and ethyl alcohol at temperatures ranging from 0 to 40 C. For both test liquids, the relative deviation of the measured values from those quoted in the literature (obtained using other viscometers) was less than 2.6%. The relative uncertainty of the experimental system was reduced to {+-}1.8% using the relative measuring method. Due to the micro-scale of the test section, only a micro-litre quantity of liquid is needed for a test; this is a potential advantage for measurement of bio-liquid viscosities. (orig.)

  11. [Utilities: a solution of a decision problem?].

    Science.gov (United States)

    Koller, Michael; Ohmann, Christian; Lorenz, Wilfried

    2008-01-01

    Utility is a concept that originates from utilitarianism, a highly influential philosophical school in the Anglo-American world. The cornerstone of utilitarianism is the principle of maximum happiness or utility. In the medical sciences, this utility approach has been adopted and developed within the field of medical decision making. On an operational level, utility is the evaluation of a health state or an outcome on a one-dimensional scale ranging from 0 (death) to 1 (perfect health). By adding the concept of expectancy, the graphic representation of both concepts in a decision tree results in the specification of expected utilities and helps to resolve complex medical decision problems. Criticism of the utility approach relates to the rational perspective on humans (which is rejected by a considerable fraction of research in psychology) and to the artificial methods used in the evaluation of utility, such as Standard Gamble or Time Trade Off. These may well be the reason why the utility approach has never been accepted in Germany. Nevertheless, innovative concepts for defining goals in health care are urgently required, as the current debate in Germany on "Nutzen" (interestingly translated as 'benefit' instead of as 'utility') and integrated outcome models indicates. It remains to be seen whether this discussion will lead to a re-evaluation of the utility approach.

  12. Tesla - A Flash of a Genius

    Science.gov (United States)

    Teodorani, M.

    2005-10-01

    This book, which is entirely dedicated to the inventions of scientist Nikola Tesla, is divided into three parts: a) all the most important innovative technological creations from the alternate current to the death ray, Tesla research in fundamental physics with a particular attention to the concept of "ether", ball lightning physics; b) the life and the bright mind of Nikola Tesla and the reasons why some of his most recent findings were not accepted by the establishment; c) a critical discussion of the most important work by Tesla followers.

  13. A woman with a dangling digit.

    Science.gov (United States)

    Roesch, Alexander; Kinner, Bernd; Schaechinger, Ulrich; Obermann, Ellen C; Landthaler, Michael; Hohenleutner, Ulrich

    2007-11-01

    Ainhum (dactylolysis spontanea) is a distinct clinical and radiological disorder of dark-skinned people characterized by a progressive development of a constricting band encircling the toe which usually results in spontaneous amputation. Ainhum mainly occurs in African natives, but in times of global migration and tourism, Ainhum is likely to be more often encountered outside Africa. Even though the clinical presentation can mimic more common entities such as arthritis and trauma, the correct diagnosis and treatment is easy if one knows this unusual entity.

  14. Dialog between a Lexicographer and a Translator

    Directory of Open Access Journals (Sweden)

    Mark Kit

    2015-06-01

    Full Text Available Dialog between a Lexicographer and a Translator The discussion between the authors of the paper concerns the most pressing issues encountered in natural language semantics, as well as in corpus linguistics and computational linguistics. A broad range of knowledge, allowing linguists and information scientists to work together, is required in these areas. The paper describes some primary problems of human and machine translation caused by gaps between different fields of knowledge. The authors suggest that interdisciplinary approach is required when it comes to contrastive studies in linguistics.

  15. Locating a circle on a sphere

    DEFF Research Database (Denmark)

    Brimberg, Jack; Juel, Henrik; Schöbel, Anita

    2007-01-01

    We consider the problem of locating a spherical circle with respect to existing facilities on a sphere, such that the sum of distances between the circle and the facilities is minimized or such that the maximum distance is minimized. The problem properties are analyzed, and we give solution...... procedures. When the circle to be located is restricted to be a great circle, some simplifications are possible. The models may be used in preliminary studies on the location of large linear facilities on the earth's surface, such as superhighways, pipelines, and transmission lines, or in totally different...

  16. A certain ambiguity a mathematical novel

    CERN Document Server

    Suri, Gaurav

    2010-01-01

    While taking a class on infinity at Stanford in the late 1980s, Ravi Kapoor discovers that he is confronting the same mathematical and philosophical dilemmas that his mathematician grandfather had faced many decades earlier--and that had landed him in jail. Charged under an obscure blasphemy law in a small New Jersey town in 1919, Vijay Sahni is challenged by a skeptical judge to defend his belief that the certainty of mathematics can be extended to all human knowledge--including religion. Together, the two men discover the power--and the fallibility--of what has long been considered the pinn

  17. Aproximaciones a la Econometría

    OpenAIRE

    Espasa, Antoni

    1994-01-01

    En la concepción de la Econometría pueden adoptarse básicamente dos tipos de enfoques, que corresponden a dos formas distintas de concebir esta disciplina. Esta nota se hace eco de los comentarios críticos que la orientación econométrica basada en el supuesto de que las relaciones económicas son exactas ha recibido en la literatura, y se alinea en la corriente econométrica que se ha venido desarrollando a partir del trabajo pionero de Haavelmo (1944). Sobre esta publicación se puede decir, ut...

  18. A case study, Bagnoli: a difficult transition

    Directory of Open Access Journals (Sweden)

    Maria Antonietta Selvaggio

    2015-01-01

    In this research work we intend to verify how a particular physical-spatial dimension has influenced the social relations and the same identities of the people and their “community”, how we can delineate the perception and the performance of a urban transformation largely failed, and which contribution the citizens of Bagnoli can give to the urban design through their own imaginary and meanings they ascribe to their environment (Lynch 1960. In this sense, the study aim at giving a contribution to the participative practice, that up to now is out of the transition dynamics.

  19. A mathematical model for a gaming community

    CERN Document Server

    Breban, Romulus

    2016-01-01

    We consider a large community of individuals who mix strongly and meet in pairs to bet on a coin toss. We investigate the asset distribution of the players involved in this zero-sum repeated game. Our main result is that the asset distribution converges to the exponential distribution, irrespective of the size of the bet, as long as players can never go bankrupt. Analytical results suggests that the exponential distribution is a stable fixed point for this zero-sum repreated game. This is confirmed in numerical experiments.

  20. A Planck Vacuum Cosmology

    Directory of Open Access Journals (Sweden)

    Daywitt W. C.

    2009-04-01

    Full Text Available Both the big-bang and the quasi-steady-state cosmologies originate in some type of Planck state. This paper presents a new cosmological theory based on the Planck- vacuum negative-energy state, a state consisting of a degenerate collection of negative- energy Planck particles. A heuristic look at the Einstein field equation provides a con- vincing argument that such a vacuum state could provide a theoretical explanation for the visible universe.

  1. Guide for a typewriter

    Science.gov (United States)

    Dubois, R. D.; Pinson, G. T. (Inventor)

    1976-01-01

    The invention relates to accessories for typewriters, and more particularly to an improved guide for use in aligning a sheet of paper preparatory to an application of typed indicia to selected spaces. The device includes an aligning plate pivotally mounted on a line guide having formed therein a plurality of aligned apertures. The plate is so positioned that an aperture is positioned immediately above a target area for a type slug so that a slug will imprint a character in selected spaces.

  2. The information a history, a theory, a flood

    CERN Document Server

    Gleick, James

    2011-01-01

    Winner of the Royal Society Winton Prize for Science Books 2012, the world's leading prize for popular science writing. We live in the information age. But every era of history has had its own information revolution: the invention of writing, the composition of dictionaries, the creation of the charts that made navigation possible, the discovery of the electronic signal, the cracking of the genetic code. In 'The Information' James Gleick tells the story of how human beings use, transmit and keep what they know. From African talking drums to Wikipedia, from Morse code to the 'bit', it is a fascinating account of the modern age's defining idea and a brilliant exploration of how information has revolutionised our lives.

  3. Harry Minti- a project for a book

    Science.gov (United States)

    Gaina, Alex

    2011-08-01

    A short biography and an account of scientific research of the Associated Professor of the Hebrew University in Jerusalem (Israel), Dr. Harry Minti (b. 1938, Bucharest) is given. His activity as translator was also mentioned.

  4. A Subdermal Osteochondroma in a Young Girl

    Science.gov (United States)

    Correa, Hernan

    2017-01-01

    Osteochondromas are common benign tumors of cartilage and bone. They are usually found as contiguous bone with a cartilage cap at the end of the growth plate of long bones. Similar to structure are extraskeletal osteochondromas. However, unlike typical osteochondromas, extraskeletal osteochondromas are noncontinuous with bone. To our knowledge, all reported extraskeletal osteochondromas have been contained within fascial compartments. Here we present the case of a 5-year-old female who had a slow growing mass of the anterior distal right thigh. Imaging studies revealed an ossified mass extending from dermal layer of the subcutaneous tissue with no connection to the underlying deep fascia. An excisional biopsy was performed and proved to be a subdermal extraskeletal osteochondroma. PMID:28133559

  5. Schizandrol A: a lignan from Schisandra chinensis

    Directory of Open Access Journals (Sweden)

    Liang Zhao

    2008-08-01

    Full Text Available The title compound (systematic name: 1,2,3,10,11,12-hexamethoxy-6,7-dimethyl-5,6,7,8-tetrahydrodibenzo[a,c]cycloocten-6-ol, C24H32O7, has a dibenzocyclooctadiene skeleton. There are three molecules in the asymmetric unit, which are related by a pseudo-translation in the direction of the c axis. Nevertheless, the three molecules differ in the torsion angle of one of the methoxy groups. The dihedral angles between the two aromatic rings are 62.39 (10, 62.65 (10 and 61.84 (10° for the three molecules. The crystal packing is stabilized by a series of O—H...O and C—H...O hydrogen bonds, as well as C—H...π interactions.

  6. Regenerating a kidney in a lymph node.

    Science.gov (United States)

    Francipane, Maria Giovanna; Lagasse, Eric

    2016-10-01

    The ultimate treatment for end-stage renal disease (ESRD) is orthotopic transplantation. However, the demand for kidney transplantation far exceeds the number of available donor organs. While more than 100,000 Americans need a kidney, only 17,000 people receive a kidney transplant each year (National Kidney Foundation's estimations). In recent years, several regenerative medicine/tissue engineering approaches have been exploited to alleviate the kidney shortage crisis. Although these approaches have yielded promising results in experimental animal models, the kidney is a complex organ and translation into the clinical realm has been challenging to date. In this review, we will discuss cell therapy-based approaches for kidney regeneration and whole-kidney tissue engineering strategies, including our innovative approach to regenerate a functional kidney using the lymph node as an in vivo bioreactor.

  7. Can a Humean be a Contractarian?

    Directory of Open Access Journals (Sweden)

    Robert Sugden

    2009-01-01

    Full Text Available In this paper I argue, contrary to Hartmut Kliemt, that it is possible to be both a Humean and, in James Buchanan's sense, a contractarian. Hume sees principles of justice and political allegiance not as actual or hypothetical products of explicit agreement, but as conventions that have emerged spontaneously. However, it is fundamental to Hume's analysis that conventions are mutually advantageous, and hence cognate with agreements. The core idea in Buchanan's contractarianism is that the proper role of government is to implement voluntary exchanges between individuals, not to define and maximise a unified conception of social welfare. Although real politics cannot be based entirely on unanimous agreement, the voluntary exchange approach provides a valuable structure for normative economics.

  8. Umbanda: entre a cruz e a encruzilhada

    Directory of Open Access Journals (Sweden)

    LÍSIAS NOGUEIRA NEGRÃO

    1993-12-01

    Full Text Available O artigo considera a umbanda, religião afro-brasileira de constituição recente, como estando dividida entre os apelos de suas raízes negras e os atrativos legitimadores da adoção dos princípios éticos cristãos. Embora pouco racionalizada e postulando uma visão de mundo predominantemente encantada, vem crescentemente moralizando-se a partir, sobretudo, das influências do ideal kardecista da caridade. Tal incorporação não é, contudo, linear, mas reinterpretada a partir da vivência concreta de seus agentes e moderada pela necessidade da cobrança por serviços religiosos prestados e pela "demanda", concepção mágica de conflito inter-individual.

  9. What Makes a Wetland a Wetland?

    Science.gov (United States)

    Naturescope, 1986

    1986-01-01

    Provides descriptions of and activities about various kinds of wetlands. Contains seven learning activities ranging from creating wetland scenes with picture cutouts to actually exploring a wetland. Includes reproducible handouts and worksheets for several of the activities. (TW)

  10. Triple A Syndrome: A Case Report

    Directory of Open Access Journals (Sweden)

    Murat Atmaca

    2014-09-01

    Full Text Available Triple A syndrome is a rarely seen autosomal recessive disease characterized by achalasia, adrenal failure and alacrima. The syndrome is frequently seen in childhood. The appearance of its components are usually ordered as alacrima, achalasia and adrenal failure. The majority of the patients diagnosed in the later stages predominantly present with neurological symptoms. In this study, a 21-year-old male who was referred to our clinic with clinical findings of chronic adrenal failure and was diagnosed WİTH triple A syndrome is presented. This patient had been operated three years ago due to achalasia. The diagnosis and treatment of adrenal failure in this syndrome is the most important determinant and indicator in the prognosis of the disease. Turk Jem 2014; 18: 97-99

  11. Pseudomyrmex nigropilosa: A Parasite of a Mutualism.

    Science.gov (United States)

    Janzen, D H

    1975-05-30

    Pseudomyrmex nigropilosa is a parasite ofthe ant-acacia mutualism in Central America in that it harvests the resources of swollen-thorn acacias but does not protect the acacias. In the process, it also lowers the rate of occupation by the obligate acacia-ants, species of ants that do protect swollen-thorn acacias. Tenancy ofan acacia by P. nigropilosa must be temporary, since the unoccupied plant is shortly killed by herbivores or competing plants, or is taken over by obligate acacia-ants. As expected of a species of short-lived ant, a P. nigropilosa colony produces reproductives earlier in the life of the colony and maintains fewer grams of workers per gram of brood than does a colony of the long-lived obligate acacia-ants.

  12. A thing finished is a thing dead

    DEFF Research Database (Denmark)

    Baumeister, Ruth

    2014-01-01

    The article gives a general overview of Asger Jorn´s position in architecture. Besides his theoretical stands, it exemplifies his position by showing the artist´s private house and garden in Albissola, Italy....

  13. A teahouse in a tea garden

    OpenAIRE

    Macfarlane, Alan

    2004-01-01

    The Japanese place tea at the centre of their social and ceremonial life. In this beautiful tea garden in Kyoto, the tea mistress makes tea and offers it to Alan Macfarlane, who talks a little about its role in history.

  14. Packing a cake into a box

    CERN Document Server

    Skopenkov, Mikhail

    2010-01-01

    Given a cake in form of a triangle and a box that fits the mirror image of the cake, how to cut the cake into a minimal number of pieces so that it can be put into the box? The cake has an icing, so that we are not allowed to put it into the box upside down. V.G. Boltyansky asked this question in 1977 and showed that three pieces always suffice. In this paper we provide examples of cakes that cannot be cut into two pieces to put into the box. This shows that three is the answer to V.G. Boltyansky's question. Also we give examples of cakes which can be cut into two pieces.

  15. A blackbody is not a blackbox

    CERN Document Server

    Smerlak, Matteo

    2010-01-01

    We discuss carefully the blackbody approximation, stressing what it is (a limit case of radiative transfer), and what it is not (the assumption that the body is perfectly absorbing, i.e. black). Furthermore, we derive the Planck spectrum without enclosing the field in a box, as is done in most textbooks. Athough convenient, this trick conceals the nature of the idealization expressed in the concept of a blackbody: first, the most obvious examples of approximate blackbodies, stars, are definitely not enclosed in boxes; second, the Planck spectrum is continuous, while the stationary modes of radiation in a box are discrete. Our derivation, although technically less elementary, is conceptually more consistent, and brings the opportunity to introduce to students the important concept of local density of states, via the resolvent formalism.

  16. A blackbody is not a blackbox

    Science.gov (United States)

    Smerlak, Matteo

    2011-09-01

    We discuss carefully the blackbody approximation, stressing what it is (a limit case of radiative transfer), and what it is not (the assumption that the body is perfectly absorbing, namely black). Furthermore, we derive the Planck spectrum without enclosing the field in a box, as is done in most textbooks. Although convenient, this trick conceals the nature of the idealization expressed in the concept of a blackbody: first, the most obvious examples of approximate blackbodies, stars, are definitely not enclosed in boxes; second, the Planck spectrum is continuous, while the stationary modes of radiation in a box are discrete. Our derivation, although technically less elementary, is conceptually more consistent, and brings the opportunity to introduce to advanced undergraduate and graduate students the important concept of the local density of states via the resolvent formalism.

  17. A wave lab inside a coaxial cable

    Science.gov (United States)

    Serra, João M.; Brito, Miguel C.; Alves, J. Maia; Vallera, A. M.

    2004-09-01

    The study of electromagnetic wave propagation in a coaxial cable can be a powerful approach to the study of waves at an undergraduate level. This study can explore different experimental situations, going from those where the finite velocity of propagation must be considered (distributed or transmission line behaviour), to those where this velocity may be considered infinite (lumped behaviour). We believe that the student observation of the existence of these two regimes can be important for the understanding of wave phenomena in general. In this work we show that this can be achieved using low-cost equipment and a set of quite simple experiments, such as the measurement of wave propagation velocity or the study of standing waves and resonance. The results obtained in a coherent set of selected experiments are discussed.

  18. Life of a Tooth: A Visual Timeline

    Medline Plus

    Full Text Available ... About | Contact InfoBites Quick Reference Learn more Children's Oral Health Men: Looking for a Better Job? Start by Visiting the Dentist Why is Oral Health Important for Men? Headaches and Jaw Pain? Check ...

  19. Gingivectomía a bisel externo

    OpenAIRE

    Teresita Burgos Fuentes; Diana Marcela Palomino Romero; Antonio Díaz Caballero

    2014-01-01

    ResumenEl propósito de este reporte es describir el alargamiento coronario como tratamiento estético periodontal. La gingivectomía es un tratamiento quirúrgico antiguo. La indicación para la gingivectomía es la eliminación completa de la bolsa periodontal, hiperplasias. El diseño fisiológico del margen libre gingival por el medio quirúrgico debe ser tomado en consideración. Se reporta un caso clínico de un paciente masculino de 32 años de edad que exhibe gran cantidad de encía cuando sonríe. ...

  20. Can a dike "feel" a free surface?

    Science.gov (United States)

    Pansino, S.; Taisne, B.

    2015-12-01

    This study uses analogue experiments to examine the various factors that could influence the dynamic or arrest of a dike prior to an eruption. Dike propagation has been well-studied from the perspective of analogue experiments and it has been shown how various competing forces interact (buoyancy, viscosity, elastic properties, fracture toughness,…). It has been observed that dikes experience acceleration as they approach a free surface, which theoretically is due to increasing stress intensity as distance to the free surface decreases. Other unrelated studies analysed the constant-volume propagation of low-surface-energy liquids (e.g. hydrophilic liquids) in a semi-infinite medium and found the propagation rate to decelerate, as liquid gradually transferred from the head region to the tail and buoyancy abated. In contrast, high-surface-energy fluids transfer negligible quantities of their volume into the tail region, essentially maintain their volume, and experience no such deceleration. This study focuses on the aforementioned factors influencing dike propagation, acceleration due to a free surface and deceleration due to head volume loss, to determine what their combined effect is on magma eruptability. As previous studies used hydrophobic liquids to investigate free-surface effects, and as magma is expected to have a low surface energy with the crust (they are both silicate), hydrophilic liquids (e.g. glucose syrup) are used in this study. Each experiment is arranged to have a free surface condition occupying half of the apparatus, and a no-slip condition occupying the other half, which allows for side-by-side comparison. The results are analysed to determine the minimum volume needed for a dike to erupt; failure to erupt implies that the dike would instead come to arrest in the crust.

  1. Ventana a la farmacología

    OpenAIRE

    Revista Facultad de, Medicina

    2012-01-01

    Aspirina para prevenir el ataque cardiaco o apoplético / Alteraciones fetales causados por los inhibidores de la enzima de conversión de la angiotensina (eca) / Efectos teratogénicos de los derivados de la vitamina a / Efectos teratogénicos de la warfarina / Algunos avances en farmacología en la última década / ¿Anticonceptivos que previenen el cáncer de seno?

  2. What makes a movement a gesture? ☆

    OpenAIRE

    Novack, Miriam A.; Wakefield, Elizabeth M.; Goldin-Meadow, Susan

    2015-01-01

    Theories of how adults interpret the actions of others have focused on the goals and intentions of actors engaged in object-directed actions. Recent research has challenged this assumption, and shown that movements are often interpreted as being for their own sake (Schachner & Carey, 2013). Here we postulate a third interpretation of movement—movement that represents action, but does not literally act on objects in the world. These movements are gestures. In this paper, we describe a framewor...

  3. A Reality Check on a Cyber Force

    Science.gov (United States)

    2016-07-01

    policy and global affairs at the Air Force Re- search Institute. His research interests include the intersection of cyberspace and global security. He...holds PhD and MS degrees in global affairs from Rutgers University and an ALB degree in philosophy from Harvard University. A Reality Check on a Cyber...mili- tary strategy and doctrine as an operational domain in which to orga- nize, train, and equip forces to ensure it has the necessary capabilities

  4. Malaria vaccine: A myth or a reality

    OpenAIRE

    Sarita Mohapatra

    2013-01-01

    Malaria is a common parasitic disease caused by Plasmodium spp. and transmitted by anopheles mosquito. Every year several million people are affected and killed due to this infection in the endemic regions of the world. Recently, drug resistance to the common antimalarial drugs has pressurized upon the development of an effective vaccine for the elimination of malaria along with other control measures. A number of vaccine trials are in the pipeline. Indeed, some were proven to have potential ...

  5. A note on a walrus’ European odyssey

    Directory of Open Access Journals (Sweden)

    E W Born

    2014-02-01

    Full Text Available This study reports on the first successful identification of the site of origin of an extralimital walrus in Europe. On 24 February 2010 an adult male Atlantic walrus (Odobenus rosmarus rosmarus migrant was instrumented with a SPOT-5 satellite-linked transmitter (SLT while hauled out on a beach on the Faroe Islands at 62° 15' N/06° 32' W. This SLT transmitted until 5 March during which period the walrus made local movements, likely for feeding. Transmissions were not received during 6-25 March, however, visual observations during this time indicated that the walrus remained at the Faroe Islands. A second transmitter was deployed on the same animal on 25 March 2010 at another site on the islands (62° 16' N/07° 04' W. Activity data collected over 13 days indicated that the walrus hauled out in three different places in the Faroe Islands and used a total of 24% of its time resting on land.  On 29 March 2010 the walrus left the Faroe Islands and headed WNW towards NE Iceland. On 2 April it took a NNE course and swam towards Svalbard where the last location was received from a sea ice covered area on 25 April 2010 at 78° 27' N/09° 20' E (i.e. ca. 40 km west of the island of Prins Karls Forland in the western Svalbard archipelago. During 29 March-22 April the walrus swam a minimum distance of 2216 km between the last location at the Faroe Islands and the first location at Svalbard, with an average swimming speed of 4.5 km/h. A genetic analysis indicated that this walrus belonged to the Svalbard-Franz Josef Land subpopulation, thereby confirming that it returned to its site of origin.

  6. A Deep Chandra Observation of A2052

    Science.gov (United States)

    Blanton, E. L.; Douglass, E. M.; Sarazin, C. L.; Clarke, T. E.; McNamara, B. R.

    We present initial results from a long (125 ksec) Chandra observation of Abell 2052. A2052 is a bright, nearby, cooling core cluster at a redshift of z=0.0348. It was previously observed for 36 ksec with Chandra [3,4]. The longer observation reveals ripples in the surface brightness, similar to what has been seen in e.g., the Perseus cluster [5] and M87/Virgo [6]. The southern cavity now appears to be split into two cavities with the southernmost cavity likely representing a ghost bubble from earlier radio activity. There also appears to be a ghost bubble present to the NW of the cluster center. Bright emission in the X-ray corresponds very well with optical line emission, and the correlated X-ray emission is seen to continue from the N bubble edge closer to the AGN in this longer exposure, tracking the H-α emission. The energy deposited by the radio source, as determined by measuring the pressure in the bright, X-ray shells, averaged over the repetition rate of the radio source (determined from either the ripple separation or the ghost cavity distances) can easily offset the cooling in the core of the cluster.

  7. De Analogía a Digitalia

    Directory of Open Access Journals (Sweden)

    Dr. Xaime Fandiño Alonso

    2001-01-01

    Full Text Available La transformación hacia la tecnología numérica ha provocado en el último decenio cambios importantes en los entornos de creación, operación, transformación y distribución de productos audiovisuales.Los restos de la era analógica están dando sus últimos estertores de la mano de unos entornos digitales, desarrollados velozmente.Estos nuevos equipos son en la mayoría de los casos prototipos. La velocidad del mercado, la competencia, las joint-ventures..., no permiten ningún tipo de relajo a las empresas tecnológicas que participan en esta carrera desenfrenada de competitividad.Las maquinarias dedicadas a procesos puntuales, cada vez más, son historias para el recuerdo. Hoy todo es efímero y la tecnología de antaño basada en equipos mecánicos (magnetoscopios..., plataformas y soportes lineales (cintas... están abocados a la desaparición.Conceptos de solvencia empresarial tales como "los grandes y los pequeños", utilizados en otros ámbitos de la industria, son en el sector audiovisual cada vez más delicados. En los diarios económicos podemos leer cómo, con cierta asiduidad, empresas muy posicionadas en el sector se ven abocadas a establecer fusiones, compras y participaciones, con pequeñas células de creación y desarrollo que surgen de la creatividad de jóvenes emprendedores, hasta ayer desconocidos.La era digital está corriendo un enorme telón y deja atrás, por suerte, una etapa analógica en la que la posesión de los medios de producción, debido a sus costes, era motivo suficiente para negar la participación y el acceso, a equipos tecnológicos audiovisuales de carácter profesional, a los creadores.Hoy, lo digital proporciona nuevos sistemas con entornos productivos más amables a la vez que reduce considerablemente coste de los equipamientos. En este momento, despojados ya de los inconvenientes analógicos, el talento es el verdadero motor de la industria audiovisual, en un sector que aglutina tecnología

  8. A Design for a Quantum Time Machine

    CERN Document Server

    Gray, A

    1998-01-01

    In the new ``History Selection'' formulation of Quantum Mechanics an entire cosmic history is selected over all space and time, with a probability for selection assigned to each possible history. As this probability depends on the whole history, and is not merely composed of the product of probabilities for each step in the history, the theory is not a causal theory. It shall be shown that this violation of causality is usually completely unobservable and confined to the microscopic world, occurring inbetween ``observations''. However it shall also be shown that in certain special circumstances it is possible to exploit the intrinsic non-causal nature of the theory to violate causality at the macroscopic level. A practical design for a device which can exploit this effect is shown. Such a device would effectively enable one to see into the future, and is thus a kind of time machine. Finally it shall be shown that, according to this new formulation of Quantum Mechanics, this does not give rise to any unpleasan...

  9. Worldviews: A blessing or a curse?

    Directory of Open Access Journals (Sweden)

    Bert Olivier

    2012-10-01

    Full Text Available The concept of a worldview resonates with other concepts, such as those of ‘culture’, ‘civilisation’, and ‘way of life’. Arguably, it is a modern phenomenon, the possibility of which was actualised at the dawn of the modern epoch. Nevertheless, in principle, its ‘possibility’ goes back as far as Plato’s Republic. It is Heidegger, however, who is most informative for understanding what a worldview is, as well as why the modern epoch is its time of provenance. Consequently, an analysis of Heidegger’s essay, ‘The time of the world picture’ (or worldview provided the framework within which it was argued that worldviews are both blessings and curses in the current era: blessings, because, as Harries has argued, we have been disabused of the modern idea of one encompassing worldview or ideology, so that one can no longer believe in only a single ’correct’ view of the world; curses, because they bedevil any wellintended attempts at communicating with understanding on issues of common concern. It was the burden of this article to provide a way of addressing this state of affairs with some hope of transcending the causes of alienation and it is again Heidegger who is the source of such a way, through his notion of the ‘fourfold’.

  10. A proposal of a local modified QCD

    CERN Document Server

    de Oca, Alejandro Cabo Montes

    2012-01-01

    A local and renormalizable version of a modified PQCD introduced in previous works is presented. The construction indicates that it could be equivalent to massless QCD. The case in which only quark condensate effects are retained is discussed in more detail. Then, the appearing auxiliary fermion fields can be integrated leading to a theory with the action of massless QCD, to which one local and gauge invariant Lagrangian term for each quark flavour is added. These terms are defined by two gluon and two quark fields, in a form curiously not harming power counting renormalizability. The gluon self-energy is evaluated in second order in the gauge coupling and all orders in the new quark couplings, and the result became transversal as required by the gauge invariance. The vacuum energy was calculated in the two loop approximation and also became gauge parameter independent. The possibilities that higher loop contributions to the vacuum energy allow the generation of a quark mass hierarchy as a flavour symmetry br...

  11. A leitura: um passaporte para a vida

    Directory of Open Access Journals (Sweden)

    Armindo Teixeira Mesquita

    2011-06-01

    Full Text Available Nas sociedades actuais, a capacidade para usar material escrito é indispensável ao acesso a todo tipo de informação, tornando o uso da leitura cada vez mais necessário à participação real do cidadão em actividades produtivas e colectivas, porque ajuda a formar seres pensantes. O contacto com os livros deve ser iniciado o mais cedo possível, não só pelo manuseio, como também pela história contada ou pelos jogos rítmicos. Com efeito, na idade da infância, toda a energia do indivíduo é dirigida para a construção da sua identidade. Logo, as primeiras leituras entram no período da formação e da fundação, isto é, consignamos à leitura uma grande força de desenvolvimento pessoal. Os livros, para além de auxiliares na aprendizagem do mundo, formam o leitor no gosto. Formar o gosto e possibilitar escolhas são realidades fundamentais na vida adulta.

  12. A tribute to Peter A. Rona: A Russian Perspective

    Science.gov (United States)

    Sagalevich, Anatoly; Lutz, Richard A.

    2015-11-01

    In July 1985 Peter Rona led a cruise of the National Oceanic and Atmospheric Administration (NOAA) ship Researcher as part of the NOAA Vents Program and discovered, for the first time, black smokers, massive sulfide deposits and vent biota in the Atlantic Ocean. The site of the venting phenomena was the Trans-Atlantic Geotraverse (TAG) Hydrothermal Field on the east wall of the rift valley of the Mid-Atlantic Ridge at 26°08‧N; 44°50‧W (Rona, 1985; Rona et al., 1986). In 1986, Peter and an international research team carried out multidisciplnary investigations of both active and inactive hydrothermal zones of the TAG field using the R/V Atlantis and DSV Alvin, discovering two new species of shrimp (Rimicaris exoculata and Chorocaris chacei) (Williams and Rona, 1986) and a hexagonal-shaped form (Paleodictyon nodosum) thought to be extinct (Rona et al., 2009). In 1991 a Russian crew aboard the R/V Akademik Mstislav Keldysh, with two deep-diving, human-occupied submersibles (Mir-1 and Mir-2) (Fig. 1), had the honor of having Peter Rona and a Canadian IMAX film crew from the Stephen Low Company on board to visit the TAG hydrothermal vent field. This was the first of many deep-sea interactions between Russian deep-sea scientists and their colleagues from both the U.S. and Canada. This expedition to the TAG site was part of a major Russian undersea program aimed at exploring extreme deep-sea environments; between 1988 and 2005, the Mir submersibles visited hydrothermal vents and cold seep areas in 20 deep-sea regions throughout the world's oceans (Sagalevich, 2002). Images of several of these areas (the TAG, Snake Pit, Lost City and 9°50‧N vent fields) were obtained using an IMAX camera system emplaced for the first time within the spheres of the Mir submersibles and DSV Alvin in conjunction with the filming of science documentaries (e.g., "Volcanoes of the Deep Sea") produced by the Stephen Low Company in conjunction with Emory Kristof of National Geographic and

  13. A sabedoria da democracia

    Directory of Open Access Journals (Sweden)

    Gilson Matilde Diana

    2010-01-01

    Full Text Available http://dx.doi.org/10.5007/1677-2954.2010v9n1p131Durante a maior parte da história, a democracia foi desprezada como uma forma política inferior – a regra do povo, ou “dos muitos”, era logo identificada como a regra da ralé, da escória. Herdando do povo a volubilidade e a instabilidade, a democracia estava sempre perigosamente próxima do arbítrio e da anarquia, com toda a violência que se costuma associar a isso.

  14. Dial-a-Ride

    OpenAIRE

    2003-01-01

    The Dial-a-Ride problem is a Vehicle Routing problem in its most general form. The problem was formulated in the beginning of the 1970's and since then a large number of researchers have worked on developing efficient algorithms for use in automated planning of Dial-a-Ride transportation systems. In a Dial-a-Ride transportation system, passengers request a trip between two stops with either a desired time of departure from the pickup stop or a desired time of arrival at the destination. The t...

  15. A Fat strange Repeller

    Institute of Scientific and Technical Information of China (English)

    申影; 何阅; 姜玉梅; 何大韧

    2004-01-01

    This article reports an observation on a fat strange repeller, which appears after a characteristic crisis observed in a kicked rotor subjected to a piecewise continuous force field. The discontinuity border in the definition range of the two-dimensional mapping, which describes the system, oscillates as the discrete time develops. At a threshold of a control parameter a fat chaotic attractor suddenly transfers to a fat transient set. The strange repeller, which appears after the crisis, is also a fat fractal. This is the reason why super-transience happens

  16. Epilepsy is a disease!

    Directory of Open Access Journals (Sweden)

    Walter Oleschko Arruda

    1994-12-01

    Full Text Available According to the definition of disease, epilepsy shall not be considered neither a symptom nor a syndrome. Epilepsy is a generic term for a group of diseases characterized by seizures. It implies a state quite distinct from health. Therefore it seems worthy to keep epilepsy as such in the International Classification of Diseases (ICD.

  17. A Night's Sleep, Ultracheap

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ You tote your own luggage, the bed's a bit stiff, and the decor in the spartan rooms and lobby is reminiscent of a college dorm. Oh-and you can't buy a beer. But for $22 a night,the indi One Hotel is one heck of a bargain.

  18. A Montessori Odyssey

    Science.gov (United States)

    Hanson, Peter

    2013-01-01

    Forty years ago, Peter Hanson decided to attend the 38th Indian Montessori Training Course. In this article he describes himself as a college-educated generalist who liked kids but was working for little more than minimum wage as a delivery boy. Becoming a teacher in an alternative school seemed like a good move, and a step up without…

  19. [A peripheral osteoma].

    NARCIS (Netherlands)

    Mizbah, K.; Soehardi, A.; Maal, T.J.J.; Weijs, W.L.J.; Merkx, M.A.W.; Barkhuysen, R.

    2012-01-01

    A 43-year-old man appeared with a painless, asymptomatic swelling on the left side of his neck, which had existed for years and had slowly been progressing. After surgical removal, it became clear that it had to do with a peripheral osteoma. This is a benign lesion with a low incidence. Generally, c

  20. Designing a Weather Station

    Science.gov (United States)

    Roman, Harry T.

    2012-01-01

    The collection and analysis of weather data is crucial to the location of alternate energy systems like solar and wind. This article presents a design challenge that gives students a chance to design a weather station to collect data in advance of a large wind turbine installation. Data analysis is a crucial part of any science or engineering…

  1. Smile: A review.

    Science.gov (United States)

    Manjula, W S; Sukumar, M R; Kishorekumar, S; Gnanashanmugam, K; Mahalakshmi, K

    2015-04-01

    "Beauty is in the mind of the beholder, each mind perceives a different beauty" famously said by writer Margeret Wolfe Hungerford. A beautiful smile is a gateway to the world. The aim of this article was to identify the criteria for designing the perfect smile. It was determined, smile design is a multifactorial process and various steps are involved in designing a radiant smile.

  2. What's a Fart?

    Science.gov (United States)

    ... dientes Video: Getting an X-ray What's a Fart? KidsHealth > For Kids > What's a Fart? Print A A A en español ¿Qué es ... How can your body make something so stinky? Farts — also called flatus (say: FLAY-tuss) or intestinal ( ...

  3. 40 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 750

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Appendix A to Subpart A of Part 750 A Appendix A to Subpart A of Part 750 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... ACT Procedures for Rulemaking Under Section 6 of the Toxic Substances Control Act Pt. 750, Subpt....

  4. A Hydrostatic Paradox Revisited

    Science.gov (United States)

    Ganci, Salvatore

    2012-01-01

    This paper revisits a well-known hydrostatic paradox, observed when turning upside down a glass partially filled with water and covered with a sheet of light material. The phenomenon is studied in its most general form by including the mass of the cover. A historical survey of this experiment shows that a common misunderstanding of the phenomenon…

  5. Writing a Movie.

    Science.gov (United States)

    Hoffner, Helen

    2003-01-01

    Explains a reading and writing assignment called "Writing a Movie" in which students view a short film segment and write a script in which they describe the scene. Notes that this assignment uses films to develop fluency and helps students understand the reading and writing connections. Concludes that students learn to summarize a scene from film,…

  6. Creating a Marketing Plan.

    Science.gov (United States)

    Sevier, Robert A.

    1989-01-01

    A guide to developing a college marketing plan defines key marketing terms, outlines the development of a plan (including institutional analysis, market research, strategy formation and execution, and program evaluation), and provides a list of important principles with which to operate a program. (MSE)

  7. Traveling Along a Zipline

    Science.gov (United States)

    2011-03-01

    and providing a one- dimensional (1D) analogy [5] to the 2D illustration of a heavy marble rolling around on a stretched rubber sheet [6]. A 1D...117–122 (1997). [3] Gruber, R.P., Gruber, A.D., Hamilton, R. and Matthews, S.M., Space curvature and the “heavy banana paradox”, Phys. Teach. 29

  8. A Causal Rhythm Grouping

    DEFF Research Database (Denmark)

    Jensen, Karl Kristoffer

    2005-01-01

    This paper presents a method to identify segment boundaries in music. The method is based on a multi-step model; first a features is measured from the audio, then a measure of rhythm is calculated from the feature, the diagonal of a self-similarity matrix is calculated, and finally the segment bo...

  9. Defining a monophyletic Cardinalini: a molecular perspective.

    Science.gov (United States)

    Klicka, John; Burns, Kevin; Spellman, Garth M

    2007-12-01

    Within the New World nine-primaried oscine assemblage, feeding morphology and behavior have long been used as a guideline for assigning membership to subgroups. For example, birds with stout, conical bills capable of crushing heavy seeds have generally been placed within the tribe Cardinalini (cardinal-grosbeaks). Many workers have tried to characterize this group more definitively, using a variety of morphological characters; however, the characters used often conflicted with one another. Previous molecular studies addressing the monophyly of Cardinalini have had only limited sampling within the group. In this study, we analyze mtDNA sequence data from all genera and 34 of the 42 Cardinalini species (sensu [Sibley, C.G., Monroe, B.L., 1990. Distribution and Taxonomy of the Birds of the World, Yale University Press, New Haven, CT]) to address the monophyly of the group and to reconstruct the most complete phylogeny of this tribe published to date. We found strong support for a redefined Cardinalini that now includes some members previously placed within Thraupini (tanagers; the genera Piranga, Habia, Chlorothraupis, and Amaurospiza) and some members previously placed within the Parulini (wood-warblers; the genus Granatellus). In addition, some genera traditionally considered members of the Cardinalini are shown to have affinities with other groups (the genera Porphyrospiza, Parkerthraustes, and Saltator). Our redefined Cardinalini contains 48 species, six more than are listed in Sibley and Monroe's (1990) taxonomy of the group. Within the nine-primaried oscine assemblage, the Cardinalini are more closely related to the Thraupini (tanagers) than they are to the Emberizini (sparrows), Parulini (wood-warblers), or Icterini (blackbirds), consistently forming a monophyletic group with Thraupini across all analyses. The reconfigured Cardinalini is comprised of five well-supported, major clades: (1) a "masked" clade (Piranga, Cardinalis, Caryothraustes, Periporphyrus, and

  10. A cidadania, o universalismo e a diferença

    Directory of Open Access Journals (Sweden)

    Paulo Manuel Costa

    2015-01-01

    Full Text Available The contemporary debate on citizenship has been dominated by three theoretical currents: liberalism, communitarianism and republicanism. It reveals different ways of conceptualising citizenship and thus a diversity of proposals for the design and organization of political institutions. In this article we intend to grasp how these theories deal with the specific issue of difference and cultural diversity. The systematization of the debate was made with reference to four thematic axes: first, the relationship to be established between the public sphere and the private sphere; as a function of this joint, which identity prevails in the political community; thirdly, what is the role assigned to political participation; and, finally, the reflexes that citizenship may have on social cohesion of the political community. The existence of a core of common values and principles is essential to the stability and cohesion of the community, but it must be able to incorporate the difference in order to develop an identity that can be shared by various cultural and ethnic groups and thus prevent exclusion, marginalization and oppression. The best way to ensure quantitative and qualitative expansion of citizenship seems to be one that promotes the participation and involvement of individuals and groups in the process of (redefinition of common values and principles that ensure life together. This process also seems to involve moving away from rigid and dogmatic readings of the liberal principles and the refusal of non-liberal claims and principles, particularly those that question the freedom of individuals against the political power and social groups.

  11. Making a Difference: a Global Geoscience Initiative

    Science.gov (United States)

    Nickless, E.

    2013-05-01

    Since 2009, an informal group, comprising four former board members of the International Year of Planet Earth, has been promoting the concept of a so-called Global Geoscientific Initiative. The GGI should: i.Be inclusive, involve a geoscience community, which is broad both in terms of discipline and nationality, and involve the social sciences; ii.Have a clear socio-economic context and global societal relevance; iii.Focus on a globally significant science theme and preferably involve global processes; iv.Attract the support of geoscientific communities, funding agencies, governments and other institutions in many countries, under the umbrella of UNESCO, ICSU and its geoscientific unions. A series of five town hall meetings have been held at which usually three invited, well-respected figures from the geoscientific community gave presentations. Those presentations were followed by discussion about the importance or otherwise of particular areas of science, and the need to engage better with legislators, policy makers, the media and the lay public. No one challenged the desirability of a large-scale programme that would attract researchers from many geoscientific disciplines and potentially involve the geo-unions. The discussions can be summarised under three broad themes: i.Mineral and hydrocarbon resources and their waste products; ii.Living with natural hazards; iii.Strategic Earth science in Africa through the Africa Alive corridors. During the course of development of the GGI, ICSU has issued a number of papers, most recently a strategic plan, covering the period 2012-2017, working parties have been undertaking foresight analysis and there have also been discussions concerning regional environmental change: human action and adaptation with the question "what does it take to meet the Belmont challenge?". The Belmont Forum brings together a number of funding agencies and could provide the resource to enable some initiative to go forward. More recently a programme

  12. Having a Healthy Pregnancy

    Science.gov (United States)

    ... Week of Healthy Breakfasts Shyness Having a Healthy Pregnancy KidsHealth > For Teens > Having a Healthy Pregnancy A ... or she can help you to get treatment. Pregnancy Discomforts Pregnancy can cause some uncomfortable side effects. ...

  13. TOXICODERMIA ASOCIADA A BENDAMUSTINA

    Directory of Open Access Journals (Sweden)

    Valdivia I

    2014-05-01

    Full Text Available Bendamustine is a cytotoxic drug used in the treatment of Chronic Lymphocytic Leukemia can cause various adverse skin reactions. We report the case of a woman who received Bendamustine and developed a skin rash

  14. A Nonideal Flow Experiment.

    Science.gov (United States)

    Gonzalez-Velasco, Juan Ramon; Elorriaga, Javier Bilbao

    1984-01-01

    Considers the deviation from the ideal flows of both a backmix tank and a backmix tank followed by a flow vessel. Background information, apparatus used, and experimental procedures are provided. Typical results are also provided and discussed. (JN)

  15. A major safety overhaul

    CERN Multimedia

    2003-01-01

    A redefined policy, a revamped safety course, an environmental project... the TIS (Technical Inspection and Safety) Division has begun a major safety overhaul. Its new head, Wolfgang Weingarten, explains to the Bulletin why and how this is happening.

  16. Checking a printed board

    CERN Multimedia

    1977-01-01

    An 'Interactive Printed Circuit Board Design System' has been developed by a company in a Member-State. Printed circuits are now produced at the SB's surface treatment workshop using a digitized photo-plotter.

  17. Preventing hepatitis A

    Science.gov (United States)

    Hepatitis A is inflammation (irritation and swelling) of the liver caused by the hepatitis A virus. You can take several steps to ... reduce your risk of spreading or catching the hepatitis A virus: Always wash your hands thoroughly after ...

  18. Dyslexia: A Survivor's Story.

    Science.gov (United States)

    Rogers, Trumbull

    1991-01-01

    A successful adult with dyslexia recounts his experiences as a child including poor school reports, emotional problems, clumsiness, as well as the help provided by a special school for boys with dyslexia. (DB)

  19. Vitamin A blood test

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003570.htm Vitamin A blood test To use the sharing features on this page, please enable JavaScript. The vitamin A test measures the level of vitamin A ...

  20. Building a Better Planet

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Transitioning into a broader role as senior civil servant of the United Nations after 37 years as a Chinese diplomat,UN Under Secretary General Sha Zukang certainly has had a tough task to quickly understand UN culture

  1. A mechanised microirrigation system.

    Science.gov (United States)

    Gould, J S; Henson, P G; Gould, S H

    1979-10-01

    A mechanised microirrigation system for microvascular surgery, which is operated by a foot pedal, utilises a large sterile reservoir, and allows control of flow rate and volume, has been designed for use in the laboratory and operating room.

  2. A semiconductor laser

    Energy Technology Data Exchange (ETDEWEB)

    Naoko, O.; Masaru, K.

    1984-04-20

    A semiconductor laser with enhanced characteristics is patented in which bleaching coatings are generated on the outcoupling mirrors by sputtering alternating coating layers made from A1203 and A10, with high and low indices of refraction.

  3. A Colorful Equatorial Wonderland

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ Papua New Guinea (PNG) is one of the least visited countries in the world... a last frontier for international travelers. PNG is a colorful equatorial wonderland as well as a living example of human's culture 1000 years ago.

  4. Decavanadate: a journey in a search of a role.

    Science.gov (United States)

    Aureliano, Manuel

    2009-11-14

    Currently, efforts have been directed towards using decavanadate as a tool for the understanding of several biochemical processes such as muscle contraction, calcium homeostasis, in vivo changes of oxidative stress markers, mitochondrial oxygen consumption, mitochondrial membrane depolarization, actin polymerization and glucose uptake, among others. In addition, studies have been conducted in order to make vanadium available and safe for clinical use, for instance with decavanadate compounds that present interesting pharmacological properties, eventually useful for the treatment of diabetes. Here, recent contributions of decavanadate to the effects of vanadium in biological systems, not only in vitro, but also in vivo, are analysed.

  5. You are not a gadget a manifesto

    CERN Document Server

    Lanier, Jaron

    2011-01-01

    A programmer, musician, and father of virtual reality technology, Jaron Lanier was a pioneer in digital media, and among the first to predict the revolutionary changes it would bring to our commerce and culture. Now, with the Web influencing virtually every aspect of our lives, he offers this provocative critique of how digital design is shaping society, for better and for worse. Informed by Lanier’s experience and expertise as a computer scientist, You Are Not a Gadget discusses the technical and cultural problems that have unwittingly risen from programming choices—such as the nature of user identity—that were “locked-in” at the birth of digital media and considers what a future based on current design philosophies will bring. With the proliferation of social networks, cloud-based data storage systems, and Web 2.0 designs that elevate the “wisdom” of mobs and computer algorithms over the intelligence and wisdom of individuals, his message has never been more urgent.

  6. Use a defibrillator, save a life

    CERN Multimedia

    Joannah Caborn Wengler

    2012-01-01

    With the work for Long Shutdown 1 looming on the horizon, the CERN Fire Brigade is anticipating a heavy workload: more people working at CERN means more call-outs. So the more trained first-aiders around to help out before the paramedics arrive, the better. Would you know what to do in a medical emergency?   It could happen at any time: two colleagues are having a coffee at work, when one suddenly clutches his or her chest and falls to the floor unconscious. What would you do? Run to find a first-aider? Call the ambulance and wait, finishing your coffee? Neither response is entirely correct. On Monday 11 June in Building 40 the CMS safety group, in collaboration with the Fire Brigade and the Medical Service, demonstrated the recommended, potentially life-saving response to cardiac arrest (see the video), including the correct use of a defibrillator, ten of which were recently installed in key CERN locations (the Bulletin reported).     “In countries where...

  7. A Review on Noma: A Recent Update.

    Science.gov (United States)

    Ashok, Nipun; Tarakji, Bassel; Darwish, Shourouk; Rodrigues, Jean C; Altamimi, Mohammad A

    2015-07-30

    Noma is a gangrenous infection primarily affecting under developed countries. The aim of this paper was to review all recent articles on noma from January 2003 to August 2014 and briefly update the latest information related to the topic. A literature search was done on PUBMED using the keywords "noma/cancrum oris". Noma is commonly seen in malnourished children. There has been an increased incidence of noma in HIV patients. Apart from these, noma has also been reported in association with cyclic neutropenia, herpetic stomatitis, leukemia, Down's syndrome and Burkett's disease. Treatment of acute noma includes transfusion of blood and intravenous fluids, administration of antibiotics, putting the patient on a high protein diet and debridement of necrotic areas. Surgical phase is usually initiated 6 to 18 months after a period of quiescence. Although, the mortality rate associated with noma has reduced significantly with the advent of modern generation antibiotics, the functional, cosmetic and psychological challenges associated with the destruction of soft or hard tissues still remains a huge challenge. Adequate steps must be implemented by the government or medical professionals to prevent the disease and provide an early intervention.

  8. Pop in a Popper

    Science.gov (United States)

    Reading Teacher, 2011

    2011-01-01

    This article describes Pop in a Popper, an effective lesson for teaching students how to choose and use words to give their writing fluency and flair. Pop in a Popper introduces the appositive: a group of words inserted after a noun to modify that noun. In simplest terms, writers pop this group of words into a sentence to tell more about a noun.…

  9. 'A Place to Sit'

    DEFF Research Database (Denmark)

    Hvejsel, Marie Frier; Klok, Julie Skovgaard; Bøhnke, Mia Marker

    Published in 2014 on the occasion of the third 'A Place to Sit' exhibition as a reflection upon three years of teaching tectonic method in architecture using the furniture scale as a learning basis.......Published in 2014 on the occasion of the third 'A Place to Sit' exhibition as a reflection upon three years of teaching tectonic method in architecture using the furniture scale as a learning basis....

  10. A Workshop that Works

    CERN Document Server

    Yunes, Nicolas

    2014-01-01

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

  11. Buying a New Car?

    Institute of Scientific and Technical Information of China (English)

    Paul; Maghielse

    2000-01-01

    You read it here first, folks: a car buying processthat first counsels its readers not to buy a car! Why?Because, no matter what mystical incantations a carsalesperson may whisper in your ear, cars are notinvestments. Certainly, there are a few exceptions to that rule,but in general. vehicles are what the accountantsamong us call depreciating assets. Think of a vehiclepurchase in comparison with the other big-ticketpurchases we make during our lifetimes. Buying a

  12. A Brilliant Conductor with a Potential Enterprise

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Huafang Co.,LTD is a large integrated textile printing and dyeing enterprise,which is in Binzhou,a beautiful city located in the Yellow River Delta.It has a wide variety of textile products, including 1200 million meters of fabric,70 million meters of printed fabrics,50,000,000 meters of textile fabrics,five million sets of bedding and two million pieces of dress.It has been awarded as "top 10 enterprises" in textile industry for nine consecutive years by China National Textile&Apparel Council.Wang Limin is the general manager,who successfully runs this textile enterprise in China and puts it into the stock market.

  13. A cutaneous mixed tumor in a dog

    Science.gov (United States)

    WATANABE, Ken-ichi; CHAMBERS, James K.; UCHIDA, Kazuyuki; NIBE, Kazumi; USHIO, Nanako; HORIUCHI, Noriyuki; KOBAYASHI, Yoshiyasu; NAKAYAMA, Hiroyuki

    2017-01-01

    The atypical cutaneous tumor of a 9-year-old mixed breed female dog was examined. The tumor was well-demarcated and histologically composed of a trichoblastic area, tricholemmal area and apocrine glandular area. Neoplastic cells in trichoblastic area and tricholemmal area had PAS-positive granules in the cytoplasm and were positive for pan-cytokeratin, cytokeratin 5/6, 14 and 19 and p63. Neoplastic cells in trichoblastic area were also positive for cytokeratin 15 and CD34. Neoplastic cells in apocrine glandular area were positive for pan-cytokeratin and cytokeratin 7, 18 and 19. Myoepithelial cell proliferation with osteocartilaginous metaplasia was observed in this area. Since neoplastic cells showed multiphenotypic differentiation for hair follicles and apocrine glands, the present case was diagnosed as a cutaneous mixed tumor. PMID:28132963

  14. When is a word a word?

    Science.gov (United States)

    Vihman, M M; McCune, L

    1994-10-01

    Although adult-based words co-occur in the period of transition to speech with a variety of non-word vocalizations, little attention has been given to the formidable problem of identifying these earliest words. This paper specifies explicit, maximally 'inclusive' identification procedures, with criteria based on both phonetic and contextual parameters. A formal system for evaluating phonetic match is suggested, as well as a set of child-derived functional categories reflecting use in context. Analysis of word use across two samples of 10 children each, followed from 0;9 to 1;4, provides evidence to suggest that context-bound words can be 'trained' by focusing on eliciting language, but that the timing of context-flexible word use remains independent of such training.

  15. Suicide after a stroke: a population study

    DEFF Research Database (Denmark)

    Teasdale, T W; Engberg, A W

    2001-01-01

    cases of suicide were identified. MAIN RESULTS: Annual incidence rates, both observed and expected, together with standardised mortality ratios (SMR) were computed based on annual population and suicide statistics, stratified by age and gender. The overall annual incidence rate of suicide in the cohort.......19) and highest for those hospitalised for less than two weeks (2.32; 1.92, 2.80). Survival analysis suggested that the risk for suicide is greatest up to about five years after a stroke. CONCLUSIONS: Stroke patients are at an approximately doubled risk for suicide. This risk is greater among younger patients...... and causes of death. SETTING: The population of Denmark, 1979-1993. PATIENTS: A study cohort was defined comprising all 114 098 stroke patients discharged alive from hospital during the period 1979-1993. These patients were then screened in a register of causes of death over the same time period, and 359...

  16. Hiding a neutron star inside a wormhole

    CERN Document Server

    Dzhunushaliev, Vladimir; Kleihaus, Burkhard; Kunz, Jutta

    2014-01-01

    We consider neutron-star-plus-wormhole configurations supported by a massless ghost scalar field. The neutron fluid is modeled by an anisotropic equation of state. When the central energy density of the fluid is of comparable magnitude to the one of the scalar field, configurations with an equator at the center and a double-throat arise. These double-throat wormholes can be either partially or completely filled by the neutron fluid. In the latter case, the passage of light - radiated by the neutron matter - through these wormholes is studied. A stability analysis indicates that all considered configurations are unstable with respect to linear perturbations, independent of whether the fluid is isotropic or anisotropic.

  17. Packing a cake into a box

    KAUST Repository

    Skopenkov, Mikhail

    2011-05-01

    Given a triangular cake and a box in the shape of its mirror image, how can the cake be cut into a minimal number of pieces so that it can be put into the box? The cake has icing, so we are not allowed to put it into the box upside down. V. G. Boltyansky asked this question in 1977 and showed that three pieces always suffice. In this paper we provide examples of cakes that cannot be cut into two pieces to be put into the box. This shows that three is the answer to Boltyansky\\'s question. We also give examples of cakes which can be cut into two pieces. © THE MATHEMATICAL ASSOCIATION OF AMERICA.

  18. A Blue Lagoon Function

    DEFF Research Database (Denmark)

    Markvorsen, Steen

    2007-01-01

    We consider a specific function of two variables whose graph surface resembles a blue lagoon. The function has a saddle point $p$, but when the function is restricted to any given straight line through $p$ it has a {\\em{strict local minimum}} along that line at $p$.......We consider a specific function of two variables whose graph surface resembles a blue lagoon. The function has a saddle point $p$, but when the function is restricted to any given straight line through $p$ it has a {\\em{strict local minimum}} along that line at $p$....

  19. A Study on a Software Quality Assurance of a Process and a Product

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyun Tae [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    2006-07-01

    Since nuclear plants and facilities have made increasing use of digital technology, the safety and reliability of software is a primary concern. Software errors are more difficult to detect and handle than hardware-related failures. It is crucial to consider the a process and a product of a software life cycle to increase the quality of a software. This paper discusses the quality assurance of a process and a product of a software life cycle based on two prominent standards, ISO 9001:2000 and CMMI.

  20. A Naturally Attractive Supermodel

    CERN Document Server

    Cohen, Timothy; Torroba, Gonzalo

    2012-01-01

    We propose an attractor mechanism which generates the "more minimal" supersymmetric standard model from a broad class of supersymmetry breaking boundary conditions. The hierarchies in the fermion masses and mixings are produced by the same dynamics and a natural weak scale results from gaugino mediation. These features arise from augmenting the standard model with a new SU(3) gauge group under which only the third generation quarks are charged. The theory flows to a strongly interacting fixed point which induces a negative anomalous dimension for the third generation quarks and a positive anomalous dimension for the Higgs. As a result, a split-family natural spectrum and the flavor hierarchies are dynamically generated.

  1. Shaping a Scientific Self

    DEFF Research Database (Denmark)

    Andrade-Molina, Melissa; Valero, Paola

    In this paper we illustrate how a truth circulates within social discourse. We examine a particular truth reproduced within science, that is: through the understanding of Euclid’s axioms and postulates a person will gain the access to all human knowledge. We deploy a discourse analysis that helps...... us to understand how a truth is reproduced, circulating among diverse fields of human knowledge. Also it will show why we accept and reproduce a particular discourse. Finally, we state Euclidean geometry as a truth that circulates in scientific discourse and performs a scientific self. We unfold...

  2. Hotelier: a Passion or a Profession?

    Directory of Open Access Journals (Sweden)

    Agung Gita Subakti

    2013-05-01

    Full Text Available The history of hotels is intimately connected to that of civilizations. Or rather, it is a part of that history. Through years and time, many people are making their mark in the hotel industry by gaining the title as a Hotelier. Not just nationwide but they placed their footsteps throughout the world and became leading people in the Hospitality industry. The aim of this paper is to overview some of the people who had achieve the reputation as an Hotelier: globally recognized, set up their set of high quality standard, developing international brand and be able to sustain and succeed worldwide.

  3. Diaspora: A Look Back on a Concept

    Directory of Open Access Journals (Sweden)

    William Berthomière

    2007-10-01

    Full Text Available There are some words that are used at loosing theirs meanings. Diaspora is one of these. Full or empty of meaning, we are speaking today of “Cultural Diasporas” (Cohen, of “Fear Diasporas” (Appaduraï, of “Virtual Diasporas,” etc. This introductive paper is an attempt to clarify the development of a concept since the beginning of its life inside the Social Sciences during the 70’s. The term diaspora finds its roots in the Greek language and is based on a translation of the Hebrew word, Galut...

  4. A Study of a Mechanical Swimming Dolphin

    Science.gov (United States)

    Fang, Lilly; Maass, Daniel; Leftwich, Megan; Smits, Alexander

    2007-11-01

    A one-third scale dolphin model was constructed to investigate dolphin swimming hydrodynamics. Design and construction of the model were achieved using body coordinate data from the common dolphin (Delphinus delphis) to ensure geometric similarity. The front two-thirds of the model are rigid and stationary, while an external mechanism drives the rear third. This motion mimics the kinematics of dolphin swimming. Planar laser induced florescence (PLIF) and particle image velocimetry (PIV) are used to study the hydrodynamics of the wake and to develop a vortex skeleton model.

  5. A rationale for a museum of health

    Directory of Open Access Journals (Sweden)

    Farzaneh Yousefi

    2015-11-01

    Full Text Available The museum of health is a place that presents health science and human body and any other subjects that can affect human health. In this museum visitors can learn the mechanisms and functions of human body and learn how to protect and take care of their bodies. They can also learn several diseases and their consequences on human body and how to fight against them. This museum is a big step for improvement of general society health level by increasing society’s health knowledge. In this article structure, departments and also benefits of the health museum are evaluated.

  6. Transvestism as a symptom: A case series

    Directory of Open Access Journals (Sweden)

    M Anupama

    2016-01-01

    Full Text Available Transvestism, commonly termed as cross-dressing, means to dress in the clothing of opposite sex. We describe a series of three cases with transvestism as one of their primary complaints. The discussion sheds light on the various ways in which transvestism as a symptom can present in Psychiatry. In the first two cases, there was lower intelligence. In first and third case, there were other paraphilia along with transvestism. Second case had co-morbid obsessive-compulsive disorder (OCD and had good response to selective serotonin reuptake inhibitor (SSRI.

  7. A Fat Higgs with a Fat Top

    CERN Document Server

    Delgado, A; Delgado, Antonio; Tait, Tim M.P.

    2005-01-01

    A new variant of the supersymmetric Fat Higgs model is presented in which the MSSM Higgses as well as the top quark are composite. The underlying theory is an s-confining SU(3) gauge theory with the MSSM gauge groups realized as gauged sub-groups of the chiral flavor symmetries. This motivates the large Yukawas necessary for the large top mass and SM-like Higgs of mass>>M_Z in a natural way as the residual of the strong dynamics responsible for the composites. This removes fine-tuning associated with these couplings present in the original Fat Higgs and New Fat Higgs models, respectively.

  8. What a Difference a Swath Makes!

    Science.gov (United States)

    Mayer, L. A.; Gardner, J. V.

    2014-12-01

    Since the introduction to the academic community of multibeam sonar swath mapping techniques in the late 1970s, the ability to collect high-resolution bathymetry and seafloor imagery has steadily increased. Early systems provided a limited number (e.g., 16) of relatively broad (2-4 degree) beams and swath widths of approximately one times the water depth, whereas current systems offer hundreds of narrower (0.5 to 1 degree) beams over swath widths of five to seven times water depth. Innovations like chirped pulses and high-density beam forming (multiple depth solutions per beam footprint) have also pushed the resolution of modern systems. Despite these improvements, the resolution achievable is fundamentally limited by trade-offs between beam width, bandwidth, transducer size and propagation, resulting in the need for short ranges to the seafloor to achieve the highest levels of resolution. In the deep sea this means delivery of high-frequency, high-resolution mapping systems close to the bottom by means of towed or autonomous vehicles, the trade-off here being limited areal coverage due to narrow swaths and slow mapping speeds. Despite these constraints, we cannot forget that only a small fraction of the deep ocean has been mapped by any sort of swath mapping system (10-20%) and that even a single well-calibrated and properly operated multibeam swath collected at high-speed during a long transit can offer a remarkable amount of insight into seafloor processes. We will illustrate this through the exploration of a single transit by the R/V KILO MOANA (using a Kongsberg EM120 MBES) from Hawaii to Kodiak Alaska. When compared to the best available global bathymetric compilations using both satellite derived bathymetry and existing bathymetric data (e.g., Global Topography of Smith and Sandwell, GMRT, or ETOPO-1), the single swath offers detailed views of deep-sea channels, seamount and guyots, tectonic structure and volcanic processes that are totally absent in the

  9. A strategic approach to a green economy.

    Science.gov (United States)

    Trumka, Richard L

    2009-01-01

    The crash has happened and we face dual market failures: climate change and the greatest economic crisis of our lifetimes. American labor believes that we must have a strategic approach to greening the economy centered on domestic investment in new technologies, the creation of good jobs, and leading a shared international response to both these issues. The nay-sayers are the same financial and industrial interests that advised the world economy into chaos. Their advice to us is more of the same: no rules, no regulations, free markets, and free trade. But now is the time for real change.

  10. Between a Map and a Data Rod

    Science.gov (United States)

    Teng, W. L.; Rui, H.; Strub, R. F.; Vollmer, B.

    2015-12-01

    A "Digital Divide" has long stood between how NASA and other satellite-derived data are typically archived (time-step arrays or "maps") and how hydrology and other point-time series oriented communities prefer to access those data. In essence, the desired method of data access is orthogonal to the way the data are archived. Our approach to bridging the Divide is part of a larger NASA-supported "data rods" project to enhance access to and use of NASA and other data by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) Hydrologic Information System (HIS) and the larger hydrology community. Our main objective was to determine a way to reorganize data that is optimal for these communities. Two related objectives were to optimally reorganize data in a way that (1) is operational and fits in and leverages the existing Goddard Earth Sciences Data and Information Services Center (GES DISC) operational environment and (2) addresses the scaling up of data sets available as time series from those archived at the GES DISC to potentially include those from other Earth Observing System Data and Information System (EOSDIS) data archives. Through several prototype efforts and lessons learned, we arrived at a non-database solution that satisfied our objectives/constraints. We describe, in this presentation, how we implemented the operational production of pre-generated data rods and, considering the tradeoffs between length of time series (or number of time steps), resources needed, and performance, how we implemented the operational production of on-the-fly ("virtual") data rods. For the virtual data rods, we leveraged a number of existing resources, including the NASA Giovanni Cache and NetCDF Operators (NCO) and used data cubes processed in parallel. Our current benchmark performance for virtual generation of data rods is about a year's worth of time series for hourly data (~9,000 time steps) in ~90 seconds. Our approach is a specific

  11. A Plea for a Simple Solution

    DEFF Research Database (Denmark)

    Widell, Peter

    2010-01-01

    This paper presents a criticism of the classical speech act theory (Austin, Searle). In contrast to this theory, which operates with four to five types of basic illocutionary acts, I will argue for just one type: the assertive. Assertives are speech acts which can make locutions (propositions) tr...... and false. It is the major argument in the paper that the assertive is the only kind of illocution we need, and that any suggestion that it should be otherwise has bad consequences for ontology, logic and a decent theory of meaning....

  12. Between a Map and a Data Rod

    Science.gov (United States)

    Teng, William; Rui, Hualan; Strub, Richard; Vollmer, Bruce

    2015-01-01

    A Digital Divide has long stood between how NASA and other satellite-derived data are typically archived (time-step arrays or maps) and how hydrology and other point-time series oriented communities prefer to access those data. In essence, the desired method of data access is orthogonal to the way the data are archived. Our approach to bridging the Divide is part of a larger NASA-supported data rods project to enhance access to and use of NASA and other data by the Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) Hydrologic Information System (HIS) and the larger hydrology community. Our main objective was to determine a way to reorganize data that is optimal for these communities. Two related objectives were to optimally reorganize data in a way that (1) is operational and fits in and leverages the existing Goddard Earth Sciences Data and Information Services Center (GES DISC) operational environment and (2) addresses the scaling up of data sets available as time series from those archived at the GES DISC to potentially include those from other Earth Observing System Data and Information System (EOSDIS) data archives. Through several prototype efforts and lessons learned, we arrived at a non-database solution that satisfied our objectivesconstraints. We describe, in this presentation, how we implemented the operational production of pre-generated data rods and, considering the tradeoffs between length of time series (or number of time steps), resources needed, and performance, how we implemented the operational production of on-the-fly (virtual) data rods. For the virtual data rods, we leveraged a number of existing resources, including the NASA Giovanni Cache and NetCDF Operators (NCO) and used data cubes processed in parallel. Our current benchmark performance for virtual generation of data rods is about a years worth of time series for hourly data (9,000 time steps) in 90 seconds. Our approach is a specific implementation of

  13. Adding a dietitian to a Danish Liaison

    DEFF Research Database (Denmark)

    Pohju, Anne; Lugnet, Kerstin; Rasmussen, Nanna;

    2016-01-01

    with (intervention group, IG) or without a dietitian (control group, CG). The IG received three home visits by the dietitian during a 12-week period. Data included in the economic analysis was time spent by the dietitian, use of oral nutritional supplements (ONS) and number of hospitalization days. Results......: Of the 71 included patients, 34 were in the IG, 30 patients received all three dietitian visits. Cumulated number of hospitalization days was 172 in the IG and 415 in the CG. Use of ONS was 48 % in the IG and 17% in the CG (P=0.001). Estimated cost for the dietitian and ONS combined in the IG was €9...

  14. A MEANS FOR CALIBRATING A MICROSCOPE, A METHOD OF PREPARING THE MEANS AND A METHOD OF CALIBRATING A MICROSCOPE

    DEFF Research Database (Denmark)

    2005-01-01

    A means or artefact for calibrating the height/depth or Z axis of a microscope, such as a confocal microscope, an interference microscope or a Scanning Electron Microscope. The artefact comprises a number of tapering or pie-shaped, parallel surfaces each extending from a central axis, whereby all...

  15. A Generalized Jacobi Algorithm

    DEFF Research Database (Denmark)

    Vissing, S.; Krenk, S.

    An algorithm is developed for the generalized eigenvalue problem (A - λB)φ = O where A and B are real symmetric matrices. The matrices A and B are diagonalized simultaneously by a series of generalized Jacobi transformations and all eigenvalues and eigenvectors are obtained. A criterion expressed...... in terms of the transformation parameters is used to omit transformations leading to very small changes. The algorithm is described in pseudo code for lower triangular matrices A and B and implemented in the programming Language C.......An algorithm is developed for the generalized eigenvalue problem (A - λB)φ = O where A and B are real symmetric matrices. The matrices A and B are diagonalized simultaneously by a series of generalized Jacobi transformations and all eigenvalues and eigenvectors are obtained. A criterion expressed...

  16. Just a Body in a Wheelchair

    Science.gov (United States)

    Rosen, Betty

    2014-01-01

    This article has no direct link with academics, children, students or those who teach: I severed almost all such connections several years ago. It describes the rewards and challenges of leading a reminiscence group of elderly people, all of whom suffer some level of memory loss and/or severe physical disability; most are wheelchair-bound. It…

  17. A Good President Rates a Cash Bonus.

    Science.gov (United States)

    Dane, Roger; Koenig, Allen E.

    1981-01-01

    Emerson College's board rewarded its president for outstanding performance with a cash bonus of 36 percent of salary. The cash bonus idea is offered as one novel compensation plan for college presidents, but it is suggested that trustees can act as opinion leaders for implementing other creative compensation plans. (MLW)

  18. From a Girl to a Young Woman.

    Science.gov (United States)

    Population Education Newsletter and Forum, 1987

    1987-01-01

    Describes a 27-part flip chart developed in the Marshall Islands which was designed to be used with sixth graders in an effort to prevent teenage pregnancy. Examples of various parts of the materials are included, along with discussion questions. (TW)

  19. A Bad Argument for a Reasonable Position

    Science.gov (United States)

    Bain, Robert B.

    2008-01-01

    The author was disappointed after reading Kevin St. Jarre's article entitled "Reinventing Social Studies". Rather than reinventing social studies, this article reflects the field's major problems. It recycles stereotypical views of history teachers, confuses chronology with history, and offers a one-dimensional, single-cause explanation for how…

  20. A Case of Stroke in a Toddler

    Directory of Open Access Journals (Sweden)

    Kaustubh Deshmukh

    2008-12-01

    Full Text Available A 2 year male child, case of stroke on right side with associated anemia and thrombocytosis has been presented and discussed. Stroke is one of the rare neurological manifestation in children with multipleaetiological factors. Child was investigated to rule out various etiological conditions and was treated supportively for anemia to which he responded uneventfully.

  1. A HIGH BRAKING INDEX FOR A PULSAR

    Energy Technology Data Exchange (ETDEWEB)

    Archibald, R. F.; Ferdman, R. D.; Kaspi, V. M.; Tendulkar, S. P. [Department of Physics and McGill Space Institute, McGill University, 3600 University Street, Montréal, QC H3A 2T8 (Canada); Gotthelf, E. V. [Columbia Astrophysics Laboratory, 550 West 120th Street, New York, NY 10027-6601 (United States); Guillot, S. [Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago (Chile); Harrison, F. A. [Cahill Center for Astrophysics, California Institute of Technology, 1216 East California Boulevard, Pasadena, CA 91125 (United States); Keane, E. F. [SKA Organization, Jodrell Bank Observatory, Cheshire SK11 9DL (United Kingdom); Pivovaroff, M. J. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550-9234 (United States); Stern, D. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Tomsick, J. A. [Space Science Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720-7450 (United States)

    2016-03-01

    We present a phase-coherent timing solution for PSR J1640–4631, a young 206 ms pulsar using X-ray timing observations taken with NuSTAR. Over this timing campaign, we have measured the braking index of PSR J1640–4631 to be n = 3.15 ± 0.03. Using a series of simulations, we argue that this unusually high braking index is not due to timing noise, but is intrinsic to the pulsar's spin-down. We cannot, however, rule out contamination due to an unseen glitch recovery, although the recovery timescale would have to be longer than most yet observed. If this braking index is eventually proven to be stable, it demonstrates that pulsar braking indices greater than three are allowed in nature; hence, other physical mechanisms such as mass or magnetic quadrupoles are important in pulsar spin-down. We also present a 3σ upper limit on the pulsed flux at 1.4 GHz of 0.018 mJy.

  2. Are You a Man or a Mouse?

    DEFF Research Database (Denmark)

    Herrmann, Janne Rothmar

    2008-01-01

    possibility as an important step towards fulfilling the golden promises of stem cell research while simultaneously summarizing the worry that the creation of interspecies organisms is a slippery slope towards ‘the apocalyptic end of humanity'. The proposal to conduct cytoplasmic hybrid research raised...

  3. Charge of a quasiparticle in a superconductor.

    Science.gov (United States)

    Ronen, Yuval; Cohen, Yonatan; Kang, Jung-Hyun; Haim, Arbel; Rieder, Maria-Theresa; Heiblum, Moty; Mahalu, Diana; Shtrikman, Hadas

    2016-02-16

    Nonlinear charge transport in superconductor-insulator-superconductor (SIS) Josephson junctions has a unique signature in the shuttled charge quantum between the two superconductors. In the zero-bias limit Cooper pairs, each with twice the electron charge, carry the Josephson current. An applied bias VSD leads to multiple Andreev reflections (MAR), which in the limit of weak tunneling probability should lead to integer multiples of the electron charge ne traversing the junction, with n integer larger than 2Δ/eVSD and Δ the superconducting order parameter. Exceptionally, just above the gap eVSD ≥ 2Δ, with Andreev reflections suppressed, one would expect the current to be carried by partitioned quasiparticles, each with energy-dependent charge, being a superposition of an electron and a hole. Using shot-noise measurements in an SIS junction induced in an InAs nanowire (with noise proportional to the partitioned charge), we first observed quantization of the partitioned charge q = e*/e = n, with n = 1-4, thus reaffirming the validity of our charge interpretation. Concentrating next on the bias region eVSD ~ 2Δ, we found a reproducible and clear dip in the extracted charge to q ~ 0.6, which, after excluding other possibilities, we attribute to the partitioned quasiparticle charge. Such dip is supported by numerical simulations of our SIS structure.

  4. Could a Neuroscientist Understand a Microprocessor?

    Science.gov (United States)

    Jonas, Eric; Kording, Konrad Paul

    2017-01-01

    There is a popular belief in neuroscience that we are primarily data limited, and that producing large, multimodal, and complex datasets will, with the help of advanced data analysis algorithms, lead to fundamental insights into the way the brain processes information. These datasets do not yet exist, and if they did we would have no way of evaluating whether or not the algorithmically-generated insights were sufficient or even correct. To address this, here we take a classical microprocessor as a model organism, and use our ability to perform arbitrary experiments on it to see if popular data analysis methods from neuroscience can elucidate the way it processes information. Microprocessors are among those artificial information processing systems that are both complex and that we understand at all levels, from the overall logical flow, via logical gates, to the dynamics of transistors. We show that the approaches reveal interesting structure in the data but do not meaningfully describe the hierarchy of information processing in the microprocessor. This suggests current analytic approaches in neuroscience may fall short of producing meaningful understanding of neural systems, regardless of the amount of data. Additionally, we argue for scientists using complex non-linear dynamical systems with known ground truth, such as the microprocessor as a validation platform for time-series and structure discovery methods.

  5. Life of a Tooth: A Visual Timeline

    Medline Plus

    Full Text Available ... friv Home InfoBites Find an AGD Dentist Your Family's Oral Health About the AGD Dental care and ... Tooth games Home | InfoBites | Find a Dentist | Your Family's Oral Health | Newsroom | RSS About AGD | Contact AGD | ...

  6. A Beautiful End to a Day.

    Science.gov (United States)

    Johns, Pat

    2000-01-01

    Focuses on a second grade art lesson (two 40-minute class periods) in which students use stencils, oil pastels, and watercolors to create an impressionistic landscape. Discusses how to create the stencils, using oaktags, and how to create the picture. (CMK)

  7. Suicide after a stroke: a population study

    DEFF Research Database (Denmark)

    Teasdale, T W; Engberg, A W

    2001-01-01

    STUDY OBJECTIVE: To establish whether there are increased rates of suicide after a stroke and the degree to which any increase is related to gender, age at stroke, diagnosis, duration of hospitalisation, and time since stroke. DESIGN: Cross linkage of national registers for hospitalisations and c...

  8. A Planetary Companion to gamma Cephei A

    CERN Document Server

    Hatzes, A P; Endl, M; McArthur, B; Paulson, D B; Walker, G A H; Campbell, B; Yang, S; Hatzes, Artie P.; Cochran, William D.; Endl, Michael; Arthur, Barbara Mc; Paulson, Diane B.; Walker, Gordon A. H.; Campbell, Bruce; Yang, Stephenson

    2003-01-01

    We report the detection of a planetary companion in orbit around the primary star of the binary system gamma~Cephei. High precision radial velocity measurements using 4 independent data sets spanning the time interval 1981 to 2002 reveal long-lived residual radial velocity variations that are coherent in phase and amplitude with a period or 2.47 years and a semi-amplitude of 27 m/s. These residual radial velocity variations are most likely caused by a planetary mass companion with Msin i = 1.59 M_Jupiter and an orbital semi-major axis of 2.03AU. We have carefully analyzed of all the available photometric and spectroscopic data. Our CaII H&K S-index measurements taken during 1998-2002 show no variations with the planet period. Analysis of high resolution spectra taken 1988-1995 shows that the changes in the mean bisector velocity span and curvature for this star is less than 5 m/s. The Hipparcos photometry for this star made during 1989 to 1992 is constant to less than 0.001 mag. An analysis of the Walker ...

  9. A Beautiful Screen Tells a Classic Story

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    Scenes from Dream of Red Mansions, a masterpiece of classic Chinese literature, have been recreated in stone. Entitled "Stories from Dream of Red Mansions," the new work of fine workmanship took some three years and more than 80,000 working hours to complete. Fifty-two screens are linked to each other. stretching 70 meters in length, 2.3 meters in

  10. A. A. Berzin and His Memoir

    OpenAIRE

    Yablokov, A. V.

    2008-01-01

    Alfred A. Berzin began to study whales in 1955 at the Pacific Research and Fisheries Center (TINRO) in Vladivostok where he is still working at the present time. In the years before the rapid development of Soviet whaling only two fleets (Aleut and Second Kuril) were hunting whales.

  11. A photometric investigation of a bright Geminid

    NARCIS (Netherlands)

    Degewij, J.; Diggelen, Johannes van

    1968-01-01

    Photographic observations of meteors in the Netherlands started with a bright Geminid of photographic magnitude −8 observed on December 11, 1955, 21h39m55s by M. Alberts. From the assumed radiant and velocity we have constructed the trajectory of the bolide. The luminosity of the trail has been dete

  12. Mourning a Lost Childhood: A Therapeutic Task.

    Science.gov (United States)

    Kulish, Nancy Mann

    J. M. Barrie's popular story of Peter Pan depicts the never-neverland of an endless happy childhood. Analysis of the story and of J. M. Barrie's personal background, however, reveals that the tale is a conflicted solution to and separation from early childhood losses and disappointments. Themes of separation and reunion, redesertion and revenge…

  13. Decontextualized Language: A Problem, Not a Solution

    Science.gov (United States)

    Gee, James Paul

    2014-01-01

    Why do children from some minority groups and children living in poverty do poorly in school when compared to white middle-class children? Researchers have offered a large number of different answers to this question. One of the most popular answers has been based on the notion of "decontextualized language." This article argues that…

  14. Charge of a quasiparticle in a superconductor

    Science.gov (United States)

    Ronen, Yuval; Cohen, Yonatan; Kang, Jung-Hyun; Haim, Arbel; Rieder, Maria-Theresa; Heiblum, Moty; Mahalu, Diana; Shtrikman, Hadas

    2016-01-01

    Nonlinear charge transport in superconductor–insulator–superconductor (SIS) Josephson junctions has a unique signature in the shuttled charge quantum between the two superconductors. In the zero-bias limit Cooper pairs, each with twice the electron charge, carry the Josephson current. An applied bias VSD leads to multiple Andreev reflections (MAR), which in the limit of weak tunneling probability should lead to integer multiples of the electron charge ne traversing the junction, with n integer larger than 2Δ/eVSD and Δ the superconducting order parameter. Exceptionally, just above the gap eVSD ≥ 2Δ, with Andreev reflections suppressed, one would expect the current to be carried by partitioned quasiparticles, each with energy-dependent charge, being a superposition of an electron and a hole. Using shot-noise measurements in an SIS junction induced in an InAs nanowire (with noise proportional to the partitioned charge), we first observed quantization of the partitioned charge q = e*/e=n, with n = 1–4, thus reaffirming the validity of our charge interpretation. Concentrating next on the bias region eVSD∼2Δ, we found a reproducible and clear dip in the extracted charge to q ∼0.6, which, after excluding other possibilities, we attribute to the partitioned quasiparticle charge. Such dip is supported by numerical simulations of our SIS structure. PMID:26831071

  15. Bioetanol: mantendo a liderança

    OpenAIRE

    Núbia Moura Ribeiro

    2012-01-01

    CORTEZ, Luís Augusto Barbosa (Coordenador). Bioetanol de cana-de-açúcar: P&D para produtividade e sustentabilidade. São Paulo: Editora Edgard Blucher Ltda. e FAPESP. 2010. 992 p. ISBN 9788521205319. R$ 180,00.

  16. A Faculty Code is not a Coda

    Science.gov (United States)

    O'Neil, Robert M.

    1974-01-01

    Many college and university faculties have adopted codes of faculty responsibilities and self-regulation. Firsthand advice on creating a code precedes an example of one: the new University of California Policy on Faculty Conduct and the Administration of Discipline. (Editor/PG)

  17. A balanced psychology and a full life.

    Science.gov (United States)

    Seligman, Martin E P; Parks, Acacia C; Steen, Tracy

    2004-01-01

    Psychology since World War II has been largely devoted to repairing weakness and understanding suffering. Towards that end, we have made considerable gains. We have a classification of mental illness that allows international collaboration, and through this collaboration we have developed effective psychotherapeutic or pharmacological treatments for 14 major mental disorders. However, while building a strong science and practice of treating mental illness, we largely forgot about everyday well-being. Is the absence of mental illness and suffering sufficient to let individuals and communities flourish? Were all disabling conditions to disappear, what would make life worth living? Those committed to a science of positive psychology can draw on the effective research methods developed to understand and treat mental illness. Results from a new randomized, placebo-controlled study demonstrate that people are happier and less depressed three months after completing exercises targeting positive emotion. The ultimate goal of positive psychology is to make people happier by understanding and building positive emotion, gratification and meaning. Towards this end, we must supplement what we know about treating illness and repairing damage with knowledge about nurturing well-being in individuals and communities. PMID:15347529

  18. A Little Goes a Long Way

    Science.gov (United States)

    Woo, Vila

    2007-01-01

    The process of art-making is integral to the development of a child's fine motor skills, coordination, and concentration. Therefore, creating an ongoing project one or two weeks in length can benefit both teacher and students. The teacher can assess the children's skills by observing the way they handle materials. Also, after spending valuable…

  19. A "One Kid at a Time" Church

    Science.gov (United States)

    Walker, Joyce MacKichan

    2009-01-01

    One might think a large church would organize Sabbath morning "classes" for children with special needs, staff them with volunteer professionals trained in working with the children, and sit back and enjoy being large enough to have the resources to do so. Not Nassau Presbyterian Church in Princeton, New Jersey. Neither the theology nor the…

  20. Life of a Tooth: A Visual Timeline

    Medline Plus

    Full Text Available ... Contact InfoBites Quick Reference Learn more Children's Oral Health Are You Biting Off More Than You Can ... Home | InfoBites | Find a Dentist | Your Family's Oral Health | Newsroom | RSS About AGD | Contact AGD | Site Map | ...

  1. Fluctuations of a fluid inside a pore

    NARCIS (Netherlands)

    Zvelindovsky, AV; Zatovsky, AV

    1997-01-01

    The correlation theory of the thermal hydrodynamic fluctuations of compressible viscous fluids within a spherical pore has been developed. The fluctuation motions ape described by the linearized Navier-Stokes and heat transfer equations, containing spontaneous viscous stresses and heat fluxes. The e

  2. Choosing a Great Preschool: A Parent's Perspective

    Science.gov (United States)

    Ransom, Marilee

    2012-01-01

    Many parents--whether employed outside the home or not--either want or need preschool for their young children. Research indicates that quality early educational experiences bestow numerous benefits on children, including developing a love of school, healthy socialization, meaningful learning, and preparation for kindergarten. Equipped with this…

  3. "It's a bit unmanly in a way"

    DEFF Research Database (Denmark)

    Tjørnhøj-Thomsen, Tine

    2009-01-01

    The chapter investigates how male infertility affects notions of masculinity and fatherhood in a Danish context. It addresses these questions through an examination of men's thoughts, experiences and feelings in relations to their wished-for fatherhood, their infertility and childlessness, and as...

  4. A ribozyme transcribed by a ribozyme

    DEFF Research Database (Denmark)

    Bentin, Thomas

    2011-01-01

    Prominent current ideas on how life emerged on Earth include an RNA world hypothesis in which RNA performed informational as well as catalytic functions in the absence of both DNA and protein. Demonstration of a self-replicative system based on ribonucleic acid polymers as both information carrie...

  5. Becoming a Parent in a Digitized Age

    DEFF Research Database (Denmark)

    Sonne Damkjær, Maja

    This paper presents the results of a comparative case study on the role of digital media in the lives of Danish first-time parents (2012-15). Findings show that key practices in the transition to parenthood are closely entwined with digital media use e.g. announcing pregnancy and birth, sharing n...

  6. A School Day is a School Day

    DEFF Research Database (Denmark)

    Engelhardt, Robin

    2007-01-01

    Life of Science, edited by Lykke Margot Ricard and Robin Engelhardt. Learning Lab Denmark, Copenhagen, pages 7-13. 2003 Short description: The school Sint-Jozef-Klein-Seminarie in the Flemish town of Sint-Niklaas reveals a school system characterised by hard work, solicitude and tradition. Abstra...

  7. Applying a potential across a biomembrane

    DEFF Research Database (Denmark)

    Ambjörnsson, Tobias; Lomholt, Michael A; Hansen, Per Lyngs

    2007-01-01

    We investigate the effect on biomembrane mechanical properties due to the presence an external potential for a nonconductive incompressible membrane surrounded by different electrolytes. By solving the Debye-Hückel and Laplace equations for the electrostatic potential and using the relevant stres...

  8. A Contribution Towards A Grammar of Code

    Directory of Open Access Journals (Sweden)

    David M. Berry

    2008-01-01

    Full Text Available Over the past thirty years there has been an increasing interest in the social and cultural implications of digital technologies and ‘informationalism’ from the social sciences and humanities. Generally this has concentrated on the implications of the “convergence” of digital devices and services, understood as linked to the discrete processing capabilities of computers, which rely on logical operations, binary processing and symbolic representation. In this paper, I wish to suggest that a ‘grammar of code’ might provide a useful way of thinking about the way in which digital technologies operate as a medium and can contribute usefully to this wider debate. I am interested in the way in which the dynamic properties of code can be understood as operating according to a grammar reflected in its materialisation and operation in the lifeworld – the discretisation of the phenomenal world. As part of that contribution in this paper I develop some tentative Weberian ‘ideal-types’. These ideal-types are then applied to the work of the Japanese composer, Masahiro Miwa, whose innovative ‘Reverse-Simulation music’ models the operation of basic low-level digital circuitry for the performance and generation of musical pieces.

  9. Is a Mealworm Really a Worm?

    Science.gov (United States)

    Lott, Kimberly; Read, Sylvia

    2012-01-01

    Many times students are given the task of keeping a science notebook, but do not fully understand the process or purpose of this endeavour. Science notebooks contain not only data but also questions, predictions, observations, and reflections from their experiences in science. To maximize the effectiveness of the science notebook, teachers must…

  10. Eph receptor A10 has a potential as a target for a prostate cancer therapy

    Energy Technology Data Exchange (ETDEWEB)

    Nagano, Kazuya [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Yamashita, Takuya [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 (Japan); Inoue, Masaki [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Higashisaka, Kazuma [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 (Japan); Yoshioka, Yasuo [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 (Japan); The Center of Advanced Medical Engineering and Informatics, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 (Japan); Abe, Yasuhiro [Cancer Biology Research Center, Sanford Research/USD, 2301 E. 60th Street N, Sioux Falls, SD 57104 (United States); Mukai, Yohei [Laboratory of Innovative Antibody Engineering and Design, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); Kamada, Haruhiko [Laboratory of Biopharmaceutical Research, National Institute of Biomedical Innovation, 7-6-8 Saito-Asagi, Ibaraki, Osaka 567-0085 (Japan); The Center of Advanced Medical Engineering and Informatics, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871 (Japan); and others

    2014-07-18

    Highlights: • EphA10 mRNA is overexpressed in breast, prostate and colon cancer cell lines. • EphA10 is overexpressed in clinical prostate tumors at mRNA and protein levels. • Anti-EphA10 antibodies were cytotoxic on EphA10-positive prostate cancer cells. - Abstract: We recently identified Eph receptor A10 (EphA10) as a novel breast cancer-specific protein. Moreover, we also showed that an in-house developed anti-EphA10 monoclonal antibody (mAb) significantly inhibited proliferation of breast cancer cells, suggesting EphA10 as a promising target for breast cancer therapy. However, the only other known report for EphA10 was its expression in the testis at the mRNA level. Therefore, the potency of EphA10 as a drug target against cancers other than the breast is not known. The expression of EphA10 in a wide variety of cancer cells was studied and the potential of EphA10 as a drug target was evaluated. Screening of EphA10 mRNA expression showed that EphA10 was overexpressed in breast cancer cell lines as well as in prostate and colon cancer cell lines. Thus, we focused on prostate cancers in which EphA10 expression was equivalent to that in breast cancers. As a result, EphA10 expression was clearly shown in clinical prostate tumor tissues as well as in cell lines at the mRNA and protein levels. In order to evaluate the potential of EphA10 as a drug target, we analyzed complement-dependent cytotoxicity effects of anti-EphA10 mAb and found that significant cytotoxicity was mediated by the expression of EphA10. Therefore, the idea was conceived that the overexpression of EphA10 in prostate cancers might have a potential as a target for prostate cancer therapy, and formed the basis for the studies reported here.

  11. Finding a Needle in a Climate Haystack

    Science.gov (United States)

    Verosub, K. L.; Medrano, R.; Valentine, M.

    2014-12-01

    We are studying the regional impact of volcanic eruptions that might have caused global cooling using high-quality annual-resolution proxy records of natural phenomena, such as tree-ring widths, and cultural events, such as the dates of the beginning of grape and rye harvests. To do this we need to determine if the year following an eruption was significantly colder and wetter than preceding or subsequent years as measured by any given proxy and if that year is consistently cold and wet across different proxies. The problem is complicated by the fact that normal inter-annual variations in any given proxy can be quite large and can obscure any volcanological impact and by the fact that inter-annual variations for different proxies will have different means and standard deviations. We address the first problem by assuming that on a regional scale, the inter-annual variations of different proxies are at best only weakly correlated and that, in the absence of a volcanological signal, these variations will average out on a regional scale. We address the second problem by renormalizing each record so that it has the same mean and standard deviation over a given time interval. We then sum the re-normalized records on a year-by-year basis and look for years with significantly higher total scores. The method can also be used to assess the statistical significance of an anomalous value. Our initial analysis of records primarily from the Northern Hemisphere shows that the years 1601 and 1816 were significantly colder and wetter than any others in the past 500 years. These years followed the eruptions of Huayanaputina in Chile and Tambora in Indonesia, respectively, by one year. The years 1698 and 1837 also show up as being climatologically severe although they have not (yet) been associated with specific volcanic eruptions.

  12. Is a fatty pancreas a banal lesion?

    Directory of Open Access Journals (Sweden)

    Andrzej Smereczyński

    2016-09-01

    Full Text Available So far, a fatty pancreas has been related to obesity and the ageing processes in the body. The current list of pathogenetic factors of the condition is clearly extended with genetically conditioned diseases (cystic fibrosis, Shwachman-Diamond syndrome and Johanson-Blizzard syndrome, pancreatitis, especially hereditary and obstructive, metabolic and hormonal disorders (hypertriglyceridemia, hypercholesterolemia, hyperinsulinemia and hypercortisolemia, alcohol overuse, taking some medicines (especially adrenal cortex hormones, disease of the liver and visceral adiposis. As regards lipomatosis of that organ resulting mainly from dyslipidemia and hyperglycemia, the term “nonalcoholic fatty pancreas disease” was introduced. Experimental studies on animals and histological preparations of the pancreatic fragments show that the lipotoxicity of the collected adipocytes collected ion the organ release a cascade of proinflammatory phenomena, and even induces the processes of carcinogenesis. Pancreas adiposis is best defined in Computed Tomography and Magnetic Resonance Imaging. However, a series of works proved the usefulness in the diagnostics of that pathology of transabdominal and endoscopic ultrasonography. In that method, the degree of adiposis was based on the comparison of echogenicity of the pancreas and the liver, renal parenchyma, spleen and/or retroperitoneal adipose. Recently, the evaluation was expanded by the evaluation of the degree of pancreatic adipose with the pancreas-to-liver index, utilizing to that end a special computer program. According to our experience, the simplest solution is the method utilized by us. On one crosssection of the body of the pancreas, its echogenicity is assessed in comparison to retroperitoneal adipose and the visibility of the splenic vein, pancreatic duct and the major retroperitoneal vessels. Depending on the visualization of these structures, it is possible to determine the degree of pancreas adiposis

  13. PREFACE: A Stellar Journey A Stellar Journey

    Science.gov (United States)

    Asplund, M.

    2008-10-01

    The conference A Stellar Journey was held in Uppsala, Sweden, 23 27June 2008, in honour of Professor Bengt Gustafsson's 65th birthday. The choice of Uppsala as the location for this event was obvious given Bengt's long-standing association with the city stemming back to his school days. With the exception of a two-year postdoc stint in Copenhagen, five years as professor at Stockholm University and two years as director of the Sigtuna foundation, Bengt has forged his illustrious professional career at Uppsala University. The symposium venue was Museum Gustavianum, once the main building of the oldest university in Scandinavia. The title of the symposium is a paraphrasing of Bengt's popular astronomy book Kosmisk Resa (in English: Cosmic Journey) written in the early eighties. I think this aptly symbolizes his career that has been an astronomical voyage from near to far, from the distant past to the present. The original book title was modified slightly to reflect that most of his work to date has dealt with stars in one way or another. In addition it also gives credit to Bengt's important role as a guiding light for a very large number of students, colleagues and collaborators, indeed for several generations of astronomers. For me personally, the book Kosmisk Resa bears particular significance as it has shaped my life rather profoundly. Although I had already decided to become an astronomer, when I first read the book as a 14-year-old I made up my mind then and there that I would study under Bengt Gustafsson and work on stars. Indeed I have remained true to this somewhat audacious resolution. I suspect that a great number of us have similar stories how Bengt has had a major influence on our lives, whether on the professional or personal level. Perhaps Bengt's most outstanding characteristic is his enthralling enthusiasm. This is equally true whether he is pondering some scientific conundrum, supervising students or performing in front of an audience, be it an

  14. Controlling a leaky tap

    CERN Document Server

    Ilarraza-Lomelí, A C; Salas-Brito, A L; Ilarraza-Lomelí, Aquiles

    1999-01-01

    We apply the Ott, Grebogy and Yorke mechanism for the control of chaos to the analytical oscillator model of a leaky tap obtaining good results. We exhibit the robustness of the control against both dynamical noise and measurement noise.A possible way of controlling experimentally a leaky tap using magnetic-field-produced variations in the viscosity of a magnetorheological fluid is suggested.

  15. Have a Ball

    Institute of Scientific and Technical Information of China (English)

    程炜

    2003-01-01

    Before being sent to prison Carl drove big cars and ate in expensive restaurants. No one knew where he got his money but he was certainly having a ball. When the judge sentenced him.to prison he said, “I hope you have a bail, Carl.” To have a bait is to have a wonderful time.

  16. Slicing a Big Cake

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Beijing undergoes huge population burdens and needs to conduct urban planning in a more rational way "Every morning when I wake up and think of taking the subway,I feel like I’m preparing to enter a nightmare,"said Wang Zili, a secretary with a Beijing-based foreign

  17. I had a dream

    Institute of Scientific and Technical Information of China (English)

    By William E. Wright

    2012-01-01

    I had a dream. Like Martin Luther King, Jr. said in a speech memorized by almost all Chinese students, I had a dream. My dream was that one day I would teach in a foreign country. Little did I know how fascinating and rich teaching in the Law School of Shandong University would be.

  18. En Torno a Carpentier

    OpenAIRE

    Picado Gómez, Manuel

    2015-01-01

    Este estudio tiene como finalidad hacer una introduccion al mundo narrativo del escritor cubano Alejo Carpentier. Para lograr nuestro empefio vamos a distinguir dos partes en la exposicion. Primero, una pequeña noticia sobre el autor y su pensamiento y posteriormente una mirada a su obra, con Ia intencion de llegar a la unidad de sentido que organiza el cosmos literario.

  19. Chromogranin A in gastrinomas

    DEFF Research Database (Denmark)

    Rehfeld, Jens F

    2015-01-01

    a clinical syndrome. This review uses gastrinomas (gastrin-producing tumors) as a starting point for discussion of CgA versus peptide hormone as tumor marker. Data available so far indicate that well-defined assays for gastrin have significantly higher diagnostic sensitivity than CgA measurements...

  20. A Simple "Pig" Game

    Science.gov (United States)

    Johnson, Roger W.

    2008-01-01

    Our pig game involves a series of tosses of a die with the possibility of a player's score improving with each additional toss. With each additional toss, however, there is also the chance of losing the entire score accumulated so far. Two different strategies for deciding how many tosses a player should attempt are developed and then compared in…

  1. Radiometer on a Chip

    Science.gov (United States)

    Chattopadhyay, Goutam; Gill, John J.; Mehdi, Imran; Lee, Choonsup; Schlecht, Erich T.; Skalare, Anders; Ward, John S.; Siegel, Peter H.; Thomas, Bertrand C.

    2009-01-01

    The radiometer on a chip (ROC) integrates whole wafers together to p rovide a robust, extremely powerful way of making submillimeter rece ivers that provide vertically integrated functionality. By integratin g at the wafer level, customizing the interconnects, and planarizing the transmission media, it is possible to create a lightweight asse mbly performing the function of several pieces in a more conventiona l radiometer.

  2. A triple murder.

    Science.gov (United States)

    Vidanapathirana, M; Ruwanpura, P R; Ariyaratne, D; Karunanayake, D S K

    2015-12-01

    Three partially burnt bodies were found in a burnt out bedroom. A candle and matches were found on a partially burnt bed, suggesting accidental deaths. Careful scene analysis and forensic post-mortems demonstrated that this was a multiple murder rather than an accident.

  3. A method for sintering

    DEFF Research Database (Denmark)

    2012-01-01

    The present invention provides a method for sintering, comprising in the following order the steps of: providing a body in the green state or in the pre-sintered state on a support; providing a load on at least one spacer on the support such that the load is located above said body in the green...

  4. A Work in Progress

    Science.gov (United States)

    Steiny, Julia

    2009-01-01

    Sparking a flame of mutual professional development at Twin Groves Middle School, in Illinois' Kildeer District 96 was a formative assessment. "Formatives," as the practitioners call them, are a technique usually adopted as a safety net for struggling students. But as districts are finding out, they are also effective at honing teacher practice.…

  5. A Trio in Plano.

    Science.gov (United States)

    Boland, Sandra K.

    1979-01-01

    The article briefly highlights a few of the experiences of a commerical food preparation teacher, an auto body teacher, and a special education aide, who all work together to provide a comprehensive vocational program for mainstreamed handicapped high school students at Plano High School in Plano, Texas. (DLS)

  6. Straw in a Box

    Science.gov (United States)

    Jerrard, Richard; Schneider, Joel; Smallberg, Ralph; Wetzel, John

    2006-01-01

    A problem on a state's high school exit exam asked for the longest straw that would fit in a box. The examiners apparently wanted the length of a diagonal of the box, but the figure accompanying the question suggested otherwise--that the radius of the straw be considered. This article explores that more general problem.

  7. A Reality Check

    DEFF Research Database (Denmark)

    Skovsgaard, Morten; Albæk, Erik; Bro, Peter

    2013-01-01

    Objectivity is a cornerstone in the journalistic profession. There is a widespread acknowledgement that a one-to-one representation of reality is not possible, and thus the norm must be interpreted by journalists in their daily work. Based on a journalist survey among Danish journalists (N=2008) we...

  8. A Material Focus

    DEFF Research Database (Denmark)

    Vallgårda, Anna K. A.; Sokoler, Tomas

    2009-01-01

    In this paper we build on the notion of computational composites, which hold a material perspective on computational technology. We argue that a focus on the material aspects of the technology could be a fruitful approach to achieve new expressions and to gain a new view on the technology's role...

  9. A Model Performance

    Science.gov (United States)

    Thornton, Bradley D.; Smalley, Robert A.

    2008-01-01

    Building information modeling (BIM) uses three-dimensional modeling concepts, information technology and interoperable software to design, construct and operate a facility. However, BIM can be more than a tool for virtual modeling--it can provide schools with a 3-D walkthrough of a project while it still is on the electronic drawing board. BIM can…

  10. A Harmonic Motion Experiment

    Science.gov (United States)

    Gluck, P.; Krakower, Zeev

    2010-01-01

    We present a unit comprising theory, simulation and experiment for a body oscillating on a vertical spring, in which the simultaneous use of a force probe and an ultrasonic range finder enables one to explore quantitatively and understand many aspects of simple and damped harmonic motions. (Contains 14 figures.)

  11. A Spiritual Investment

    Science.gov (United States)

    Borja, Rhea R.

    2005-01-01

    In this article, the author features the Gesu School, a small, inner-city, K-8 Catholic school in Philadelphia. She describes how it has transformed itself since 1993 from a school barely eking out an existence to one with a $5 million--and growing--endowment fund and a powerful, ecumenical board of business executives and other lay people. The…

  12. A Piece of Cake.

    Science.gov (United States)

    Aceto, Jeffrey T.

    1995-01-01

    A civil engineer describes his first day as a substitute teacher. Despite detailed lesson plans and good intentions, maintaining an orderly class environment is far from a "piece of cake." Recess duty is an ordeal, and lunch in the shabby teacher's lounge is uninspiring. The biggest benefit is appreciation of what constitutes a full-time teacher's…

  13. A surface containing a line and a circle through each point is a quadric

    KAUST Repository

    Nilov, Fedor K.

    2012-06-20

    We prove that a surface in 3-dimensional Euclidean space containing a line and a circle through each point is a quadric. We also give some particular results on the classification of surfaces containing several circles through each point. © 2012 Springer Science+Business Media B.V.

  14. A life under pressure

    DEFF Research Database (Denmark)

    Jacobsen, Jens Christian Brings; von Holstein-Rathlou, Niels-Henrik

    2012-01-01

    Microvessels live 'a life under pressure' in several ways. In a literal sense, vessels of the microcirculation are exposed to high levels of stress caused primarily by the intravascular pressure head. In a figurative sense, the individual vessel and the microvascular network as a whole must...

  15. A Cacophony of Crises

    DEFF Research Database (Denmark)

    Schmidt, Johannes Dragsbæk

    2010-01-01

    Abstract A cacophony of crises challenges neoliberalism and marks a fundamental reversal in capitalism itself. This is a systemic failure of the capitalist mode of production to renovate and renew itself through a multiplicity of environmental and resource crises and the financial crises which ha...

  16. Building a Straw Bridge

    Science.gov (United States)

    Teaching Science, 2015

    2015-01-01

    This project is for a team of students (groups of two or three are ideal) to design and construct a model of a single-span bridge, using plastic drinking straws as the building material. All steps of the design, construction, testing and critiquing stages should be recorded by students in a journal. Students may like to include labelled diagrams,…

  17. 13 CFR Appendix A to Subpart A of... - Appendix A to Subpart A of Part 113

    Science.gov (United States)

    2010-01-01

    ..., sec 7(b)(4). Nonfinancial Programs Women's business enterprise Executive Order 12138. Small business... 113 A Appendix A to Subpart A of Part 113 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... Authority Financial Programs Regular business loans Small Business Act, sec. 7(a). Handicapped...

  18. A Spiky Ball

    OpenAIRE

    Naszódi, Márton

    2015-01-01

    The Illumination Problem may be phrased as the problem of covering a convex body in Euclidean $n$-space by a minimum number of translates of its interior. By a probabilistic argument, we show that, arbitrarily close to the Euclidean ball, there is a centrally symmetric convex body of illumination number exponentially large in the dimension.

  19. Listen to a voice

    DEFF Research Database (Denmark)

    Hølge-Hazelton, Bibi

    2001-01-01

    Listen to the voice of a young girl Lonnie, who was diagnosed with Type 1 diabetes at 16. Imagine that she is deeply involved in the social security system. She lives with her mother and two siblings in a working class part of a small town. She is at a special school for problematic youth, and her...

  20. A Financial Marriage

    Institute of Scientific and Technical Information of China (English)

    LAN XINZHEN

    2010-01-01

    @@ Love is in the air as financial church bells ring,ushering in a bonding between CITIC Securities Co.Ltd.land Crédit Agricole S.A.(CASA).The Chinese company and the French bank are planning to establish a global investment bank and strategic brokerage alliance,said a memorandum of understanding signed by the two sides on May 3.

  1. Make a Pinhole Camera

    Science.gov (United States)

    Fisher, Diane K.; Novati, Alexander

    2009-01-01

    On Earth, using ordinary visible light, one can create a single image of light recorded over time. Of course a movie or video is light recorded over time, but it is a series of instantaneous snapshots, rather than light and time both recorded on the same medium. A pinhole camera, which is simple to make out of ordinary materials and using ordinary…

  2. A Mandala's Message

    Science.gov (United States)

    Bonnell, Tom

    2002-01-01

    A Tibetan Buddhist monk, Lama Tenzin, spent a week at the Manhattan private school where the author of this article was the middle school director. Lama Tenzin did not come to introduce students to Buddhism or to explain the plight of the Tibetan people. Instead, he came to create a piece of art that is a specialty of his and his brother monks': a…

  3. A novel concept for a prosthetic hand with a bidirectional interface: a feasibility study.

    Science.gov (United States)

    Cipriani, Christian; Antfolk, Christian; Balkenius, Christian; Rosén, Birgitta; Lundborg, Goran; Carrozza, Maria Chiara; Sebelius, Fredrik

    2009-11-01

    A conceptually novel prosthesis consisting of a mechatronic hand, an electromyographic classifier, and a tactile display has been developed and evaluated by addressing problems related to controllability in prosthetics: intention extraction, perception, and feeling of ownership. Experiments have been performed, and encouraging results for a young transradial amputee are reported.

  4. A battery element

    Energy Technology Data Exchange (ETDEWEB)

    Nakai, M.; Koboyasi, S.; Oisi, K.; Okadzaki, R.; Ota, A.

    1983-07-29

    An anode made of an alkaline or an alkaline earth metal and an electrolyte based on an organic solvent are used in the element. A mixture of Mn203 and Mn304 in a 9 to 1 to 3 to 7 ratio serves as the cathode. The element has a stable discharge curve at a nominal voltage of 1.5 volts.

  5. A disintegrating cosmic string

    CERN Document Server

    Griffiths, J B

    2002-01-01

    We present a simple sandwich gravitational wave of the Robinson-Trautman family. This is interpreted as representing a shock wave with a spherical wavefront which propagates into a Minkowski background minus a wedge. (i.e. the background contains a cosmic string.) The deficit angle (the tension) of the string decreases through the gravitational wave, which then ceases. This leaves an expanding spherical region of Minkowski space behind it. The decay of the cosmic string over a finite interval of retarded time may be considered to generate the gravitational wave.

  6. A rotating quantum vacuum

    Energy Technology Data Exchange (ETDEWEB)

    Lorenci, V.A. de; Svaiter, N.F. [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)

    1996-11-01

    It was investigated which mapping has to be used to compare measurements made in a rotating frame to those made in an inertial frame. Using a non-Galilean coordinate transformation, the creation-annihilation operators of a massive scalar field in the rotating frame are not the same as those of an inertial observer. This leads to a new vacuum state(a rotating vacuum) which is a superposition of positive and negative frequency Minkowski particles. Polarization effects in circular accelerators in the proper frame of the electron making a connection with the inertial frame point of view were analysed. 65 refs.

  7. Doing a Dialogic Dance

    DEFF Research Database (Denmark)

    Frølunde, Lisbeth

    2013-01-01

    , and phenomenological approaches to arts therapy. A general characteristic of using visual methods is that they promote emergence and transformation of meanings. Typically, many associations and metaphors emerge and alter rapidly as people work collaboratively with images and stories in a workshop setting. My...... experience is that the use of visual and narrative methods is a dance with participants, which I conceptualize as a mutual meaning-making process that emerges in a specific context. In the discussion, I consider how I try to develop a dialogic dance inspired by a dialogic understanding of empowerment...

  8. Europe? A speech

    Directory of Open Access Journals (Sweden)

    Gayatri Chakravorty Spivak

    2016-04-01

    Full Text Available My talk has two main points. One is a longstanding desire for continentality by the extreme northwestern edge of our continent, the island of Eurasia. It is a tiny edge and Imperial Europe is even a tiny edge of that one. The other point is a desire for a self, a mastership of interpellation. To be the master of “Hey you,” which is what interpellation is. The one hailed thinks s/he is the right person. There is thus a complicity in interpellation, culturalism allows us to forget that.

  9. A construction and a tension element comprising a cable and a plurality of strakes

    DEFF Research Database (Denmark)

    2014-01-01

    The invention provides a construction comprising a structural element and at least one cable (100) arranged in tension to carry at least a part of the weight of the structural element. The cable defines an outer surface (102) onto which a plurality of strakes (104) form protrusions for reducing...... rain and wind induced vibrations. Each strake has a height being a distance from a strake root part connected to the outer surface of the cable and a strake end part terminating the strake outwards form the cable, a width being transverse to the height, and a length transverse to the height and width...... and along which length the strake is connected to the cable. The length of each strake is shorter than the circumference of the outer surface, and the height is less than 5 percent of the diameter of the cable....

  10. Tulipalin A induced phytotoxicity.

    Science.gov (United States)

    McCluskey, James; Bourgeois, Marie; Harbison, Raymond

    2014-04-01

    Tulipalin A induced phytotoxicity is a persistent allergic contact dermatitides documented in floral workers exposed to Alstroemeria and its cultivars.[1] The causative allergen is tulipalin A, a toxic glycoside named for the tulip bulbs from which it was first isolated.[2] The condition is characterized by fissured acropulpitis, often accompanied by hyperpigmentation, onychorrhexis, and paronychia. More of the volar surface may be affected in sensitized florists. Dermatitis and paronychia are extremely common conditions and diagnostic errors may occur. A thorough patient history, in conjunction with confirmatory patch testing with a bulb sliver and tuliposide A exposure, can prevent misdiagnosis. We report a case of Tulipalin A induced phytotoxicity misdiagnosed as an unresolved tinea manuum infection in a patient evaluated for occupational exposure.

  11. A strain gauge

    DEFF Research Database (Denmark)

    2016-01-01

    The invention relates to a strain gauge of a carrier layer and a meandering measurement grid positioned on the carrier layer, wherein the strain gauge comprises two reinforcement members positioned on the carrier layer at opposite ends of the measurement grid in the axial direction....... The reinforcement members are each placed within a certain axial distance to the measurement grid with the axial distance being equal to or smaller than a factor times the grid spacing. The invention further relates to a multi-axial strain gauge such as a bi-axial strain gauge or a strain gauge rosette where each...... of the strain gauges comprises reinforcement members. The invention further relates to a method for manufacturing a strain gauge as mentioned above....

  12. Brucellosis: a political disease

    Science.gov (United States)

    Smith, B.; Roffe, T.J.

    1992-01-01

    With the challenges confronting North America's elk herds today, a bacteria that causes a nonfatal disease in a few elk herds seems an unlikely addition to the list. Fragmentation of habitat, dwindling bull-cow ratios, grazing competition from livestock on public rangelands, or the crowding of favorite hunting spots all seem like far more urgent matters to elk junkies. But a twist of fate an a national campaign to eradicate this seemingly innocuous bacterium have put brucellosis on the front burner.

  13. Being a Vegetarian

    Institute of Scientific and Technical Information of China (English)

    JAMES; CHOLES

    2011-01-01

    Along with a couple of old schoolfriends,I made my first visit to China in 1997,backpacking through the spellbinding karst landscapes of Guangxi.For one reason or another it took me 10 years to return to China,this time to become a business English teacher in Hangzhou,Zhejiang Province.The author is a Briton living in Hangzhou A long with a couple of old school-friends,

  14. Scleroderma. A case presentation.

    Directory of Open Access Journals (Sweden)

    Rubén Bembibre Taboada

    2005-08-01

    Full Text Available This article presents a brief review about generalized sclerosis (sclerodermia and reports a case with such disease talking into consideration that the patient received clinical intensive care assistaance and had a clinical diagnosis supoported by lab test for a clinical and differential diagnosis. Medical treatment was applied for the disease and for the possible complications, but the patients follow up was wrong due to multi organ failure as a consequence of derlying disease.

  15. Journalism in a Network

    OpenAIRE

    Singer, J.

    2011-01-01

    The occupation of journalism has changed very dramatically very fast. Until the 1990s, journalists produced content for a single outlet, such as a newspaper or television program, and they produced it in a single format – printed words, say, or sound, or moving images. Most of them worked in stable media industries that, thanks largely to a lucrative advertising-based revenue model, had been highly profitable for decades if not centuries, and they had something close to a monopoly on providin...

  16. A Homey Place

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ Warm autumn sunlight slanted into the Globe Café of Mercure Wanshang Beijing hotel through its floor-to-ceiling windows. Sitting at a table overlooking a large garden, Mary Gob, the hotel's general manager, talked about her hotel. Mercure is a brand under Accor, a leading international hotel group originating in France. Accor operates a portfolio of about 15 brands ranging from luxury to economy, including Sofitel, Pullman, Novotel, Grand Mercure and Mercure, which spread over 90 countries in the world.

  17. ORGANIC CATATONIA: A REVIEW

    OpenAIRE

    Ahuja, Niraj

    2000-01-01

    Catatonia is a clinical syndrome associated with a wide variety of psychiatric, medical and neurological disorders. Despite several reports in the literature of a wide range of medical and neurological diseases causing catatonia, there has been a tendency to consider catatonia as purely psychiatric disorder. The review attempts to look at the concept of organic catatonia from a historical viewpoint, including its place in the psychiatric classification, discusses the various etiological cause...

  18. A Fibonacci quotient

    Science.gov (United States)

    Griffiths, Martin; Rajagopal, Surajit

    2016-01-01

    In this article, we describe the outcome of a mathematical collaboration between a university lecturer and an undergraduate student. The resulting investigation concerned a particular divisibility property of the Fibonacci numbers, and indeed it seems that a new result was found in this regard. An interesting point to be made here is that, although the mathematical content was relatively straightforward, this joint exploration did, in a very modest sense, mirror certain key aspects of the research process.

  19. have a hollow leg

    Institute of Scientific and Technical Information of China (English)

    周立

    2003-01-01

    英语对话 A:We must prevent our family members from getting involved with drugs, really. B:That’s a sure thing.We must make sure that they never involve them- selves with that. A:By the way,does your husband drink a lot? B:Yeah.That’s the only thing that keeps worrying me.And he often boasts that he has a hollow leg and nobody can drink him under the ta- ble.

  20. A fermionic spacetime cage

    CERN Document Server

    Lin, De-Hone

    2015-01-01

    This paper is concerned with the application of a spacetime structure to a three-dimensional quantum system. There are three components. First, the main part of this paper presents the constraint conditions which build the relation of a spacetime structure and a form invariance solution to the covariant Dirac equation. The second is to devise a spacetime cage for fermions with chosen constraints. The third part discusses the feasibility of the cage with an experiment.

  1. Homosexuality: A Review

    OpenAIRE

    Gold, Judith H.

    1983-01-01

    Homosexuality is a sexual preference which arouses a great deal of hostility, is surrounded by myths, and is often viewed as a disease. In separating fact from fantasy, family physicians will be better able to treat the approximately 10% of their patients who are homosexual. Recent studies show that homosexuals lead a variety of lifestyles, do not suffer from more psychiatric illness than do heterosexuals, but are susceptible to stresses induced by a hostile society.

  2. Man Is a Paradox

    Institute of Scientific and Technical Information of China (English)

    王茂娟

    2009-01-01

    In the poem "Always", the author Pablo Neruda employs the first person narration to incisively reveal the paradoxical traits in human nature by exploring man in relation to love. "I" play a role shifting from a calm narrator to a furious one, and the last recovering to a mild one, which offers a multiple visual angle to observe humanity. In sum, by means of continuous changes of my inner feelings in the poem, Pablo Neruda reveals the paradoxical humanity .

  3. A Continuous Act...

    Directory of Open Access Journals (Sweden)

    Nico Jenkins

    2013-05-01

    Full Text Available Traditionally, a wayzgoose was a celebration at the end of a printer’s year, a night off in the late fall before the work began of printing by candlelight. According to the OED, the Master Printer would make for the journeymen “a good Feast, and not only entertains them at his own House, but besides, gives them Money to spend at the Ale-house or Tavern at Night.”

  4. A Witty Answer

    Institute of Scientific and Technical Information of China (English)

    王秀军

    2005-01-01

    One hot summer day, a student in a sweat, fanning himself with a book, asked his teacher, "It's rather hot in the classroom. May I wear shorts while having classes, Sir?" "It doesn't matter whether you wear shorts or not, but I must let you know, when you enter the classroom, you must wear a pair of trousers," he teacher replied.A Witty Answer!河北@王秀军

  5. A KILLER WITH LOVE

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Leon is a 1994 French action film. This movie is about a tough girl named Mathilda who wants to become a professional killer when her entire families are killed by a vicious government agent. At the same time, she meets the man-Leon, a professionally paid killer, who she chooses as her teacher. Eventually, she becomes soul mate of Leon. At the end of the film, Leon even dies for saving Mathlida.

  6. Smile: A review

    Directory of Open Access Journals (Sweden)

    W S Manjula

    2015-01-01

    Full Text Available "Beauty is in the mind of the beholder, each mind perceives a different beauty" famously said by writer Margeret Wolfe Hungerford. A beautiful smile is a gateway to the world. The aim of this article was to identify the criteria for designing the perfect smile. It was determined, smile design is a multifactorial process and various steps are involved in designing a radiant smile.

  7. Resilience - A Concept

    Science.gov (United States)

    2016-04-05

    same construct. If resil- iency of a system equates to the health of a person , then maybe there should be resiliency indices similar to health ... Image designed by Diane Fleischer Resilience—A CONCEPT Col Dennis J. Rensel, USAF (Ret.) Resilience takes on many definitions and ideas depending...as biomedical indices provide an indication, a concept of a person’s health . This process or concept of assessing one’s health can be equated to

  8. Carcinoma in a fibroadenoma.

    Directory of Open Access Journals (Sweden)

    Sarela A

    1995-01-01

    Full Text Available A carcinoma arising within a fibroadenoma is an unusual occurrence, with only a little over 100 reported cases. The purpose of this report is to increase the awareness of this entity and to discourage the practice of rendering a diagnosis on gross examination of the tumor. We are reporting a case with two distinct primary tumors within the same breast, one of which was arising within the fibroadenoma. Only two such cases have been previously reported.

  9. Surfing a Standing Wave

    Science.gov (United States)

    de Campos Valadares, Eduardo; Alves, Esdras Garcia

    2005-05-01

    Local "reversal of gravity" can be simulated with an inverted pendulum whose pivot is made to oscillate vertically. A beautiful demonstration of this surprising effect can be found in Ref. 1. In this case, the pendulum is a piece of plastic straw and its pivot pin is fixed at the end of a plastic ruler that is made to oscillate vertically by a small eccentric motor. A theoretical treatment of this inverted pendulum may be found in Ref. 2.

  10. A Telephone Call

    Institute of Scientific and Technical Information of China (English)

    王晓兰

    2004-01-01

    At about two o'clock on a cold winter morning, a doctor drove seven miles in answer to a telephone call. On his coming the man who had called him in said, “Doctor, I don't have a sore throat, I don't cough.I have no pain either in the side or in the back, I'm not running a temperature, but still I feel that death is near.”

  11. Orofacial syndromes: A review

    Directory of Open Access Journals (Sweden)

    N Shyam Sunder

    2011-01-01

    Full Text Available A syndrome is a set of signs and symptoms that tend to occur together and reflect the presence of a particular disease or an increased chance of developing to a particular disease. There are numerous orofacial syndromes and a thorough knowledge of their manifestations and implications is pertinent in good oral health care delivery. The aim of this review is to describe collective esoteric knowledge, about various malformations and syndromes associated with orofacial region.

  12. A deceiving wheeze.

    LENUS (Irish Health Repository)

    Chotirmall, S H

    2009-08-07

    \\'Wheeze\\' is a common symptom in both paediatric and adult populations. Unexplained wheeze is concerning and warrants investigation. We present a case of a young girl with childhood asthma suffering with \\'persistent wheeze\\'. This was explained by the presence of a dual aortic arch which only became apparent during her teenage years. This report serves as a reminder to all clinicians that "not all that wheezes is asthma".

  13. A Smile for Belle

    Institute of Scientific and Technical Information of China (English)

    孔雪伟

    2004-01-01

    A tiny, two-year-old blonde, recovering from surgical removal (外科切除) of her cancerous left eye, discovers in her mailbox a brightly colored package with a big sticker of hugging bears under a rainbow. Tearing open the box, Belle cries "Mama, look, it's teddy bears! " The bears (and the goodie package of gifts) bring about something that hadn't happened in quite a while: Belle smiles!

  14. Is translation a linguistic or a cultural process? Is translation a linguistic or a cultural process?

    OpenAIRE

    2008-01-01

    The English term "linguistic" has a general and a special meaning. In ordinary or standard language "Gemeinsprache") linguistic means "of language", "belonging to language" ("sprachlich"), language taken in its everyday meaning, as in English language, German language etc. Thus, an expression like a linguistic sign may be paraphrased by a sign of language or, in more technical language, a verbal sign ("ein sprachliches Zeichen"), something one says or writes. Language has another, broader, al...

  15. A Career At Home

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Dai Ping, whose son is a first grader in a primary school in Beijing, has noticed a growing number of higher educated stay-at-home mothers around her community. Currently, 11 children in her son's 44-student class have stay-at-home mothers. Dai, a biology major, once worked at a research institute in the United States in the prime of her career before choosing to raise her son at home.

  16. With a little help from a... machine

    DEFF Research Database (Denmark)

    From, Ditte-Marie

    2015-01-01

    with machine creates a stronger focus on (self-) maintenance of physical health, diminishing social and mental aspects of health care. These hypotheses divide the article into three main parts. The first scrutinises policy documents behind the emergence of digital welfare technologies, and their presented......This article discusses the role of technology as a new political welfare strategy in relation to health care, health promotion, and human welfare. The transitions into the era of digital welfare and the implementation of welfare technologies alter previous notions of treatment, prevention...... in the hands of health professionals, the patient is designated greater responsibility. This means that with the introduction of digital welfare technologies, that is, telemedicine, human interaction between health professionals and patients is transformed, and in some cases is absent. Replacing man...

  17. Does a University graduate need a portfolio?

    Directory of Open Access Journals (Sweden)

    Mertins Kseniya

    2017-01-01

    Full Text Available Every year an increasing number of employers get interested in the university graduates, most suitable for the requirements the companies set. However, the standard CVs often do not reveal the potential and peculiarities of formation of graduate competences. The authors suggest using portfolio instead of a CV. The authors analyzed 1797 portfolios of TPU students and offered optimal structure and criteria of portfolio. In addition, the authors provide an example of how the achievements reflected in portfolio can be considered. The conclusion is made about the necessity of the portfolio. The authors determined employer’s role in the formation and evaluation of the portfolio. Moreover, the value of tracking the dynamics of growth of portfolio components is denoted as a new performance evaluation system in higher education.

  18. Artefacts: a diagnostic dilemma - a review.

    Science.gov (United States)

    Rastogi, Varun; Puri, Naveen; Arora, Swati; Kaur, Geetpriya; Yadav, Lalita; Sharma, Rachna

    2013-10-01

    The significance of proper handling of biopsy specimens is important and obvious for any histopathological diagnosis. Accuracy of tissue diagnosis by the pathologists is heavily dependent upon the competence of histotechnologists. The aim of a good histopathological technique is to produce microscopic preparation of tissues, usually stained, that represents as closely as possible, their structures in life. But this is not always possible and some sort of tissue morphology is bound to be seen. The ability of oral pathologists in interpreting a biopsy correctly is directly proportional not only to the quality, but also to the quantity of the specimen. There are many ways through which the exact interpretation of tissue specimen becomes compromised and the major pitfall is the presence of artefacts. These artefacts may occur during surgical removal, fixation, processing, embedding, microtomy and staining procedures. It is therefore important to identify the common occurring artefacts during interpretation of oral biopsies.

  19. Without a vision, a business may perish.

    Science.gov (United States)

    Iemmolo, G R

    1995-11-01

    The process described is not only viable for a company, but also can be used by any group that is gathered to perform any task. The process serves to explore strengths and weaknesses so the group can use one and shore up the other. It looks at the outside forces that may affect the work and allows the group to place its effort in the areas it can influence. By looking at what is or about to occur, the process may be able to create synergism or prevent disaster. A vision or direction statement that many if not all had some input into is easier to understand and support. Referral to these benchmarks or compass points makes the journey easier.

  20. Imparare a leggere a tre anni

    Directory of Open Access Journals (Sweden)

    Vittorio Midoro

    2017-01-01

    Full Text Available Imparare a leggere precocemente può contribuire enormemente allo sviluppo cognitivo e affettivo dei bambini. A partire da questo assunto, in questo contributo sono descritti, da un lato, una metodologia e una serie di strumenti per l’apprendimento precoce della lettura e, dall’altro, una sperimentazione condotta con bambini con o senza problemi di linguaggio. La metodologia appartiene alla famiglia dei metodi sintetici, in cui si imparano prima gli elementi più semplici sprovvisti di significato e poi il significato, ed è basata giochi che il genitore fa con il bambino, con l’uso di materiali di vario genere, digitali e non. La sperimentazione, condotta nell’arco di un anno e mezzo, ha messo in luce la praticabilità del metodo, ottenendo risultati che vanno al di là dell’apprendimento della lettura per investire aspetti rilevanti dello sviluppo dei bambini.

  1. Decommissioning: a problem or a challenge?

    Directory of Open Access Journals (Sweden)

    Mele Irena

    2004-01-01

    Full Text Available With the ageing of nuclear facilities or the reduced interest in their further operation, a new set of problems, related to the decommissioning of these facilities, has come into forefront. In many cases it turns out that the preparations for decommissioning have come too late, and that financial resources for covering decommissioning activities have not been provided. To avoid such problems, future liailities should be thoroughly estimated in drawing up the decommissioning and waste management programme for each nuclear facility in time, and financial provisions for implementing such programme should be provided. In this paper a presentation of current decommissioning experience in Slovenia is given. The main problems and difficulties in decommissioning of the Žirovski Vrh Uranium Mine are exposed and the lesson learned from this case is presented. The preparation of the decommissioning programme for the Nuclear Power Plant Krško is also described, and the situation at the TRIGA research reactor is briefly discussed.

  2. A SURGICAL SURPRISE: A RARE CASE REPORT

    Directory of Open Access Journals (Sweden)

    Jaya Shree

    2014-08-01

    Full Text Available Implantation of the blastocyst anywhere else other than the uterine cavity is ectopic pregnancy. Ovarian Pregnancy is one of the rare forms of an ectopic pregnancy. The incidence of ovarian pregnancy is 0.15 to 3 % 1 of all ectopic pregnancies. Here we present a case of ruptured ovarian pregnancy, which was preoperatively diagnosed as ruptured tubal pregnancy and later found to be an ovarian pregnancy at laparotomy.

  3. A MONOGRAPH OF CARYODAPHNOPSIS A. SHAW

    Directory of Open Access Journals (Sweden)

    a. j. g. h. kostermans

    1974-12-01

    Full Text Available Of the genus Caryodapknopaia 7 species are known, of which twoare described here for the first time. The genus occurs from Yunnanto Indochina, with the exception of C. tonkinensis, which goes as far asthe Philippines and Borneo. Apparently most species are distributed bywater and C.tonkinensis is assumed to have spread from the mainlandto Borneo during the glacial period, when a land connection existed.The genus is related to Nothaphoebe and Alseodaphne and hencebelongs to Perseae.

  4. A strange Evans syndrome: a case report

    OpenAIRE

    Le Scanff, Julie; Durupt, Stéphane; Bailly, François,; Rode, Agnès; Sève, Pascal

    2009-01-01

    Hepatic angiosarcoma is a rare malignant vascular tumor, which accounts for up to 2% of all primary liver tumors. The most frequent symptoms on presentation are weight loss, weakness and abdominal pain. Diagnosis of diffuse hepatic angiosarcoma can be challenging. We report an original case of diffuse liver angiosarcoma revealed by haematological abnormalities initially diagnosed as an Evans syndrome. Anaemia and thrombocytopenia are rarely the first manifestations of this pathology. They are...

  5. About (above) a face - a face

    OpenAIRE

    2009-01-01

    This text intents to unfold some considerations regardind the perception of the image of the Lóri’s face, from the book Uma aprendizagem ou o livro dos prazeres, published by Clarice Lispector in 1969. For that, will be studied the politicians devices who involve the apprehension of the face as a qualifying of the subject and, at the same time, its relation with the lenguage.

  6. A prototype of a high rating MRPC

    Institute of Scientific and Technical Information of China (English)

    WANG Yi; WANG Jing-Bo; YAN Qiang; LI Yuan-Jing; CHENG Jian-Ping; YUE Qian; LI Jin

    2009-01-01

    Six-gap resistive plate chamber (MRPC) prototypes with semiconductive glass electrodes (bulk resistivity~1010.cm) were studied for suitability in time-of-flight (TOF) applications at high rates. These studies were performed using a continuous electron beam of 800 MeV at IHEP and an X-ray machine. Time resolutions of about 100 ps and efficiencies larger than 90% were obtained for flux densities up to 28 kHz/cm2.

  7. About (above a face - a face

    Directory of Open Access Journals (Sweden)

    Diego Cervelin

    2009-07-01

    Full Text Available This text intents to unfold some considerations regardind the perception of the image of the Lóri’s face, from the book Uma aprendizagem ou o livro dos prazeres, published by Clarice Lispector in 1969. For that, will be studied the politicians devices who involve the apprehension of the face as a qualifying of the subject and, at the same time, its relation with the lenguage.

  8. A computational system for a Mars rover

    Science.gov (United States)

    Lambert, Kenneth E.

    1989-01-01

    This paper presents an overview of an onboard computing system that can be used for meeting the computational needs of a Mars rover. The paper begins by presenting an overview of some of the requirements which are key factors affecting the architecture. The rest of the paper describes the architecture. Particular emphasis is placed on the criteria used in defining the system and how the system qualitatively meets the criteria.

  9. A fascinating field and a pragmatic enterprise

    DEFF Research Database (Denmark)

    Hjørland, Birger

    2013-01-01

    A reviewer wrote about the book: "I synnerhet Hjørlands kapitel väcker frågor om fältets inriktning och framtid som det hade varit intressant om redaktörerna hade fångat upp och diskuterat i ett avslutande och syntetiserande kapitel. Detta hade kunnat lyfta denna konferensantologi till något mer ...

  10. Cyberbullying : a storm in a teacup?

    OpenAIRE

    Wolke, Dieter; Lee, Kirsty; Guy, Alexa

    2017-01-01

    Cyberbullying has been portrayed as a rising ‘epidemic’ amongst children and adolescents. But does it create many new victims beyond those already bullied with traditional means (physical, relational)? Our aim was to determine whether cyberbullying creates uniquely new victims, and whether it has similar impact upon psychological and behavioral outcomes for adolescents, beyond those experienced by traditional victims. This study assessed 2745 pupils, aged 11–16, from UK secondary schools. Pup...

  11. A "broken heart" on a cruise ship.

    Science.gov (United States)

    Taylor, Christopher

    2015-01-01

    An elderly female cruise ship passenger developed chest pain shortly after an emotionally charged incident involving shipboard authorities. The electrocardiogram and cardiac enzyme profile were indicative of myocardial infarction but the final diagnosis, established after aeromedical evacuation, was stress-related cardiomyopathy. This case is an example of a relatively unknown clinical entity that is easily mistaken for acute myocardial infarction and which may be disproportionately prevalent in the cruise ship passenger population.

  12. What Makes a Protein Sequence a Prion?

    Science.gov (United States)

    Sabate, Raimon; Rousseau, Frederic; Schymkowitz, Joost; Ventura, Salvador

    2015-01-01

    Typical amyloid diseases such as Alzheimer's and Parkinson's were thought to exclusively result from de novo aggregation, but recently it was shown that amyloids formed in one cell can cross-seed aggregation in other cells, following a prion-like mechanism. Despite the large experimental effort devoted to understanding the phenomenon of prion transmissibility, it is still poorly understood how this property is encoded in the primary sequence. In many cases, prion structural conversion is driven by the presence of relatively large glutamine/asparagine (Q/N) enriched segments. Several studies suggest that it is the amino acid composition of these regions rather than their specific sequence that accounts for their priogenicity. However, our analysis indicates that it is instead the presence and potency of specific short amyloid-prone sequences that occur within intrinsically disordered Q/N-rich regions that determine their prion behaviour, modulated by the structural and compositional context. This provides a basis for the accurate identification and evaluation of prion candidate sequences in proteomes in the context of a unified framework for amyloid formation and prion propagation. PMID:25569335

  13. University Branding: A Myth or a Reality

    Directory of Open Access Journals (Sweden)

    Amran Bin Md. Rasli

    2012-06-01

    Full Text Available will differentiate it from others. University brand, in fact, is the perception and reputation developed in the minds of the people about the university or institution. It is the reaction appears in the minds of the people when they hear or see a name or symbol of someuniversity or institute. This research aimed to identify key factors that are required to be taken care of while developing university branding strategy. For this research a deductive approach is adopted, as the main objective of this research is to investigate the influenceof attributes like awareness, acceptance, and quality on brand image of universities, therefore, it is proposed to conduct semi structured interviews which are considered to be a most suitable for testing of influence of different attributes on brand image. The components used in the study are awareness, acceptance, prestige, incentives and quality. The result of the study shows that in the university selection decision, image of the university is the key determinant. The result also shows that the image of the university has four key constructing factors which are quality, prestige, financial incentives, and acceptance. Quality is found to be the strongest construct followed by prestige, acceptance and incentives.

  14. A road safety course with a difference!

    CERN Multimedia

    2008-01-01

    Are you feeling brave? Then why not sign up for a road safety session. 10 to 14 November is road safety week at CERN and the Touring Club Suisse (TCS) will be in the Main Building, 500, with several hair-raising activities to try. If you walk into the foyer of building 500 between 10 and 14 November you might, at first glance, think that you have walked into a fairground. But the machines designed to spin you upside down and slide you also are actually part of CERN’s road safety week. Every day during the week there will six sessions each lasting about an hour where you can try out a series of exhilarating activities. If you are feeling brave enough you could try and get yourself out of the crash simulator. Not as easy as it sounds - after being spun over several times you can experience what it’s like to try and escape from an overturned car - dangling upside down attached only by your seatbelt! During the course instructors from the Touring Club Suisse (TC...

  15. Creating a Universe, a Conceptual Model

    Directory of Open Access Journals (Sweden)

    James R. Johnson

    2016-10-01

    Full Text Available Space is something. Space inherently contains laws of nature: universal rules (mathematics, space dimensions, types of forces, types of fields, and particle species, laws (relativity, quantum mechanics, thermodynamics, and electromagnetism and symmetries (Lorentz, Gauge, and symmetry breaking. We have significant knowledge about these laws of nature because all our scientific theories assume their presence. Their existence is critical for developing either a unique theory of our universe or more speculative multiverse theories. Scientists generally ignore the laws of nature because they “are what they are” and because visualizing different laws of nature challenges the imagination. This article defines a conceptual model separating space (laws of nature from the universe’s energy source (initial conditions and expansion (big bang. By considering the ramifications of changing the laws of nature, initial condition parameters, and two variables in the big bang theory, the model demonstrates that traditional fine tuning is not the whole story when creating a universe. Supporting the model, space and “nothing” are related to the laws of nature, mathematics and multiverse possibilities. Speculation on the beginning of time completes the model.

  16. Once a Treg, always a Treg?

    Science.gov (United States)

    Sawant, Deepali V.; Vignali, Dario A. A.

    2014-01-01

    Summary Regulatory T cells (Tregs) prevail as a specialized cell lineage that has a central role in the dominant control of immunological tolerance and maintenance of immune homeostasis. Thymus-derived Tregs (tTregs) and their peripherally-induced counterparts (pTregs) are imprinted with a unique Foxp3-dependent and independent transcriptional and epigenetic characteristics that bestows on them the ability to suppress disparate immunological and non-immunological challenges. Thus, unidirectional commitment and the predominant stability of this regulatory lineage is essential for their unwavering and robust suppressor function and has clinical implications for the use of Tregs as cellular therapy for various immune pathologies. However, recent studies have revealed considerable heterogeneity or plasticity in the Treg lineage, acquisition of alternative effector or hybrid fates, and promotion rather than suppression of inflammation in extreme contexts. In addition, the absolute stability of Tregs under all circumstances has been questioned. Since these observations challenge the safety and efficacy of human Treg therapy, the issue of Treg stability versus plasticity continues to be enthusiastically debated. In this review, we assess our current understanding of the defining features of Foxp3+ Tregs, the intrinsic and extrinsic cues that guide development and commitment to the Treg lineage, and the phenotypic and functional heterogeneity that shapes the plasticity and stability of this critical regulatory population in inflammatory contexts. PMID:24712466

  17. JERUSALEM: A TALE OF A CITY

    Directory of Open Access Journals (Sweden)

    M. Alaa Mandour

    2012-04-01

    Full Text Available World class cities are few and far between, sometimes referred to as ‘global cities’ or simply ‘world cities’. There are no more than a dozen metropolitan areas in the world that can claim  this kind of global status. London,  New  York,  Paris,  and  Tokyo  sit  at  the  top  of  this  world  city  hierarchy. They  have  enormous concentrations of economic, political, and cultural clout – measured by such things as the number of corporate headquarters, the size of their stock exchanges, the presence of national and international political bodies, and their role in music, fashion, and other cultural activities. What would it take to make a city claimed by two nations and central to three religions “merely” a city, a place of difference and diversity in which contending ideas and citizenries can co-exist in benign yet creative ways? The intractable conflicts in the Middle East and the cycle of violence among Israelis and Palestinians are deeply embedded in historical struggles over national sovereignty and the right to territory. For this reason, questions about whose state will prevail in what physical location have defined the terms of conflict and negotiation. This also has meant that most proposed solutions to  “the  Middle  East  problem”  have  revolved  around  competing  claims  of  nation-states,  their  rights  to existence, and their physical and juridically-sanctioned relationships to each other. While true generally, this framing of the problem has been especially dominant in the case of Jerusalem, a city that is geographically and historically an overlay of spaces and artifacts that carry deep meaning for competing peoples and nations. The current struggles of Palestinians and Israelis to each claim this hallowed ground as their capital city has added yet another layer of complexity, conflict, and political division, all of which is reflected in the competing/dual nomenclature Al

  18. Toward a computational hermeneutics

    Directory of Open Access Journals (Sweden)

    John W Mohr

    2015-11-01

    Full Text Available We describe some of the ways that the field of content analysis is being transformed in an Era of Big Data. We argue that content analysis, from its beginning, has been concerned with extracting the main meanings of a text and mapping those meanings onto the space of a textual corpus. In contrast, we suggest that the emergence of new styles of text mining tools is creating an opportunity to develop a different kind of content analysis that we describe as a computational hermeneutics. Here the goal is to go beyond a mapping of the main meaning of a text to mimic the kinds of questions and concerns that have traditionally been the focus of a hermeneutically grounded close reading, a reading that focuses on what Kenneth Burke described as the poetic meanings of a text. We illustrate this approach by referring to our own work concerning the rhetorical character of US National Security Strategy documents.

  19. A Rotating Quantum Vacuum

    CERN Document Server

    De Lorenci, V A

    1996-01-01

    We investigate which mapping we have to use to compare measurements made in a rotating frame to those made in an inertial frame. Using a "Lorentz-like" coordinate transformation we obtain that creation-anihilation operators of a massless scalar field in the rotating frame are not the same as those of an inertial observer. This leads to a new vacuum state (a rotating vacuum) which is a superposition of positive and negative frequency Minkowski particles. After this, introducing an apparatus device coupled linearly with the field we obtain that there is a strong correlation between number of rotating particles (in a given state) obtained via canonical quantization and via response function of the rotating detector. Finally, we analyse polarization effects in circular accelerators in the proper frame of the electron making a connection with the inertial frame point of view.

  20. A Space Apart

    Directory of Open Access Journals (Sweden)

    Lisa Lynch

    2017-01-01

    Full Text Available This article examines how the preschool child is enabled to withdraw from the peer group and create a private, individual space within the institutional collective. The question under consideration is, “What factors are necessary to enable a child to create and maintain a withdrawal space in the preschool?” Data were collected through ethnographic fieldwork at two Montessori schools in the south of Sweden. Analysis of the results reveals that a child is enabled through a combination of two elements: a level of opportunity to create a space and a level of defense of a created space. These two factors are dependent on the teachers’ ability to correctly identify space creation, alongside their desire for the child’s space creation effort to be successful.

  1. Developing a policy manual.

    Science.gov (United States)

    Hotta, Tracey A

    2013-01-01

    Do you really need to have a policy and procedure in the office? Frequently they are seen sitting on the shelf, collecting dust. The answer is yes for a number of very important reasons. A policy and procedure manual is a tool to set guidelines and expectations on the basis of the mission and vision of the office. A well-written manual is a powerful training tool for new staff so they can get a feel for the office culture. Furthermore, it is a provincial or state legislative requirement that can reduce management's concern about potential legal issues or problems. If an office does not have a manual to set guidelines, the employees may be forced to make their own decisions to solve problems, which can often result in confusion, inconsistencies, and mistakes.

  2. What is a segment?

    Science.gov (United States)

    Hannibal, Roberta L; Patel, Nipam H

    2013-12-17

    Animals have been described as segmented for more than 2,000 years, yet a precise definition of segmentation remains elusive. Here we give the history of the definition of segmentation, followed by a discussion on current controversies in defining a segment. While there is a general consensus that segmentation involves the repetition of units along the anterior-posterior (a-p) axis, long-running debates exist over whether a segment can be composed of only one tissue layer, whether the most anterior region of the arthropod head is considered segmented, and whether and how the vertebrate head is segmented. Additionally, we discuss whether a segment can be composed of a single cell in a column of cells, or a single row of cells within a grid of cells. We suggest that 'segmentation' be used in its more general sense, the repetition of units with a-p polarity along the a-p axis, to prevent artificial classification of animals. We further suggest that this general definition be combined with an exact description of what is being studied, as well as a clearly stated hypothesis concerning the specific nature of the potential homology of structures. These suggestions should facilitate dialogue among scientists who study vastly differing segmental structures.

  3. Training a quantum optimizer

    Science.gov (United States)

    Wecker, Dave; Hastings, Matthew B.; Troyer, Matthias

    2016-08-01

    We study a variant of the quantum approximate optimization algorithm [E. Farhi, J. Goldstone, and S. Gutmann, arXiv:1411.4028] with a slightly different parametrization and a different objective: rather than looking for a state which approximately solves an optimization problem, our goal is to find a quantum algorithm that, given an instance of the maximum 2-satisfiability problem (MAX-2-SAT), will produce a state with high overlap with the optimal state. Using a machine learning approach, we chose a "training set" of instances and optimized the parameters to produce a large overlap for the training set. We then tested these optimized parameters on a larger instance set. As a training set, we used a subset of the hard instances studied by Crosson, Farhi, C. Y.-Y. Lin, H.-H. Lin, and P. Shor (CFLLS) (arXiv:1401.7320). When tested, on the full set, the parameters that we find produce a significantly larger overlap than the optimized annealing times of CFLLS. Testing on other random instances from 20 to 28 bits continues to show improvement over annealing, with the improvement being most notable on the hardest instances. Further tests on instances of MAX-3-SAT also showed improvement on the hardest instances. This algorithm may be a possible application for near-term quantum computers with limited coherence times.

  4. A Braitenberg Lizard:

    DEFF Research Database (Denmark)

    Shaikh, Danish; Hallam, John; Christensen-Dalsgaard, Jakob;

    2009-01-01

    The peripheral auditory system of a lizard is structured as a pressure difference receiver with strong broadband directional sensitivity. Previous work has demonstrated that this system can be implemented as a set of digital filters generated by considering the lumped-parameter model of the audit......The peripheral auditory system of a lizard is structured as a pressure difference receiver with strong broadband directional sensitivity. Previous work has demonstrated that this system can be implemented as a set of digital filters generated by considering the lumped-parameter model...

  5. A neural flow estimator

    DEFF Research Database (Denmark)

    Jørgensen, Ivan Harald Holger; Bogason, Gudmundur; Bruun, Erik

    1995-01-01

    This paper proposes a new way to estimate the flow in a micromechanical flow channel. A neural network is used to estimate the delay of random temperature fluctuations induced in a fluid. The design and implementation of a hardware efficient neural flow estimator is described. The system...... is implemented using switched-current technique and is capable of estimating flow in the μl/s range. The neural estimator is built around a multiplierless neural network, containing 96 synaptic weights which are updated using the LMS1-algorithm. An experimental chip has been designed that operates at 5 V...

  6. A Lucky Escape

    Institute of Scientific and Technical Information of China (English)

    王道庚

    2009-01-01

    @@ This story concerns(有关)a spider(蜘蛛)and a certain general of ancient times who had lost a battle and,in the company of(在……陪同下)a faithful(忠诚的)servant,was trying to escape(逃脱)from the enemy.Both were extremely(极度,非常)tired,and both were hungry and thirsty,but they did not dare to go into any town for fear of (担心,害怕)being discovered and captured(捉)by the enemy.Toward evening they arrived at a mountain where there was a small cave.

  7. A Web of Controversies

    DEFF Research Database (Denmark)

    Baron, Christian

    2011-01-01

    Using the Burgess Shale controversies as a case-study, this paper argues that controversies within different domains may interact as to create a situation of “com- plicated intricacies,” where the practicing scientist has to navigate through a context of multiple thought collectives. To some extent...... of academic science have had a tendency to treat the practicing scientist as members of a single (enclosed) thought collective that stands intellectually isolated from other similar entities unless the discipline was in a state of crisis of paradigmatic proportions. The richness and complexity of Burgess...... Shale debate shows that this encapsulated kind of analysis is not enough....

  8. A bottom hole motor

    Energy Technology Data Exchange (ETDEWEB)

    Kibishcher, G.B.; Karpenko, V.K.; Pogorelov, V.P.

    1982-01-01

    A bottom hole motor is proposed which includes a body, a push rod with a piston, a spindle, a mechanism for converting the reciprocal movement of the piston into rotation of the shaft and pump and drain cavities. In order to simplify the design the push rod is made with radial openings above and below the piston, while the shaft is made with two longitudinal channels at the level of the radial openings of the push rod on the diametrically opposite sides. The cavity of one channel is constantly connected with the pump cavity, while the other is permanently connected with the drain cavity.

  9. Guess a New Word

    Institute of Scientific and Technical Information of China (English)

    韩加春

    2010-01-01

    @@ When you read,you will find some new words,what should you do?You can look up the words in the dictionary,but it will take you a lot of time.Sometimes you can guess a new word because you know some parts of the new word.For example,a writer means a person who writes something.Sometimes it is not enough to understand a new word,but to know part of it may help you a lot.

  10. A lengthy illness

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ In1916 a 16 year old girl was admitted in a depressive stupor to Bloomfield Hospital,a small Quaker asylum in Dublin.She was neither eating nor speaking.My grandfather (a general physician and lecturer in materia medica at Trinity College Dublin) looked after her and tube fed her for a month until she started to recover.After leaving hospital,she remained well for more than 20 years,but then she became seriously depressed again and was readmitted to Bloomfield,where my father (a consultant physician and professor of jurisprudence and hygiene at the Royal College of Surgeons Medical School) was now in charge.

  11. A Logic for Choreographies

    DEFF Research Database (Denmark)

    Lopez, Hugo Andres; Carbone, Marco; Hildebrandt, Thomas

    2010-01-01

    We explore logical reasoning for the global calculus, a coordination model based on the notion of choreography, with the aim to provide a methodology for specification and verification of structured communications. Starting with an extension of Hennessy-Milner logic, we present the global logic (GL...... ), a modal logic describing possible interactions among participants in a choreography. We illustrate its use by giving examples of properties on service specifications. Finally, we show that, despite GL is undecidable, there is a significant decidable fragment which we provide with a sound and complete proof...

  12. A Logic for Choreographies

    CERN Document Server

    Carbone, Marco; Hildebrandt, Thomas T; López, Hugo A; 10.4204/EPTCS.69.3

    2011-01-01

    We explore logical reasoning for the global calculus, a coordination model based on the notion of choreography, with the aim to provide a methodology for specification and verification of structured communications. Starting with an extension of Hennessy-Milner logic, we present the global logic (GL), a modal logic describing possible interactions among participants in a choreography. We illustrate its use by giving examples of properties on service specifications. Finally, we show that, despite GL is undecidable, there is a significant decidable fragment which we provide with a sound and complete proof system for checking validity of formulae.

  13. A Logic for Choreographies

    Directory of Open Access Journals (Sweden)

    Marco Carbone

    2011-10-01

    Full Text Available We explore logical reasoning for the global calculus, a coordination model based on the notion of choreography, with the aim to provide a methodology for specification and verification of structured communications. Starting with an extension of Hennessy-Milner logic, we present the global logic (GL, a modal logic describing possible interactions among participants in a choreography. We illustrate its use by giving examples of properties on service specifications. Finally, we show that, despite GL is undecidable, there is a significant decidable fragment which we provide with a sound and complete proof system for checking validity of formulae.

  14. Statistics in a Nutshell

    CERN Document Server

    Boslaugh, Sarah

    2008-01-01

    Need to learn statistics as part of your job, or want some help passing a statistics course? Statistics in a Nutshell is a clear and concise introduction and reference that's perfect for anyone with no previous background in the subject. This book gives you a solid understanding of statistics without being too simple, yet without the numbing complexity of most college texts. You get a firm grasp of the fundamentals and a hands-on understanding of how to apply them before moving on to the more advanced material that follows. Each chapter presents you with easy-to-follow descriptions illustrat

  15. A Tewo Tibetan Childhood

    Directory of Open Access Journals (Sweden)

    Rdo rje tshe brtan

    2013-04-01

    Full Text Available Rdo rje tshe brtan (b. 1986 describes his childhood in Dredze Village, Yiwa Township, Tewo County, Gannan Tibetan Autonomous Prefecture, Gansu Province, China, as well as being a student in Xining City, Qinghai Province. Topics covered include his family, childhood injuries and illnesses, education, Terang (malicious household deities, mountain deities and associated rituals and sacrifices, death, conflict with other locals, collecting local plants, a birth in the village, stealing fruit, a wedding, plowing, a visit to a hot spring, a lost yak, slaughtering pigs, government confiscation of fields, and slaughtering pigs. Photos provide additional detail.

  16. Shooting in a foam.

    Science.gov (United States)

    Le Goff, Anne; Quéré, David; Clanet, Christophe

    2014-09-21

    We study the motion of a solid sphere after its fast impact on a bath of liquid foam. We identify two regimes of deceleration. At short times, the velocity is still large and the foam behaves similar to a Newtonian fluid of constant viscosity. Then we measure a velocity threshold below which the sphere starts experiencing the foam's elasticity. We interpret this behavior using a visco-elasto-plastic model for foam rheology. Finally we discuss the possibility of stopping a projectile in the foam, and evaluate the capture efficiency.

  17. Creating a practice website.

    Science.gov (United States)

    Downes, P K

    2007-05-26

    A website is a window to the outside world. For a dental practice, it may be the first point of contact for a prospective new patient and will therefore provide them with their 'first impression'; this may be days or weeks before actually visiting the practice. This section considers the different ways of creating a dental practice website and lists some of the main dental website design companies. It also describes what factors make a successful website and offers advice on how to ensure that it complies with current regulations and recommendations.

  18. Cytometer on a Chip

    Science.gov (United States)

    Fernandez, Salvador M.

    2011-01-01

    A cytometer now under development exploits spatial sorting of sampled cells on a microarray chip followed by use of grating-coupled surface-plasmon-resonance imaging (GCSPRI) to detect the sorted cells. This cytometer on a chip is a prototype of contemplated future miniature cytometers that would be suitable for rapidly identifying pathogens and other cells of interest in both field and laboratory applications and that would be attractive as alternatives to conventional flow cytometers. The basic principle of operation of a conventional flow cytometer requires fluorescent labeling of sampled cells, stringent optical alignment of a laser beam with a narrow orifice, and flow of the cells through the orifice, which is subject to clogging. In contrast, the principle of operation of the present cytometer on a chip does not require fluorescent labeling of cells, stringent optical alignment, or flow through a narrow orifice. The basic principle of operation of the cytometer on a chip also reduces the complexity, mass, and power of the associated laser and detection systems, relative to those needed in conventional flow cytometry. Instead of making cells flow in single file through a narrow flow orifice for sequential interrogation as in conventional flow cytometry, a liquid containing suspended sampled cells is made to flow over the front surface of a microarray chip on which there are many capture spots. Each capture spot is coated with a thin (approximately 50-nm) layer of gold that is, in turn, coated with antibodies that bind to cell-surface molecules characteristic of one the cell species of interest. The multiplicity of capture spots makes it possible to perform rapid, massively parallel analysis of a large cell population. The binding of cells to each capture spot gives rise to a minute change in the index of refraction at the surface of the chip. This change in the index of refraction is what is sensed in GCSPRI, as described briefly below. The identities of the

  19. A lunar venture

    Science.gov (United States)

    Lee, Joo Ahn; Trinh, Lu X.

    1989-01-01

    As the Earth's space station is in its final stages of design, the dream of a permanent manned space facility is now a reality. Despite this monumental achievement, however, man's quest to extend human habitation further out into space is far from being realized. The next logical step in space exploration must be the construction of a permanent lunar base. This lunar infrastucture can, in turn, be used as a staging ground for further exploration of the remote regions of the solar system. As outlined by the National Aeronautics and Space Administration, the lunar base program consists of three exploratory and implementation phases. In response to the technological and facility requirements of Phase 1 and 2 of this program, the Aerospace Vehicle Design Program of the University of Virgina (UVA) is proud to present a preliminary design for such a lunar infrastructure. This study is a comprehensive evaluation of the mission requirements as well as the design criteria for space vehicles and facilities. The UVA Lunar Venture is a dual system that consists of a lunar space station and a fleet of lunar landers/transporters. With such a design, it is demonstrated that all initial exploratory and construction requirements for the lunar base can be efficiently satisfied. Additionally, the need for such a dual system is justified both from a logistic and economic standpoint.

  20. A thermochemical energy converter

    Energy Technology Data Exchange (ETDEWEB)

    Toyeguti, K.; Indzima, T.

    1982-08-09

    Mercury is used as the active mass of the anode in the converter and 0/sub 2/ is used as the active cathode material. The reaction of Mercury + 1/2 0/sub 2/-Hg0 occurs with a discharge. With heating to 500/sup 0/C the regeneration of the Mercury, Hg0 yields Mercury + 1/2 0/sub 2/, occurs. The device for performing the thermochenical conversion of energy contains an element body, an oxygen chamber, an oxygen electrode, a chamber with an alkaline liquid electrolyte, a separator, an auxiliary separator, an electrode and a chamber with the Mercury. The thermochemical reaction occurs in the reactor to which the Hg0 is transported along a pipe which has a refrigerator and a valve. The Mercury is fed into the element from a reservoir. The Mercury reduced in the reactor and in a reaction tower is fed into it through a closed cycle. The bellows is connected with the reactor by a pipe with a refrigerator. Through it the 0/sub 2/ goes in a closed cycle to the chamber. The current forming reactions are Hg + 20H-anion yields Hg0 + H/sub 2/0 + 2e and 1/2 0/sub 2/ + H/sub 2/0 + 2e yields 20H-anion. The voltage on the outleads of the element is approximately 0.3 volts.