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Sample records for niels bohr archive

  1. Niels Bohr before/After

    International Nuclear Information System (INIS)

    Lurcat, F.

    1991-01-01

    Physics Nobel Price in 1922, Niels Bohr is the atomic modern theory inventor. He was Einstein friend and opponent. Niels Bohr never accepted that the physics became incomprehensible. Bohr was also a philosophe, and his theses ask to be explained. This book intends to non specialists [fr

  2. A tribute to Niels Bohr

    International Nuclear Information System (INIS)

    1985-01-01

    This report is organized around the contribution of A. Pais, 'Niels Bohr and the development of physics', presented at CERN on the occasion of a special colloquium in the honour of Niels Bohr. It gives a broad survey of Bohr's life, the revolution in physics created by his quantum theory and his attempts to influence the peaceful development of nuclear energy. (orig.)

  3. Address at the opening session of the Niels Bohr Symposium

    International Nuclear Information System (INIS)

    Mayor, F.

    1998-01-01

    In his address at the opening session of the Niels Bohr Symposium organized jointly by UNESCO and the Niels Bohr Institute in Copenhagen in May 1998 in order to examine the latest developments in key fields of physics, the Director General of UNESCO presented the scientific work and the spirit of Niels Bohr, emphasizing the impact of his discoveries for new openings in science and in society in general

  4. Niels Bohr and the philosophy of physics twenty-first century perspectives

    CERN Document Server

    Folse, Henry

    2017-01-01

    Niels Bohr and Philosophy of Physics: Twenty-First Century Perspectives examines the philosophical views, influences and legacy of the Nobel Prize physicist and philosophical spokesman of the quantum revolution, Niels Bohr. The sixteen contributions in this collection by some of the best contemporary philosophers and physicists writing on Bohr's philosophy today all carefully distinguish his subtle and unique interpretation of quantum mechanics from views often imputed to him under the banner of the “Copenhagen Interpretation.” With respect to philosophical influences on Bohr's outlook, the contributors analyse prominent similarities between his viewpoint and Kantian ways of thinking, the views of the Danish philosopher Harald Høffding, and themes characteristic of American pragmatism. In recognizing the importance of Bohr's epistemological naturalism they examine his defence of the indispensability of classical concepts from a variety of different perspectives. This collection shows us that Bohr's int...

  5. Niels Bohr collected works, volume 9: Nuclear physics (1929-1952)

    International Nuclear Information System (INIS)

    Peierls, R.

    1985-01-01

    This volume deals with Bohr's work on nuclear physics which began in the pre-1932 days with his thinking deeply, but inconclusively about the seeming contradictions then presented by the evidence about the nucleus. In 1936 Bohr recognized and described the insights provided by neutron scattering experiments and the excitement of this new understanding and its extension and consolidation occupied much of the subsequent years. In 1939 he was again first in understanding the essential features of the newly discovered phenomenon of fission, applying successfully the point of view of nuclear reactions which he had developed over the past three years. Later, in 1949-50, he was impressed by the success of the nuclear shell model, which on the face of it seemed hard to reconcile with the picture of the closely interacting nucleons which he had pioneered in 1936 and he put much effort into clarifying this paradox. As in earlier volumes the published papers are supported by appropriate selections from unpublished notes and drafts, and by relevant correspondence. CONTENTS: Foreword. Part I: Papers and Manuscripts Related to Nuclear Physics. Part II: Selected Correspondence (1929-1949). Inventory of Relevant Manuscripts in the Niels Bohr Archive. Index

  6. Atoms, metaphors and paradoxes Niels Bohr and the construction of a new physics

    CERN Document Server

    Petruccioli, Sandro

    2006-01-01

    This book gives a detailed study of the development and the interpretation given to Niels Bohr's Principle of Correspondence. It also describes the role that this principle played in guiding Bohr's research over the critical period from 1920 to 1927. Quantum mechanics, developed in the 1920s and 1930s by Bohr, Heisenberg, Born, Schrödinger and Dirac, represents one of the most profound turning points in science. This theory required a wholly new kind of physics in which many of the principles, concepts and models representing reality, that had formed the basis of classical physics since Galileo and Newton, had to be abandoned. This book re-examines the birth of quantum mechanics, in particular examining the development of crucial and original insights of Niels Bohr.

  7. The language of Orthodox theology & quantum mechanics: St Gregory Palamas and Niels Bohr

    DEFF Research Database (Denmark)

    Tanev, Stoyan

    2013-01-01

    The objective of this chapter is to provide an analytical framework that would enable the comparison of the ways of using words and language in the cases of St. Gregory Palamas and Niels Bohr. The main motivation will be to explore Christos Yannaras’ point about the opportunity of using quantum....... The focus on epistemological issues could be justified by the fact that both St. Gregory Palamas and Niels Bohr have been acknowledged for their epistemological insights....

  8. Niels Bohr - his life and scientific achievements

    International Nuclear Information System (INIS)

    Kailas, S.

    2013-01-01

    Niels Bohr, a Nobel laureate and a celebrated scientist of the 20th century is remembered for his lasting contributions to atomic and nuclear physics. His pioneering works on Energy loss by charged particles, the structure of the atom, the compound nucleus model and the mechanism of nuclear fission are indeed remarkable. In this article a brief account of his life and scientific achievements is provided. (author)

  9. Niels Bohr and Complementarity An Introduction

    CERN Document Server

    Plotnitsky, Arkady

    2012-01-01

    This book offers a discussion of Niels Bohr’s conception of “complementarity,” arguably his greatest contribution to physics and philosophy. By tracing Bohr’s work from his 1913 atomic theory to the introduction and then refinement of the idea of complementarity, and by explicating different meanings of “complementarity” in Bohr and the relationships between it and Bohr’s other concepts, the book aims to offer a contained and accessible, and yet sufficiently comprehensive account of Bohr’s work on complementarity and its significance.

  10. Complementarity beyond physics Niels Bohr's parallels

    CERN Document Server

    Bala, Arun

    2017-01-01

    In this study Arun Bala examines the implications that Niels Bohr’s principle of complementarity holds for fields beyond physics. Bohr, one of the founding figures of modern quantum physics, argued that the principle of complementarity he proposed for understanding atomic processes has parallels in psychology, biology, and social science, as well as in Buddhist and Taoist thought. But Bohr failed to offer any explanation for why complementarity might extend beyond physics, and his claims have been widely rejected by scientists as empty speculation. Scientific scepticism has only been reinforced by the naïve enthusiasm of postmodern relativists and New Age intuitionists, who seize upon Bohr’s ideas to justify anti-realist and mystical positions. Arun Bala offers a detailed defence of Bohr’s claim that complementarity has far-reaching implications for the biological and social sciences, as well as for comparative philosophies of science, by explaining Bohr’s parallels as responses to the omnipresence...

  11. The Life and Work of Niels Bohr – A Brief Sketch

    Indian Academy of Sciences (India)

    IAS Admin

    Niels Henrik David Bohr was born to affluent parents on. 7 October 1885 in ... two years older; while his brother Harald, to whom he was ... sions from a very young age. ... married on 1 August 1912, the beginning of a 50-year relationship.

  12. Love, literature and the quantum atom Niels Bohr's 1913 trilogy revisited

    CERN Document Server

    Aaserud, Finn

    2013-01-01

    Niels Bohr ranks with Einstein among the physicists of the 20th century. He rose to this status through his invention of the quantum theory of the atom and his leadership in its defense and development. He also ranks with Einstein in his humanism and his sense of responsibility to his science and the society that enabled him to create it. Our book presents unpublished excerpts from extensive correspondence between Bohr and his immediate family, and uses it to describe and analyze the psychological and cultural background to his invention. The book also contains a reprinting of the three papers of 1913 - the "Trilogy" - in which Bohr worked out the provisional basis of a quantum theory of the atom.

  13. Niels Bohr. Physicist and philospher of the atomic era

    International Nuclear Information System (INIS)

    Fischer, Ernst Peter

    2012-01-01

    The physicist and Nobel-prize carrier Niels Bohr (1885-1962) changed by his research our view to the world. By his atomic model for the first time the stability of matter could be explained, but simultaneously the atomic physics and nuclear technique based on this made our world so dangerous as never before. In an impressive portrait Ernst Peter Fischer describes the life and action of this fascinating man, his great physical finding, as well as his political engagement.

  14. Il danese tranquillo Niels Bohr, un fisico e il suo tempo, 1885-1962

    CERN Document Server

    Pais, Abraham

    1993-01-01

    Niels Bohr è una figura centrale nella fisica del Novecento, padre fondatore della teoria atomica e della meccanica quantistica. La storia della sua vita, ricca e piena anche sul piano affettivo e personale, non può dunque ridursi a un resoconto dei suoi successi scientifici e Pais, allievo e poi amico di Bohr, ne è perfettamente consapevole. Il libro si sviluppa su vari piani: capitoli strettamente biografici o storico-scientifici si alternano a discussioni sulle idee di Bohr in campo politico e filosofico, sui suoi rapporti con Einstein, sul suo ruolo nei drammatici anni della guerra e su molti altri aspetti della vicenda umana.

  15. Paul Ehrenfest, Niels Bohr, and Albert Einstein: Colleagues and Friends

    Science.gov (United States)

    Klein, Martin J.

    2010-09-01

    In May 1918 Paul Ehrenfest received a monograph from Niels Bohr in which Bohr had used Ehrenfest's adiabatic principle as an essential assumption for understanding atomic structure. Ehrenfest responded by inviting Bohr, whom he had never met, to give a talk at a meeting in Leiden in late April 1919, which Bohr accepted; he lived with Ehrenfest, his mathematician wife Tatyana, and their young family for two weeks. Albert Einstein was unable to attend this meeting, but in October 1919 he visited his old friend Ehrenfest and his family in Leiden, where Ehrenfest told him how much he had enjoyed and profited from Bohr's visit. Einstein first met Bohr when Bohr gave a lecture in Berlin at the end of April 1920, and the two immediately proclaimed unbounded admiration for each other as physicists and as human beings. Ehrenfest hoped that he and they would meet at the Third Solvay Conference in Brussels in early April 1921, but his hope was unfulfilled. Einstein, the only physicist from Germany who was invited to it in this bitter postwar atmosphere, decided instead to accompany Chaim Weizmann on a trip to the United States to help raise money for the new Hebrew University in Jerusalem. Bohr became so overworked with the planning and construction of his new Institute for Theoretical Physics in Copenhagen that he could only draft the first part of his Solvay report and ask Ehrenfest to present it, which Ehrenfest agreed to do following the presentation of his own report. After recovering his strength, Bohr invited Ehrenfest to give a lecture in Copenhagen that fall, and Ehrenfest, battling his deep-seated self-doubts, spent three weeks in Copenhagen in December 1921 accompanied by his daughter Tanya and her future husband, the two Ehrenfests staying with the Bohrs in their apartment in Bohr's new Institute for Theoretical Physics. Immediately after leaving Copenhagen, Ehrenfest wrote to Einstein, telling him once again that Bohr was a prodigious physicist, and again

  16. Bohr and Dirac*

    Indian Academy of Sciences (India)

    IAS Admin

    We present an account of the work of Niels Bohr and Paul Dirac, their interactions and personal- ities. 1. Introduction. In this essay I would like to convey to my readers some- thing about the personalities and work of Niels Bohr and Paul Dirac, juxtaposed against one another. Let me hope that the portraits I will paint of these ...

  17. A tribute to Niels Bohr

    International Nuclear Information System (INIS)

    Kubbinga, H.

    2008-01-01

    The 3 most important scientific achievements of N.Bohr follow. First, the Bohr-Rutherford atomic model in which Thomson's electrons, Rutherford's nucleus and Planck's quanta merged together to explain the line spectra of atoms. Secondly, the compound nucleus model in which Bohr explained nuclear reactions by the production of an intermediate state by the impact of an incident nucleus: the entering projectile would hit one or more nucleons, its energy and momentum being spread over them and after a while when one or more nucleons have acquired sufficient energy they escape from the compound nucleus. And thirdly, the drop model that presents the nucleus as behaving like a liquid, with modes of surface and volume oscillations of its own, ready to become excited isotopes by incoming neutrons. (A.C.)

  18. The Niels Bohr Archive is Placing Collections on its Website

    DEFF Research Database (Denmark)

    Aaserud, Finn

    2010-01-01

    this supplement, the documents of which we hope to make available on our website by 2013, the centennial for Bohr's model of the nuclear atom. We have found the task of digitizing our collections generally complex, sometimes frustrating, and in the end satisfying. At this stage it is particularly important...

  19. Des images et des paraboles : Niels Bohr et le discours descriptif en physique quantique

    Directory of Open Access Journals (Sweden)

    Ilias Yocaris

    2011-01-01

    Full Text Available Cette étude porte sur l’importance accordée aux images verbales dans le discours descriptif utilisé en mécanique quantique, et plus précisément sur la conception de la langue scientifique qui est celle de Niels Bohr (1885-1962 : en raison d’une série de considérations techniques, méthodologiques et épistémologiques que nous nous proposons d’analyser in extenso, Bohr considère effectivement que les phénomènes subatomiques ne peuvent être évoqués directement (sans référence au contexte observationnel, par le biais d’un langage dénotatif non figural, mais uniquement de manière métaphorique, détournée, ce qui réduit à ses yeux le discours descriptif des physiciens à « des images et des paraboles ». En examinant les textes de Bohr à la lumière d’un certain nombre de travaux épistémologiques, de commentaires et d’expérimentations auxquels ils ont donné lieu ultérieurement, nous nous proposons de décrire les implications conceptuelles d’une telle prise de position, qui constitue une vraie révolution sur le plan philosophique.

  20. Erik Rasmussen, Niels Bohr og Værdirelativismen - i anledning af Kasper Lippert-Rasmussens bog om Erik Rasmussen

    DEFF Research Database (Denmark)

    Ougaard, Morten

    2015-01-01

    En svaghed ved Kasper Lippert-Rasmussens i øvrigt udmærkede bog om Erik Rasmussen er, at den forbigår den sene Rasmussens bog om komplementaritet og statskundskab. Bogen var vigtig for Rasmussen, og den bør indgå i hans faglige eftermæle. Den rummer videnskabsteoretiske argumenter af stor relevans...... ikke mindst forholdet mellem normative og kognitive udsagn. Efter mødet med Niels Bohrs filosofi står Rasmussens værdirelativisme både skarpere og stærkere end før, og Kasper Lippert-Rasmussens karakteristik af denne position som et ubegrundet dogme i dansk politologi er ikke overbevisende....

  1. Niels Bohr and the Atomic Structure

    Indian Academy of Sciences (India)

    IAS Admin

    principle with the restriction that no more than two electrons occupy a given ... displacement laws. Early in his ... The only difference between them is their atomic weight. F Soddy ... validity, Bohr took his theory to Rutherford. Unfortunately,.

  2. Reading Bohr physics and philosophy

    CERN Document Server

    Plotnitsky, Arkady

    2006-01-01

    Reading Bohr: Physics and Philosophy offers a new perspective on Niels Bohr's interpretation of quantum mechanics as complementarity, and on the relationships between physics and philosophy in Bohr's work, which has had momentous significance for our understanding of quantum theory and of the nature of knowledge in general. Philosophically, the book reassesses Bohr's place in the Western philosophical tradition, from Kant and Hegel on. Physically, it reconsiders the main issues at stake in the Bohr-Einstein confrontation and in the ongoing debates concerning quantum physics. It also devotes greater attention than in most commentaries on Bohr to the key developments and transformations of his thinking concerning complementarity. Most significant among them were those that occurred, first, under the impact of Bohr's exchanges with Einstein and, second, under the impact of developments in quantum theory itself, both quantum mechanics and quantum field theory. The importance of quantum field theory for Bohr's thi...

  3. El pabellón Niels Bohr. Tradición Danesa y Modernidad

    Directory of Open Access Journals (Sweden)

    Carmen García Sánchez

    2015-12-01

    Full Text Available La casa de invitados de Niels Bohr fue el primer edificio del arquitecto danés Vilhelm Wohlert (1920-2007. Arraigado a la tradición danesa, representa una renovación basada en la absorción de influencias extranjeras: la arquitectura americana y la tradición japonesa. La caja de madera tiene el carácter sensible de un organismo vivo, siempre cambiante según las variaciones de luz del día o temperatura. Puertas plegables y contraventanas generan extensiones de las habitaciones. Cuando se abren, crean una prolongación del espacio interior, que se extiende a la naturaleza circundante, y se expande hacia el espacio exterior, permitiendo su movilización. Se establece una arquitectura de flujos. Protagoniza un ejemplo de la modernidad como refinamiento en la técnica de los límites y la idea de que la arquitectura no es un objeto material, sino el espacio generado en su interior. Podría ser visto como un ikebana; “el arte del espacio”, donde se produce una circulación de aire entre sus componentes; algo vivo que expresa la tercera dimensión, el equilibrio asimétrico, un interés por la materia, su textura y efecto emocional que emana. Hay armonía y equilibrio, que transmiten serenidad y belleza; un encuentro con la naturaleza; un mundo de relaciones amable al ser humano.

  4. EPR, kvantemekanik og Bohr

    OpenAIRE

    Nielsen, Morten Klockmann

    2007-01-01

    Dette projekt omhandler området hvor filosofi og fysik smelter sammen. Kvantemekanikkens tilblivelse fik en hård medfart hvilket diskussionerne mellem især Albert Einstein og Niels Bohr vidner om. De var hovedpersoner i striden om hvordan kvantemekanikken skulle fortolkes, og diskussionen kulminerede i 1935 hvor Einstein sammen med kollegerne Podolsky og Rosen offentliggjorde en artikel med titlen “Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?” (EPR-artiklen)....

  5. Development by Niels Bohr of the quantum theory of the atom and of the correspondence principle

    International Nuclear Information System (INIS)

    El'yashevich, M.A.

    1985-01-01

    Bohr's investigations in 1912-1923 on the quantum theory of atoms are considered. The sources of N. Bohr's works on this subject are analyzed, and the beginning of his quantum research in 1912 is described. A detailed analysis is given of N. Bohr's famous paper on the hydrogen atom theory and on the origin of spectra. The further development of Bohr's ideas on atomic structure is considered, special attention is being payed to his postulates of stationary states and of radiation transitions and to the development of the correspondence principle. It is shown how well N. Bohr understood the difficulties of the model theory and how be tried to obtain a deep understanding of quantum phenomena

  6. Niels Bohr's complementarity its structure, history, and intersections with hermeneutics and deconstruction

    CERN Document Server

    Katsumori, Makoto

    2011-01-01

    Through detailed textual and conceptual analysis, and with special attention to the potentially conflicting elements of Bohr's thought, this volume's fresh approach analyzes the relations between realism and antirealism through the prism of complementarity.

  7. Spectrum of hydrogen atom, Niels Bohr and their impact on contemporary science: a glimpse of modern spectroscopy

    International Nuclear Information System (INIS)

    Sastry, M.D.

    2013-01-01

    This contribution reviews developments in the atomic spectroscopy subsequent to Bohr's model. This follows a brief description of Bohr's model of hydrogen atom that accounts for sharp line spectra of hydrogen atom. The developments include the effects of electron and nuclear spins, spectroscopy of multi electron atom which involve electron-electron repulsion and different angular momentum coupling schemes. More recently, Bohr's atom model has found application to processes at nano dimensions of semiconducting materials. It has now become possible to create a hydrogen-like atom, an exciton, with its size comparable or even more than that of the particle it self. This brings in extra quantization and has profound effects on the motion of the particles involved viz electron and hole. (author)

  8. Darwinism in disguise? A comparison between Bohr's view on quantum mechanics and QBism.

    Science.gov (United States)

    Faye, Jan

    2016-05-28

    The Copenhagen interpretation is first and foremost associated with Niels Bohr's philosophy of quantum mechanics. In this paper, I attempt to lay out what I see as Bohr's pragmatic approach to science in general and to quantum physics in particular. A part of this approach is his claim that the classical concepts are indispensable for our understanding of all physical phenomena, and it seems as if the claim is grounded in his reflection upon how the evolution of language is adapted to experience. Another, recent interpretation, QBism, has also found support in Darwin's theory. It may therefore not be surprising that sometimes QBism is said to be of the same breed as the Copenhagen interpretation. By comparing the two interpretations, I conclude, nevertheless, that there are important differences. © 2016 The Author(s).

  9. Niels Hemmingsen

    DEFF Research Database (Denmark)

    Lausten, Martin Schwarz

    Præsentation af Niels Hemmingsen (1513-1600), hans biografi, forfatterskabet på ca. 100 skrifter og virke som professor i teologi ved Københavns universitet. Hans suspension i 1579 og forflyttelse til Roskilde skete efter pres fra kurfyrste August og hans hustru Anna,søster til Frederik d.2. Niel...

  10. Quantum Humor: The Playful Side of Physics at Bohr's Institute for Theoretical Physics

    Science.gov (United States)

    Halpern, Paul

    2012-09-01

    From the 1930s to the 1950s, a period of pivotal developments in quantum, nuclear, and particle physics, physicists at Niels Bohr's Institute for Theoretical Physics in Copenhagen took time off from their research to write humorous articles, letters, and other works. Best known is the Blegdamsvej Faust, performed in April 1932 at the close of one of the Institute's annual conferences. I also focus on the Journal of Jocular Physics, a humorous tribute to Bohr published on the occasions of his 50th, 60th, and 70th birthdays in 1935, 1945, and 1955. Contributors included Léon Rosenfeld, Victor Weisskopf, George Gamow, Oskar Klein, and Hendrik Casimir. I examine their contributions along with letters and other writings to show that they offer a window into some issues in physics at the time, such as the interpretation of complementarity and the nature of the neutrino, as well as the politics of the period.

  11. What is complementarity?: Niels Bohr and the architecture of quantum theory

    Science.gov (United States)

    Plotnitsky, Arkady

    2014-12-01

    This article explores Bohr’s argument, advanced under the heading of ‘complementarity,’ concerning quantum phenomena and quantum mechanics, and its physical and philosophical implications. In Bohr, the term complementarity designates both a particular concept and an overall interpretation of quantum phenomena and quantum mechanics, in part grounded in this concept. While the argument of this article is primarily philosophical, it will also address, historically, the development and transformations of Bohr’s thinking, under the impact of the development of quantum theory and Bohr’s confrontation with Einstein, especially their exchange concerning the EPR experiment, proposed by Einstein, Podolsky and Rosen in 1935. Bohr’s interpretation was progressively characterized by a more radical epistemology, in its ultimate form, which was developed in the 1930s and with which I shall be especially concerned here, defined by his new concepts of phenomenon and atomicity. According to this epistemology, quantum objects are seen as indescribable and possibly even as inconceivable, and as manifesting their existence only in the effects of their interactions with measuring instruments upon those instruments, effects that define phenomena in Bohr’s sense. The absence of causality is an automatic consequence of this epistemology. I shall also consider how probability and statistics work under these epistemological conditions.

  12. What is complementarity?: Niels Bohr and the architecture of quantum theory

    International Nuclear Information System (INIS)

    Plotnitsky, Arkady

    2014-01-01

    This article explores Bohr’s argument, advanced under the heading of ‘complementarity,’ concerning quantum phenomena and quantum mechanics, and its physical and philosophical implications. In Bohr, the term complementarity designates both a particular concept and an overall interpretation of quantum phenomena and quantum mechanics, in part grounded in this concept. While the argument of this article is primarily philosophical, it will also address, historically, the development and transformations of Bohr’s thinking, under the impact of the development of quantum theory and Bohr’s confrontation with Einstein, especially their exchange concerning the EPR experiment, proposed by Einstein, Podolsky and Rosen in 1935. Bohr’s interpretation was progressively characterized by a more radical epistemology, in its ultimate form, which was developed in the 1930s and with which I shall be especially concerned here, defined by his new concepts of phenomenon and atomicity. According to this epistemology, quantum objects are seen as indescribable and possibly even as inconceivable, and as manifesting their existence only in the effects of their interactions with measuring instruments upon those instruments, effects that define phenomena in Bohr’s sense. The absence of causality is an automatic consequence of this epistemology. I shall also consider how probability and statistics work under these epistemological conditions. (paper)

  13. Inspiration & Insight - a tribute to Niels Reeh

    Science.gov (United States)

    Ahlstrom, A. P.; Vieli, A.

    2009-12-01

    Niels Reeh was highly regarded for his contributions to glaciology, specifically through his rigorous combination of numerical modelling and field observations. In 1966 he began his work on the application of beam mechanics to floating glaciers and ice shelves and throughout his life, Niels retained a strong interest in modelling glacier dynamics. In the early 1980s Niels developed a 3D-model for ice sheets and in the late 1980s an advanced flow-line model. Niels Reeh also took part in the early ice-core drilling efforts in Greenland and later pioneered the concept of retrieving similar records from the surface of the ice-sheet margin. Mass balance of glaciers and ice sheets was another theme in Niels Reeh’s research, with a number of important contributions and insights still used when teaching the subject to students. Niels developed elegant models for ablation and snow densification, notable for their applicability in large-scale ice-sheet models and studied the impact of climate change on ice sheets and glaciers. Niels also took his interest in ice-dynamics and mass balance into remote sensing and worked successfully on methods to utilize radar and laser data from airborne surveys and satellites in glaciology. In this, he pioneered the combination of field experiments, satellite observations and numerical modelling to solve problems on the Greenland Ice Sheet. In this presentation we will attempt to provide an overview of Niels Reeh’s many-facetted career in acknowledgement of his contributions to the field of glaciology.

  14. Niels Bohr, Max Delbruck and the paradox of light and life

    International Nuclear Information System (INIS)

    Scott, G.P.

    1983-01-01

    This paper features a concise, interdisciplinary history of philosophical issues which were the basis of Delbruck's scientific career. The paradox in living behavior of freedom-to-adapt versus deterministic atomism required complete reassessment with the advent of quantum mechanics. Apparent contradictions implied, for example, by the wave-particle model led Bohr to a belief in the ''complementarity of nature,'' which in 1932 he applied to biology. His claim was that purely physicochemical explanations of purposeful life functions such as ''self-generation and freedom of the will'' were impossible since mutually exclusive situations were involved. Thus Delbruck was challenged to spend his career investigating these vital functions. Beginning with ''fruit-fly photochemistry'' he established the molecular nature of the gene and then collected a world-wide group for a research effort on phage virus, which culminated in discovery of the DNA double helix by Watson and Crick. The second phase of his career featured a study of the total stimulus-response system of the fungus Phycomuces, which is still in progress. The extreme light-sensitivity observed, approaching one-quantum response, has raised the question of the survival value of amplified quantum noise. In critical comments to the author, Delbruck opposed the ''Compton-switch model'' for mind-body interaction; and in his lecture, ''Mind from Matter?'' he revealed his ''a priori concept of truth,'' which embraces a neutral monism and rejects the language of emergent evolution. His views are contrasted with those expressed in Popper's First Darwin Lecture

  15. From correspondence to complementarity: The emergence of Bohr's Copenhagen interpretation of quantum mechanics

    Science.gov (United States)

    Tanona, Scott Daniel

    I develop a new analysis of Niels Bohr's Copenhagen interpretation of quantum mechanics by examining the development of his views from his earlier use of the correspondence principle in the so-called 'old quantum theory' to his articulation of the idea of complementarity in the context of the novel mathematical formalism of quantum mechanics. I argue that Bohr was motivated not by controversial and perhaps dispensable epistemological ideas---positivism or neo-Kantianism, for example---but by his own unique perspective on the difficulties of creating a new working physics of the internal structure of the atom. Bohr's use of the correspondence principle in the old quantum theory was associated with an empirical methodology that used this principle as an epistemological bridge to connect empirical phenomena with quantum models. The application of the correspondence principle required that one determine the validity of the idealizations and approximations necessary for the judicious use of classical physics within quantum theory. Bohr's interpretation of the new quantum mechanics then focused on the largely unexamined ways in which the developing abstract mathematical formalism is given empirical content by precisely this process of approximation. Significant consistency between his later interpretive framework and his forms of argument with the correspondence principle indicate that complementarity is best understood as a relationship among the various approximations and idealizations that must be made when one connects otherwise meaningless quantum mechanical symbols to empirical situations or 'experimental arrangements' described using concepts from classical physics. We discover that this relationship is unavoidable not through any sort of a priori analysis of the priority of classical concepts, but because quantum mechanics incorporates the correspondence approach in the way in which it represents quantum properties with matrices of transition probabilities, the

  16. I grandi della fisica da Platone a Heisenberg

    CERN Document Server

    Von Weizsäcker, Carl Friedrich

    2002-01-01

    Parmenide ; Platone ; Aristotele ; Copernico, Keplero, Galilei ; Galileo Galilei ; Cartesio ; Gottfried Wilhelm Leibniz ; Cartesio, Newton, Leibniz, Kant ; Immanuel Kant ; Johann Wolfgang Goethe ; Robert Meyer ; Albert Einstein ; Niels Bohr ; Paul Adrien Maurice Dirac ; Niels Bohr e Werner Heisenberg, un ricordo del 1932 ; Werner Heisenberg ; Heisenberg, fisico e filosofo ; l'interpretazione filosofica della fisica moderna.

  17. Resonance journal of science education

    Indian Academy of Sciences (India)

    IAS Admin

    Sketch made by Niels Bohr in 1944 to illustrate the content of his debate with Einstein on the uncertainty principle at the 6th Solvay Conference in 1930. Niels Bohr (1885–1962). Sketch by Homi Bhabha. (Courtesy: TIFR, Bombay). Front Cover. 871. Science Smiles. Ayan Guha. 876. Back Cover. 948. Classics. Biology and ...

  18. Timing and Impact of Bohr's Trilogy

    Science.gov (United States)

    Jeong, Yeuncheol; Wang, Lei; Yin, Ming; Datta, Timir

    2014-03-01

    In their article- Genesis of the Bohr Atom Heilbron and Kuhn asked - what suddenly turned his [Bohr's] attention, to atom models during June 1912- they were absolutely right; during the short period in question Bohr had made an unexpected change in his research activity, he has found a new interest ``atom'' and would soon produce a spectacularly successful theory about it in his now famous trilogy papers in the Phil Mag (1913). We researched the trilogy papers, Bohr`s memorandum, his own correspondence from that time in question and activities by Moseley (Manchester), Henry and Lawrence Bragg. Our work suggests that Bohr, also at Manchester that summer, was likely to have been inspired by Laue's sensational discovery in April 1912, of X-ray interference from atoms in crystals. The three trilogy papers include sixty five distinct (numbered) references from thirty one authors. The publication dates of the cited works range from 1896 to 1913. Bohr showed an extraordinary skill in navigating thru the most important and up-to date works. Eleven of the cited authors (Bohr included, but not John Nicholson) were recognized by ten Noble prizes, six in physics and four in chemistry.

  19. History of Science Web Resources at American Institute of Physics

    Science.gov (United States)

    Good, G. A.

    2009-12-01

    The Center for History of Physics and the associated Niels Bohr Library & Archives at the American Institute of Physics were pioneers in web resource development for education and for research in the 1990s. While these units of AIP continue to add significantly to the traditional ways of putting content before the public, they are also experimenting with blogs and Facebook, and are looking at other forms of interactive web presence. This talk explores how an active research center is trying to do both.

  20. WE-H-204-03: Part 2: History and Archives Resources at AIP for AAPM and Its Members

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, M. [AIP, College Park, MD (United States)

    2016-06-15

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  1. WE-H-204-02: Part 1: History and Archives Resources at AIP for AAPM and Its Members

    Energy Technology Data Exchange (ETDEWEB)

    Good, G. [AIP, College Park, MD (United States)

    2016-06-15

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  2. WE-H-204-03: Part 2: History and Archives Resources at AIP for AAPM and Its Members

    International Nuclear Information System (INIS)

    Mueller, M.

    2016-01-01

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  3. WE-H-204-02: Part 1: History and Archives Resources at AIP for AAPM and Its Members

    International Nuclear Information System (INIS)

    Good, G.

    2016-01-01

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  4. Recent developments in quantum field theory

    International Nuclear Information System (INIS)

    Ambjoern, J.; Petersen, J.L.; Durhuus, B.J.

    1985-01-01

    This is the second volume in a set of three containing the proceedings of 3 conferences held in Copenhagen, to mark the centennial of Niels Bohr. The purpose of this symposium was to bring together theoretical particle physicists to discuss the present status and, in particular, the latest developments in quantum field theory, in their broadest aspects. This volume contains the main 19 lectures and reflects the contemporary status of a line of development, one of whose initiators was Niels Bohr. (orig.)

  5. The Colliderscope: a real-time show

    CERN Multimedia

    Francesco Poppi

    2010-01-01

    Ninety-six LED lights distributed over the facade of the Niels Bohr Institute (NBI) in Blegdamsvej (Denmark) reproduce the actual signals coming from the Transition Radiation Detector (TRT) in ATLAS. Thanks to the Colliderscope, when a collision occurs below the ground in Geneva, people passing by in Blegdamsvej will be aware of it almost in real-time.   Niels Bohr Institute facade lit up to reflect the latest data from ATLAS-TRT . The pattern, intensity and duration of the Colliderscope’s flashes of light depend on the physical parameters of particles crossing the ATLAS TRT detector. “At the Colliderscope very little happens randomly”, explains Troels Petersen, a physicist at NBI and one of the people who conceived it. “Particularly interesting events, such as electrons, are shown by a bright light that remains on the facade for several seconds”. The Niels Bohr Institute has participated in the development of the TRT detector, and this is why t...

  6. Rutherford-Bohr atom

    Science.gov (United States)

    Heilbron, J. L.

    1981-03-01

    Bohr used to introduce his attempts to explain clearly the principles of the quantum theory of the atom with an historical sketch, beginning invariably with the nuclear model proposed by Rutherford. That was sound pedagogy but bad history. The Rutherford-Bohr atom stands in the middle of a line of work initiated by J.J. Thomson and concluded by the invention of quantum mechanics. Thompson's program derived its inspiration from the peculiar emphasis on models characteristic of British physics of the 19th century. Rutherford's atom was a late product of the goals and conceptions of Victorian science. Bohr's modifications, although ultimately fatal to Thomson's program, initially gave further impetus to it. In the early 1920s the most promising approach to an adequate theory of the atom appeared to be the literal and detailed elaboration of the classical mechanics of multiply periodic orbits. The approach succeeded, demonstrating in an unexpected way the force of an argument often advanced by Thomson: because a mechanical model is richer in implications than the considerations for which it was advanced, it can suggest new directions of research that may lead to important discoveries.

  7. Bohr vs. Einstein: Fortolkning af kvantemekanikken

    DEFF Research Database (Denmark)

    Andersen, Christian Kraglund; Wade, Andrew Christopher James

    2013-01-01

    Siden 1913, da Bohr fremlagde sin kvantemekaniske model for atomet, har fysikere diskuteret, hvordan kvan- temekanikken skal fortolkes. Specielt aktive i denne diskussion var Bohr og Einstein, som havde modstridende opfattelser af, hvordan kvantemekanikken skulle forstås. Kan katte være både...... levende og døde på samme tid? Kan vi teleportere partikler mellem Månen og Jorden? Disse spørgsmål, og mange flere, forsøgte Bohr og Einstein at besvare, og det vil vi ligeledes i denne artikel....

  8. House for Niels Strøyberg

    DEFF Research Database (Denmark)

    Welling, Helen

    2007-01-01

    The house for Niels Strøyberg in Hasseris near Aalborg, Denmark, is a notable example of early modernism in an unconventional way. Although Poul Henningsen's approach to the dwelling was thoroughly functional, he added a number of visual effects to provide a sense of dynamism to the spatial...

  9. Niels Bukh's gymnastics school in Denmark, 1912–1933

    DEFF Research Database (Denmark)

    Bonde, Hans

    2015-01-01

    Around 1916–1917 the Danish gymnastics pedagogue Niels Bukh (1880–1950) created, in an international sense, a revolutionary men's gymnastics, and in 1920 he established Denmark's and the world's first folk high school of physical education and sport. During the 1930s, Niels Bukh and his team...... of gymnasts first became a symbol for the dynamic Danish farming community, and then for the face of Denmark both at home and abroad. Bukh changed the stereotypical male expression of bodily dynamics, which in Danish rural gymnastics had been almost military. He made it legitimate for the young lads to get...

  10. A Symposium Associated with the Opening of the Play Copenhagen in Washington

    International Nuclear Information System (INIS)

    Schwartz, Brian

    2002-01-01

    On March 2, 2002 a special all day symposium was held in conjunction with the opening of the play Copenhagen in Washington. The play Copenhagen reenacts the 1941 visit of Werner Heisenberg, who was then in charge of the Nazi nuclear power program, to Niels Bohr, his mentor, and collaborator in creating quantum mechanics, complementarity, and the uncertainty principle, in German-occupied Denmark. The symposium entitled: THE COPENHAGEN INTERPRETATION: SCIENCE AND HISTORY ON STAGE was presented at the Baird Auditorium, in the National Museum of Natural History of the Smithsonian Institution. The program consisted of three two-hour sessions: (1) The Science of Copenhagen and its Influence of the 20th Century. (2) Bohr and Heisenberg: A strong Interaction. (3) Theater as Science ??? Science as Theater. The speakers included: Robert C. Card, Under Secretary of Energy; Ulrik Federspiel, Danish Ambassador to the US; John Marburger, III, Science Advisor President Bush; Jerome I. Friedman, MIT; Lene Vestergaard Hau, Harvard University; Richard Rhodes, Author; Rita Colwell, Director, NSF; Jeremy Bernstein, Author; Jochen H. Heisenberg, University of New Hampshire; Finn Aaserud, Director of the Niels Bohr Archive; Vilhelm A. Bohr, NIH; Thomas Powers, Author; Paul Lawrence Rose, Penn State University; Steven Barfield, University of Westminster, Jennifer Uphoff Gray, Associate Director, Copenhagen; Elizabeth Ireland McCann, Producer, Copenhagen; Lloyd Rose, Washington Post. Details of he program and useful information on the play Copenhagen are available on the web site http://web.gc.cuny.edu/ashp/nml/artsci/copenhagen.shtml . The complete symposium was video recorded and the set of 3 two-hour tapes can be obtained through the web site. The symposium was organized by Brian Schwartz, The Graduate Center, CUNY, Harry Lustig, Provost Emeritus at the City College of New York and Arthur Molella, Director, Lemelson Center, Smithsonian Institution. For further information contact Brian

  11. A Symposium Associated with the Opening of the Play Copenhagen in Washington

    Energy Technology Data Exchange (ETDEWEB)

    Schwartz, Brian

    2002-12-31

    On March 2, 2002 a special all day symposium was held in conjunction with the opening of the play Copenhagen in Washington. The play Copenhagen reenacts the 1941 visit of Werner Heisenberg, who was then in charge of the Nazi nuclear power program, to Niels Bohr, his mentor, and collaborator in creating quantum mechanics, complementarity, and the uncertainty principle, in German-occupied Denmark. The symposium entitled: THE COPENHAGEN INTERPRETATION: SCIENCE AND HISTORY ON STAGE was presented at the Baird Auditorium, in the National Museum of Natural History of the Smithsonian Institution. The program consisted of three two-hour sessions: (1) The Science of Copenhagen and its Influence of the 20th Century. (2) Bohr and Heisenberg: A strong Interaction. (3) Theater as Science ??? Science as Theater. The speakers included: Robert C. Card, Under Secretary of Energy; Ulrik Federspiel, Danish Ambassador to the US; John Marburger, III, Science Advisor President Bush; Jerome I. Friedman, MIT; Lene Vestergaard Hau, Harvard University; Richard Rhodes, Author; Rita Colwell, Director, NSF; Jeremy Bernstein, Author; Jochen H. Heisenberg, University of New Hampshire; Finn Aaserud, Director of the Niels Bohr Archive; Vilhelm A. Bohr, NIH; Thomas Powers, Author; Paul Lawrence Rose, Penn State University; Steven Barfield, University of Westminster, Jennifer Uphoff Gray, Associate Director, Copenhagen; Elizabeth Ireland McCann, Producer, Copenhagen; Lloyd Rose, Washington Post. Details of he program and useful information on the play Copenhagen are available on the web site http://web.gc.cuny.edu/ashp/nml/artsci/copenhagen.shtml . The complete symposium was video recorded and the set of 3 two-hour tapes can be obtained through the web site. The symposium was organized by Brian Schwartz, The Graduate Center, CUNY, Harry Lustig, Provost Emeritus at the City College of New York and Arthur Molella, Director, Lemelson Center, Smithsonian Institution. For further information contact Brian

  12. Einstein, Bohr, and Bell

    Science.gov (United States)

    Bellac, Michel Le

    2014-11-01

    The final form of quantum physics, in the particular case of wave mechanics, was established in the years 1925-1927 by Heisenberg, Schrödinger, Born and others, but the synthesis was the work of Bohr who gave an epistemological interpretation of all the technicalities built up over those years; this interpretation will be examined briefly in Chapter 10. Although Einstein acknowledged the success of quantum mechanics in atomic, molecular and solid state physics, he disagreed deeply with Bohr's interpretation. For many years, he tried to find flaws in the formulation of quantum theory as it had been more or less accepted by a large majority of physicists, but his objections were brushed away by Bohr. However, in an article published in 1935 with Podolsky and Rosen, universally known under the acronym EPR, Einstein thought he had identified a difficulty in the by then standard interpretation. Bohr's obscure, and in part beyond the point, answer showed that Einstein had hit a sensitive target. Nevertheless, until 1964, the so-called Bohr-Einstein debate stayed uniquely on a philosophical level, and it was actually forgotten by most physicists, as the few of them aware of it thought it had no practical implication. In 1964, the Northern Irish physicist John Bell realized that the assumptions contained in the EPR article could be tested experimentally. These assumptions led to inequalities, the Bell inequalities, which were in contradiction with quantum mechanical predictions: as we shall see later on, it is extremely likely that the assumptions of the EPR article are not consistent with experiment, which, on the contrary, vindicates the predictions of quantum physics. In Section 3.2, the origin of Bell's inequalities will be explained with an intuitive example, then they will be compared with the predictions of quantum theory in Section 3.3, and finally their experimental status will be reviewed in Section 3.4. The debate between Bohr and Einstein goes much beyond a

  13. Considerations about the atomic model of Bohr

    International Nuclear Information System (INIS)

    Levada, Celso Luis; Maceti, Huemerson; Lautenschleguer, Ivan Jose; De Magalhaes Oliveira Levada, Miriam

    2013-01-01

    The Bohr model, introduced in 1913, was the end result of very important work done by various scientists in the late nineteenth and early twentieth century. Isolated groups of investigators pursued different objectives and the genius Bohr led to a combination of a large number of knowledge to formulate the first hypothesis on the actual structure of the material.

  14. Considerations on Bohr's, Heisenberg's and Schroedinger's philosophy

    International Nuclear Information System (INIS)

    Shimony, A.

    1981-01-01

    In denying that the words 'physical reality' are meaningful without reference to an experimental arrangement, Bohr renounces any knowledge of the 'thing-in-itself'. However, the relation of his epistemology to both idealism and positivism remains obscure. Heisenberg departs from Bohr in enunciating a metaphysical implication of quantum mechanics. Heisenberg asserts that there is an intermediate modality -potentiality- between logical possibility and existence. His attempts to explain the transition from potentiality to existence are not convincing. Schroedinger rejects Bohr's interpretation of quantum mechanics as a positivist exercise and seeks instead a realist interpretation. Nevertheless, the metaphysics of Schroedinger is fundamentally idealistic, maintaining that the material aspect of the world is composed of the same elements as mind, but in a different order [fr

  15. Creation and development of Bohr's theory (on the 90th anniversary of the Bohr theory of the atom)

    International Nuclear Information System (INIS)

    Milant'ev, Vladimir P

    2004-01-01

    The history of the creation and development of Bohr's atomic theory is discussed. Even now, with a consistent quantum theory available, Bohr's theory is not simply the property of history, of methodological interest only. To this day, the ideas of the theory not only provide an excellent introduction to atomic physics, but are also used successfully in treating atomic Rydberg states, exotic atoms, etc. (from the history of physics)

  16. The Bohr-Sommerfeld atom theory. Sommerfeld's extension of Bohr's atomic model 1915/16; Die Bohr-Sommerfeldsche Atomtheorie. Sommerfelds Erweiterung des Bohrschen Atommodells 1915/16

    Energy Technology Data Exchange (ETDEWEB)

    Sommerfeld, Arnold

    2013-07-01

    In December 6th 1915 and January 8th 1916 Arnold Sommerfeld put the Bavarian Academy of Sciences two treatises in the amount of 75 printed pages before, by which he extended Bohr's atomic model from the year 1913 to the Bohr-Sommerfeld atom theory. In Sommerfeld's collected works only the publication submitted 1916 by Sommerfeld in the Annals of Physics about this is found.''My spectral lines are finally printed in the Academy to the impure. In the Annals they will appear in purer form'', so Sommerfeld has announced in this publication in February 10th 1916 to the editor of the Annals of Physics. From the science-historical view however for the extension of Bohr's atom theory just the Academy-treatises published before the purification process are of special interest. To the reproduction of these Academy-treatises an extensive physics-historical essay is prepended.

  17. Adjusted NIEL calculations for estimating proton-induced degradation of GaInP/GaAs/Ge space solar cells

    International Nuclear Information System (INIS)

    Lu Ming; Wang Rong; Liu Yunhong; Hu Wentao; Feng Zhao; Han Zhaolei

    2011-01-01

    The non-ionizing energy loss (NIEL) values for protons in solar cells should be modified by taking into account the distribution of the Bragg damage peak in the active region to calculate the corresponding displacement damage dose. In this paper, based upon a thin target approximation, a new approach is presented to modify NIEL values for protons on a GaAs sub-cell. Adjusted NIEL values can be used to estimate the degradation induced by protons on GaInP/GaAs/Ge triple-junction space solar cells.

  18. GaAs Led based NIEL spectrometer for the space radiation environment

    International Nuclear Information System (INIS)

    Houdayer, A.J.; Hinrichsen, P.F.; Barry, A.L.; Ng, A.

    1999-01-01

    A NIEL (non-ionizing-energy-loss) spectrometer for the Mir space station is described. The NIEL spectrometer package contained 20 GaAs LEDs, 10 SiC LEDs and 13 locations for TLD-700s. In order to probe different energy regions of the radiation field, the package is divided into 4 compartments covered by absorbers of varying thicknesses. This device has been submitted to proton irradiation. The effects on both the response time and the intensity of the light were measured as a function of the fluence. One of the advantages of LEDs as radiation monitors is their sensitivity and it is shown that it would be possible to detect a fluence of 4*10 7 p/cm 2 of 10 MeV protons, with sensitivity scaled as 1/E for other energies. (A.C.)

  19. Book review

    CERN Multimedia

    1967-01-01

    Niels Bohr. His life and work as seen by his friends and colleagues, edited by S. Rozentai. Translated from the Danish edition published in 1964. (Amsterdam, North- Holland Publishing Company, 1967, 58 s.)

  20. to view fulltext PDF

    Indian Academy of Sciences (India)

    , USA bass@phy.duke.edu. Basu Madhumita, Physics Department, Bangabasi College, Kolkata 700 009. Bearden Ian, Niels Bohr Institute, Blegdamsvej 17, 2100 Kobenhavn, Denmark bearden@nbi.dk. Bhalerao Rajeev, Tata Institute of ...

  1. Bohr orbit theory revisited

    International Nuclear Information System (INIS)

    Harcourt, R.D.

    1987-01-01

    Bohr orbit theory is used to calculate energies for the 1S, 2P, 3D, 4F and 5G states of the helium muonic atom, when the muon is excited. These energies are close to those which have been calculated variationally by Huang (1977, Phys. Rev. A 15 1832-8). (author)

  2. O modelo atômico de Bohr e as suas limitações na interpretação do espectro do átomo de hélio

    Directory of Open Access Journals (Sweden)

    Danielle Nicolodelli Tenfen

    2017-05-01

    Full Text Available A inserção de tópicos de física moderna e contemporânea na Educação Básica já não é mais algo tão distante. Os livros didáticos aprovados no último Plano Nacional contemplam, de formas distintas, discussões a esse respeito. Porém, sabe-se que a efetiva implementação desses conteúdos em sala de aula depende da formação – tanto conceitual quanto pedagógica – dos professores. Nesse sentido, o presente artigo visa contribuir com professores e estudantes de graduação em Física, apresentando um breve delineamento histórico que enfatiza o contexto de surgimento do modelo atômico de Niels Bohr, conhecido por situar-se em um período de transição entre Física Clássica e Moderna. Ainda, mostram-se detalhadamente as limitações do modelo de Bohr, evidenciando a necessidade das explicações oriundas da nova Mecânica Quântica para uma descrição adequada do espectro do átomo de hélio. Por fim, apresenta-se uma proposta experimental que consiste na construção de um espectroscópio de baixo custo e problematizam-se alguns dados coletados a partir desse aparato.

  3. De novo nonsense mutations in ASXL1 cause Bohring-Opitz syndrome

    DEFF Research Database (Denmark)

    Hoischen, Alexander; van Bon, Bregje W M; Rodríguez-Santiago, Benjamín

    2011-01-01

    Bohring-Opitz syndrome is characterized by severe intellectual disability, distinctive facial features and multiple congenital malformations. We sequenced the exomes of three individuals with Bohring-Opitz syndrome and in each identified heterozygous de novo nonsense mutations in ASXL1, which...... is required for maintenance of both activation and silencing of Hox genes. In total, 7 out of 13 subjects with a Bohring-Opitz phenotype had de novo ASXL1 mutations, suggesting that the syndrome is genetically heterogeneous....

  4. 17th Poincaré Seminar 2013

    CERN Document Server

    Duplantier, Bertrand; Raimond, Jean-Michel; Rivasseau, Vincent

    2016-01-01

    This fourteenth volume in the Poincaré Seminar Series is devoted to Niels Bohr, his foundational contributions to understanding atomic structure and quantum theory and their continuing importance today. This book contains the following chapters: - Tomas Bohr, Keeping Things Open; - Olivier Darrigol, Bohr's Trilogy of 1913; -John Heilbron, The Mind that Created the Bohr Atom; - Serge Haroche & Jean-Michel Raimond, Bohr's Legacy in Cavity QED; - Alain Aspect, From Einstein, Bohr, Schrödinger to Bell and Feynman: a New Quantum Revolution?; - Antoine Browaeys, Interacting Cold Rydberg Atoms: A Toy Many-Body System; - Michel Bitbol & Stefano Osnaghi, Bohr´s Complementarity and Kant´s Epistemology. Dating from their origin in lectures to a broad scientific audience these seven chapters are of high educational value. This volume is of general interest to physicists, mathematicians and historians.

  5. Inauguration of Proton Synchrotron

    CERN Multimedia

    1960-01-01

    On 5 February 1960, the Proton Synchrotron (PS) was formally inaugurated. The great Danish physicist, Niels Bohr, releases a bottle of champagne against a shielding block to launch the PS on its voyage in physics.

  6. Copenhagen, an unexplained encounter

    CERN Multimedia

    2003-01-01

    Why did Werner Heisenberg, a participant in the nuclear research programme of the Third Reich, visit his friend and mentor Niels Bohr in occupied Denmark in September 1941? Was it a deliberate attempt to mislead the allies through talking to Bohr? Or was he really pursuing the utopian goal of halting the race to build the atomic bomb? What the historians have never been able to fully explain is explored in the play "Copenhagen", in which the ghosts of the two great scientists try to fathom why they failed to understand each other all those years ago. "Copenhagen", which has filled theatres in London, New York and Paris, is one of the most successful plays of British author Michael Frayn, also famous for his crime thrillers and comedies. A production of the play in French will be staged at the Théâtre de Carouge from 18th November. Werner Heisenberg and Niels Bohr before World War II.Both CERN and the Association pour l'Histoire des Sciences have associated themselves with the production...

  7. At WA7

    CERN Multimedia

    1977-01-01

    The CERN-Genoa-Annecy(LAPP)- Niels Bohr Institute, Copenhagen-Oslo-University College,London Collaboration set-up the experiment WA7 to study two-body reactions at large transverse momentum. Here, Michel Yvert, Alberto Santronico, Per Carlson

  8. Reconstructing Bohr's Reply to EPR in Algebraic Quantum Theory

    Science.gov (United States)

    Ozawa, Masanao; Kitajima, Yuichiro

    2012-04-01

    Halvorson and Clifton have given a mathematical reconstruction of Bohr's reply to Einstein, Podolsky and Rosen (EPR), and argued that this reply is dictated by the two requirements of classicality and objectivity for the description of experimental data, by proving consistency between their objectivity requirement and a contextualized version of the EPR reality criterion which had been introduced by Howard in his earlier analysis of Bohr's reply. In the present paper, we generalize the above consistency theorem, with a rather elementary proof, to a general formulation of EPR states applicable to both non-relativistic quantum mechanics and algebraic quantum field theory; and we clarify the elements of reality in EPR states in terms of Bohr's requirements of classicality and objectivity, in a general formulation of algebraic quantum theory.

  9. De novo nonsense mutations in ASXL1 cause Bohring-Opitz syndrome

    NARCIS (Netherlands)

    Hoischen, Alexander; van Bon, Bregje W. M.; Rodríguez-Santiago, Benjamín; Gilissen, Christian; Vissers, Lisenka E. L. M.; de Vries, Petra; Janssen, Irene; van Lier, Bart; Hastings, Rob; Smithson, Sarah F.; Newbury-Ecob, Ruth; Kjaergaard, Susanne; Goodship, Judith; McGowan, Ruth; Bartholdi, Deborah; Rauch, Anita; Peippo, Maarit; Cobben, Jan M.; Wieczorek, Dagmar; Gillessen-Kaesbach, Gabriele; Veltman, Joris A.; Brunner, Han G.; de Vries, Bert B. B. A.

    2011-01-01

    Bohring-Opitz syndrome is characterized by severe intellectual disability, distinctive facial features and multiple congenital malformations. We sequenced the exomes of three individuals with Bohring-Opitz syndrome and in each identified heterozygous de novo nonsense mutations in ASXL1, which is

  10. What hope is there for South Africa? A public theological reflection ...

    African Journals Online (AJOL)

    2015-04-29

    Apr 29, 2015 ... As the Danish physicist, Niels Bohr, rightly said: 'Prediction is very difficult, especially if it ..... sanitation, electricity and refuse removal have also increased in ..... Real final consumption expenditure (FCE) per capita labour force ...

  11. Miscasting, TV adaptation inhibit 'Copenhagen' drama

    CERN Multimedia

    Winn, S

    2002-01-01

    Review of a television adaptation of the play 'Copenhagen', produced by Howard Davies for PBS, USA . The play speculates on the real reason that Werner Heisenberg came to see Niels Bohr in Copenhagen in 1941 (1 page).

  12. Nil Bohr-sets and almost automorphy of higher order

    CERN Document Server

    Huang, Wen; Ye, Xiangdong

    2016-01-01

    Two closely related topics, higher order Bohr sets and higher order almost automorphy, are investigated in this paper. Both of them are related to nilsystems. In the first part, the problem which can be viewed as the higher order version of an old question concerning Bohr sets is studied: for any d\\in \\mathbb{N} does the collection of \\{n\\in \\mathbb{Z}: S\\cap (S-n)\\cap\\ldots\\cap (S-dn)\

  13. Christian Bohr og De syv små Djaevle: Et laerestykke i 4 akter om iltdiffusionsstriden mellem Christian Bohr og August Krogh

    DEFF Research Database (Denmark)

    Gjedde, Albert

    2004-01-01

    The author explores novel lessons emerging from the oxygen diffusion controversy between Christian Bohr on one side and August and Marie Krogh on the other. THe controversy found its emphatic expression in August and Marie Krogh's "Seven Little Devils", a series of papers published back-to-back i......The author explores novel lessons emerging from the oxygen diffusion controversy between Christian Bohr on one side and August and Marie Krogh on the other. THe controversy found its emphatic expression in August and Marie Krogh's "Seven Little Devils", a series of papers published back...

  14. Back to the Future

    CERN Multimedia

    Collins, Graham

    2004-01-01

    "Predictions are hard to make, especially about the future" said Nobel physicist Niels Bohr, many years ago. But two months ago, 150 leading physicists gathered at the University of California to engage in just that daunting task (1 page)

  15. Correction of the exciton Bohr radius in monolayer transition metal dichalcogenides

    Science.gov (United States)

    Li, Run-Ze; Dong, Xi-Ying; Li, Zhi-Qing; Wang, Zi-Wu

    2018-07-01

    We theoretically investigate the correction of exciton Bohr radius in monolayer transition metal dichalcogenides (TMDCs) on different polar substrates arising from the exciton-optical phonon coupling, in which both the intrinsic longitudinal optical phonon and surface optical phonon modes couple with the exciton are taken into account. We find that the exciton Bohr radius is enlarged markedly due to these coupling. Moreover, it can be changed on a large scale by modulating the polarizability of polar substrate and the internal distance between the monolayer TMDCs and polar substrate. Theoretical result provides a potential explanation for the variation of the exciton Bohr radius in experimental measurement.

  16. Bohr's Philosophy of Wave–Particle Complementarity

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 18; Issue 10. Bohr's Philosophy of Wave–Particle Complementarity. Dipankar Home. General Article Volume 18 Issue 10 October 2013 pp 905-916. Fulltext. Click here to view fulltext PDF. Permanent link:

  17. Bohr effect of human hemoglobin: Separation of tertiary and quaternary contributions based on the Wyman equation.

    Science.gov (United States)

    Okonjo, Kehinde Onwochei

    2017-09-01

    As a prelude to separating tertiary from quaternary structure contributions to the Bohr effect, we employed the Wyman equation to analyze Bohr data for human hemoglobin to which 2,3-bisphosphoglycerate, 2,3-BPG, is bound. Changes in the pK a s of the histidine Bohr groups result in a net reduction of their contributions to the Bohr effect at pH 7.4 compared to their contributions in stripped hemoglobin. The non-histidine 2,3-BPG binding groups - the β-chain terminal amino group and Lys82β - make negative and positive contributions, respectively, to the Bohr effect. The final result is that the Bohr effect at physiological pH is higher for 2,3-BPG bound compared to stripped hemoglobin. Contributions linked to His2β, His77β and His143β enable us to separate tertiary from quaternary Bohr contributions in stripped and in 2,3-BPG bound hemoglobin. Both contributions serve to make the Bohr effect for 2,3-BPG bound hemoglobin higher than for stripped hemoglobin at physiological pH. Copyright © 2017 Elsevier B.V. All rights reserved.

  18. The BOHR Effect before Perutz

    Science.gov (United States)

    Brunori, Maurizio

    2012-01-01

    Before the outbreak of World War II, Jeffries Wyman postulated that the "Bohr effect" in hemoglobin demanded the oxygen linked dissociation of the imidazole of two histidines of the polypeptide. This proposal emerged from a rigorous analysis of the acid-base titration curves of oxy- and deoxy-hemoglobin, at a time when the information on the…

  19. Great Physicists - The Life and Times of Leading Physicists from Galileo to Hawking

    Science.gov (United States)

    Cropper, William H.

    2004-09-01

    Here is a lively history of modern physics, as seen through the lives of thirty men and women from the pantheon of physics. William H. Cropper vividly portrays the life and accomplishments of such giants as Galileo and Isaac Newton, Marie Curie and Ernest Rutherford, Albert Einstein and Niels Bohr, right up to contemporary figures such as Richard Feynman, Murray Gell-Mann, and Stephen Hawking. We meet scientists--all geniuses--who could be gregarious, aloof, unpretentious, friendly, dogged, imperious, generous to colleagues or contentious rivals. As Cropper captures their personalities, he also offers vivid portraits of their great moments of discovery, their bitter feuds, their relations with family and friends, their religious beliefs and education. In addition, Cropper has grouped these biographies by discipline--mechanics, thermodynamics, particle physics, and others--each section beginning with a historical overview. Thus in the section on quantum mechanics, readers can see how the work of Max Planck influenced Niels Bohr, and how Bohr in turn influenced Werner Heisenberg. Our understanding of the physical world has increased dramatically in the last four centuries. With Great Physicists , readers can retrace the footsteps of the men and women who led the way.

  20. Nuclear structure 1985

    International Nuclear Information System (INIS)

    Broglia, R.; Hagemann, G.; Herskind, B.

    1985-01-01

    These proceedings of the Niels Bohr Centennial Conference contains 40 lectures in nuclear physics ranging over the following subjects: single particle motion; collective motion at low excitation energy; collective motion at high angular momentum; giant resonances and nuclear forces. (G.J.P.)

  1. 19 November 2014 - C. Staur Ambassador Permanent Representative of Denmark to the United Nations Office and other international organisations in Geneva

    CERN Multimedia

    Brice, Maximilien

    2014-01-01

    signing the Guest book with CERN Director-General R. Heuer and visiting the ATLAS cavern with ATLAS Collaboration, Former Spokesperson P. Jenni, ATLAS Collaboration, University of Copenhagen M. Dam and Niels Bohr Institute, University of Copenhagen, senior ATLAS Denmark member P. Hansen.

  2. One Hundred Years of Bohr Model

    Indian Academy of Sciences (India)

    IAS Admin

    In this article I shall present a brief review of the .... By 1900, the amount of information available about .... resulting value was in quite good agreement with the .... It is fair to say that Bohr's model of the atom is simple, elegant, revolutionary but ...

  3. CMS Centre at CERN

    CERN Multimedia

    2007-01-01

    A new "CMS Centre" is being established on the CERN Meyrin site by the CMS collaboration. It will be a focal point for communications, where physicists will work together on data quality monitoring, detector calibration, offline analysis of physics events, and CMS computing operations. Construction of the CMS Centre begins in the historic Proton Synchrotron (PS) control room. The historic Proton Synchrotron (PS) control room, Opened by Niels Bohr in 1960, will be reused by CMS to built its control centre. TThe LHC@FNAL Centre, in operation at Fermilab in the US, will work very closely with the CMS Centre, as well as the CERN Control Centre. (Photo Fermilab)The historic Proton Synchrotron (PS) control room is about to start a new life. Opened by Niels Bohr in 1960, the room will be reused by CMS to built its control centre. When finished, it will resemble the CERN Contro...

  4. Bohr's Electron was Problematic for Einstein: String Theory Solved the Problem

    Science.gov (United States)

    Webb, William

    2013-04-01

    Neils Bohr's 1913 model of the hydrogen electron was problematic for Albert Einstein. Bohr's electron rotates with positive kinetic energies +K but has addition negative potential energies - 2K. The total net energy is thus always negative with value - K. Einstein's special relativity requires energies to be positive. There's a Bohr negative energy conflict with Einstein's positive energy requirement. The two men debated the problem. Both would have preferred a different electron model having only positive energies. Bohr and Einstein couldn't find such a model. But Murray Gell-Mann did! In the 1960's, Gell-Mann introduced his loop-shaped string-like electron. Now, analysis with string theory shows that the hydrogen electron is a loop of string-like material with a length equal to the circumference of the circular orbit it occupies. It rotates like a lariat around its centered proton. This loop-shape has no negative potential energies: only positive +K relativistic kinetic energies. Waves induced on loop-shaped electrons propagate their energy at a speed matching the tangential speed of rotation. With matching wave speed and only positive kinetic energies, this loop-shaped electron model is uniquely suited to be governed by the Einstein relativistic equation for total mass-energy. Its calculated photon emissions are all in excellent agreement with experimental data and, of course, in agreement with those -K calculations by Neils Bohr 100 years ago. Problem solved!

  5. El modelo semicuántico de Bohr en los libros de texto The Bohr's quantum model in the textbook

    Directory of Open Access Journals (Sweden)

    Jorge Eliécer Moreno Ramírez

    2010-01-01

    Full Text Available La didáctica de las ciencias naturales está cuestionando la transposición de los modelos científicos en modelos didácticos. Otras investigaciones muestran que el conocimiento científico convertido en conocimiento escolar produce deformaciones de la actividad científica y la simplificación de modelos, contribuyendo con la actitud negativa de los estudiantes hacia las ciencias y al fracaso escolar reportado por algunos estudios. Se pregunta si el modelo atómico de Bohr que se muestra en los textos se corresponde histórica y epistemológicamente con las actividades científicas y cuáles son las posibles deformaciones que de ésta se hace cuando se muestra el modelo en los libros. Los resultados de la investigación muestran una clara diferencia entre la propuesta de Bohr (1913 y la transposición del modelo, lo que invita a una reflexión profunda acerca de la confiabilidad que pueden tener los textos utilizados para la enseñanza de la ciencia químicaNatural science teaching is questioning the transposition that is made of scientific models into didactic models, because research has shown that when scientific knowledge is transformed into scholarly knowledge in order to be taught it causes the deformation of the scientific activity and the simplification of the models. This contributes to the negative attitude of students towards science, and student failure shown in some studies. This research inquired if the transposition of Bohr's atomic model that is shown in textbooks corresponds historically and epistemologically to scientific activity and what the possible deformations are that, coming from this model, are made to the scientific activity that comes from the transposition. The research results show differences between what Bohr (1913 proposed and the transposition of the model in textbooks. This information will contribute to the analysis that is being done regarding the dependability of textbooks.

  6. Measurement of Forward-Backward Charged Particle Correlations with ALICE

    DEFF Research Database (Denmark)

    Søgaard, Carsten

    Part I of the defence covers experimental development carried out in the ALICE experiment at the Large Hadron Collider at the European Organisation for Nuclear Research - CERN. For the Time Projection Chamber a sophisticated laser calibration system has been developed by the Niels Bohr Institute...

  7. Die ware rede agter Niels Bukh se besoek aan Suid-Afrika in 1939 ...

    African Journals Online (AJOL)

    Gymnastics and politics: Niels Bukh and male aesthetics” is an excellent work by ... the Afrikaners were anti-British and therefore pro-German, it was easy for Bonde to ... War left a large component of the European minority in a poor state of health. Apart

  8. UNESCO accolade for former DG

    CERN Multimedia

    2006-01-01

    Former CERN Director General, Herwig Schopper, has been awarded the UNESCO Niels Bohr Gold Medal award. He shares this year's distinction with two other recipients: Sir Martin Rees, Britain's astronomer royal, and Professor Peter Zoller, a central figure in the field of quantum information. Herwig Schopper (left) receiving the 2005 Niels Bohr Gold Medal from Helge Sander, Denmark's Minister of Science, Technology and Innovation. The awards, which took place at the Danish Royal Academy of Science and Letters on 15 November, recognise scientific excellence, concern for the impact of science, and efforts to promote the free exchange of ideas on a broad international scale. Herwig Schopper was Director-General of CERN from 1981 to 1988. Today, he is President of the SESAME Council, the International Centre for Synchrotron Light for Experimental Science and Applications in the Middle East (see Bulletin No. 26/2003). In his opening address at the ceremony, Jens Jørgen Gaardhøje, from the Danish National Commi...

  9. Nuclear magnetic ordering in silver

    International Nuclear Information System (INIS)

    Lefmann, K.

    1995-12-01

    Nuclear antiferromagnetic ordering has been observed by neutron diffraction in a single crystal of 109 Ag. The critical temperature is found to 700 pK, and the critical field is 100 μT. From the paramagnetic phase a second order phase transition leads into a type-I 1-k structure with long range order. The experiments have taken place at the Hahn-Meitner Institut in Berlin in collaboration with the low Temperature Laboratory in Helsinki, the Niels Bohr Institute in Copenhagen, and Risoe National Laboratory, Roskilde. The present report is a Ph.D. thesis which has been successfully defended at the Niels Bohr Institute. Besides the results of the nuclear ordering experiments the thesis contains a description of the theoretical background for nuclear magnetism and a review of earlier nuclear ordering experiments as well as theoretical work. The principles for studying polarized nuclei with use of polarized and unpolarized neutrons are presented, as well as the results of such experiments. (au) 11 tabs., 59 ills., 143 refs

  10. Trying to explain Copenhagen

    CERN Document Server

    2003-01-01

    The documentary "The Copenhagen Fallout" recounts the friendship and "falling out" of Niels Bohr and Werner Heisenberg, two of the greatest contemporary physicists - friends whom war turned into enemies. It will be shown at CERN on 1st December. During a lecture in Germany towards the end of 1922, a 20-year-old physicist dared to interrupt Physics Nobel-Prize winner Niels Bohr with the words "There is a mathematical error in what you have said." The young scientist in question was none other than Werner Heisenberg. From this audacious beginning a fruitful collaboration and great friendship grew. But World War II threw up a wall of incomprehension between the two scientists, as one worked for the Nazi regime and the other opened his Copenhagen institute to German Jewish scientists. Then came their famous meeting in September 1941, dramatised by the no less famous play "Copenhagen", currently being performed in association with CERN at th...

  11. Bohr's Creation of his Quantum Atom

    Science.gov (United States)

    Heilbron, John

    2013-04-01

    Fresh letters throw new light on the content and state of Bohr's mind before and during his creation of the quantum atom. His mental furniture then included the atomic models of the English school, the quantum puzzles of Continental theorists, and the results of his own studies of the electron theory of metals. It also included the poetry of Goethe, plays of Ibsen and Shakespeare, novels of Dickens, and rhapsodies of Kierkegaard and Carlyle. The mind that held these diverse ingredients together oscillated between enthusiasm and dejection during the year in which Bohr took up the problem of atomic structure. He spent most of that year in England, which separated him for extended periods from his close-knit family and friends. Correspondence with his fianc'ee, Margrethe Nørlund, soon to be published, reports his ups and downs as he adjusted to J.J. Thomson, Ernest Rutherford, the English language, and the uneven course of his work. In helping to smooth out his moods, Margrethe played an important and perhaps an enabling role in his creative process.

  12. Bohr--Sommerfeld Lagrangians of moduli spaces of Higgs bundles

    DEFF Research Database (Denmark)

    Biswas, Indranil; Gammelgaard, Niels Leth; Logares, Marina

    Let $X$ be a compact connected Riemann surface of genus at least two. Let $M_H(r,d)$ denote the moduli space of semistable Higgs bundles on $X$ of rank $r$ and degree $d$. We prove that the compact complex Bohr-Sommerfeld Lagrangians of $M_H(r,d)$ are precisely the irreducible components of the n......Let $X$ be a compact connected Riemann surface of genus at least two. Let $M_H(r,d)$ denote the moduli space of semistable Higgs bundles on $X$ of rank $r$ and degree $d$. We prove that the compact complex Bohr-Sommerfeld Lagrangians of $M_H(r,d)$ are precisely the irreducible components...

  13. Cern collisions light up Copenhagen

    CERN Multimedia

    Banks, Michael

    2010-01-01

    "Anyone passing by the Niels Bohr Institute in Copenhagen, Denmark, might be startled by some strange moving lights on the facade of the institute's main building. In fact, the dancing beams show, almost in real time, collisions form the Atlas experiment at Cern's Large Hadron Collider (LHC)" (1 paragraph)

  14. How Sommerfeld extended Bohr's model of the atom (1913-1916)

    Science.gov (United States)

    Eckert, Michael

    2014-04-01

    Sommerfeld's extension of Bohr's atomic model was motivated by the quest for a theory of the Zeeman and Stark effects. The crucial idea was that a spectral line is made up of coinciding frequencies which are decomposed in an applied field. In October 1914 Johannes Stark had published the results of his experimental investigation on the splitting of spectral lines in hydrogen (Balmer lines) in electric fields, which showed that the frequency of each Balmer line becomes decomposed into a multiplet of frequencies. The number of lines in such a decomposition grows with the index of the line in the Balmer series. Sommerfeld concluded from this observation that the quantization in Bohr's model had to be altered in order to allow for such decompositions. He outlined this idea in a lecture in winter 1914/15, but did not publish it. The First World War further delayed its elaboration. When Bohr published new results in autumn 1915, Sommerfeld finally developed his theory in a provisional form in two memoirs which he presented in December 1915 and January 1916 to the Bavarian Academy of Science. In July 1916 he published the refined version in the Annalen der Physik. The focus here is on the preliminary Academy memoirs whose rudimentary form is better suited for a historical approach to Sommerfeld's atomic theory than the finished Annalen-paper. This introductory essay reconstructs the historical context (mainly based on Sommerfeld's correspondence). It will become clear that the extension of Bohr's model did not emerge in a singular stroke of genius but resulted from an evolving process.

  15. Kvantemekanik

    DEFF Research Database (Denmark)

    Mølmer, Klaus

    enorm succes, men fortolkningen af den splittede samtidig tidens største videnskabsmænd, særligt Niels Bohr og Albert Einstein. Denne bog gennemgår kvantemekanikkens og fysikkens udvikling i det 20. århundrede - og giver indblik i de nyeste opdagelser af, hvordan den atomare verden fungerer...

  16. Noninvasive measurement of mean alveolar carbon dioxide tension and Bohr's dead space during tidal breathing.

    Science.gov (United States)

    Koulouris, N G; Latsi, P; Dimitroulis, J; Jordanoglou, B; Gaga, M; Jordanoglou, J

    2001-06-01

    The lack of methodology for measuring the alveolar carbon dioxide tension (PA,CO2) has forced investigators to make several assumptions, such as that PA,CO2 is equal to end-tidal (PET,CO2) and arterial CO2 tension (Pa,CO2). The present study measured the mean PA,CO2 and Bohr's dead space ratio (Bohr's dead space/tidal volume (VD,Bohr/VT)) during tidal breathing. The method used is a new, simple and noninvasive technique, based on the analysis of the expired CO2 volume per breath (VCO2) versus the exhaled VT. This curve was analysed in 21 normal, healthy subjects and 35 chronic obstructive pulmonary disease (COPD) patients breathing tidally through a mouthpiece apparatus in the sitting position. It is shown that: 1) PA,CO2 is similar to Pa,CO2 in normal subjects, whilst it is significantly lower than Pa,CO2 in COPD patients; 2) PA,CO2 is significantly higher than PET,CO2 in all subjects, especially in COPD patients; 3) VD,Bohr/VT is increased in COPD patients as compared to normal subjects; and 4) VD,Bohr/VT is lower than the "physiological" dead space ratio (VD,phys/VT) in COPD patients. It is concluded that the expired carbon dioxide versus tidal volume curve is a useful tool for research and clinical work, because it permits the noninvasive and accurate measurement of Bohr's dead space and mean alveolar carbon dioxide tension accurately during spontaneous breathing.

  17. Complementarity in the Einstein-Bohr photon box

    NARCIS (Netherlands)

    Dieks, D.G.B.J.; Lam, S

    2008-01-01

    The Bohr-Einstein photon box thought experiment is a forerunner of the EPR experiment: a packet of radiation escapes from a box, and the box-plus-radiation state remains entangled. Hence, a measurement on the box makes a difference for the state of the far-away radiation long after its escape. This

  18. Fulltext PDF

    Indian Academy of Sciences (India)

    1932, he attended the opening address by Niels Bohr at the 'International Congress on Light Therapy' on the topic ... understanding of the molecular processes taking place in the cell in term of atomic physics, might be ... Delbriick recalls in a few well-chosen words the paradoxes that gave rise to the quantum mechanical.

  19. Epistemology and Probability

    CERN Document Server

    Plotnitsky, Arkady

    2010-01-01

    Offers an exploration of the relationships between epistemology and probability in the work of Niels Bohr, Werner Heisenberg, and Erwin Schrodinger; in quantum mechanics; and in modern physics. This book considers the implications of these relationships and of quantum theory for our understanding of the nature of thinking and knowledge in general

  20. Secret letters cast light on Copenhagen

    Energy Technology Data Exchange (ETDEWEB)

    Durrani, Matin

    2001-11-01

    Letters by Niels Bohr that have been kept secret since his death could explain the mystery of why Werner Heisenberg visited him in Copenhagen in 1941. When the author Michael Frayn spent two years writing Copenhagen, he had no idea how successful the play would become. He doubted that audiences would sit through a historical drama about a war-time meeting between Werner Heisenberg - head of Germany's nuclear programme - and his old mentor Niels Bohr in the Nazi-occupied Danish capital in 1941. But Frayn's efforts paid off. Audiences and critics alike have thrilled at the way the award-winning play probes the historical uncertainty that surrounds the encounter. Was Heisenberg fishing for information about the Allies' atomic plans - or was he trying to recruit Bohr for Germany's bomb programme? Did Heisenberg want to suggest that the Germans were close to finishing a bomb so that the Allies would make peace with Hitler? Maybe he was simply seeking approval from Bohr for his own atomic work. There is also a moral debate: did Heisenberg know how to build a bomb, but decided not to - or did he want to build one, but got his calculations wrong? Unfortunately, no-one was there to record or observe the encounter and we cannot know for sure what was said or implied between the two men. All we do know is that the pair dined together and took a short walk - and that the incident damaged Bohr and Heisenberg's friendship forever. To piece together what happened, historians of science have had to rely on Heisenberg's post-war recollections - which have been ambiguous and contradictory - along with scraps of evidence from secondary sources. (U.K.)

  1. RE-SONAN--CEIFeb-ru-aN

    Indian Academy of Sciences (India)

    discovery of energy quanta"; 1921 - to Albert Einstein "for services to theoretical physics, and especially for his discovery of the law of the photoelectric effect"; 1922 - to Niels Bohr" for his investigations of the structure of atoms, and ofthe radiation emanating from them"; 1929 - to Louis Victor de Broglie "for his discovery of the ...

  2. The new dedicated PIXE set-up at the National Environmental Research Institute, Denmark

    International Nuclear Information System (INIS)

    Kemp, Ka ring re; Waahlin, Peter

    1999-01-01

    The Niels Bohr Institute in Copenhagen was in the beginning of the 70'es one of the early places for PIXE. Contributions were made to the theoretical interpretation of the PIXE spectra as well as the practical application. The home-made 4 MV van de Graaff accelerator at the Niels Bohr Institute was an excellent tool for PIXE. The accelerator, which was used for many years, has now found its place on a museum after more than 40 years of active service. A dedicated PIXE set-up has now been established at the National Environmental Research Institute using a new 1.7 MV Tandem Pelletron (5SDH) from NEC. The main application is elemental analysis of outdoor aerosols. The main work is unsophisticated macro analyses, which do not push the equipment to its limits. This enables automated analysis of about 10,000 samples per year using very limited manpower resources. The research focuses on the contribution from various source types to the atmosphere over Europe, the North Atlantic and Greenland. Source compositions and their temporal variations are studied

  3. Nuclear magnetic ordering in silver

    Energy Technology Data Exchange (ETDEWEB)

    Lefmann, K

    1995-12-01

    Nuclear antiferromagnetic ordering has been observed by neutron diffraction in a single crystal of {sup 109}Ag. The critical temperature is found to 700 pK, and the critical field is 100 {mu}T. From the paramagnetic phase a second order phase transition leads into a type-I 1-k structure with long range order. The experiments have taken place at the Hahn-Meitner Institut in Berlin in collaboration with the low Temperature Laboratory in Helsinki, the Niels Bohr Institute in Copenhagen, and Risoe National Laboratory, Roskilde. The present report is a Ph.D. thesis which has been successfully defended at the Niels Bohr Institute. Besides the results of the nuclear ordering experiments the thesis contains a description of the theoretical background for nuclear magnetism and a review of earlier nuclear ordering experiments as well as theoretical work. The principles for studying polarized nuclei with use of polarized and unpolarized neutrons are presented, as well as the results of such experiments. (au) 11 tabs., 59 ills., 143 refs.

  4. Why has the bohr-sommerfeld model of the atom been ignoredby general chemistry textbooks?

    Science.gov (United States)

    Niaz, Mansoor; Cardellini, Liberato

    2011-12-01

    Bohr's model of the atom is considered to be important by general chemistry textbooks. A major shortcoming of this model was that it could not explain the spectra of atoms containing more than one electron. In order to increase the explanatory power of the model, Sommerfeld hypothesized the existence of elliptical orbits. This study has the following objectives: 1) Formulation of criteria based on a history and philosophy of science framework; and 2) Evaluation of university-level general chemistry textbooks based on the criteria, published in Italy and U.S.A. Presentation of a textbook was considered to be "satisfactory" if it included a description of the Bohr-Sommerfeld model along with diagrams of the elliptical orbits. Of the 28 textbooks published in Italy that were analyzed, only five were classified as "satisfactory". Of the 46 textbooks published in U.S.A., only three were classified as "satisfactory". This study has the following educational implications: a) Sommerfeld's innovation (auxiliary hypothesis) by introducing elliptical orbits, helped to restore the viability of Bohr's model; b) Bohr-Sommerfeld's model went no further than the alkali metals, which led scientists to look for other models; c) This clearly shows that scientific models are tentative in nature; d) Textbook authors and chemistry teachers do not consider the tentative nature of scientific knowledge to be important; e) Inclusion of the Bohr-Sommerfeld model in textbooks can help our students to understand how science progresses.

  5. Bohr quantum theory of the magnetic monopoles and classical electron electromagnetic mass problem

    OpenAIRE

    Pankovic, Vladan

    2010-01-01

    In the first part of this work we apply Bohr (old or naive quantum atomic) theory for analysis of the remarkable electro-dynamical problem of magnetic monopoles. We reproduce formally exactly some basic elements of the Dirac magnetic monopoles theory, especially Dirac electric/magnetic charge quantization condition. It follows after application of Bohr theory at the system, simply called magnetic monopole "atom", consisting of the practically standing, massive magnetic monopole as the "nucleu...

  6. Proceedings of the symposium on the foundations of modern physics, 1987

    International Nuclear Information System (INIS)

    Lahti, P.

    1987-01-01

    This book discusses the following subjects: The Quantum Postulate and atomic theory; modern mathematics in formulation of basic laws of physics; uncertainty principles, Quantum systems; Niels Bohr's concept of reality; Quantum theory; language and reality in Quantum physics; Wolfgang Pauli's conception of reality; interpretation of Quantum mechanics; varieties of realism; and many-Hilbert-spaces theory of Quantum measurements

  7. Fulltext PDF

    Indian Academy of Sciences (India)

    The attitude of slightly flippant irreverence for dogma reflected in Ghalib's lines, and indeed in his life, has played an important role in the development of every scientific discipline. The physicist Niels Bohr is said to have once remarked that the opposite of a great truth was usually another great truth. Scientific belief, once it ...

  8. Conversazioni con la sfinge il ruolo dei paradossi nelle rivoluzioni scientifiche

    CERN Document Server

    Klein, Etienne

    1993-01-01

    Niels Bohr rifiutava ogni idea troppo conservatrice con il lapidario giudizio "Non è abbastanza folle". La fisica moderna ha dimostrato l'inefficacia del buon senso per costruire teorie o comprendere particolari risultati sperimentali. In rottura con l'esperenzia comune, ha contrapposto l'inaudito all'abitudine, i concetti delicati agli archetipi classici, le ipotesi piu ardite alle apparenze rassicuranti.

  9. L’ULTIMO ASSOLUTO DELLA RELATIVITÀ

    Directory of Open Access Journals (Sweden)

    Andrea Roselli

    2014-03-01

    Full Text Available Si mostra come la celebre disputa tra Einstein e Bohr riguardi i concetti di realtà retrostanti le loro relative concezioni della realtà fisica; conseguentemente, viene suggerita una significativa connessione tra le teorie di Copenaghen e la relatività einsteiniana. Bohr considerava la descrizione della realtà offerta dalla meccanica quantistica completa; Einstein, al contrario (nonostante il contributo apportato alla sua nascita, continuava a cercare una teoria deterministica. Quando nel 1935 Einstein, Podolsky e Rosen pubblicarono il famoso EPR, Bohr replicò centrando l’attenzione sul ragionevole criterio di realtà proposto dagli autori, rimarcando l’inconsistenza concettuale dell’esistenza indipendente di un costitutivo “inconoscibile”. La fisica, attraverso la grande lezione epistemologica – come era solito dirne Niels Bohr – rappresentata dalla MQ, si trovava di fronte ad una capitale questione filosofica: che cosa è la realtà? Viene infine suggerita una giustapposizione della problematizzazione einsteiniana del concetto di simultaneità e del carattere reciproco delle misurazioni quantomeccaniche esposto da Bohr, che suggerisce l’abbandono dell’ultimo grande assoluto: una realtà assoluta.

  10. The Bohr-Heisenberg correspondence principle viewed from phase space

    DEFF Research Database (Denmark)

    Dahl, Jens Peder

    2002-01-01

    Phase-space representations play an increasingly important role in several branches of physics. Here, we review the author's studies of the Bohr-Heisenberg correspondence principle within the Weyl-Wigner phase-space representation. The analysis leads to refined correspondence rules that can...

  11. Standing together in troubled times unpublished letters by Pauli, Einstein, Franck and others

    CERN Document Server

    2017-01-01

    This captivating book is a story of the friendship between a genius physicist Wolfgang Pauli and Charlotte Houtermans whose career in physics was not as glamorous. They met in the late 1920s in Germany, at the very onset of the quantum era and personally knew all the major players in the emergent quantum world that was very much part of central Europe: Germany, Austria, Hungary, Denmark and Switzerland. And Charlotte was a student at Göttingen that was right at the heart.Caught between two evils — Soviet Communism and German National Socialism — she would have probably perished if it were not for the brotherhood of physicists: Niels Bohr, Wolfgang Pauli, Albert Einstein, James Franck, Max Born, Robert Oppenheimer and many other noted scientists who tried to save friends and colleagues (either leftist sympathizers or Jews) who were in mortal danger of being entrapped in a simmering pre-WWII Europe.Using newly discovered documents from the Houtermans family archive: twenty three Pauli's letters to Charlott...

  12. Report of the Army Science Board Summer Study on Installations 2025

    Science.gov (United States)

    2009-12-01

    stresses , beha- vioral health problems, and injuries associated with war. Transform: IMCOM is modernizing installation management processes, policies...well. For example, "Prediction is very difficult, especially about the future" (Niels Bohr). Others stress that the future will be a lot like the...34homogenization" Endangered species Continuous and ubiquitous of society Islanding computing Telecommuting Wireless proliferation across appliances

  13. Neutrons as Party Animals: An Analogy for Understanding Heavy-Element Fissility

    Science.gov (United States)

    Reed, B. Cameron

    2012-01-01

    I teach a general education class on the history of nuclear physics and the Manhattan Project. About halfway through the course we come to the discovery of fission and Niels Bohr's insight that it is the rare isotope of uranium, U-235, which fissions under slow-neutron bombardment as opposed to the much more common U-238 isotope. As an…

  14. The coupling one quasi-particle to a Bohr core

    International Nuclear Information System (INIS)

    Lewenkopf, C.H.

    1988-01-01

    Odd nuclei are studied coupling one quasi-particle to a Bohr's core, solved by Kumar Baranger's method. Calculations are performed for energies and transition rates for the following isotopes: 133 Xe, 183 W, 99 Tc and 101 Rh. Limitations of the model are discussed. (author) [pt

  15. Niels Hemmingsen and the Construction of a Seventeenth-Century Protestant Memory

    DEFF Research Database (Denmark)

    Sommer, Mattias Skat

    2017-01-01

    Danish reformer Niels Hemmingsen was a Lutheran, but owing to Pan-Protestant sentiments that became apparent in his later writings, he found an appreciative audience in non-Lutheran Western Europe during the late sixteenth and early seventeenth centuries. This article argues that the early modern...... European reception of Hemmingsen and his theology should be seen as an attempt to construct him as part of a Protestant memory. It also argues that in order to understand the dynamics behind the reception of Hemmingsen’s ideas, one has to consider the geopolitics of early modern Denmark. Due to her...

  16. The Bohr--Einstein ''weighing-of-energy'' debate and the principle of equivalence

    International Nuclear Information System (INIS)

    Hughes, R.J.

    1990-01-01

    The Bohr--Einstein debate over the ''weighing of energy'' and the validity of the time--energy uncertainty relation is reexamined in the context of gravitation theories that do not respect the equivalence principle. Bohr's use of the equivalence principle is shown to be sufficient, but not necessary, to establish the validity of this uncertainty relation in Einstein's ''weighing-of-energy'' gedanken experiment. The uncertainty relation is shown to hold in any energy-conserving theory of gravity, and so a failure of the equivalence principle does not engender a failure of quantum mechanics. The relationship between the gravitational redshift and the equivalence principle is reviewed

  17. A new relation of parameters of Bohr-Mottelson rotational spectra formula

    International Nuclear Information System (INIS)

    Li Mingliang; Xu Fuxin

    2003-01-01

    With the first three terms of Harris formula included and Mottelson's method followed, a new relation of the parameters of Bohr-Mottelson rotational spectra formula is brought forward. Superdeformed bands of even-even nuclei and normal deformed bands of nuclei in actinide and rare-earth are fitted with four-parameter Bohr-Mottelson rotational spectra formula. The relations of the parameters A, B, C, D are studied. The result show, for normal deformed bands, the new relation approach the experiment value in the same degree as the relation deduced from ab formula, but for superdeformed bands, the new relation is closer to the experiment than the relation deduced from ab formula. Three-parameter Harris formula may have better convergence than two-parameter Harris formula

  18. Details of Nazis' A-Bomb program surface

    CERN Multimedia

    Glanz, J

    2002-01-01

    Werner Heisenberg, leader of the Nazi atomic bomb program, revealed the projects existence to Niels Bohr in a meeting in Copenhagen in 1941. But contrary to several historical accounts of the meeting, Heisenberg never expressed moral qualms about building a bomb for Hitler nor hinted that he might be willing to sabotage the project, according to secret documents cited in a London newspaper yesterday (2 pages).

  19. Wave-Particle Dualism in Action

    Science.gov (United States)

    Schleich, Wolfgang P.

    The wave-particle dualism, that is the wave nature of particles and the particle nature of light together with the uncertainty relation of Werner Heisenberg and the principle of complementarity formulated by Niels Bohr represent pillars of quantum theory. We provide an introduction into these fascinating yet strange aspects of the microscopic world and summarize key experiments confirming these concepts so alien to our daily life.

  20. L'Afrique, nouvel Eldorado du commerce | IDRC - International ...

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

    5 déc. 2013 ... Il est directeur du Perimeter Institute for Theoretical Physics, où il est également titulaire de la chaire Mike and Ophelia Lazaridis Niels Bohr. Thierry Zomahoun, M.B.A., M.Ph., est directeur général de l'AIMS Next Einstein Initiative (AIMS-NEI) et directeur du secrétariat mondial d'AIMS. Cet article a été publié ...

  1. Report of activities, 1975

    International Nuclear Information System (INIS)

    1976-01-01

    A list of staff and research fellows at NORDITA is given. NORDITA publications and lecture notes of the period in question are listed. In addition to regular lectures, colloquia were held in collaboration with the Niels Bohr Institute. Details are given of visiting physicists attached to NORDITA. The exchange of physicists within the Nordic institutions as well as the visits by former NORDITA research fellows are listed. (B.R.H.)

  2. The quantum cookbook

    International Nuclear Information System (INIS)

    Gribbin, John.

    1985-01-01

    The paper traces the development of quantum physics, from the early past of this century to modern applications including solid-state devices. The early quantum studies on the model of the atom, carried out by Niels Bohr, are described, as well as the work by Heisenberg and colleagues on matrix mechanics. De Broglie wavelength; particles and waves; uncertainty principles; lasers; and semiconductor systems; are all briefly discussed. (U.K.)

  3. L'Afrique, nouvel Eldorado du commerce | CRDI - Centre de ...

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

    5 déc. 2013 ... Il est directeur du Perimeter Institute for Theoretical Physics, où il est également titulaire de la chaire Mike and Ophelia Lazaridis Niels Bohr. Thierry Zomahoun, M.B.A., M.Ph., est directeur général de l'AIMS Next Einstein Initiative (AIMS-NEI) et directeur du secrétariat mondial d'AIMS. Cet article a été publié ...

  4. Gravity and absolute space. The works of Niels Bjern (1865-1909)

    International Nuclear Information System (INIS)

    Burlankov, Dmitrii E

    2004-01-01

    Nearly 20 years before Einstein, Niels Bjern developed a theory of gravity based on what is today known as the equivalence principle - but naturally without invoking the ideas of the special relativity theory. Bjern predicted almost all the effects considered to be tests for general relativity, his calculation formulas for the effects being identical to those of general relativity. An advocate of the absolute space concept, Bjern described the gravitational field in terms of the field of absolute velocities of an inertial space. He only used the ideas of general relativity to describe the precession of the perihelion of Mercury. The reason why Bjern's predictions and those of general relativity are identical is discussed. (from the history of physics)

  5. EPR before EPR: A 1930 Einstein-Bohr thought Experiment Revisited

    Science.gov (United States)

    Nikolic, Hrvoje

    2012-01-01

    In 1930, Einstein argued against the consistency of the time-energy uncertainty relation by discussing a thought experiment involving a measurement of the mass of the box which emitted a photon. Bohr seemingly prevailed over Einstein by arguing that Einstein's own general theory of relativity saves the consistency of quantum mechanics. We revisit…

  6. WE-H-204-01: William D. Coolidge, Inventor of the Modern X-Ray Tube

    Energy Technology Data Exchange (ETDEWEB)

    Allard, D. [PA Dept. of Environmental Protection (United States)

    2016-06-15

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  7. WE-H-204-00: History Committee Symposium

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2016-06-15

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  8. WE-H-204-01: William D. Coolidge, Inventor of the Modern X-Ray Tube

    International Nuclear Information System (INIS)

    Allard, D.

    2016-01-01

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  9. WE-H-204-00: History Committee Symposium

    International Nuclear Information System (INIS)

    2016-01-01

    old invention is the same basic X-ray tube used today in medicine, research and industry. In 1932 Coolidge became Director of the GE Laboratory, then in 1940 Vice-President and Director of Research. In 1941 he was a member of a small committee, appointed by President Franklin D. Roosevelt, to evaluate the military importance of research on uranium. This committee’s report led to the establishment of the Manhattan Engineering District for nuclear weapons development during WWII. Coolidge lived to be over 100 years old, he had 83 patents to his credit, numerous awards and honorary degrees, and in 1975 was elected to the National Inventor’s Hall of Fame. At the time he was the only inventor to receive this honor in his lifetime. Dr. Coolidge was also the first recipient of the AAPM’s highest science award - named in his honor. From notes of a day-long interview with Coolidge’s son Lawrence in the mid-1990s, previous biographies, publications, books, GE literature, historic photographs, e.g., a wonderful 1874 photo stereoview card with 1 year old baby “Willie Coolidge”, and other artifacts in the author’s collection, this presentation will review Dr. Coolidge’s amazing life, work, accomplishments and awards. “History and Archives Resources at AIP for AAPM and its Members” Gregory A. Good, Ph.D. - Director, AIP Center for History of Physics Melanie J. Mueller, MLIS - Acting Director, AIP Niels Bohr Library & Archives The American Institute of Physics established the Center for History of Physics and the Niels Bohr Library & Archives in the 1960s. Our shared mission is: To preserve and make known the history of the physical sciences. This talk will explore the many ways that AIP’s two history programs support the historical and archival activities of AAPM. Topics will include our ongoing oral history program, web outreach through exhibits and teaching guides, and archiving for AAPM and other Member Societies. We will focus in particular on materials in

  10. History at your fingertips

    CERN Multimedia

    2003-01-01

    Would you have liked to meet Victor Weisskopf, Niels Bohr or Robert Oppenheimer? Do you wish you had visited the famous Gargamelle or UA1 experiments? Well, you still can... at least on video. Thanks to the ETT Division's Document Handling (DH) Group, you now have access to the Audiovisual Service's amazing archives, where you can meet the leading figures and relive the main events in the Laboratory's history. All this without even having to leave your office. The DH Group has launched a new on-line catalogue comprising a selection of the Audiovisual Service's collection. These films were digitised from the original D3, Numatic or VHS tapes, and you can watch them from your work station. The desire to make the Laboratory's historical visual resources available to as many users as possible had already led to the creation in 1997 of an on-line catalogue of photographs covering the period from 1951 to the present day. (See http://weblib.cern.ch/Photos/). The new video catalogue provides you with the rare opport...

  11. Audiovisual work- Interview with Niels Thygesen, Copenhagen 9 April 2016 (Lenght 02:35:03)

    OpenAIRE

    Danescu, Elena; Klein, Francois; Thygesen, Niels

    2017-01-01

    In the framework of the research project "Pierre Werner and Europe, Interview with Niels Thygesen, Professor of Economics at the University of Copenhagen from 1964 to 1969 and from 1971 to 2004, Adviser to the Governor of the Danmarks Nationalbank from 1973 to 1983 and a member of the Delors Committee set up to study and propose practical steps that would lead to the gradual establishment of Economic and Monetary Union (EMU) from 1988 to 1989, carried out by the Centre Virtuel de la Connaissa...

  12. The Kantian framework of complementarity

    Science.gov (United States)

    Cuffaro, Michael

    A growing number of commentators have, in recent years, noted the important affinities in the views of Immanuel Kant and Niels Bohr. While these commentators are correct, the picture they present of the connections between Bohr and Kant is painted in broad strokes; it is open to the criticism that these affinities are merely superficial. In this essay, I provide a closer, structural, analysis of both Bohr's and Kant's views that makes these connections more explicit. In particular, I demonstrate the similarities between Bohr's argument, on the one hand, that neither the wave nor the particle description of atomic phenomena pick out an object in the ordinary sense of the word, and Kant's requirement, on the other hand, that both 'mathematical' (having to do with magnitude) and 'dynamical' (having to do with an object's interaction with other objects) principles must be applicable to appearances in order for us to determine them as objects of experience. I argue that Bohr's 'complementarity interpretation' of quantum mechanics, which views atomic objects as idealizations, and which licenses the repeal of the principle of causality for the domain of atomic physics, is perfectly compatible with, and indeed follows naturally from a broadly Kantian epistemological framework.

  13. Gewaltenteilung im Rechsstaat und europäische Geschichte. 3 : Vorträge am Staatsgerichtshof und am Historischen Seminar der Universität Tartu (Dorpat)/Estland / Ingo von Münch, Niels von Redecker ; Forum Academicum Inter Nationes ; Roela Uemõisa

    Index Scriptorium Estoniae

    Münch, Ingo von

    1998-01-01

    Sisaldab: Die Gewaltenteilung im Rechtstaat = Võimude lahususe printsiip õigusriigis / Ingo von Münch ; Can we have a European history / Niels von Redecker ; The Ostpolitik of Willy Brandt / Niels von Redecker

  14. Controversy and consensus nuclear beta decay 1911-1934

    CERN Document Server

    Jensen, Carsten

    2000-01-01

    In 1920s, a long-lasting controversy on the interpretation of nuclear beta spectrum arose between Lise Meitner and Charles Drummond Ellis. This controversy, and the reactions from the contending parties when it was settled, reflect clearly the difference between the scientific communities in Berlin and Cambridge at that time. The Meitner-Ellis controversy ended in 1929, and it left an anomaly that attracted leading theoretical physicists. A new dispute, this time between Niels Bohr and Wolfgang Pauli, broke out. It concerned the explanation of the continuity of the primary beta particles and dominated the discussions for the next five years. Pauli argued for a new particle, and Bohr for a new theory; both suggestions were radical steps, but they reflected two different ways of doing physics.

  15. Probing the (empirical quantum structure embedded in the periodic table with an effective Bohr model

    Directory of Open Access Journals (Sweden)

    Wellington Nardin Favaro

    2013-01-01

    Full Text Available The atomic shell structure can be observed by inspecting the experimental periodic properties of the Periodic Table. The (quantum shell structure emerges from these properties and in this way quantum mechanics can be explicitly shown considering the (semi-quantitative periodic properties. These periodic properties can be obtained with a simple effective Bohr model. An effective Bohr model with an effective quantum defect (u was considered as a probe in order to show the quantum structure embedded in the Periodic Table. u(Z shows a quasi-smoothed dependence of Z, i.e., u(Z ≈ Z2/5 - 1.

  16. Nordita. Nordic Institute for Theoretical Atomic Physics

    International Nuclear Information System (INIS)

    1990-01-01

    This report covers the period from January 1st to December 31st, 1989. The purpose of Nordita is to encourage scientific collaboration between the Nordic countries within scientific and basic nuclear physics. The scientific programme at Nordita covers astrophysics, elementary particle physics, solid state physics and nuclear physics. The scientific work is published or otherwise made public. The research at Nordita is performed in close cooperation with the Niels Bohr Institute, Denmark. (author)

  17. Multilevel fitting of 235U resonance data sensitive to Bohr-and Brosa-fission channels

    International Nuclear Information System (INIS)

    Moore, M.S.

    1995-01-01

    The recent determination of the K, J dependence of the neutron induced fission cross section of 235 U by the Dubna group has led to a renewed interest in the mechanism of fission from saddle to scission. The K quantum numbers designate the so-called Bohr fission channels, which describe the fission properties at the saddle point. Certain other fission properties, e.g., the fragment mass and kinetic-energy distribution, are related to the properties of the scission point. The neutron energy dependence of the fragment kinetic energies has been measured by Hambsch et al., who analyzed their data according to a channel description of Brosa et al. How these two channel descriptions, the saddle-point Bohr channels and the scission-point Brosa channels, relate to one another is an open question, and is the subject matter of the present paper. We use the correlation coefficient between various data sets, in which variations are reported from resonance to resonance, as a measure of both-the statistical reliability of the data and of the degree to which different scission variables relate to different Bohr channels. We have carried out an adjustment of the ENDF/B-VI multilevel evaluation of the fission cross section of 235 U, one that provides a reasonably good fit to the energy dependence of the fission, capture, and total cross sections below 100 eV, and to the Bohr-channel structure deduced from an earlier measurement by Pattenden and Postma. We have also further explored the possibility of describing the data of Hambsch et al. in the Brosa-channel framework with the same set of fission-width vectors, only in a different reference system. While this approach shows promise, it is clear that better data are also needed for the neutron energy variation of the scission-point variables

  18. Traffic restrictions on Routes Bloch, Maxwell and Bohr

    CERN Multimedia

    IT Department

    2008-01-01

    Excavation and pipework is being carried out in the framework of the transfer of the waste water treatment plant for the effluents from the surface treatment workshops from Building 254 to Building 676, currently under construction. This work may encroach onto Routes Bloch, Maxwell and Bohr and disrupt the flow of traffic. Users are requested to comply with the road signs that will be erected. The work is expected to last until the beginning of December 2008. Thank you for your understanding. TS/CE and TS/FM Groups Tel.7 4188 or 16 4314

  19. The Strange Friendship of Pauli and Jung - When Physics Met Psychology

    CERN Multimedia

    CERN. Geneva

    2009-01-01

    At a key time in his scientific development, Pauli was undergoing analysis by Jung. What can we learn about Pauli's discoveries of the exclusion principle and the CPT theorem, as well as his thoughts on non-conservation of parity, and his quest with Heisenberg for a unified field theory of elementary particles from Jung’s analysis of his dreams? A very different Pauli emerges, one at odds with esteemed colleagues such as Niels Bohr and Werner Heisenberg.

  20. Transferring and practicing the correspondence principle in the old quantum theory: Franck, Hund and the Ramsauer effect

    Energy Technology Data Exchange (ETDEWEB)

    Jaehnert, Martin [MPIWG, Berlin (Germany)

    2013-07-01

    In 1922 Niels Bohr wrote a letter to Arnold Sommerfeld complaining that: ''[i]n the last years my attempts to develop the principles of quantum theory were met with very little understanding.'' Looking for the correspondence idea in publications, one finds that the principle was indeed hardly applied by physicists outside of Copenhagen. Only by 1922 physicists from wider research networks of quantum theory started to transfer the principle into their research fields, often far removed from its initial realm of atomic spectroscopy. How and why did physicists suddenly become interested in the idea that Bohr*s writings had been promoting since 1918? How was the correspondence principle transferred to these fields and how did its transfer affect these fields and likewise the correspondence principle itself? To discuss these questions, my talk focuses on the work of James Franck and Friedrich Hund on the Ramsauer effect in 1922 and follows the interrelation of the developing understanding of a newly found effect and the adaptation of the correspondence idea in a new conceptual and sociological context.

  1. The uncertainty principle

    International Nuclear Information System (INIS)

    Martens, Hans.

    1991-01-01

    The subject of this thesis is the uncertainty principle (UP). The UP is one of the most characteristic points of differences between quantum and classical mechanics. The starting point of this thesis is the work of Niels Bohr. Besides the discussion the work is also analyzed. For the discussion of the different aspects of the UP the formalism of Davies and Ludwig is used instead of the more commonly used formalism of Neumann and Dirac. (author). 214 refs.; 23 figs

  2. Quantum field theory with infinite component local fields as an alternative to the string theories

    Science.gov (United States)

    Krasnikov, N. V.

    1987-09-01

    We show that the introduction of the infinite component local fields with higher-order derivatives in the interaction makes the theory completely ultraviolet finite. For the γ5-anomalous theories the introduction of the infinite component field makes the theory renormalizable or even superrenormalizable. I am indebted to J. Ambjōrn, P. Di Vecchia, H.B. Nielsen and L. Rozhansky for useful discussions. It is a pleasure to thank the Niels Bohr Institute (Copenhagen) where this work was completed for kind hospitality.

  3. Reconciling Through Science Exhibition Science Bringing Nations Together

    CERN Multimedia

    2000-01-01

    Over 200 experiments are carried out now with the pulsed neutron reactor IBR-2. They involve physicists, biologists and chemists from the scientific centres of the JINR Member States and other countries. Major contributions are made by the physicists from Germany, Hungary, Poland, and Russia. During a visit to Dubna, Niels Bohr took an interest in a simple idea behind the periodic pulsed reactor and said: "I admire the courage of the people who ventured to build such a remarkable facility!"

  4. EPR and Bell Locality

    OpenAIRE

    Norsen, Travis

    2004-01-01

    A new formulation of the EPR argument is presented, one which uses John Bell's mathematically precise local causality condition in place of the looser locality assumption which was used in the original EPR paper and on which Niels Bohr seems to have based his objection to the EPR argument. The new formulation of EPR bears a striking resemblance to Bell's derivation of his famous inequalities. The relation between these two arguments -- in particular, the role of EPR as part one of Bell's two-...

  5. Communicating the Heisenberg uncertainty relations: Niels Bohr, Complementarity and the Einstein-Rupp experiments

    NARCIS (Netherlands)

    van Dongen, Jeroen|info:eu-repo/dai/nl/242629431

    2015-01-01

    The Einstein-Rupp experiments have been unduly neglected in the history of quantum mechanics. While this is to be explained by the fact that Emil Rupp was later exposed as a fraud and had fabricated the results, it is not justified, due to the importance attached to the experiments at the time. This

  6. George de Hevesy

    International Nuclear Information System (INIS)

    Levi, H.

    1985-01-01

    George de Hevesy (1875-1966) worked with Rutherford in Manchester in the early 1900's and with Niels Bohr in Denmark after the first world war. With Coster he discovered an unknown element, later named Hafrivm. In the 1930's he moved to Copenhagen and developed radiotracer techniques using the new artificially produced radioisotopes. This work found wide application in medicine and biology and other branches of science and technology and for his pioneer work de Hevesy was awarded a Nobel Prize in 1944. (UK)

  7. Heisenberg, his wife s account

    International Nuclear Information System (INIS)

    Heisenberg, E.

    1990-01-01

    A wife tells about her husband life, Werner Heisenberg, Physics Nobel Price in 1932. After a happy childhood, this brilliant student was Albert Einstein, Niels Bohr, Arnold Sommerfeld s student. But at the nazism time, the great physician refused to leave his country, guaranteeing the Hitler regime and taking part in effort of war, that is to say the run to the bomb. The account of Elisabeth Heisenberg, although subjective, allows to understand the scientist s behaviour face terrifying realities of his time. (N.C.)

  8. Dynamical phase transitions in quantum mechanics

    International Nuclear Information System (INIS)

    Rotter, Ingrid

    2012-01-01

    1936 Niels Bohr: In the atom and in the nucleus we have indeed to do with two extreme cases of mechanical many-body problems for which a procedure of approximation resting on a combination of one-body problems, so effective in the former case, loses any validity in the latter where we, from the very beginning, have to do with essential collective aspects of the interplay between the constituent particles. 1963: Maria Goeppert-Mayer and J. Hans D. Jensen received the Nobel Prize in Physics for their discoveries concerning nuclear shell structure. State of the art 2011: - The nucleus is an open quantum system described by a non-Hermitian Hamilton operator with complex eigenvalues. The eigenvalues may cross in the complex plane ('exceptional points'), the phases of the eigenfunctions are not rigid in approaching the crossing points and the widths bifurcate. By this, a dynamical phase transition occurs in the many-level system. The dynamical phase transition starts at a critical value of the level density. Hence the properties of he low-lying nuclear states (described well by the shell model) and those of highly excited nuclear states (described by random ensembles) differ fundamentally from one another. The statement of Niels Bohr for compound nucleus states at high level density is not in contradiction to the shell-model description of nuclear (and atomic) states at low level density. Dynamical phase transitions are observed experimentally in different systems, including PT-symmetric ones, by varying one or more parameters

  9. The bishop and anatomist Niels Stensen (1638-1686) and his contributions to our early understanding of the brain.

    Science.gov (United States)

    Tubbs, R Shane; Mortazavi, Martin M; Shoja, Mohammadali M; Loukas, Marios; Cohen-Gadol, Aaron A

    2011-01-01

    Many physicians are familiar with the parotid duct and the Danish physician/anatomist's name associated with it. However, most are unaware of Niels Stensen's life and his significant contributions to the early study of the brain. This physician of the Medici court was clearly ahead of his time and found errors in the publications of such giants as Varolius and Willis. The present review discusses the life of this seventeenth century anatomist, physician, and priest/bishop and highlights his contributions to neuroanatomy.

  10. On the relation between the interacting boson model of Arima and Iachello and the collective model of Bohr and Mottelson

    International Nuclear Information System (INIS)

    Assenbaum, H.J.; Weiguny, A.

    1982-01-01

    The generator coordinate method is used to relate the interacting boson model of Arima and Iachello and the collective model of Bohr and Mottelson through an isometric transformation. It associates complex parameters to the original boson operators whereas the ultimate collective variables are real. The absolute squares of the collective wave functions can be given a direct probability interpretation. The lowest order Bohr-Mottelson hamiltonian is obtained in the harmonic approximation to the interacting boson model; unharmonic coupling terms render the collective potential to be velocity-dependent. (orig.)

  11. Conference: STANDARD MODEL @ LHC

    CERN Multimedia

    2012-01-01

    HCØ institute Universitetsparken 5 DK-2100 Copenhagen Ø Denmark Room: Auditorium 2 STANDARD MODEL @ LHC Niels Bohr International Academy and Discovery Center 10-13 April 2012 This four day meeting will bring together both experimental and theoretical aspects of Standard Model phenomenology at the LHC. The very latest results from the LHC experiments will be under discussion. Topics covered will be split into the following categories:     * QCD (Hard,Soft & PDFs)     * Vector Boson production     * Higgs searches     * Top Quark Physics     * Flavour physics

  12. Can Yin-Yang Guide Chinese Indigenous Management Research?

    DEFF Research Database (Denmark)

    Li, Xin

    2014-01-01

    : Chinese Yin-Yang philosophy, Hegel's dialectic, and Niels Bohr's complementarity principle, as well as Aristotle's formal (either/or) logic. I show that the four logical systems have differences and similarities and show that Westerners can and do think dialectically. I also argue that Chinese Yin......-Yang philosophy, while useful and powerful in some situations, is not always superior to the other logical systems and philosophies. My purpose is to alert Chinese management scholars to the dangers of overconfidence and to stimulate discussion and debate on the true value of Yin-Yang in particular...

  13. La gamba di Tamerlano. Contestualizzazione del sintomo e prospettiva metaculturale nell’etnopsichiatria di Georges Devereux

    Directory of Open Access Journals (Sweden)

    Viola Carofalo

    2014-06-01

    Full Text Available The aim of the reflection of Georges Devereux is the establishment of a therapeutic practice in the ethnopsychiatric field, based on the complementary idea of the Danish mathematician Niels Bohr. This article will show how Devereux applies this principle to the studies on mental illness suffered by the Plains Indian during the mid-fifties, using his skills in the fields of anthropology and psychoanalysis. It will give a special attention to the case of Jimmy Picard, the main character of the famous essay Reality and dream: Psychotherapy of a Plains Indian.

  14. Haphazard Reality Half a Century of Science

    CERN Document Server

    Casimir, HBG

    2010-01-01

    Casimir, himself a famous physician, studied and worked with three great physicists of the twentieth century: Niels Bohr, Wolfgang Pauli and Paul Ehrenfest. In his autobiography, the brilliant theoretician lets the reader witness the revolution that led to quantum physics, whose influence on modern society turned out to be many times larger than the first atomic physicists could have imagined. Through his involvement in the technical-scientific and the business aspects of physics, through management positions at Philips Research Laboratory and as a member of the Board of Directors of Philips,

  15. The birth of CERN

    CERN Multimedia

    Parkins, David

    2017-01-01

    At an intergovernmental meeting of UNESCO in Paris in December 1951, the first resolution concerning the establishment of a European Council for Nuclear Research was adopted. Two months later, 11 countries signed an agreement establishing the provisional council – the acronym CERN was born. This humoristic drawing features some of the main characters who were involved in the establishment of CERN. On the American hen: Isidor Rabi and Robert Oppenheimer, while on the hatching egg we recognize Francis Perrin (France), Niels Bohr (Denmark), Werner Heisenberg (Germany) and Sir George Paget Thomson (United Kingdom).

  16. Virtual neutron scattering experiments

    DEFF Research Database (Denmark)

    Overgaard, Julie Hougaard; Bruun, Jesper; May, Michael

    2017-01-01

    . In the last week of the course, students travel to a large-scale neutron scattering facility to perform real neutron scattering experiments. Through student interviews and survey answers, we argue, that the virtual training prepares the students to engage more fruitfully with experiments by letting them focus......We describe how virtual experiments can be utilized in a learning design that prepares students for hands-on experiments at large-scale facilities. We illustrate the design by showing how virtual experiments are used at the Niels Bohr Institute in a master level course on neutron scattering...

  17. 3 minutes to understand the 50 greatest theories of quantum physics

    International Nuclear Information System (INIS)

    Clegg, Brian; Ball, Philip; Clifford, Leon; Close, Frank; Hebden, Sophie; Hellemans, Alexander; Holgate, Sharon Ann; May, Andrew; Martinez, Rachel; Dubois, Richard

    2015-01-01

    This book aims at using 2 pages, 300 words and 1 image to explain each of the 50 most important theories of quantum physics. After a first part addressing the origins of the theory (Planck quanta, the photoelectric effect according to Einstein, the predictable Balmer series, the Bohr's atom, the wave/particle duality, the matter waves of De Broglie, the double quantum slit), the chapters address basic notions (quantum spin, matrix mechanics, Schroedinger's equation and cat, the Heisenberg uncertainty principle, the wave function reduction, the decoherence), light and matter physics, quantum effects and their interpretation, quantum entanglement, quantum applications, and quantum extremes. Each chapter proposes a glossary, a presentation of specific issues according to the adopted format, and a portrait of a scientist involved in the addressed topics (Niels Bohr, Erwin Schroedinger, Paul Dirac, David Bohm, John Bell, Brian Josephson, and Satyendra Nath Bose)

  18. Nuclear structure at the limits of resolution: Looking through individual wave functions

    Energy Technology Data Exchange (ETDEWEB)

    Zelevinsky, V.G. [Michigan State Univ., East Lansing, MI (United States)

    1996-12-31

    60 years ago Niels Bohr suggested the idea of the compound nucleus. Bohr`s picture strongly resembles that of quantum chaos. Here one comes to the limits of resolution studying particular stationary states at high level density. Present knowledge comes from the experiment and from theoretical constructions, confirmed by the experiment at lower energies and extrapolated into the region where fine resolution measurements are not feasible. Such an analysis was carried out recently for heavy atoms and shell model nuclei. Among complicated states with the same values of integrals of motion, either (i) adjacent states have different structure or (ii) they {open_quotes}look the same{close_quotes} on the microscopic scale. Only (ii) corresponds to strong mixing assumed in the compound nucleus theory. Many-body chaos in nuclei is caused by residual interactions rather than by specific shape of the {open_quotes}container{close_quotes} as in quantum billiards. The shell model, including all degrees of freedom (in truncated space) along with the symmetry requirements, guarantees the correct level density up to some excitation energy. Therefore one can extrapolate the calculations into terra incognita of high lying states.

  19. Bohring-Opitz (Oberklaid-Danks) syndrome: clinical study, review of the literature, and discussion of possible pathogenesis

    DEFF Research Database (Denmark)

    Hastings, Rob; Cobben, Jan-Maarten; Gillessen-Kaesbach, Gabriele

    2011-01-01

    Bohring-Opitz syndrome (BOS) is a rare congenital disorder of unknown etiology diagnosed on the basis of distinctive clinical features. We suggest diagnostic criteria for this condition, describe ten previously unreported patients, and update the natural history of four previously reported patients...

  20. Wave-particle duality and Bohr's complementarity principle in quantum mechanics

    International Nuclear Information System (INIS)

    Sen, D.; Basu, A.N.; Sengupta, S.

    1995-01-01

    Interest on Bohr's complementarity principle has recently been revived particularly because of several thought experiments and some actually performed experiments to test the validity of mutual exclusiveness of wave and particle properties. A critical review of the situation is undertaken and it is pointed out that the problem with mutual exclusiveness arises because of some vagueness in the conventional formulation. An attempt is made to remove this vagueness by connecting the origin of mutual exclusiveness to some principles of quantum mechanics. Accordingly, it becomes obvious that to contradict complementarity principle without contradicting quantum mechanics would be impossible. Some of the recent experiments are critically analysed. (author). 31 refs., 3 ills

  1. André Petermann (1922-2011)

    CERN Multimedia

    2012-01-01

    The CERN theory community mourns the loss of André Petermann, one of the first members of the Theory Division, who passed away last August in his 89th year. He pioneered, together with his advisor Stueckelberg, the renormalization group, one of the fundamental ideas in quantum field theory that underlies the modern theory of phase transitions as well as asymptotic freedom and the quest for unification of all the particle interactions.   André was among the very first staff members of CERN, which at the beginning was a small group of theorists at the Niels Bohr Institute in Copenhagen, headed by Bohr himself.  When the group moved to Geneva, they first occupied a set of barracks in Cointrin, next to the airport, before moving to the University of Geneva, and then finally settling on the Meyrin site. André was our last direct contact with our nomadic origins. The importance of André’s early work on the renormalization group was recogn...

  2. Yoshio Nishina father of modern physics in Japan

    CERN Document Server

    Kim, Dong-Won

    2007-01-01

    Yoshio Nishina not only made a great contribution to the emergence of a research network that produced two Nobel prize winners, but he also raised the overall level of physics in Japan. Focusing on his roles as researcher, teacher, and statesman of science, Yoshio Nishina: Father of Modern Physics in Japan analyzes Nishina''s position in and his contributions to the Japanese physics community.After a concise biographical introduction, the book examines Nishina''s family, his early studies, the creation of RIKEN, and the greater Japanese physics community in the early twentieth century. It then focuses on Nishina''s work at the Cavendish Laboratory and at the University of Göttingen as well as his more fruitful research at Niels Bohr''s Institute of Theoretical Physics in Copenhagen. The book also describes the establishment of the Nishina Laboratory at RIKEN, the collaboration between its experimentalists and theoreticians, and the cosmic ray research of its scientists. The last two chapters discuss Nishina'...

  3. The field treatment of the nuclear spectrum. Historical foundation and two contributions to its ensuing development

    International Nuclear Information System (INIS)

    Bes, Daniel R

    2016-01-01

    The highlights of the model which was developed during the 1950s at the Niels Bohr Institute, Copenhagen, under the leadership of Aage Bohr and Ben Mottelson, are described in this contribution. Subsequently, it is shown that the field concept—the fundamental tool of the unified model—is not only an intelligent guess to describe the difficult many-body nuclear system. By means of a systematic expansion of field-coupling effects, the nuclear field theory (NFT) accounts for the overcompleteness of the initial product basis and the overlooking of the Pauli principle acting between constituents of the basis. Eventually it leads to the exact solution of the nuclear many-body problem. The description in terms of fields involves another problem if the field violates a symmetry inherent to the initial problem. The solution is borrowed from the BRST treatments of gauge systems, in which the lost symmetry is replaced by a more powerful one. (invited comment)

  4. Oxygen affinity and Bohr effect responses to 2,3-diphosphoglycerate in equine and human blood.

    Science.gov (United States)

    diBella, G; Scandariato, G; Suriano, O; Rizzo, A

    1996-05-01

    The dependence of blood oxygen affinity and the Bohr effect on the concentration of 2,3-diphosphoglycerate (DPG) in erythrocytes was investigated in 24 trotter horses and 24 healthy men. The oxygen tension at half saturation and standard conditions (P50st at pH 7.4, PCO2(40) mmHg and 37 degrees C) and the carbon dioxide or fixed-acid-induced Bohr effect (dlogP50/dpH) were determined. Samples of fresh blood and blood depleted of or enriched with DPG were studied. In the absence of measurable DPG, the equine and human blood had similar mean (SD) values of P50st (16.6 [0.6] and 16.2 [0.7] mmHg, respectively). In both species these values increased with increasing DPG, but the response of equine blood was significantly lower, at least up to physiological values (P50st = 24.6 [0.6] and 26.2 [0.7]) mmHg; DPG = 14([1.8] and 12.8 [1.2] mumol gHb-1, respectively, in fresh blood). For concentrations above 20 to 25 mumol gHb-1 of DPG the difference between the values of P50st in the two species tended to decrease because the response in human blood reached a plateau. The interactions between the Bohr effect and the concentration of DPG showed that in the horses, as in the men, the level of DPG played an important role in governing the relative magnitude of carbon dioxide and fixed acid factors. The difference between them, which is associated with the oxylabile carbamino binding, was greatest in DPG-depleted blood, but whereas in the men the difference was suppressed by an above normal DPG concentration, in the horses it was still measurable.

  5. Einstein wrote back my life in physics

    CERN Document Server

    Moffat, John W

    2012-01-01

    John W. Moffat was a poor student of math and science. That is, until he read Einstein's famous paper on general relativity. Realizing instantly that he had an unusual and unexplained aptitude for understanding the complex physics described in the paper, Moffat wrote a letter to Einstein that would change the course of his life. Einstein Wrote Back tells the story of Moffat's unusual entry into the world of academia and documents his career at the frontlines of twentieth-century physics as he worked and associated with some of the greatest minds in scientific history, including Niels Bohr,

  6. La física de la próxima década

    OpenAIRE

    Paz, Juan Pablo

    2015-01-01

    Esta frase, atribuida a Niels Bohr, es apropiada para encabezar un artículo que intenta predecir las cuestiones centrales de la física de la próxima década. Hoy, muchos problemas relevantes, tal vez los más relevantes, requieren de un enfoque interdisciplinario. No son problemas exclusivos de la física y por eso no los mencionaré aquí. Presentaré, en cambio, una selección subjetiva y discrecional de los temas centrales de la física que, a mi juicio, serán los protagonistas de la década. Mi pr...

  7. Danish cadres in the Comintern

    DEFF Research Database (Denmark)

    Larsen, Chris Holmsted

    caught the attention of the Comintern. A further category consisted of scientists. One example was a case file on the physicist Niels Bohr, who also was part of the British team of physicists working on the Manhattan Project. As for the communists, we were positively surprised by the fact, that the files......, and halfway expected disappointment, was that the collected material did not include much information on the secret and illegal work of the Comintern, or more specifically the OMS. For example the prewar acts of bombing and sabotage, committed by the so called Wollweber Network, in Denmark, and Danish...

  8. Getting ready for SPS beam

    CERN Multimedia

    CERN PhotoLab

    1977-01-01

    View from downstream of the WA7 experiment along beam H1B. In the foreground are scintillator hodoscopes and immediately behind them, is a threshold Cerenkov counter, standing on its edge. The WA7 control hut is located on the right, over the concrete shielding blocks. Still more right, the other branch of the H1 beam, E1A/H1A, runs towards the Omega Facility. WA7 by the CERN-Genoa-LAPP, Annecy-Niels Bohr Institute, Copenhagen-Oslo, University College, London Collaboration was meant to study two-body reactions at large transverse momentum.

  9. Lectures in Micro Meteorology

    DEFF Research Database (Denmark)

    Larsen, Søren Ejling

    This report contains the notes from my lectures on Micro scale meteorology at the Geophysics Department of the Niels Bohr Institute of Copenhagen University. In the period 1993-2012, I was responsible for this course at the University. At the start of the course, I decided that the text books...... available in meteorology at that time did not include enough of the special flavor of micro meteorology that characterized the work of the meteorology group at Risø (presently of the Institute of wind energy of the Danish Technical University). This work was focused on Boundary layer flows and turbulence...

  10. Systematic measurements of the Bohr-Weisskopf effect at ISOLDE

    CERN Multimedia

    Nojiri, Y; Matsuki, S; Ragnarsson, I; Neugart, R; Redi, O; Stroke, H H; Duong, H T; Marescaux, D; Pinard, J; Juncar, P; Ekstrom, C; Pellarin, M; Vialle, J-L; Inamura, T

    2002-01-01

    The " Bohr-Weisskopf " effect, or " hyperfine structure (hfs) anomaly ", which results from the effect of the distribution of nuclear magnetization on the electro-nuclear interaction, will be measured systematically at the PS Booster ISOLDE, first for a long chain of radioactive cesium isotopes, analogously to previous isotope shift and hfs studies. In addition to the direct measurement of magnetic moment values, the results are expected to provide independent data for testing nuclear wavefunctions, these will be of importance for interpreting systematic parity non-conservation experiments, complementary to the single isotope study which requires a high precision knowledge of the electron wavefunction. Substantial progress in these calculations has been achieved recently. Precision measurements of the hfs splittings and nuclear magnetic moments are required, with sensitivity adequate for the radioactive isotopes produced. A triple resonance atomic beam magnetic resonance apparatus with optical pumping state s...

  11. Niels Stensen: a 17th century scientist with a modern view of brain organization.

    Science.gov (United States)

    Parent, André

    2013-07-01

    In 1665 the Danish scholar Niels Stensen (1638-1686) reached Paris, where he pronounced a discourse on brain anatomy that was to orient neuroscientists for years to come. In his lecture, Stensen rejected ancient speculations about animal spirits and criticized René Descartes and his followers who, despite a poor knowledge of brain anatomy, elaborated complex models to explain the multifaceted function of what he considered the principal organ of the human mind. He advocated the need for studying the brain through a comparative, developmental and pathological convergent approach and called for appropriate dissection methods and accurate illustrations. His own careful anatomical studies permitted him to precisely depict many brain structures. After pioneering works in paleontology and geology, he devoted himself to theology. In 1677 Stensen converted from Lutheranism to Catholicism and, while working relentlessly as a bishop and apostolic vicar in Northern Europe, he died in self-imposed poverty at age 48.

  12. Anatomy of a reindeer dissected in Copenhagen in 1672 by Niels Stensen as reported by Thomas Bartholin. I. Introduction by Troels Kardel. II. Translation by Paul Maquet

    Directory of Open Access Journals (Sweden)

    Troels Kardel

    2013-03-01

    Full Text Available A report by Professor Thomas Bartholin on the dissection of a reindeer performed in 1672 by his former student Niels Stensen as Royal Anatomist in Copenhagen is presented in English translation with biographical introduction and bibliographical notes. The report is most likely the first of its kind being an early contribution to comparative anatomy.

  13. Limits to the universality of quantum mechanics

    International Nuclear Information System (INIS)

    Josephson, B.D.

    1988-01-01

    Niels Bohr's arguments indicating the non-applicability of quantum methodology to the study of the ultimate details of life, given in his book Atomic Physics and Human Knowledge, conflict with the commonly held opposite view. The bases for the usual beliefs are examined and shown to have little validity; significant differences do exist between the living organism and the type of system studied successfully in the physics laboratory. Dealing with living organisms in quantum-mechanical terms with the same degree of rigor as is normal for non-living systems would seem not to be possible without considering also questions of the origins of life and of the universe

  14. Physics in the twentieth century. A selection of papers. La physique du XXe siecle. Morceaux choisis

    Energy Technology Data Exchange (ETDEWEB)

    Weisskopf, V F

    1974-01-01

    A number of papers from Victor F. Weisskopf have been collected in this book. The papers included in the first part are dealing with basic concepts in quantum mechanics. Particle-wave duality, quantum scale, and the Niels Bohr works. Papers in the second part describe the recent developments in the physics field during the 20th century: the electron theory, compound nucleus, nuclear structure, and quantum theory of elementary particles. The third part is concerned with peculiar cases: nuclear models, the Lorentz relativistic contraction, light-matter interaction, parity decay, and symmetry. In the fourth part are gathered papers on sciences in general, for which they present a sort of natural philosophy.

  15. 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...

  16. Michael Frayn visits CERN

    CERN Multimedia

    2007-01-01

    Award-winning playwright and novelist Michael Frayn gave a guest lecture in the main auditorium at CERN on Friday 15 March about his new book The Human Touch: Our Part in the Creation of the Universe. The lecture focused on cosmology and philosophy and the limitations that language places on our ability to understand the creation of a universe in which we seem to play such a small part. In addition to his novels and plays, which include Copenhagen, a play about the 1941 meeting between German physicist Werner Heisenberg and Danish physicist Niels Bohr, Frayn has translated several works from Russian, including plays by Chekhov and Tolstoy.

  17. Contributions from Women to the Radiation Sciences: A Brief History.

    Science.gov (United States)

    Martinez, Nicole E

    2017-04-01

    Contributions from men to radiation science are well known, particularly the early contributions from such luminaries as William Roentgen, James Chadwick, Niels Bohr, Robert Oppenheimer, and the like. Although not ignored per se, beyond Marie Curie and Lise Meitner, the contributions of female nuclear scientists are not as widely recognized. This paper provides a concise historical summary of contributions to radiation science from the discovery of radiation through the current status of international leadership within the radiation protection community. Beyond lead scientists and academics, this paper also considers support personnel as well as the role women have played in the advancement of radiation epidemiology.

  18. Improving students' meaningful learning on the predictive nature of quantum mechanics

    Directory of Open Access Journals (Sweden)

    Rodolfo Alves de Carvalho Neto

    2009-03-01

    Full Text Available This paper deals with research about teaching quantum mechanics to 3rd year high school students and their meaningful learning of its predictive aspect; it is based on the Master’s dissertation of one of the authors (CARVALHO NETO, 2006. While teaching quantum mechanics, we emphasized its predictive and essentially probabilistic nature, based on Niels Bohr’s complementarity interpretation (BOHR, 1958. In this context, we have discussed the possibility of predicting measurement results in well-defined experimental contexts, even for individual events. Interviews with students reveal that they have used quantum mechanical ideas, suggesting their meaningful learning of the essentially probabilistic predictions of quantum mechanics.

  19. Atomic Pioneers Book 3 From the Late 19th to the Mid-20th Century

    Energy Technology Data Exchange (ETDEWEB)

    Hiebert, Ray [University of Maryland; Hiebert, Roselyn

    1973-01-01

    This book tells the story of the atom by presenting a brief account of the lives and work of 24 atomic scientists who brought the world into the complex Age of the Atom by mid-20th century. The 24 are: Albert Einstein, James Franck, Max Born, Peter J.W. Debye, Niels Bohr, George von Hevesy, Henry G.J. Moseley, Gustav Hertz, Erwin Schrodinger, Otto Stern, James Chadwick, Arthur H. Compton, Louis Victor de Broglie, Harold C. Urey, John D. Cockcroft, Patrick M.S. Blackett, Isidor I. Rabi, Leo Szilard, Jean Frederic Joliot-Curie, Irene Joliot-Curie, Wolfgang Pauli, Ernest O. Lawrence, Enrico Fermi, and Robert J. Van de Graaff.

  20. High resolution gamma-ray spectroscopy and the fascinating angular momentum realm of the atomic nucleus

    International Nuclear Information System (INIS)

    Riley, M A; Simpson, J; Paul, E S

    2016-01-01

    In 1974 Aage Bohr and Ben Mottelson predicted the different ‘phases’ that may be expected in deformed nuclei as a function of increasing angular momentum and excitation energy all the way up to the fission limit. While admitting their picture was highly conjectural they confidently stated ‘...with the ingenious experimental approaches that are being developed, we may look forward with excitement to the detailed spectroscopic studies that will illuminate the behaviour of the spinning quantised nucleus’ . High resolution gamma-ray spectroscopy has indeed been a major tool in studying the structure of atomic nuclei and has witnessed numerous significant advances over the last four decades. This article will select highlights from investigations at the Niels Bohr Institute, Denmark, and Daresbury Laboratory, UK, in the late 1970s and early 1980s, some of which have continued at other national laboratories in Europe and the USA to the present day. These studies illustrate the remarkable diversity of phenomena and symmetries exhibited by nuclei in the angular momentum–excitation energy plane that continue to surprise and fascinate scientists. (invited comment)

  1. A Historical Survey of Sir Karl Popper's Contribution to Quantum Mechanics

    Directory of Open Access Journals (Sweden)

    William M. Shields

    2012-11-01

    Full Text Available Sir Karl Popper (1902-1994, though not trained as a physicist and embarrassed early in his career by a physics error pointed out by Einstein and Bohr, ultimately made substantial contributions to the interpretation of quantum mechanics. As was often the case, Popper initially formulated his position by criticizing the views of others - in this case Niels Bohr and Werner Heisenberg. Underlying Popper's criticism was his belief that, first, the Copenhagen interpretation of quantum mechanics abandoned scientific realism and second, the assertion that quantum theory was complete (an assertion rejected by Einstein among others amounted to an unfalsifiable claim. Popper insisted that the most basic predictions of quantum mechanics should continue to be tested, with an eye towards falsification rather than mere adding of decimal places to confirmatory experiments. His persistent attacks on the Copenhagen interpretation were aimed not at the uncertainty principle itself and the formalism from which it was derived, but at the acceptance by physicists of an unclear epistemology and ontology that left critical questions unanswered. Quanta 2012; 1: 1–12.

  2. Physics comes to the stage

    CERN Multimedia

    2005-01-01

    The Théâtre de Carouge - Atelier de Genève is putting on two plays as part of the World Year of Physics in 2005. Both plays pay tribute to scientists past and future, and the decisive choices they are called upon to make when their discoveries affect the destiny of mankind. "The Physicists" by Friedrich Dürrenmatt until 20 February 2005 How can one control extraordinary and potentially dangerous discoveries? That is the question put by Friedrich Dürrenmatt in this thriller-cum-spy drama. A physicist in a mental asylum is in fact a genius who has realised that his fundamental discoveries can bring about the destruction of the planet and mankind. "Copenhagen" by Michael Frayn on 29 January and on 4, 10, 15 and 16 February 2005 Why did Werner Heisenberg, who was involved in the Third Reich's nuclear research programme, visit his friend and mentor Niels Bohr in occupied Denmark in September 1941? Was it a deliberate attempt to mislead the allies, whose cause Bohr supported? Or was h...

  3. Physics comes to the stage

    CERN Multimedia

    2005-01-01

    The Théâtre de Carouge - Atelier de Genève is putting on two plays as part of the World Year of Physics in 2005. Both plays pay tribute to scientists past and future, and the decisive choices they are called upon to make when their discoveries affect the destiny of mankind. "The Physicists" by Friedrich Dürrenmatt until 20 February 2005 How can one control extraordinary and potentially dangerous discoveries? That is the question put by Friedrich Dürrenmatt in this thriller-cum-spy drama. A physicist in a mental asylum is in fact a genius who has realised that his fundamental discoveries can bring about the destruction of the planet and mankind. "Copenhagen" by Michael Frayn on 29 January and on 4, 10, 15 and 16 February 2005 Why did Werner Heisenberg, who was involved in the Third Reich's nuclear research programme, visit his friend and mentor Niels Bohr in occupied Denmark in September 1941? Was it a deliberate attempt to mislead the allies, whose cause Bohr supported? Or was he r...

  4. High resolution gamma-ray spectroscopy and the fascinating angular momentum realm of the atomic nucleus

    Science.gov (United States)

    Riley, M. A.; Simpson, J.; Paul, E. S.

    2016-12-01

    In 1974 Aage Bohr and Ben Mottelson predicted the different ‘phases’ that may be expected in deformed nuclei as a function of increasing angular momentum and excitation energy all the way up to the fission limit. While admitting their picture was highly conjectural they confidently stated ‘...with the ingenious experimental approaches that are being developed, we may look forward with excitement to the detailed spectroscopic studies that will illuminate the behaviour of the spinning quantised nucleus’. High resolution gamma-ray spectroscopy has indeed been a major tool in studying the structure of atomic nuclei and has witnessed numerous significant advances over the last four decades. This article will select highlights from investigations at the Niels Bohr Institute, Denmark, and Daresbury Laboratory, UK, in the late 1970s and early 1980s, some of which have continued at other national laboratories in Europe and the USA to the present day. These studies illustrate the remarkable diversity of phenomena and symmetries exhibited by nuclei in the angular momentum-excitation energy plane that continue to surprise and fascinate scientists.

  5. Systematic Measurements of the Bohr-Weisskopf Effect at ISOLDE

    CERN Multimedia

    2002-01-01

    Nuclear electric and magnetic structure properties are measurable by high-resolution atomic spectroscopy through isotope shifts and the Bohr-Weisskopf effect (hyperfine structure anomalies). \\\\ \\\\ The greatest value of these measurements is when made systematically over a large number of isotopes. This has been done in the case of isotopes shifts most extensively by the experiment at ISOLDE. To date the magnetic distribution studies are few and isolated. Here we propose to intitiate a program at ISOLDE to measure hfs anomalies systematically. The experiments, requiring high-precision data on magnetic dipole constants as well as on nuclear g-factors, will be done by atomic-beam magnetic resonance with the use of laser excitation for polarization of the beam and a sixpole magnet acting as an analyser. \\\\ \\\\ The heavy alkali elements are the most promising candidates for hfs anomaly studies because of the large effect expected, the high production yields at ISOLDE and most importantly, the interesting variations...

  6. Diffusive insights: on the disagreement of Christian Bohr and August Krogh at the Centennial of the Seven Little Devils

    DEFF Research Database (Denmark)

    Gjedde, Albert

    2010-01-01

    The year 2010 is the centennial of the publication of the “Seven Little Devils” in the predecessor of Acta Physiologica. In these seven papers, August and Marie Krogh sought to refute Christian Bohr's theory that oxygen diffusion from the lungs to the circulation is not entirely passive but rather...

  7. Virtual neutron scattering experiments - Training and preparing students for large-scale facility experiments

    Directory of Open Access Journals (Sweden)

    Julie Hougaard Overgaard

    2016-11-01

    Full Text Available Dansk Vi beskriver, hvordan virtuelle eksperimenter kan udnyttes i et læringsdesign ved at forberede de studerende til hands-on-eksperimenter ved storskalafaciliteter. Vi illustrerer designet ved at vise, hvordan virtuelle eksperimenter bruges på Niels Bohr Institutets kandidatkursus om neutronspredning. I den sidste uge af kurset, rejser studerende til et storskala neutronspredningsfacilitet for at udføre neutronspredningseksperimenter. Vi bruger studerendes udsagn om deres oplevelser til at argumentere for, at arbejdet med virtuelle experimenter forbereder de studerende til at engagere sig mere frugtbart med eksperimenter ved at lade dem fokusere på fysikken og relevante data i stedet for instrumenternes funktion. Vi hævder, at det er, fordi de kan overføre deres erfaringer med virtuelle eksperimenter til rigtige eksperimenter. Vi finder dog, at læring stadig er situeret i den forstand, at kun kendskab til bestemte eksperimenter overføres. Vi afslutter med at diskutere de muligheder, som virtuelle eksperimenter giver. English We describe how virtual experiments can be utilized in a learning design that prepares students for hands-on experiments at large-scale facilities. We illustrate the design by showing how virtual experiments are used at the Niels Bohr Institute in a master level course on neutron scattering. In the last week of the course, students travel to a large-scale neutron scattering facility to perform real neutron scattering experiments. Through student interviews and survey answers, we argue, that the virtual training prepares the students to engage more fruitfully with experiments by letting them focus on physics and data rather than the overwhelming instrumentation. We argue that this is because they can transfer their virtual experimental experience to the real-life situation. However, we also find that learning is still situated in the sense that only knowledge of particular experiments is transferred. We proceed to

  8. Inspirations from the theories of Bohr and Mottelson: a Canadian perspective

    International Nuclear Information System (INIS)

    Ward, D; Waddington, J C; Svensson, C E

    2016-01-01

    The theories developed by Bohr and Mottelson have inspired much of the world-wide experimental investigation into the structure of the atomic nucleus. On the occasion of the 40th anniversary of the awarding of their Nobel prize, we reflect on some of the experimental developments made in understanding the structure of nuclei. We have chosen to focus on experiments performed in Canada, or having strong ties to Canada, and the work included here spans virtually the whole of the second half of the 20th century. The 8π Spectrometer, which figures prominently in this story, was a novel departure for funding science in Canada that involved an intimate collaboration between a Crown Corporation (Atomic Energy of Canada Ltd) and University research, and enabled many of the insights discussed here. (invited comment)

  9. Bohr Hamiltonian with an energy-dependent γ-unstable Coulomb-like potential

    Energy Technology Data Exchange (ETDEWEB)

    Budaca, R. [Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele (Romania)

    2016-10-15

    An exact analytical solution for the Bohr Hamiltonian with an energy-dependent Coulomb-like γ-unstable potential is presented. Due to the linear energy dependence of the potential's coupling constant, the corresponding spectrum in the asymptotic limit of the slope parameter resembles the spectral structure of the spherical vibrator, however with a different state degeneracy. The parameter free energy spectrum as well as the transition rates for this case are given in closed form and duly compared with those of the harmonic U(5) dynamical symmetry. The model wave functions are found to exhibit properties that can be associated to shape coexistence. A possible experimental realization of the model is found in few medium nuclei with a very low second 0{sup +} state known to exhibit competing prolate, oblate and spherical shapes. (orig.)

  10. Diffusive Insights: On the Disagreement of Christian Bohr and August Krogh at the Centennial of the Seven Little Devils

    Science.gov (United States)

    Gjedde, Albert

    2010-01-01

    The year 2010 is the centennial of the publication of the "Seven Little Devils" in the predecessor of "Acta Physiologica". In these seven papers, August and Marie Krogh sought to refute Christian Bohr's theory that oxygen diffusion from the lungs to the circulation is not entirely passive but rather facilitated by a specific cellular activity…

  11. Effectiveness of an Asynchronous Online Module on University Students' Understanding of the Bohr Model of the Hydrogen Atom

    Science.gov (United States)

    Farina, William J., Jr.; Bodzin, Alec M.

    2018-01-01

    Web-based learning is a growing field in education, yet empirical research into the design of high quality Web-based university science instruction is scarce. A one-week asynchronous online module on the Bohr Model of the atom was developed and implemented guided by the knowledge integration framework. The unit design aligned with three identified…

  12. The divine clockwork: Bohr's correspondence principle and Nelson's stochastic mechanics for the atomic elliptic state

    International Nuclear Information System (INIS)

    Durran, Richard; Neate, Andrew; Truman, Aubrey

    2008-01-01

    We consider the Bohr correspondence limit of the Schroedinger wave function for an atomic elliptic state. We analyze this limit in the context of Nelson's stochastic mechanics, exposing an underlying deterministic dynamical system in which trajectories converge to Keplerian motion on an ellipse. This solves the long standing problem of obtaining Kepler's laws of planetary motion in a quantum mechanical setting. In this quantum mechanical setting, local mild instabilities occur in the Keplerian orbit for eccentricities greater than (1/√(2)) which do not occur classically

  13. Léon Rosenfeld physics, philosophy, and politics in the twentieth century

    CERN Document Server

    Jacobsen, Anja Skaar

    2012-01-01

    This book is a social-intellectual biography of the Belgian physicist Léon Rosenfeld (1904-1974). Rosenfeld was at the center of modern theoretical physics and he became the Danish physicist Niels Bohr's right-hand man. Rosenfeld was a perceptive, polyglot cosmopolitan, whose life crossed those of many important people in many countries. He was also a strong integrated personality capable of performing exotic calculations at one moment, while disentangling subtle philosophical questions or intervening in a political discussion the next — all at the highest level. This book aims at a broad audience interested in contextual history of twentieth century physics. No specialized knowledge of physics is required to read it.

  14. Heisenberg 1901-1976 : le témoignage de sa femme

    CERN Document Server

    Heisenberg, Elisabeth

    1990-01-01

    Une femme raconte la vie de son mari, Werner Heisenberg, Prix Nobel de Physique 1932. Après une enfance heureuse, ce brillant étudiant fut l'élève d'Albert Einstein, Niels Bohr, Arnold Sommerfeld. Mais à l'époque de la montée du nazisme, le grand physicien refusa de quitter son pays, cautionnant ainsi le régime d'Hitler et participant à "l'effort de guerre", c'est-à-dire à la course à la bombe. Le témoignage d'Elisabeth Heisenberg bien que naturellement subjectif, permet de saisir les ressorts psychologiques du comportement d'un savant face aux terrifiantes réalités de son époque.

  15. The backstairs to the quantum jump. The research of the smallest particles from Max Planck to Anton Zeilinger

    International Nuclear Information System (INIS)

    Fischer, Ernst Peter

    2010-01-01

    Who doesn't know the quantum jumps, which politicians like to promise in their speeched? But what the quantum jump in physics precisely means know only very few people. For this brings no enormous progress, but is in an ironical way the smallest change, which an atom can perform. This and other misunderstandings discovers Professor Ernst Peter Fischer in his new book. With funny comparisons from daily life he leads even laymen via ''The Backstairs to the Quantum Jump'' to the most important physical results. For this he characterizes important physicists like Niels Bohr, Alber Einstein, or Max Planck, and enters not only their discoveries, but also their personalities behind the genius.

  16. The backstairs to the quantum jump. The research of the smallest particles from Max Planck to Anton Zeilinger; Die Hintertreppe zum Quantensprung. Die Erforschung der kleinsten Teilchen von Max Planck bis Anton Zeilinger

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, Ernst Peter

    2010-07-01

    Who doesn't know the quantum jumps, which politicians like to promise in their speeched? But what the quantum jump in physics precisely means know only very few people. For this brings no enormous progress, but is in an ironical way the smallest change, which an atom can perform. This and other misunderstandings discovers Professor Ernst Peter Fischer in his new book. With funny comparisons from daily life he leads even laymen via ''The Backstairs to the Quantum Jump'' to the most important physical results. For this he characterizes important physicists like Niels Bohr, Alber Einstein, or Max Planck, and enters not only their discoveries, but also their personalities behind the genius.

  17. Decay out of the superdeformed band in {sup 143}Eu

    Energy Technology Data Exchange (ETDEWEB)

    Atac, A; Piiparinen, M; Herskind, B [Copenhagen Univ. (Denmark); and others

    1992-08-01

    The connection between the super-deformed (SD) and normal-deformed (ND) states had not been observed, owing its difficulty to a statistical, highly fragmented decay path out of the SD bands. This left both the spin and the excitation energy of the SD bands undetermined. In this paper, the authors present results of a new experimental approach, where they take advantage of triple and higher-fold coincidences to study the decay-out of a SD band. They carried out an experiment at the Niels Bohr Institute Tandem Accelerator Laboratory, where they used the (160 MeV) {sup 37}Cl + {sup 110}Pd {yields} {sup 143}Eu + 4n reaction. 9 refs., 3 figs.

  18. Learning through reactions

    DEFF Research Database (Denmark)

    Hasse, Cathrine

    2007-01-01

    Universities can from the student?s point of view be seen as places of learning an explicit curriculum of a particular discipline. From a fieldwork among physicist students at the Niels Bohr Institute in Denmark, I argue that the learning of cultural code-curricula in higher educational...... institutions designate in ambiguous ways. I argue claim that students also have to learn institutional cultural codes, which are not the explicit curricula presented in textbooks, but a socially designated cultural code-curricula learned through everyday interactions at the university institutes. I further...... argue that this code-curriculum is learned through what I shall term indefinite learning processes, which are mainly pre-discursive to the newcomer...

  19. Physics in the twentieth century. A selection of papers

    International Nuclear Information System (INIS)

    Weisskopf, V.F.

    1974-01-01

    A number of papers from Victor F. Weisskopf have been collected in this book. The papers included in the first part are dealing with basic concepts in quantum mechanics. Particle-wave duality, quantum scale, and the Niels Bohr works. Papers in the second part describe the recent developments in the physics field during the 20th century: the electron theory, compound nucleus, nuclear structure, and quantum theory of elementary particles. The third part is concerned with peculiar cases: nuclear models, the Lorentz relativistic contraction, light-matter interaction, parity decay, and symmetry. In the fourth part are gathered papers on sciences in general, for which they present a sort of natural philosophy [fr

  20. Investigation of Bohr Hamiltonian in presence of Killingbeck potential using bi-confluent Heun functions

    Science.gov (United States)

    Sobhani, Hadi; Hassanabadi, Hassan; Chung, Won Sang

    2018-05-01

    In this study, Bohr Hamiltonian is studied for the triaxial and rotational cases. In both cases, Killingbeck potential is used as interaction. The wave function and energy of these cases are found using bi-confluent Heun functions. The results are examined by reproducing experimental data of some isotopes for each case. Energy levels of the isotopes are shown graphically as well as theoretical results for staggering in γ bands of the isotopes is discussed. In the next step, we argue about B (E 2) transition rates of the isotopes for each case. The results have a good agreement with experimental data.

  1. Excited collective states of nuclei within Bohr Hamiltonian with Tietz-Hua potential

    Energy Technology Data Exchange (ETDEWEB)

    Chabab, M.; El Batoul, A.; Lahbas, A.; Oulne, M. [Cadi Ayyad University, High Energy Physics and Astrophysics Laboratory, Faculty of Sciences Semlalia, Marrakesh (Morocco); Hamzavi, M. [University of Zanjan, Department of Physics, Zanjan (Iran, Islamic Republic of)

    2017-07-15

    In this paper, we present new analytical solutions of the Bohr Hamiltonian problem that we derived with the Tietz-Hua potential, here used for describing the β-part of the nuclear collective potential plus that of the harmonic oscillator for the γ-part. Also, we proceed to a systematic comparison of the numerical results obtained with this kind of β-potential with others which are widely used in such a framework as well as with the experiment. The calculations are carried out for energy spectra and electromagnetic transition probabilities for γ-unstable and axially symmetric deformed nuclei. In the same frame, we show the effect of the shape flatness of the β-potential beyond its minimum on transition rates calculations. (orig.)

  2. The quest for reality Bohr and Wittgenstein : two complementary views

    CERN Document Server

    Stenholm, Stig

    2015-01-01

    In both science and philosophy, the twentieth century saw a radical breakdown of certainty in the human worldview, as quantum uncertainty and linguistic ambiguity destroyed the comfortable certitudes of the past. As these disciplines form the foundation for a human position in the world, a major epistemological reorganization had to take place. In this book, quantum theorist Stig Stenholm presents Bohr and Wittgenstein, in physics and in philosophy, as central figures representing this revision. Each of them took up the challenge of replacing apparent order and certainty with a provisional understanding based on limited concepts in constant flux. Stenholm concludes that the modern synthesis created by their heirs is far from satisfactory, and the story is so far an unfinished one. The book will appeal to any researcher in either discipline curious about the foundation of modern science, and works to provoke a renewal of discussion, and the eventual emergence of a reformed clarity and understanding.

  3. A novel system for transcutaneous application of carbon dioxide causing an "artificial Bohr effect" in the human body.

    Directory of Open Access Journals (Sweden)

    Yoshitada Sakai

    Full Text Available BACKGROUND: Carbon dioxide (CO(2 therapy refers to the transcutaneous administration of CO(2 for therapeutic purposes. This effect has been explained by an increase in the pressure of O(2 in tissues known as the Bohr effect. However, there have been no reports investigating the oxygen dissociation of haemoglobin (Hb during transcutaneous application of CO(2in vivo. In this study, we investigate whether the Bohr effect is caused by transcutaneous application of CO2 in human living body. METHODS: We used a novel system for transcutaneous application of CO(2 using pure CO(2 gas, hydrogel, and a plastic adaptor. The validity of the CO(2 hydrogel was confirmed in vitro using a measuring device for transcutaneous CO(2 absorption using rat skin. Next, we measured the pH change in the human triceps surae muscle during transcutaneous application of CO(2 using phosphorus-31 magnetic resonance spectroscopy ((31P-MRS in vivo. In addition, oxy- and deoxy-Hb concentrations were measured with near-infrared spectroscopy in the human arm with occulted blood flow to investigate O2 dissociation from Hb caused by transcutaneous application of CO(2. RESULTS: The rat skin experiment showed that CO(2 hydrogel enhanced CO(2 gas permeation through the rat skin. The intracellular pH of the triceps surae muscle decreased significantly 10 min. after transcutaneous application of CO(2. The NIRS data show the oxy-Hb concentration decreased significantly 4 min. after CO(2 application, and deoxy-Hb concentration increased significantly 2 min. after CO(2 application in the CO(2-applied group compared to the control group. Oxy-Hb concentration significantly decreased while deoxy-Hb concentration significantly increased after transcutaneous CO(2 application. CONCLUSIONS: Our novel transcutaneous CO(2 application facilitated an O(2 dissociation from Hb in the human body, thus providing evidence of the Bohr effect in vivo.

  4. A new atomic model

    International Nuclear Information System (INIS)

    Petrescu, Florian Ion

    2012-01-01

    The movement of an electron around the atomic nucleus has today a great importance in many engineering fields. Electronics, aeronautics, micro and nanotechnology, electrical engineering, optics, lasers, nuclear power, computing, equipment and automation, telecommunications, genetic engineering, bioengineering, special processing, modern welding, robotics, energy and electromagnetic wave field is today only a few of the many applications of electronic engineering. This book presents, shortly, a new and original relation (20 and 20') who determines the radius with that, the electron is running around the nucleus of an atom. One utilizes, two times the Lorenz relation, the Niels Bohr generalized equation, and a mass relation, which was deduced from the kinematics energy relation written in two modes: classical and Coulombian. Equalizing the mass relation with Lorenz relation one obtains a form which is a relation between the squared electron speed (v 2 ) and the radius (r). The second relation between v 2 and r was obtained by equalizing the mass of Bohr equation and the mass of Lorenz relation. For a Bohr energetically level (n=a constant value), one determines now two energetically below levels, which form an electronic layer. The author realizes by this a new atomic model, or a new quantum theory, which explains the existence of electron-clouds without spin.Writing the kinematics energy relation in two modes, classical and Coulombian one determines a relation, from which explicitely the mass of the electron is determined.

  5. A new atomic model

    Energy Technology Data Exchange (ETDEWEB)

    Petrescu, Florian Ion

    2012-07-01

    The movement of an electron around the atomic nucleus has today a great importance in many engineering fields. Electronics, aeronautics, micro and nanotechnology, electrical engineering, optics, lasers, nuclear power, computing, equipment and automation, telecommunications, genetic engineering, bioengineering, special processing, modern welding, robotics, energy and electromagnetic wave field is today only a few of the many applications of electronic engineering. This book presents, shortly, a new and original relation (20 and 20') who determines the radius with that, the electron is running around the nucleus of an atom. One utilizes, two times the Lorenz relation, the Niels Bohr generalized equation, and a mass relation, which was deduced from the kinematics energy relation written in two modes: classical and Coulombian. Equalizing the mass relation with Lorenz relation one obtains a form which is a relation between the squared electron speed (v{sup 2}) and the radius (r). The second relation between v{sup 2} and r was obtained by equalizing the mass of Bohr equation and the mass of Lorenz relation. For a Bohr energetically level (n=a constant value), one determines now two energetically below levels, which form an electronic layer. The author realizes by this a new atomic model, or a new quantum theory, which explains the existence of electron-clouds without spin.Writing the kinematics energy relation in two modes, classical and Coulombian one determines a relation, from which explicitely the mass of the electron is determined.

  6. Karl Popper's Quantum Ghost

    Science.gov (United States)

    Shields, William

    2004-05-01

    Karl Popper, though not trained as a physicist and embarrassed early in his career by a physics error pointed out by Einstein and Bohr, ultimately made substantial contributions to the interpretation of quantum mechanics. As was often the case, Popper initially formulated his position by criticizing the views of others - in this case Niels Bohr and Werner Heisenberg. Underlying Popper's criticism was his belief that, first, the "standard interpretation" of quantum mechanics, sometimes called the Copenhagen interpretation, abandoned scientific realism and second, the assertion that quantum theory was "complete" (an assertion rejected by Einstein among others) amounted to an unfalsifiable claim. Popper insisted that the most basic predictions of quantum mechanics should continue to be tested, with an eye towards falsification rather than mere adding of decimal places to confirmatory experiments. His persistent attacks on the Copenhagen interpretation were aimed not at the uncertainty principle itself and the formalism from which it was derived, but at the acceptance by physicists of an unclear epistemology and ontology that left critical questions unanswered. In 1999, physicists at the University of Maryland conducted a version of Popper's Experiment, re-igniting the debate over quantum predictions and the role of locality in physics.

  7. Physical explanation of the periodic table.

    Science.gov (United States)

    Ostrovsky, V N

    2003-05-01

    The Periodic Table of the elements, the most important generalization in chemistry, is often considered as a representative special case in the study of the relation between chemistry and physics. Its quantum interpretation was initiated, but not completed, by Niels Bohr. In this paper, post-Bohr conceptual developments are discussed from historical and epistemological points of view. The difference between high-precision numerical calculations for individual atoms and the theory of the periodic system as a whole is emphasized. Periodic laws met in Nature are not restricted to the chemical Periodic Table. A comparative study of these laws makes it possible to single out essential features that define the particular pattern of periodicity. It is shown that the periodic system of neutral ground state atoms now has a firm nonempirical quantum-theoretical basis. Alternative approaches, based on group theory and other mathematical schemes, are briefly discussed. It is argued that, while quantum theory is capable of fully accurate calculations for relatively simple atoms or molecular objects, the complexity of polyatomic molecules and chemical reactions guarantees the flourishing of chemistry as a separate scientific discipline.

  8. WA7 - View from downstream

    CERN Multimedia

    1977-01-01

    With this set-up the Annecy (LAPP)-CERN-Copenhagen(Niels Bohr Institute)-Genova-Oslo-University College London Collaboration investigated large-angle elastic scattering of charged mesons and antiprotons on protons, first at 20 and 30 GeV/c, later at 50 GeV/c. The beam H1 (from top) passes two CEDAR counters (centre) before entering the one-metre long liquid hydrogen target, partly inside a magnet of 1.56 T, with a field volume of about 1.50x0.75x1.50 m3. In the foreground one sees on the left the hadron calorimeter of the 'slow' arm; on the right, are scintillation hodoscopes and behind them, a treshold Cerenkov counter of the 'fast' arm.

  9. Simplicity and complexity

    Science.gov (United States)

    Crutchfield, James; Wiesner, Karoline

    2010-02-01

    Is anything ever simple? When confronted with a complicated system, scientists typically strive to identify underlying simplicity, which we articulate as natural laws and fundamental principles. This simplicity is what makes nature appear so organized. Atomic physics, for example, approached a solid theoretical foundation when Niels Bohr uncovered the organization of electronic energy levels, which only later were redescribed as quantum wavefunctions. Charles Darwin's revolutionary idea about the "origin" of species emerged by mapping how species are organized and discovering why they came to be that way. And James Watson and Francis Crick's interpretation of DNA diffraction spectra was a discovery of the structural organization of genetic information - it was neither about the molecule's disorder (thermodynamic entropy) nor about the statistical randomness of its base-pair sequences.

  10. Large boson number IBM calculations and their relationship to the Bohr model

    International Nuclear Information System (INIS)

    Thiamova, G.; Rowe, D.J.

    2009-01-01

    Recently, the SO(5) Clebsch-Gordan (CG) coefficients up to the seniority v max =40 were computed in floating point arithmetic (T.A. Welsh, unpublished (2008)); and, in exact arithmetic, as square roots of rational numbers (M.A. Caprio et al., to be published in Comput. Phys. Commun.). It is shown in this paper that extending the QQQ model calculations set up in the work by D.J. Rowe and G. Thiamova (Nucl. Phys. A 760, 59 (2005)) to N=v max =40 is sufficient to obtain the IBM results converged to its Bohr contraction limit. This will be done by comparing some important matrix elements in both models, by looking at the seniority decomposition of low-lying states and at the behavior of the energy and B(E2) transition strengths ratios with increasing seniority. (orig.)

  11. Can we close the Bohr-Einstein quantum debate?

    Science.gov (United States)

    Kupczynski, Marian

    2017-11-13

    Recent experiments allow one to conclude that Bell-type inequalities are indeed violated; thus, it is important to understand what this means and how we can explain the existence of strong correlations between outcomes of distant measurements. Do we have to announce that Einstein was wrong, Nature is non-local and non-local correlations are produced due to quantum magic and emerge, somehow, from outside space-time? Fortunately, such conclusions are unfounded because, if supplementary parameters describing measuring instruments are correctly incorporated in a theoretical model, then Bell-type inequalities may not be proved. We construct a simple probabilistic model allowing these correlations to be explained in a locally causal way. In our model, measurement outcomes are neither predetermined nor produced in an irreducibly random way. We explain why, contrary to the general belief, the introduction of setting-dependent parameters does not restrict experimenters' freedom of choice. Since the violation of Bell-type inequalities does not allow the conclusion that Nature is non-local and that quantum theory is complete, the Bohr-Einstein quantum debate may not be closed. The continuation of this debate is important not only for a better understanding of Nature but also for various practical applications of quantum phenomena.This article is part of the themed issue 'Second quantum revolution: foundational questions'. © 2017 The Author(s).

  12. Can we close the Bohr-Einstein quantum debate?

    Science.gov (United States)

    Kupczynski, Marian

    2017-10-01

    Recent experiments allow one to conclude that Bell-type inequalities are indeed violated; thus, it is important to understand what this means and how we can explain the existence of strong correlations between outcomes of distant measurements. Do we have to announce that Einstein was wrong, Nature is non-local and non-local correlations are produced due to quantum magic and emerge, somehow, from outside space-time? Fortunately, such conclusions are unfounded because, if supplementary parameters describing measuring instruments are correctly incorporated in a theoretical model, then Bell-type inequalities may not be proved. We construct a simple probabilistic model allowing these correlations to be explained in a locally causal way. In our model, measurement outcomes are neither predetermined nor produced in an irreducibly random way. We explain why, contrary to the general belief, the introduction of setting-dependent parameters does not restrict experimenters' freedom of choice. Since the violation of Bell-type inequalities does not allow the conclusion that Nature is non-local and that quantum theory is complete, the Bohr-Einstein quantum debate may not be closed. The continuation of this debate is important not only for a better understanding of Nature but also for various practical applications of quantum phenomena. This article is part of the themed issue `Second quantum revolution: foundational questions'.

  13. The Compton Radius, the de Broglie Radius, the Planck Constant, and the Bohr Orbits

    Directory of Open Access Journals (Sweden)

    Daywitt W. C.

    2011-04-01

    Full Text Available The Bohr orbits of the hydrogen atom and the Planck constant can be derived classically from the Maxwell equations and the assumption that there is a variation in the electron's velocity about its average value. The resonant nature of the circulating electron and its induced magnetic and Faraday fields prevents a radiative collapse of the electron into the nuclear proton. The derived Planck constant is $h=2pi e^2/alpha c$, where $e$, $alpha$, and $c$ are the electronic charge, the fine structure constant, and the speed of light. The fact that the Planck vacuum (PV theory derives the same Planck constant independently of the above implies that the two derivations are related. The following highlights that connection.

  14. The Compton Radius, the de Broglie Radius, the Planck Constant, and the Bohr Orbits

    Directory of Open Access Journals (Sweden)

    Daywitt W. C.

    2011-04-01

    Full Text Available The Bohr orbits of the hydrogen atom and the Planck constant can be derived classically from the Maxwell equations and the assumption that there is a variation in the electron’s velocity about its average value [1]. The resonant nature of the circulating electron and its induced magnetic and Faraday fields prevents a radiative collapse of the electron into the nuclear proton. The derived Planck constant is h = 2 e 2 = c , where e , , and c are the electronic charge, the fine structure constant, and the speed of light. The fact that the Planck vacuum (PV theory [2] derives the same Planck constant independently of the above implies that the two derivations are related. The following highlights that connection.

  15. Archival Descriptions from the National Archives Catalog

    Data.gov (United States)

    National Archives and Records Administration — Archival Descriptions from the National Archives Catalog data set provides archival descriptions of the permanent holdings of the federal government in the custody...

  16. In the interest of society - The history of Risoe National Laboratory

    International Nuclear Information System (INIS)

    Nielsen, H.; Nielsen, K.; Petersen, F.; Siggaard Jensen, H.

    1998-01-01

    The creation of Risoe forty years ago was one of the largest, single investments in Danish research. The intention was to realise Niels Bohr's visions of the peaceful use in Denmark of nuclear energy for electricity production and other purposes. Risoe decided to take the opportunity of its 40th anniversary in 1998 to have its history written in a form that would contribute to the history of modern Denmark. Four historians of science and technology were asked to carry out this task, and for almost two years they studied records and publications and interviewed present and former staff members of Risoe. The book recounts Risoe's history of the political and administrative level and presents selected and characteristic aspects of the comprehensive research that has been carried out at Risoe. (LN)

  17. John Stewart Bell and twentieth century physics vision and integrity

    CERN Document Server

    Whitaker, Andrew

    2016-01-01

    John Stewart Bell (1928-1990) was one of the most important figures in twentieth-century physics, famous for his work on the fundamental aspects of the century's most important theory, quantum mechanics. While the debate over quantum theory between the supremely famous physicists, Albert Einstein and Niels Bohr, appeared to have become sterile in the 1930s, Bell was able to revive it and to make crucial advances - Bell's Theorem or Bell's Inequalities. He was able to demonstrate a contradiction between quantum theory and essential elements of pre-quantum theory - locality and causality. The book gives a non-mathematical account of Bell's relatively impoverished upbringing in Belfast and his education. It describes his major contributions to quantum theory, but also his important work in the physics of accelerators, and nuclear and elementary particle physics.

  18. Many worlds in one the search for other universes

    CERN Document Server

    Vilenkin, Alexander

    2006-01-01

    Among his peers, Alex Vilenkin is regarded as one of the most imaginative and creative cosmologists of our time. His contributions to our current understanding of the universe include a number of novel ideas, two of which--eternal cosmic inflation and the quantum creation of the universe from nothing--have provided a scientific foundation for the possible existence of multiple universes. With this book--his first for the general reader--Vilenkin joins another select group: the handful of first-rank scientists who are equally adept at explaining their work to nonspecialists. With engaging, well-paced storytelling, a droll sense of humor, and a generous sprinkling of helpful cartoons, he conjures up a bizarre and fascinating new worldview that--to paraphrase Niels Bohr--just might be crazy enough to be true.

  19. Gravity, Special Relativity, and the Strong Force A Bohr-Einstein-de Broglie Model for the Formation of Hadrons

    CERN Document Server

    Vayenas, Constantinos G

    2012-01-01

    This book shows that the strong interaction forces, which keep hadrons and nuclei together, are relativistic gravitational forces exerted between very small particles in the mass range of neutrinos. First, this book considers the problematic motion of two charged particles under the influence of electrostatic and gravitational forces only, which shows that bound states are formed by following the same semi-classical methodology used by Bohr to describe the H atom. This approach is also coupled with Newton's gravitational law and with Einstein's special relativity. The results agree with experi

  20. Bohr model description of the critical point for the first order shape phase transition

    Science.gov (United States)

    Budaca, R.; Buganu, P.; Budaca, A. I.

    2018-01-01

    The critical point of the shape phase transition between spherical and axially deformed nuclei is described by a collective Bohr Hamiltonian with a sextic potential having simultaneous spherical and deformed minima of the same depth. The particular choice of the potential as well as the scaled and decoupled nature of the total Hamiltonian leads to a model with a single free parameter connected to the height of the barrier which separates the two minima. The solutions are found through the diagonalization in a basis of Bessel functions. The basis is optimized for each value of the free parameter by means of a boundary deformation which assures the convergence of the solutions for a fixed basis dimension. Analyzing the spectral properties of the model, as a function of the barrier height, revealed instances with shape coexisting features which are considered for detailed numerical applications.

  1. From Nancy to Copenhagen to the World: The internationalization of Laurent Schwartz and his theory of distributions

    DEFF Research Database (Denmark)

    Barany, Michael J.; Paumier, Anne-Sandrine; Lützen, Jesper

    2017-01-01

    Nancy, via Copenhagen, to the world stage, culminating in his 1950 Fields Medal awarded in Cambridge, Massachusetts. We identify, based on new archival findings, the pivotal role of Danish mathematician Harald Bohr along this trajectory. Our analysis reveals the emerging dynamics of early postwar...

  2. Web archives

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2018-01-01

    This article deals with general web archives and the principles for selection of materials to be preserved. It opens with a brief overview of reasons why general web archives are needed. Section two and three present major, long termed web archive initiatives and discuss the purposes and possible...... values of web archives and asks how to meet unknown future needs, demands and concerns. Section four analyses three main principles in contemporary web archiving strategies, topic centric, domain centric and time-centric archiving strategies and section five discuss how to combine these to provide...... a broad and rich archive. Section six is concerned with inherent limitations and why web archives are always flawed. The last sections deal with the question how web archives may fit into the rapidly expanding, but fragmented landscape of digital repositories taking care of various parts...

  3. Roles of the β 146 histidyl residue in the molecular basis of the Bohr Effect of hemoglobin: A proton nuclear magnetic resonance study

    International Nuclear Information System (INIS)

    Busch, M.R.; Mace, J.E.; Ho, N.T.; Ho, Chien

    1991-01-01

    Assessment of the roles of the carboxyl-terminal β146 histidyl residues in the alkaline Bohr effect in human and normal adult hemoglobin by high-resolution proton nuclear magnetic resonance spectroscopy requires assignment of the resonances corresponding to these residues. By a careful spectroscopic study of human normal adult hemoglobin, enzymatically prepared des(His146β)-hemoglobin, and the mutant hemoglobins Cowtown (β146His → Leu) and York (β146His → Pro), the authors have resolved some of these conflicting results. By a close incremental variation of pH over a wide range in chloride-free 0.1 M N-(2-hydroxyethyl)piperazine-N'-2-ethanesulfonic acid buffer, a single resonance has been found to be consistently missing in the proton nuclear magnetic resonance spectra of these hemoglobin variants. The results indicate that the contribution of the β146 histidyl residues is 0.52 H + /hemoglobin tetramer at pH 7.6, markedly less than 0.8 H + /hemoglobin tetramer estimated by study of the mutant hemoglobin Cowtown (β146His → Leu) by Shih and Perutz. They have found that at least two histidyl residues in the carbonmonoxy form of this mutant have pK values that are perturbed, and they suggest that these pK differences may in part account for this discrepancy. The results show that the pK values of β146 histidyl residues in the carbonmonoxy form of hemoglobin are substantially affected by the presence of chloride and other anions in the solvent, and thus, the contribution of this amino acid residue to the alkaline Bohr effect can be shown to vary widely in magnitude, depending on the solvent composition. These results demonstrate that the detailed molecular mechanisms of the alkaline Bohr effect are not unique but are affected both by the hemoglobin structure and by the interactions with the solvent components in which the hemoglobin molecule resides

  4. Hans H. Ussing - scientific work: contemporary significance and perspectives

    DEFF Research Database (Denmark)

    Larsen, Erik Hviid

    2002-01-01

    As a zoologist, Hans H. Ussing began his scientific career by studying the marine plankton fauna in East Greenland. This brought him in contact with August Krogh at the time George de Hevesy, Niels Bohr and Krogh planned the application of artificial radioactive isotopes for studying the dynamic...... at the cellular level and raised new questions about cellular mechanisms of actions of hormones and drugs. His theoretical treatment of osmotic water fluxes versus fluxes of deuterium labeled water resulted in the discovery of epithelial water channels. His discovery of paracellular transport in frog skin bridged...... studies of high and low resistance epithelia and generalized the description of epithelial transport. He devoted the last decade of his scientific life to solute-coupled water transport. He introduced the sodium recirculation theory of isotonic transport, and in an experimental study, he obtained...

  5. Virtual neutron scattering experiments

    DEFF Research Database (Denmark)

    Overgaard, Julie Hougaard; Bruun, Jesper; May, Michael

    2016-01-01

    We describe how virtual experiments can be utilized in a learning design that prepares students for hands-on experiments at large-scale facilities. We illustrate the design by showing how virtual experiments are used at the Niels Bohr Institute in a master level course on neutron scattering....... In the last week of the course, students travel to a large-scale neutron scattering facility to perform real neutron scattering experiments. Through student interviews and survey answers, we argue, that the virtual training prepares the students to engage more fruitfully with experiments by letting them focus...... on physics and data rather than the overwhelming instrumentation. We argue that this is because they can transfer their virtual experimental experience to the real-life situation. However, we also find that learning is still situated in the sense that only knowledge of particular experiments is transferred...

  6. [The function of analogies in natural sciences, also in contrast to metaphors and models].

    Science.gov (United States)

    Hentschel, Klaus

    2010-01-01

    This introduction surveys the various functions of analogies in science, medicine and technology. The focus is on their heuristic importance. The productiveness of analogies is linked to the systematic depth and breadth of the established connections. Various examples are presented from different periods in the history of science, most notably Galileo; such late-Victorian Maxwellians as George Francis FitzGerald and Oliver Lodge; and Heinrich HERTZ and Niels BOHR. These examples are examined in terms of the specific differing temporal ranges of their claimed validities. They serve as evidence or counterevidence for various systematic analyses of analogies as put forward by various philosophers of science, most notably Francis Bacon, John Stuart Mill, Ernst Mach, Harald Høffding, Ernest Nagel, Mary Hesse and Peter Achinstein. The analytic framework for analogies supported here is what the cognitive scientist Dedre Gentner has termed structure-mapping.

  7. Bohr model description of the critical point for the first order shape phase transition

    Directory of Open Access Journals (Sweden)

    R. Budaca

    2018-01-01

    Full Text Available The critical point of the shape phase transition between spherical and axially deformed nuclei is described by a collective Bohr Hamiltonian with a sextic potential having simultaneous spherical and deformed minima of the same depth. The particular choice of the potential as well as the scaled and decoupled nature of the total Hamiltonian leads to a model with a single free parameter connected to the height of the barrier which separates the two minima. The solutions are found through the diagonalization in a basis of Bessel functions. The basis is optimized for each value of the free parameter by means of a boundary deformation which assures the convergence of the solutions for a fixed basis dimension. Analyzing the spectral properties of the model, as a function of the barrier height, revealed instances with shape coexisting features which are considered for detailed numerical applications.

  8. Unified description of structure and reactions: implementing the nuclear field theory program

    International Nuclear Information System (INIS)

    Broglia, R A; Bortignon, P F; Barranco, F; Vigezzi, E; Idini, A; Potel, G

    2016-01-01

    The modern theory of the atomic nucleus results from the merging of the liquid drop model of Niels Bohr and Fritz Kalckar, and of the shell model of Marie Goeppert Meyer and Hans Jensen. The first model contributed the concepts of collective excitations. The second, those of independent-particle motion. The unification of these apparently contradictory views in terms of the particle-vibration and particle-rotation couplings carried out by Aage Bohr and Ben Mottelson has allowed for an ever more complete, accurate and detailed description of nuclear structure. Nuclear field theory (NFT), developed by the Copenhagen–Buenos Aires collaboration, provided a powerful quantal embodiment of this unification. Reactions are not only at the basis of quantum mechanics (statistical interpretation, Max Born), but also the specific tools to probe the atomic nucleus. It is then natural that NFT is being extended to deal with processes which involve the continuum in an intrinsic fashion, so as to be able to treat them on an equal footing with those associated with bound states (structure). As a result, spectroscopic studies of transfer to continuum states could eventually make use of the NFT rules, properly extended to take care of recoil effects. In the present contribution we review the implementation of the NFT program of structure and reactions, setting special emphasis on open problems and outstanding predictions. (invited comment)

  9. Complementarity and the Nature of Uncertainty Relations in Einstein–Bohr Recoiling Slit Experiment

    Directory of Open Access Journals (Sweden)

    Shogo Tanimura

    2015-07-01

    Full Text Available A model of the Einstein–Bohr recoiling slit experiment is formulated in a fully quantum theoretical setting. In this model, the state and dynamics of a movable wall that has two slits in it, as well as the state of a particle incoming to the two slits, are described by quantum mechanics. Using this model, we analyzed complementarity between exhibiting an interference pattern and distinguishing the particle path. Comparing the Kennard–Robertson type and the Ozawa-type uncertainty relations, we conclude that the uncertainty relation involved in the double-slit experiment is not the Ozawa-type uncertainty relation but the Kennard-type uncertainty relation of the position and the momentum of the double-slit wall. A possible experiment to test the complementarity relation is suggested. It is also argued that various phenomena which occur at the interface of a quantum system and a classical system, including distinguishability, interference, decoherence, quantum eraser, and weak value, can be understood as aspects of entanglement. Quanta 2015; 4: 1–9.

  10. Disarming the gunslinger effect: Reaction beats intention for cooperative actions.

    Science.gov (United States)

    Weller, Lisa; Kunde, Wilfried; Pfister, Roland

    2018-04-01

    According to the famous physicist Niels Bohr, gunfights at high noon in Western movies not only captivate the cinema audience but also provide an accurate illustration of a psychophysical law. He suggested that willed actions come with slower movement execution than reactions, and therefore that a film's hero is able to get the upper hand even though the villain normally draws first. A corresponding "gunslinger effect" has been substantiated by empirical studies. Because these studies used a markedly competitive setting, however, it is currently unclear whether the gunslinger effect indeed reflects structural differences between willed actions and reactive movements, or whether it is a by-product of the competitive setting. To obtain bullet-proof evidence for a true reactive advantage, we investigated willed and reactive movements during a cooperative interaction of two participants. A pronounced reactive advantage emerged, indicating that two independent systems indeed control willed and reactive movements.

  11. Rita Felski, The Limits of Critique

    Directory of Open Access Journals (Sweden)

    Corrado Confalonieri

    2017-05-01

    Full Text Available Professore di Letteratura inglese presso la University of Virginia – e dal 2016 Niels Bohr Professor alla University of Southern Denmark per un progetto quinquennale dedicato agli usi sociali della letteratura –, Rita Felski non è, all’interno del gruppo di studiosi che lavorano negli Stati Uniti, tra quelli più noti al pubblico italiano, e ciò non soltanto perché mancano traduzioni dei suoi libri, ma per il fatto che diversi tra questi sono rivolti a un contesto piuttosto specificamente americano. Non fa eccezione The Limits of Critique, il libro che qui si presenta e che dovrebbe costituire la seconda uscita di una trilogia avviata nel 2008 con Uses of Literature (Wiley-Blackwell e destinata a concludersi con un volume ora in fase di elaborazione dedicato al coinvolgimento estetico e alle ragioni per cui, come lettori o spettatori, siamo affascinati da un’opera d’arte.

  12. Quantum language and the migration of scientific concepts

    CERN Document Server

    Burwell, Jennifer

    2018-01-01

    How highly abstract quantum concepts were represented in language, and how these concepts were later taken up by philosophers, literary critics, and new-age gurus. The principles of quantum physics -- and the strange phenomena they describe -- are represented most precisely in highly abstract algebraic equations. Why, then, did these mathematically driven concepts compel founders of the field, particularly Erwin Schrödinger, Niels Bohr, and Werner Heisenberg, to spend so much time reflecting on ontological, epistemological, and linguistic concerns? What is it about quantum concepts that appeals to latter-day Eastern mystics, poststructuralist critics, and get-rich-quick schemers? How did their interpretations and misinterpretations of quantum phenomena reveal their own priorities? In this book, Jennifer Burwell examines these questions and considers what quantum phenomena -- in the context of the founders' debates over how to describe them -- reveal about the relationship between everyday experience, percep...

  13. Spin dependence of rotational damping by the rotational plane mapping method

    Energy Technology Data Exchange (ETDEWEB)

    Leoni, S; Bracco, A; Million, B [Milan Univ. (Italy). Ist. di Fisica; Herskind, B; Dossing, T; Rasmussen, P [Niels Bohr Inst., Copenhagen (Denmark); Bergstrom, M; Brockstedt, A; Carlsson, H; Ekstrom, P; Nordlund, A; Ryde, H [Lund Univ. (Sweden). Dept. of Physics; Ingebretsen, F; Tjom, P O [Oslo Univ. (Norway); Lonnroth, T [Aabo Akademi, Turku (Finland). Dept. of Physics

    1992-08-01

    In the study of deformed nuclei by gamma spectroscopy, the large quadrupole transition strength known from rotational bands at high excitation energy may be distributed over all final states of a given parity within an interval defined as the rotational damping width {Gamma}{sub rot} The method of rotational plane mapping extracts a value of {Gamma}{sub rot} from the width of valleys in certain planes in the grid plots of triple gamma coincidence data sets. The method was applied to a high spin triple data set on {sup 162,163}Tm taken with NORDBALL at the tandem accelerator of the Niels Bohr Institute, and formed in the reaction {sup 37}Cl + {sup 130}Te. The value {Gamma}{sub rot} = 85 keV was obtained. Generally, experimental values seem to be lower than theoretical predictions, although the only calculation made was for {sup 168}Yb. 6 refs., 3 figs.

  14. The study of the nucleus as a theme in contemporary physics

    International Nuclear Information System (INIS)

    Mottelson, B.R.

    1986-01-01

    Niels Bohr was just eleven years old when Becquerel discovered the first hint of the existence of the atomic nucleus in those faintly glowing ashes from the ancient cosmic fireworks that created the elements of which our solid earth and our living bodies are made; fifteen years later Rutherford was to exploit the natural radioactivity as a marvelous extension of the human sense organs able to resolve the atomic systems into their open, planetary electronic structures surrounding the dense, small, enigmatic atomic nucleus. This report is an attempt to characterize and review the shifting questions and the physical problems that motivated them in the studies that have led to a growing understanding of this unexpected new form of matter occurring in atomic nuclei. The author hopes to be able to indicate how some of these historically important issues have reappeared, transformed, as central issues in current research. (Auth.)

  15. Main - RPSD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... as rice. Data file File name: rpsd_main_sjis.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rpsd/LATEST/r.../ftp.biosciencedbc.jp/archive/rpsd/LATEST/rpsd_main_utf8.zip File size: 120 KB Simple search URL http://togo...nse Update History of This Database Site Policy | Contact Us Main - RPSD | LSDB Archive ...

  16. Protocol - RPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...e version) File URL: ftp://ftp.biosciencedbc.jp/archive/rpd/LATEST/rpd_protocol_jp.zip File size: 535 KB Fil...e name: rpd_protocol_en.zip (English version) File URL: ftp://ftp.biosciencedbc.jp/archiv...tabase Database Description Download License Update History of This Database Site Policy | Contact Us Protocol - RPD | LSDB Archive ...

  17. Archive & Data Management Activities for ISRO Science Archives

    Science.gov (United States)

    Thakkar, Navita; Moorthi, Manthira; Gopala Krishna, Barla; Prashar, Ajay; Srinivasan, T. P.

    2012-07-01

    ISRO has kept a step ahead by extending remote sensing missions to planetary and astronomical exploration. It has started with Chandrayaan-1 and successfully completed the moon imaging during its life time in the orbit. Now, in future ISRO is planning to launch Chandrayaan-2 (next moon mission), Mars Mission and Astronomical mission ASTROSAT. All these missions are characterized by the need to receive process, archive and disseminate the acquired science data to the user community for analysis and scientific use. All these science missions will last for a few months to a few years but the data received are required to be archived, interoperable and requires a seamless access to the user community for the future. ISRO has laid out definite plans to archive these data sets in specified standards and develop relevant access tools to be able to serve the user community. To achieve this goal, a Data Center is set up at Bangalore called Indian Space Science Data Center (ISSDC). This is the custodian of all the data sets of the current and future science missions of ISRO . Chandrayaan-1 is the first among the planetary missions launched/to be launched by ISRO and we had taken the challenge and developed a system for data archival and dissemination of the payload data received. For Chandrayaan-1 the data collected from all the instruments are processed and is archived in the archive layer in the Planetary Data System (PDS 3.0) standards, through the automated pipeline. But the dataset once stored is of no use unless it is made public, which requires a Web-based dissemination system that can be accessible to all the planetary scientists/data users working in this field. Towards this, a Web- based Browse and Dissemination system has been developed, wherein users can register and search for their area of Interest and view the data archived for TMC & HYSI with relevant Browse chips and Metadata of the data. Users can also order the data and get it on their desktop in the PDS

  18. The Self-Organized Archive: SPASE, PDS and Archive Cooperatives

    Science.gov (United States)

    King, T. A.; Hughes, J. S.; Roberts, D. A.; Walker, R. J.; Joy, S. P.

    2005-05-01

    Information systems with high quality metadata enable uses and services which often go beyond the original purpose. There are two types of metadata: annotations which are items that comment on or describe the content of a resource and identification attributes which describe the external properties of the resource itself. For example, annotations may indicate which columns are present in a table of data, whereas an identification attribute would indicate source of the table, such as the observatory, instrument, organization, and data type. When the identification attributes are collected and used as the basis of a search engine, a user can constrain on an attribute, the archive can then self-organize around the constraint, presenting the user with a particular view of the archive. In an archive cooperative where each participating data system or archive may have its own metadata standards, providing a multi-system search engine requires that individual archive metadata be mapped to a broad based standard. To explore how cooperative archives can form a larger self-organized archive we will show how the Space Physics Archive Search and Extract (SPASE) data model will allow different systems to create a cooperative and will use Planetary Data System (PDS) plus existing space physics activities as a demonstration.

  19. Images - RPSD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ta file File name: rpsd_images.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rpsd/LATEST/rpsd_images.zip ... History of This Database Site Policy | Contact Us Images - RPSD | LSDB Archive ...

  20. Main - PLACE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ilable. Data file File name: place_main.zip File URL: ftp://ftp.biosciencedbc.jp/archive/place/LATEST/place_...se Update History of This Database Site Policy | Contact Us Main - PLACE | LSDB Archive ...

  1. Calorimeter Process Variable Archiving

    International Nuclear Information System (INIS)

    Huffman, David

    2002-01-01

    These steps were taken to maintain weekly archives: (1) Friday morning you stop the archiver and wait for it to finish writing data (the lock file will be removed from the directory); (2) move the current archive information to a PC via FTP; (3) remove all previous archive information in the previous directory; (4) move the current archive into the previous directory; (5) start a new archive; (6) burn a CDROM of the archive; and (7) copy the current archive to a specific directory. There are 2 ways to check if the Calorimeter Archiver is running, either through the WEB based front end or directly from a command line. Once the archiver is running it can be monitored from a WEB page. This only works with a browser launched from the online machine running the archiver. Each time the browser is reloaded there should be an update reported in the last write check field. You might have to wait a few minutes to see the update. Calorimetry currently takes readings every (300 sec.) 5 minutes. The second method to verify the archiver is running is to issue a command from a Linux cluster machine.

  2. Analyzing Archival Intelligence: A Collaboration Between Library Instruction and Archives

    Directory of Open Access Journals (Sweden)

    Merinda Kaye Hensley

    2014-07-01

    Full Text Available Although recent archival scholarship promotes the use of primary sources for developing students’ analytical research skills, few studies focus on standards or protocols for teaching or assessing archival instruction. Librarians have designed and tested standards and learning assessment strategies for library instruction and archivists would do well to collaborate with and learn from their experience. This study examines lessons learned from one such collaboration between an instructional services librarian and archivist to evaluate and enhance archival instruction in the University Archives’ Student Life and Culture Archival Program (SLC Archives at the University of Illinois at Urbana-Champaign Library. Based on evaluative data from a student survey and in-depth interviews, the authors offer strategies for meeting and exceeding learning outcomes for archival intelligence more successfully.

  3. Archives and the computer

    CERN Document Server

    Cook, Michael Garnet

    1986-01-01

    Archives and the Computer deals with the use of the computer and its systems and programs in archiving data and other related materials. The book covers topics such as the scope of automated systems in archives; systems for records management, archival description, and retrieval; and machine-readable archives. The selection also features examples of archives from different institutions such as the University of Liverpool, Berkshire County Record Office, and the National Maritime Museum.The text is recommended for archivists who would like to know more about the use of computers in archiving of

  4. Archives and the computer

    CERN Document Server

    Cook, Michael Garnet

    1980-01-01

    Archives and the Computer deals with the use of the computer and its systems and programs in archiving data and other related materials. The book covers topics such as the scope of automated systems in archives; systems for records management, archival description, and retrieval; and machine-readable archives. The book also features examples of systems for records management from different institutions such as theTyne and Wear Archive Department, Dyfed Record Office, and the University of Liverpool. Included in the last part are appendices. Appendix A is a directory of archival systems, Appen

  5. Main - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ntents List of datasets Data file File name: kome_main.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kome...ase Database Description Download License Update History of This Database Site Policy | Contact Us Main - KOME | LSDB Archive ...

  6. Reference - PLACE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ailable. Data file File name: place_reference.zip File URL: ftp://ftp.biosciencedbc.jp/archive/place/LATEST/...ber About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Reference - PLACE | LSDB Archive ...

  7. Horizons of description: Black holes and complementarity

    Science.gov (United States)

    Bokulich, Peter Joshua Martin

    Niels Bohr famously argued that a consistent understanding of quantum mechanics requires a new epistemic framework, which he named complementarity . This position asserts that even in the context of quantum theory, classical concepts must be used to understand and communicate measurement results. The apparent conflict between certain classical descriptions is avoided by recognizing that their application now crucially depends on the measurement context. Recently it has been argued that a new form of complementarity can provide a solution to the so-called information loss paradox. Stephen Hawking argues that the evolution of black holes cannot be described by standard unitary quantum evolution, because such evolution always preserves information, while the evaporation of a black hole will imply that any information that fell into it is irrevocably lost---hence a "paradox." Some researchers in quantum gravity have argued that this paradox can be resolved if one interprets certain seemingly incompatible descriptions of events around black holes as instead being complementary. In this dissertation I assess the extent to which this black hole complementarity can be undergirded by Bohr's account of the limitations of classical concepts. I begin by offering an interpretation of Bohr's complementarity and the role that it plays in his philosophy of quantum theory. After clarifying the nature of classical concepts, I offer an account of the limitations these concepts face, and argue that Bohr's appeal to disturbance is best understood as referring to these conceptual limits. Following preparatory chapters on issues in quantum field theory and black hole mechanics, I offer an analysis of the information loss paradox and various responses to it. I consider the three most prominent accounts of black hole complementarity and argue that they fail to offer sufficient justification for the proposed incompatibility between descriptions. The lesson that emerges from this

  8. Alignment - SAHG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...e URL: ftp://ftp.biosciencedbc.jp/archive/sahg/LATEST/sahg_alignment.zip File size: 12.0 MB Simple search UR...s Database Database Description Download License Update History of This Database Site Policy | Contact Us Alignment - SAHG | LSDB Archive ...

  9. Exon - ASTRA | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ontents Exons in variants Data file File name: astra_exon.zip File URL: ftp://ftp.biosciencedbc.jp/archive/a... About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Exon - ASTRA | LSDB Archive ...

  10. Access to Archives at the National Archives of Namibia ...

    African Journals Online (AJOL)

    This article is based on findings of a study of the National Archives of Namibia conducted in 2015. The study investigated the terms and conditions that guide access at the National Archives of Namibia. The study also investigated how the National Archives of Namibia has conformed to the ICA Code of Ethics and The ...

  11. Locus - ASTRA | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...URL: ftp://ftp.biosciencedbc.jp/archive/astra/LATEST/astra_locus.zip File size: 887 KB Simple search URL htt...icing type (ex. cassette) About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Locus - ASTRA | LSDB Archive ...

  12. Protein - TP Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...p_atlas_protein.zip File URL: ftp://ftp.biosciencedbc.jp/archive/tp_atlas/LATEST/...story of This Database Site Policy | Contact Us Protein - TP Atlas | LSDB Archive ...

  13. HyperArchiver: an EPICS archiver prototype based on Hypertable

    International Nuclear Information System (INIS)

    Giacchini, M.; Giovannini, L.; Montis, M.; Bassato, G.; Vasquez, J.A.; Prete, G.; Andrighetto, A.; Petkus, R.; Lange, R.; Kasemir, K.; Del Campo, M.; Jugo, J.

    2012-01-01

    This work started in the context of NSLS2 project at Brookhaven National Laboratory. The NSLS2 control system foresees a very high number of PV variables and has strict requirements in terms of archiving/retrieving rate: our goal was to store 10 K PV/sec and retrieve 4 K PV/sec for a group of 4 signals. The HyperArchiver is an EPICS Archiver implementation engined by Hypertable, an open source database whose internal architecture is derived from Google's Big Table. We discuss the performance of HyperArchiver and present the results of some comparative tests. (authors)

  14. Solubility - eSOL | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ta file File name: esol.zip File URL: ftp://ftp.biosciencedbc.jp/archive/esol/LAT... License Update History of This Database Site Policy | Contact Us Solubility - eSOL | LSDB Archive ...

  15. Open archive solutions to traditional archive/library cooperation

    Directory of Open Access Journals (Sweden)

    Donatella Castelli

    2003-09-01

    Full Text Available The diffusion of Internet is changing the role of archives and libraries and it is opening a wide range of new possibilities. The new vision is that in few years it will be possible to cross-access multiple libraries, archives, museums, and data repositories. The implementation of this revolutionary vision requires the solution of a number of technical, organizational, sociological, and economical issues. Recently, the proposal of a new, low cost technical solution for open repositories of pre-print material, the Open Archives Initiative Protocol for Metadata Harvesting ( OAI-PMH, has greatly stimulated the discussion about these issues in many application frameworks. This paper overviews the status of this discussion in the library and conventional archives frameworks.

  16. Main - TP Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...me: tp_atlas_en.zip File URL: ftp://ftp.biosciencedbc.jp/archive/tp_atlas/LATEST/...d License Update History of This Database Site Policy | Contact Us Main - TP Atlas | LSDB Archive ...

  17. Main - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... name: at_atlas_en.zip File URL: ftp://ftp.biosciencedbc.jp/archive/at_atlas/LATE... Database Description Download License Update History of This Database Site Policy | Contact Us Main - AT Atlas | LSDB Archive ...

  18. Flat Files - JSNP | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... Data file File name: jsnp_flat_files File URL: ftp://ftp.biosciencedbc.jp/archiv...his Database Database Description Download License Update History of This Database Site Policy | Contact Us Flat Files - JSNP | LSDB Archive ...

  19. OPS index - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...listed. Data file File name: kome_ops_index.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kome/LATEST/kom...e History of This Database Site Policy | Contact Us OPS index - KOME | LSDB Archive ...

  20. Risoe National Laboratory - Forty years of research in a changing society

    International Nuclear Information System (INIS)

    Nielsen, H.; Nielsen, K.; Petersen, F.; Siggaard Jensen, H.

    1998-01-01

    The creation of Risoe forty years ago was one of the largest, single investments in Danish research. The intention was to realise Niels Bohr's visions of the peaceful use in Denmark og nuclear energy for electricity production and other purposes. Risoe decided to take the opportunity of its 40th anniversary in 1998 to have its history written in a form that would contribute to the history of modern Denmark. The result was a book in Danish entitled Til samfundets tarv - Forskningscenter Risoes historie. The present text is a slightly reworked translation of the last chapter of that book. It contains a summary of Risoe's history and some reflections on forty years of change. Change in Danish society at large, in research policy, in energy policy, in technological expectations. Changes at Risoe, in leadership, in organisational structure, in strategy and in fields of research. Some of Risoe's largest projects are briefly characterised. (LN)

  1. Spaziotempo la relatività ristretta

    CERN Document Server

    Sexl, Roman

    1980-01-01

    Invitato a parlare della propria vita per un volume celebrativo del suo settantesimo compleanno, Albert Einstein, sempre restio a ogni forma di pubblicità personale, invece di scrivere della sua esistenza privata scelse di rievocare gli sviluppi del suo pensiero: dalle prime curiosità all'affermarsi della vocazione giovanile, sino al riconoscimento sempre più chiaro delle mete che si prefiggeva. Un'"autobiografia scientifica", insomma, dove più dei fatti contano le rivoluzionarie formulazioni teoriche che hanno impresso una svolta fondamentale alla fisica moderna. A seguire, scienziati eminenti come Wolfgang Pauli, Max Born, Niels Bohr e Kurt Godei discutono l'"autobiografia" di Einstein facendo rivivere la grande disputa tra deterministi e indeterministi, tra la ricerca einsteiniana di una teoria del campo sempre più generale e la concezione opposta, allora sostenuta dalla maggioranza dei fisici. Infine, nella sua incisiva replica finale, Einstein risponde punto su punto ai commentatori e ai critici, di...

  2. CERN Library | Cecilia Jarlskog presents "Portrait of Gunnar Källén: a physics shooting star and poet of early quantum field theory" | 16 September

    CERN Multimedia

    2014-01-01

    Wolfgang Pauli referred to him as 'my discovery', Robert Oppenheimer described him as 'one of the most gifted theorists' and Niels Bohr found him enormously stimulating. Who was the man in question, Gunnar Källén (1926-1968)?   His appearance in the physics sky was like a shooting star. His contributions to the scientific debate caused excitement among young and old. Similar to his friend and mentor, Wolfgang Pauli, he demanded honesty and rigour in physics - a distinct dividing line between fact and speculation. In his obituary, Arthur S. Wightman would write: "Gunnar Källén was a proud continuer of the tradition in quantum field theory established by Wolfgang Pauli. His papers on quantum electrodynamics in the period 1950-1954 carried the non-perturbative approach to quantum electrodynamics forward to a point beyond which very little essential progress has been made up to the present day. At the time I was trying ...

  3. The Hans Tausen drill

    DEFF Research Database (Denmark)

    Johnsen, Sigfus Johann; Dahl-Jensen, Dorthe; Steffensen, Jørgen Peder

    2007-01-01

    In the mid-1990s, excellent results from the GRIP and GISP2 deep drilling projects in Greenland opened up funding for continued ice-coring efforts in Antarctica (EPICA) and Greenland (NorthGRIP). The Glaciology Group of the Niels Bohr Institute, University of Copenhagen, was assigned the task...... of providing drilling capability for these projects, as it had done for the GRIP project. The group decided to further simplify existing deep drill designs for better reliability and ease of handling. The drill design decided upon was successfully tested on Hans Tausen Ice Cap, Peary Land, Greenland, in 1995....... The 5.0 m long Hans Tausen (HT) drill was a prototype for the ~11 m long EPICA and NorthGRIP versions of the drill which were mechanically identical to the HT drill except for a much longer core barrel and chips chamber. These drills could deliver up to 4 m long ice cores after some design improvements...

  4. 2nd Anniversary Symposium of the Institute of Mathematical Sciences Madras, India

    CERN Document Server

    1995-01-01

    The second volume of this series is devoted to the Proceedings of the Second Anniversary Symposium under the chairmanship of the Niels Bohr Visiting Professor of the year - Professor L. Rosenfeld, Deputy Director of NORDIT A, Copenhagen, and the Editor of Nuclear Physics. With particular appropriateness, the Symposium was inaugu­ rated by the Honorable C. Subramaniam, Union Cabinet Minister, the founding father of the Institute. The meeting was characterized by two features: (1) the enlargement of the scope of the discussions in theoretical physics, with the inclusion of many-body problems and statistical mechanics! (2) Seminars on pure mathematics, stimulated by the prdence and participation of Professor Marshall H. Stone of Chicago as the First Ramanujan Visit­ ing Professor at the Institute. The year 1963 marked a new stage in the development of high­ energy physics - the first successes of SU (3) symmetry and the eight­ fold way had such an impact on the scientific world that the hard, unyielding doma...

  5. Table Tennis Club

    CERN Multimedia

    Table Tennis Club

    2013-01-01

    Apparently table tennis plays an important role in physics, not so much because physicists are interested in the theory of table tennis ball scattering, but probably because it provides useful breaks from their deep intellectual occupation. It seems that many of the greatest physicists took table tennis very seriously. For instance, Heisenberg could not even bear to lose a game of table tennis, Otto Frisch played a lot of table tennis, and had a table set up in his library, and Niels Bohr apparently beat everybody at table tennis. Therefore, as the CERN Table Tennis Club advertises on a poster for the next CERN Table Tennis Tournament: “if you want to be a great physicist, perhaps you should play table tennis”. Outdoor table at restaurant n° 1 For this reason, and also as part of the campaign launched by the CERN medical service “Move! & Eat better”, to encourage everyone at CERN to take regular exercise, the CERN Table Tennis Club, with the supp...

  6. Science and anti-science

    CERN Document Server

    Holton, Gerald

    1997-01-01

    What is good science? What goal--if any--is the proper end of scientific activity? Is there a legitimating authority that scientists mayclaim? Howserious athreat are the anti-science movements? These questions have long been debated but, as Gerald Holton points out, every era must offer its own responses. This book examines these questions not in the abstract but shows their historic roots and the answers emerging from the scientific and political controversies of this century. Employing the case-study method and the concept of scientific thematathat he has pioneered, Holton displays the broad scope of his insight into the workings of science: from the influence of Ernst Mach on twentiethcentury physicists, biologists, psychologists, and other thinkers to the rhetorical strategies used in the work of Albert Einstein, Niels Bohr, and others; from the bickering between Thomas Jefferson and the U.S. Congress over the proper form of federal sponsorship of scientific research to philosophical debates since Oswald...

  7. The influence of the grain boundary structure on diffusional creep

    International Nuclear Information System (INIS)

    Thorsen, P.A.

    1998-05-01

    An experiment was carried out to quantify the deformation in the diffusional creep domain. It was found that material had indisputably been deposited at grain boundaries in tension. A characterisation of 131 boundaries in terms of their misorientation was carried out and this was correlated to the observed deformation. Twin boundaries below a certain limit of deviation from an exact twin misorientation were totally inactive in the deformation. A large qualitative difference was found in the way general boundaries take part in the deformation. The experiments have taken place at Materials Research Department, Risoe National Laboratory at Roskilde. The present thesis has been submitted in partial fulfillment of the requirements for the Ph.D. degree in physics at the Niels Bohr Institute, University of Copenhagen. Besides the results of the creep experiment the thesis contains a description of the theoretical background to diffusional creep models. Also, the results from an investigation of helium bubble formation in an irradiated copper sample is included. (au)

  8. Einstein's strugges with quantum theory a reappraisal

    CERN Document Server

    Home, Dipankar

    2007-01-01

    Einstein’s Struggles with Quantum Theory: A Reappraisal by Dipankar Home and Andrew Whitaker provides a detailed account of Albert Einstein’s thinking in regard to quantum physics. Until recently, most of Einstein’s views on quantum physics were dismissed and even ridiculed; some critics even suggested that Einstein was not able to grasp the complexities of the formalism of quantum theory and subtleties of the standard interpretation of this theory known as the Copenhagen interpretation put forward by Niels Bohr and his colleagues. But was that true? Modern scholarship argues otherwise, insist Drs. Home and Whitaker, who painstakingly explain the questions Einstein raised as well as offer a detailed discussion of Einstein’s position and major contributions to quantum theory, connecting them with contemporary studies on fundamental aspects of this theory. This unique book presents a mathematical as well as a non-mathematical route through the theories, controversies, and investigations, making the disc...

  9. Arnold Sommerfeld science, life and turbulent times : 1868-1951

    CERN Document Server

    Eckert, Michael

    2013-01-01

    Arnold Sommerfeld (1868-1951) belongs with Max Planck (1858-1947), Albert Einstein (1879-1955) and Niels Bohr (1885-1962) among the founders of modern theoretical physics, a science that developed into a budding discipline during his lifetime. Sommerfeld witnessed many of the most dramatic scientific, cultural and political events of this era. His correspondence with his family offers a vivid testament to the challenges and joys of a life in science. This biography attempts to reconstruct Sommerfeld’s life and work not only from the perspective of his achievements in theoretical physics but also with the goal of portraying the career of a scientist within the social and political environment in which it evolved. It is based to a large extent on Sommerfeld’s voluminous correspondence, which sheds light both on his private and scientific life. Furthermore, it provides an authentic view on the circumstances that shaped Sommerfeld’s career in different places – Königsberg, Göttingen, Clausthal, Aachen, ...

  10. The Golden Anniversary of the Hahn-Strassmann experiment

    International Nuclear Information System (INIS)

    Fine, L.W.; Herrmann, G.

    1988-01-01

    Nearly fifty years have passed since chemical evidence of fission was first published in the January, 1939 issue of Naturwissenschaften, heralding the beginning of the nuclear age. News had reached America a few days earlier as Niels Bohr arrived in New York and visited with Fermi and others at Columbia. And so began one of the most exciting, dramatic, and profoundly important periods in all of the history of modern science. Although the history of these scientific events has been well-documented, it is appropriate in this Golden Anniversary period to once again record and review them. Making use of (1) the chronology provided by the essential list of publications that followed first publication, (2) eye-witness accounts of the principal participants (as excerpted from live interviews and recording made over the years on audio tapes - including Hahn himself), and (3) available photographic records, the flow of events and the contexts of the times are once again recalled

  11. The Mysteries of the Quantum World

    CERN Multimedia

    2005-01-01

    As part of the World Year of Physics, the Physics Section of the University of Geneva is organising a series of lectures for the uninitiated. Each of the lectures will begin with a demonstration in the auditorium of the detection of cosmic rays and, in collaboration with Professor E. Ellberger of the Conservatoire de Musique de Genève, of how these signals from the farthest reaches of the Universe can be used to create 'cosmic music'. The sixth lecture, entitled 'Einstein's objections to the quantum computer', tackles a mysterious subject, one which Einstein had numerous doubts about. The lecture will be given by Professor Alain Aspect of the Orsay Institute for Optics. In 1935 Einstein discovered a mind-boggling property of quantum mechanics: entanglement, which conflicted with his realist and localised vision of the world. This led him into a heated debate with Niels Bohr. We now know that entangled 'twin photons', even when separated by distances of dozens of kilometres, have this extraordinary proper...

  12. Wave-particle dualism and complementarity unraveled by a different mode.

    Science.gov (United States)

    Menzel, Ralf; Puhlmann, Dirk; Heuer, Axel; Schleich, Wolfgang P

    2012-06-12

    The precise knowledge of one of two complementary experimental outcomes prevents us from obtaining complete information about the other one. This formulation of Niels Bohr's principle of complementarity when applied to the paradigm of wave-particle dualism--that is, to Young's double-slit experiment--implies that the information about the slit through which a quantum particle has passed erases interference. In the present paper we report a double-slit experiment using two photons created by spontaneous parametric down-conversion where we observe interference in the signal photon despite the fact that we have located it in one of the slits due to its entanglement with the idler photon. This surprising aspect of complementarity comes to light by our special choice of the TEM(01) pump mode. According to quantum field theory the signal photon is then in a coherent superposition of two distinct wave vectors giving rise to interference fringes analogous to two mechanical slits.

  13. ALICE gives its first thesis awards

    CERN Multimedia

    2008-01-01

    For the first time the ALICE collaboration has given two of its doctoral students awards for their outstanding theses. Winners Christian Holm Christensen and Zaida Conesa del Valle holding their awards.On 29 October the ALICE collaboration honoured two students for their outstanding theses at a ceremony held at CERN. The two awards, one of which was given for a physics thesis and the other for a technical thesis, went to Zaida Conesa Del Valle (Laboratoire de physique subatomique et des technologies associées) and Christian Holm Christensen (Niels Bohr Institute) respectively. "It is very gratifying to see that the collaboration appreciates our work," said Zaida Conesa del Valle, winner of the physics award for her thesis: Performance of the ALICE Muon Spectrometer. Weak Boson Production and Measurement in Heavy Ion Collisions at the LHC. "I also feel specially thankful to all the people who worked with me," she added. "It was pl...

  14. Quantum Mechanics at the Crossroads New Perspectives from History, Philosophy and Physics

    CERN Document Server

    Evans, James

    2007-01-01

    Quantum mechanics is a beautiful, strange and successful theory that originated in the 1920s. The theory, which Niels Bohr regarded as finished and complete, has in the last few decades rapidly developed in unexpected directions. An intense new focus on the stranger aspects of the theory, including entanglement and nonlocality, has resulted in new perceptions of the foundations of quantum mechanics, as well as surprising new exploitations of quantum phenomena. Historians and philosophers of science have also renewed their attention to quantum mechanics, opening up its human dimensions and asking searching questions about its meaning. This volume brings together new insights from different vantage points: Historians of physics, such as J. L. Heilbron; philosophers of science, such as Abner Shimony and Michel Bitbol; and quantum physicists, such as Wolfgang Ketterle and Roland Omnès, join forces to tackle essential questions in quantum mechanics and its interpretation. All the authors have written for a broad ...

  15. Classical photodissociation dynamics with Bohr quantization: Application to the fragmentation of a van der Waals cluster

    International Nuclear Information System (INIS)

    Arbelo-González, W.; Bonnet, L.; Larrégaray, P.; Rayez, J.-C.; Rubayo-Soneira, J.

    2012-01-01

    Graphical abstract: A recent classical description of photodissociation dynamics in a quantum spirit is applied for the first time to a realistic process, the fragmentation of NeBr 2 . Highlights: ► The photo-dissociation of NeBr 2 is studied by means of two approaches. ► The first is the standard classical one with Gaussian binning. ► The second is a new method applied for the first time to a realistic system. ► The new method leads to exactly the same results as the standard one. ► However, it requires about 10 times less trajectories in the present case. - Abstract: The recent classical dynamical approach of photodissociations with Bohr quantization [L. Bonnet, J. Chem. Phys. 133 (2010) 174108] is applied for the first time to a realistic process, the photofragmentation of the van der Waals cluster NeBr 2 . We illustrate the fact that this approach, formally equivalent to the standard one, may be numerically much more efficient.

  16. Clone - ClEST | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...le URL: ftp://ftp.biosciencedbc.jp/archive/clest/LATEST/clest_clone.zip File size: 660 KB Simple search URL ...ion Download License Update History of This Database Site Policy | Contact Us Clone - ClEST | LSDB Archive ...

  17. Image files - RPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ftp://ftp.biosciencedbc.jp/archive/rpd/LATEST/rpd_gel_image.zip File size: 38.5 MB Simple search URL - Data ... License Update History of This Database Site Policy | Contact Us Image files - RPD | LSDB Archive ...

  18. Protein - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ..._protein.zip File URL: ftp://ftp.biosciencedbc.jp/archive/at_atlas/LATEST/at_atla...About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Protein - AT Atlas | LSDB Archive ...

  19. Cluster - ClEST | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...e File name: clest_cluster.zip File URL: ftp://ftp.biosciencedbc.jp/archive/clest/LATEST/clest_cluster.zip F...ownload License Update History of This Database Site Policy | Contact Us Cluster - ClEST | LSDB Archive ...

  20. Gel table - RPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...d_main.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rpd/LATEST/rpd_main.zip File size: 1 KB Simple searc...iption Download License Update History of This Database Site Policy | Contact Us Gel table - RPD | LSDB Archive ...

  1. tRNA - RMG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...File URL: ftp://ftp.biosciencedbc.jp/archive/rmg/LATEST/rmg_trna.zip File size: 1 KB Simple search URL http:...ption Download License Update History of This Database Site Policy | Contact Us tRNA - RMG | LSDB Archive ...

  2. Enhancers - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...d phase2.0 Data file File name: Enhancers File URL: ftp://ftp.biosciencedbc.jp/archive/fantom...load License Update History of This Database Site Policy | Contact Us Enhancers - FANTOM5 | LSDB Archive ...

  3. All 5' EST - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...n of data contents 5' EST sequences Data file File name: CSV: kome_est_5end_all.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...fasta.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kome/LATEST/kome_est_5end_...se Description Download License Update History of This Database Site Policy | Contact Us All 5' EST - KOME | LSDB Archive ...

  4. All 3' EST - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...n of data contents 3' EST sequences Data file File name: CSV: kome_est_3end_all.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...fasta.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kome/LATEST/kome_est_3end_...se Description Download License Update History of This Database Site Policy | Contact Us All 3' EST - KOME | LSDB Archive ...

  5. About Libraries - AcEST | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ormat text file. Data file File name: acest_library.zip File URL: ftp://ftp.biosciencedbc.jp/archive/acest/L...ATEST/acest_library.zip File size: 2KB Simple search URL http://togodb.biosciencedbc.jp/togodb/view/archiv...s Database Database Description Download License Update History of This Database Site Policy | Contact Us About Libraries - AcEST | LSDB Archive ...

  6. The Dora Lange Archive

    DEFF Research Database (Denmark)

    Holm, Isak Winkel; Bjering, Jens Christian Borrebye

    2016-01-01

    The first season of Nic Pizzolatto's True Detective (2014) is not only a show about a murder, but also a show about how to gather and organize information in an archive. Having identified two archival problems—its temporal and topical extension—the article turns to Jacques Derrida's Archive Fever......: a Freudian Impression in order to explain how the archiving problems of the crime investigation are, in fact, intrinsic to any archiving practice. Lastly, the article addresses the political significance of the show's archiving problems by help of Derrida's text on the American Constitution and of Hardt...

  7. Main data - RMG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ftp://ftp.biosciencedbc.jp/archive/rmg/LATEST/rmg_main.zip File size: 1 KB Simple search URL http://togodb.b... This Database Database Description Download License Update History of This Database Site Policy | Contact Us Main data - RMG | LSDB Archive ...

  8. PREIMS - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Targeted Proteins Research Program (TPRP). Data file File name: at_atlas_preims.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...base Database Description Download License Update History of This Database Site Policy | Contact Us PREIMS - AT Atlas | LSDB Archive ...

  9. EST data - RED | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...st.zip File URL: ftp://ftp.biosciencedbc.jp/archive/red/LATEST/red_est.zip File size: 629 KB Simple search U...ase Database Description Download License Update History of This Database Site Policy | Contact Us EST data - RED | LSDB Archive ...

  10. ORF information - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... File URL: ftp://ftp.biosciencedbc.jp/archive/kome/LATEST/kome_orf_infomation.zip File size: 526 KB Simple s...ut This Database Database Description Download License Update History of This Database Site Policy | Contact Us ORF information - KOME | LSDB Archive ...

  11. Mapping data - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...tional Rice Genome Sequencing Project (IRGSP) Data file File name: kome_mapping_data.zip File URL: ftp://ftp.biosciencedbc.jp/archiv...(Transcriptional Unit) About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Mapping data - KOME | LSDB Archive ...

  12. Spot table - RPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...d_spot.zip File URL: ftp://ftp.biosciencedbc.jp/archive/rpd/LATEST/rpd_spot.zip F... cDNA. (multiple entries) About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Spot table - RPD | LSDB Archive ...

  13. Archival standards, in archival open access software And offer appropriate software for internal archival centers

    Directory of Open Access Journals (Sweden)

    Abdolreza Izadi

    2016-12-01

    Full Text Available The purpose of this study is Study of Descriptive Metadata Standards in Archival open source software, to determine the most appropriate descriptive metadata standard (s and also Encoder Software support of these standards. The approach of present study is combination and library methods, Delphi and descriptive survey are used. Data gathering in library study is fiche, in the Delphi method is questionnaire and in descriptive survey is checklist. Statistical population contains 5 Archival open source software. The findings suggest that 5 metadata standards, consist of EAD, ISAD, EAC-CPF, ISAAR & ISDF, diagnosed appropriate by Delphi Panel members as the most appropriate descriptive metadata standards to use for archival software. Moreover, ICA-ATOM and Archivist toolkit in terms of support for standards that were suitable, diagnosed as the most appropriate archival software.

  14. ToE in a nutshell or reconciliation of Bohr and Einstein

    Energy Technology Data Exchange (ETDEWEB)

    Kaesser, Juergen

    2016-07-01

    Unification of particle and gravitational physics is today's major challenge. This book describes a comprehensive theory able to accomplish it. Starting with a few basic assumptions it allows deducting so different features as e.g. the forces, the six quarks, particle mass etc. of the Standard Model or light deflection, perihelion rotation, Shapiro effect, red shift etc. of General Relativity. Furthermore among others it gives answers to open questions like GUT, Dark Mass and eventually Dark Energy, justifies why the behavior of elementary particles in a gravitational field complies with the Schroedinger equation or why the radii of the planets in our solar system are as they are. Einstein and Bohr fiercely struggled for an understanding of quantum physics. Their different perspectives seem to be irreconcilable. Because of the overwhelming success of quantum physics the dissent unsettling the foundation of physics was never resolved. Doing it, as it is tried in this book, comprehensibility for physical processes is regained. Paradoxes like Schroedinger's Cat vanish into thin air. A theory of unification cannot be simple as it has to contain the known physics. Moreover it has to overcome their contradictions as in defining space-time or in postulating separability. Advantage of the here presented approach compared to M-theory or Loop Quantum Gravitation is its ability to deduct observable features. Of course open questions remain being answered requiring the computational effort of actual theories if not even much more. But these items do not define the basic message of the theory but the derivation of specifics.

  15. VLBA Archive &Distribution Architecture

    Science.gov (United States)

    Wells, D. C.

    1994-01-01

    Signals from the 10 antennas of NRAO's VLBA [Very Long Baseline Array] are processed by a Correlator. The complex fringe visibilities produced by the Correlator are archived on magnetic cartridges using a low-cost architecture which is capable of scaling and evolving. Archive files are copied to magnetic media to be distributed to users in FITS format, using the BINTABLE extension. Archive files are labelled using SQL INSERT statements, in order to bind the DBMS-based archive catalog to the archive media.

  16. (reprocessed)CAGE peaks - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...g38/mm10). Data file File name: (reprocessed)CAGE_peaks (Homo sapiens) File URL: ftp://ftp.biosciencedbc.jp/archive/fantom...)CAGE_peaks (Mus musculus) File URL: ftp://ftp.biosciencedbc.jp/archive/fantom5/d...his Database Site Policy | Contact Us (reprocessed)CAGE peaks - FANTOM5 | LSDB Archive ...

  17. (reprocessed)pooled_ctss - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...e: (reprocessed)pooled_ctss (Homo sapiens) File URL: ftp://ftp.biosciencedbc.jp/archive/fantom5/datafiles/re...) File URL: ftp://ftp.biosciencedbc.jp/archive/fantom5/datafiles/reprocessed/mm10...ory of This Database Site Policy | Contact Us (reprocessed)pooled_ctss - FANTOM5 | LSDB Archive ...

  18. License - PSCDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...wnload License Update History of This Database Site Policy | Contact Us License - PSCDB | LSDB Archive ...

  19. Download - RPSD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Download License Update History of This Database Site Policy | Contact Us Download - RPSD | LSDB Archive ...

  20. License - DMPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ownload License Update History of This Database Site Policy | Contact Us License - DMPD | LSDB Archive ...

  1. Disease - MicrobeDB.jp | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...File name: disease.tar.gz File URL: ftp://ftp.biosciencedbc.jp/archive/microbedb/...iption Download License Update History of This Database Site Policy | Contact Us Disease - MicrobeDB.jp | LSDB Archive ...

  2. Effectiveness of an Asynchronous Online Module on University Students' Understanding of the Bohr Model of the Hydrogen Atom

    Science.gov (United States)

    Farina, William J.; Bodzin, Alec M.

    2017-12-01

    Web-based learning is a growing field in education, yet empirical research into the design of high quality Web-based university science instruction is scarce. A one-week asynchronous online module on the Bohr Model of the atom was developed and implemented guided by the knowledge integration framework. The unit design aligned with three identified metaprinciples of science learning: making science accessible, making thinking visible, and promoting autonomy. Students in an introductory chemistry course at a large east coast university completed either an online module or traditional classroom instruction. Data from 99 students were analyzed and results showed significant knowledge growth in both online and traditional formats. For the online learning group, findings revealed positive student perceptions of their learning experiences, highly positive feedback for online science learning, and an interest amongst students to learn chemistry within an online environment.

  3. PSCID List - PSCDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...t.zip File URL: ftp://ftp.biosciencedbc.jp/archive/pscdb/LATEST/pscdb_pscid_list.zip File size: 24.4 KB Simp...nd-binding sites About This Database Database Description Download License Update History of This Database Site Policy | Contact Us PSCID List - PSCDB | LSDB Archive ...

  4. Download - SSBD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ion Download License Update History of This Database Site Policy | Contact Us Download - SSBD | LSDB Archive ...

  5. Archives: Mathematics Connection

    African Journals Online (AJOL)

    Items 1 - 9 of 9 ... Archives: Mathematics Connection. Journal Home > Archives: Mathematics Connection. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 9 of 9 Items. 2011 ...

  6. Download - DGBY | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...base Description Download License Update History of This Database Site Policy | Contact Us Download - DGBY | LSDB Archive ...

  7. Download - SAHG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Database Description Download License Update History of This Database Site Policy | Contact Us Download - SAHG | LSDB Archive ...

  8. Download - Metabolonote | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... Database Description Download License Update History of This Database Site Policy | Contact Us Download - Metabolonote | LSDB Archive ...

  9. License - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...e Database Description Download License Update History of This Database Site Policy | Contact Us License - GRIPDB | LSDB Archive ...

  10. License - GETDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...se Database Description Download License Update History of This Database Site Policy | Contact Us License - GETDB | LSDB Archive ...

  11. Archives: Philosophical Papers

    African Journals Online (AJOL)

    Items 1 - 26 of 26 ... Archives: Philosophical Papers. Journal Home > Archives: Philosophical Papers. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 26 of 26 Items. 2008. Vol 37 ...

  12. Archives: Kenya Veterinarian

    African Journals Online (AJOL)

    Items 1 - 21 of 21 ... Archives: Kenya Veterinarian. Journal Home > Archives: Kenya Veterinarian. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 21 of 21 Items. 2014. Vol 38, No ...

  13. Archives: Agronomie Africaine

    African Journals Online (AJOL)

    Items 1 - 50 of 55 ... Archives: Agronomie Africaine. Journal Home > Archives: Agronomie Africaine. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 55 Items, 1 2 > >>. 2017 ...

  14. A Critical Archival Pedagogy: The Lesbian Herstory Archives and a Course in Radical Lesbian Thought

    Directory of Open Access Journals (Sweden)

    Kailah R. Carden

    2016-07-01

    Full Text Available This paper is the story of a critical archival pedagogy that emerged through the undergraduate course Radical Lesbian Thought. As teachers and students, we dialogically co-constructed the praxis and content of the course throughout the semester. We employed archives throughout the course as theory, site, and pedagogy. In this paper we identify three archival frameworks: dialogue and difference, collaborative knowledge production, and archival methodology; and detail how they informed three course activities: reading and writing archival letters, visiting the Lesbian Herstory Archives, and completing final archival projects. We argue that archives provide theoretical and practical opportunities, in the tradition of critical pedagogy, to challenge and rearrange powered classroom structures and practices of thought.

  15. Fission via compound states and JπK A. Bohr's channels: what we can learn from recent studies with slow neutrons

    Directory of Open Access Journals (Sweden)

    Furman W.I.

    2012-02-01

    Full Text Available Last data on angular correlations of fission fragments from slow (s-wave neutron induced binary fission of spin-aligned nuclei 235U are discussed in the context of JπK A. Bohrs channels. Special attention is paid to K = 0 channel. Reasons for its suppression are specified for compound nucleus states of negative parity. A brief overview of recent data on T-odd angular correlations in ternary and binary (with emission of a third particle, a neutron or γ-quantum fission induced by slow polarized neutrons is presented. On the basis of the developed theoretical approach it is shown that a valuable information on JπK fission channels at scission point can be inferred from these T-odd angular correlations.

  16. License - JSNP | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - JSNP | LSDB Archive ...

  17. Download - ASTRA | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...is Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - ASTRA | LSDB Archive ...

  18. Archives: Water SA

    African Journals Online (AJOL)

    Items 1 - 50 of 71 ... Archives: Water SA. Journal Home > Archives: Water SA. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 71 Items, 1 2 > >>. 2018. Vol 44, No 1 (2018) ...

  19. License - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...out This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - KOME | LSDB Archive ...

  20. Download - RED | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...t This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - RED | LSDB Archive ...

  1. Download - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...t This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - GRIPDB | LSDB Archive ...

  2. License - RMOS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...out This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - RMOS | LSDB Archive ...

  3. CAGE peaks - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...E Data file File name: CAGE_peaks File URL: ftp://ftp.biosciencedbc.jp/archive/fantom... This Database Database Description Download License Update History of This Database Site Policy | Contact Us CAGE peaks - FANTOM5 | LSDB Archive ...

  4. License - ASTRA | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - ASTRA | LSDB Archive ...

  5. License - SSBD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...thout notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - SSBD | LSDB Archive ...

  6. Download - PSCDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...cess [here]. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - PSCDB | LSDB Archive ...

  7. License - SAHG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ut notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - SAHG | LSDB Archive ...

  8. License - RPSD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...thout notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - RPSD | LSDB Archive ...

  9. Private political archives

    Directory of Open Access Journals (Sweden)

    Waldemar Chorążyczewski

    2010-12-01

    Full Text Available "Private political archives" are understood by me as all acts collected intently by a private person. These acts are connected with the person's participation in political life and gathered in order to be used in public activity as the source of argumentation and information about factors and mechanisms of political processes. Private political archives of the first half of the XVI century were mainly created by royal servants, often with reference to their job duties. These duties could inspire to collect political acts for private purposes. During the reign of Sigismund Augustus, archives of gentry activists were developed to small extent and they mainly focused on parliamentary life. Private political archives were created outside the executionist movement, namely in the community gathered around the royal court. After 1572, Crown and Lithuanian magnates greatly influenced the creation of political archives. Archives of lesser gentry, scarce and poor, did not disappear completely. However, they became difficult for identification. Therefore, developmental process concerned exclusively documentary "treasure troves" created by magnates. They had the financial means and possibilities to create truly valuable political archives. The same as in the previous period the dynamisms of executionist movement was reflected in political archival documentation, now the creation of patronage system and clientele, or traditionally understood magnate oligarchy, (depending on the point of view corresponded best to archives development. The heritage of previous generations was the treasure trove of patterns and solutions. However, this trove was used selectively, on one hand giving up patterns and rights that were uncomfortable, and, on the other, giving the value of precedence to unexpected acts that gained more importance or even new content in changed political conditions. The application of interpretation principle raised interest in old acts and patterns

  10. BRC - MicrobeDB.jp | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...table). Data file File name: brc.tar.gz File URL: ftp://ftp.biosciencedbc.jp/archive/microbedb/LATEST/brc.ta...rains in JCM. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us BRC - MicrobeDB.jp | LSDB Archive ...

  11. SRA - MicrobeDB.jp | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...e following table). Data file File name: sra.tar.gz File URL: ftp://ftp.biosciencedbc.jp/archive/microbedb/L...t This Database Database Description Download License Update History of This Database Site Policy | Contact Us SRA - MicrobeDB.jp | LSDB Archive ...

  12. Archives: ORiON

    African Journals Online (AJOL)

    Items 1 - 27 of 27 ... Archives: ORiON. Journal Home > Archives: ORiON. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 27 of 27 Items. 2017. Vol 33, No 2 (2017) · Vol 33, No 1 ...

  13. Download - RPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data .... If it is, access [here]. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - RPD | LSDB Archive ...

  14. License - RED | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ts might be changed without notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - RED | LSDB Archive ...

  15. Download - JSNP | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data .... If it is, access [here]. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - JSNP | LSDB Archive ...

  16. Movie collection - TogoTV | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...ols. Data file File name: movie File URL: ftp://ftp.biosciencedbc.jp/archive/togotv/movie/ File size: 200 GB...ata entries 1169 entries - About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Movie collection - TogoTV | LSDB Archive ...

  17. License - GenLibi | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...nse Update History of This Database Site Policy | Contact Us License - GenLibi | LSDB Archive ...

  18. License - ClEST | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...License Update History of This Database Site Policy | Contact Us License - ClEST | LSDB Archive ...

  19. The ERASMUS experiment archive

    Science.gov (United States)

    Isakeit, Dieter; Sabbatini, Massimo; Carey, William

    2005-08-01

    The Erasmus Experiment Archive is an electronic database, accessible through the Internet, that collects in a single reference repository scientific, technical and operational information regarding the experiments performed in the experiment facilities which fall under the responsibility of the ESA Directorate of Human Spaceflight, Microgravity and Exploration. The archive is operated, filled with content and kept up-to-date by the Erasmus User Centre. which forms part of the Directorate. The archive shares its records and is interoperable with similar experiment archives of the partner agencies NASA USA) and JAXA (Japan) through a mutually agreed standard for experiment records called the International Distributed Experiment Archive (IDEA).

  20. Body weight - Open TG-GATEs | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...le URL: ftp://ftp.biosciencedbc.jp/archive/open-tggates/LATEST/open_tggates_body_...atabase Description Download License Update History of This Database Site Policy | Contact Us Body weight - Open TG-GATEs | LSDB Archive ...

  1. (reprocessed)CAGE_peaks_annotation - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...: ftp://ftp.biosciencedbc.jp/archive/fantom5/datafiles/reprocessed/hg38_latest/extra/CAGE_peaks_annotation/ ...e URL: ftp://ftp.biosciencedbc.jp/archive/fantom5/datafiles/reprocessed/mm10_latest/extra/CAGE_peaks_annotat...te History of This Database Site Policy | Contact Us (reprocessed)CAGE_peaks_annotation - FANTOM5 | LSDB Archive ...

  2. (reprocessed)CAGE_peaks_expression - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...sciencedbc.jp/archive/fantom5/datafiles/reprocessed/hg38_latest/extra/CAGE_peaks_expression/ File size: 3.3 ...tp.biosciencedbc.jp/archive/fantom5/datafiles/reprocessed/mm10_latest/extra/CAGE_peaks_expression/ File size...f This Database Site Policy | Contact Us (reprocessed)CAGE_peaks_expression - FANTOM5 | LSDB Archive ...

  3. Download - fRNAdb | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Download License Update History of This Database Site Policy | Contact Us Download - fRNAdb | LSDB Archive ...

  4. Download - TogoTV | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... Download License Update History of This Database Site Policy | Contact Us Download - TogoTV | LSDB Archive ...

  5. The CORDEX archive in ESGF: a global archive for regional data

    Science.gov (United States)

    Juckes, Martin; Lautenschlager, Michael; Legutke, Stephanie; Bøssing Christensen, Ole; Kolax, Michael; Denvil, Sébastien

    2013-04-01

    The CORDEX program will produce regional model simulations for all areas of the globe, run by many modelling centres but with a consistent set of experimental parameters. Following the example set with the Coupled Model Inter-comparison Project, Phase 5 (CMIP5) archive of global climate simulations, a federated archive infrastructure will be exploited to support efficient distribution of the data and provide a single catalogue with a flexible search interface. Initial work towards establishing the European component of federated archive for CORDEX using the Earth System Grid Federation (ESGF) software has been started in the FP7 project IS-ENES (InfraStructure for the European Network for Earth System Modelling http://is.enes.org) and will be continued under IS-ENES2 (with additional support for an archive node at the University of Cape Town, S. Africa). The ESGF system allows data held at multiple sites to be accessed by users in a transparent manner. This poster will describe key adaptations of the ESGF CMIP5 infrastructure for CORDEX and some of the data services the system will provide. The vocabularies which underpin the facets of the search interface have been adapted and extended, a strategy for quality control has been developed. For the CMIP5 archive, most modelling centres contributing data also deployed an ESGF archive node. For the CORDEX archive a different approach will be followed because data is expected from a larger number of contributors without the resources needed to run such software. Instead, the CORDEX federated archive will be hosted at a moderate number of institutions with the required resources and expertise.

  6. License - dbQSNP | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...escription Download License Update History of This Database Site Policy | Contact Us License - dbQSNP | LSDB Archive ...

  7. License - eSOL | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...iption Download License Update History of This Database Site Policy | Contact Us License - eSOL | LSDB Archive ...

  8. Review: Niels C. Taubert (2006. Produktive Anarchie? Netzwerke freier Softwareentwicklung [Productive Anarchy? Networks of Open Source Software Development

    Directory of Open Access Journals (Sweden)

    Matthias Groß

    2007-01-01

    Full Text Available Open source software is software designed to allow anyone to use and make changes in the software. This practice often renders the product superior to more centralized models such as those used in commercial software companies. How is such a phenomenon possible in a time where nothing seems to be acquirable save by purchase? Niels C. TAUBERT's book Productive Anarchy? Networks of Open Source Software Development aims at a sociological understanding of the prerequisites and conditions for the success of open source software. One of the conclusions of TAUBERT's book is that the process of open software development needs to be understood as adaptive and experimental. A continuous feedback between the context of production and the context of application is the basis for robust and successful software production. One of the surprising results of the book is that the most important requirement for this feedback process is a set of norms—neutrality, communism, disinterestedness, and universalism—norms that Robert MERTON associated with academic science in the 1940s. If TAUBERT is right that these norms are to be found outside the world of institutional science in open source software development projects today, then his case study can be seen as an indicator for a new form of knowledge production in the 21st century, where the social relevance and responsibility of a research process are keys to successful innovation. With this book, which deserves a wide readership, TAUBERT makes an important contribution to our understanding of the successful organization of technology development. URN: urn:nbn:de:0114-fqs0701109

  9. Archiving Websites

    DEFF Research Database (Denmark)

    Brügger, Niels

    This book treats the micro archiving of websites, i.e. archiving by researchers, students or others without special technical knowledge who, using a standard computer, wish to save a website for further study. The phenomenon is discussed from the standpoint that Internet research must be able...

  10. List of Participants

    Science.gov (United States)

    2008-11-01

    Davide CassaniLaboratoire de Physique Théorique, École Normale Supérieure, Paris Alejandra CastroUniversity of Michigan Claudio Caviezel Max-Planck-Institut für Physik, München Alessio Celi Universitat de Barcelona Anna Ceresole Istituto Nazionale di Fisica Nucleare, Università di Torino Athanasios ChatzistavrakidisNational Technical University of Athens Wissam ChemissanyCentre for Theoretical Physics, University of Groningen Eugen-Mihaita CioroianuUniversity of Craiova Andres CollinucciTechnische Universität Wien Paul CookUniversità di Roma, Tor Vergata Lorenzo CornalbaUniversità di Milano-Bicocca Aldo CotroneKatholieke Universiteit Leuven Ben Craps Vrije Universiteit, Brussel Stefano Cremonesi SISSA, Trieste Riccardo D'AuriaPolitecnico di Torino Gianguido Dall'AgataUniversity of Padova Jose A de AzcarragaUniversidad de Valencia Jan de BoerInstituut voor Theoretische Fysica, Universiteit van Amsterdam Sophie de BuylInstitut des Hautes Études Scientifiques, Bures-sur-Yvette Marius de LeeuwUtrecht University Frederik De RooVrije Universiteit, Brussel Jan De Rydt Katholieke Universiteit Leuven and CERN, Geneva Bernard de WitInstitute for Theoretical Physics, Utrecht University Stephane DetournayIstituto Nazionale di Fisica Nucleare, Sezione di Milano Paolo Di Vecchia Niels Bohr Institute, København Eugen DiaconuUniversity of Craiova Vladimir Dobrev Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia Nick DoreyUniversity of Cambridge Hajar Ebrahim NajafabadiIPM, Tehran Federico Elmetti Università di Milano Oleg Evnin Vrije Universiteit, Brussel Francesco Fiamberti Università di Milano Davide Forcella SISSA, Trieste and CERN, Geneva Valentina Forini Humboldt-Universität zu Berlin Angelos Fotopoulos Università di Torino Denis Frank Université de Neuchâtel Marialuisa Frau Università di Torino Matthias Gaberdiel Eidgenössische Technische Hochschule (ETH), Zürich Diego Gallego SISSA/ISAS, Trieste Maria Pilar Garcia del

  11. Download - eSOL | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Database Description Download License Update History of This Database Site Policy | Contact Us Download - eSOL | LSDB Archive ...

  12. (Per)Forming Archival Research Methodologies

    Science.gov (United States)

    Gaillet, Lynee Lewis

    2012-01-01

    This article raises multiple issues associated with archival research methodologies and methods. Based on a survey of recent scholarship and interviews with experienced archival researchers, this overview of the current status of archival research both complicates traditional conceptions of archival investigation and encourages scholars to adopt…

  13. Einstein's Revolutionary Light-Quantum Hypothesis

    Science.gov (United States)

    Stuewer, Roger H.

    2005-05-01

    The paper in which Albert Einstein proposed his light-quantum hypothesis was the only one of his great papers of 1905 that he himself termed ``revolutionary.'' Contrary to widespread belief, Einstein did not propose his light-quantum hypothesis ``to explain the photoelectric effect.'' Instead, he based his argument for light quanta on the statistical interpretation of the second law of thermodynamics, with the photoelectric effect being only one of three phenomena that he offered as possible experimental support for it. I will discuss Einstein's light-quantum hypothesis of 1905 and his introduction of the wave-particle duality in 1909 and then turn to the reception of his work on light quanta by his contemporaries. We will examine the reasons that prominent physicists advanced to reject Einstein's light-quantum hypothesis in succeeding years. Those physicists included Robert A. Millikan, even though he provided convincing experimental proof of the validity of Einstein's equation of the photoelectric effect in 1915. The turning point came after Arthur Holly Compton discovered the Compton effect in late 1922, but even then Compton's discovery was contested both on experimental and on theoretical grounds. Niels Bohr, in particular, had never accepted the reality of light quanta and now, in 1924, proposed a theory, the Bohr-Kramers-Slater theory, which assumed that energy and momentum were conserved only statistically in microscopic interactions. Only after that theory was disproved experimentally in 1925 was Einstein's revolutionary light-quantum hypothesis generally accepted by physicists---a full two decades after Einstein had proposed it.

  14. CAGE_peaks_annotation - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...file File name: CAGE_peaks_annotation File URL: ftp://ftp.biosciencedbc.jp/archive/fantom...on Download License Update History of This Database Site Policy | Contact Us CAGE_peaks_annotation - FANTOM5 | LSDB Archive ...

  15. pSort search result - KOME | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...name: kome_psort_search_result.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kome/LATEST/kome_psort_searc...abase Description Download License Update History of This Database Site Policy | Contact Us pSort search result - KOME | LSDB Archive ...

  16. Transnational archives: the Canadian case

    Directory of Open Access Journals (Sweden)

    Julia Creet

    2011-05-01

    Full Text Available This paper is a brief overview of the concept of the transnational archive as a counterpoint to the idea that a national archive is necessarily a locus of a static idea of nation. The Canadian national archives is used as a case study of an archives that was transnational in its inception, and one that has continued to change in its mandate and materials as a response to patterns in migration and changing notions of multiculturalism as a Canadian federal policy. It introduces the most recent formation of the transnational archive and its denizens: the genealogical archive inhabited by family historians.

  17. Analysis list - ChIP-Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...://ftp.biosciencedbc.jp/archive/chip-atlas/LATEST/chip_atlas_analysis_list.zip File size: 44.8 KB Simple sea...e class. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Analysis list - ChIP-Atlas | LSDB Archive ...

  18. ArchiveDB—Scientific and technical data archive for Wendelstein 7-X

    International Nuclear Information System (INIS)

    Hennig, Christine; Maier, Josef; Grün, Martin; Krom, Jon; Blum, Torsten; Grahl, Michael; Heimann, Peter; Riemann, Heike; Laqua, Heike; Lewerentz, Marc; Spring, Anett; Werner, Andreas

    2016-01-01

    Highlights: • ArchiveDB archives all scientific and technical data of Wendelstein. • Primary index is the measured absolute time. • Continuously arising data is chunked in time for storage. • The Big Data Lambda Architecture pattern is applied. • The system is in place since a decade and a major change of underlying technology has been mastered. - Abstract: ArchiveDB is the data archive for all scientific and technical data collected at the Wendelstein 7-X project. It is a distributed system allowing continuous data archival. ArchiveDB has demanding requirements regarding performance efficiency (storage performance of 30 GB/s during experiments, expected storage amount of 1.4 PB/year), reliability (availability of 364 days/year), maintainability (testability) and portability (including change of hardware and software). Data acquisition with continuous operation and high time resolutions (up to nanoseconds scale) for physics data is supported as well as long-term recording up to 24 h/7 days for operational data (∼1 Hz rate). Moreover, all results of data analysis are stored in the archive. Another challenge, uniform retrieval of measured and analyzed data, allowing time and structure information as selection criteria, is mastered as well. The key concepts of data storage and retrieval are: (1) partitioning of incoming data in groups and stream, (2) chunking of data in boxes of manageable size covering a finite time period, and (3) indexing of data using absolute time as ordering and indexing criteria. Continuous operation of the ArchiveDB software and hardware for various systems and components relevant to Wendelstein 7-X has been done successfully for several years, thus, showing that the key requirements are satisfied. The overall data amount so far has reached 7 Terabyte over 9 years of data taking. Round-the-clock operation of the archive is in place since 5 years. Initial plasma operation OP1.1 of Wendelstein 7-X has been supported with no downtime

  19. ArchiveDB—Scientific and technical data archive for Wendelstein 7-X

    Energy Technology Data Exchange (ETDEWEB)

    Hennig, Christine, E-mail: Christine.Hennig@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Maier, Josef, E-mail: Josef.Maier@ipp.mpg.de [Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching (Germany); Grün, Martin, E-mail: Martin.Gruen@ipp.mpg.de [FERCHAU Engineering GmbH, Steinmüllerallee 2, 51643 Gummersbach (Germany); Krom, Jon, E-mail: Jon.Krom@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Blum, Torsten, E-mail: Torsten.Bluhm@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Grahl, Michael, E-mail: Michael.Grahl@ipp.mpg.dem [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Heimann, Peter, E-mail: Peter.Heimann@ipp.mpg.de [Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching (Germany); Riemann, Heike, E-mail: Heike.Riemann@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Laqua, Heike, E-mail: Heike.Laqua@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Lewerentz, Marc, E-mail: Marc.Lewerentz@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Spring, Anett, E-mail: Anett.Spring@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany); Werner, Andreas, E-mail: Andreas.Werner@ipp.mpg.de [Max Planck Institute for Plasma Physics, Wendelsteinstraße 1, 17491 Greifswald (Germany)

    2016-11-15

    Highlights: • ArchiveDB archives all scientific and technical data of Wendelstein. • Primary index is the measured absolute time. • Continuously arising data is chunked in time for storage. • The Big Data Lambda Architecture pattern is applied. • The system is in place since a decade and a major change of underlying technology has been mastered. - Abstract: ArchiveDB is the data archive for all scientific and technical data collected at the Wendelstein 7-X project. It is a distributed system allowing continuous data archival. ArchiveDB has demanding requirements regarding performance efficiency (storage performance of 30 GB/s during experiments, expected storage amount of 1.4 PB/year), reliability (availability of 364 days/year), maintainability (testability) and portability (including change of hardware and software). Data acquisition with continuous operation and high time resolutions (up to nanoseconds scale) for physics data is supported as well as long-term recording up to 24 h/7 days for operational data (∼1 Hz rate). Moreover, all results of data analysis are stored in the archive. Another challenge, uniform retrieval of measured and analyzed data, allowing time and structure information as selection criteria, is mastered as well. The key concepts of data storage and retrieval are: (1) partitioning of incoming data in groups and stream, (2) chunking of data in boxes of manageable size covering a finite time period, and (3) indexing of data using absolute time as ordering and indexing criteria. Continuous operation of the ArchiveDB software and hardware for various systems and components relevant to Wendelstein 7-X has been done successfully for several years, thus, showing that the key requirements are satisfied. The overall data amount so far has reached 7 Terabyte over 9 years of data taking. Round-the-clock operation of the archive is in place since 5 years. Initial plasma operation OP1.1 of Wendelstein 7-X has been supported with no downtime

  20. License - Q-TARO | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...thout notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - Q-TARO | LSDB Archive ...

  1. Download - GenLibi | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...access [here]. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - GenLibi | LSDB Archive ...

  2. GPCR Interaction - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us GRI...ed information (disease etc.). Data file File name: gripdb_main.zip File URL: ftp://ftp.biosciencedbc.jp/archive/gripdb/LATEST/gri...godb.biosciencedbc.jp/togodb/view/gripdb_main#en Data acquisition method PDB, Refseq Data analysis method - ...Number of data entries 409 entries Data item Description GRIP ID Interaction ID Main Title Interaction title...tabase Database Description Download License Update History of This Database Site Policy | Contact Us GPCR Interaction - GRIPDB | LSDB Archive ...

  3. License - RGP gmap | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...nged without notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - RGP gmap | LSDB Archive ...

  4. Download - Plabrain DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us Plabrain...s Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - Plabrain DB | LSDB Archive ...

  5. National Archives Catalog and API

    Data.gov (United States)

    National Archives and Records Administration — The National Archives Catalog is the online catalog of NARA's nationwide holdings in the Washington, DC area, Regional Archives, and Presidential Libraries.

  6. Lessons learned from planetary science archiving

    Science.gov (United States)

    Zender, J.; Grayzeck, E.

    2006-01-01

    The need for scientific archiving of past, current, and future planetary scientific missions, laboratory data, and modeling efforts is indisputable. To quote from a message by G. Santayama carved over the entrance of the US Archive in Washington DC “Those who can not remember the past are doomed to repeat it.” The design, implementation, maintenance, and validation of planetary science archives are however disputed by the involved parties. The inclusion of the archives into the scientific heritage is problematic. For example, there is the imbalance between space agency requirements and institutional and national interests. The disparity of long-term archive requirements and immediate data analysis requests are significant. The discrepancy between the space missions archive budget and the effort required to design and build the data archive is large. An imbalance exists between new instrument development and existing, well-proven archive standards. The authors present their view on the problems and risk areas in the archiving concepts based on their experience acquired within NASA’s Planetary Data System (PDS) and ESA’s Planetary Science Archive (PSA). Individual risks and potential problem areas are discussed based on a model derived from a system analysis done upfront. The major risk for a planetary mission science archive is seen in the combination of minimal involvement by Mission Scientists and inadequate funding. The authors outline how the risks can be reduced. The paper ends with the authors view on future planetary archive implementations including the archive interoperability aspect.

  7. Resources for the User's Guide to the Royal Hetman's Archives in archives and library collections

    Directory of Open Access Journals (Sweden)

    Krzysztof Syta

    2012-12-01

    Full Text Available This article is an overview of archival collections with provenance of hetman's archives, but physically separated into collections in archives and libraries across Poland (Kraków, Kórnik, Łódź, Poznań, Warszawa and also Ukraine (Kiev, Lviv. Research, which later became an inspiration for this overview, has been conducted mainly in the early 90s. In the light of the above, this article does not claim to be called a "guide" to the royalhetmans' archives of the sixteenth through to the eighteenth century, but it could be viewed as an outline of such archival finding aid. This overview focuses on characteristics of different types of archival material, which author considered integrally connected to holding of an office of hetman, i.e.: personal, administrative and military, judiciary, financial, and also correspondence. Qualification criteria may raise some concerns, because selection of archives is subjective by nature, but also because in the discussed time period there was social consensus on the fact that one's private life and public sphere would overlap. Most of the archival materials used in this study comes from the hetman's archives of the eighteenth century (Jan Clement Branicki's; Franciszek Ksawery Branicki's; Stanisław Mateusz, Wacław, Seweryn Rzewuski's and Adam Mikołaj Sieniawski's. Eighteen century is considered to be the peak of development of private archives, which - without a doubt - had great impact on the preservation of hetman's archives of that period. Moreover, the fact that there is significantly larger collection of hetman's archives of that period, compared to previous two centuries, is the result of the hetman's office having a special place within the political system of the Polish-Lithuanian Commonwealth.

  8. License - fRNAdb | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...be changed without notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - fRNAdb | LSDB Archive ...

  9. License - AT Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... might be changed without notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - AT Atlas | LSDB Archive ...

  10. License - TP Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ... might be changed without notice. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - TP Atlas | LSDB Archive ...

  11. Archives: Ethiopian Veterinary Journal

    African Journals Online (AJOL)

    Items 1 - 16 of 16 ... Archives: Ethiopian Veterinary Journal. Journal Home > Archives: Ethiopian Veterinary Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 16 of 16 Items ...

  12. Archives: Nigerian Veterinary Journal

    African Journals Online (AJOL)

    Items 1 - 49 of 49 ... Archives: Nigerian Veterinary Journal. Journal Home > Archives: Nigerian Veterinary Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 49 of 49 Items ...

  13. Archives: Continuing Medical Education

    African Journals Online (AJOL)

    Items 51 - 88 of 88 ... Archives: Continuing Medical Education. Journal Home > Archives: Continuing Medical Education. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 51 - 88 of 88 ...

  14. Archives: African Studies Monographs

    African Journals Online (AJOL)

    Archives: African Studies Monographs. Journal Home > Archives: African Studies Monographs. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 5 of 5 Items. 2007. Vol 8 (2007) ...

  15. Theoretical currents of Archival Science

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Ávila Araújo

    2013-08-01

    Full Text Available Archival Science was formed, as a scientific discipline, in the late nineteenth century, from the consolidation of a custody and heritage model. In the twentieth century, several theories have been developed, systematized in this article in four axes. As a result, Archival Science has expanded its scope of studies. As a result of this expansion, there are contemporary perspectives with systemic models, covering different types of archives, concerned with the sociocultural context of the archives, and also insering digital technologies in the practice of archives.

  16. GPCR Mutation information - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us GRI...s and exposed in molecular surface. Data file File name: gripdb_mutation_info.zip File URL: ftp://ftp.biosciencedbc.jp/archive/gri...pdb/LATEST/gripdb_mutation_info.zip File size: 766 bytes Si...mple search URL http://togodb.biosciencedbc.jp/togodb/view/gripdb_mutation_info#en Data acquisition method P... Site Policy | Contact Us GPCR Mutation information - GRIPDB | LSDB Archive ...

  17. Archives: Malawi Medical Journal

    African Journals Online (AJOL)

    Items 1 - 50 of 72 ... Archives: Malawi Medical Journal. Journal Home > Archives: Malawi Medical Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 72 Items, 1 2 > >> ...

  18. Archives: African Health Sciences

    African Journals Online (AJOL)

    Items 1 - 50 of 67 ... Archives: African Health Sciences. Journal Home > Archives: African Health Sciences. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 67 Items, 1 2 > >> ...

  19. Archives: Health SA Gesondheid

    African Journals Online (AJOL)

    Items 1 - 42 of 42 ... Archives: Health SA Gesondheid. Journal Home > Archives: Health SA Gesondheid. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 42 of 42 Items. 2018 ...

  20. Download - Open TG-GATEs | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...Download License Update History of This Database Site Policy | Contact Us Download - Open TG-GATEs | LSDB Archive ...

  1. FTP archives for physics

    International Nuclear Information System (INIS)

    Trunec, D.; Brablec, A.; Kapicka, V.

    1995-01-01

    We have established archives for programs, data, papers etc. in physics (mainly for plasma physics). The archives are located at computer ftp.muni.cz in the directory pub/muni.cz/physics. These archives can be reached by anonymous FTP or by gopher server gopher.muni.cz (147.251.4.33). At the present time, programs for PC, cross sections for electrons, swarm parameters and rate constants stored are in the archives. We would like to collect the programs for calculations in physics (mainly for PC). We suppose that each program should have a testing example and some description. We would also like to collect physical constants and experimental or theoretical data (e.g. cross sections, swarm parameters and rate constants), which are important for other calculation or for comparison with the results of others studies. Interested scholars are invited to sent us their programs, data, preprints and reports for these archives. All files in the archives are in public domain and can be obtained using computer network Internet

  2. Download - tRNADB-CE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us tRNAD...f This Database Site Policy | Contact Us Download - tRNADB-CE | LSDB Archive ...

  3. Archives: Mizan Law Review

    African Journals Online (AJOL)

    Items 1 - 21 of 21 ... Archives: Mizan Law Review. Journal Home > Archives: Mizan Law Review. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 21 of 21 Items. 2017. Vol 11, No 2 ...

  4. Update History of This Database - dbQSNP | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us dbQSNP Update History of This Database Date Update contents 2017/02/16 dbQSNP English archiv...e Description Download License Update History of This Database Site Policy | Contact Us Update History of This Database - dbQSNP | LSDB Archive ... ...e site is opened. 2002/10/23 dbQSNP (http://qsnp.gen.kyushu-u.ac.jp/) is opened. About This Database Databas

  5. Fermilab History and Archives Project | Home

    Science.gov (United States)

    Special Events Early Users Meetings (1979 - 1989) The Tevatron Natural History Discoveries Technology Site Fermilab History and Archives Project Fermilab History and Archives Project Fermi National Accelerator Laboratory Home About the Archives History & Archives Online Request Contact Us Site Index

  6. Update History of This Database - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available CAGE TSS aggregation 」 「 CAGE peaks 」 2015/12/07 FANTOM5 archive site is opened. (Archive V1) 2014/03/27 FANTOM5 ( http://fantom...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...5 Update History of This Database Date Update contents 2017/03/14 FANTOM5 English arch...escription Download License Update History of This Database Site Policy | Contact Us Update History of This Database - FANTOM5 | LSDB Archive ...

  7. Data archiving in experimental physics

    International Nuclear Information System (INIS)

    Dalesio, L.R.; Watson, W. III; Bickley, M.; Clausen, M.

    1998-01-01

    In experimental physics, data is archived from a wide variety of sources and used for a wide variety of purposes. In each of these environments, trade-offs are made between data storage rate, data availability, and retrieval rate. This paper presents archive alternatives in EPICS, the overall archiver design and details on the data collection and retrieval requirements, performance studies, design choices, design alternatives, and measurements made on the beta version of the archiver

  8. Update History of This Database - DMPD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us DMPD Update History of This Database Date Update contents 2010/03/29 DMPD English archive si....jp/macrophage/ ) is released. About This Database Database Description Download License Update History of Thi...s Database Site Policy | Contact Us Update History of This Database - DMPD | LSDB Archive ...

  9. The influence of the grain boundary structure on diffusional creep

    Energy Technology Data Exchange (ETDEWEB)

    Thorsen, P.A

    1998-05-01

    An experiment was carried out to quantify the deformation in the diffusional creep domain. It was found that material had indisputably been deposited at grain boundaries in tension. A characterisation of 131 boundaries in terms of their misorientation was carried out and this was correlated to the observed deformation. Twin boundaries below a certain limit of deviation from an exact twin misorientation were totally inactive in the deformation. A large qualitative difference was found in the way general boundaries take part in the deformation. The experiments have taken place at Materials Research Department, Risoe National Laboratory at Roskilde. The present thesis has been submitted in partial fulfillment of the requirements for the Ph.D. degree in physics at the Niels Bohr Institute, University of Copenhagen. Besides the results of the creep experiment the thesis contains a description of the theoretical background to diffusional creep models. Also, the results from an investigation of helium bubble formation in an irradiated copper sample is included. (au) 7 tabs., 56 ills., 75 refs.

  10. Golden Jubilee photos

    CERN Multimedia

    2003-01-01

    Events, activities and celebrations are being organised in all the Member States as CERN prepares for its fiftieth anniversary next year. A detailed programme of the festivities will be available in early 2004. In the meantime, the Weekly Bulletin and the special Fiftieth Anniversary Website are launching a series of photographs recounting the Laboratory's fifty-year history. A different event will be commemorated each week. The series begins with one of the first Council sessions. The origins of CERN Dress code has evolved somewhat since this third session of the provisional CERN Council in October 1952, and Niels Bohr's pipe would no longer be permitted; but the spirit that drives the Member State delegates, namely promoting leading-edge basic science in Europe, will be much the same as ever when the 126th Council session takes place at the end of this week. While CERN was officially created on 29th September 1954 following the ratification of its Convention by France and Germany, its origins go back to ...

  11. Kyushu University Tandem Accelerator Laboratory report, 1988-1990

    International Nuclear Information System (INIS)

    Sagara, Kenshi; Morinobu, Shunpei

    1991-03-01

    Ten years have elapsed since the first beam was obtained from the Kyushu University tandem accelerator. Although the laboratory has achieved successful scientific results, the performance of the accelerator has been on a decline mainly due to the aging. In the last two and a half years, the tandem accelerator has suffered from the fall of terminal voltage to around 8 MV. However, the experimental studies in the laboratory have been active. The utilization of the polarized beams of protons and deuterons to study the scattering of the p+d system, the use of heavy ion beam for the systematic search for the molecular resonance in relatively heavy systems and for the study on reaction mechanism, the use of both light and heavy ion beams for the studies on nuclear engineering, material science and geological science and so on were carried out. The gamma ray spectroscopic study on the state near yrast line was largely hampered by the accelerator troubles, instead, the collaboration with the Niels Bohr Institute provided a wonderful research ground for the studies. (K.I.)

  12. Arnold Sommerfeld. Atomic physicist and messenger of culture 1868-1951. A biography

    International Nuclear Information System (INIS)

    Eckert, Michael

    2013-01-01

    Arnold Sommerfeld is beside Albert Einstein, Niels Bohr, and Max Planck one of the founders of modern atomic and quantum theory. His career began in the 1890th years at the University of Goettingen, the world center of mathematics of that time. Since 1906 he created on the professorship for theoretical physics at the Munich university one of the most important schools of science, the students of which are well-known theorists of the atomic era like as the Nobel-price winners Hans Bethe, Peter Debye, Wolfgang Pauli, and Werner Heisenberg. He also developed far beyond his subject an unprecedented impact. He travelled as ''messenger of culture'' in many countries in order to advertise in the years after the first world war for the reputation of Germany as culture nation. By the nationalsocialism the Munich ''nursery of theoretical physics'' however was prepared an inglorious end, because Sommerfeld counted for a ''main propagandist of Jewish theories''. By the example of this life of a physicist also the eventful history of a whole subject.

  13. Significance of international hydropower storages for the German energy turnaround; Bedeutung der internationalen Wasserkraftspeicherung fuer die deutsche Energiewende

    Energy Technology Data Exchange (ETDEWEB)

    Hobohm, Jens; Ess, Florian [Prognos AG, Berlin (Germany)

    2013-01-15

    Prediction is very difficult, especially if it's about the future. This witticism, which has been alternatively ascribed to Mark Twain, Karl Valentin, Niels Bohr and Winston Churchill, could hardly be truer than when applied to the wind and sun, especially in the case of long-term forecasts. Wind power and photovoltaic plant capacities are what needs to grow most if renewable energies really are to cover 80% of Germany's energy supply by the year 2050. Other renewable energy resources do not have the potential to contribute substantially to achieving the goals proclaimed by the German federal government. Some 64% of electricity production and 70% of installed power capacity will be coming from the wind and sun in the year 2050, according to recent calculations. A study prepared by Prognos AG on behalf of the German National Committee of the World Energy Council has investigated the question as to what extent international hydropower storages are capable of taking up surplus electricity and holding it available as a power reserve.

  14. John Wheeler, 1933 - 1959: Particles and Weapons

    Science.gov (United States)

    Ford, Kenneth

    2009-05-01

    During the early part of his career, John Archibald Wheeler made an astonishing number of contributions to nuclear and particle physics, as well as to classical electrodynamics, often in collaboration with another physicist. He was also a major contributor to the Manhattan Project (in Chicago and Hanford rather than Los Alamos), and, following World War II, became an influential scientific cold warrior. His early achievements in physics include the calculated scattering of light by light (with Gregory Breit), the prediction of nuclear rotational states (with Edward Teller), the theory of fission (with Niels Bohr), action-at-a-distance electrodynamics (with Richard Feynman), the theory of positronium, the universal weak interaction (with Jayme Tiomno), and the proposed use of the muon as a nuclear probe particle. He gained modest fame as the person who identified xenon 135 as a reactor poison. His Project Matterhorn contributed significantly to the design of the H bomb, and his Project 137, which he had hoped would flower into a major defense lab, served as the precursor to the Jason group.

  15. Portrait of Gunnar Källén a physics shooting star and poet of early quantum field theory

    CERN Document Server

    2014-01-01

    Wolfgang Pauli referred to him as 'my discovery,' Robert Oppenheimer described him as 'one of the most gifted theorists' and Niels Bohr found him enormously stimulating. Who was the man in question, Gunnar Källén (1926-1968)? His appearance in the physics sky was like a shooting star. His contributions to the scientific debate caused excitement among young and old. Similar to his friend and mentor, Wolfgang Pauli, he demanded honesty and rigor in physics - a distinct dividing line between fact and speculation. In his obituary, Arthur S. Wightman would write: 'Gunnar Källén was a proud continuer of the tradition in quantum field theory established by Wolfgang Pauli. His papers on quantum electrodynamics in the period 1950-1954 carried the non-perturbative approach to quantum electrodynamics forward to a point beyond which very little essential progress has been made up to the present day. At the time I was trying to puzzle out the grammar of the language of quantum field theory, and here was Källén al...

  16. Sakharov Prize Talk: Creativity of Physicists in the Struggle for Human Rights

    Science.gov (United States)

    Altshuler, Boris

    2014-03-01

    USSR was a totalitarian State with an almighty secret service - KGB. To save the repressed victim of regime, let it be dissident or scientists - Jewish refuzenik, was seemingly an absolutely impossible task. ``For success of our hopeless adventure!'', - as Andrei Sakharov used to say. There were no natural checks and balances in the Former USSR and there none in modern Russia - that is why the task to save the child in Russia is not less `hopeless' today. But the key word in Sakharov's motto is `success' - and we managed to reach it earlier in cooperation with the world scientific community, and we manage to reach it now in our work of protecting of rights of children. The Know How is creativity. To achieve something absolutely impossible needs unexpected `crazy' ideas (`it's not crazy enough to be true', - Niels Bohr). The same in science, in physics in particular, the Step to Unknown always demands `crazy' creative ideas. The Talk traces the parallels between creativity in physics and in human rights struggle. I acknowledge the support from the Committee of Concerned Scientists.

  17. Quantum mechanics at the crossroads. New perspectives from history, philosophy and physics

    International Nuclear Information System (INIS)

    Evans, J.; Thorndike, A.S.

    2007-01-01

    Quantum mechanics is a beautiful, strange and successful theory that originated in the 1920s. The theory, which Niels Bohr regarded as finished and complete, has in the last few decades rapidly developed in unexpected directions. An intense new focus on the stranger aspects of the theory, including entanglement and nonlocality, has resulted in new perceptions of the foundations of quantum mechanics, as well as surprising new exploitations of quantum phenomena. Historians and philosophers of science have also renewed their attention to quantum mechanics, opening up its human dimensions and asking searching questions about its meaning. This volume brings together new insights from different vantage points: Historians of physics, such as J. L. Heilbron; philosophers of science, such as Abner Shimony and Michel Bitbol; and quantum physicists, such as Wolfgang Ketterle and Roland Omncs, join forces to tackle essential questions in quantum mechanics and its interpretation. All the authors have written for a broad readership, and the resulting volume will appeal to everyone wishing to keep abreast of new developments in quantum mechanics, as well as its history and philosophy. (orig.)

  18. Heurs et malheurs de la physique quantique des vérités incroyables

    CERN Document Server

    Pharabod, Jean-Pierre

    2017-01-01

    La mécanique quantique est l’un des domaines de la physique les plus surprenants et controversés. Depuis le début, elle a suscité les plus vifs débats quant à sa signification et à son lien avec le réel. L’atomisme, la lumière ou les théories relativistes ont aussi défrayé la chronique, mais rien ne semble devoir arrêter les polémiques qui entourent l’interprétation des phénomènes quantiques. De Heisenberg à Schrödinger en passant par la fameuse controverse entre Einstein et Niels Bohr, Jean-Pierre Pharabod et Gérard Klein n’omettent aucune péripétie de cette saga de la physique quantique qui mène aujourd’hui à l’affirmation pour le moins surprenante de la « non-localité » de la nature. C’est un nouveau défi à nos modes de pensée ordinaires.

  19. Ethics and Truth in Archival Research

    Science.gov (United States)

    Tesar, Marek

    2015-01-01

    The complexities of the ethics and truth in archival research are often unrecognised or invisible in educational research. This paper complicates the process of collecting data in the archives, as it problematises notions of ethics and truth in the archives. The archival research took place in the former Czechoslovakia and its turbulent political…

  20. Update History of This Database - SAHG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us SAHG Update History of This Database Date Update contents 2016/05/09 SAHG English archive si...te is opened. 2009/10 SAHG ( http://bird.cbrc.jp/sahg ) is opened. About This Database Database Description ...Download License Update History of This Database Site Policy | Contact Us Update History of This Database - SAHG | LSDB Archive ...

  1. Update History of This Database - RMOS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us RMOS Update History of This Database Date Update contents 2015/10/27 RMOS English archive si...12 RMOS (http://cdna01.dna.affrc.go.jp/RMOS/) is opened. About This Database Database Description Download License Update Hi...story of This Database Site Policy | Contact Us Update History of This Database - RMOS | LSDB Archive ...

  2. A MySQL Based EPICS Archiver

    International Nuclear Information System (INIS)

    Slominski, Christopher

    2009-01-01

    Archiving a large fraction of the EPICS signals within the Jefferson Lab (JLAB) Accelerator control system is vital for postmortem and real-time analysis of the accelerator performance. This analysis is performed on a daily basis by scientists, operators, engineers, technicians, and software developers. Archiving poses unique challenges due to the magnitude of the control system. A MySQL Archiving system (Mya) was developed to scale to the needs of the control system; currently archiving 58,000 EPICS variables, updating at a rate of 11,000 events per second. In addition to the large collection rate, retrieval of the archived data must also be fast and robust. Archived data retrieval clients obtain data at a rate over 100,000 data points per second. Managing the data in a relational database provides a number of benefits. This paper describes an archiving solution that uses an open source database and standard off the shelf hardware to reach high performance archiving needs. Mya has been in production at Jefferson Lab since February of 2007.

  3. A MySQL Based EPICS Archiver

    Energy Technology Data Exchange (ETDEWEB)

    Christopher Slominski

    2009-10-01

    Archiving a large fraction of the EPICS signals within the Jefferson Lab (JLAB) Accelerator control system is vital for postmortem and real-time analysis of the accelerator performance. This analysis is performed on a daily basis by scientists, operators, engineers, technicians, and software developers. Archiving poses unique challenges due to the magnitude of the control system. A MySQL Archiving system (Mya) was developed to scale to the needs of the control system; currently archiving 58,000 EPICS variables, updating at a rate of 11,000 events per second. In addition to the large collection rate, retrieval of the archived data must also be fast and robust. Archived data retrieval clients obtain data at a rate over 100,000 data points per second. Managing the data in a relational database provides a number of benefits. This paper describes an archiving solution that uses an open source database and standard off the shelf hardware to reach high performance archiving needs. Mya has been in production at Jefferson Lab since February of 2007.

  4. License - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM....0 International . If you use data from this database, please be sure attribute this database as follows: FANTOM...se Database Description Download License Update History of This Database Site Policy | Contact Us License - FANTOM5 | LSDB Archive ...

  5. License - Trypanosomes Database | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us Trypanoso... Attribution-Share Alike 2.1 Japan . If you use data from this database, please be sure attribute this database as follows: Trypanoso...nse Update History of This Database Site Policy | Contact Us License - Trypanosomes Database | LSDB Archive ...

  6. Online Archives

    Directory of Open Access Journals (Sweden)

    Julian D. Richards

    2004-01-01

    Full Text Available Online archives are of increasing importance in Archaeological Informatics, but like any new genre they prompt a number of questions. What is their relationship to publication? What should go in them? How should they be delivered and indexed? Can they be preserved? Whilst their delivery requires technology, we must also consider how that technology should best be employed in the service of our discipline. This article attempts to address some of these questions but it need not be read from start to finish. The links from this summary provide one fairly linear route through the text but each section is self-contained and can also be accessed directly from the Contents page. The problems posed by effective publication of archaeological fieldwork have exercised the profession for many decades. The issues raised go to the core of discussion of whether preservation by record is a valid concept, and indeed whether archaeological data exist. There are different schools of thought about the relationship between publication and archiving, but hopefully we can accept that data are recorded observations but still agree that they have a re-use value for re-examination and re-interpretation. Since the 1960s archaeology has experienced a publication crisis point. The scenario is familiar. Excavation is destruction; it is an unrepeatable experiment and the archaeologist has a professional obligation to make a full and accessible record of his/her observations. Yet full publication is increasingly expensive and difficult, and excavation monographs are read by few people, and bought by even fewer. In England the development of post-PPG16 fieldwork has exacerbated the problem by creating a mountain of unpublished grey literature and making the work of synthesis even harder; a similar situation exists in other countries. Meanwhile museum archives are also reaching breaking point; most are running out of storage space, few can provide facilities for access, and

  7. Update History of This Database - SSBD | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us SSBD Update History of This Database Date Update contents 2016/07/25 SSBD English archive si...tion Download License Update History of This Database Site Policy | Contact Us Update History of This Database - SSBD | LSDB Archive ... ...te is opened. 2013/09/03 SSBD ( http://ssbd.qbic.riken.jp/ ) is opened. About This Database Database Descrip

  8. The Comparison Study of Six University Archives

    Directory of Open Access Journals (Sweden)

    Chun-Fen Liu

    2004-03-01

    Full Text Available The university archives is not only the extension of a building, but also includes the archival records, archivists and equipments. The university archives is the historical memory of a university, which could let people to predict the future by reviewing the past. The university archives has abundant collections, both teachers and students can review history of this university. This paper mainly compares six university archives of Taiwan, and the interviewing method is used in this research. After comparison of the six university archives, we have found the six university archives have different organizational structures, budgets, and functions. Finally the authors propose some suggestions.[Article content in Chinese

  9. Archives Library Information Center

    Data.gov (United States)

    National Archives and Records Administration — ALIC is an online library catalog of books, periodicals, and other materials contained in Archives I and II and book collections located in other facilities.

  10. The Ethics of Archival Research

    Science.gov (United States)

    McKee, Heidi A.; Porter, James E.

    2012-01-01

    What are the key ethical issues involved in conducting archival research? Based on examination of cases and interviews with leading archival researchers in composition, this article discusses several ethical questions and offers a heuristic to guide ethical decision making. Key to this process is recognizing the person-ness of archival materials.…

  11. GRIP Database original data - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us GRI...PDB GRIP Database original data Data detail Data name GRIP Database original data DOI 10....18908/lsdba.nbdc01665-006 Description of data contents GRIP Database original data It consists of data table...s and sequences. Data file File name: gripdb_original_data.zip File URL: ftp://ftp.biosciencedbc.jp/archive/gripdb/LATEST/gri...e Database Description Download License Update History of This Database Site Policy | Contact Us GRIP Database original data - GRIPDB | LSDB Archive ...

  12. Dynamic Data Management Based on Archival Process Integration at the Centre for Environmental Data Archival

    Science.gov (United States)

    Conway, Esther; Waterfall, Alison; Pepler, Sam; Newey, Charles

    2015-04-01

    In this paper we decribe a business process modelling approach to the integration of exisiting archival activities. We provide a high level overview of existing practice and discuss how procedures can be extended and supported through the description of preservation state. The aim of which is to faciliate the dynamic controlled management of scientific data through its lifecycle. The main types of archival processes considered are: • Management processes that govern the operation of an archive. These management processes include archival governance (preservation state management, selection of archival candidates and strategic management) . • Operational processes that constitute the core activities of the archive which maintain the value of research assets. These operational processes are the acquisition, ingestion, deletion, generation of metadata and preservation actvities, • Supporting processes, which include planning, risk analysis and monitoring of the community/preservation environment. We then proceed by describing the feasability testing of extended risk management and planning procedures which integrate current practices. This was done through the CEDA Archival Format Audit which inspected British Atmospherics Data Centre and National Earth Observation Data Centre Archival holdings. These holdings are extensive, comprising of around 2PB of data and 137 million individual files which were analysed and characterised in terms of format based risk. We are then able to present an overview of the risk burden faced by a large scale archive attempting to maintain the usability of heterogeneous environmental data sets. We conclude by presenting a dynamic data management information model that is capable of describing the preservation state of archival holdings throughout the data lifecycle. We provide discussion of the following core model entities and their relationships: • Aspirational entities, which include Data Entity definitions and their associated

  13. Archives: Medical Journal of Zambia

    African Journals Online (AJOL)

    Items 1 - 39 of 39 ... Archives: Medical Journal of Zambia. Journal Home > Archives: Medical Journal of Zambia. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 39 of 39 Items ...

  14. Archives: Annals of Pediatric Surgery

    African Journals Online (AJOL)

    Items 1 - 32 of 32 ... Archives: Annals of Pediatric Surgery. Journal Home > Archives: Annals of Pediatric Surgery. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 32 of 32 Items ...

  15. Archives: Town and Regional Planning

    African Journals Online (AJOL)

    Items 1 - 12 of 12 ... Archives: Town and Regional Planning. Journal Home > Archives: Town and Regional Planning. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 12 of 12 ...

  16. Archives: Egyptian Journal of Biology

    African Journals Online (AJOL)

    Items 1 - 17 of 17 ... Archives: Egyptian Journal of Biology. Journal Home > Archives: Egyptian Journal of Biology. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 17 of 17 Items ...

  17. Archives: Pan African Medical Journal

    African Journals Online (AJOL)

    Items 1 - 28 of 28 ... Archives: Pan African Medical Journal. Journal Home > Archives: Pan African Medical Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 28 of 28 Items ...

  18. Archives: Orient Journal of Medicine

    African Journals Online (AJOL)

    Items 1 - 26 of 26 ... Archives: Orient Journal of Medicine. Journal Home > Archives: Orient Journal of Medicine. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 26 of 26 Items ...

  19. Archives: Libyan Journal of Medicine

    African Journals Online (AJOL)

    Items 1 - 23 of 23 ... Archives: Libyan Journal of Medicine. Journal Home > Archives: Libyan Journal of Medicine. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 23 of 23 Items ...

  20. Archives: African Crop Science Journal

    African Journals Online (AJOL)

    Items 1 - 50 of 99 ... Archives: African Crop Science Journal. Journal Home > Archives: African Crop Science Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 99 ...

  1. Archives: African Crop Science Journal

    African Journals Online (AJOL)

    Items 51 - 99 of 99 ... Archives: African Crop Science Journal. Journal Home > Archives: African Crop Science Journal. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 51 - 99 of 99 ...

  2. The prokaryote-eukaryote dichotomy: meanings and mythology.

    Science.gov (United States)

    Sapp, Jan

    2005-06-01

    Drawing on documents both published and archival, this paper explains how the prokaryote-eukaryote dichotomy of the 1960s was constructed, the purposes it served, and what it implied in terms of classification and phylogeny. In doing so, I first show how the concept was attributed to Edouard Chatton and the context in which he introduced the terms. Following, I examine the context in which the terms were reintroduced into biology in 1962 by Roger Stanier and C. B. van Niel. I study the discourse over the subsequent decade to understand how the organizational dichotomy took on the form of a natural classification as the kingdom Monera or superkingdom Procaryotae. Stanier and van Niel admitted that, in regard to constructing a natural classification of bacteria, structural characteristics were no more useful than physiological properties. They repeatedly denied that bacterial phylogenetics was possible. I thus examine the great historical irony that the "prokaryote," in both its organizational and phylogenetic senses, was defined (negatively) on the basis of structure. Finally, we see how phylogenetic research based on 16S rRNA led by Carl Woese and his collaborators confronted the prokaryote concept while moving microbiology to the center of evolutionary biology.

  3. Archives: African Journal of Urology

    African Journals Online (AJOL)

    Items 1 - 50 of 66 ... Archives: African Journal of Urology. Journal Home > Archives: African Journal of Urology. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 of 66 Items, 1 2 ...

  4. Archives: Jos Journal of Medicine

    African Journals Online (AJOL)

    Items 1 - 18 of 18 ... Archives: Jos Journal of Medicine. Journal Home > Archives: Jos Journal of Medicine. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 18 of 18 Items. 2017 ...

  5. Archives: Edo Journal of Counselling

    African Journals Online (AJOL)

    Items 1 - 6 of 6 ... Archives: Edo Journal of Counselling. Journal Home > Archives: Edo Journal of Counselling. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 6 of 6 Items. 2011 ...

  6. Archives: les cahiers du cread

    African Journals Online (AJOL)

    Items 1 - 24 of 24 ... Archives: les cahiers du cread. Journal Home > Archives: les cahiers du cread. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 24 of 24 Items. 2016 ...

  7. Archives: Annals of Modern Education

    African Journals Online (AJOL)

    Items 1 - 8 of 8 ... Archives: Annals of Modern Education. Journal Home > Archives: Annals of Modern Education. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 8 of 8 Items. 2016 ...

  8. NASA's Astrophysics Data Archives

    Science.gov (United States)

    Hasan, H.; Hanisch, R.; Bredekamp, J.

    2000-09-01

    The NASA Office of Space Science has established a series of archival centers where science data acquired through its space science missions is deposited. The availability of high quality data to the general public through these open archives enables the maximization of science return of the flight missions. The Astrophysics Data Centers Coordinating Council, an informal collaboration of archival centers, coordinates data from five archival centers distiguished primarily by the wavelength range of the data deposited there. Data are available in FITS format. An overview of NASA's data centers and services is presented in this paper. A standard front-end modifyer called `Astrowbrowse' is described. Other catalog browsers and tools include WISARD and AMASE supported by the National Space Scince Data Center, as well as ISAIA, a follow on to Astrobrowse.

  9. Download - PGDBj - Ortholog DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available e Description Download License Update History of This Database Site Policy | Contact Us Download - PGDBj - Ortholog DB | LSDB Archive ... ...List Contact us PGDBj - Ortholog DB Download First of all, please read the license of this database. Data na...switchLanguage; BLAST Search Image Search Home About Archive Update History Data

  10. SODA: Smart Objects, Dumb Archives

    Science.gov (United States)

    Nelson, Michael L.; Maly, Kurt; Zubair, Mohammad; Shen, Stewart N. T.

    2004-01-01

    We present the Smart Object, Dumb Archive (SODA) model for digital libraries (DLs). The SODA model transfers functionality traditionally associated with archives to the archived objects themselves. We are exploiting this shift of responsibility to facilitate other DL goals, such as interoperability, object intelligence and mobility, and heterogeneity. Objects in a SODA DL negotiate presentation of content and handle their own terms and conditions. In this paper we present implementations of our smart objects, buckets, and our dumb archive (DA). We discuss the status of buckets and DA and how they are used in a variety of DL projects.

  11. Archival Education in Scandinavian Countries

    Directory of Open Access Journals (Sweden)

    Muhammet Hanefi Kutluoğlu

    2008-03-01

    Full Text Available Every country has responsibilities to provide the necessary personnel needed for their archival inheritance by education. Education can be shaped through tradition, historical inheritance and scientifi c necessities by defi ning the right educational method. Scandinavian countries have determined different education models based on their tradition, historical inheritance and requirements. In this article we focused on the formation of archival tradition, application of archival education in Scandinavian countries and the infl uence of the developments taking place in Europe on these countries. The relation between the archival education in European and Scandinavian countries is evaluated through a comparative method, and similarities to other countries are also evaluated. Finally, the present situation of archival education and the measures needed in this fi eld are taken into consideration.

  12. A new spin on nuclei

    International Nuclear Information System (INIS)

    Clark, R.; Wadsworth, B.

    1998-01-01

    Magnetic rotation is a new phenomenon that is forcing physicists to rethink their understanding of what goes on inside the nucleus The rotation of quantum objects has a long and distinguished history in physics. In 1912 the Danish scientist Niels Bjerrum was the first to recognize that the rotation of molecules is quantized. In 1938 Edward Teller and John Wheeler observed similar features in the spectra of excited nuclei, and suggested that this was caused by the nucleus rotating. But a more complete explanation had to wait until 1951, when Aage Bohr (the son of Niels) pointed out that rotation was a consequence of the nucleus deforming from its spherical shape. We owe much of our current understanding of nuclear rotation to the work of Bohr and Ben Mottelson, who shared the 1975 Nobel Prize for Physics with James Rainwater for developing a model of the nucleus that combined the individual and collective motions of the neutrons and protons inside the nucleus. What makes it possible for a nucleus to rotate? Quantum mechanically, a perfect sphere cannot rotate because it appears the same when viewed from any direction and there is no point of reference against which its change in position can be detected. To see the rotation the spherical symmetry must be broken to allow an orientation in space to be defined. For example, a diatomic molecule, which has a dumbbell shape, can rotate about the two axes perpendicular to its axis of symmetry. A quantum mechanical treatment of a diatomic molecule leads to a very simple relationship between rotational energy, E, and angular momentum. This energy is found to be proportional to J(J + 1), where J is the angular momentum quantum number. The molecule also has a magnetic moment that is proportional to J. These concepts can be applied to the atomic nucleus. If the distribution of mass and/or charge inside the nucleus becomes non-spherical then the nucleus will be able to rotate. The rotation is termed ''collective'' because many

  13. Relation between the location of elements in the Thomsen-Bohr type periodic table and lysosomal accumulation in tumor and liver

    International Nuclear Information System (INIS)

    Ando, Atsushi; Ando, Itsuko

    1989-01-01

    This study was undertaken to evaluate the lysosomal accumulation of radioactive metal ions in tumor and liver, using tumor-bearing animals. From the experimental of lysosomal accumulation and binding substance for nineteen radioactive metal ions, the following results were obtained. Hard and borderline acids which have incomplete d-shells accumulated extensively in lysosomes of tumor and liver with time after administration of these ions. They were bound in these tissues to the acid mucopolysaccharides whose molecular weights exceed 40,000 daltons. Trivalent hard acids (Ga 3+ , In 3+ , Yb 3+ , Tm 3+ ) which have complete d-shells accumulated extensively in the lysosomes of liver, but very little in lysososmes of tumor, and were bound to the acid mucopolysaccharide with a molecular weight of about 10,000 daltons in tissues. It was clear based on these results and the facts reported previously that a very interesting relationship existed between the location of elements in the Thomsen-Bohr type periodic table and the lysosomal accumulation of metal ions

  14. Digital Preservation at the Swiss Federal Archives

    International Nuclear Information System (INIS)

    Ohnesorge, Krystyna

    2012-01-01

    The Swiss Federal Archives (SFA) archives Swiss government data when it is no longer in use. The SFA is responsible for advising, inspecting and issuing directives in records management and archiving services in offices, agencies and institutions subjected to the Federal Act on Archiving; as well as archiving and disseminating records and data of archival value. With regard to RWM, it thus in fact is an additional regulator. The conceptual basis for digital archiving at the SFA is based on the ISO OAIS Open Archival Information System Reference Model (ISO 14721:2003). The SFA use a process-orientated approach. The SFA and the Federal Office decide jointly which documents and data are to be archived. Archive-worthy documents and data are selected on the basis of a systematic appraisal. Wherever possible this should be carried out pro-actively - before the documents are actually created - based on an indexing or classification system. If there is clarity, people will know what data - and metadata - to keep for the submission. The submission is split into several stages, from appraisal to the conclusion of the submission. Information is never changed once it is archived, except that it carries out conservation measures. New information is a new submission. The sustainable information management is a core expertise of national archives. The SFA preserves digital records and data and is responsible for their secure and appropriate safe-keeping, description and dissemination. For the archiving of relational databases (e.g. Microsoft Access, Oracle and SQL Server), the SFA have developed a format known as SIARD (Software Independent Archiving of Relational Databases). SIARD is an open standard and is supported by the SIARD Suite application, which can be used to convert relational databases into SIARD format. The SIARD Suite is now in use worldwide (over 170 downloads). The SFA distribute the SIARD Suite free of charge in conformity with the license agreement. Currently

  15. Taxon (Viridiplantae) - PGDBj - Ortholog DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available of This Database Site Policy | Contact Us Taxon (Viridiplantae) - PGDBj - Ortholog DB | LSDB Archive ... ...List Contact us PGDBj - Ortholog DB Taxon (Viridiplantae) Data detail Data name Taxon (Viridiplantae) DOI 10...switchLanguage; BLAST Search Image Search Home About Archive Update History Data

  16. Taxon (Cyanobacteria) - PGDBj - Ortholog DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available of This Database Site Policy | Contact Us Taxon (Cyanobacteria) - PGDBj - Ortholog DB | LSDB Archive ... ...List Contact us PGDBj - Ortholog DB Taxon (Cyanobacteria) Data detail Data name Taxon (Cyanobacteria) DOI 10...switchLanguage; BLAST Search Image Search Home About Archive Update History Data

  17. Toward a Greater Discourse: Issues in Religious Archives

    Directory of Open Access Journals (Sweden)

    Robert Presutti

    2010-06-01

    Full Text Available The topic of religious archives, a catalyst of much discussion in archival literature, has traditionally been overlooked within the discourse of the American Theological Library Association (ATLA. This essay provides a survey analysis of three pertinent issues in religious archives with the intention of generating a wider discussion on religious archives within ATLA. These issues include the role of graduate archival education, the effects of religious faith on both the archival record and the individual archivist, and the idea of a theology of archives. An extended review of the contributions of James O’Toole to the discussion of religious archives is utilized.

  18. Phenome data - High-sugar stress - DGBY | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...s.zip File size: 90KB File name: Original file: High-sugar_stress.xls File URL: ftp://ftp.biosciencedbc.jp/archive/dgby/LATEST/Hi... Center for Protein Sequences) About This Database Database Description Download License Update History of Thi...s Database Site Policy | Contact Us Phenome data - High-sugar stress - DGBY | LSDB Archive ... ...List Contact us DGBY Phenome data - High-sugar stress Data detail Data name Phenome data - High-sugar stress

  19. Internet FAQ Archives - Online Education - faqs.org

    Science.gov (United States)

    faqs.org Internet FAQ Archives - Online Education faqs.org faqs.org - Internet FAQ Archives Internet FAQ Archives Online Education Internet RFC Index Usenet FAQ Index Other FAQs Documents Tools IFC Rated FAQs Internet RFC/STD/FYI/BCP Archives The Internet RFC series of documents is also available from

  20. Efficiency of PR communication in establishing links between archives and students: case study of the State Archives in Zadar

    Directory of Open Access Journals (Sweden)

    Goran Pavelin

    2013-03-01

    Full Text Available The aim of the paper is to highlight the changing role of archives and to use the case study to indicate the lacking communication with students due to the absence of PR activities, as well as to point to the difficulties of access to digital archival materials needed for student research. Using PR strategies the archives can sensitise the public for its material through different public programmes, exhibitions and fostering goodmedia relations. The archives try to develop good relations with target groups, in this case with students as potential users, taking into consideration their research needs and materials they are interested in. Research findings on student needs for archival data are extremely rare, even in recent American research. Therefore, we conducted this research using a questionnaire for students of four departments of the University of Zadar (geography, history, art history, tourism and communication, who were users of the State Archives in Zadar. The research results show whether the subjects use archival material, for what purposes, and what other resources they used prior to archival material. It also provides information on the level of familiarity with online archival material and use of web pages with archival resources. We can conclude that the students in Zadar are not well acquainted with the digital resources and use them rarely for their research purposes. The situation can be improved by having the State Archives in Zadar take a more proactive role in identifying target groups of students, their user profiles, difficulties they face, and by allowing a more flexible access to archival material. In addition to goo d relations with the Department of Information Sciences, the Archives should foster links with other departments and include them in planning and implementation of their programmes.

  1. Update History of This Database - fRNAdb | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us fRNAdb Update History of This Database Date Update contents 2016/03/29 fRNAdb English archiv...on Download License Update History of This Database Site Policy | Contact Us Update History of This Database - fRNAdb | LSDB Archive ... ...e site is opened. 2006/12 fRNAdb ( http://www.ncrna.org/ ) is opened. About This Database Database Descripti

  2. Sample ontology, GOstat and ontology term enrichment - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM....biosciencedbc.jp/archive/fantom5/datafiles/LATEST/extra/Ontology/ File size: 1.8 MB Simple search URL - Dat...t Us Sample ontology, GOstat and ontology term enrichment - FANTOM5 | LSDB Archive ...

  3. Update History of This Database - RMG | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us RMG Update History of This Database Date Update contents 2016/08/22 The contact address is c...dna.affrc.go.jp/ ) is opened. About This Database Database Description Download License Update Hi...story of This Database Site Policy | Contact Us Update History of This Database - RMG | LSDB Archive ... ... URL of the portal site is changed. 2013/08/07 RMG archive site is opened. 2002/09/25 RMG ( http://rmg.rice.

  4. Update History of This Database - DGBY | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us DGBY Update History of This Database Date Update contents 2014/10/20 The URL of the portal s...aro.affrc.go.jp/yakudachi/yeast/index.html ) is opened. About This Database Database Description Download License Update Hi...story of This Database Site Policy | Contact Us Update History of This Database - DGBY | LSDB Archive ... ... Expression of attribution in License is updated. 2012/03/08 DGBY English archive site is opened. 2006/10/02

  5. The FARC fuel archive of VVER

    International Nuclear Information System (INIS)

    Zizin, M.N.; Parfenova, N.A.; Proselkov, V.N.; Shishkov, L.K.

    1998-01-01

    The principles of organisation are explained and the structure of the FARC fuel archive for VVER reactors is described. The objective of the archive is accumulation of fuel data, data storage and obtaining the fuel using characteristics. The working version of fuel archive on 01.07.98 is realised, in which the data tables for fuel assemblies for 169 VVER-440 cycles and 35 VVER-1000 cycles are stored. There are two different versions of fuel archive - for VVER-440 (FARC) and for VVER-1000 (FARC1000). A structure of some tables and the texts of programs for them differ. The algorithms and codes for checking integrity, reasonableness and reliability of fuel archive data are developed. (author)

  6. Pathway enrichment and co-expression cluster analysis - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM...lusters File URL: ftp://ftp.biosciencedbc.jp/archive/fantom5/datafiles/phase1.3/extra/Co-expression_clusters...ite Policy | Contact Us Pathway enrichment and co-expression cluster analysis - FANTOM5 | LSDB Archive ...

  7. Archival Information Management System.

    Science.gov (United States)

    1995-02-01

    management system named Archival Information Management System (AIMS), designed to meet the audit trail requirement for studies completed under the...are to be archived to the extent that future reproducibility and interrogation of results will exist. This report presents a prototype information

  8. Update History of This Database - TogoTV | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us TogoTV Update History of This Database Date Update contents 2017/05/12 TogoTV English archiv...ription Download License Update History of This Database Site Policy | Contact Us Update History of This Database - TogoTV | LSDB Archive ... ...e site is opened. 2007/07/20 TogoTV ( http://togotv.dbcls.jp/ ) is opened. About This Database Database Desc

  9. Update History of This Database - ConfC | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us ConfC Update History of This Database Date Update contents 2016/09/20 ConfC English archive ...tion Download License Update History of This Database Site Policy | Contact Us Update History of This Database - ConfC | LSDB Archive ... ...site is opened. 2005/05/01 ConfC (http://mbs.cbrc.jp/ConfC/) is opened. About This Database Database Descrip

  10. Update History of This Database - tRNADB-CE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us tRNAD...11/08/25 License is updated. 2010/03/29 tRNADB-CE English archive site is opened. 2008/7/1 tRNADB-CE( http:/...Download License Update History of This Database Site Policy | Contact Us Update History of This Database - tRNADB-CE | LSDB Archive ...

  11. Costs of Archival Storage

    DEFF Research Database (Denmark)

    Nielsen, Anders Bo; Thirifays, Alex; Kejser, Ulla Bøgvad

    2012-01-01

    to determine the costs of establishing and maintaining a preservation solution destined for long-term preservation of digital materials and to develop a tool capable of doing this operation. In order to fulfill the purposes, the project employed a combination of own and external experience as well as the OAIS......This paper presents an analysis of the cost of archival storage. The study is part of a project conducted by The Danish National Archives, The Royal Library, and The State and University Library to develop a generic cost model for digital preservation (CMDP). The purposes of the study were...... Reference Model as a framework to fully understand and identify the cost critical activities of bit-preservation as described in Archival Storage. We found that the costs of Archival Storage are obviously closely linked to the data volume, but also to the required preservation quality, especially...

  12. Protein (Viridiplantae) - PGDBj - Ortholog DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available ase Description Download License Update History of This Database Site Policy | Contact Us Protein (Viridiplantae) - PGDBj - Ortholog DB | LSDB Archive ... ...List Contact us PGDBj - Ortholog DB Protein (Viridiplantae) Data detail Data name Protein (Viridiplantae) DO...switchLanguage; BLAST Search Image Search Home About Archive Update History Data

  13. License - Plabrain DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us Plabrain... Alike 2.1 Japan . If you use data from this database, please be sure attribute this database as follows: Plabrain...of this database (http://dbarchive.lifesciencedb.jp/english/en/plabrain-db/desc.html) in the article or pape...se Description Download License Update History of This Database Site Policy | Contact Us License - Plabrain DB | LSDB Archive ...

  14. Archiving Electronic Publications - a Librarian's Point of View

    Science.gov (United States)

    Grothkopf, U.

    Archiving electronic journals is complex. There are many questions: Who is responsible for archiving? What is archived? How many copies should be archived. How can one ensure the integrity of electronic documents? How can access be maintained? Technology will provide some answers. Electronic archives will require periodic refreshing and migration to new technology. Many factors remain unknown at present.

  15. A Background to Motion Picture Archives.

    Science.gov (United States)

    Fletcher, James E.; Bolen, Donald L., Jr.

    The emphasis of archives is on the maintenance and preservation of materials for scholarly research and professional reference. Archives may be established as separate entities or as part of a library or museum. Film archives may include camera originals (positive and negative), sound recordings, outtakes, scripts, contracts, advertising…

  16. Protein (Cyanobacteria) - PGDBj - Ortholog DB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available ut This Database Database Description Download License Update History of This Database Site Policy | Contact Us Protein (Cyanobacteria) - PGDBj - Ortholog DB | LSDB Archive ... ...List Contact us PGDBj - Ortholog DB Protein (Cyanobacteria) Data detail Data name Protein (Cyanobacteria) DO...switchLanguage; BLAST Search Image Search Home About Archive Update History Data

  17. Reframing transitions and contesting memories: The archive and the archival object in Peruvian cinema

    OpenAIRE

    Barrow, Sarah

    2015-01-01

    This essay considers the stories behind the production and screening of two very different Peruvian films that both reveal much about the way the archive, the archival object and archival fragment have worked to disrupt and force a reconsideration of key moments in Peruvian political history of the twentieth century. One, a feature film by Francisco Lombardi, Ojos que no ven/Eyes that don’t see (2003), provides a provocative perspective on the impact of the televisual revelations of the corru...

  18. Archives: South African Journal of Botany

    African Journals Online (AJOL)

    Archives: South African Journal of Botany. Journal Home > Archives: South African Journal of Botany. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. This journal has not ...

  19. License - tRNADB-CE | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us tRNAD...-Share Alike 2.1 Japan. If you use data from this database, please be sure attribute this database as follows: tRNAD...: About This Database Database Description Download License Update History of This Database Site Policy | Contact Us License - tRNADB-CE | LSDB Archive ...

  20. The Wismut biosample archive in the occupational medical research. Pathological and molecular epidemiological archive

    International Nuclear Information System (INIS)

    Bruening, Thomas; Johnen, Georg

    2015-01-01

    Worldwide only few biosample archives exist that focus on samples from employees with occupational exposures, especially radiation exposure. The Wismut biosample archive of former uranium miners is a valuable resource for the occupational medical research.

  1. Download - FANTOM5 | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us FANTOM... and CAGE TSS aggregation fantom5_new_experimental_details.zip (273 KB) basic (1.3 TB) Simple search and dow...nload 3 (reprocessed)HeliscopeCAGE sequencing, Delve mapping and CAGE TSS aggregation fantom5_rp_exp_details...access [here]. About This Database Database Description Download License Update History of This Database Site Policy | Contact Us Download - FANTOM5 | LSDB Archive ...

  2. Web Archives for the Analog Archivist: Using Webpages Archived by the Internet Archive to Improve Processing and Description

    OpenAIRE

    Gelfand, Aleksandr

    2018-01-01

    Twenty years ago the Internet Archive was founded with the wide-ranging mission of providing universal access to all knowledge. In the two decades since, that organization has captured and made accessible over 150 billion websites. By incorporating the use of Internet Archive's Wayback Machine into their workflows, archivists working primarily with analog records may enhance their ability in such tasks as the construction of a processing plan, the creation of more accurate historical descript...

  3. Archives: Ethiopian Journal of Health Sciences

    African Journals Online (AJOL)

    Items 1 - 50 of 65 ... Archives: Ethiopian Journal of Health Sciences. Journal Home > Archives: Ethiopian Journal of Health Sciences. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives ...

  4. How to understand the tunneling in attosecond experiment?. Bohr-Einstein photon box Gedanken experiment, tunneling time and the wave particle duality

    Science.gov (United States)

    Kullie, Ossama

    2018-02-01

    The measurement of the tunneling time (T-time) in today's attosecond and strong field (low-frequency) experiments, despite its controversial discussion, offers a fruitful opportunity to understand time measurement and the time in quantum mechanics. In addition, as we will see in this work, a related controversial issue is the particulate nature of the radiation. The T-time in attosecond experiment and its different aspects and models, is discussed in this work, especially in relation to my model of real T-time (Kullie, 2015), where a good agreement with the experiment and an intriguing similarity to the Bohr-Einstein photon box Gedanken experiment was found. The tunneling process itself is still not well understood, but I am arguing that a scattering mechanism (by the laser wave packet) offers a possibility to understand the tunneling process in the tunneling region. This is related to the question about the corpuscular nature of light which is widely discussed in modern quantum optics experiments.

  5. Issues and prospects of digitizing liberation movements' archives ...

    African Journals Online (AJOL)

    User

    collective memory. Keywords: digitization,. NAHECS, liberation archives, digitally born, audio- visual. Introduction and background to liberation archives. Archives are generally records of .... long term preservation and access to selected archival materials ..... by International Library of African Music. (ILAM) in. Rhodes.

  6. Life Sciences Data Archive (LSDA)

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA's Life Sciences Data Archive (LSDA) is an active archive that provides information and data from 1961 (Mercury Project) through current flight and flight analog...

  7. Archives: South African Journal of Education

    African Journals Online (AJOL)

    Items 1 - 50 of 66 ... Archives: South African Journal of Education. Journal Home > Archives: South African Journal of Education. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 50 ...

  8. Archives: West African Journal of Medicine

    African Journals Online (AJOL)

    Items 1 - 40 of 40 ... Archives: West African Journal of Medicine. Journal Home > Archives: West African Journal of Medicine. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 40 of ...

  9. Archives: Journal of Psychology in Africa

    African Journals Online (AJOL)

    Archives: Journal of Psychology in Africa. Journal Home > Archives: Journal of Psychology in Africa. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 4 of 4 Items. 2005. Vol 15 ...

  10. Providing comprehensive and consistent access to astronomical observatory archive data: the NASA archive model

    Science.gov (United States)

    McGlynn, Thomas; Fabbiano, Giuseppina; Accomazzi, Alberto; Smale, Alan; White, Richard L.; Donaldson, Thomas; Aloisi, Alessandra; Dower, Theresa; Mazzerella, Joseph M.; Ebert, Rick; Pevunova, Olga; Imel, David; Berriman, Graham B.; Teplitz, Harry I.; Groom, Steve L.; Desai, Vandana R.; Landry, Walter

    2016-07-01

    Since the turn of the millennium a constant concern of astronomical archives have begun providing data to the public through standardized protocols unifying data from disparate physical sources and wavebands across the electromagnetic spectrum into an astronomical virtual observatory (VO). In October 2014, NASA began support for the NASA Astronomical Virtual Observatories (NAVO) program to coordinate the efforts of NASA astronomy archives in providing data to users through implementation of protocols agreed within the International Virtual Observatory Alliance (IVOA). A major goal of the NAVO collaboration has been to step back from a piecemeal implementation of IVOA standards and define what the appropriate presence for the US and NASA astronomy archives in the VO should be. This includes evaluating what optional capabilities in the standards need to be supported, the specific versions of standards that should be used, and returning feedback to the IVOA, to support modifications as needed. We discuss a standard archive model developed by the NAVO for data archive presence in the virtual observatory built upon a consistent framework of standards defined by the IVOA. Our standard model provides for discovery of resources through the VO registries, access to observation and object data, downloads of image and spectral data and general access to archival datasets. It defines specific protocol versions, minimum capabilities, and all dependencies. The model will evolve as the capabilities of the virtual observatory and needs of the community change.

  11. The new European Hubble archive

    Science.gov (United States)

    De Marchi, Guido; Arevalo, Maria; Merin, Bruno

    2016-01-01

    The European Hubble Archive (hereafter eHST), hosted at ESA's European Space Astronomy Centre, has been released for public use in October 2015. The eHST is now fully integrated with the other ESA science archives to ensure long-term preservation of the Hubble data, consisting of more than 1 million observations from 10 different scientific instruments. The public HST data, the Hubble Legacy Archive, and the high-level science data products are now all available to scientists through a single, carefully designed and user friendly web interface. In this talk, I will show how the the eHST can help boost archival research, including how to search on sources in the field of view thanks to precise footprints projected onto the sky, how to obtain enhanced previews of imaging data and interactive spectral plots, and how to directly link observations with already published papers. To maximise the scientific exploitation of Hubble's data, the eHST offers connectivity to virtual observatory tools, easily integrates with the recently released Hubble Source Catalog, and is fully accessible through ESA's archives multi-mission interface.

  12. Gamma non-ionizing energy loss: Comparison with the damage factor in silicon devices

    Science.gov (United States)

    El Allam, E.; Inguimbert, C.; Meulenberg, A.; Jorio, A.; Zorkani, I.

    2018-03-01

    The concept of non-ionizing energy loss (NIEL) has been demonstrated to be a successful approach to describe the displacement damage effects in silicon materials and devices. However, some discrepancies exist in the literature between experimental damage factors and theoretical NIELs. 60Co gamma rays having a low NIEL are an interesting particle source that can be used to validate the NIEL scaling approach. This paper presents different 60Co gamma ray NIEL values for silicon targets. They are compared with the radiation-induced increase in the thermal generation rate of carriers per unit fluence. The differences between the different models, including one using molecular dynamics, are discussed.

  13. The Rosetta Science Archive: Status and Plans for Completing and Enhancing the Archive Content

    Science.gov (United States)

    Heather, D.; Barthelemy, M.; Fraga, D.; Grotheer, E.; O'Rourke, L.; Taylor, M.

    2017-09-01

    On 30 September 2016, Rosetta's signal flat-lined, confirming that the spacecraft had completed its incredible mission by landing on the surface of Comet 67P/Churyumov-Gerasimenko. Although this marked an end to the spacecraft's active operations, intensive work is still on-going with instrument teams preparing their final science data increments for delivery and ingestion into ESA's Planetary Science Archive (PSA). In addition to this, ESA is establishing contracts with a number of instrument teams to enhance and improve their data and documentation in an effort to provide the best long- term archive possible for the Rosetta mission. This presentation will outline the current status of the Rosetta archive, as well as highlighting some of the 'enhanced archiving' activities planned and underway with the various instrument teams on Rosetta to ensure the scientific legacy of the mission.

  14. Prediction information - GRIPDB | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us GRI...a.nbdc01665-004 Description of data contents Predicted GPCR interaction regions Data file File name: gripdb_...predicted_info.zip File URL: ftp://ftp.biosciencedbc.jp/archive/gripdb/LATEST/gripdb_predicted_info.zip File... size: 219 KB Simple search URL http://togodb.biosciencedbc.jp/togodb/view/gripdb...entries Data item Description ID Prediction information ID GRIP ID GRIP ID related wigh the prediction Predi

  15. Envirion - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...y approved drugs. Data file File name: kegg_medicus_environ_en.zip File URL: ftp:...//ftp.biosciencedbc.jp/archive/kegg-medicus/LATEST/kegg_medicus_environ_en.zip File size: 79 KB Simple searc...h URL http://togodb.biosciencedbc.jp/togodb/view/kegg_medicus_environ_en Data acquisition method - Data anal

  16. Disease - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...bling computational processing and analysis of disease data. Data file File name: kegg_medi...cus_disease_en.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kegg-medicus/LATEST/kegg_medicus_d...isease_en.zip File size: 733 KB Simple search URL http://togodb.biosciencedbc.jp/togodb/view/kegg_medicus_di

  17. Drug - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...metabolizing enzyme, and other molecular interaction network information. Data file File name: kegg_medi...cus_drug_en.zip File URL: ftp://ftp.biosciencedbc.jp/archive/kegg-medicus/LATEST/kegg_medi...cus_drug_en.zip File size: 5.2 MB Simple search URL http://togodb.biosciencedbc.jp/togodb/view/kegg_medi

  18. License - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...ion-NonCommercial-NoDerivs 2.1 Japan. If you use data from this database, please be sure attribute this data...whole of this database, and acquire data; and freely redistribute part or whole of the data from this databa...This Database Site Policy | Contact Us License - KEGG MEDICUS | LSDB Archive ...

  19. Update History of This Database - KAIKOcDNA | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us KAIKOcDNA Update History of This Database Date Update contents 2014/10/20 The URL of the dat... database ( http://sgp.dna.affrc.go.jp/EST/ ) is opened. About This Database Database Description Download License Update Hi...story of This Database Site Policy | Contact Us Update History of This Database - KAIKOcDNA | LSDB Archive ... ...abase maintenance site is changed. 2014/10/08 KAIKOcDNA English archive site is opened. 2004/04/12 KAIKOcDNA

  20. Update History of This Database - TP Atlas | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us TP Atlas Update History of This Database Date Update contents 2013/12/16 The email address i...s ( http://www.tanpaku.org/tpatlas/ ) is opened. About This Database Database Description Download License Update History of Thi...s Database Site Policy | Contact Us Update History of This Database - TP Atlas | LSDB Archive ... ...n the contact information is corrected. 2013/11/19 TP Atlas English archive site is opened. 2008/4/1 TP Atla

  1. Update History of This Database - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available glish archive site is opened. 2010/10/01 KEGG MEDICUS ( http://www.kegg.jp/kegg/medicus/ ) is opened. About ...[ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...CUS Update History of This Database Date Update contents 2014/05/09 KEGG MEDICUS En...This Database Database Description Download License Update History of This Database Site Policy | Contact Us Update History of This Database - KEGG MEDICUS | LSDB Archive ...

  2. Archives: Journal of Mining and Geology

    African Journals Online (AJOL)

    Items 1 - 13 of 13 ... Archives: Journal of Mining and Geology. Journal Home > Archives: Journal of Mining and Geology. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 13 of 13 ...

  3. Archives: African Journal of Oral Health

    African Journals Online (AJOL)

    Items 1 - 6 of 6 ... Archives: African Journal of Oral Health. Journal Home > Archives: African Journal of Oral Health. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives. 1 - 6 of 6 Items ...

  4. Study on archive management for nuclear facility decommissioning projects

    International Nuclear Information System (INIS)

    Huang Ling; Gong Jing; Luo Ning; Liao Bing; Zhou Hao

    2011-01-01

    This paper introduces the main features and status of the archive management for nuclear facility decommissioning projects, and explores and discusses the countermeasures in its archive management. Taking the practice of the archive management system of a reactor decommissioning project as an example, the paper illustrates the establishment of archive management system for the nuclear facility decommissioning projects. The results show that the development of a systematic archive management principle and system for nuclear decommissioning projects and the construction of project archives for the whole process from the design to the decommissioning by digitalized archive management system are one effective route to improve the complete, accurate and systematic archiving of project documents, to promote the standardization and effectiveness of the archive management and to ensure the traceability of the nuclear facility decommissioning projects. (authors)

  5. The FARC fuel archive of WWER

    International Nuclear Information System (INIS)

    Zizin, M.N.; Parfenova, N.A.; Proselkov, V.N.; Shishkov, L.K.

    1998-01-01

    The principles of organisation are explained and the structure of the FARC fuel archive for WWER reactors is circumscribed. The objective of archive is accumulation of fuel data, data storage and obtaining of fuel using characteristics. The working version of fuel archive on 01 July 1998 is realised, in which the data tables for fuel assemblies for 169 WWER-440 cycles and 35 WWER-1000 cycles are stored. There are two different versions of fuel archive - for WWER-440 (FARC) and for WWER-1000 (FARC1000). A structure of some tables and the texts of programs for them differ. (Authors)

  6. Data archiving and analysis for CWDD

    International Nuclear Information System (INIS)

    Coleman, T.A.; Novick, A.H.; Meystrik, C.C.; Marselle, J.R.

    1992-01-01

    A computer system has been developed to handle archiving and analysis of data acquired during operations of the Continuous Wave Deuterium Demonstrator (CWDD). Data files generated by the CWDD Instrumentation and Control system are transferred across a local area network to the CWDD Archive system where they are enlisted into the archive and stored on removeable media optical disk drives. A relational database management system maintains an on-line database catalog of all archived files. This database contains information about file contents and formats, and holds signal parameter configuration tables needed to extract and interpret data from the files. Software has been developed to assist the selection and retrieval of data on demand based upon references in the catalog. Data retrieved from the archive is transferred to commercial data visualization applications for viewing, plotting and analysis

  7. COMMUNITY AWARENESS FOR ARCHIVES IN TANZANIA: A ...

    African Journals Online (AJOL)

    Walter

    challenges facing Zanzibar National Archives (ZNA). The study ... legally preserved under the Records and Archives Management Act,. 2002. Lastly, in .... in the findings, the Archives face a lot of challenges on his operation such as lack of ...

  8. A dialogue between archive, knowledge and technology

    Directory of Open Access Journals (Sweden)

    Henrique Machado dos Santos

    2015-11-01

    Full Text Available Objective. Perform a brief reflection on knowledge management in archives, emphasizing the connections necessary for a dialogue between archive, knowledge and technology. Method. It consists in review of material previously published in the areas of Management Science, Archival Science and Information Science. The sources consulted consist of books, theses, texts on websites and scientific journal articles indexed in Google Scholar. Thus, the collected data is analyzed qualitatively. Results. There is a close relationship between the archive, knowledge and technology. In this sense, the document has the role of interlocutor in this dialogue. The interdisciplinary scenario envisioned, enhance existing rapprochement between the archival practices and knowledge management, in order to make possible a feedback cycle that will support the practices related to the management, either, of knowledge, of information or of documents. Conclusions. There is need for further studies to address the potential of the archives in order to fill possible gaps theory thus reach multiple looks more points interdisciplinary convergence. Finally, there is the informational potential of archives, then mediated by technology information, can enrich the knowledge management practices, and for this it is essential to strengthen the interdisciplinary relationships between Management Science, Archival Science and Information Science.

  9. Re-using the archive in video posters: a win-win for users and archives

    NARCIS (Netherlands)

    Sanders, W.; Salgado, Mariana

    2017-01-01

    Re-use of digital archival content means interpretation; and the ability to create new and original interpretations of cultural heritage materials constitutes necessary contemporary digital and media literacy skills for any (aspiring) scholar and, by extension, informed citizen. For archives, re-use

  10. Protein - Trypanosomes Database | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us Trypanoso...nhibitor of the protein. Data file File name: trypanosome.zip File URL: ftp://ftp....biosciencedbc.jp/archive/trypanosome/LATEST/trypanosome.zip File size: 1.4 KB Simple search URL http://togo...db.biosciencedbc.jp/togodb/view/trypanosome#en Data acquisition method - Data analysis method - Number of da...ndelian inheritance in Man ) map Location of the gene on a chromosome or its chromosome number pdb PDB ID (P

  11. Download - KEGG MEDICUS | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available [ Credits ] English ]; } else if ( url.search(//en//) != -1 ) { url = url.replace(/...switchLanguage; BLAST Search Image Search Home About Archive Update History Data List Contact us KEGG MEDI...search and download 1 README README_e.html - 2 Drug kegg_medicus_drug_en.zip (5.2... MB) Simple search and download 3 Environ kegg_medicus_environ_en.zip (79 KB) Simple search and download 4 Disease kegg_medi...nload License Update History of This Database Site Policy | Contact Us Download - KEGG MEDICUS | LSDB Archive ...

  12. Engaging With Colonial Archives: Reflections Of An End-User

    Directory of Open Access Journals (Sweden)

    Ayodeji Olukoju

    2016-06-01

    Full Text Available Official and/or public archives were a byproduct of colonial rule in Africa. (Archives are a byproduct of administrative governance everywhere. Given the density and diversity of colonial archival records, historians have tended to rely on them for the study of the colonial period. Publications on the use of archives have not captured the perspective of end-users, who often face peculiar challenges in the use of colonial and metropolitan archives. This paper provides an end-user perspective on colonial archives in Nigeria and the United Kingdom. It highlights the challenges of data collection and prospects of optimal use of archival source material. The discussion is of general application to users of colonial archives especially in the former British colonies in Africa.

  13. Update History of This Database - Q-TARO | LSDB Archive [Life Science Database Archive metadata

    Lifescience Database Archive (English)

    Full Text Available switchLanguage; BLAST Search Image Search Home About Archive Update History Data ...List Contact us Q-TARO Update History of This Database Date Update contents 2014/10/20 The URL of the portal...ption Download License Update History of This Database Site Policy | Contact Us Update History of This Database - Q-TARO | LSDB Archive ... ... site is changed. 2013/12/17 The URL of the portal site is changed. 2013/12/13 Q-TARO English archive site i...s opened. 2009/11/15 Q-TARO ( http://qtaro.abr.affrc.go.jp/ ) is opened. About This Database Database Descri

  14. ACRF Archive User Meeting Summary

    Energy Technology Data Exchange (ETDEWEB)

    SA Edgerton; RA McCord; DP Kaiser

    2007-10-30

    On October 30, 2007, the U.S. Department of Energy’s (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) sponsored an all-day workshop to assess the status of the ACRF Archive. Focus areas included usability of current functions, plans for revised functions, proposals for new functions, and an overarching discussion of new ideas. Although 13 scientists familiar with ACRF and the ARM Program were invited to the workshop, only 10 scientists were available to attend the workshop. ACRF consists of the infrastructure that was developed to support the ARM Program and includes the ACRF Archive (previously called the ARM Archive). The scientists who participated in the meeting ranged from those who used the Archive frequently to those who seldom or never had accessed the Archive. The group was spread across disciplines, i.e. modelers, conservationists, and others from universities and government laboratories. A few of the participants were funded by the ARM Program, but most were not funded currently by ARM. During the past year, several improvements were made to the ACRF Archive to link it with the ARM/ACRF web pages, add a shopping cart feature, and expand on search parameters. Additional modifications have been proposed and prototypes of these proposals were made available for the participants. The participants were given several exercises to do before the meeting, and their feedback was requested to help identify potential problems and shortcomings with the existing structure and to recommend improvements.

  15. Science in the archives pasts, presents, futures

    CERN Document Server

    2017-01-01

    "Science in the Archives" reveals affinities and continuities among the sciences of the archives, across many disciplines and centuries, in order to present a better picture of essential archival practices and, thereby, the meaning of science. For in both the natural and human sciences, archives of the most diverse forms make cumulative, collective knowledge possible. Yet in contrast to laboratories, observatories, or the field, archives have yet to be studied across the board as central sites of science. The volume covers episodes in the history of astronomy, geology, genetics, classical philology, climatology, history, medicine, and ancient natural philosophy, as well as fundamental practices such as collecting, retrieval strategies, and data mining. The time frame spans doxology in Greco-Roman antiquity to NSA surveillance techniques and the quantified-self movement. Each chapter explores the practices, politics, economics, and open-ended potential of the sciences of the archives, making this the first boo...

  16. Care of architectural archival material

    Directory of Open Access Journals (Sweden)

    Perović-Ivović Svetlana

    2015-01-01

    Full Text Available The paper focuses on the complex issue of the preservation and maintenance of architectural records as a distinctive type of archival material, addressing the problems of care and storage of diverse oversize documents done on different supports: architectural drawings on drafting cloth, waxed cloth, paper, plastic film; reproductions such as blueprints, diazo prints, and other types of non-textual documents. Attention is paid to all types of damage caused both by internal factors, i.e. resulting from the nature of the support material, and by external factors involved in the degradation of architectural archival material. The paper also presents comparative conservation methods applied to architectural documents kept in the Archives of Yugoslavia. In conclusion, it points to the importance of preventive care as regards storage conditions, handling and display of this type of archival material.

  17. Building an Archival Collections Portal

    Directory of Open Access Journals (Sweden)

    Stuart Marquis

    2008-06-01

    Full Text Available Columbia University Libraries has developed the Archival Collections Portal, a unified search system helping users discover archival resources in a streamlined way. We combined the power of Lucene and Solr to search XML, parse JSON objects, create EAD-compliant documents, and deliver results in an easy-to-use interface. By reusing MARC records and employing new search engine features and techniques, we are able to bring important and hard-to-find collections to researchers and archivists. The canonical home page of the Portal is http://www.columbia.edu/library/archival/.

  18. Novel approaches for inspiring students and electrifying the public

    Science.gov (United States)

    Lidström, Suzy; Read, Alex; Parke, Stephen; Allen, Roland; Goldfarb, Steven; Mehlhase, Sascha; Ekelöf, Tord; Walker, Alan

    2014-03-01

    We will briefly summarize a wide variety of innovative approaches for inspiring students and stimulating broad public interest in fundamental physics research, as exemplified by recent activities related to the Higgs boson discovery and Higgs-Englert Nobel Prize on behalf of the Swedish Academy, CERN, Fermilab, and the Niels Bohr Institute. Personal interactions with the scientists themselves can be particularly electrifying, and these were encouraged by the wearing of ``Higgs Boson? Ask Me!'' badges, which will be made available to those attending this talk. At CERN, activities include Virtual Visits, (Google) Hangout with CERN, initiatives to grab attention (LEGO models, music videos, art programs, pins, etc.), substantive communication (lab visits and events, museum exhibits, traveling exhibits, local visits, Masterclasses, etc.), and educational activities (summer student programs, semester abroad programs, internships, graduate programs, etc.). For serious students and their teachers, or scientists in other areas, tutorial articles are appropriate. These are most effective if they also incorporate innovative approaches - for example, attractive figures that immediately illustrate the concepts, analogies that will resonate with the reader, and a broadening of perspective. Physica Scripta, Royal Swedish Academy of Sciences.

  19. A noble cause

    CERN Multimedia

    2014-01-01

    Poignant is the word that comes to mind this week, a week in which we lost the last surviving founding father of CERN, François de Rose, and in which the institute he was instrumental in creating 60 years ago made a significant step towards the further construction of science in Europe, as CERN and ESA signed a new agreement.   With the passing of François de Rose at the age of 103, we have lost a true pioneer, not only of CERN but also of Europe. And we can take pride in the fact that at 60, CERN still lives up to his vision of what Europe can achieve. De Rose was a diplomat, an ambassador, and a President of the CERN Council. He was an inspirational speaker, as we had the opportunity to witness a decade ago when he addressed CERN’s 50th anniversary celebrations. And in a career that spanned the best part of a century, he rubbed shoulders with the likes of Niels Bohr, Pierre Auger, Edoardo Amaldi and Robert Oppenheimer. It’s true to say that with the...

  20. Arnold Sommerfeld. Atomic physicist and messenger of culture 1868-1951. A biography; Arnold Sommerfeld. Atomphysiker und Kulturbote 1868-1951. Eine Biografie

    Energy Technology Data Exchange (ETDEWEB)

    Eckert, Michael

    2013-09-01

    Arnold Sommerfeld is beside Albert Einstein, Niels Bohr, and Max Planck one of the founders of modern atomic and quantum theory. His career began in the 1890th years at the University of Goettingen, the world center of mathematics of that time. Since 1906 he created on the professorship for theoretical physics at the Munich university one of the most important schools of science, the students of which are well-known theorists of the atomic era like as the Nobel-price winners Hans Bethe, Peter Debye, Wolfgang Pauli, and Werner Heisenberg. He also developed far beyond his subject an unprecedented impact. He travelled as ''messenger of culture'' in many countries in order to advertise in the years after the first world war for the reputation of Germany as culture nation. By the nationalsocialism the Munich ''nursery of theoretical physics'' however was prepared an inglorious end, because Sommerfeld counted for a ''main propagandist of Jewish theories''. By the example of this life of a physicist also the eventful history of a whole subject.