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  1. [Marseille and Jacques Daviel].

    Science.gov (United States)

    Grangier, René

    2011-01-01

    Jacques Daviel, soon an orphan, was educated by his uncle, Dr Sallou. When plague burst in Southern France, he decided to help there, and realised it was good to use "vinaigre des quatre voleurs" to chase fleas. He was taken as a chirurg at the hôtel-Dieu in Marseilles and there developed a new technique to remove cataract.

  2. Jacques Spalter (1929 - 2014)

    CERN Multimedia

    2014-01-01

    It is with great sadness that we announce the death of Jacques Spalter on 1 April. His funeral took place in the presence of family and close friends.   A graduate of the ESPCI in Paris and then of Stanford where he completed his PhD, Jacques Spalter started work at CERN in 1968. He spent his entire career in the DD Division (which later became the IT Department) and retired in 1994. Throughout this period, he was held in high esteem by successive heads of the Division, who entrusted him with administration, planning and budget management responsibilities, as well as with the task of representing the Division on personnel recruitment committees. He lived through the days when IT and computers were still in their formative years, and went on to participate in the extraordinary advances in this field, which changed the way in which physics experiments were performed and in which data was automatically analysed. All of the computing power was centralised, and the CDC and IBM supercomputers and ...

  3. Conversations avec Jacques Fontanille

    Directory of Open Access Journals (Sweden)

    Jean Cristtus Portela

    2006-01-01

    Full Text Available

    Cet entretien porte sur le parcours intellectuel de Jacques Fontanille, fondateur du Centre de Recherches Sémiotiques de l’Université de Limoges et responsable du Séminaire Intersémiotique de Paris, théoricien dont l’activité scientifique se mêle au parcours historique et théorique de la Sémiotique d’origine greimassienne. Dans cette interview par courrier électronique réalisée l’été 2006, Fontanille parle des épisodes qui ont marqué les débuts de son travail comme sémioticien et notamment dês développements les plus récents de la Sémiotique.

  4. Conversations avec Jacques Fontanille

    OpenAIRE

    2006-01-01

    Cet entretien porte sur le parcours intellectuel de Jacques Fontanille, fondateur du Centre de Recherches Sémiotiques de l’Université de Limoges et responsable du Séminaire Intersémiotique de Paris, théoricien dont l’activité scientifique se mêle au parcours historique et théorique de la Sémiotique d’origine greimassienne. Dans cette interview par courrier électronique réalisée l’été 2006, Fontanille parle des épisodes qui ont marqué les débuts de son travail comme sémioticien et not...

  5. A Discussion with Jacques Derrida.

    Science.gov (United States)

    Derrida, Jacques

    1990-01-01

    Presents an edited transcript of a discussion held in April 1989 between Jacques Derrida and a group of students and professors concerning Derrida's "Afterword: Toward an Ethic of Discussion." Discusses Derrida's views on "deconstruction" as a term and a movement, the idea of arguments and persuasion, and specific power…

  6. The significance of Jacques Lacan.

    Science.gov (United States)

    Leavy, S A

    1977-01-01

    The contemporary French psychoanalyst, Jacques Lacan, has offered a reinterpretation of basic Freudian concepts that is to a great extent based on the structural linguistics of F. de Saussure. Certain fundamental ideas of Lacan, such as his views that "the unconscious is structured like a language" and that "the unconscious is the discourse of the Other" are examined here, and an attempt is made to place them in perspective in psychoanalysis.

  7. Jacques Prentki 1920-2009

    CERN Document Server

    CERN Bulletin

    2009-01-01

    J. Prentki (second from the left), in discussion with his colleagues.  Jacques Prentki passed away at 3.00 a.m. on Sunday, 29 November at the age of 89. Jacques Prentki embodied everything that CERN's Theory Division stood for. He joined it at the very start of CERN in 1955 and remained there right to the end. He acted as a link between successive Division Leaders Feretti, Fierz and Van Hove before becoming an excellent and long-serving Division Leader himself. His research on hadron symmetries, first with Bernard D'Espagnat, was extremely important, and he played an instrumental role both within the Division and as the editor of Physics Letters and international conference proceedings. He was also in very close contact with the experimentalists, including his friends Charles Peyrou and Georges Charpak. He was renowned for his discernment in the field of physics and his remarkable judgement led many to seek his opinion before publishing their work. He was highly cultured with a deep interest i...

  8. Jacques Rancière and indisciplinarity

    NARCIS (Netherlands)

    M.A. Baronian; M. Rosello

    2008-01-01

    This is the transcript of an interview conducted with Jacques Rancière by Marie-Aude Baronian and Mireille Rosello from the University of Amsterdam and ASCA. A version of this interview was published in Dutch by Valiz (NL), in a volume of studies on Jacques Rancière that appeared in the Netherlands

  9. Nouvelles conversations avec Jacques Fontanille

    OpenAIRE

    2015-01-01

    Cette interview réalisée de février à mai 2014 aborde les développements les plus récents de l’œuvre de Jacques Fontanille, sémioticien français qui est une des figures phares de la sémiotique européenne. Ici le sémioticien fait le point sur la sémiotique des pratiques et sur le concept de formes de vie, sujet de son dernier ouvrage encore inédit. Au cours de ces conversations, qui prolongent celles réalisées en 2006 (PORTELA, 2006), Fontanille parle de la situation actuelle de la ...

  10. Tribute to Dr Jacques Rogge

    DEFF Research Database (Denmark)

    Bourgois, Jan G; Dumortier, Jasmien; Callewaert, Margot

    2017-01-01

    the former President of the International Olympic Committee, he was also an orthopaedic surgeon and a keen sailor, competing at three Olympic Games. In 1972, in fulfilment of the requirements for the degree of Master in Sports Medicine, he was the first who studied a sailors' muscle activity by means......'A tribute to Dr J. Rogge' aims to systematically review muscle activity and muscle fatigue during sustained submaximal quasi-isometric knee extension exercise (hiking) related to Olympic dinghy sailing as a tribute to Dr Rogge's merits in the world of sports. Dr Jacques Rogge is not only...... in Sports Medicine at the Ghent University. Hiking is a critical bilateral and multi-joint movement during dinghy racing, accounting for >60% of the total upwind leg time. Hiking generates large stresses in the anterior muscles that cross the knee and hip joint. Hiking is considered as a quasi...

  11. Nouvelles conversations avec Jacques Fontanille

    Directory of Open Access Journals (Sweden)

    Jean Cristtus PORTELA

    2015-12-01

    Full Text Available Cette interview réalisée de février à mai 2014 aborde les développements les plus récents de l’œuvre de Jacques Fontanille, sémioticien français qui est une des figures phares de la sémiotique européenne. Ici le sémioticien fait le point sur la sémiotique des pratiques et sur le concept de formes de vie, sujet de son dernier ouvrage encore inédit. Au cours de ces conversations, qui prolongent celles réalisées en 2006 (PORTELA, 2006, Fontanille parle de la situation actuelle de la sémiotique en France, du rapport entre sémiotique et sciences humaines et du rôle de l’intellectuel dans la société. Selon J. Fontanille, la sémiotique doit faire face aux problématiques théoriques transversales et répondre aux questions sociétales, sans se focaliser seulement sur les apories et les questions internes aux courants sémiotiques en tant que regroupements institutionnels. Ainsi, le plus grand défi de la sémiotique à l’heure actuelle serait de chercher de nouvelles voies pour se réinventer en tant que discipline à vocation prédictive et stratégique.

  12. Jacques Delors - President de la Commission Europeenne

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    Dacian Graţian GAL

    2005-02-01

    Full Text Available This article refers to the President of the European Commission between 1985- 1995, Jacques Delors. He was the single person who exercised the presidency of the European Commission during 10 years and this period was one of the most important for the European construction: the achievement of the Single Market, the development of the Single Currency Unit project, of the new common politics, the enlargement of the European Union from 12 members to 15 members etc. Due the contribution of his presidency to the European construction, Jacques Delors is one of the parents of the European construction and one of the most important political men of the XX century.  

  13. Professor Jacques Cortes prantsuse keele lektoraadis

    Index Scriptorium Estoniae

    2000-01-01

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

  14. Professor Jacques Cortes prantsuse keele lektoraadis

    Index Scriptorium Estoniae

    2000-01-01

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

  15. Literatura y derecho en Jacques Derrida

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    Carlos Antonio Contreras Guala

    2013-01-01

    Full Text Available Se estudia el vínculo entre literatura y derecho en el pensamiento de Jacques Derrida. Se indican algunos recorridos de lectura y se dilucida lo que se entiende por literatura como institución, y su vínculo y alcances en relación con el plagio y con el derecho a decirlo todo en literatura.

  16. Entrevista con Jacques-Alain Miller.

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    Francisco Estévez González

    1987-01-01

    Full Text Available Jacques-Alain MILLER es psicoanalista, editor -uno de cuyos principales cometidos consiste en establecer los textos y la publicación de los Seminarios de Jacques LACAN, tal como le encargó el propio maestro escritor, prestigioso conferenciante y profesor especializado en los fundamentos del psicoanálisis. En la actualidad dirige el Departamento de Psicoanálisis de la Universidad de París VIII. Es miembro del Consejo de la Escuela de la Causa Freudiana, editor de las publicaciones del Campo Freudiano y director de la revista Ornicar, una de las más importantes publicaciones psicoanalíticas en el panorama internacional. Está casado con Judith MILLER -hija de LACAN-, presidenta de la Fundación del Campo Freudiano, con la que tiene dos hijos. Ha visitado España en numerosas ocasiones, pronunciando conferencias, dictando seminarios e impulsando la articulación de grupos de estudio psicoanalíticos en diversas ciudades. Es asesor editorial de la revista «El Analiticón», publicación del Campo Freudiano en España.

  17. Kuidas kirjutatakse ajalugu? / Jacques Revel ; interv. Marek Tamm

    Index Scriptorium Estoniae

    Revel, Jacques

    2007-01-01

    Prantsuse ajaloolase ja ajakirja Annales ühe peatoimetaja J. Revel'i erialasest tegevusest ja teostest. Varem. ilm.: Sündmused, jutustus ja analüüsiskaalad : intervjuu Jacques Reveliga // Revel, Jacques, Farge, Arlette. Mässu loogika : lasteröövlite afäär Pariisis 1750. - Tallinn, 2005. - Lk. 109-123

  18. Did Jacques Lacan say anything new?

    Science.gov (United States)

    Gazzola, Luiz

    2005-01-01

    The late French psychoanalyst Jacques Lacan is an important theoretician, well known in Europe and South America, whose work is rapidly gaining recognition in other countries. However, Lacan is still poorly known in the United States except in academic departments of philosophy, linguistics, and literature. Psychoanalytic clinicians and even many training analysts often find it difficult to approach Lacan's complex theory, and his reputation in the U.S. has suffered from a number of misunderstandings. Nevertheless, judging by his worldwide influence, he has clearly made original contributions to psychoanalytic theory and technique. A biographical sketch of Lacan's life, paired with a brief overview of his writings and seminars, helps to indicate some of the reasons for both the difficulty and the misunderstandings. A flavor of Lacan's works can be achieved through a more detailed look at one of his major concepts: the use of logical time in analysis, which is the origin of the controversial (so-called) "short sessions."

  19. Jacques Monod and Chance and Necessity.

    Science.gov (United States)

    Ribatti, Domenico

    2015-01-01

    Charles Darwin proposed the theory that evolution of live organisms is based on random variation and natural selection. Jacques Monod, in his classic book Chance and Necessity, published 45 years ago, presented his thesis that the biosphere does not contain a predictable class of objects or events, but constitutes a particular occurrence, compatible indeed with the first principles but not deducible from those principles. The biosphere is therefore essentially unpredictable. In his book, Monod expounded at length on the conflict between science and religion. He saw religion as a collection of primitive myths that had been blown to shreds by science. At every turn, Monod emphasized the role of chance in human existence, an idea that is antithetical to essentially every religious doctrine that places humans as some inevitable intention of a Creator.

  20. Psychoanalysis and theology: Jacques Lacan and Paul.

    Science.gov (United States)

    Hackett, C D

    1982-09-01

    The nature of humanity-or the human situation-has been an area of thought intensely studied by theologians and philosophers for centuries. In more recent times, however, psychology has made serious advances into this field of inquiry. It has been able to provide insights applicable to previous theological ideas. The author brings to the reader's attention his twofold purpose: to present an interpretation of the human situation as understood by Jacques Lacan-as informed by such forerunners as Sigmund Freud and Martin Heidegger- and expressed by psychoanalytic method. These same ideas are then examined in light of the writings of St. Paul. From a sensitive study of these two thinkers the author has been able to draw numerous correlations pertinent to contemporary studies within religion and psychology.

  1. The pedagogical perspective of Jacques Maritain

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    Maria Teresa Viglioglia

    2017-02-01

    Full Text Available In the extensive bibliography of Jacques Maritain, there is a book dealing with education titled "L'education à la croisée des chemins". It initially consists of the texts of four lectures held in 1943 at the Yale University, in the United States under the title "Education at the Crossroads", published for the first time in 1943. The contents of these conferences has been published by Fayard in 1959 with the title "Pour une philosophie de l’éducation". This essay by Maritain was later re-modeled to the last edition in French (1969. The work outlines the main coordinates of the educational philosophy of Jacques Maritain, and consists of four sections: I. The errors of contemporary pedagogy; II. The educational relationship; III. Liberal education; IV. Complementary tasks. Maritain emphasizes persons' formation as the primary purpose of education to the American pragmatism and European rationalism, noting that every educational project, of every background it may be, always implies a precise anthropology, sometimes implied. The educational relationship is to avoid the double error of a conception "despotic" on the part of the teacher and of a conception "anarchist" by the pupil. Education must tend to unity of knowledge, making sure that the learning process begins from the experience, but always ends in reason. The final chapters relate more specifically to the organization of education in America, but the first two chapters offer a real philosophical approach to education. This is based on a vision of the person who activates the spiritual dimension, undermined by the development of an individual's technical design. "Education at the crossroads" (which is located in the French neo-Thomism, philosophical and theological contemporary movement focused on the recovery of the thought of St. Thomas Aquinas, who is considered, with appropriate adaptations and interpretations, source of knowledge and imperishable spiritual guides speaks to the need

  2. Presentación de Jacques Lacan.

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    Francisco Pereña García

    1981-01-01

    Full Text Available Jacques LACAN nació el 3 de abril de 1901 en París. Estudió medicina y se especializó en psiquiatría. Su tesis sobre «La Psychose parano'ique dans ses rapports a la personalité» (editado en español por la Editorial Siglo XXI, que data de 1932, prueba sobradamente que su paso por la psiquiatría no fue «dilet.tante». La tradición clínica de CLÉRAMBAULT tenía en LACAN un discípulo privilegiado. Su preocupación por la psicosis no será abandonada una vez que pasó a ser jefe indiscutible del más riguroso freudismo. Cuando habla de sus antecedentes LACAN dice: «Reside en el rastro de CLÉRAMBAULT, nuestro único maestro en psiquiatría. Su automatismo mental, con su ideología mecanicista de la metáfora, muy criticable sin duda, nos parece, en su manera de abordar el texto subjetivo, más cercano a lo que puede construirse por un análisis estructural que ningún esfuerzo clínico en la psiquiatría francesa.» (Escritos 1, Ed. Siglo XXI, p. 3.

  3. Jacques Joseph: Father of modern aesthetic surgery

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    Bhattacharya Surajit

    2008-10-01

    Full Text Available When we review the history of modern aesthetic surgery, a name that stands out as bright as a beacon and precious as gold is undoubtedly that of Jacques Joseph. A surgeon, par excellence, far ahead of his time, who chose to think out of the box, Joseph, despite all odds set out to give respectability to Aesthetic Surgery without depriving it of any scientific core values. By his words and deeds proved beyond doubt that only the very best in the field of reconstructive surgery, can visualize the hidden perfection in imperfection and formulate a treatment plan and a surgical strategy to achieve that elusive perfection. The rich surgical literature that he has left behind, the wealth of surgical instruments that he had designed and above all a way of thinking that he propagated, that aesthetic surgery is not frivolous but very serious endeavor, and treating the psychology of the patient is as important as treating his disease, undoubtedly makes him the revered ′Father of Modern Aesthetic Surgery′.

  4. Jacques Lacan e a clínica do consumo Jacques Lacan and the consumption clinic

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    Márcia Rosa

    2010-06-01

    Full Text Available O texto destaca e percorre os principais momentos nos quais Jacques Lacan se deteve sobre a questão do consumo e, ao fazê-lo, desdobrou três pontos. Inicialmente, o consumo articula-se à ética e à constatação da impossibilidade de pensá-lo apenas com a noção de valor de uso; aquelas de valor de gozo e valor de desejo tornam-se necessárias. A seguir, a associação do consumo ao campo pulsional, especialmente ao objeto oral e às fantasias de devoração, evidencia o deslizamento do "consumismo" à "consumição", que leva o sujeito da posição de consumidor à de objeto consumido. Finalmente, o consumo é tratado nos últimos textos de Lacan através de uma pequena mutação no Discurso do Mestre que faz surgir o Discurso do Capitalista.The text highlights and discusses the key moments in which Jacques Lacan stood on the issue of consumption and, by doing so, deploys three points. Initially, consumption is articulated to ethics and to the impossibility of thinking it only through the notion of value; the notions of jouissance and desire value become necessary. Next, the association of consumption to trieb, especially to the oral object and to devouring fantasies, shows the change of "consumerism" to "consumption" that leads the subject from a position of consumer to one of an object to be consumed. Finally, consumption is treated in Lacan's last texts through a small mutation in the Master's Discourse that gives rise to the Capitalist Discourse.

  5. [Jacques Monod: some unpublished pages of his life].

    Science.gov (United States)

    Gilgenkrantz, Simone

    2015-01-01

    The friendship and affinity of thought between Albert Camus and Jacques Monod were little highlighted in France. A book published in the U.S. in 2013 over the period of the Second World War in France shows their importance. It seemed useful to collect the elements of correspondence and writings reflecting their common concerns,frequent meetings and friendship.

  6. Under the Name of Method: On Jacques Ranciere's Presumptive Tautology

    Science.gov (United States)

    Bingham, Charles

    2009-01-01

    This paper investigates the philosophical method of Jacques Ranciere, with special attention to use of the "presumptive tautology". It distinguishes between the Enlightenment conception of method as universally applicable technique, and the philosophical conception of method as a certain style that has been invented by a certain person.…

  7. Jacques Maritain and John Dewey on Education: A Reconsideration

    Science.gov (United States)

    Gutek, Gerald L.

    2005-01-01

    Jacques Maritain and John Dewey were two of the towering figures in philosophy of education. Maritain led an international revival of Aristotelian and Thomist philosophies known as Integral Humanism. Dewey, a founding figure of Pragmatism, exercised a significant influence on American education. Originating in very different philosophical…

  8. The Humanities, Social Justice, and Reconceptualization: Jacques Maritain Revisited.

    Science.gov (United States)

    Wolff, Richard J.; Miller, Janet L.

    1984-01-01

    Examines the educational thought of Jacques Maritain (1882-1973), the French Catholic philosopher, in terms of its similarity to other recent philosophies of education. Points out the common themes of social transformation in Maritain's work, in the "reconceptualist" movement, and in the proposals of a group of Catholic theorists. (AYC)

  9. Interview with John G. Thompson and Jacques Tits

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2009-01-01

    John G. Thompson and Jacques Tits are the recipients of the 2008 Abel Prize of the Norwegian Academy of Science and Letters. On May 19, 2008, prior to the Abel Prize celebration in Oslo, Thompson and Tits were jointly interviewed by Martin Raussen of Aalborg University and Christian Skau...

  10. Kuidas kirjutatakse ajalugu? / Jacques Le Goff ; interv. Marek Tamm

    Index Scriptorium Estoniae

    Le Goff, Jacques

    2007-01-01

    Prantsuse ajaloolase ja ajakirja Annales ühe peatoimetaja J. Le Goff'i teostest. Varem. ilm.: Ajalugu, antropoloogia ja imaginaarsus : intervjuu Jaques Le Goffiga // Le Goff, Jacques. Raha või elu : majandus ja religioon keskajal. - Tallinn, 2001. - Lk. 108-126

  11. Fundamentos histográficos em Cenzibra Jacques

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    Luiz Henrique Torres

    2006-04-01

    Full Text Available Contextualização dos fundamentos da historiografia republicana no Rio Grande do Sul enfatizando a produção historiográfica de João Cezimbra Jacques e sua defesa da noção de federação e de regionalismo.

  12. Redistributing the Sensory: The Critical Pedagogy of Jacques Ranciere

    Science.gov (United States)

    Lambert, Cath

    2012-01-01

    Jacques Ranciere remains neglected within educational debates. In this paper I examine the potential of his philosophies for enacting critical interventions in relation to contemporary (higher) educational concerns. Ranciere argues against the progressive temporality of pedagogic relations and provides an alternative thesis that equality is a…

  13. Jacques Ranciere, Education, and the Art of Citizenship

    Science.gov (United States)

    Means, Alex

    2011-01-01

    This article is part of a broader effort recently undertaken by educational theorists to verify the implications of Jacques Ranciere's work for the field of educational studies. Rather than attempting to fashion productive linkages between Ranciere and other critical pedagogues, to render a "new logic of emancipation," or explore the political…

  14. Book review: Foucault with Marx by Jacques Bidet

    OpenAIRE

    Blanchard, Alexander

    2016-01-01

    In Foucault with Marx, Jacques Bidet seeks to synthesise the theories of these two formidable thinkers. This is a\\ud highly accomplished book that will be of interest to seasoned political theorists; however, its verbosity and\\ud abstraction never quite allow it to articulate a clear political strategy through which to attend to the harms of\\ud capitalism today, finds Alexander Blanchard.

  15. Jacques Ranciere's Lesson on the Lesson

    Science.gov (United States)

    Chambers, Samuel A.

    2013-01-01

    This article examines the significance of Jacques Ranciere's work on pedagogy, and argues that to make sense of Ranciere's "lesson on the lesson" one must do more but also less than merely explicate Ranciere's texts. It steadfastly refuses to draw out the lessons of Ranciere's writings in the manner of a series of…

  16. Subversion in Jacques Rancières Pädagogik

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    Renate Schreiber

    2013-09-01

    Full Text Available Renate Schreiber zeigt die grundlegende Bedeutung von Jacques Rancières subversiven Ansatz für heutiges pädagogisches Handeln und diskutiert dabei u.a. das Verhältnis von Erklärungen und Selbstermächtigung in dem die Funktion des Willens eine große Rolle spielt. Dabei stellt sie Rancières Metapolitik der Pädagogik vor.

  17. INFLUENŢA LUI JEAN JACQUES ROUSSEAU ASUPRA PEDAGOGIEI MODERNE

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    Alexandru MAZILU

    2015-11-01

    Full Text Available Jean-Jacques Rousseau a avut o influenţă importantă asupra paradigmei pedagogiei moderne. Obiectivismul cunoş-tinţelor sociale în domeniul educaţiei este accentuat de principii educaţionale negative care au generat o contradicţie între individul biologic şi cel social. În domeniul cercetării teoretice a educaţiei, politica poate fi comparată cu educaţia, deoarece aceasta, pe de o parte, cere intervenţii interdisciplinare şi, pe de altă parte, solicită convergenţa viziunilor, fapt necesar pentru a elabora un obiect specific de studiu şi o metodologie proprie de cercetare.THE ROLE OF JEAN JACQUES ROUSSEAU ON THE MODERN PEDAGOGY Jean-Jacques Rousseau had an important role in modern pedagogy pattern. Social knowledge objectivity in the education field is emphasized by the negative education principles, which developed a contradiction between the natural human and the social one. In a theoretical area of research, politics can be compared to the education, because it requires on one hand, interdis-ciplinary interventions and on the other hand, an integrator point of view is needed in order to express a specific study object and a self methodology.

  18. 2045-IJBCS-Article-Bagalwa Jacques

    African Journals Online (AJOL)

    hp

    Water discharge was measured and water samples were collected twice a month from 6 ... energy, drinking and irrigation water for ..... (Economic Commission for Europe) standard limit values of surface freshwater quality for the maintenance of .... practices and hydraulic alteration). .... Democratic Republic of Congo, Central.

  19. A PIEDADE NATURAL EM JEAN-JACQUES ROUSSEAU

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    Gustavo Cunha Bezerra

    2010-12-01

    Full Text Available The eighteenth century philosopher Jean-Jacques Rousseau considers pity as a human feeling that by providing the identification to the other, provides the first tie that binds men among themselves. Through pity, man suffers the suffering of others, because realize that he may suffer the same evils. It is the imagination that active pity throwing himself out of himself, and thus, pity, although natural, manifest only after reflection. In modern society, pity cannot truly promote the ties of humanity, since man went away from his nature. Thus, an education that emphasized the natural development of this feeling could restore the goodness of the earliest societies.

  20. Jean-Jacques Rousseau gramatólogo

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    Jesús Camarero

    2009-04-01

    Full Text Available An analysis about Jean-Jacques Rousseau’s contribution to the theory of writing and the grammatology. This analysis contains a systematic comparison of the rousseaunian ideas about the language and the writing with another theories of the 17th (Arnauld and Lancelot, 18th (Condillac, Paillasson, Jaucourt and 20th centuries (Saussure. The contrast of Rousseau’s ideas to Saussure’s about writing also, allows to make explicit Rousseau’s grammatological ideas’s big importance and his relation with the grammatology (Gelb,Derrida, Harris, exceeding avant la lettre modern linguistics’s phonocentrism.

  1. Jacques Roumain and Gouverneurs de la rosée

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    Mats Lundahl

    2010-11-01

    Full Text Available The year 2007 was the centennial of the birth of Jacques Roumain, the greatest Haitian author of all times. During his short life (he died in 1944 he cultivated a number of literary genres, publishing poems, novels and essays. All these have been collected for the first time in an impressive volume edited by Léon-François Hoffman: Jacques Roumain, 'OEuvres completes', (Roumain, 2003. Here we find 'Bois-d’ébène' (1945, as well as other poetry, the two volumes of short stories, 'La proie et l’ombre' (1931 and 'Les fantoches' (1931, both dealing with the Haitian upper class, and his two great peasant novels, 'La montagne ensorcelée' (1931 and 'Gouverneurs de la rosée' (1944, his absolute masterpiece, published only after his untimely death at the age of 37, as well as his essay on the sacrifice of a voodoo drum, 'Le sacrifice du tambour-assôtô(r' (1943.

  2. Chirac : Euroopas ei tohi luua eraldusjooni / Jacques Chirac ; interv. Erkki Bahovski

    Index Scriptorium Estoniae

    Chirac, Jacques

    2001-01-01

    Intervjuus Prantsusmaa presidendi Jacques Chiraciga käsitletakse EL-i ja NATO laienemist, tööjõu vaba liikumist, Euroopa tuleviku debatti, Euroopa ühise julgeoleku- ja kaitsepoliitika arengusuunda, Prantsusmaa-Eesti suhteid jt. teemasid. Jacques Chiraci eluloolisi andmeid

  3. Enzymatic cybernetics: an unpublished work by Jacques Monod.

    Science.gov (United States)

    Gayon, Jean

    2015-06-01

    In 1959, Jacques Monod wrote a manuscript entitled Cybernétique enzymatique [Enzymatic cybernetics]. Never published, this unpublished manuscript presents a synthesis of how Monod interpreted enzymatic adaptation just before the publication of the famous papers of the 1960s on the operon. In addition, Monod offers an example of a philosophy of biology immersed in scientific investigation. Monod's philosophical thoughts are classified into two categories, methodological and ontological. On the methodological side, Monod explicitly hints at his preferences regarding the scientific method in general: hypothetical-deductive method, and use of theoretical models. He also makes heuristic proposals regarding molecular biology: the need to analyse the phenomena in question at the level of individual cells, and the dual aspect of all biological explanation, functional and evolutionary. Ontological issues deal with the notions of information and genetic determinism, "cellular memory", the irrelevance of the notion of "living matter", and the usefulness of a cybernetic comprehension of molecular biology.

  4. The natural law in the thought of Jacques Maritain

    Directory of Open Access Journals (Sweden)

    Manuel López-Casquete de Prado

    2017-08-01

    Full Text Available The importance of the work of the French author Jacques Maritain is beyond doubt. He was one of the initiators of the personalist movement, and had a decisive influence on the Catholic Social Thought from Populorum Progressio (1967; he also inspired the emergence of a large number of Christian-inspired parties. One of the biggest highlights of his career was the participation in the preparatory works of the Universal Declaration of Human Rights, sponsored by the UN in 1948. That occasion offered him an extraordinary opportunity to discuss and make living philosophy of his thesis on natural law. This paper offers a critical review of Maritains’s thinking on natural law and analyzes his participation in the UN Declaration, which guarantees the importance of his philosophical development.

  5. O problema da natureza humana em Jacques Maritain

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    Névio de Campos

    2013-05-01

    Full Text Available Este artigo tem por objetivo discutir o problema da natureza humana em Jacques Maritain, destacando sua crítica ao humanismo antropocêntrico e a concepção do humanismo integral. Apoia-se na obra Humanismo Integral e nos debates da História Intelectual para problematizar a origem de seus escritos (contexto de produção e a acepção de humanismo teocêntrico (História da Filosofia proposta por esse filósofo tomista. Esta discussão permite-nos afirmar que o humanismo antropocêntrico é acusado por Maritain de conformar, nos tempos modernos, a própria tragédia do homem, da cultura e de Deus, assim como sustentar que o humanismo integral foi postulado como filosofia reintegradora da unidade ocidental, cindida pela filosofia naturalista (Renascimento/Reforma/Iluminismo/Comunismo.

  6. Jacques Pothier. William Faulkner. Essayer de tout dire.

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    André Bleikasten

    2006-04-01

    Full Text Available Jacques Pothier sait de quoi il parle. De Faulkner il a tout lu — les grands romans de Le Bruit et la fureur à Descends, Moïse, bien sûr, mais aussi les premiers poèmes et les premières proses, les textes encore tâtonnants où s’ébauchait l’oeuvre à venir (Le Faune de marbre, « La Colline », Le Père Abraham, etc. et les romans-palimpsestes de la fin, où la fiction faulknérienne, revenant sur ses propres traces, se relisait en se réécrivant. Et Pothier s’est également intéressé de près au Sud,...

  7. Why did Jacques Monod make the choice of mechanistic determinism?

    Science.gov (United States)

    Loison, Laurent

    2015-06-01

    The development of molecular biology placed in the foreground a mechanistic and deterministic conception of the functioning of macromolecules. In this article, I show that this conception was neither obvious, nor necessary. Taking Jacques Monod as a case study, I detail the way he gradually came loose from a statistical understanding of determinism to finally support a mechanistic understanding. The reasons of the choice made by Monod at the beginning of the 1950s can be understood only in the light of the general theoretical schema supported by the concept of mechanistic determinism. This schema articulates three fundamental notions for Monod, namely that of the rigidity of the sequence of the genetic program, that of the intrinsic stability of macromolecules (DNA and proteins), and that of the specificity of molecular interactions.

  8. Jacques Berque et les villes de l’Islam

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    Mohamed Kerrou

    2011-12-01

    Full Text Available Le parcours singulier de Jacques Berque (1910-1995, ajouté à son écriture poétique et à son style érudit et inimitable, a empêché, pour un certain temps, que ses écrits constituent une référence de choix pour les chercheurs en sciences sociales spécialisés dans le monde arabe et musulman. De son vivant, « l’homme des deux rives » fut à la fois sociologue, historien, anthropologue, arabisant, islamologue et, à ses débuts, administrateur colonial – comme son vénéré père Augustin - puis milita...

  9. Hippose seminar: Hervé Godignon ja Jacques Verkerk / Raigo Kollom

    Index Scriptorium Estoniae

    Kollom, Raigo, 1936-

    2015-01-01

    Ypäjäl 31. jaanuaril toimunud Soome ratsaspordi liidu Hippos aretusseminarist, kus esinesid Soome takistussõidu koondise treener Hervé Godignon ja KWPN tõuraamatu hindamiskomisjoni esimees Jacques Verkerk, kes tutvustas lineaarset hindamist praktikas

  10. Kaks vaadet Ameerikast Jacques Derridale / Märt Väljataga

    Index Scriptorium Estoniae

    Väljataga, Märt, 1965-

    1998-01-01

    Kommentaariks Vikerkaares 1998, nr. 7-8 ilmunud artiklitele: Mark Lilla 'Jacques Derrida poliitika' ja Richard Rorty 'Ironistlikust teooriast privaatsete allusioonideni' (mõlemad tõlkinud Märt Väljataga)

  11. Kaks vaadet Ameerikast Jacques Derridale / Märt Väljataga

    Index Scriptorium Estoniae

    Väljataga, Märt, 1965-

    1998-01-01

    Kommentaariks Vikerkaares 1998, nr. 7-8 ilmunud artiklitele: Mark Lilla 'Jacques Derrida poliitika' ja Richard Rorty 'Ironistlikust teooriast privaatsete allusioonideni' (mõlemad tõlkinud Märt Väljataga)

  12. Pedagical enlightenment and natural education in Jean-Jacques Rousseau

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    Cristiano Eduardo Wendt

    2012-05-01

    Full Text Available The essay discusses the importance of Jean-Jacques Rousseau for modern pedagogy, by being grounded on his philosophical-pedagogical work Émile or On Education. It seeks to present the meaning of pedagogical enlightenment as well as the concept of natural education, and the two great novelties brought by Rousseau to the educational realm, i.e., the concept of infancy and of education. In this perspective, it analyzes the three main interpretations to which Rousseau’s enlightenment was submitted along history: As an optimist of reason, primitivist and dialectician of reason. Assuming the Genevan’s thought as a defender of a dialectics of reason, the essay seeks to reflect the unfolding which every concept provokes to its project of natural education and how it reflects in the cognitive and moral development of the infants. At last it deals with the presentation of two innovations which Rousseau brings to the realm of education, the first one which deals with the concept of infancy, and the second one which deals with the pedagogical concept as a whole, by considering the phases of biological, cognitive and moral maturing, where each child is encountered.

  13. Transcendence, Taxis, Trust: Richard Kearney and Jacques Derrida

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    Ulrich Schmiedel

    2017-03-01

    Full Text Available Whatever else it takes to drive a taxi, it takes trust. Day after day, the driver has to decide whether the other is or is not trustworthy. I take the taxi as a test case to analyze and assess Richard Kearney’s diacritical hermeneutics of the other. I argue that Kearney functionalizes the concept of transcendence in order to connect the transcendence of the finite other to the transcendence of the infinite other. However, in his central critique of the deconstructionists following Jacques Derrida, Kearney counters his connection. While Kearney’s critique of Derrida’s account of absolute alterity is correct and compelling, I argue that Derrida’s critique of a distinction between the trustworthy other and the non-trustworthy other might be more crucial than Kearney contends. Insisting on openness to the other’s otherness, Derrida provokes any hermeneutic of the other to trust in transcendence. The taxi is taken as a test to illustrate the implications which diacritical and deconstructive drivers might have for evaluating the entanglement of ethics and eschatology—inside and outside the taxi.

  14. From Mephistopheles to Isaiah: Jacques Loeb, technical biology and war.

    Science.gov (United States)

    Fangerau, Heiner

    2009-04-01

    In 1917, the German-American scientist Jacques Loeb (1859-1924) published a short essay, entitled 'Biology and War', that summarized his disagreement with World War I. He was deeply saddened by the break-up of the international scientific community as a consequence of the actions of bellicose politicians. These actions were in direct opposition to his efforts to promote social reform, mechanistic biology and scientific internationalism. The aim of this paper is to examine Loeb's activities aimed at these efforts before, during and after the war. It attempts to explain how Loeb's scientific work was formed, what was special about it and why it was both successful and attacked. Particular emphasis is placed on how Loeb reacted to the War and the subsequent forced disintegration of his international scientific network. Loeb's attempts to integrate his interpretation of biology into post-war Europe's approach to the life sciences is analysed in connection with his social commitment. It is argued that his emigration to the USA, the circumstances of World War I, the reaction of his German colleagues to it and the demolition of the international scientific community changed: (1) Loeb's feelings towards his old home; (2) the direction of his scientific endeavours; and (3) his engagement in science politics. His correspondence with eminent scientists from all over the world serves as a key to Loeb's efforts in the context of the social elements of scientific networks and perceptions.

  15. Law, Justice and Responsibility in the Philosophy of Jacques Derrida

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    J Jahangiri

    2014-03-01

    Full Text Available The works written in Persian about Jacques Derrida or the works translated into Persian about and from him have concentrated on Derrida’s aesthetic tendencies and forgotten his political philosophy and thought. But, we should know that his political philosophy and thought are so rich and working on them is necessary for our philosophical communities. In English-speaking world, it is for a decade that Derrida’s political thought has attracted writers’ and scholars’ attention. The works written in this period have concentrated independently on Derrida’s political philosophy and thought or have ‘politicized’ his aesthetic concepts. In this essay, we are trying to investigate the concepts of law, justice and responsibility in the philosophy of Derrida. First, we will clarify the distinctions between law and justice. For doing so, we will pay attention to Derridean concept of ‘deconstruction’. For Derrida, as we will see, law is ‘deconstructible’ and justice is ‘undeconstructible’. Second, we will investigate the relations between law, justice and responsibility. We will conclude that justice, contrary to law, does not prevent us from taking responsibility.

  16. ’n Verslag oor die vertaling van dertien Jacques Brel-chansons in Afrikaans

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    B. Odendaal

    2009-07-01

    Full Text Available A report on the translation of thirteen Jacques Brel chansons into Afrikaans The authors of this article also translated the thirteen Jacques Brel chansons in question into Afrikaans. A brief explanation of the generic nature of the French chanson and an evaluation of Brel’s stature as a twentieth-century chanson writer are followed by background details and a description of the translation process involved. Since literary quality is a particular characteristic of chanson lyrics, several paragraphs are dedicated to a discussion of the poetic nature of Brel’s songs.

  17. Jacques Monod (1910-1976) and his publications in the "Annales de l'Institut Pasteur".

    OpenAIRE

    Legout, Sandra

    2010-01-01

    Between 1942 and 1956, Jacques Monod, Nobel Prize winner in Physiology/Medicine, contributed a number of papers to the Annales de l' Institut Pasteur, the ancestor of the journal "Research in Microbiology". Circumstances that led him to publish in the "Annales" are recalled here. Entre 1942 et 1956, Jacques Monod, Prix Nobel de physiologie et de médecine a rédigé de nombreux articles dans les Annales de l'Institut Pasteur, ancêtre du journal "Research in Microbiology". Les circonstances qui ...

  18. 嘉麟名坊——JACQUES GARCIA 系列

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ 在美国北卡罗来纳州海波因特2004年春的国际住宅家具市场上,Baker展示了Jacques Garica精品集.这些精品由国际知名的设计家Jacques Garcia设计,并由Bakerr手工制作,其经典的外形兼具18世纪和19世纪法国设计风格,并带有明显的现代主义色彩,反映了Garcia的慧眼卓识和设计才能.

  19. Vanaks jäänud "noor hunt" Jacques Chirac lahkub, mõru maitse suus / Hent Kalmo

    Index Scriptorium Estoniae

    Kalmo, Hent, 1979-

    2007-01-01

    Tagasivaade Prantsusmaa ametist lahkuva presidendi Jacques Chiraci poliitiku-karjäärile. Lisad: Meedia ütleb Chiracile adieu; Jacques Chiraci elu, töö ja lemmikud. Vt. samas: Kaivo Kopli. Mantlipärijad põlgasid ära Chiraci pärandi

  20. A scientist born in amiens : jacques rohault (1620-1672) (French Title: Un savant amiénois : jacques rohault (1620-1672))

    Science.gov (United States)

    Le Boeuffle, A.

    2004-12-01

    Jacques Rohault is born in Amiens town at the beginning of the seventeen century. After the Middle Ages, science try to use nex methods and want to abandon Greek's dogmas. Rohault came to Paris to continue his studies and met J.B. Poquelin (Molière). He became a friend an a supporter of René Descartes. He was a very popular scientist. He practised many experiments in public and writed the book La physique to popularize science.

  1. A Portrait of the Teacher as Friend and Artist: The Example of Jean-Jacques Rousseau

    Science.gov (United States)

    McEwan, Hunter

    2011-01-01

    The following is a reflection on the possibility of teaching by example, and especially as the idea of teaching by example is developed in the work of Jean-Jacques Rousseau. My thesis is that Rousseau created a literary version of himself in his writings as an embodiment of his philosophy, rather in the same way and with the same purpose that…

  2. Can You Hear Me Now? Jean-Jacques Rousseau on Listening Education

    Science.gov (United States)

    Laverty, Megan J.

    2011-01-01

    In this essay Megan J. Laverty argues that Jean-Jacques Rousseau's conception of humane communication and his proposal for teaching it have implications for our understanding of the role of listening in education. She develops this argument through a close reading of Rousseau's most substantial work on education, "Emile: Or, On Education". Laverty…

  3. The Autodidact in Defense of Himself: Jean-Jacques Rousseau and Knut Hamsun.

    Science.gov (United States)

    Buttry, Dolores

    1980-01-01

    Describes Jean-Jacques Rousseau and Knut Hamsun as self-educated men who never ceased to warn of the evils of formal education. Quoting from their works, considers their feelings toward education as revealed in Rousseau's "Emile," with its description of ideal education, and in the ill effects of education on Hamsun's characters. (AYC)

  4. Jacques Monod (1910-1976) and his publications in the "Annales de l'Institut Pasteur".

    Science.gov (United States)

    Legout, Sandra

    2010-03-01

    Between 1942 and 1956, Jacques Monod, Nobel Prize winner in Physiology/Medicine, contributed a number of papers to the Annales de l' Institut Pasteur, the ancestor of the journal "Research in Microbiology". Circumstances that led him to publish in the "Annales" are recalled here.

  5. Jacques Maritain's Philosophy of History and Philosophy of Education: A Relationship Secured Through Experience and Reason.

    Science.gov (United States)

    D'Souza, Mario

    1997-01-01

    Jacques Maritain's philosophy of history and philosophy of education both deal with the singularity of experience and the universality of reason. The philosophy of history is subordinated to moral philosophy; the philosophy of education is subordinated to metaphysics. Although Maritain's philosophies reflect a Christian world view, they can make a…

  6. The Meaning of the Global City: Jacques Ellul's Continued Relevance to 21st-Century Urbanism

    Science.gov (United States)

    Toly, Noah

    2012-01-01

    Jacques Ellul's book, "The Meaning of the City," widely recognized as one of the most important twentieth century theological reflections on the city, was also one of his most controversial scholarly contributions. Many urbanists interpreted the book as demeaning the city and diminishing the importance of urban policy, planning, design,…

  7. Emancipating Subjects in Science Education: Taking a Lesson from Patti Lather and Jacques Ranciere

    Science.gov (United States)

    Bazzul, Jesse

    2013-01-01

    This paper extends the conversation started by Patti Lather in her forum response to "Neoliberal ideology, global capitalism, and science education: engaging the question of subjectivity", in terms of engaging the thought of Jacques Ranciere. Ranciere can offer (science) educators a more definitive example of (possible) emancipatory political…

  8. Reconsidering Emancipatory Education: Staging a Conversation between Paulo Freire and Jacques Ranciere

    Science.gov (United States)

    Galloway, Sarah

    2012-01-01

    In this essay Sarah Galloway considers emancipation as a purpose for education through examining the theories of Paulo Freire and Jacques Ranciere. Both theorists are concerned with the prospect of distinguishing between education that might socialize people into what is taken to be an inherently oppressive society and education with emancipation…

  9. Initiating "The Methodology of Jacques Ranciere": How Does It All Start?

    Science.gov (United States)

    Mercieca, Duncan P.

    2012-01-01

    Educationalists are currently engaging with Jacques Ranciere's thought on emancipation and equality. The focus of this paper is on what initiates the process that starts emancipation. With reference to teachers the question is: how do teachers become emancipated? This paper discusses how the teacher's life is made "sensible" and how sense is…

  10. La psiquiatría española y Jacques Lacan antes de 1975

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    Druet, Anne Cécile

    2014-06-01

    Full Text Available This article aims to analyse the presence of Jacques Lacan in the domain of Spanish psychiatry before 1975. Firstly, it addresses this question through an examination of the psychiatric press and an analysis of all references made to Lacan (origin, features and development in quantitative and qualitative terms. Secondly, it addresses the history, the context and the consequences of the two lectures that Jacques Lacan gave in Barcelona in 1958 and 1972, at the invitation of some Spanish psychiatrists.El objetivo de este artículo es estudiar la presencia de Jacques Lacan en el ámbito psiquiátrico español antes de 1975. Se aborda en un primer momento esta cuestión a través del escrutinio de la prensa psiquiátrica y del análisis de las referencias a Lacan que aparecen en ella (origen, características, y evolución en términos cuantitativos y cualitativos. Se aborda a continuación la historia, el contexto y las consecuencias de las dos conferencias que Jacques Lacan, invitado por los psiquiatras españoles, dio en Barcelona en 1958 y 1972.

  11. Emancipating Subjects in Science Education: Taking a Lesson from Patti Lather and Jacques Ranciere

    Science.gov (United States)

    Bazzul, Jesse

    2013-01-01

    This paper extends the conversation started by Patti Lather in her forum response to "Neoliberal ideology, global capitalism, and science education: engaging the question of subjectivity", in terms of engaging the thought of Jacques Ranciere. Ranciere can offer (science) educators a more definitive example of (possible) emancipatory political…

  12. Per modum quem solent tenere heretici in respondendo. Confessione, prova e dissimulazione nel tribunale di Jacques Fournier (1318-1325

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    Irene Bueno

    2009-01-01

    . Focusing on the inquisitorial register of Jacques Fournier (1318-1325, this article highlights strains and pressures affecting the construction of confessions during the inquisitorial trial, determining how certain assertions surfaced instead of other ones, under the duplex and opposed mechanisms set in motion by the judge and the defendant. The transformation of oral confessions into written records in Latin and the cultural distance between the individuals involved in the trial had a direct influence on the outcome of confessions. On the other hand, multiple strategies of dissimulation and lies recurrently employed by the accused played a relevant role in the concealment of their subjectivity. The significance of simulative attempts needs to be read in close relation to inquisitorial procedure, placing particular emphasis on the late medieval system of proof in trials against heretics. A close discussion of the interwoven categories of proof, confession, and memory shows how the features of inquisitorial procedure affected the shaping of remembrances: In particular, memoryand its counterpart, forgetfulness, were used as a deliberate strategy of dissimulation and concealment recurrently used by the accused. Diverse attempts to avoid answering and deceive the inquisitorial expectations occur in the depositions released to Jacques Fournier.

  13. Jacques Lacan: apropriação e subversão da lingüística Jacques Lacan: linguistic appropriation and subversion

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    Nadiá Paulo Ferreira

    2002-06-01

    Full Text Available O artigo parte das fontes lingüísticas da teoria de Jacques de Lacan, dando destaque aos conceitos de estrutura, sujeito, signo (Ferdinand de Saussure, metáfora e metonímia (Roman Jakobson, visando demonstrar que as transformações operadas nesses conceitos por Lacan separam de forma irreconciliável a psicanálise da lingüística.The article is based on Lacan's linguistics theory, highlighting the concepts of structure, subject, sign (Ferdinand de Saussure, metaphor and metonymy (Roman Jakobson, aiming to show that Lacan's analysis of these concepts definitely separates psychoanalysts from linguistics.

  14. Ensaio de Pedagogia Comparada: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804) (Essay on Compared Pedagogy: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804).

    Science.gov (United States)

    Fontanella, Francisco Cock

    2000-01-01

    Finds that, although the thought of Jean Jacques Rousseau is frequently cited as an influence on Immanuel Kant, this has no basis regarding pedagogical influence. Compares the "Projecto" and "Emilio" of Rousseau with Kant's "Pedagogia." (BT)

  15. Ensaio de Pedagogia Comparada: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804) (Essay on Compared Pedagogy: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804).

    Science.gov (United States)

    Fontanella, Francisco Cock

    2000-01-01

    Finds that, although the thought of Jean Jacques Rousseau is frequently cited as an influence on Immanuel Kant, this has no basis regarding pedagogical influence. Compares the "Projecto" and "Emilio" of Rousseau with Kant's "Pedagogia." (BT)

  16. Le Cyrano de Bergerac de Jacques Prévot

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    Madeleine Alcover

    2012-04-01

    que, pour éviter au roman de Cyrano une autre censure embarrassante et onéreuse, les « publicateurs » (Le Bret, Charles de Sercy, Jean de Cuigy et peut-être le dédicataire Regnault des Boisclairs ont très probablement eux-mêmes coupé et révisé le texte. La plume de Le Bret se trahit partout, avec sa pléthore de « de sorte que », et une variante de 1657, qu’une minute de notaire (vive l’interdisciplinarité ! permet de dater de 1656, se révèle donc posthume. Autre réseau, mais un peu le même, grâce auquel la vie de Cyrano et celle de ses œuvres se matérialisent et s’étoffent. Une analyse méticuleuse des manuscrits aurait peut-être permis au critique d’y voir clair : la nature composite du texte de 1657, que Prévot a attestée malgré lui, relance la question de la véracité de Le Bret en ce qui concerne sa mission de publier le roman. Mais tout cela passe inaperçu et le recours répétitif à « un » censeur imaginaire permet au critique de tout et de ne rien expliquer. Pour finir sont brièvement rappelées ici deux fausses attributions, répétées depuis 1978 : la substitution d’un personnage du roman qui fait dire à un adolescent tout le discours d’un professeur d’académie sur l’atomisme matérialiste et athée, et l’attribution à Cyrano de sept mazarinades de 1649 que Prévot continue à soutenir, bien qu’un test linguistique, inspiré par les travaux de Harold Love, ait démontré en 2004 l’invraisemblance de ces attributions. Mais Prévot ne le mentionne pas : soit on ignore soit on met sous le boisseau…In his last book on Cyrano’s life and works, Jacques Prévot mainly repeats his 1977-1978 doctoral thesis. As far as biography is concerned, important components, particularly two related to religion and to the army, are ignored or underevaluated. The discovery of Cyrano’s maternal genealogy has revealed, in 2000, a milieu of very pious people, some of which were influent in the Compagnie du

  17. POST-STRUCTURAL RELATIONAL ETHICS OF TEACHER-STUDENT: A THEORETICAL ANALYSIS OF JACQUES DERRIDA AND LUCE IRIGARAY

    National Research Council Canada - National Science Library

    Soo Bin Jang

    2016-01-01

    .... Based on the conception of difference of the French post-structural philosopher, Jacques Derrida, and the Belgian psychoanalytic thinker and feminist, Luce Irigaray, I suggest the relational ethics...

  18. Jacques Derrida, A dessein, le dessin. Suivi de "Derrida à l'improviste" par Ginette Michaud

    OpenAIRE

    Rajalu, Rachel

    2014-01-01

    A dessein, le dessin est la transcription inédite d’une conférence que prononça Jacques Derrida à l’Ecole supérieure d’art au Havre le 16 mai 1991 à l’invitation de François Martin, professeur d’art et artiste. Jacques Derrida y raconte, sous la forme d’une histoire aux aspects parfois intimes, la genèse de l’exposition Mémoires d’aveugle : l’autoportrait et autres ruines qui s’est déroulée au Louvre du 26 octobre 1990 au 21 janvier 1991 et dont il assura le commissariat. Au fil du récit, le ...

  19. De trovadores y surrealistas el cantar: arquitecturas poéticas. La elección de Jacques Roubaud

    OpenAIRE

    Hernández Álvarez, María Vicenta

    2008-01-01

    Jacques Roubaud elige a sus antepasados. Taller de la canso, la poesía de los trovadores del siglo XII, se constituye en modelo. Ellos le revelan la rima y el entrelazado en la matemática del poema. Jacques Roubaud recrea los juegos de los trovadores, y pasando por los surrealistas, propone un "cantar nuevo". En los versos de Pierre Reverdy, de André Bretón, de Paul Eluard, encontramos la memoria y sus variantes.

  20. Alcibíades y el agalma: momento platónico de Jacques Lacan/Alcibiades and agalma: a Jacques Lacan platonic momentum

    Directory of Open Access Journals (Sweden)

    Carlos Etchegoyhen

    2010-03-01

    Full Text Available En El Banquete de Platón, al elogiar Alcibíades a Sócrates, hace pública su loca pasión por éste. En 1961 Jacques Lacan estudiará exhaustivamente ese Diálogo, afirmando que es la descripción de la transferencia más antigua y larga que se conozca; trabaja la erótica de la paiderastía (erastès-erómenos y revela al agalma, como antecedente de su concepto de objeto a. Philippe Julien (1985 y Danielle Arnoux, actualmente, retoman y despliegan valiosos aspectos de esa original elaboración lacaniana. Alcibiade praises Socrates at Plato´s Symposium, and declares publicly his mad passion for him. Jacques Lacan studied hard and deep the Dialogue and made explicit that his was the most ancient and long description of a prsychoanalytical transfert - he worked over paiderastía erotics (erastés-erómenos, and enlight agalma' s concept, as a previous idea of his objet a. Phillippe Julien (1985, and more recently Danielle Arnoux, use and explain some valuable aspects from that former lacanian conception.

  1. PENDIDIKAN ‘BACK TO NATURE’: PEMIKIRAN JEAN JACQUES ROUSSEAU TENTANG PENDIDIKAN

    Directory of Open Access Journals (Sweden)

    I Putu Ayub Darmawan

    2016-12-01

    Full Text Available Perkembangan pendidikan diwarnai dengan lahirnya berbagai pandangan yang melandasi pelaksanaan pendidikan. Salah satu tokoh yang mewarnai perkembangan pendidikan adalah Jean Jacques Rousseau. Karyanya yang terkenal adalah Social Contrack dan buku emile. Dalam bukunya, emile, Rousseau menuangkan pemikirannya tentang pendidikan yang kembali kepada alam dalam buku tersebut. Pandangan Rousseau tentang pendidikan diuraikan berdasarkan kelompok umur dan menekankan pada pendidikan yang kembali kepada alam.

  2. How to Become a Dominant French Philosopher: The Case of Jacques Derrida

    OpenAIRE

    Lamont, Michele

    1986-01-01

    How can a interpretive theory gain legitimacy in two cultural markets as different as France and the United States? This study examines the intellectual, cultural, institutional, and social conditions of legitimation of Jacques Derrida's work in the two countries and develops hypotheses about the process of legitimation of interpretive theories. The legitimation of Derrida's work resulted from a fit between it and highly structured cultural and institutional systems. In France, Derrida capita...

  3. Les Jardins de Jacques Delille et le modèle du jardin paysager

    OpenAIRE

    Barbara Łuczak

    2015-01-01

    In the article we study the image of the garden in Jacques Delille’s well known poem Les Jardins (1782). We argue that the structure of Delille’s poetical vision resembles in some aspects the scheme of the 18th century English landscape garden and examine some of its characteristic elements such as: irregular design, a representation of time in space, imitation of nature, the use of landscape painting techniques, etc.

  4. The Work of Jacques Le Goff and the Challenges of Medieval History / L. Ogre Historien

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    Abel Ignacio López

    2010-08-01

    Full Text Available Rubín, Miri (Editor. The Work of Jacques Le Goff and the Challenges of Medieval History, Rochester, N. Y., Boydell Press, 1997, p. 262.  Es el resultado de un coloquio que tuvo lugar en el Centro de Historia y Economía del King s College, en Cambridge, entre el6 y el9 de abril de 1994. Cerca de cincuenta medievalistas de Gran Bretaña, Francia, Alemania, Bélgica, Hungría, Rusia y Estados Unidos, se reunieron con ocasión del septuagésimo cumpleaños de Le Goff. / Revel, Jacques, Schmitt, Jean Claude (editeurs. L'Ogre Historien. Autour Jacques Le Goff. Paris, GalHmard, 1998, p. 353. L .Ogre Historien reúne una serie de escritos que se ocupan de temas diversos en cierta manera relacionados con propuestas, ya sean metodológicas o temáticas, hechas por Le Goff. Michel Pastoreau escribe sobre los colores y su significado en la historia de la pintura y de los textiles; se concentra en explicar la relación entre colores y códigos sociales.

  5. The Work of Jacques Le Goff and the Challenges of Medieval History / L. Ogre Historien

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    Abel Ignacio López

    2001-01-01

    Full Text Available Rubín, Miri (Editor. The Work of Jacques Le Goff and the Challenges of Medieval History, Rochester, N. Y., Boydell Press, 1997, p. 262.  Es el resultado de un coloquio que tuvo lugar en el Centro de Historia y Economía del King s College, en Cambridge, entre el6 y el9 de abril de 1994. Cerca de cincuenta medievalistas de Gran Bretaña, Francia, Alemania, Bélgica, Hungría, Rusia y Estados Unidos, se reunieron con ocasión del septuagésimo cumpleaños de Le Goff. / Revel, Jacques, Schmitt, Jean Claude (editeurs. L'Ogre Historien. Autour Jacques Le Goff. Paris, GalHmard, 1998, p. 353. L .Ogre Historien reúne una serie de escritos que se ocupan de temas diversos en cierta manera relacionados con propuestas, ya sean metodológicas o temáticas, hechas por Le Goff. Michel Pastoreau escribe sobre los colores y su significado en la historia de la pintura y de los textiles; se concentra en explicar la relación entre colores y códigos sociales.

  6. Abismos do reconhecimento: o legado sociofilosófico de Jean-Jacques Rousseau = Abysses of recognition: the sociophilosophical legacy of Jean-Jacques Rousseau

    OpenAIRE

    Honneth, Axel

    2013-01-01

    O texto se ocupa com a questão da interpretação da obra de Jean-Jacques Rousseau, em particular com suas referências sobre a dependência constitutiva em relação aos outros. Vista negativamente na crítica da cultura, mas positivamente nos esboços de um contrato social, o lugar dessa dependência constitutiva da confirmação e estima por parte dos outros está vinculada ao significado dado ao “amor próprio” nos diferentes textos; mas ela abre a possibilidade de interpretar Rousseau como um teórico...

  7. El modelo sin modelo: El teatro en la filosofía de Jacques Derrida The model without a model: the theater in the phylosophy of Jacques Derrida

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    Alejandro Fielbaum

    2011-01-01

    Full Text Available El trabajo busca indagar en la importancia filosófica del teatro en el pensamiento de Jacques Derrida, a través del seguimiento de las discusiones que implícita o explícitamente refieren a tales temáticas desde sus primeros textos. Tras exponer lo pensado por Derrida como obra de arte, se indaga en la singularidad de la correspondiente al teatro, en tanto yuxtaposición de repetición y representación. Se busca demostrar que la insistencia derridiana en la imagen teatral ha sido injustamente desconsiderada por los intérpretes, puesto que en tal práctica presta la lógica del préstamo que monta el modelo de la falta de modelo desde el cual se constituiría, espectralmente, el sentido. Así, en tanto mimetología general, la deconstrucción poseería una matriz sugerentemente teatral, desde la cual se busca introducir la lectura derridiana de los textos de Antonin Artaud.The essay addresses the philosophical weight of theather in the thinking of Jacques Derrida, following the discussions that -in a implicit or explicit way- refer to the issue from his first texts. After the exposition of what Derrida conceives as a work of art, the singularity of the theather is described in terms of the yuxtaposition of repetition and representation. This article intends to show that the derridian insistence in the image of the theater has been wrongly understimated by the interpreters, because that practice borrows the logic of borrowing that affirms the model of the lack of model from where the sense is spectrally constructed. As a general mimetology, deconstruction has a theatrical matrix, from where it is introduced to the derridian interpretation of Antonin Artaud's texts.

  8. Approche onomastique de Les grandes marées de Jacques Poulin

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    Verónica-Cristina Trujillo González

    2010-01-01

    Full Text Available This study aims to carry out an onomasticsanalysis in order to extract the keypoints in the novel Les grandes marées byJacques Poulin. Literary onomastics gives usthe opportunity to discover nuances in thiswork which, a priori, are imperceptible, butcould be important for its interpretation.This type of analysis allows us to easilyunderstand the portrayal of the charactersand the relationships maintained betweenthem.In this analysis, we intend to demonstratehow the choice of characters’ names, evenplace names, is deliberately used by theauthor and as a consequence, this interpretationcan help us to obtain a better understandingof this work.

  9. "Si Dios no existe" Edipo y el parricidio en el Seminario XVII de Jacques Lacan

    OpenAIRE

    2004-01-01

    El texto analiza algunas consideraciones que el psicoanalista francés Jacques Lacan, en su Seminario XVII, El reverso del psicoanálisis, hace acerca de la formulación freudiana del complejo de Edipo. Primero se plantean algunas de sus ideas acerca de este complejo y su relación con el deseo de la madre. Luego se hace referencia al cuestionamiento que hace Lacan de algunas de las tesis de Freud sobre las implicaciones del parricidio en la constitución de la cultura. Finalmente, se plantea la i...

  10. El cine y Jacques Rancière: fábula, distancia y destino

    OpenAIRE

    Russo, Eduardo A.

    2012-01-01

    La publicación en la Argentina del reciente volumen de Jacques Rancière, Las distancias del cine, agrega un capítulo decisivo al prolongado trato de este pensador con un conjunto de cuestiones que, anudadas por la experiencia cinematográfica, han determinado distintos ámbitos de su trayectoria intelectual. Si bien este libro hace un indudable tándem con la colección de ensayos recogida hace poco más de una década en La fábula cinematográfica, en tanto sus capítulos cuentan al cine como su obj...

  11. [Jean-Jacques Lefrère: A miscarried ambition for blood safety in francophone Africa].

    Science.gov (United States)

    Tayou Tagny, C; Laperche, S; Murphy, E

    2016-02-01

    The announcement of the death of Professor Jean-Jacques Lefrère caused considerable emotion and surprise within the francophone Africa blood transfusion research network. The group was created in 2007 in Paris. Each member that works within this group wanted to pay their last respects through dedicated publication for a brilliant researcher and writer. The tribute describes the creation of the group, its goals, its operations, its achievements and the prospects of its activities while emphasizing the essential role that Professor Lefrère played within the group.

  12. JEAN-JACQUES ROUSSEAU: TREZENTOS ANOS DE UM CAMINHANTE SOLITÁRIO

    OpenAIRE

    2012-01-01

    O Conselho Editorial da Revista Educação & Filosofia tem a enorme satisfação de apresentar aos leitores deste periódico o dossiê Jean-Jacques Rousseau. Esse dossiê foi pensado como atividade comemorativa ao terceiro centenário de nascimento de Rousseau (1712-1778). Filósofo, romancista, músico, Rousseau, em suas obras, margeou diversos assuntos. Com profundidade singular, refletiu proficuamente sobre política, educação, religião, música, ética, constituindo-se num dos principais filósofos da ...

  13. Jacques Joset, La muerte y la gramática. Los derroteros de Fernando Vallejo

    OpenAIRE

    Stefano Tedeschi

    2010-01-01

    Escribir un libro sobre Fernando Vallejo se presenta como una operación siempre algo arriesgada. El tema es controvertido como pocos en el panorama de la literatura hispanoamericana actual: pasiones incondicionales se mueven alrededor de su nombre, hasta llegar a fanatismos quizás merecedores de otros ámbitos. Además Jacques Joset emprende tan atrevida tarea siendo él, como se recuerda en las primeras páginas, « el editor de Cien años de soledad », el que ha pasado largos días de su vida volc...

  14. Bachelor Proef in Sint-Lukas University, Brussels : Office Building Avenue Jacques Georgin

    OpenAIRE

    IBÁÑEZ MARTÍN, LAURA

    2014-01-01

    [es] TFG en Intercambio académico. Sint-Lukas University (Bélgica). En este PFG se realiza el estudio de un edificio de oficinas en la Avenida Jacques Georgin en Bruselas que consta de sótano, cuatro alturas y una azotea. El proyecto, basado en los planos de construcción, consta de seis secciones. Las dos primeras incluyen los dibujos de los planos arquitectónicos y de los planos de detalles constructivos; la tercera describe la instalación de ventilación del edificio con planos detallados, c...

  15. Promises and democracy limits: political discussions on Jacques Derrida’s thought

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    Ana Paula Penchaszadeh

    2010-12-01

    Full Text Available The central theme of this reflection on democracy is the problem of identity and difference in the context of a recognition of the absence of an ultimate foundation of the social and political. An emphasis on the impossibility of aggregation is central to the development of a new way of left-thinking that is more reflective about the paradoxical role that democracy plays in the current world. To address the range of problems that cut across the definition of democracy, this article will examine how two references in post-foundational contemporary political theory understand the thinking of Jacques Derrida, namely: Ernesto Laclau and Chantal Mouffe.

  16. Science and the applications of science from Louis Pasteur to Jacques Monod.

    Science.gov (United States)

    Schwartz, Maxime

    2015-06-01

    Jacques Monod's ideas on the applications of science came within the scope of a long tradition at the Institut Pasteur. Louis Pasteur, whose scientific career was characterized by a permanent come and go between science and its applications, long opposed the idea of getting any income from his research, until the financial needs of the Institut Pasteur made him change his mind. As for Jacques Monod, he remained a fervent supporter of basic science during his whole scientific career. However, once he became director of the Institut Pasteur, he realized that the applications of research had to be developed to support the institute from a financial point of view. Thus, he reorganized the valorization of research in the institute, through an incitation of scientists to develop projects with possible applications, and by creating a company, Institut Pasteur Production, for which he had a factory built, and which was in charge of producing and commercializing the vaccines and reagents stemming from the research at the Institut Pasteur.

  17. Los nudos de las psicosis en la enseñanza de Jacques Lacán The knots of the psychoses in Jacques Lacan' teaching

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    Pablo D. Muñoz

    2005-12-01

    Full Text Available Jacques Lacan ha abordado la psicosis realizando numerosos aportes a la elaboración de su teoría y reconocimiento clínico. Sobre el final de su enseñanza, cuando revisa sus categorías clínicas y las aborda con el soporte de la teoría de nudos, la conceptualiza como una forma particular de anudamiento. En esta novedosa formalización, sin embargo, no se encuentra un abordaje unívoco sino que desde 1971 hasta 1981 presenta diversos tipos de anudamientos. Hasta la actualidad, no se conocen trabajos en que los especialistas los estudien sistemáticamente. El proyecto de investigación UBACyT TP34 (implica una novedad en este sentido pues formula algunas conclusiones sobre el tema. Este trabajo se propone revisarlas y ponerlas en tensión para verificar su adecuación con los textos de Lacan. Tarea imprescindible para poder abordar el objetivo máximo del proyecto becado en curso: explorar el modo en que la concepción nodal reordena la variedad clínica de la psicosis (paranoia, esquizofrenia, parafrenia, manía, melancolía.Jacques Lacan has approached the psychosis carrying out numerous contributions to the elaboration of its theory and clinical recognition. On the end of their teaching, when he revises their clinical categories and it approaches them with the support of the theory of knots, he conceptualizes it like a form peculiar of knotting. In this novel formalization, however, it is not approached in a unified way but rather from 1971 up to 1981 presents diverse knottings types. Until the present time, works are not known in that the specialists study them systematically. The investigation project UBACyT TP34 (1998-2000 implies a novelty in this since sense it formulates some conclusions on the topic. This work intends to revise them and to put them in tension to verify its adaptation with the texts of Lacan. Indispensable task to be able to approach the maximum objective of the project granted a scholarship in course: to explore the

  18. Le temps et l’utopie dans l’œuvre de Jacques Brossard Time and Utopia in the Work of Jacques Brossard

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    Amy J. Ransom

    2010-12-01

    Full Text Available Le cas de Jacques Brossard (1933-2010 est unique parmi les nombreux intellectuels québécois qui se servirent du discours de l’utopie durant la Révolution tranquille et dans les mouvements pour la souveraineté qui la suivirent. Le juriste fut l’auteur de plusieurs études juridico-politiques qui visèrent à démêler le statut du Québec par rapport au Canada en ce qui concerne l’immigration, le territoire et la constitution ; il fut aussi le créateur d’une vaste utopie littéraire, la trilogie en cinq volumes L’oiseau de feu (1989-1997. Après avoir démontré comment la fiction et les études juridico-politiques de Brossard reflètent le contexte sociohistorique de leur création, nous examinons le traitement complexe du temps dans le roman épique et dans les nouvelles de cet auteur. Le traitement non-linéaire du temps dans la théorie marxiste de l’utopie d’Ernst Bloch (1885-1977 nous aide à comprendre comment l’inter-connexion des divers sédiments temporels et l’effacement des frontières entre le passé, le présent et le futur chez Brossard représentent en effet un traitement utopique du temps.Jacques Brossard (1933-2010 presents a unique case among Québec’s intellectuals who drew upon the discourse of utopia during the Quiet Revolution and the subsequent movements for sovereignty. Not only did the jurist author several juridico-political studies examining Québec’s status in relation to Canada regarding immigration, territory and the constitution, he also created a massive literary utopia, the five-volume trilogy L’oiseau de feu (1989-1997. After demonstrating how Brossard’s fiction and non-fiction works reflect the context within which they were developed, this essay examines the complex treatment of time in this author’s epic novel as well as his short fiction. The non-linear treatment of time by Marxist utopian theorist Ernst Bloch (1885-1977 helps us to understand how Brossard’s complex

  19. Lenguaje, palabra, discurso en la enseñanza de Jacques Lacan. // Languaje, word, speech in Jacques Lacan`s teaching.

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    Marcela Ana Negro.

    2009-12-01

    Full Text Available This article is the result of the analysis of two Lacan’s statements in Seminar 3 in which he differentiates between language, word and speech. The results presented here intend to report that difference, by defining the structure and the rules of each aspect of the symbolic dimension. The author also tries to define the special features of the subject and the Other from the language, word and speech aspects. This research is limited to Lacan’s first contributions (1953-1958. // Este artículo surge como resultado de una investigación a partir de una frase de Lacan del Seminario 3 donde distingue lenguaje, palabra y discurso. El desarrollo que se expone aquí intenta dar cuenta de esa diferencia, situando la estructura y las leyes correspondientes a cada vertiente de la dimensión simbólica. También se intenta articular las particularidades que surgen en cuanto al sujeto y al Otro en cada una de ellas. El trabajo de investigación se circunscribe a los primeros años de la enseñanza de Jacques Lacan (1953-1958.

  20. Jean-Jacques Rousseau on Adult Education and Revolution. Paradigma of Radical, Pedagogical Thought. 2nd Revised Edition.

    Science.gov (United States)

    Dame, Frederick William

    This book explores Jean-Jacques Rousseau's educational philosophy, as expressed in his key works, and applies that philosophy to adult education and revolution. The titles and topics of the book's seven chapters are as follows: (1) "L'Invitation: Raison d'Etre" (prelude, statement, significance, the process, assumptions and limitations);…

  1. The Function of the Medieval in Jean-Jacques Rousseau's Nouvelle Heloise : A Rereading of the Abelard and Heloise Motif

    NARCIS (Netherlands)

    Montoya, Alicia C.

    2010-01-01

    Jean-Jacques Rousseau's critical rewriting in his Nouvelle H,lo

  2. Jean-Jacques Rousseau on Adult Education and Revolution. Paradigma of Radical, Pedagogical Thought. 2nd Revised Edition.

    Science.gov (United States)

    Dame, Frederick William

    This book explores Jean-Jacques Rousseau's educational philosophy, as expressed in his key works, and applies that philosophy to adult education and revolution. The titles and topics of the book's seven chapters are as follows: (1) "L'Invitation: Raison d'Etre" (prelude, statement, significance, the process, assumptions and limitations);…

  3. Art is going elsewhere: and politics has to catch it : an interview with Jacques Rancière

    NARCIS (Netherlands)

    Dasgupta, S.

    2008-01-01

    The reflections of the French philosopher JacquesRancière shift in between literature, film, pedagogy, historiography, proletarian history and philosophy. He came to prominence when he contributed to Althusser’s 'Lire lecapital' (1965) and, shortly after, published a fervent critique of Althusser -

  4. Jean-Jacques Rousseau on Adult Education and Revolution. Paradigma of Radical, Pedagogical Thought. 2nd Revised Edition.

    Science.gov (United States)

    Dame, Frederick William

    This book explores Jean-Jacques Rousseau's educational philosophy, as expressed in his key works, and applies that philosophy to adult education and revolution. The titles and topics of the book's seven chapters are as follows: (1) "L'Invitation: Raison d'Etre" (prelude, statement, significance, the process, assumptions and limitations); (2) "Le…

  5. Jacques Maurice, El anarquismo andaluz, una vez más

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    Rose Duroux

    2010-01-01

    Full Text Available Sous le double signe de l'Andalousie et de l'anarchismeL'anarchisme, « une fois de plus ». Le lecteur suppose, dès le titre, que l'étude de l'anarchisme fait toujours débat et que Jacques Maurice va re-parler de cet anarchisme qui lui tient à cœur depuis un ouvrage premier, toujours d'actualité, L'anarchisme espagnol (Paris-Montréal, Bordas, 1973, et sa thèse de doctorat d'État (1985, Recherches sur l'anarchisme rural en Andalousie de 1858 à 1936, une histoire sociale théoriquement exigeant...

  6. Jean-Jacques Rousseau and Sharatchandra Chattopadhyay on Love and Sex

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    Narasingha P. Sil

    2014-02-01

    Full Text Available The Bengali novelist Sharatchandra Chattopadhyay (1876-1938 of colonial India and the French philosophe of Enlightenment Europe Jean-Jacques Rousseau (1712-1778 stand poles apart from each other—temporally, territorially, and culturally. Although Sharatchandra is reputed to have been familiar with a number of romantic writers of England, he does not seem to be acquainted with any literati of Europe, especially of Enlightenment France. Nevertheless, as this article contends, the Bengali writer’s attitude to human sensuality and sentiment or, more precisely, to love, sex, and marriage, betrays an interesting similarity to that of the French author. An upshot of this comparatist exercise is that we gain a fresh outlook on both men’s views on human condition that blurs, as it were, the distinction between modern European and modernizing and Westernizing colonial Indian mentalité.

  7. Jean-Jacques Rousseau's copy of Albrecht von Haller's Historia stirpium indigenarum Helvetiae inchoata (1768).

    Science.gov (United States)

    Cook, A

    2003-04-01

    Jean-Jacques Rousseau sold his botanical texts to Daniel Malthus (father of Thomas Malthus) about 1775. Two of these are now in the Old Library, Jesus College, Cambridge, but all the rest have long been thought lost. However, a copy of Albrecht von Haller's Historia stirpium indigenarum Helvetiae inchoata (1768) in the Lindley Library, Royal Horticultural Society, London, bears Rousseau's name and seems to have been annotated by him. The volume contains the bookplate of Jane Dalton, a cousin to whom Malthus willed "all[his] Botanical Books in which the name of Rousseau is written". Haller was well-known to Rousseau, who while in exile in the Swiss Jura (1763-1765), studied under one of Haller's collaborators, Abraham Gagnebin. Rousseau cited Haller's entry 762 when describing a species of Seseli to the Duchess of Portland.

  8. Jacques Ellul, entre el pesimismo sociológico y la esperanza bíblica

    OpenAIRE

    Tijmes, Pieter

    2014-01-01

    Jacques Ellul era lo contrario de un intelectual profesional u orgánico. Jurista de formación, se movía en los terrenos de la sociología, de la historia, de la teología. Sin embargo, nunca ha pretendido ser filósofo. Al contrario, no dejaba de insistir en que no lo era. La paradoja es que es uno de los autores más citados por los miembros de la Society for Philosophy of Technology americana. Este es quizás el único círculo en que Ellul, filósofo a su pesar, es tomado en serio y leído como lo ...

  9. Pintura y Terror : Jacques-Louis David en 1793-1794

    OpenAIRE

    García Hernández, Miguel Ángel

    2016-01-01

    Entre 1793 y 1794, durante el llamado «Gran Terror», los retratos de los «mártires revolucionarios» de Jacques-Louis David han desarticulado las bases de la pintura de historia al eliminar la narración y el espacio de la perspectiva tal y como habían sido concebidos desde el Renacimiento. Este artículo indaga en este proceso a través del entramado político, social y religioso que se puso en marcha durante la República jacobina. Entre 1793 i 1794, durant l’anomenat «Gran Terror», els retrat...

  10. Jacques Duquesne, Carnets secrets de la guerre d’Algérie

    OpenAIRE

    MANCERON, Gilles

    2014-01-01

    Jeune journaliste, Jacques Duquesne a commencé sa carrière en couvrant la guerre d’Algérie pour le quotidien La Croix. Épreuve difficile, car sa perception des événements ne correspondait pas à la sensibilité de la majorité de ses lecteurs. Épreuve formatrice, car cela l’a conduit à affronter les questions morales et politiques essentielles posées par le métier de journaliste en temps de guerre. Mais cette épreuve a été comme reléguée par lui tout au long de sa vie active. Comme beaucoup des ...

  11. Social medicine in the interwar years. The case of Jacques Parisot (1882-1967).

    Science.gov (United States)

    Murard, Lion

    2008-01-01

    Hygiene, asserted the "Pasteurians", is "the very base of politics". Professor of preventive medicine at Nancy medical school, the phtisiologist Jacques Parisot well epitomized the style of a discipline that had soon shown interest for the avenues of action. Just as many other practical minds in Europe and elsewhere, he lamented the discrepancies between medical innovation and organizational change. However, as a French Professor medicine he had more latitude than his foreign colleagues to try bringing together the laboratory, medical education and the clinics. Chair of the Health Committee of the League of Nations from 1937 to the war, Parisot is an interesting case of these "Statesmen in disguise": to him social medicine, a science for action, was nothing but a vehicle to improve the Welfare of the community.

  12. Jacques Bidet, Marx et la Loi travail. Le corps biopolitique du Capital

    OpenAIRE

    Louli, Jonathan

    2016-01-01

    Jacques Bidet, philosophe et professeur émérite à l’université de Paris Ouest Nanterre La Défense, mène depuis de nombreuses années des recherches sur Marx et le marxisme et dirige notamment la revue Actuel Marx, qu’il a contribué à fonder. Le livre qu’il publie aujourd’hui s’inspire de précédents travaux et, contrairement à ce que suggère le titre, il n’est donc pas écrit en référence à la « loi travail ». Bidet cherche plutôt à présenter une introduction critique à la lecture du Capital, l’...

  13. Jacques Belle, L’opération Torch et la Tunisie

    OpenAIRE

    Schiavon, Max

    2012-01-01

    L’opération Torch et la Tunisie de Jacques Belle raconte essentiellement l’histoire de la Tunisie durant le second conflit mondial, en particulier de novembre 1942, date du débarquement américain à septembre 1943, lorsque Mussolini est renversé et que l’Italie s’apprête à abandonner la lutte. Découpé en 17 chapitres, le livre se lit facilement. Le rôle de la Tunisie dans la guerre, les enjeux, tout comme le bilan des forces en présence, sont relatés de façon didactique. L’opération Torch est ...

  14. La Thaïlande de A à Z, Jacques Bekaert

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    Jean Baffie

    2012-09-01

    Full Text Available Cet ouvrage, destiné à apporter des éclairages sur l’histoire, la politique, la culture de la Thaïlande, réunit de très nombreuses données. L’auteur, Jacques Bekaert, est un journaliste belge auteur de cinq livres sur le Cambodge et un sur le Viêt Nam. Je lis toujours avec intérêt les articles qu’il publie sur la situation cambodgienne dans le quotidien Bangkok Post. Comme il réside en Thaïlande depuis des années, il est compréhensible qu’un éditeur lui demande un ouvrage sur la Thaïlande. L’...

  15. Jacques Lacan vers le réel (1936-1962

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    Fréderic Pellion

    2009-03-01

    Full Text Available Davantage que celles de "symbolique" et d' "imaginaire", la construction par Jacques Lacan de sa catégorie du "réel" n'est pas allée sans difficultés et sans repentirs. C'est de ces difficultés, et de quelques étapes de leur position puis de leur résolution, dont il sera question ici; non sans espérer, au terme du parcours, pouvoir peut-être un peu mieux situer le rôle de cette catégorie dans la "métapsychologie" lacanienne - surtout si l'on admet que celle-ci n'est pas sans interréagir avec les métapsychologies voisines, en plus qu'avec de nombreux aspects du "dire" philosophique.

  16. Two Paths to Infinite Thought: Alain Badiou and Jacques Derrida on the Question of the Whole

    Directory of Open Access Journals (Sweden)

    Lynn Sebastian Purcel

    2012-05-01

    Full Text Available This essay defends an idea that is no longer fashionable: that there is a whole. The motivation for a defense of this notion has nothing to do with intellectual conservatism or a penchant for Hegel. Rather, what we hope to establish is a second path into what Alain Badiou has called the ‘Cantorian Revolution’. In order to open this path we undertake a three-fold task. First, we deconstruct Badiou’s onto-logical project by isolating the suppressed significance of Ernst Zermelo. This point allows us to recover a Cantorian possibility for addressing the infinite as an inconsistent whole. Second, we turn to work by the logician Graham Priest in order to remove the absurdity of discussing true contradictions. Finally, we return to Jacques Derrida’s early work on Husserl in order to chart a phenomenological path to an affirmation of an inconsistent whole. We close, then, with the implications for contemporary philosophy.

  17. Louis Jacques Thenard's chemistry courses at the College de France, 1804-1835.

    Science.gov (United States)

    García Belmar, Antonio; Bertomeu-Sánchez, José Ramón

    2010-03-01

    This article is concerned with the public courses and lecture demonstrations given by Louis Jacques Thenard at the College de France during the first decades of the nineteenth century. The expectations and needs of Thenard's auditors will be studied in order to understand the role played by chemistry courses at the College in the context of the growing and changing Parisian teaching market during the first third of the nineteenth century. The preparation and performance of lecture demonstrations was the main driving force of several major changes in the premises and the personnel associated with the chair of chemistry. Our analysis of the parallel process of expansion and functional differentiation of spaces and personnel will show the multiple interactions taking place between the research and teaching activities developed by Thenard and his team of assistants and students.

  18. Thaïlande contemporaine, Stéphane Dovert & Jacques Ivanoff (éds

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    Louise Pichard-Bertaux

    2011-09-01

    Full Text Available Le premier opus de Thaïlande contemporaine offrait aux chercheurs et amateurs éclairés une somme de travaux interdisciplinaires réunis en un volume substantiel et remarquablement intéressant. Dix ans plus tard, Stéphane Dovert et Jacques Ivanoff réitèrent l’exploit et publient bien plus qu’une réédition de l’ouvrage collectif de 2001. Les articles ont, pour la plupart, été mis à jour, voire même réécrits ; certains ont disparu au profit d’autres contributions. Ainsi que l’écrivent les éditeur...

  19. Cuerpo y Feminidad: "Goce Otro" de Jacques Lacan y "Devenir-Mujer" en Deleuze y Guattari

    Directory of Open Access Journals (Sweden)

    Francisco Conde Soto

    Full Text Available RESUMEN: Jacques Lacan introduce en su seminario XX Aún (1972-73 una distinción entre dos tipos de goce [jouissance]: un goce fálico o sexual propiamente masculino, y en el caso de la posición femenina, y complementario del anterior, un goce Otro o goce del cuerpo absolutamente particular de cada mujer. Deleuze y Guattari piensan la feminidad en Mil mesetas (1980 como un devenir-mujer consistente en la construcción de un "cuerpo sin órganos" singular y propio más allá del organismo que resulta de disciplinar familiar y socialmente este cuerpo. Este estudio pretende demostrar la convergencia de ambas propuestas al pensar la feminidad como una vivencia singular del propio cuerpo.

  20. XVI 'Jacques-Louis Lions' Spanish-French School on Numerical Simulation in Physics and Engineering

    CERN Document Server

    Roldán, Teo; Torrens, Juan

    2016-01-01

    This book presents lecture notes from the XVI ‘Jacques-Louis Lions’ Spanish-French School on Numerical Simulation in Physics and Engineering, held in Pamplona (Navarra, Spain) in September 2014. The subjects covered include: numerical analysis of isogeometric methods, convolution quadrature for wave simulations, mathematical methods in image processing and computer vision, modeling and optimization techniques in food processes, bio-processes and bio-systems, and GPU computing for numerical simulation. The book is highly recommended to graduate students in Engineering or Science who want to focus on numerical simulation, either as a research topic or in the field of industrial applications. It can also benefit senior researchers and technicians working in industry who are interested in the use of state-of-the-art numerical techniques in the fields addressed here. Moreover, the book can be used as a textbook for master courses in Mathematics, Physics, or Engineering.

  1. La propuesta política de Humanismo integral de Jacques Maritain

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    Genaro Giuseppe Curcio

    2015-01-01

    Full Text Available El artículo es un ensayo acerca de las concepciones filosóficas sostenidas por el filósofo francés Jacques Maritain en su famosa obra Humanismo Integral (1980. A partir de su concepto de “política de servicio”, e interpretando gran parte de su obra, se propone una interpretación de la política como una obra de responsabilidad del ser político. A través de la hermenéutica del concepto de lo político, el espacio y el tiempo, se afirma que el político para el filósofo francés, no es otro que aquél que se ocupa de las generaciones futuras, considerando como valores la “solidaridad” y el “amor” por los otros futuros.

  2. Consciousness eclipsed: Jacques Loeb, Ivan P. Pavlov, and the rise of reductionistic biology after 1900.

    Science.gov (United States)

    Greenspan, Ralph J; Baars, Bernard J

    2005-03-01

    The life sciences in the 20th century were guided to a large extent by a reductionist program seeking to explain biological phenomena in terms of physics and chemistry. Two scientists who figured prominently in the establishment and dissemination of this program were Jacques Loeb in biology and Ivan P. Pavlov in psychological behaviorism. While neither succeeded in accounting for higher mental functions in physical-chemical terms, both adopted positions that reduced the problem of consciousness to the level of reflexes and associations. The intellectual origins of this view and the impediment to the study of consciousness as an object of inquiry in its own right that it may have imposed on peers, students, and those who followed is explored.

  3. [Jean-Jacques Rosseau the vitalist. The moralization of medical hygiene between diet and ethical food].

    Science.gov (United States)

    Menin, Marco

    2012-01-01

    The historiographical prejudice that sees in Jean-Jacques Rousseau an implacable opponent of scientific knowledge has long prevented an objective evaluation of the important influence that medical thought exerted over his philosophy. The aim of this paper is to show not only Rousseau's familiarity with the most important expressions of eighteenth-century medical literature, but also his willingness to incorporate some medical suggestions in his philosophical and literary production. In the first part of this article, I try to show how Rousseau's sensibility theory presupposes precise medical ideals, related to Montpellier School of vitalism. In the second part, I stress how Rousseau's philosophy of alimentation (which has clear anthropological and political implications) can be regarded as a genuine application of an ambition typical of vitalism: to use medical hygiene, also and above all, for moral purpose.

  4. Le romanesque dans la trilogie d'Hortense de Jacques Roubaud

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    Alain Schaffner

    2014-07-01

    Full Text Available Les trois romans de Jacques Roubaud consacrés à la belle héroïne Hortense, publiés dans les années 1990, sont analysés à partir des critères d'Anne Souriau et d'Alain Schaeffer définissant la notion de « romanesque » (fréquence des extrêmes, prédominance de l’affectif, densité des événements, création d’un contre-modèle de la réalité. Si ces critères ne se révèlent que partiellement opératoires, c’est parce que les romans de Roubaud sont plutôt des « romans du romanesque » que des « romans romanesques ». La distance humoristique prise avec les modèles de la tradition y fait du romanesque un enjeu esthétique qui met en jeu le récit plutôt qu’il ne le met en cause. In this article, Jacques Roubaud’s trilogy of novels devoted to the beautiful heroine Hortense, published in the ’90s, is analyzed using Souriau and Schaeffer’s criteria defining the notion of the “romanesque” (frequency of extremes, predominance of affect, event density, creation of a countermodel of reality. If these criteria prove in fact to be only partially functional, it is because Roubaud’s novels are “novels about the novel” rather than “novelistic novels” in the traditional sense. The humoristic distance that Roubaud takes from traditional literary models transforms the novelistic nature of his texts into an aesthetic concern that puts the story itself into play rather than calling it into question.

  5. Abismos do reconhecimento: o legado sociofilosófico de Jean-Jacques Rousseau = Abysses of recognition: the sociophilosophical legacy of Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    Honneth, Axel

    2013-01-01

    Full Text Available O texto se ocupa com a questão da interpretação da obra de Jean-Jacques Rousseau, em particular com suas referências sobre a dependência constitutiva em relação aos outros. Vista negativamente na crítica da cultura, mas positivamente nos esboços de um contrato social, o lugar dessa dependência constitutiva da confirmação e estima por parte dos outros está vinculada ao significado dado ao “amor próprio” nos diferentes textos; mas ela abre a possibilidade de interpretar Rousseau como um teórico do reconhecimento. O autor acompanha Rousseau em seu desenvolvimento teórico até o ponto em que ele se tornou consciente das exigências de uma forma sociocontratual, igualitária do reconhecimento mútuo, para depois expor a enorme influência que a ideia bipolar de Rousseau a respeito do reconhecimento social exerceu sobre a teoria social da modernidade: em sua variante negativa, a profunda necessidade dos seres humanos de sobrepujar os respectivos cossujeitos no grau de estima social, reinterpretada por Kant como sendo a força motriz do progresso cultural e social, e em sua variante positiva, o respeito mútuo entre iguais, desenvolvido por Fichte e Hegel na direção de uma teoria do reconhecimento relacionada ao direito e à moralidade. No final, Honneth discute o ceticismo com que Rousseau sempre viu a dependência de outros contida no “amor próprio”, deixando sem solução definitiva a tensão entre a ideia estoica de uma independência pessoal de toda avaliação alheia e a ideia intersubjetivista de uma profunda dependência do outro. (Resumo do editor

  6. Euroopa taassünd pärast sõda / Jürgen Habermas, Jacques Derrida ; tõlk. Mati Sirkel

    Index Scriptorium Estoniae

    Habermas, Jürgen

    2003-01-01

    "Tuum-Euroopa" ideest. Euroopa peab heitma vaekausile oma kaalu rahvusvahelisel tasandil ja ÜRO raames, et tasakaalustada USA hegemoniaalset unilateralismi, tõdevad autorid. Vt. samas: Jacques Derrida. Miks ma alla kirjutasin?

  7. Euroopa taassünd pärast sõda / Jürgen Habermas, Jacques Derrida ; tõlk. Mati Sirkel

    Index Scriptorium Estoniae

    Habermas, Jürgen

    2003-01-01

    "Tuum-Euroopa" ideest. Euroopa peab heitma vaekausile oma kaalu rahvusvahelisel tasandil ja ÜRO raames, et tasakaalustada USA hegemoniaalset unilateralismi, tõdevad autorid. Vt. samas: Jacques Derrida. Miks ma alla kirjutasin?

  8. Wind-driven snow conditions control the occurrence of contemporary marginal mountain permafrost in the Chic-Choc Mountains, south-eastern Canada: a case study from Mont Jacques-Cartier

    Directory of Open Access Journals (Sweden)

    G. Davesne

    2017-06-01

    Full Text Available We present data on the distribution and thermophysical properties of snow collected sporadically over 4 decades along with recent data of ground surface temperature from Mont Jacques-Cartier (1268 m a.s.l., the highest summit in the Appalachians of south-eastern Canada. We demonstrate that the occurrence of contemporary permafrost is necessarily associated with a very thin and wind-packed winter snow cover which brings local azonal topo-climatic conditions on the dome-shaped summit. The aims of this study were (i to understand the snow distribution pattern and snow thermophysical properties on the Mont Jacques-Cartier summit and (ii to investigate the impact of snow on the spatial distribution of the ground surface temperature (GST using temperature sensors deployed over the summit. Results showed that above the local treeline, the summit is characterized by a snow cover typically less than 30 cm thick which is explained by the strong westerly winds interacting with the local surface roughness created by the physiography and surficial geomorphology of the site. The snowpack structure is fairly similar to that observed on windy Arctic tundra with a top dense wind slab (300 to 450 kg m−3 of high thermal conductivity, which facilitates heat transfer between the ground surface and the atmosphere. The mean annual ground surface temperature (MAGST below this thin and wind-packed snow cover was about −1 °C in 2013 and 2014, for the higher, exposed, blockfield-covered sector of the summit characterized by a sporadic herbaceous cover. In contrast, for the gentle slopes covered with stunted spruce (krummholz, and for the steep leeward slope to the south-east of the summit, the MAGST was around 3 °C in 2013 and 2014. The study concludes that the permafrost on Mont Jacques-Cartier, most widely in the Chic-Choc Mountains and by extension in the southern highest summits of the Appalachians, is therefore likely limited to the barren wind

  9. Sobre os limites da interpretação. O debate entre Umberto Eco e Jacques Derrida

    Directory of Open Access Journals (Sweden)

    Eduardo Ramalho Rabenhorst

    2002-01-01

    Full Text Available A proposta do presente trabalho é examinar o debate sobre os limites da atividade interpretativa, tomando por base as propostas do desconstrucionismo de Jacques Derrida e da semiologia de Umberto Eco. Tentaremos mostrar que as discordâncias entre as duas perspectivas poderiam ser suficientemente aplainadas a partir da identificação de um ponto de convergência fornecido pelas idéias de contexto e de compreensão intersubjetiva.

  10. La Distracción de Sí. Jacques Derrida y la Auto-Afección

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    Cristóbal Durán

    2015-08-01

    Full Text Available En este texto buscamos hacer inteligible el lugar y los derroteros que sigue el concepto de auto-afección en el pensamiento de Jacques Derrida. Dicho concepto se desarrolla a partir de una interpretación de Kant y el problema de la metafísica, de Heidegger. En la elaboración del concepto en Derrida se enfatiza el momento de distancia en el que el sí-mismo no puede reducir al otro, sino que tiene que hacer patente la demora en su propia formación. Esto implicaría considerar que la mismidad que se constituye en la auto-afección no puede ser separada de una hetero-afección, mediante la cual el otro no puede ser objetivado y no es otra cosa que el sí-mismo en su alteración. La forma de dicho espaciamiento que produce la alteración se pone a prueba en la voz y en la estructura del “oírse-hablar”, la que se revela como un espacio polifónico irreductible a una unidad, donde la auto-afección se desune de sí para retornar como aquello que no espera y como aquello que no puede replegarse en un lugar de reunión.

  11. Entretiens Jacques Cordonier, Alain Jacquesson, Jean-Frédéric Jauslin, Hubert Villard

    CERN Document Server

    2016-01-01

    Beaucoup d’usages sont tellement ancrés dans nos vies que l’on ne s’interroge guère sur la manière dont ils sont advenus. Les réseaux informatiques, les échanges qu’ils génèrent, semblent aujourd’hui aussi « naturels » aux digital natives que la conversation à distance par téléphones fixes allait de soi il y a cinquante ans. Pour autant que l’on se pose la question, il est difficile d’imaginer qu’un domaine institutionnel, celui des bibliothèques en l’occurrence, ait joué un rôle important dans l’avènement et l’expansion de ces réseaux, au plan suisse voire international, et, par voie de conséquence, dans le développement et la normalisation des échanges intercantonaux. Cela est néanmoins une réalité. Ce livre d’entretiens fait apparaître en quoi Jacques Cordonier, Alain Jacquesson, Jean-Frédéric Jauslin et Hubert Villard, directeurs romands parmi les plus marquants de la fin du 20 e siècle, chacun avec son regard et sa tessiture, dans son canton ou à ...

  12. 拉康与后现代文化批评%Jacques Lacan and Postmodern Cricticism

    Institute of Scientific and Technical Information of China (English)

    黄汉平

    2005-01-01

    雅克·拉康(Jacques Lacan,1901—1981)是自弗洛伊德以后最具影响力的法国精神分析学家,20世纪有国际影响的理论家、思想家。在走进拉康的世界之前,首先要了解拉康理论产生的背景及其思想渊源,否则很可能会不得其门而入。追踪拉康的学术历程,描画其思想来源的地图,或许是一条接近拉康的“捷径”。在本文第一章,首先对拉康长达半个多世纪的学术生涯做一个比较符合实际的分期,然后分别探讨拉康理论的主要思想渊源:黑格尔的哲学思想、弗洛伊德的精神分析学、索绪尔的语言学和列维-斯特劳斯的结构人类学。

  13. Duality of the Sign Deconstructed. On the Basis of the Works by Jacques Derrida

    Directory of Open Access Journals (Sweden)

    Paulina Kłos

    2014-11-01

    Full Text Available This paper is an inquiry into some parts of the project of deconstruction by Jacques Derrida, who deconstructs but also and before all demystifies the traditional metaphysical language, language that is “larded with” dualistic concepts. The most spectacular dualisms in philosophy, which are taken into consideration by Derrida, are for instance: Plato’s theory of Ideas or Kantian Thing-In-Itself and its phenomena. All they belong to the tradition of logocentrism, which, with its consequences in the form of metaphysics of presence, appears in the writings by Derrida as the systematic desire for the transcendental signified; the final ground, the foundation of all signs. Derrida proposes something contrary to the dualisms of logocentrism: he treats the presentation of the thing itself as the re – presentation, as the image, as the double and in result he endorses the substitution of the presence and the simplicity of the intuitive evidence with the multiplication of meaning. In paper is examined also the line of argumentation where Derrida contradicts the main assumptions about the character of the sign made by Ferdinand de Saussure. The objective is to show how is it in Derrida’s writings that “the manifestation of the thing does not reveal a presence of this thing, but [that] it makes it another sign.”

  14. Do vazio ao objeto: das ding e a sublimação em Jacques Lacan

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    Ariana Lucero

    2013-04-01

    Full Text Available Pretende-se esclarecer a formulação lacaniana de que "a sublimação eleva um objeto à dignidade da Coisa". A hipótese de que das Ding, ou a Coisa, é o que permanece de irrepresentável na experiência de satisfação, o que padece do significante e pode ser remetido à pura falta, ao vazio, leva-nos a pensar a sublimação como a construção de um objeto que explicite essa opacidade. Este percurso argumentativo será ilustrado por análises da literatura de amor cortês e de algumas obras de arte referidas pelo próprio Lacan em suas considerações sobre a sublimação.From emptiness to the object: das Ding and the sublimation in Jacques Lacan. The aim is to clarify the Lacanian formulation that "sublimation raises an object to the dignity of the Thing". The hypothesis according to which das Ding, or the Thing, is what remains irrepresentable in the experience of satisfaction, what suffers from the signifier and can be related to the pure lack is developed and leads us to think sublimation as the construction of an object that express such opacity. To this end, examples from the courtly love literature and from works of art referred by Lacan in his approach of sublimation will be analyzed.

  15. The aesthetic ear: sound art, Jacques Rancière and the politics of listening

    Directory of Open Access Journals (Sweden)

    Matthew Mullane

    2010-05-01

    Full Text Available If we are to value “sound art” as a worthwhile creative form and a legitimate fragment in the history of art, we must move away from debates of nomenclature and forge ahead to critically examine sound's aesthetic and political potential. Approaching “sound art” as a problematic and unnecessary term, what follows is a simultaneous survey and refutation of recent publications on the topic and an assertion of sound's aesthetics via the theory of French philosopher, Jacques Rancière. Heard through the writings of Rancière, contemporary work in sound breaks out of its exclusive sphere and reveals itself as a vivid commentary on the everyday and a keen activator of “heterogeneous” political elements. Framed by an overview of the details and import of Rancière's recently translated collections is an analysis of four active artists whose work engages the “aesthetic ear” and proves itself to be more than merely sound-for-sound's sake.

  16. QUAL VIA PARA A ANÁLISE DO DISCURSO?: UMA ENTREVISTA COM JEAN-JACQUES COURTINE

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    João KOGAWA

    2015-06-01

    Full Text Available O percurso de Jean-Jacques Courtine no campo da Análise do Discurso de linha francesa bem como as contribuições do autor para a teoria já são bastante conhecidos pelos estudiosos do domínio. Como é comum aos grandes pensadores, o pensamento desse estudioso das ciências humanas não permaneceu o mesmo, nem tampouco os espaços pelos quais ele circulou academicamente (França, EUA e, atualmente, Nova Zelândia. De Análise do discurso político: o discurso comunista endereçado aos cristãos à História da Virilidade, muitas problemáticas foram enfrentadas por Courtine. Nesta entrevista inédita, o autor nos fala sobre sua história no campo da Análise do Discurso de linha francesa; sobre os anseios, expectativas e perspectivas comuns aos anos 1960 e que influenciaram a Análise do Discurso; sobre aspectos de sua relação com Michel Pêcheux e os caminhos que seus trabalhos tomaram após os anos 1980. Tudo isso nos leva a refletir sobre a complexidade, a importância e a atualidade do discurso como objeto de investigação.

  17. Vom Kreisverkehr zum Karussell: Nicht-Orte als komische Spielräume bei Jacques Tati

    Directory of Open Access Journals (Sweden)

    Wolfram Nitsch

    2016-03-01

    Full Text Available Marc Augés Begriff der ‹Nicht-Orte› hat in verschiedenen Disziplinen Karriere gemacht und dabei eine weitreichende Schattierung erfahren, teils durch den Autor selbst, teils durch kritische Leser. Nuanciert wurde er vor allem in zeitlicher, historischer und perspektivischer Hinsicht: zeitlich durch die Unterscheidung zwischen ‹heißen› und ‹kalten› Orten, die durch Zufuhr oder Verlust von Energie ineinander übergehen; histo­risch durch Fallstudien zu Orten wie der Pariser Metro, die sich immer mehr von einem ‹Erinne­rungs­ort› zu einem ‹Nicht-Ort› wandelt; perspektivisch dadurch, dass man verschiedene Blicke auf denselben Transitraum und verschiedene Praktiken seiner Nutzung einander gegenüberstellt. Solche Schattierungen treten besonders hervor, wo ‹Nicht-Orte› als filmische Schauplätze fungieren. Dies ist vielfach im neueren französi­schen Kino, aber auch schon bei Jacques Tati der Fall, besonders in seinem visionären Film Playtime (1967. Dort, so meine These, werden hyperbolisch zugespitzte ‹Nicht-Orte› nicht mehr wie noch in Mon oncle persönlicheren ‹Gegenorten› gegenübergestellt, sondern ihrerseits in komische Spielräume verwandelt. Ein schlagendes Beispiel dafür bietet der am Filmende gezeigte Kreisverkehr, eigentlich ein urbaner Durchgangsraum par excellence, der hier jedoch Züge eines Karussells annimmt und somit auf die Herkunft des Kinos aus der populären Heterotopie des Jahrmarkts zurückverweist.

  18. O homem depravado e a possibilidade do bem na filosofia política de Jean-Jacques Rousseau

    OpenAIRE

    SOUZA, Júnio Cézar da Rocha

    2012-01-01

    O presente trabalho procura trazer uma discussão sobre o pensamento de Rousseau acerca da possibilidade do agir bem na sociedade. O filósofo genebrino, para tratar de tal possibilidade, arrazoa prioritariamente sobre a condição primitiva do homem e a degeneração desta com o advento da sociedade. Lançar-nos-emos sobre algumas obras de Jean-Jacques Rousseau para discutirmos o trânsito que vai do homem selvagem, passando por sua corrupção até uma proposta redentivo-política por me...

  19. Publier sous l'Occupation I. Autour du cas de Jacques Feldbau et de l'Acad\\'emie des sciences

    CERN Document Server

    Audin, Michèle

    2007-01-01

    This is an article on mathematical publishing during the German occupation of France. Looking at the cases of four of them and especially at the case of Jacques Feldbau (one of the founders of the theory of fibre bundles), we investigate the way censorship struck the French mathematicians who declared jewish by the Statut des juifs of october 1940, and the strategies these mathematicians then developed. The way the Vichy laws have been discussed and applied at the Acad\\'emie des sciences is investigated.

  20. Emancipating subjects in science education: taking a lesson from Patti Lather and Jacques Rancière

    Science.gov (United States)

    Bazzul, Jesse

    2013-03-01

    This paper extends the conversation started by Patti Lather in her forum response to "Neoliberal ideology, global capitalism, and science education: engaging the question of subjectivity", in terms of engaging the thought of Jacques Rancière. Rancière can offer (science) educators a more definitive example of (possible) emancipatory political subjectivities. His notion of radical equality can also aid in developing new pedagogical spaces in science education. This latter point is taken up in the concluding sections of this short essay.

  1. Uma discussão sobre a angústia em Jacques Lacan: um contraponto com Freud A discussion about the anxiety in Jacques Lacan: an opposition with Freud

    Directory of Open Access Journals (Sweden)

    Pedro Teixeira Castilho

    2007-12-01

    Full Text Available Em um primeiro momento este trabalho elucida a concepção de angústia no Seminário Livro 10: A angústia de Jacques Lacan. Depois de tal percurso, busca-se comparar a noção da angústia como um afeto que não é sem objeto com a leitura freudiana de tal conceito. Finalmente, demonstra-se que é justamente esta concepção lacaniana de angústia que permite encontrar a noção de gozo e de desejo no objeto da angústia. As coordenadas para articular o desejo e o gozo convergem para a transmissão de gozo sendo anterior ao significante. Para demonstrar tal hipótese o autor propõe uma releitura do caso Hans de Freud.At first this work will show the conception of anxiety in the Seminary book 10: The anxiety written by Jacques Lacan. Secondly, it will place the idea of anxiety as an affection that is without object opposing freudian idea of anxiety. Finally, will point out the lacanian conception of anxiety offers an interpretation of the idea of beyond pleasure and desire presented in the anxiety's object. The coordination to manipulate de desire and the pleasure will converge to the transmission of the pleasure before the word. This new interpretation brings us to a new reading of the freudian interpretation of the Hans' case.

  2. PARADOXURILE CONCEPŢIEI POLITICE ÎN OPERA LUI JEAN-JACQUES ROUSSEAU

    Directory of Open Access Journals (Sweden)

    Alexandru MAZILU

    2015-12-01

    Full Text Available Ideile lui Rousseau au avut un impact major asupra societăţii la sfârşitul sec. al XVIII-lea şi pe parcursul întregii perioade a sec. al XIX-lea. Aceste idei au imprimat un suflu modern cugetului său, fiind considerat şi un ideologist politic, o voce puternică a Revoluţiei Franceze şi un pioner al curentului romantic. În legătură cu domeniul nostru de studiu, paradoxurile concepţiei politice ale lui Rousseau se referă la contradicţia dintre aspiraţiile modernităţii şi criticile violente ale progresului social. El pune accentul pe contradicţia dintre încrede-rea deplină în ,,contractul social”, ca pattern cultural şi lipsa de încredere în ,,educaţia socială”. Unicul mod de a depăşi aceste contradicţii este abordarea noului model al filosofiei educaţiei bazat pe reforme radicale pentru a facilita autodezvoltarea individului.   THE PARADOXES OF POLITICAL CONCEPTION IN THE WORK OF JEAN-JACQUES ROUSSEAUHis ideas have a big impact on the society at the end of the 18th century and the whole 19th century period. These ideas transform his spirit into a modern one, as well as a political ideologist, main voice of the French Revolution and pioneer of the Romantic Movement. Related to our article subject, Rousseau's political conceptual paradoxes refer to the contradiction between moderni-ty aspiration and the violent critic of the social progress. He emphasizes the contradiction between full trust of the "social contract", as a cultural pattern and the distrust of the "social education." The only way to leave the contradictions behind is his new education philosophy pattern based on a radical reform in order for the individual to develop himself.

  3. WE-A-207-00: In Memoriam of Jacques Ovadia - Reinvigorating Scientific Excellence: Electron Beam Therapy - Past, Present and Future

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-06-15

    The Medical Physics community lost one of its early pioneers in radiation oncology physics, Jacques Ovadia, who passed away in April of 2014 at the age of 90. Jacques received his Ph.D. in Nuclear Physics from the University of Illinois at Urbana in 1951. Subsequently, under the guidance of John Laughlin, he was introduced to the field of Medical Physics. When John moved to Memorial Sloan Kettering, Jacques followed him. There he gained clinical experience and expertise in the then cutting-edge field of high energy electron beam therapy. In 1956, Jacques joined Dr. Erich Uhlmann at Michael Reese Hospital in Chicago where one of the country’s first high energy medical linear accelerators had just been installed. During his 35 year tenure, Dr. Ovadia built a strong Medical Physics department that merged in 1984 with that of the University of Chicago. Jacques pioneered the use of high energy electron beams to treat deep seated tumors, multiple-field chest wall irradiation with variable electron energies, and even anticipated the current interest in high energy electron beam grid-therapy. At an early stage, he introduced a simulator, computerized treatment planning and in-house developed record and verify software. He retired in 1990 as Professor emeritus in Radiation and Cellular Biology at the University of Chicago. Dr. Ovadia was an early and strong supporter of AAPM. He was present at the Chicago ROMPS meeting where the decision was made to form an independent professional society for medical physics. He served as AAPM president in 1976. Jacques Ovadia is survived by his wife of 58 years, Florence, their daughter Corinne Graefe and son Marc Ovadia, MD, as well as four grandchildren and one great-grandchild. Jacques’ dynamic and ever enthusiastic personality inspired all who collaborated with him. He will be greatly missed.

  4. “Le plat pays” (Jacques Brel poëties besing in Afrikaans – aantekeninge oor ikonisiteit in die oorspronklike en vertaalde chansontekste

    Directory of Open Access Journals (Sweden)

    B. Odendaal

    2009-07-01

    Full Text Available “Le plat pays” (Jacques Brel poetically praised in Afrikaans – notes on iconicity in the original and translated chanson texts The authors of this article translated the well-known chanson about Flanders, “Le plat pays”, into Afrikaans as part of an extensive and ongoing Jacques Brel translation project initiated in 2005. In this analysis of both the original and translated “Le plat pays” lyrics, the marked poetic qualities of Brel’s chanson are laid bare, as are some semantic differences – and the implications for the analysis thereof – between source (original and target (translated texts.

  5. O laboratório de estudo do movimento e o percurso de formação de Jacques Lecoq

    OpenAIRE

    Scheffler, Ismael

    2013-01-01

    A presente pesquisa tem como foco o Laboratório de Estudo do Movimento (LEM), ligado à Escola Internacional de Teatro Jacques Lecoq, em Paris, França. Como forma de identificar fundamentos do LEM, é proposto um estudo histórico do percurso de formação de Jacques Lecoq, observando os contextos pedagógicos e artísticos em que esteve inserido que foram determinantes para a elaboração de sua pedagogia. São examinados diferentes períodos: a formação, na Escola do Polo de Bagatelle, como monitor de...

  6. Da ideia de infância em Jean-Jacques Rousseau ou do "sono da razão"

    OpenAIRE

    Grumiché, Mônica Cristina Dutra

    2012-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciencias da Educação. Programa de Pós-Graduação em Educação Os pensamentos expostos no século XVIII pelo genebrino Jean-Jacques Rousseau influenciaram de maneira decisiva a forma como o Ocidente passou a perceber a infância. Este autor provocou uma verdadeira divisão de águas ao publicar Emílio ou Da Educação (1762). Com este feito, mais que balançar os alicerces educacionais da época, ele delega à criança um lugar ...

  7. POST-STRUCTURAL RELATIONAL ETHICS OF TEACHER-STUDENT: A THEORETICAL ANALYSIS OF JACQUES DERRIDA AND LUCE IRIGARAY

    Directory of Open Access Journals (Sweden)

    Soo Bin Jang

    2016-04-01

    Full Text Available This paper explores the ethics of difference and becomingness as the foundation of teacherstudent relationship in contemporary school context. Based on the conception of difference of the French post-structural philosopher, Jacques Derrida, and the Belgian psychoanalytic thinker and feminist, Luce Irigaray, I suggest the relational ethics, which does not efface each student’s uniqueness as a mean to arrive at more inclusive and potentiality-embracing education practice. I problematize the binary discursive structure within the Western philosophical tradition and the resulting closure of potentiality in education. In order to overcome the closure of potentiality, I reviewed the deconstructive strategies of Derrida and Irigaray by examining how they conceptualized difference and the essence of being. Based on their theory, I suggest that teacher and student relationship need to embrace post-structural relational ethics. I conclude by posing the idea of educative space as dwelling for difference and becomingness.

  8. Jacques Roubaud, piéton de Paris - échantillons de mémoire urbaine

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    Christophe Reig

    2008-01-01

    Full Text Available Jacques Roubaud sillonne depuis plus de cinquante ans le labyrinthe parisien en forme d’escargot. La prose de mémoire du Grand Incendie de Londres, les poèmes de La Forme d’une ville change plus vite, hélas, que le cœur des humains… chantent une capitale tour à tour honnie et acclimatée, un Paris pluriel qui suscite le pari d’un art poétique prouvant le mouvement en marchant, sans faire l’économie du rythme. Après Baudelaire, Apollinaire, Queneau et bien d’autres encore, Roubaud court et recourt les rues de Paris, en quête de lui-même, planifiant dans la Capitale autant de parcours de mémoire que de trajets poétiques.

  9. Witnessing Fukushima Secondhand: Collage, Archive and Travelling Memory in Jacques Ristorcelli’s Les Écrans

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    Benoît Crucifix

    2016-02-01

    Full Text Available Cultural memory in comics studies mostly seems to revolve around nonfictional graphic novels tackling major historical events. Drawing on recent trends in cultural memory studies, this paper focuses on Jacques Ristorcelli‘s 'Les Écrans' (2014 as an experimental counterpoint where memory is animated by the author’s use of collage. Delving into an ‘archive’ of heterogeneous elements, 'Les Écrans' borrows from old war comics in a way that reflexively constructs a discourse on the past of the medium and its memory. Through the analysis of Ristorcelli’s book, this paper highlights how collage can function in comics as a work of memory that reaches back to appropriative practices common to both readers and fine artists.  

  10. Planning in the Face of Democracy. Mit Jacques Rancière über Raumplanung und Demokratie nachdenken

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    Till Rosemann

    2013-12-01

    Full Text Available Im Rahmen vieler städtischer Planungskonflikte werden derzeit Funktionsweisen der liberalen Demokratie und ihrer Institutionen kritisiert. In meinem Text wird die Frage nach dem eigentlich Demokratischen von Raumproduktion und Stadtplanung gestellt und anhand der demokratietheoretischen Ideen Jacques Rancières diskutiert. Dieser sieht ‚Demokratie’ als den Moment, in dem die bestehende Ordnung durch einen Konflikt gestört und verhandelbar wird. Ich diskutiere einige zentrale Konzepte dieser politischen Theorie (la police, Demokratie und Postdemokratie raumtheoretisch und möchte sie damit für die Stadtforschung nutzbar machen. Dabei komme ich zu dem Ergebnis, dass aus einer radikaldemokratischen Perspektive liberaldemokratische (Stadt-Planung grundsätzlich nicht als Teil von Demokratie, sondern als postdemokratisch zu verstehen ist. Mit der Frage nach einer demokratiebewussten Planung überdenke ich in meinem Beitrag schließlich, wie die Rolle von Planung im Angesicht eines radikaldemokratischen Demokratiebegriffes normativ gedacht werden kann.

  11. Muerte y transfiguración de Jean-Jacques Rousseau, filósofo y músico

    OpenAIRE

    2008-01-01

    Con frecuencia se olvida, cuando no se ignora, que Jean-Jacques Rousseau fue teórico de la música y músico. Sus escritos teórico-especulativos sobre música fueron los que le permitieron en una primera etapa darse a conocer y establecer los primeros lazos de amistad con Diderot y D'Alembert, que le requirieron en 1749, cuando ya había publicado la Disertación sobre la música moderna (1743), su primer libro, para que escribiera los artículos de música para la Encyclopédie. Contribuyó con más de...

  12. L’affaire de la Religieuse de Rivette (1965-1967 “The Nun”, a film by Jacques Rivette

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    Sabine Rousseau

    2012-06-01

    Full Text Available Suzanne Simonin, la religieuse de Diderot, film de Jacques Rivette, réalisateur lié aux Cahiers du cinéma et à la Nouvelle Vague, a été censuré par le pouvoir gaulliste en 1966. Quel est le rôle de l’Eglise catholique dans cette interdiction ? A l’intérieur de l’institution, les avis sont partagés. Le père Jean Pihan et Pierre Goursat de l’Office catholique du cinéma, de la radio et la télévision, ont œuvré à cette interdiction en mobilisant les religieuses de l’Union des supérieures majeures. Pour eux, la défense de la morale est une priorité absolue. Mais d’autres chrétiens comme Marc Oraison et Françoise Vandermeersch estiment au contraire que la censure est inutile et que les films doivent être appréciés pour leur valeur esthétique.Suzanne Simonin, la religieuse de Diderot, a film byJacques Rivette, a director connected with LaNouvelle Vague and Les cahiers du cinéma, was censored in 1966 under de Gaulle's presidency. What role did the CatholicChurch play in this decision? Among Christians, there were two different attitudes. Father Jean Pihan and Pierre Goursat from the Office catholique du cinéma, de la radio et de la télévision, rallied the nuns from the Union des supérieures majeures against the film. According to them, morality had to be saved. On the contrary, other Christians, such as Marc Oraison and Françoise Vandermeersch, thought that censorship was useless and that films must be appreciated for their aesthetic qualities.

  13. Dal carnalis concubitus all’heretica pravitate. Sesso, matrimonio ed eresia nel tribunale di Jacques Fournier (1318-1325

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    Irene Bueno

    2009-07-01

    Full Text Available Amore, sessualità e matrimonio sono tematiche ricorrenti nei documenti inquisitoriali due-trecenteschi ed entrano con forza nel registro di Jacques Fournier, vescovo-inquisitore di Pamiers (1318-1325. Il significato di questi racconti non si può comprendere senza chiarire quale interesse essi rivestissero agli occhi dell’autorità ecclesiastica: i rapporti adulterini, incestuosi, omosessuali di imputati e imputate sono in effetti mediati dalla figura di Fournier nell’ambito di una corte che sovrappone competenze vescovili e inquisitoriali. Collegando condotte ed affermazioni licenziose alle posizioni antimatrimoniali dei catari, il vescovo stabilisce in sede processuale un nesso fra carnalis concubitus extraconiugale ed heretica pravitate. Ogni trasgressione allo spazio sacro del matrimonio diventa indizio di eresia e contribuisce a disegnare un ritratto dissoluto e vizioso di eretici ed eretiche, funzionale al successo e alla popolarità della repressione.Love, sex, and marriage are recurring themes in inquisition records of the thirteenth and fourteenth centuries, and especially in the register of Jacques Fournier, bishop-inquisitor of Pamiers from 1318 to 1325. The significance of these confessions cannot be  understood without indicating the ecclesiastical authority’s interest: adultery, incest and homosexual relations of the accused are in fact mediated by Fournier within a court that superimposes episcopal and inquisitorial competences. Linking licentious conducts and libertine statements to the anti-matrimonial tenets of the Cathars, the bishop establishes, during the trial, a connection between sexual sin and heretical crime. Any transgression of the sacred space of marriage is understood to be an indication sign of heresy and contributes to depict a dissolute and vicious portrait of the heretical believers, which is ultimately functional to the success and popularity of repression.

  14. ROUBAUD, Jacques. Brasil, França e osAnimais de todo o mundo. Cosac Naify, 2006

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    Júlio Abreu

    2009-12-01

    Full Text Available RESUMO: Os animais de todo mundo (Cosac Naify, 2006, livro de poemas do francês Jacques Roubaud, foi traduzido para o português por Paula Glenadel e Marcus Siscar. Além de ser considerado um poeta importante em sua língua, Roubaud é também matemático e fez parte, na década de 60, do grupo experimental OuLiPo – Ouvroir de la Littérature Potentiel, algo como Oficina de Literatura Potencial, ao qual pertenciam matemáticos e escritores como Raymond Queneau, autor de Zazie no metrô (Cosac Naify, 2009, traduzido por Paulo Werneck.  Roubaud teve outro livro de poemas traduzido no Brasil, Algo preto (Perspectiva, 2005, com tradução de Inês Oseki-Dépré. PALAVRAS-CHAVE: Educação; ensino-aprendizagem; PoemaABSTRACT:The animals of the world (COSAC Naify, 2006, book of poems of the French Jacques Roubaud, was translated into Portuguese by Paula Glenadel and Marcus Siscar. In addition to being considered an important poet in his language, Roubaud is also a mathematician and was part, in the 60s, the experimental group OuLiPo - Ouvroir de la Littérature Potentiel, something like Potential Literature Workshop, which belonged mathematicians and writers like Raymond Queneau, author of Zazie in the metro (COSAC Naify, 2009, translated by Paulo Werneck. Roubaud had another book of poems translated in Brazil, something black (Perspective, 2005, translated by Agnes Oseki-DEPRE. KEYWORDS: Education; teaching and learning; poemRecebido:12/10/2009    Aceito: 17/12/2009

  15. Entre o dizer e o escrito: corpo e linguagem no ensino de Jacques Lacan/Between saying and the writing: body and language in the teaching of Jacques Lacan

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    José Guillermo Milán-Ramos

    2007-01-01

    Full Text Available No presente trabalho, pretendo mostrar o estatuto do dizer e do escrito no ensino do psicanalista Jacques Lacan. Lacan realizou, ao longo de 26 anos ininterruptos, atividades de ensino em regime de seminário; ele mesmo realizou a recopilação de seus textos fundamentais, lançados em 1966 sob o título: Escritos . Sabe-se também que um componente fundamental da sua doutrina é sua teoria sobre o estatuto do escrito na transmissão em psicanálise. Ao longo de seu ensino, também se preocupou por definir o estatuto do dizer. O dizer e o escrito aparecem enlaçados no ensino de Lacan em uma relação de temporalidade subjetiva, na qual a função essencial do dizer é a subjetivação do escrito, e isso se produz num tempo de espera no qual o corpo se vê comprometido pela própria inscrição da teoria no corpo (castração. In the present work, I intend to show the saying and the writing statute in the teaching of psychoanalyst Jacques Lacan. Lacan carried throughout 26 years uninterrupted activities of teaching into the seminary regimen; he himself made the compilation of his basic texts, launched in 1966 under the heading: Writings. We also know that a basic component of his teaching is its theory on the writing statute in the psychoanalysis transmission. Throughout his teaching, he was also worried about defining the saying statute. Saying and the writing appear enlaced in the teaching of Lacan in a relation of subjective temporality, in which the essential function of saying (theory is the subjectivation of the theoretical writing, and it is produced in an open assembly time in which the body itself is engaged for the proper inscription of the theory in the body (castration.

  16. Lühike panegüürika Lauri Leesist : temale pühendatud näituse avamise puhul Eesti Rahvusraamatukogus 18. jaanuaril 2002 / Jean-Jacques Subrenat

    Index Scriptorium Estoniae

    Subrenat, Jean-Jacques

    2002-01-01

    Prantsuse suursaadiku Eestis Jean-Jacques Subrenat sõnavõtt Rahvusraamatukogu humanitaarteaduste saalis ja Prantsuse saali galeriis näituse "Lauri Leesi kui prantsuse kultuuri ja keele vahendaja Eestis" avamise puhul

  17. CERN 50th Anniversary Official Celebration : welcome by CERN Director General Robert Aymar to French President Jacques Chirac, to King of Spain Juan Carlos and to President of the Swiss Confederation Joseph Deiss

    CERN Multimedia

    Patrice Loiez; Michel Blanc

    2004-01-01

    CERN 50th Anniversary Official Celebration : welcome by CERN Director General Robert Aymar to French President Jacques Chirac, to King of Spain Juan Carlos and to President of the Swiss Confederation Joseph Deiss

  18. Lühike panegüürika Lauri Leesist : temale pühendatud näituse avamise puhul Eesti Rahvusraamatukogus 18. jaanuaril 2002 / Jean-Jacques Subrenat

    Index Scriptorium Estoniae

    Subrenat, Jean-Jacques

    2002-01-01

    Prantsuse suursaadiku Eestis Jean-Jacques Subrenat sõnavõtt Rahvusraamatukogu humanitaarteaduste saalis ja Prantsuse saali galeriis näituse "Lauri Leesi kui prantsuse kultuuri ja keele vahendaja Eestis" avamise puhul

  19. La antropología de Jacques Maritain: problemas y virtualidades de la distinción individuo - persona

    Directory of Open Access Journals (Sweden)

    López-Casquete de Prado, Manuel

    2014-10-01

    Full Text Available Modern academic thinking in fields as diverse as economics, sociology, bioethics, law or politics frequently calls for a reconfiguration of our public institutions from a more humanising anthropological perspective to make them more conducive to people’s happiness. Among the approaches used to focus on this demand, the Thomist distinction between the individual and the persona has come to the fore. One of the most systematic and enlightening theories in this regard is that of French philosopher Jacques Maritain. In this paper we analyse his anthropological approach to conclude that, with positive and negative aspects, it may be of great interest approach to deepen this social debate and so help develop a new anthropological theory more geared towards people and their goals.Una de las reivindicaciones más repetidas en la actual reflexión académica en ámbitos tan dispares como la economía, la sociología, la bioética, el derecho o la política, plantea la necesidad de reconfigurar nuestras instituciones desde una antropología más humanizadora y, por tanto, más orientada a posibilitar la felicidad de la población. Entre las distintas aproximaciones teóricas utilizadas para concretar esta reivindicación, cada vez cobra más fuerza la que pretende recuperar y actualizar la clásica distinción tomista entre individuo y persona. Una de las formulaciones más sistemáticas y clarificadoras a este respecto es la ofrecida por el filósofo francés Jacques Maritain. En este artículo se realiza un análisis crítico de su planteamiento antropológico y se concluye que, con luces y sombras, el sistema de Maritain puede ser de gran interés para profundizar en este debate social y contribuir así a reelaborar nuestras bases antropológicas de modo que podamos alumbrar una sociedad a la medida de la persona y sus fines.

  20. LA METÁFORA DEL LAZO SOCIAL EN JEAN-JACQUES ROUSSEAU Y ÉMILE DURKHEIM

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    Daniel Alvaro

    2017-01-01

    Full Text Available Este artículo es un aporte teórico para la comprensión de la metáfora del lazo social. En sentido amplio, esta remite a la unión entre los individuos y a las diferentes formas que asume la identidad colectiva (“Estado”, “nación”, “pueblo”, etc. en el seno de una sociedad determinada. En las últimas décadas ha llegado a convertirse en un tropo central en el ámbito de las ciencias sociales y las humanidades, aunque sus primeras apariciones se remontan a varios siglos atrás. En el artículo nos proponemos los siguientes objetivos: por un lado, analizar comparativamente los distintos usos y significados de esta metáfora en los discursos pioneros de Jean-Jacques Rousseau y Émile Durkheim —dos autores que además de haberla utilizado con frecuencia, le asignaron un papel fundamental en sus respectivas teorías—; y por otro lado, indagar en las implicaciones más generales de esta metáfora en tres planos de análisis diferenciados: el axiológico o valorativo, el epistemológico y el ontológico.

  1. LUZ E SOMBRA: O PÚBLICO E O PRIVADO EM JEAN-JACQUES ROUSSEAU E HANNAH ARENDT

    Directory of Open Access Journals (Sweden)

    Karlfriedrich Herb

    2007-12-01

    Full Text Available Tanto Jean Jacques Rousseau como Hannah Arendt desenvolvem seus ideais de república no conceito de luz e sombra. O artigo focaliza o dado obscuro da república: a esfera privada do cidadão. De acordo com a lógica interna das duas teorias, a arqueologia da vida privada começa com um conceito do político. Ambos os autores são céticos com relação à concepção moderna da vida privada como uma prioridade. Eles tendem a concordar mais com a teoria política clássica. Hannah Arendt restaura a separação aristotélica entre Polis e Oikos, as esferas privada e pública. Rousseau, porém, quer uma unidade politica ao estilo platônico. A república exige a completa transparência tanto da vida pública quanto da privada.

  2. Nurses as 'guests'--a study of a concept in light of Jacques Derrida's philosophy of hospitality.

    Science.gov (United States)

    Oresland, Stina; Lutzén, Kim; Norberg, Astrid; Rasmussen, Birgit H; Määttä, Sylvia

    2013-04-01

    As revealed in previous empirical research, nurses describe their position in home-based nursing care (HBNC) as that of 'guests' in the patient's home. Such a description is problematic as 'guests' might not be considered to belong to the realm of professionalism. As Jacques Derrida's work on hospitality has received wide publicity, sparking theoretical and philosophical discussion about host and guest, the aim of this study was to explore how the concept 'guests' can be understood in the light of Derrida's philosophy of hospitality. The study revealed that (a) guest must be considered a binary concept; and (b) hospitality should be regarded as an exchange of giving and receiving between a host and a guest. The present study demonstrated that it is important to reflect on the meaning of the concepts used by nurses in HBNC. Further theoretical and empirical exploration of the concept 'hospitality' would be fruitful, i.e. what is patients' understanding of 'hospitality' and 'hostility' related to nurses' descriptions of themselves as 'guests' in the patient's home.

  3. Soberania, lei, vontade geral e autoridade legítima segundo Do contrato social de Jean-Jacques Rousseau Soberania, lei, vontade geral e autoridade legítima segundo Do contrato social de Jean-Jacques Rousseau

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    Raquel Kritsch

    2011-04-01

    Full Text Available

    O objetivo deste artigo é introduzir o leitor no pensamento político de Jean-Jacques Rousseau, com base nas reflexões do autor em Do contrato social. Partindo-se da distinção entre poder e autoridade, procura-se mostrar o fundamento da legitimidade e a construção do contrato social ideal. Para o filósofo genebrino, a soberania, entendida como a vontade geral em ação, constitui o fundamento mais adequado às repúblicas, regidas por leis emanadas da vontade geral, as únicas capazes de expressar os interesses gerais de um “eu comum” que não se confunde nem com a maioria nem com os particulares. Depois de apresentadas as características centrais do poder soberano, discute-se o papel do governo e da religião civil na vida politicamente organizada sob um Estado republicano.

    O objetivo deste artigo é introduzir o leitor no pensamento político de Jean-Jacques Rousseau, com base nas reflexões do autor em Do contrato social. Partindo-se da distinção entre poder e autoridade, procura-se mostrar o fundamento da legitimidade e a construção do contrato social ideal. Para o filósofo genebrino, a soberania, entendida como a vontade geral em a

  4. Rancièrean Atomism: Clarifying the Debate between Jacques Rancière and Alain Badiou

    Directory of Open Access Journals (Sweden)

    Joseph M. Spencer

    2015-12-01

    Full Text Available In the late 1970s and the 1980s, a number of radical left political theorists focused their philosophical attention on the relevance of ancient atomism, revitalizing a tradition that went back to Karl Marx's work on his dissertation. This essay looks at the uses of atomism by two thinkers in particular, Jacques Rancière and Alain Badiou, in order to see how their discussions of and references to ancient materialism help to shed light on their fundamental disagreements about the nature of community and equality.First, this paper argues that what Badiou and Rancière most obviously share in their assessments of atomism is a negative judgment regarding the post-swerve constitution of the world, while what most obviously distinguishes their positions is their differing judgments regarding the preswerve rain of the atoms in the void (which Badiou assesses negatively and Rancière positively. Becoming clear both about how Badiou and Rancière respond to what comes before and after the atomistic swerve helps to clarify an implicit response on Rancière’s part to what has become Badiou’s chief objection to Rancière’s political theory. Second, this paper argues that the fact that Badiou assesses both what comes before and what comes after the swerve as negative, while Rancière assesses only what comes after the swerve as negative (because he assesses the pre-swerve rain of the atoms in the void positively, makes clear that their most essential point of difference concerns the status of the swerve that mediates between before and after. Working through the complexities of Badiou’s analysis of the swerve and uncovering Rancière’s extremely subtle analysis of the swerve helps to clarify a major aspect of what has become Rancière’s chief criticism of Badiou’s conception of philosophy.

  5. Enregistrer, ordonner et contrôler: les documents diplomatiques dans les "Registra Secreta " de Jacques II d'Aragon

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    Péquignot, Stéphane

    2002-06-01

    Full Text Available The study of the internal organisation of Jayme II´s Registra secreta shows the existence of a specific «system» for the gathering of diplomatical registered papers in chapters called legatio. However, this method of classification does not exclude other ones and these registers can be considered as an experimental laboratory for the arrangement and the location of registered documents. The composition of the registers and the interventions of the scribes within conduce then to look for the functions they are assigned with: allowing an easier control of the uses of the documentation by the king´s ambassadors, the Registra secreta take part, at the chancery, in a living memory of the administration of diplomatical matters.

    L'étude de l'économie interne des Registra secreta de Jacques II montre l'existence d'un «système» spécifique de rassemblement de la documentation diplomatique sous des rubriques legatio. Ce mode de classification n'est cependant pas exclusif, et les registres constituent un véritable lieu d'expérimentation pour l'ordonnancement et le repérage de la documentation enregistrée. L'examen de la tenue des registres conduit alors à celui des fonctions qui leur sont assignées: en facilitant le contrôle des usages de la documentation par les ambassadeurs du roi, ils participent à la chancellerie dune mémoire active de l'administration des affaires diplomatiques.

  6. Jacques Jacques, Le Faut mourir et les excuses inutiles qu'on apporte à cette nécessité. Le tout en vers burlesques. Edité par Claudie Costa, Paris, Honoré Champion, coll. « Sources classiques », 1998,  406 p.

    Directory of Open Access Journals (Sweden)

    Claudine Nédélec

    2010-07-01

    Full Text Available Un article du Dictionnaire des lettres françaises (xviie, paru dans la « Pochotèque »,dit encore de Jacques Jacques qu'il fit paraître « un assez grand nombre d'ouvrages de morale et de piété, bizarrement traités en vers burlesques. » Morale et piété certes, puisqu'il s'agit ici, dans la tradition de La Grande danse macabre et des arts de mourir, d'une série de tête-à-tête entre la Mort et un vivant ; invariablement, la Mort annonce que « Qu'il FAUT MOURIR, MOURIR IL FAUT » (p. 384 ; le viv...

  7. Zur theoretischen und gesellschaftlichen Konstitution der Eigenlogik moderner Erziehung. Überlegungen im Anschluss an Jan Amos Comenius und Jean-Jacques Rousseau

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    Dietrich Benner

    2012-12-01

    Full Text Available - On theoretical and social constitution of modern education. Reflections with reference to Jan Amos Comenius and Jean-Jacques Rousseau - This article draws on Comenius and Rousseau to examine the theoretical and social constitution of education. Specifically, we analyze the tensions between the Comenius' pansophy and his theory of education in the Early Mod-ern Age as well as between Rousseau's theory of common will and his theory of negative education. The article demonstrates that while both Comenius and Rousseau are important for contemporary discussions of the structure of pedagogical action, neither Comenius' pansophy nor Rousseau's idea of common will are sufficient to ground these discussions.

  8. Psicoanálisis, verdad y clínica: puntualizaciones sobre el concepto de verdad en la teoría de Sigmund Freud y Jacques Lacan

    OpenAIRE

    Orellana Godoy, Tamina, Tamina

    2015-01-01

    Psicoanálisis, verdad y clínica. Puntualizaciones sobre el concepto deverdad en la teoría de Sigmund Freud y Jacques Lacan.Autor: Tamina Orellana GodoyLa verdad en psicoanálisis ha sido tratado principalmente en relación con lafilosofía tomando autores como Aristóteles, Santo Tomás de Aquino y MartinHeidegger. La propuesta de esta tesis no pretende desconocer estas relaciones ydiferencias, sino que pretende estudiar un concepto de verdad propio dentro de lateoría psicoanalítica lacaniana ya a...

  9. El programa de investigación propuesto por Jacques Lacan en el año 1966: de la verdad como causa para el sujeto

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    Jaime Iván Hernández España

    2014-07-01

    Full Text Available In 1966, the psychoanalyst Jacques Lacan publishes Écrits setting an antecedent for his teachings. We consider that this antecedent leaves a very specific proposal for psychoanalysis and a field where the psychoanalyst can make its practice possible: truth as a cause to the subject. However, Lacan warns, from a psychoanalytical science perspective, that we must resist other ways of relationship with truth as a cause. Thus, from his scientific obedience and through a structuralist definition, Lacan also approaches other fields outside the jurisdiction of psychoanalysis: magic, religion, and science.

  10. Transculturalidade entre fronteiras no continente norte-americano: The tortilla curtain, de T. C. Boyle, e Volkswagen Blues, de Jacques Poulin

    OpenAIRE

    Montarroyos Santos Umbelino, Cristiane

    2011-01-01

    Partindo do pressuposto de que a literatura pode ser constituída por metaficções historiográficas, este trabalho analisa comparativamente os romances The Tortilla Curtain (1995), do escritor estadunidense T. C. Boyle, e Volkswagen Blues (1984), do escritor quebequense Jacques Poulin, com o objetivo de delinear os recursos linguísticos e literários que tais autores utilizam para representar as fronteiras entre o Canadá, os Estados Unidos e o México. Para tanto, argumentamos acer...

  11. Jean-Jacques Rousseau

    DEFF Research Database (Denmark)

    Larsen, Mihail

    2009-01-01

      "Klassisk og modernepolitisk teori" er en bred indføring i politiske teorier, traditioner og forskningsfelter fra Platon og Aristoteles til vor tids stadig mere omfattende og specialiserede politiske tænkning. "Rousseau" rummer en systematisk gennemgang af Rousseaus forfatterskab med vægt på hans...

  12. Rachmaninov: Aleko / Jacques Constant

    Index Scriptorium Estoniae

    Constant, Jacques

    1998-01-01

    Rachmaninov: Aleko; Le Chevalier avare; Francesca da Rimini. Choeur de l'Opera de Göteborg, Orchestre Symphonique de Göteborg, Neeme Järvi. DG 453 452-2 (3 CD:444 F ou 168 F chacun). 1996. TT:2 h 53'21

  13. Rachmaninov: Aleko / Jacques Constant

    Index Scriptorium Estoniae

    Constant, Jacques

    1998-01-01

    Rachmaninov: Aleko; Le Chevalier avare; Francesca da Rimini. Choeur de l'Opera de Göteborg, Orchestre Symphonique de Göteborg, Neeme Järvi. DG 453 452-2 (3 CD:444 F ou 168 F chacun). 1996. TT:2 h 53'21

  14. Jean-Jacques Rousseau

    DEFF Research Database (Denmark)

    Larsen, Mihail

    2009-01-01

      "Klassisk og modernepolitisk teori" er en bred indføring i politiske teorier, traditioner og forskningsfelter fra Platon og Aristoteles til vor tids stadig mere omfattende og specialiserede politiske tænkning. "Rousseau" rummer en systematisk gennemgang af Rousseaus forfatterskab med vægt på ha...

  15. El manzano revolucionario de Gustave Flaubert y los ocho materialismo de Jacques Lacan // Gustave Flaubert`s revolutionary apple tree and Lacan`s eight materialisms

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    David Pavón Cuéllar

    2012-12-01

    Full Text Available Se examina la actitud ambivalente de Jacques Lacan hacia el materialismo a la luz de una escena puntual en la novela Bouvard et Pécuchet de Gustave Flaubert. Esta escena, en la que un manzano reviste la forma de un revolucionario, nos permite discutir la esencia problemática de la materialidad en Lacan. Se distinguen ocho formas de materialismo en la teoría lacaniana y se muestra su oposición con respecto a otras formas de materialismo rechazadas en la misma teoría. // Jacques Lacan's ambivalent attitude towards materialism is examined at the light of a precise scene in Gustave Flaubert's novel Bouvard et Pécuchet. This scene, in which an apple tree takes the form of a revolutionary, allows us to discuss the problematic essence of materiality in Lacan. Eight forms of materialism are distinguished in Lacanian theory and opposed to other forms of materialism that would be rejected in this theory.

  16. Éloi Laurent et Jacques Le Cacheux, 2012, Économie de l’Environnement et Économie Écologique, Paris, Armand Colin, 214 pages.

    OpenAIRE

    2014-01-01

    Le défi relevé par Éloi Laurent et Jacques Le Cacheux est de résumer l’ensemble de l’analyse économique des questions environnementales, en regroupant à la fois la diversité des courants de pensée et celle des problématiques environnementales, dans un ouvrage accessible à un large public. Les auteurs sont tous deux économistes au département des Études de l’Observatoire Français des Conjonctures Economiques (OFCE). Éloi Laurent est spécialisé dans les questions relatives au développement dura...

  17. Et kritisk bidrag til en etisk seksualpædagogik tænkt med teorier af Jacques Lacan, Jean-Luc Marion og Emmanuel Lévinas

    DEFF Research Database (Denmark)

    Secher, Marianne Træbing

    2013-01-01

    Thesis. A critical contribution to an ethical sexual pedagogy through theories of Jacques Lacan, Jean-Luc Marion and Emmanuel Lévinas. In Denmark, we educate social workers, social pedagogues, and health workers in sexology.27 The state presents its view on how to get sexuality on the agenda...... becomes a question of whether or not you have acted in accordance with your desires - this question, which Lacan poses, goes for both the mentally ill and the pedagogical sexologist. It is to be understood as whether or not you are willing to overcome your resistance and put your desire under analysis......, understand and comprehend. Here a new phenomenology by Jean Luc Marion is introduced, a theory of saturated phenomena. It merges this with Lacans concept of things that do not exist and Lévinas’ theory of desire of infinity. The paper wishes to analyze Lévinas and Lacan with Marion in an attempt to find new...

  18. Licences de peche et gestion d'une pecherie: analyse bio-economique de la peche de la coquille Saint-Jacques en baie de Saint-Brieuc

    OpenAIRE

    Meuriot, Eric; Cochet, Yves; Fifas, Spyros

    1988-01-01

    La pêche de la coquille Saint-Jacques en baie de Saint-Brieuc a connu un développement très rapide de 1962 à 1975. Les mesures de gestion de la pêcherie prises avant 1973, pour contenir les effets de l'augmentation du nombre de bateaux, n'ont pas été. de natureà éviter une chute des rémunérations du travail et du capital. Le système de licences de pêche, instauré en 1973, n'a quant à lui pas permis de redresser la situation. L'évolution potentielle de la pêcherie, en présence d'un recrutement...

  19. Jacques Frémeaux, De quoi fut fait l’empire, les guerres coloniales au XIXe siècle 

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    d’Andurain, Julie

    2014-01-01

    De quoi fut fait l’Empire est l’un des meilleurs, sinon le meilleur ouvrage produit par Jacques Frémeaux, professeur à Paris-Sorbonne, ces dernières années. Outre une très belle érudition comme a son habitude, il fait preuve d’une très grande maîtrise de l’analyse comparative de la guerre coloniale au XIXe siècle présentée ici comme un phénomène global. Son propos consiste en effet à montrer que ces guerres lointaines ne sauraient se comprendre autrement que par comparaison les unes aux autre...

  20. Considerations on paranoiac psychosis and its relation with personality Annotations around Jacques Lacan's Doctoral Thesis. The case of psychosis and its relation to the subjective

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    Jaime Velosa Forero

    2010-01-01

    Full Text Available De las psicosis paranoicas y de su relación con la personalidad, es el título de la tesis de grado de doctorado de Jacques Lacan, editada en 1932 (1987. A partir de la lectura de ese trabajo, se presenta en este escrito una breve reflexión sobre el asunto de las psicosis y de su relación con lo psicológico y lo social. Se revisan algunos planteamientos de Lacan, se retoma el caso Aimée y se intenta privilegiar la noción de escucha y la categoría aún no desarrollada de sujeto.

  1. Estudio de la métrica de las canciones contenidas en Les Chansons des Pélerins de S. Jacques (1718

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    Ignacio Iñarrea Las Heras

    2010-01-01

    Full Text Available In the present article we offer an analysisof the manner in which the six songsincluded in the 1718 book Les Chansons desPélerins de S. Jacques were composed. Thiswork is one of the many edited in France,mainly from the XVI to the XVIII centuries,for the use of pilgrims on their journeyto Santiago de Compostela. The study ofmetrics in these compositions (rhyme, meterand stanzas, together with other factors,such as the themes and functions of thesongs, will be of use to establish whetherthey were cultivated or popular poetry, howthey were received by the public and tosettle the time in which they were mostlikely written and published for the firsttime.

  2. Clínica, política y psicoanálisis. (a propósito de los cuatro discursos de jacques lacan)

    OpenAIRE

    Carmona P., Jaime Alberto

    2010-01-01

    Cuál es el lugar del psicoanálisis en la historia de las prácticas clínicas de nuestra cultura?. Para responder a esta pregunta es menester definir, así sea someramente, lo que entendemos por cultura y por psicoanálisis. Una vía para cernir nuestra cultura actual es pensarla a la luz del proceso de imbricación entre el saber y el poder en la historia de occidente que se consolida según Michel Foucault a partir del siglo XVI y que da lugar a la configuración de lo que Jacques Lacan formula com...

  3. A New Economic and Political State of Play in the Energy Sector: On Jean-Pierre Hansen and Jacques Percebois, Energy. Economy and politics; Energie: nouvelle donne economique et politique. A propos du livre de Jean-Pierre Hansen et Jacques Percebois, Energie. Economie et politiques

    Energy Technology Data Exchange (ETDEWEB)

    Lesourne, J. [Association Futuribles International, 75 - Paris (France)

    2011-04-15

    If there is one sector in which the state of play has changed radically over a few decades, it is the energy sector. It has been affected simultaneously by the prospect that the main fossil fuels will become exhausted, by the impact on our planet's climate of the consumption of this fossil energy (implying increased recourse to renewable sources) and by the rapid economic development of large nations consuming increasing quantities of energy. Energy-related policies (particularly economic and technological policies) are, in fact, being developed in an increasingly complex and international context, which is, at times, very difficult to grasp. Fortunately, two specialists in energy matters, Jean-Pierre Hansen and Jacques Percebois, have published a very comprehensive survey of this new economic and political state of play in the energy field: 'Energie. Economie et politiques' [Energy: Economics and Policies] (Brussels: De Boeck, 2010). It clearly is not possible here to go into all the questions they confront, but in this review Jacques Lesourne, who has read the book for Futuribles, clearly demonstrates its importance and presents the reader with the main facets of the work that make it a reference tool for all involved in this sector, including the most highly specialized. (author)

  4. Arte y política: un estudio comparativo de Jacques Rancière y Nelly Richard para el arte latinoamericano

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    Verónica Capasso

    2016-01-01

    Full Text Available En este artículo se indagan y comparan las teorías de Jacques Rancière y Nelly Richard sobre la relación entre arte y política desde el pensamiento posfundacional, y se producen reflexiones y análisis de manifestaciones artísticas latinoamericanas vanguardistas o críticas en diálogo con ambas. Para ello, se parte de una presentación de las teorías de Rancière y Richard en términos generales, se focaliza en las ideas que dichos autores tienen de la política y, específicamente, en la conceptualización que hacen del arte y su relación con la política. Al mismo tiempo, se desarrolla una interpretación de producciones artísticas desde una mirada centrada en sus diversas conexiones con lo político, más allá del contenido temático de estas. Se utiliza la perspectiva metodológica cualitativa transdisciplinaria, que articula distintas áreas de conocimiento (filosofía política, sociología, historia del arte. En el caso de los desarrollos de Jacques Rancière, se recurre a herramientas teóricas metropolitanas para resituarlas y repensarlas en función del arte de Latinoamérica. En este sentido, se trata de potenciar sus ideas en el análisis de casos locales. En cuanto a la teoría de Nelly Richard, sus conceptos de arte crítico y vanguardista se ponen en relación con el arte latinoamericano. Finalmente, se propone una comparación en la cual se destacan similitudes y diferencias conceptuales entre ambos en combinación con análisis de casos para abrir el panorama analítico e interpretativo que vincule teorías actuales con estudios de manifestaciones artísticas locales.

  5. Thobie Jacques, Les Intérêts culturels français dans l’Empire ottoman finissant. L’enseignement laïque et en partenariat, Peeters, Leuven, 2009, 461 p.

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    Caroline Piquet

    2010-09-01

    Full Text Available À l’heure où la France cherche à relancer sa politique culturelle au Moyen-Orient avec l’implantation d’universités et de lycées prestigieux, l’ouvrage de Jacques Thobie vient nourrir la réflexion sur le rôle de l’éducation dans les processus d’expansion politique et le jeu des puissances. Jacques Thobie publie ici le complément à sa thèse désormais célèbre, Intérêts et impérialisme français dans l’Empire Ottoman 1895-1914. L’ouvrage n’est que la première partie d’un travail sur l’enseignemen...

  6. La réécriture du personnage biblique de Judas Iscariote dans "Carnet secret de Judas Iscariote" d’Auguy Makey et "Judas, le deuxième jour" de Jacques Duquesne

    OpenAIRE

    Mengue Nguema, Nadine Fludore

    2012-01-01

    Traditional historiography presents Judas as a Devil hero, with a negative influence.That thesis would like to refuse the dogmatic version of the Bible, about Judas, andinvites to another way, more dynamic. How Romanesque literature writes againstthis figure, beyond reductions and Manichaeism? Does-it proposed another version?A comparison between Auguy Makey and Jacques Duquesne attests that arehabilitation of that figure is working. But the divergence of these authors is abouttheir interpret...

  7. FCJ-160 Politics is Serious Business: Jacques Rancière, Griefing, and the Re-Partitioning of the (NonSensical

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    Steve Holmes

    2013-12-01

    Full Text Available This article contextualises certain elements of ‘griefing’ as a form of political action in virtual world by drawing on the political philosophy of Jacques Rancière. A small but growing number of scholars are starting to view griefing as an avant-garde, anarchist, or hacktivist political activity. I suggest that Rancière offers a more specific articulation of what constitutes political action and activism for griefing collectives because his understanding of politics is entirely grounded in relationship to the types of communities and individual political equality. The article focuses specifically on the Patriotic Nigras activities in the Great Habbo Raid of 2006 in an attempt to understand how a Rancièreian framework can provide some analytical tools for articulating politics in virtual worlds. I conclude that the PN do not ultimately realise a Rancièreian framework. They challenge not partitions of the sensible, but partitions of the nonsensical specific to the different operation of politics and community formation in virtual worlds.

  8. Autonomia, heteronomia: observação sobre a relação entre corpo e estrutura na obra de Jacques Lacan

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    Léa Silveira Sales

    2007-09-01

    Full Text Available Os anos de 1954 e 1955 correspondem a um momento da obra de Jacques Lacan que pode ser apontado como o auge do recurso mais direto à estrutura que, conformada pelos significantes, responde pela total determinação do sujeito. Neles, o "efeito de sujeito", a partir de sua própria definição, chega a dispensar explicitamente associações com o ser humano, em termos do que essa expressão pudesse indicar como suporte vital, qualquer que fosse. Com a construção do grafo do desejo (1957, o problema passa a receber uma nova configuração. Assiste-se, então, a uma insistente recuperação do papel do corpo na constituição do desejo a partir do modo como é pensada a relação deste com a necessidade e com a demanda. Este artigo aborda os termos dessa reinserção e procura indicar em que sentido ela começa a circunscrever um dos vetores da ultrapassagem da racionalidade estruturalista.

  9. Iconologie des infantes (Tumbo A et Tumbo B de la cathédrale de Saint-Jacques de Compostelle et Tumbo de Touxos Outos

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    Ghislaine Fournès

    2008-07-01

    Full Text Available Les miniatures des Tumbos A et B de la cathédrale de Saint-Jacques de Compostelle et du Tumbo de Touxos Outos établissent à travers la représentation des rois, reines et infantes, d’Alphonse II à Alphonse X, une généalogie royale. L’analyse des miniatures consacrées aux figures féminines confirme que, dans le royaume de León et en Castille, les infantes ont eu, aux XIe et XIIe siècles, un rôle majeur, spirituel et politique, notamment à travers l’institution de l’infantat.Las miniaturas de los Tumbos A y B de la catedral de Santiago de Compostela, y del Tumbo de Touxos Outos establecen a través de la representación de los reyes, reinas e infantas, desde Alfonso II hasta Alfonso X, una genealogía real. El análisis de las miniaturas dedicadas a las figuras femeninas confirma que, en el reino de León y en Castilla, las infantas detuvieron, durante los siglos XI y XII, un papel importante, a la vez espiritual y político, sobre todo gracias a la institución del infantado.

  10. THE PHENOMENOLOGY OF RELIGION OF THE NEW TYPE OF JACQUES WAARDENBURGH IN THE FRAMEWORK OF THE DUTCH TRADITION OF THE PHENOMENOLOGY OF RELIGION

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    Alexandr Koltsov

    2013-06-01

    Full Text Available The author examines in this article the religious phenomenology of Jacques Waardenburgh, a Dutchman known for his studies of the phenomenology of religion of the new type. After a brief examination of various tendencies in the study of religious phenomenology and their classification, the author turns his attention to the phenomenology of religion of the new type as exemplified by the classical proponents of the Dutch school (Pierre Daniel Chantepie de la Saussayee, William Kristensen and Gerardus van der Leeuw. By comparing concepts stated as answers to specific questions, Waardenburgh appears to employ critical acumen in his formulation of the material left by his predecessors in the field. But the elements of religious phenomenology which relate to an existential conception of data and which were accepted by the classical school are excluded by Waardenburgh. Waardenburgh, on the other hand, attempts to substitute a philosophical hermeneutic with one drawn from the applied sciences, in as much, and this is the author’s opinion, that the phenomenology of religion of the new type refuses to mediate between the disciplines which study empirical material and the philosophical conception of religion. In addition, Waardenburgh remarks that the constant task of the phenomenology of religion is to mediate among the disciplines which employ the empirical method and those cognitive spiritual needs which face the student of religious phenomena. Among these disciplines, sociology replaces history to take first place, followed by cultural anthropology. Thus, the cognitive factor become more pragmatic

  11. Horizontes de diálogo em Educação Ambiental: contribuições de Milton Santos, Jean-Jacques Rousseau e Paulo Freire Dialogue perspectives in Environmental Education: contributions of Milton Santos, Jean-Jacques Rousseau and Paulo Freire

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    Sandro de Castro Pitano

    2009-12-01

    Full Text Available Dialogando interdisciplinarmente com referenciais teóricos da Geografia, da Educação e da Filosofia, buscamos contribuir com os debates em torno da "Educação Ambiental", propondo novas perspectivas de análise ancoradas no pensamento político e pedagógico de Milton Santos, Jean-Jacques Rousseau e Paulo Freire. Entendemos que, se o fator determinante para o esgotamento dos elementos vitais do meio geográfico e das condições de sustentabilidade da vida na terra é o resultado das relações estabelecidas entre os homens, em sistemas sociais culturalmente heterogêneos, precisamos modificar nossa perspectiva de análise diante dos problemas ambientais na educação. O foco passa a ser não mais a dinâmica ser humano x natureza ou, ainda, sociedade x natureza, e sim sociedade x meio geográfico, o que sugere uma educação "socioambiental".Through interdisciplinary dialogue with theoretical references of Geography, Education and Philosophy, we aim at contributing to debates about "environmental education", proposing new perspectives of analysis supported by the political thoughts and teachings of Milton Santos, Jean-Jacques Rousseau and Paulo Freire. We believe that, if the determinant factor for the extinction of the vital elements of the geographic means and the sustainable conditions of life on planet Earth is the result of relations established between human beings, in culturally heterogeneous social systems, a change of point of view is necessary in the face of environmental problems in the field of education. This way, the focus goes from the dynamic of human being x nature, or, still, society x nature, to society x geographic means, what suggests a "socioenvironmental" education.

  12. Sovereignty and Democracy in Global Times: acutality of the Jean-Jacques Rousseau Political Philosophy and the limits of the social contract

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    Marcus Baccega

    2017-09-01

    Full Text Available SOBERANIA E DEMOCRACIA EM TEMPOS MUNDIALIZADOS: ATUALIDADE DA FILOSOFIA POLÍTICA DE JEAN-JACQUES ROUSSEAU E OS LIMITES DO CONTRATO SOCIAL Resumo: este artigo visa a problematizar os (descaminhos dos conceitos políticos e das práticas sociais e jurídicas em torno da soberania política do Estado Nacional e da democracia nos tempos de mundialização do Capital. Portanto, revisita e percorre uma breve arqueologia conceitual da Soberania, desde Isidoro de Sevilha até a clássica definição de Jean Bodin nos Seis Livros sobre a República (1576. O propósito é problematizar a filosofia política de Rousseau para, então, perceber e discutir seus limites suas virtualidades, bem como a atualidade de sua noção de Contrato Social e o papel da Filosofia Política na Era do Capital Global. Palavras-chave: Rousseau. Soberania. Mundialização do Capital. Abstract: this paper casts doubt on the ways and shunts of political concepts and social and legal practices concerning political sovereignty of the Nation State and democracy at the time of Capital’s globalization. It revisits a brief conceptual archeology of Sovereignty, since Isidore of Seville to the classical definition by Jean Bodin in The Six Books on the Republic (1576. The purpose is casting doubt on the political philosophy of Rousseau, in order to discuss its limits and virtualities, and the topicality of his notion of social contract and the role of Political Philosophy at the Age of Global Capital. Keywords: Rousseau. Sovereignty. Globalization of Capital.

  13. Natureza, razão e sociedade no Discurso sobre a origem e os fundamentos da desigualdade entre os homens de Jean-Jacques Rousseau

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    Raquel Kritsch

    2011-03-01

    Full Text Available O objetivo deste artigo é introduzir o leitor no pensamento político e social de Jean-Jacques Rousseau, a partir de suas reflexões no Discurso sobre a origem e os fundamentos da desigualdade entre os homens. Partindo da crítica às noções de lei e direito naturais correntes à época, Rousseau procura discutir o que teria sido a condição natural de perfeito equilíbrio dos seres humanos com o meio, antes de forjarem todas aquelas abstrações – que os afastaria definitivamente de sua condição inocente e pura – necessárias a uma vida em comum baseada na moralidade e em critérios de justiça compartilhados. Para isso, discute os aspectos físicos (ou naturais, metafísicos e morais (ou sociais do homem selvagem para mostrar que a desigualdade é uma criação humana ligada ao progresso da perfectibilidade diante do livre arbítrio e, sobretudo, aos desenvolvimentos sociais e morais dos seres humanos na vida em coletividade (a determinação do bom, do justo, do virtuoso nas sociedades ditas civilizadas. Por fim, são brevemente apontadas as críticas políticas feitas pelo autor às sociedades “civilizadas” – para ele, injustas porque desiguais em seu fundamento – até então conhecidas.

  14. A verdade e o engodo do desejo na leitura do seminário a angústia de Jacques Lacan

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    Daniela Teixeira Dutra Viola

    2011-06-01

    Full Text Available Discute-se uma vertente do Seminário 10, A angústia, de Lacan (1962-1963 no qual o autor elabora uma oposição entre a dimensão enganosa do desejo - presente principalmente no nível em que o objeto a assume a forma visual - e a verdade que é sinalizada pela angústia, na medida em que tal afeto é definido nessa obra como o que não engana. Essa investigação é circunscrita no Seminário 10 e, assim, visa-se localizar a extração do objeto a nessa construção lacaniana sem pretender abarcar todas as suas consequências, que são definidas apenas nos seminários subsequentes.The truth and the bait of desire in the readings of the anguish Seminars of Jacques Lacan. The present article discusses a slope of the Seminar 10, The anguish, of Lacan (1962-1963 in which this author prepares an opposition between the deceiving dimension of the desire - present mainly in the level in which the object a assumes the visual form - and the truth that is signaled by the anguish, as such affection is defined in this work as what it does not deceive. This investigation is limited to the Seminar 10, and that is why it aims to locate the extraction of the object a from this Lacanian construction without intending to discuss all its consequences, which will be defined in later Seminars.

  15. Tapices de Escenas mitológicas tejidos en los talleres bruselenses de Jacques van der Borcht (h. 1650-h.1709-1713 y Albert Auwercx (1629-1709: Nueva documentación

    Directory of Open Access Journals (Sweden)

    García Calvo, Margarita

    2016-09-01

    Full Text Available This article is based on previously unpublished documentation for two tapestries of mythological scenes woven in the well-known workshops of Albert Auwercx and Jacques van der Borcht. A set of tapestries signed by van der Borcht in the Kunsthistorisches Museum, Vienna, corresponds for the most part with those described in this document, which also provides interesting information concerning the painters who participated in designing the models for this series.En este artículo se aporta una documentación inédita sobre dos tapicerías de Escenas mitológicas tejidas en las conocidas manufacturas de Albert Auwercx y de Jacques van der Borcht. Con la firma de este segundo tejedor se conserva en Viena (Kunsthistorisches Museum un conjunto de tapices, que se corresponde en su mayoría con los descritos en este documento, que proporciona además interesantes novedades acerca de los pintores que participaron en el diseño de los modelos de esta serie.

  16. Dimensiones políticas de la deconstrucción: un análisis político de la discusión de Jacques Derrida con la fenomenología y el estructuralismo

    Directory of Open Access Journals (Sweden)

    Emmanuel Biset

    2009-12-01

    Full Text Available El artículo busca realizar un aporte en el marco del renovado interés por el pensamiento político de Jacques Derrida. El objetivo es precisar ciertas contribuciones en la discusión que Derrida tiene con la fenomenología y el estructuralismo. Para ello se muestran dos dimensiones centrales de los textos tempranos del autor para pensar la política: por una parte, al discutir una definición tradicional de filosofía, ejemplificada aquí con la fenomenología, se posibilita la construcción de otro vínculo entre filosofía y política; por otra parte, al cuestionar el formalismo inherente al estructuralismo desde nociones como juego o fuerza surge una politicidad estructural pensada como economía de la violencia. El presupuesto metodológico del cual partimos es que no necesariamente en los textos donde la política constituye un tema explicito es donde deben rastrearse sus aportes para pensar la política. Para ello, vamos a restringir nuestra lectura a tres textos: "Introducción a El Origen de la Geometría de Husserl" (1961, "Fuerza y Significación" (1963 y "La estructura, el signo y el juego en el discurso de las ciencias humanas" (1966.This article aims at making a contribution within the framework of the new and renowned interest for Jacques Derrida's political thinking. The main objective is to clarify some specific contributions made to the discussion Derrida holds between phenomenology and structuralism. With this in mind, two central dimensions to think politics, found in the earliest texts of the author, are presented: on the one hand, by the discussion of a traditional definition of philosophy, exemplified here with phenomenology, a construction of a different link between philosophy and politics seems to be possible; on the other, by the questioning of the formalism inherent in structuralism from notions like play and force a structural politicity, thought of as economy of violence, emerges. The methodological assumption that

  17. CERN 50th Anniversary Official Celebration : one of the high moments of the day the signing of the golden book by the King of Spain Juan Carlos, the President of the Republic of France, Jacques Chirac and the President of the Swiss Confederation, Joseph Deiss

    CERN Document Server

    Patrice Loeiz

    2004-01-01

    CERN 50th Anniversary Official Celebration : one of the high moments of the day the signing of the golden book by the King of Spain Juan Carlos, the President of the Republic of France, Jacques Chirac and the President of the Swiss Confederation, Joseph Deiss

  18. CERN 50th Anniversary Official Celebration : one of the high momentsof the day: the signing of the golden book by the King of Spain Juan Carlos, the President of the Republic of France Jacques Chirac and the President of the Swiss Confederation Joseph Deiss

    CERN Multimedia

    Patrice Loiez

    2004-01-01

    CERN 50th Anniversary Official Celebration : one of the high momentsof the day: the signing of the golden book by the King of Spain Juan Carlos, the President of the Republic of France Jacques Chirac and the President of the Swiss Confederation Joseph Deiss

  19. Jacques FLEURENTIN. Guérisseurs et plantes médicinales du Yémen. Au pays de l’encens, de l’aloès et du café

    Directory of Open Access Journals (Sweden)

    Jean Lambert

    2004-09-01

    Full Text Available Jacques Fleurentin, pharmacien et pharmacologue,  a commencé à bourlinguer au Yémen en 1976. Au cours d’une période de « coopération » à la Mission Médicale Française de Taez, où il assurait la gestion du laboratoire d’analyses médicales de l’hôpital de la République, son intérêt avait d’abord été attiré par le jabal Sabir, ce sommet régulièrement arrosé par la mousson et riche en plantes médicinales et en médecins traditionnels. Après plusieurs autres séjours, il en tira une thèse d’État en ...

  20. Jacques Dubois, Stendhal une sociologie romanesque, Paris, éditions la découverte, “textes à l’appui / laboratoire des sciences sociales”, 2007, 251 p.

    Directory of Open Access Journals (Sweden)

    Luciano Curreri

    2007-06-01

    Full Text Available Leonardo Sciascia, écrivain du social, de la politique, du pouvoir, a dit : « celui qui aime Stendhal ne peut pas aimer Proust ». Et Sciascia, en tant qu’écrivain du social, de la politique, du pouvoir, avoue à plusieurs reprises aimer Stendhal : Stendhal for ever est le titre d’une section de Faits divers d’histoire littéraire et civile (1989. Jacques Dubois, qui a étudié Proust et son sens du social, le sait très bien. Ce n’est pas un hasard si Stendhal une sociologie romanesque commence a...

  1. La subjetivación política más allá de la esfera pública: Michel Foucault, Jacques Rancière y Simone Weil

    Directory of Open Access Journals (Sweden)

    Emilse Galvis

    2016-01-01

    Full Text Available Se afirma que la subjetivación política no puede pensarse al margen de las manifestaciones éticas, artísticas y espirituales de la política, en cuanto que despliegan de distintas maneras unos efectos sobre lo que es asumido como común, y reconfiguran nuevas formas de concebir el sujeto político en caminos inusuales de la subjetivación. Se problematiza la subjetivación política a partir de tres lecturas: la crítica, con base en los planteamientos de Michel Foucault; una cierta interpretación de las prácticas artísticas, en Jacques Rancière; y una concepción de la espiritualidad y la política a la luz de los planteamientos de Simone Weil.

  2. La construcción del sujeto político. Un acercamiento a la obra musical de Emir kusturica & the no smoking orchestra desde la obra de Jacques Rancière

    Directory of Open Access Journals (Sweden)

    Erika Castañeda

    2008-01-01

    Full Text Available El presente trabajo trata de como la propuesta musical de Emir Kusturica & the no smoking orchestra, crea nuevas formas de percepción sobre situaciones de conflicto armado (la Guerra en Bosnia-Herzegovina y exclusión (relación con la comunidad Rom, que cambian por completo el imaginario impuesto por los medios de comunicación sobre tales fenómenos. Lo anterior es visto a la luz de la teoría estética y política de Jacques Rencière, quien considera que el objeto de la política es hacer visible la imposibilidad de un orden universal que pueda recoger a todas las partes de la sociedad

  3. Relatório Jacques Delors e Parâmetros Curriculares Nacionais do Ensino Médio: Orientações para o Ensino da Educação Física

    OpenAIRE

    2014-01-01

    O presente artigo tem como objetivo analisar os princípios formativos presentes no Relatório Jacques Delors e nos Parâmetros Curriculares Nacionais do Ensino Médio para a Educação Física e o reflexo da concepção de formação escolar presente nesses documentos para a organização do ensino da Educação Física. As análises sugerem princípios formativos comuns aos dois documentos, bem como limites ao ensino da Educação Física com base nessa perspectiva, pois o que está em jogo é o atendimento às ne...

  4. Surface Water & Surface Drainage

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — This data set contains boundaries for all surface water and surface drainage for the state of New Mexico. It is in a vector digital data structure digitized from a...

  5. 雅克·朗西埃的艺术体制和当代政治艺术观%Jacques Ranciere' s Regimes of Art and Contemporary Political Art

    Institute of Scientific and Technical Information of China (English)

    蒋洪生

    2012-01-01

    本文探讨了朗西埃提出的艺术的三种辨识体制:影像的伦理体制、艺术的诗学/再现体制、艺术的美学体制,在这三种体制中,艺术的美学体制指向的是一种平等和民主政治,“歧感”则是其艺术与政治的联接点。本文据此重点考察了朗西埃对于当代政治艺术的批评:“批判艺术”如何步入“见证式艺术”和“关系艺术”的歧途;当代“批判艺术”如何面临着为全球化的商业逻辑收编的危险;以及当代艺术的伦理学转向对艺术的自主性和政治性的消解等等。文章最后以朗西埃解剖的艺术实例说明:在今天,政治/批判艺术意味着什么。%This paper examines the three regimes of art proposed by Jacques Ranciere: the ethical regime of images, the repre- sentative/poetic regime of art, and the aesthetic regime of art which implies a politics of equality and democracy. For Ranciere, "dissensus" is the articulating point between art and politics. This paper focus on Ranciere' s criticism on contemporary political art: how the "critical art" takes the wrong track toward the "testimony art" and "relational art" ; how the "critical art" was polluted by the logic of global consumerism ; and how the ethical turn of contemporary art constitutes a deconstruction of both the autonomy and the policity of art. In light of Ranciere's analysis of some works of art, this paper also sketches what political/critical art could mean today.

  6. 2251-IJBCS-Article-Jacques Sawadogo

    African Journals Online (AJOL)

    hp

    place de choix dans l'art culinaire car se prêtant mieux aux ... fixée à 93,90 eV afin de maximiser le signal, pour la détection de .... présentent un pic plus intense (111), dont l'angle de ..... Disturbance of cerebral function in people exposed to ...

  7. De visie op literatuur van Jacques Derrida

    NARCIS (Netherlands)

    Sijde, Nico van der

    1997-01-01

    The aim of this thesis is to describe and explain Derrida's view of literature against the background of his linguistic philosophy. A key concept in this respect is "invention de l'autre": the evocation of "the other" (the singular, ineffable and incomparable) by an experimental use of language.

  8. Introduction Robin Melrose The French philosopher Jacques ...

    African Journals Online (AJOL)

    technique is precisely an exploding of categories. Linguists may ... In linguistics, the principle of difference is usually thought of in terms .... of the very principle of difference which. 50 ..... in Foreign Language Teaching', Applied Lingusitics,. Vol.

  9. 2760-IJBCS-Article-Jacque Boco Adjakpa

    African Journals Online (AJOL)

    hp

    Bathing of body, drinking, dressing in hot water, local application, scarification, instillation, washing of mouth were various ... Keywords: Benin, medicinal plant, traditional uses, diseases, treatment ..... Alternative or Incremental Method for.

  10. 2294-IJBCS-Article-Jacques Sawadogo

    African Journals Online (AJOL)

    hp

    2006-02-17

    Feb 17, 2006 ... 2Faculté des Sciences, Services de Chimie Analytique et Chimie des ... diffraction (XRD), Scanning Electron Microscopy (SEM) and gravimetric analysis show that they are ... of semiconductor materials (MoSe2 and WSe2.

  11. De visie op literatuur van Jacques Derrida

    NARCIS (Netherlands)

    Sijde, Nico van der

    1997-01-01

    The aim of this thesis is to describe and explain Derrida's view of literature against the background of his linguistic philosophy. A key concept in this respect is "invention de l'autre": the evocation of "the other" (the singular, ineffable and incomparable) by an experimental use of language. Tha

  12. A Research Model of Hmong Ethnography in Southeast Asia:Rereading Jacques Lemoine’s Un Village Hmong Vert du Haut Laos%东南亚苗族山地文化研究的民族志典范--李穆安《老挝高地的一个青苗村庄》述评

    Institute of Scientific and Technical Information of China (English)

    李寐竹

    2016-01-01

    法国人类学家李穆安的《老挝高地的一个青苗村庄》是一部研究东南亚高地苗族社会生活的民族志佳作,通过分析老挝苗族不同的支裔起源及其变迁,多角度地描绘了当地苗族群体的社会、文化与生活。该书严谨细致的“深描”范式,为海内外苗学研究者提供了一个堪称经典的山地民族志书写范本。%Un Village Hmong Vert du Haut Laos by French anthropologist Jacques Lemoine is an outstanding ethnography on the lives of mountain Hmong in Southeast Asia. Through the analysis of the origin and transition of Hmong in Laos,the author describes the society,culture and life of local Hmong from multiple perspectives. Jac-ques Lemoine’s meticulous ethnographic deep description pattern provides domestic and abroad researchers with a classic ethnographic writing model.

  13. “本性应得”与“不可侵犯”——评马里旦的权利学说%A Comment on Jacques Maritain' s Theory on Rights——“Should by Nature”and “Resistance to Oppression”

    Institute of Scientific and Technical Information of China (English)

    张恒山

    2012-01-01

    马里旦的权利学说回归到阿奎那的自然法学说,以上帝规定人的本性、本质——人的功能正常运行——为基点,引申出人的自然义务和自然权利。其理解、使用的“权利”概念既有与古典自然法学权利观——正当自由——相近的“不可侵犯”之义,又有源自潘恩的“应得”之义,有时又有具体利益事项之义。对马里旦权利学说的辨析有助于深化对权利概念的认识。%Jacques Maritain' s theory on fights is a regression to the natural law theory of St. Thomas Aquinas, by which God creates human nature and features, constituting the basis for normal functioning of man, thus generating human natural obligation and natural fights. The concept of “fights” construed and uti- lized covers the classic natural law' s view on rights, namely the justifiable freedom, close to the notion of “re- sistance to oppression”. It also reflects the concept of “should” originating from Thomas Paine. Besides it re- fers to particular rights occasionally. In sum, analysis of Jacques Maritain' theory promotes the deep under- standing of the concept of rights.

  14. Le début du ive s. av. J.-C. dans l’espace culturel sénonais : les habitats de Bois d’Echalas à Ville-Saint-Jacques et de Beauchamp à Varennes-sur-Seine (Seine-et-Marne dans le contexte de l’interfluve Seine-Yonne The beginning of the 4th century BC in the the cultural space of the 'Sénonais': the settlements of Bois d’Echalas at Ville-Saint-Jacques and Beauchamp at Varennes-sur-Seine (Seine-et-Marne in the context of the land separating the Seine and the Yonne

    Directory of Open Access Journals (Sweden)

    Jean-Marc Séguier

    2008-04-01

    Full Text Available L’étude de deux habitats du début du ive s. av. J.-C. installés à proximité de la confluence Seine-Yonne permet de définir le faciès mobilier de cette partie du Bassin parisien au cours de La Tène B1a, notamment grâce à l’association d’un important cortège de céramiques locales et importées et d’un mobilier métallique significatif. L’analyse des structures de conservation et du mobilier conduit à établir une hiérarchie des établissements. Celui de Ville-Saint-Jacques, Bois d’Echalas, occupe une place prééminente dans le système social mis en place dans la région considérée, alors que celui de Varennes-sur-Seine, Beauchamp, se révèle d’un niveau inférieur. Au-delà de la comparaison entre les deux sites, c’est une lecture socio-économique de l’organisation territoriale qui est proposée.The study of two settlements of the beginning of the 4th century BC near the confluence of the Seine and the Yonne enables us to define the movable culture of this part of the Paris basin during La Tène B1a, notably because of the association of an important series of local and imported ceramics and significant metal articles. The analysis of the structures of conservation and of furniture lead to the establishment of a hierachy of settlements. That of Ville-Saint-Jacques, Bois d’Echalas, occupied a prominent place in the social system set up in the region in question, whereas that of Varennes-sur-Seine, Beauchamp, proved to be of a lower level. Beyond the comparison between the two sites, what is presented is a socio-economic lecture on territorial organisation.

  15. Prantsuse suursaaadiku hr. Jean-Jacques Subrenat sissejuhatav sõnavõtt / Jean-Jacques Subrenat

    Index Scriptorium Estoniae

    Subrenat, Jean-Jacques

    2002-01-01

    Ilmunud ka: Proceedings of the 8th International conference Estonia and the European Union : Estonia on its way to a changing Europe : October 31-November 2, 2001. - Tallinn, lk., lk. 124-131. Kriisi juhtimise puhul on EL roll eeskätt olla võimeline juhtima kogu erinevate ülesannete paletti alates politseoperatsioonidest kuni rahutagamiseni, alates ülesehitamisest kuni institutsioonide loomiseni

  16. Prantsuse suursaaadiku hr. Jean-Jacques Subrenat sissejuhatav sõnavõtt / Jean-Jacques Subrenat

    Index Scriptorium Estoniae

    Subrenat, Jean-Jacques

    2002-01-01

    Ilmunud ka: Proceedings of the 8th International conference Estonia and the European Union : Estonia on its way to a changing Europe : October 31-November 2, 2001. - Tallinn, lk., lk. 124-131. Kriisi juhtimise puhul on EL roll eeskätt olla võimeline juhtima kogu erinevate ülesannete paletti alates politseoperatsioonidest kuni rahutagamiseni, alates ülesehitamisest kuni institutsioonide loomiseni

  17. Superamphiphobic Surfaces

    NARCIS (Netherlands)

    Cavalli, A.; Mugele, F.; Brutin, David

    2015-01-01

    This chapter discusses recent trends in the development, fabrication, and characterization of superamphiphobic surfaces. An amphiphobic surface repels both polar liquids, such as water, and nonpolar (oily) liquids, and has therefore useful technological application in microfluidics devices, protecti

  18. Rumble surfaces

    CSIR Research Space (South Africa)

    National Institute for Transport and Road

    1977-01-01

    Full Text Available Rumble surfaces are intermittent short lengths of coarse-textured road surfacings on which vehicle tyres produce a rumbling sound. used in conjunction with appropriate roadsigns and markings, they can reduce accidents on rural roads by alerting...

  19. Surface analysis.

    Science.gov (United States)

    Kinsella, T

    2006-10-01

    Surface analysis techniques are important tools to use in the verification of surface cleanliness and medical device functionality. How these techniques can be employed and some example applications are described.

  20. Surface reconstructions

    CERN Document Server

    Fisher, David J

    2009-01-01

    It is well-known, even at the most elementary level of scientific knowledge, that free surfaces have properties which make them differ from the underlying bulk material. In the case of liquids, it is common knowledge - even among laymen - that the liquid surface acts as though it were a distinct skin-like material. At a slightly more advanced level, it is known that the liquid surface will seek to minimize its total surface energy by minimizing its surface area; thereby affecting its local vapor-pressure and adsorption behavior. In the case of solids too, it has long been known that different

  1. Surface chemistry

    CERN Document Server

    Desai, KR

    2008-01-01

    The surface Chemistry of a material as a whole is crucially dependent upon the Nature and type of surfaces exposed on crystallites. It is therefore vitally important to independently Study different, well - defined surfaces through surface analytical techniques. In addition to composition and structure of surface, the subject also provides information on dynamic light scattering, micro emulsions, colloid Stability control and nanostructures. The present book endeavour to bring before the reader that the understanding and exploitation of Solid state phenomena depended largely on the ability to

  2. 皮亚杰理论,新皮亚杰学派及其他 --Jacques Vonèche教授访谈录%Piaget' s Theory, the Neo - Piagetian School, and Relevant Topics - An Interview with Professor J. Vonèche

    Institute of Scientific and Technical Information of China (English)

    J.Vonèche; 李其维

    2000-01-01

    @@ 编者按:本刊副主编,华东师范大学心理学系李其维教授,目前正在日内瓦大学"皮亚杰档案馆"从事为期一年的有关皮亚杰理论的访问研究.因此,他有机会同档案馆馆长,瑞士日内瓦大学心理学系J@弗内歇(Jacques Vonèche)教授就皮亚杰理论以及其他认知发展心理学领域中的相关问题进行较为广泛和深入的交流.以下所录是其中十个有代表性的问题的问答概要,虽仅为"两家"之言,但我们期望读者能从中受到某些有益的启发.(Δ:李其维教授○:弗内歇教授)

  3. Spherical Surfaces

    DEFF Research Database (Denmark)

    Brander, David

    2015-01-01

    We study surfaces of constant positive Gauss curvature in Euclidean 3-space via the harmonicity of the Gauss map. Using the loop group representation, we solve the regular and the singular geometric Cauchy problems for these surfaces, and use these solutions to compute several new examples. We gi...

  4. Superhydrophobic surfaces

    Science.gov (United States)

    Wang, Evelyn N; McCarthy, Matthew; Enright, Ryan; Culver, James N; Gerasopoulos, Konstantinos; Ghodssi, Reza

    2015-03-24

    Surfaces having a hierarchical structure--having features of both microscale and nanoscale dimensions--can exhibit superhydrophobic properties and advantageous condensation and heat transfer properties. The hierarchical surfaces can be fabricated using biological nanostructures, such as viruses as a self-assembled nanoscale template.

  5. Thobie Jacques, L’administration générale des phares de l’Empire ottoman et la société Collas et Michel (1860-1960 – Un siècle de coopération économique et financière entre la France, l’Empire ottoman et les États successeurs, Paris, L’Harmattan, 2004, 299 p.

    Directory of Open Access Journals (Sweden)

    Jacques Couland

    2006-10-01

    Full Text Available Ce livre reprend, sous un titre amendé, la thèse de troisième cycle de Jacques Thobie (1972. Il ne s’agit pas pour autant d’une simple reprise ; de nombreuses mises à jour permettent d’étendre l’information jusqu’aux années de la liquidation de la société, aux résurgences d’actions plus tardives entreprises par des héritiers pour faire valoir des droits. S’y ajoutent d’utiles mises au point sur l’état des archives et de la documentation, leur localisation. L’ouvrage est divisé en 9 chapitre...

  6. Surface boxplots

    KAUST Repository

    Genton, Marc G.

    2014-01-22

    In this paper, we introduce a surface boxplot as a tool for visualization and exploratory analysis of samples of images. First, we use the notion of volume depth to order the images viewed as surfaces. In particular, we define the median image. We use an exact and fast algorithm for the ranking of the images. This allows us to detect potential outlying images that often contain interesting features not present in most of the images. Second, we build a graphical tool to visualize the surface boxplot and its various characteristics. A graph and histogram of the volume depth values allow us to identify images of interest. The code is available in the supporting information of this paper. We apply our surface boxplot to a sample of brain images and to a sample of climate model outputs.

  7. Surface phonons

    CERN Document Server

    Wette, Frederik

    1991-01-01

    In recent years substantial progress has been made in the detection of surface phonons owing to considerable improvements in inelastic rare gas scattering tech­ niques and electron energy loss spectroscopy. With these methods it has become possible to measure surface vibrations in a wide energy range for all wave vectors in the two-dimensional Brillouin zone and thus to deduce the complete surface phonon dispersion curves. Inelastic atomic beam scattering and electron energy loss spectroscopy have started to play a role in the study of surface phonons similar to the one played by inelastic neutron scattering in the investigation of bulk phonons in the last thirty years. Detailed comparison between experimen­ tal results and theoretical studies of inelastic surface scattering and of surface phonons has now become feasible. It is therefore possible to test and to improve the details of interaction models which have been worked out theoretically in the last few decades. At this point we felt that a concise, co...

  8. O processo decisório em Charles Edward Lindblom e a vontade geral em Jean-Jacques Rousseau: reflexões acerca da participação política e da necessidade de educação para essa participação

    Directory of Open Access Journals (Sweden)

    Roberta Aline Sbrana

    2017-08-01

    Full Text Available Na obra O Processo de Decisão Política, Charles Edward Lindblom tece reflexões acerca desse processo, destacando a relevância da participação política dos cidadãos em geral. Entretanto, esse autor alerta a necessidade da existência de uma educação que tenha como compromisso a formação de homens e mulheres para a participação social, pois somente a partir dessa educação tal participação poderá se efetivar. Do mesmo modo, na obra O Contrato Social, Jean-Jacques Rousseau apresenta considerações acerca da importância da participação do povo no processo de elaboração desse contrato, a qual ocorrerá por intermédio da “vontade geral”. Mas essa participação implica a criação de uma educação voltada para a formação do homem como indivíduo e cidadão, para que este participe de forma ativa da sociedade, tal como expõe em seu tratado pedagógico – Emílio ou Da Educação. O intuito desse trabalho é evidenciar que em ambas as reflexões esses autores discutem sobre essa relevância da participação política dos cidadãos, a qual, segundo sua visão, será concretizada apenas pela existência de uma educação que valorize a formação para a participação.

  9. Surfacing Moves

    DEFF Research Database (Denmark)

    Lutz, Peter

    2013-01-01

    such as schedules, machines, and aging bodies. To this end, the article also experiments with ‘surfacing’ as an ethnographic heuristic for figuring these different ‘spatial-timings’. The article concludes that surfacing matters not only in senior home care but also in the field-desks of ethnographic analysis....

  10. Attack surfaces

    DEFF Research Database (Denmark)

    Gruschka, Nils; Jensen, Meiko

    2010-01-01

    The new paradigm of cloud computing poses severe security risks to its adopters. In order to cope with these risks, appropriate taxonomies and classification criteria for attacks on cloud computing are required. In this work-in-progress paper we present one such taxonomy based on the notion...... of attack surfaces of the cloud computing scenario participants. © 2010 IEEE....

  11. Surfacing Moves

    DEFF Research Database (Denmark)

    Lutz, Peter

    2013-01-01

    such as schedules, machines, and aging bodies. To this end, the article also experiments with ‘surfacing’ as an ethnographic heuristic for figuring these different ‘spatial-timings’. The article concludes that surfacing matters not only in senior home care but also in the field-desks of ethnographic analysis....

  12. Describing Surfaces.

    Science.gov (United States)

    1985-01-01

    York. Do Carmo , Manfredo P, [1976], Differential Geometry of Curves and Surfaces, Prent- ice-Hall, Englewood Cliffs, NJ. Faugeras, 0. D., et. al, [1982...lightbulb. It is well-known (for exam~ple, do Carmo "" "..-’,.’.V .. .V...i ra I s ; ul ing-.. "’. Figure 11. The helicoid of a single blade. (Reproduced from [do Carmo 1976, Figure 2-27 Page 94]) where m and 1 are assumed

  13. Sobre um "individualismo" de Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    Cláudio Reis

    2007-12-01

    Full Text Available O artigo discute um aspecto da apropriação, por parte de Rousseau, do modelo contratualista - em especial, do ponto de partida "individualista" geralmente implicado por esse modelo.À igualdade e à liberdade , tradicionalmente associadas pelos autores contratualistas ao indivíduo e ilustradas paradgmaticamente na hipótese do estado de natureza,Rousseau acrescenta uma terceira,a unidade.Esse acréscimo revela-se fundamental,como o texto tenta mostrar,desdobrando a dupla perspectiva em que, a partir de Rousseau, pode-se pôr as relações entre indivíduo e comunidade:a perspectiva da teoria da lei,desenvolvida sobretudo no Contrato Social, e uma outra,que sugerimos no texto chamar de perspectiva do Legislador.

  14. JEAN-JACQUES ROUSSEAU OU L'AUSTÈRE DEMOCRATIE

    Directory of Open Access Journals (Sweden)

    Stéphane CAPORAL

    2008-09-01

    Full Text Available Although it may seem as a paradox, but in 1767, in a letter addressed to the Marquis de Mirabeau, JJ Rousseau declared his intention to find a government form to put the people above the law. Admitting the impossibility of such unnecessary step, JJ Rousseau recognized that his famous Social Contract is condemned to remain a spirit construction. The author of this article wonders, along with Otto von Gierke, if JJ Rousseau somehow imagined the Social Contract, taking as a framework the democratic ideas of his forefathers about freedom and equality, filling the frame with the contents of the Hobbes’s absolutist Contract. Such a perspective implies a lot of nuances that the author underlines in this article.

  15. Jacques Presser's Heritage: egodocuments in the study of history

    NARCIS (Netherlands)

    R.M. Dekker (Rudolf)

    2002-01-01

    textabstractIn Spanish: A mediados de los años cincuenta del siglo XX el historiador Jacob Presser introdujo una nueva palabra: egodocumento, término que venía a significar las autobiografías, memorias, diarios, cartas personales y otros textos en los cuales el autor escribe, explícitamente acerca d

  16. Jean-Jacques Rousseau's views on adult education

    Science.gov (United States)

    Dame, Frederick William

    1996-01-01

    Although Rousseau describes in Émile only his scheme for childhood education, he presents us in this work with some direct statements which can be applied to explain more fully the nature of adult education. The author surveys Rousseau's ideas on the role of the general will in adult educational philosophy, subject matter, methodology and negative education, as well as the relationships between the family, student, teacher, community and the state. He concludes that the modern Rousseau would not limit education to males and would recognize that the four Rousseauian periods of educational development — infancy, childhood, youngster, adolescence — is followed by a fifth: adulthood. Adult education is the logical continuation of the four previous phases. Throughout each phase education must permit intellectual and moral growth and always allow for creativity and diversity. Only then can adults become positive contributors to their society.

  17. Alain Badiou, Jacques Lacan and the Ethics of Teaching

    Science.gov (United States)

    Taubman, Peter M.

    2010-01-01

    This paper argues that Badiou's and Lacan's theorizations of ethics offer a way to formulate an ethics of teaching and to explore what such an ethics might look like when teachers encounter events that disrupt their quotidian lives. Relying on the work of Badiou and Lacan, the paper critiques mainstream approaches to the ethics of teaching and…

  18. Jacques Presser's Heritage: egodocuments in the study of history

    NARCIS (Netherlands)

    R.M. Dekker (Rudolf)

    2002-01-01

    textabstractIn Spanish: A mediados de los años cincuenta del siglo XX el historiador Jacob Presser introdujo una nueva palabra: egodocumento, término que venía a significar las autobiografías, memorias, diarios, cartas personales y otros textos en los cuales el autor escribe, explícitamente acerca

  19. Sociedad, democracia y patriarcado en Jean Jacques Rousseau

    OpenAIRE

    1996-01-01

    El texto trata de la vinculación que Rousseau establece entre la dualidad del ser social y la desigualdad social. Las propuestas de Rousseau sobre la libertad e igualdad, sobre la ciudadania, están condicionadas y limitada por la cadena de dualidades esenciales : contrato social y sexual, naturaleza masculina y femenina, espacio social público y privado, pedagogía para varones y para mujeres. Ya en Rousseau se aprecia que la igualdad sólo alcanzará a los "iguales" y la mitad de la especie no ...

  20. Jacques Presser's Heritage: Egodocuments in the Study of History

    OpenAIRE

    Dekker, Rudolf

    2002-01-01

    textabstractIn Spanish: A mediados de los años cincuenta del siglo XX el historiador Jacob Presser introdujo una nueva palabra: egodocumento, término que venía a significar las autobiografías, memorias, diarios, cartas personales y otros textos en los cuales el autor escribe, explícitamente acerca de sí mismo, de sus propios asuntos y sus sentimentos. La palabra fue rápidamente al holandés, pero el momento no fue el más oportuno. Los colegas de Presser fueron más reticentes que nunca a utiliz...

  1. Interview with Jean-Jacques Blaising - Head of Physics Department

    CERN Multimedia

    CERN Audiovisual Service

    2008-01-01

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

  2. Entrevue avec Jean-Jacques Blaising - Head of Physics Department

    CERN Multimedia

    CERN Audiovisual Service

    2008-01-01

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

  3. Jacques Presser's Heritage: egodocuments in the study of history

    NARCIS (Netherlands)

    R.M. Dekker (Rudolf)

    2002-01-01

    textabstractIn Spanish: A mediados de los años cincuenta del siglo XX el historiador Jacob Presser introdujo una nueva palabra: egodocumento, término que venía a significar las autobiografías, memorias, diarios, cartas personales y otros textos en los cuales el autor escribe, explícitamente acerca d

  4. A New Logic of Emancipation: The Methodology of Jacques Ranciere

    Science.gov (United States)

    Biesta, Gert

    2010-01-01

    The idea of emancipation plays a central role in modern educational theories and practices. The emancipatory impetus is particularly prominent in critical traditions and approaches where the aim of education is conceived as that of emancipating students from oppressive structures in the name of social justice and human freedom. What is needed to…

  5. XVII 'Jacques-Louis Lions' Spanish-French School

    CERN Document Server

    Alonso, Pedro

    2017-01-01

    The first part of this volume gathers the lecture notes of the courses of the “XVII Escuela Hispano-Francesa”, held in Gijón, Spain, in June 2016. Each chapter is devoted to an advanced topic and presents state-of-the-art research in a didactic and self-contained way. Young researchers will find a complete guide to beginning advanced work in fields such as High Performance Computing, Numerical Linear Algebra, Optimal Control of Partial Differential Equations and Quantum Mechanics Simulation, while experts in these areas will find a comprehensive reference guide, including some previously unpublished results, and teachers may find these chapters useful as textbooks in graduate courses. The second part features the extended abstracts of selected research work presented by the students during the School. It highlights new results and applications in Computational Algebra, Fluid Mechanics, Chemical Kinetics and Biomedicine, among others, offering interested researchers a convenient reference guide to these l...

  6. Lundi 25 août 2014 - Professeur Jacques Bittoun

    CERN Multimedia

    Gadmer, Jean-Claude

    2014-01-01

    Président Université Paris-Sud République française J. Bittoun visite la caverne expérimentale d' ATLAS avec le Porte-Parole de la Collaboration ATLAS D. Charlton, Collaboration ATLAS J.-B. Blanchard et ATLAS-France, physicien contact national I. Wingerter-Seez; visite le tunnel au Point 5 et signe le livre d'or avec le Chef adjoint du département faisceaux R. Garoby

  7. XV "Jacques-Louis Lions" Spanish-French School

    CERN Document Server

    Vázquez, Carlos; Coquel, Frédéric

    2014-01-01

    This book, based on the lecture notes from the XVth Spanish-French School on Numerical Simulation in Physics and Engineering, covers a range of advances in numerical simulation in physics and engineering. The main subjects addressed are: biomechanics, stochastic calculus, geophysical flow simulation, and shock-capturing numerical methods for hyperbolic systems of partial differential equations. The book is mainly aimed at young graduate students in mathematics, engineering, and natural sciences who are starting to confront numerical simulation, either at a research level or in the field of industrial applications. It will also be helpful for researchers or even technicians who are working in an industrial environment and are interested in the state-of-the-art numerical techniques in these fields. Finally, the book will be useful as a textbook for master's or PhD level courses in mathematics, physics, or engineering.

  8. El concepto de locura en la obra de Jacques Lacan The Concept Of Madness In The Jacques Lacan Work's

    Directory of Open Access Journals (Sweden)

    Pablo D. Muñoz

    2008-12-01

    Full Text Available Desde sus primeros escritos Lacan distingue el concepto de locura del de psicosis, contradiciendo el uso común que los toma como equivalentes. Esta confusión produce efectos en la clínica psicoanalítica, por lo cual conviene aclarar y mantener su diferencia. Si bien los comentadores de su obra han reconocido esa distinción, no se ha destacado todo lo necesario la transformación que sufre el concepto de locura al final de la misma, ni se ha establecido con precisión su índole, sus alcances y consecuencias. Para hacerlo se propone explorar las diferencias entre locura y psicosis con el recurso de la teoría de nudos que Lacan emplea en dicho período, donde la psicosis es formalizada como una forma particular de anudamiento de los registros distinto del de la neurosis y la locura como su desanudamiento. En este trabajo se realiza un recorrido que enlaza las primeras referencias de Lacan sobre la locura con las recién mencionadas.First Lacan writings differentiates the "madness" concept from the other one of "psychosis", contradicting therefore the common use in language that takes them equivalent. This confusion can carry adverse effects in the psychoanalytic clinic. Thus is better to clarify and maintain its difference. Although Lacan comentators have recognized that distinction is not enough outstanded the transformation of the concept of "madness" at the his latest works, nor has settled down its nature, its reaches and consequences. In order to do it, we will explore the differences between "madness" and "psychosis" with his knots theory support, where the psychosis and neurosis like particular different form of knotting, and also defines "madness" like a registers untied. In this work is carried out a journey that connects the first references of Lacan about the madness with the last ones mentioned.

  9. Surface texture metrology for high precision surfaces

    DEFF Research Database (Denmark)

    Hansen, Hans Nørgaard; Gasparin, Stefania; Tosello, Guido

    2010-01-01

    This paper introduces some of the challenges related to surface texture measurement of high precision surfaces. The paper is presenting two case studies related to polished tool surfaces and micro part surfaces. In both cases measuring instrumentation, measurement procedure and the measurement...

  10. Surface texture metrology for high precision surfaces

    DEFF Research Database (Denmark)

    Hansen, Hans Nørgaard; Gasparin, Stefania; Tosello, Guido

    2010-01-01

    This paper introduces some of the challenges related to surface texture measurement of high precision surfaces. The paper is presenting two case studies related to polished tool surfaces and micro part surfaces. In both cases measuring instrumentation, measurement procedure and the measurement re...

  11. Toroidal surfaces compared with spherocylindrical surfaces

    Science.gov (United States)

    Malacara-Doblado, Daniel; Malacara-Hernandez, Daniel; Garcia-Marquez, Jorge L.

    1995-08-01

    Toroidal and sphero-cylindrical optical surfaces are two different kinds of surfaces (Menchaca and Malacara, 1986), but they are almost identical in the vicinity of the optical axis. The separation between these two surfaces increases when the distance to the optical axis increases. In this work the separation between these two surfaces outside of the central region is analytically studied.

  12. Representing Quadric Surfaces Using NURBS Surfaces

    Institute of Scientific and Technical Information of China (English)

    秦开怀

    1997-01-01

    A method for representing quadrc surfaces using NURBS is presented.By means of the necessary and sufficient conditons for NURBS curves to precisely represent circular arcs and other conics,quadric surfaces can be represented by NURBS surfaces with fewer control vertices.The method can be used not only for NURBS surface representation of quadric surfaces,but also for rounding polyhedrons.Many examples are given in the paper.

  13. Brain surface parameterization using Riemann surface structure.

    Science.gov (United States)

    Wang, Yalin; Gu, Xianfeng; Hayashi, Kiralee M; Chan, Tony F; Thompson, Paul M; Yau, Shing-Tung

    2005-01-01

    We develop a general approach that uses holomorphic 1-forms to parameterize anatomical surfaces with complex (possibly branching) topology. Rather than evolve the surface geometry to a plane or sphere, we instead use the fact that all orientable surfaces are Riemann surfaces and admit conformal structures, which induce special curvilinear coordinate systems on the surfaces. Based on Riemann surface structure, we can then canonically partition the surface into patches. Each of these patches can be conformally mapped to a parallelogram. The resulting surface subdivision and the parameterizations of the components are intrinsic and stable. To illustrate the technique, we computed conformal structures for several types of anatomical surfaces in MRI scans of the brain, including the cortex, hippocampus, and lateral ventricles. We found that the resulting parameterizations were consistent across subjects, even for branching structures such as the ventricles, which are otherwise difficult to parameterize. Compared with other variational approaches based on surface inflation, our technique works on surfaces with arbitrary complexity while guaranteeing minimal distortion in the parameterization. It also offers a way to explicitly match landmark curves in anatomical surfaces such as the cortex, providing a surface-based framework to compare anatomy statistically and to generate grids on surfaces for PDE-based signal processing.

  14. On surface approximation using developable surfaces

    DEFF Research Database (Denmark)

    Chen, H. Y.; Lee, I. K.; Leopoldseder, s.

    1999-01-01

    We introduce a method for approximating a given surface by a developable surface. It will be either a G(1) surface consisting of pieces of cones or cylinders of revolution or a G(r) NURBS developable surface. Our algorithm will also deal properly with the problems of reverse engineering and produce...... robust approximation of given scattered data. The presented technique can be applied in computer aided manufacturing, e.g. in shipbuilding. (C) 1999 Academic Press....

  15. On surface approximation using developable surfaces

    DEFF Research Database (Denmark)

    Chen, H. Y.; Lee, I. K.; Leopoldseder, S.

    1998-01-01

    We introduce a method for approximating a given surface by a developable surface. It will be either a G_1 surface consisting of pieces of cones or cylinders of revolution or a G_r NURBS developable surface. Our algorithm will also deal properly with the problems of reverse engineering and produce...... robust approximation of given scattered data. The presented technique can be applied in computer aided manufacturing, e.g. in shipbuilding....

  16. Dissolved inorganic nitrogen pools and surface flux under different brackish marsh vegetation types, common reed (Phragmites australis) and salt hay (Spartina patens)

    Science.gov (United States)

    Windham-Myers, L.

    2005-01-01

    The current expansion of Phragmites australis into the high marsh shortgrass (Spartina patens, Distichlis spicata) communities of eastern U.S. salt marshes provided an opportunity to identify the influence of vegetation types on pools and fluxes of dissolved inorganic nitrogen (DIN). Two brackish tidal marshes of the National Estuarine Research Reserve system were examined, Piermont Marsh of the Hudson River NERR in New York and Hog Island in the Jacques Coustaeu NERR of New Jersey. Pools of DIN in porewater and rates of DIN surface flux were compared in replicated pairs of recently-expanded P. australis and neighboring S. patens-dominated patches on the high marsh surface. Both marshes generally imported nitrate (NO3-) and exported ammonium (NH4+), such that overall DIN was exported. No differences in surface exchange of NO3- or NH4+ were observed between vegetation types. Depth-averaged porewater NH4+ concentrations over the entire growing season were 56% lower under P. australis than under S. patens (average 1.4 vs. 3.2 mg NH4+ L-1) with the most profound differences in November. Porewater profiles showed an accumulation of NH4+ at depth in S. patens and constant low concentrations in P. australis from the soil surface to 50 cm depth, with no significant differences in porewater salinity. Despite these profound differences in porewater, NH 4+ diffusion from soils of P. australis and S. patens were not measurably different, were similar to other published rates, and were well below estimated rates based on passive diffusion alone. Rapid adsorption and uptake by litter and microbes in surface soils of both communities may buffer NH4+ loss to flooding tides in both communities, thereby reducing the impact of P. australis invasion on NH4+ flux to flooding waters. ?? Springer 2005.

  17. The Aesthetics of Cultural Transfer in Langston Hughes's Translations of Works by Federico García Lorca,Nicoiās Guillén,and Jacques Roumain%兰斯顿·休斯文学翻译中的文化迁移美学

    Institute of Scientific and Technical Information of China (English)

    德丽塔·马丁·奥根索

    2008-01-01

    The introductory essay to The Collected Works of Langston Hughes,Vol.16,The Translations:Federico García Lorca,Nicoás Guillén,and Jacques Roumain,examines the coextensive relationship that Langston Hughes's writing had with the poetics of marginalization seen in three writers-Spanish poet and dramatist Lorca,Cuban poet and essayist Guillén,and Haitian poet and novelist Roumain.The above-mentioned essay was the point of departure for further study into the concept of cultural transfer through literary translation.That is,the author who translates aspires to find significance in meaning between the literature written in the source language and the target language.Moreover,that writer-turned translator desires to portray a similarity of experience between his own works and those of writers from other nations.Hughes's translation of Lorca's Bodas de sangre (Blood Wedding),Guilltn's Cuba Libre,and Roumain's Gouverneurs de la Roseé (Masters of the Dew) provides abundant examples of his twin objectives of achieving effective cross-cultural transference and illustrating multi-formed (across genres) aesthetic expressions of corresponding experience (s),as well as his deft use of language to achieve both.This paper will examine parts from each of the three translations to show the global dialogue in which Hughes's poetics engages through his translation of works by authors from three different cultural,linguistic,and literary backgrounds.Furthermore,the essay will conclude with the notion that a judicious and effective translation process between literary traditions is essential to forging links among writers and their reading publics from various continents,which,in turn,sheds light on the national and international discourses and policies of the particular countries they represent.%的介绍文章探讨了兰斯顿·休斯的写作与西班牙诗人和戏剧家罗卡、古巴诗人和杂文家桂伦、海地诗人和小说家罗芒的作品中表现出来的边缘化

  18. Open algebraic surfaces

    CERN Document Server

    Miyanishi, Masayoshi

    2000-01-01

    Open algebraic surfaces are a synonym for algebraic surfaces that are not necessarily complete. An open algebraic surface is understood as a Zariski open set of a projective algebraic surface. There is a long history of research on projective algebraic surfaces, and there exists a beautiful Enriques-Kodaira classification of such surfaces. The research accumulated by Ramanujan, Abhyankar, Moh, and Nagata and others has established a classification theory of open algebraic surfaces comparable to the Enriques-Kodaira theory. This research provides powerful methods to study the geometry and topology of open algebraic surfaces. The theory of open algebraic surfaces is applicable not only to algebraic geometry, but also to other fields, such as commutative algebra, invariant theory, and singularities. This book contains a comprehensive account of the theory of open algebraic surfaces, as well as several applications, in particular to the study of affine surfaces. Prerequisite to understanding the text is a basic b...

  19. PREFACE: Vibrations at surfaces Vibrations at surfaces

    Science.gov (United States)

    Rahman, Talat S.

    2011-12-01

    This special issue is dedicated to the phenomenon of vibrations at surfaces—a topic that was indispensible a couple of decades ago, since it was one of the few phenomena capable of revealing the nature of binding at solid surfaces. For clean surfaces, the frequencies of modes with characteristic displacement patterns revealed how surface geometry, as well as the nature of binding between atoms in the surface layers, could be different from that in the bulk solid. Dispersion of the surface phonons provided further measures of interatomic interactions. For chemisorbed molecules on surfaces, frequencies and dispersion of the vibrational modes were also critical for determining adsorption sites. In other words, vibrations at surfaces served as a reliable means of extracting information about surface structure, chemisorption and overlayer formation. Experimental techniques, such as electron energy loss spectroscopy and helium-atom-surface scattering, coupled with infra-red spectroscopy, were continually refined and their resolutions enhanced to capture subtleties in the dynamics of atoms and molecules at surfaces. Theoretical methods, whether based on empirical and semi-empirical interatomic potential or on ab initio electronic structure calculations, helped decipher experimental observations and provide deeper insights into the nature of the bond between atoms and molecules in regions of reduced symmetry, as encountered on solid surfaces. Vibrations at surfaces were thus an integral part of the set of phenomena that characterized surface science. Dedicated workshops and conferences were held to explore the variety of interesting and puzzling features revealed in experimental and theoretical investigations of surface vibrational modes and their dispersion. One such conference, Vibrations at Surfaces, first organized by Harald Ibach in Juelich in 1980, continues to this day. The 13th International Conference on Vibrations at Surfaces was held at the University of

  20. Surface reconstruction by offset surface filtering

    Institute of Scientific and Technical Information of China (English)

    DONG Chen-shi; WANG Guo-zhao

    2005-01-01

    The problem of computing a piecewise linear approximation to a surface from its sample has been a focus of research in geometry modeling and graphics due to its widespread applications in computer aided design. In this paper, we give a new algorithm, to be called offset surface filtering (OSF) algorithm, which computes a piecewise-linear approximation of a smooth surface from a finite set of cloud points. The algorithm has two main stages. First, the surface normal on every point is estimated by the least squares best fitting plane method. Second, we construct a restricted Delaunay triangulation, which is a tubular neighborhood of the surface defined by two offset surfaces. The algorithm is simple and robust. We describe an implementation of it and show example outputs.

  1. Surfaces with Natural Ridges

    DEFF Research Database (Denmark)

    Brander, David; Markvorsen, Steen

    2015-01-01

    We discuss surfaces with singularities, both in mathematics and in the real world. For many types of mathematical surface, singularities are natural and can be regarded as part of the surface. The most emblematic example is that of surfaces of constant negative Gauss curvature, all of which...

  2. Surfaces with Natural Ridges

    DEFF Research Database (Denmark)

    Brander, David; Markvorsen, Steen

    2015-01-01

    We discuss surfaces with singularities, both in mathematics and in the real world. For many types of mathematical surface, singularities are natural and can be regarded as part of the surface. The most emblematic example is that of surfaces of constant negative Gauss curvature, all of which...

  3. Approximation by Cylinder Surfaces

    DEFF Research Database (Denmark)

    Randrup, Thomas

    1997-01-01

    We present a new method for approximation of a given surface by a cylinder surface. It is a constructive geometric method, leading to a monorail representation of the cylinder surface. By use of a weighted Gaussian image of the given surface, we determine a projection plane. In the orthogonal...

  4. Fast disinfecting antimicrobial surfaces.

    Science.gov (United States)

    Madkour, Ahmad E; Dabkowski, Jeffery M; Nusslein, Klaus; Tew, Gregory N

    2009-01-20

    Silicon wafers and glass surfaces were functionalized with facially amphiphilic antimicrobial copolymers using the "grafting from" technique. Surface-initiated atom transfer radical polymerization (ATRP) was used to grow poly(butylmethacrylate)-co-poly(Boc-aminoethyl methacrylate) from the surfaces. Upon Boc-deprotection, these surfaces became highly antimicrobial and killed S. aureus and E. coli 100% in less than 5 min. The molecular weight and grafting density of the polymer were controlled by varying the polymerization time and initiator surface density. Antimicrobial studies showed that the killing efficiency of these surfaces was independent of polymer layer thickness or grafting density within the range of surfaces studied.

  5. Biocompatible implant surface treatments.

    Science.gov (United States)

    Pattanaik, Bikash; Pawar, Sudhir; Pattanaik, Seema

    2012-01-01

    Surface plays a crucial role in biological interactions. Surface treatments have been applied to metallic biomaterials in order to improve their wear properties, corrosion resistance, and biocompatibility. A systematic review was performed on studies investigating the effects of implant surface treatments on biocompatibility. We searched the literature using PubMed, electronic databases from 1990 to 2009. Key words such as implant surface topography, surface roughness, surface treatment, surface characteristics, and surface coatings were used. The search was restricted to English language articles published from 1990 to December 2009. Additionally, a manual search in the major dental implant journals was performed. When considering studies, clinical studies were preferred followed by histological human studies, animal studies, and in vitro studies. A total of 115 articles were selected after elimination: clinical studies, 24; human histomorphometric studies, 11; animal histomorphometric studies, 46; in vitro studies, 34. The following observations were made in this review: · The focus has shifted from surface roughness to surface chemistry and a combination of chemical manipulations on the porous structure. More investigations are done regarding surface coatings. · Bone response to almost all the surface treatments was favorable. · Future trend is focused on the development of osteogenic implant surfaces. Limitation of this study is that we tried to give a broader overview related to implant surface treatments. It does not give any conclusion regarding the best biocompatible implant surface treatment investigated till date. Unfortunately, the eventually selected studies were too heterogeneous for inference of data.

  6. Computer aided surface representation

    Energy Technology Data Exchange (ETDEWEB)

    Barnhill, R E

    1987-11-01

    The aims of this research are the creation of new surface forms and the determination of geometric and physical properties of surfaces. The full sweep from constructive mathematics through the implementation of algorithms and the interactive computer graphics display of surfaces is utilized. Both three-dimensional and multi- dimensional surfaces are considered. Particular emphasis is given to the scientific computing solution of Department of Energy problems. The methods that we have developed and that we are proposing to develop allow applications such as: Producing smooth contour maps from measured data, such as weather maps. Modeling the heat distribution inside a furnace from sample measurements. Terrain modeling based on satellite pictures. The investigation of new surface forms includes the topics of triangular interpolants, multivariate interpolation, surfaces defined on surfaces and monotone and/or convex surfaces. The geometric and physical properties considered include contours, the intersection of surfaces, curvatures as a interrogation tool, and numerical integration.

  7. Nanofluids mediating surface forces.

    Science.gov (United States)

    Pilkington, Georgia A; Briscoe, Wuge H

    2012-11-01

    Fluids containing nanostructures, known as nanofluids, are increasingly found in a wide array of applications due to their unique physical properties as compared with their base fluids and larger colloidal suspensions. With several tuneable parameters such as the size, shape and surface chemistry of nanostructures, as well as numerous base fluids available, nanofluids also offer a new paradigm for mediating surface forces. Other properties such as local surface plasmon resonance and size dependent magnetism of nanostructures also present novel mechanisms for imparting tuneable surface interactions. However, our fundamental understanding, experimentally and theoretically, of how these parameters might affect surface forces remains incomplete. Here we review recent results on equilibrium and dynamic surface forces between macroscopic surfaces in nanofluids, highlighting the overriding trends in the correlation between the physical parameters that characterise nanofluids and the surface forces they mediate. We also discuss the challenges that confront existing surface force knowledge as a result of this new paradigm.

  8. Fluorinated silica microchannel surfaces

    Science.gov (United States)

    Kirby, Brian J.; Shepodd, Timothy Jon

    2005-03-15

    A method for surface modification of microchannels and capillaries. The method produces a chemically inert surface having a lowered surface free energy and improved frictional properties by attaching a fluorinated alkane group to the surface. The coating is produced by hydrolysis of a silane agent that is functionalized with either alkoxy or chloro ligands and an uncharged C.sub.3 -C.sub.10 fluorinated alkane chain. It has been found that the extent of surface coverage can be controlled by controlling the contact time from a minimum of about 2 minutes to a maximum of 120 minutes for complete surface coverage.

  9. Extremal surface barriers

    Energy Technology Data Exchange (ETDEWEB)

    Engelhardt, Netta; Wall, Aron C. [Department of Physics, University of California,Santa Barbara, CA 93106 (United States)

    2014-03-13

    We present a generic condition for Lorentzian manifolds to have a barrier that limits the reach of boundary-anchored extremal surfaces of arbitrary dimension. We show that any surface with nonpositive extrinsic curvature is a barrier, in the sense that extremal surfaces cannot be continuously deformed past it. Furthermore, the outermost barrier surface has nonnegative extrinsic curvature. Under certain conditions, we show that the existence of trapped surfaces implies a barrier, and conversely. In the context of AdS/CFT, these barriers imply that it is impossible to reconstruct the entire bulk using extremal surfaces. We comment on the implications for the firewall controversy.

  10. Designing bioinspired superoleophobic surfaces

    Science.gov (United States)

    Brown, Philip S.; Bhushan, Bharat

    2016-01-01

    Nature provides a range of functional surfaces, for example, water-repellent or superhydrophobic surfaces, most common among them the lotus leaf. While water-repellency is widespread in nature, oil-repellency is typically limited to surfaces submerged in water, such as fish scales. To achieve oleophobicity in air, inspiration must be taken from natural structures and chemistries that are not readily available in nature need to be introduced. Researchers usually turn to fluorinated materials to provide the low surface energy that, when combined with bioinspired surface topography, is the key to unlocking oil-repellency. This review presents the state-of-the-art in the fabrication of superoleophobic surfaces.

  11. Reactions at Solid Surfaces

    CERN Document Server

    Ertl, Gerhard

    2009-01-01

    Expanding on the ideas first presented in Gerhard Ertl's acclaimed Baker Lectures at Cornell University, Reactions at Solid Surfaces comprises an authoritative, self-contained, book-length introduction to surface reactions for both professional chemists and students alike. Outlining our present understanding of the fundamental processes underlying reactions at solid surfaces, the book provides the reader with a complete view of how chemistry works at surfaces, and how to understand and probe the dynamics of surface reactions. Comparing traditional surface probes with more modern ones, and brin

  12. On log surfaces

    CERN Document Server

    Fujino, Osamu

    2012-01-01

    This paper is an announcement of the minimal model theory for log surfaces in all characteristics and contains some related results including a simplified proof of the Artin-Keel contraction theorem in the surface case.

  13. Apollo Surface Panoramas

    Data.gov (United States)

    National Aeronautics and Space Administration — Apollo Surface Panoramas is a digital library of photographic panoramas that the Apollo astronauts took while exploring the Moon's surface. These images provide a...

  14. Laser textured surface gradients

    Science.gov (United States)

    Ta, Van Duong; Dunn, Andrew; Wasley, Thomas J.; Li, Ji; Kay, Robert W.; Stringer, Jonathan; Smith, Patrick J.; Esenturk, Emre; Connaughton, Colm; Shephard, Jonathan D.

    2016-05-01

    This work demonstrates a novel technique for fabricating surfaces with roughness and wettability gradients and their subsequent applications for chemical sensors. Surface roughness gradients on brass sheets are obtained directly by nanosecond laser texturing. When these structured surfaces are exposed to air, their wettability decreases with time (up to 20 days) achieving both spatial and temporal wettability gradients. The surfaces are responsive to organic solvents. Contact angles of a series of dilute isopropanol solutions decay exponentially with concentration. In particular, a fall of 132° in contact angle is observed on a surface gradient, one order of magnitude higher than the 14° observed for the unprocessed surface, when the isopropanol concentration increased from 0 to 15.6 wt%. As the wettability changes gradually over the surface, contact angle also changes correspondingly. This effect offers multi-sensitivity at different zones on the surface and is useful for accurate measurement of chemical concentration.

  15. Developable algebraic surfaces

    Institute of Scientific and Technical Information of China (English)

    CHEN Dongren; WANG Guojin

    2004-01-01

    An algebraic surface can be defined by an implicit polynomial equation F(x,y,z)=0. In this paper, general characterizations of developable algebraic surfaces of arbitrary degree are presented. Using the shift operators of the subscripts of Bézier ordinates, the uniform apparent discriminants of developable algebraic surfaces to their Bézier ordinates are given directly. To degree 2 algebraic surfaces, which are widely used in computer aided geometric design and graphics, all possible developable surface types are obtained. For more conveniently applying algebraic surfaces of high degree to computer aided geometric design, the notion of ε-quasi-developable surfaces is introduced, and an example of using a quasi-developable algebraic surface of degree 3 to interpolate three curves of degree 2 is given.

  16. Bonnet Ruled Surfaces

    Institute of Scientific and Technical Information of China (English)

    Filiz KANBAY

    2005-01-01

    We consider the Bonnet ruled surfaces which admit only one non-trivial isometry that preserves the principal curvatures. We determine the Bonnet ruled surfaces whose generators and orthogonal trajectories form a special net called an A-net.

  17. Surface Bubble Nucleation Stability

    NARCIS (Netherlands)

    Seddon, James Richard Thorley; Kooij, Ernst S.; Poelsema, Bene; Zandvliet, Henricus J.W.; Lohse, Detlef

    2011-01-01

    Recent research has revealed several different techniques for nanoscopic gas nucleation on submerged surfaces, with findings seemingly in contradiction with each other. In response to this, we have systematically investigated the occurrence of surface nanobubbles on a hydrophobized silicon substrate

  18. Biomaterials surface science

    CERN Document Server

    Taubert, Andreas; Rodriguez-Cabello, José Carlos

    2013-01-01

    The book provides an overview of the highly interdisciplinary field of surface science in the context of biological and biomedical applications. The covered topics range from micro- and nanostructuring for imparting functionality in a top-down manner to the bottom-up fabrication of gradient surfaces by self-assembly, from interfaces between biomaterials and living matter to smart, stimuli-responsive surfaces, and from cell and surface mechanics to the elucidation of cell-chip interactions in biomedical devices.

  19. PSC: protein surface classification.

    Science.gov (United States)

    Tseng, Yan Yuan; Li, Wen-Hsiung

    2012-07-01

    We recently proposed to classify proteins by their functional surfaces. Using the structural attributes of functional surfaces, we inferred the pairwise relationships of proteins and constructed an expandable database of protein surface classification (PSC). As the functional surface(s) of a protein is the local region where the protein performs its function, our classification may reflect the functional relationships among proteins. Currently, PSC contains a library of 1974 surface types that include 25,857 functional surfaces identified from 24,170 bound structures. The search tool in PSC empowers users to explore related surfaces that share similar local structures and core functions. Each functional surface is characterized by structural attributes, which are geometric, physicochemical or evolutionary features. The attributes have been normalized as descriptors and integrated to produce a profile for each functional surface in PSC. In addition, binding ligands are recorded for comparisons among homologs. PSC allows users to exploit related binding surfaces to reveal the changes in functionally important residues on homologs that have led to functional divergence during evolution. The substitutions at the key residues of a spatial pattern may determine the functional evolution of a protein. In PSC (http://pocket.uchicago.edu/psc/), a pool of changes in residues on similar functional surfaces is provided.

  20. Triangular bubble spline surfaces.

    Science.gov (United States)

    Kapl, Mario; Byrtus, Marek; Jüttler, Bert

    2011-11-01

    We present a new method for generating a [Formula: see text]-surface from a triangular network of compatible surface strips. The compatible surface strips are given by a network of polynomial curves with an associated implicitly defined surface, which fulfill certain compatibility conditions. Our construction is based on a new concept, called bubble patches, to represent the single surface patches. The compatible surface strips provide a simple [Formula: see text]-condition between two neighboring bubble patches, which are used to construct surface patches, connected with [Formula: see text]-continuity. For [Formula: see text], we describe the obtained [Formula: see text]-condition in detail. It can be generalized to any [Formula: see text]. The construction of a single surface patch is based on Gordon-Coons interpolation for triangles.Our method is a simple local construction scheme, which works uniformly for vertices of arbitrary valency. The resulting surface is a piecewise rational surface, which interpolates the given network of polynomial curves. Several examples of [Formula: see text], [Formula: see text] and [Formula: see text]-surfaces are presented, which have been generated by using our method. The obtained surfaces are visualized with reflection lines to demonstrate the order of smoothness.

  1. Surface and Interface Characterisation

    DEFF Research Database (Denmark)

    De Chiffre, Leonardo

    2006-01-01

    Surface physical analysis, i.e. topography characterisation, encompasses measurement, visualisation, and quantification. This is critical for both component form and for surface finish at macro-, micro- and nano-scales. The principal methods of surface topography measurement are stylus profilomet...

  2. Architectural Knitted Surfaces

    DEFF Research Database (Denmark)

    Mossé, Aurélie

    2010-01-01

    WGSN reports from the Architectural Knitted Surfaces workshop recently held at ShenkarCollege of Engineering and Design, Tel Aviv, which offered a cutting-edge insight into interactive knitted surfaces. With the increasing role of smart textiles in architecture, the Architectural Knitted Surfaces...

  3. Surface for dummies

    CERN Document Server

    Rathbone, Andy

    2014-01-01

    Make Microsoft's Surface work-and play-just the way you want it to Microsoft's Surface tablet has the features and personality you're looking for, with a robust environment for business computing that doesn't skimp on fun. Surface for Dummies, 2nd Edition explains how Windows 8.1 Pro and Windows RT differ, and helps you decide which Surface model is best for you. Step by step, this book walks you through both the hardware and software features of the Surface, including the touch cover and type cover, Windows RT and Windows 8.1 Pro operating systems, and the coveted Office Home & Student 2013 s

  4. Approximation by Cylinder Surfaces

    DEFF Research Database (Denmark)

    Randrup, Thomas

    1997-01-01

    We present a new method for approximation of a given surface by a cylinder surface. It is a constructive geometric method, leading to a monorail representation of the cylinder surface. By use of a weighted Gaussian image of the given surface, we determine a projection plane. In the orthogonal...... projection of the surface onto this plane, a reference curve is determined by use of methods for thinning of binary images. Finally, the cylinder surface is constructed as follows: the directrix of the cylinder surface is determined by a least squares method minimizing the distance to the points...... in the projection within a tolerance given by the reference curve, and the rulings are lines perpendicular to the projection plane. Application of the method in ship design is given....

  5. Computer aided surface representation

    Energy Technology Data Exchange (ETDEWEB)

    Barnhill, R.E.

    1990-02-19

    The central research problem of this project is the effective representation, computation, and display of surfaces interpolating to information in three or more dimensions. If the given information is located on another surface, then the problem is to construct a surface defined on a surface''. Sometimes properties of an already defined surface are desired, which is geometry processing''. Visualization of multivariate surfaces is possible by means of contouring higher dimensional surfaces. These problems and more are discussed below. The broad sweep from constructive mathematics through computational algorithms to computer graphics illustrations is utilized in this research. The breadth and depth of this research activity makes this research project unique.

  6. On rationally supported surfaces

    DEFF Research Database (Denmark)

    Gravesen, Jens; Juttler, B.; Sir, Z.

    2008-01-01

    We analyze the class of surfaces which are equipped with rational support functions. Any rational support function can be decomposed into a symmetric (even) and an antisymmetric (odd) part. We analyze certain geometric properties of surfaces with odd and even rational support functions....... In particular it is shown that odd rational support functions correspond to those rational surfaces which can be equipped with a linear field of normal vectors, which were discussed by Sampoli et al. (Sampoli, M.L., Peternell, M., Juttler, B., 2006. Rational surfaces with linear normals and their convolutions...... with rational surfaces. Comput. Aided Geom. Design 23, 179-192). As shown recently, this class of surfaces includes non-developable quadratic triangular Bezier surface patches (Lavicka, M., Bastl, B., 2007. Rational hypersurfaces with rational convolutions. Comput. Aided Geom. Design 24, 410426; Peternell, M...

  7. Positrons in surface physics

    Science.gov (United States)

    Hugenschmidt, Christoph

    2016-12-01

    Within the last decade powerful methods have been developed to study surfaces using bright low-energy positron beams. These novel analysis tools exploit the unique properties of positron interaction with surfaces, which comprise the absence of exchange interaction, repulsive crystal potential and positron trapping in delocalized surface states at low energies. By applying reflection high-energy positron diffraction (RHEPD) one can benefit from the phenomenon of total reflection below a critical angle that is not present in electron surface diffraction. Therefore, RHEPD allows the determination of the atom positions of (reconstructed) surfaces with outstanding accuracy. The main advantages of positron annihilation induced Auger-electron spectroscopy (PAES) are the missing secondary electron background in the energy region of Auger-transitions and its topmost layer sensitivity for elemental analysis. In order to enable the investigation of the electron polarization at surfaces low-energy spin-polarized positrons are used to probe the outermost electrons of the surface. Furthermore, in fundamental research the preparation of well defined surfaces tailored for the production of bound leptonic systems plays an outstanding role. In this report, it is envisaged to cover both the fundamental aspects of positron surface interaction and the present status of surface studies using modern positron beam techniques.

  8. DNA ELECTROPHORESIS AT SURFACES

    Energy Technology Data Exchange (ETDEWEB)

    RAFAILOVICH, MIRIAM; SOKOLOV, JONATHAN; GERSAPPE, DILIP

    2003-09-01

    During this year we performed two major projects: I. We developed a detailed theoretical model which complements our experiments on surface DNA electrophoresis. We found that it was possible to enhance the separation of DNA chains by imposing a chemical nanoscale pattern on the surface. This approach utilized the surface interaction effect of the DNA chains with the substrate and is a refinement to our previous method in which DNA chains were separated on homogeneous flat surfaces. By introducing the nano-patterns on the surface, the conformational changes of DNA chains of different lengths can be amplified, which results in the different friction strengths with the substrate surface. Our results also show that, when compared to the DNA electrophoresis performed on homogeneous flat surfaces, nanopatterned surfaces offer a larger window in choosing different surface interactions to achieve separation. II. In collaboration with a large international manufacturer of skin care products we also embarked on a project involving photo toxicity of titanium dioxide nanoparticles, which are a key ingredient in sunscreen and cosmetic lotions. The results clearly implicated the nanoparticles in catalyzing damage to chromosomal DNA. We then used this knowledge to develop a polymer/anti-oxidant coating which prevented the photocatalytic reaction on DNA while still retaining the UV absorptive properties of the nanoparticles. The standard gel electrophoresis was not sufficient in determining the extent of the DNA damage. The conclusions of this study were based predominantly on analysis obtained with the surface electrophoresis method.

  9. On orbit surfacing of thermal control surfaces

    Science.gov (United States)

    Racette, G. W.

    1984-01-01

    Substrates to be contaminated and contamination source were prepared. Additional information on paint spray method apparatus was obtained. Silver teflon second surface mirror samples and S 13 GLO paint samples were mounted, photographed under the microscope and measured to establish baseline data. Atomic oxygen cleaning and spray painting are being considered. Electrostatic powder and plasma spray coating systems appear to have serious drawbacks.

  10. Laser-surface interactions

    CERN Document Server

    Ganeev, Rashid A

    2014-01-01

    This book is about the interaction of laser radiation with various surfaces at variable parameters of radiation. As a basic principle of classification we chose the energetic or intensity level of interaction of laser radiation with the surfaces. These two characteristics of laser radiation are the most important parameters defining entire spectrum of the processes occurring on the surfaces during interaction with electromagnetic waves. This is a first book containing a whole spectrum of the laser-surface interactions distinguished by the ranges of used laser intensity. It combines the surface response starting from extremely weak laser intensities (~1 W cm-2) up to the relativistic intensities (~1020 W cm-2 and higher). The book provides the basic information about lasers and acquaints the reader with both common applications of laser-surface interactions (laser-related printers, scanners, barcode readers, discs, material processing, military, holography, medicine, etc) and unusual uses of the processes on t...

  11. Superhydrophobicity from microstructured surface

    Institute of Scientific and Technical Information of China (English)

    ZHENG Lijun; WU Xuedong; LOU Zeng; WU Dan

    2004-01-01

    Superhydrophobicity is referred to the wettability of a solid surface which has a water apparent contact angle greater than 150°. It has attracted great interest in both fundamental researches and practical applications. This paper discusses two models: Wenzel model and Cassie model, to describe the superhydrophobic states of surface. The effectsof surface morphology and microstructure on superhydrophobicity are discussed, and the internal relationship between Wenzel and Cassie states is presented. These two su perhydrophobic states can coexist and they present different properties on contact angle hysteresis. It is reported that the irreversible transition can be realized from Cassie state to Wenzel state under some certain conditions. This paper also gives a review of recent progresses in the strategies of fabricating superhydrophobic surfaces by designing microstructured or microtextured surfaces. Finally, the fundamental research and applications of superhydrophobic surfaces are prospected.

  12. Conversion electron surface imaging

    CERN Document Server

    Irwin, G M; Wehner, A

    1999-01-01

    A method of imaging the Moessbauer absorption over the surface of a sample based on counting conversion electrons emitted from the surface following resonant absorption of gamma radiation is described. This Conversion Electron Surface Imaging (CESI) method is somewhat analogous to Magnetic Resonance Imaging (MRI), particularly chemical shift imaging, and similar tomographic reconstruction techniques are involved in extracting the image. The theory behind the technique and a prototype device is described, as well as the results of proof-of-principle experiments which demonstrate the function of the device. Eventually this same prototype device will be part of a system to determine the spatial variation of the Moessbauer spectrum over the surface of a sample. Applications include imaging of variations of surface properties of steels and other iron containing alloys, as well as other surfaces over which sup 5 sup 7 Fe has been deposited.

  13. Designing bioinspired superoleophobic surfaces

    Directory of Open Access Journals (Sweden)

    Philip S. Brown

    2016-01-01

    Full Text Available Nature provides a range of functional surfaces, for example, water-repellent or superhydrophobic surfaces, most common among them the lotus leaf. While water-repellency is widespread in nature, oil-repellency is typically limited to surfaces submerged in water, such as fish scales. To achieve oleophobicity in air, inspiration must be taken from natural structures and chemistries that are not readily available in nature need to be introduced. Researchers usually turn to fluorinated materials to provide the low surface energy that, when combined with bioinspired surface topography, is the key to unlocking oil-repellency. This review presents the state-of-the-art in the fabrication of superoleophobic surfaces.

  14. Positrons in Surface Physics

    CERN Document Server

    Hugenschmidt, Christoph

    2016-01-01

    Within the last decade powerful methods have been developed to study surfaces using bright low-energy positron beams. These novel analysis tools exploit the unique properties of positron interaction with surfaces, which comprise the absence of exchange interaction, repulsive crystal potential and positron trapping in delocalized surface states at low energies. By applying reflection high-energy positron diffraction (RHEPD) one can benefit from the phenomenon of total reflection below a critical angle that is not present in electron surface diffraction. Therefore, RHEPD allows the determination of the atom positions of (reconstructed) surfaces with outstanding accuracy. The main advantages of positron annihilation induced Auger-electron spectroscopy (PAES) are the missing secondary electron background in the energy region of Auger-transitions and its topmost layer sensitivity for elemental analysis. In order to enable the investigation of the electron polarization at surfaces low-energy spin-polarized positron...

  15. Mirror reactor surface study

    Energy Technology Data Exchange (ETDEWEB)

    Hunt, A. L.; Damm, C. C.; Futch, A. H.; Hiskes, J. R.; Meisenheimer, R. G.; Moir, R. W.; Simonen, T. C.; Stallard, B. W.; Taylor, C. E.

    1976-09-01

    A general survey is presented of surface-related phenomena associated with the following mirror reactor elements: plasma first wall, ion sources, neutral beams, director converters, vacuum systems, and plasma diagnostics. A discussion of surface phenomena in possible abnormal reactor operation is included. Several studies which appear to merit immediate attention and which are essential to the development of mirror reactors are abstracted from the list of recommended areas for surface work. The appendix contains a discussion of the fundamentals of particle/surface interactions. The interactions surveyed are backscattering, thermal desorption, sputtering, diffusion, particle ranges in solids, and surface spectroscopic methods. A bibliography lists references in a number of categories pertinent to mirror reactors. Several complete published and unpublished reports on surface aspects of current mirror plasma experiments and reactor developments are also included.

  16. Ruled Laguerre minimal surfaces

    KAUST Repository

    Skopenkov, Mikhail

    2011-10-30

    A Laguerre minimal surface is an immersed surface in ℝ 3 being an extremal of the functional ∫ (H 2/K-1)dA. In the present paper, we prove that the only ruled Laguerre minimal surfaces are up to isometry the surfaces ℝ (φλ) = (Aφ, Bφ, Cφ + D cos 2φ) + λ(sin φ, cos φ, 0), where A,B,C,D ε ℝ are fixed. To achieve invariance under Laguerre transformations, we also derive all Laguerre minimal surfaces that are enveloped by a family of cones. The methodology is based on the isotropic model of Laguerre geometry. In this model a Laguerre minimal surface enveloped by a family of cones corresponds to a graph of a biharmonic function carrying a family of isotropic circles. We classify such functions by showing that the top view of the family of circles is a pencil. © 2011 Springer-Verlag.

  17. Impact of surface chemistry

    OpenAIRE

    2010-01-01

    The applications of molecular surface chemistry in heterogeneous catalyst technology, semiconductor-based technology, medical technology, anticorrosion and lubricant technology, and nanotechnology are highlighted in this perspective. The evolution of surface chemistry at the molecular level is reviewed, and the key roles of surface instrumentation developments for in situ studies of the gas–solid, liquid–solid, and solid–solid interfaces under reaction conditions are emphasized.

  18. Impact of surface chemistry

    Science.gov (United States)

    Somorjai, Gabor A.; Li, Yimin

    2011-01-01

    The applications of molecular surface chemistry in heterogeneous catalyst technology, semiconductor-based technology, medical technology, anticorrosion and lubricant technology, and nanotechnology are highlighted in this perspective. The evolution of surface chemistry at the molecular level is reviewed, and the key roles of surface instrumentation developments for in situ studies of the gas–solid, liquid–solid, and solid–solid interfaces under reaction conditions are emphasized. PMID:20880833

  19. Geodesics on Surfaces

    OpenAIRE

    2016-01-01

    We study geodesics on surfaces in the setting of classical differential geometry. We define the curvature of curves and surfaces in three-space and use the fundamental forms of a surface to measure lengths, angles, and areas. We follow Riemann and adopt a more abstract approach, and use tensor notation to discuss Gaussian curvature, Gauss's Theorema Egregium, geodesic curves, and the Gauss-Bonnet theorem. Properties of geodesics are proven by variational methods, showing the connection betwee...

  20. Running surface couplings

    OpenAIRE

    1995-01-01

    We discuss the renormalization group improved effective action and running surface couplings in curved spacetime with boundary. Using scalar self-interacting theory as an example, we study the influence of the boundary effects to effective equations of motion in spherical cap and the relevance of surface running couplings to quantum cosmology and symmetry breaking phenomenon. Running surface couplings in the asymptotically free SU(2) gauge theory are found.

  1. Encyclopedia of analytical surfaces

    CERN Document Server

    Krivoshapko, S N

    2015-01-01

    This encyclopedia presents an all-embracing collection of analytical surface classes. It provides concise definitions  and description for more than 500 surfaces and categorizes them in 38 classes of analytical surfaces. All classes are cross references to the original literature in an excellent bibliography. The encyclopedia is of particular interest to structural and civil engineers and serves as valuable reference for mathematicians.

  2. Cleaning and surface properties

    CERN Document Server

    Taborelli, M

    2007-01-01

    Principles of precision cleaning for ultra high vacuum applications are reviewed together with the techniques for the evaluation of surface cleanliness. Methods to verify the effectiveness of cleaning procedures are discussed. Examples are presented to illustrate the influence of packaging and storage on the recontamination of the surface after cleaning. Finally, the effect of contamination on some relevant surface properties, like secondary electron emission and wettability is presented.

  3. Designing bioinspired superoleophobic surfaces

    OpenAIRE

    Philip S. Brown; Bharat Bhushan

    2016-01-01

    Nature provides a range of functional surfaces, for example, water-repellent or superhydrophobic surfaces, most common among them the lotus leaf. While water-repellency is widespread in nature, oil-repellency is typically limited to surfaces submerged in water, such as fish scales. To achieve oleophobicity in air, inspiration must be taken from natural structures and chemistries that are not readily available in nature need to be introduced. Researchers usually turn to fluorinated materials t...

  4. SILICA SURFACED CARBON FIBERS.

    Science.gov (United States)

    carbon fibers . Several economical and simple processes were developed for obtaining research quantities of silica surfaced carbon filaments. Vat dipping processes were utilized to deposit an oxide such as silica onto the surface and into the micropores of available carbon or graphite base fibers. High performance composite materials were prepared with the surface treated carbon fibers and various resin matrices. The ablative characteristics of these composites were very promising and exhibited fewer limitations than either silica or...treated

  5. Surface finish measurement studies

    Science.gov (United States)

    Teague, E. C.

    1983-01-01

    The performance of stylus instruments for measuring the topography of National Transonic Facility (NTF) model surfaces both for monitoring during fabrication and as an absolute measurement of topography was evaluated. It was found that the shop-grade instruments can damage the surface of models and that their use for monitoring fabrication procedures can lead to surface finishes that are substantially out of range in critical areas of the leading edges. The development of a prototype light-scattering instrument which would allow for rapid assessment of the surface finish of a model is also discussed.

  6. Surface science an introduction

    CERN Document Server

    Hudson, John

    1991-01-01

    The whole field of surface science is covered in this work. Starting with a description of the structure and thermodynamics of clean surfaces, the book goes on to discuss kinetic theory of gases and molecular beam formation. This is followed by a largesection on gas-surface interactions, and another major section on energetic particle-surface interactions. The final chapter provides the background to crystal nucleation and growth. The approach adopted is interdisciplinary and slanted towards theexperimental side, with practical analytical techniques being used to illustrate general princi

  7. Surface nanobubbles and nanodroplets

    Science.gov (United States)

    Lohse, Detlef; Zhang, Xuehua

    2015-07-01

    Surface nanobubbles are nanoscopic gaseous domains on immersed substrates which can survive for days. They were first speculated to exist about 20 years ago, based on stepwise features in force curves between two hydrophobic surfaces, eventually leading to the first atomic force microscopy (AFM) image in 2000. While in the early years it was suspected that they may be an artifact caused by AFM, meanwhile their existence has been confirmed with various other methods, including through direct optical observation. Their existence seems to be paradoxical, as a simple classical estimate suggests that they should dissolve in microseconds, due to the large Laplace pressure inside these nanoscopic spherical-cap-shaped objects. Moreover, their contact angle (on the gas side) is much smaller than one would expect from macroscopic counterparts. This review will not only give an overview on surface nanobubbles, but also on surface nanodroplets, which are nanoscopic droplets (e.g., of oil) on (hydrophobic) substrates immersed in water, as they show similar properties and can easily be confused with surface nanobubbles and as they are produced in a similar way, namely, by a solvent exchange process, leading to local oversaturation of the water with gas or oil, respectively, and thus to nucleation. The review starts with how surface nanobubbles and nanodroplets can be made, how they can be observed (both individually and collectively), and what their properties are. Molecular dynamic simulations and theories to account for the long lifetime of the surface nanobubbles are then reported on. The crucial element contributing to the long lifetime of surface nanobubbles and nanodroplets is pinning of the three-phase contact line at chemical or geometric surface heterogeneities. The dynamical evolution of the surface nanobubbles then follows from the diffusion equation, Laplace's equation, and Henry's law. In particular, one obtains stable surface nanobubbles when the gas influx from

  8. Surface chemistry essentials

    CERN Document Server

    Birdi, K S

    2013-01-01

    Surface chemistry plays an important role in everyday life, as the basis for many phenomena as well as technological applications. Common examples range from soap bubbles, foam, and raindrops to cosmetics, paint, adhesives, and pharmaceuticals. Additional areas that rely on surface chemistry include modern nanotechnology, medical diagnostics, and drug delivery. There is extensive literature on this subject, but most chemistry books only devote one or two chapters to it. Surface Chemistry Essentials fills a need for a reference that brings together the fundamental aspects of surface chemistry w

  9. Anodized dental implant surface

    Directory of Open Access Journals (Sweden)

    Sunil Kumar Mishra

    2017-01-01

    Full Text Available Purpose: Anodized implants with moderately rough surface were introduced around 2000. Whether these implants enhanced biologic effect to improve the environment for better osseointegration was unclear. The purpose of this article was to review the literature available on anodized surface in terms of their clinical success rate and bone response in patients till now. Materials and Methods: A broad electronic search of MEDLINE and PubMed databases was performed. A focus was made on peer-reviewed dental journals. Only articles related to anodized implants were included. Both animal and human studies were included. Results: The initial search of articles resulted in 581 articles on anodized implants. The initial screening of titles and abstracts resulted in 112 full-text papers; 40 animal studies, 16 studies on cell adhesion and bacterial adhesion onto anodized surfaced implants, and 47 human studies were included. Nine studies, which do not fulfill the inclusion criteria, were excluded. Conclusions: The long-term studies on anodized surface implants do favor the surface, but in most of the studies, anodized surface is compared with that of machined surface, but not with other surfaces commercially available. Anodized surface in terms of clinical success rate in cases of compromised bone and immediately extracted sockets has shown favorable success.

  10. Anodized dental implant surface.

    Science.gov (United States)

    Mishra, Sunil Kumar; Kumar, Muktadar Anand; Chowdhary, Ramesh

    2017-01-01

    Anodized implants with moderately rough surface were introduced around 2000. Whether these implants enhanced biologic effect to improve the environment for better osseointegration was unclear. The purpose of this article was to review the literature available on anodized surface in terms of their clinical success rate and bone response in patients till now. A broad electronic search of MEDLINE and PubMed databases was performed. A focus was made on peer-reviewed dental journals. Only articles related to anodized implants were included. Both animal and human studies were included. The initial search of articles resulted in 581 articles on anodized implants. The initial screening of titles and abstracts resulted in 112 full-text papers; 40 animal studies, 16 studies on cell adhesion and bacterial adhesion onto anodized surfaced implants, and 47 human studies were included. Nine studies, which do not fulfill the inclusion criteria, were excluded. The long-term studies on anodized surface implants do favor the surface, but in most of the studies, anodized surface is compared with that of machined surface, but not with other surfaces commercially available. Anodized surface in terms of clinical success rate in cases of compromised bone and immediately extracted sockets has shown favorable success.

  11. Microbiological surface sampling cart

    Science.gov (United States)

    Wilkins, J. R.; Mills, S. M.

    1972-01-01

    Mobile sampling cart automatically swabs surfaces for the recovery of microorganisms. Unit operates without human involvement and provides for control of swabbing speed, rotation of cotton swab, and the pressure and angle applied to swab. Capability of reverse direction is also available. Sampling cart use is limited to flat surfaces.

  12. Bacteria-surface interactions.

    Science.gov (United States)

    Tuson, Hannah H; Weibel, Douglas B

    2013-05-14

    The interaction of bacteria with surfaces has important implications in a range of areas, including bioenergy, biofouling, biofilm formation, and the infection of plants and animals. Many of the interactions of bacteria with surfaces produce changes in the expression of genes that influence cell morphology and behavior, including genes essential for motility and surface attachment. Despite the attention that these phenotypes have garnered, the bacterial systems used for sensing and responding to surfaces are still not well understood. An understanding of these mechanisms will guide the development of new classes of materials that inhibit and promote cell growth, and complement studies of the physiology of bacteria in contact with surfaces. Recent studies from a range of fields in science and engineering are poised to guide future investigations in this area. This review summarizes recent studies on bacteria-surface interactions, discusses mechanisms of surface sensing and consequences of cell attachment, provides an overview of surfaces that have been used in bacterial studies, and highlights unanswered questions in this field.

  13. Pseudospherical surfaces with singularities

    DEFF Research Database (Denmark)

    Brander, David

    2016-01-01

    We study a generalization of constant Gauss curvature −1 surfaces in Euclidean 3-space, based on Lorentzian harmonic maps, that we call pseudospherical frontals. We analyse the singularities of these surfaces, dividing them into those of characteristic and non-characteristic type. We give methods...

  14. Environmental surface asepsis.

    Science.gov (United States)

    Palenik, Charles John

    2005-09-01

    Environmental surface disinfection is easily accomplished with precleaning and disinfection techniques, and prepared surfaces or difficult-to-clean items can be covered with impermeable barriers. When carried out effectively, both practitioners and patients are protected from exposure to microorganisms that transmit disease and cause illness.

  15. Isotopic Implicit Surface Meshing

    NARCIS (Netherlands)

    Boissonnat, Jean-Daniel; Cohen-Steiner, David; Vegter, Gert

    2004-01-01

    This paper addresses the problem of piecewise linear approximation of implicit surfaces. We first give a criterion ensuring that the zero-set of a smooth function and the one of a piecewise linear approximation of it are isotopic. Then, we deduce from this criterion an implicit surface meshing algor

  16. Formation on grain surfaces

    NARCIS (Netherlands)

    Cazaux, S; Tielens, AGGM

    2004-01-01

    The most abundant interstellar molecule, H-2, is generally thought to form by recombination of H atoms on grain surfaces. On surfaces, hydrogen atoms can be physisorbed and chemisorbed and their mobility can be governed by quantum mechanical tunneling or thermal hopping. We have developed a model fo

  17. Physical chemistry of surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Adamson, A.

    1990-01-01

    This book covers surface chemistry and selected aspects f colloid chemistry. The text covers such areas as structure and thermodynamics of liquid interfaces; electrical aspects of surface chemistry; microscopy and spectroscopy of solid interfaces; nucleation; contact angle; adsorption from solution; friction and adhesion; lubrication; and chemisorption and catalysis.

  18. Workbench surface editor of brain cortical surface

    Science.gov (United States)

    Dow, Douglas E.; Nowinski, Wieslaw L.; Serra, Luis

    1996-04-01

    We have developed a 3D reach-in tool to manually reconstruct 3D cortical surface patches from 2D brain atlas images. The first application of our cortex editor is building 3D functional maps, specifically Brodmann's areas. This tool may also be useful in clinical practice to adjust incorrectly mapped atlas regions due to the deforming effect of lesions. The cortex editor allows a domain expert to control the correlation of control points across slices. Correct correlation has been difficult for 3D reconstruction algorithms because the atlas slices are far apart and because of the complex topology of the cortex which differs so much from slice to slice. Also, higher precision of the resulting surfaces is demanded since these define 3D brain atlas features upon which future stereotactic surgery may be based. The cortex editor described in this paper provides a tool suitable for a domain expert to use in defining the 3D surface of a Brodmann's area.

  19. Real estate surfaces appraisal

    Directory of Open Access Journals (Sweden)

    Marina Ciuna

    2014-07-01

    Full Text Available In the appraisal of the market value of the properties are applied two important surface indexes: the market surface ratio of the secondary surfaces and the ratio of the site value to total value (allocation method. The measure of both these indexes can be revealed difficult: the data collection of the surface trade ratio in the market can get different results and in practice often the valuer refolds on the fixed coefficients brought in the handbooks and in the circulars of the public administration; the appraisal of the ratio of the site, especially in the central zones and for ancient buildings, where besides the incidence is higher, is developed extrapolating the ratios from the peripheral zones for new building or falling back on the publications of real estate sector.For the market comparison methods are proposed a series of test of surface trade ratio and land value ratio to foresee the effect on the appraisal result.

  20. Surface enhanced Raman scattering

    CERN Document Server

    Furtak, Thomas

    1982-01-01

    In the course of the development of surface science, advances have been identified with the introduction of new diagnostic probes for analytical characterization of the adsorbates and microscopic structure of surfaces and interfaces. Among the most recently de­ veloped techniques, and one around which a storm of controversy has developed, is what has now been earmarked as surface enhanced Raman scattering (SERS). Within this phenomenon, molecules adsorbed onto metal surfaces under certain conditions exhibit an anomalously large interaction cross section for the Raman effect. This makes it possible to observe the detailed vibrational signature of the adsorbate in the ambient phase with an energy resolution much higher than that which is presently available in electron energy loss spectroscopy and when the surface is in contact with a much larger amount of material than that which can be tolerated in infrared absorption experiments. The ability to perform vibrational spectroscopy under these conditions would l...

  1. Rough Surface Contact

    Directory of Open Access Journals (Sweden)

    T Nguyen

    2017-06-01

    Full Text Available This paper studies the contact of general rough curved surfaces having nearly identical geometries, assuming the contact at each differential area obeys the model proposed by Greenwood and Williamson. In order to account for the most general gross geometry, principles of differential geometry of surface are applied. This method while requires more rigorous mathematical manipulations, the fact that it preserves the original surface geometries thus makes the modeling procedure much more intuitive. For subsequent use, differential geometry of axis-symmetric surface is considered instead of general surface (although this “general case” can be done as well in Chapter 3.1. The final formulas for contact area, load, and frictional torque are derived in Chapter 3.2.

  2. Surface nanoscale axial photonics

    CERN Document Server

    Sumetsky, M

    2011-01-01

    Dense photonic integration promises to revolutionize optical computing and communications. However, efforts towards this goal face unacceptable attenuation of light caused by surface roughness in microscopic devices. Here we address this problem by introducing Surface Nanoscale Axial Photonics (SNAP). The SNAP platform is based on whispering gallery modes circulating around the optical fiber surface and undergoing slow axial propagation readily described by the one-dimensional Schr\\"odinger equation. These modes can be steered with dramatically small nanoscale variation of the fiber radius, which is quite simple to introduce in practice. The extremely low loss of SNAP devices is achieved due to the fantastically low surface roughness inherent in a drawn fiber surface. In excellent agreement with the developed theory, we experimentally demonstrate localization of light in quantum wells, halting light by a point source, tunneling through potential barriers, dark states, etc. This demonstration, prototyping basi...

  3. Defects at oxide surfaces

    CERN Document Server

    Thornton, Geoff

    2015-01-01

    This book presents the basics and characterization of defects at oxide surfaces. It provides a state-of-the-art review of the field, containing information to the various types of surface defects, describes analytical methods to study defects, their chemical activity and the catalytic reactivity of oxides. Numerical simulations of defective structures complete the picture developed. Defects on planar surfaces form the focus of much of the book, although the investigation of powder samples also form an important part. The experimental study of planar surfaces opens the possibility of applying the large armoury of techniques that have been developed over the last half-century to study surfaces in ultra-high vacuum. This enables the acquisition of atomic level data under well-controlled conditions, providing a stringent test of theoretical methods. The latter can then be more reliably applied to systems such as nanoparticles for which accurate methods of characterization of structure and electronic properties ha...

  4. PREFACE: Nanostructured surfaces

    Science.gov (United States)

    Palmer, Richard E.

    2003-10-01

    We can define nanostructured surfaces as well-defined surfaces which contain lateral features of size 1-100 nm. This length range lies well below the micron regime but equally above the Ångstrom regime, which corresponds to the interatomic distances on single-crystal surfaces. This special issue of Journal of Physics: Condensed Matter presents a collection of twelve papers which together address the fabrication, characterization, properties and applications of such nanostructured surfaces. Taken together they represent, in effect, a status report on the rapid progress taking place in this burgeoning area. The first four papers in this special issue have been contributed by members of the European Research Training Network ‘NanoCluster’, which is concerned with the deposition, growth and characterization of nanometre-scale clusters on solid surfaces—prototypical examples of nanoscale surface features. The paper by Vandamme is concerned with the fundamentals of the cluster-surface interaction; the papers by Gonzalo and Moisala address, respectively, the optical and catalytic properties of deposited clusters; and the paper by van Tendeloo reports the application of transmission electron microscopy (TEM) to elucidate the surface structure of spherical particles in a catalyst support. The fifth paper, by Mendes, is also the fruit of a European Research Training Network (‘Micro-Nano’) and is jointly contributed by three research groups; it reviews the creation of nanostructured surface architectures from chemically-synthesized nanoparticles. The next five papers in this special issue are all concerned with the characterization of nanostructured surfaces with scanning tunnelling microscopy (STM) and atomic force microscopy (AFM). The papers by Bolotov, Hamilton and Dunstan demonstrate that the STM can be employed for local electrical measurements as well as imaging, as illustrated by the examples of deposited clusters, model semiconductor structures and real

  5. de Sitter Extremal Surfaces

    CERN Document Server

    Narayan, K

    2015-01-01

    We study extremal surfaces in de Sitter space in the Poincare slicing in the upper patch, anchored on spatial subregions at the future boundary ${\\cal I}^+$, restricted to constant boundary Euclidean time slices (focussing on strip subregions). We find real extremal surfaces of minimal area as the boundaries of past lightcone wedges of the subregions in question: these are null surfaces with vanishing area. We find also complex extremal surfaces as complex extrema of the area functional, and the area is not always real-valued. In $dS_4$ the area is real and has some structural resemblance with entanglement entropy in a dual $CFT_3$. There are parallels with analytic continuation from the Ryu-Takayanagi expressions for holographic entanglement entropy in $AdS$. We also discuss extremal surfaces in the $dS$ black brane and the de Sitter "bluewall" studied previously. The $dS_4$ black brane complex surfaces exhibit a real finite cutoff-independent extensive piece. In the bluewall geometry, there are real surface...

  6. Dynamics at Surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Sylvia Ceyer, Nancy Ryan Gray

    2010-05-04

    The 2009 Gordon Conference on Dynamics at Surfaces is the 30th anniversary of a meeting held every two years that is attended by leading researchers in the area of experimental and theoretical dynamics at liquid and solid surfaces. The conference focuses on the dynamics of the interaction of molecules with either liquid or solid surfaces, the dynamics of the outermost layer of liquid and solid surfaces and the dynamics at the liquid-solid interface. Specific topics that are featured include state-to-state dynamics, non-adiabatic interactions in molecule-metal systems, photon induced desorption from semiconductor and metal surfaces, ultrafast x-ray and electron diffraction as probes of the dynamics of ablation, ultrafast vibrational spectroscopy of water surface dynamics, dynamics of a single adsorbate, growth at nano-scale mineral surfaces, dynamics of atom recombination on interstellar dust grains and the dynamics of the interaction of water with lipid bilayers. The conference brings together investigators from a variety of scientific disciplines including chemistry, physics, materials science, geology and biophysics.

  7. Surface modes in physics

    CERN Document Server

    Sernelius, Bo E

    2011-01-01

    Electromagnetic surface modes are present at all surfaces and interfaces between material of different dielectric properties. These modes have very important effects on numerous physical quantities: adhesion, capillary force, step formation and crystal growth, the Casimir effect etc. They cause surface tension and wetting and they give rise to forces which are important e.g. for the stability of colloids.This book is a useful and elegant approach to the topic, showing how the concept of electromagnetic modes can be developed as a unifying theme for a range of condensed matter physics. The

  8. Advanced Surface Technology

    DEFF Research Database (Denmark)

    Møller, Per; Nielsen, Lars Pleht

    This new significant book on advanced modern surface technology in all its variations, is aimed at both teaching at engineering schools and practical application in industry. The work covers all the significant aspects of modern surface technology and also describes how new advanced techniques make......, nitriding, carbonitriding, and many other lesser-known thermochemical processes used for solving technological problems. The book is richly illustrated with pictures and figures showing how the technology creates new innovative solutions for industry and how surfaces are becoming integral to the function...

  9. Nonlinear surface electromagnetic phenomena

    CERN Document Server

    Ponath, H-E

    1991-01-01

    In recent years the physics of electromagnetic surface phenomena has developed rapidly, evolving into technologies for communications and industry, such as fiber and integrated optics. The variety of phenomena based on electromagnetism at surfaces is rich and this book was written with the aim of summarizing the available knowledge in selected areas of the field. The book contains reviews written by solid state and optical physicists on the nonlinear interaction of electromagnetic waves at and with surfaces and films. Both the physical phenomena and some potential applications are

  10. Localized Acoustic Surface Modes

    KAUST Repository

    Farhat, Mohamed

    2015-08-04

    We introduce the concept of localized acoustic surface modes (ASMs). We demonstrate that they are induced on a two-dimensional cylindrical rigid surface with subwavelength corrugations under excitation by an incident acoustic plane wave. Our results show that the corrugated rigid surface is acoustically equivalent to a cylindrical scatterer with uniform mass density that can be represented using a Drude-like model. This, indeed, suggests that plasmonic-like acoustic materials can be engineered with potential applications in various areas including sensing, imaging, and cloaking.

  11. Surface science techniques

    CERN Document Server

    Walls, JM

    2013-01-01

    This volume provides a comprehensive and up to the minute review of the techniques used to determine the nature and composition of surfaces. Originally published as a special issue of the Pergamon journal Vacuum, it comprises a carefully edited collection of chapters written by specialists in each of the techniques and includes coverage of the electron and ion spectroscopies, as well as the atom-imaging methods such as the atom probe field ion microscope and the scanning tunnelling microscope. Surface science is an important area of study since the outermost surface layers play a crucial role

  12. Architectural Knitted Surfaces

    DEFF Research Database (Denmark)

    Mossé, Aurélie

    2010-01-01

    WGSN reports from the Architectural Knitted Surfaces workshop recently held at ShenkarCollege of Engineering and Design, Tel Aviv, which offered a cutting-edge insight into interactive knitted surfaces. With the increasing role of smart textiles in architecture, the Architectural Knitted Surfaces...... workshop brought together architects and interior and textile designers to highlight recent developments in intelligent knitting. The five-day workshop was led by architects Ayelet Karmon and Mette Ramsgaard Thomsen, together with Amir Cang and Eyal Sheffer from the Knitting Laboratory, in collaboration...... with Amir Marcowitz and Yair Reshef for their expertise in interaction design....

  13. Land Surface Weather Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — METAR is the international standard code format for hourly surface weather observations. The acronym roughly translates from French as Aviation Routine Weather...

  14. Uruguay - Surface Weather Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Surface weather observation forms for 26 stations in Uruguay. Period of record 1896-2005, with two to eight observations per day. Files created through a...

  15. Mexico - Surface Weather Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Mexican Surface Daily Observations taken at 94 observatories located throughout Mexico, beginning in 1872 and going up through 1981. The data resided on paper...

  16. Surface Plasmon Based Spectrometer

    Science.gov (United States)

    Wig, Andrew; Passian, Ali; Boudreaux, Philip; Ferrell, Tom

    2008-03-01

    A spectrometer that uses surface plasmon excitation in thin metal films to separate light into its component wavelengths is described. The use of surface plasmons as a dispersive medium sets this spectrometer apart from prism, grating, and interference based variants and allows for the miniaturization of this device. Theoretical and experimental results are presented for two different operation models. In the first case surface plasmon tunneling in the near field is used to provide transmission spectra of different broad band-pass, glass filters across the visible wavelength range with high stray-light rejection at low resolution as well as absorption spectra of chlorophyll extracted from a spinach leaf. The second model looks at the far field components of surface plasmon scattering.

  17. Characterisation of Functional Surfaces

    DEFF Research Database (Denmark)

    Lonardo, P.M.; De Chiffre, Leonardo; Bruzzone, A.A.

    2004-01-01

    Characterisation of surfaces is of fundamental importance to control the manufacturing process and the functional performance of the part. Many applications concern contact and tribology problems, which include friction, wear and lubrication. This paper presents the techniques and instruments for...

  18. Iowa Bedrock Surface Elevation

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — This Digital Elevation Model (DEM) of the bedrock surface elevation in Iowa was compiled using all available data, principally information from GEOSAM, supplemented...

  19. Superhydrophobic Porous Silicon Surfaces

    Directory of Open Access Journals (Sweden)

    Paolo NENZI

    2011-12-01

    Full Text Available In this paper, we present an inexpensive technique to produce superhydrophobic surfaces from porous silicon. Superhydrophobic surfaces are a key technology for their ability to reduce friction losses in microchannels and their self cleaning properties. The morphology of a p-type silicon wafer is modified by a electrochemical wet etch to produce pores with controlled size and distribution and coated with a silane hydrophobic layer. Surface morphology is characterized by means of scanning electron microscope images. Large contact angles are observed on such surfaces and the results are compared with classical wetting models (Cassie and Wenzel suggesting a mixed Wenzel-Cassie behavior. The presented technique represents a cost-effective means for friction reduction in microfluidic applications, such as lab-on-a-chip.

  20. Triangulation of NURBS Surfaces

    Science.gov (United States)

    Samareh-Abolhassani, Jamshid

    1994-01-01

    A technique is presented for triangulation of NURBS surfaces. This technique is built upon an advancing front technique combined with grid point projection. This combined approach has been successfully implemented for structured and unstructured grids.

  1. Surface Tension of Spacetime

    Science.gov (United States)

    Perko, Howard

    2017-01-01

    Concepts from physical chemistry and more specifically surface tension are introduced to spacetime. Lagrangian equations of motion for membranes of curved spacetime manifold are derived. The equations of motion in spatial directions are dispersion equations and can be rearranged to Schrodinger's equation where Plank's constant is related to membrane elastic modulus. The equation of motion in the time-direction has two immediately recognizable solutions: electromagnetic waves and corpuscles. The corpuscular membrane solution can assume different genus depending on quantized amounts of surface energy. A metric tensor that relates empty flat spacetime to energetic curved spacetime is found that satisfies general relativity. Application of the surface tension to quantum electrodynamics and implications for quantum chromodynamics are discussed. Although much work remains, it is suggested that spacetime surface tension may provide a classical explanation that combines general relativity with field theories in quantum mechanics and atomic particle physics.

  2. CHEMILUMINESCENCE ON OXIDE SURFACE

    OpenAIRE

    L. I. IVANKIV; O. V. DZYUPYN; O.A. Balitskii

    2008-01-01

    This paper describes the oxygen adsorption properties on magnesium oxide surface. The results are compared with theoretical adsorption kinetics. Temperature and time dependences of adsorption mechanisms and chemiluminescence are discussed.

  3. Surface Protonics Promotes Catalysis

    Science.gov (United States)

    Manabe, R.; Okada, S.; Inagaki, R.; Oshima, K.; Ogo, S.; Sekine, Y.

    2016-12-01

    Catalytic steam reforming of methane for hydrogen production proceeds even at 473 K over 1 wt% Pd/CeO2 catalyst in an electric field, thanks to the surface protonics. Kinetic analyses demonstrated the synergetic effect between catalytic reaction and electric field, revealing strengthened water pressure dependence of the reaction rate when applying an electric field, with one-third the apparent activation energy at the lower reaction temperature range. Operando-IR measurements revealed that proton conduction via adsorbed water on the catalyst surface occurred during electric field application. Methane was activated by proton collision at the Pd-CeO2 interface, based on the inverse kinetic isotope effect. Proton conduction on the catalyst surface plays an important role in methane activation at low temperature. This report is the first describing promotion of the catalytic reaction by surface protonics.

  4. Triangulation of NURBS Surfaces

    Science.gov (United States)

    Samareh-Abolhassani, Jamshid

    1994-01-01

    A technique is presented for triangulation of NURBS surfaces. This technique is built upon an advancing front technique combined with grid point projection. This combined approach has been successfully implemented for structured and unstructured grids.

  5. Analyzing earth's surface data

    Science.gov (United States)

    Barr, D. J.; Elifrits, C. D.

    1979-01-01

    Manual discusses simple inexpensive image analysis technique used to interpret photographs and scanner of data of Earth's surface. Manual is designed for those who have no need for sophisticated computer-automated analysis procedures.

  6. Lunar Surface Navigation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — To support extended lunar operations, precision localization and route mapping is required for planetary EVA, manned rovers and lunar surface mobility units. A...

  7. Asteroid Surface Geophysics

    CERN Document Server

    Murdoch, Naomi; Schwartz, Stephen R; Miyamoto, Hideaki

    2015-01-01

    The regolith-covered surfaces of asteroids preserve records of geophysical processes that have occurred both at their surfaces and sometimes also in their interiors. As a result of the unique micro-gravity environment that these bodies posses, a complex and varied geophysics has given birth to fascinating features that we are just now beginning to understand. The processes that formed such features were first hypothesised through detailed spacecraft observations and have been further studied using theoretical, numerical and experimental methods that often combine several scientific disciplines. These multiple approaches are now merging towards a further understanding of the geophysical states of the surfaces of asteroids. In this chapter we provide a concise summary of what the scientific community has learned so far about the surfaces of these small planetary bodies and the processes that have shaped them. We also discuss the state of the art in terms of experimental techniques and numerical simulations that...

  8. Biological surface science

    Science.gov (United States)

    Kasemo, Bengt

    2002-03-01

    Biological surface science (BioSS), as defined here is the broad interdisciplinary area where properties and processes at interfaces between synthetic materials and biological environments are investigated and biofunctional surfaces are fabricated. Six examples are used to introduce and discuss the subject: Medical implants in the human body, biosensors and biochips for diagnostics, tissue engineering, bioelectronics, artificial photosynthesis, and biomimetic materials. They are areas of varying maturity, together constituting a strong driving force for the current rapid development of BioSS. The second driving force is the purely scientific challenges and opportunities to explore the mutual interaction between biological components and surfaces. Model systems range from the unique water structures at solid surfaces and water shells around proteins and biomembranes, via amino and nucleic acids, proteins, DNA, phospholipid membranes, to cells and living tissue at surfaces. At one end of the spectrum the scientific challenge is to map out the structures, bonding, dynamics and kinetics of biomolecules at surfaces in a similar way as has been done for simple molecules during the past three decades in surface science. At the other end of the complexity spectrum one addresses how biofunctional surfaces participate in and can be designed to constructively participate in the total communication system of cells and tissue. Biofunctional surfaces call for advanced design and preparation in order to match the sophisticated (bio) recognition ability of biological systems. Specifically this requires combined topographic, chemical and visco-elastic patterns on surfaces to match proteins at the nm scale and cells at the micrometer scale. Essentially all methods of surface science are useful. High-resolution (e.g. scanning probe) microscopies, spatially resolved and high sensitivity, non-invasive optical spectroscopies, self-organizing monolayers, and nano- and microfabrication

  9. Dyakonov surface waves

    DEFF Research Database (Denmark)

    Takayama, Osamu; Crasovan, Lucian Cornel; Johansen, Steffen Kjær;

    2008-01-01

    The interface of two semi-infinite media, where at least one of them is a birefringent crystal, supports a special type of surface wave that was predicted theoretically by D'yakonov in 1988. Since then, the properties of such waves, which exist in transparent media only under very special......, the existence of these surface waves in specific material examples is analyzed, discussing the challenge posed by their experimental observation....

  10. Large Curved Surface Measurement

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The measurement principle of large curved surface through theodolite industry survey system is introduced. Two methods are suggested with respect to the distribution range of curved surface error. The experiments show that the measurement precision can be up to 0.15mm with relative precision of 3×10-5. Finally, something needed paying attention to and the application aspects on theodolite industry survey system are given.

  11. Triangulating Trimmed NURBS Surfaces

    Science.gov (United States)

    2000-01-01

    Curve and Surface Design: Saint-Malo 1999 381 Pierre-Jean Laurent, Paul Sablonnibre, and Larry L. Schumaker ( eds .), pp. 381-388. Copyright 0 2000 by...the boundary of its neighboring surface. References 1. Baehmann, P. L., S. L. Wittchen , M. S. Shephard, K. R. Grice and M. A. Yerry, Robust...and D. Eppstein, Mesh generation and optimal triangulation, in Computing in Euclidean Geometry, 2nd ed ., D.-Z. Du and F. K. Hwang, ( eds .), World

  12. Computer aided surface representation

    Energy Technology Data Exchange (ETDEWEB)

    Barnhill, R.E.

    1989-02-09

    The central research problem of this project is the effective representation and display of surfaces, interpolating to given information, in three or more dimensions. In a typical problem, we wish to create a surface from some discrete information. If this information is itself on another surface, the problem is to determine a surface defined on a surface,'' which is discussed below. Often, properties of an already constructed surface are desired: such geometry processing'' is described below. The Summary of Proposed Research from our original proposal describes the aims of this research project. This Summary and the Table of Contents from the original proposal are enclosed as an Appendix to this Progress Report. The broad sweep from constructive mathematics through algorithms and computer graphics displays is utilized in the research. The wide range of activity, directed in both theory and applications, makes this project unique. Last month in the first Ardent Titan delivered in the State of Arizona came to our group, funded by the DOE and Arizona State University. Although the Titan is a commercial product, its newness requires our close collaboration with Ardent to maximize results. During the past year, four faculty members and several graduate research assistants have worked on this DOE project. The gaining of new professionals is an important aspect of this project. A listing of the students and their topics is given in the Appendix. The most significant publication during the past year is the book, Curves and Surfaces for Computer Aided Geometric Design, by Dr. Gerald Farin. This 300 page volume helps fill a considerable gap in the subject and includes many new results on Bernstein-Bezier curves and surfaces.

  13. Surface Mediated Photocatalysis.

    Science.gov (United States)

    1987-12-01

    Bipolar Photoelectrodes," M.A. Fox, Nouv. J. Chim. 1987, II, 129. 4. "Effect of Cosolvent Additives on Relative Rates of Photooxidation on...Semiconductor Surfaces," D.D. Sackett, M.A. Fox, J. Phys. Org. Chem, 19_8, in press. 5. "Selectivity in the Semiconductor-Mediated Photooxidation of Polyols ...surfaced properties of the heteropolytungstates were varied. The conceptual mechanistic picture involved in the heteropolyoxo induced photooxidations

  14. Multifunctional thin film surface

    Energy Technology Data Exchange (ETDEWEB)

    Brozik, Susan M.; Harper, Jason C.; Polsky, Ronen; Wheeler, David R.; Arango, Dulce C.; Dirk, Shawn M.

    2015-10-13

    A thin film with multiple binding functionality can be prepared on an electrode surface via consecutive electroreduction of two or more aryl-onium salts with different functional groups. This versatile and simple method for forming multifunctional surfaces provides an effective means for immobilization of diverse molecules at close proximities. The multifunctional thin film has applications in bioelectronics, molecular electronics, clinical diagnostics, and chemical and biological sensing.

  15. Biochemically responsive smart surface.

    Science.gov (United States)

    Rios, Fabian; Smirnov, Sergei

    2009-04-01

    A design of smart surfaces responsive to biochemical analytes is demonstrated in the example of mixed monolayers of biotin/fluorocarbon. The contact angle of aqueous solutions on such surfaces decreases upon streptavidin binding and can be used in detecting this protein. The specificity of the effect is confirmed by the lack of a contact angle change by streptavidin blocked with biotin and by bovine serum albumin.

  16. Counting curves on surfaces

    OpenAIRE

    2015-01-01

    In this paper we consider an elementary, and largely unexplored, combinatorial problem in low-dimensional topology. Consider a real 2-dimensional compact surface $S$, and fix a number of points $F$ on its boundary. We ask: how many configurations of disjoint arcs are there on $S$ whose boundary is $F$? We find that this enumerative problem, counting curves on surfaces, has a rich structure. For instance, we show that the curve counts obey an effective recursion, in the general framework of to...

  17. Ocean surface wind stress

    Science.gov (United States)

    Harrison, D. E.

    1984-01-01

    The need for improved surface wind and wind stress data is discussed. The collection of wind data using ship reports, research buoys, and cloud motion vectors is examined. The need for data on surface-wind stress fields is emphasized. Accurate stress data are required for studying: (1) the normal seasonal cycle and the intraannual events; (2) wind stress curls and the forcing of ocean circulation; (3) El Nino events; and (4) the low response of the midlatitude ocean circulation.

  18. Antibacterial Au nanostructured surfaces

    Science.gov (United States)

    Wu, Songmei; Zuber, Flavia; Brugger, Juergen; Maniura-Weber, Katharina; Ren, Qun

    2016-01-01

    We present here a technological platform for engineering Au nanotopographies by templated electrodeposition on antibacterial surfaces. Three different types of nanostructures were fabricated: nanopillars, nanorings and nanonuggets. The nanopillars are the basic structures and are 50 nm in diameter and 100 nm in height. Particular arrangement of the nanopillars in various geometries formed nanorings and nanonuggets. Flat surfaces, rough substrate surfaces, and various nanostructured surfaces were compared for their abilities to attach and kill bacterial cells. Methicillin-resistant Staphylococcus aureus, a Gram-positive bacterial strain responsible for many infections in health care system, was used as the model bacterial strain. It was found that all the Au nanostructures, regardless their shapes, exhibited similar excellent antibacterial properties. A comparison of live cells attached to nanotopographic surfaces showed that the number of live S. aureus cells was health care system, was used as the model bacterial strain. It was found that all the Au nanostructures, regardless their shapes, exhibited similar excellent antibacterial properties. A comparison of live cells attached to nanotopographic surfaces showed that the number of live S. aureus cells was information (ESI) available. See DOI: 10.1039/c5nr06157a

  19. Mars Surface Environmental Issues

    Science.gov (United States)

    Charles, John

    2002-01-01

    Planetary exploration by astronauts will require extended periods of habitation on a planet's surface, under the influence of environmental factors that are different from those of Earth and the spacecraft that delivered the crew to the planet. Human exploration of Mars, a possible near-term planetary objective, can be considered a challenging scenario. Mission scenarios currently under consideration call for surface habitation periods of from 1 to 18 months on even the earliest expeditions. Methods: Environmental issues associated with Mars exploration have been investigated by NASA and the National Space Biomedical Research Institute (NSBRI) as part of the Bioastronautics Critical Path Roadmap Project (see http ://criticalpath.jsc.nasa.gov). Results: Arrival on Mars will immediately expose the crew to gravity only 38% of that at Earth's surface in possibly the first prolonged exposure to gravity other than the 1G of Earth's surface and the zero G of weightless space flight, with yet unknown effects on crew physiology. The radiation at Mars' surface is not well documented, although the planet's bulk and even its thin atmosphere may moderate the influx of galactic cosmic radiation and energetic protons from solar flares. Secondary radiation from activated components of the soil must also be considered. Ultrafine and larger respirable and nonrespirable particles in Martian dust introduced into the habitat after surface excursions may induce pulmonary inflammation exacerbated by the additive reactive and oxidizing nature of the dust. Stringent decontamination cannot eliminate mechanical and corrosive effects of the dust on pressure suits and exposed machinery. The biohazard potential of putative indigenous Martian microorganisms may be assessed by comparison with analog environments on Earth. Even in their absence, human microorganisms, if not properly controlled, can be a threat to the crew's health. Conclusions: Mars' surface offers a substantial challenge to the

  20. Surface chemistry theory and applications

    CERN Document Server

    Bikerman, J J

    2013-01-01

    Surface Chemistry Theory and Applications focuses on liquid-gas, liquid-liquid, solid-gas, solid-liquid, and solid-solid surfaces. The book first offers information on liquid-gas surfaces, including surface tension, measurement of surface tension, rate of capillarity rise, capillary attraction, bubble pressure and pore size, and surface tension and temperature. The text then ponders on liquid-liquid and solid-gas surfaces. Discussions focus on surface energy of solids, surface roughness and cleanness, adsorption of gases and vapors, adsorption hysteresis, interfacial tension, and interfacial t

  1. Theory of Digitized Conjugate Surface and Solution to Conjugate Surface

    Institute of Scientific and Technical Information of China (English)

    Xiao Lai-yuan; Liao Dao-xun; Yi Chuan-yun

    2004-01-01

    In order to meet the needs of designing and processing digitized surfaces, the method to spreading digitized surface has been proposed. The key technique is to solve the problem of digitized conjugate surface. In the paper, the digitized conjugate surface was theoretically investigated, and the solution of conjugate surface based on digitized surface was also studied. The digitized conjugate surface theory was then proposed, and applied to build the model of solving conjugate surface based on digitized surface. A corresponding algorithm was developed. This paper applies the software Conjugater-1.0 that is developed by ourselves to compute the digitized conjugate surfaces of the drum-tooth surface. This study provides theoretical and technical bases for analyzing engagement of digitized surface, simulation and numerical processing technique.

  2. Molecular chirality at surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Ernst, Karl-Heinz [Empa, Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600 Duebendorf (Switzerland); Organic Chemistry Institute, University Zurich, 8057 Zuerich (Switzerland)

    2012-11-15

    With the adsorption of larger molecules being increasingly tackled by surface scientists, the aspect of chirality often plays a role. This paper gives a topical review of molecular chirality at surfaces and gives a phenomenological overview of different aspects of adsorption and self-assembly of chiral and prochiral molecules and the principles of mirror-symmetry breaking at a surface. After a brief introduction into the history of molecular chirality and the important role it played for understanding the spatial structure of molecules, definitions of chirality are presented. Topics treated here are principle ways to create single chiral adsorbates, chiral ensembles, and monolayers by achiral molecules, adsorption of intrinsically chiral molecules at achiral and chiral surfaces, long-range symmetry breaking in two-dimensional (2D) crystals due to additional chiral bias, chiral restructuring of solid surfaces under the influence of chiral molecules, switching the handedness of adsorbates, and chirality at the liquid/air interface. An outlook onto further potential research directions and recommendations for further reading, including nonsurface-related sources of chiral topics completes this paper. (Copyright copyright 2012 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  3. Stability of surface nanobubbles

    Science.gov (United States)

    Maheshwari, Shantanu; van der Hoef, Martin; Zhang, Xuehua; Lohse, Detlef

    2015-11-01

    We have studied the stability and dissolution of surface nanobubbles on the chemical heterogenous surface by performing Molecular Dynamics (MD) simulations of binary mixture consists of Lennard-Jones (LJ) particles. Recently our group has derived the exact expression for equilibrium contact angle of surface nanobubbles as a function of oversaturation of the gas concentration in bulk liquid and the lateral length of bubble. It has been showed that the contact line pinning and the oversaturation of gas concentration in bulk liquid is crucial in the stability of surface nanobubbles. Our simulations showed that how pinning of the three-phase contact line on the chemical heterogenous surface lead to the stability of the nanobubble. We have calculated the equilibrium contact angle by varying the gas concentration in bulk liquid and the lateral length of the bubble. Our results showed that the equilibrium contact angle follows the expression derived analytically by our group. We have also studied the bubble dissolution dynamics and showed the ''stick-jump'' mechanism which was also observed experimentally in case of dissolution of nanodrops.

  4. Iron oxide surfaces

    Science.gov (United States)

    Parkinson, Gareth S.

    2016-03-01

    The current status of knowledge regarding the surfaces of the iron oxides, magnetite (Fe3O4), maghemite (γ-Fe2O3), haematite (α-Fe2O3), and wüstite (Fe1-xO) is reviewed. The paper starts with a summary of applications where iron oxide surfaces play a major role, including corrosion, catalysis, spintronics, magnetic nanoparticles (MNPs), biomedicine, photoelectrochemical water splitting and groundwater remediation. The bulk structure and properties are then briefly presented; each compound is based on a close-packed anion lattice, with a different distribution and oxidation state of the Fe cations in interstitial sites. The bulk defect chemistry is dominated by cation vacancies and interstitials (not oxygen vacancies) and this provides the context to understand iron oxide surfaces, which represent the front line in reduction and oxidation processes. Fe diffuses in and out from the bulk in response to the O2 chemical potential, forming sometimes complex intermediate phases at the surface. For example, α-Fe2O3 adopts Fe3O4-like surfaces in reducing conditions, and Fe3O4 adopts Fe1-xO-like structures in further reducing conditions still. It is argued that known bulk defect structures are an excellent starting point in building models for iron oxide surfaces. The atomic-scale structure of the low-index surfaces of iron oxides is the major focus of this review. Fe3O4 is the most studied iron oxide in surface science, primarily because its stability range corresponds nicely to the ultra-high vacuum environment. It is also an electrical conductor, which makes it straightforward to study with the most commonly used surface science methods such as photoemission spectroscopies (XPS, UPS) and scanning tunneling microscopy (STM). The impact of the surfaces on the measurement of bulk properties such as magnetism, the Verwey transition and the (predicted) half-metallicity is discussed. The best understood iron oxide surface at present is probably Fe3O4(100); the structure is

  5. LA CONTRE-PHÉNOMÉNOLOGIE DE L’AVEUGLE CHEZ JACQUES DERRIDA (The counter-phenomenology of the Blind by Jacques Derrida

    Directory of Open Access Journals (Sweden)

    Urszula Idziak-Smoczyńska

    2015-06-01

    Full Text Available The article deals with Derrida’s project of counter-phenomenology of the blind based on his own exhibition of drawings from the Louvre Museum (26. 10. 1990 – 21. 1. 1991. Writing, drawing and moving with a blind man stick are linked together being each a movement in the dark, driven only by faith. Derrida has focused on drawings of blinds and the art of auto-portraying as an exercise on one’s own blindness. One of such exercises, both technical and spiritual, consists in a deconstructive role of tears capable of covering our eyes with a veil, thus depriving us from mastery over the world and from our sense of justice. At the edges of art, in the visible in praise of the invisible, Derrida discovers an imperative of faith expressed by the answer to the skeptical “do you believe?” [translation modified U.I.S.] which opens the Memoirs of the Blind – “one has to believe”.

  6. Jacques Krynen, Jacques Raibaut. La légitimité des juges. Actes du colloque des 29-30 octobre 2003

    Directory of Open Access Journals (Sweden)

    Guillaume Métairie

    2009-05-01

    Full Text Available  « Au nom du peuple français » : grandiose et lapidaire, la formule suffit-elle à légitimer l’existence et le travail des juges qui tranchent en son lieu et place ? C’est à propos de cette question, sensible et d’actualité, que le volume dont nous avons à rendre compte présente une série diversifiée de regards croisés qui font son intérêt et sa richesse. Diversité, d’abord, en ce qui concerne la nature des participants, juristes praticiens (magistrats pour la plupart ou théoriciens (universi...

  7. Responsive acoustic surfaces

    DEFF Research Database (Denmark)

    Peters, Brady; Tamke, Martin; Nielsen, Stig Anton

    2011-01-01

    Acoustic performance is defined by the parameter of reverberation time; however, this does not capture the acoustic experience in some types of open plan spaces. As many working and learning activities now take place in open plan spaces, it is important to be able to understand and design...... for the acoustic conditions of these spaces. This paper describes an experimental research project that studied the design processes necessary to design for sound. A responsive acoustic surface was designed, fabricated and tested. This acoustic surface was designed to create specific sonic effects. The design...... was simulated using custom integrated acoustic software and also using Odeon acoustic analysis software. The research demonstrates a method for designing space- and sound-defining surfaces, defines the concept of acoustic subspace, and suggests some new parameters for defining acoustic subspaces....

  8. Wetting and Minimal Surfaces

    CERN Document Server

    Bachas, C; Wiese, K J; Bachas, Constantin; Doussal, Pierre Le; Wiese, Kay Joerg

    2006-01-01

    We study minimal surfaces which arise in wetting and capillarity phenomena. Using conformal coordinates, we reduce the problem to a set of coupled boundary equations for the contact line of the fluid surface, and then derive simple diagrammatic rules to calculate the non-linear corrections to the Joanny-de Gennes energy. We argue that perturbation theory is quasi-local, i.e. that all geometric length scales of the fluid container decouple from the short-wavelength deformations of the contact line. This is illustrated by a calculation of the linearized interaction between contact lines on two opposite parallel walls. We present a simple algorithm to compute the minimal surface and its energy based on these ideas. We also point out the intriguing singularities that arise in the Legendre transformation from the pure Dirichlet to the mixed Dirichlet-Neumann problem.

  9. Surface-water surveillance

    Energy Technology Data Exchange (ETDEWEB)

    Saldi, K.A.; Dirkes, R.L.; Blanton, M.L.

    1995-06-01

    This section of the 1994 Hanford Site Environmental Report summarizes the Surface water on and near the Hanford Site is monitored to determine the potential effects of Hanford operations. Surface water at Hanford includes the Columbia River, riverbank springs, ponds located on the Hanford Site, and offsite water systems directly east and across the Columbia River from the Hanford Site, and offsite water systems directly east and across the Columbia River from the Hanford Site. Columbia River sediments are also included in this discussion. Tables 5.3.1 and 5.3.2 summarize the sampling locations, sample types, sampling frequencies, and sample analyses included in surface-water surveillance activities during 1994. Sample locations are also identified in Figure 5.3.1. This section describes the surveillance effort and summarizes the results for these aquatic environments. Detailed analytical results are reported by Bisping (1995).

  10. Surface modification of bioceramics

    Science.gov (United States)

    Monkawa, Akira

    Hydroxyapatite [Ca10(PO4)6(OH)2, HAp] is a major inorganic component of bone and teeth tissues and has the excellent biocompatibility and high osteoconductivity. The interactions between HAp and protein or cell have been studied. The HAp related bioceramics such as bone substitute, coating substance of metal implants, inorganic-polymer composites, and cell culture. We described two methods; (1) surface modification of HAp using organosilane; (2) fabrication of HAp ultra-thin layer on gold surface for protein adsorption analyzed with QCM-D technique. The interfacial interaction between collagen and HAp in a nano-region was controlled by depositing the organosilane of n-octadecyltrimethoxysilane (ODS: -CH3) or aminopropyltriethoxysilane (APTS: -NH2) with a chemical vapor deposition method. The morphologies of collagen adsorbed on the surfaces of HAp and HAp deposited with APTS were similar, however that of the surface with ODS was apparently different, due to the hydrophobic interaction between the organic head group of -CH3 and residual groups of collagen. We present a method for coating gold quartz crystal microbalance with dissipation (QCM-D) sensor with ultra-thin layer of hydroxyapatite nanocrystals evenly covering and tightly bound to the surface. The hydroxyapatite sensor operated in liquid with high stability and sensitivity. The in-situ adsorption mechanism and conformational change of fibrinogen on gold, titanium and hydroxyapatite surfaces were investigated by QCM-D technique and Fourier-transform infrared spectroscopy. The study indicates that the hydroxyapatite sensor is applicable for qualitative and conformational analysis of protein adsorption.

  11. Surface Aesthetics and Analysis.

    Science.gov (United States)

    Çakır, Barış; Öreroğlu, Ali Rıza; Daniel, Rollin K

    2016-01-01

    Surface aesthetics of an attractive nose result from certain lines, shadows, and highlights with specific proportions and breakpoints. Analysis emphasizes geometric polygons as aesthetic subunits. Evaluation of the complete nasal surface aesthetics is achieved using geometric polygons to define the existing deformity and aesthetic goals. The relationship between the dome triangles, interdomal triangle, facet polygons, and infralobular polygon are integrated to form the "diamond shape" light reflection on the nasal tip. The principles of geometric polygons allow the surgeon to analyze the deformities of the nose, define an operative plan to achieve specific goals, and select the appropriate operative technique.

  12. Photochemistry on solid surfaces

    CERN Document Server

    Matsuura, T

    1989-01-01

    The latest developments in photochemistry on solid surfaces, i.e. photochemistry in heterogeneous systems, including liquid crystallines, are brought together for the first time in a single volume. Distinguished photochemists from various fields have contributed to the book which covers a number of important applications: molecular photo-devices for super-memory, photochemical vapor deposition to produce thin-layered electronic semiconducting materials, sensitive optical media, the control of photochemical reactions pathways, etc. Photochemistry on solid surfaces is now a major field and this

  13. Quantitative Hydrocarbon Surface Analysis

    Science.gov (United States)

    Douglas, Vonnie M.

    2000-01-01

    The elimination of ozone depleting substances, such as carbon tetrachloride, has resulted in the use of new analytical techniques for cleanliness verification and contamination sampling. The last remaining application at Rocketdyne which required a replacement technique was the quantitative analysis of hydrocarbons by infrared spectrometry. This application, which previously utilized carbon tetrachloride, was successfully modified using the SOC-400, a compact portable FTIR manufactured by Surface Optics Corporation. This instrument can quantitatively measure and identify hydrocarbons from solvent flush of hardware as well as directly analyze the surface of metallic components without the use of ozone depleting chemicals. Several sampling accessories are utilized to perform analysis for various applications.

  14. Surface science techniques

    CERN Document Server

    Bracco, Gianangelo

    2013-01-01

    The book describes the experimental techniques employed to study surfaces and interfaces. The emphasis is on the experimental method. Therefore all chapters start with an introduction of the scientific problem, the theory necessary to understand how the technique works and how to understand the results. Descriptions of real experimental setups, experimental results at different systems are given to show both the strength and the limits of the technique. In a final part the new developments and possible extensions of the techniques are presented. The included techniques provide microscopic as well as macroscopic information. They cover most of the techniques used in surface science.

  15. Surface and nanomolecular catalysis

    CERN Document Server

    Richards, Ryan

    2006-01-01

    Using new instrumentation and experimental techniques that allow scientists to observe chemical reactions and molecular properties at the nanoscale, the authors of Surface and Nanomolecular Catalysis reveal new insights into the surface chemistry of catalysts and the reaction mechanisms that actually occur at a molecular level during catalysis. While each chapter contains the necessary background and explanations to stand alone, the diverse collection of chapters shows how developments from various fields each contributed to our current understanding of nanomolecular catalysis as a whole. The

  16. Solid lubricants and surfaces

    CERN Document Server

    Braithwaite, E R

    1964-01-01

    Solid Lubricants and Surfaces deals with the theory and use of solid lubricants, particularly in colloidal form. Portions of this book are devoted to graphite and molybdenum disulfides, which are widely used solid lubricants in colloidal form. An extensive literature on the laboratory examination of hundreds of solids as potential lubricants is also provided in this text. Other topics discussed include the metals and solid lubricants; techniques for examining surfaces; other solid lubricants; metal shaping; and industrial uses of solid-lubricant dispersions. This publication is beneficial to e

  17. Quantizing Earth surface deformations

    Directory of Open Access Journals (Sweden)

    C. O. Bowin

    2015-03-01

    Full Text Available The global analysis of Bowin (2010 used the global 14 absolute Euler pole set (62 Myr history from Gripp and Gordon (1990 and demonstrated that plate tectonics conserves angular momentum. We herein extend that analysis using the more detailed Bird (2003 52 present-day Euler pole set (relative to a fixed Pacific plate for the Earth's surface, after conversion to absolute Euler poles. Additionally, new analytical results now provide new details on upper mantle mass anomalies in the outer 200 km of the Earth, as well as an initial quantizing of surface deformations.

  18. Surface-Mediated Photocatalysis

    Science.gov (United States)

    1992-02-04

    Photocatalysis 6. AUTHOR(S) DIMarye Anne Fox E -LECTE ’ / 7. PERFORMING ORGANIZATION NAME(S) AND AD ES). 8. PERFORMING ORGANIZATION REPORT NUMBER University of...Form 298 (Rev 2-89) Prescr d bv ANJ std Z39.1s 291-102 j Final Report on Surface-Mediated Photocatalysis "a,. . ARO Proposal No. 28298-CH u - Work from...Produced by Anodic Oxidation and by Photoelectrochemical Activation of TiO2 ," Marye Anne Fox and Karl L. Worthen, Chem. Mater. 1991, 3, 253. "Surface

  19. Biofunctional surface engineering

    CERN Document Server

    Scholz, Martin

    2014-01-01

    PrefaceRegulatory issuesSterilization of combination devicesPolyelectrolyte monolayers (I)Polyelectrolyte monolayers (II)Surface modificationsThree dimensional characterization of immobilized biomolecules Aptamers for biofunctionalization of stentsCoating of implants with antibioticsMicroneedles and nanopatchesfor vaccinationMicrochips for antibody binding analysesBiofunctionalized wound dressingsExtracorporeal device for trapping circulating tumor cellsOutlook

  20. Predictive Surface Complexation Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Sverjensky, Dimitri A. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Earth and Planetary Sciences

    2016-11-29

    Surface complexation plays an important role in the equilibria and kinetics of processes controlling the compositions of soilwaters and groundwaters, the fate of contaminants in groundwaters, and the subsurface storage of CO2 and nuclear waste. Over the last several decades, many dozens of individual experimental studies have addressed aspects of surface complexation that have contributed to an increased understanding of its role in natural systems. However, there has been no previous attempt to develop a model of surface complexation that can be used to link all the experimental studies in order to place them on a predictive basis. Overall, my research has successfully integrated the results of the work of many experimentalists published over several decades. For the first time in studies of the geochemistry of the mineral-water interface, a practical predictive capability for modeling has become available. The predictive correlations developed in my research now enable extrapolations of experimental studies to provide estimates of surface chemistry for systems not yet studied experimentally and for natural and anthropogenically perturbed systems.

  1. Characterisation of Functional Surfaces

    DEFF Research Database (Denmark)

    Lonardo, P.M.; De Chiffre, Leonardo; Bruzzone, A.A.

    2004-01-01

    for characterisation of surfaces, discussing their operating principles and metrological properties. A review of the conventional 2D and new 3D roughness parameters is given, considering both the current standards and new proposals for texture quantification, with a particular attention to the methods orientated...

  2. Copernicus: Lunar surface mapper

    Science.gov (United States)

    Redd, Frank J.; Anderson, Shaun D.

    1992-01-01

    The Utah State University (USU) 1991-92 Space Systems Design Team has designed a Lunar Surface Mapper (LSM) to parallel the development of the NASA Office of Exploration lunar initiatives. USU students named the LSM 'Copernicus' after the 16th century Polish astronomer, for whom the large lunar crater on the face of the moon was also named. The top level requirements for the Copernicus LSM are to produce a digital map of the lunar surface with an overall resolution of 12 meters (39.4 ft). It will also identify specified local surface features/areas to be mapped at higher resolutions by follow-on missions. The mapping operation will be conducted from a 300 km (186 mi) lunar-polar orbit. Although the entire surface should be mapped within six months, the spacecraft design lifetime will exceed one year with sufficient propellant planned for orbit maintenance in the anomalous lunar gravity field. The Copernicus LSM is a small satellite capable of reaching lunar orbit following launch on a Conestoga launch vehicle which is capable of placing 410 kg (900 lb) into translunar orbit. Upon orbital insertion, the spacecraft will weigh approximately 233 kg (513 lb). This rather severe mass constraint has insured attention to component/subsystem size and mass, and prevented 'requirements creep.' Transmission of data will be via line-of-sight to an earth-based receiving system.

  3. Multiband frequency selective surface

    Science.gov (United States)

    Wu, Te-Kao

    1998-10-01

    This paper addresses the similarity of microwave/millimeter wave frequency selective surfaces (FSS) to optical filters. Specifically, the design approaches of the 4-band FSSs developed for NASA's CASSINI high gain antenna are described in detail. Representative RF test results are given to demonstrate the validity of these designs. These design approaches are very general and can be applied to multiband optical filters.

  4. Wetting of real surfaces

    CERN Document Server

    Bormashenko, Edward Yu

    2013-01-01

    The problem of wetting and drop dynamics on various surfaces is very interesting from both the scientificas well as thepractical viewpoint, and subject of intense research.The results are scattered across papers in journals, sothis workwill meet the need for a unifying, comprehensive work.

  5. Paneling architectural freeform surfaces

    KAUST Repository

    Eigensatz, Michael

    2010-07-26

    The emergence of large-scale freeform shapes in architecture poses big challenges to the fabrication of such structures. A key problem is the approximation of the design surface by a union of patches, socalled panels, that can be manufactured with a selected technology at reasonable cost, while meeting the design intent and achieving the desired aesthetic quality of panel layout and surface smoothness. The production of curved panels is mostly based on molds. Since the cost of mold fabrication often dominates the panel cost, there is strong incentive to use the same mold for multiple panels. We cast the major practical requirements for architectural surface paneling, including mold reuse, into a global optimization framework that interleaves discrete and continuous optimization steps to minimize production cost while meeting user-specified quality constraints. The search space for optimization is mainly generated through controlled deviation from the design surface and tolerances on positional and normal continuity between neighboring panels. A novel 6-dimensional metric space allows us to quickly compute approximate inter-panel distances, which dramatically improves the performance of the optimization and enables the handling of complex arrangements with thousands of panels. The practical relevance of our system is demonstrated by paneling solutions for real, cutting-edge architectural freeform design projects. © 2010 ACM.

  6. A Thermochromic Superhydrophobic Surface

    Science.gov (United States)

    Cataldi, Pietro; Bayer, Ilker S.; Cingolani, Roberto; Marras, Sergio; Chellali, Ryad; Athanassiou, Athanassia

    2016-01-01

    Highly enhanced solid-state thermochromism is observed in regioregular poly(3-hexylthiophene), P3HT, when deposited on a superhydrophobic polymer-SiO2 nanocomposite coating. The conformal P3HT coating on the nanocomposite surface does not alter or reduce superhydrophicity while maintaining its reversible enhanced thermochromism. The polymeric matrix of the superhydrophobic surface is comprised of a blend of poly(vinylidene fluoride-co-hexafluoropropylene) copolymer and an acrylic adhesive. Based on detailed X-ray diffraction measurements, this long-lasting, repeatable and hysteresis-free thermochromic effect is attributed to the enhancement of the Bragg peak associated with the d-spacing of interchain directional packing (100) which remains unaltered during several heating-cooling cycles. We propose that the superhydrophobic surface confines π–π interchain stacking in P3HT with uniform d-spacing into its nanostructured texture resulting in better packing and reduction in face-on orientation. The rapid response of the system to sudden temperature changes is also demonstrated by water droplet impact and bounce back on heated surfaces. This effect can be exploited for embedded thin film temperature sensors for metal coatings. PMID:27301422

  7. Designing Superoleophobic Surfaces (Postprint)

    Science.gov (United States)

    2007-12-07

    recent experiments show that even the wax on the lotus leaf surface is weakly hydrophilic with q ≈ 74° (29). The superhydrophobic state of these...fibers (14), and spherical arrays of poly(tetrafluoroethylene) ( PTFE ) particles (17), as well as superhydrophobicity obtained on a hydrophilic substrate

  8. Surface Nanobubbles Nucleate Microdroplets

    NARCIS (Netherlands)

    Zhang, Xuehua; Lhuissier, Henri; Sun, Chao; Lohse, Detlef

    2014-01-01

    When a hydrophobic solid is in contact with water, surface nanobubbles often form at the interface. They have a lifetime many orders of magnitude longer than expected. Here, we show that they even withstand a temperature increase to temperatures close to the boiling point of bulk water; i.e., they d

  9. Paneling architectural freeform surfaces

    KAUST Repository

    Eigensatz, Michael

    2010-07-25

    The emergence of large-scale freeform shapes in architecture poses big challenges to the fabrication of such structures. A key problem is the approximation of the design surface by a union of patches, so-called panels, that can be manufactured with a selected technology at reasonable cost, while meeting the design intent and achieving the desired aesthetic quality of panel layout and surface smoothness. The production of curved panels is mostly based on molds. Since the cost of mold fabrication often dominates the panel cost, there is strong incentive to use the same mold for multiple panels. We cast the major practical requirements for architectural surface paneling, including mold reuse, into a global optimization framework that interleaves discrete and continuous optimization steps to minimize production cost while meeting user-specified quality constraints. The search space for optimization is mainly generated through controlled deviation from the design surface and tolerances on positional and normal continuity between neighboring panels. A novel 6-dimensional metric space allows us to quickly compute approximate inter-panel distances, which dramatically improves the performance of the optimization and enables the handling of complex arrangements with thousands of panels. The practical relevance of our system is demonstrated by paneling solutions for real, cutting-edge architectural freeform design projects.

  10. Surface explosion cavities

    CERN Document Server

    Benusiglio, Adrien; Clanet, Christophe

    2012-01-01

    We present a fluid dynamics video on cavities created by explosions of firecrackers at the water free surface. We use three types of firecrackers containing 1, 1.3 and 5 g of flash powder. The firecrackers are held with their center at the surface of water in a cubic meter pool. The movies are recorded from the side with a high-speed video camera. Without confinement the explosion produces an hemispherical cavity. Right after the explosion this cavity grows isotropically, the bottom then stops while the sides continue to expand. In the next phase the bottom of the cavity accelerates backwards to the surface. During this phase the convergence of the flow creates a central jet that rises above the free surface. In the last part of the video the explosion is confined in a vertical open tube made of glass and of centimetric diameter. The explosion creates a cylindrical cavity that develops towards the free end of the tube. Depending on the charge, the cavity can either stop inside the tube or at its exit, but nev...

  11. Dyakonov surface waves

    DEFF Research Database (Denmark)

    Takayama, Osamu; Crasovan, Lucian Cornel; Johansen, Steffen Kjær

    2008-01-01

    The interface of two semi-infinite media, where at least one of them is a birefringent crystal, supports a special type of surface wave that was predicted theoretically by D'yakonov in 1988. Since then, the properties of such waves, which exist in transparent media only under very special conditi...

  12. Effective Free Surfaces

    Science.gov (United States)

    Yapalparvi, Ramesh; Protas, Bartosz

    2010-11-01

    In this investigation we introduce the concept of an "effective free surface" arising as a solution of time--averaged equations in the presence of free boundaries. This work is motivated by applications of optimization theory to problems involving free surfaces, such as droplets impinging on the weld pool surface in welding processes. In such problems the time--dependent governing equations lead to technical difficulties, many of which are alleviated when methods of optimization are applied to a steady problem with effective free surfaces. The corresponding equations are obtained by performing the Reynolds decomposition and averaging of the time--dependent free--boundary equations based on the volume--of--fluid (VoF) formalism. We identify the terms representing the average effect of fluctuating free boundaries which, in analogy with the Reynolds stresses in classical turbulence models, need to be modelled and propose some simple algebraic closures for these terms. We argue that effective free boundaries can be computed using methods of shape optimization and present some results.

  13. Scraped surface heat exchangers.

    Science.gov (United States)

    Rao, Chetan S; Hartel, Richard W

    2006-01-01

    Scraped surface heat exchangers (SSHEs) are commonly used in the food, chemical, and pharmaceutical industries for heat transfer, crystallization, and other continuous processes. They are ideally suited for products that are viscous, sticky, that contain particulate matter, or that need some degree of crystallization. Since these characteristics describe a vast majority of processed foods, SSHEs are especially suited for pumpable food products. During operation, the product is brought in contact with a heat transfer surface that is rapidly and continuously scraped, thereby exposing the surface to the passage of untreated product. In addition to maintaining high and uniform heat exchange, the scraper blades also provide simultaneous mixing and agitation. Heat exchange for sticky and viscous foods such as heavy salad dressings, margarine, chocolate, peanut butter, fondant, ice cream, and shortenings is possible only by using SSHEs. High heat transfer coefficients are achieved because the boundary layer is continuously replaced by fresh material. Moreover, the product is in contact with the heating surface for only a few seconds and high temperature gradients can be used without the danger of causing undesirable reactions. SSHEs are versatile in the use of heat transfer medium and the various unit operations that can be carried out simultaneously. This article critically reviews the current understanding of the operations and applications of SSHEs.

  14. A Thermochromic Superhydrophobic Surface

    Science.gov (United States)

    Cataldi, Pietro; Bayer, Ilker S.; Cingolani, Roberto; Marras, Sergio; Chellali, Ryad; Athanassiou, Athanassia

    2016-06-01

    Highly enhanced solid-state thermochromism is observed in regioregular poly(3-hexylthiophene), P3HT, when deposited on a superhydrophobic polymer-SiO2 nanocomposite coating. The conformal P3HT coating on the nanocomposite surface does not alter or reduce superhydrophicity while maintaining its reversible enhanced thermochromism. The polymeric matrix of the superhydrophobic surface is comprised of a blend of poly(vinylidene fluoride-co-hexafluoropropylene) copolymer and an acrylic adhesive. Based on detailed X-ray diffraction measurements, this long-lasting, repeatable and hysteresis-free thermochromic effect is attributed to the enhancement of the Bragg peak associated with the d-spacing of interchain directional packing (100) which remains unaltered during several heating-cooling cycles. We propose that the superhydrophobic surface confines π–π interchain stacking in P3HT with uniform d-spacing into its nanostructured texture resulting in better packing and reduction in face-on orientation. The rapid response of the system to sudden temperature changes is also demonstrated by water droplet impact and bounce back on heated surfaces. This effect can be exploited for embedded thin film temperature sensors for metal coatings.

  15. Designing durable icephobic surfaces.

    Science.gov (United States)

    Golovin, Kevin; Kobaku, Sai P R; Lee, Duck Hyun; DiLoreto, Edward T; Mabry, Joseph M; Tuteja, Anish

    2016-03-01

    Ice accretion has a negative impact on critical infrastructure, as well as a range of commercial and residential activities. Icephobic surfaces are defined by an ice adhesion strength τice deicing cycles, thermal cycling, accelerated corrosion, and exposure to Michigan wintery conditions over several months.

  16. Surface Traffic Management Research

    Science.gov (United States)

    Jung, Yoo Chul

    2012-01-01

    This presentation discusses an overview of the surface traffic management research conducted by NASA Ames. The concept and human-in-the-loop simulation of the Spot and Runway Departure Advisor (SARDA), an integrated decision support tool for the tower controllers and airline ramp operators, is also discussed.

  17. Titan's surface and atmosphere

    Science.gov (United States)

    Hayes, Alexander G.; Soderblom, Jason M.; Ádámkovics, Máté

    2016-05-01

    Since its arrival in late 2004, the NASA/ESA Cassini-Huygens mission to Saturn has revealed Titan to be a world that is both strange and familiar. Titan is the only extraterrestrial body known to support standing bodies of stable liquid on its surface and, along with Earth and early Mars, is one of three places in the Solar System known to have had an active hydrologic cycle. With atmospheric pressures of 1.5 bar and temperatures of 90-95 K at the surface, methane and ethane condense out of Titan's nitrogen-dominated atmosphere and flow as liquids on the surface. Despite vast differences in environmental conditions and materials from Earth, Titan's methane-based hydrologic cycle drives climatic and geologic processes which generate landforms that are strikingly similar to their terrestrial counterparts, including vast equatorial dunes, well-organized channel networks that route material through erosional and depositional landscapes, and lakes and seas of liquid hydrocarbons. These similarities make Titan a natural laboratory for studying the processes that shape terrestrial landscapes and drive climates, probing extreme conditions impossible to recreate in earthbound laboratories. Titan's exotic environment ensures that even rudimentary measurements of atmospheric/surface interactions, such as wind-wave generation or aeolian dune development, provide valuable data to anchor physical models.

  18. Surface Water in Hawaii

    Science.gov (United States)

    Oki, Delwyn S.

    2003-01-01

    Surface water in Hawaii is a valued resource as well as a potential threat to human lives and property. The surface-water resources of Hawaii are of significant economic, ecologic, cultural, and aesthetic importance. Streams supply more than 50 percent of the irrigation water in Hawaii, and although streams supply only a few percent of the drinking water statewide, surface water is the main source of drinking water in some places. Streams also are a source of hydroelectric power, provide important riparian and instream habitats for many unique native species, support traditional and customary Hawaiian gathering rights and the practice of taro cultivation, and possess valued aesthetic qualities. Streams affect the physical, chemical, and aesthetic quality of receiving waters, such as estuaries, bays, and nearshore waters, which are critical to the tourism-based economy of the islands. Streams in Hawaii pose a danger because of their flashy nature; a stream's stage, or water level, can rise several feet in less than an hour during periods of intense rainfall. Streams in Hawaii are flashy because rainfall is intense, drainage basins are small, basins and streams are steep, and channel storage is limited. Streamflow generated during periods of heavy rainfall has led to loss of property and human lives in Hawaii. Most Hawaiian streams originate in the mountainous interiors of the islands and terminate at the coast. Streams are significant sculptors of the Hawaiian landscape because of the erosive power of the water they convey. In geologically young areas, such as much of the southern part of the island of Hawaii, well-defined stream channels have not developed because the permeability of the surface rocks generally is so high that rainfall infiltrates before flowing for significant distances on the surface. In geologically older areas that have received significant rainfall, streams and mass wasting have carved out large valleys.

  19. Fluoroalkylated Silicon-Containing Surfaces - Estimation of Solid Surface Energy

    Science.gov (United States)

    2010-10-20

    oleophobicity , solid surface energy, Zisman analysis, Girifalco-Good method 4 Introduction In the recent past, there have been a number of reports on...surfaces that are not wetted by liquid droplets, i. e. superhydrophobic,1-4 oleophobic ,5-15 hygrophobic,16 omniphobic7, 12 surfaces. These surfaces have

  20. Contact of surfaces and contact characteristics of offset surfaces

    Institute of Scientific and Technical Information of China (English)

    Lixin CAO; Hu GONG; Jian LIU

    2008-01-01

    Based on differential geometry, the contact problems of two surfaces are discussed in this paper. The relationship between the contact status of two sur-faces and that of offset surfaces are also analyzed. For a 5-axis NC machining, some research such as optimization of cutter location and calculation of the geometrical cusp height are important. The research results indicate that the relative normal curvature is an important geometrical invariant for describing the contact state of two surfaces. For point contact two surfaces, the calculation equation for the second order remained error is given. For line contact two surfaces, the condition of the second order line contact is that the principal directions and curvatures of the two surfaces are the same along the contact curve. If two surfaces keep the second order line contact, their two offset surfaces will also keep the second order line contact, and their third order remained errors are also uniform with that of the two offset surfaces.

  1. Introduction to Theoretical Surface Science

    Science.gov (United States)

    2007-07-01

    111), (100) and (110) surfaces in the fcc structure even for the hcp metals Y, Zr, Tc and Ru and for the bcc metals Nb and Mo. (a) surface energy in eV...surface energies have been calculated for the fcc structure , even for the hcp metals Y, Zr, Tc and Ru and for the bcc metals Nb and Mo. The surface

  2. Drop Impact on Superheated Surfaces

    NARCIS (Netherlands)

    Tran, A.T.; Staat, H.J.J.; Prosperetti, A.; Sun, C.; Lohse, D.

    2012-01-01

    At the impact of a liquid droplet on a smooth surface heated above the liquid’s boiling point, the droplet either immediately boils when it contacts the surface (“contact boiling”), or without any surface contact forms a Leidenfrost vapor layer towards the hot surface and bounces back (“gentle film

  3. Smart, passive sun facing surfaces

    Science.gov (United States)

    Hively, Lee M.

    1996-01-01

    An article adapted for selectively utilizing solar radiation comprises an absorptive surface and a reflective surface, the absorptive surface and the reflective surface oriented to absorb solar radiation when the sun is in a relatively low position, and to reflect solar radiation when the sun is in a relatively high position.

  4. Approximation of Surfaces by Cylinders

    DEFF Research Database (Denmark)

    Randrup, Thomas

    1998-01-01

    We present a new method for approximation of a given surface by a cylinder surface. It is a constructive geometric method, leading to a monorail representation of the cylinder surface. By use of a weighted Gaussian image of the given surface, we determine a projection plane. In the orthogonal...

  5. Hydrological land surface modelling

    DEFF Research Database (Denmark)

    Ridler, Marc-Etienne Francois

    to imperfect model forecasts. It remains a crucial challenge to account for system uncertainty, so as to provide model outputs accompanied by a quantified confidence interval. Properly characterizing and reducing uncertainty opens-up the opportunity for risk-based decision-making and more effective emergency...... and disaster management. The objective of this study is to develop and investigate methods to reduce hydrological model uncertainty by using supplementary data sources. The data is used either for model calibration or for model updating using data assimilation. Satellite estimates of soil moisture and surface...... temperature are explored in a multi-objective calibration experiment to optimize the parameters in a SVAT model in the Sahel. The two satellite derived variables were effective at constraining most land-surface and soil parameters. A data assimilation framework is developed and implemented with an integrated...

  6. Surface Plasmon Nanophotonics

    CERN Document Server

    Brongersma, Mark L

    2007-01-01

    The development of advanced dielectric photonic structures has enabled tremendous control over the propagation and manipulation of light. Structures such as waveguides, splitters, mixers, and resonators now play a central role in the telecommunications industry. This book will discuss an exciting new class of photonic devices, known as surface plasmon nanophotonic structures. Surface plasmons are easily accessible excitations in metals and semiconductors and involve a collective motion of the conduction electrons. These excitations can be exploited to manipulate electromagnetic waves at optical frequencies ("light") in new ways that are unthinkable in conventional dielectric structures. The field of plasmon nanophotonics is rapidly developing and impacting a wide range of areas including: electronics, photonics, chemistry, biology, and medicine. The book will highlight several exciting new discoveries that have been made, while providing a clear discussion of the underlying physics, the nanofabrication issues...

  7. Anatomically Correct Surface Recovery

    DEFF Research Database (Denmark)

    Jensen, Rasmus Ramsbøl; Nielsen, Jannik Boll; Larsen, Rasmus

    2015-01-01

    using the learned statistics. A quantitative evaluation is performed on a data set of 10 laser scans of ear canal impressions with minimal noise and artificial holes. We also present a qualitative evaluation on authentic partial scans from an actual direct in ear scanner prototype. Compared to a state......We present a method for 3D surface recovery in partial surface scans. The method is based on an Active Shape Model, which is used to predict missing data. The model is constructed using a bootstrap framework, where an initially small collection of hand-annotated samples is used to fit...... to and register unknown samples, resulting in an extensive statistical model. The statistical recovery uses a multivariate point prediction, where the distribution of the points is given by the Active Shape Model. We show how missing data in a partial scan, once point correspondence is achieved, can be predicted...

  8. Surface Acoustic Wave Devices

    DEFF Research Database (Denmark)

    Dühring, Maria Bayard

    of a Mach-Zehnder interferometer (MZI). This is an optical device consisting if one waveguide that is split into two waveguide arms which are assembled again later on. By applying the mechanical field from a SAW the light in the two arms can be modulated and interfere constructively and destructively......The work of this project is concerned with the simulation of surface acoustic waves (SAW) and topology optimization of SAW devices. SAWs are elastic vibrations that propagate along a material surface and are extensively used in electromechanical filters and resonators in telecommunication. A new...... application is modulation of optical waves in waveguides. This presentation elaborates on how a SAW is generated by interdigital transducers using a 2D model of a piezoelectric, inhomogeneous material implemented in the high-level programming language Comsol Multiphysics. The SAW is send through a model...

  9. Surfaces on African sculpture

    Directory of Open Access Journals (Sweden)

    John Mack

    2011-12-01

    Full Text Available Review of: Leonard Kahan, Donna Page, and Pascal James Imperato (eds in collaboration with Charles Bordogna and Bolaji Campbell with an introduction by Patrick McNaughton, Surfaces: Color, Substances, and Ritual Applications on African Sculpture, Indiana University Press, 2009.The book reviewed here has potential interest to a wide range of readers, whether researchers and academics, museum, curators, conservators or connoisseurs. It examines the perception of surface as an aspect of the indigenous understanding of sculpted objects in sub-Saharan Africa, treating of questions of materials, patination, colouration and use. It includes both survey essays and case studies (on the Bamana of Mali and the Yoriuba of Nigeria in a compendium which has suggestive implications beyond the immediate field of the Africanists to whom it is principally addressed.

  10. Secure surface identification codes

    Science.gov (United States)

    Beekhof, F.; Voloshynovskiy, S.; Koval, O.; Villan, R.; Pun, T.

    2008-02-01

    This paper introduces an identification framework for random microstructures of material surfaces. These microstructures represent a kind of unique fingerprints that can be used to track and trace an item as well as for anti-counterfeiting. We first consider the architecture for mobile phone-based item identification and then introduce a practical identification algorithm enabling fast searching in large databases. The proposed algorithm is based on reference list decoding. The link to digital communications and robust perceptual hashing is shown. We consider a practical construction of reference list decoding, which comprizes computational complexity, security, memory storage and performance requirements. The efficiency of the proposed algorithm is demonstrated on experimental data obtained from natural paper surfaces.

  11. Localization on Hopf surfaces

    CERN Document Server

    Assel, Benjamin; Martelli, Dario

    2014-01-01

    We discuss localization of the path integral for supersymmetric gauge theories with an R-symmetry on Hermitian four-manifolds. After presenting the localization locus equations for the general case, we focus on backgrounds with S^1 x S^3 topology, admitting two supercharges of opposite R-charge. These are Hopf surfaces, with two complex structure moduli p,q. We compute the localized partition function on such Hopf surfaces, allowing for a very large class of Hermitian metrics, and prove that this is proportional to the supersymmetric index with fugacities p,q. Using zeta function regularisation, we determine the exact proportionality factor, finding that it depends only on p,q, and on the anomaly coefficients a, c of the field theory. This may be interpreted as a supersymmetric Casimir energy, and provides the leading order contribution to the partition function in a large N expansion.

  12. Surface Plasmon Singularities

    Directory of Open Access Journals (Sweden)

    Gabriel Martínez-Niconoff

    2012-01-01

    Full Text Available With the purpose to compare the physical features of the electromagnetic field, we describe the synthesis of optical singularities propagating in the free space and on a metal surface. In both cases the electromagnetic field has a slit-shaped curve as a boundary condition, and the singularities correspond to a shock wave that is a consequence of the curvature of the slit curve. As prototypes, we generate singularities that correspond to fold and cusped regions. We show that singularities in free space may generate bifurcation effects while plasmon fields do not generate these kinds of effects. Experimental results for free-space propagation are presented and for surface plasmon fields, computer simulations are shown.

  13. Pocked surface neutron detector

    Energy Technology Data Exchange (ETDEWEB)

    McGregor, Douglas (Whitmore Lake, MI); Klann, Raymond (Bolingbrook, IL)

    2003-04-08

    The detection efficiency, or sensitivity, of a neutron detector material such as of Si, SiC, amorphous Si, GaAs, or diamond is substantially increased by forming one or more cavities, or holes, in its surface. A neutron reactive material such as of elemental, or any compound of, .sup.10 B, .sup.6 Li, .sup.6 LiF, U, or Gd is deposited on the surface of the detector material so as to be disposed within the cavities therein. The portions of the neutron reactive material extending into the detector material substantially increase the probability of an energetic neutron reaction product in the form of a charged particle being directed into and detected by the neutron detector material.

  14. Anionic surface binders

    Directory of Open Access Journals (Sweden)

    Aljaž-Rožič Mateja

    2004-01-01

    Full Text Available The MELAMIN Chemical Factory in Kočevje manufactures synthetic resins and binders for the paper industry. Binders based on AKD (alkyl ketene dimer are produced which are used for binding paper and cardboard in the range of neutral and partially basic pH. Cationic and, lately, anionic binders are mostly used for the bulk binding of paper and board. The possibility of using AKD binders on paper or board surfaces is presented. In this case partially cationic AKD binders may be applied. When optical whiteners are used, the application of AKD binders is recommended. In the case of paper it is possible to substitute acrylate binders by AKD binders. The best results are obtained when the paper is first partly treated in bulk and subsequently surface treated.

  15. Helical surface structures

    CERN Document Server

    Brandenburg, A; Brandenburg, Axel; Blackman, Eric G.

    2002-01-01

    Over the past few years there has been growing interest in helical magnetic field structures seen at the solar surface, in coronal mass ejections, as well as in the solar wind. Although there is a great deal of randomness in the data, on average the extended structures are mostly left-handed on the northern hemisphere and right-handed on the southern. Surface field structures are also classified as dextral (= right bearing) and sinistral (= left bearing) occurring preferentially in the northern and southern hemispheres respectively. Of particular interest here is a quantitative measurement of the associated emergence rates of helical structures, which translate to magnetic helicity fluxes. In this review, we give a brief survey of what has been found so far and what is expected based on models. Particular emphasis is put on the scale dependence of the associated fields and an attempt is made to estimate the helicity flux of the mean field vs. fluctuating field.

  16. Minimal surfaces for architectural constructions

    Directory of Open Access Journals (Sweden)

    Velimirović Ljubica S.

    2008-01-01

    Full Text Available Minimal surfaces are the surfaces of the smallest area spanned by a given boundary. The equivalent is the definition that it is the surface of vanishing mean curvature. Minimal surface theory is rapidly developed at recent time. Many new examples are constructed and old altered. Minimal area property makes this surface suitable for application in architecture. The main reasons for application are: weight and amount of material are reduced on minimum. Famous architects like Otto Frei created this new trend in architecture. In recent years it becomes possible to enlarge the family of minimal surfaces by constructing new surfaces.

  17. Tensor Impedance Surfaces

    Science.gov (United States)

    2010-11-30

    ELECTROMAGNEETIC SURFACE IMPEDANCE PROPERTIES FA9550-09-C-0198 DR. ADOUR KABAKIAN HUGHES RESEARCH LABS AFOSR / RSE 875 North Randolph Street, Suit...325 Room 3112 Arlington, Virginia 22203-1768 AFOSR / RSE AFRL-OSR-VA-TR-2012-0770 Distribution A We have investigated and determined how the tensor...the case of a TM wave, which favors propagation along the shorter principal axis. Standard terms apply U U U UU Arje Nachman RSE (Program Manager

  18. From Loops to Surfaces

    CERN Document Server

    Neuberger, H

    2010-01-01

    The generating function for all antisymmetric characters of a Wilson loop matrix in SU(N) Yang Mills theory is the partition function of a fermion living on the curve describing the loop. This generalizes to fermion subsystems living on higher dimensional submanifolds, for example, surfaces. This write-up also contains some extra background, in response to some questions raised during the oral presentation.

  19. Riemann surface and quantization

    Science.gov (United States)

    Perepelkin, E. E.; Sadovnikov, B. I.; Inozemtseva, N. G.

    2017-01-01

    This paper proposes an approach of the unified consideration of classical and quantum mechanics from the standpoint of the complex analysis effects. It turns out that quantization can be interpreted in terms of the Riemann surface corresponding to the multivalent LnΨ function. A visual interpretation of "trajectories" of the quantum system and of the Feynman's path integral is presented. A magnetic dipole having a magnetic charge that satisfies the Dirac quantization rule was obtained.

  20. Surface electrical properties experiment

    Science.gov (United States)

    Simmons, Gene; Strangway, David; Annan, Peter; Baker, Richard G.; Bannister, Lawrence; Brown, Raymon; Cooper, William; Cubley, Dean; deBettencourt, Joseph; England, Anthony W.; Groener, John; Kong, Jin-Au; LaTorraca, Gerald; Meyer, James; Nanda, Ved; Redman, David; Rossiter, James; Tsang, Leung; Urner, Joseph; Watts, Raymond

    1973-01-01

    The surface electrical properties (SEP) experiment was used to explore the subsurface material of the Apollo 17 landing site by means of electromagnetic radiation. The experiment was designed to detect electrical layering, discrete scattering bodies, and the possible presence of water. From the analysis of the data, it was expected that values of the electrical properties (dielectric constant and loss tangent) of lunar material in situ would be obtained.

  1. Water on graphene surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Gordillo, M C [Departamento de Sistemas Fisicos, Quimicos y Naturales, Facultad de Ciencias Experimentales, Universidad Pablo de Olavide, Carretera de Utrera, km 1, E-41013 Sevilla (Spain); Marti, J, E-mail: cgorbar@upo.e, E-mail: jordi.marti@upc.ed [Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, B4-B5 Campus Nord, E-08034 Barcelona, Catalonia (Spain)

    2010-07-21

    In this paper, we summarize the main results obtained in our group about the behavior of water confined inside or close to different graphene surfaces by means of molecular dynamics simulations. These include the inside and outside of carbon nanotubes, and the confinement inside a slit pore or a single graphene sheet. We paid special attention to some thermodynamical (binding energies), structural (hydrogen-bond distributions) and dynamic (infrared spectra) properties, and their comparison to their bulk counterparts.

  2. Music Mixing Surface

    DEFF Research Database (Denmark)

    Gelineck, Steven; Büchert, Morten; Andersen, Jesper

    2013-01-01

    This paper presents a multi-touch based interface for mixing music. The goal of the interface is to provide users with a more intuitive control of the music mix by implementing the so-called stage metaphor control scheme, which is especially suitable for multi-touch surfaces. Specifically, we...... discuss functionality important for the professional music technician (main target user) - functionality, which is especially challenging to integrate when implementing the stage metaphor. Finally we propose and evaluate solutions to these challenges....

  3. Surface Mapping using Quadcopter

    OpenAIRE

    Haugen, Kenneth Eide

    2014-01-01

    This thesis studies the use of unmanned aerial vehicles to perform ice managementin the Arctic Ocean by gathering information about and physically control the iceenvironment. Such a system is needed for safety reasons as marine operations aremoving further north. In order to gather information about the ice environment, aUAV will be used for surface mapping. The quadcopter Parrot AR. Drone 2.0 will be used as a testbed for implementing proposed strategies for guidance, navigation and control ...

  4. Surface modification technology

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Wonbaek; Yu, Hyosin; Chung, Inwha; Rhee, Kang In; Choi, Good Sun; Lee, Chulkyung; Youn, In Ju; Chung, Jinki; Suh, Chang Youl; Yang, Dong Hyo [Korea Institute of Geology Mining and Materials, Taejon (Korea, Republic of)

    1997-12-01

    Domestic production of rare metals has not been achieved due to the low metal content in their ores in the nation. For these reasons, a strategy for the value addition of rare metal sponges by processes like vacuum melting should be seek to meet the growing domestic demand for titanium metals and alloys. However, current domestic market appears not to be sufficient enough for the large scale investment for the expensive vacuum-melting equipment. Besides, related ingot-processing technologies like rolling, extrusion, and forging of titanium should be prepared in advance. In the mean time, the attempt to recycle expensive titanium scraps produced in our nation would be worthwhile in view of the reduction of import from foreign countries and of saving valuable secondary resources. The objectives for this research is to develop a multipurpose inductively-coupled plasma enhanced-surface modification (ICPESM) process to upgrade powder products. Stable plasma was obtained by the impedance harmonization between plasma generator and matching networks maintaining the reflected power at near zero. The chamber vacuum went down to 10{sup -3} torr offering no difficulties to maintain 1.0 torr at which the present experiments were conducted. However, the fluidization in the chamber was unstable when operated in vacuum. The gas distributor and chamber design may need modifications. Argon plasma treatment on the titanium powders changed the surface morphology slightly even though the effect was not significant due possibly to the short treatment duration of 60 minutes. Oxygen plasma oxidized the surface of titanium powders to TiO{sub 2} as confirmed by XRD. The carbon black powders were clustered during oxidation treatment by the fluidization or surface activation by the high power of low temperature plasma. (author). 4 tabs., 15 figs.

  5. The geometry of surfaces contact

    Directory of Open Access Journals (Sweden)

    Siegl J.

    2007-11-01

    Full Text Available This contribution deals with a geometrical exact description of contact between two given surfaces which are defined by the vector functions. These surfaces are substituted at a contact point by approximate surfaces of the second order in accordance with the Taylor series and consequently there is derived a differential surface of these second order surfaces. Knowledge of principal normal curvatures, their directions and the tensor (Dupin indicatrix of this differential surface are necessary for description of contact of these surfaces. For description of surface geometry the first and the second surface fundamental tensor and a further methods of the differential geometry are used. A geometrical visualisation of obtained results of this analysis is made. Method and results of this study will be applied to contact analysis of tooth screw surfaces of screw machines.

  6. Single Crystal Surfaces

    Science.gov (United States)

    Aguilar-Santillan, Joaquin

    2014-06-01

    The present work studies (0001) Al2O3 and (111) Al2MgO4 wetting with pure molten Al by the sessile drop technique from 1073 K to 1473 K (800 °C to 1200 °C) under Ar at PO2 10-15 Pa. Al pure liquid wets a smooth and chemically homogeneous surface of an inert solid, the wetting driving force ( t, T) can be readily studied when surface solid roughness increases in the system. Both crystals planes (0001) Al2O3 and (111) Al2MgO4 have crystallographic surfaces with identical O-2 crystalline positions however considering Mg2+ content in Al2MgO4 structure may influence a reactive mode. Kinetic models results under similar experimental conditions show that Al wetting on (0001) Al2O3 is less reactive than (111) Al2MgO4, however at >1273 K (1000 °C) (0001) Al2O3 transformation occurs and a transition of wetting improves. The (111) Al2MgO4 and Al system promotes interface formations that slow its wetting process.

  7. Origamizing polyhedral surfaces.

    Science.gov (United States)

    Tachi, Tomohiro

    2010-01-01

    This paper presents the first practical method for "origamizing" or obtaining the folding pattern that folds a single sheet of material into a given polyhedral surface without any cut. The basic idea is to tuck fold a planar paper to form a three-dimensional shape. The main contribution is to solve the inverse problem; the input is an arbitrary polyhedral surface and the output is the folding pattern. Our approach is to convert this problem into a problem of laying out the polygons of the surface on a planar paper by introducing the concept of tucking molecules. We investigate the equality and inequality conditions required for constructing a valid crease pattern. We propose an algorithm based on two-step mapping and edge splitting to solve these conditions. The two-step mapping precalculates linear equalities and separates them from other conditions. This allows an interactive manipulation of the crease pattern in the system implementation. We present the first system for designing three-dimensional origami, enabling a user can interactively design complex spatial origami models that have not been realizable thus far.

  8. Surface analysis in microelectronics.

    Science.gov (United States)

    Pignataro, S

    1995-10-01

    The contribution given by surface analysis to solve some problems encountered in the production of electronic power devices have been discussed. Mainly two types of problems have been faced. One of these deal with interfacial chemistry. Three examples have been investigated. The first applies to the improvement of the quality and the reliability of plastic packages through the optimization of the resin/metal and resin/die adhesion. The second relies to the adhesion between polyimide and silicon nitride used in the multilevel technology. The third example refers to the so called die-attach process and related problems. Another area of interest in microelectronics is that of the erosion of various types of surfaces and the possibility of wrong etching. A few examples of the application of surface analytical techniques for these problems will be presented. XPS and SIMS working in imaging and multipoint analysis mode, scanning acoustic microscopy, contact angle measurements as well as peeling and tensile strength measurements are the main tools used to obtain useful data.

  9. Antifungal nanoparticles and surfaces.

    Science.gov (United States)

    Paulo, Cristiana S O; Vidal, Maria; Ferreira, Lino S

    2010-10-11

    Nosocomial fungal infections, an increasing healthcare concern worldwide, are often associated with medical devices. We have developed antifungal nanoparticle conjugates that can act in suspension or attach to a surface, efficiently killing fungi. For that purpose, we immobilized covalently amphotericin B (AmB), a potent antifungal agent approved by the FDA, widely used in clinical practice and effective against a large spectrum of fungi, into silica nanoparticles. These antifungal nanoparticle conjugates are fungicidal against several strains of Candida sp., mainly by contact. In addition, they can be reused up to 5 cycles without losing their activity. Our results show that the antifungal nanoparticle conjugates are more fungistatic and fungicidal than 10 nm colloidal silver. The antifungal activity of the antifungal nanoparticle conjugates is maintained when they are immobilized on a surface using a chemical adhesive formed by polydopamine. The antifungal nanocoatings have no hemolytic or cytotoxic effect against red blood cells and blood mononuclear cells, respectively. Surfaces coated with these antifungal nanoparticle conjugates can be very useful to render medical devices with antifungal properties.

  10. Amphoteric surface active agents

    Directory of Open Access Journals (Sweden)

    Eissa, A.M. F.

    1995-10-01

    Full Text Available 2-[trimethyl ammonium, triethyl ammonium, pyridinium and 2-amino pyridinium] alkanoates, four series of surface active agents containing carbon chain C12, C14, C16 and C18carbon atoms, were prepared. Their structures were characterized by microanalysis, infrared (IR and nuclear magnetic resonance (NMR. Surface and interfacial tension, Krafft point, wetting time, emulsification power, foaming height and critical micelle concentration (cmc were determined and a comparative study was made between their chemical structure and surface active properties. Antimicrobial activity of these surfactants was also determined.

    Se prepararon cuatro series de agentes tensioactivos del tipo 2-[trimetil amonio, trietil amonio, piridinio y 2-amino piridinio] alcanoatos, que contienen cadenas carbonadas con C12, C14, C16 y C18 átomos de carbono.
    Se determinaron la tensión superficial e interfacial, el punto de Krafft, el tiempo humectante, el poder de emulsionamiento, la altura espumante y la concentración critica de miscela (cmc y se hizo un estudio comparativo entre la estructura química y sus propiedades tensioactivas. Se determinó también la actividad antimicrobiana de estos tensioactivos. Estas estructuras se caracterizaron por microanálisis, infrarrojo (IR y resonancia magnética nuclear (RMN.

  11. Surface imaging microscope

    Science.gov (United States)

    Rogala, Eric W.; Bankman, Isaac N.

    2008-04-01

    The three-dimensional shapes of microscopic objects are becoming increasingly important for battlespace CBRNE sensing. Potential applications of microscopic 3D shape observations include characterization of biological weapon particles and manufacturing of micromechanical components. Aerosol signatures of stand-off lidar systems, using elastic backscatter or polarization, are dictated by the aerosol particle shapes and sizes that must be well characterized in the lab. A low-cost, fast instrument for 3D surface shape microscopy will be a valuable point sensor for biological particle sensing applications. Both the cost and imaging durations of traditional techniques such as confocal microscopes, atomic force microscopes, and electron scanning microscopes are too high. We investigated the feasibility of a low-cost, fast interferometric technique for imaging the 3D surface shape of microscopic objects at frame rates limited only by the camera in the system. The system operates at two laser wavelengths producing two fringe images collected simultaneously by a digital camera, and a specialized algorithm we developed reconstructs the surface map of the microscopic object. The current implementation assembled to test the concept and develop the new 3D reconstruction algorithm has 0.25 micron resolution in the x and y directions, and about 0.1 micron accuracy in the z direction, as tested on a microscopic glass test object manufactured with etching techniques. We describe the interferometric instrument, present the reconstruction algorithm, and discuss further development.

  12. Hemocompatibility of polymeric nanostructured surfaces.

    Science.gov (United States)

    Leszczak, Victoria; Smith, Barbara S; Popat, Ketul C

    2013-01-01

    Tissue integration is an important property when inducing transplant tolerance, however, the hemocompatibility of the biomaterial surface also plays an important role in the ultimate success of the implant. Therefore, in order to induce transplant tolerance, it is critical to understand the interaction of blood components with the material surfaces. In this study, we have investigated the adsorption of key blood serum proteins, in vitro adhesion and activation of platelets and clotting kinetics of whole blood on flat polycaprolactone (PCL) surfaces, nanowire (NW) surfaces and nanofiber (NF) surfaces. Previous studies have shown that polymeric nanostructured surfaces improve cell adhesion, proliferation and viability; however it is unclear how these polymeric nanostructured surfaces interact with the blood and its components. Protein adsorption results indicate that while there were no significant differences in total albumin (ALB) adsorption on PCL, NW and NF surfaces, NW surfaces had higher total fibrinogen (FIB) and immunoglobulin-G (IgG) adsorption compared to NF and PCL surfaces. In contrast, NF surfaces had higher surface FIB and IgG adsorption compared to PCL and NW surfaces. Platelet adhesion and viability studies show more adhesion and clustering of platelets on the NF surfaces as compared to PCL and NW surfaces. Platelet activation studies reveal that NW surfaces have the highest percentage of unactivated platelets, whereas NF surfaces have the highest percentage of fully activated platelets. Whole blood clotting results indicate that NW surfaces maintain an increased amount of free hemoglobin during the clotting process compared to PCL and NF surface, indicating less clotting and slower rate of clotting on their surfaces.

  13. Surface stress, surface elasticity, and the size effect in surface segregation

    DEFF Research Database (Denmark)

    Schmid, M.; Hofer, W.; Varga, P.;

    1995-01-01

    Surface stress and surface elasticity of low-index fcc surfaces have been studied using effective-medium theory potentials. In addition to total-energy calculations giving stress components and elastic data for the surface as a whole, the use of artificial atoms with modified size allows us...

  14. Essential Closed Surfaces in a Class of Surface Sum of I-Bundle of Closed Surfaces

    Institute of Scientific and Technical Information of China (English)

    Shu Xin WANG; Rui Feng QIU

    2011-01-01

    In this paper,we will characterize all types of essential closed surfaces in a class of surface sum of I-bundle of closed surfaces,and give an application of the classification in the surface sum of two 3-manifolds.

  15. Conversion from surface wave to surface wave on reflection

    DEFF Research Database (Denmark)

    Novitsky, Andrey

    2010-01-01

    We discuss the reflection and transmission of an incident surface wave to a pure surface wave state at another interface. This is allowed only for special media parameters: at least one of the media must be magnetic. We found such material characteristics that the obliquely incident surface wave...... can be transmitted without changing its direction (nevertheless the amplitude varies). For other media parameters, only normally incident surface waves can be converted to surface waves. We propose applications of the predicted conversion as a beam splitter and polarization filter for surface waves....

  16. Surface forces: Surface roughness in theory and experiment

    Energy Technology Data Exchange (ETDEWEB)

    Parsons, Drew F., E-mail: Drew.Parsons@anu.edu.au; Walsh, Rick B.; Craig, Vincent S. J. [Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)

    2014-04-28

    A method of incorporating surface roughness into theoretical calculations of surface forces is presented. The model contains two chief elements. First, surface roughness is represented as a probability distribution of surface heights around an average surface height. A roughness-averaged force is determined by taking an average of the classic flat-surface force, weighing all possible separation distances against the probability distributions of surface heights. Second the model adds a repulsive contact force due to the elastic contact of asperities. We derive a simple analytic expression for the contact force. The general impact of roughness is to amplify the long range behaviour of noncontact (DLVO) forces. The impact of the elastic contact force is to provide a repulsive wall which is felt at a separation between surfaces that scales with the root-mean-square (RMS) roughness of the surfaces. The model therefore provides a means of distinguishing between “true zero,” where the separation between the average centres of each surface is zero, and “apparent zero,” defined by the onset of the repulsive contact wall. A normal distribution may be assumed for the surface probability distribution, characterised by the RMS roughness measured by atomic force microscopy (AFM). Alternatively the probability distribution may be defined by the histogram of heights measured by AFM. Both methods of treating surface roughness are compared against the classic smooth surface calculation and experimental AFM measurement.

  17. Theory of Solid Surfaces.

    Science.gov (United States)

    1976-05-01

    A~ —~ on 022 CAMBRIDGE UNIV (ENGLAND) CAVEND ISH LAB —. FIG 20/12 —“1THEORY OF SOLID SURFACES .(U) MAY 76 ~J C INKS ON, P W ANDERSON AF AFOSR...A~ D. ~ tLC .7~ ~~~~~~~ I In f or ~a t i oL O f f i c e r 111111 __________ ~~~~~~~~~~~~~~~ _________________ - -ii~ s ~~~~~~~~~~~~~ Abstract

  18. Surface effects in nucleation

    CERN Document Server

    Alekseechkin, Nikolay V

    2016-01-01

    The classical nucleation theory (CNT) concept of a nucleus as a fragment of the bulk new phase fails for nanosized nuclei. An extension of CNT taking into account the properties of the transition region between coexisting bulk phases is proposed. For this purpose, the finite-thickness layer method which is an alternative to the Gibbs one is used; the transition region is considered as a separate (surface) phase. An equation for the nucleation work is derived which is basic for the multivariable theory of nucleation.

  19. Surface-Shading Program

    Science.gov (United States)

    Plessel, Todd

    1991-01-01

    Surface Shading computer program, SURF, developed in support of work of Computational Fluid Dynamics (CFD). Part of CFD graphics software. Accepts input in form of grid and solution files otherwise normally fed to Ames Research Center's version of PLOT3D software from "flow solver" programs. Interactively creates wire-frame, shaded, and function-map parts viewed and then transferred to Ames Research Graphic (ARCGRAPH) standard files, animated with GAS (COSMIC Program ARC-12379). Written in C programming language and requires Silicon Graphics "include" files (e.g., stdio.h, gl.h).

  20. Surface Production of Ions

    Science.gov (United States)

    1992-05-26

    Hill, New York 1938) p. 60-64. 21. S. Dushman, Scientific Foundations of Vacuum Technique, Second Edition (John Wiley & Sons, New York, 1962) p. 91...hydrogen atom (or H + ion) from a metal surface is of funda- Liouville equation, whose solution involves the coupling ma- ’ Jonh . mental interest both from a...Appi. Phys. 50 (4), April 1979 IsB Chapman Glow Discharge Processes John Wiley and Sons New York, 1980 pp 114-115. -H. L. Cui, J. Vac. Sci. Tech. A 9

  1. Spacecraft Surface Charging Handbook

    Science.gov (United States)

    1992-11-01

    Briet, and A. L. Vampola of Aerospace Corporation , H. R. Anderson, A. Holman, and J. Manderesse of SAIC, L. Levy of CERT, R. Viswanathan, G. Barbay, P...camWat a8n truss piece comnat Proper truss to not possible, so eftend res and en OCYA"O axis 0 0 0 0 0 1 width 6 side 2 surface teflon surftce - teflon...p. 62, 1974. Rudie, N. J., et a]., Design Support Guide fior Radiation Hardening oif Space Electronics Svsitems. I RT Corporation , I RT 6409-001, 198

  2. Semiconductor surface protection material

    Science.gov (United States)

    Packard, R. D. (Inventor)

    1973-01-01

    A method and a product for protecting semiconductor surfaces is disclosed. The protective coating material is prepared by heating a suitable protective resin with an organic solvent which is solid at room temperature and converting the resulting solution into sheets by a conventional casting operation. Pieces of such sheets of suitable shape and thickness are placed on the semiconductor areas to be coated and heat and vacuum are then applied to melt the sheet and to drive off the solvent and cure the resin. A uniform adherent coating, free of bubbles and other defects, is thus obtained exactly where it is desired.

  3. Comparative study of the surface layer density of liquid surfaces

    Science.gov (United States)

    Chacón, E.; Fernández, E. M.; Duque, D.; Delgado-Buscalioni, R.; Tarazona, P.

    2009-11-01

    Capillary wave fluctuations blur the inherent structure of liquid surfaces in computer simulations. The intrinsic sampling method subtracts capillary wave fluctuations and yields the intrinsic surface structure, leading to a generic picture of the liquid surface. The most relevant magnitude of the method is the surface layer density ns that may be consistently determined from different properties: the layering structure of the intrinsic density profiles, the turnover rate for surface layer particles, and the hydrodynamic damping rate of capillary waves. The good agreement among these procedures provides evidence for the physical consistency of the surface layering hypothesis, as an inherent physical property of the liquid surfaces. The dependence of the surface compactness, roughness, and exchange rate with temperature is analyzed for several molecular interaction models.

  4. Surface Chemistry in Nanoscale Materials

    Directory of Open Access Journals (Sweden)

    Alex V. Hamza

    2009-12-01

    Full Text Available Although surfaces or, more precisely, the surface atomic and electronic structure, determine the way materials interact with their environment, the influence of surface chemistry on the bulk of the material is generally considered to be small. However, in the case of high surface area materials such as nanoporous solids, surface properties can start to dominate the overall material behavior. This allows one to create new materials with physical and chemical properties that are no longer determined by the bulk material, but by their nanoscale architectures. Here, we discuss several examples, ranging from nanoporous gold to surface engineered carbon aerogels that demonstrate the tuneability of nanoporous solids for sustainable energy applications.

  5. Gromov Hyperbolicity of Riemann Surfaces

    Institute of Scientific and Technical Information of China (English)

    José M. RODR(I)GUEZ; Eva TOUR(I)S

    2007-01-01

    We study the hyperbolicity in the Gromov sense of Riemann surfaces. We deduce the hyperbolicity of a surface from the hyperbolicity of its "building block components". We also prove the equivalence between the hyperbolicity of a Riemann surface and the hyperbolicity of some graph associated with it. These results clarify how the decomposition of a Riemann surface into Y-pieces and funnels affects the hyperbolicity of the surface. The results simplify the topology of the surface and allow us to obtain global results from local information.

  6. SUPER HARD SURFACED POLYMERS

    Energy Technology Data Exchange (ETDEWEB)

    Mansur, Louis K [ORNL; Bhattacharya, R [UES, Incorporated, Dayton, OH; Blau, Peter Julian [ORNL; Clemons, Art [ORNL; Eberle, Cliff [ORNL; Evans, H B [UES, Incorporated, Dayton, OH; Janke, Christopher James [ORNL; Jolly, Brian C [ORNL; Lee, E H [Consultant, Milpitas, CA; Leonard, Keith J [ORNL; Trejo, Rosa M [ORNL; Rivard, John D [ORNL

    2010-01-01

    High energy ion beam surface treatments were applied to a selected group of polymers. Of the six materials in the present study, four were thermoplastics (polycarbonate, polyethylene, polyethylene terephthalate, and polystyrene) and two were thermosets (epoxy and polyimide). The particular epoxy evaluated in this work is one of the resins used in formulating fiber reinforced composites for military helicopter blades. Measures of mechanical properties of the near surface regions were obtained by nanoindentation hardness and pin on disk wear. Attempts were also made to measure erosion resistance by particle impact. All materials were hardness tested. Pristine materials were very soft, having values in the range of approximately 0.1 to 0.5 GPa. Ion beam treatment increased hardness by up to 50 times compared to untreated materials. For reference, all materials were hardened to values higher than those typical of stainless steels. Wear tests were carried out on three of the materials, PET, PI and epoxy. On the ion beam treated epoxy no wear could be detected, whereas the untreated material showed significant wear.

  7. Surface Active Components: Review

    Directory of Open Access Journals (Sweden)

    Z. Shafiei

    2014-03-01

    Full Text Available Biosurfactant or surface active components are produced by many different microorganisms. Biosurfactants are amphiphilic molecules with both hydrophilic and hydrophobic (generally hydrocarbon moieties that partition preferentially a within the interface between fluid phases with some other degrees of polarity and hydrogen bonding including oil/water or air/water interfaces. These properties render surfactants able to reducing surface and interfacial tension and forming microemulsion where hydrocarbons can solubilize in water or where water can solubilize in hydrocarbons, the majority of surfactants have gained importance in the fields of enhanced oil recovery, environmental bioremediation, food processing and pharmaceuticals. However, large-scale production of these molecules has not been realized as a result of low yields in production processes and high recovery and purification costs. This review article represents a classification of biosurfactant in addition to their microbial origin and effect of some nutrition and environmental factor for high production of biosurfactant. The nitrogen, carbon sources and environmental factors can make a difference key to the regulating biosurfactants synthesis Fascination with microbial surfactants have been steadily increasing recently because of advantages over the chemical surfactants for example environmentally friendly nature, lower toxicity, higher biodegradability, higher selectivity and specific gravity at extreme temperature, pH and salinity. For this reason the demand of biosurfactant are increasing day by day.

  8. Concepts in surface physics

    CERN Document Server

    Desjonquères, M -C

    1993-01-01

    This textbook is intended as an introduction to surface science for graduate students. It began as a course of lectures that we gave at the University of Paris (Orsay). Its main objectives are twofold: to provide the reader with a compre­ hensive presentation of the basic principles and concepts of surface physics and to show the usefulness of these concepts in the real world by referring to experiments. It starts at a rather elementary level since it only requires a knowledge of solid state physics, quantum mechanics, thermodynamics and statistical physics which does not exceed the background usually taught to students early in their university courses. However, since it finally reaches an advanced level, we have tried to render it as self-contained as possible so that it remains accessible even to an unexperienced reader. Furthermore, the emphasis has been put on a pedagogical level rather than on a technical level. In this spirit, whenever possible, models which are simplified, but which contain the featu...

  9. Earth's surface heat flux

    Directory of Open Access Journals (Sweden)

    J. H. Davies

    2009-11-01

    Full Text Available We present a revised estimate of Earth's surface heat flux that is based upon a heat flow data-set with 38 347 measurements, which is 55% more than used in previous estimates. Our methodology, like others, accounts for hydrothermal circulation in young oceanic crust by utilising a half-space cooling approximation. For the rest of Earth's surface, we estimate the average heat flow for different geologic domains as defined by global digital geology maps; and then produce the global estimate by multiplying it by the total global area of that geologic domain. The averaging is done on a polygon set which results from an intersection of a 1 degree equal area grid with the original geology polygons; this minimises the adverse influence of clustering. These operations and estimates are derived accurately using methodologies from Geographical Information Science. We consider the virtually un-sampled Antarctica separately and also make a small correction for hot-spots in young oceanic lithosphere. A range of analyses is presented. These, combined with statistical estimates of the error, provide a measure of robustness. Our final preferred estimate is 47±2 TW, which is greater than previous estimates.

  10. Smooth surfaces from bilinear patches: Discrete affine minimal surfaces

    KAUST Repository

    Käferböck, Florian

    2013-06-01

    Motivated by applications in freeform architecture, we study surfaces which are composed of smoothly joined bilinear patches. These surfaces turn out to be discrete versions of negatively curved affine minimal surfaces and share many properties with their classical smooth counterparts. We present computational design approaches and study special cases which should be interesting for the architectural application. 2013 Elsevier B.V.

  11. Relationship of wood surface energy to surface composition

    Science.gov (United States)

    Feipeng P. Liu; Timothy G. Rials; John Simonsen

    1998-01-01

    The wood cell wall is composed of cellulose, lignin, hemicelluloses, and extractives. Thus, the surface energy of the wood material must be some combination of the surface energies of these components. The influence of extractives on wood surface chemistry can be important in diverse industrial applications, such as coating, pulping, and wood-based composites. In this...

  12. Liquid droplet movement on horizontal surface with gradient surface energy

    Institute of Scientific and Technical Information of China (English)

    LIAO Qiang; WANG Hong; ZHU Xun; LI Mingwei

    2006-01-01

    A surface with gradient surface energy was fabricated on a silicon wafer by using the chemical vapor deposition (CVD) technology with the dodecyltrichlorosilane (C12H25Cl3Si) vapor which was adsorbed chemically on the surface of the silicon wafer to form a self-assemble monolayer (ASM) and thus a gradient profile of wettability. The microscopic contours of the gradient surface were measured with Seiko SPA400 atom force microscope (AFM). And the surface wettability profile was characterized by the sessile drop method, measuring the contact angle of fine water droplets that lay on the gradient surface, to represent the distribution of the surface energy on the surface. Using a high-speed video imaging system, the motion of water droplet on the horizontal gradient surface was visualized and the transient velocity was measured under ambient condition. The experimental results show that the liquid droplets can be driven to move from hydrophobic side to hydrophilic side on the horizontal gradient surface and the velocity of droplet can reach up to 40 mm/s. In addition, the motion of the water droplet can be generally divided into two stages: an acceleration stage and a deceleration stage. The droplet presents a squirming movement on the surface with a lower peak velocity and a larger extent of deceleration motion. And the static advancing contact angle of the droplet is obviously larger than the dynamic advancing contact angle on the gradient energy surface.

  13. Femtosecond laser-induced surface wettability modification of polystyrene surface

    Science.gov (United States)

    Wang, Bing; Wang, XinCai; Zheng, HongYu; Lam, YeeCheong

    2016-12-01

    In this paper, we demonstrated a simple method to create either a hydrophilic or hydrophobic surface. With femtosecond laser irradiation at different laser parameters, the water contact angle (WCA) on polystyrene's surface can be modified to either 12.7° or 156.2° from its original WCA of 88.2°. With properly spaced micro-pits created, the surface became hydrophilic probably due to the spread of the water droplets into the micro-pits. While with properly spaced micro-grooves created, the surface became rough and more hydrophobic. We investigated the effect of laser parameters on WCAs and analyzed the laser-treated surface roughness, profiles and chemical bonds by surface profilometer, scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). For the laser-treated surface with low roughness, the polar (such as C—O, C=O, and O—C=O bonds) and non-polar (such as C—C or C—H bonds) groups were found to be responsible for the wettability changes. While for a rough surface, the surface roughness or the surface topography structure played a more significant role in the changes of the surface WCA. The mechanisms involved in the laser surface wettability modification process were discussed.

  14. Test surfaces useful for calibration of surface profilometers

    Science.gov (United States)

    Yashchuk, Valeriy V; McKinney, Wayne R; Takacs, Peter Z

    2013-12-31

    The present invention provides for test surfaces and methods for calibration of surface profilometers, including interferometric and atomic force microscopes. Calibration is performed using a specially designed test surface, or the Binary Pseudo-random (BPR) grating (array). Utilizing the BPR grating (array) to measure the power spectral density (PSD) spectrum, the profilometer is calibrated by determining the instrumental modulation transfer.

  15. Mars surface albedo and changes

    CERN Document Server

    Vincendon, Mathieu; Altieri, Francesca; Ody, Anouck

    2014-01-01

    The pervasive Mars dust is continually transported between surface and atmosphere. When on the surface, dust increases the albedo of darker underlying rocks and regolith, which modifies climate energy balance and must be quantified. Remote observation of surface albedo absolute value and albedo change is however complicated by dust itself when lifted in the atmosphere. Here we present a method to calculate and map the bolometric solar hemispherical albedo of the Martian surface using the 2004 - 2010 OMEGA imaging spectrometer dataset. This method takes into account aerosols radiative transfer, surface photometry, and instrumental issues such as registration differences between visible and near-IR detectors. Resulting albedos are on average 17% higher than previous estimates for bright surfaces while similar for dark surfaces. We observed that surface albedo changes occur mostly during the storm season due to isolated events. The main variations are observed during the 2007 global dust storm and during the fol...

  16. GEWEX Surface Radiation Budget (SRB)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The NASA/GEWEX Surface Radiation Budget (SRB) Release-3.0 data sets contains global 3-hourly, daily, monthly/3-hourly, and monthly averages of surface and top-of...

  17. Thermochemical surface engineering of steels

    DEFF Research Database (Denmark)

    Thermochemical Surface Engineering of Steels provides a comprehensive scientific overview of the principles and different techniques involved in thermochemical surface engineering, including thermodynamics, kinetics principles, process technologies and techniques for enhanced performance of steels...

  18. The surface science of nanocrystals

    Science.gov (United States)

    Boles, Michael A.; Ling, Daishun; Hyeon, Taeghwan; Talapin, Dmitri V.

    2016-02-01

    All nanomaterials share a common feature of large surface-to-volume ratio, making their surfaces the dominant player in many physical and chemical processes. Surface ligands -- molecules that bind to the surface -- are an essential component of nanomaterial synthesis, processing and application. Understanding the structure and properties of nanoscale interfaces requires an intricate mix of concepts and techniques borrowed from surface science and coordination chemistry. Our Review elaborates these connections and discusses the bonding, electronic structure and chemical transformations at nanomaterial surfaces. We specifically focus on the role of surface ligands in tuning and rationally designing properties of functional nanomaterials. Given their importance for biomedical (imaging, diagnostics and therapeutics) and optoelectronic (light-emitting devices, transistors, solar cells) applications, we end with an assessment of application-targeted surface engineering.

  19. Integrated Surface Global Hourly Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Integrated Surface Data (ISD) is digital data set DSI-3505, archived at the National Climatic Data Center (NCDC). The ISD database is composed of worldwide surface...

  20. Computer representation of molecular surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Max, N.L.

    1981-07-06

    This review article surveys recent work on computer representation of molecular surfaces. Several different algorithms are discussed for producing vector or raster drawings of space-filling models formed as the union of spheres. Other smoother surfaces are also considered.

  1. Solvay Conference on Surface Science

    CERN Document Server

    1988-01-01

    The articles collected in this volume give a broad overview of the current state of surface science. Pioneers in the field and researchers met together at this Solvay Conference to discuss important new developments in surface science, with an emphasis on the common area between solid state physics and physical chemistry. The contributions deal with the following subjects: structure of surfaces, surface science and catalysis, two-dimensional physics and phase transitions, scanning tunneling microscopy, surface scattering and surface dynamics, chemical reactions at surfaces, solid-solid interfaces and superlattices, and surface studies with synchrotron radiation. On each of these subjects an introductory review talk and a number of short research contributions are followed by extensive discussions, which appear in full in the text. This nineteenth Solvay Conference commemorates the 75th anniversary of the Solvay Institutes.

  2. Surface normals and barycentric coordinates

    Directory of Open Access Journals (Sweden)

    Mullineux Glen

    1996-01-01

    Full Text Available The normal to a triangular parametric surface is investigated where the parameters used are barycentric coordinates. Formulae for the normal are obtained for non-rational and rational surfaces.

  3. Transgressive Surface as Sequence Boundary

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Analysis of the four cases of the sequence boundary (SB)-transgressive surface (TS) relation in nature shows that applying transgressive surfaces as sequence boundaries has the following merits: it improves the methodology of stratigraphic subdivision; the position of transgressive surface in a sea level curve is relatively fixed; the transgressive surface is a transforming surface of the stratal structure; in platforms or ramps, the transgressive surface is the only choice for determining the sequence boundary; the transgressive surface is a readily recognized physical surface reflected by seismic records in seismostratigraphy. The paper reaches a conclusion that to delineate a SB in terms of the TS is theoretically and practically better than to delineate it between highstand and lowstand sediments as has been done traditionally.

  4. Waveguiding with surface plasmon polaritons

    DEFF Research Database (Denmark)

    Han, Zhanghua; Bozhevolnyi, Sergey I.

    2014-01-01

    Surface plasmon polaritons (SPPs) are electromagnetic modes propagating along metal-dielectric interfaces. Various SPP modes can be supported by flat and curved, single and multiple surfaces, exhibiting remarkable properties, including the possibility of concentrating electromagnetic fields beyond...

  5. GODAE, SFCOBS - Surface Temperature Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — GODAE, SFCOBS - Surface Temperature Observations: Ship, fixed/drifting buoy, and CMAN in-situ surface temperature. Global Telecommunication System (GTS) Data. The...

  6. Surfing wavy surfaces: Bacteria-surface interactions in flow

    Science.gov (United States)

    Miño, Gastón L.; Kantsler, Vasily; Stocker, Roman

    2014-11-01

    Complex processes occur when microbes interact with surfaces, from mixture enhancement and motion rectification to biofilm formation. Microbe-surface interactions frequently occur in flowing fluids, and flow has recently been shown to have itself unexpected consequences on the dynamics of motile microbes. Here we report on microfluidic experiments in which the interactions of Escherichia coli bacteria with wavy surfaces was quantified in the presence of fluid flow, a model system for naturally occurring topography of many real surfaces. We quantify surface interactions in terms of incident and scattering angles over a range of flow conditions, and compare results to the observations for a microchannel with straight walls.

  7. Surface plasmon polariton waveguiding in random surface nanostructures

    DEFF Research Database (Denmark)

    Bozhevolnyi, S. I.; Volkov, V. S.; Leosson, K.

    2003-01-01

    In this study, guiding of surface plasmon polaritons excited at a gold film surface along corrugation-free channels in regions that are covered with randomly located surface scatterers, is considered using near-field microscopy for imaging of surface plasmon polariton intensity distributions at t...... demonstrate well-defined surface plasmon polariton guiding along corrugation-free 2 micro-m wide channels in random structures and, in the wavelength range 738-774 nm, low-loss guiding around 20degrees bends having a bend radius of approx. 15 micro-m....

  8. Preperation for a Clean Surface

    Directory of Open Access Journals (Sweden)

    Aurimas Ralys

    2012-12-01

    Full Text Available The article reviews techniques for preparing clean surfaces used in the manufacturing process, considers the types of clean surfaces and their role in modern production and provides the classification methods of arranging such surfaces. The paper also discusses the principles of methods for solvent cleaning, aqueous cleaning, ultrasonic cleaning, precision cleaning and mechanical cleaning. The study focuses on the possibility of adjusting a clean surface using a water flow, including cavitation.Article in Lithuanian

  9. Preperation for a Clean Surface

    Directory of Open Access Journals (Sweden)

    Aurimas Ralys

    2013-02-01

    Full Text Available The article reviews techniques for preparing clean surfaces used in the manufacturing process, considers the types of clean surfaces and their role in modern production and provides the classification methods of arranging such surfaces. The paper also discusses the principles of methods for solvent cleaning, aqueous cleaning, ultrasonic cleaning, precision cleaning and mechanical cleaning. The study focuses on the possibility of adjusting a clean surface using a water flow, including cavitation.Article in Lithuanian

  10. Surface glycosylation of polymeric membranes

    Institute of Scientific and Technical Information of China (English)

    DAI ZhengWei; WAN LingShu; XU ZhiKang

    2008-01-01

    Surface glycosylation of polymeric membranes has been inspired by the structure of natural biomembranes. It refers to that glycosyl groups are introduced onto the membrane surface by various strategies, which combine the separation function of the membrane with the biological function of the saccharides in one system. In this review, progress in the surface glycosylation of polymeric membranes is highlighted in two aspects, i.e. the glycosylation methods and the potential applications of the surface-glycosylated membranes.

  11. Flow over riblet curved surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Loureiro, J B R; Freire, A P Silva, E-mail: atila@mecanica.ufrj.br [Mechanical Engineering Program, Federal University of Rio de Janeiro (COPPE/UFRJ), C.P. 68503, 21.941-972, Rio de Janeiro, RJ (Brazil)

    2011-12-22

    The present work studies the mechanics of turbulent drag reduction over curved surfaces by riblets. The effects of surface modification on flow separation over steep and smooth curved surfaces are investigated. Four types of two-dimensional surfaces are studied based on the morphometric parameters that describe the body of a blue whale. Local measurements of mean velocity and turbulence profiles are obtained through laser Doppler anemometry (LDA) and particle image velocimetry (PIV).

  12. Dropwise Condensation of Low Surface Tension Fluids on Omniphobic Surfaces

    Science.gov (United States)

    Rykaczewski, Konrad; Paxson, Adam T.; Staymates, Matthew; Walker, Marlon L.; Sun, Xiaoda; Anand, Sushant; Srinivasan, Siddarth; McKinley, Gareth H.; Chinn, Jeff; Scott, John Henry J.; Varanasi, Kripa K.

    2014-03-01

    Compared to the significant body of work devoted to surface engineering for promoting dropwise condensation heat transfer of steam, much less attention has been dedicated to fluids with lower interfacial tension. A vast array of low-surface tension fluids such as hydrocarbons, cryogens, and fluorinated refrigerants are used in a number of industrial applications, and the development of passive means for increasing their condensation heat transfer coefficients has potential for significant efficiency enhancements. Here we investigate condensation behavior of a variety of liquids with surface tensions in the range of 12 to 28 mN/m on three types of omniphobic surfaces: smooth oleophobic, re-entrant superomniphobic, and lubricant-impregnated surfaces. We demonstrate that although smooth oleophobic and lubricant-impregnated surfaces can promote dropwise condensation of the majority of these fluids, re-entrant omniphobic surfaces became flooded and reverted to filmwise condensation. We also demonstrate that on the lubricant-impregnated surfaces, the choice of lubricant and underlying surface texture play a crucial role in stabilizing the lubricant and reducing pinning of the condensate. With properly engineered surfaces to promote dropwise condensation of low-surface tension fluids, we demonstrate a four to eight-fold improvement in the heat transfer coefficient.

  13. Surfaces. [characterization of surface properties for predicting bond quality

    Science.gov (United States)

    Buckley, D. H.

    1983-01-01

    Techniques for the characterization of surface cleanliness and roughness for predicting the quality of an adhesive bond are outlined. Generally, smooth surfaces are only available from cleavage of crystalline materials along a natural cleavage plane. Films must be deposited on metal surfaces to achieve the same smoothness. Once the surfaces are clean, however, reaction with the ambient atmosphere becomes likely through diffusive and absorption processes, producing asperities. Electron diffraction, Auger electron, and X ray emission spectroscopy are used to characterize surface condition. Once the surface is observed to be clean, the application of an adhesive will usually prohibit separation along the adhesive; separation is then confined to the weaker of the two materials. Finally, the use of polytetrafluorothylene adhesive to test the adhesion between polymers and metal surfaces is described.

  14. Surface plasmon polariton waveguiding in random surface nanostructures

    DEFF Research Database (Denmark)

    Bozhevolnyi, S. I.; Volkov, V. S.; Leosson, K.

    2003-01-01

    In this study, guiding of surface plasmon polaritons excited at a gold film surface along corrugation-free channels in regions that are covered with randomly located surface scatterers, is considered using near-field microscopy for imaging of surface plasmon polariton intensity distributions...... at the surface. In the wavelength range 713-815 nm, we observed complete inhibition of the surface plasmon polariton propagation inside the random structures composed of individual (approx. 70 nm high) gold bumps (and their clusters) placed on a 55 nm thick gold film with a bump density of 75 micro-m-2. We...... demonstrate well-defined surface plasmon polariton guiding along corrugation-free 2 micro-m wide channels in random structures and, in the wavelength range 738-774 nm, low-loss guiding around 20degrees bends having a bend radius of approx. 15 micro-m....

  15. Plasma surface modification of polymers

    Science.gov (United States)

    Hirotsu, T.

    1980-01-01

    Thin plasma polymerization films are discussed from the viewpoint of simplicity in production stages. The application of selective, absorbent films and films used in selective permeability was tested. The types of surface modification of polymers discussed are: (1) plasma etching, (2) surface coating by plasma polymerized thin films, and (3) plasma activation surface graft polymerization.

  16. Surface Effects in Magnetic Nanoparticles

    CERN Document Server

    Fiorani, Dino

    2005-01-01

    This volume is a collection of articles on different approaches to the investigation of surface effects on nanosized magnetic materials, with special emphasis on magnetic nanoparticles. The book aims to provide an overview of progress in the understanding of surface properties and surface driven effects in magnetic nanoparticles through recent results of different modeling, simulation, and experimental investigations.

  17. Emerging trends in surface metrology

    DEFF Research Database (Denmark)

    Lonardo, P.M.; Lucca, D.A.; De Chiffre, Leonardo

    2002-01-01

    Recent advancements and some emerging trends in the methods and instruments used for surface and near surface characterisation are presented, considering the measurement of both topography and physical properties. In particular, surfaces that present difficulties in measurement or require new pro...

  18. Surface chemical modification of nanocrystals

    Energy Technology Data Exchange (ETDEWEB)

    Helms, Brett Anthony; Milliron, Delia Jane; Rosen, Evelyn Louise; Buonsanti, Raffaella; Llordes, Anna

    2017-03-14

    Nanocrystals comprising organic ligands at surfaces of the plurality of nanocrystals are provided. The organic ligands are removed from the surfaces of the nanocrystals using a solution comprising a trialkyloxonium salt in a polar aprotic solvent. The removal of the organic ligands causes the nanocrystals to become naked nanocrystals with cationic surfaces.

  19. Surface properties of HMX crystal

    Science.gov (United States)

    Yee, R. Y.; Adicoff, A.; Dibble, E. J.

    1980-01-01

    The surface properties of Beta-HMX crystals were studied. The surface energies of three principal crystal faces were obtained by measuring contact angles with several reference liquids. The surface energies and polarity of the three crystal faces are found to be different.

  20. Valuations on arithmetic surfaces

    Institute of Scientific and Technical Information of China (English)

    XU Ning

    2009-01-01

    In this paper,we give the definition of the height of a valuation and the definition of the big field Cp,G,where p is a prime and G R is an additive subgroup containing 1.We conclude that Cp,G is a field and Cp,G is algebraically closed.Based on this the author obtains the complete classification of valuations on arithmetic surfaces.Furthermore,for any m ≤ n ∈ Z,let Vm,n be an R-vector space of dimension n - m + 1,whose coordinates are indexed from rn to n.We generalize the definition of Cp,G,where p is a prime and G C Vm,n is an additive subgroup containing 1.We also conclude that Cp,G is a field if m ≤ 0 ≤ n.

  1. Valuations on arithmetic surfaces

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    In this paper, we give the definition of the height of a valuation and the definition of the big field Cp,G, where p is a prime and GR is an additive subgroup containing 1. We conclude that Cp,G is a field and Cp,G is algebraically closed. Based on this the author obtains the complete classification of valuations on arithmetic surfaces. Furthermore, for any m ≤n∈ Z, let Vm,n be an R-vector space of dimension n-m + 1, whose coordinates are indexed from m to n. We generalize the definition of Cp,G, where p is a prime and GVm,n is an additive subgroup containing 1. We also conclude that Cp,G is a field if m ≤0 ≤n.

  2. Bacterial surface adaptation

    Science.gov (United States)

    Utada, Andrew

    2014-03-01

    Biofilms are structured multi-cellular communities that are fundamental to the biology and ecology of bacteria. Parasitic bacterial biofilms can cause lethal infections and biofouling, but commensal bacterial biofilms, such as those found in the gut, can break down otherwise indigestible plant polysaccharides and allow us to enjoy vegetables. The first step in biofilm formation, adaptation to life on a surface, requires a working knowledge of low Reynolds number fluid physics, and the coordination of biochemical signaling, polysaccharide production, and molecular motility motors. These crucial early stages of biofilm formation are at present poorly understood. By adapting methods from soft matter physics, we dissect bacterial social behavior at the single cell level for several prototypical bacterial species, including Pseudomonas aeruginosa and Vibrio cholerae.

  3. Hydrological land surface modelling

    DEFF Research Database (Denmark)

    Ridler, Marc-Etienne Francois

    Recent advances in integrated hydrological and soil-vegetation-atmosphere transfer (SVAT) modelling have led to improved water resource management practices, greater crop production, and better flood forecasting systems. However, uncertainty is inherent in all numerical models ultimately leading...... and disaster management. The objective of this study is to develop and investigate methods to reduce hydrological model uncertainty by using supplementary data sources. The data is used either for model calibration or for model updating using data assimilation. Satellite estimates of soil moisture and surface...... hydrological and tested by assimilating synthetic hydraulic head observations in a catchment in Denmark. Assimilation led to a substantial reduction of model prediction error, and better model forecasts. Also, a new assimilation scheme is developed to downscale and bias-correct coarse satellite derived soil...

  4. Surface enhanced thermo lithography

    KAUST Repository

    Coluccio, Maria Laura

    2017-01-13

    We used electroless deposition to fabricate clusters of silver nanoparticles (NPs) on a silicon substrate. These clusters are plasmonics devices that induce giant electromagnetic (EM) field increments. When those EM field are absorbed by the metal NPs clusters generate, in turn, severe temperature increases. Here, we used the laser radiation of a conventional Raman set-up to transfer geometrical patterns from a template of metal NPs clusters into a layer of thermo sensitive Polyphthalaldehyde (PPA) polymer. Temperature profile on the devices depends on specific arrangements of silver nanoparticles. In plane temperature variations may be controlled with (i) high nano-meter spatial precision and (ii) single Kelvin temperature resolution on varying the shape, size and spacing of metal nanostructures. This scheme can be used to generate strongly localized heat amplifications for applications in nanotechnology, surface enhanced thermo-lithography (SETL), biology and medicine (for space resolved cell ablation and treatment), nano-chemistry.

  5. Surface Temperature Data Analysis

    Science.gov (United States)

    Hansen, James; Ruedy, Reto

    2012-01-01

    Small global mean temperature changes may have significant to disastrous consequences for the Earth's climate if they persist for an extended period. Obtaining global means from local weather reports is hampered by the uneven spatial distribution of the reliably reporting weather stations. Methods had to be developed that minimize as far as possible the impact of that situation. This software is a method of combining temperature data of individual stations to obtain a global mean trend, overcoming/estimating the uncertainty introduced by the spatial and temporal gaps in the available data. Useful estimates were obtained by the introduction of a special grid, subdividing the Earth's surface into 8,000 equal-area boxes, using the existing data to create virtual stations at the center of each of these boxes, and combining temperature anomalies (after assessing the radius of high correlation) rather than temperatures.

  6. Laser surface texturing of tool steel: textured surfaces quality evaluation

    Science.gov (United States)

    Šugár, Peter; Šugárová, Jana; Frnčík, Martin

    2016-05-01

    In this experimental investigation the laser surface texturing of tool steel of type 90MnCrV8 has been conducted. The 5-axis highly dynamic laser precision machining centre Lasertec 80 Shape equipped with the nano-second pulsed ytterbium fibre laser and CNC system Siemens 840 D was used. The planar and spherical surfaces first prepared by turning have been textured. The regular array of spherical and ellipsoidal dimples with a different dimensions and different surface density has been created. Laser surface texturing has been realized under different combinations of process parameters: pulse frequency, pulse energy and laser beam scanning speed. The morphological characterization of ablated surfaces has been performed using scanning electron microscopy (SEM) technique. The results show limited possibility of ns pulse fibre laser application to generate different surface structures for tribological modification of metallic materials. These structures were obtained by varying the processing conditions between surface ablation, to surface remelting. In all cases the areas of molten material and re-cast layers were observed on the bottom and walls of the dimples. Beside the influence of laser beam parameters on the machined surface quality during laser machining of regular hemispherical and elipsoidal dimple texture on parabolic and hemispherical surfaces has been studied.

  7. Surface-wave photonic quasicrystal

    CERN Document Server

    Gao, Zhen; Zhang, Youming; Xu, Hongyi; Zhang, Baile

    2016-01-01

    In developing strategies of manipulating surface electromagnetic waves, it has been recently recognized that a complete forbidden band gap can exist in a periodic surface-wave photonic crystal, which has subsequently produced various surface-wave photonic devices. However, it is not obvious whether such a concept can be extended to a non-periodic surface-wave system that lacks translational symmetry. Here we experimentally demonstrate that a surface-wave photonic quasicrystal that lacks periodicity can also exhibit a forbidden band gap for surface electromagnetic waves. The lower cutoff of this forbidden band gap is mainly determined by the maximum separation between nearest neighboring pillars. Point defects within this band gap show distinct properties compared to a periodic photonic crystal for the absence of translational symmetry. A line-defect waveguide, which is crafted out of this surface-wave photonic quasicrystal by shortening a random row of metallic rods, is also demonstrated to guide and bend sur...

  8. Helium atom scattering from surfaces

    CERN Document Server

    1992-01-01

    High resolution helium atom scattering can be applied to study a number of interesting properties of solid surfaces with great sensitivity and accuracy. This book treats in detail experimental and theoretical aspects ofthis method as well as all current applications in surface science. The individual chapters - all written by experts in the field - are devoted to the investigation of surface structure, defect shapes and concentrations, the interaction potential, collective and localized surface vibrations at low energies, phase transitions and surface diffusion. Over the past decade helium atom scattering has gained widespread recognitionwithin the surface science community. Points in its favour are comprehensiveunderstanding of the scattering theory and the availability of well-tested approximation to the rigorous theory. This book will be invaluable to surface scientists wishing to make an informed judgement on the actual and potential capabilities of this technique and its results.

  9. Beauville Surfaces and Groups 2012

    CERN Document Server

    Garion, Shelly; Vdovina, Alina; Springer Proceedings in Mathematics & Statistics : Volume 123

    2015-01-01

    This collection of surveys and research articles explores a fascinating class of varieties: Beauville surfaces. It is the first time that these objects are discussed from the points of view of algebraic geometry as well as group theory. The book also includes various open problems and conjectures related to these surfaces. Beauville surfaces are a class of rigid regular surfaces of general type, which can be described in a purely algebraic combinatoric way. They play an important role in different fields of mathematics like algebraic geometry, group theory and number theory. The notion of Beauville surface was introduced by Fabrizio Catanese in 2000 and, after the first systematic study of these surfaces by Ingrid Bauer, Fabrizio Catanese and Fritz Grunewald, there has been an increasing interest in the subject. These proceedings reflect the topics of the lectures presented during the workshop ‘Beauville Surfaces and Groups 2012’, held at Newcastle University, UK in June 2012. This conference brought toge...

  10. Drop impact on superheated surfaces

    CERN Document Server

    Tran, Tuan; Prosperetti, Andrea; Sun, Chao; Lohse, Detlef

    2011-01-01

    At impact of a liquid droplet on a smooth surface heated above the liquid's boiling point, the droplet either immediately boils when it contacts the surfaces (``contact boiling''), or without any surface contact forms a Leidenfrost vapor layer towards the hot surface and bounces back (``gentle film boiling''), or both forms the Leidenfrost layer and ejects tiny droplets upward (``spraying film boiling''). We experimentally determine conditions under which impact behaviors in each regime can be realized. We show that the dimensionless maximum spreading $\\gamma$ of impacting droplets on the heated surfaces in both gentle and spraying film boiling regimes shows a universal scaling with the Weber number $\\We$ ($\\gamma\\sim\\We^{2/5}$) -- regardless of surface temperature and of liquid properties -- which is much steeper than for the impact on non-heated (hydrophilic or hydrophobic) surfaces ($\\gamma\\sim\\We^{1/4}$). We also intereferometrically measure the vapor thickness under the droplet.

  11. Anti-fouling bioactive surfaces.

    Science.gov (United States)

    Yu, Qian; Zhang, Yanxia; Wang, Hongwei; Brash, John; Chen, Hong

    2011-04-01

    Bioactive surfaces refer to surfaces with immobilized bioactive molecules aimed specifically at promoting or supporting particular interactions. Such surfaces are of great importance for various biomedical and biomaterials applications. In the past few years, considerable effort has been made to create bioactive surfaces by forming specific biomolecule-modified surfaces on a non-biofouling "base" or "background". Hydrophilic and bioinert polymers have been widely used as anti-fouling layers that resist non-specific protein interactions. They can also serve as "spacers" to effectively move the immobilized biomolecule away from the surface, thus enhancing its bioactivity. In this review we summarize several successful approaches for the design and preparation of bioactive surfaces based on different types of anti-fouling/spacer materials. Some perspectives on future research in this area are also presented.

  12. Approximation of Surfaces by Cylinders

    DEFF Research Database (Denmark)

    Randrup, Thomas

    1998-01-01

    We present a new method for approximation of a given surface by a cylinder surface. It is a constructive geometric method, leading to a monorail representation of the cylinder surface. By use of a weighted Gaussian image of the given surface, we determine a projection plane. In the orthogonal...... projection of the surface onto this plane, a reference curve is determined by use of methods for thinning of binary images. Finally, the cylinder surface is constructed as follows: the directrix of the cylinder surface is determined by a least squares method minimizing the distance to the points...... in the projection within a tolerance given by the reference curve, and the rulings are lines perpendicular to the projection plane. Application of the method in ship design is given....

  13. Surface-induced evaporative cooling

    Institute of Scientific and Technical Information of China (English)

    Ke Min; Yan Bo; Cheng Feng; Wang Yu-Zhu

    2009-01-01

    The effects of surface-induced evaporative cooling on an atom chip are investigated. The evolutions of temperature, number and phase-space density of the atom cloud are measured when the atom cloud is brought close to the surface. Rapid decrease of the temperature and number of the atoms is found when the atom-surface distance is < 100 μm. A gain of about a factor of five on the phase-space density is obtained. It is found that the efficiency of the surface-induced evaporative cooling depends on the atom-surface distance and the shape of the evaporative trap. When the atoms are moved very close to the surface, severe heating is observed, which dominates when the holding time is > 8 ms. It is important that the surface-induced evaporative cooling offers novel possibilities for the realization of a continuous condensation, where a spatially varying evaporative cooling is required.

  14. Mars Surface Simulations

    Science.gov (United States)

    Nørnberg, Per; Merrison, Jonathan P.; Gunnlaugsson, Haraldur P.

    2010-05-01

    Laboratory simulations of the Martian surface are of importance to broaden scientific understanding of the physical processes, but also in order to develop the technology necessary for exploration of the planet. The Mars Simulation Laboratory at Aarhus University [1] has been involved in such simulations for around ten years and has developed several experimental facilities for carrying out science or instrument testing under conditions similar to those at the Martian surface, specifically low pressure, low temperature and importantly recreating the wind flow environment and dust suspension (reproducing the Martian dusty aerosol) using Mars analogue material [2]. The science involved in this simulation work has covered a broad spectrum including, erosion induced mineralogy/chemistry, particulate electrification, magnetic properties of Martian dust, biological survival, UV induced chemistry/mineralogy (using a solar simulator), adhesion/cohesion processes and the wind driven transport of dust and sand [3,4]. With regard to technology the wind tunnel facilities have been used in the development of the latest wind and dust sensing instrumentation [5,6]. With support from the European Space Agency (ESA) and Danish national funding an advanced Mars simulation facility has recently been constructed (2009). This wind tunnel facility has a cross section of 2 x 1 m and a length of 8 m, a temperature range down to below -120C, wind speeds in excess of 20m/s, and automated dust control. With a range of (specialised) sensing instrumentation it provides the opportunity to perform a new generation of scientific experiments and allow testing and technology development in the most realistic and rigorous environment. As well as being available for the space agencies, this facility will be open to all potential scientific collaborators. Also European planetary scientists may benefit from support through the EU Europlanet FP7 networking programme. For more information on access

  15. La teoría social de Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    López Yáñez, Aina D.

    2005-12-01

    Full Text Available The interpretation of Rousseau's writings from categorical fields of sociological theory make way for a reconstruction of the author's proposals based on fundamental sociological concepts that would later be laid out by classic 19th century sociologists. Obviously, these concepts are not found in Rousseau's work in terms of a formal theory as so much as notions or ideas of great intellectual value. In this paper we proceed to draw out the social theory lines from Rousseau's work. Hence we put forth our reconstruction of a rousseaunian vision of human history, mankind's condition, social action and society as a whole. Theories that make up a social ontology that is clearly marked by the belief of substantiated alienation and negativity both intrinsic to social phenomena.

    La interpretación de la obra de Rousseau desde las categorías propias de la teoría sociológica da lugar a una reconstrucción de las propuestas del autor basada en aquellos conceptos fundamentales de la disciplina que serían asentados después por los sociólogos clásicos del siglo XIX. Obviamente, estos conceptos no se encuentran en los escritos de Rousseau en los términos de una teoría formalizada, pero sí como nociones o ideas de gran valor intelectual. En el presente trabajo procedemos a mostrar las grandes líneas de la teoría social de Rousseau. Se expone de este modo nuestra reconstrucción de la visión rousseauniana de la historia humana, de la condición del hombre, de la acción social y de la sociedad como totalidad, teorías que conforman una ontología claramente atravesada por la creencia en la alienación y negatividad consustanciales a los fenómenos sociales.

  16. Jacques Derrida and the Practice of the Phenomena. Dialectic and Temporality of the Trascendental Exercise

    Directory of Open Access Journals (Sweden)

    Carlo Molinar Min

    2016-06-01

    Full Text Available In this essay I would like to propose a reinterpretation of certain passages of the earlier Derrida’s works, specifically on Edmund Husserl. I will focus mainly on his dissertation (Mémoire d’études superieures and his Introduction to the Husserlian appendix The origin of geometry. My purpose is to point out some aspects that I consider relevant for the development of the following Derrida’s philosophy. First of all, I’ll try to take into account the concept of dialectic in his transition from Kant to Husserl. Then, starting from Derrida’s interpretation of The Lectures on Internal Time-Consciousness, I’ll try to explain the meaning of what could be described as an aesthetic refoundation of the transcendental. In these early stages Derrida attempted to lay the foundation of what he’ll then call “quasi-transcendental”. From this perspective, we might note that the deconstructive reading – as such – involves a phenomenological attention towards the original contamination between the conditions of possibility and the empirical field. Therefore, the exercise of deconstruction has something to do with difference as différance from the very beginning.

  17. Jean-Jacques Is Alive and Well: Rousseau and Contemporary Sociobiology

    Science.gov (United States)

    Masters, Roger D.

    1978-01-01

    A description of the author's personal fascination with and study of Rousseau's life. Discusses Rousseau's many questions that are relevant to evolutionary biology, sociobiology, anthropology, and ethology. Questions concern the nature of human nature, the origin of human society, nurture-nature influences on humans, and the nature of male-female…

  18. Jean-Jacques Rousseau among the Footnotes: Mapping Interdisciplinary Research in Social Science Citation Index.

    Science.gov (United States)

    Herubel, Jean-Pierre V. M.; Buchanan, Anne L.

    1994-01-01

    Examination of citations indexed in Social Science Citation Index (SSCI) reveals salient patterns which can be helpful in determining interdisciplinarity and/or disciplinarity. Collection development efforts can be enhanced by examination of citation patterns of published research related to a classical social science author such as Jean-Jacques…

  19. Jacques Lacan's Conception of Language%拉康的语言观

    Institute of Scientific and Technical Information of China (English)

    岳凤梅

    2005-01-01

    拉康的语言观是在综合了前人语言观的基础上建立起来的,其中主要包括弗洛伊德对语言与无意识的关系的论述,索绪尔的结构主义语言学,雅克布森的隐喻、换喻说,以及海德格尔的语言是人的家园的观点.拉康对语言与人的主体性之间的关系作了独特理解,使人们对笛卡尔以来的理性主义哲学传统有了新的认识.

  20. Education in the Realm of the Senses: Understanding Paulo Freire's Aesthetic Unconscious through Jacques Ranciere

    Science.gov (United States)

    Lewis, Tyson Edward

    2009-01-01

    In this article I re-examine the role that aesthetics play in Paulo Freire's pedagogy of the oppressed. As opposed to the vast majority of scholarship in this area, I suggest that aesthetics play a more centralised role in pedagogy above and beyond arts-based curricula. To help clarify Freire's position, I will argue that underlying the linguistic…