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Sample records for professor bateson coined

  1. Introduction: Bateson the Precursor

    DEFF Research Database (Denmark)

    Hoffmeyer, Jesper

    2008-01-01

    Most scientists tacitly assume that the questions of origins, the origin of life and the origin of language or consciousness, are solvable on the basis of materialistic science, but only few among them seem to recognize the true enormity of the challenge posed by this belief. Bateson was one...

  2. Gregory Bateson - Systemisk læringsteori

    DEFF Research Database (Denmark)

    Keiding, Tina Bering; Laursen, Erik

    2007-01-01

    Artiklen giver en kort introduktion til den engelske antropolog og læringsforsker Gregory Bateson (1904 -1980). Udgangspunktet er, at Bateson har leveret en banebrydende original indsats inden for konstruktivistisk læringsteori og den dag i dag kan tilbyde os nye, overraskende og perspektivrige i...

  3. Professor

    DEFF Research Database (Denmark)

    Hansen, Henrik

    2014-01-01

    DEBAT: Danske bistandskroner skal øge den interregionale handel i Afrika - det skaber vækst i Afrika og indirekte handel med danske virksomheder, mener Henrik Hansen, professor ved Økonomisk Institut på KU.......DEBAT: Danske bistandskroner skal øge den interregionale handel i Afrika - det skaber vækst i Afrika og indirekte handel med danske virksomheder, mener Henrik Hansen, professor ved Økonomisk Institut på KU....

  4. William Bateson: a biologist ahead of his time

    Indian Academy of Sciences (India)

    Unknown

    produced a distinct model and some inconsistencies between the ... ject is based remain to this day (Provine 1971). From the .... re-established, the sterility does not return in the later .... The relevance of Bateson's style of thinking to modern ...

  5. Gregory Bateson and the mathematicians: from interdisciplinary interaction to societal functions.

    Science.gov (United States)

    Heims, S P

    1977-04-01

    An instance of fruitful cross-disciplinary contacts is examined in detail. The ideas involved include (1) the double-blind hypothesis for schizophrenia, (2) the critique of game theory from the viewpoint of anthropology and psychiatry, and (3) the application of concepts of communication theory and theory of logical types to an interpretation of psychoanalytic practice. The protagonists of the interchange are Gregory Bateson and the two mathematicians Norbert Wiener and John von Neumann; the date, March 1946. This interchange and its sequels are described. While the interchanges between Bateson and Wiener were fruitful, those between Bateson and von Neumann were much less so. The latter two held conflicting premises concerning what is significant in science; Bateson's and Wiener's were compatible. In 1946, Wiener suggested that information and communication might be appropriate central concepts for psychoanalytic theory--a vague general idea which Bateson (with Ruesch) related to contemporary clinical practice. For Bateson, Wiener, and von Neumann, the cross-disciplinary interactions foreshadowed a shift in activities and new roles in society, to which the post World War II period was conducive. Von Neumann became a high-level government advisor; Wiener, an interpreter of science and technology for the general public; and Bateson a counter-culture figure.

  6. Reginald Crundall Punnett: first Arthur Balfour Professor of Genetics, Cambridge, 1912.

    Science.gov (United States)

    Edwards, A W F

    2012-09-01

    R. C. Punnett, the codiscoverer of linkage with W. Bateson in 1904, had the good fortune to be invited to be the first Arthur Balfour Professor of Genetics at Cambridge University, United Kingdom, in 1912 when Bateson, for whom it had been intended, declined to leave his new appointment as first Director of the John Innes Horticultural Institute. We here celebrate the centenary of the first professorship dedicated to genetics, outlining Punnett's career and his scientific contributions, with special reference to the discovery of "partial coupling" in the sweet pea (later "linkage") and to the diagram known as Punnett's square. His seeming reluctance as coauthor with Bateson to promote the reduplication hypothesis to explain the statistical evidence for linkage is stressed, as is his relationship with his successor as Arthur Balfour Professor, R. A. Fisher. The background to the establishment of the Professorship is also described.

  7. Ethnography and Ethics: A Critique of Gregory Bateson (1904-1980)

    Science.gov (United States)

    Watras, Joseph

    2010-01-01

    This essay about the work of a famous anthropologist is an attempt to illuminate one way that researchers could apply their findings about the behavior of people in particular groups to ethical considerations of social relations. I argue that Gregory Bateson (1904-1980) is a good example because he applied a few seminal ideas to a wide range of…

  8. 2 Professors Rock Out Online to Study Fame--and Us

    Science.gov (United States)

    Young, Jeffrey R.

    2009-01-01

    Most people who stumble across the YouTube video of the self-proclaimed rock star Gory Bateson singing to a scantily clad prostitute in Amsterdam's red-light district probably have no idea that the work is part of a research project--or that the man holding the guitar is a tenured professor. The video has attracted more than 12,000 views and won a…

  9. Bioentropy, Aesthetics and Meta-dualism: The Transdisciplinary Ecology of Gregory Bateson

    Directory of Open Access Journals (Sweden)

    Peter Harries-Jones

    2010-11-01

    Full Text Available In this paper I am going to be dealing with Gregory Bateson, a theorist who is one of the founders of cybernetics, an acknowledged precursor of Biosemiotics, and in all respects highly transdisciplinary. Until his entry into cybernetics Bateson was an anthropologist and like anthropologists of his day, accepted a semantic approach to meaning through the classic work of Ogden and Richards and their thought-word-meaning triangle. Ogden and Richards developed their semantic triangle from Peirce, but effectively turned the Peircian semiotic triad into a pentad of addressors and addressees, to which Bateson added context and reflexivity through feedback loops. The emergence of cybernetics and information theory in the 1940s increased the salience of the notion of feedback yet, he argued, information theory had truncated the notion of meaning. Bateson’s discussion of the logical categories of learning and communication distinguished the difference between and ‘sign’ and ‘signal’. Cybernetic signaling was a form of zero‑learning; living systems were interpretative and engaged in several logical types of learning. Twenty years later he took up similar sorts of issues with regard to the new science of ecology which had framed systemic ‘entropy’ solely in thermodynamic terms and ignored communication and learning in living systems. His concept of Bioentropy is presented in section two of this paper as is its association with redundancy. Bioentropy, in turn, led to his offering an entirely new definition of information: “the difference that makes a difference.” The definition could apply to both human and non-human communication patterns, since some forms of animal communication could not undertake logical typing. Finally, he believed that his own systemic approach was insufficient for meta-dualism. He promoted the idea of an ecological aesthetics which needed to be sufficiently objective to deal with the many disruptions in its own

  10. COIN Goes GLOCAL: Traditional COIN With a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles

    Science.gov (United States)

    2007-05-17

    COIN goes “ GLOCAL ”: Traditional COIN with a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles? A...TITLE AND SUBTITLE COIN goes “ GLOCAL ”: Traditional COIN with a Global P ti D th C t US St t R fl t COIN 5a. CONTRACT NUMBER Perspective: Does...Monograph: COIN goes “ GLOCAL ”: Traditional COIN with a Global Perspective: Does the Current US Strategy Reflect COIN Theory, Doctrine and Principles

  11. DE BATESON A INGOLD: PASSOS NA CONSTITUIÇÃO DE UM PARADIGMA ECOLÓGICO

    Directory of Open Access Journals (Sweden)

    Otávio Velho

    2001-10-01

    Full Text Available Em 2000 foi finalmente reeditado o mais importante livro de Gregory Bateson, Steps to an Ecology of Mind. Nesse mesmo ano, foi lançado o livro de Tim Ingold, The Perception of the Environment, que retoma muitas das preocupações de Bateson. Este ensaio considera que esses dois eventos marcam passos importantes na constituição de um "paradigma ecológico", o qual vem responder a alguns dilemas que rondam a antropologia e abrir perspectivas para um diálogo interdisciplinar em novas bases.Gregory Bateson’s most important book, Steps to an Ecology of Mind, was finally re-edited in 2000. In the same year, Tim Ingold’s book, The Perception of the Environment, which takes up many of Bateson’s preocupations, was released. This essay proposes that these two events represent important steps towards an "ecological paradigm", which attempts to answer some of anthropology’s dilemas, and open up perspectives for interdisciplinary dialogue on new terms.

  12. Learning the “language of connections”. The value of art in the thinking of Gregory Bateson

    Directory of Open Access Journals (Sweden)

    Silvia Demozzi

    2015-05-01

    Full Text Available The article presents a brief analysis of the role of art in the thinking of Gregory Bateson. This is the starting point for a pedagogical reflection that may emphasize, in the educational processes, the languages of connection, typical of art and metaphor, and may propose alternative paths to «single thought» and simplification. 

  13. Communication and Control in Organizations: Applying the Work of James Thompson and Gregory Bateson to Interpretive Research.

    Science.gov (United States)

    1985-07-01

    developing integrated theories of organization and administration . His theoretical lineage and written work is explicitly structuralist . He drew much...1979). ’Unobtrusive Measures in Organizational Theory : A Reminder’. Administrative Science SQarJt .XJly, 24, 650-659. Weick, K. (1974). ’Middle...the work of James Thompson and Gregory Bateson. (3) It is a treatise about the application of interpretive methods and theory to organizational research

  14. Quantum walks with entangled coins

    International Nuclear Information System (INIS)

    Venegas-Andraca, S E; Ball, J L; Burnett, K; Bose, S

    2005-01-01

    We present a mathematical formalism for the description of un- restricted quantum walks with entangled coins and one walker. The numerical behaviour of such walks is examined when using a Bell state as the initial coin state, with two different coin operators, two different shift operators, and one walker. We compare and contrast the performance of these quantum walks with that of a classical random walk consisting of one walker and two maximally correlated coins as well as quantum walks with coins sharing different degrees of entanglement. We illustrate that the behaviour of our walk with entangled coins can be very different in comparison to the usual quantum walk with a single coin. We also demonstrate that simply by changing the shift operator, we can generate widely different distributions. We also compare the behaviour of quantum walks with maximally entangled coins with that of quantum walks with non-entangled coins. Finally, we show that the use of different shift operators on two and three qubit coins leads to different position probability distributions in one- and two-dimensional graphs

  15. Digital Coin Business Model Using the Coin ATM

    Science.gov (United States)

    Jung, Won-Gyo; Park, Sang-Sung; Shin, Young-Geun; Jang, Dong-Sik

    2009-08-01

    Because about 83.6 billion won worth coins are not collected annually, 35 billion won of government money is being wasted for producing new coins in Korea. In order to improve unnecessary government money leakage, we now have to develop a proper way of managing small valued money such as coins. We have already developed the coin ATM to solve such problem in the previous study. In this study, we proposed business model, which enables users to deposit or consume such small amount of money with the coin ATM. The proposed business model has advantages that enable to connect various payment system and is efficient to consume such small amount of money. This business model improves not only the way of managing small valued money but also the way of consuming small valued money. Furthermore, our business model can contribute to activating circulation of coins as well as preventing leakage of government money.

  16. Gregory Bateson: Rumo a uma epistemologia da comunicação

    Directory of Open Access Journals (Sweden)

    Etienne Samain

    2001-01-01

    Full Text Available

    Como se constrói nosso “saber”? Como nascem nossos “conhecimentos” ou, melhor dizendo, as “idéias” que nós fazemos das coisas deste mundo? A partir de que imperativos epistemológicos podemos pensar fundar uma ciência do conhecimento?

    Ao longo de milênios, esses conhecimentos se multiplicaram e se diversificaram. Com eles, emergiram centenas de epistemologias locais que, no entanto, cruzam-se no horizonte de suas indispensáveis inter-relações. Como e até onde uma “Epistemologia da Comunicação” (uma epistemologia, muitas vezes ainda, por demais local participará, no futuro, desta teia de relações e saberá fomentar o que se poderia chamar uma “ecologia do espírito”?

    Para tanto, procura-se delinear, nesta comunicação, alguns parâmetros iniciais de elaboração de uma “Epistemologia da Comunicação”, tirando proveito da gigantesca e complexa obra de Gregory Bateson (1904-1980, um penetrante pensador da questão, que foi, ao mesmo tempo, um biólogo, um antropólogo, um psiquiatra e um amante da comunicação humana.

  17. Practical quantum coin flipping

    International Nuclear Information System (INIS)

    Pappa, Anna; Diamanti, Eleni; Chailloux, Andre; Kerenidis, Iordanis

    2011-01-01

    We show that in the unconditional security model, a single quantum strong coin flip with security guarantees that are strictly better than in any classical protocol is possible to implement with current technology. Our protocol takes into account all aspects of an experimental implementation, including losses, multiphoton pulses emitted by practical photon sources, channel noise, detector dark counts, and finite quantum efficiency. We calculate the abort probability when both players are honest, as well as the probability of one player forcing his desired outcome. For a channel length up to 21 km and commonly used parameter values, we can achieve honest abort and cheating probabilities that are better than in any classical protocol. Our protocol is, in principle, implementable using attenuated laser pulses, with no need for entangled photons or any other specific resources.

  18. Aprendizagem e Comunicação em Bateson: A exigência de uma epistemologia Formal e Complexa

    Directory of Open Access Journals (Sweden)

    Maria Clara Faria Costa Oliveira

    2016-03-01

    Full Text Available RESUMO: Para Bateson, a mudança social radicaria numa mudança epistemológica profunda que incidisse sobretudo na educação e na comunicação (onde incluía a sua teorização psicológica. Essa revolução paradigmática, baseada na lógica formal de Whitehead e Russell, evitaria discursos ditos científicos destituídos de rigor. Aqui, analisamos hermeneuticamente o seu pensamento, salientando os limites que a lógica formal encontra nas experiências éticas, religiosas e estéticas. Sem essa revolução, encontramo-nos condenados à estagnação intelectual, pois formamos cidadãos sem capacidade de aprender a aprender, que possibilitaria a capacidade de produzir abduções, inferência lógica tão necessária na produção do raciocínio humano; o seu desenvolvimento garantiria a capacidade de pensar/construir complexamente o mundo, interligando os saberes; poucos são também aqueles que explicitam e argumentam a favor das suas crenças, base axiomática da capacidade abdutiva. A organização social (via sistema educativo, formal e não formal se constrói com sujeitos que raramente possuem mentes bem estruturadas, favorecedoras de passagem de patamares de aprendizagem para outros superiores. Antes se estimula a confusão de tipos lógicos, tomando o todo pela parte, por exemplo. Bateson critica também o sistema de avaliação quantitativo, diminuindo a possibilidade de formação do pensamento abstrato e formal, como a filosofia e a matemática exigem.

  19. Coin Counter: Gamification for Classroom Management

    Science.gov (United States)

    Carlson, John; Harris, Ranida; Harris, Ken

    2017-01-01

    In recent years, gamification has been utilized in a number of different contexts, including educational applications. This paper describes a unique application of coin-based gamification classroom management system in undergraduate programming classes. The coin-based gamification allowed students to earn and spend coins as a form of classroom…

  20. Analysis of pulmonary coin lesions

    International Nuclear Information System (INIS)

    Kim, O; Kim, K. H.; Oh, K. K.; Park, C. Y.

    1979-01-01

    For A long time the solitary pulmonary nodule has remained a difficult problem to solve and has attracted a great deal of attension in recent years. Circumscribed coin lesions of the lung were generally peripheral in location with respect to the pulmonary hilus. Because of this, important clinical problem in management and diagnosis arise. Such a lesion is discovered through roentgenologic examination. So the roentgenologists is the first be in a position to offer advise. This presentation is an attempt to correlate a useful diagnosis with roentgenologic findings of pulmonary coin lesion which enables us to get differential diagnosis of benign and malignant lesion. Histologically proven 120 cases of the pulmonary coin lesion during the period of 8 years were reviewed through plain film, tomogram, bronchoscopy, variable laboratory findings, and clinical history. The results are as follows: 1. Male to female sex ratio was 3 : 1. In age distribution, most of the malignant pulmonary coin lesion appeared in 6th decade (39%) and 5th decade (27%). In benign lesion, the most cases were in 3 rd decade. 2. Pathological cell type are as follows: Primary bronchogenic cancer 43.3%, tuberculoma 25.8%, inflammatory lesion 17.5%, benign tumor 10%, and bronchial adenoma, harmartoma, A.V. malformation, mesothelioma, are 1 case respectively. As a result benign and malignant lesion showed equal distribution (49.1% : 50.3%). 3. In symptom analysis ; cough is the most common (43.5%) symptom in malignant lesion, next follows hemoptysis (20.9%) and chest pain (14.5%). In benign lesion, most of the patient (32.7%) did not complain any symptom. 4. In malignant lesion, the most common nodular size was 4 cm (32.3%), and in benign lesion 2 cm sized coin was most common (39.3%). 5. In general, margin of nodule was very sharp and well demarcated in benign lesion (83.3%), and in malignant lesion that was less demarcated and poorly defined. 6. Most case of calcification (82.7%) was seen in benign

  1. Autonomia profissional dos professores

    OpenAIRE

    Guerra, Teresa P.; Veiga, Feliciano

    2007-01-01

    Este estudo pretendeu analisar as representações dos professores acerca da sua autonomia em contexto escolar, com recurso a uma amostra de 203 professores de ambos os sexos, pertencentes a escolas dos distritos de Lisboa, Setúbal, Leiria e Aveiro. Utilizou-se a Escala de Autonomia Profissional dos Professores (EAPP).

  2. Variable-bias coin tossing

    International Nuclear Information System (INIS)

    Colbeck, Roger; Kent, Adrian

    2006-01-01

    Alice is a charismatic quantum cryptographer who believes her parties are unmissable; Bob is a (relatively) glamorous string theorist who believes he is an indispensable guest. To prevent possibly traumatic collisions of self-perception and reality, their social code requires that decisions about invitation or acceptance be made via a cryptographically secure variable-bias coin toss (VBCT). This generates a shared random bit by the toss of a coin whose bias is secretly chosen, within a stipulated range, by one of the parties; the other party learns only the random bit. Thus one party can secretly influence the outcome, while both can save face by blaming any negative decisions on bad luck. We describe here some cryptographic VBCT protocols whose security is guaranteed by quantum theory and the impossibility of superluminal signaling, setting our results in the context of a general discussion of secure two-party computation. We also briefly discuss other cryptographic applications of VBCT

  3. Variable-bias coin tossing

    Science.gov (United States)

    Colbeck, Roger; Kent, Adrian

    2006-03-01

    Alice is a charismatic quantum cryptographer who believes her parties are unmissable; Bob is a (relatively) glamorous string theorist who believes he is an indispensable guest. To prevent possibly traumatic collisions of self-perception and reality, their social code requires that decisions about invitation or acceptance be made via a cryptographically secure variable-bias coin toss (VBCT). This generates a shared random bit by the toss of a coin whose bias is secretly chosen, within a stipulated range, by one of the parties; the other party learns only the random bit. Thus one party can secretly influence the outcome, while both can save face by blaming any negative decisions on bad luck. We describe here some cryptographic VBCT protocols whose security is guaranteed by quantum theory and the impossibility of superluminal signaling, setting our results in the context of a general discussion of secure two-party computation. We also briefly discuss other cryptographic applications of VBCT.

  4. Laser cleaning on Roman coins

    Science.gov (United States)

    Drakaki, E.; Karydas, A. G.; Klinkenberg, B.; Kokkoris, M.; Serafetinides, A. A.; Stavrou, E.; Vlastou, R.; Zarkadas, C.

    Ancient metal objects react with moisture and environmental chemicals to form various corrosion products. Because of the unique character and high value of such objects, any cleaning procedure should guarantee minimum destructiveness. The most common treatment used is mechanical stripping, in which it is difficult to avoid surface damage when employed. Lasers are currently being tested for a wide range of conservation applications. Since they are highly controllable and can be selectively applied, lasers can be used to achieve more effective and safer cleaning of archaeological artifacts and protect their surface details. The basic criterion that motivated us to use lasers to clean Roman coins was the requirement of pulsed emission, in order to minimize heat-induced damages. In fact, the laser interaction with the coins has to be short enough, to produce a fast removal of the encrustation, avoiding heat conduction into the substrate. The cleaning effects of three lasers operating at different wavelengths, namely a TEA CO2 laser emitting at 10.6 μm, an Er:YAG laser at 2.94 μm, and a 2ω-Nd:YAG laser at 532 nm have been compared on corroded Romans coins and various atomic and nuclear techniques have also been applied to evaluate the efficiency of the applied procedure.

  5. Os riscos do texto e da imagem - Em torno de Balinese character (1942, de Gregory Bateson e Margaret Mead

    Directory of Open Access Journals (Sweden)

    Etienne Samain

    2000-11-01

    Full Text Available Balinese character. A photographie analysis (1942 de Gregory Bateson et Margaret Mead est, sans nul doute, un livre fondateur de l’anthropologie visuelle (photographique. Souvent cité, il reste insuffisamment exploré. Cet article soulève - après une brève présentation de l’organisation d’ensemble de l’oeuvre - un questionnement heuristique et une réflexion sur la nature de l’utilisation intégrative de l’image et du texte dans l’élaboration du discours anthropologique. Pour ce faire, nous étudions trois modèles d’organisation des planches photographiques de Balinese character et leurs respectifs commentaires écrits, effectuant des parcours inverses: de l’image au texte, du texte à l’image. S’il est vrai que l'un et l’autre de ces supports communicationnels sont singuliers autant que complémentaires, leurs richesse respective n’est pas à l’abri d’autres risques que cette recherche dévoilera.

  6. Divina Moneta. Coins in Religion and Ritual

    DEFF Research Database (Denmark)

    2017-01-01

    This edited collection analyses the phenomenon of coin use for religious and ritual purposes in different cultures and across different periods of time. It proposes an engagement with the theory and interpretation of the ‘material turn’ with numismatic evidence, and an evidence-based series......, interdisciplinary discussions are organised around three themes: coin deposit and ritual practice, the coin as economic object and divine mediator, and the value and meaning of coin offering. Although focusing on the medieval period in Western Europe, the book includes instructive cases from the Roman period until...

  7. Numerous dilemmas surrounding the 1917 nickel coins

    Directory of Open Access Journals (Sweden)

    Pantelić Svetlana

    2017-01-01

    Full Text Available The Law on Extraordinary Loans Amounting to 200 Million Dinars and the Minting of Silver and Nickel Coins in 1916 was the legal basis for minting the 5-, 10-, and 20-para nickel coins of the Kingdom of Serbia featuring the year 1917 as their minting year. Some authors believe that these coins were minted in the Minting House in Paris, whereas the others agree that they were certainly minted in France, but in a still unidentified minting house. There are authors who in recent reference literature underline the possibility of their minting in the USA Gorham Company, in Providence, Rhode Island. These coins had all the characteristics of the nickel coins of the Kingdom of Serbia from 1883, 1884, 1904 and 1912. Although, according to the Law, the Minister of Finance was authorized to mint 10 million dinars of these nickel coins, only 5 million pieces in each denomination were actually minted, in the total nominal value of just 1,750,000 dinars. The general opinion is that after the war only a small amount of these nickel coins reached Serbia, because the ships transporting the Serbian coins from the minting house sank on their way. The only varying aspect in this explanation is the location from which the ships were sailing towards Corfu, i.e. from the USA or from France. These coins stopped being legal tender as of 30 November 1931.

  8. Coin exposure may cause allergic nickel dermatitis

    DEFF Research Database (Denmark)

    Thyssen, Jacob P; Gawkrodger, David J; White, Ian R

    2012-01-01

    Nickel is used in coins because the metal has beneficial properties, including price, colour, weight, and corrosion resistance, and also because it is easy to stamp. It has often been claimed that the duration of skin contact with coins is too short to cause nickel release and dermatitis. However...

  9. Happy Birthday Professor Telegdi

    CERN Multimedia

    2002-01-01

    Professor Telegdi, pictured with Luciano Maiani and Alexander Skrinsky, receiving the medal of foreign member of the Russian Academy of Sciences in June 2000. Professor Valentine Telegdi celebrated his 80th birthday on Friday, 11th January. A brilliant American physicist of Hungarian origin, Professor Telegdi was a professor at the University of Chicago, the Swiss Federal Institute of Technology in Zurich (ETHZ) and the California Institute of Technology and took part in many CERN experiments, of which NA10 and L3 were the most recent. He served as Chairman of CERN's Scientific Policy Committee from 1981 to 1983. A member of numerous scientific academies, he shared the prestigious Wolf Prize with Maurice Goldhaber in 1991 in recognition of their separate seminal contributions to nuclear and particle physics, particularly those concerning weak interactions involving leptons.

  10. Experimental quantum tossing of a single coin

    International Nuclear Information System (INIS)

    Nguyen, A T; Frison, J; Massar, S; Huy, K Phan

    2008-01-01

    The cryptographic protocol of coin tossing consists of two parties, Alice and Bob, who do not trust each other, but want to generate a random bit. If the parties use a classical communication channel and have unlimited computational resources, one of them can always cheat perfectly. If the parties use a quantum communication channel, there exist protocols such that neither party can cheat perfectly, although they may be able to significantly bias the coin. Here, we analyze in detail how the performance of a quantum coin tossing experiment should be compared to classical protocols, taking into account the inevitable experimental imperfections. We then report an all-optical fiber experiment in which a single coin is tossed whose randomness is higher than achievable by any classical protocol and present some easily realizable cheating strategies by Alice and Bob

  11. Professor Michael Levitt

    Directory of Open Access Journals (Sweden)

    Gemma-Louise Davies

    2015-10-01

    Full Text Available Professor Michael Levitt (Stanford University, USA won the 2013 Nobel Prize in Chemistry for the development of multiscale models for complex chemical systems—computational tools which can calculate the course of chemical reactions. Professor Levitt was born in Pretoria, South Africa; he came to the UK on a summer vacation aged 16, where he decided to stay and study for his A‑levels. His interest in the physics of living systems drove him to study biophysics at King’s College London, before securing a PhD position at the Laboratory of Molecular Biology in Cambridge. In the interim year between his degree and beginning his PhD, Professor Levitt worked at the Weizmann Institute of Science in Israel, where he met his future wife. They married later that year and moved to Cambridge, where their three children were born. After completing his PhD, he spent time working in Israel, Cambridge, the Salk Institute and Stanford (both California. Since 1986, he has split his time between Israel and California. Outside of science, he is a keen hiker and he is well-known to have attended the eclectic ‘Burning Man’ Festival in California.[1] Professor Levitt visited the University of Warwick to speak at the Computational Molecular Science Annual Conference in March 2015. In this interview, Dr Gemma-Louise Davies, an Institute of Advanced Study Global Research Fellow, spoke to Professor Levitt about the importance of Interdisciplinarity in his field, role models in Academia, and his plans for the future. Image: Professor Michael Levitt (left with Dr Scott Habershon (right, organiser of the 2015 Computational Molecular Science Annual Conference during his visit to the University of Warwick in March 2015. [1] ‘Burning Man’ is a unique annual festival dedicated to community, art, music, self-expression and self-reliance. Tens of thousands of people flock to this temporary metropolis built in the Californian desert.

  12. Professor Torben Larsen

    DEFF Research Database (Denmark)

    Larsen, Torben

    2013-01-01

    En samling af væsentlige artikler, og diskussion, om stormflod skrevet af professor Torben Larsen, Aalborg Universitet. Torben Larsen diskuterer i artiklerne et forslag om at lukke Thyborøn Kanal for at mindske risikoen for stormflod og oversvømmelse langs Limfjordens byer.......En samling af væsentlige artikler, og diskussion, om stormflod skrevet af professor Torben Larsen, Aalborg Universitet. Torben Larsen diskuterer i artiklerne et forslag om at lukke Thyborøn Kanal for at mindske risikoen for stormflod og oversvømmelse langs Limfjordens byer....

  13. Equivalence of Szegedy's and coined quantum walks

    Science.gov (United States)

    Wong, Thomas G.

    2017-09-01

    Szegedy's quantum walk is a quantization of a classical random walk or Markov chain, where the walk occurs on the edges of the bipartite double cover of the original graph. To search, one can simply quantize a Markov chain with absorbing vertices. Recently, Santos proposed two alternative search algorithms that instead utilize the sign-flip oracle in Grover's algorithm rather than absorbing vertices. In this paper, we show that these two algorithms are exactly equivalent to two algorithms involving coined quantum walks, which are walks on the vertices of the original graph with an internal degree of freedom. The first scheme is equivalent to a coined quantum walk with one walk step per query of Grover's oracle, and the second is equivalent to a coined quantum walk with two walk steps per query of Grover's oracle. These equivalences lie outside the previously known equivalence of Szegedy's quantum walk with absorbing vertices and the coined quantum walk with the negative identity operator as the coin for marked vertices, whose precise relationships we also investigate.

  14. Experimental plug and play quantum coin flipping

    Science.gov (United States)

    Pappa, Anna; Jouguet, Paul; Lawson, Thomas; Chailloux, André; Legré, Matthieu; Trinkler, Patrick; Kerenidis, Iordanis; Diamanti, Eleni

    2014-04-01

    Performing complex cryptographic tasks will be an essential element in future quantum communication networks. These tasks are based on a handful of fundamental primitives, such as coin flipping, where two distrustful parties wish to agree on a randomly generated bit. Although it is known that quantum versions of these primitives can offer information-theoretic security advantages with respect to classical protocols, a demonstration of such an advantage in a practical communication scenario has remained elusive. Here we experimentally implement a quantum coin flipping protocol that performs strictly better than classically possible over a distance suitable for communication over metropolitan area optical networks. The implementation is based on a practical plug and play system, developed by significantly enhancing a commercial quantum key distribution device. Moreover, we provide combined quantum coin flipping protocols that are almost perfectly secure against bounded adversaries. Our results offer a useful toolbox for future secure quantum communications.

  15. Professor Tiina Tasmuth Helsingis

    Index Scriptorium Estoniae

    2000-01-01

    Tervisekasvatuse õppetooli professor Tiina Tasmuth osales 11.-14. juunini Helsingis toimunud rahvusvahelise konverentsi "2nd Psycho-Social Impacts of Breast Cancer" töös ning esines ettekandega teemal "Chronic post-treatment symptoms in patients with breast cancer" : [täistekst

  16. Professor Kalkman retires

    NARCIS (Netherlands)

    Baas, Pieter

    1991-01-01

    On 13 December 1990 Prof. Dr. Cornelis (Kees) Kalkman retired from the positions of Professor of Plant Systematics and Scientific Director of the Rijksherbarium/ Hortus Botanicus by presenting his valedictory lecture to the academic community of Leiden University and the assembled Dutch Botanical

  17. Professor Wolfgang Panofsky

    CERN Multimedia

    2007-01-01

    "Professor Wolfgang panofsky, who died on September 24 aged 88, was a particle physicists and director of the Stanford Linear Accelerator Centre (SLAC) in California; with Jack Steinberger, he was the first to isolate the neutral pi meson, one of the subatomic particles which had been predicted by theoretical scientists to account for the strng force which binds the nuclei of atoms." (1 page)

  18. Entanglement in coined quantum walks on regular graphs

    International Nuclear Information System (INIS)

    Carneiro, Ivens; Loo, Meng; Xu, Xibai; Girerd, Mathieu; Kendon, Viv; Knight, Peter L

    2005-01-01

    Quantum walks, both discrete (coined) and continuous time, form the basis of several recent quantum algorithms. Here we use numerical simulations to study the properties of discrete, coined quantum walks. We investigate the variation in the entanglement between the coin and the position of the particle by calculating the entropy of the reduced density matrix of the coin. We consider both dynamical evolution and asymptotic limits for coins of dimensions from two to eight on regular graphs. For low coin dimensions, quantum walks which spread faster (as measured by the mean square deviation of their distribution from uniform) also exhibit faster convergence towards the asymptotic value of the entanglement between the coin and particle's position. For high-dimensional coins, the DFT coin operator is more efficient at spreading than the Grover coin. We study the entanglement of the coin on regular finite graphs such as cycles, and also show that on complete bipartite graphs, a quantum walk with a Grover coin is always periodic with period four. We generalize the 'glued trees' graph used by Childs et al (2003 Proc. STOC, pp 59-68) to higher branching rate (fan out) and verify that the scaling with branching rate and with tree depth is polynomial

  19. Gambler's ruin? Some aspects of coin tossing

    NARCIS (Netherlands)

    Johnson, Porter; Atkinson, David

    2010-01-01

    What is the average number of coin tosses needed before a particular sequence of heads and tails first turns up? This problem is solved in our paper, starting with doubles; a tail, followed by a head, turns up on average after only four tosses, while six tosses are needed for two successive heads.

  20. Professor og DMI

    DEFF Research Database (Denmark)

    Kaas, Eigil

    2010-01-01

    Det er koldt, og det har det været længe. Sammen med sneen har det en selvforstærkende effekt på vintervejret, forklarer professor og meteorolog. Kulde: - Det er koldt, fordi vinden kommer fra et sted, hvor det er koldt. Det er den enkle forklaring på, at Danmark og store dele af Europa lige nu...... oplever meget lave temperaturer - og for Danmarks vedkommende en usædvanlig lang periode med vintervejr. Forklaringen kommer fra professor Eigil Kaas fra Niels Bohr Instituttet ved Københavns Universitet. Han forklarer til jp.dk, at vintervejret dog er betinget af den mere eller mindre tilfældige måde...

  1. Professor Alex Callinicos

    OpenAIRE

    Ali Saqer

    2016-01-01

    Professor Alex Callinicos is a renowned social theorist and scholar of international political economy. He conducts research on Marx and Marxism, European social and political theory, contemporary political philosophy, critical theory, historiography, and international political economy. His work provides invaluable insights on issues of race and racism, social justice, the Third Way, imperialism, austerity, and EU politics, among many other fascinating contemporary issues. Alex studied Philo...

  2. Design of coin sorter counter based on MCU

    Science.gov (United States)

    Yang, Yahan; Si, Xu

    2018-04-01

    With unmanned tickets, vending machines promotion, greatly increased the circulation of coins, especially bus companies, the financial sector need to classify a large number of coins every day, inventory, a huge workload. The design of the microcontroller as the control center, combined with the sensor technology and the corresponding mechanical structure to complete the separation of coins and finishing the packaging work and real-time monitoring and display of the type and number of coins function, this article details the system hardware and software design, and The test adjustment shows that the system can achieve the function of separating and sorting coins and monitoring the type and quantity of coins displayed on the coin.

  3. Professor Stewart's incredible numbers

    CERN Document Server

    Stewart, Ian

    2015-01-01

    Ian Stewart explores the astonishing properties of numbers from 1 to10 to zero and infinity, including one figure that, if you wrote it out, would span the universe. He looks at every kind of number you can think of - real, imaginary, rational, irrational, positive and negative - along with several you might have thought you couldn't think of. He explains the insights of the ancient mathematicians, shows how numbers have evolved through the ages, and reveals the way numerical theory enables everyday life. Under Professor Stewart's guidance you will discover the mathematics of codes,

  4. Coin exposure may cause allergic nickel dermatitis: a review.

    Science.gov (United States)

    Thyssen, Jacob P; Gawkrodger, David J; White, Ian R; Julander, Anneli; Menné, Torkil; Lidén, Carola

    2013-01-01

    Nickel is used in coins because the metal has beneficial properties, including price, colour, weight, and corrosion resistance, and also because it is easy to stamp. It has often been claimed that the duration of skin contact with coins is too short to cause nickel release and dermatitis. However, it is well known by dermatologists specialized in occupational skin diseases, and by their nickel-allergic patients, that hand eczema in cashiers and other professionals who handle coins may be caused or aggravated by nickel release from coins. In this review, we present evidence from past studies showing that nickel-containing coins can indeed pose a risk for those who handle them. For protection of the health of consumers, cashiers, and other workers who handle coins, it is suggested that coins without nickel release should be used as a substitute for the high nickel-releasing coins currently in widespread use. The key risk factor in this situation is the ability of metal alloys in coins to release nickel and contaminate the skin after repeated contact from coin handling. © 2012 John Wiley & Sons A/S.

  5. Professor Alex Callinicos

    Directory of Open Access Journals (Sweden)

    Ali Saqer

    2016-04-01

    Full Text Available Professor Alex Callinicos is a renowned social theorist and scholar of international political economy. He conducts research on Marx and Marxism, European social and political theory, contemporary political philosophy, critical theory, historiography, and international political economy. His work provides invaluable insights on issues of race and racism, social justice, the Third Way, imperialism, austerity, and EU politics, among many other fascinating contemporary issues. Alex studied Philosophy, Politics, and Economics at Balliol College, Oxford, and Philosophy of Science at the London School of Economics before writing a DPhil on Marx's Capital, also at Balliol. He was a Junior Research Fellow in Contemporary Social Thought at St Peter's College, Oxford from 1979 to 1981, after which he taught social and political theory at the Department of Politics at the University of York until 2005, when he moved to King's College London. Alex is currently the Professor of European Studies at King's and editor of International Socialism. Alex has been an active contributor to the development of the movement for another globalization, participating in the World Social Forum and an animator of the European Social Forum. Among his best known books are The Revolutionary Ideas of Karl Marx (1983, Against Postmodernism (1990, Social Theory (1999, An Anti-Capitalist Manifesto (2003, The Resources of Critique (2006, Imperialism and Global Political Economy (2009. His most recent book is entitled Deciphering Capital: Marx’s Capital and its Destiny (2014.

  6. Pseudo Random Coins Show More Heads Than Tails

    OpenAIRE

    Bauke, Heiko; Mertens, Stephan

    2003-01-01

    Tossing a coin is the most elementary Monte Carlo experiment. In a computer the coin is replaced by a pseudo random number generator. It can be shown analytically and by exact enumerations that popular random number generators are not capable of imitating a fair coin: pseudo random coins show more heads than tails. This bias explains the empirically observed failure of some random number generators in random walk experiments. It can be traced down to the special role of the value zero in the ...

  7. 1- and 2-dinar silver coins from 1897

    Directory of Open Access Journals (Sweden)

    Pantelić Svetlana

    2015-01-01

    Full Text Available The silver coins from 1897, bearing the image of King Aleksandar Obrenović, were minted in 4 million pieces (1-dinar denomination, and in 2 million pieces (2-dinar denomination. Both types of coins were minted in the Imperial Mint in Vienna, in 835% silver. The 1-dinar coin weighed 5 grams and was 23mm in diameter, whereas the 2-dinar coin weighed 10 grams and was 27mm in diameter. They were legal tender until 1931, although gradually withdrawn from circulation over the years.

  8. 77 FR 840 - Pricing for 2012 Products Featuring $1 Coins

    Science.gov (United States)

    2012-01-06

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for 2012 Products Featuring $1 Coins AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing 2012 pricing for products featuring $1 coins, as follows: Product Retail price Presidential $1...

  9. Weighing Designs to Detect a Single Counterfeit Coin

    Indian Academy of Sciences (India)

    IAS Admin

    research-level problems have been posed and resolved from time to time. .... 1b shows this method of fake coin detection. 2. ... the same weighing design) whether there is a fake coin of ..... He put all 101 pills in the last bottle, and mixed it up.

  10. Teaching Coin Discrimination to Children with Visual Impairments

    Science.gov (United States)

    Hanney, Nicole M.; Tiger, Jeffrey H.

    2012-01-01

    We taught 2 children with visual impairments to select a coin from an array using tactile cues after hearing its name and then to select a coin after hearing its value. Following the acquisition of these listener (receptive language) skills, we then observed the emergence of speaker (expressive language) skills without direct instruction.…

  11. Professor Igor Yevseyev: In Memoriam Professor Igor Yevseyev: In Memoriam

    Science.gov (United States)

    2012-06-01

    Dear readers and authors, June 3, 2012 will mark five months since Professor Igor Yevseyev, Deputy Editor-in-Chief of both journals Laser Physics and Laser Physics Letters passed away, suddenly and unexpectedly. He was 67. Born in Moscow, he entered one of the world's best schools of physics, Moscow Engineering Physics Institute (MEPhI). With this renowned educational and research institution he bonded an alliance for his entire life, starting as an undergraduate student in the Department of Theoretical Physics and later continued as graduate student, assistant professor, associated professor, and full professor in the same department, a rare accomplishment of a person. All those years he retained the love of his life—the love for physics. He worked tirelessly as a teacher and scholar in this captivating field of knowledge. Professor Yevseyev was one of the founders of the international journal of Laser Physics in 1990, the first academic English language journal published in the former USSR. Later, in 2004, the second journal, Laser Physics Letters was brought to the forum of global laser physics community. The idea behind this new title was Professor Yevseyev's initiative to reach the readers and participants with new pioneering and break-through research results more rapidly. His leadership and indefatigable dedication to the quality of published materials made it possible that this journal reached international recognition in a few short years. Still, in order to attract even more attention of potential contributors and readers, Professor Yevseyev originally proposed to conduct the International Laser Physics Workshop (LPHYS) on the annual basis. Since 1992 the Workshop has been conducted every year, each year in a different country. As in all previous years, Professor Yevseyev was the key organizer of this year's workshop in Calgary, Canada. Sadly, this workshop will take place without him. Editorial Board

  12. An ingested foreign body: two sides of the same coin?

    Science.gov (United States)

    Varadharajan, Kiran; Magill, Jennifer; Patel, Kalpesh

    2014-04-09

    A 2-year-old child presented to the emergency department with an acute onset of dysphagia and stertor. A plain anteroposterior chest X-ray revealed a single circular opacity in the middle third of the oesophagus consistent with an ingested coin. The child was taken to the theatre for rigid pharyngo-oesophagoscopy and removal of the coin. After the first coin was removed subsequent endoscopic examination revealed a second coin at the same location. This extremely rare case of two ingested coins becoming impacted with perfect radiological alignment emphasises the importance of thorough examination on endoscopy and the potential limitations of an X-ray in initial assessment of an ingested foreign body.

  13. Euro coins, entrepreneurship and X-ray fluorescence

    International Nuclear Information System (INIS)

    Peeters, A.; Fraipont, C.

    2014-01-01

    During the first year of their master degree in Technical Engineering the students have to realized a large project. This year, we have decided to add an entrepreneurial aspect to the purely scientific aspect used until now, while focusing the students' attention on a customer oriented management of the project and on the project management itself, with the definition of accurate objectives, a planning time, the distribution of the tasks and responsibilities... This year, the retained subject is the study of the evolution of the precursors of our current euro coins, based on the fulfilling of numerous requirements as the ease to differentiate the coins by blind people, the possibility for automates to recognize the coins, the way the coins will interact with skin and perspiration, the magnetic properties of the coins... The project is the response of the nuclear group of ISIB to a concern of a Belgian numismatist. (authors)

  14. Application of PIXE to study ancient Iranian silver coins

    Energy Technology Data Exchange (ETDEWEB)

    Oliaiy, P.; Shokouhi, F.; Lamehi-Rachti, M.; Rahighi, J. [Van de Graaff Laboratory, AEOI, Tehran (Iran); Andami, P.; Dilmaghani, J.; Etezadi, M. [Tamashagah-e-Pool, General Office of Museums, MDFIR, Tehran (Iran)

    1999-07-01

    Ancient Iranian silver coins minted in various parts of the ancient Iran from Transoxiana to Mesopotamia over a time span of 460 years (247BC-208AD) during Parthians dynasty were analysed by PIXE with a 2.2 MeV proton beam. Forty seven silver coins owned by Tamashagah-e-Pool (museum of money) in Tehran were examined in this study. The possible correlation between the composition of coins and the minting time or the minting location of coins has been the prime objective of the present study. Elemental analysis of ancient coins could also reveal the direct relation with the political and economical situation and also with the metallurgy of the minting time. Results on the contents of principal component elements (Fe, Ni, Cu, As, Br, Ag, Sn, Sb, Ba, Au and Pb) are presented and discussed. (author)

  15. Fair loss-tolerant quantum coin flipping

    International Nuclear Information System (INIS)

    Berlin, Guido; Brassard, Gilles; Bussieres, Felix; Godbout, Nicolas

    2009-01-01

    Coin flipping is a cryptographic primitive in which two spatially separated players, who do not trust each other, wish to establish a common random bit. If we limit ourselves to classical communication, this task requires either assumptions on the computational power of the players or it requires them to send messages to each other with sufficient simultaneity to force their complete independence. Without such assumptions, all classical protocols are so that one dishonest player has complete control over the outcome. If we use quantum communication, on the other hand, protocols have been introduced that limit the maximal bias that dishonest players can produce. However, those protocols would be very difficult to implement in practice because they are susceptible to realistic losses on the quantum channel between the players or in their quantum memory and measurement apparatus. In this paper, we introduce a quantum protocol and we prove that it is completely impervious to loss. The protocol is fair in the sense that either player has the same probability of success in cheating attempts at biasing the outcome of the coin flip. We also give explicit and optimal cheating strategies for both players.

  16. Wanted: More Squares Among Professors

    Science.gov (United States)

    Fisher, William H.

    1969-01-01

    Professors who see the world and life in a context of sincerely held religious beliefs should be given the same tolerance and understanding which atheists and agnostics used to demand for themselves. (AD)

  17. The College Professor's Professional Liability

    Science.gov (United States)

    Griggs, Walter S.; Rubin, Harvey W.

    1977-01-01

    The growing number of professional liability suits against professors warrants a close examination of the need for and provisions of available insurance coverage. The evolution of tort liability, the question of negligence, and the professional liability policy are discussed. (LBH)

  18. Professor Igor Yevseyev: In Memoriam

    International Nuclear Information System (INIS)

    2012-01-01

    Dear readers and authors, June 3, 2012 will mark five months since Professor Igor Yevseyev, Deputy Editor-in-Chief of both journals Laser Physics and Laser Physics Letters passed away, suddenly and unexpectedly. He was 67. Born in Moscow, he entered one of the world's best schools of physics, Moscow Engineering Physics Institute (MEPhI). With this renowned educational and research institution he bonded an alliance for his entire life, starting as an undergraduate student in the Department of Theoretical Physics and later continued as graduate student, assistant professor, associated professor, and full professor in the same department, a rare accomplishment of a person. All those years he retained the love of his life—the love for physics. He worked tirelessly as a teacher and scholar in this captivating field of knowledge. Professor Yevseyev was one of the founders of the international journal of Laser Physics in 1990, the first academic English language journal published in the former USSR. Later, in 2004, the second journal, Laser Physics Letters was brought to the forum of global laser physics community. The idea behind this new title was Professor Yevseyev's initiative to reach the readers and participants with new pioneering and break-through research results more rapidly. His leadership and indefatigable dedication to the quality of published materials made it possible that this journal reached international recognition in a few short years. Still, in order to attract even more attention of potential contributors and readers, Professor Yevseyev originally proposed to conduct the International Laser Physics Workshop (LPHYS) on the annual basis. Since 1992 the Workshop has been conducted every year, each year in a different country. As in all previous years, Professor Yevseyev was the key organizer of this year's workshop in Calgary, Canada. Sadly, this workshop will take place without him. Editorial Board

  19. Application of PIXE to study ancient Iranian silver coins

    Energy Technology Data Exchange (ETDEWEB)

    Hajivaliei, M. [Department of Physics, Bu-Ali Sina University, Hamedan 65174 (Iran, Islamic Republic of)], E-mail: mhaji65@yahoo.com; Mohammadifar, Y. [Department of Archaeology, Bu-Ali Sina University, Hamedan 65174 (Iran, Islamic Republic of); Ghiyasi, K.; Jaleh, B. [Department of Physics, Bu-Ali Sina University, Hamedan 65174 (Iran, Islamic Republic of); Lamehi-Rachti, M.; Oliaiy, P. [Van de Graaff Laboratory, AEOI, P.O. Box 11365-8486, Tehran (Iran, Islamic Republic of)

    2008-04-15

    A number of ancient Iranian silver coins belonging to Khosrau II (592-626 A.D.) minted during Sasanians dynasty were analyzed using proton induced X-ray emission (PIXE) technique. The 2 MeV proton beam with a current of 2-3 nA from AEOI, Van de Graaff accelerator was used to bombard the coins. The characteristic X-rays emitted from the samples, were detected by a Si(Li) detector from ORTEC with an energy resolution of 170 eV at 5.9 keV. The detector was placed in the beam direction at 135 deg. The elements Cl, Ca, Ti, Mn, Fe, Cu, Au and Pb were observed in the coins along with the major component silver. The percentage of silver varied between 85.87 and 93.39%. The possible correlation between the composition of coins and the minting time or the minting location of coins was the prime goal. There was a negative correlation between copper and silver. The weight of coins varied between 4.02 and 4.30 g. Going through the results, it seems that the local mines were used to die-strike the coins. The obtained results are in good agreement with archaeological records.

  20. Application of PIXE to study ancient Iranian silver coins

    Science.gov (United States)

    Hajivaliei, M.; Mohammadifar, Y.; Ghiyasi, K.; Jaleh, B.; Lamehi-Rachti, M.; Oliaiy, P.

    2008-04-01

    A number of ancient Iranian silver coins belonging to Khosrau II (592-626 A.D.) minted during Sasanians dynasty were analyzed using proton induced X-ray emission (PIXE) technique. The 2 MeV proton beam with a current of 2-3 nA from AEOI, Van de Graaff accelerator was used to bombard the coins. The characteristic X-rays emitted from the samples, were detected by a Si(Li) detector from ORTEC with an energy resolution of 170 eV at 5.9 keV. The detector was placed in the beam direction at 135°. The elements Cl, Ca, Ti, Mn, Fe, Cu, Au and Pb were observed in the coins along with the major component silver. The percentage of silver varied between 85.87 and 93.39%. The possible correlation between the composition of coins and the minting time or the minting location of coins was the prime goal. There was a negative correlation between copper and silver. The weight of coins varied between 4.02 and 4.30 g. Going through the results, it seems that the local mines were used to die-strike the coins. The obtained results are in good agreement with archaeological records.

  1. Application of PIXE to study ancient Iranian silver coins

    International Nuclear Information System (INIS)

    Hajivaliei, M.; Mohammadifar, Y.; Ghiyasi, K.; Jaleh, B.; Lamehi-Rachti, M.; Oliaiy, P.

    2008-01-01

    A number of ancient Iranian silver coins belonging to Khosrau II (592-626 A.D.) minted during Sasanians dynasty were analyzed using proton induced X-ray emission (PIXE) technique. The 2 MeV proton beam with a current of 2-3 nA from AEOI, Van de Graaff accelerator was used to bombard the coins. The characteristic X-rays emitted from the samples, were detected by a Si(Li) detector from ORTEC with an energy resolution of 170 eV at 5.9 keV. The detector was placed in the beam direction at 135 deg. The elements Cl, Ca, Ti, Mn, Fe, Cu, Au and Pb were observed in the coins along with the major component silver. The percentage of silver varied between 85.87 and 93.39%. The possible correlation between the composition of coins and the minting time or the minting location of coins was the prime goal. There was a negative correlation between copper and silver. The weight of coins varied between 4.02 and 4.30 g. Going through the results, it seems that the local mines were used to die-strike the coins. The obtained results are in good agreement with archaeological records

  2. Investigations of corrosion phenomena on gold coins with SIMS

    International Nuclear Information System (INIS)

    Mayerhofer, K.E.; Piplits, K.; Traum, R.; Griesser, M.; Hutter, H.

    2005-01-01

    In order to establish a new handling procedure for contaminated coins, the Coin Cabinet and the Conservation Science Department of the Kunsthistorisches Museum, Vienna, initiated a research project on corrosion effects of gold coins. By now, investigations on historic and contemporary coins included optical microscopy, scanning electron microscopy (SEM), Auger electron microscopy (AES), X-ray photoelectron microscopy (XPS), and electrochemical methods showing the distribution of pollutants. This work focuses on secondary ion mass spectrometry (SIMS) investigations merely showing the distribution of electronegative elements, such as sulfur, oxygen, and chlorine on the surface. Sulfur is highly suspected of causing the observed corrosion phenomena, and is indeed enriched near polluting splints. Since SIMS is a destructive method, the investigated samples are test coins with intentionally added impurities. These coins were manufactured in cooperation with the Austrian Mint. They were treated with potassium polysulfide (K 2 S x ) for 8 h gaining a rapid corrosion of the surface. SIMS mass spectra, depth profiles, and images were done (a) at non-polluted areas (b) near polluted areas with slight coloring, and (c) directly at polluting stains showing enrichments of sulfur and chlorine. Due to the success of these investigations further studies on historic coins are intended

  3. Bit-commitment-based quantum coin flipping

    International Nuclear Information System (INIS)

    Nayak, Ashwin; Shor, Peter

    2003-01-01

    In this paper we focus on a special framework for quantum coin-flipping protocols, bit-commitment-based protocols, within which almost all known protocols fit. We show a lower bound of 1/16 for the bias in any such protocol. We also analyze a sequence of multiround protocols that tries to overcome the drawbacks of the previously proposed protocols in order to lower the bias. We show an intricate cheating strategy for this sequence, which leads to a bias of 1/4. This indicates that a bias of 1/4 might be optimal in such protocols, and also demonstrates that a more clever proof technique may be required to show this optimality

  4. The music of gold: can gold counterfeited coins be detected by ear?

    Science.gov (United States)

    Manas, Arnaud

    2015-07-01

    In this paper I investigate whether it is true and to what extent counterfeit coins can be detected by their sound frequency. I describe the different types of counterfeit coins encountered and their respective characteristics. I then use the Kirchoff thin plate theory to model a coin, and confirm the validity of the theory by listening to the tone of genuine and counterfeit coins.

  5. 31 CFR 100.4 - Gold coin and gold certificates in general.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Gold coin and gold certificates in... EXCHANGE OF PAPER CURRENCY AND COIN In General § 100.4 Gold coin and gold certificates in general. Gold coins, and gold certificates of the type issued before January 30, 1934, are exchangeable, as provided...

  6. A TorPath to TorCoin: Proof-of-Bandwidth Altcoins for Compensating Relays

    Science.gov (United States)

    2014-07-18

    TorCoin by checking the blockchain . Report Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting burden for the collection of...of occasional colluding circuits, TorCoin also limits the number of coins each circuit can mine. This coin number is included in the blockchain , so it

  7. Student Evaluations of College Professors: Are Female and Male Professors Rated Differently?

    Science.gov (United States)

    Basow, Susan A.; Silberg, Nancy T.

    1987-01-01

    Over 1,000 undergraduates evaluated 16 male and female professors in terms of teaching effectiveness and sex-typed characteristics. Male students gave female professors significantly poorer ratings than male professors on the six teaching evaluation measures. Female students evaluated female professors less favorably than male professors on three…

  8. Fully simulatable quantum-secure coin-flipping and applications

    DEFF Research Database (Denmark)

    Lunemann, Carolin; Nielsen, Jesper Buus

    2011-01-01

    schemes which we show how to construct in the given setting. We then show that the interactive generation of random coins at the beginning or during outer protocols allows for quantum-secure realizations of classical schemes, again without any set-up assumptions. As example applications we discuss quantum...... zero-knowledge proofs of knowledge and quantum-secure two-party function evaluation. Both applications assume only fully simulatable coin-flipping and mixed commitments. Since our framework allows to construct fully simulatable coin-flipping from mixed commitments, this in particular shows that mixed...

  9. Coin sorting unit; Koka ikkatsu tonyu shori unit

    Energy Technology Data Exchange (ETDEWEB)

    Oyabu, H.; Nishiyama, T.; Iijima, S. [Fuji Electric Co. Ltd., Tokyo (Japan)

    1999-08-10

    There are promising demands for barrier-free vending machines which can easily be used by the aged and the handicapped as well as ordinary people. Fuji Electric had developed an advanced unit for throwing in coins for the new hearty series that can smoothly be used by the aged and the handicapped. Its main advantages are (1) two or more coins can be thrown in together, (2) The port for putting in coins and the port for taking out change are of unified construction and simply adjoin each other, (3) Directional signs in braille are added. (author)

  10. Teaching Ethos of Reference Professors

    Directory of Open Access Journals (Sweden)

    Jules Marcel

    2018-03-01

    Full Text Available The present article discusses the teaching ethos of professors who are recognized for their good practice as trainers. The aim of our study is to analyze the influences of such professors’ professional constitution, as well as the explicit and/or tacit teaching knowledge they mobilize in their teaching practices. Based on Shulman, Gauthier, Tardif and Polanyi, we conducted interviews with three professors described by their students as reference. They were also observed in their classes, in the context of an undergraduate program in pedagogy at a public university. Data show similarities between the practices of the investigated professors, as well as a consistent description of their didactics, which is marked by intellective, moral, emotional and behavioral features.

  11. Quantum protocol for cheat-sensitive weak coin flipping.

    Science.gov (United States)

    Spekkens, R W; Rudolph, Terry

    2002-11-25

    We present a quantum protocol for the task of weak coin flipping. We find that, for one choice of parameters in the protocol, the maximum probability of a dishonest party winning the coin flip if the other party is honest is 1/sqrt[2]. We also show that if parties restrict themselves to strategies wherein they cannot be caught cheating, their maximum probability of winning can be even smaller. As such, the protocol offers additional security in the form of cheat sensitivity.

  12. Ritualizing the Use of Coins in Ancient Greek Sanctuaries

    DEFF Research Database (Denmark)

    Lykke, Anne

    2017-01-01

    The article explores aspects of the monetization of the Greek sanctuaries, more specifically how space was created to accommodate coins as objects and their use within the sacred sphere. Except in a limited number of cases, our understanding is still quite fragmented. Where most research has...... of coins and in extension to develop an understanding of the possible changes in human behavior in the sanctuaries based on this evidence....

  13. Professors of the New Economy.

    Science.gov (United States)

    Wilson, Robin

    2000-01-01

    Profiles four professors who epitomize the increasing influence of academe on new technology-driven Internet business: a start-up maven, Steven Kaplan; a social psychologist, Michael Ray; a cyberlawyer, David Post; and an e-commerce expert, Andrew B. Whinston. (DB)

  14. ICT Use by Journalism Professors in Colombia

    Science.gov (United States)

    Hung, Elias Said

    2011-01-01

    This article analyses how journalism professors at Colombian universities use information and communications technologies (ICT) in their teaching. Survey data was obtained during the first trimester of 2009 from 63 professors in journalism departments and from a total of 865 professors who are affiliated with journalism departments at 29…

  15. The methods of coin English neologisms and the characteristics of their translations in Russian and Chinese languages

    Directory of Open Access Journals (Sweden)

    - Ху Пэйпэй

    2011-12-01

    Full Text Available This article deals with the methods of coining new words in modern English language. Compound - a productive method of coining English neologisms. Blend became a trend of coining English new words.

  16. Professor dr hab. Maria Lisiewska

    Directory of Open Access Journals (Sweden)

    Małgorzata Stasińska

    2015-08-01

    Full Text Available The article presents the biography and scientific achievements of Professor Maria Lisiewska. She earned master’s degree and Ph.D. in natural sciences from Adam Mickiewicz University in Poznań. After earning her doctoral degree, she stayed at Adam Mickiewicz University in Poznań and conducted her thrilling research on mycology and taught until now. Prof. Maria Lisiewska is an author of many books, articles, and other scholarly reports.

  17. Contact traction analysis for profile change during coining process

    International Nuclear Information System (INIS)

    Kim, Hyung Kyu; Yoon, Kyung Ho; Kang, Heung Seok; Song, Kee Nam

    2002-01-01

    Contact tractions are analysed in the case of the change in contact profile occurring during the coining process of a thin strip material. The changed profile is assumed as a concave circular arc in the central part of the contact region which is smoothly connected with convex circular arcs at both sides, referring to the actual measurement of the coined material. The profile is discretized and the known solutions of singular integral equations are used. Since the contact profile affects the contact traction and relevant tribological behaviour (e.g. wear) as well, an accurate definition of the profile is necessary in the analysis of material failure. Parametric study is conducted with the variation of the radii and distance of the arcs, which defines the height difference between the summits of the arcs. Considered is the contact profile, which can give the negligible variation of the traction in comparison with that before the coining process

  18. Finite element design procedure for correcting the coining die profiles

    Science.gov (United States)

    Alexandrino, Paulo; Leitão, Paulo J.; Alves, Luis M.; Martins, Paulo A. F.

    2018-05-01

    This paper presents a new finite element based design procedure for correcting the coining die profiles in order to optimize the distribution of pressure and the alignment of the resultant vertical force at the end of the die stroke. The procedure avoids time consuming and costly try-outs, does not interfere with the creative process of the sculptors and extends the service life of the coining dies by significantly decreasing the applied pressure and bending moments. The numerical simulations were carried out in a computer program based on the finite element flow formulation that is currently being developed by the authors in collaboration with the Portuguese Mint. A new experimental procedure based on the stack compression test is also proposed for determining the stress-strain curve of the materials directly from the coin blanks.

  19. Large family of quantum weak coin-flipping protocols

    International Nuclear Information System (INIS)

    Mochon, Carlos

    2005-01-01

    Each classical public-coin protocol for coin flipping is naturally associated with a quantum protocol for weak coin flipping. The quantum protocol is obtained by replacing classical randomness with quantum entanglement and by adding a cheat detection test in the last round that verifies the integrity of this entanglement. The set of such protocols defines a family which contains the protocol with bias 0.192 previously found by the author, as well as protocols with bias as low as 1/6 described herein. The family is analyzed by identifying a set of optimal protocols for every number of messages. In the end, tight lower bounds for the bias are obtained which prove that 1/6 is optimal for all protocols within the family

  20. Paper money and coins as potential vectors of transmissible disease.

    Science.gov (United States)

    Angelakis, Emmanouil; Azhar, Esam I; Bibi, Fehmida; Yasir, Muhammad; Al-Ghamdi, Ahmed K; Ashshi, Ahmad M; Elshemi, Adel G; Raoult, Didier

    2014-01-01

    Paper currency and coins may be a public health risk when associated with the simultaneous handling of food and could lead to the spread of nosocomial infections. Banknotes recovered from hospitals may be highly contaminated by Staphylococcus aureus. Salmonella species, Escherichia coli and S. aureus are commonly isolated from banknotes from food outlets. Laboratory simulations revealed that methicillin-resistant S. aureus can easily survive on coins, whereas E. coli, Salmonella species and viruses, including human influenza virus, Norovirus, Rhinovirus, hepatitis A virus, and Rotavirus, can be transmitted through hand contact. Large-scale, 16S rRNA, metagenomic studies and culturomics have the capacity to dramatically expand the known diversity of bacteria and viruses on money and fomites. This review summarizes the latest research on the potential of paper currency and coins to serve as sources of pathogenic agents.

  1. Professor

    DEFF Research Database (Denmark)

    Hauggaard-Nielsen, Henrik

    2017-01-01

    DEBAT: Land og by hænger uløseligt sammen - både i forhold til fødevareproduktion og -distribuering – men også i forhold til vores fælles natur. Når vi bor i byerne, er vi tæt forbundet og afhængige af de tjenester, som landbruget bidrager med – fødevarer, sikring af rent grundvand, bioenergi, re...

  2. professores

    Directory of Open Access Journals (Sweden)

    Sandra Isabel Rodrigues Magalhães

    2006-01-01

    Full Text Available The development of classroom practices focused on scientific literacy as animportant outcome of schooling forces the re-thinking of science teacher’sformation. In this sense, this paper reports a study which involved theconception, development, implement and evaluation of an in-service program(IP focused on the Science — Technology — Society (STS education alongwith critical thinking (CT [STS/CT]. From the obtained results it was concludedthat the in-service program contributed for the teachers to (reconstructconceptions about Science, Technology and Society, to (reconstructknowledge related to the STS orientation and critical thinking and to promotetheir pre-disposition to implement STS/CTdidactic and pedagogic practices

  3. Micro-XRF analysis of silver coins from medieval Poland

    Energy Technology Data Exchange (ETDEWEB)

    Hoyo-Meléndez, Julio M. del, E-mail: jdelhoyo@muzeum.krakow.pl [Laboratory of Analysis and Non-Destructive Investigation of Heritage Objects, National Museum in Krakow, Krakow 31109 (Poland); Świt, Paweł [Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Krakow 30239 (Poland); Faculty of Chemistry, Jagiellonian University, Krakow 30060 (Poland); Matosz, Marta [Laboratory of Analysis and Non-Destructive Investigation of Heritage Objects, National Museum in Krakow, Krakow 31109 (Poland); Woźniak, Mateusz [Numismatic Cabinet, National Museum in Krakow, Krakow 31109 (Poland); Klisińska-Kopacz, Anna [Laboratory of Analysis and Non-Destructive Investigation of Heritage Objects, National Museum in Krakow, Krakow 31109 (Poland); Bratasz, Łukasz [Laboratory of Analysis and Non-Destructive Investigation of Heritage Objects, National Museum in Krakow, Krakow 31109 (Poland); Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Krakow 30239 (Poland)

    2015-04-15

    Highlights: •A micro-XRF study of the surface composition of Polish Ag coins was conducted. •The main elements are Ag, Cu and Pb; with Ag concentrations in the 82–98% range. •The results indicate that revaluation probably took place during 995–1031. -- Abstract: X-ray fluorescence (XRF) analysis has become a standard method in archaeological science due to its non-invasive and non-destructive nature. This technique has extensively been used for the study of numismatic collections since the data derived from it can be correlated with manufacturing processes, provenance of raw materials, and geographical distribution of ancient mints. A group of 71 silver coins of the first Piasts: Boleslaus the Brave (996–1025) and Mieszko II Lambert (1025–1034) belonging to the collections of the National Museum in Krakow have been characterized using micro-XRF spectrometry. This is the most numerous collection of their coins representing nearly 30% of all known coins from these rulers. The research has focused on evaluating the use of this technique as a screening tool for elemental surface characterization of the alloys. Surveyed coins are mainly constituted by Ag, Cu and Pb along with trace levels of Fe, Ni, Zn, Au, Hg, Bi, and Br. Quantitative analyses have revealed Ag contents in the 81.6–97.5% range for all the evaluated coins. This study had the goal of providing information about the elemental composition of these objects, which will serve to enhance the existing knowledge about geographical and chronological diversification of Polish numismatic collections.

  4. Analysis of selective laser cleaning of patina on bronze coins

    International Nuclear Information System (INIS)

    Buccolieri, G; Nassisi, V; Castellano, A; Di Giulio, M; Giuffreda, E; Delle Side, D; Velardi, L; Torrisi, L; Buccolieri, A

    2014-01-01

    The patina, is the result of a large number of chemical, electrochemical and physical processes which occur spontaneously during interaction of metal surfaces with the environment. In this work we want to analyze and remove the patina in artefacts, exposed to atmosphere for various decades. Here, experimental results about the laser cleaning of bronze coins by KrF (248 nm) and Nd:YAG (532 nm) lasers are reported. Both laser wavelengths were efficient to reduce the chlorine concentration on the surface of the coins more than 80 %, as demonstrated by Energy Dispersive X-Ray Fluorescence analyses.

  5. Archaeometrical studies of Greek and Roman silver coins

    International Nuclear Information System (INIS)

    Bugoi, R.; Constantinescu, B.; Constantin, F.; Catana, D.; Plostinaru, D.

    1999-01-01

    Quantitative analyses of various silver coins from the firs century BC, found on current Romanian territory (Thasian tetradrachmae, Apollonia and Dyrrachium drachmae, Roman republican denarii) were performed using PIXE (3 MeV external proton beam) and XRF (1.1 GBq 241 Am source). The elemental analysis provided evidence of a great variety of monetary alloys and helped Romanian archaeologists to classify the coins, in terms of their provenance, as originals, copies or imitations minted in different areas of the Balkan-Carpathian region. (author)

  6. The Economics of BitCoin Price Formation

    OpenAIRE

    Pavel Ciaian; Miroslava Rajcaniova; d'Artis Kancs

    2014-01-01

    This is the first article that studies BitCoin price formation by considering both the traditional determinants of currency price, e.g., market forces of supply and demand, and digital currencies specific factors, e.g., BitCoin attractiveness for investors and users. The conceptual framework is based on the Barro (1979) model, from which we derive testable hypotheses. Using daily data for five years (2009–2015) and applying time-series analytical mechanisms, we find that market forces and Bit...

  7. How to deal with malleability of BitCoin transactions

    OpenAIRE

    Andrychowicz, Marcin; Dziembowski, Stefan; Malinowski, Daniel; Mazurek, Łukasz

    2013-01-01

    BitCoin transactions are malleable in a sense that given a transaction an adversary can easily construct an equivalent transaction which has a different hash. This can pose a serious problem in some BitCoin distributed contracts in which changing a transaction's hash may result in the protocol disruption and a financial loss. The problem mostly concerns protocols, which use a "refund" transaction to withdraw a deposit in a case of the protocol interruption. In this short note, we show a gener...

  8. Quantum walk with a four-dimensional coin

    International Nuclear Information System (INIS)

    Hamilton, Craig S; Gabris, Aurel; Jex, Igor; Barnett, Stephen M

    2011-01-01

    We examine the physical implementation of a discrete time quantum walk with a four-dimensional coin. Our quantum walker is a photon moving repeatedly through a time delay loop, with time being our position space. The quantum coin is implemented using the internal states of the photon: the polarization and two of the orbital angular momentum states. We demonstrate how to implement this physically and what components would be needed. We then illustrate some of the results that could be obtained by performing the experiment.

  9. 77 FR 15457 - Pricing for the 2012 American Eagle Silver Proof Coin

    Science.gov (United States)

    2012-03-15

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2012 American Eagle Silver Proof Coin AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2012 American Eagle Silver Proof Coin. The coins will be offered...

  10. 76 FR 53717 - Pricing for the 2011 American Eagle Silver Proof Coin

    Science.gov (United States)

    2011-08-29

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2011 American Eagle Silver Proof Coin AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the re-pricing of the 2011 American Eagle Silver Proof Coin. The price of the coins...

  11. 76 FR 33026 - Pricing for the 2011 American Eagle Silver Proof Coin

    Science.gov (United States)

    2011-06-07

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2011 American Eagle Silver Proof Coin AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2011 American Eagle Silver Proof Coin. The coin will be offered for...

  12. 'Supermentoring' of assistant professors' teaching

    DEFF Research Database (Denmark)

    Lauridsen, Ole

    Aarhus University offers a mandatory pedagogical training program for assistant professors, required in order to obtain tenure at a Danish university. At Business and Social Sciences, this program is supplemented by voluntary observation and (first of all formative) supervision of the assistant...... professors’ teaching practice. This offer is given is (i) because many young university teachers face problems putting pedagogical theory into practice – even though the program mentioned is practice-oriented, and (ii) because many of them (partly due to (i)) lack self-confidence as to teaching...

  13. Entrevista com professor Bertrand Badie

    OpenAIRE

    Mere Marques Aveiro, Thais

    2015-01-01

    Bertrand Badie é cientista político, professor na Sciences Po, Paris, pesquisador do CERI (Centro de Estudos e Pesquisas Internacionais), codiretor da coleção L’etat du monde, publicada anualmente desde 2010 e coeditor da Enciclopédia Internacional de Ciência Política. Entre 2002 e 2005, foi Diretor do Centro de Estudos Internacionais sobre a paz e resoluções de conflitos. Por dez anos (1994 –2003), foi Diretor das publicações da Sciences Po.Desde 2000, ministra o Curso Espaço Mundial que, a ...

  14. Interview with Professor Mark Wilcox.

    Science.gov (United States)

    Wilcox, Mark

    2016-08-01

    Mark Wilcox speaks to Georgia Patey, Commissioning Editor: Professor Mark Wilcox is a Consultant Microbiologist and Head of Microbiology at the Leeds Teaching Hospitals (Leeds, UK), the Professor of Medical Microbiology at the University of Leeds (Leeds, UK), and is the Lead on Clostridium difficile and the Head of the UK C. difficile Reference Laboratory for Public Health England (PHE). He was the Director of Infection Prevention (4 years), Infection Control Doctor (8 years) and Clinical Director of Pathology (6 years) at the Leeds Teaching Hospitals. He is Chair of PHE's Rapid Review Panel (reviews utility of infection prevention and control products for National Health Service), Deputy Chair of the UK Department of Health's Antimicrobial Resistance and Healthcare Associated Infection Committee and a member of PHE's HCAI/AR Programme Board. He is a member of UK/European/US working groups on C. difficile infection. He has provided clinical advice as part of the FDA/EMA submissions for the approval of multiple novel antimicrobial agents. He heads a healthcare-associated infection research team at University of Leeds, comprising approximately 30 doctors, scientists and nurses; projects include multiple aspects of C. difficile infection, diagnostics, antimicrobial resistance and the clinical development of new antimicrobial agents. He has authored more than 400 publications, and is the coeditor of Antimicrobial Chemotherapy (5th/6th/7th Editions, 15 December 2007).

  15. Microscale Electrolysis Using Coin-Type Lithium Batteries and Filter

    Science.gov (United States)

    Kamata, Masahiro; Yajima, Seiko

    2013-01-01

    An educational experiment illustrates the electrolysis of water and copper chloride to middle school science students. The electrolysis cell is composed of filter paper soaked with Na[subscript 2]SO[subscript 4] or CuCl[subscript 2] aqueous solution sandwiched, along with a sheet of platinum foil, between two coin-type lithium batteries. When the…

  16. $158 per Quart: The Value of a Volume of Coins

    Science.gov (United States)

    Kcenich, Stephen; Boss'e, Michael J.

    2008-01-01

    The ubiquitous change jar (or any other container) is the focus of this investigation. Using random pocket change, a distribution is determined and statistical tools are employed to calculate the value of given volumes of coins. This brief investigation begins by considering money, which piques the interest of most students, and uses this…

  17. Novice in Secondary School--The Coin Has Two Sides

    Science.gov (United States)

    Ulvik, Marit; Smith, Kari; Helleve, Ingrid

    2009-01-01

    The aim of this study is to gain an insight into novice teachers' diverse experiences. The study is conducted among nine beginning teachers in upper secondary school in Norway, and the research instrument was semi structured interviews. The main findings indicate that there are two sides of the coin of being a new teacher, positive as well as less…

  18. Statistical Significance and Effect Size: Two Sides of a Coin.

    Science.gov (United States)

    Fan, Xitao

    This paper suggests that statistical significance testing and effect size are two sides of the same coin; they complement each other, but do not substitute for one another. Good research practice requires that both should be taken into consideration to make sound quantitative decisions. A Monte Carlo simulation experiment was conducted, and a…

  19. Fine Coining of Bulk Metal Formed Parts in Digital Environment

    International Nuclear Information System (INIS)

    Pepelnjak, T.; Kuzman, K.; Krusic, V.

    2007-01-01

    At present the production of bulk metal formed parts in the automotive industry must increasingly fulfil demands for narrow tolerance fields. The final goal of the million parts production series is oriented towards zero defect production. This is possible by achieving production tolerances which are even tighter than the prescribed ones. Different approaches are used to meet this demanding objective affected by many process parameters. Fine coining as a final forming operation is one of the processes which enables the production of good manufacturing tolerances and high process stability. The paper presents the analyses of the production of the inner race and a digital evaluation of manufacturing tolerances caused by different material parameters of the workpiece. Digital optimisation of the fine coining with FEM simulations was performed in two phases. Firstly, fine coining of the inner racer in a digital environment was comparatively analysed with the experimental work in order to verify the accuracy and reliability of digitally calculated data. Secondly, based on the geometrical data of a digitally fine coined part, tool redesign was proposed in order to tighten production tolerances and increase the process stability of the near-net-shaped cold formed part

  20. Radiologic Management Of Impacted Coin In The Oesophagus – A ...

    African Journals Online (AJOL)

    Long standing foreign body impaction with weight loss, consolidated lungs and failure to thrive are documented presentations of FB in the oesophagus5. We present a case of a 20 year old male who inadvertently swallowed a coin which got impacted at the thoracic inlet – one of the conventional areas of constriction.

  1. Ritualizing the Use of Coins in Ancient Greek Sanctuaries

    DEFF Research Database (Denmark)

    Lykke, Anne

    2017-01-01

    The article explores aspects of the monetization of the Greek sanctuaries, more specifically how space was created to accommodate coins as objects and their use within the sacred sphere. Except in a limited number of cases, our understanding is still quite fragmented. Where most research has...

  2. Euro banknotes and coins in France in 2013

    OpenAIRE

    G. Torre.

    2014-01-01

    In 2013, net issuance of banknotes rose by EUR 6.1 billion. This increase, mainly attributable to demand for banknotes for transaction purposes (10€, 20€, and 50€), has tended to slow down over the past few years. Coin issuance also decelerated.

  3. The digital agenda of virtual currencies: Can BitCoin become a global currency?

    OpenAIRE

    CIAIAN PAVEL; RAJCANIOVA MIROSLAVA; KANCS D'ARTIS

    2015-01-01

    This paper identifies and analyzes BitCoin features which may facilitate BitCoin to become a global currency, as well as characteristics which may impede the use of BitCoin as a medium of exchange, a unit of account and a store of value, and compares BitCoin with standard currencies with respect to the main functions of money. Among all analyzed BitCoin features, the extreme price volatility stands out most clearly compared to standard currencies. In order to understand the reasons for such e...

  4. Two Sides of the Same Coin: Politics in the Classroom

    Science.gov (United States)

    Berg, Steven L.

    2005-01-01

    This paper presents interviews with David Horowitz, an author, professor, and President of the Center for the Study of Popular Culture headquartered in Los Angeles, California and Carol King, an adjunct professor of theology at Xavier University in Cincinnati, Ohio, and manager of the Cinergy Foundation, also in Cincinnati. The interviews present…

  5. Two Sides of the Same Coin: Authentic Assessment

    Science.gov (United States)

    Berg, Steven L.

    2006-01-01

    This paper presents interviews with Dr. Jon Mueller and Dr. Paula Harris. Dr. Jon Mueller is a professor of Psychology at North Central College in Naperville, Illinois. Dr. Paula Harris is a professor in the Department of Language, Literature, and Arts at Jackson Community College in Jackson, Michigan. In these interviews, they present a…

  6. Two Sides of the Same Coin: Faculty Doing Research

    Science.gov (United States)

    Berg, Steven L.

    2006-01-01

    Dr. Richard Sagor is the Educational Leadership Program Director and a professor in the Department of Education at Lewis & Clark College in Portland, Oregon. Dr. Howard Tinberg is a professor of English at Bristol Community College in Fall River, Massachusetts, where he is also director of the Writing Lab. He is the editor of the journal…

  7. Some metallurgical aspects of ancient silver coins discovered in Romania - originals and imitations

    International Nuclear Information System (INIS)

    Constantinescu, Bogdan; Cojocaru, Viorel; Bugoi, Roxana; Sasianu, Alexandru

    2009-01-01

    The paper presents an extensive archaeometrical study of two categories of ancient silver coins - Apollonia and Dyrrachium silver drachmae and Dacian drachamae. The coins of the former type were emitted by the-above mentioned Greek colonies which were under Pompejus authority during Ist Century B.C., while the latter type were Dacian imitations of the coins emitted by the Macedonian king Phillip II. All analyzed coins circulated in Dacia during the Ist Century B.C.; they were found on the territory of present Romania. As an explanation for the presence of a large number of Apollonia and Dyrrachium drachmae on the Dacian territory, it was speculated that these coins were used by Pompejus as a payment for the Dacian mercenaries fighting in the civil war on his side. To determine the elemental composition of the coins, two analytical methods were employed: Energy Dispersive X-Ray Fluorescence (ED-XRF) based on radioactive source excitation ( 241 Am and 238 Pu) and in-vacuum 3 MeV Proton Induced X-ray Emission (PIXE). For Apollonia and Dyrrachium drachmae, the following types of coins were found: original coins, debased coins (silver content down to 70%), official counterfeits - coins minted with the original dies - made out of bronze, official counterfeits of tin, and plated coins - bronze core covered with a 0.2-0.5 mm silver layer. For the Dacian drachmae, an interesting evolution of the tin content was put in evidence.. (Author)

  8. Cognitive Mechanisms of Insight: The Role of Heuristics and Representational Change in Solving the Eight-Coin Problem

    Science.gov (United States)

    Öllinger, Michael; Jones, Gary; Faber, Amory H.; Knoblich, Günther

    2013-01-01

    The 8-coin insight problem requires the problem solver to move 2 coins so that each coin touches exactly 3 others. Ormerod, MacGregor, and Chronicle (2002) explained differences in task performance across different versions of the 8-coin problem using the availability of particular moves in a 2-dimensional search space. We explored 2 further…

  9. Experimental Quantum-Walk Revival with a Time-Dependent Coin

    Science.gov (United States)

    Xue, P.; Zhang, R.; Qin, H.; Zhan, X.; Bian, Z. H.; Li, J.; Sanders, Barry C.

    2015-04-01

    We demonstrate a quantum walk with time-dependent coin bias. With this technique we realize an experimental single-photon one-dimensional quantum walk with a linearly ramped time-dependent coin flip operation and thereby demonstrate two periodic revivals of the walker distribution. In our beam-displacer interferometer, the walk corresponds to movement between discretely separated transverse modes of the field serving as lattice sites, and the time-dependent coin flip is effected by implementing a different angle between the optical axis of half-wave plate and the light propagation at each step. Each of the quantum-walk steps required to realize a revival comprises two sequential orthogonal coin-flip operators, with one coin having constant bias and the other coin having a time-dependent ramped coin bias, followed by a conditional translation of the walker.

  10. Professor Gender, Age, and "Hotness" in Influencing College Students' Generation and Interpretation of Professor Ratings

    Science.gov (United States)

    Sohr-Preston, Sara L.; Boswell, Stefanie S.; McCaleb, Kayla; Robertson, Deanna

    2016-01-01

    A sample of 230 undergraduate psychology students rated their expectations of a bogus professor (who was randomly designated a man or woman and "hot" versus "not hot") based on ratings and comments found on RateMyProfessors.com. Five professor qualities were derived using principal components analysis: dedication,…

  11. Observations on Professor Hayek's Plan

    Directory of Open Access Journals (Sweden)

    Ludwig von Mises

    2009-01-01

    Full Text Available This memorandum was written at the request of Henry Hazlitt to provide Mises’s comments on and concerns about F.A. Hayek’s initial proposals for what became the Mont Pèlerin Society. Mises stresses that those who favor liberty and freedom and oppose totalitarianism must also oppose interventionism. The memo argues that those who fought and lost against the rising tide of totalitarianism at the turn of the 20th Century lost their battles because they settled for middle-of-the-road policies that conceded considerable ground to the socialists. The weak point in Professor Hayek’s plan is that it relies upon the cooperation of many men who are today’s middle-of-the-roaders. As interventionists, they may not be the hoped-for intellectual pioneers to inspire people to build a freer world.

  12. Professor Camillo Negro's Neuropathological Films.

    Science.gov (United States)

    Chiò, Adriano; Gianetto, Claudia; Dagna, Stella

    2016-01-01

    Camillo Negro, Professor in Neurology at the University of Torino, was a pioneer of scientific film. From 1906 to 1908, with the help of his assistant Giuseppe Roasenda and in collaboration with Roberto Omegna, one of the most experienced cinematographers in Italy, he filmed some of his patients for scientific and educational purposes. During the war years, he continued his scientific film project at the Military Hospital in Torino, filming shell-shocked soldiers. In autumn 2011, the Museo Nazionale del Cinema, in partnership with the Faculty of Neurosciences of the University of Torino, presented a new critical edition of the neuropathological films directed by Negro. The Museum's collection also includes 16 mm footage probably filmed in 1930 by Doctor Fedele Negro, Camillo's son. One of these films is devoted to celebrating the effects of the so-called "Bulgarian cure" on Parkinson's disease.

  13. The Professors behind the MOOC Hype

    Science.gov (United States)

    Kolowich, Steve

    2013-01-01

    The largest-ever survey of professors who have taught MOOCs, or massive open online courses, shows that the process is time-consuming, but, according to the instructors, often successful. Nearly half of the professors felt their online courses were as rigorous academically as the versions they taught in the classroom. The survey, conducted by "The…

  14. Professor Nukem - et eksperiment med oplevelsesbaseret forskningsformidling

    DEFF Research Database (Denmark)

    Sandvik, Kjetil; Thorhauge, Anne Mette

    2007-01-01

    Professor Nukem er resultatet af et forskningsprojekt om oplevelsesbaseret forskningsformidling der har form som et computerspil med tilhørende website, hvor brugeren interaktivt kan engagere sig i forskning omkring sociale og kulturelle aspekter ved computerspil. Professor Nukem kan spilles på...

  15. Professor Kodi Husimi promoted accelerator projects

    International Nuclear Information System (INIS)

    Kikuchi, Ken

    2009-01-01

    The main aim of my article is to describe how deeply Professor Husimi devoted himself to promote large accelerator projects in Japan, as the establishment of National Laboratory for High Energy Physics (KEK), Photon Factory and TRISTAN, in which I myself was deeply involved. In addition, some topics related that I was a student of Professor Husimi are also reported. (author)

  16. The Reluctant Professor: Implications for University Management

    Science.gov (United States)

    Schein, Edgar H.

    1973-01-01

    Stating the belief that most analyses of the university fail to deal realistically with the role of the professor, the author's purpose is to show why it is difficult and possible undesirable to involve professors deeply in issues of university government. (Author/JB)

  17. Remembering for tomorrow: Professor Mansour Ali Haseeb.

    Science.gov (United States)

    Salih, Mustafa Abdalla M

    2013-01-01

    This is a highlight of the obituary ceremony in tribute to Professor Mansour Ali Haseeb (1910 - 1973), organized by the Medical Students Association of the Faculty of Medicine, the University of Khartoum (U of K). Professor Haseeb has been the first Sudanese Professor and first Dean of the Faculty of Medicine. He was an outstanding humane teacher, mentor and researcher, and was awarded the international Dr. Shousha Foundation Prize and Medal by the WHO. He was also an active citizen in public life and became Mayor of Omdurman City. The obituary ceremony reflected the feelings of the medical community and included speeches by Professor Abdalla El Tayeb, President of U of K; the Dean, Faculty of Medicine; the Late Professor Haseeb's colleagues and students, His family representative, and an elegy poem.

  18. Analysis of ancient Indian silver punch-marked coins by external PIXE

    International Nuclear Information System (INIS)

    Rautray, Tapash R.; Nayak, Suman S.; Tripathy, Bipin B.; Das, Saubhagyalaxmi; Das, Manas R.; Das, Satya R.; Chattopadhyay, Pranab K.

    2011-01-01

    Seven silver punch-marked coins were analysed using external particle induced X-ray emission technique. The main group of elements like Ag, Cu, Au, Pb and Fe were estimated along with a number of trace/minor elements such as K, Ca, Ti, V, Cr, Mn, Co, Ni and Rb in the analysed silver coins. Gold was found in all the coins and varied between 0.7% and 6.2% indicating the better economic condition of that civilisation. - Highlights: → The silver punch-marked coins, in the current study, were in use in India between 6th century BC to 6th century AD and have been analysed by in-air PIXE. → These sets of coins have immense archaeological importance because of their very rare availability. → These coins are distinguished from other coins because of the presence of gold as major element. → While the British period coins were fabricated using modern technologies, the punch-marked coins were shaped manually with developed metal technology. → The analysis of punch-marked coins using external PIXE beam has been done for the first time, which is unique of its kind.

  19. Who Coined the Concept of Ethnocentrism? A Brief Report

    Directory of Open Access Journals (Sweden)

    Boris Bizumic

    2014-01-01

    Full Text Available It is widely assumed that Sumner coined the concept of ethnocentrism in 1906. This attribution is prominent in psychology and the social sciences and is found in major works on ethnocentrism, intergroup relations, and prejudice. A review of classic sources written in German, Polish, and English shows that the concept had existed in numerous publications for at least several decades before Sumner's writings on ethnocentrism (e.g., Gumplowicz, 1879, 1881. This article presents early conceptualizations of ethnocentrism and potential influences on Sumner. It also discusses implications of this conceptual history, such as biases that may have contributed to the widespread belief that Sumner coined the concept. It is argued that psychologists and other social scientists should stop attributing the origin of the concept to Sumner, despite his important role in popularizing it, and, in general, should engage more with their intellectual history in different languages.

  20. Natural biased coin encoded in the genome determines cell strategy.

    Directory of Open Access Journals (Sweden)

    Faezeh Dorri

    Full Text Available Decision making at a cellular level determines different fates for isogenic cells. However, it is not yet clear how rational decisions are encoded in the genome, how they are transmitted to their offspring, and whether they evolve and become optimized throughout generations. In this paper, we use a game theoretic approach to explain how rational decisions are made in the presence of cooperators and competitors. Our results suggest the existence of an internal switch that operates as a biased coin. The biased coin is, in fact, a biochemical bistable network of interacting genes that can flip to one of its stable states in response to different environmental stimuli. We present a framework to describe how the positions of attractors in such a gene regulatory network correspond to the behavior of a rational player in a competing environment. We evaluate our model by considering lysis/lysogeny decision making of bacteriophage lambda in E. coli.

  1. Strange attractors in a chaotic coin flip simulation

    International Nuclear Information System (INIS)

    Cooper, Crystal

    2006-01-01

    Presented is a computer simulation used to model a variation of the game known as the gambler's ruin. A rich player gambles with a set amount of money m. The poor player starts out with zero capital, and is allowed to flip a coin in order to try to win the money. If the coin is heads, the poor player wins a dollar but if it is tails, the player loses a dollar. The poor player is always allowed to win the first flip, and is allowed to flip n times, even when the amount of money lost reaches zero. The dynamics of this process is chaotic due to fluctuations in the variance of the amount of money

  2. Policing and COIN Operations: Lessons Learned, Strategies, and Future Directions

    Science.gov (United States)

    2011-01-01

    i. Financial flows are critical paths. ii. Drug markets, counterfeiting, smuggling, gambling, prostitution , identity theft: these are 6 POLICING...notably in Colombia . Border patrols, paramilitary and special branch police are also useful in COIN, according to Celeski, and were critical to...insurgents at the local level and “by, with and through” supporting the local population. First is the original defeat of the FARC in Colombia . Plan

  3. Roman sophisticated surface modification methods to manufacture silver counterfeited coins

    Science.gov (United States)

    Ingo, G. M.; Riccucci, C.; Faraldi, F.; Pascucci, M.; Messina, E.; Fierro, G.; Di Carlo, G.

    2017-11-01

    By means of the combined use of X-ray photoelectron spectroscopy (XPS), optical microscopy (OM) and scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS) the surface and subsurface chemical and metallurgical features of silver counterfeited Roman Republican coins are investigated to decipher some aspects of the manufacturing methods and to evaluate the technological ability of the Roman metallurgists to produce thin silver coatings. The results demonstrate that over 2000 ago important advances in the technology of thin layer deposition on metal substrates were attained by Romans. The ancient metallurgists produced counterfeited coins by combining sophisticated micro-plating methods and tailored surface chemical modification based on the mercury-silvering process. The results reveal that Romans were able systematically to chemically and metallurgically manipulate alloys at a micro scale to produce adherent precious metal layers with a uniform thickness up to few micrometers. The results converge to reveal that the production of forgeries was aimed firstly to save expensive metals as much as possible allowing profitable large-scale production at a lower cost. The driving forces could have been a lack of precious metals, an unexpected need to circulate coins for trade and/or a combinations of social, political and economic factors that requested a change in money supply. Finally, some information on corrosion products have been achieved useful to select materials and methods for the conservation of these important witnesses of technology and economy.

  4. Analysis of surface stains on modern gold coins

    Energy Technology Data Exchange (ETDEWEB)

    Corregidor, V., E-mail: vicky.corregidor@itn.pt [Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, E.N. 10, 2686-953 Sacavém (Portugal); CFNUL, Av. Prof. Gama Pinto 2, 1649-003 Lisboa (Portugal); Alves, L.C. [Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, E.N. 10, 2686-953 Sacavém (Portugal); CFNUL, Av. Prof. Gama Pinto 2, 1649-003 Lisboa (Portugal); Cruz, J. [Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, E.N. 10, 2686-953 Sacavém (Portugal); CFNUL, Av. Prof. Gama Pinto 2, 1649-003 Lisboa (Portugal); Dep. Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-216 Caparica (Portugal)

    2013-07-01

    It is a mandatory practice in the European Mint Houses to provide a certificate of guarantee of their products specially when issuing commemorative gold or silver coins. This practise should assure satisfaction and trust both for the mint house and for the demanding numismatic collector. For these reasons the Mint Houses follow a strict quality control in all the production steps in order to ensure a no-defect, fully supervised output. In spite of all the undertaken precautions, different surface stains with diverse origin on gold coins recently minted in Europe were observed. Those were compositionally studied by means of IBA techniques at the end-stage nuclear microprobe installed at IST/ITN. From this study it was possible to identify several possible sources for these stains. The presence of defects at the surface of these commemorative coins address the need of improving the quality control system and the results here presented point out where these improvements should occur, in order to reduce/eliminate them and give the customer a product that with time probably will be revalued.

  5. PROFESSORES: IMAGENS DO FUTURO PRESENTE

    Directory of Open Access Journals (Sweden)

    Maitê Alves Bezerra

    2014-06-01

    Full Text Available Ao observar a comunidade portuguesa que busca compreender a historicidade das formas e dos processos de escolarização por meio do estabelecimento de intenso diálogo com outras comunidades, é impossível não dar destaque à figura de António Manuel Seixas Nóvoa. Nascido em Lisboa no ano de 1954, aos 18 anos inicia o curso de Ciências da Educação na Universidade de Lisboa. Após lecionar em importantes universidades tais como Paris V, Oxford e Columbia University, atualmente acumula as posições de reitor da Universidade de Lisboa e professor catedrático da Faculdade de Psicologia e de Ciências da Educação na Instituição. Nóvoa tem se destacado à frente de debates internacionais a respeito da história da educação e educação comparada.

  6. In Conversation with: Professor Liz Thomas

    Directory of Open Access Journals (Sweden)

    Karen Nelson

    2012-08-01

    Full Text Available Editors Karen Nelson, John Clarke and Sally Kift interview Professor Liz Thomas,  Director of the Widening Participation Research Centre at Edge Hill University.  She is also Lead Adviser Retention and Success at the Higher Education Academy, England.   Professor Thomas was one of the keynote speakers at the 15th International First Year in Higher Education Conference held in Brisbane, Australia from the 26th – 29th of June, 2012.  Professor Thomas joined the Journal Editors at the conclusion of the main conference program to explore some of the key themes raised in her address.  

  7. On the Composition of Public-Coin Zero-Knowledge Protocols

    Science.gov (United States)

    2011-05-31

    only languages in BPP have public-coin black-box zero-knowledge protocols that are secure under an unbounded (polynomial) number of parallel...only languages in BPP have public-coin black-box zero-knowledge protocols that are secure under an unbounded (polynomial) number of parallel repetitions...and Krawczyk [GK96b] show that only languages in BPP have constant-round public-coin (stand-alone) black-box ZK protocols with negligible soundness

  8. Combined PIXE and XPS analysis on republican and imperial Roman coins

    International Nuclear Information System (INIS)

    Dacca, A.; Prati, P.; Zucchiatti, A.; Lucarelli, F.; Mando, P.A.; Gemme, G.; Parodi, R.; Pera, R.

    2000-01-01

    A combined PIXE and XPS analysis has been performed on a few Roman coins of the republican and imperial age. The purpose was to investigate via XPS the nature and extent of patina in order to be capable of extracting PIXE data relative to the coins bulk. The inclusion of elements from the surface layer, altered by oxidation and inclusion, is a known source of uncertainty in PIXE analyses of coins, performed to assess the composition and the provenance

  9. Turning university professors into competent learners

    NARCIS (Netherlands)

    Stefanova, Eliza; Ilieva, Miroslava; Nikolova, Nikolina; Stefanov, Krassen

    2008-01-01

    Stefanova, E., Ilieva, M., Nikolova, N, & Stefanov, K. (2008). Turning university professors into competent learners. In H. W. Sligte & R. Koper (Eds.), Proceedings of the 4th TENCompetence Open Workshop. Empowering Learners for Lifelong Competence Development: pedagogical, organisational and

  10. Lifelong learning: Science professors need leadership training

    OpenAIRE

    Leiserson, Charles E.; McVinney, Chuck

    2015-01-01

    Education does not stop. Professors must update and develop their technical skills throughout their careers. But as they progress, few take the time — or are offered the opportunity — to become educated in how to be an effective leader.

  11. The Ilac-Project Supporting Ancient Coin Classification by Means of Image Analysis

    Science.gov (United States)

    Kavelar, A.; Zambanini, S.; Kampel, M.; Vondrovec, K.; Siegl, K.

    2013-07-01

    This paper presents the ILAC project, which aims at the development of an automated image-based classification system for ancient Roman Republican coins. The benefits of such a system are manifold: operating at the suture between computer vision and numismatics, ILAC can reduce the day-to-day workload of numismatists by assisting them in classification tasks and providing a preselection of suitable coin classes. This is especially helpful for large coin hoard findings comprising several thousands of coins. Furthermore, this system could be implemented in an online platform for hobby numismatists, allowing them to access background information about their coin collection by simply uploading a photo of obverse and reverse for the coin of interest. ILAC explores different computer vision techniques and their combinations for the use of image-based coin recognition. Some of these methods, such as image matching, use the entire coin image in the classification process, while symbol or legend recognition exploit certain characteristics of the coin imagery. An overview of the methods explored so far and the respective experiments is given as well as an outlook on the next steps of the project.

  12. THE ILAC-PROJECT: SUPPORTING ANCIENT COIN CLASSIFICATION BY MEANS OF IMAGE ANALYSIS

    Directory of Open Access Journals (Sweden)

    A. Kavelar

    2013-07-01

    Full Text Available This paper presents the ILAC project, which aims at the development of an automated image-based classification system for ancient Roman Republican coins. The benefits of such a system are manifold: operating at the suture between computer vision and numismatics, ILAC can reduce the day-to-day workload of numismatists by assisting them in classification tasks and providing a preselection of suitable coin classes. This is especially helpful for large coin hoard findings comprising several thousands of coins. Furthermore, this system could be implemented in an online platform for hobby numismatists, allowing them to access background information about their coin collection by simply uploading a photo of obverse and reverse for the coin of interest. ILAC explores different computer vision techniques and their combinations for the use of image-based coin recognition. Some of these methods, such as image matching, use the entire coin image in the classification process, while symbol or legend recognition exploit certain characteristics of the coin imagery. An overview of the methods explored so far and the respective experiments is given as well as an outlook on the next steps of the project.

  13. The Digital Agenda of Virtual Currencies. Can BitCoin Become a Global Currency?

    OpenAIRE

    KANCS D'ARTIS; CIAIAN PAVEL; MIROSLAVA RAJCANIOVA

    2015-01-01

    This paper identifies and analyzes BitCoin features which may facilitate Bitcoin to become a global currency, as well as characteristics which may impede the use of BitCoin as a medium of exchange, a unit of account and a store of value, and compares BitCoin with standard currencies with respect to the main functions of money. Among all analyzed BitCoin features, the extreme price volatility stands out most clearly compared to standard currencies. In order to understand the reasons for such e...

  14. Professor dr hab. Anna Maria Bujakiewicz

    Directory of Open Access Journals (Sweden)

    Anna Kujawa

    2015-08-01

    Full Text Available The article presents the biography and scientific achievements of Professor Anna Bujakiewicz. After receiving her master’s degree and doctorate in biology and mycology from Adam Mickiewicz University in Poznań, Professor Bujakiewicz continued her exciting research and teaching on mycology at her Alma Mater Posnaniensis for more than 50 years. Her publications in this field include many books, articles, and other scholarly reports.

  15. A New Database of Digits Extracted from Coins with Hard-to-Segment Foreground for Optical Character Recognition Evaluation

    Directory of Open Access Journals (Sweden)

    Xingyu Pan

    2017-05-01

    Full Text Available Since the release date struck on a coin is important information of its monetary type, recognition of extracted digits may assist in identification of monetary types. However, digit images extracted from coins are challenging for conventional optical character recognition methods because the foreground of such digits has very often the same color as their background. In addition, other noises, including the wear of coin metal, make it more difficult to obtain a correct segmentation of the character shape. To address those challenges, this article presents the CoinNUMS database for automatic digit recognition. The database CoinNUMS, containing 3,006 digit images, is divided into three subsets. The first subset CoinNUMS_geni consists of 606 digit images manually cropped from high-resolution photographs of well-conserved coins from GENI coin photographs; the second subset CoinNUMS_pcgs_a consists of 1,200 digit images automatically extracted from a subset of the USA_Grading numismatic database containing coins in different quality; the last subset CoinNUMS_pcgs_m consists of 1,200 digit images manually extracted from the same coin photographs as CoinNUMS_pcgs_a. In CoinNUMS_pcgs_a and CoinNUMS_pcgs_m, the digit images are extracted from the release date. In CoinNUMS_geni, the digit images can come from the cropped date, the face value, or any other legends containing digits in the coin. To show the difficulty of these databases, we have tested recognition algorithms of the literature. The database and the results of the tested algorithms will be freely available on a dedicated website.1

  16. Characterization of ancient coins with the use of total reflection x-ray fluorescence spectrometry

    International Nuclear Information System (INIS)

    Ostachowicz, B.; Holynska, B.; Ostachowicz, J.; Haczewska, B.

    2000-01-01

    In this work the composition of silver coins from XI-XII centuries and a metal gorget from XVIII century have been studied. The beginnings of denarii (Sachsenpfennige) coinage might be linked with Saxony, whereas the end period of the production of those coins i.e. the last quarter of the XI th and beginning of the XII th centuries is connected also with Polish mints. The studied coins bearing the chivalric cross upon the reverse were minted by Wladyslaw Herman a Polish prince and his palatine Sieciech. Some of the coins were original ones, some other were forged, however the provenance of both types of coins was probably the same. The forged coins contained copper core covered with silver alloy. The TXRF module with molybdenum x-ray tube operated at 55 kV and 40 mA has been used for analysis of both types of coins. A quartz reflector was rubbed against a coin and then analyzed. Several metals were found and determined in the coins namely: zinc, copper, iron, lead and also trace concentrations of gold and mercury. A small piece of silver coin was also dissolved in nitric acid and a solution was analyzed by TXRF. The results showed good agreement with the data obtained by rubbing a coin. The gorget was made of gilded copper and decorated by paintings presenting a Holy Mary and Jesus Christ. The metal parts of the gorget was rubbed against quartz reflectors and analyzed. The concentration of major and minor elements in metal gives an important information for historian of art about technology of production and decoration of gorgets. The traces of mercury were found in the golden layer. This suggested that making Au-Hg amalgam followed by heating was used for covering a copper gorget with the layer of gold. (author)

  17. Imageology and clinical examination: Two sides of the same coin

    Directory of Open Access Journals (Sweden)

    Deepa Das

    2011-01-01

    Full Text Available The continuous and rapid transition of techniques from research lab into clinical practice has been the pattern of development in radiology and imaging, and this has put the concept of clinical imaging into a different perspective. From a passive role of pattern recognition, distinguishing a radiograph from normal to abnormal, the task of a radiologist today has been elevated to reporting a comprehensive clinical imaging assay, giving information at a level profound enough to be useful for scientists working in allied fields. A peep into the literature shows how radiological and clinical examination can be two sides of the same coin.

  18. Peace and development: two sides of the same coin?

    Directory of Open Access Journals (Sweden)

    Viveros Tafur, Memphis Ronald

    2015-07-01

    Full Text Available There is the notion that peace and development are positively correlated, that peace drives development and that development drives peace, for Galtung (1985: 147 Peace and Development should be regarded as two sides of the same coin and considers development in relation to peace. This paper shows that peace and development are uncorrelated in several countries where there is peace without development or development without peace. The use of quantitative models as a tool for the analysis is a plus for the findings because most of the related theories are qualitative.

  19. Accounting Professor Qualification in Digital Age: A Perception Study on Brazilian Professors

    Science.gov (United States)

    Vendruscolo, Maria Ivanice; Behar, Patrícia Alejandra

    2015-01-01

    This papers aims at analyzing the perception of Accounting professors about the necessary qualifications in Accounting undergraduate courses. The contribution of this study is to theoretically discuss the education of Accounting professors, with empirical data, because Accounting teaching requires specific competencies in the digital area. The…

  20. 77 FR 42365 - Price for the Making American History Coin and Currency Set

    Science.gov (United States)

    2012-07-18

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the Making American History Coin and... States Mint is announcing a price of $72.95 for the Making American History Coin and Currency Set. FOR FURTHER INFORMATION CONTACT: B.B. Craig, Associate Director for Sales and Marketing; United States Mint...

  1. The Weight of Euro Coins: Its Distribution Might Not Be as Normal as You Would Expect

    Science.gov (United States)

    Shkedy, Ziv; Aerts, Marc; Callaert, Herman

    2006-01-01

    Classical regression models, ANOVA models and linear mixed models are just three examples (out of many) in which the normal distribution of the response is an essential assumption of the model. In this paper we use a dataset of 2000 euro coins containing information (up to the milligram) about the weight of each coin, to illustrate that the…

  2. 77 FR 43662 - Price for the 2012 American Eagle Silver Proof Coin

    Science.gov (United States)

    2012-07-25

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the 2012 American Eagle Silver Proof Coin... is lowering the price of the 2012 American Eagle Silver Proof Coin. The product will now be offered for sale at a price of $54.95. FOR FURTHER INFORMATION CONTACT: B. B. Craig, Associate Director for...

  3. 77 FR 40704 - Price for the 2012 American Eagle Silver Uncirculated Coin

    Science.gov (United States)

    2012-07-10

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the 2012 American Eagle Silver... States Mint is announcing the price of the 2012 American Eagle Silver Uncirculated Coin. The coin will be offered for sale at a price of $45.95. FOR FURTHER INFORMATION CONTACT: B. B. Craig, Associate Director...

  4. 77 FR 54659 - Price for the 2012 Annual Uncirculated Dollar Coin Set

    Science.gov (United States)

    2012-09-05

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the 2012 Annual Uncirculated Dollar Coin Set AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing a price of $54.95 for the 2012 Annual Uncirculated Dollar Coin Set. This set...

  5. DMPD: Targeting bacterial endotoxin: two sides of a coin. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available n M. Ann N Y Acad Sci. 2007 Jan;1096:1-17. (.png) (.svg) (.html) (.csml) Show Targeting bacterial endotoxin: two sides of a coin. Pub...medID 17405910 Title Targeting bacterial endotoxin: two sides of a coin. Authors Bo

  6. 76 FR 65563 - Pricing for 2011 American Eagle Silver Proof and Uncirculated Coins

    Science.gov (United States)

    2011-10-21

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for 2011 American Eagle Silver Proof and Uncirculated Coins AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the re-pricing of the 2011 American Eagle Silver Proof and Uncirculated Coins...

  7. 78 FR 41195 - Re-pricing of Several Silver Coin Products

    Science.gov (United States)

    2013-07-09

    ... DEPARTMENT OF THE TREASURY United States Mint Re-pricing of Several Silver Coin Products AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: Because of the recent decrease in the market price of silver, the United States Mint is lowering the price of several silver coin...

  8. 78 FR 70414 - Pricing for the 2013 Coin and Chronicles Set-Theodore Roosevelt

    Science.gov (United States)

    2013-11-25

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2013 Coin and Chronicles Set--Theodore Roosevelt AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing a price of $57.95 for the 2013 Coin and Chronicles Set--Theodore...

  9. 77 FR 839 - Pricing for 2011 American Eagle Silver Uncirculated Coins

    Science.gov (United States)

    2012-01-06

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for 2011 American Eagle Silver Uncirculated Coins Agency: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the re-pricing of the 2011 American Eagle Silver Uncirculated Coins. The price of...

  10. 75 FR 17832 - Pricing for 2010 Lincoln One-Cent Coin Two-Roll Set

    Science.gov (United States)

    2010-04-07

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for 2010 Lincoln One-Cent Coin Two-Roll Set AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2010 Lincoln One-Cent Coin Two-Roll Set. The 2010 Lincoln One-Cent...

  11. 76 FR 67799 - Pricing for the American Eagle 25th Anniversary Silver Coin Set

    Science.gov (United States)

    2011-11-02

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the American Eagle 25th Anniversary Silver Coin Set AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the American Eagle 25th Anniversary Silver Coin Set. The...

  12. 78 FR 24816 - Pricing for the 2013 American Eagle West Point Two-Coin Silver Set

    Science.gov (United States)

    2013-04-26

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2013 American Eagle West Point Two-Coin Silver Set AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2013 American Eagle West Point Two-Coin Silver Set. The...

  13. 76 FR 53717 - Pricing for the 2011 American Eagle Silver Uncirculated Coin

    Science.gov (United States)

    2011-08-29

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2011 American Eagle Silver Uncirculated Coin AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the pricing of the 2011 American Eagle Silver Uncirculated Coin. The price of...

  14. The Ghanaian currency notes and coins: A medium of exchange for ...

    African Journals Online (AJOL)

    Yeasts were the dominant microorganisms on both banknotes and coins, followed by moulds and coliform bacteria were the least. The enteric bacteria isolated were of the lactose-fermenting (coliforms) and non lactose-fermenting types. The presence of coliforms on the banknotes and coins indicated faecal contamination ...

  15. 31 CFR 92.3 - Manufacture and sale of “proof” coins.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Manufacture and sale of âproofâ coins... MINT OPERATIONS AND PROCEDURES Numismatic Operations § 92.3 Manufacture and sale of “proof” coins... additional expense of their manufacture and sale. Their manufacture and issuance are contingent upon the...

  16. Satisfaction among accounting professors in Brazil

    Directory of Open Access Journals (Sweden)

    Tamires Sousa Araújo

    Full Text Available ABSTRACT The aim of this study was to identify the prevalence of satisfaction among accounting professors in Brazil throughout their careers. The research is classified as descriptive and used a quantitative approach to data analysis. 641 valid responses were obtained from professors from all regions of Brazil. The results show that a feeling of satisfaction prevails among accounting course professors, as most of them “like the profession” and, in general, "are satisfied with it”. It was found that levels of satisfaction are higher among individuals with more experience, in that in their first years in the job (one to three years, professors have lower satisfaction rates; the highest levels of satisfaction are found in the final stage (over 35 years. The main factor that influences satisfaction is personal fulfillment (teaching work and relationship with students. It was also possible to identify that positive feelings about teaching predominate (67.3% compared to negative ones (32.7%. These results show the need for greater attention to be paid in the early years of the career in order to avoid a "reality clash". They also show the need for other studies to investigate how the phases in the life cycle of accounting professors are characterized.

  17. Dr. Rudolph Binion: professor, mentor, psychohistorian.

    Science.gov (United States)

    Szaluta, Jacques

    2015-01-01

    As the title of my paper indicates, Dr. Rudolph Binion was my professor, mentor, and a leading psychohistorian. My paper in memoriam to Rudolph Binion is intended as both a retrospective and an introspective account of my relationship with him, as he had a pivotal influence on me when he was my professor at Columbia University. His help and influence continued after I left graduate school. In my paper I also deal with the enormous stresses of navigating through graduate school, for those students whose goal was to earn the Ph.D. degree. Some examinations were dreaded, For Example The "Examination in Subjects," popularly called the "Oral Exam." The "incubation" period was long indeed, frequently averaging nearly ten years, and it was an ordeal, as the rate of attrition was very high. There is then also the question of "ego strength" and that of "transference" toward the professor. Graduate school is indeed a long and strenuous challenge. I took a seminar in modern French history, a requirement for the Master's degree with Professor Binion, which was consequential for me, as he taught me to be objective in writing history. Professor Binion was a demanding and outstanding teacher.

  18. The housekeeper and the professor a novel

    CERN Document Server

    Ogawa, Yoko

    2010-01-01

    He is a brilliant math Professor with a peculiar problem—ever since a traumatic head injury, he has lived with only eighty minutes of short-term memory. She is an astute young Housekeeper—with a ten-year-old son—who is hired to care for the Professor. And every morning, as the Professor and the Housekeeper are introduced to each other anew, a strange and beautiful relationship blossoms between them. Though he cannot hold memories for long (his brain is like a tape that begins to erase itself every eighty minutes), the Professor's mind is still alive with elegant equations from the past. And the numbers, in all of their articulate order, reveal a sheltering and poetic world to both the Housekeeper and her young son. The Professor is capable of discovering connections between the simplest of quantities—like the Housekeeper's shoe size—and the universe at large, drawing their lives ever closer and more profoundly together, even as his memory slips away. Yoko Ogawa's The Housekeeper and the Professo...

  19. Effects of gastric acid on euro coins: chemical reaction and radiographic appearance after ingestion by infants and children

    Science.gov (United States)

    Puig, S; Scharitzer, M; Cengiz, K; Jetzinger, E; Rupprecht, L

    2004-01-01

    Objectives: This study investigated whether coins of the new European currency (€) corrode when they are exposed to gastric acid, and whether this change can be detected radiographically. Methods: The eight different denominations of € coins were immersed for seven days in 0.15 N hydrochloride acid (HCl), which corresponds to the level of post-prandial gastric acid. A Swedish crown coin and three different Austrian schilling coins were used as controls. The coins were weighed and radiographed daily to evaluate visible corrosions and HCl was analysed daily for possible dissolved substances. Results: All coins lost weight within 24 hours after exposure to HCl. The 1, 2, and 5 € cent coins developed changes that were visible on radiographs. The weights of all coins decreased by 0.43% to 11.30% during one week. The dissolved substances measured in the HCl corresponded to the different metals and alloys of the coins, except for copper, which does not dissolve in HCl. The highest absolute weight loss was observed in the Swedish crown coin (0.67 g), and the highest relative weight loss in the 1 Austrian schilling coin (11.30%). The two € coins that showed the highest absolute and relative weight losses were the 2 € (0.54 g or 6.35%) and the 1 € (0.48 g or 6.39%) coin. Conclusions: A higher rate of toxicity for the new European coins compared with coins of other currencies is not expected, unless a massive coin ingestion occurs. PMID:15333527

  20. Quantum quincunx for walk on circles in phase space with indirect coin flip

    International Nuclear Information System (INIS)

    Xue Peng; Sanders, Barry C

    2008-01-01

    The quincunx, or Galton board, has a long history as a tool for demonstrating and investigating random walk processes, but a quantum quincunx (QQ) for demonstrating a coined quantum walk (QW) is yet to be realized experimentally. We propose a variant of the QQ in cavity quantum electrodynamics, designed to eliminate the onerous requirement of directly flipping the coin. Instead, we propose driving the cavity in such a way that cavity field displacements are minimized and the coin is effectively flipped via this indirect process. An effect of this indirect flipping is that the walker's location is no longer confined to a single circle in the planar phase space, but we show that the phase distribution nonetheless shows quadratic enhancement of phase diffusion for the quantum versus classical walk despite this small complication. Thus our scheme leads to coined QW behaviour in cavity quantum electrodynamics without the need to flip the coin directly

  1. Serial composition of quantum coin flipping and bounds on cheat detection for bit commitment

    International Nuclear Information System (INIS)

    Mochon, Carlos

    2004-01-01

    Quantum protocols for coin flipping can be composed in series in such a way that a cheating party gains no extra advantage from using entanglement between different rounds. This composition principle applies to coin-flipping protocols with cheat sensitivity as well, and is used to derive two results: There are no quantum strong coin-flipping protocols with cheat sensitivity that is linear in the bias (or bit-commitment protocols with linear cheat detection) because these can be composed to produce strong coin flipping with arbitrarily small bias. On the other hand, it appears that quadratic cheat detection cannot be composed in series to obtain even weak coin flipping with arbitrarily small bias

  2. Compositional study of IIIrd century BC silver coins from Kreshpan hoard (Albania) using EDXRF spectrometry

    International Nuclear Information System (INIS)

    Civici, N.; Gjongecaj, Sh.; Stamati, F.; Dilo, T.; Pavlidou, E.; Polychroniadis, E.K.; Smit, Z.

    2007-01-01

    The elemental composition of 122 silver coins from a hoard of the 3rd century BC, minted by the Illyrian king Monounios and the ancient cities of Dyrrachion and Korkyra was determined by EDXRF. The results showed that the different groups of coins were made of a similar Ag-Cu alloy with Ag concentration in the range 94-98%. The examination of the contents of minor elements Pb, Au and Bi showed that the coins minted by the Illyrian king Monounios have similar composition with the largest part of Dyrrachion coins and those from Korkyra. On the other side, two subgroups containing different amounts of Au and Bi can be observed within the general group of coins minted in Dyrrachion

  3. The Formation of COINS: Equity and Inclusion in SDSS

    Science.gov (United States)

    Schmidt, Sarah J.; Sanchez-Gallego, Jose Ramon; Chanover, Nancy J.; Holley-Bockelmann, Kelly; Lucatello, Sara; Aragon-Salamanca, Alfonso; Belfiore, Francesco; Cherinka, Brian; Feuillet, Diane; Jones, Amy; Masters, Karen; Simmons, Audrey; Ross, Ashley; Stassun, Keivan G.; Tayar, Jamie

    2017-01-01

    In the era of large surveys, collaborations like the Sloan Digital Sky Survey (SDSS) are becoming a new normal for many scientists, and collaboration policies and climate have a considerable affect on scientific careers. As such, it is essential that collaborations actively strive to include all scientists regardless of gender, gender identity, race, ethnicity, sexual orientation, disability, career stage, geographic location, economic background, social and cultural backgrounds, and all possible intersections thereof. We report on the formation and progress of the Committee On INclusiveness in the SDSS (COINS). COINS was formed to assess the SDSS-IV project and collaboration's climate and demographics, to recommend new policies or practices with regard to increasing inclusiveness, and to assist in the implementation of these new activities where necessary. We report on our current activities, which include ongoing support for the SDSS Research Experience for Undergraduates program, support for the SDSS Faculty and Student Teams initiative, administering and analyzing the SDSS demographic surveys, working towards collaboration meeting inclusiveness and accessibility, and adopting strategies for integrating and mentoring new members. We welcome input from SDSS members and non-members about how to work towards a more equitable and inclusive collaboration.

  4. ENSAIO: HOMENAGEM AO PROFESSOR REINIER ROZESTRATEN

    Directory of Open Access Journals (Sweden)

    Antonio C. R. Tupinambá

    2014-02-01

    Full Text Available Trata-se de uma homenagem póstuma ao Professor Doutor Reinier Rozestraten. O texto apresenta, suscintamente, o percurso acadêmico do nomeado professor, em especial a sua passagem pela Psicologia do Trânsito. Paralelamente discorre sobre sua principal obra na área, que, de certo modo introduz o discurso psicológico sobre o comportamento de trânsito em perspectiva nacional, juntamente com sua preocupação em imprimir um caráter científico ao tema e introduzi-lo no contexto da academia e na sociedade em perspectivas teórica e prática. A obra escolhida é considerada um marco para o estabelecimento teórico da disciplina da psicologia do trânsito no Brasil. A homenagem foi originalmente escrita por ocasião dos cinco anos de falecimento do professor Reinier.

  5. Ancient bronze coins from Mediterranean basin: LAMQS potentiality for lead isotopes comparative analysis with former mineral

    Energy Technology Data Exchange (ETDEWEB)

    Torrisi, L., E-mail: Lorenzo.Torrisi@unime.it [Department of Physics Science - MIFT, Messina University, V.le F.S. d’Alcontres 31, 98166 S. Agata, Messina (Italy); Italiano, A. [INFN, Sezione di Catania, Gruppo collegato di Messina (Italy); Torrisi, A. [Institute of Optoelectronics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw (Poland)

    2016-11-30

    Highlights: • Surface and bulk compositional elements in ancient bronze coins were investigated using XRF analysis. • Lead stable isotope {sup 204}Pb, {sup 206}Pb, {sup 207}Pb and {sup 208}Pb were measured in ancient coins with LAMQS analysis. • Lead ratios {sup 208}Pb/{sup 206}Pb and {sup 207}Pb/{sup 206}Pb, measured by LAMQS, were compared with Brettscaife.net geological database relative to the minerals in different mines of Mediterranean basin. • Bronze coins were correlated to possible ancient mining sites of minerals from which lead was extracted. - Abstract: Bronze coins coming from the area of the Mediterranean basin, dated back the II–X Cent. A.D., were analyzed using different physical analytical techniques. Characteristic X-ray fluorescence was used with electrons and photons, in order to investigate the elemental composition of both the surface layers and bulk. Moreover, the quadrupole mass spectrometry coupled to laser ablation (LAMQS technique) in high vacuum was used to analyse typical material compounds from surface contamination. Mass spectrometry, at high resolution and sensitivity, extended up to 300 amu, allowed measuring the {sup 208}Pb/{sup 206}Pb and {sup 207}Pb/{sup 206}Pb isotopic ratios into the coins. Quantitative relative analyses of these isotopic ratios identify the coin composition such as a “fingerprint” depending on the mineral used to extract the lead. Isotopic ratios in coins can be compared to those of the possible minerals used to produce the bronze alloy. A comparison between the measured isotope ratios in the analyzed coins and the literature database, related to the mineral containing Pb as a function of its geological and geophysical extraction mine, is presented. The analysis, restricted to old coins and the mines of the Mediterranean basin, indicates a possible correlation between the coin compositions and the possible geological sites of the extracted mineral.

  6. Illustrated & Dissected: Professor Richard Sawdon Smith.

    Science.gov (United States)

    2015-06-01

    This Alternative Gallery feature introduces the photographic artist Professor Richard Sawdon Smith. Professor Sawdon Smith's work stems around a fascination with representations of anatomy that have been fuelled by his experience as a hospital patient. The work has allowed him to explore ideas through the use of medical illustrations which include early anatomical drawings, personal medical photography and facial modelling. The work highlights how such imagery can be used in the context of a patient seeking understanding and acceptance of ill health and disease using the body as a canvas on which to translate the experience.

  7. Kai Adolf Jensen, professor i almindelig patologi

    DEFF Research Database (Denmark)

    Høiby, Niels

    2016-01-01

    for the Bacillus Calmette-Guérin vaccine production and supervised many young scientists’ doctoral theses on the aspects of tuberculosis. He became internationally recognized, and he revealed an important scientific fraud in the laboratory of the Austrian professor Ernst Löwenstein (1878-1950), who claimed that he...... could detect M. tuberculosis in blood cultures as a cause of a multitude of diseases. He was a pioneer in eradication of bovine tuberculosis in Denmark which became the first country in the world where this happened. Kai Adolf Jensen held the position as professor of general pathology from 1940 to 1965...

  8. Professor Stewart's casebook of mathematical mysteries

    CERN Document Server

    Stewart, Ian

    2014-01-01

    Like its wildly popular predecessors Cabinet of Mathematical Curiosities and Hoard of Mathematical Treasures, Professor Stewart's brand-new book is a miscellany of over 150 mathematical curios and conundrums, packed with trademark humour and numerous illustrations. In addition to the fascinating formulae and thrilling theorems familiar to Professor Stewart's fans, the Casebook follows the adventures of the not-so-great detective Hemlock Soames and his sidekick Dr John Watsup (immortalised in the phrase 'Watsup, Doc?'). By a remarkable coincidence they live at 222B Baker Street, just a

  9. Professor: Danmarkskanon skal give plads til mangfoldighed

    DEFF Research Database (Denmark)

    Schmidt, Garbi

    2016-01-01

    DEBAT: Danmark har igennem størstedelen af sin historie været et flerkulturelt land. Vi kan derfor ikke diskutere danske værdier til en Danmarkskanon uden at kaste et blik på globale strømninger og vores mangfoldige fortid, skriver Garbi Schmidt, professor ved RUC......DEBAT: Danmark har igennem størstedelen af sin historie været et flerkulturelt land. Vi kan derfor ikke diskutere danske værdier til en Danmarkskanon uden at kaste et blik på globale strømninger og vores mangfoldige fortid, skriver Garbi Schmidt, professor ved RUC...

  10. Final Comments from Professors George and Beane.

    Science.gov (United States)

    Beane, James; George, Paul S.

    1996-01-01

    Concludes this journal focus section on curriculum integration with transcripts of questions asked by conference attendees and answers by Professors Beane and George. Areas addressed included experience levels with children and teachers, studies that point to the failure of curriculum integration, and how teachers can continue curriculum…

  11. Professor Jacques Cortes prantsuse keele lektoraadis

    Index Scriptorium Estoniae

    2000-01-01

    Juuni alguses külastas filoloogiateaduskonna romaani-germaani filoloogia osakonda Roueni ülikooli professor Jacques Cortes (Prantsusmaa). Ta korraldas 4. õa üliõpilastele prantsuse keele intensiivkursuse ja võttis vastu eksami ning kohtus prantsuse keele lektoraadi õppejõududega : [täistekst

  12. Russel Nye: The Professor in Public Life.

    Science.gov (United States)

    Hungiville, Maurice

    1995-01-01

    A discussion of the influence of Russel Nye, a college English professor at Michigan State University and journalist, focuses on the values that shaped his teaching, scholarship, and writing and his defense of democratic values, especially in education. It is concluded that Nye's experience suggests that public service can be a source of personal…

  13. Interview met professor Joan Wallach Scott

    NARCIS (Netherlands)

    Bijl, Greetje; Tijhoff, Esmeralda

    2012-01-01

    Joan Scott, professor at the School of Social Science in the Institute for Avanced Study in Princeton, New Jersey (USA), was the keynote speaker at the conference 'Uitsluitend emancipatie' in de Beurs van Berlage in Amsterdam in October 2012. An interview on gender, history, feminism and her book

  14. String theorist takes over as Lucasian Professor

    Science.gov (United States)

    Banks, Michael

    2009-11-01

    String theorist Michael Green will be the next Lucasian Professor of Mathematics at Cambridge University. Green, 63, will succeed Stephen Hawking, who held the chair from 1980 before retiring last month at the age of 67 and taking up a distinguished research chair at the Perimeter Institute for Theoretical Physics in Canada (see above).

  15. Professor Brand Advocacy: Do Brand Relationships Matter?

    Science.gov (United States)

    Jillapalli, Ravi K.; Wilcox, James B.

    2010-01-01

    The trend among students to advocate their professors online continues to generate interest within marketing academia. Brand advocacy in products and services has played a vital role in marketing. However, no known research to date has embraced the idea of brand advocacy in marketing education. This research builds on the recent human brand…

  16. CFA or CFP: A Guide for Professors

    Science.gov (United States)

    Moy, Ronald L.

    2011-01-01

    The CFA Institute and the CFP Board of Standards provide professional certifications in the field of finance. In this paper, I provide my experience with the CFA and CFP programs in order to give other professors some insight into the process of attaining the designations. I hope to provide answers to some of the questions that other faculty…

  17. Reflections of a Latino Associate Professor

    Science.gov (United States)

    Peguero, Anthony A.

    2018-01-01

    The following reflection essay is about my experiences as a Latino Associate Professor who focuses on criminology, youth violence, juvenile justice, and the associated disparities with race, ethnicity, and immigration. I reflect about the "race and justice" job market, pursuing and establishing a Latina/o Criminology working group, often…

  18. Leisure and the Retired Professor: Occupation Matters

    Science.gov (United States)

    Dorfman, Lorraine; Kolarik, Douglas

    2005-01-01

    Little attention has been given to the leisure activities of retired professors, whose activity patterns in retirement may be different from those of other occupational groups because of their lifetime commitment to work. This interview study uses both quantitative and qualitative data to investigate: (a) the leisure and professional activities of…

  19. Ion beam analysis and AMS dating of the silver coin hoard of Preuschdorf (Alsace, France)

    Science.gov (United States)

    Beck, Lucile; Alloin, Elise; Vigneron, Anaïs; Caffy, Ingrid; Klein, Ulrich

    2017-09-01

    The hoard of Preuschdorf is a monetary deposit discovered in Alsace (France) in 2005. This find was composed of 7327 silver-copper coins. They seem to have been struck over more than one century, between the end of the 15th and the beginning of the 17th century. This hoard is an exceptional find composed of a large quantity of coins from various periods, areas and contexts. It is also remarkable by the presence of counterfeit coins. IBA was used to analyze the silver content of the official coins by combining PIXE and RBS. The fineness was found to be between 20 and 42% according to the mint place and an unexpected subdivision of the values has been revealed. For the counterfeit coins, the analyses were able to bring to light different elaboration processes: amalgam silvering with two various contents of mercury and application of a thin layer of pure silver. Finally, linen fibers attached to the coins have been dated by AMS radiocarbon dating. The radiocarbon calibrated dates perfectly match with the chronological range given by the coins.

  20. Neutrophils in Cancer: Two Sides of the Same Coin.

    Science.gov (United States)

    Uribe-Querol, Eileen; Rosales, Carlos

    2015-01-01

    Neutrophils are the most abundant leukocytes in blood and are considered to be the first line of defense during inflammation and infections. In addition, neutrophils are also found infiltrating many types of tumors. Tumor-associated neutrophils (TANs) have relevant roles in malignant disease. Indeed neutrophils may be potent antitumor effector cells. However, increasing clinical evidence shows TANs correlate with poor prognosis. The tumor microenvironment controls neutrophil recruitment and in turn TANs help tumor progression. Hence, TANs can be beneficial or detrimental to the host. It is the purpose of this review to highlight these two sides of the neutrophil coin in cancer and to describe recent studies that provide some light on the mechanisms for neutrophil recruitment to the tumor, for neutrophils supporting tumor progression, and for neutrophil activation to enhance their antitumor functions.

  1. Genetic testing in the workplace: the employer's coin toss.

    Science.gov (United States)

    French, Samantha

    2002-09-05

    A toss of the coin by the modern-day employer reveals two options regarding genetic testing in the workplace. The employer may choose to take advantage of increasingly precise, available, and affordable genetic testing in order to ascertain the genetic characteristics--and deficiencies--of its employees. This outcome exposes the employer to a vast array of potential litigation and liability relating to the Americans with Disabilities Act, the Fourth Amendment, Title VII of the Civil Rights Act, and state legislation designed to protect genetic privacy. Alternatively, the employer may neglect to indulge in this trend of genetic testing and may face liability for employer negligence, violations of federal legislation such as OSHA regulations, and increased costs associated with insuring the health of genetically endangered employees. In the rapidly developing universe of genetic intelligence, the employer is faced with a staggering dilemma.

  2. Proposal for founding mistrustful quantum cryptography on coin tossing

    International Nuclear Information System (INIS)

    Kent, Adrian

    2003-01-01

    A significant branch of classical cryptography deals with the problems which arise when mistrustful parties need to generate, process, or exchange information. As Kilian showed a while ago, mistrustful classical cryptography can be founded on a single protocol, oblivious transfer, from which general secure multiparty computations can be built. The scope of mistrustful quantum cryptography is limited by no-go theorems, which rule out, inter alia, unconditionally secure quantum protocols for oblivious transfer or general secure two-party computations. These theorems apply even to protocols which take relativistic signaling constraints into account. The best that can be hoped for, in general, are quantum protocols which are computationally secure against quantum attack. Here a method is described for building a classically certified bit commitment, and hence every other mistrustful cryptographic task, from a secure coin-tossing protocol. No security proof is attempted, but reasons are sketched why these protocols might resist quantum computational attack

  3. Solving simple stochastic games with few coin toss positions

    DEFF Research Database (Denmark)

    Ibsen-Jensen, Rasmus; Miltersen, Peter Bro

    2011-01-01

    Gimbert and Horn gave an algorithm for solving simple stochastic games with running time O(r! n) where n is the number of positions of the simple stochastic game and r is the number of its coin toss positions. Chatterjee et al. pointed out that a variant of strategy iteration can be implemented...... to solve this problem in time 4^r r^{O(1)} n^{O(1)}. In this paper, we show that an algorithm combining value iteration with retrograde analysis achieves a time bound of O(r 2^r (r log r + n)), thus improving both time bounds. While the algorithm is simple, the analysis leading to this time bound...

  4. Solving Simple Stochastic Games with Few Coin Toss Positions

    DEFF Research Database (Denmark)

    Ibsen-Jensen, Rasmus; Miltersen, Peter Bro

    2012-01-01

    Gimbert and Horn gave an algorithm for solving simple stochastic games with running time O(r! n) where n is the number of positions of the simple stochastic game and r is the number of its coin toss positions. Chatterjee et al. pointed out that a variant of strategy iteration can be implemented...... to solve this problem in time 4 r n O(1). In this paper, we show that an algorithm combining value iteration with retrograde analysis achieves a time bound of O(r 2 r (r logr + n)), thus improving both time bounds. We also improve the analysis of Chatterjee et al. and show that their algorithm in fact has...

  5. Neutrophils in Cancer: Two Sides of the Same Coin

    Directory of Open Access Journals (Sweden)

    Eileen Uribe-Querol

    2015-01-01

    Full Text Available Neutrophils are the most abundant leukocytes in blood and are considered to be the first line of defense during inflammation and infections. In addition, neutrophils are also found infiltrating many types of tumors. Tumor-associated neutrophils (TANs have relevant roles in malignant disease. Indeed neutrophils may be potent antitumor effector cells. However, increasing clinical evidence shows TANs correlate with poor prognosis. The tumor microenvironment controls neutrophil recruitment and in turn TANs help tumor progression. Hence, TANs can be beneficial or detrimental to the host. It is the purpose of this review to highlight these two sides of the neutrophil coin in cancer and to describe recent studies that provide some light on the mechanisms for neutrophil recruitment to the tumor, for neutrophils supporting tumor progression, and for neutrophil activation to enhance their antitumor functions.

  6. Rotation-invariant neural pattern recognition system with application to coin recognition.

    Science.gov (United States)

    Fukumi, M; Omatu, S; Takeda, F; Kosaka, T

    1992-01-01

    In pattern recognition, it is often necessary to deal with problems to classify a transformed pattern. A neural pattern recognition system which is insensitive to rotation of input pattern by various degrees is proposed. The system consists of a fixed invariance network with many slabs and a trainable multilayered network. The system was used in a rotation-invariant coin recognition problem to distinguish between a 500 yen coin and a 500 won coin. The results show that the approach works well for variable rotation pattern recognition.

  7. The Conservation of Early Post-Medieval Period Coins Found in Estonia

    Directory of Open Access Journals (Sweden)

    Aive Viljus

    2013-02-01

    Full Text Available This article deals with archaeological find material with a low silver content and the problems of conserving such material. The aim of the research was to find the most suitable method for the conservation of poorly preserved early post-medieval period coins with varying composition. For this, first, the composition of both the metal and the corrosion products of the archaeological coins were analysed, after which comparative experiments of different cleaning methods were carried out in order to find out the least harmful and most efficient method. A test was also performed to determine the necessity and efficiency of stabilizing the surface of the coins after cleaning.

  8. Categorization of Quantum Mechanics Problems by Professors and Students

    Science.gov (United States)

    Lin, Shih-Yin; Singh, Chandralekha

    2010-01-01

    We discuss the categorization of 20 quantum mechanics problems by physics professors and undergraduate students from two honours-level quantum mechanics courses. Professors and students were asked to categorize the problems based upon similarity of solution. We also had individual discussions with professors who categorized the problems. Faculty…

  9. 22 CFR 62.20 - Professors and research scholars.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Professors and research scholars. 62.20 Section... Specific Program Provisions § 62.20 Professors and research scholars. (a) Introduction. These regulations govern Exchange Visitor Program participants in the categories of professor and research scholar, except...

  10. Variables That Can Affect Student Ratings of Their Professors

    Science.gov (United States)

    Gotlieb, Jerry

    2013-01-01

    Attribution theory was applied to help predict the results of an experiment that examined the effects of three independent variables on students' ratings of their professors. The dependent variables were students' perceptions of whether the professor caused the students' grades and student satisfaction with their professor. The results suggest…

  11. E-Mail from Professor Enhances Student Motivation and Attitudes

    Science.gov (United States)

    Legg, Angela M.; Wilson, Janie H.

    2009-01-01

    Traditionally, professors use the first day of class to build rapport. However, current technology allows professors to contact students prior to the first day of class. This study assessed how the receipt of a welcoming e-mail from a female professor 1 week before the first day of class affected student motivation and attitudes toward the…

  12. Schismogenesis and schismogenetic processes: Gregory Bateson reconsidered

    DEFF Research Database (Denmark)

    Thomassen, Bjørn

    2010-01-01

    The main point I argue here is that Bateson’s concept of schismogenesis is indeed a useful concept cutting across the social sciences that uniquely relates to both social and personal pathologies. I briefly introduce Bateson’s notion of schismogenesis and even more briefly situate it with respect...... to Bateson’s work and the larger context in which he developed this concept. I further discuss how the application of schismogenesis within the field of politics has been somewhat neglected; I will here indicate some ways in which the concept is indeed useful for the analysis of politics/ political conflict....

  13. Gregory Bateson's relevance to current molecular biology

    DEFF Research Database (Denmark)

    Bruni, Luis Emilio

    2008-01-01

    in a developmental pathway. Being a central figure in the development of cybernetic theory he collaborated with a range of researchers from the life sciences who were innovating their own disciplines by introducing cybernetic concepts in their particular fields and disciplines. In the light of this, it should...... not come as a surprise today to realize how the general ideas that he was postulating for the study of communication systems in biology fit so well with the astonishing findings of current molecular biology, for example in the field of cellular signal transduction networks. I guess this is the case due...

  14. From Thing to Relation: Gregory Bateson's Bioanthropology

    DEFF Research Database (Denmark)

    Hoffmeyer, Jesper

    2008-01-01

    of disturbance. From a Batesonean view the roots of these lacunae are to be found in fundamental epistemological errors in the preferred schemes of conceptualizations in western culture – a never decently surmounted dualism one might perhaps say. One central point here is the persistent reification of relation...

  15. 37 CFR 254.2 - Definition of coin-operated phonorecord player.

    Science.gov (United States)

    2010-07-01

    ...-OPERATED PHONORECORD PLAYERS § 254.2 Definition of coin-operated phonorecord player. As used in this part..., currency, tokens, or other monetary units or their equivalent; (b) Is located in an establishment making no...

  16. 75 FR 4451 - Notification of United States Mint 2010 Commemorative Coin Pricing

    Science.gov (United States)

    2010-01-27

    ... Dollar and the 2010 Boy Scouts of America Centennial Silver Dollar Programs. Public Laws 110-227 and 110... Scouts of America Centennial Silver Dollar Commemorative Coins, respectively. [[Page 4452

  17. 48 CFR 37.116-1 - Presidential $1 Coin Act of 2005.

    Science.gov (United States)

    2010-10-01

    ... those vending machines that do not receive currency denominations greater than $1. [72 FR 46362, Aug. 17... (31 U.S.C. 5112(p)(1)), which seeks to remove barriers to the circulation of $1 coins. Section 104...

  18. Absolute determination of copper and silver in ancient coins using 14 MeV neutrons

    Science.gov (United States)

    Chalouhi, Ch.; Hourani, E.; Loos, R.; Melki, S.

    1982-09-01

    A method for absolute determination of copper and silver in ancient coins is described. Activation analysis by 14 MeV neutrons is performed. In the experimental procedure emphasis is placed on corrections for neutrons and gamma attenuation. In the analytical procedure, a multi linear-regression calculation is used to separate different contributions to the 511 keV gamma peak. The precision in the absolute determination of Cu and Ag is better than 2% in recent coins of definite shapes, whereas it is a somewhat lower in ancient coins of irregular shapes. The method was applied to ancient coins provided by the Museum of the American University of Beirut. Overall consistency and suitability of the method were obtained.

  19. Absolute determination of copper and silver in ancient coins using 14 MeV neutrons

    International Nuclear Information System (INIS)

    Chalouhi, C.; Hourani, E.; Loos, R.; Melki, S.

    1982-01-01

    A method for absolute determination of copper and silver in ancient coins is described. Activation analysis by 14 MeV neutrons is performed. In the experimental procedure emphasis is placed on corrections for neutrons and gamma attenuation. In the analytical procedure, a multi linear-regression calculation is used to separate different contributions to the 511 keV gamma peak. The precision in the absolute determination of Cu and Ag is better than 2% in recent coins of definite shapes, whereas it is a somewhat lower in ancient coins of irregular shapes. The method was applied to ancient coins provided by the Museum of the American University of Beirut. Overall consistency and suitability of the method were obtained. (orig.)

  20. Absolute determination of copper and silver in ancient coins using 14 MeV neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Chalouhi, C.; Hourani, E.; Loos, R.; Melki, S. (Faculty of Science, Beirut (Lebanon))

    1982-09-15

    A method for absolute determination of copper and silver in ancient coins is described. Activation analysis by 14 MeV neutrons is performed. In the experimental procedure emphasis is placed on corrections for neutrons and gamma attenuation. In the analytical procedure, a multi linear-regression calculation is used to separate different contributions to the 511 keV gamma peak. The precision in the absolute determination of Cu and Ag is better than 2% in recent coins of definite shapes, whereas it is a somewhat lower in ancient coins of irregular shapes. The method was applied to ancient coins provided by the Museum of the American University of Beirut. Overall consistency and suitability of the method were obtained.

  1. [Professor WU Zhongchao's experience of penetration needling].

    Science.gov (United States)

    Zhang, Ning; Wang, Bing; Zhou, Yu

    2016-08-12

    Professor WU Zhongchao has unique application of penetration needling in clinical treatment. Professor WU applies penetration needling along meridians, and the methods of penetration needling include self-meridian penetration, exterior-interior meridian penetration, identical-name meridian penetration, different meridian penetration. The meridian differentiation is performed according to different TCM syndromes, locations and natures of diseases and acupoint nature, so as to make a comprehensive assessment. The qi movement during acupuncture is focused. In addition, attention is paid on anatomy and long-needle penetration; the sequence and direction of acupuncture is essential, and the reinforcing and reducing methods have great originality, presented with holding, waiting, pressing and vibrating. Based on classical acupoint, the acupoint of penetration needling is flexible, forming unique combination of acupoints.

  2. Professor Andrzej Nespiak (1921-1981

    Directory of Open Access Journals (Sweden)

    Tomasz Majewski

    2014-08-01

    Full Text Available The biography of a professor of the Laboratory of Pharmaceutical Botany of the Medical Academy in Wrocław, who was formerly an investigator of the Agricultural Academy in Wrocław. He worked on mycorhiza, the participation of Macromycetes in forest communities and the use of fungi for synthesis of some organic compounds, he was also the author of the Polish flora of the genus Cortinarius (1975,1981 and Inocybe (manuscript.

  3. Professor Andrzej Nespiak (1921-1981)

    OpenAIRE

    Tomasz Majewski

    2014-01-01

    The biography of a professor of the Laboratory of Pharmaceutical Botany of the Medical Academy in Wrocław, who was formerly an investigator of the Agricultural Academy in Wrocław. He worked on mycorhiza, the participation of Macromycetes in forest communities and the use of fungi for synthesis of some organic compounds, he was also the author of the Polish flora of the genus Cortinarius (1975,1981) and Inocybe (manuscript).

  4. [Homage to Professor Dr. Nicasio Etchepareborda].

    Science.gov (United States)

    1998-11-01

    During a solemn academic act, de Main Classroom of the Facultad de Odontologia de Buenos Aires was named after Prof. Dr. Nicasio Etchepareborda. He has been the first professor at the Escuela de Odontologia and its organizer, after having obtained his Dentistry degree at the Dental School of Paris, in 1882. The new school was founded in 1891, and its activities began the following year.

  5. 31 July 2014 - Professor M. Kastner

    CERN Multimedia

    Egli, Laurent

    2014-01-01

    MIT Faculty Member Donner Professor of Physics Massachusetts Institute of Technology United States of America, Prof. M. Kastner visiting the LHC tunnel at Point 5 with Beams Department M. Solfaroli Camillocci, LHC superconducting magnet assembly hall visit with L. Rossi and R. Principe, LHC Computing Grid Project presentation and computer centre visit with I. Bird and signing the guest book with CERN Director-General R. Heuer.

  6. A practical study for Treatment and Conservation a group of Silver Coins from Dhamar Regional Museum, Dhamar, Yemen.

    Directory of Open Access Journals (Sweden)

    Mohamed M. Megahed

    2014-04-01

    Full Text Available A big group of silver coins{35 coins} was discovered in Banawa excavation , Dhamar , season 2002, and now it is situated in Dhamar Regional Museum ,Yemen. They were covered with a thin grey and black corrosion layers that disfigured them and hid their figures and inscriptions , also Some coins miss parts and others lost their circular.The aims of this work are identified the metallic composition of the coins , investigate the nature of corrosion grown during the long-term burial and identify its products that will help us to understand the corrosive factors and the degradation mechanisms , cleaning the group of coins from the superficial dirt and the corrosion products in order to discover as much as possible the surface topography, and to reveal the surfaces details , finally to establish them against further deterioration .To achieve that samples from the coins were examined by Metallographic Microscope {ME} , Scanning Electron Microscope {SEM}, the corrosion products were analyzed by X-ray diffraction{XRD} , and X-ray fluorescence { XRF} was used to determine the coins metallic constituents. Chemical cleaning was chosen for treating the coins and they were isolated to preserve them against further attack. After treatment and conservation, the coins figures and inscriptions that could be identified showed that this group of coins dates back to Umayyad period , exactly the reign of caliph Abd al-Malik ibn Marwan{ 65- 86 A.H}{685-705A.D} and his descendants till 106 A.H. 

  7. Work process of nursing professors 1

    Science.gov (United States)

    Parra Giordano, Denisse; Felli, Vanda Elisa Andres

    2017-01-01

    ABSTRACT Objective: to analyze the work process of nursing professors. Method: descriptive, exploratory and qualitative study, developed with a focus on critical epidemiology, carried out at a School of Nursing in Chile. The research subjects consist of 17 nursing professors, with whom individual semi-structured interviews were carried out and nine participated in a focus group. The Ethics Committee approved this study. Results: 88.2% were female, mean age of 42 years, 47% were married, 94% were Chilean, average length of service in the institution of 2.8 years, and 23.5% had a master’s degree. Regarding the work process, the students were the work object, the tools used were the knowledge and the experience as a nurse, and the work environment was considered good. Regarding the form of work organization, 76% have a 44-hour workweek, the wage was considered inadequate and the workload was higher than foreseen in the contract. The dialectic of the nursing work process is evidenced, demonstrating the contradiction between the low wages and labor overload and the narratives reporting a good work environment, personal fulfillment and transcendence that goes far beyond work. Conclusions: the work process allows describing the work components of the nursing professors, which are consistent with the results of the literature and show the dialectic of the nursing work process. PMID:29211193

  8. Professor Witold Nowicki - a greatly spirited pathologist.

    Science.gov (United States)

    Wincewicz, A; Szepietowska, A; Sulkowski, S

    2016-06-01

    This paper presents a complete overview of the scientific, professional and social activity of a great Polish pathologist, Witold Nowicki (1878-1941), from mainly Polish-written, original sources with a major impact on mostly his own publications. The biographical commemoration of this eminent professor is not only due to the fact that he provided a profound microscopic characterization of pneumatosis cystoides in 1909 and 1924. Nowicki greatly influenced the development of anatomical pathology in Poland, having authored over 82 publications, with special reference to tuberculosis, lung cancer, sarcomatous carcinomas, scleroma and others. However, the first of all his merits for the readership of Polish pathologists was his textbook titled Anatomical Pathology, which was a basic pathology manual in pre-war Poland. Witold Nowicki - as the head of the academic pathological anatomy department and former dean of the medical faculty - was shot with other professors by Nazi Germans in the Wuleckie hills in Lvov during World War Two. Professor Nowicki was described as being "small in size but great in spirit" by one of his associates, and remains an outstanding example of a meticulous pathologist, a patient tutor and a great social activist to follow.

  9. O professor_: de quem estamos falando mesmo?

    Directory of Open Access Journals (Sweden)

    Santos, Fabiane Konowaluk

    2004-01-01

    Full Text Available O presente texto procura abordar a temática relacionada à auto-imagem do professor, constatada através de uma enquete e da construção de um website que subsidiou o tensionamento com o real. Segundo Arroyo (2000, p. 124, “carregamos a função que exercemos, que somos e a imagem de professor(a que internalizamos”. Dessa forma, o tema em estudo segue, ainda hoje, sendo altamente significativo, pois não podemos esquecer os momentos históricos, políticos e sociais vivenciados pelos professores, buscando justamente explicações sobre como as questões de auto-imagem, o fazer e suas competências, suas possibilidades e limites e outros tantos fatores que estão a alterar seu comportamento. Arroyo (2000, p. 124 assinala que a auto-imagem docente é apreendida em múltiplos espaços e tempos, em múltiplas vivências, como resultado das condições psicológicas e sociais que afetam sua docência

  10. A CHARACTERIZATION OF COINS FROM THE NAJRAN HOARD, SAUDI ARABIA, PRIOR TO CONSERVATION

    Directory of Open Access Journals (Sweden)

    Abdulnaser AL-ZAHRANI

    2012-09-01

    Full Text Available This paper presents the results of scientific examinations and analyses carried out on the archaeological coins discovered in Najran, Saudi Arabia. Optical microscopy (OM, scanning electron microscopy (SEM coupled with energy dispersive spectrometry (EDS and X-ray diffraction (XRD were used to investigate morphological corrosion features, to clear the nature of the patina and to analyze the elementary composition. Morphologically, it was revealed that there are reniform, coral reef and dendritic shapes of corrosion products and heterogeneous multicolor patina on the studied coin surfaces. It was proven that those coins were made of a silver-copper alloy and were covered by three superficial corrosion layers. The main composition of the coin corrosion compounds was identified as copper carbonate, copper chloride, copper silicates, silver chlorides and silver sulphide. The proposed corrosion mechanism revealed that those coins were characterized by heavy degradation phenomena, induced by corrosive species and soil contaminants. The corrosion processes led to the depletion of the copper and silver enrichment near the surface, as compared to the core composition. This study provides useful information for the conservation and preservation of the Najran hoard coins.

  11. Analysis of gold coins on the XIX century by portable XRF

    International Nuclear Information System (INIS)

    Pereira, Marcelo O.; Felix, Valter de S.; Freitas, Renato P.

    2017-01-01

    Coins are cultural symbols and reflect important historical events through of the history. Archaeologists, historians and other experts make use of the study of coins (Numismatics) to reconstruct the economy, forms of commerce, customs, religion, political history and art of people and region throughout the globe. The knowledge about the composition of the metal alloy of coins is essential to characterize the fabrication in a historical period and identify possible falsifications. The X-ray Fluorescence (XRF) is a technique of analysis spectroscopic widely used in archaeometry to investigate the elemental composition of pigments, ceramic objects, metal alloy. In this work were XRF analyzes used in a rare coin of the coronation of the emperor D. Pedro I in 1822, Brazilian coins of 1816 and a Portuguese coin of 1823 from the collection of the Museu Histórico Nacional of Rio de Janeiro (MHN). The XRF analyzes were performed using a portable Bruker TRACE IV model system, the spectra operation at a voltage of 40 keV and electric current of 10 uA in acquisition time of 60s. The results indicated the presence of Au, Ag, Cu. The portable X-ray system was shown to be powerful tool in the investigation of metallic alloys with high concentration. (author)

  12. Analysis of gold coins on the XIX century by portable XRF

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Marcelo O. [Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (CEFET/RJ), Nova Iguaçu, RJ (Brazil); Felix, Valter de S.; Freitas, Renato P. [Instituto Federal do Rio de Janeiro (LISCOMP/IFRJ), Paracambi, RJ (Brazil). Lab. de Instrumentação e Simulação Computacional; Aranha, Paula de J.M.; Heringer, Pedro C.S., E-mail: marcelocefetrj@gmail.com, E-mail: renato.freitas@ifrj.edu.br, E-mail: Pedro.Heringer@museus.gov.br, E-mail: Paula.Aranha@museus.gov.br [Museu Histórico Nacional (IBRAM), Rio de Janeiro, RJ (Brazil)

    2017-07-01

    Coins are cultural symbols and reflect important historical events through of the history. Archaeologists, historians and other experts make use of the study of coins (Numismatics) to reconstruct the economy, forms of commerce, customs, religion, political history and art of people and region throughout the globe. The knowledge about the composition of the metal alloy of coins is essential to characterize the fabrication in a historical period and identify possible falsifications. The X-ray Fluorescence (XRF) is a technique of analysis spectroscopic widely used in archaeometry to investigate the elemental composition of pigments, ceramic objects, metal alloy. In this work were XRF analyzes used in a rare coin of the coronation of the emperor D. Pedro I in 1822, Brazilian coins of 1816 and a Portuguese coin of 1823 from the collection of the Museu Histórico Nacional of Rio de Janeiro (MHN). The XRF analyzes were performed using a portable Bruker TRACE IV model system, the spectra operation at a voltage of 40 keV and electric current of 10 uA in acquisition time of 60s. The results indicated the presence of Au, Ag, Cu. The portable X-ray system was shown to be powerful tool in the investigation of metallic alloys with high concentration. (author)

  13. Archaeometrical studies on medieval silver coins at the Bucharest Tandem Accelerator

    International Nuclear Information System (INIS)

    Bugoi, Roxana; Constantin, Florin; Constantinescu, Bogdan

    2002-01-01

    The analysis of archaeological objects requires simultaneously, non-destructive, fast, versatile, sensitive and multielemental methods. The purpose of our work is to help Romanian curators to identify objects' provenance (workshops, technologies, mines) and to establish commercial, military and political connections. Medieval Moldavian (XIV-XVI Centuries) silver coins (groschen) were studied to determine the evolution of the coinage (debasement, metal sources, minting technologies). For these coins, two methods were used: 3 MeV protons PIXE (Proton Induced X-ray Emission) and 241 Am source based XRF (X-Ray Fluorescence). XRF was used to determine the heavier elements concentrations. Comparing the trace elements results (Bi, Pb, Zn, Au, Sb) obtained on these samples with the ones on coins from the neighboring countries (Hungary, Poland, Tatar Khanate, Bohemia) we concluded that a lot of Moldavian emissions were made by melting foreign coins, probably obtained as customs taxes. For some coins, the Hg presence is an indication of the use of local silver ores to manufacture local money. The relationship between the silver content of the coins and the military conflicts during various periods is discussed. (authors)

  14. Visit of Professor Shigehiko Hasumi. President of Tokyo University, Japan, Professor Kazuo Okamoto, Head of Graduate School of Mathematical Sciences, Professor Toshiteru Matsuura, Head of Graduate School of Arts and Sciences

    CERN Multimedia

    Patrice Loiez

    1999-01-01

    Visit of Professor Shigehiko Hasumi. President of Tokyo University, Japan, Professor Kazuo Okamoto, Head of Graduate School of Mathematical Sciences, Professor Toshiteru Matsuura, Head of Graduate School of Arts and Sciences

  15. Authentication of two samples of ancient Chinese coins with component element depth analysis by confocal 3D XRF

    Science.gov (United States)

    Zhou, Peng; Liu, Zhiguo; Lin, Xiaoyan; Liu, Xin; Ye, Lei; Wang, Xingyi; Pan, Kai; Li, Yude

    2018-05-01

    Two samples of ancient Chinese coins were analyzed with a confocal three-dimensional micro-X-ray fluoroscope. The depth distributions of elemental iron (Fe), calcium (Ca) and copper (Cu) were obtained based on this non-destructive measurement method. One coin, named "Chongning Tongbao", was certified as genuine in accordance with the available archaeological data, whereas another coin, named "Zhenglong Yuanbao", was identified as a reproduction.

  16. Redox Pioneer: Professor Vadim N. Gladyshev.

    Science.gov (United States)

    Hatfield, Dolph L

    2016-07-01

    Professor Vadim N. Gladyshev is recognized here as a Redox Pioneer, because he has published an article on antioxidant/redox biology that has been cited more than 1000 times and 29 articles that have been cited more than 100 times. Gladyshev is world renowned for his characterization of the human selenoproteome encoded by 25 genes, identification of the majority of known selenoprotein genes in the three domains of life, and discoveries related to thiol oxidoreductases and mechanisms of redox control. Gladyshev's first faculty position was in the Department of Biochemistry, the University of Nebraska. There, he was a Charles Bessey Professor and Director of the Redox Biology Center. He then moved to the Department of Medicine at Brigham and Women's Hospital, Harvard Medical School, where he is Professor of Medicine and Director of the Center for Redox Medicine. His discoveries in redox biology relate to selenoenzymes, such as methionine sulfoxide reductases and thioredoxin reductases, and various thiol oxidoreductases. He is responsible for the genome-wide identification of catalytic redox-active cysteines and for advancing our understanding of the general use of cysteines by proteins. In addition, Gladyshev has characterized hydrogen peroxide metabolism and signaling and regulation of protein function by methionine-R-sulfoxidation. He has also made important contributions in the areas of aging and lifespan control and pioneered applications of comparative genomics in redox biology, selenium biology, and aging. Gladyshev's discoveries have had a profound impact on redox biology and the role of redox control in health and disease. He is a true Redox Pioneer. Antioxid. Redox Signal. 25, 1-9.

  17. The trace element analysis of ancient Indian coins using proton induced x-ray emission (PIXE) technique

    International Nuclear Information System (INIS)

    PURI, N.K.; HAJIVALIEI, M.; BEDI, S.C.; SINGH, N.; GOVIL, I.M.; GARG, M.L.; HANDA, D.K.; GOVIL, K.L.; ROUT, B.; VIJAYAN, V.

    2004-01-01

    Elemental analysis of ancient Indian coins viz. thirty-three punched marked coins (6 th century B.C.), fifty-nine coins belonging to Kusanas (78-250 A.D) and twenty-five coins belonging to medieval period (11 th -14 th century A.D), from India have been analysed using Proton Induced X-ray Emission (PIXE) technique. The elements namely S, Ca, Fe, Ag, Cu, Ni and Pb were detected in most of the punch-marked coins while elements namely S, Cl, K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, As and Zn were detected in most of the Kusanas coins and the S, Ca, Fe, Cu, Ag, Sn, Pb were detected in 11 th -14 th century A.D. coins. Based on the elemental analysis different hypotheses put forward in the earlier literature were examined. This is the first attempt where reasonable number of ancient coins belonging to different periods were analysed by modern non destructive multi-elemental technique such as PIXE and has put the importance of the elemental analysis of ancient Indian coins in the proper perspective

  18. A practical study for Treatment and Conservation a group of Silver Coins from Dhamar Regional Museum, Dhamar, Yemen.

    OpenAIRE

    Mohamed M. Megahed

    2014-01-01

    A big group of silver coins{35 coins} was discovered in Banawa excavation , Dhamar , season 2002, and now it is situated in Dhamar Regional Museum ,Yemen. They were covered with a thin grey and black corrosion layers that disfigured them and hid their figures and inscriptions , also Some coins miss parts and others lost their circular.The aims of this work are identified the metallic composition of the coins , investigate the nature of corrosion grown during the long-term burial and identify ...

  19. O fracasso escolar no discurso do professor

    OpenAIRE

    Piccirilli, Manoela de Souza Silva

    2014-01-01

    O fracasso escolar tem sido repetidamente abordado em pesquisas de diversas naturezas que buscam diferentes razões para sua ocorrência. Essa dissertação não pretende elaborar mais uma suposição do que venha a ser o fracasso escolar, mas analisar os sentidos deste no discurso de alguns professores de educação básica. Trata-se de um estudo qualitativo realizado sob a ótica da teoria-metodológica da Análise de Discurso de linha francesa a partir de Michel Pêcheux. O procedimento ...

  20. An Interview with Professor Roy Caldwell

    OpenAIRE

    Chowdhary, Kuntal; Bhat, Prashant; Rosen, Jared; Naughton, Ida; Wang, Jingyan

    2013-01-01

    Envision the underwater world: vibrant coral, swaying seaweed, and lively creatures abound. However, the postcards and National Geographic covers that try to capture the beauty of this picturesque habitat can only represent it at one moment in time -- in reality, the landscape is hardly static, since many of its animals are capable of body modifications to change their shape and color. To understand the coloration and color vision of sea creatures, UC Berkeley Professor Roy L. Caldwell resear...

  1. Analysis of corrosion layers in ancient Roman silver coins with high resolution surface spectroscopic techniques

    Energy Technology Data Exchange (ETDEWEB)

    Keturakis, Christopher J. [Operando Molecular Spectroscopy and Catalysis Research Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, PA 18015 (United States); Notis, Ben [Brandeis University, Waltham, MA 02453 (United States); Blenheim, Alex [Department of Mechanical Engineering, Pennsylvania State University, College Park, PA 16802 (United States); Miller, Alfred C.; Pafchek, Rob [Zettlemoyer Center for Surface Studies, Lehigh University, Bethlehem, PA 18015 (United States); Notis, Michael R., E-mail: mrn1@lehigh.edu [Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015 (United States); Wachs, Israel E., E-mail: iew0@lehigh.edu [Operando Molecular Spectroscopy and Catalysis Research Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, PA 18015 (United States)

    2016-07-15

    Highlights: • Five ancient silver alloy coins (225 BCE–244 CE) were analyzed using surface characterization techniques. • Both destructive and non-destructive surface characterization methods were developed. • Alloying with copper, even in small amounts, leads to the formation of an outer Cu{sub 2}O corrosion layer. - Abstract: Determination of the microchemistry of surface corrosion layers on ancient silver alloy coins is important both in terms of understanding the nature of archaeological environmental conditions to which these ancient coins were exposed and also to help in their conservation. In this present study, five ancient silver alloy coins (225 BCE–244 CE) were used as test vehicles to measure their immediate surface microchemistry and evaluate the appropriateness and limitations of High Sensitivity-Low Energy Ion Scattering Spectroscopy (HS-LEIS, 0.3 nm depth analysis), High Resolution-X-ray Photoelectron Spectroscopy (HR-XPS, 1–3 nm depth analysis) and High Resolution-Raman Spectroscopy (HR-Raman, ∼1000 nm depth analysis). Additional information about the deeper corrosion layers, up to ∼300–1000 nm, was provided by dynamic HS-LEIS and HR-Raman spectroscopy. While not archeologically significant, the use of these coins of small commercial value provides data that is more representative of the weaker signals typically obtained from ancient corroded objects, which can be in stark contrast to pristine data often obtained from carefully prepared alloys of known composition. The oldest coins, from 225 to 214 BCE, possessed an outermost surface layer containing Cu{sub 2}O, Na, Al, Pb, and adsorbed hydrocarbons, while the more recent coins, from 98 to 244 CE, contained Cu{sub 2}O, Ag, N, F, Na, Al, S, Cl, and adsorbed hydrocarbons in similar corresponding surface layers. It thus appears that alloying with copper, even in small amounts, leads to the formation of an outer Cu{sub 2}O layer. Depth profiling revealed the presence of K, Na, Cl, and

  2. Analysis of corrosion layers in ancient Roman silver coins with high resolution surface spectroscopic techniques

    International Nuclear Information System (INIS)

    Keturakis, Christopher J.; Notis, Ben; Blenheim, Alex; Miller, Alfred C.; Pafchek, Rob; Notis, Michael R.; Wachs, Israel E.

    2016-01-01

    Highlights: • Five ancient silver alloy coins (225 BCE–244 CE) were analyzed using surface characterization techniques. • Both destructive and non-destructive surface characterization methods were developed. • Alloying with copper, even in small amounts, leads to the formation of an outer Cu 2 O corrosion layer. - Abstract: Determination of the microchemistry of surface corrosion layers on ancient silver alloy coins is important both in terms of understanding the nature of archaeological environmental conditions to which these ancient coins were exposed and also to help in their conservation. In this present study, five ancient silver alloy coins (225 BCE–244 CE) were used as test vehicles to measure their immediate surface microchemistry and evaluate the appropriateness and limitations of High Sensitivity-Low Energy Ion Scattering Spectroscopy (HS-LEIS, 0.3 nm depth analysis), High Resolution-X-ray Photoelectron Spectroscopy (HR-XPS, 1–3 nm depth analysis) and High Resolution-Raman Spectroscopy (HR-Raman, ∼1000 nm depth analysis). Additional information about the deeper corrosion layers, up to ∼300–1000 nm, was provided by dynamic HS-LEIS and HR-Raman spectroscopy. While not archeologically significant, the use of these coins of small commercial value provides data that is more representative of the weaker signals typically obtained from ancient corroded objects, which can be in stark contrast to pristine data often obtained from carefully prepared alloys of known composition. The oldest coins, from 225 to 214 BCE, possessed an outermost surface layer containing Cu 2 O, Na, Al, Pb, and adsorbed hydrocarbons, while the more recent coins, from 98 to 244 CE, contained Cu 2 O, Ag, N, F, Na, Al, S, Cl, and adsorbed hydrocarbons in similar corresponding surface layers. It thus appears that alloying with copper, even in small amounts, leads to the formation of an outer Cu 2 O layer. Depth profiling revealed the presence of K, Na, Cl, and S as key

  3. In Memoriam: Professor Jan M. Hoem

    Directory of Open Access Journals (Sweden)

    James W. Vaupel

    2017-02-01

    Full Text Available Jan Hoem died on Saturday in Stockholm after a long illness. Jan became Director of the Max Planck Institute for Demographic Research (MPIDR in 1999; he and I jointly led the Institute for almost eight years. During this period he served as Editor of Demographic Research; he took on this responsibility shortly after the journal was launched and built the journal into a respected online source of cutting-edge analysis. Jan was a superb colleague, with very good judgment, a delightful sense of humor, and deep devotion to research quality. A pioneer of event history analysis, he understood the subtleties of the subject better than anyone else. Jan was born and educated in Norway and worked in Oslo before becoming Professor in Copenhagen and then Professor in Stockholm, where he established SUDA, a leading demographic research initiative. His dedication to high-quality, statistically sophisticated population research at SUDA and MPIDR as well as in the journal Demographic Research substantially advanced the discipline of demography. Jan was a warm and generous teacher, a loyal colleague, and a caring friend whom many people will long remember with gratitude and respect. James W. Vaupel Publisher, Demographic Research

  4. Interview: Interview with Professor Malcolm Rowland.

    Science.gov (United States)

    Rowland, Malcolm

    2010-03-01

    Malcolm Rowland is Professor Emeritus and former Dean of the School of Pharmacy and Pharmaceutical Sciences and a member and former director (1996-2000), of the Centre for Applied Pharmacokinetic Research, University of Manchester. He holds the positions of Adjunct Professor, School of Pharmacy, University of California, San Francisco; Member, Governing Board, EU Network of Excellence in Biosimulation; Founder member of NDA Partners; academic advisor to a Pharmaceutical initiative in prediction of human pharmacokinetics and Scientific Advisor to the EU Microdose AMS Partnership Program. He was President of the EU Federation for Pharmaceutical Sciences (1996-2000); Vice-President of the International Pharmaceutical Federation (2001-2009) and a Board Member of the National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3Rs, 2004-2008). He received his degree in Pharmacy and PhD at the University of London and was on faculty (School of Pharmacy, University of California San Francisco [1967-1975]) before taking up a professorship at Manchester. His main research interest is physiologically based pharmacokinetics and its application to drug discovery, development and use. He is author of over 300 scientific articles and co-author, with TN Tozer, of the textbooks Clinical Pharmacokinetics and Pharmacodynamics: Concepts and Applications and Introduction to Pharmacokinetics and Pharmacodynamics. He was editor of the Journal of Pharmacokinetics and Pharmacodynamics (formerly Journal of Pharmacokinetics and Biopharmaceutics, 1973-2007) and, since 1977, has organized regular residential workshops in pharmacokinetics.

  5. Professor de Hevesy traces radioisotope history

    International Nuclear Information System (INIS)

    1965-01-01

    Professor George de Hevesy, who was a pioneer in the field of radioactive tracers, prepared this paper for the IAEA symposium on Radiochemical Methods of Analysis, held at Salzburg in October 1964. Professor de Hevesy was born in Budapest in 1885. He studied in Budapest, Berlin and Freiburg, and spent some years at Zurich when Einstein was there. In 1911 he went to Manchester to work with Rutherford and there witnessed some of the greatest discoveries in the history of physics. At the end of 1912 he visited the Vienna Institute for Radium Research, where he worked with Paneth, and in 1913 applied the method of labelled lead for the first time. After the first world war, he worked at the Institute for Theoretical Physics in Copenhagen; since 1943, his chief activities have been in Sweden. In 1923, with Coster, he discovered the element hafnium. He made notable discoveries on the mobility of ions, and isotope separation, and his work on radioisotope tracers, which has had important biological applications, won him the Nobel Prize for Chemistry in 1943

  6. Study of archaeological coins of different dynasties using libs coupled with multivariate analysis

    Science.gov (United States)

    Awasthi, Shikha; Kumar, Rohit; Rai, G. K.; Rai, A. K.

    2016-04-01

    Laser Induced Breakdown Spectroscopy (LIBS) is an atomic emission spectroscopic technique having unique capability of an in-situ monitoring tool for detection and quantification of elements present in different artifacts. Archaeological coins collected form G.R. Sharma Memorial Museum; University of Allahabad, India has been analyzed using LIBS technique. These coins were obtained from excavation of Kausambi, Uttar Pradesh, India. LIBS system assembled in the laboratory (laser Nd:YAG 532 nm, 4 ns pulse width FWHM with Ocean Optics LIBS 2000+ spectrometer) is employed for spectral acquisition. The spectral lines of Ag, Cu, Ca, Sn, Si, Fe and Mg are identified in the LIBS spectra of different coins. LIBS along with Multivariate Analysis play an effective role for classification and contribution of spectral lines in different coins. The discrimination between five coins with Archaeological interest has been carried out using Principal Component Analysis (PCA). The results show the potential relevancy of the methodology used in the elemental identification and classification of artifacts with high accuracy and robustness.

  7. Authenticity determination of Ag-Cu Lebanese coins using combined PIXE and RBS techniques

    International Nuclear Information System (INIS)

    Roumie, M; Nsouli, B; Assafiri, Y

    2012-01-01

    A set of silver-copper coins were investigated for their stochiometry in order to check any possible counterfeit. The studied coins are 50 Lebanese Piastres and are relatively recent, minted in 1952. They are supposed to have nominal concentration of 60 wt.% Ag and 40 wt.% Cu. In this work, it is shown the utility and capability of combining PIXE (particle induced X-ray emission) and RBS (Rutherford backscattering spectrometry) techniques to determine the elemental content and check the presence, if any, of surface layer. For this aim, 3 MeV proton beam and Al funny filter, used as x-ray absorber, were used to determine the elemental composition, based on the emission and detection of the characteristic x-rays of the corresponding elements. The first PIXE results of the supposed bulky coins showed an excess of silver composition vs. copper. In addition, the experimental protocol was checked by analyzing some other coins of known composition, such as 1-euro and 2-euro coins.

  8. Archaeometrical studies on medieval silver coins at the Bucharest TANDEM Accelerator

    International Nuclear Information System (INIS)

    Bugoi, R.; Constantin, F.; Constantinescu, B.; Oberlaender-Tarnoveanu, E.; Parvan, K.

    2003-01-01

    An extensive study on Medieval Moldavian (XIVth - XVIth Centuries) silver coins (Groschen) using 3 MeV protons PIXE (Proton Induced X-ray Emission) and '2 41 Am source based XRF (X-Ray Fluorescence) was performed in order to determine the evolution of the coinage (debasement, metal sources, minting technologies). XRF was used to determine heavier elements concentrations. Comparing the trace elements results (Bi, Pb, Zn, Au) obtained on these samples with the ones on coins from Hungary, Poland, Tatar Khanate, Bohemia we bring support to the curator hypothesis that a lot of Moldavian emissions were made by melting foreign coins, possibly obtained as customs taxes or from trade with these neighbouring countries. For the late medieval silver coins, the high Hg content may be an indication of an imperfect metallurgical processing of the local silver ores. The relationship between the silver content of the coins and the military conflicts corresponding to the minting periods is discussed, taking into account the fact that crisis times are characterized by a decrease in the precious metal concentration. (authors)

  9. Archaeometrical studies on medieval silver coins at the Bucharest Tandem Accelerator

    International Nuclear Information System (INIS)

    Bugoi, Roxana; Constantin, Florin; Constantinescu, Bogdan

    2005-01-01

    An extensive study on Medieval Moldavian (XIVth - XVIth Centuries) silver coins (groschen) using 3 MeV protons PIXE (Proton Induced X-ray Emission) and 241 Am source based XRF (X-Ray Fluorescence) was performed in order to determine the evolution of the coinage (debasement, metal sources, minting technologies). XRF was used to determine the heavier elements concentrations. Comparing the trace element results (Bi, Pb, Zn, Au) obtained on these samples with the ones on coins from Hungary, Poland, Tatar Khanate, Bohemia, we bring support to the curator hypothesis that a lot of Moldavian emissions were made by melting foreign coins, possibly obtained as customs taxes or from trade with these neighbouring countries. For the late medieval silver coins, the high Hg content may be an indication of an imperfect metallurgical processing of the local silver ores. The relationship between the silver content of the coins and the military conflicts corresponding to the minting periods is discussed, taking into account the fact that crisis times are characterized by a decrease in the precious metal concentration. (authors)

  10. A ATUAÇÃO DE PROFESSORES DE ENSINO SUPERIOR: INVESTIGANDO DOIS PROFESSORES BEM AVALIADOS PELOS ESTUDANTES

    Directory of Open Access Journals (Sweden)

    Ana Luiza de Quadros

    2016-06-01

    Full Text Available In the last years, higher education teacher training has received more didactic-pedagogical attention. Despite numerous criticisms to professors' work, some practices present differentials that make them a reference to students, even among university professors with undergraduate and graduate degrees in their specific areas of knowledge. To analyze the classes of such professors who become a reference to students, we selected two higher education professors of chemistry and videotaped their classes seeking to identify the teaching strategies that they use. After analysis, we shared the results with the subjects and complemented them with a semi-structured interview. We found out that these professors perform based on counter-models of professors who they had had in their undergraduate courses and developed strategies aiming to minimize for their students the difficulties they themselves had experienced.

  11. Professor Gender, Age, and “Hotness” in Influencing College Students’ Generation and Interpretation of Professor Ratings

    Directory of Open Access Journals (Sweden)

    Sara L. Sohr-Preston

    2016-09-01

    Full Text Available Undergraduate psychology students rated expectations of a bogus professor (randomly designated a man or woman and hot versus not hot based on an online rating and sample comments as found on RateMyProfessors.com (RMP. Five professor qualities were derived using principal components analysis (PCA: dedication, attractiveness, enhancement, fairness, and clarity. Participants rated current psychology professors on the same qualities. Current professors were divided based on gender (man or woman, age (under 35 or 35 and older, and attractiveness (at or below the median or above the median. Using multivariate analysis of covariance (MANCOVA, students expected hot professors to be more attractive but lower in clarity. They rated current professors as lowest in clarity when a man and 35 or older. Current professors were rated significantly lower in dedication, enhancement, fairness, and clarity when rated at or below the median on attractiveness. Results, with previous research, suggest numerous factors, largely out of professors’ control, influencing how students interpret and create professor ratings. Caution is therefore warranted in using online ratings to select courses or make hiring and promotion decisions. 

  12. The hoard of Becin - non-destructive analysis of the silver coins

    International Nuclear Information System (INIS)

    Rodrigues, M.; Schreiner, M.; Melcher, M.; Maeder, M.; Guerra, M.; Salomon, J.; Radtke, M.; Alram, M.; Schindel, N.

    2010-01-01

    We report the results of an analytical investigation on 416 silver-copper coins stemming from the Ottoman Empire (end of 16th and beginning of 17th centuries), using synchrotron micro X-ray fluorescence analysis (SRXRF). In the past, analyses had already been conducted with energy dispersive X-ray fluorescence analysis (EDXRF), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM/EDX) and proton induced X-ray emission spectroscopy (PIXE). With this combination of techniques it was possible to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. For the interpretation of the data statistical analysis (principal component analysis - PCA) has been performed. A definite local assignment was explored and significant clustering was obtained regarding the minor and trace elements composing the coin alloys. (orig.)

  13. The Third Side of the Coin: Using Google Earth to Visualize Numismatic Data

    Directory of Open Access Journals (Sweden)

    Kristina Neumann

    2017-12-01

    Full Text Available This article presents one digital approach to ancient numismatics. The proposed methodology maps geo-referenced quantities of coin finds within the platform of Google Earth – a free virtual globe available through the Internet. Especially for the uninitiated scholar, Google Earth efficiently visualizes both the spatial and chronological distribution of thousands of coins and provides an intuitive and interactive space for exploring regional and empire-wide patterns in their movement. While the practical applications of this methodology are many, this article focuses on an ongoing study of Antioch-on-the-Orontes in northern Syria and its regional evolution after Roman annexation. This project draws upon Google Earth as an invaluable first step in synthesizing the wealth of disparate coin data available for the city. After outlining the methodology to achieve such a visualization, this article highlights several promising patterns revealed by Google Earth in the dataset.

  14. On Some Rare Coins from the Khwarezm Hoard of 13th Century

    Directory of Open Access Journals (Sweden)

    Petrov Pavel N.

    2013-12-01

    Full Text Available Two silver dirhams of Khwarezm, dated to 670 AH/1271AD, with an unusual tamga are analyzed in the article. The coins come from a hoard located in the territory of Turkmenistan, the exact place of discovery being unknown. On both coins under consideration, a new, previously unknown type of tamga has been discovered. Typologically, it belongs to the tamgas of the house of Chagatai. A comparison of the dates of the coins with the information about the 1270s events in Khwarezm made it possible to determine that the tamga belonged to Negubei of the house of Chagatai. The finding also confirms that Kaidu (Qaidu, the khan of the Chagataid state, retained the right of the Chagatai Ulus owners to participate in the distribution of income from Khwarezm from the beginning of his reign.

  15. Robust quantum state engineering through coherent localization in biased-coin quantum walks

    Energy Technology Data Exchange (ETDEWEB)

    Majury, Helena [Queen' s University, Centre for Secure Information Technologies (CSIT), Belfast (United Kingdom); Queen' s University, Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Belfast (United Kingdom); Boutari, Joelle [University of Oxford, Clarendon Laboratory, Oxford (United Kingdom); O' Sullivan, Elizabeth [Queen' s University, Centre for Secure Information Technologies (CSIT), Belfast (United Kingdom); Ferraro, Alessandro; Paternostro, Mauro [Queen' s University, Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Belfast (United Kingdom)

    2018-12-15

    We address the performance of a coin-biased quantum walk as a generator for non-classical position states of the walker. We exploit a phenomenon of coherent localization in the position space - resulting from the choice of small values of the coin parameter and assisted by post-selection - to engineer large-size coherent superpositions of position states of the walker. The protocol that we design appears to be remarkably robust against both the actual value taken by the coin parameter and strong dephasing-like noise acting on the spatial degree of freedom. We finally illustrate a possible linear-optics implementation of our proposal, suitable for both bulk and integrated-optics platforms. (orig.)

  16. Determination of the silver content in some ancient coins using an Am-Be neutron source

    International Nuclear Information System (INIS)

    Cosma, C.; Fiat, T.; Znamizovschi, V.; Daraban, L.; Morariu, V.; Boros, D.; Alicu, D.

    1985-01-01

    The silver content of 40 Roman and Greek coins was determined using neutron activation analysis. with an M-Be thermal source. The pure silver standard had a weigth and shape similar to those of the analyzed coins. A monopchannel spectrometer with a NaI(Tl), 45x40 mm scintillator crystal was used. The coins were placed at the center of the entrance window of the crystal, the maximum measuring geometry being about 2π. A VA-5-968 scintillation probe was used, placed in a VA-H-161 lead shield in order to reduce the background of the detector. The irradiation time, cooling time and measuring time were 2 min, 20 sec and 1 min correspondingly. The ratio of counting rates for the standard material and the background was 2,5. The experimental errors were about 5% for concentrations higher than 50% and increasingly higher for lower silver concentrations

  17. Characterization and supercapacitor application of coin-like β-nickel hydroxide nanoplates

    International Nuclear Information System (INIS)

    Li Hongliang; Liu Suqin; Huang Chenghuan; Zhou Zhi; Li Yanhua; Fang Dong

    2011-01-01

    Coin-like nickel hydroxide nanoplates are synthesized via a simple coordination homogeneous precipitation method. The structure and morphology of as-prepared products are characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and scanning electron microscopy. It is demonstrated that the products are typical β-nickel hydroxide with bunches coin-like nanoplates morphology. The electrochemical properties of coin-like β-Ni(OH) 2 are examined by cyclic voltammetric, chronopotentiometry and electrochemical impedance spectroscope. Cyclic voltammetric studies show that the electrodes have good reversibility. A specific capacitance of 1532 F g −1 is obtained at a charge/discharge current density of 0.2 A g −1 .

  18. CreditCoin: A Privacy-Preserving Blockchain-Based Incentive Announcement Network for Communications of Smart Vehicles

    KAUST Repository

    Li, Lun

    2018-01-23

    The vehicular announcement network is one of the most promising utilities in the communications of smart vehicles and in the smart transportation systems. In general, there are two major issues in building an effective vehicular announcement network. First, it is difficult to forward reliable announcements without revealing users\\' identities. Second, users usually lack the motivation to forward announcements. In this paper, we endeavor to resolve these two issues through proposing an effective announcement network called CreditCoin, a novel privacy-preserving incentive announcement network based on Blockchain via an efficient anonymous vehicular announcement aggregation protocol. On the one hand, CreditCoin allows nondeterministic different signers (i.e., users) to generate the signatures and to send announcements anonymously in the nonfully trusted environment. On the other hand, with Blockchain, CreditCoin motivates users with incentives to share traffic information. In addition, transactions and account information in CreditCoin are tamper-resistant. CreditCoin also achieves conditional privacy since Trace manager in CreditCoin traces malicious users\\' identities in anonymous announcements with related transactions. CreditCoin thus is able to motivate users to forward announcements anonymously and reliably. Extensive experimental results show that CreditCoin is efficient and practical in simulations of smart transportation.

  19. Analyzing Lead Content in Ancient Bronze Coins by Flame Atomic Absorption Spectroscopy: An Archaeometry Laboratory with Nonscience Majors

    Science.gov (United States)

    Donais, Mary Kate; Whissel, Greg; Dumas, Ashley; Golden, Kathleen

    2009-01-01

    A unique, interdisciplinary collaboration between chemistry and classics has led to the development of an experiment for nonscience majors. This instrumental analysis experiment was designed for use in an archaeology course to quantify the amount of lead in ancient bronze coins. The coins were corroded beyond visual identification, so provenance…

  20. 77 FR 32716 - Price for the 2012 American Eagle San Francisco Two-Coin Silver Proof Set

    Science.gov (United States)

    2012-06-01

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the 2012 American Eagle San Francisco Two...: The United States Mint is announcing the price of the 2012 American Eagle San Francisco Two-Coin Silver Proof Set. The coin set will be offered for sale at a price of $149.95. FOR FURTHER INFORMATION...

  1. Characterization of the silver coins of the Hoard of Beçin by X-ray based methods

    Science.gov (United States)

    Rodrigues, M.; Schreiner, M.; Melcher, M.; Guerra, M.; Salomon, J.; Radtke, M.; Alram, M.; Schindel, N.

    2011-12-01

    Four hundred sixteen silver coins stemming from the Ottoman Empire (16th and 17th centuries) were analyzed in order to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. As most of the coins showed the typical green patina on their surfaces due to corrosion processes which have led to the depletion of copper in the near-surface domains of the silver coins in comparison to their core composition, small samples by cutting splinters from the coins had to be taken, embedded in synthetic resin and cross-sectioned in order to investigate the true-heart metal composition. The type of the alloy was investigated as well as if coins minted in different locations demonstrated homogeneous traits concerning the predominant impurities which could suggest a common ore. Several X-ray based techniques (μ-XRF, μ-SRXRF and μ-PIXE) could be applied in order to determine the silver contents as well as the minor and trace elements. Finally, SEM/EDX was applied in order to study the homogeneity/heterogeneity of the coins and the presence of surface enrichments. In general, the silver content of the analyzed specimen varies between 90% and 95%. These outcomes have not supported the historical interpretations, which predict that during the period studied a debasement of approximately 44% of the silver content of the coins should have occurred.

  2. Characterization of the silver coins of the Hoard of Beçin by X-ray based methods

    International Nuclear Information System (INIS)

    Rodrigues, M.; Schreiner, M.; Melcher, M.; Guerra, M.; Salomon, J.; Radtke, M.; Alram, M.; Schindel, N.

    2011-01-01

    Four hundred sixteen silver coins stemming from the Ottoman Empire (16th and 17th centuries) were analyzed in order to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. As most of the coins showed the typical green patina on their surfaces due to corrosion processes which have led to the depletion of copper in the near-surface domains of the silver coins in comparison to their core composition, small samples by cutting splinters from the coins had to be taken, embedded in synthetic resin and cross-sectioned in order to investigate the true-heart metal composition. The type of the alloy was investigated as well as if coins minted in different locations demonstrated homogeneous traits concerning the predominant impurities which could suggest a common ore. Several X-ray based techniques (μ-XRF, μ-SRXRF and μ-PIXE) could be applied in order to determine the silver contents as well as the minor and trace elements. Finally, SEM/EDX was applied in order to study the homogeneity/heterogeneity of the coins and the presence of surface enrichments. In general, the silver content of the analyzed specimen varies between 90% and 95%. These outcomes have not supported the historical interpretations, which predict that during the period studied a debasement of approximately 44% of the silver content of the coins should have occurred.

  3. Professor Howard Mason and oxygen activation

    International Nuclear Information System (INIS)

    Waterman, Michael R.

    2005-01-01

    Our understanding of the classification, function, mechanism, and structure of the enzymes which incorporate atoms of oxygen from atmospheric molecular oxygen during catalysis is based on the thoughtful and technically challenging experiments of two giants in the field of Biochemistry, Howard Mason and Osamu Hayaishi. This volume celebrates the 50th anniversary of the discovery and characterization of these 'oxygenase' enzymes and provides a broad view of how far this area of research has advanced. Professor Hayaishi describes herein his perspective on the background and major discoveries which led to the development of this field. Regrettably Howard Mason passed away at age 88 in 2003. I am indeed fortunate to have been a Ph.D. student with Howard and to have the opportunity to briefly review his role in the development of this field for this special commemorative issue of BBRC

  4. Institutional Support for the Virtual Professor

    Directory of Open Access Journals (Sweden)

    Tom JONES

    2004-01-01

    Full Text Available Academics who hold positions at single-mode, distance education institutions are presently being hampered by an adherence to a long-standing set of protocols (specific office location, face-to-face meetings that were put in place when the conventional post-secondary was the norm. With the advent of a powerful merging of personal computers and the internet, a shift from those protocols to one of support for the virtual professor is in the offing, to the benefit of both the professoriate and the student. A key factor in this shift is the degree and quality of institutional support that will allow these changes to take place. This paper focuses on a number of the key factors that will have to be addressed if this new type of distance education academic is to function effectively.

  5. Interview with Professor Dr. Daniel Spreng

    International Nuclear Information System (INIS)

    Nagel, C.; Kilchmann, A.

    2004-01-01

    This interview with Professor Dr. Daniel Spreng of the Center for Energy Policy and Economics (CEPE) in Zuerich, Switzerland, deals with questions concerning research in the area of energy economics. In particular, the situation in Switzerland, where mains-connected sources of energy such as electricity and gas play an important role in energy supply, is looked at in the light of market liberalisation. Various approaches to the liberalisation of gas and electricity systems are discussed and the costs of liberalised supply systems are compared with those of the present monopolistic situation. Also, energy reserves and the use of the gas distribution system in a future hydrogen-based energy supply scenario are looked at. Projects currently being worked on at the CEPE are reviewed

  6. Successful Aging and Frailty: Opposite Sides of the Same Coin?

    Science.gov (United States)

    Woo, Jean; Leung, Jason; Zhang, Tiemei

    2016-09-01

    Operational definitions of successful aging place a strong emphasis on functional capacity, and strategies for successful aging include many factors common to frailty research. We explore the hypothesis that frailty and successful aging are two sides of the same coin and that walking speed may be an objective indicator of successful aging. Observational study of two Chinese cohorts using one to define "fast walkers" and applying this criteria to another cohort to examine associated factors. Community survey in cities in China. A total of 1929 men and women aged 25 to 89 years of age in four cities in China and 4000 men and women 65 years old in Hong Kong SAR China. The top 25th percentile of walking speed for the whole cohort of 1929 men was determined, and the cutoff value was used to define "fast walkers." This value was applied to the Hong Kong Chinese population to examine factors associated with fast walking speed. These factors include age, gender, socioeconomic and lifestyle factors, medical history, quality of life, cognitive function, depressive symptoms, body mass index, body composition, and telomere length. Fast walkers had better self-rated health, lower prevalence of stroke, hypertension, cataracts, osteoporosis, and impaired cognitive function. They were more likely to be current alcohol users, more physically active, consumed more vegetables, had better physical component of health-related quality of life, and received more education. They also had lower body mass index, percentage whole body fat as well as appendicular fat, and higher appendicular muscle mass index. In multivariate analysis, the significant contributing variables were age, gender, current alcohol use, physical activity level, vegetable intake, quality of life, and appendicular fat. The area under the curve value on receiver-operating characteristic analysis was 0.77 for these seven variables. Frailty and successful aging may be considered two sides of the same entity, and fast

  7. Elemental analysis of gold coins by particle induced X-ray emission (PIXE)

    International Nuclear Information System (INIS)

    Ferreira, G.P.; Gil, F.B.

    1981-01-01

    A Van de Graaff accelerator of 2 MeV energy was used for quantitative analysis of gold coins of the eighteenth and nineteenth centuries by the PIXE method. The results reproduce well the known legal title of the coins. However, for confirmation, a small set of Au-Ag-Cu and Au-Cu standards was also analysed. Again, the known composition of the standards was reasonably reproduced. In this way the authors think that the PIXE method is quite adequate for absolutely non-destructive analysis of gold alloy artifacts with no need of standards. (author)

  8. Elemental chemical characterization of coins of currently national circulating by X-ray fluorescence non-destructive techniques

    International Nuclear Information System (INIS)

    Olivera, Paula; Calcina, Esly

    2013-01-01

    Given the frequent counterfeit bills and coins is proposed in this paper to identify the elemental chemical composition; for now, the current official currencies circulating in our country, by Energy Dispersive X-ray Fluorescence technique and non-destructive methods, the goal is to compare with the false and establish the differences that could help identify them immediately taking advantage of the fast response of this technique. Have been identified the elements Al in the coins of 5 cents, Cu and Zn for 10 and 20 cents, Ni, Cu and Zn for 50 cents and a Un Nuevo Sol and Cr, Cu and Zn 2 coins 5 Nuevos Soles. 57 Peruvian coins of different production years and a counterfeit coin of 5 Nuevos Soles have been analyzed, finding Cu and Zn in central part and Fe in circulating edge ring, looking for this one the absence of Ni and Cr, which in the official currency was found. (authors).

  9. The Limited Role of Journalism Professors in Direct Media Criticism.

    Science.gov (United States)

    Bass, Abraham Z.

    This paper discusses reasons why few journalism professors are personally confronting the news media with criticism or praise. One of the primary reasons for this is that journalism professors may fear retribution or keep inbred ties with the media or be following academic tradition. A survey was conducted in Spring 1975 for this report. The…

  10. Student and Professor Gender Effects in Introductory Business Statistics

    Science.gov (United States)

    Haley, M. Ryan; Johnson, Marianne F.; Kuennen, Eric W.

    2007-01-01

    Studies have yielded highly mixed results as to differences in male and female student performance in statistics courses; the role that professors play in these differences is even less clear. In this paper, we consider the impact of professor and student gender on student performance in an introductory business statistics course taught by…

  11. Professor om kystsikring: Ingen universelle løsninger

    DEFF Research Database (Denmark)

    Arnbjerg-Nielsen, Karsten

    2017-01-01

    DEBAT: Der findes ikke universalløsninger mod stigende risiko for stormfloder, men løsninger skal findes, skriver Karsten Arnbjerg-Nielsen, professor ved DTU.......DEBAT: Der findes ikke universalløsninger mod stigende risiko for stormfloder, men løsninger skal findes, skriver Karsten Arnbjerg-Nielsen, professor ved DTU....

  12. Effects of Social Support on Professors' Work Stress

    Science.gov (United States)

    Moeller, Christin; Chung-Yan, Greg A.

    2013-01-01

    Purpose: The purpose of this paper is to examine how various types of workplace social support from different support sources interact with occupational stressors to predict the psychological well-being of university professors. Design/method/approach: A total of 99 full-time professors participated via an online or paper questionnaire. Findings:…

  13. The benefits of being economics professor A (rather than Z)

    NARCIS (Netherlands)

    van Praag, C.M.; van Praag, B.M.S.

    2008-01-01

    Alphabetical name ordering on multi-authored academic papers, which is the convention in economics and various other disciplines, is to the advantage of people whose last name initials are placed early in the alphabet. Professor A, who has been a first author more often than Professor Z, will have

  14. University Pedagogy for Assistant Professors at Aalborg University (Part 2)

    DEFF Research Database (Denmark)

    Kolmos, Anette; Krogh, Lone

    2003-01-01

    In issue 1-2003, Anette Kolmos and Lone Krogh reported on the two-semester study course " University Pedagogy for Assistant Professors at Aalborg University (DK)". Now, in part 2, they are adressing guidelines for supervison and advising of assistant professors in the university teacher education...

  15. Do Professors Have Customer-Based Brand Equity?

    Science.gov (United States)

    Jillapalli, Ravi K.; Jillapalli, Regina

    2014-01-01

    This research endeavors to understand whether certain professors have customer-based brand equity (CBBE) in the minds of students. Consequently, the purpose of this study is to conceptualize, develop, and empirically test a model of customer-based professor brand equity. Survey data gathered from 465 undergraduate business students were used to…

  16. University Curriculum Project--Professors Reflect on Impact.

    Science.gov (United States)

    Babbitt, Beatrice C.

    This paper describes the reflections of the university professors in eight colleges at the University of Nevada, Las Vegas, who were pioneers in integrating assistive technology and related content into their courses and who continue to provide leadership in curricular change. Professors from the colleges of fine and performing arts, business,…

  17. Engaging Undergraduates in Feminist Classrooms: An Exploration of Professors' Practices

    Science.gov (United States)

    Spencer, Leland G.

    2015-01-01

    This article reports the results of a feminist action research project that sought to ascertain professors' best practices for engaging undergraduates in feminist classrooms. In semi-structured interviews, professors recommended assigning readings from a variety of positionalities; creating a safe space for class discussion; relying on data to…

  18. What I Wish My Professors Had Told Me

    Science.gov (United States)

    Collins, Jennifer

    2016-01-01

    What do you wish your undergraduate professors told you before you ever set foot in a classroom? Jennifer Collins, one such professor who prepares pre-service teachers, has a list of six "truths" she shares with her students. In this article, Collins outlines those pieces of advice, which include understanding your larger purpose,…

  19. Mental Health Assessment in Professors' Training in Two Chilean Universities

    Science.gov (United States)

    Ossa, Carlos J.; Quintana, Ingrid M.; Rodriguez, Felipe F.

    2015-01-01

    This study analyzed the evaluation of professors of pedagogy and directors programs, about the importance of mental health in vocational training, and factors that might influence this valuation. The methodology includes participation of 17 academicians (professors and belonging to the managerial staff) of two universities in southern Chile. A…

  20. Academic Labor Markets and Assistant Professors' Employment Outcomes

    Science.gov (United States)

    Hargens, Lowell L.

    2012-01-01

    Using data for 638 assistant professors who joined graduate sociology departments between 1975 and 1992, I examine the claim that when the labor market for new doctorates is weak, assistant professors experience less favorable employment outcomes than when that labor market is strong. Surprisingly, I find that those hired during the weak…

  1. In commemoration of professor V.P. Karpov

    Directory of Open Access Journals (Sweden)

    Semyonova L.S.

    2013-10-01

    Full Text Available This article is about professor Karpov V.P., a prominent scientist, first rector of Yekaterinoslav Medical Academy. Biography of a great investigator, his main achievements in the area of histology, biology, theory and history of medicine was studied. Professor Karpov V.P. always combined his great scientific, organizational and research work with social activity. Monographs of professor Karpov V.P. and conferences organized by him were of great importance in the solution of such new problems as theary of microscope and cell amitosis. Professor Karpov is a founder of a large school of histology. Thanks to his active participation and personal guidance, in 1917 department of histology was founded in Yekaterinoslav Medical Institute. The author of the article has analyzed Hippocrates` works translated into Russian by professor Karpov V.P. and pointed out their significance for modern medical science and practice.

  2. Professor I I Glass A Tribute and Memorial

    CERN Document Server

    Igra, Ozer

    2013-01-01

    The book provides personal memories along with description of scientific works written by ex-graduate students and research associates of the late Professor Glass. The described research work covers a wide range of shock wave phenomena, resulting from seeds planted by Professor Glass. Professor Glass was born in Poland in 1918. He immigrated together with his parents to Canada at the age of 12 and received all his professional education at the University of Toronto, Canada. He became a world recognized expert in shock wave phenomena, and during his 45 years of active research he supervised more than 125 master and doctoral students, post-doctoral fellows and visiting research associates. In this book seven of his past students/research-associates describe their personal memories of Professor Glass and present some of their investigations in shock wave phenomena which sprung from their past work with Professor Glass. Specifically, these investigations include underwater shock waves, shock/bubble interaction, m...

  3. OBITUARY: Professor Jan Evetts in memoriam

    Science.gov (United States)

    Dew-Hughes, David; Campbell, Archie; Glowacki, Bartek

    2005-11-01

    It is with great sadness that we report the death of Jan Evetts, who lost his second battle with cancer on 18 August 2005. In 1988 he was appointed Founding Editor of this journal where his leadership created the foundation upon which its success rests today. He made an outstanding series of contributions to the science of superconductivity and to the understanding of superconducting materials, and was an indefatigable champion of the development of applications of superconductivity. The loss to the scientific community is incalculable, as is attested by the many communications received from colleagues throughout the world. Professor Jan Edgar Evetts (1939-2005) Professor Jan Edgar Evetts (1939-2005) Jan was born on 31 March 1939, and attended the Dragon School in Oxford, and later Haileybury. He was awarded an exhibition to read Natural Sciences at Pembroke College, Cambridge in 1958 and took his BA degree in 1961. He then undertook a Certificate of Postgraduate Study in Physics under the supervision of Professor Neville Mott. He was the first student to undertake this newly-instituted course; the title of his thesis was `The Resistance of Transition Metals'. In 1962 he joined David Dew-Hughes' embryonic superconducting materials research group, along with Archie Campbell and Anant Narlikar. In fact it was Jan's enthusiasm for the proposed course of research that helped convince David that he should follow Professor Alan Cottrell's suggestion to apply metallurgical methodology to the study of the factors that controlled critical current density in the type II superconductors that were then under development for applications in magnets. Competing theories for the critical current density at that time were fine filaments or `Mendelssohn Sponge' versus the pinning of Abrikosov quantized vortices. The results of the group's work, to which Jan made a major contribution, came down heavily in favour of the latter theory. Jan's outstanding characteristic was his

  4. Impacto vocal de professores Teachers' vocal impact

    Directory of Open Access Journals (Sweden)

    Adriana Ricarte

    2011-08-01

    Full Text Available OBJETIVO: analisar o impacto vocal nas atividades diárias em professores do ensino médio. Correlacionar os achado da auto-percepção do problema vocal com os aspectos: efeitos no trabalho, na comunicação diária, na comunicação social e na sua emoção. MÉTODOS: a amostra foi constituída por 107 professores, sendo 86 com queixa e 21 sem queixa, selecionados em escolas da rede particular de ensino de Maceió-AL. Cada professor respondeu individualmente o protocolo Perfil Participação em Atividades Vocais na presença da pesquisadora, assinalando suas respostas em uma escala visual que varia de 0 a 10. O protocolo é composto por 28 questões com a presença integrada em cinco aspectos englobados para avaliar a qualidade de vida e o resultado de tratamentos vocais. O protocolo oferece, ainda, dois escores adicionais: pontuação de limitação nas atividades (PLA e de restrição de participação (PRP. RESULTADOS: na comparação dos grupos com e sem queixa vocal foram verificados que todos os resultados foram estatisticamente significantes (pPURPOSE: to analyze the vocal impact in the daily activities on high-school teachers. Correlate the finding of the auto-perception on the vocal problem with the following aspects: effects in the work, daily communication, social communication and, its emotion METHODS: the sample consisted of 107 teachers, 86 with and 21 with no complaint, selected from private teaching schools in Maceió-AL. Each teacher answered individually the Protocol for Voice Activity Participation Profile in the presence of the researcher, noting their responses on a visual scale ranging from 0 to 10. The protocol is composed of 28 questions with the presence integrated in five aspects to evaluate the quality of life and the result of vocal treatments. The protocol offers, still, two additional scores: punctuation of limitation in the activities (PLA and restriction of participation (PRP. RESULTS: comparing the groups with

  5. Nondestructive elemental analysis of coins using accelerator-based thermal neutrons

    International Nuclear Information System (INIS)

    Khairi, F.Z.; Aksoy, A.; Al-Haddad, M.N.

    2007-01-01

    The accelerator-based thermal-neutrons activation analysis setup at KFUPM has an adequate thermal -neutron flux that can be advantageously used for the elemental analysis of a variety of samples including archeological ones. The thermal neutrons are derived from the moderation of fast neutrons from the D (d, n) He reaction which produces fast 2.5 MeV neutrons. A maximum thermals flux of about 2.5x10 n/m-s was achieved. For the purpose of determining the suitability of the set up for the analysis of contemporary and ancient coins, we carried out a feasibility study by irradiating a selected number of Saudi Arabian coins dating from 1958 to 1987 in the thermal-neutron flux. The induced gamma-ray activities were then counted using a HP-GMX detector coupled to a PC-based data acquisition and analysis system. The elements that were determined in the coins were copper (75%), nickel (around 25%) and manganese (<0.5%). Calibration curves were also established for these elements. The determined concentrations are in agreement with the data published by the Standard Catalogue of World Coins. (author)

  6. Measurement of 65Zn in 5-yen coin present in the houses nearby JCO

    International Nuclear Information System (INIS)

    Kono, Masuchika; Koizumi, Yoshinobu

    2000-01-01

    In 1999, a critical accident occurred in Calder-Hall type power reactor of JCO for the first in Japan. This study aimed to estimate γ exposure dose utilizing a five-yen coin present in the houses nearby JCO at the time of accident. The coin, which is composed of Cu-Zn alloy is present every houses and its quality is well controlled by Ministry of Finance. In addition, Zn isotope ( 65 Zn) produced by neutron exposure has a long half-life (244.1 days) and emits γ ray with high energy of 1115.5 keV, which allows measurement at a low level radiation. So, five-yen coin was used as the subject. The exposure dose of inhabitant was estimated based on the activity on 5-yen coins collected from the houses at 13 points at different distances from JCO, which was determined by a low-level measurement system equipped with a pure-Ge semiconductor. The relationship between dose equivalent (mSv) and the distance from JCO was presented. At the time of JCO accident, the evacuation order was given to the inhabitants living within 300 m from the company. However, the present study indicated that the exposure dose was as high as 220 mSv at the site 100 m apart from JCO. Therefore, it is concluded that the inhabitants living in the area more than 350 m from JCO should also have taken refuge. (M.N.)

  7. Experimental investigation on cleaning of corroded ancient coins using a Nd:YAG laser

    Science.gov (United States)

    Zhu, Huazhong; Lu, Jian; Ni, Xiaowu; Shen, Zhonghua

    2017-05-01

    The objective of the work reported is to study experimentally on the removal of corrosion layer from the ancient coins using laser beam as the conservation tool. With the use of Q-switched Nd:YAG laser radiation at 1064 nm, dry laser cleaning, steam laser cleaning and chemical-assisted laser cleaning were used to find out a more suitable and efficient laser treatment for corrosion removal. Cleaning tests were performed on ancient Chinese coins. Experimental results shows that the dry laser cleaning was not successful at removing all types of corrosion crust. It was possible to remove the outer thicker layer of the corrosion products (typically known as patina), but failed on the thinner layer of cuprite. The steam laser cleaning could decrease the initial removal threshold and improve the removal efficiency especially for the oxidation with powdery structure. As for chemical-assisted laser treatment, the cleaning results demonstrate that the combination of laser and chemical reagent could provide a considerable improvement in corrosion removal compared with the conventional laser treatments. Most of the corrosion contaminant was stripped, even the cuprite layer. Moreover, no secondary pollution was formed on the cleaned surface. X-ray fluorescence was applied to determine the variation of composition of surface layer and bulk metal before and after the coins cleaned. It shows that all of the three laser treatments were efficient to reduce the chlorine concentration on the surface of the coins more than 75%.

  8. 76 FR 12225 - Authority To Conduct Research and Development on All Circulating Coins

    Science.gov (United States)

    2011-03-04

    ..., including independent research facilities or current or potential suppliers of the metallic material used in...) Factors relevant to the potential impact of any revisions to the composition of the material used in coin... currency handlers, armored-car operators, car wash operators, and American-owned manufacturers of...

  9. Identification of ancient silver-plated coins by means of neutron absorption

    International Nuclear Information System (INIS)

    Mancini, C.; Serafin, P.P.

    1976-01-01

    This paper deals with a non-destructive method (neutron absorption) for the identification of ancient silver-plated coins. The experimental equipment, easily transportable, makes use of a 1 μg 252 Cf neutron source. Results of measurements performed at the National Museum of Naples are reported. (author)

  10. The surface of 1-euro coins studied by X-ray photoelectron spectroscopy

    International Nuclear Information System (INIS)

    Gou, F.; Gleeson, M.A.; Villette, J.; Kleyn, S.E.F.; Kleyn, A.W.

    2004-01-01

    The two alloy surfaces (pill and ring) that are present on 1-euro coins have been studied by X-ray photoelectron spectroscopy (XPS). Comparison is made between coins from general circulation and coin surfaces that have been subjected to a variety of cleaning and oxidation treatments. The concentrations and possible oxidation states of the metals (nickel, copper and zinc) at the surface were derived from analysis of the 2p 3/2 core levels. The surface atomic ratios measured for the pill and the ring parts of the euro coins were compared to the official bulk ratios. This study shows a clear nickel enrichment of both pill and ring surfaces. Nickel at surface seems to be present mainly in hydroxide form although the chloride form cannot be excluded. A small concentration of zinc was present on the surface of the pill, even though it is not present in the bulk alloy. Evidence of both nickel and zinc surface enrichment is observed for the ring. No surface enrichment is observed for the atomically clean or oxidized alloy surfaces over a 60-h time scale

  11. Automatic system of production, transfer and processing of coin targets for the production of metallic radioisotopes

    Science.gov (United States)

    Pellicioli, M.; Ouadi, A.; Marchand, P.; Foehrenbacher, T.; Schuler, J.; Dick-Schuler, N.; Brasse, D.

    2017-05-01

    The work presented in this paper gathers three main technical developments aiming at 1) optimizing nuclide production by the mean of solid targets 2) automatically transferring coin targets from vault to hotcell without human intervention 3) processing target dilution and purification in hotcell automatically. This system has been installed on a ACSI TR24 cyclotron in Strasbourg France.

  12. 77 FR 61475 - Price for the 2012 Annual Uncirculated Dollar Coin Set

    Science.gov (United States)

    2012-10-09

    ... DEPARTMENT OF THE TREASURY United States Mint Price for the 2012 Annual Uncirculated Dollar Coin Set AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: Because of the recent increase in the market price of silver, the United States Mint is announcing a new price of $59.95...

  13. 31 CFR 101.4 - Extraction of gold bullion from the counterfeit coins.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Extraction of gold bullion from the... MITIGATION OF FORFEITURE OF COUNTERFEIT GOLD COINS § 101.4 Extraction of gold bullion from the counterfeit... Bureau of the Mint where, if economically feasible, the gold bullion will be extracted from the...

  14. 78 FR 25784 - Re-pricing of Several Silver Coin Products

    Science.gov (United States)

    2013-05-02

    ... DEPARTMENT OF THE TREASURY United States Mint Re-pricing of Several Silver Coin Products AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: Because of the recent decrease in the market price of silver, the United States Mint is lowering the price of several numismatic...

  15. 76 FR 17485 - Pricing for America the Beautiful Five Ounce Silver Bullion Coin Presentation Case

    Science.gov (United States)

    2011-03-29

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for America the Beautiful Five Ounce Silver Bullion Coin Presentation Case AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the America the Beautiful Five Ounce Silver...

  16. 77 FR 840 - Pricing for America the Beautiful Five Ounce Silver Uncirculated CoinsTM

    Science.gov (United States)

    2012-01-06

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for America the Beautiful Five Ounce Silver Uncirculated Coins TM AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the re-pricing of the America the Beautiful Five Ounce Silver...

  17. 76 FR 65563 - Pricing for America the Beautiful Five Ounce Silver Uncirculated CoinsTM

    Science.gov (United States)

    2011-10-21

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for America the Beautiful Five Ounce Silver Uncirculated Coins TM AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the re-pricing of the America the Beautiful Five Ounce Silver...

  18. Solving Classical Insight Problems without Aha! Experience: 9 Dot, 8 Coin, and Matchstick Arithmetic Problems

    Science.gov (United States)

    Danek, Amory H.; Wiley, Jennifer; Öllinger, Michael

    2016-01-01

    Insightful problem solving is a vital part of human thinking, yet very difficult to grasp. Traditionally, insight has been investigated by using a set of established "insight tasks," assuming that insight has taken place if these problems are solved. Instead of assuming that insight takes place during every solution of the 9 Dot, 8 Coin,…

  19. Does pizza prime coin? Perceptual priming in lexical decision and pronunciation.

    NARCIS (Netherlands)

    Pecher, D.; Zeelenberg, R.; Raaijmakers, J.G.W.

    1998-01-01

    In 6 experiments the authors investigated priming for perceptually related word pairs (i.e., words that refer to objects with the same shape such as pizza-coin), trying to replicate earlier findings by R. Schreuder et al (see record 1985-06198-001) while avoiding some of the methodological problems

  20. Parental restriction and children's diets. The chocolate coin and Easter egg experiments.

    Science.gov (United States)

    Ogden, Jane; Cordey, Phillipa; Cutler, Laura; Thomas, Hayley

    2013-02-01

    Two naturalistic experiments are reported exploring the impact of parental restriction on children's diets. For study 1, 53 parents gave 75 g of chocolate coins to their child over a weekend. For study 2, 86 parents were recruited prior to the 2 week Easter break when their children would be receiving chocolate Easter eggs. For both studies, parents were randomly allocated to either the non-restriction or restriction conditions and rated their child's preoccupation with the target food and other sweet foods (demanding and eating) at the start and end of the interventions. Perceived and actual food intake was assessed. Children in the restriction conditions consumed fewer chocolate coins and Easter eggs. All children showed decreased preoccupation with chocolate coins or Easter eggs over the course of the studies yet by the end the restriction group were more preoccupied with the target food. In contrast, all children showed an increased preoccupation with other sweet foods as the studies progressed which was greater in the non-restriction group for the chocolate coins study. Overall, restriction resulted in reduced intake but relative increased preoccupation with the food being restricted. Non-restriction resulted in a greater preoccupation with other sweet foods once the target foods had been consumed. Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.

  1. The origin and chronology of medieval silver coins based on the analysis of chemical composition

    Directory of Open Access Journals (Sweden)

    Pańczyk Ewa

    2015-09-01

    Full Text Available Medieval Central Europe coins - the Saxon coins, also called as the Otto and Adelheid denarii, as well as the Polish ones, the Władysław Herman and Bolesław Śmiały coins - were examined to determine their provenance and dating. Their attribution and chronology often constitute a serious problem for historians and numismatists. For hundreds of years, coins were in uncontrolled conditions and in variable environment. Destructed and inhomogeneous surface were the effect of corrosion processes. Electron microscopy with energy dispersive X-ray analysis (scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS, X-ray fluorescence (XRF analysis (energy dispersive X-ray fluorescence (EDXRF and total reflection X-ray fluorescence (TXRF, and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS were applied. The results of these investigations are significant for our knowledge of the history of Central European coinage, especially of Polish coinage

  2. The COIN Approach to Mexican Drug Cartels: Square Peg in a Round Hole

    Science.gov (United States)

    2011-10-28

    manual “has become a coffee -table staple in Washington,” even leading to the appearance of one of its drafters, LTC John Nagl, on The Daily Show with... obsession with COIN. One thing, however, seems clear: given the still-speculative nature of the narco- insurgency paradigm, neither we nor the Mexican

  3. Professor Wind i Deadline om Spitzenkandidaten

    DEFF Research Database (Denmark)

    2018-01-01

    Professor og centerleder, Marlene Wind, var fredag den 23. februar 2018 i DR2 Deadline for at snakke om proceduren bag udvælgelsen af en ny formand for Europa Kommissionen. Professer Wind forklarede blandt andet, hvordan Europa Parlamentet, siden Lisabon Traktaten i 2009, har fortolket en del af...... traktaten til, at det skal være det vindende parti ved EP-valget, som vælger Kommissionsformanden. Dette er kendt som Spitzenkandidaten-proceduren. Wind pointerede, at særligt tyskerne har den holdning til EU, at den primære legitimitet ligger hos Europa parlamentet, da det er det eneste direkte folkevalgte...... organ i EU. Wind påpegede, at statsoverhovederne har været meget skeptiske eller direkte imod proceduren, men at der er en stigende holdning til, at proceduren kan være med til at sikre borgerinddragelse i EU. Til dette sagde Wind; "Hvis man skal engangere borgerne ved det her valg, hvor stort set ingen...

  4. Memories of Professor Sugimoto and isotope separator

    International Nuclear Information System (INIS)

    Tanaka, Kazuhiro

    2013-01-01

    Usual magnetic isotope-separators select the particles with the same Z/A value which may include different nuclides. Identification of the isotope with the same Z/A value but different Z or A value is an universal requirement for nuclear physics experiments. If one knows, together with the A/Z value, the dE/dx or the range of the isotope in some energy absorber, which are the function of Z 2 /A, its nuclide can be specified. This idea can be realized by arranging proper energy-absorber at the focal point of magnetic analyzer. The author proposes another novel method in which two dipole-magnets are excited with some difference, and an energy absorber corresponding to that energy difference is situated between two magnets. It can also be devised so that the dispersion at the final focal-point depends only on the emission angle of the isotope at production. Professor Sugimoto recognized the significance of this scheme and proposed to employ it in the experiment at BEVATRON. The unbalanced two dipole-magnets method is employed at RIKEN and RCNP, Osaka University. The author's creative idea originated in Sugimoto Laboratory at Osaka University. (author)

  5. The application of LA-ICP-MS in the examination of the thin plating layers found in late Roman coins

    Energy Technology Data Exchange (ETDEWEB)

    Vlachou-Mogire, C. [Numismatic Museum, 12 El. Venizelou Avenue, 106 71 Athens (Greece)], E-mail: vlachou_mogire@yahoo.co.uk; Stern, B.; McDonnell, J.G. [Department of Archaeological Sciences, University of Bradford, Bradford BD7 1RD (United Kingdom)

    2007-12-15

    During the late Roman period the production of complex copper alloy (Cu-Sn-Pb-Ag) coins with a silvered surface, became common practice. Previous analyses of these coins did not solve key technological issues and in particular, the silvering process. Two methods have been suggested for the production of the thin plating layers in late Roman coins the dipping in molten silver chloride and the use of silvering pastes. However, there are questions about their use. More recent research showed that hot-dipping methods, such as the dipping in molten silver chloride, were not really suitable for mass production. Also, the earliest references to the use of silvering pastes dated to 17th century AD. A review of ancient sources and historic literature indicated silver amalgam plating as the possible method for the production of the plating in late Roman coins. Results derived from non-destructive LA-ICP-MS analysis have demonstrated, for the first time, the presence of Hg in the surface layers of these coins. The optimization of the method and the factors influenced the analyses results, are discussed. The examination of the coins by means of EPMA confirmed the ICP-MS results. The introduction of a new technique for the examination of plating layers, helped in the identification of amalgam silvering as the method used in the production of the coins.

  6. Editorial: A dedication to Professor Jan Evetts

    Science.gov (United States)

    Weber, Harald; Dew-Hughes, David; Campbell, Archie; Barber, Zoe; Somekh, Rob; Glowacki, Bartek

    2006-03-01

    A few days before the beginning of the 7th European Conference on Applied Superconductivity we learned that Professor Jan Evetts, a pioneer of superconductor research, a brilliant scientist, a wonderful person and a great personal friend, had passed away. We therefore decided to dedicate the 7th European Conference on Applied Superconductivity to the memory of Jan Evetts. The following citation is based on material provided by his former supervisor (D Dew-Hughes) and his closest co-workers in Cambridge. Professor Jan Edgar Evetts (1939-2005) Professor Jan Edgar Evetts (1939-2005) Jan Evetts passed away after losing his second battle with cancer on 24th August 2005. He made an outstanding series of contributions to the science of superconductivity and to the understanding of superconducting materials and was an indefatigable champion of the development of applications of superconductivity. The loss to the superconductivity community is incalculable, as attested by the many communications received from colleagues throughout the world. Jan was born on 31 March 1939, and attended the Dragon School in Oxford, and later Haileybury. He was awarded an exhibition to read Natural Sciences at Pembroke College, Cambridge. He entered the college in 1958 and took his BA degree in 1961. He then undertook a Certificate of Postgraduate Study in Physics under the supervision of Professor Neville Mott. He was the first student to undertake this newly-instituted course; the title of his thesis was `The Resistance of Transition Metals'. In 1962 he joined David Dew-Hughes' superconducting materials research group, along with Archie Campbell and Anant Narlikar. In fact it was Jan's enthusiasm for the proposed course of research that helped convince David that he should follow Professor Alan Cottrell's suggestion to apply metallurgical methodology to the study of the factors that controlled critical current density in the type II superconductors that were then under development for

  7. Some considerations on X-ray fluorescence use in museum measurements - The case of medieval silver coins

    International Nuclear Information System (INIS)

    Constantinescu, B.; Bugoi, R.; Oberlaender-Tarnoveanu, E.; Parvan, K.

    2005-01-01

    The purpose of this paper is to give a general layout for the potential applications of Energy-Dispersive X-Ray Fluorescence (ED-XRF) technique for ancient silver coin characterization, using in-situ (in museums) measurements. Examples concerning originality testing, provenance (mines, workshops) identification, counterfeits selection, historical studies (manufacturing technologies, commercial, military and political relationships) are given. Two study cases of medieval coins are described: German brakteaten pfennige and Moldavian groschen. Other analysis methods and their use in the study of medieval coins are illustrated with the example of Particle Induced X-ray Emission (PIXE) technique. (authors)

  8. WHEN THE PROVINCE TAKE CARE OF ITS OWN COIN SUPPLY. THE CASE OF THE TOWN OF DROBETA IN ROMAN DACIA

    Directory of Open Access Journals (Sweden)

    Cristian Anton Gazdac

    2015-12-01

    Full Text Available Using comparative analysis and the most recent coin site-finds publication from the Roman site of Drobeta in Roman Dacia (nowadays Drobeta-Turnu Severin, Romania, the present paper demonstrates that when a site from a province is closed to an official mint from another province (e.g. Viminacium in Moesia Superior the coin supply comes mainly from this mint. However, the recent coin evidence from the site of Drobeta proves that the official mint of Dacia, which produced the series of ‘PROVINCIA DACIA’ type was still a main supplier of Drobeta especially after AD 250.

  9. Special issue dedicated to Professor Johann M. Schepers

    Directory of Open Access Journals (Sweden)

    Gideon P De Bruin

    2006-10-01

    Full Text Available It is a great pleasure for me to have been associated with this special issue of the SA Journal of Industrial Psychology dedicated to Professor Johann M. Schepers. The purpose of the special issue is to honour Professor Schepers for his contributions to the development of Psychology and Industrial Psychology as empirical fields of study in South Africa. The contributors have worked with Professor Schepers as students or colleagues and share his academic interests. The articles reflect his areas of interest and employ analytic techniques taught and championed by him. We are grateful to Professor Schepers for his cooperation throughout this project. Thanks are due to all the contributors and referees.

  10. Professor Anne Khademian named National Academy of Public Administration Fellow

    OpenAIRE

    Chadwick, Heather Riley

    2009-01-01

    Anne Khademian, professor with Virginia Tech's Center for Public Administration and Policy, School of Public and International Affairs, at the Alexandria, Va., campus has been elected a National Academy of Public Administration (NAPA) Fellow.

  11. Afetividade entre professor e aluno no processo ensino-aprendizagem

    Directory of Open Access Journals (Sweden)

    Jéssica Simone Galdino Schaefer

    2015-06-01

    Full Text Available Este artigo tem como objetivo analisar as relações de afetividade entre professor e aluno no processo ensino-aprendizagem. Utiliza de metodologia com abordagem qualitativa, observação participante, e entrevistas semi-estruturadas. O lócus da pesquisa foi a Escola Municipal de Educação Básica Lizamara Aparecida Oliva de Almeida em Sinop, entre Fevereiro e Maio de 2014. Enquanto sujeitos, contou-se com professores e alunos do 3º ano do Ensino Fundamental. Dos resultados parciais, verificou-se que mesmo que a afetividade e a aprendizagem sejam reconhecidas teoricamente por Henri Wallon como elos fundamentais para o processo ensino-aprendizagem, ainda não é bem compreendido pelos sujeitos professores. Palavras-chave: psicologia educacional; afetividade; professores e alunos. 

  12. University Pedagogy for Assistant Professors at Aalborg University (Part 1)

    DEFF Research Database (Denmark)

    Kolmos, Anette; Krogh, Lone

    2003-01-01

    The article describes a course for assistant professors within the University Teacher Education at Aalborg University. The course focus is to develop knowledge, skills and methods from within the didactic, pedagogical, and learning theory-based fields....

  13. 26 CFR 509.115 - Visiting professors or teachers.

    Science.gov (United States)

    2010-04-01

    ...) REGULATIONS UNDER TAX CONVENTIONS SWITZERLAND General Income Tax § 509.115 Visiting professors or teachers. (a... not exceeding two years at any university, college, school, or other educational institution situated...

  14. Redox Pioneer: Professor Stuart A. Lipton

    Science.gov (United States)

    2013-01-01

    Abstract Professor Stuart A. Lipton Stuart A. Lipton, M.D., Ph.D. is recognized here as a Redox Pioneer because of his publication of four articles that have been cited more than 1000 times, and 96 reports which have been cited more than 100 times. In the redox field, Dr. Lipton is best known for his work on the regulation by S-nitrosylation of the NMDA-subtype of neuronal glutamate receptor, which provided early evidence for in situ regulation of protein activity by S-nitrosylation and a prototypic model of allosteric control by this post-translational modification. Over the past several years, Lipton's group has pioneered the discovery of aberrant protein nitrosylation that may contribute to a number of neurodegenerative disorders, including Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis (Lou Gehrig's disease). In particular, the phenotypic effects of rare genetic mutations may be understood to be enhanced or mimicked by nitrosative (and oxidative) modifications of cysteines and thereby help explain common sporadic forms of disease. Thus, Lipton has contributed in a major way to the understanding that nitrosative stress may result from modifications of specific proteins and may operate in conjunction with genetic mutation to create disease phenotype. Lipton (collaborating with Jonathan S. Stamler) has also employed the concept of targeted S-nitrosylation to produce novel neuroprotective drugs that act at allosteric sites in the NMDA receptor. Lipton has won a number of awards, including the Ernst Jung Prize in Medicine, and is an elected fellow of the AAAS. Antioxid. Redox Signal. 19, 757–764. PMID:23815466

  15. Ellen Gleditsch: Professor, radiochemist and mentor

    International Nuclear Information System (INIS)

    Lykknes, Annette

    2005-06-01

    This dissertation deals with Ellen Gleditsch and some important aspects of her career, as professor, radiochemist and mentor. As Professor Gleditsch supervised students, gave lectures, disseminated science, did research and administrative work; together with many others she participated in the shaping of a research university which developed during her career. She also experienced the daily life in an institute in which there was competition for both resources and positions, included the professorship she was finally granted after many set-backs. The Radiochemist Ellen Gleditsch worked and researched at Marie Curie's laboratory in Paris, and later at Bertram Boltwood's laboratory in New Haven and Stefan Meyer's Institute for Radium Research in Vienna, furthermore she planned and made efforts to establish a similar laboratory in Oslo. During her time in Paris and U.S.A. Gleditsch participated in important debates in the early period of radioactivity, including those on the determination of the radium-uranium ratio and the half-life of radium. In Norway she devoted her time to atomic weight determinations, age determinations, and radiogeological investigations. Research was all important part of Gleditsch's life and career. Gleditsch was also a Mentor in many respects; in tile international radioactivity community, as one of the first female academics and radiochcmists in Norway, for her many students, and this role seems also to have been hers within her family. In Paris she looked after students from all over the world to help alleviate their home sickness, at the University of Oslo she was known as the scientific mother to many; mentoring was among Gleditsch's main qualities. The story of Ellen Gleditsch opens for several perspectives that are discussed. 3 papers are included. In paper 1, ''Ellen Gleditsch: Pioneer Woman in Radiochemistry'', the story is about the young chemist Ellen Gleditsch, who arrived in Paris in 1907 and started cooperating with Marie Curie

  16. Seniorforsker Ole Hertel udnævnt til adjungeret professor

    DEFF Research Database (Denmark)

    Pedersen, Jens Christian

    2009-01-01

    Sektionsleder og seniorforsker Ole Hertel, Danmarks Miljøundersøgelser (DMU) ved Aarhus Universitet, er udnævnt til adjungeret professor ved Institut for Miljø, Samfund og Rumlig Forandring på Roskilde Universitet.......Sektionsleder og seniorforsker Ole Hertel, Danmarks Miljøundersøgelser (DMU) ved Aarhus Universitet, er udnævnt til adjungeret professor ved Institut for Miljø, Samfund og Rumlig Forandring på Roskilde Universitet....

  17. DISCOURSE SPACE OF THE LINGUOCULTURAL CHARACTER TYPE PROFESSOR

    Directory of Open Access Journals (Sweden)

    Lara Sinelnikova

    2014-10-01

    Full Text Available The article offers an analysis of the linguocultural character type professor taking into consideration both traditional set of signs and those transformations that indicate accumulation of evolutionary changes. The methodological base for the systematic description were the achievements of such areas of scientific knowledge as personology, linguopersonology and discourseology. The linguocultural character type (LCCT is a generalised image of persons, whose behaviour and value orientations influence culture, language and show social originality of the society. The peculiarity of the studied linguocultural character type is in its interrelation with the linguocultural character types intellectual and teacher as well as in the fact of the traditional connection with the concept elite. The exposure of such kind of multidimensional relations allowed to focus attention on the qualities of the LCCT professor that ensure its relative self-sufficiency. The sign of elitism and belonging to the intellectuals of the LCCT professor is asserted by the high social status recognised by the society, which is based on professionalism and compliance with moral principles. The axiological generality of the LCCT professor and teacher is ensured by the peculiarities of the modern pedagogical discourse with its typical image settings. One of the main features of the image of a professor is its belonging to the elite language person. The transformational processes in the contents of the LCCT professor are connected with the globalisation: including the international dimension in the evaluation of the professional activity, complication of the language environment, marketisation of the university sphere.

  18. CreditCoin: A Privacy-Preserving Blockchain-Based Incentive Announcement Network for Communications of Smart Vehicles

    KAUST Repository

    Li, Lun; Liu, Jiqiang; Cheng, Lichen; Qiu, Shuo; Wang, Wei; Zhang, Xiangliang; Zhang, Zonghua

    2018-01-01

    (i.e., users) to generate the signatures and to send announcements anonymously in the nonfully trusted environment. On the other hand, with Blockchain, CreditCoin motivates users with incentives to share traffic information. In addition, transactions

  19. Determination of Gold Traces in 4th Century B.C. Silver Coins By Neutron Activation Analysis

    International Nuclear Information System (INIS)

    Ronen, Y.; Kubani, G.

    2004-01-01

    A method based on non-destructive neutron activation analysis was developed for measuring traces of gold in silver. This method requires a very small neutron source and, in this study, it was Am-Be of 5μCi. With a small neutron source, the equipment is not expensive and radiation protection problems are reduced. Our method was applied to ancient silver coins from the 4th-3rd centuries B.C. These coins were obols minted in Gaza and Yehud coins minted in Jerusalem. It was found that there is gold in all of them. Their relative gold content was found to be between 7*10 -3 and 8.9*10 - 3 with a relative accuracy of less than 7%. The gold content in silver coins can serve as a ''finger prints' for the origin of the silver

  20. Forecasting the Student-Professor Matches That Result in Unusually Effective Teaching

    Science.gov (United States)

    Gross, Jennifer; Lakey, Brian; Lucas, Jessica L.; LaCross, Ryan; Plotkowski, Andrea R.; Winegard, Bo

    2015-01-01

    Background: Two important influences on students' evaluations of teaching are relationship and professor effects. Relationship effects reflect unique matches between students and professors such that some professors are unusually effective for some students, but not for others. Professor effects reflect inter-rater agreement that some professors…

  1. "They Are Weighted with Authority": Fat Female Professors in Academic and Popular Cultures

    Science.gov (United States)

    Fisanick, Christina

    2007-01-01

    The images of fat professors encountered in popular culture are few in number and negative in depiction. In this article, the author discusses on how will the professorial body affect the way in which students perceive the professor's teaching abilities. The author concludes that bias against fat professors, professors of color, and other…

  2. Analysis of medieval Serbian silver coins from XIV and XV century by means of wavelength-dispersive X-ray spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Gržetić, Ivan [University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade (Serbia); Orlić, Jovana, E-mail: jovanaorlic@chem.bg.ac.rs [Innovation Centre of Faculty of Chemistry, University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade (Serbia); Radić, Vesna [National Museum in Belgrade, Department of Numismatic, Trg Republike 1a, 11000 Belgrade (Serbia); Radić, Milica [Innovation Centre of Faculty of Chemistry, University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade (Serbia); Ilijević, Konstantin [University of Belgrade, Faculty of Chemistry, Studentski trg 12-16, 11000 Belgrade (Serbia)

    2016-01-01

    X-ray fluorescence (XRF) spectrometry is known as excellent nondestructive technique for analysis of artifacts, in our case, medieval numismatic coins. Collections of 30 silver coins, owned by National Museum in Belgrade, were investigated during our research. Coins from the historical period from 1389 to 1458 belong to the reign of two Serbian rulers, Stefan Lazarević and Đurđe Branković. The aim of this study was to determine elemental composition of silver coins and to characterize alloys from which the coins were minted. The dominant elements detected in all coins were Ag, Cu, Zn and Pb. In some coins Fe, Si and S were detected as well. Results from quantitative analysis shows that the content of Ag in all investigated silver coins exceed 90%, except in two coins that were assumed to be forged. The concentration of Cu ranged from 3% to 5%, and the contents of Zn and Pb varied around 1%. Characterization of coins provided us information about raw materials and employed metallurgical processes.

  3. Silver surface enrichment controlled by simultaneous RBS for reliable PIXE analysis of ancient coins

    International Nuclear Information System (INIS)

    Beck, L.; Alloin, E.; Berthier, C.; Reveillon, S.; Costa, V.

    2008-01-01

    Evidence of silver surface enrichment of ancient silver-copper coins has been pointed out in the past years. Surface enrichment can be fortuitous or intentional. In this paper, we have investigated the cleaning procedures usually performed after excavation or in museums. We have shown that chemicals or commercial products routinely used dissolve preferentially the copper phase and consequently contribute to the silver surface enrichment. As a result, surface analyses such as PIXE or XRF can be strongly affected by this effect. By using simultaneously RBS and PIXE, it is possible to check through the silver surface enrichment and then select the reliable measurements, characteristic of the bulk composition. Results on coins recently discovered and mechanically or chemically cleaned are presented

  4. Perforated coins from graves at the Viminacium necropolis of Više Grobalja

    Directory of Open Access Journals (Sweden)

    Vojvoda Mirjana D.

    2015-01-01

    Full Text Available A common problem that occurs when interpreting finds of perforated Roman coins is whether they had been perforated in Roman times or later. Hence, the specimens that originate from an undisturbed archaeological context, as is the case with finds from the Viminacium necropolis of Više Grobalja, are indispensable. A total of 47 perforated coins were discovered: 31 with a single and 16 with three perforations. The analysis of the context of the finds, in some specimens, allows the confident assertion that they had constituted a part of jewellery. [Projekat Ministarstva nauke Republike Srbije, br. 47018: IRS - Viminacium, Roman city and military legion camp - research of the material and non-material culture of inhabitants using the latest technologies of remote detection, geophysics, GIS, digitalisation and 3D visualisation

  5. Remote Education Using Web Conference System in a Company of Coin Parking Business

    Science.gov (United States)

    Yoshioka, Yoshio; Mito, Hiroyuki; Azuma, Kouji

    Maintenance jobs at coin parking places (CP) are very important for keeping trouble free operation. Such maintenance jobs include special inspection at the initiation of new CP and ordinal maintenance works. In order to level up the skill of maintenance people in the company, education of the basic knowlege of electricity, facility and maintenance skills are required. We made an original text for maintenance people, and practiced education by use of web conference system, because they are distributed in whole country, This paper describes a content of text on fundamental knowledge of electricity, facility of coin parking system and trouble experiences, and also a practice of remote education using web conference system. Problems of remote education which were found by practice and the future education plan of practical skill are also described.

  6. Synthesis of coin-like hollow carbon and performance as Pd catalyst support for methanol electrooxidation

    Energy Technology Data Exchange (ETDEWEB)

    Yuan, Dingsheng [Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632 (China); State Key Laboratories of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275 (China); Xu, Changwei; Liu, Yingliang; Tan, Shaozao [Department of Chemistry and Institute of Nanochemistry, Jinan University, Guangzhou 510632 (China); Wang, Xin [School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Wei, Zidong [School of Chemical Engineering, Chongqing University, Chongqing 400044 (China); Shen, Pei Kang [State Key Laboratories of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275 (China)

    2007-10-15

    The coin-like hollow carbon (CHC) has been synthesized by only using ethanol as the carbon source with a novel Mg/NiCl{sub 2} catalytic system via a facile solvothermal method for the first time. The CHC synthesized at optimized conditions shows an average thickness of less than 154 nm and the coin diameter of 1-3 {mu}m. The CHC is characterized by SEM, TEM, XRD and electrochemical techniques. Pd on CHC (denotes as Pd/CHC) electrocatalysts are prepared for methanol oxidation in alkaline media. The Pd/CHC electrocatalyst gives a mass activity of 2930 A g{sup -1} Pd for methanol oxidation against 870 A g{sup -1} Pd on Pd/C electrocatalyst. One main reason for the higher mass activity of the Pd/CHC is the higher electrochemical active surface area (EASA) of the Pd/CHC. (author)

  7. Determination of silver in ancient coins by X-ray fluorescence spectrometry

    International Nuclear Information System (INIS)

    Pairatana, C.

    1976-01-01

    45 coins of late Ayudhaya and Bangkok periods was analyzed quantitatively by x-ray fluorescence technique using radioisotopic sources Pm - 147/A1 and Am - 241. The fluorescence x-rays were detected by Lithium drifted silicon detector and 1024 channels pulse height analyzer. The procedure was laid a stress on non-destructive methods which could be utilized for analysing various kinds of antiquities and work of arts such as metals, alloys, pottery, ceramics, paper, textile, wood etc

  8. The Coins of Saray in the first half of the 660s AH / 1260s AD

    Directory of Open Access Journals (Sweden)

    P.N. Petrov

    2018-03-01

    Full Text Available After having long scrutinized the finds of 19 unusual, anonymous Juchid dirhams discovered in the vicinity of Saratov, the authors of this article are finally able to attribute these coins. One specimen bears the year of minting 663 AH/1264–1265 AD, i.e. the year when Berke reigned in the Juchid ulus. Another coin, connected with the issues of the same typological series, has the mint name of Saray, but lacks any tamgha. While tamghas are also absent on all the other dirhams, judging by their weights, the 19 coins represent three different denominations. The authors have no information regarding the finds of such coins in other regions of the Juchid ulus. The coins’ legends contain the issuer’s laqab – al-da‘i ila’l-huda nusrat al-dunya wa’l-din, which unequivocally confirms that this is a laqab of a ruler who converted to Islam. An analysis of these Saray dirhams from the vicinity of Saratov, struck during the reign of Berke, as well as the fact that the monetary circulation in the Juchid ulus in the thirteenth century was predominantly local, raised important questions not only concerning the location of Batu’s Saray and Berke’s Saray respectively, but also regarding how we should understand the toponym “Saray” in the second third of the thirteenth century. In this connection, it is not improbable that our current understanding of Saray as a particular city is incorrect or at least not uncontroversial. At the moment, in light of current research, it is clear that the mint of Saray was operating already in the 650s AH / 1250s AD.

  9. The analysis of volatility of gold coin price fluctuations in Iran using ARCH & VAR models

    Directory of Open Access Journals (Sweden)

    Younos Vakilolroaya

    2014-03-01

    Full Text Available The aim of this study is to investigate the changes in gold price and modeling of its return volatility and conditional variance model. The study gathers daily prices of gold coins as the dependent variable and the price of gold in world market, the price of oil in OPEC, exchange rate USD to IRR and index of Tehran Stock Exchange from March 2007 to July 2013 and using ARCH family models and VAR methods, the study analysis the data. The study first examines whether the data are stationary or not and then it reviews the household stability, Arch and Garch models. The proposed study investigates the causality among variables, selects different factors, which could be blamed of uncertainty in the coin return. The results indicate that the effect of sudden changes of standard deviation and after a 14-day period disappears and gold price goes back to its initial position. In addition, in this study we observe the so-called leverage effect in Iran’s Gold coin market, which means the good news leads to more volatility in futures market than bad news in an equal size. Finally, the result of analysis of variance implies that in the short-term, a large percentage change in uncertainty of the coin return is due to changes in the same factors and volatility of stock returns in the medium term, global gold output, oil price and exchange rate fluctuation to some extent will show the impact. In the long run, the effects of parameters are more evident.

  10. COINS: An innovative informatics and neuroimaging tool suite built for large heterogeneous datasets

    Directory of Open Access Journals (Sweden)

    Adam eScott

    2011-12-01

    Full Text Available The availability of well-characterized neuroimaging data with large numbers of subjects, especially for clinical populations, is critical to advancing our understanding of the healthy and diseased brain. Such data enables questions to be answered in a much more generalizable manner and also has the potential to yield solutions derived from novel methods that were conceived after the original studies' implementation. Though there is currently growing interest in data sharing, the neuroimaging community has been struggling for years with how to best encourage sharing data across brain imaging studies. With the advent of studies that are much more consistent across sites (e.g., resting fMRI, diffusion tensor imaging, and structural imaging the potential of pooling data across studies continues to gain momentum.At the Mind Research Network (MRN, we have developed the COllaborative Informatics and Neuroimaging Suite (COINS; http://coins.mrn.org to provide researchers with an information system based on an open-source model that includes web-based tools to manage studies, subjects, imaging, clinical data and other assessments. The system currently hosts data from 9 institutions, over 300 studies, over 14,000 subjects, and over 19,000 MRI, MEG, and EEG scan sessions in addition to more than 180,000 clinical assessments. In this paper we provide a description of COINS with comparison to a valuable and popular system known as XNAT. Although there are many similarities between COINS and other electronic data management systems, the differences that may concern researchers in the context of multi-site, multi-organizational data-sharing environments with intuitive ease of use and PHI security are emphasized as important attributes.

  11. A Coin for the Tsar: The Two Disruptive Sides of Cryptocurrency

    OpenAIRE

    Telley, Chris

    2018-01-01

    Captain Telley warns about the dangers of Russia getting into the cryptocurrency business in "A Coin for the Tsar: The Two Disruptive Sides of Cryptocurrency," written for the Small Wars Journal. As he states, "This paper examines the evolving power of cryptocurrency, describes threat behaviors enabled by the technology, and recommends some ways to counter threat activity in this nascent digital economic environment while preserving the possibilities for healthy innovation." Vladimir Putin...

  12. U.S. COIN Doctrine: Betting the Future on a Too Distant Past

    Science.gov (United States)

    2012-05-17

    achieving complete objectivity. Finally, ethical considerations place a limit on the social phenomena that can be studied as well as the methods used...positive and negative inputs from the insurgency and COIN systems. From a utilitarian standpoint, populations and the individuals that comprise them...wholesale business met with a similar fate in 1974 when the government took over that sector. Understandably, the public perceived the affront to

  13. Pengaruh Biaya Produksi Terhadap Laba Kotor pada PT. Gold Coin Indonesia Cabang Medan.

    OpenAIRE

    Sinaga, Dina Sinta Clara

    2011-01-01

    This study aims to determine the effect of production costs either simultaneously or partially to the gross profit at PT. Gold Coin Indonesia Medan Branch. This kind of research is associative. Population used in this study is the cost of production and profit for 36 months starting from January 2006 until December 2008. Sampling method used is saturated samples, which all serve as members of the sample population. Types of data is quantitative data. Data collection techniqu...

  14. New Silver Plated Coins of the Golden Horde Period Discovered in the Kurgan Region

    Directory of Open Access Journals (Sweden)

    Maslyuzhenko Denis N.

    2017-12-01

    Full Text Available The article considers the issue of the existence of monetary circulation in the southern part of Western Siberia in the Golden Horde period. In order to address the issue, the authors introduced into scientific discourse the numismatic material discovered in the Kurgan region by local residents in 2010–2016. It consisted of dangas which represented the primary means of payment in the Juchid state. A conclusion was made concerning the pulsating activity of monetary circulation in the region during the period in question. The first peak of activity occurred during the rule of Uzbek and Janibek. It was accounted for by the political and economic stability in the Horde during the reign of the leaders. The second peak took place in the second half of 14th century, which was determined on the basis of coins minted by khan Muhammad who reigned in the period of the Mamai Horde, discovered in the region. According to the authors, it was due to the preservation of economic relations which did not terminate as a result of the Great Troubles. The latest coins in the studied compilation were issues during the reign of Ulugh Muhammad and Dawlat Berdi. It should be noted that the dang minted by the last of the aforesaid khans was punctured. The authors suggest that this coin became an element of a pendant, which reflects the demonetization process observed as early as in 15th century.

  15. The Relevance Of The Preform Design In Coining Processes Of Cupronickel Alloy

    International Nuclear Information System (INIS)

    Buffa, G.; Fratini, L.; Micari, F.

    2007-01-01

    Coining is a forging process in which a metallic disk, characterized by a low volume-surface ratio, is deformed with the aim to impress 3D images on its three surfaces. Due to the large production volumes and, at the same time, to the high quality standards required to the final products in terms of final dimensions, tolerances and surface finishing, such closed-die, cold forging process requires a careful evaluation and choice of the proper operative parameters. In particular, along with technological parameters as the die velocity, die stroke and lubrication, which, in turn, contribute to affect the pressure values on the die surfaces, and thus the press choice, geometrical parameters as the side ring inner diameter and, above all, the preform geometry, strongly affect the quality of the obtained parts. In this paper, a 3D FEM model for coining processes is proposed, that is Lagrangian implicit, rigid-viscoplastic. The relationships between the obtained geometry and the starting preform shape is numerically investigated, allowing, through the analysis of the effective stresses, strain, and strain rate on the coin, as well as of the loads on the dies, to highlight the significance of the perform design in order to obtain a final product that satisfies the strict geometrical tolerances required. It is found that the best results on the final part are obtained with chamfered preform geometries, though larger values of force on the dies are observed

  16. On the authenticity of eight Reales 1730 Mexican silver coins by X-ray diffraction and by energy dispersion spectroscopy techniques

    International Nuclear Information System (INIS)

    Rojas-Rodriguez, I.; Herrera, A.; Vazquez-Lopez, C.; Apolo, R.; Gonzalez-Hernandez, J.; Hernandez-Landaverde, M.A.; Rodriguez, M.E.

    2004-01-01

    Ancient silver Mexican coins made during the years 1730-1734, were analyzed non-destructively by energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and by optical microscopy. Nine coins of denomination eight Reales were studied. These coins belong to the numismatic private collection in Mexico. Six elements (copper, aluminum, magnesium, silicon, chromium and silver) were determined quantitatively. The coins reveal a uniform Ag concentration. Some of the items are covered with patina. A strong positive correlation between Al and Cu content and also a strong negative correlation between S and Ag were determined. The weight of the coins varied between 26.1344 and 26.9913 g, which is a good indicator of the authenticity of the items. The purpose of this work is to investigate by precise means if some of the coins were falsified or if really all of them are authentic

  17. The I Professor Formation in the Wallonian approach.

    Science.gov (United States)

    Aranha, Ana Lúcia Batista; Mrech, Leny Magalhaes; Zacharias, Adriana Pereira Gonçalves; Figueredo, Luana Prado; Mendonça, Catarina Terumi Abe; Fernandes, Maria de Fátima Prado

    2015-12-01

    Objectives Analyze how teachers perceive the construction of their I Professor from the perspective of Wallon and learn about their everyday experiences in school in the condition of being self and other. Method Qualitative, with 13 participants from the Bachelor of Nursing Program. Data collection was carried out in 2013 using interviews that were subjected to thematic analysis. Results Three categories emerged: Construction of the I Professor; living daily life supported by oneself and the other; and the components for constructing the I Professor, highlighting consciousness and valuing of oneself and the other. Conclusion The teachers traveled a path that allowed them to recognize themselves in different movements of the internalization of the I.

  18. [The essence of Professor Wu Lian-Zhong's acupuncture manipulation].

    Science.gov (United States)

    Liu, Jing; Guo, Yi; Wu, Lian-Zhong

    2014-05-01

    The painless needle insertion technique, summarized by Professor WU Lian-zhong during his decades of acupuncture clinical practice is introduced in this article, which is characterized as soft, flexible, fast, plucking and activating antipathogenic qi. The Sancai (three layers) lifting and thrusting manipulation technique is adopted by Professor WU for getting the qi sensation. And features of 10 kinds of needling sensation such as soreness, numbness, heaviness, distension, pain, cold, hot, radiation, jumping and contracture are summarized. Finger force, amplitude, speed and time length are also taken as the basis of reinforcing and reducing manipulations. Moreover, examples are also given to explain the needling technique on some specific points which further embodies Professor WU's unique experiences and understandings on acupuncture.

  19. ATLANTIC and beyond: an interview with Professor Azfar Zaman.

    Science.gov (United States)

    Zaman, Azfar; Wu, Wing

    2015-01-01

    Professor Azfar Zaman speaks to Wing Wu, Commissioning Editor: Professor Azfar Zaman is a Consultant Interventional Cardiologist at Freeman Hospital and Professor of Cardiology at Newcastle University. Following graduation at Leeds Medical School, he completed postgraduate training in cardiology at regional centres in Leeds, London and Cardiff. Prior to his appointment in Newcastle upon Tyne, he was a Fulbright Scholar and British Heart Foundation International Fellow at Mount Sinai Medical Center, New York, USA. He is the Clinical Lead for Coronary Intervention and Director of the Cardiac Catheter Laboratories. In 2012, he was appointed Specialty Group Lead for Cardiovascular Research and has an interest in clinical research, with a particular interest in atherothrombosis in diabetes and clinical trials.

  20. Gender and teamwork: an analysis of professors' perspectives and practices

    Science.gov (United States)

    Beddoes, Kacey; Panther, Grace

    2018-05-01

    Teamwork is increasingly seen as an important component of engineering education programmes. Yet, prior research has shown that there are numerous ways in which teamwork is gendered, and can lead to negative experiences for women students. This article presents the first interview findings on professors' perspectives on gender and teamwork. Semi-structured interviews were conducted with 39 engineering professors to determine what and how they thought about gender in engineering and engineering education. For this article, the parts of the interviews about teamwork are analysed. We conclude that professors need tools to help them facilitate gender-inclusive teamwork, and those tools must address the beliefs that they already hold about teamwork. The findings raise questions about the adoption of evidence-based instructional practices and suggest current teamwork practices may exacerbate gender inequalities in engineering.

  1. [Professor Kazimierz Jaegermann--forensic pathologist--scientist--thinker].

    Science.gov (United States)

    Nasiłowski, Władysław

    2009-01-01

    Professor Kazimierz Jaegermann, a founder of the theory of medico-legal opinionating, passed away 20 years ago. Numerous specialists in forensic medicine and an ever increasing number of lawyers substantiate the importance and value of the creative thought and the entire research work of Professor Jaegermann that have been an inspiration of progress in forensic medicine and in the science of applied law. His unique ability to perform a scientific synthesis leading to recognizing forensic medicine as an applied bridging knowledge points to the eminently creative role played by Professor Jaegermann in development of forensic medicine. There is an urgent need to recall his research activities and to publish a complete collection of his articles and publications. With this idea in mind, I present below an article based on the text published in No. 1 of the Zeszyty Naukowe Katedry Medycyny Sadowej Slaskiej Akademii Medycznej in 1995.

  2. Faculty Agency in Applying for Promotion to Professor

    Directory of Open Access Journals (Sweden)

    Susan K. Gardner

    2017-02-01

    Full Text Available Aim/Purpose: In the United States, faculty who wish to pursue promotion to the rank of professor do so without clear guidance or structure. Even the timing of such a process is nebulous. As such, an individual engages in agentic action to pursue the rank. Background: This study examined the experiences of faculty members who chose to pursue the application process to be promoted to professor but were rejected or dissuaded. Methodology: Utilizing a case study of one institutional setting, we conducted 10 in-depth qualitative interviews. Contribution: Very little is known about the process of promotion to full professor in the U.S. and even less empirical research exists. This study advances knowledge of the process and the experiences of those undertaking it. Findings: We learned that cues from the social context greatly influenced these faculty members’ sense of agency.

  3. [Professor Frantisek Por MD and Professor Robert Klopstock MD, students at Budapest and Prague Faculties of Medicine].

    Science.gov (United States)

    Mydlík, M; Derzsiová, K

    2010-11-01

    Professor Frantisek Por MD and Professor Robert Klopstock MD were contemporaries, both born in 1899, one in Zvolen, the other in Dombovar, at the time of Austro-Hungarian Monarchy. Prof. Por attended the Faculty of Medicine in Budapest from 1918 to 1920, and Prof. Klopstock studied at the same place between 1917 and 1919. From 1920 until graduation on 6th February 1926, Prof. Por continued his studies at the German Faculty of Medicine, Charles University in Prague. Prof. Klopstock had to interrupt his studies in Budapest due to pulmonary tuberculosis; he received treatment at Tatranske Matliare where he befriended Franz Kafka. Later, upon Kafka's encouragement, he changed institutions and continued his studies at the German Faculty of Medicine, Charles University in Prague, where he graduated the first great go. It is very likely that, during their studies in Budapest and Prague, both professors met repeatedly, even though their life paths later separated. Following his graduation, Prof. Por practiced as an internist in Prague, later in Slovakia, and from 1945 in Kosice. In 1961, he was awarded the title of university professor of internal medicine at the Faculty of Medicine, Pavol Jozef Safarik University in Kosice, where he practiced until his death in 1980. Prof. Klopstock continued his studies in Kiel and Berlin. After his graduation in 1933, he practiced in Berlin as a surgeon and in 1938 left for USA. In 1962, he was awarded the title of university professor of pulmonary surgery in NewYork, where he died in 1972.

  4. Buena moneda y mala moneda en los hogares de Burgos en el siglo XVIII = Good coin and bat coin in the household of Burgos in the eighteenth century

    Directory of Open Access Journals (Sweden)

    Francisco José Sanz de la Higuera

    2014-07-01

    Full Text Available Resumen Merced a los inventarios de bienes de la ciudad de Burgos a lo largo del Setecientos, se accede a las disponibilidades de dinero en efectivo y a los tipos de monedas que los hogares atesoraban en el interior de sus viviendas. No en todos ellos hallamos liquidez monetaria. A la postre, la tipología del numerario diferenciaba, de manera notoria, a quienes, ya fuera al hilo de su óbito o en sus existencias cotidianas, eran poseedores de “buena” moneda –en plata y en oro– de aquellos que únicamente disponían de vellón, la “mala” moneda. Empero, los hogares acaparaban los metales “nobles” no sólo a través del numerario sino también en las cuberterías, en los relojes, en las alhajas y adornos personales, en algunos pertrechos religiosos, etcétera. La ley de Gresham, “La moneda buena expulsa a la mala”, se traducía en la práctica no sólo en la circulación habitual de la moneda de peor calidad cuanto en que los hogares menos afortunados disponían, cuando les era posible, de la moneda más modesta. La buena moneda era propiedad de los aristócratas y los privilegiados. Abstract With probate inventories in the city of Burgos during the eighteenth century, we gain access to the available cash and the types of coins hoarded in households. Not in all of them we find liquidity. Ultimately, type of cash made a noticeable difference between those who, close to their deaths or in their daily lives, had “good money –silver or gold– and those who only possessed fleece –the bad money. However, households hoarded “noble” metals not only through cash but also in cutlery, clocks, jewellery and personal ornaments, some religious supplies, and so on. Gresham’s law, “The good money drives out the bad”, was put into practice not only in the normal movement of poorer quality coin as but also in the fact that the less fortunate households when they could, possessed more modest currency. The coin was owned by

  5. Buena moneda y mala moneda en los hogares de Burgos en el siglo XVIII = Good coin and bat coin in the household of Burgos in the eighteenth century

    Directory of Open Access Journals (Sweden)

    Francisco José Sanz de la Higuera

    2014-07-01

    Full Text Available Merced a los inventarios de bienes de la ciudad de Burgos a lo largo del Setecientos, se accede a las disponibilidades de dinero en efectivo y a los tipos de monedas que los hogares atesoraban en el interior de sus viviendas. No en todos ellos hallamos liquidez monetaria. A la postre, la tipología del numerario diferenciaba, de manera notoria, a quienes, ya fuera al hilo de su óbito o en sus existencias cotidianas, eran poseedores de “buena” moneda –en plata y en oro– de aquellos que únicamente disponían de vellón, la “mala” moneda. Empero, los hogares acaparaban los metales “nobles” no sólo a través del numerario sino también en las cuberterías, en los relojes, en las alhajas y adornos personales, en algunos pertrechos religiosos, etcétera. La ley de Gresham, “La moneda buena expulsa a la mala”, se traducía en la práctica no sólo en la circulación habitual de la moneda de peor calidad cuanto en que los hogares menos afortunados disponían, cuando les era posible, de la moneda más modesta. La buena moneda era propiedad de los aristócratas y los privilegiados.With probate inventories in the city of Burgos during the eighteenth century, we gain access to the available cash and the types of coins hoarded in households. Not in all of them we find liquidity. Ultimately, type of cash made a noticeable difference between those who, close to their deaths or in their daily lives, had “good money –silver or gold– and those who only possessed fleece –the bad money. However, households hoarded “noble” metals not only through cash but also in cutlery, clocks, jewellery and personal ornaments, some religious supplies, and so on. Gresham’s law, “The good money drives out the bad”, was put into practice not only in the normal movement of poorer quality coin as but also in the fact that the less fortunate households when they could, possessed more modest currency. The coin was owned by aristocrats and

  6. Aspectos gerais da formação de professores

    Directory of Open Access Journals (Sweden)

    Edson do Carmo Inforsato

    1996-08-01

    Full Text Available Este artigo, ancorado em estudos recentes e antigos, mostra o afastamento dos cursos de formação de professores em relação aos elementos que compõem a prática profissional docente. Favorável a uma aproximação efetiva com o contexto das práticas de sala de aula, o autor defende a idéia de uma formação de professores atrelada aos problemas e necessidades da prática docente no ensino formal de 1º e 2º graus.

  7. [Effective acupoints for bulbar paralysis by professor GAO Weibin].

    Science.gov (United States)

    Kang, Lianru; Zheng, Shuang

    2016-04-01

    Professor GAO Weibin academically advocates, based on basic theory of TCM and theories of different schools, modern science technology should be used for the methods and principles of acupuncture and Chinese medicine for neuropathy, so as to explore and summarize the rules, characteristics and advantages of TCM for nervous system disease, especially bulbar paralysis. During the treatment of bulbar paralysis, professor GAO creatively proposes the effective acupuncture points such as Gongxue, Tunyan-1, Tunyan-2, Fayin, Tiyan and Zhifanliu from the aspects of neuroanatomy, and analyzes their anatomical structure and action mechanism.

  8. A formação do professor de biologia

    OpenAIRE

    Schlichting, Maria Cristina Rodrigues Maranhão

    1997-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias da Educação O estudo evidencia o tratamento dicotômico mantido na estrutura curricular dos cursos de formação do professor de biologia considerando ser essa prática responsável pelos preconceitos que levam à desvalorização da prática pedagógica. O estudo parte da análise da estrutura curricular e aprofunda-se com entrevistas que buscam levantar o posicionamento dos professores dos cursos de Ciências Biológi...

  9. Forecasting the student–professor matches that result in unusually effective teaching

    Science.gov (United States)

    Gross, Jennifer; Lakey, Brian; Lucas, Jessica L; LaCross, Ryan; R Plotkowski, Andrea; Winegard, Bo

    2015-01-01

    Background Two important influences on students' evaluations of teaching are relationship and professor effects. Relationship effects reflect unique matches between students and professors such that some professors are unusually effective for some students, but not for others. Professor effects reflect inter-rater agreement that some professors are more effective than others, on average across students. Aims We attempted to forecast students' evaluations of live lectures from brief, video-recorded teaching trailers. Sample Participants were 145 college students (74% female) enrolled in introductory psychology courses at a public university in the Great Lakes region of the United States. Methods Students viewed trailers early in the semester and attended live lectures months later. Because subgroups of students viewed the same professors, statistical analyses could isolate professor and relationship effects. Results Evaluations were influenced strongly by relationship and professor effects, and students' evaluations of live lectures could be forecasted from students' evaluations of teaching trailers. That is, we could forecast the individual students who would respond unusually well to a specific professor (relationship effects). We could also forecast which professors elicited better evaluations in live lectures, on average across students (professor effects). Professors who elicited unusually good evaluations in some students also elicited better memory for lectures in those students. Conclusions It appears possible to forecast relationship and professor effects on teaching evaluations by presenting brief teaching trailers to students. Thus, it might be possible to develop online recommender systems to help match students and professors so that unusually effective teaching emerges. PMID:24953773

  10. Perda da voz em professores e não professores Voice loss in teachers and non-teachers

    Directory of Open Access Journals (Sweden)

    Kelly Park

    2009-01-01

    Full Text Available OBJETIVO: Verificar a percepção de professores e não-professores sobre as implicações de uma eventual perda de voz. MÉTODOS: Participaram 205 indivíduos sendo 105 professores e 100 não professores entre 23 a 65 anos, 106 mulheres e 99 homens. Foi aplicado um questionário contendo quatro perguntas referentes a uma eventual perda de visão, audição, voz e deambulação e o grau de impacto inferido (de 0 a 4. RESULTADOS: Para o grupo de professores, não enxergar gerou o maior impacto negativo (média de 3,8, seguido por não andar (média de 3,7, não ter voz (média de 3,7 e não ouvir (média de 3,6. Para o grupo de não-professores, não enxergar também gerou o maior impacto negativo (média de 3,4, seguido por não andar (média de 3,0; não ouvir (média de 2,2 e não ter voz (média de 2,0. Em relação ao maior impacto de uma eventual perda da voz, professores indicaram prejuízos no trabalho, relacionamento social e atividades rotineiras e, no grupo de não professores, nas atividades rotineiras, trabalho, relacionamento social e manifestações das emoções. CONCLUSÕES: Os professores valorizam sua voz de modo diverso dos não-professores e ambos os grupos avaliam a perda da voz como algo que não acarreta consequências negativas. Apesar de o professor perceber mais o impacto de um eventual problema de voz do que o não-professor, os sentimentos em relação à perda da voz foram muito semelhantes nos dois grupos.PURPOSE: To investigate teachers' and non-teachers' perception regarding the implications of an eventual loss of voice. METHODS: Participated in the study 205 individuals (106 women and 99 men, 105 teachers and 100 non-teachers, with ages varying from 23 to 65 years old. The participants were asked to answer a questionnaire with four questions regarding an eventual loss of vision, hearing, voice and deambulation, and the inferred impact degree (from 0 to 4. RESULTS: For the teachers group, not being able to see

  11. Some metallurgical aspects of ancient silver coins discovered in romania (original and imitations) - provenance, destination and commercial networks

    International Nuclear Information System (INIS)

    Constantinescu, Bogdan; Cojocaru, Viorel; Bugoi, Roxana

    2007-01-01

    The analyses of source materials combined with analyses of archaeological objects could distinguish from pieces produced in different regions and periods. For coins, chemical differences that occur during preparation of alloys will affect the elemental composition and could be used for the identification of technologies and workshops and also to distinguish between originals and counterfeits. We illustrate with the case of Geto-Dacian coins (Thassos and Macedonian - Phillip II, Alexander the Greek and Phillip III 'barbarized' tetradrachms) and with Greek Apollonia and Dyrrhachium silver drachms emitted by these old cities for Pompejus during the First Roman Civil War between Julius Caesar and Pompejus, coins found on the actual territory of Romania (ancient Dacia), probably used as bursaries to pay the Dacian mercenaries allied with Pompejus. To analyze the chemical composition of these coins, we used two methods: Am-241 and Pu-238 gamma sources based X-Ray Fluorescence (XRF) and in vacuum 3 MeV protons Particle Induced X-ray Emission (PIXE). Some special measurements on the edge of some coins (to identify plated exemplaires) were done using the ATOMKI Debrecen Van de Graaf 2 MeV protons microprobe, in the frame of European Action COST G1. Concerning the Geto-Dacian coins, we observed: - There is a reduction of the fineness in time that is specific to almost every coin issue. - Tin concentration in coins increased in time; at the beginning of the coinage (250 - 150 B.C.) this was more or less proportionally to copper. This could suggest that bronze was used in alloying silver coins instead of copper. A very high correlation is not expected because the ratio Sn/Cu in ancient bronzes is far to be a constant. A value of the Cu/Sn ratio close to 1 is not surprising because such objects were common in antiquity. In the last issues (150-50 B.C.) seems that Sn replaced partially Cu. - It seems that tin alloying appeared first time in Transylvania around 150 BC and then

  12. A Group Interview about Publishing with Professor Jack Zipes

    Directory of Open Access Journals (Sweden)

    Emma Louise Parfitt

    2016-10-01

    Full Text Available The conversation piece is the product of a group interview with Professor Jack Zipes and provides useful insights about publishing for early career researchers across disciplines. Based on his wider experiences as academic and writer, Professor Zipes answered questions from PhD researchers about: writing books, monographs and edited collections; turning a PhD thesis into a monograph; choosing and approaching publishers; and the advantages of editing books and translations. It presents some general advice for writing and publishing aimed at postgraduate students. Professor Zipes is an Emeritus Professor at the University of Minnesota Twin Cities, United States, a world expert on fairy tales and storytelling highlighting the social and historical dimensions of them. Zipes has forty years of experience publishing academic and mass-market books, editing anthologies, and translating work from French, German and Italian. His best known books are Breaking the Magic Spell (1979, Fairy Tales and the Art of Subversion (1983, The Irresistible Fairy Tale: The Cultural and Social History of a Genre (2012, and The Original Folk and Fairy Tales of the Brothers Grimm (2014.

  13. "Dear Professor: This Is What I Want You to Know."

    Science.gov (United States)

    Workman, Brooke

    1986-01-01

    Describes high school students' letters written to help their teacher interpret youth culture to college professors at an upcoming seminar. Essays reflected four themes: (1) a search for family, (2) identity problems and loneliness, (3) living with rapid change, and (4) fear of failure, especially in college. (2 references) (MLH)

  14. Kant as a Professor: Some Lessons for Today's Intellectuals ...

    African Journals Online (AJOL)

    The thoughts of every great philosopher is measured and represented by the history of his social background. It is indeed, more appropriate particularly in the case of a great philosopher like Immanuel Kant to single out for special recognition the outstanding characteristics of his early life on his career as a professor of ...

  15. The rotor theories by Professor Joukowsky: Vortex theories

    DEFF Research Database (Denmark)

    Okulov, Valery L.; Sørensen, Jens Nørkær; Wood, David H.

    2015-01-01

    This is the second of two articles with the main, and largely self-explanatory, title "Rotor theories by Professor Joukowsky". This article considers rotors with finite number of blades and is subtitled "Vortex theories". The first article with subtitle "Momentum theories", assessed the starring...

  16. The Education of an English Professor: The Biographical Narrative

    Science.gov (United States)

    González Valencia, Heriberto; Enríquez, Jakeline Amparo Villota; Ramos Acosta, Lizeth

    2018-01-01

    This article is the result of a qualitative research following the characteristics of hermeneutical research aims to understand the training process of the English university professor, taking into account factors that affect and surround the social, economic, and cultural environment; in which the experience and the story of life, shape the…

  17. Professor: A motorized field-based phenotyping cart

    Science.gov (United States)

    An easy-to-customize, low-cost, low disturbance, motorized proximal sensing cart for field-based high-throughput phenotyping is described. General dimensions, motor specifications, and a remote operation application are given. The cart, named Professor, supports mounting multiple proximal sensors an...

  18. Professor Age and Gender Affect Student Perceptions and Grades

    Science.gov (United States)

    Joye, Shauna W.; Wilson, Janie H.

    2015-01-01

    Student evaluations provide rich information about teaching performance, but a number of factors beyond teacher effectiveness influence student evaluations. In this study we examined the effects of professor gender and perceived age on ratings of effectiveness and rapport as well as academic performance. We also asked students to rate professor…

  19. Professor Rastislav Dzúrik: the Man and the Scientist.

    Science.gov (United States)

    Derzsiová, Katarina; Mydlík, Miroslav

    2016-02-01

    Rastislav Dzrik, finished his medical study at the Medical School of Comenius University in Bratislava in 1953. After graduation he began to work at the Institute of chemistry and biochemistry of the Medical School and in 1957 he continued working at the IIIrd Internal Clinic of this faculty, which became later the base of "Internal School of Professor T. R. Niederland" with biochemical focusing. In the year 1967 ProfessorDzrik in cooperation with ProfessorJan Brod founded the Nephrological Section of the Slovak Internal Society and then the postgraduate scientific-research activity in nephrology began. The main topics of his scientific activity, in which he received many priority results, were: Isolation and characteristic of inhibitor of glucose utilisation and of inhibitor of renal gluconeogenesis; Effect of "middle molecular substances, especially in the development of renal insufficiency; Isolation and identification of hippurate and pseudouridine. His publishing activity was manifested in more than 500 scientific papers, several monographs and many chapters in various textbooks and manuals of internal medicine and clinical biochemistry, and more than 1,000 citations. The most important success of Professor Dzrik was the textbook "Nephrology which was published in 2004 and he was its main editor. Rastislav Dzriks impact on the field of Nephrology in Slovakia was manifold. It included his complex work of clinical nephrology, his pedagogical activities, and last but not least his excellent organizing abilities.

  20. The Effect of Professor's Attractiveness on Distance Learning Students

    Science.gov (United States)

    Liu, Jeanny; Tomasi, Stella D.

    2015-01-01

    Technology enabled learning is becoming more popular and pervasive in education. While the effectiveness of distance learning versus traditional classroom education is strongly debated, human factors such as students' perception of their professors can influence their desire to learn. This research examines the perceptual effect of attractive…

  1. Professor Oberth and Dr. von Braun at ARS Banquet

    Science.gov (United States)

    1961-01-01

    Dr. Wernher von Braun holds the coveted Hermarn Oberth award presented to him by Professor Oberth during the banquet hosted by the Alabama Section of the American Rocket Society (ARS), on October 19, 1961. The Oberth award was given for outstanding technical contributions to the field of astronautics or for the promotion and advancement of astronautical sciences.

  2. The benefits of being economics professor A (and not Z)

    NARCIS (Netherlands)

    van Praag, C.M.; van Praag, B.M.S.

    2007-01-01

    Alphabetic name ordering on multi-authored academic papers, which is the convention in the economics discipline and various other disciplines, is to the advantage of people whose last name initials are placed early in the alphabet. As it turns out, Professor A, who has been a first author more often

  3. Professor Lisa Aranson on JA Green (a pioonier artist photographer ...

    African Journals Online (AJOL)

    Jonathan Adagogo Green's photographic and artistic contributions working in his countryside, the Niger Delta of Nigeria is reviewed by Professor Lisa Aranson. Aranson in a public lecture presentation on the stand-point of art history thinks of J.A. Green as having operated in two worlds of which he is said to have initiated in ...

  4. Teaching the College "Nones": Christian Privilege and the Religion Professor

    Science.gov (United States)

    Riswold, Caryn D.

    2015-01-01

    Working with undergraduate students invites teachers into relationship and conversation with young people at a time when they are emerging as adults and forming their identities. Faith is one area of identity formation often attended to by scholars, college professors, and their institutions. But within that, little attention has been paid to…

  5. An Examination of Assistant Professors' Project Management Practices

    Science.gov (United States)

    Alpert, Shannon Atkinson; Hartshorne, Richard

    2013-01-01

    Purpose: The purpose of this research was to identify factors that influence the use of project management in higher education research projects by investigating the project management practices of assistant professors. Design/methodology/approach: Using a grounded theory approach that included in-depth, semi-structured interviews with 22…

  6. Burnout Syndrome and Self-Efficacy Beliefs in Professors

    Science.gov (United States)

    García Padilla, Arlington Antonio; Escorcia Bonivento, Carla Vanessa; Perez Suarez, Blinis Sat

    2017-01-01

    The presence of the Burnout syndrome in professors may be regarded as a deterioration of their mental health with negative impacts on their job performance. It is known that teachers develop different activities in the areas of teaching, outreach and research. This study aims to analyze the relationship between the Burnout syndrome and…

  7. Dilemmas of a Newly Recruited Academic Qualified Professor: A Case

    Science.gov (United States)

    Agrawal, Anand

    2015-01-01

    This case describes the situation of a newly recruited academic professor who volunteered to teach a course on Research Methods to first-term MBA students in a practitioner-oriented case method Business School. Research Methods is a unique course due to its relevance not only in business but also across all graduate programs. Instructional and…

  8. "Women in Science" with Professor Jocelyn Bell Burnell

    Indian Academy of Sciences (India)

    Prof. Dame Jocelyn Bell Burnell is currently a visiting Professor at the. University of Oxford UK and a Fellow of Mansfield College. In a career spanning over four decades, she has made outstanding contributions to Astronomy and the public understanding of Science. As a Ph.D student in Cambridge. University she was ...

  9. Why Don't All Professors Use Computers?

    Science.gov (United States)

    Drew, David Eli

    1989-01-01

    Discusses the adoption of computer technology at universities and examines reasons why some professors don't use computers. Topics discussed include computer applications, including artificial intelligence, social science research, statistical analysis, and cooperative research; appropriateness of the technology for the task; the Computer Aptitude…

  10. The Professor as Intern: Approaches to Teaching Advertising Creativity.

    Science.gov (United States)

    Schamber, Linda

    Drawing upon the experiences of a participant in the Visiting Professor Program sponsored by the Advertising Education Foundation of the American Advertising Federation and the American Academy of Advertising, this paper discusses the advantages such programs can have for both the host company and the participant. The first section of the paper…

  11. Ten Things Every Professor Should Know about Assessment

    Science.gov (United States)

    Wolf, Kenneth; Dunlap, Joanna; Stevens, Ellen

    2012-01-01

    This article describes ten key assessment practices for advancing student learning that all professors should be familiar with and strategically incorporate in their classrooms and programs. Each practice or concept is explained with examples and guidance for putting it into practice. The ten are: learning outcomes, performance assessments,…

  12. Virginia Tech Wildlife Professor Helping To Save Florida Panther

    OpenAIRE

    Davis, Lynn

    2003-01-01

    With few Florida panthers now in existence, Mike Vaughan, Virginia Tech professor of wildlife and sciences in the College of Natural Resources, has been appointed to serve on the Florida Panther Scientific Review Team (SRT). Vaughan and other SRT members have made several trips to Naples, Fla., to interview state and federal biologists directly involved with the recovery of the Florida panther.

  13. How Not to Lose Face on Facebook, for Professors

    Science.gov (United States)

    Young, Jeffrey R.

    2009-01-01

    For years college administrators have warned students to watch their step in online social realms, noting that sharing too much could hurt them later on if future employees saw their drunken party pictures or boorish writings. Now that professors and administrators are catching Facebook fever, they should heed their own advice. The author…

  14. Tribute to the legend Mr. Veterinary Public Health, Professor James ...

    African Journals Online (AJOL)

    The author was also destined during his Sabbatical Leave to have an interactive interview session with Prof James Steele after attending the 20th Annual James Steele lecture/ 99th birthday Dinner of Professor James Steele 4th and 6th April 2012 at the Texas School of Public Health, Houston, Texas, USA. The interview ...

  15. "Friending" Professors, Parents and Bosses: A Facebook Connection Conundrum

    Science.gov (United States)

    Karl, Katherine A.; Peluchette, Joy V.

    2011-01-01

    The ever-growing popularity of Facebook has led some educators to ponder what role social networking might have in education. The authors examined student reactions to friend requests from people outside their regular network of friends including professors, parents, and employers. We found students have the most positive reactions to friend…

  16. Humor and the Emeritus Professor: An Interview with Gene Roth

    Science.gov (United States)

    Vivona, Brian

    2015-01-01

    This essay is a compilation of several conversations with Dr. Gene Roth, Distinguished Teaching Professor Emeritus at Northern Illinois University. Dr. Roth is past President of the Academy of Human Resource Development, and although he is well known for his efforts in bringing humor into the field of HRD, he is not the same Gene Roth that played…

  17. Understanding the Motivation and Transformation of White Culturally Responsive Professors

    Science.gov (United States)

    Jenkins, China; Alfred, Mary

    2018-01-01

    The purpose of this study was to examine the motivation for White professors in higher education to become culturally inclusive in their teaching practices and the transformational experiences that created this motivation and shaped their development. The findings revealed personal convictions that centred on moral obligations towards teaching was…

  18. Häbi, professor, teil on Gefilus kapis / Eve Kruuse

    Index Scriptorium Estoniae

    Kruuse, Eve,d1959-

    2008-01-01

    Tartu Ülikooli professor Marika Mikelsaar võitis läinud kuul koos kolleegidega (Tiiu Kullisaar, Epp Songisepp, Hedi Annuk ja Mihkel Zilmer) Soulis ülemaailmse naisleiutajate konkursil ME-3 bakteri avastamise ja probiootikuks arendamise eest kuldmedali

  19. The Life of the Mind: A Tribute to Three Professors.

    Science.gov (United States)

    Yamamoto, Kaoru

    2000-01-01

    This speech by a distinguished scholar in educational psychology recounts, with appreciation, his educational experiences under three distinguished professors: Toshio Maki, his undergraduate thesis supervisor in Japan; E. Paul Torrance, the prominent educational psychologist; and C. Gilbert Wrenn, his doctoral advisor. (DB)

  20. University Professors and Teaching Ethics: Conceptualizations and Expectations

    Science.gov (United States)

    Dean, Kathy Lund; Beggs, Jeri Mullins

    2006-01-01

    After the spectacular ethical breaches in corporate America emerged, business school professors were singled out as having been negligent in teaching ethical standards. This exploratory study asked business school faculty about teaching ethics, including conceptualizations of ethics in a teaching context and opinions of the extent to which…

  1. Florida Tech professor gets three-year grant

    CERN Multimedia

    2003-01-01

    "Dr. Marc Baarmand, Florida Tech associate professor of physics, has received a three-year grant from the U.S. Department of Energy's Division of High Energy Physics, to conduct research with the Compact Muon Solenoid experiment" (1/3 page).

  2. The other side of the coin: Oxytocin decreases the adherence to fairness norms

    Directory of Open Access Journals (Sweden)

    Sina eRadke

    2012-06-01

    Full Text Available Oxytocin has been implicated in prosocial behaviors such as trust and generosity. Yet, these effects appear to strongly depend on characteristics of the situation and the people with whom we interact or make decisions. Norms and rules can facilitate and guide our actions, with fairness being a particularly salient and fundamental norm. The current study investigated the effects of intranasal oxytocin administration on fairness considerations in social decision-making in a double‐blind, placebo‐controlled within‐subject design. After having received 24 IU of oxytocin or placebo, participants completed a one‐shot Dictator Game and played the role of the responder in a modified version of the Ultimatum Game, in which an unfair offer of 8 coins for the proposer and 2 coins for the responder is paired with either a fair‐ (5:5 or no‐alternative (8:2. Rejection rates were higher when a fair alternative had been available than when there was no alternative to an unfair offer. Importantly, oxytocin did not de- or increase rejection rates overall, but reduced the sensitivity to contextual fairness, i.e. the context of alternatives in which an offer was made. As dictators, participants allocated less coins to the recipient when given oxytocin than when given placebo, indicating a decline in generosity. These results suggest that oxytocin decreases the adherence to fairness norms in social settings where others are likely to be perceived as not belonging to one’s ingroup. While our findings do not support the prosocial conception of oxytocin, they corroborate recent ideas that the effects of oxytocin are more nuanced than assumed in the past.

  3. X-ray fluorescence analysis of medieval gold coins and jewellery

    International Nuclear Information System (INIS)

    Sandor, Zs.; Gresits, I.

    2003-01-01

    A quantitative evaluation method was elaborated to determine the gold, silver and copper concentration of high gold content objects in a non-destructive way. The spectrum evaluation method rules out the effect of the differences in size, shape and surface. A long measuring time allows qualitative analysis of the trace elements: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Cd, In and Zn. Using this method, about 200 golden coins and jewellery from the 10th-15th century Hungary and Byzantium were analyzed. Some of the results are presented here. (author)

  4. METAL DELM - metal avrelianis contribution to the study of mining coins and anonymous quadrantes

    Directory of Open Access Journals (Sweden)

    Vojvoda Mirjana D.

    2016-01-01

    Full Text Available In the course of rescue archaeological investigations at the Viminacium necropolis of Vi{e Grobalja in 1984, one anonymous quadrans of the VIII Apollo group was discovered (cat. 1. It was discovered in trench 63 in the immediate vicinity of a grave with an inhumation (G 343 that, besides two pottery vessels, also yielded as grave offerings one as of Faustina the Elder, minted after her death, in AD 141. Other finds presented here are four specimens of Roman mining coins from the private collection of Petar Fajfri} from [abac (cat. 2-5. All specimens come from the well known site of Duge Njive in the area of the village of Banatsko Polje (Bogati} borough where, by all appearances, are the remains of a vicus or smaller settlement. Five specimens of mining coins from that site have already been published. Both mining coins and anonymous quadrantes represent, in general, rare types of numismatic finds. Nine anonymous quadrantes are known so far from the territory of Serbia (Table 1 and the provenance is known for three specimens from the region of Guberevac-Babe (Kosmaj, housed in the National Museum in Belgrade. All three belong to the Minerva group with an owl facing to the right represented on the reverse. For two more anonymous quadrantes the place of discovery is known: one specimen comes from Singidunum and belongs to the Mercury group and the other that was found at Viminacium and is the subject of this paper is of the Apollo group. There are four more specimens from unknown sites for which it is assumed that they come from the Upper Moesia territory. Two of them are from the Vajfert collection and two from the Kovačević collection in the National Museum in Belgrade, There has, however, been a somewhat greater number (38 of Roman mining coins discovered in Serbia (Table 1. We know the finding locations of 25 of them: from the Kosmaj area (Babe, Guberevac and Stojnik, the Ibar valley (from the vicinity of Trepča and So~anica, Ritopek

  5. Communications and Informational Technologies: professional preparation of the Informatics professor

    Directory of Open Access Journals (Sweden)

    Adrian Robaina Valdés

    2017-09-01

    Full Text Available The development of the society it is sign by the development of the techniques and the science that has challenges the educational system in the formation of the new generation. The Cuban Educational politics had defined the social mission to each subsystem of education, in the particular case of the professional polytechnic education, belongs to the professors of Informatics, the accomplish of this mission, develop an important role in the educational use of the communication and informational technologies that requires and an adequate professional preparation. The aim of this article is to based form the theoretical and methodological point, the process of the professional preparation of the professors of informatics in the technical schools while they apply the communication and informational technologies, the theorical bases offered the historical past and tendencies of the professional preparation while they apply the communication and information technologies, the educative use of information technologies in the pedagogical process and the theoretical support in this process, using revision methods bibliography and systematizing . We may say that the research work concludes that the preparation of the professors had passed for different stages that had point to the need of the formation of professor to give answers to the introduction of the informatics subject at school, using different ways, the postgraduate updates and all the variety of ways to upgrade the professors will use. Form the educative point of view a part from the study as a subject must be use as an intermediate in the pedagogical process, also, to determine the characteristic that distinguish the professional preparation process.

  6. Refletindo sobre a relação professor-aluno em um grupo de professores do Esino Fundamental

    Directory of Open Access Journals (Sweden)

    Antônio dos Santos Andrade

    1999-06-01

    Full Text Available A partir das concepções de Donald Schön sobre a formação do professor como prático reflexivo, os princípios de trabalho com pequenos grupos, baseados nas concepções de J. L Moreno, foram utilizados com o objetivo de facilitar o processo de reflexão sobre suas práticas de sala de aula, com seis professores do Ensino Fundamental. Foram realizados nove encontros de 90 a 120 minutos de duração. Nas discussões, os casos dos alunos mais problemáticos quanto ao seu comportamento foram trazidos pelos professores e analisados pelo grupo a luz das concepções da Pragmática da Comunicação Humana. Como resultado destas discussões, os professores foram levados a considerar os aspectos mais latentes, e portanto significantes, de suas relações com os alunos. Estas reflexões conduziram a uma "resignificação" das mesmas, com efeitos surpreendentes sobre os comportamentos dos alunos.

  7. Maury Nussbaum reappointed as Hal G. Prillaman Professor Fellow in Industrial and Systems Engineering

    OpenAIRE

    Owczarski, Mark

    2010-01-01

    Maury Nussbaum, professor of industrial and systems engineering in the College of Engineering at Virginia Tech, has been reappointed as the Hal G. Prillaman Professor Fellow in Industrial and Systems Engineering by the Virginia Tech Board of Visitors.

  8. Brian M. Kleiner receives Ralph H. Bogle Professor Fellowship in Industrial and Systems Engineering

    OpenAIRE

    Owczarski, Mark

    2010-01-01

    Brian M. Kleiner, professor of industrial and systems engineering in the College of Engineering at Virginia Tech, has been named the Ralph H. Bogle Professor Fellow in Industrial and Systems Engineering by the Virginia Tech Board of Visitors.

  9. Yue Joseph Wang named Grant A. Dove Professor of Electrical and Computer Engineering

    OpenAIRE

    Owczarski, Mark

    2009-01-01

    Yue Joseph Wang, professor of electrical and computer engineering in the College of Engineering at Virginia Tech, has been named the Grant A. Dove Professor of Electrical and Computer Engineering by the Virginia Tech Board of Visitors.

  10. Production, Connection, Trade and Coin in Lusitania: The Rroma Villa of Clavellina (Torremejía, Badajoz

    Directory of Open Access Journals (Sweden)

    Noé Conejo Delgado

    2015-12-01

    Full Text Available When the A- 66 (Silver highway was built, many archaeological ruins were discovered. These ruins, were documented and studied in your totality. The Roman Villa of Clavellinas is one example of these ruins discovered. It was excavated between July 2001 and January 2002. In this archaeological site appeared many structures and a lot of archaeological remains. Also, the archaeologists documented many coins with chronological period between 1st and 4th century BC. The study of these coins and the valuation of these archaeological remains permit that we can aproximate to rural economy in the Roman Lusitania.

  11. Higher Education Institutional Affiliation and Satisfaction among Feminist Professors: Is There an Advantage to Women's Colleges?

    Science.gov (United States)

    Gross, Rachel; Kmeic, Julie; Worell, Judith; Crosby, Faye

    2001-01-01

    Examined whether feminist professors of psychology at women's colleges derived more job satisfaction than feminist professors at coed colleges. Surveys and interviews indicated that feminist professors were generally satisfied with their pedagogical situations and generally dedicated to and successful at teaching. Institutional affiliation…

  12. The Roles of a University Professor in a Teacher Study Group

    Science.gov (United States)

    Yeh, Hui-Chin; Hung, Hsiu-Ting; Chen, Yi-Ping

    2012-01-01

    The opportunities in which university professors collaborate with the practicing school teachers in a teacher study group are few. This study investigated how a university professor facilitated a collaborative teacher study group to enhance teachers' professional growth. Five primary school teachers and a university professor collaborated on…

  13. University Student Expectations of Confidentiality When Disclosing Information to Their Professors

    Science.gov (United States)

    Harris, Gregory E.; Dalton, Stephanie

    2014-01-01

    The purpose of this study was to explore university students' expectations of confidentiality when they make disclosures to their university professors. A secondary purpose was to consider if students have a higher expectation of confidentiality when talking with Psychology professors versus professors in other disciplines. Students were asked to…

  14. The Effects of Professors' Race and Gender on Student Evaluations and Performance

    Science.gov (United States)

    Basow, Susan A.; Codos, Stephanie; Martin, Julie L.

    2013-01-01

    This experimental study examined the effects of professor gender, professor race, and student gender on student ratings of teaching effectiveness and amount learned. After watching a three-minute engineering lecture presented by a computer-animated professor who varied by gender and race (African American, White), female and male undergraduates…

  15. Describing the Cognitive Level of Professor Discourse and Student Cognition in College of Agriculture Class Sessions

    Science.gov (United States)

    Ewing, John C.; Whittington, M. Susie

    2009-01-01

    The purpose of this study was to describe the cognitive level of professor discourse and student cognition during selected college of agriculture class sessions. Twenty-one undergraduate class sessions were videotaped in 12 professors' courses. Results were interpreted to show that professors' discourse was mostly (62%) at the knowledge and…

  16. Coin Tossing Explains the Activity of Opposing Microtubule Motors on Phagosomes.

    Science.gov (United States)

    Sanghavi, Paulomi; D'Souza, Ashwin; Rai, Ashim; Rai, Arpan; Padinhatheeri, Ranjith; Mallik, Roop

    2018-05-07

    How the opposing activity of kinesin and dynein motors generates polarized distribution of organelles inside cells is poorly understood and hotly debated [1, 2]. Possible explanations include stochastic mechanical competition [3, 4], coordinated regulation by motor-associated proteins [5-7], mechanical activation of motors [8], and lipid-induced organization [9]. Here, we address this question by using phagocytosed latex beads to generate early phagosomes (EPs) that move bidirectionally along microtubules (MTs) in an in vitro assay [9]. Dynein/kinesin activity on individual EPs is recorded as real-time force generation of the motors against an optical trap. Activity of one class of motors frequently coincides with, or is rapidly followed by opposite motors. This leads to frequent and rapid reversals of EPs in the trap. Remarkably, the choice between dynein and kinesin can be explained by the tossing of a coin. Opposing motors therefore appear to function stochastically and independently of each other, as also confirmed by observing no effect on kinesin function when dynein is inhibited on the EPs. A simple binomial probability calculation based on the geometry of EP-microtubule contact explains the observed activity of dynein and kinesin on phagosomes. This understanding of intracellular transport in terms of a hypothetical coin, if it holds true for other cargoes, provides a conceptual framework to explain the polarized localization of organelles inside cells. Copyright © 2018 The Author(s). Published by Elsevier Ltd.. All rights reserved.

  17. Two sides of the same coin? The (techno)epistemic cultures of systems and synthetic biology.

    Science.gov (United States)

    Kastenhofer, Karen

    2013-06-01

    Systems and synthetic biology both emerged around the turn of this century as labels for new research approaches. Although their disciplinary status as well as their relation to each other is rarely discussed in depth, now and again the idea is invoked that both approaches represent 'two sides of the same coin'. The following paper focuses on this general notion and compares it with empirical findings concerning the epistemic cultures prevalent in the two contexts. Drawing on interviews with researchers from both fields, on participatory observation in conferences and courses and on documentary analysis, this paper delineates differences and similarities, incompatibilities and blurred boundaries. By reconstructing systems and synthetic biology's epistemic cultures, this paper argues that they represent two 'communities of vision', encompassing heterogeneous practices. Understanding the relation of the respective visions of understanding nature and engineering life is seen as indispensible for the characterisation of (techno)science in more general terms. Depending on the conceptualisation of understanding and construction (or: science and engineering), related practices such as in silico modelling for enhancing understanding or enabling engineering can either be seen as incommensurable or 'two sides of one coin'. Copyright © 2013 Elsevier Ltd. All rights reserved.

  18. Alternate two-dimensional quantum walk with a single-qubit coin

    International Nuclear Information System (INIS)

    Di Franco, C.; Busch, Th.; Mc Gettrick, M.; Machida, T.

    2011-01-01

    We have recently proposed a two-dimensional quantum walk where the requirement of a higher dimensionality of the coin space is substituted with the alternance of the directions in which the walker can move [C. Di Franco, M. Mc Gettrick, and Th. Busch, Phys. Rev. Lett. 106, 080502 (2011)]. For a particular initial state of the coin, this walk is able to perfectly reproduce the spatial probability distribution of the nonlocalized case of the Grover walk. Here, we present a more detailed proof of this equivalence. We also extend the analysis to other initial states in order to provide a more complete picture of our walk. We show that this scheme outperforms the Grover walk in the generation of x-y spatial entanglement for any initial condition, with the maximum entanglement obtained in the case of the particular aforementioned state. Finally, the equivalence is generalized to wider classes of quantum walks and a limit theorem for the alternate walk in this context is presented.

  19. Exact results for the Floquet coin toss for driven integrable models

    Science.gov (United States)

    Bhattacharya, Utso; Maity, Somnath; Banik, Uddipan; Dutta, Amit

    2018-05-01

    We study an integrable Hamiltonian reducible to free fermions, which is subjected to an imperfect periodic driving with the amplitude of driving (or kicking), randomly chosen from a binary distribution like a coin-toss problem. The randomness present in the driving protocol destabilizes the periodic steady state reached in the limit of perfectly periodic driving, leading to a monotonic rise of the stroboscopic residual energy with the number of periods (N ) for such Hamiltonians. We establish that a minimal deviation from the perfectly periodic driving in the present case using such protocols would always result in a bounded heating up of the system with N to an asymptotic finite value. Exploiting the completely uncorrelated nature of the randomness and the knowledge of the stroboscopic Floquet operator in the perfectly periodic situation, we provide an exact analytical formalism to derive the disorder averaged expectation value of the residual energy through a disorder operator. This formalism not only leads to an immense numerical simplification, but also enables us to derive an exact analytical form for the residual energy in the asymptotic limit which is universal, i.e., independent of the bias of coin-toss and the protocol chosen. Furthermore, this formalism clearly establishes the nature of the monotonic growth of the residual energy at intermediate N while clearly revealing the possible nonuniversal behavior of the same.

  20. A novel method to alleviate flash-line defects in coining process

    KAUST Repository

    Xu, Jiangping

    2013-04-01

    We employ a finite element framework based on a dynamic explicit algorithm to predict the flash-line defects in the coining process. The distribution of the flash-line is obtained by building a radial friction work model at the element level. The elasto-plastic behavior of porous materials undergoing large deformations is considered where the constitutive level updates are the result of a local variational minimization problem. We study the material flow at different strokes of the die across the entire coining process and observe that the change in the flow direction of the material in the rim region may contribute to the flash lines. Our proposed framework shows that a part of the rim region in which the flash-line defects appear is consistent with the reported experimental results. We also propose a novel method of redesigning the rim geometry of the workpiece to alleviate the flash-line defects which also shows good agreement with experiments. © 2012 Elsevier Inc. All rights reserved.

  1. PREFACE: Special section on Computational Fluid Dynamics—in memory of Professor Kunio Kuwahara Special section on Computational Fluid Dynamics—in memory of Professor Kunio Kuwahara

    Science.gov (United States)

    Ishii, Katsuya

    2011-08-01

    This issue includes a special section on computational fluid dynamics (CFD) in memory of the late Professor Kunio Kuwahara, who passed away on 15 September 2008, at the age of 66. In this special section, five articles are included that are based on the lectures and discussions at `The 7th International Nobeyama Workshop on CFD: To the Memory of Professor Kuwahara' held in Tokyo on 23 and 24 September 2009. Professor Kuwahara started his research in fluid dynamics under Professor Imai at the University of Tokyo. His first paper was published in 1969 with the title 'Steady Viscous Flow within Circular Boundary', with Professor Imai. In this paper, he combined theoretical and numerical methods in fluid dynamics. Since that time, he made significant and seminal contributions to computational fluid dynamics. He undertook pioneering numerical studies on the vortex method in 1970s. From then to the early nineties, he developed numerical analyses on a variety of three-dimensional unsteady phenomena of incompressible and compressible fluid flows and/or complex fluid flows using his own supercomputers with academic and industrial co-workers and members of his private research institute, ICFD in Tokyo. In addition, a number of senior and young researchers of fluid mechanics around the world were invited to ICFD and the Nobeyama workshops, which were held near his villa, and they intensively discussed new frontier problems of fluid physics and fluid engineering at Professor Kuwahara's kind hospitality. At the memorial Nobeyama workshop held in 2009, 24 overseas speakers presented their papers, including the talks of Dr J P Boris (Naval Research Laboratory), Dr E S Oran (Naval Research Laboratory), Professor Z J Wang (Iowa State University), Dr M Meinke (RWTH Aachen), Professor K Ghia (University of Cincinnati), Professor U Ghia (University of Cincinnati), Professor F Hussain (University of Houston), Professor M Farge (École Normale Superieure), Professor J Y Yong (National

  2. Boccioni's coin.

    Science.gov (United States)

    Giuntini, Sergio; Teja, Angela

    2011-01-01

    The Ardito was a fighter as well as a competitor whose status as a 'warrior' was based on courage and superior physical performance: a superior man. In addition, his exuberant conduct, both on and off the battlefield, introduced a significant new sub-culture into post-war Italian society, contributing to the attachment of notable value to virility and Mussolini's cult of the 'strong man'. The purpose of this research is to analyse the impact of this 'arditismo' (spirit of daring) on the early post-war period in particular, including the different 'male image' of the Italian citizen, and to study the sense of virility in the transition from the liberal, easy-going 'Little Italy' of Giovanni Giolitti (1842-1928) to a manly, combative, and ambitious nation. Together with some of the vitalistic tendencies in the Futurist movement, the main characteristics and mentality of the ex-Ardito (former Special Forces) would thus be significantly influential in the ideology of nascent Fascism. Indeed, the 'arditismo' influence, together with the article and social movement known as Futurism would constitute the two most highly structured foundations of early Fascist culture, bringing a political and social revolution necessary to create a 'new man'. It was as if the Arditi and the new method of military training had transferred their experience from the military into civilian life, contributing to a renewal of the image of the Italian male in the collective imagination. Indirectly, the image of women would also begin to absorb and adapt to new sports models imported from abroad, which would create for the Italian Ardito, a grudgingly tolerated rival. The main sources for this paper are the archives of the Historical Office of the Army, advertising and manuals from the late nineteenth to the early twentieth century, placards and graphic publicity from books and journals or private collections, and exhibition catalogues.

  3. Biography of Professor Cornel Tiberiu Opriş. Professional maturity.

    Science.gov (United States)

    Rotaru, Alexandru; Rotaru, Horatiu

    2017-01-01

    Professor Cornel Tiberiu Opris was the founder and Chair of the Clinic and University Department of Oral and Maxillofacial Surgery in Cluj, after the Education Reform of 1948. The article illustrates how the founder of these institutions led a valiant struggle for obtaining and arranging a location for the newly established Faculty of Dentistry, within the Institute of Medicine and Pharmacy. Professor Cornel Tiberiu Opriş established himself as the most prodigious researcher at the Faculty for over a quarter-century, until his retirement, introducing his original conception in the therapeutic and surgical field. He created in Cluj-Napoca a specialist medical school by imposing national prestige for the institution that he led.

  4. [Professor SONG Nanchang's experience for treatment of peripheral facial paralysis].

    Science.gov (United States)

    He, Yong; Pan, Hao; Xu, Hanbin

    2015-06-01

    Professor SONG Nanchang's clinical experience and characteristics for treatment of peripheral facial paralysis are introduced. In clinical treatment, professor SONG has adopted staging treatment strategy, and performed acupuncture stimulation with different levels. He attaches great importance to the acupoint selection on distal limbs. For the treatment on the face, he takes temperature as necessity; he inherits from famous Chinese doctor ZONG Ruilin's acupuncture technique of slow-twisting and gentle-pressing. Meanwhile, he excels in combination, of different therapies, using acupuncture, moxibustion, electroacupuncture, auricular point sticking, Chinese herbal medicine, etc. according to individual condition and disease stages. He also emphasizes on psychological counseling and daily life care to achieve rehabilitation within the shortest time.

  5. [Professor GAO Yuchun's experience of acupuncture for headache].

    Science.gov (United States)

    Cui, Linhua; Xing, Xiao; Xue, Weihua; Wang, Yanjun; Xu, Cejun; Xuc, Jun; Gao, Yuchun; Kang, Suobin

    2015-12-01

    As one of the important founders of GAO's acupuncture academic school in YanZhao area, Professor GAO Yuchun 's experience of acupuncture for headache is summarized in this paper. In the opinion of Professor GAO, the treatment of headache should focus on eliminating evil and relieving pain, and the syndrome differentiation should be based on meridian differentiation, especially on three yang meridians of foot as well as liver meridian and kidney meridian. In the acupoint prescription, attention should be placed on strengthening the spleen and stomach. The midnight-midday ebb flow acupuncture is advocated. The combination between acupuncture order and movement of qi is emphasized. In the manipulation, the role of pressing hand, the stimulation during reinforcing and reducing methods, and needle-retention time are important. The breathing reinforcing and reducing method of acupuncture are also advocated.

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

    Science.gov (United States)

    Xue, Hongsheng; Zhang, Jin

    2017-08-12

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

  7. [Professor ZHAO Jiping's meridian diagnosis and treatment for primary dysmenorrhea].

    Science.gov (United States)

    Tan, Cheng; Zhang, Chang; Zhang, Jiajia; Wang, Jun

    2016-03-01

    For the treatment of primary dysmenorrhea, professor ZHAO Jiping focuses on meridian diagnosis and inspection, and uses pressing methods to locate the response points along the meridian, including acupoints and aishi points. During the stage of attack, it is essential to press along the spleen meridian, mainly Sanyinjiao (SP 6), Diji (SP 8) and Yinlingquan (SP 9); during the stage of remission, it is essential to press along the bladder meridian and stomach meridian, mainly Ganshu (BL 18), Pishu (BL 20), Weishu (BL 21), Shenshu (BL 23) and Zusanli (ST 36). The differences between deficiency syndrome and excess syndrome lead to the different feelings of doctors and patients. Combined with the results of meridian diagnosis and inspection, the aim of treatment can be achieved by different acupuncture methods. Professor ZHAO pays attention to the treatment of accompanied symptoms and timing of treatment, since the relief of accompanied syndromes and selection of timing are keys to relieving patient's pain.

  8. [Summary of professor YANG Jun's experience for intractable facial paralysis].

    Science.gov (United States)

    Wang, Tao; Li, Zaiyuan; Ge, Tingqiu; Zhang, Man; Yuan, Aihong; Yang, Jun

    2017-06-12

    Professor YANG Jun 's experience of diagnosis and treatment for intractable facial paralysis is introduced. Professor YANG focuses on the thinking model that combines TCM, western medicine and acupuncture, and adopts the differentiation system that combines disease differentiation, syndrome differentiation and meridian differentiation; he adopts the treatment integrates etiological treatment, overall regulation, symptomatic treatment as well as acupuncture, moxibustion, medication and flash cupping. The acupoints of yangming meridians are mostly selected, and acupoints of governor vessel such as Dazhui (GV 14) and Jinsuo (GV 8) are highly valued. The multiple-needles shallow-penetration-insertion twirling lifting and thrusting technique are mostly adopted to achieve slow and mild acupuncture sensation; in addition, the facial muscles are pulled up with mechanics action. The intensive stimulation with electroacupuncture is recommended at Qianzheng (Extra), Yifeng (TE 17) and Yangbai (GB 14), which is given two or three treatments per week.

  9. Qualidade do sono entre professores e fatores associados

    OpenAIRE

    Denise Andrade Pereira Meier

    2016-01-01

    O sono desempenha função notável na prevenção de doenças, manutenção e recuperação da saúde física e mental. Como processo reparador, sofre influências de fatores determinantes e condicionantes, que o tornam complexo e multifacetado. As condições adversas de trabalho enfrentadas por professores podem prejudicar sua qualidade de vida e, consequentemente, seu padrão de sono. Este estudo objetivou analisar a qualidade do sono e fatores associados em professores da educação básica. Trata-se de um...

  10. An Outstanding Career: Professor Emeritus Iacob Cătoiu

    Directory of Open Access Journals (Sweden)

    Octavian Oprică

    2016-05-01

    Full Text Available Through the duration of his commissions of Deputy Dean (1981-1989 and, respectively, Dean (1992-2003, and also by the manner of approaching the managerial problems and his scientific extension, Professor Iacob Cătoiu left and indelible trace on the evolution of the former Department of Commerce in the Bucharest University of Economic Studies (ASE – now the Department of Business and Tourism. He is author or co-author of an important number of books (57 and articles (105 and book presentations. Thus, after he made the personal acquaintance with Philip Kotler, the guru of international marketing, in 1997, Professor Iacob Cătoiu wrote the Forward to the Romanian version of Philip Kotler's volume Managementul marketingului (Marketing Management a fundamental book in its field. (Nicolae Lupu

  11. PHYSICAL ACTIVITY AND EATING HABITS IN UNIVERSITY PROFESSORS: LITERATURE REVIEW

    Directory of Open Access Journals (Sweden)

    Hector Luiz Rodrigues Munaro

    2015-01-01

    Full Text Available Increasingly, university professors engage in academic tasks often stressful and sedentary behaviors, making the practice of physical activity and healthier eating habits. The aim of this study was to review the literature Brazilian studies on physical activity and eating habits of university professors .The search was conducted between March and May 2013, in electronic databases. For the delimitation of the study, was used as descriptors: Physical Activity, University Teachers and Eating Habits. At the end of the article selection process, remaining 06 studies that have been described and discussed in the text. And all of a descriptive nature, with small samples with some robust and consistent methodology. The selected studies, regardless of their qualities, point to the need of this population to engage in more physical activity and healthy eating habits programs

  12. PHYSICAL ACTIVITY AND EATING HABITS IN UNIVERSITY PROFESSORS: LITERATURE REVIEW

    Directory of Open Access Journals (Sweden)

    Hector Luiz Rodrigues Munaro

    2015-03-01

    Full Text Available Increasingly, university professors engage in academic tasks often stressful and sedentary behaviors, making the practice of physical activity and healthier eating habits. The aim of this study was to review the literature Brazilian studies on physical activity and eating habits of university professors .The search was conducted between March and May 2013, in electronic databases. For the delimitation of the study, was used as descriptors: Physical Activity, University Teachers and Eating Habits. At the end of the article selection process, remaining 06 studies that have been described and discussed in the text. And all of a descriptive nature, with small samples with some robust and consistent methodology. The selected studies, regardless of their qualities, point to the need of this population to engage in more physical activity and healthy eating habits programs.

  13. The university professor: integration between the personal and professional dimension

    Directory of Open Access Journals (Sweden)

    José Javier BERMÚDEZ-APONTE

    2017-12-01

    Full Text Available In the first part of this article, the authors explain how the teaching role is affected by certain social and cultural changes, like the knowledge society emergence, the universities orientation towards marketing, the constant demand and pressure exerted on teachers to publish, the loss of the ethical sense in the academic activity and the disparity of tasks that are being assigned to the university professors. In view of the above, a comprehensive model, compound by two concepts –personal and professional– of a university professor is proposed; in fact, this model incorporates and summarises different contributions regarding this theme. Finally, this article aims to defend the need to understand the teaching role as a vocation, in the broadest sense of the word, a vocation carries the inclination to pursue an aim: the education of those students that teachers have in charge.

  14. The University Professor View from the Communitarian Perspective

    Directory of Open Access Journals (Sweden)

    Angela Del Valle López

    2014-04-01

    Full Text Available The task of the university professor is a mission and not simply a profession and that is why higher education should be impregnated with values. Nowadays education is articulated into three areas: the State, the Market and the Volunteering, but no one of these three sectors by themselves has covered the needs of all the citizens, there have always been losers, therefore the conjunction of the three sectors became necessary. Communitarianism promotes an ethical-social pact that favors the progress of society without nullifying the individual dimension. It believes that the university is the space where a communitarian consciousness should be promoted to generate a social capital by means of education and it is a privilege place to substantiate the moral identity of the person beginning with the commitment of the professor with the university student.

  15. Professor Peter Higgs: "My Life as a Boson"

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    Professor Peter Higgs played a key role in the development of the Standard Model, our current theory of fundamental physics. The search for the Higgs Boson is the centrepiece of the LHC programme at CERN, and the existence of this famously elusive particle is likely to be confirmed or refuted with data currently being collected, using apparatus partly designed at Bristol. Professor Higgs will introduce the ideas of spontaneous symmetry breaking, and discuss how these developed from their application in condensed matter through the earlier work of Yoichiro Nambu and Jeffrey Goldstone, to the work of Robert Brout, Francois Englert and himself in 1964. The subsequent application of these ideas to electroweak theory will be discussed briefly.

  16. YouTube Professors: Scholars as Online Video Stars

    Science.gov (United States)

    Young, Jeffrey R.

    2008-01-01

    This article takes a look at the rising popularity of professors as the latest YouTube stars. The popularity of their appearances on YouTube and other video-sharing sites is making it possible for classrooms to be opened up and making teaching--which once took place behind closed doors--a more public art. Web video has generated a new form of…

  17. YouTube Professors Scholars as Online Video Stars

    Science.gov (United States)

    Young, Jeffrey R.

    2008-01-01

    This article takes a look at how professors are becoming the latest YouTube stars. The popularity of their appearances on YouTube and other video-sharing sites end up opening the classroom and making teaching--which once took place behind closed doors--a more public art. Web videos open a new form of public intellectualism to scholars looking to…

  18. Professor V. Weisskopf, CERN Director General (1961-1965)

    CERN Document Server

    1962-01-01

    Well known theoretical physicist Victor Weisskopf has died aged 93. Born in Austria, he later worked with Schrodinger in Berlin before emigrating to the US in 1937, where he joined the Manhattan project in 1944, and was witness to the Trinity Test in July 1945. In 1946 he became professor of physics at MIT. He took leave of absence to be Director General of CERN, the European Organization for Nuclear Physics, from 1961-1965.

  19. IN MEMORIAM: PROFESSOR STELIAN PETRESCU (1951 – 2011

    Directory of Open Access Journals (Sweden)

    Ioan Mămăligă

    2011-12-01

    Full Text Available Today, I want to believe in the old saying that the soul, the spirit of the departed lingers on for a while among the living. I like to believe our homage here today will somehow reach Stelian Petrescu, our professor, colleague, mentor and coworker, who put his passion, talent, love and devotion into serving the chemical engineering school in Iaşi. His life and work have been closely related to our Faculty of Chemical Engineering and Environmental Protection. In 1975, he graduated from the Faculty of Industrial Chemistry of the Polytechnic Institute with a degree in the Technology of Inorganic Substances, and in 1980, he went on to teach at the “Gheorghe Asachi” Technical University in Iaşi, where he gradually built an exceptional career. In 1987, he earned a PhD in chemical engineering, and he became a full professor in 1996. A hard worker and brilliant researcher, Professor Petrescu has published over 15 books and textbooks and over 150 valuable scientific articles. He was also the author of over 40 patents, many of which received awards at international invention fairs. An outstanding member of the group of teachers with the Chemical Engineering Department, which he has run and coordinated for a long time, he has contributed to the education of over 30 generations of engineers and the development of a new generation of doctors in chemical engineering. He was beloved and held in high regard both by his students and his colleagues. Professor Petrescu has left this world prematurely, unexpectedly and unjustly. We will all miss him and will surely remember all the wonderful times we spent together. On behalf of his colleagues and students, I would like to extend my deepest condolences to his family.

  20. Professor Created On-line Biology Laboratory Course

    Science.gov (United States)

    Bowman, Arthur W.

    2010-01-01

    This paper will share the creation, implementation, and modification of an online college level general biology laboratory course offered for non-science majors as a part of a General Education Curriculum. The ability of professors to develop quality online laboratories will address a growing need in Higher Education as more institutions combine course sections and look for suitable alternative course delivery formats due to declining departmental budgets requiring reductions in staffing, equipment, and supplies. Also, there is an equal or greater need for more professors to develop the ability to create online laboratory experiences because many of the currently available online laboratory course packages from publishers do not always adequately parallel on-campus laboratory courses, or are not as aligned with the companion lecture sections. From a variety of scientific simulation and animation web sites, professors can easily identify material that closely fit the specific needs of their courses, instructional environment, and students that they serve. All too often, on-campus laboratory courses in the sciences provide what are termed confirmation experiences that do NOT allow students to experience science as would be carried out by scientists. Creatively developed online laboratory experiences can often provide the type of authentic investigative experiences that are not possible on-campus due to the time constraints of a typical two-hour, once-per-week-meeting laboratory course. In addition, online laboratory courses can address issues related to the need for students to more easily complete missing laboratory assignments, and to have opportunities to extend introductory exercises into more advanced undertakings where a greater sense of scientific discovery can be experienced. Professors are strongly encourages to begin creating online laboratory exercises for their courses, and to consider issues regarding assessment, copyrights, and Intellectual Property

  1. [Surgical intervention against overpopulation: Professor Weinhold's foreskin infibulation].

    Science.gov (United States)

    Mörgeli, C

    1993-01-01

    One of the most bizarre and forgotten suggestions to have developed from the discussion of pauperism in the 19th century was the infibulation of the impoverished men. A communication in 1827 from the Halle professor of surgery, Carl August Weinhold (1782-1829), raised indignation and caused ironic as well as angry reactions. Despite such a heated response, Weinhold's proposed method of population control soon fell into oblivion, a fate considered by this contemporaries as "highly desirable".

  2. The United Kingdom's First Woman Law Professor: An Archerian Analysis

    OpenAIRE

    Cownie, FC

    2015-01-01

    In 1970, at Queen's University Belfast, Claire Palley became the first woman to hold a Chair in Law at a United Kingdom university. However, little is known about the circumstances surrounding this event, or Claire Palley herself. This article (part of an extended project exploring her life history) seeks to address the question ‘Was there something about Claire Palley herself that made it more likely she would become the United Kingdom's first female law professor?’ Initially focusing on met...

  3. X-ray Fluorescence analytical criteria to assess the fineness of ancient silver coins: Application on Ptolemaic coinage

    Energy Technology Data Exchange (ETDEWEB)

    Kantarelou, Vasiliki, E-mail: kantarelou@inp.demokritos.gr [Institute of Nuclear Physics, NCSR ' Demokritos' , Aghia Paraskevi Attikis, 153 10 (Greece); Ager, Francisco Jose, E-mail: fjager@us.es [Departamento de Fisica Aplicada I, Universidad de Sevilla, Sevilla (Spain); Centro Nacional de Aceleradores, Avda. Thomas A. Edison, 7. E-41092 Sevilla (Spain); Eugenidou, Despoina [Numismatic Museum, Athens (NMA), Athens (Greece); Chaves, Francisca [Departamento de Prehistoria y Arqueologia, Universidad de Sevilla, Sevilla (Spain); Andreou, Alexandros; Kontou, Elena; Katsikosta, Niki [Numismatic Museum, Athens (NMA), Athens (Greece); Respaldiza, Miguel Angel [Departamento de Fisica Aplicada I, Universidad de Sevilla, Sevilla (Spain); Serafin, Patrizia [Dipartimento di Beni Culturali, Musica e Spettacolo, Universita degli Studi di Roma ' Tor Vergata' , Roma (Italy); Sokaras, Dimosthenis [Institute of Nuclear Physics, NCSR ' Demokritos' , Aghia Paraskevi Attikis, 153 10 (Greece); Zarkadas, Charalambos [PANalytical B.V., 7600 AA Almelo (Netherlands); Polikreti, Kyriaki, E-mail: kpolykreti@culture.gr [Hellenic Ministry of Culture, Directorate of Conservation of Ancient and Modern Monuments, Dept. of Applied Research, Pireos 81, 105 53, Athens (Greece); Karydas, Andreas Germanos, E-mail: A.Karydas@iaea.org [Institute of Nuclear Physics, NCSR ' Demokritos' , Aghia Paraskevi Attikis, 153 10 (Greece); Nuclear Spectrometry and Applications Laboratory, IAEA, Seibersdorf (Austria)

    2011-09-15

    The application of X-ray Fluorescence (XRF) analysis in a non-invasive manner on ancient silver coins may not provide reliable bulk compositional data due to possible presence of a surface, silver enriched layer. The present work proposes a set of three complementary analytical methodologies to assess and improve the reliability of XRF data in such cases: a) comparison of XRF data on original and cleaned micro-spots on coin surface, b) Ag K/L ratio test and c) comparison of experimental and theoretically simulated intensities of the Rayleigh characteristic radiation emitted from the anode. The proposed methodology was applied on 82 silver coins from the collection of Ioannes Demetriou, donated to the Numismatic Museum of Athens in the 1890s. The coins originate from different mints and are attributed to the first five Ptolemaic kings' reign (321-180 B.C.). They were analyzed in-situ by using a milli-probe XRF spectrometer. The presence of an Ag-enriched layer was excluded for the majority of them. The silver fineness was found to be high, with very low concentrations of copper and lead. The composition data provide important information about possible sources of silver during the Ptolemaic period and indications of a gradual coinage debasement after 270 B.C. due to economic or technical reasons.

  4. X-ray Fluorescence analytical criteria to assess the fineness of ancient silver coins: Application on Ptolemaic coinage

    International Nuclear Information System (INIS)

    Kantarelou, Vasiliki; Ager, Francisco José; Eugenidou, Despoina; Chaves, Francisca; Andreou, Alexandros; Kontou, Elena; Katsikosta, Niki; Respaldiza, Miguel Angel; Serafin, Patrizia; Sokaras, Dimosthenis; Zarkadas, Charalambos; Polikreti, Kyriaki; Karydas, Andreas Germanos

    2011-01-01

    The application of X-ray Fluorescence (XRF) analysis in a non-invasive manner on ancient silver coins may not provide reliable bulk compositional data due to possible presence of a surface, silver enriched layer. The present work proposes a set of three complementary analytical methodologies to assess and improve the reliability of XRF data in such cases: a) comparison of XRF data on original and cleaned micro-spots on coin surface, b) Ag K/L ratio test and c) comparison of experimental and theoretically simulated intensities of the Rayleigh characteristic radiation emitted from the anode. The proposed methodology was applied on 82 silver coins from the collection of Ioannes Demetriou, donated to the Numismatic Museum of Athens in the 1890s. The coins originate from different mints and are attributed to the first five Ptolemaic kings' reign (321–180 B.C.). They were analyzed in-situ by using a milli-probe XRF spectrometer. The presence of an Ag-enriched layer was excluded for the majority of them. The silver fineness was found to be high, with very low concentrations of copper and lead. The composition data provide important information about possible sources of silver during the Ptolemaic period and indications of a gradual coinage debasement after 270 B.C. due to economic or technical reasons.

  5. Heads and tails: both sides of the coin: an analysis of hybrid organizations in the Dutch waste management sector

    NARCIS (Netherlands)

    Karré, P.M.

    2011-01-01

    In this thesis, Philip Marcel Karré argues that hybridity can only be fully understood and managed when one considers both sides of the coin, and sees benefits and risks as each other’s flipsides. By analyzing hybrid organizations in the Dutch waste management sector, he develops a perspective on

  6. Supercapacitive properties of symmetry and the asymmetry two electrode coin type supercapacitor cells made from MWCNTS/nickel oxide nanocomposite

    CSIR Research Space (South Africa)

    Adekunle, AS

    2011-10-01

    Full Text Available Supercapacitive properties of synthesised nickel oxides (NiO) nanoparticles integrated with multi-walled carbon nanotubes (MWCNT) in a two-electrode coin cell type supercapacitor were investigated. Successful formation of the MWCNT-NiO nanocomposite...

  7. 78 FR 26116 - Pricing for the 2013 America the Beautiful Quarter Five Ounce Silver Uncirculated CoinsTM

    Science.gov (United States)

    2013-05-03

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2013 America the Beautiful Quarter Five Ounce Silver Uncirculated Coins TM AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2013 America the Beautiful Quarter...

  8. 77 FR 31069 - Pricing for the 2012 America the Beautiful Quarters Five Ounce Silver Uncirculated CoinsTM

    Science.gov (United States)

    2012-05-24

    ... DEPARTMENT OF THE TREASURY United States Mint Pricing for the 2012 America the Beautiful Quarters Five Ounce Silver Uncirculated Coins TM AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2012 America the Beautiful...

  9. Volume celebrating the 60th birthday of Professor Dr. Franz Fie; Professor Dr. Franz Fiedler zum 60. Geburtstag

    Energy Technology Data Exchange (ETDEWEB)

    Beheng, K.D. [ed.

    1998-01-01

    This report was compiled in honor of Professor Dr. Franz Fiedler on the occasion of his 60th birthday on 7 January 1998. Its contributions deal with mesoscale modelling, the propagation of air pollutants, measurements of precipitation using radar, and prediction models. (orig./KW) [Deutsch] Dieser Bericht wurde aus Anlass des 60. Geburtstags von Herrn Prof. Dr. Franz Fiedler am 7. Januar 1998 zusammengestellt. Die Beitraege behandeln mesoskalige Modellierung, Ausbreitung von Luftschadstoffen, Niederschlagsmessung mit Radar und Vorhersagemodelle. (orig.)

  10. Improvement of environment and work posture through ergonomic approach to increase productivity of balinese kepeng coin workers in Kamasan village Klungkung Bali

    Science.gov (United States)

    Suarbawa, I. K. G. J.; Arsawan, M.; Yusuf, M.; Anom Santiana, I. M.

    2018-01-01

    Balinese coins (Pis Bolong) have become part of Balinese life as yadnya material or religious ceremony. To meet a variety of purposes, balinese coint today many produced by the community Kamasan village of Bali, in addition to religious purposes are also used as souvenirs. Pis bolong (kepeng coin) manufactured by molding techniques and molding metal in a simple manner of raw materials in a furnace smelting subsequently printed and refining process. Kepeng coins (Balinese coins) to production reached 20,000 in a day with more than 50 artisans. Use of a furnace with open flame and work posture and ways of working are not naturally able to increase the workload, subjective disorders of artisans, and decrease productivity. To overcome these problems, the improvement of environment and work posture by ergonomic approach. This research used by design “pre and post test group design” to 8 crafters of the melting process. Productivity calculated from the number of kepeng coin produced per work pulse of workers. The results showed that there were significant difference in productivity between treatment 1 (using old way) with treatment 2 (using improvement of environment and work posture) in kepeng coin workers. Work productivity increase by 33.9%. It can be concluded that the improvement of environment and work posture through ergonomic approach increase productivity of kepeng coin workers.

  11. Quantum dice rolling: a multi-outcome generalization of quantum coin flipping

    International Nuclear Information System (INIS)

    Aharon, N; Silman, J

    2010-01-01

    The problem of quantum dice rolling (DR)-a generalization of the problem of quantum coin flipping (CF) to more than two outcomes and parties-is studied in both its weak and strong variants. We prove by construction that quantum mechanics allows for (i) weak N-sided DR admitting arbitrarily small bias for any N and (ii) two-party strong N-sided DR saturating Kitaev's bound for any N. To derive (ii) we also prove by construction that quantum mechanics allows for (iii) strong imbalanced CF saturating Kitaev's bound for any degree of imbalance. Furthermore, as a corollary of (ii) we introduce a family of optimal 2m-party strong n m -sided DR protocols for any pair m and n.

  12. Two sides of the same coin: stem cells in cancer and regenerative medicine.

    Science.gov (United States)

    Ilmer, Matthias; Vykoukal, Jody; Recio Boiles, Alejandro; Coleman, Michael; Alt, Eckhard

    2014-07-01

    Multipotent stromal cells (MSCs) derived from bone marrow, adipose tissue, cord blood, and other origins have recently received much attention as potential therapeutic agents with beneficial immunomodulatory and regenerative properties. In their native tissue environment, however, such cells also appear to have essential functions in building and supporting tumor microenvironments, providing metastatic niches, and maintaining cancer hallmarks. Here, we consider the varied roles of these tissue-resident stroma-associated cells, synthesize recent and emerging discoveries, and discuss the role, potential, and clinical applications of MSCs in cancer and regenerative medicine.-Ilmer, M., Vykoukal, J., Recio Boiles, A., Coleman, M., Alt, E. Two sides of the same coin: stem cells in cancer and regenerative medicine. © FASEB.

  13. Characterization of MoS2-Graphene Composites for High-Performance Coin Cell Supercapacitors.

    Science.gov (United States)

    Bissett, Mark A; Kinloch, Ian A; Dryfe, Robert A W

    2015-08-12

    Two-dimensional materials, such as graphene and molybdenum disulfide (MoS2), can greatly increase the performance of electrochemical energy storage devices because of the combination of high surface area and electrical conductivity. Here, we have investigated the performance of solution exfoliated MoS2 thin flexible membranes as supercapacitor electrodes in a symmetrical coin cell arrangement using an aqueous electrolyte (Na2SO4). By adding highly conductive graphene to form nanocomposite membranes, it was possible to increase the specific capacitance by reducing the resistivity of the electrode and altering the morphology of the membrane. With continued charge/discharge cycles the performance of the membranes was found to increase significantly (up to 800%), because of partial re-exfoliation of the layered material with continued ion intercalation, as well as increasing the specific capacitance through intercalation pseudocapacitance. These results demonstrate a simple and scalable application of layered 2D materials toward electrochemical energy storage.

  14. Multielement analysis of archaic Chinese bronze and antique coins by fast neutron activation analysis

    Energy Technology Data Exchange (ETDEWEB)

    Tian, Y.H. (Academia Sinica, Lanzhou, Gansu (China). Inst. of Modern Physics); Pepelnik, R.; Fanger, H.U. (GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht-Tesperhude (Germany, F.R.). Inst. fuer Physik)

    1990-01-01

    Samples of archaic bronze have been investigated by fast neutron activation analysis using both the absolute and relative method. The components Cu, Zn, Sn and Pb have been determined quantitatively. For the detection of lead via the short-lived isomeric state {sup 207m}Pb, cyclic activation and measurement technique was used with pneumatic sample transfer between detector and central irradiation position of the neutron tube. For non-destructive analysis of antique Chinese coins the samples had to be irradiated outside the neutron generator KORONA. The activation reactions, the evaluation of the elemental concentrations and the accuracy of the results are discussed. The data were corrected for {gamma}-ray self-absorption in the samples and summing of coincident {gamma}-rays in the detector. According to reported typical compositions of Chinese bronze from different dynasties, the age of the samples has been derived from the results obtained. (orig.).

  15. 'Magic coins' and 'magic squares': the discovery of astrological sigils in the Oldenburg Letters.

    Science.gov (United States)

    Roos, Anna Marie

    2008-09-20

    Enclosed in a 1673 letter to Henry Oldenburg were two drawings of a series of astrological sigils, coins and amulets from the collection of Strasbourg mathematician Julius Reichelt (1637-1719). As portrayals of particular medieval and early modern sigils are relatively rare, this paper will analyse the role of these medals in medieval and early modern medicine, the logic behind their perceived efficacy, and their significance in early modern astrological and cabalistic practice. I shall also demonstrate their change in status in the late seventeenth century from potent magical healing amulets tied to the mysteries of the heavens to objects kept in a cabinet for curiosos. The evolving perception of the purpose of sigils mirrored changing early modem beliefs in the occult influences of the heavens upon the body and the natural world, as well as the growing interests among virtuosi in collecting, numismatics and antiquities.

  16. Multi-Robot Item Delivery and Foraging: Two Sides of a Coin

    Directory of Open Access Journals (Sweden)

    Somchaya Liemhetcharat

    2015-09-01

    Full Text Available Multi-robot foraging has been widely studied in the literature, and the general assumption is that the robots are simple, i.e., with limited processing and carrying capacity. We previously studied continuous foraging with slightly more capable robots, and in this article, we are interested in using similar robots for item delivery. Interestingly, item delivery and foraging are two sides of the same coin: foraging an item from a location is similar to satisfying a demand. We formally define the multi-robot item delivery problem and show that the continuous foraging problem is a special case of it. We contribute distributed multi-robot algorithms that solve the item delivery and foraging problems and describe how our shared world model is synchronized across the multi-robot team. We performed extensive experiments on simulated robots using a Java simulator, and we present our results to demonstrate that we outperform benchmark algorithms from multi-robot foraging.

  17. Graduate Student Attitudes toward Professor Pedagogical Content Knowledge, Transformational Teaching Practices, Student-Professor Engagement in Learning, and Student Deep Learning in Worldwide Business and Education Programs

    Science.gov (United States)

    Economos, Jennifer Lynn

    2013-01-01

    Some professors are expected to remain competitive research scholars, as well as teach, particularly in research-intensive universities. It has been argued that some professors spend too much time on research to obtain institutional incentives or promotion, and not enough time on teaching. Consequently, some adjuncts assume the responsibility for…

  18. EDITORIAL: 65th Birthday of Professor Hauptmann 65th Birthday of Professor Hauptmann

    Science.gov (United States)

    Lucklum, Ralf

    2009-12-01

    The papers in this special feature have been contributed by scientific partners in international research projects and from former PhD students of the Editor-in-Chief of this journal, Professor Dr Peter Hauptmann. The motivation for this feature is the occasion of Peter Hauptmann's 65th birthday on 24 July 2009 and his retirement from his chair at the Otto-von-Guericke-University, Magdeburg, Germany this autumn. Peter graduated in Physics at the Technical University Dresden and received his PhD from the Technical University Leuna-Merseburg in 1973. He habilitated in 1979. With his appointment at the Faculty of Electrical Engineering and Information Technology in 1985 the Chair of Measurement Science extended its profile to the fast growing area of sensors. Peter was one of the very early developers of ultrasonic sensor systems for process monitoring and quality assurance. The working style here was characteristic of all his future activities. He combined his background in theory and experiment on ultrasonic wave propagation and its application to material science with the advantages of rapidly developing capabilities in microelectronics and data processing. The results have meanwhile found their way into products that are now on the market worldwide. Germany's reunification opened the door to the international sensor community and the most challenging sensor research areas. Peter Hauptmann very soon became a well respected colleague and was consequently appointed as member of the Technical Program Committee of the most important sensor conferences, elected member and head of expert groups of research associations and funding organizations, and of course reviewer of many scientific journals. Nowadays Peter Hauptmann can rightly be called one of the key players in the area of sensors. Professor Hauptmann's research interests combine fundamental aspects of the sensor transduction scheme with application issues up to the use of the sensor system in the industrial world

  19. A Novel Ancient Coin-Like Fractal Multiband Antenna for Wireless Applications

    Directory of Open Access Journals (Sweden)

    Zhen Yu

    2017-01-01

    Full Text Available This study proposes a novel square-circle structure fractal multibroadband planar antenna, similar to an ancient Chinese coin-like structure, for second generation (2G, third generation (3G, fourth generation (4G, WLAN, and navigation wireless applications. The device is based on the principles and structural features of conventional monopole antenna elements, combined with the advantages of microstrip antennas and fractal geometry. A fractal method was presented for circular nested square slotted structures, similar to an ancient Chinese copper coin. The proposed antenna adapted five iterations on a fractal structure radiator, which covers more than ten mobile applications in three broad frequency bands with a bandwidth of 70% (1.43–2.97 GHz for DCS1800, TD-SCDMA, WCDMA, CDMA2000, LTE33-41, Bluetooth, GPS (Global Positioning System, BDS (BeiDou Navigation Satellite System, GLONSS (Global Navigation Satellite System, GALILEO (Galileo Satellite Navigation System, and WLAN frequency bands, 16.32% (3.32–3.91 GHz for LTE42, LTE43, and WiMAX frequency bands, and 10.92% (4.85–5.41 GHz for WLAN frequency band. The proposed antenna was fabricated on a 1.6 mm thick G10/FR4 substrate with a dielectric constant of 4.4 and a size of 88.5 × 60 mm2. The measurement results reveal that the omnidirectional radiation patterns achieve a gain of 1.16–3.75 dBi and an efficiency of 40–72%. The good agreement between the measurement results and simulation validates the proposed design approach and satisfies the requirements for various wireless applications.

  20. Maintenance of Clinical Expertise and Clinical Research by the Clinical Professors at Gifu Pharmaceutical University.

    Science.gov (United States)

    Tachi, Tomoya; Noguchi, Yoshihiro; Teramachi, Hitomi

    2017-01-01

    The clinical professors at Gifu Pharmaceutical University (GPU) provide pharmaceutical services at GPU Pharmacy, Gifu University Hospital, and Gifu Municipal Hospital to keep their clinical skills up-to-date; they also perform clinical research in collaboration with many clinical institutes. The Laboratory of Clinical Pharmacy is part of the Department of Pharmacy Practice and Science, to which the clinical professors belong, and is composed of three clinical professors (a professor, an associate professor, and an assistant professor). The professor administers the GPU Pharmacy as its director, while the associate professor and assistant professor provide pharmaceutical services to patients at Gifu Municipal Hospital, and also provide practical training for students in the GPU Pharmacy. Collectively, they have performed research on such topics as medication education for students, clinical communication education, and analysis of clinical big data. They have also conducted research in collaboration with clinical institutes, hospitals, and pharmacies. Here, we introduce the collaborative research between the Laboratory of Clinical Pharmacy and Gifu Municipal Hospital. These studies include "Risk factors contributing to urinary protein expression resulting from bevacizumab combination chemotherapy", "Hyponatremia and hypokalemia as risk factors for falls", "Economic evaluation of adjustments of levofloxacin dosage by dispensing pharmacists for patients with renal dysfunction", and "Effect of patient education upon discharge for use of a medication notebook on purchasing over-the-counter drugs and health foods". In this symposium, we would like to demonstrate one model of the association and collaborative research between these clinical professors and clinical institutes.

  1. [Needling technique of Professor Li Yan-Fang].

    Science.gov (United States)

    Li, Li-Jun

    2014-01-01

    Experiences of needling techniques of Professor LI Ya- fang is introduced in this article. Gentle and superficial insertion is adopted by Professor LI in clinic. Emphases are put on the qi regulation function, needling sensation to the affected region and insertion with both hands, especially the function of the left hand as pressing hand. The gentle and superficial insertion should be done as the follows: hold the needle with the right hand, press gently along the running course of meridians with the left hand to promote qi circulation, hard pressing should be applied at acupoints to disperse the local qi and blood, insert the needle gently and quickly into the subcutaneous region with the right hand, and stop the insertion when patient has the needling sensation. While the fast needling is characterized with shallow insertion and swift manipulation: the left hand of the manipulator should press first along the running course of the meridian, and fix the local skin, hold the needle with the right hand and insert the needle quickly into the acupoint. Withdrawal of the needle should be done immediately after the reinforcing and reducing manipulations. Professor LI is accomplished in qi regulation. It is held by him that regulating qi circulation is essence of acupuncture, letting the patient get the needling sensation is the most important task of needling. Lifting, thrusting and rotation manipulations should be applied to do reinforcing or reducing. The tissue around the tip of the needle should not be too contracted or too relaxed, and the resistance should not be too strong or too weak. The feeling of the insertion hand of the practitioner should not be too smooth or too hesitant. Needle should be inserted into the skin quickly at the moment of hard pressing by the left hand. And then, slow rotation and gentle lifting and thrusting can be applied to promote the needling sensation like electric current pass through and to reach the affected region along the

  2. The Forgetful Professor and the Space Biology Adventure

    Science.gov (United States)

    Massa, Gioia D.; Jones, Wanda; Munoz, Angela; Santora, Joshua

    2014-01-01

    This video was created as one of the products of the 2013 ISS Faculty Fellows Summer Program. Our High School science teacher faculty fellows developed this video as an elementary/middle school education component. The video shows a forgetful professor who is trying to remember something, and along the journey she learns more about the space station, space station related plant science, and the Kennedy Space Center. She learns about the Veggie hardware, LED lighting for plant growth, the rotating garden concept, and generally about space exploration and the space station. Lastly she learns about the space shuttle Atlantis.

  3. Tuning Geneva+Pythia 8 Using Professor 2

    CERN Document Server

    Gellersen, Leif Erik

    2016-01-01

    We study the tuning of the Geneva Monte Carlo framework to LHC data. Geneva improves the predictions for Drell-Yan production by including NNLO QCD corrections and extending the resummation accuracy to NNLL$'$ for 0-jettiness and NLL for 1-jettiness. The partonic results provided by Geneva are interfaced to Pythia 8 for showering including its multiple parton interaction (MPI) model. This allows us to obtain sensible predictions for Underlying Event (UE) sensitive observables too. Retuning Geneva + Pythia 8 to LHC data with the Professor 2 package shows an improved agreement for both UE sensitive and more inclusive observables.

  4. Professor Jorge Frascara, Departamento de Arte e Design

    OpenAIRE

    Stephania Padovani

    2004-01-01

    Professor do Departamento de Arte e Design da Universidade de Alberta; membro da Sociedade de Designers Gráfico do Canadá; membro do Icograda Past-Presidents Forum; membro do Editorial Boards of Design Issues (Universidade de Carnegie Mellon/MIT), Information Design Journal (John Benjamins) e Tipográfica (Buenos Aires, Argentina); membro internacional da Society for the Science of Design (Japão), membro do Conselho Diretor do Communication Research Institute da Austrália (CRIA); e membro do C...

  5. Professor Jorge Frascara, Departamento de Arte e Design

    Directory of Open Access Journals (Sweden)

    Stephania Padovani

    2004-04-01

    Full Text Available Professor do Departamento de Arte e Design da Universidade de Alberta; membro da Sociedade de Designers Gráfico do Canadá; membro do Icograda Past-Presidents Forum; membro do Editorial Boards of Design Issues (Universidade de Carnegie Mellon/MIT, Information Design Journal (John Benjamins e Tipográfica (Buenos Aires, Argentina; membro internacional da Society for the Science of Design (Japão, membro do Conselho Diretor do Communication Research Institute da Austrália (CRIA; e membro do Conselho Consultivo e Doutor em Design pela Universidade de Veneza.

  6. An Outstanding Career: Professor Emeritus Iacob Cătoiu

    OpenAIRE

    Octavian Oprică

    2016-01-01

    Through the duration of his commissions of Deputy Dean (1981-1989) and, respectively, Dean (1992-2003), and also by the manner of approaching the managerial problems and his scientific extension, Professor Iacob Cătoiu left and indelible trace on the evolution of the former Department of Commerce in the Bucharest University of Economic Studies (ASE) – now the Department of Business and Tourism. He is author or co-author of an important number of books (57) and articles (105) and book presenta...

  7. In memory of Professor Tianqin Cao(Tien-chin Tsao)

    Institute of Scientific and Technical Information of China (English)

    Youshang Zhang

    2010-01-01

    @@ In December this year,the 4th Tianqin Cao Memorial Symposium on Protein Research will be held in Xiamen(Amoy).On this occasion,it is my pleasure to write a recollection in memory of Professor Tianqin Cao.It was rather late when Ⅰ was able to study in Prof.Cao's laboratory as a graduate student in the Institute of Biochemistry.After graduating from the Department of Chemical Engineering of Zhejiang University in 1948,Ⅰ could not find a job in a chemical engineering factory; therefore,Ⅰ changed my profession to biochemistry and worked as an assistant in the Department of Biochemistry of Hunan Yale Medical College.

  8. Where are the female science professors? A personal perspective.

    Science.gov (United States)

    Kamerlin, Shina Caroline Lynn

    2016-01-01

    The first woman to earn a Professorship at a University in Europe was Laura Maria Caterina Bassi, who earned a professorship in physics at the University of Bologna in 1732. Almost 300 years and three waves of feminism later, in 2016, women typically still only comprise 20% (or less) of the number of full professors in Europe. This opinion article will discuss the experiences of being a female academic today and the factors contributing to the academic gender gap from the perspective of a "young" natural scientist, as well as providing constructive suggestions for strategies to empower women in the academic world.

  9. Constructivist Pedagogy and Symbolism: Vico, Cassirer, Piaget, Bateson

    Science.gov (United States)

    Peterson, Thomas Erling

    2012-01-01

    Constructivism is at the heart of a pedagogical philosophy going back to Vico, whose view of the interrelationship of the arts and sciences sought to reconstitute the classical "paideia". The Vichian idea that human beings can only know the truth of what they themselves have made has theoretical and practical consequences for Vico's pedagogy and…

  10. Transactional sex and sexual harassment between professors and students at an urban university in Benin.

    Science.gov (United States)

    Eller, Amanda

    2016-07-01

    This paper adds to discussion of transactional sex relationships in Africa by examining the distinction between transactional sex and sexual harassment in the context of professor-student relationships and their inherent power dynamics. By exploring the ways in which female university students in urban Benin toe the line between empowered agent and victim, I show how the power differential between professor and student obstructs the professor's ability to objectively determine consent, and examine why, in spite of this differential, male professors are frequently perceived as the victims of these relationships. Ethnographic data were gathered through participant observation on a public university campus in Benin and in-depth interviews and focus groups with 34 students and 5 professors from that university. Findings suggest that the problem of sexual harassment on campus will be difficult to address so long as transactional sex relationships between professors and students are permitted to continue.

  11. The superiority of PIXE compared to EDXRF, SEM/EDX and ICP-MS determining the provenance of medieval silver coins

    International Nuclear Information System (INIS)

    Linke, R.; Schreiner, M.; Demortier, G.; Schreiner, M.

    2001-01-01

    157 coins of the Tiroler Kreuzer, an Austrian mintage of the XIV century, were analyzed in order to determine their provenance. The silver coins were produced in the mints of Merano (Italy) and Hall (Austria) but have no markers or punches, which would enable a clear distinction. Therefore, non destructive EDXRF was applied in order to determine the Ag-content as well as minor (Cu, Pb, Bi) and trace elements (Fe, Au, Hg, Ni) Additionally investigation of cross sections using SEM/EDX were carried out to determine the Ag concentration of the core of the coins. Due to the fact that corrosion processes changed the chemical composition of the coins surfaces the analysis results showed differences up to 50% between the composition of the core and the surface

  12. [Professor CHEN Xiuhua's experience in the treatment of atopic dermatitis].

    Science.gov (United States)

    Quan, Xiaohong; Li, Shuqian; Li, Ying

    2017-03-12

    Professor CHEN Xiuhua 's clinical experiences were introduced in the intervention on atopic dermatitis with external therapies of TCM acupuncture. On the basis of the theory as cultivating the earth and clearing the heart from professor CHEN Dacan and in terms of the disease stages and skin lesion characteristics, as well as in consideration of syndrome differen-tiation, the acupoints for strengthening the spleen and clearing heart fire are selected, such as Zhongwan (CV 12), Daheng (SP 15), Shuifen (CV 9), Tianshu (ST 25), Neiguan (PC 6) and Quchi (LI 11). For the repair of skin lesion, the integration of Chinese and western medicine is used, with the internal application and external use of Chinese herbal medicines involved. The topical ointments are selected rationally. The self-blood therapy is used with acupuncture, bleeding therapy and acupoint injection applied in combination on the basis of the theory of TCM zangfu organs and modern immunological mechanism, which stimulates the nonspecific immune response in the body and strengthens acupoint stimulus effects. Medical thread therapy of Guangxi Zhuang medicine is used in moxibustion for skin damage, which effectively stops itching and promotes wound healing and skin repair.

  13. [Features of Professor Ma Kun's medication in treating ovulatory infertility].

    Science.gov (United States)

    Tong, Ya-Jing; Zhang, Hui-Xian; Chen, Yan-Xia; Dong, Mei-Ling; Ma, Kun

    2017-12-01

    In order to analyze Professor Ma Kun's medication in treating anovulatory infertility, her prescriptions for treating anovulatory infertility in 2012-2015 were collected. The medication features and the regularity of prescriptions were mined by using traditional Chinese medicine inheritance support system, association rules, complex system entropy clustering and other mining methods. Finally, a total of 684 prescriptions and 300 kinds of herbs were screened out, with a total frequency of 11 156 times; And 68 core combinations and 8 new prescriptions were mined. The top three frequently used herbs by effect were respectively tonic herb, blood circulation promoting herb, and Qi-circulation promoting herb. The top three tastes were sweetness, bitterness and pungent flavor. The results showed 28 herbs with a high frequency of ≥100.The top 10 frequently used herbs were respectively Angelica Sinensis Radix, Cyperi Rhizoma, Chuanxiong Rhizome, Paeoniae Radix Rubra, Cyathulae Radix, Taxilli Herba, Cuscutae Semen, Codonopsis Radix, Ligustri Lucidi Fructus, Paeoniae Albaand Paeoniae Radix Alba. The association rules analysis showed commonly used herbal pairs, including Rehmanniae Radix Preparata-Chuanxiong Rhizome, Rehmanniae Radix Preparata-Angelica Sinensis Radix, Cuscutae Semen-Dipsaci Radix. In conclusion, Professor Ma has treated anovulatory infertility by nourishing the kidney and activating blood throughout the treatment course, and attached the importance to the relationship between Qi and blood and there gulation of liver, spleen and kidney in treating anovulatory infertility. Copyright© by the Chinese Pharmaceutical Association.

  14. Burnout Syndrome and Self-Efficacy Beliefs in Professors

    Directory of Open Access Journals (Sweden)

    Arlington Antonio García Padilla

    2017-10-01

    Full Text Available The presence of the Burnout syndrome in professors may be regarded as a deterioration of their mental health with negative impacts on their job performance. It is known that teachers develop different activities in the areas of teaching, outreach and research. This study aims to analyze the relationship between the Burnout syndrome and self-efficacy beliefs and the academic performance in professors of the psychology and dentistry programs at a private university in the city of Barranquilla. This study is empirical and analytical with a descriptive-correlational design. The study population consisted of 93 teachers of the psychology and dentistry programs. To choose the sample, a non-probabilistic sample was used according to the inclusion and exclusion criteria that allowed selecting a total of 36 teachers who met the criteria for the study. The instruments that were used in this study was the Maslach Burnout Inventory (MBI, 1981 adapted by Seisdedos (1997, and the Teachers’ Self-Efficacy Beliefs of Tschannen-Moran and Woolfolk (2001 adapted by Covarrubias and Mendoza (2016. According to the results, it was observed that there is no significant relationship between Burnout, Self-efficacy Belief and the academic performance.

  15. Professor Dorothy A.E. Garrod: "Small, Dark, and Alive!"

    Directory of Open Access Journals (Sweden)

    Pamela Jane Smith

    1997-05-01

    Full Text Available In 1939, Dorothy Garrod became the first woman Professor in either Cambridge or Oxford. Garrod at the time was Director of Studies at Newnham College, Cambridge University and had been in charge of excava­tions in Gibraltar, Western Judaea, Southern Kurdistan and Mount Carmel for which she is now renowned. Trained by Marett at Oxford and Abbe Henri Breuil in France, she was one of our finest archaeologists. By 1939, Garrod had unearthed the well-preserved skull of 'Abel', a Neanderthal child, in Gibraltar, discovered and named the Natufian culture while excavating Shukba near Jerusalem, directed the long term, large scale excavations at Mount Carmel and traveled with Bruce Howe as her assistant to explore Bacho Kiro in Bulgaria. Once elected Professor, she became instrumental in establishing Archaeology and Anthropology as a full degree course and influential in Cambridge's decision to admit women to full membership in 1948. After retirement, she continued excavating in Lebanon and France. Here, with her close friend Suzanen Cassou de Saint Mathurin, she discovered the superb Magdalenian sculptured frieze at Angles-sur-l'Anglin.

  16. Concept of a landscape map according to Professor Franciszek Uhorczak

    Directory of Open Access Journals (Sweden)

    Meksuła Mirosław W.

    2016-09-01

    Full Text Available In the article, the concept of landscape maps by Franciszek Uhorczak (1902–1981, Professor of the Maria Curie-Skłodowska University in Lublin, was discussed. The maps constitute a cartographic illustration of volume III, IV and V of “Universal Geography” edited by Państwowe Wydawnictwo Naukowe (the National Scientific Publishing House (Warsaw 1965–1967 – the first Polish small-scale landscape maps of the world. From the perspective of the 50s, an attempt was undertaken to assess the editorial assumptions, landscape typology and selection of cartographic means used by the author, paying special attention to the selection of colours representing landscapes. Also, issues raising controversies related to the degree of generalization of particular elements of the content, typology of landscapes as well as map details were indicated. The performed analysis leads to the conclusion that landscape maps by Professor F. Uhorczak constituted one of the most significant achievements of Polish thematic cartography of the 20th century, and they are an unequaled model also for the contemporary cartographers.

  17. Homage to Professor Hans-Åke Gustafsson

    CERN Multimedia

    2010-01-01

    It was with deep sadness that we learned of the death of Professor Hans-Åke Gustafsson, an internationally recognized scientist, beloved colleague and friend. He passed away on Wednesday January 13th at the Lund University Hospital, surrounded by his loved ones, after a short battle against cancer. This is a great loss for all of us in ALICE and the whole heavy ion community. Hans-Åke, Professor at Lund University, was one of the pioneers of heavy ion physics with relativistic beams since its very beginning. He started his research at CERN, as a fellow at the ISOLDE ion beam facility, and immediately after, in the early 1980 joined the Plastic Ball collaboration at the Bevalac. One of the seminal papers of the field on the discovery of collective flow in relativistic nuclear collisions, co-authored by Hans-Åke, Hans Gutbrod and colleagues, stems from this period. From that point on he was always at the forefront of research with relativistic nuclear beams, being for three de...

  18. O papel do professor junto ao aluno com Altas Habilidades

    Directory of Open Access Journals (Sweden)

    Andréia Jaqueline Devalle Rech

    2012-03-01

    Full Text Available .Quando se discute a Educação Especial é comum, num primeiro momento, lembrar do aluno que compõe o especial na Educação como aquele com deficiência mental, auditiva, visual ou física. No entanto, assim como essas crianças, também os alunos com altas habilidades necessitam de um atendimento especializado, pois ele também é um sujeito da Educação Especial. Nesse sentido, este artigo apresenta a definição de altas habilidades, baseada na teoria de um pesquisador norte-americano e, como foco principal algumas questões que envolvem o professor de forma mais direta com o aluno com altas habilidades em sala de aula. Entre elas estão: questões sobre a aprendizagem escolar desses alunos, bem como os fatores que fazem parte desse processo, estratégias de ensino e a importância da identificação dos alunos com altas habilidades.Palavras-chave: Educação Especial. Professor. Aluno com Altas Habilidades

  19. A Novel Method for Detection of Phosphorylation in Single Cells by Surface Enhanced Raman Scattering (SERS) using Composite Organic-Inorganic Nanoparticles (COINs)

    OpenAIRE

    Shachaf, Catherine M.; Elchuri, Sailaja V.; Koh, Ai Leen; Zhu, Jing; Nguyen, Lienchi N.; Mitchell, Dennis J.; Zhang, Jingwu; Swartz, Kenneth B.; Sun, Lei; Chan, Selena; Sinclair, Robert; Nolan, Garry P.

    2009-01-01

    Background Detection of single cell epitopes has been a mainstay of immunophenotyping for over three decades, primarily using fluorescence techniques for quantitation. Fluorescence has broad overlapping spectra, limiting multiplexing abilities. Methodology/Principal Findings To expand upon current detection systems, we developed a novel method for multi-color immuno-detection in single cells using ?Composite Organic-Inorganic Nanoparticles? (COINs) Raman nanoparticles. COINs are Surface-Enhan...

  20. A hoard of Roman coins from the middle of the third century from Izvore, near Kosovska Mitrovica

    Directory of Open Access Journals (Sweden)

    Stamenković Sonja Z.

    2013-01-01

    Full Text Available This paper presents a hoard of Roman coins of copper and its alloys found by chance on a site not far from Izvore, in the vicinity of Kosovska Mitrovica. There are 28 coins of the colonial issue minted in the middle of the third century, of which 26 are issued in Viminacijum, while the presence of the province of Dacia was detected on two pieces, with the effigies of the emperor Decius and his wife Etruscilla. The hoard includes money forged by the following rulers: Gordian III (1 , Philip I (9 , Philip II (1 Decius (3 Etruscilla (1 , Quint (4, Galus (6, Volusianus (1, and two illegible copies. It testifies about the importance of the colonial mint in the circulation of money in the mid-third century in the southern areas of the province of Upper Moesia and reveals a significant production of mint in Viminacijum.

  1. BitCoin meets Google Trends and Wikipedia: Quantifying the relationship between phenomena of the Internet era

    Science.gov (United States)

    Kristoufek, Ladislav

    2013-12-01

    Digital currencies have emerged as a new fascinating phenomenon in the financial markets. Recent events on the most popular of the digital currencies - BitCoin - have risen crucial questions about behavior of its exchange rates and they offer a field to study dynamics of the market which consists practically only of speculative traders with no fundamentalists as there is no fundamental value to the currency. In the paper, we connect two phenomena of the latest years - digital currencies, namely BitCoin, and search queries on Google Trends and Wikipedia - and study their relationship. We show that not only are the search queries and the prices connected but there also exists a pronounced asymmetry between the effect of an increased interest in the currency while being above or below its trend value.

  2. DIES FOR STRIKING REPUBLICAN AND EARLY IMPERIAL COINS FROM MOESIA AND THRACE: ANCIENT FORGERIES OR SOMETHING ELSE?

    Directory of Open Access Journals (Sweden)

    Evgeni I. Paunov

    2014-04-01

    Full Text Available This paper attempts to trace the distribution of unofficial dies for striking late Republican and early Imperial coins in Moesia and Thrace, discussing eleven dies and one hub (master die. It deals with the key issues concerning these rare numismatic finds , their occurrence in the Balkan provinces of Roman Empire and their interpretation as genuine monetary items or as forgers’ accessories. Such a large concentration of dies is found in a relatively constrained area, but so far understanding does not clearly revealed what their importance is. The problem appears to be essential for the comprehension of Roman political and military activities in the Balkans during the Augustan-Tiberian period, as well as for the general discussion on ancient coin techniques.

  3. COUNTERFEITING ROMAN COINS IN THE ROMAN EMPIRE I – III A.D. STUDY ON THE ROMAN PROVINCES OF DACIA AND PANNONIA

    Directory of Open Access Journals (Sweden)

    Razvan Bogdan Gaspar

    2015-12-01

    Full Text Available This paper is based on the study of Roman silver coins, from archaeological sites located in Roman Dacia and Pannonia. Initially centred on the record of hybrid silver coins, the paper expanded its analysis on counterfeit pieces as well in order to fully understand all problems of roman silver coinage from the 1stto the 3rd centuries AD.The new and larger area of research had more than one implications, coin distribution on the studied sites, influx of coin in the province, quantity of recorded counterfeited pieces being just some of them. Thus every situation was discussed in different chapters, first presenting the coins and the laws that protected them, the studied sites and the analyse of the silver coins on these sites, the general and compared situation between the provinces, interpretation of the counterfeited and hybrid pieces and finally, conclusions on the subject.All these tasks have been achieved one step at a time, each archaeological site providing precious data which piled up and was finally pressed in order to present the correct historical situation.

  4. Complex archaeometallurgical investigation of silver coins from the XVI{sup th}-XVIII{sup th} century

    Energy Technology Data Exchange (ETDEWEB)

    Fierascu, Radu Claudiu [National R& D Institute for Chemistry and Petrochemistry – ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest (Romania); Fierascu, Irina, E-mail: dumitriu.irina@yahoo.com [National R& D Institute for Chemistry and Petrochemistry – ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest (Romania); Ortan, Alina, E-mail: alina_ortan@hotmail.com [National R& D Institute for Chemistry and Petrochemistry – ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest (Romania); University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Mărăşti Blvd., 011464 Bucharest (Romania); Constantin, Florin; Mirea, Dragos Alexandru; Statescu, Mihai [“Horia Hulubei” National Institute for Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Magurele, Ilfov (Romania)

    2017-06-15

    Highlights: • A methodology for studying metal artifacts using nuclear techniques is presented. • The methodology is applied on seven historical coins. • The results allows the identification of the alloy and corrosion products. • From the results, conclusions can be drawn related to their origin. - Abstract: When dealing with cultural heritage artifacts, the use of non-invasive and non-destructive analyses techniques is a must. Determination of the surface corrosion layers and coin composition is important both for identifying compounds that form different alloys (which can be considered support material for important objects, such as numismatic artifacts), and also for their conservation. The selection of analytical techniques is of great importance, as it is a strict condition that the structure of the artifacts should not be affected. The paper presents the archaeometallurgical study of seven silver coins, using several nuclear techniques (X-ray fluorescence – XRF, X-ray diffraction – XRD, Particle induced X-ray emission – PIXE) and optical microscopy. The study was performed using bulk methods and micro-area measurements in order to establish their composition, as well as the presence of corrosion products. This could, in turn, provide information in support of the categorization in genuine/possible forgery. From the analyzed set of samples, six can be surely categorized as genuine, while one raises some questions. A decisive conclusion cannot be drawn for one of the analyzed samples, but the scientific evidences suggest either a misstruck or a forgery approximately contemporary with the original issue of these coins.

  5. BitCoin meets Google Trends and Wikipedia: Quantifying the relationship between phenomena of the Internet era

    Czech Academy of Sciences Publication Activity Database

    Krištoufek, Ladislav

    2013-01-01

    Roč. 3, č. 3415 (2013) ISSN 2045-2322 Grant - others:GA ČR(CZ) GAP402/11/0948 Program:GA Institutional support: RVO:67985556 Keywords : BitCoin * Google Trends * Wikipedia * time series analysis Subject RIV: AH - Economics Impact factor: 5.078, year: 2013 http://library.utia.cas.cz/separaty/2013/E/kristoufek-0420810.pdf

  6. Silver surface enrichment of silver-copper alloys: a limitation for the analysis of ancient silver coins by surface techniques

    International Nuclear Information System (INIS)

    Beck, L.; Bosonnet, S.; Reveillon, S.; Eliot, D.; Pilon, F.

    2004-01-01

    The surface enrichment of archaeological silver-copper alloys has been recognized for many years. However, the origin of this enrichment is not well defined and many hypotheses have been put forward to account for this behaviour: segregation of the components during casting, deliberate thermal and/or chemical post-treatment, abrasion or corrosion. Among the hypotheses mentioned above, we have focused our study on the first step of coin manufacturing. Replications of silver-copper standards of various compositions ranging from 30% to 80% Ag, reflecting the composition of silver blanks, have been produced. Metallographic examination, PIXE and SEM-EDS have been used for the characterization of each sample. A model of the direct enrichment has been established. This model allows us to propose a relationship between the surface composition and the silver content of the core. Comparison with data of Roman coins from the Roman site of Cha-hat teaubleau (France) and from the literature and consequences for the analyses of ancient coins by surface methods are presented

  7. Professor Ta-You Wu and his ideas of science

    International Nuclear Information System (INIS)

    Ye Minghan; Dai Nianzu

    2005-01-01

    The career of Professor Ta-You Wu and his contributions in the latter half of his life in Taiwan, China are briefly reviewed. The authors focus our discussion on some of his ideas in pushing forward the advancement of science and technology in Taiwan and in promoting scientific standards. These ideas include: emphasis on the importance of basic science and qualified personnel as the foundation for the development of science and technology, and while advocating applied science he pointed out that 'future profits depend on high technology'. Thus, he contributed greatly to the rise of the economy in Taiwan. His view of the dispute between Bohr and Einstein is also briefly reviewed, as well as his principles of leadership as the president of Academia Sinica, Taiwan. (author)

  8. Pioneers of paediatrics: Professor Salah Abdelrahman Ali Taha

    Science.gov (United States)

    2013-01-01

    This article highlights the contributions of Professor Salah Abdelrahman Ali Taha (1927–1988), one of the pioneers in paediatrics in Sudan and Saudi Arabia. He graduated from Kitchener School of Medicine (renamed, Faculty of Medicine, University of Khartoum[U of K]) in 1952 and was awarded an MD from the U of K in 1973, having accomplished a survey on the prevalence and underlying causes of childhood malnutrition in 14 villages. His impact was remarkable in establishing child health services in Sudan and Saudi Arabia, and in laying the foundation of the Department of Pediatrics, College of Medicine, King Saud University. He was also an active researcher in various fields in child health, and was pioneering in those related to nutrition. Following his return to Sudan, Dr Salah A Taha was elected Member of Parliament from his rural district in Gezira State and was the Speaker of the House of Parliament in 1986. PMID:27493360

  9. Julio López Rendueles, a revolutionary professor

    Directory of Open Access Journals (Sweden)

    Zoila Rodríguez-Gobea

    2017-05-01

    Full Text Available Julio López Rendueles was part of the group of Spanish exiles who joined the rising University of Oriente, and contributed decisively to the development of this center of high studies and to the revolutionary struggle that was taking place in the nation led by Movement 26 of July. This work shows that, before arriving in Cuba, Professor López Rendueles was a prestigious intellectual and a prominent communist militant, defender of the Spanish Republic. After the triumph of the Revolution he moved to Havana, where he continued to collaborate with the Revolutionary Armed Forces in the creation of Camilo Cienfuegos Military Schools and with the Ministry of Education in the organization of polytechnic teaching and in writing books for the teaching of chemistry, physics and mathematics.

  10. Quality of life research: interview with Professor Robert Cummins

    Directory of Open Access Journals (Sweden)

    Robert Cummins

    2013-09-01

    Full Text Available Health-related quality of life (HRQOL is a fundamental concept in the field of clinical medicine and has been studied during the last years by psychologists, sociologists, economists and managers. The concept of HRQOL includes those aspects of overall QOL that can be indicated to have an impact on patients’ health, either physical or psychological. Concerning the individuals, this incorporates physical and mental health cognitions, including sociodemographic factors, sexual functioning, fatigue, sleep disorders and functional status. One of the most eminent experts in the world in the field of QOL is Prof. Robert Cummins [Professor of Psychology at Deakin University in Australia (School of Psychology, Deakin University, 221 Burwood Highway, Victoria 3125 Melbourne, Australia. E-mail: robert.cummins@deakin.edu.au] who kindly accepted to answer our questions in the con- text of this special edition.

  11. Tribute to Professor Anthony J. McMichael

    Directory of Open Access Journals (Sweden)

    Ashwin Swaminathan

    2014-11-01

    Full Text Available Emeritus Professor A. J. “Tony” McMichael (1942–2014 was an internationally renowned and pioneering Australian academic and advocate in epidemiology, who was passionate about understanding the influences of the environment on human health. In an illustrious career spanning more than four decades, he made significant contributions to the scientific community and policy discourse—including ground-breaking research related to the health of children. McMichael was a prolific academic writer with over 300 peer-reviewed papers; 160 book chapters and two sole-authored books. However, his outstanding talent was for integrating complex and seemingly unrelated strands from the environmental and health sciences into a cohesive narrative—and highlighting its relevance to lay persons, scientists and governments alike. He was instrumental in validating this nascent field of research and inspiring many others to follow his lead.

  12. Memorial meeting for professor Abdus Salam's 90th birthday

    CERN Document Server

    Duff, Michael; Khoo Phua, Kok; Memorial volume on Abdus Salam's 90th birthday

    2017-01-01

    In honor of one of the most prolific and exciting scientists of the second half of the last century, a memorial meeting was organized by the Institute of Advanced Studies at Nanyang Technological University for Professor Abdus Salam's 90th Birthday in January 2016. Salam believed that "scientific thought is the common heritage of all mankind" and that the developing world should play its part, not merely by importing technology but by being the arbiter of its own scientific destiny. That belief saw him rise from humble beginnings in a village in Pakistan to become one of the world's most original and influential particle physicists, culminating in the 1979 Nobel Prize (shared with Glashow and Weinberg) for contributions to electroweak unification, which forms an integral part of the Standard Model. The book collected the papers presented at this memorable event which saw many distinguished scientists participating as speakers to reflect on Prof Salam's great passion for the science and achievements.

  13. Two sides of the coin. Part 1. Lipid and surfactant self-assembly revisited.

    Science.gov (United States)

    Ninham, Barry W; Larsson, Kåre; Lo Nostro, Pierandrea

    2017-04-01

    Hofmeister, specific ion effects, hydration and van der Waals forces at and between interfaces are factors that determine curvature and microstructure in self assembled aggregates of surfactants and lipids; and in microemulsions. Lipid and surfactant head group interactions and between aggregates vary enormously and are highly specific. They act on the hydrophilic side of a bilayer, micelle or other self assembled aggregate. It is only over the last three decades that the origin of Hofmeister effects has become generally understood. Knowledge of their systematics now provides much flexibility in designing nanostructured fluids. The other side of the coin involves equally specific forces. These (opposing) forces work on the hydrophobic side of amphiphilic interfaces. They are due to the interaction of hydrocarbons and other "oils" with hydrophobic tails of surfactants and lipids. The specificity of oleophilic solutes in microemulsions and lipid membranes provides a counterpoint to Hofmeister effects and hydration. Together with global packing constraints these effects determine microstructure. Another factor that has hardly been recognised is the role of dissolved gas. This introduces further, qualitative changes in forces that prescribe microstructure. The systematics of these effects and their interplay are elucidated. Awareness of these competing factors facilitates formulation of self assembled nanostructured fluids. New and predictable geometries that emerge naturally provide insights into a variety of biological phenomena like anaesthetic and pheromone action and transmission of the nervous impulse (see Part 2). Copyright © 2017 Elsevier B.V. All rights reserved.

  14. Isolated aortitis versus giant cell arteritis: are they really two sides of the same coin?

    Science.gov (United States)

    Talarico, Rosaria; Boiardi, Luigi; Pipitone, Nicolo'; d'Ascanio, Anna; Stagnaro, Chiara; Ferrari, Claudia; Elefante, Elena; Salvarani, Carlo; Bombardieri, Stefano

    2014-01-01

    The aim of the study was to compare epidemiological data, clinical findings and results of investigations in patients with isolated aortitis and those with giant cell arteritis (GCA) to establish whether patients with isolated aortitis differ from those with GCA. We reviewed the medical notes of all patients consecutively seen in two Rheumatology centres in the last two decades with a suspicion of GCA, searching for cases characterised by abnormal [18F] fluorodeoxyglucose (FDG) PET uptake of the aorta. 'Isolated aortitis' was defined as increased FDG uptake in the aorta not explained by atherosclerosis in the absence of FDG uptake in other large vessels. Comparing the epidemiological and clinical data of patients with isolated arteritis with those with GCA, we observed many statistical significant differences. First of all, the male/female ratio was reversed, with a predominant male involvement in isolated arteritis. Moreover, the mean age of patients with isolated arteritis was significantly lower than that of GCA patients (62 vs. 78.4 yrs; psides of the same coin.

  15. Surface topography of 1€ coin measured by stereo-PIXE

    International Nuclear Information System (INIS)

    Gholami-Hatam, E.; Lamehi-Rachti, M.; Vavpetič, P.; Grlj, N.; Pelicon, P.

    2013-01-01

    We demonstrate the stereo-PIXE method by measurement of surface topography of the relief details on 1€ coin. Two X-ray elemental maps were simultaneously recorded by two X-ray detectors positioned at the left and the right side of the proton microbeam. The asymmetry of the yields in the pixels of the two X-ray maps occurs due to different photon attenuation on the exit travel path of the characteristic X-rays from the point of emission through the sample into the X-ray detectors. In order to calibrate the inclination angle with respect to the X-ray asymmetry, a flat inclined surface model was at first applied for the sample in which the matrix composition and the depth elemental concentration profile is known. After that, the yield asymmetry in each image pixel was transferred into corresponding local inclination angle using calculated dependence of the asymmetry on the surface inclination. Finally, the quantitative topography profile was revealed by integrating the local inclination angle over the lateral displacement of the probing beam

  16. Translation failure and medical reversal: Two sides to the same coin.

    Science.gov (United States)

    Prasad, Vinay

    2016-01-01

    Translation failure occurs when the results of preclinical, observational and/or early phase studies fail to predict the results of well done (i.e. appropriately controlled, adequately powered, and properly conducted) phase III or randomised clinical trials. Some failures occur when promising basic science findings fail to replicate in human studies, while others happen when promising uncontrolled trial data show an exaggerated effect that vanishes in the setting of a randomised trial. Medical reversals occur when the results of preclinical, observational and/or early phase studies fail to predict the results of subsequent randomized clinical trials, but the practice has already gained widespread acceptance. Oncologic examples include bevacizumab and the use of autologous stem cell transplant in metastatic breast cancer. In a well-intentioned effort to reduce the rate of translation failure, oncologists must be careful that changes to regulatory processes and clinical trial design do not actually work to increase the approval of ineffective compounds. By trying to cure translation failure, we should be careful to avoid medical reversal. The rise of surrogate end-points and role of hard-wired bias in oncology trials suggest that we may be currently ignoring the simple fact that translation failure and medical reversal are two sides to the same coin. Published by Elsevier Ltd.

  17. Attacks exploiting deviation of mean photon number in quantum key distribution and coin tossing

    Science.gov (United States)

    Sajeed, Shihan; Radchenko, Igor; Kaiser, Sarah; Bourgoin, Jean-Philippe; Pappa, Anna; Monat, Laurent; Legré, Matthieu; Makarov, Vadim

    2015-03-01

    The security of quantum communication using a weak coherent source requires an accurate knowledge of the source's mean photon number. Finite calibration precision or an active manipulation by an attacker may cause the actual emitted photon number to deviate from the known value. We model effects of this deviation on the security of three quantum communication protocols: the Bennett-Brassard 1984 (BB84) quantum key distribution (QKD) protocol without decoy states, Scarani-Acín-Ribordy-Gisin 2004 (SARG04) QKD protocol, and a coin-tossing protocol. For QKD we model both a strong attack using technology possible in principle and a realistic attack bounded by today's technology. To maintain the mean photon number in two-way systems, such as plug-and-play and relativistic quantum cryptography schemes, bright pulse energy incoming from the communication channel must be monitored. Implementation of a monitoring detector has largely been ignored so far, except for ID Quantique's commercial QKD system Clavis2. We scrutinize this implementation for security problems and show that designing a hack-proof pulse-energy-measuring detector is far from trivial. Indeed, the first implementation has three serious flaws confirmed experimentally, each of which may be exploited in a cleverly constructed Trojan-horse attack. We discuss requirements for a loophole-free implementation of the monitoring detector.

  18. Microscopic and probabilistic approach to thermal steady state based on a dice and coin toy model

    International Nuclear Information System (INIS)

    Onorato, Pasquale; Moggio, Lorenzo; Oss, Stefano; Malgieri, Massimiliano

    2017-01-01

    In this article we present an educational approach to thermal equilibrium which was tested on a group of 13 undergraduate students at the University of Trento. The approach is based on a stochastic toy model, in which bodies in thermal contact are represented by rows of squares on a cardboard table, which exchange coins placed on the squares based on the roll of two dice. The discussion of several physical principles, such as the exponential approach to equilibrium, the determination of the equilibrium temperature, and the interpretation of the equilibrium state as the most probable macrostate, proceeds through a continual comparison between the outcomes obtained with the toy model and the results of a real experiment on the thermal contact of two masses of water at different temperatures. At the end of the sequence, a re-analysis of the experimental results in view of both the Boltzmann and Clausius definitions of entropy reveals some limits of the toy model, but also allows for a critical discussion of the concepts of temperature and entropy. In order to provide the reader with a feeling of how the sequence was received by students, and how it helped them understand the topics introduced, we discuss some excerpts from their answers to a conceptual item given at the end of the sequence. (paper)

  19. Victorianizing Guangxu: Arresting Flows, Minting Coins, and Exerting Authority in Early Twentieth-Century Kham

    Directory of Open Access Journals (Sweden)

    Scott Relyea

    2016-06-01

    Full Text Available In the late Qing and early Republican eras, eastern Tibet (Kham was a borderland on the cusp of political and economic change. Straddling Sichuan Province and central Tibet, it was coveted by both Chengdu and Lhasa. Informed by an absolutist conception of territorial sovereignty, Sichuan officials sought to exert exclusive authority in Kham by severing its inhabitants from regional and local influence. The resulting efforts to arrest the flow of rupees from British India and the flow of cultural identity entwined with Buddhism from Lhasa were grounded in two misperceptions: that Khampa opposition to Chinese rule was external, fostered solely by local monasteries as conduits of Lhasa’s spiritual authority, and that Sichuan could arrest such influence, the absence of which would legitimize both exclusive authority in Kham and regional assertions of sovereignty. The intersection of these misperceptions with the significance of Buddhism in Khampa identity determined the success of Sichuan’s policies and the focus of this article, the minting and circulation of the first and only Qing coin emblazoned with an image of the emperor. It was a flawed axiom of state and nation builders throughout the world that severing local cultural or spiritual influence was possible—or even necessary—to effect a borderland’s incorporation.

  20. H.E. Professor Wang Liheng, Minister of Aviation of the People's Republic of China, President, China Aerospace Science & Technology Corporation

    CERN Multimedia

    Patrice Loïez

    2001-01-01

    H. E. Professor Wang Liheng, Minister of Aviation, and President, China Aerospace Science & Technology Corporation, People's Republic of China (2nd from left) with (from left to right) Professor Hans Hofer, Professor Roger Cashmore, Research Director for Collider Programmes, Professor Samuel C. C. Ting, CERN and Professor Lei Gang, Secretary to the Minister, September 2001.

  1. As interações professor-professor na co-construção dos projetos pedagógicos na escola

    Directory of Open Access Journals (Sweden)

    Mírian Raposo

    Full Text Available A qualidade das interações entre professores é uma realidade da cultura escolar de fundamental importância para o desenvolvimento do seu projeto pedagógico e do currículo vivido pelo aluno. Arquitetado nos pressupostos teóricos da abordagem sociocultural construtivista, este trabalho teve como objetivo investigar os processos co-construtivos presentes nas interações professor-professor, fundamentais para a elaboração e execução dos projetos vividos em uma escola pública de formação de professores do Distrito Federal. Participaram do estudo os 23 professores do curso normal, a coordenadora e o diretor. Procedimentos de observação participante das atividades pedagógicas de planejamento e execução de projetos e entrevista semi-estruturada com 10 desses participantes foram realizados em um período de três meses. A análise dos resultados focalizou (1 relações de confiança (2 interdependência indivíduo-grupo e (3 liderança. Estas categorias foram cruciais para o alcance dos objetivos estabelecidos na escola. Considera-se que estas são contribuições importantes da Psicologia aos cursos de formação inicial e continuada de professores.

  2. Analysis of Job Satisfaction of University Professors from Nine Chinese Universities

    Science.gov (United States)

    Du, Ping; Lai, Manhong; Lo, Leslie N. K.

    2010-01-01

    Research on work life and job satisfaction of university professors is becoming an important research issue in the field of higher education. This study used questionnaires administered to 1 770 teachers from different levels, types, and academic fields of Chinese universities to investigate job satisfaction among university professors and the…

  3. Enabling Possibility: Women Associate Professors' Sense of Agency in Career Advancement

    Science.gov (United States)

    Terosky, Aimee LaPointe; O'Meara, KerryAnn; Campbell, Corbin M.

    2014-01-01

    In this multimethod, qualitative study we examined associate women professors' sense of agency in career advancement from the rank of associate to full. Defining agency as strategic perspectives or actions toward goals that matter to the professor, we explore the perceptions of what helps and/or hinders a sense of agency in career advancement. Our…

  4. A Narrative Inquiry Exploring How College Communication Professors Engage Students with Public Speaking Apprehension

    Science.gov (United States)

    Riedel, Derek

    2012-01-01

    The purpose of this qualitative study was to discover how communication professors at four-year private universities help students who exhibit public speaking apprehension (PSA) learn to cope with their anxiety. The research was framed in the narrative inquiry paradigm, interviewing eight college communication professors about their experiences…

  5. Acculturative Stress, Parental and Professor Attachment, and College Adjustment in Asian International Students

    Science.gov (United States)

    Han, Suejung; Pistole, M. Carole; Caldwell, Jarred M.

    2017-01-01

    This study examined parental and professor attachment as buffers against acculturative stress and as predictors of college adjustment of 210 Asian international students (AISs). Moderated hierarchical regression analyses revealed that acculturative stress negatively and secure parental and professor attachment positively predicted academic…

  6. Online Student Evaluation of Teaching: Will Professor "Hot and Easy" Win the Day?

    Science.gov (United States)

    Mangan, Michael A.; Fleck, Bethany

    2011-01-01

    A qualitative content analysis of student comments on RateMyProfessors.com (RMP) identified the characteristics of professors rated as "good," "average," and "poor." Comments contained instructor characteristics consistent with prior research on the qualities of effective and ineffective college teachers. To better understand how students might…

  7. Strategies for Professors Who Service the University to Earn Tenure and Promotion

    Science.gov (United States)

    Gentry, Ruben; Stokes, Dorothy

    2015-01-01

    Tenure and promotion are great aspirations for college professors. They are indicators of success in the professions. Universities stipulate in their official documents and numerous higher education publications specify what professors must achieve in order to earn tenure and promotion; which almost always cite effectiveness in teaching, research,…

  8. A Comparison of Mathematics Teachers' and Professors' Views on Secondary Preparation for Tertiary Calculus

    Science.gov (United States)

    Wade, Carol; Sonnert, Gerhard; Sadler, Philip M.; Hazari, Zahra; Watson, Charity

    2016-01-01

    This article compares the views of teachers and professors about the transition from secondary mathematics to tertiary calculus. Quantitative analysis revealed five categories where teachers and professors differed significantly in the relative frequency of addressing them. Using the rite of passage theory, the separation and incorporation phases…

  9. "Simply the Best": Professors Nominated by Students for Their Exemplary Technology Practices in Teaching

    Science.gov (United States)

    Jorgensen, Mary; Havel, Alice; Fichten, Catherine; King, Laura; Marcil, Evelyne; Lussier, Alex; Budd, Jillian; Vitouchanskaia, Cristina

    2018-01-01

    Our goal was to explore the technology related pedagogical practices of college professors deemed by their students to be excellent in using technology in their teaching. We explored the views of 114 community/junior college professors who were nominated by their students as excellent in using technology in their teaching using both questionnaires…

  10. Promotion beyond Tenure: Unpacking Racism and Sexism in the Experiences of Black Womyn Professors

    Science.gov (United States)

    Croom, Natasha N.

    2017-01-01

    This study examined seven Black womyn full professors' experiences of promotion beyond tenure. Using a critical race feminist theoretical framework, findings suggest that a meritocratic ideology undergirds a dominant narrative about the Professor rank. However, racism and sexism mediated the participants' opportunities to access the status and…

  11. Romans 12 Motivational Gifts and College Professors: Implications for Job Satisfaction and Person-Job Fit

    Science.gov (United States)

    Tomlinson, Jon C.; Winston, Bruce E.

    2011-01-01

    This study builds on earlier work by DellaVecchio and Winston (2004) and McPherson (2008). They addressed the seven motivational gifts Paul wrote about in Romans 12:3-8 as a means for addressing job satisfaction and person-job fit among college professors. Using a snowball sampling method, 89 college professors completed the online survey…

  12. "Putting in Your Time": Faculty Experiences in the Process of Promotion to Professor

    Science.gov (United States)

    Gardner, Susan K.; Blackstone, Amy

    2013-01-01

    The rank of professor or "full" professor represents the highest status possible for faculty members, and it is generally gained by attaining professional expertise and a national or international reputation. Beyond this, however, little is known about these individuals or the promotion process at this level. In this qualitative study of…

  13. Identities of Special Needs Education in the Discourse of Finnish Professors of the Field

    Science.gov (United States)

    Vehkakoski, Tanja; Sume, Helena; Puro, Erika

    2011-01-01

    This article examines both the discourses upon which Finnish special needs education professors draw when speaking about their field, and the consequent identities for it. The research material consists of theme interviews with 10 professors of special needs education and is analysed from a socio-constructionist, discourse analytical perspective.…

  14. The Coaching and Mentoring Process: The Obvious Knowledge and Skill Set for Organizational Communication Professors

    Science.gov (United States)

    Stowers, Robert H.; Barker, Randolph T.

    2010-01-01

    This article explores the uses of coaching and mentoring as they apply to organizational communication professors. The authors contend that these professors already are proficient at coaching and mentoring and the coaching and mentoring processes are routinely undertaken as part of their standard university teaching responsibilities. As coaches,…

  15. Rakesh K. Kapania named Norris and Laura Mitchell Professor of Aerospace Engineering

    OpenAIRE

    Crumbley, Liz

    2008-01-01

    Rakesh K. Kapania, a professor in the Department of Aerospace and Ocean Engineering in the College of Engineering at Virginia Tech, was appointed the Norris and Laura Mitchell Professor of Aerospace Engineering by the Virginia Tech Board of Visitors during the board's quarterly meeting March 31.

  16. Use of RateMyProfessors.com Data as a Supplemental Tool for the

    Science.gov (United States)

    Bergin, Adam; Sharp, Kevan; Gatlin, Todd A.; Villalta-Cerdas, Adrian; Gower, Austin; Sandi-Urena, Santiago

    2013-01-01

    Commercial online instructor evaluations have gained traction in influencing students' decisions on professor and course selections at universities. RateMyProfessors.com (RMP) is the most popular of such evaluation tools and houses a wealth of information from the students' viewpoint. The purpose of this study was to determine whether RMP data…

  17. From movement to models: a tribute to professor Alan G. Hannam

    NARCIS (Netherlands)

    Hylander, W.L.; McMillan, A.S.; Lam, E.W.N.; Watanabe, M.; Langenbach, G.E.J.; Stavness, I.; Peck, C.C.; Palla, S.

    2008-01-01

    This tribute article to Professor Alan G. Hannam is based on 7 presentations for him at the July 1, 2008 symposium honoring 3 "giants" in orofacial neuroscience: Professors B.J. Sessle, J.P. Lund, and A.G. Hannam. This tribute to Hannam’s outstanding career draws examples from his 40-year academic

  18. Discurso da autoajuda na formação do professor de língua

    Directory of Open Access Journals (Sweden)

    Wagner Rodrigues SILVA

    2013-10-01

    Full Text Available Este trabalho investiga a interferência do discurso de autoajuda nas representações de professor, construídas por alunos-mestres no contexto de formação de professores de língua. O embasamento teórico ancora-se no conceito de transdisciplinaridade como um fator central para a prática científica pós-moderna em Linguística Aplicada. Os resultados mostram que os discursos da autoajuda responsabilizam os professores tanto pelo sucesso quanto pelo fracasso de seus aprendizes. Consequentemente, o uso desse tipo de linguagem, durante os cursos de treinamento de professores, pode camuflar o empoderamento do professor, o que, por sua vez, pode comprometer a sua formação

  19. CERN 50th Anniversary Official Celebration : keynote speech from Professor Federico Mayor Zaragoza, Professor in the Molecular Biology at the Universidad Autónoma of Madrid, Former Director-General of UNESCO

    CERN Document Server

    Blanc

    2004-01-01

    CERN 50th Anniversary Official Celebration : keynote speech from Professor Federico Mayor Zaragoza, Professor in the Molecular Biology at the Universidad Autónoma of Madrid, Former Director-General of UNESCO

  20. Summer students and professor from the United Arab Emirates - from left to right : Alya Ali Binghurair, Shaikha Al Kalbani, Professor Chafia Hejase de Trad, Mariam Al Hassani, Aminah Al Abdouli.

    CERN Multimedia

    Maximilien Brice

    2004-01-01

    Summer students and professor from the United Arab Emirates - from left to right : Alya Ali Binghurair, Shaikha Al Kalbani, Professor Chafia Hejase de Trad, Mariam Al Hassani, Aminah Al Abdouli.

  1. visit of Members of the ETH Foundation, accompanied by Professor Heidi Wunderli-Allenspach, Rektorin, ETH Zürich and Professor Roman Boutellier, Vizepräsident Personal und Ressourcen, Switzerland, on Tuesday, 24th February 2009.

    CERN Multimedia

    Maximilien Brice

    2009-01-01

    visit of Members of the ETH Foundation, accompanied by Professor Heidi Wunderli-Allenspach, Rektorin, ETH Zürich and Professor Roman Boutellier, Vizepräsident Personal und Ressourcen, Switzerland, on Tuesday, 24th February 2009.

  2. COIN Project: Towards a zero-waste technology for concrete aggregate production in Norway

    Science.gov (United States)

    Cepuritis, Rolands; Willy Danielsen, Svein

    2014-05-01

    COIN Project: Towards a zero-waste technology for concrete aggregate production in Norway Rolands Cepuritis, Norcem/NTNU and Svein Willy Danielsen, SINTEF Aggregate production is a mining operation where no purification of the "ore" is necessary. Still it is extremely rare that an aggregate production plant is operating on the basis of zero-waste concept. This is since historically the fine crushed aggregate (particles with a size of less than 2, 4 or sometimes 8 mm) has been regarded as a by-product or waste of the more valuable coarse aggregate production. The reason is that the crushed coarse aggregates can easily replace coarse rounded natural stones in almost any concrete composition; while, the situation with the sand is different. The production of coarse aggregate normally yields fine fractions with rough surface texture, flaky or elongated particles an inadequate gradation. When such a material replaces smooth and rounded natural sand grains in a concrete mix, the result is usually poor and much more water and cement has to be used to achieve adequate concrete flow. The consequences are huge stockpiles of the crushed fine fractions that can't be sold (mass balance problems) for the aggregate producers, sustainability problems for the whole industry and environmental issues for society due to dumping and storing of the fine co-generated material. There have been attempts of utilising the material in concrete before; however, they have mostly ended up in failure. There have been attempts to adjust the crushed sand to the properties of the natural sand, which would still give a lot of waste, especially if the grading would have to be adjusted and the high amounts of fines abundantly present in the crushed sand would have to be removed. Another fundamental reason for failure has been that historically such attempts have mainly ended up in a research carried out by people (both industrial and academic) with aggregate background (= parties willing to find market

  3. O papel da instituição para escolher, acolher e acompanhar ao professor universitário

    OpenAIRE

    da Silva Marques Ferreira, Maria de Lourdes

    2011-01-01

    Objective. To analyze the role of the institution in choosing, receiving and chaperone professors. Methodology. Qualitative study, which body analysis was composed of 32 participations in a thematic forum of a group of nine health professionals. Results. After professor hiring it is necessary to receive and chaperone him. Professors with longer time in the institution represent a more important role in the admission of the new professor. Chaperone process is an opportunity to change and redef...

  4. Chlamydia trachomatis Infection and Anti-Hsp60 Immunity: The Two Sides of the Coin

    Science.gov (United States)

    Cappello, Francesco; Conway de Macario, Everly; Di Felice, Valentina; Zummo, Giovanni; Macario, Alberto J. L.

    2009-01-01

    Chlamydia trachomatis (CT) infection is one of the most common causes of reproductive tract diseases and infertility. CT-Hsp60 is synthesized during infection and is released in the bloodstream. As a consequence, immune cells will produce anti-CT-Hsp60 antibodies. Hsp60, a ubiquitous and evolutionarily conserved chaperonin, is normally sequestered inside the cell, particularly into mitochondria. However, upon cell stress, as well as during carcinogenesis, the chaperonin becomes exposed on the cell surface (sf-Hsp60) and/or is secreted from cells into the extracellular space and circulation. Reports in the literature on circulating Hsp and anti-Hsp antibodies are in many cases short on details about Hsp60 concentrations, and about the specificity spectra of the antibodies, their titers, and their true, direct, pathogenetic effects. Thus, more studies are still needed to obtain a definitive picture on these matters. Nevertheless, the information already available indicates that the concurrence of persistent CT infection and appearance of sf-Hsp60 can promote an autoimmune aggression towards stressed cells and the development of diseases such as autoimmune arthritis, multiple sclerosis, atherosclerosis, vasculitis, diabetes, and thyroiditis, among others. At the same time, immunocomplexes composed of anti-CT-Hsp60 antibodies and circulating Hsp60 (both CT and human) may form deposits in several anatomical locations, e.g., at the glomerular basal membrane. The opposite side of the coin is that pre-tumor and tumor cells with sf-Hsp60 can be destroyed with participation of the anti-Hsp60 antibody, thus stopping cancer progression before it is even noticed by the patient or physician. PMID:19714222

  5. Chlamydia trachomatis infection and anti-Hsp60 immunity: the two sides of the coin.

    Directory of Open Access Journals (Sweden)

    Francesco Cappello

    2009-08-01

    Full Text Available Chlamydia trachomatis (CT infection is one of the most common causes of reproductive tract diseases and infertility. CT-Hsp60 is synthesized during infection and is released in the bloodstream. As a consequence, immune cells will produce anti-CT-Hsp60 antibodies. Hsp60, a ubiquitous and evolutionarily conserved chaperonin, is normally sequestered inside the cell, particularly into mitochondria. However, upon cell stress, as well as during carcinogenesis, the chaperonin becomes exposed on the cell surface (sf-Hsp60 and/or is secreted from cells into the extracellular space and circulation. Reports in the literature on circulating Hsp and anti-Hsp antibodies are in many cases short on details about Hsp60 concentrations, and about the specificity spectra of the antibodies, their titers, and their true, direct, pathogenetic effects. Thus, more studies are still needed to obtain a definitive picture on these matters. Nevertheless, the information already available indicates that the concurrence of persistent CT infection and appearance of sf-Hsp60 can promote an autoimmune aggression towards stressed cells and the development of diseases such as autoimmune arthritis, multiple sclerosis, atherosclerosis, vasculitis, diabetes, and thyroiditis, among others. At the same time, immunocomplexes composed of anti-CT-Hsp60 antibodies and circulating Hsp60 (both CT and human may form deposits in several anatomical locations, e.g., at the glomerular basal membrane. The opposite side of the coin is that pre-tumor and tumor cells with sf-Hsp60 can be destroyed with participation of the anti-Hsp60 antibody, thus stopping cancer progression before it is even noticed by the patient or physician.

  6. REDES SOCIAIS E FORMAÇÃO DE PROFESSORES

    Directory of Open Access Journals (Sweden)

    Gilmara Teixeira Barcelos

    2012-09-01

    Full Text Available Os desafios estabelecidos pelas inovações tecnológicas ao processo educativo são muitos e diversas são as alternativas de práticas pedagógicas que envolvem o uso das mesmas. Nessa perspectiva, esta conferência visa a apresentar uma pesquisa que discute a prática pedagógica alicerçada nas tecnologias digitais (TD como instrumentos mediadores. Considerando que a formação de professores é um processo contínuo, foi elaborada uma proposta de formação, para os egressos da licenciatura em Matemática de um Instituto Federal, no início de sua prática docente . A proposta foi denominada T-PROIM – Tecnologias na Prática docente de pROfessores Iniciantes de Matemática. Uma rede social na Internet (RSI foi implementada por meio da plataforma Elgg para apoiar a referida formação. Essa visou a possibilitar a integração das TD à prática docente e fundamentou-se na teoria sócio-histórica. A pesquisa foi descritiva e explicativa, por meio de um estudo de caso e a abordagem foi, predominantemente, qualitativa. As técnicas de coleta de dados foram questionário, entrevistas, observação e registro dos conteúdos postados na RSI. Para tanto, inicialmente, caracterizam-se redes sociais na internet. A seguir, são apresentados os aspectos metodológicos, as características da formação T-PROIM e a análise macro da experimentação da referida formação. Finalizando, são tecidas algumas considerações sobre a pesquisa. A flexibilidade da formação e da configuração de recursos RSI foi considerada importante para o contexto educacional. Além disso, a análise possibilitou identificar que a confiança no uso pedagógico das TD aumentou e que a formação contribuiu para o desenvolvimento pessoal, social e cognitivo.

  7. Combining non-destructive nuclear techniques to study Roman leaded copper coins from Ilipa (II–I centuries B.C.)

    International Nuclear Information System (INIS)

    Moreno-Suárez, A.I.; Gómez-Tubío, B.; Respaldiza, M.A.; Chaves, F.; Ortega-Feliu, I.; Ontalba-Salamanca, M.Á.; Ager, F.J.

    2011-01-01

    A set of 32 bronze coins (II–I centuries B.C.) from the Roman city of Ilipa Magna (present-day Alcalá del Río, Seville) have been analyzed by means of non-destructive techniques. These coins are classified in different series according to their numismatic characteristics. They are very interesting from the archaeological point of view because a freshwater fish is depicted on the obverse (unusual in Mediterranean Cultures) and a spike on the reverse (also unusual but frequent in the South of the Iberian Peninsula). A comparative study has been made by PIXE (Proton Induced X-ray Emission) and XRF (X-ray Fluorescence) both corrected by GRT (Gamma Ray Transmission) in order to avoid the polishing of the coins. The results show that after the correction with GRT both independent methods give compatible concentrations for all of the coins that can be assumed as the actual bulk compositions . The average concentrations of the different series have been calculated and they could help to classify the series of coins chronologically.

  8. His Excellency Professor Dr Che-Ho Wei, Chairman, National Science Council Executive Yuan, Republic of China

    CERN Multimedia

    Patrice Loïez

    2002-01-01

    Photo 01: Professor Dr. Che-Ho Wei signing the Guest Book with CERN Director-General, L. Maiani. Photo 02: Professor Dr. Che-Ho Wei. Photo 03::Professor Dr. Che-Ho Wei shaking hands with CERN Director-General, L. Maiani.

  9. Professor in Residence: An Innovative Academic-Practice Partnership.

    Science.gov (United States)

    Hinic, Katherine; Kowalski, Mildred Ortu; Silverstein, Wendy

    2017-12-01

    This article describes an academic-practice partnership between an American Nurses Credentialing Center Magnet ® -designated hospital and an academic nurse educator that has increased the hospital's capacity for research, evidence-based practice, and support for nurses continuing their education. Through close collaboration with the full-time nurse researcher and members of the nursing education department, the professor in residence consults with clinical staff to support completion of research and evidence-based practice projects. The collaboration also has resulted in the development of a formal year-long mentoring program for clinical nurses in the area of evidence-based practice. Individual support and academic consults are offered to nurses enrolled in school to promote advancement of nurses' educational level. This collaboration has been beneficial for both the hospital and the university, increasing the capacity for scholarly activities for nurses in the hospital and serving as a forum for ongoing faculty practice and scholarship. J Contin Educ Nurs. 2017;48(12):552-556. Copyright 2017, SLACK Incorporated.

  10. Professor John Scott, folate and neural tube defects.

    Science.gov (United States)

    Hoffbrand, A Victor

    2014-02-01

    John Scott (1940-2013) was born in Dublin where he was to spend the rest of his career, both as an undergraduate and subsequently Professor of Biochemistry and Nutrition at Trinity College. His research with the talented group of scientists and clinicians that he led has had a substantial impact on our understanding of folate metabolism, mechanisms of its catabolism and deficiency. His research established the leading theory of folate involvement with vitamin B12 in the pathogenesis of vitamin B12 neuropathy. He helped to establish the normal daily intake of folate and the increased requirements needed either in food or as a supplement before and during pregnancy to prevent neural tube defects. He also suggested a dietary supplement of vitamin B12 before and during pregnancy to reduce the risk of neural tube defects. It would be an appropriate epitaph if fortification of food with folic acid became mandatory in the UK and Ireland, as it is in over 70 other countries. © 2013 John Wiley & Sons Ltd.

  11. Knowledge and views of professors of nutrition about food irradiation

    International Nuclear Information System (INIS)

    Silva, Kelly Daiane; Braga, Vilma de Oliveira; Quintaes, Kesia Diego

    2010-01-01

    Food irradiation is an efficient technology that can be used in the conservation of foods. However, consumers' knowledge about irradiated foods has proved insufficient resulting in low acceptance of such foods. Considering that dietitians and nutritionists are the qualified health professionals to guide patients and consumers towards the ingestion and selection of foods, this study aims to evaluate the knowledge and views about radiated foods of professors of nutrition working in higher education institutions in the city of Belo Horizonte - MG, Brazil. A total of 86.4% out of the 66 participants had general knowledge about irradiated foods. However, 71.2% were not familiar with the process, 75.8% were totally unaware of the specific legislation, 21.2% were not sure of the purposes of irradiation, 12.1% considered irradiated foods radioactive, and 31.8% believed that food irradiation results in the reduction of the nutritional value of foods. Irradiated foods would not be rejected by professionals with Ph.D. degree, but they would be rejected by five masters and six experts questioned. The study concluded that the current higher education of future dietitians and nutritionists has been provided without the minimum necessary knowledge regarding irradiated foods corroborating the negative view of consumers about this kind of food. (author)

  12. Espelhos, estrelas e revoluções: narrativas de professores

    Directory of Open Access Journals (Sweden)

    Oliveira, Maria Lucia Cunha Lopes de

    2002-01-01

    Full Text Available Neste texto pretendo contribuir para o estudo das relações entre histórias de vida e trabalho de professores, a construção de sua identidade docente e as práticas pedagógicas que desenvolvem. A partir de uma perspectiva qualitativa e colaborativa na investigação de fenômenos educacionais, a pesquisa se inscreve como "espelho" em que se refletem saberes emancipatórios, saudáveis revoluções, ações instituintes relacionadas à construção de uma pedagogia reflexiva e criativa. A socialização dessas experiências pode ser relevante para a compreensão de avanços, dificuldades e desafios relacionados à profissão docente, particularmente á articulação entre o biográfico e o contexto, a subjetividade dos educadores e as condições objetivas de vida e trabalho

  13. comparação entre professores do ensino público e privado

    OpenAIRE

    Silva, Ana Vanessa Pereira

    2016-01-01

    Face à atual conjuntura de grande volatilidade nas políticas no sector educativo, é fundamental perceber quais as consequências das mudanças sociais e curriculares na vida dos professores. Existe um interesse geral por parte dos meios de comunicação social, professores, sindicatos e opinião pública sobre o estado da Educação em Portugal e sobre a problemática do stress profissional dos professores. Vários estudos de âmbito nacional e internacional têm vindo a assinalar os efeitos destas mu...

  14. An Interview with Professor Melquíades de Dios Leyva, December 2008

    Science.gov (United States)

    Arias de Fuentes, Olimpia

    When writing about the history of physics in Cuba, this remarkable professor of quantum mechanics must be mentioned, for he embodies a most genuine example of the turn taken by national educational policy after 1959: Education for all, at all levels, with no discrimination or elitism. The following is an interview granted by Dr. Melquíades de Dios Leyva, Outstanding Full Professor of the Physics Faculty of the University of Havana, to Dr. Olimpia Arias de Fuentes, Associate Professor at the same, and Senior Researcher of the Institute of Materials Science and Technology (IMRE) of the University of Havana.

  15. Student teachers can be as good as associate professors in teaching clinical skills

    DEFF Research Database (Denmark)

    Tolsgaard, Martin G; Gustafsson, Amandus; Rasmussen, Maria B

    2007-01-01

    AIM: The aim of this study is to compare student teachers and clinical associate professors regarding the quality of procedural skills teaching in terms of participants' technical skills, knowledge and satisfaction with the teaching. METHODS: This is an experimental, randomized, controlled study....... CONCLUSION: Trained student teachers can be as good as associate professors in teaching clinical skills. Udgivelsesdato: 2007-Sep...... comparing the teaching of student teachers and associate professors regarding participants' learning outcome and satisfaction with the teaching. Two skills are chosen for the experiment, i.v.-access and bladder catheterization. Learning outcome is assessed by a pre- and post testing of the participants...

  16. O PROFESSOR DAS ESCOLAS DO CAMPO: TRABALHADOR DE MÚLTIPLAS JORNADAS DE TRABALHO

    OpenAIRE

    Odimar J. Peripolli; Alceu Zoia

    2014-01-01

    As crescentes transformações socioeconômicas e o desenvolvimento do modo de produção têm provocado mudanças significativas no mundo do trabalho. As mudanças se fazem sentir também na escola. Neste trabalho nos propomos trazer para a reflexão um pouco da realidade da educação do campo, mais especificamente, as condições de trabalho do professor. Trabalhador dividido entre os muitos afazeres. Na roça: o camponês-professor e, na escola/ sala de aula: o professor-camponês. Em ambas as atividades,...

  17. Report of the Defense Science Board Task Force on Defense Intelligence - Counterinsurgency (COIN) Intelligence, Surveillance, and Reconnaissance (ISR) Operations

    Science.gov (United States)

    2011-02-01

    Thomas,  Jason.  “The  Cognitive   Dissonance   of COIN: Right Doctrine, Wrong War.” Small  Wars Journal (13 August 2010).  Thompson, Gary H. and David...no  mechanisms  for  systematically recording and following up on the  satisfaction  of intelligence requirements as  they  pertain  to  the

  18. Energy dispersive X-ray fluorescence analysis of ancient coins: The case of Greek silver drachmae from the Emporion site in Spain

    International Nuclear Information System (INIS)

    Pitarch, A.; Queralt, I.

    2010-01-01

    Greek colonizers arrived at the Iberian Peninsula at the beginning of the sixth century B.C. and founded a small colony known as Emporion in north-east Spain. By the fifth century B.C., this colony became a small polis with a well-organized administrative structure. In this context, the necessity of coinage was a fact and the first coins were minted. Some of these coins were characterized by using energy dispersive X-ray fluorescence equipment. The analytical study focused on the elemental characterization of the coins minted from the fourth century to the first century B.C. and their compositional evolution during this period. The investigation has pointed out a very high fineness of the alloys throughout the time, with an average silver content around 98.32%, and the feasibility of energy dispersive X-ray fluorescence as a screening tool for the characterization of the alloys.

  19. Elemental analysis of the ancient bronze coins by x-ray fluorescence technique using simultaneously radioisotope source and x-ray tube

    International Nuclear Information System (INIS)

    Nguyen The Quynh; Truong Thi An; Tran Duc Thiep; Nguyen Dinh Chien; Dao Tran Cao; Nguyen Quang Liem

    2004-01-01

    The results on elemental analysis of the Vietnamese ancient bronze coins during the time of the Nguyen dynasty (19th century) are presented. The samples were provided by the vietnam National Historical Museum and the elemental analysis was performed on the home-made model EDS-XT-99-01 X-ray fluorescence spectrometer in the Institute of Materials Science, NCST of Vietnam. The samples exited simultaneously by radioisotope source and X-ray tube. The analytical results show the similarity in the elemental composition of the coins issued by different kings of the Nguyen dynasty, but there is the difference in the concentration of the used elements. Another interesting point is that all the coins have zinc (Zn) in their composition, which shows clearly the influence of the occidental metallurgical technology on the money-making technique in Vietnam during the 19th century. (author)

  20. Dedication to Professor Hazel Prichard BSc, PhD, MBA (1954-2017)

    Science.gov (United States)

    Hall, Ian; Maier, Wolfgang; Barnes, Stephen J.

    2017-11-01

    The final section of this special issue of GCA on highly siderophile elements is dedicated to Professor Hazel Prichard (see Fig. 1) who sadly passed away in Cardiff on 1st January, 2017, after a brave battle with cancer.