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Sample records for juan carlos garavaglia

  1. Juan Carlos D'Olivo: A portrait

    Science.gov (United States)

    Aguilar-Arévalo, Alexis A.

    2013-06-01

    This report attempts to give a brief bibliographical sketch of the academic life of Juan Carlos D'Olivo, researcher and teacher at the Instituto de Ciencias Nucleares of UNAM, devoted to advancing the fields of High Energy Physics and Astroparticle Physics in Mexico and Latin America.

  2. Juan Carlos Onetti encerrado con un solo juguete: un libro

    OpenAIRE

    Becerra, Eduardo

    2009-01-01

    La presente semblanza de Juan Carlos Onetti pretende rescatar un hilo conductor de su vida basado en ciertas actitudes y episodios que se remontan a su niñez y se prolongan hasta sus últimos años. En ellas puede verse una relación entre la soledad, el encierro y la imaginación que explica tanto ciertos rasgos de su personalidad como características fundamentales de su literatura This profile of Juan Carlos Onetti aims to recover a principal current of his life based on ce...

  3. Cultural Words in Slovenian Translations of the Works of Juan Rulfo and Carlos Fuentes

    Directory of Open Access Journals (Sweden)

    Uršula Kastelic Vukadinović

    2016-12-01

    Full Text Available The paper, based on the author´s thesis entitled Kulturno besedje v slovenskih prevodih del Juana Rulfa in Carlosa Fuentesa, discusses cultural words in the Slovenian translations of the novel Pedro Páramo, some of the stories of The Plain in Flames by Juan Rulfo published in the same volume and the novel The Death of Artemio Cruz by Carlos Fuentes. In the analyzed texts there are a number of terms (also including cultural words which denote animals, plants, dishes, clothes and geographical surroundings of Mexico that may be unknown even to the Spanish speaking readers who are not familiar with the wider Hispanic environment, and Mexican in particular. Cultural words have no exact equivalents in other languages and cultures, therefore, they most commonly indicate that we are reading a translated text. These are also the elements that contribute to the foreignization of the target text and show us the textual world as exotic and unknown. The translator of the studied texts, Alenka Bole Vrabec, tends to choose the transfer of the cultural words in order to retain some local colour, even when she could find equivalents in the Slovenian or, at least, adapt the words to the writing in accordance with the rules of the Slovenian language. These decisions accentuate the foreignizing character of her translations.

  4. Juan Carlos Rodríguez y la renovación de marxismo althusseriano

    Directory of Open Access Journals (Sweden)

    Malcolm K. Read

    2013-06-01

    Full Text Available In the immediate aftermath of 1968, a number of works on Marxist literary theory appeared that were destined to command the attention not only of writers who were re- cognizably ‘Marxist’ or ‘Marxian’ but of others who boasted little in the way of allegiance to the Marxist tradition, however broadly defined. Two such works were Terry Eagleton’s Criticism and Ideology (1976 and Fredric Jameson’s The Political Unconscious (1981. While deeply and confessedly indebted to Louis Althusser for kick-starting their careers, inspirationally speaking, both Eagleton and Jameson were subsequently to reveal an ambiguous, even troubled relation to the French Marxist: Eagleton, through a series of texts that, their unquestionable distinction notwithstanding, run hot and cold in their commitment to ‘Althusserianism’; Jameson, through a brand of Hegelianizing Marxism that finally proved unable to take on board the full complexity of the Althusserian legacy. Preceding both these scholars chronologically, and bearing comparison with them in terms of intellectual range, ambition, and productivity, was Juan Carlos Rodríguez, whose Teoría e historia de la producción ideológica appeared in 1974. Except that there the similarities end, for whereas Eagleton and Jameson were destined to achieve star status within their profession, a rather different career trajectory awaited Rodríguez.

  5. Palabras del presidente Carlos S. Menem, a 20 años de la muerte de Juan Domingo Perón

    OpenAIRE

    Menem, Carlos Saúl

    1994-01-01

    Radio Universidad Nacional de La Plata trasmite en directo y registra para su Archivo de la Palabra el mensaje oficial del presidente Carlos Saúl Menem, difundido por cadena nacional de radio y televisión, al cumplirse 20 años del fallecimiento del presidente Juan Domingo Perón.

  6. 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

  7. From Political Unity to State Fragmentation: Crime, Law and Sovereignty in Carlos Fuentes and Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Guillermo J. Fajardo Sotelo

    2018-01-01

    Full Text Available The author analyzes the late work of Mexican writer Carlos Fuentes to think about the Mexican political system and its transformations. Also, the author uses the figure of Pedro Paramo as an example of total sovereignty in comparison with the state fragmentation and the multi-sovereign forms that Carlos Fuentes uses in his novels as tools to demonstrate how the transformations have operated in Mexico: from a strong state to a fragmented government surrounded by other forms of control such as globalization, crime, and necroempowerment.

  8. Tumores gástricos malignos en el Hospital San Juan de Dios y la Clínica Carlos Lleras Restrepo de Bogotá

    OpenAIRE

    Viviana L. Arias; Mauricio A. Paláu; Juan José Yunis; Diana Palacios; Orlando Ricaurte

    2001-01-01

    Se revisaron 9.349 informes de estudios de especímenes quirúrgicos del archivo del Departamento de Patología del Hospital San Juan de Dios y la Clínica Carlos Lleras Restrepo de Bogotá en el tiempo comprendido entre enero 1 de 1999 y mayo 31 de 2000. Se seleccionaron los especímenes con diagnóstico de tumores gástricos que correspondieron al 8,61% de los casos; 2,41% fueron tumores benignos y 6,2% malignos De éstos 91,67% fueron adenocarcinomas, 2,78 % linfomas, 1,85% tumores carcinoides y 1,...

  9. URJC GB dataset: Community-based seed bank of Mediterranean high-mountain and semi-arid plant species at Universidad Rey Juan Carlos (Spain).

    Science.gov (United States)

    Alonso, Patricia; Iriondo, José María

    2014-01-01

    The Germplasm Bank of Universidad Rey Juan Carlos was created in 2008 and currently holds 235 accessions and 96 species. This bank focuses on the conservation of wild-plant communities and aims to conserve ex situ a representative sample of the plant biodiversity present in a habitat, emphasizing priority ecosystems identified by the Habitats Directive. It is also used to store plant material for research and teaching purposes. The collection consists of three subcollections, two representative of typical habitats in the center of the Iberian Peninsula: high-mountain pastures (psicroxerophylous pastures) and semi-arid habitats (gypsophylic steppes), and a third representative of the genus Lupinus. The high-mountain subcollection currently holds 153 accessions (63 species), the semi-arid subcollection has 76 accessions (29 species,) and the Lupinus subcollection has 6 accessions (4 species). All accessions are stored in a freezer at -18 °C in Kilner jars with silica gel. The Germplasm Bank of Universidad Rey Juan Carlos follows a quality control protocol which describes the workflow performed with seeds from seed collection to storage. All collectors are members of research groups with great experience in species identification. Herbarium specimens associated with seed accessions are preserved and 63% of the records have been georreferenced with GPS and radio points. The dataset provides unique information concerning the location of populations of plant species that form part of the psicroxerophylous pastures and gypsophylic steppes of Central Spain as well as populations of genus Lupinus in the Iberian Peninsula. It also provides relevant information concerning mean seed weight and seed germination values under specific incubation conditions. This dataset has already been used by researchers of the Area of Biodiversity and Conservation of URJC as a source of information for the design and implementation of experimental designs in these plant communities. Since

  10. URJC GB dataset: Community-based seed bank of Mediterranean high-mountain and semi-arid plant species at Universidad Rey Juan Carlos (Spain

    Directory of Open Access Journals (Sweden)

    Patricia Alonso

    2014-03-01

    Full Text Available The Germplasm Bank of Universidad Rey Juan Carlos was created in 2008 and currently holds 235 accessions and 96 species. This bank focuses on the conservation of wild-plant communities and aims to conserve ex situ a representative sample of the plant biodiversity present in a habitat, emphasizing priority ecosystems identified by the Habitats Directive. It is also used to store plant material for research and teaching purposes. The collection consists of three subcollections, two representative of typical habitats in the center of the Iberian Peninsula: high-mountain pastures (psicroxerophylous pastures and semi-arid habitats (gypsophylic steppes, and a third representative of the genus Lupinus. The high-mountain subcollection currently holds 153 accessions (63 species, the semi-arid subcollection has 76 accessions (29 species, and the Lupinus subcollection has 6 accessions (4 species. All accessions are stored in a freezer at -18 °C in Kilner jars with silica gel. The Germplasm Bank of Universidad Rey Juan Carlos follows a quality control protocol which describes the workflow performed with seeds from seed collection to storage. All collectors are members of research groups with great experience in species identification. Herbarium specimens associated with seed accessions are preserved and 63% of the records have been georreferenced with GPS and radio points. The dataset provides unique information concerning the location of populations of plant species that form part of the psicroxerophylous pastures and gypsophylic steppes of Central Spain as well as populations of genus Lupinus in the Iberian Peninsula. It also provides relevant information concerning mean seed weight and seed germination values under specific incubation conditions. This dataset has already been used by researchers of the Area of Biodiversity and Conservation of URJC as a source of information for the design and implementation of experimental designs in these plant

  11. La Casa Natal de Carlos J. Finlay. Un monumento del siglo XVIII Carlos Juan Finlay´s home: a XVII century monument

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    Gisela Gil Turnes

    2006-08-01

    Full Text Available En el siglo XVIII se realizan en la ciudad de Camagüey grandes obras arquitectónicas, sobresaliendo entre ellas las de tipo religioso y doméstico; y de estas últimas la casa marcada con el número 4, actual 5 de la calle Cristo es una de sus muestras relevantes. En ella vio la luz una de las figuras más sobresaliente de la medicina mundial, el doctor Carlos J. Finlay Barrés. El trabajo trata de los valores históricos y arquitectónicos del inmueble. El primero representado por el nacimiento del eminente científico; y el segundo por ser fiel exponente de las codificaciones en la vivienda colonial de la arquitectura camagüeyana en dicha etapaDuring the XVIII century big architectural Works carried out, standing out tose of religious and domestic types, and, among the last ones, the house marked with number 4, on Cristo Street is an outstanding sample. There, one the most relevant figures of the world medicine: Doctor Carlos J. Finlay Barrés, was born. This work is about the historical and architectural values of this property. The first one represented by the birth of the eminent scientist, and the second, for being a faithful exponent of the codes in the colonial housing of Camague y ´ s architecture in this stage

  12. 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

  13. 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 Multimedia

    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

  14. Dahiri, Mohammed; Carmelo García, Juan; González, Santiago; Lozano, Carlos; Otega, Alejandra y Thieux, Laurence (eds., Sociedad civil y transiciones en el norte de África. Egipto, Túnez, Argelia, Marruecos. Barcelona, Icaria Editorial, 2013, 250 pp.

    Directory of Open Access Journals (Sweden)

    Antonio Javier Martín Castellanos

    2014-10-01

    Full Text Available Dahiri, Mohammed; Carmelo García, Juan; González, Santiago; Lozano, Carlos; Otega, Alejandra y Thieux, Laurence (eds., Sociedad civil y transiciones en el norte de África. Egipto, Túnez, Argelia, Marruecos. Barcelona, Icaria Editorial, 2013, 250 pp.

  15. Compte rendu de Juan Carlos Garrot, Jean-Louis Guereña, Mónica Zapata (dir., Figures de la censure dans les mondes hispanique et hispano-américain

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    Emilie Mendonça

    2009-07-01

    Full Text Available Publicada en el 2009, esta compilación prolonga el trabajo llevado a cabo por el grupo de investigación francés CIREMIA (Centre Interuniversitaire de Recherche sur l’Education et la Culture dans le Monde Ibérique et Ibéro-Américain en su colección «Études hispaniques», cuyos últimos volúmenes analizaban texto e imagen en el ámbito escolar, literario y cultural. Bajo la coordinación de Juan Carlos Garrot, Jean-Louis Guereña y Mónica Zapata, estas Figures de la censure dans les mondes hispaniq...

  16. Velasco, Juan Carlos (2016. El azar de las fronteras. Políticas migratorias, ciudadanía y justicia. Ciudad de México, México: Fondo de Cultura Económica. 372 pp.

    Directory of Open Access Journals (Sweden)

    Luis Esteban Rubio

    2017-06-01

    Full Text Available Durante la Edad Moderna y Contemporánea numerosos retos se han abordado, de manera ideal o real, desde una perspectiva cosmopolita. El descubrimiento de América, las guerras entre Estados europeos en el siglo XVIII o la Segunda Guerra Mundial, son ejemplos de ello. En la época actual, la humanidad se enfrenta también a una serie de retos globales de gran magnitud: el mantenimiento de la paz, el respeto y garantía de los derechos humanos, el cambio climático, las migraciones internacionales, el aumento de la desigualdad, las pandemias, el terrorismo, los paraísos fiscales o el colapso de los sistemas financieros. La nueva obra de Juan Carlos Velasco busca precisamente abordar con carácter descriptivo, valorativo y normativo uno de esos retos, las migraciones internacionales, y adopta para ello una mirada cosmopolita. La misma se inserta así dentro del corpus teórico de carácter cosmopolita que, principalmente desde el final de la Guerra Fría, una corriente de pensadores (por ejemplo, Seyla Benhabib, Thomas Pogge, Martha Nussbaum o Kwame Anthony Appiah está desarrollando con la voluntad de dar respuestas a los temas de nuestro tiempo...

  17. Hábitos y consumos televisivos de la generación digital desde la perspectiva de los usos y gratificaciones. Estudio de caso en la Universidad Rey Juan Carlos

    Directory of Open Access Journals (Sweden)

    Irene Flores Ruiz

    2014-06-01

    Full Text Available Desde la teoría de los Usos y Gratificaciones, el objetivo de este trabajo es comparar los hábitos y razones del consumo televisivo juvenil en la pantalla tradicional y en el ordenador. A partir de una encuesta aplicada a una muestra de 213 estudiantes de primero a tercero de titulaciones de grado de ciencias sociales de la Universidad Rey Juan Carlos, se analizarán sus hábitos de consumo en los dos soportes, se examinarán cuáles sus formatos televisivos preferidos así como sus motivos de exposición para conocer cuál es el soporte que les proporciona una mayor gratificación. Entre los principales resultados hallados se destaca que la televisión convencional continúa siendo el medio preferido para una generación que, todavía, no ha culminado la transición hacia el medio digital y que el consumo se realiza de manera individual en los dos tipos de soportes analizados. Son individuos que realizan un consumo televisivo multitarea y en los que el visionado no les resta tiempo a la realización de otro tipo de actividades. Se inclinan hacia la televisión por Internet por sus características más que por su oferta y hacia la televisión convencional porque quieren entretenerse, informarse y aprender.

  18. Del ¿Por qué no te callas? al ¿Por qué no vamos a la playa? La comunicación para la paz a la luz de procesos interactivos entre el rey Juan Carlos I de Borbón y el presidente Hugo Chávez y su cobertura mediática

    Directory of Open Access Journals (Sweden)

    Francisco José Alfaro-Pareja

    2011-01-01

    Full Text Available Este artículo analiza algunas de las características de la comunicación para la paz, a través del abordaje de dos procesos específicos de interacción entre los jefes de Estado de España y Venezuela, Juan Carlos I de Borbón y Hugo Chávez: su encuentro en la Cumbre de Jefes de Estado y de Gobierno de Iberoamérica celebrada en Santiago de Chile en noviembre 2007 y la reunión sostenida en el Palacio de Miravent en Mallorca en julio de 2008. Todo ello a fin de analizar los elementos que potenciaron el conflicto político (a partir de la famosa frase ¿Por qué no te callas? y aquellos que ayudaron a regularlo por vías pacíficas mediante la comunicación para la paz. Adicionalmente, analizaremos la forma en que estas noticias fueron cubiertas por medios masivos de información y su actuación para la promoción de la violencia y de la paz.

  19. 33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Zone: San Juan Harbor, San Juan, PR. (a) Regulated area. A moving safety zone is established in the...

  20. Marketing San Juan Basin gas

    International Nuclear Information System (INIS)

    Posner, D.M.

    1988-01-01

    Marketing natural gas produced in the San Juan Basin of New Mexico and Colorado principally involves four gas pipeline companies with significant facilities in the basin. The system capacity, transportation rates, regulatory status, and market access of each of these companies is evaluated. Because of excess gas supplies available to these pipeline companies, producers can expect improved take levels and prices by selling gas directly to end users and utilities as opposed to selling gas to the pipelines for system supply. The complexities of transporting gas today suggest that the services of an independent gas marketing company may be beneficial to smaller producers with gas supplies in the San Juan Basin

  1. 33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable Waters COAST... Guard District § 165.776 Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico (a...

  2. Graafikatriennaalil osalev Juan Manuel Echavarria saabub Tallinna

    Index Scriptorium Estoniae

    2011-01-01

    12.-15. aprillini 2011 külastab Tallinna Columbia kunstnik Juan Manuel Echavarria. Tema holograafiliste trükiste sarjast "Reekviem NN" (2008-2010), mida eksponeeritakse Tallinna XV graafikatriennaalil Kumu Kunstimuuseumis

  3. Fray Juan Rizi en Italia

    Directory of Open Access Journals (Sweden)

    Salort Pons, Salvador

    1999-03-01

    Full Text Available Since Tormo, Gusi and Lafuente wrote fray Juan Rizi's monograph in 1930, and Ángulo & Pérez Sánchez revised years later this study in their book Pintura madrileña del segundo tercio del siglo XVII, very little has been published about the life and work of the Benedictine painter. Furthermore, the Italian journey of Rizi, that involved the last 20 years of his life, has always been an enigma, resolved only in certain aspects, thanks to few news supplied by his biographers and the manuscripts the monk wrote during his staying in the Montecassino abbey. Our recent discovery of 8 new canvases painted by Rizi to decorate the Saints Cosme and Damian's chapel in the main church of Trevi nel Lazio (Frosinone, Italy, as well as the location of several new drawings in the Montecassino and Vatican libraries, will allow us to study his activity as painter in Italy and also to profile, with more accuracy, the history of the last years of his life.No disponible

  4. San Juan Uchucuanicu: évolution historique

    Directory of Open Access Journals (Sweden)

    1975-01-01

    Full Text Available La communauté de San Juan est reconnue depuis 1939. Une première partie concerne l’organisation de la reducción de San Juan vers le milieu du XVIe siècle. Le poids fiscal s’exerce durement sur le village et la crise est générale dans toute la vallée du Chancay au XVIIe. siècle. La christianisation des habitants est définitive au milieu de ce même siècle. C’est vers la fin du XVIIe siècle et durant tout le XVIIIe que se multiplient les conflits entre San Juan et les villages voisins liés aux terrains de pâture et à la possession de l’eau. La deuxième partie du travail concerne les rapports de la communauté de San Juan avec le Pérou contemporain : contrainte fiscale toujours très lourde durant la fin de l’époque coloniale, exactions des militaires juste avant l’indépendance. La période républicaine voit toujours les conflits avec les villages voisins mais aussi la naissance de familles qui cherchent à retirer le maximum de la communauté. Les terres sont divisées et attribuées : la détérioration de l’organisation communale traditionnelle est manifeste. L4es conflits se multiplient entre petits propriétaires, mais aussi avec les haciendas voisines : c’est l’apparition d’une véritable lutte de classes. La situation actuelle est incertaine, le poids de l’économie marchande se développe avec l’exode des jeunes. Que sera la communauté San Juan à la fin de ce siècle? La comunidad de San Juan está reconocida desde 1939. La primera parte concierne a la organización de la 'reducción' de San Juan hacia mediados del siglo XVI. El peso fiscal se ejerce duramente sobre el pueblo y en el siglo XVII la crisis es general en todo el valle de Chancay. Hacia mediados del mismo siglo la cristianización de los habitantes es definitiva. Es hacia fines del siglo XVII y durante todo el siglo XVIII que se multiplican los conflictos entre San Juan y los pueblos vecinos, los que están relacionados con los terrenos de

  5. Juan: a 9-year-old Latino boy with ADHD.

    Science.gov (United States)

    DuPaul, George J; Pérez, Victor H; Kuo, Alice; Stein, Martin T

    2010-04-01

    Juan, a 9-year-old Latino male, was referred to a community clinic by his third-grade teacher for evaluation of classroom behavior problems. He is an only child and lives with both parents. At home, Juan speaks Spanish with his parents although he occasionally speaks English with his father. His father came to the U.S. from Mexico as a small child and completed the 12 grade in the U.S. Juan's mother completed 8 grade in Mexico and immigrated to the U.S. as a teenager.Juan's mother reported that he has had no significant medical problems. Her report of his behavior included an inability to focus on tasks at hand and easy distractibility. She was concerned that the principal of the school mentioned that Juan may be asked to repeat the 3 grade or change schools. In the clinic, Juan sat quietly but appeared to be daydreaming and attentive to the conversation. The pediatrician called the principal who expressed frustration with Juan's behavior. In class, he was very fidgety, did not pay attention and usually did not answer questions. He also bothered other students when they were working. The principal explained that because Juan's school was a Spanish language immersion school, there were no special education services available. If a student at the school required special education services, he or she would be transferred to another school in the same school district. An evaluation for an Individualized Education Plan (IEP) indicated that Juan had above average cognitive ability (90 percentile), with superior ability to problem solve and process information simultaneously (99 percentile). The Woodcock Johnson III (Spanish version) indicated average achievement in academic skills, with low average in reading fluency, comprehension and spelling. On the Test of Auditory-Perceptual Skills, Juan tested generally low average in all domains, and was at the 14 percentile for both auditory number and auditory word memory. On the Test of Visual-Perceptual Skills, Juan scored

  6. 78 FR 35593 - Special Local Regulation; Christmas Boat Parade, San Juan Harbor; San Juan, PR

    Science.gov (United States)

    2013-06-13

    ... individually or cumulatively have a significant effect on the human environment. This proposed rule involves.... Pearson, Captain, U.S. Coast Guard, Captain of the Port San Juan. [FR Doc. 2013-13994 Filed 6-12-13; 8:45...

  7. Carlos Romero

    Directory of Open Access Journals (Sweden)

    2008-05-01

    Full Text Available Entrevista (en español Presentación Carlos Romero, politólogo, es profesor-investigador en el Instituto de Estudios Políticos de la Facultad de Ciencias Jurídicas y Políticas de la Universidad Central de Venezuela, en donde se ha desempeñado como coordinador del Doctorado, subdirector y director del Centro de Estudios de Postgrado. Cuenta con ocho libros publicados sobre temas de análisis político y relaciones internacionales, siendo uno de los últimos Jugando con el globo. La política exter...

  8. El testamento de Juan Moliner (†1403: un físico al servicio de la monarquía navarra durante la Baja Edad Media

    Directory of Open Access Journals (Sweden)

    Serrano Larráyoz, Fernando

    2012-12-01

    Full Text Available This work is an approach to the life and socioeconomic context of Juan Moliner (doctor of kings Carlos II and Carlos III of Navarre, based on the study of his testament. The document provides enlightening information about this figure, quite unknown despite being one of the most important Christian doctors at the service of Carlos III ‘El Noble’. In addition, his last will has a religious and spiritual dimension that allows to have an overall perspective on the mentality and lifestyle of this historical character.

    A través del testamento de Juan Moliner, médico de los reyes Carlos II y Carlos III de Navarra, el presente estudio pretende acercarse a su persona, familia, ámbito social y nivel socioeconómico en el que desarrolla su vida. Los datos que aporta dicho documento arrojan algo de luz sobre su ciclo vital, hasta el momento bastante desconocido, pese a ser uno de los más importantes médicos cristianos que atendieron a Carlos III ‘el Noble’. A todo esto hay que añadir la dimensión espiritual y religiosa de sus últimas voluntades, que vienen a completar la mentalidad y el modo de vida de este personaje.

  9. Juan's Dilemma: A New Twist on the Old Lemon Battery

    Science.gov (United States)

    Hunt, Vanessa; Sorey, Timothy; Balandova, Evguenia; Palmquist, Bruce

    2010-01-01

    When life hands you lemons, make a battery! In this article, the authors describe an activity they refer to as "Juan's Dilemma," an extension of the familiar lemon-battery activity (Goodisman 2001). Juan's Dilemma integrates oxidation and reduction chemistry with circuit theory in a fun, real-world exercise. The authors designed this activity for…

  10. El San Juan y la Universidad Nacional

    Directory of Open Access Journals (Sweden)

    Victor Manuel Moncayo

    2000-04-01

    Full Text Available Encontrar una solución para la crisis de la Fundación San Juan de Dios no es un problema jurídico, ni tampoco de gestión ordinaria de una institución. La crisis es de tal magnitud que desborda las capacidades reales de la organización actual y, en especial, de su Junta Directiva o de quienes ejerzan su representación legal o de quienes colaboran como empleados o trabajadores de la institución.

  11. En el recuerdo siempre: Juan Velasco Moreno

    OpenAIRE

    Naranjo-Ramírez, J.

    2017-01-01

    Semblanza personal, cultural y artística de Juan Velasco Moreno. Sintéticamente se consideran y glosan: sus valores individuales y personales, su amplios y rotundos valores culturales, el valor de su creación literaria (varios libros de poemas y obras de teatro), sus iniciativas excepcionales en el mundo del teatro, considerando desde la fundación del Círculo Cultural Calíope, a las valiosas aportaciones en forma de representación escénica de comedias, dramas y autos sacramentales, que fueron...

  12. Juan Antonio Rubio Rodriguez (1944 – 2010)

    CERN Multimedia

    His colleagues and friends

    2010-01-01

    It was with deep sorrow and great sadness that we learnt that Juan Antonio Rubio Rodriguez had passed away on 16th January 2010. Juan Antonio was born in Madrid on 4th June 1944, and received his Ph. D. in Physics in 1971 from“Universidad Complutense de Madrid”. He was a CERN Fellow (1968 – 1971) and subsequently worked at JEN (currently CIEMAT) as a researcher (1971 – 1976). He was leader of the HEP group (1977 – 1981), leader of the Nuclear and Particle Physics Division (1981 – 1983), Director for Basic Research (1983 – 1987) and Scientific Director (1984 – 1987). He was instrumental in the Spanish accession to CERN approved by the Spanish Government at the end of 1982 and ratified by the Spanish Parliament in June 1983. He served at CERN (1987 – 2004) as Group Leader (1987 – 1990), Scientific Advisor to the Director-General (1990 – 2000) and as Division Leader of the Education and Technology T...

  13. Strait of Juan de Fuca 1 arc-second DEM

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 1-second Strait of Juan de Fuca Washington Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This...

  14. San Juan, Puerto Rico Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The San Juan, Puerto Rico Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model....

  15. Strait of Juan de Fuca 36 arc-second DEM

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 36-second Strait of Juan de Fuca Washington Elevation Grid provides bathymetric data in ASCII raster format of 36-second resolution in geographic coordinates....

  16. 78 FR 19103 - Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan, PR

    Science.gov (United States)

    2013-03-29

    ...-AA00 Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan... temporary moving safety zone on the waters of Bahia de San Juan during the transit of the Spanish Navy... Channel entrance, and to protect the high ranking officials on board the Spanish Navy School Ship San...

  17. Cuisine Preference of Local Tourists in San Juan, Batangas, Philippines

    OpenAIRE

    RYENE SELLINE B. KALALO; ANGELICA LYNTTE A. CABLAO; MARICRISS P. CABATAY; CHARISSA P. MANTAL; RHONALYN T. MANALO; SEVILLA S. FELICEN

    2014-01-01

    This study aimed to determine the cuisine preference of the local tourist in San Juan, Batangas. More specifically, it aimed to describe the demographic profile of local tourist; to identify the preferred cuisine by different restaurants; to determine the significant difference when group according to demographic profile; and to determine the cuisine preference of local tourists in San Juan, Batangas. The research design used the descriptive method because it is the most appropria...

  18. Las Silvas de Juan Lorenzo Palmireno

    Directory of Open Access Journals (Sweden)

    Lee, Lilith

    2006-12-01

    Full Text Available This paper examines the works titled Silva by Juan Lorenzo Palmireno. The analysis of these texts sheds light on Palmireno’s understanding of the word and its possible implications in the sixteenth century. The study identifies an interpretation of silva as a way of writing different from his predecessor, Pedro Mexía, who first used it to title his work Silva de varia lección twenty years ago. The lack of any intention to arrange its structure gives these silvas the characteristic of a literary draft, a feature derived from one of the meanings of silva inherited from the Classical Age. Moreover, Palmireno’s works reveal an encyclopedic project of which the miscellany (represented by silva forms a part. Furthermore, the silvas of Palmireno act as a transition to the later development of silva as a genre, which finds its educational objective being taken over gradually by the anxiety to provide entertainment.El artículo examina las obras tituladas Silva de Juan Lorenzo Palmireno. El análisis de estos textos deja constancia de cómo el humanista entiende la palabra y sus implicaciones en el siglo XVI. El estudio identifica una interpretación de silva como una manera de escribir distinta de su predecesor, Pedro Mexía, quien veinte años antes la utilizó para nombrar a su obra Silva de varia lección. La falta de la intención en ordenar los textos les otorga a las silvas palmirenianas la característica de un borrador literario, uno de los significados de la silva desde la Edad Clásica. Además, las obras del humanista aragonés muestra su proyecto enciclopédico del autor que integra la miscelánea (representada por la silva como una parte. Estas silvas también actúan como la transición para el desarrollo de la silva como género que encuentra su objetivo educacional sustituido gradualmente por la finalidad de ofrecer entretenimiento.

  19. JUAN SIN MIEDO VA A LA ESCUELA

    Directory of Open Access Journals (Sweden)

    Silvia Méndez-Anchía

    2009-01-01

    Full Text Available Tomando como base la lectura del cuento "Juan Sin Miedo" realizada por tres sujetos adolescentes, pretendo responder a la pregunta sobre los principales temores que enfrenta la población costarricense adolescente en la actualidad. Las respuestas giran en torno a tres núcleos significativos: el miedo a la exclusión económica y social, materializada en el trato discriminatorio hacia quienes no se adecuan a los criterios impuestos por la sociedad de consumo; el miedo a la escuela, en tanto excluye a quienes no se ajustan a la norma esperada de desempeño académico; y el miedo al otro, en particular a la calle y la escuela como espacios de violencia. Concluyo señalando que, detrás de dichos temores, es posible leer un anhelo de pertenencia; de aprecio sincero y gratuito, en que no medie el rendimiento académico de la persona; así como un anhelo de seguridad en el entorno cercano.

  20. Juan Bautista Perolli. Obras genovesas. II

    Directory of Open Access Journals (Sweden)

    López Torrijos, Rosa

    2002-06-01

    Full Text Available In this article the study of Perolli's work in Genoa is continued, demonstrating his varied artistic activities and his relationship with families under Spanish influence. His last work in Genoa (the Spinola Chapel in the church of San Francisco had to be completed by other artists because Perolli was engaged by Don Alvaro de Bazán to work in his Spanish palace of El Viso. In December 1574, Bazán paid Perolli's debts and shortly afterwards Juan Bautista left for Spain.

    Continúa el estudio de la obra de Perolli en Génova, mostrando su participación en trabajos de arquitectura, escultura y pintura para varias familias genovesas, todas ellas relacionadas con España. Se estudia también su última obra realizada en Génova, la capilla Spinola de la iglesia de San Francisco, desaparecida y totalmente desconocida hasta ahora. Este último trabajo queda interrumpido en diciembre de 1574 cuando don Álvaro de Bazán paga las deudas de Perolli para que éste venga a España a trabajar en el palacio del Viso.

  1. JUAN LUIS SEGUNDO (1925-1976

    Directory of Open Access Journals (Sweden)

    Eduardo Hoornaert

    1996-01-01

    Full Text Available Juan Luís Segundo era um teólogo que sabia o que queria. Enquanto a maioria de seus colegas ensinava em seminários ou institutos de teologia, assessorava bispos ou encontros de clero, trabalhava com os assim chamados agentes de pastoral, engajava se nas "pastorais especiais", escrevia para revistas de divulgação pastoral, - sempre apoiados na plataforma da instituição grande -, ele ficou organizando seus seminários com leigos não-tão-pobres em Montevidéu, longe do mundo hierárquico, com uma metodologia que ele mesmo descreveu nas palavras introdutórias de sua "Teologia aberta para o leigo adulto" (1976/1, 10-12: seminários em fim-de-semana, com duração de dois ou três dias, divididos em blocos de quatro horas de concentração na seguinte seqüência, aliás bem conhecida: uma conferência inicial de quarenta minutos, grupos de reflexão por uma hora, mesa redonda, reflexão final pelo assessor, e depois oração.

  2. New record of Boa constrictor occidentalis Philippi, 1873 (Serpentes: Boidae) in San Juan province, Argentina

    OpenAIRE

    Martínez, Tomás; Rodriguez Muñoz, Melina; Galdeano, Ana; Acosta, Juan

    2015-01-01

    We document the first record of Boa constrictor in Valle Fértil department, San Juan province, Argentina. The specimen was collected and deposited in the herpetological collection of the Department of Biology, Universidad Nacional San Juan. This record extends the known distribution for this species in San Juan province by 105 km.

  3. Turkish Image in The Works of Juan Goytisolo

    OpenAIRE

    SARI SEO LECOQ, Kübra

    2016-01-01

    Inthis article we aim to analize how is perceived Turkey and Turkish people bythe West during the historical process in the non-fictional writings of JuanGoytisolo, who is one of the contemporary writers of Spain. The interest of JuanGoytisolo for Turkish and Islamic World is well-known. However, this positiveattention has never been an obstacle for a realistic approach. The books ofGoytisolo that we incorporated by reference when we were preparing this articleare ‘Estambul Otomano’, ‘Cronica...

  4. LOD First Estimates In 7406 SLR San Juan Argentina Station

    Science.gov (United States)

    Pacheco, A.; Podestá, R.; Yin, Z.; Adarvez, S.; Liu, W.; Zhao, L.; Alvis Rojas, H.; Actis, E.; Quinteros, J.; Alacoria, J.

    2015-10-01

    In this paper we show results derived from satellite observations at the San Juan SLR station of Felix Aguilar Astronomical Observatory (OAFA). The Satellite Laser Ranging (SLR) telescope was installed in early 2006, in accordance with an international cooperation agreement between the San Juan National University (UNSJ) and the Chinese Academy of Sciences (CAS). The SLR has been in successful operation since 2011 using NAOC SLR software for the data processing. This program was designed to calculate satellite orbits and station coordinates, however it was used in this work for the determination of LOD (Length Of Day) time series and Earth Rotation speed.

  5. Soledades marxistas. Teoría, Literatura e Historia en Juan Carlos Rodríguez

    Directory of Open Access Journals (Sweden)

    Miguel Ángel García

    2016-09-01

    Full Text Available El precio por arriesgar a cada línea, a cada nuevo libro, a cada golpe de pensa- miento distinto, es sin embargo la soledad teórica. Hablo de soledad en el duro campo de la teoría, con independencia de la compañía más o menos numerosa que, con posterioridad, pueda arrastrar un pensamiento distinto como el del maestro. Pero esto ya serían los efectos de ese pensamiento, su continuación o su prolongación en quienes lo leen y no pueden sino quedarse pensativos, no el acto mismo en que el pensamiento es pensado y se arriesga al pensarlo y al escribirlo, y mucho más al publicarlo. Me refiero entonces a ese tipo de soledad advertida por Althusser en el Maquiavelo que teoriza las condiciones políticas de la constitución del Estado nacional, el Maquiavelo que defiende escandalo- samente, contra todas las verdades establecidas en su tiempo, que la lucha de clases es de todo punto indispensable para el reforzamiento y engrandecimiento de ese Estado. Naturalmente, Althusser glosa al Maquiavelo que habla de la soledad del Príncipe: hay que estar solo para fundar un Estado. Esta soledad es aislamiento, pero por ella pasa la libertad: hay que estar solo para ser libre a la hora de cumplir con la tarea histórica de la constitución del Estado. Es decir, y como sigue glosando Althusser (1977: 317, que había que encontrarse, por fortuna y virtud, arrancado radicalmente y sin retorno de las formas políticas de la Italia de entonces, porque todas eran viejas, marcadas por el feudalismo y nada se podía esperar de ellas. El Príncipe solo podía ser nuevo si estaba dotado de esta soledad, de esta libertad para fundar el Estado moderno.

  6. Subjectivity Policies for Educational Equality Opportunities. A Conversation Between Juan Carlos Tedesco and Luis Porter

    Directory of Open Access Journals (Sweden)

    Luis Porter Galetar

    2006-05-01

    Full Text Available This article seeks to answer a basic question: Is it possible to include the excluded? We understand the excluded as new social sectors, which are different from those we describe as marginal or exploited.  Rather, these sectors are formed by the large and growing groups of people that contemporary society seems able to ignore. The article starts by analyzing what this new social condition implies to decision makers, and raises new questions.  Do we want to live in a society that excludes 25 or 30% of its more needy population?  Are we capable of learning to live together, as Jacques Delors asks in his UNESCO report?  The ethical dilemma implied by these questions leads to a reflection on the technical-political dimension of inequality in regards to education.  Tedesco and Porter open a dialogue that departs from a macro vision (including the use of new technology and the opening of new fields in educational policies and goes into the micro dimension of specific contexts, from those where people have some educational autonomy and project capacity, to those where people find themselves in situations of anonymity and social dissolution.  Learning to live together implies taking on responsibility for the other, and of knowing the other. In order to break with the social determinism that can lead to fatalist scenarios, it is important to understand that educational success or failure is a systemic phenomenon that depends on a multiple of variables.  Governments have responded to the complexity of the problem with ‘objective’ measures that principally affect the material. In this article we support the idea that an attempt to bring about a greater recognition of the subjective dimension is missing in current educational policy.  To achieve this we identify certain characteristics that various studies have shown as basic requirements to confront the problem: project capacity, narrative capacity and enhanced self-confidence.

  7. San Juan College Task Force on Innovation 1995 Report.

    Science.gov (United States)

    Moore, Nelle

    In fall 1994, San Juan College, in New Mexico, established the Task Force on Innovation to examine changes in the paradigm of education and how those changes might affect the college. The Task Force determined that the primary driver of change in education was technology, and specifically the increasing number of means and ease of access to…

  8. The Logic and Semantics of Modal Propositions in Juan Caramuel

    Czech Academy of Sciences Publication Activity Database

    Dvořák, Petr

    19/43/, - (2005), s. 105-115. ISBN 80-7007-236-9. ISSN 0231-5955 Institutional research plan: CEZ:AV0Z90090514 Keywords : Juan Caramuel y Lobkowicz * modal logic * modalities * late scholasticism Subject RIV: AA - Philosophy ; Religion

  9. Ladrillo and Tales of Juan Bobo: Puerto Rican Folk Tales.

    Science.gov (United States)

    Matos, Reinaldo; Matos, Ana

    These two illustrated elementary readers contain the Spanish and English versions of the Puerto Rican folk tales, "Ladrillo" and "Cuentos de Juan Bobo." They are part of a series of reading materials for elementary-level migrant children. These materials are intended to help the child relate to his culture, develop interest in…

  10. El silencio como estrategia en la obra de Juan Rulfo

    OpenAIRE

    Gómez López-Quiñones, Loreto

    2013-01-01

    Juan Rulfo utiliza el silencio como un espacio para oír y decir mejor en el contexto del México postrevolucionario. Inspirándonos en la terminología de Spivak, pretendemos mostrar el silencio de Rulfo como una estrategia de resistencia ante la representación occidental del Otro.

  11. The green areas of San Juan, Puerto Rico

    Science.gov (United States)

    O.M. Ramos-Gonzalez

    2014-01-01

    Green areas, also known as green infrastructure or urban vegetation, are vital to urbanites for their critical roles in mitigating urban heat island effects and climate change and for their provision of multiple ecosystem services and aesthetics. Here, I provide a high spatial resolution snapshot of the green cover distribution of the city of San Juan, Puerto Rico, by...

  12. [Psychiatric Hospital San Juan de Dios. One hundred years later].

    Science.gov (United States)

    Cocula-León, Horacio

    2014-01-01

    Mental health and psychiatric diseases have always attracted people's and health authorities' attention due to its magical approach, the lack of knowledge that surrounds them, and, at the same time, the religious fear they provoke. Both have played an important role in the history of humanity, of public health politics, and of physicians. The places where psychiatric patients were treated are of historical interest, because through the historical knowledge we can identify an approach from the science and the health policies that prevailed in each age. At the beginning of the 20th century, it was developed in México a new model of hospital care attention to psychiatric patients. La Casa de Salud San Juan de Dios para Pacientes Alienados is an example; the concept "alienated patients" suggests a social and cultural perspective. This paper presents a chronological type description of one of the major institutions involved in mental health care in México. Similarly, it shows a review of the events that affected the religious order San Juan de Dios from 1901 to 2012, when the hospitaller order was reinstated in México and established the Casa de Salud San Juan de Dios para Pacientes Alienados in the town of Zapopan, Jalisco, institution that exists up to the present day and keeps participating in the mental health care in the state of Jalisco, with the current name of Servicios de Salud San Juan de Dios.

  13. The green areas of San Juan, Puerto Rico

    Directory of Open Access Journals (Sweden)

    Olga M. Ramos-González

    2014-09-01

    Full Text Available Green areas, also known as green infrastructure or urban vegetation, are vital to urbanites for their critical roles in mitigating urban heat island effects and climate change and for their provision of multiple ecosystem services and aesthetics. Here, I provide a high spatial resolution snapshot of the green cover distribution of the city of San Juan, Puerto Rico, by incorporating the use of morphological spatial pattern analysis (MSPA as a tool to describe the spatial pattern and connectivity of the city's urban green areas. Analysis of a previously developed IKONOS 4-m spatial resolution classification of the city of San Juan from 2002 revealed a larger area of vegetation (green areas or green infrastructure than previously estimated by moderate spatial resolution imagery. The city as a whole had approximately 42% green cover and 55% impervious surfaces. Although the city appeared greener in its southern upland sector compared to the northern coastal section, where most built-up urban areas occurred (66% impervious surfaces, northern San Juan had 677 ha more green area cover dispersed across the city than the southern component. MSPA revealed that most forest cover occurred as edges and cores, and green areas were most commonly forest cores, with larger predominance in the southern sector of the municipality. In dense, built-up, urban land, most of the green areas occurred in private yards as islets. When compared to other cities across the United States, San Juan was most similar in green cover features to Boston, Massachusetts, and Miami, Florida. Per capita green space for San Juan (122.2 m²/inhabitant was also comparable to these two U.S. cities. This study explores the intra-urban vegetation variation in the city of San Juan, which is generally overlooked by moderate spatial resolution classifications in Puerto Rico. It serves as a starting point for green infrastructure mapping and landscape pattern analysis of the urban green spaces

  14. O narrador solidário de Juan Coytisolo

    Directory of Open Access Journals (Sweden)

    Annete de Almeida Faria

    2011-11-01

    Full Text Available Resumo: Este artigo se propõe a analisar a construção do narrador de Cuaderno de Sarajevo: anotaciones de un viaje a la barbarie (1993, do escritor espanhol Juan Goytisolo, como expressão estética do seu compromisso ético. Tomamos como referência O narrador de Walter Benjamin para entender o narrador goytisolano como aquele que através das viagens busca o “outro”, elabora um arquivo memorial polifônico, misturando diferentes tipos de linguagem para dar voz às minorias.Palavras-chave: Literatura espanhola; Juan Goytisolo; Cuaderno de Sarajevo: anotaciones de un viaje a la barbarie; Walter Benjamin; O narrador; polifonia.Resumen: El propósito de este artículo consiste en analizar la construcción del narrador de Cuaderno de Sarajevo: anotaciones de un viaje a la barbarie (1993, del escritor español Juan Goytisolo, como expresión estética de su compromisso ético. Tomamos como base el ensayo El narrador, de Walter Benjamin, para comprender al narrador goytisolano como el que viaja en busca del “oro” (otredad para componer un archivo memorial polifónico, mezclando diferentes tipos de lenguaje para dar voz a las minorías.Palabras-clave: Literatura española; Juan Goytisolo; Cuaderno de Sarajevo: anotaciones de un viaje a la barbarie; Walter Benjamin; El narrador; polifonía.Keywords: Spanish literature; Juan Goytisolo; Cuaderno de Sarajevo: anotaciones de un viaje a la barbarie; Walter Benjamin; El narrador; poliphony.

  15. Exploring Monte Carlo methods

    CERN Document Server

    Dunn, William L

    2012-01-01

    Exploring Monte Carlo Methods is a basic text that describes the numerical methods that have come to be known as "Monte Carlo." The book treats the subject generically through the first eight chapters and, thus, should be of use to anyone who wants to learn to use Monte Carlo. The next two chapters focus on applications in nuclear engineering, which are illustrative of uses in other fields. Five appendices are included, which provide useful information on probability distributions, general-purpose Monte Carlo codes for radiation transport, and other matters. The famous "Buffon's needle proble

  16. Monte Carlo methods

    Directory of Open Access Journals (Sweden)

    Bardenet Rémi

    2013-07-01

    Full Text Available Bayesian inference often requires integrating some function with respect to a posterior distribution. Monte Carlo methods are sampling algorithms that allow to compute these integrals numerically when they are not analytically tractable. We review here the basic principles and the most common Monte Carlo algorithms, among which rejection sampling, importance sampling and Monte Carlo Markov chain (MCMC methods. We give intuition on the theoretical justification of the algorithms as well as practical advice, trying to relate both. We discuss the application of Monte Carlo in experimental physics, and point to landmarks in the literature for the curious reader.

  17. Monte Carlo: Basics

    OpenAIRE

    Murthy, K. P. N.

    2001-01-01

    An introduction to the basics of Monte Carlo is given. The topics covered include, sample space, events, probabilities, random variables, mean, variance, covariance, characteristic function, chebyshev inequality, law of large numbers, central limit theorem (stable distribution, Levy distribution), random numbers (generation and testing), random sampling techniques (inversion, rejection, sampling from a Gaussian, Metropolis sampling), analogue Monte Carlo and Importance sampling (exponential b...

  18. Hydrologic assessment and numerical simulation of groundwater flow, San Juan Mine, San Juan County, New Mexico, 2010–13

    Science.gov (United States)

    Stewart, Anne M.

    2018-04-03

    Coal combustion byproducts (CCBs), which are composed of fly ash, bottom ash, and flue gas desulfurization material, produced at the coal-fired San Juan Generating Station (SJGS), located in San Juan County, New Mexico, have been buried in former surface-mine pits at the San Juan Mine, also referred to as the San Juan Coal Mine, since operations began in the early 1970s. This report, prepared by the U.S. Geological Survey in cooperation with the Mining and Minerals Division of the New Mexico Energy, Minerals and Natural Resources Department, describes results of a hydrogeologic assessment, including numerical groundwater modeling, to identify the timing of groundwater recovery and potential pathways for groundwater transport of metals that may be leached from stored CCBs and reach hydrologic receptors after operations cease. Data collected for the hydrologic assessment indicate that groundwater in at least one centrally located reclaimed surface-mining pit has already begun to recover.The U.S. Geological Survey numerical modeling package MODFLOW–NWT was used with MODPATH particle-tracking software to identify advective flow paths from CCB storage areas toward potential hydrologic receptors. Results indicate that groundwater at CCB storage areas will recover to the former steady state, or in some locations, groundwater may recover to a new steady state in 6,600 to 10,600 years at variable rates depending on the proximity to a residual cone-of-groundwater depression caused by mine dewatering and regional oil and gas pumping as well as on actual, rather than estimated, groundwater recharge and evapotranspirational losses. Advective particle-track modeling indicates that the number of particles and rates of advective transport will vary depending on hydraulic properties of the mine spoil, particularly hydraulic conductivity and porosity. Modeling results from the most conservative scenario indicate that particles can migrate from CCB repositories to either the

  19. Radiation accident Hospital San Juan de Dios August - September 1996

    International Nuclear Information System (INIS)

    Chin Cheng, R.

    2000-01-01

    In Costa Rica, a radiation accident occurred in 1996. It took place at the Radiotherapy Service of the San Juan de Dios Hospital, which affected 115 patients. The Unit of Radiotherapy made a mistake in the calibration of the new bundle because of the change of external faeces of cobalt 60 (Alycon II). The work is a retrospective study that describes what happened in this accident, and the medical consequences that derived from it [es

  20. MORSE Monte Carlo code

    International Nuclear Information System (INIS)

    Cramer, S.N.

    1984-01-01

    The MORSE code is a large general-use multigroup Monte Carlo code system. Although no claims can be made regarding its superiority in either theoretical details or Monte Carlo techniques, MORSE has been, since its inception at ORNL in the late 1960s, the most widely used Monte Carlo radiation transport code. The principal reason for this popularity is that MORSE is relatively easy to use, independent of any installation or distribution center, and it can be easily customized to fit almost any specific need. Features of the MORSE code are described

  1. La encrucijada en Pedro Páramo de Juan Rulfo / The Crossroads in Pedro Páramo by Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Lilia Leticia García-Peña

    2015-08-01

    Full Text Available La obra de Juan Rulfo sintetiza la realidad del campo mexicano, captura el contorno de las identidades individuales y de la estructura de la interacción social del mundo que tanto le preocupó y del que es intérprete indiscutible, pero también supo convertir en materia narrativa aquellas atmósferas que rebasan el contexto mexicano y social. En este trabajo abordaré el tema de la encrucijada en el imaginario simbólico de Pedro Páramo (1955 como expresión de una reelaboración del mito de Hermes, analizaré cómo la novela de Juan Rulfo muestra estos ecos herméticos y qué sentido estético y sociocultural tiene esta resonancia mítica.

  2. Juan García y Juan Montaño: territorios distintos y narrativas complementarias desde la memoria afrodescendiente

    Directory of Open Access Journals (Sweden)

    Gustavo Abad Ordóñez

    2012-11-01

    Full Text Available Este ensayo pone en diálogo el pensamiento y la obra de dos referentes de la cultura afrodescendiente en el Ecuador: Juan García y Juan Montaño. Desde una perspectiva histórico-literaria, analiza las maneras cómo un investigador de la cultura –García- y un escritor –Montaño- ponen en escena el tema de la memoria. El primero va en busca de la tradición oral como portadora de los valores ancestrales capaces de sostener un proceso de resistencia cultural. El segundo, en cambio, inventa otra poética y construye nuevos sentidos acerca de la condición afro en el escenario urbano. Temas como la oralidad, la música, la comunidad, la ciudad, la noche, el amor adquieren significados particulares desde la mirada de dos intelectuales que se expresan desde una profunda conciencia afrodescendiente.

  3. Hydrologic data from wells at or in the vicinity of the San Juan coal mine, San Juan County, New Mexico

    Science.gov (United States)

    Stewart, Anne M.; Thomas, Nicole

    2015-01-01

    In 2010, in cooperation with the Mining and Minerals Division (MMD) of the State of New Mexico Energy, Minerals and Natural Resources Department, the U.S. Geological Survey (USGS) initiated a 4-year assessment of hydrologic conditions at the San Juan coal mine (SJCM), located about 14 miles west-northwest of the city of Farmington, San Juan County, New Mexico. The mine produces coal for power generation at the adjacent San Juan Generating Station (SJGS) and stores coal-combustion byproducts from the SJGS in mined-out surface-mining pits. The purpose of the hydrologic assessment is to identify groundwater flow paths away from SJCM coal-combustion-byproduct storage sites that might allow metals that may be leached from coal-combustion byproducts to eventually reach wells or streams after regional dewatering ceases and groundwater recovers to predevelopment levels. The hydrologic assessment, undertaken between 2010 and 2013, included compilation of existing data. The purpose of this report is to present data that were acquired and compiled by the USGS for the SJCM hydrologic assessment.

  4. Variational Monte Carlo Technique

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 8. Variational Monte Carlo Technique: Ground State Energies of Quantum Mechanical Systems. Sukanta Deb. General Article Volume 19 Issue 8 August 2014 pp 713-739 ...

  5. La construcción de un mito : fortuna crítica de Juan de Juanes en los siglos XVI y XVII

    Directory of Open Access Journals (Sweden)

    Miguel Falomir Faus

    1999-01-01

    Full Text Available Este artículo pretende analizar los inicios de la fortuna crítica de Juan de Juanes en los siglos XVI y XVII. La «leyenda» de Juanes se asentó en su triple condición de gloria local, pintor ejemplar y artista piadoso, y quienes la forjaron, de Escolano a Vicente Vitoria pasando por Pacheco o Jusepe Martínez, no dudaron en potenciar, e incluso distorsionar, aquellas facetas de la personalidad de Juanes afines a sus intereses particulares.This article seeks to analyze the origins of the historiographical treatment of Juan de Juanes in the sixteenth and seventeenth centuries. The «myth» of Juanes was posited on three aspects: as exemplary and illustrious citizen, model forpainters, and pious artist. Those who forged this image of the artist, from Escolano to Vicente Vitoria and passing by Pacheco or Jusepe Martínez, did not doubt in emphasizing and even distorting those aspects of his personality and life that affirmed their individual interests.

  6. Monte Carlo codes and Monte Carlo simulator program

    International Nuclear Information System (INIS)

    Higuchi, Kenji; Asai, Kiyoshi; Suganuma, Masayuki.

    1990-03-01

    Four typical Monte Carlo codes KENO-IV, MORSE, MCNP and VIM have been vectorized on VP-100 at Computing Center, JAERI. The problems in vector processing of Monte Carlo codes on vector processors have become clear through the work. As the result, it is recognized that these are difficulties to obtain good performance in vector processing of Monte Carlo codes. A Monte Carlo computing machine, which processes the Monte Carlo codes with high performances is being developed at our Computing Center since 1987. The concept of Monte Carlo computing machine and its performance have been investigated and estimated by using a software simulator. In this report the problems in vectorization of Monte Carlo codes, Monte Carlo pipelines proposed to mitigate these difficulties and the results of the performance estimation of the Monte Carlo computing machine by the simulator are described. (author)

  7. Characterizing the Organic Matter in Surface Sediments from the San Juan Bay Estuary,

    Science.gov (United States)

    The San Juan Bay Estuary (SJBE) is located on the north coast of Puerto Rico and includes the San Juan Bay, San José Lagoon, La Torrecilla Lagoon and Piñones Lagoon, as well as the Martín Peña and the Suárez Canals. The SJBE watershed has the highest...

  8. 33 CFR 165.758 - Security Zone; San Juan, Puerto Rico.

    Science.gov (United States)

    2010-07-01

    ... Security Zone; San Juan, Puerto Rico. (a) Location. Moving and fixed security zones are established 50... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; San Juan, Puerto Rico. 165.758 Section 165.758 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...

  9. 33 CFR 110.74c - Bahia de San Juan, PR.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Bahia de San Juan, PR. 110.74c Section 110.74c Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Special Anchorage Areas § 110.74c Bahia de San Juan, PR. The waters of San Antonio...

  10. 77 FR 61632 - Final Environmental Impact Statement for Cattle Point Road Relocation, San Juan Island National...

    Science.gov (United States)

    2012-10-10

    ... Juan County, Washington AGENCY: National Park Service, Interior. ACTION: Notice of Availability of the... Service (NPS) and the Federal Highway Administration (FHWA), in cooperation with San Juan County... through the park for use by residents and visitors traveling to the east end of the Cattle Point peninsula...

  11. Vectorized Monte Carlo

    International Nuclear Information System (INIS)

    Brown, F.B.

    1981-01-01

    Examination of the global algorithms and local kernels of conventional general-purpose Monte Carlo codes shows that multigroup Monte Carlo methods have sufficient structure to permit efficient vectorization. A structured multigroup Monte Carlo algorithm for vector computers is developed in which many particle events are treated at once on a cell-by-cell basis. Vectorization of kernels for tracking and variance reduction is described, and a new method for discrete sampling is developed to facilitate the vectorization of collision analysis. To demonstrate the potential of the new method, a vectorized Monte Carlo code for multigroup radiation transport analysis was developed. This code incorporates many features of conventional general-purpose production codes, including general geometry, splitting and Russian roulette, survival biasing, variance estimation via batching, a number of cutoffs, and generalized tallies of collision, tracklength, and surface crossing estimators with response functions. Predictions of vectorized performance characteristics for the CYBER-205 were made using emulated coding and a dynamic model of vector instruction timing. Computation rates were examined for a variety of test problems to determine sensitivities to batch size and vector lengths. Significant speedups are predicted for even a few hundred particles per batch, and asymptotic speedups by about 40 over equivalent Amdahl 470V/8 scalar codes arepredicted for a few thousand particles per batch. The principal conclusion is that vectorization of a general-purpose multigroup Monte Carlo code is well worth the significant effort required for stylized coding and major algorithmic changes

  12. CERN honours Carlo Rubbia

    CERN Document Server

    2009-01-01

    Carlo Rubbia turned 75 on March 31, and CERN held a symposium to mark his birthday and pay tribute to his impressive contribution to both CERN and science. Carlo Rubbia, 4th from right, together with the speakers at the symposium.On 7 April CERN hosted a celebration marking Carlo Rubbia’s 75th birthday and 25 years since he was awarded the Nobel Prize for Physics. "Today we will celebrate 100 years of Carlo Rubbia" joked CERN’s Director-General, Rolf Heuer in his opening speech, "75 years of his age and 25 years of the Nobel Prize." Rubbia received the Nobel Prize along with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. During the symposium, which was held in the Main Auditorium, several eminent speakers gave lectures on areas of science to which Carlo Rubbia made decisive contributions. Among those who spoke were Michel Spiro, Director of the French National Insti...

  13. La lengua salvada: Acerca de dibaxu de Juan Gelman

    Directory of Open Access Journals (Sweden)

    Enrique Abel Foffani

    2000-11-01

    Full Text Available Se intenta leer el libro dibaxu de Juan Gelman escrito en sefardí desde el horizonte de la tradición poética latinoamericana. A través de la metáfora acerca de "la lengua salvada" de Elías Canetti (una imagen-aconteciªmiento de su propia autobiografía es posible reflexionar sobre la condición de judío y también sobre la relación de la lengua materna y la infancia. En la estela de Rubén Darío y de los poetas posteriores que se vieron en la situación de cambiar de lengua por diversos motivos, Juan Gelman elige el ladino o español sefardí como un doble extrañamiento de la lengua poética: por un lado pertenece a la línea azkenazí y no sefardita y por el otro recupera el español del siglo XV en consonancia con otras propuestas poéticas en las que había ya ensayado el rescate de la voz de poetas españoles como San Juan de la Cruz , Santa Teresa y los poetas místicos árabes. Desde esta perspectiva, el artículo analiza desde la extraterritorialización de la lengua poética los temas de dibaxu y otros libros anteriores a fin de señalar ciertas constantes y sus modos diferentes de articulación en el texto poético.

  14. La lengua salvada: Acerca de dibaxu de Juan Gelman

    Directory of Open Access Journals (Sweden)

    Enrique Abel Foffani

    2001-11-01

    Full Text Available Se intenta leer el libro dibaxu de Juan Gelman escrito en sefardí desde el horizonte de la tradición poética latinoamericana. A través de la metáfora acerca de "la lengua salvada" de Elías Canetti (una imagen-aconteciªmiento de su propia autobiografía es posible reflexionar sobre la condición de judío y también sobre la relación de la lengua materna y la infancia. En la estela de Rubén Darío y de los poetas posteriores que se vieron en la situación de cambiar de lengua por diversos motivos, Juan Gelman elige el ladino o español sefardí como un doble extrañamiento de la lengua poética: por un lado pertenece a la línea azkenazí y no sefardita y por el otro recupera el español del siglo XV en consonancia con otras propuestas poéticas en las que había ya ensayado el rescate de la voz de poetas españoles como San Juan de la Cruz , Santa Teresa y los poetas místicos árabes. Desde esta perspectiva, el artículo analiza desde la extraterritorialización de la lengua poética los temas de dibaxu y otros libros anteriores a fin de señalar ciertas constantes y sus modos diferentes de articulación en el texto poético.

  15. 76 FR 4371 - Notice of Intent to Prepare an Environmental Impact Statement for the Proposed San Juan Basin...

    Science.gov (United States)

    2011-01-25

    ...; NMNM122352] Notice of Intent to Prepare an Environmental Impact Statement for the Proposed San Juan Basin Energy Connect Project, San Juan County, New Mexico, and La Plata County, Colorado AGENCY: Bureau of Land... prepare an Environmental Impact Statement (EIS) on the proposed San Juan Energy Connect Project, and by...

  16. Juan Rodríguez Freile (cronista colonial

    Directory of Open Access Journals (Sweden)

    Julio Enrique Cuervo Escobar

    1963-06-01

    Full Text Available Juan Rodríguez Freile -1566-1638-. Aspirante al sacerdocio, soldado en los albores de la Conquista y más tarde hombre pacífico, que cambió las armas por instrumentos de labranza y en la vejez por la pluma, escribiendo sobre la "Conquista y Descubrimiento del Nuevo Reino. de Granada . .. " (El título completo equivale al índice 1, crónica santafereña que ha pasado a la posteridad con el título familiar de '·'EI Carnero".

  17. Animales en la obra de Juan José Arreola

    OpenAIRE

    Samperio, Guillermo

    2004-01-01

    Los bestiarios medievales son una tentativa, aunque sea parcial, por explicar la creación. En la letras latinoamericanas, Jorge Luis Borges, Julio Cortázar y Juan José Arreola renuevan los bestiarios de la edad Media. En este artículo se analizará la obra de Arreola, pues en ella, la imagen del animal trasciende de la forma simbólica del bestiario medieval y toma la forma nominalista del signo para la formulación de metáforas que transforman, no sólo a los hombres, sino también a los objetos,...

  18. Rabia canina en san Juan de Lurigancho y en Jicamarca

    OpenAIRE

    Días, Albina; Condori, René Edgar

    2004-01-01

    Hasta la tercera semana de noviembre se han confirmado cuatro casos de rabia canina en la DISA Lima Norte, el último caso se presentó el 20 de noviembre en la granja porcina «Pradera del Paraíso» en el distrito de San Juan de Lurigancho (SJL), perteneciente a la referida Dirección de Salud. Dicho caso sucedió en momentos que un trabajador de la granja trató de separar la pelea entre los perros guardianes de la granja y un perro de origen desconocido, siendo finalmente mordido en una de...

  19. Juan Goytisolo y la “primavera árabe”

    Directory of Open Access Journals (Sweden)

    Marco Kunz

    2015-01-01

     Juan Goytisolo observed with enthusiasm, though with certain concern, the news about the revolutions that, since early 2011, overthrew several autocratical regimes (in Tunisia, Egypt and Libya, entailed reforms in other countries (Morocco and caused a yet unfinished civil war (Syria. He gave his opinions on this historical process in repor­tages, essays and, mainly, articles published in El País. Based on these texts, I intend to compare his current comments with ideas he expressed in the late 20th century and to analize argumentation figures that are characteristic of Goytisolo’s vision of the recent history of North Africa.

  20. Paralelismos y divergencias entre Juan Tenorio de Tirso de Molina y Miguel Páramo, personaje de Juan Rulfo.

    Directory of Open Access Journals (Sweden)

    Herlinda Ramírez-Barradas.

    2009-01-01

    Full Text Available Resumen: En este breve artículo se presentan algunas características de Miguel Páramo que, primero, permiten incluirlo en la larga lista de personajes donjuanescos derivados de la obra de Tirso de Molina y que, además, hacen posible entender su función trágica.Summary: This article presents some of Miguel Páramo's characteristics that, first, allow including him in the long list of prominent Don Juan figures derived from Tirso de Molina's work and, in addition, make it possible to understand his tragic function.

  1. Aprendizajes del Accidente de San Juan Ixhuatepec-México Learning from the Accident in San Juan Ixhuatepec-Mexico

    OpenAIRE

    Antioco López-Molina; Richart Vázquez-Román; Christian Díaz-Ovalle

    2012-01-01

    El índice Dow de fuego y explosión y la metodología del análisis cuantitativo del riesgo son aplicados para analizar uno de los accidentes más desafortunados en la historia mexicana: la explosión de tanques de almacenamiento de gas en la planta de San Juan Ixhuatepec en México. Estimaciones adicionales de la sobrepresión y radiación térmica producida durante el siniestro son llevadas a cabo para explicar el efecto dominó producido como consecuencia del incidente. Estas estimaciones dan eviden...

  2. Cuisine Preference of Local Tourists in San Juan, Batangas, Philippines

    Directory of Open Access Journals (Sweden)

    RYENE SELLINE B. KALALO

    2014-08-01

    Full Text Available This study aimed to determine the cuisine preference of the local tourist in San Juan, Batangas. More specifically, it aimed to describe the demographic profile of local tourist; to identify the preferred cuisine by different restaurants; to determine the significant difference when group according to demographic profile; and to determine the cuisine preference of local tourists in San Juan, Batangas. The research design used the descriptive method because it is the most appropriate method. It was found that the over-all assessment was frequent. Hamburger received the highest weighted mean followed by Sandwiches interpreted as frequent. Doughnut and Roasted Turkey got the lowest. Chinese Cuisine is frequently served. Lumpiang Shanghai has the highest weighted mean that is frequently offered and Siomai being the second highest. Siopao and Dumpling got the lowest weighted mean that makes it sometimes offered in every restaurant. Japanese cuisine has an over-all assessment of frequent. Tempura has the highest weighted mean followed by Teriyaki. Ramen has the second to the lowest weighted mean and Tonkatsu got the lowest. French Cuisine has a composite mean with an over-all assessment of sometimes. Mediterranean salad has the highest weighted followed by French Macaroons. Lamb and Ratatouille has the lowest weighted mean

  3. Juan O’Gorman. Formas de no ser arquitecto

    Directory of Open Access Journals (Sweden)

    Javier Jerez González

    2015-12-01

    Full Text Available La obra proyectada y construida por Juan O’Gorman a lo largo de su vida traza un recorrido largo y sincopado entre formas de entender la arquitectura totalmente antagónicas. Su primera etapa de radical racionalismo desarrolla, según procedimientos estrictamente técnicos, un lenguaje revolucionario basado en la austeridad y la precisión. A pesar de ello muchas de sus obras destacan por la plasticidad de sus composiciones volumétricas, la riqueza espacial o, incluso, por la creación de atmósferas oníricas. Los primeros años de frenética actividad dan paso a un periodo de voluntario alejamiento de la práctica profesional de la arquitectura: ni una sola obra, ni un solo proyecto durante cerca de 15 años. Tan solo su actividad docente le mantiene en contacto con el mundo de la arquitectura. Cuando Juan O’Gorman vuelve a ejercer como arquitecto, lo hace construyendo algunos de los iconos del movimiento de integración plástica de México: la biblioteca central de la UNAM y su casa en San Jerónimo. A pesar de las enormes diferencias, o más bien oposiciones, entre unos momentos y otros, puede identificarse una invariante clara como señal de identidad personal: una velada voluntad de no ser arquitecto

  4. Carlo Caso (1940 - 2007)

    CERN Multimedia

    Leonardo Rossi

    Carlo Caso (1940 - 2007) Our friend and colleague Carlo Caso passed away on July 7th, after several months of courageous fight against cancer. Carlo spent most of his scientific career at CERN, taking an active part in the experimental programme of the laboratory. His long and fruitful involvement in particle physics started in the sixties, in the Genoa group led by G. Tomasini. He then made several experiments using the CERN liquid hydrogen bubble chambers -first the 2000HBC and later BEBC- to study various facets of the production and decay of meson and baryon resonances. He later made his own group and joined the NA27 Collaboration to exploit the EHS Spectrometer with a rapid cycling bubble chamber as vertex detector. Amongst their many achievements, they were the first to measure, with excellent precision, the lifetime of the charmed D mesons. At the start of the LEP era, Carlo and his group moved to the DELPHI experiment, participating in the construction and running of the HPC electromagnetic c...

  5. Variational Monte Carlo Technique

    Indian Academy of Sciences (India)

    ias

    on the development of nuclear weapons in Los Alamos ..... cantly improved the paper. ... Carlo simulations of solids, Reviews of Modern Physics, Vol.73, pp.33– ... The computer algorithms are usually based on a random seed that starts the ...

  6. Markov Chain Monte Carlo

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 7; Issue 3. Markov Chain Monte Carlo - Examples. Arnab Chakraborty. General Article Volume 7 Issue 3 March 2002 pp 25-34. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/007/03/0025-0034. Keywords.

  7. Monte Carlo and Quasi-Monte Carlo Sampling

    CERN Document Server

    Lemieux, Christiane

    2009-01-01

    Presents essential tools for using quasi-Monte Carlo sampling in practice. This book focuses on issues related to Monte Carlo methods - uniform and non-uniform random number generation, variance reduction techniques. It covers several aspects of quasi-Monte Carlo methods.

  8. Bedrock aquifers of eastern San Juan County, Utah

    Science.gov (United States)

    Avery, Charles

    1986-01-01

    This study is one of a series of studies appraising the waterbearing properties of the Navajo Sandstone and associated formations in southern Utah.  The study area is about 4,600 square miles, extending from the Utah-Arizona State line northward to the San Juan-Grand County line and westward from the Utah-Colorado State line to the longitude of about 109°50'.Some of the water-yielding formations are grouped into aquifer systems. The C aquifer is comprised of the DeChelly Sandstone Member of the Cutler Formation.  The P aquifer is comprised of the Cedar Mesa Member of the Cutler Formation and the undifferentiated Cutler Formation. The N aquifer is comprised of the sedimentary section that includes the Wingate Sandstone, Kayenta Formation, Navajo Sandstone, Carmel Formation, and Entrada sandstone.  The M aquifer is comprised of the Bluff Sandstone Member and other sandstone units of the Morrison Formation.  The D aquifer is comprised of the Burro Canyon Formation and Dakota Sandstone.  Discharge from the ground-water reservoir to the San Juan River between gaging stations at Four Corners and Mexican Hat is about 66 cubic feet per second.The N aquifer is the main aquifer in the study area. Recharge by infiltration of precipitation is estimated to be 25,000 acre-feet per year.  A major ground-water divide exists under the broad area east of Monticello.  The thickness of the N aquifer, where the sedimentary section is fully preserved and saturated, generally is 750 to 1,250 feet.   Hydraulic conductivity values obtained from aquifer tests range from 0.02 to 0.34 foot per day.  The total volume of water in transient storage is about 11 million acre-feet. Well discharge somewhat exceeded 2,340 acre-feet during 1981.  Discharge to the San Juan River from the N aquifer is estimated to be 6.9 cubic feet per second. Water quality ranges from a calcium bicarbonate to sodium chloride type water

  9. Bayesian Monte Carlo method

    International Nuclear Information System (INIS)

    Rajabalinejad, M.

    2010-01-01

    To reduce cost of Monte Carlo (MC) simulations for time-consuming processes, Bayesian Monte Carlo (BMC) is introduced in this paper. The BMC method reduces number of realizations in MC according to the desired accuracy level. BMC also provides a possibility of considering more priors. In other words, different priors can be integrated into one model by using BMC to further reduce cost of simulations. This study suggests speeding up the simulation process by considering the logical dependence of neighboring points as prior information. This information is used in the BMC method to produce a predictive tool through the simulation process. The general methodology and algorithm of BMC method are presented in this paper. The BMC method is applied to the simplified break water model as well as the finite element model of 17th Street Canal in New Orleans, and the results are compared with the MC and Dynamic Bounds methods.

  10. Monte Carlo principles and applications

    Energy Technology Data Exchange (ETDEWEB)

    Raeside, D E [Oklahoma Univ., Oklahoma City (USA). Health Sciences Center

    1976-03-01

    The principles underlying the use of Monte Carlo methods are explained, for readers who may not be familiar with the approach. The generation of random numbers is discussed, and the connection between Monte Carlo methods and random numbers is indicated. Outlines of two well established Monte Carlo sampling techniques are given, together with examples illustrating their use. The general techniques for improving the efficiency of Monte Carlo calculations are considered. The literature relevant to the applications of Monte Carlo calculations in medical physics is reviewed.

  11. Contributon Monte Carlo

    International Nuclear Information System (INIS)

    Dubi, A.; Gerstl, S.A.W.

    1979-05-01

    The contributon Monte Carlo method is based on a new recipe to calculate target responses by means of volume integral of the contributon current in a region between the source and the detector. A comprehensive description of the method, its implementation in the general-purpose MCNP code, and results of the method for realistic nonhomogeneous, energy-dependent problems are presented. 23 figures, 10 tables

  12. Carlos Vesga Duarte

    Directory of Open Access Journals (Sweden)

    Pedro Medina Avendaño

    1981-01-01

    Full Text Available Carlos Vega Duarte tenía la sencillez de los seres elementales y puros. Su corazón era limpio como oro de aluvión. Su trato directo y coloquial ponía de relieve a un santandereano sin contaminaciones que amaba el fulgor de las armas y se encandilaba con el destello de las frases perfectas

  13. Fundamentals of Monte Carlo

    International Nuclear Information System (INIS)

    Wollaber, Allan Benton

    2016-01-01

    This is a powerpoint presentation which serves as lecture material for the Parallel Computing summer school. It goes over the fundamentals of the Monte Carlo calculation method. The material is presented according to the following outline: Introduction (background, a simple example: estimating @@), Why does this even work? (The Law of Large Numbers, The Central Limit Theorem), How to sample (inverse transform sampling, rejection), and An example from particle transport.

  14. Microcanonical Monte Carlo

    International Nuclear Information System (INIS)

    Creutz, M.

    1986-01-01

    The author discusses a recently developed algorithm for simulating statistical systems. The procedure interpolates between molecular dynamics methods and canonical Monte Carlo. The primary advantages are extremely fast simulations of discrete systems such as the Ising model and a relative insensitivity to random number quality. A variation of the algorithm gives rise to a deterministic dynamics for Ising spins. This model may be useful for high speed simulation of non-equilibrium phenomena

  15. Fundamentals of Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Wollaber, Allan Benton [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-06-16

    This is a powerpoint presentation which serves as lecture material for the Parallel Computing summer school. It goes over the fundamentals of the Monte Carlo calculation method. The material is presented according to the following outline: Introduction (background, a simple example: estimating π), Why does this even work? (The Law of Large Numbers, The Central Limit Theorem), How to sample (inverse transform sampling, rejection), and An example from particle transport.

  16. Norma y uso: las ideas educativas en Juan de Robles / Etymology and use: The educational ideas of Juan de Robles

    Directory of Open Access Journals (Sweden)

    Alejandro Gómez Camacho

    2014-10-01

    Full Text Available Resumen: Juan de Robles es uno de los más brillantes humanistas de nuestro Siglo de Oro, entre cuyas obras destaca El culto sevillano (1631. En este trabajo se analizan sus ideas educativas, centradas en la relación entre la ortografía y el aprendizaje de la escritura. Entre las ideas pedagógicas de Juan de Robles es muy relevante el rechazo vehemente de la ortografía fonética, entre otros motivos, porque no favorecía el aprendizaje de la lectura y de la escritura; en consecuencia, censura la creación de nuevas letras y de un nuevo orden para el alfabeto español. Los ortógrafos defensores de la ortografía fonética en el siglo XVII argumentaban que la nueva escritura permitiría a los niños aprender a leer y a escribir con más rapidez y facilidad; así como que la creación de nuevas letras y el establecimiento de un nuevo orden del alfabeto facilitarían su enseñanza. Frente a estas pretensiones, Juan de Robles defendió el alfabeto tradicional y la ortografía etimológica de origen latino porque eran los instrumentos adecuados para la alfabetización en nuestra lengua. También critica los colegios jesuitas y la Ratio Studiorum; las principales discrepancias entre la pedagogía de la Compañía de Jesús y las ideas educativas de Juan de Robles podrían concretarse en la primacía del español sobre el latín, y en el uso de cuentos y refranes populares para la educación en El culto sevillano. En conclusión, con la obra de Juan de Robles se incorpora definitivamente el argumento pedagógico que relaciona la ortografía y la gramática españolas con el aprendizaje de la lectura y de la escritura a la polémica sobre la ortografía española del Siglo de Oro, en defensa de la ortografía etimológica frente a las pretensiones de imponer una ortografía fonética en el primer tercio del siglo XVII. Abstract: Juan de Robles is considered one of the main humanists in the Spanish Golden Century. The most important of his works is

  17. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency and Professor at the IUSS School for Advanced Studies in Pavia will speak about his work with Carlo Rubbia. Finally, Hans Joachim Sch...

  18. CERN honours Carlo Rubbia

    CERN Multimedia

    2009-01-01

    On 7 April CERN will be holding a symposium to mark the 75th birthday of Carlo Rubbia, who shared the 1984 Nobel Prize for Physics with Simon van der Meer for contributions to the discovery of the W and Z bosons, carriers of the weak interaction. Following a presentation by Rolf Heuer, lectures will be given by eminent speakers on areas of science to which Carlo Rubbia has made decisive contributions. Michel Spiro, Director of the French National Institute of Nuclear and Particle Physics (IN2P3) of the CNRS, Lyn Evans, sLHC Project Leader, and Alan Astbury of the TRIUMF Laboratory will talk about the physics of the weak interaction and the discovery of the W and Z bosons. Former CERN Director-General Herwig Schopper will lecture on CERN’s accelerators from LEP to the LHC. Giovanni Bignami, former President of the Italian Space Agency, will speak about his work with Carlo Rubbia. Finally, Hans Joachim Schellnhuber of the Potsdam Institute for Climate Research and Sven Kul...

  19. Who Writes Carlos Bulosan?

    Directory of Open Access Journals (Sweden)

    Charlie Samuya Veric

    2001-12-01

    Full Text Available The importance of Carlos Bulosan in Filipino and Filipino-American radical history and literature is indisputable. His eminence spans the pacific, and he is known, diversely, as a radical poet, fictionist, novelist, and labor organizer. Author of the canonical America Iis the Hearts, Bulosan is celebrated for chronicling the conditions in America in his time, such as racism and unemployment. In the history of criticism on Bulosan's life and work, however, there is an undeclared general consensus that views Bulosan and his work as coherent permanent texts of radicalism and anti-imperialism. Central to the existence of such a tradition of critical reception are the generations of critics who, in more ways than one, control the discourse on and of Carlos Bulosan. This essay inquires into the sphere of the critical reception that orders, for our time and for the time ahead, the reading and interpretation of Bulosan. What eye and seeing, the essay asks, determine the perception of Bulosan as the angel of radicalism? What is obscured in constructing Bulosan as an immutable figure of the political? What light does the reader conceive when the personal is brought into the open and situated against the political? the essay explores the answers to these questions in Bulosan's loving letters to various friends, strangers, and white American women. The presence of these interrogations, the essay believes, will secure ultimately the continuing importance of Carlos Bulosan to radical literature and history.

  20. Monte Carlo alpha calculation

    Energy Technology Data Exchange (ETDEWEB)

    Brockway, D.; Soran, P.; Whalen, P.

    1985-01-01

    A Monte Carlo algorithm to efficiently calculate static alpha eigenvalues, N = ne/sup ..cap alpha..t/, for supercritical systems has been developed and tested. A direct Monte Carlo approach to calculating a static alpha is to simply follow the buildup in time of neutrons in a supercritical system and evaluate the logarithmic derivative of the neutron population with respect to time. This procedure is expensive, and the solution is very noisy and almost useless for a system near critical. The modified approach is to convert the time-dependent problem to a static ..cap alpha../sup -/eigenvalue problem and regress ..cap alpha.. on solutions of a/sup -/ k/sup -/eigenvalue problem. In practice, this procedure is much more efficient than the direct calculation, and produces much more accurate results. Because the Monte Carlo codes are intrinsically three-dimensional and use elaborate continuous-energy cross sections, this technique is now used as a standard for evaluating other calculational techniques in odd geometries or with group cross sections.

  1. Central San Juan caldera cluster: Regional volcanic framework

    Science.gov (United States)

    Lipman, Peter W.

    2000-01-01

    Eruption of at least 8800 km3 of dacitic-rhyolitic magma as 9 major ash-slow sheets (individually 150-5000 km3) was accompanied by recurrent caldera subsidence between 28.3 and about 26.5 Ma in the central San Juan Mountains, Colorado. Voluminous andesitic-decitic lavas and breccias were erupted from central volcanoes prior to the ash-flow eruptions, and similar lava eruptions continued within and adjacent to the calderas during the period of explosive volcanism, making the central San Juan caldera cluster an exceptional site for study of caldera-related volcanic processes. Exposed calderas vary in size from 10 to 75 km in maximum diameter, the largest calderas being associated with the most voluminous eruptions. After collapse of the giant La Garita caldera during eruption if the Fish Canyon Tuff at 17.6 Ma, seven additional explosive eruptions and calderas formed inside the La Garita depression within about 1 m.y. Because of the nested geometry, maximum loci of recurrently overlapping collapse events are inferred to have subsided as much as 10-17 km, far deeper than the roof of the composite subvolcanic batholith defined by gravity data, which represents solidified caldera-related magma bodies. Erosional dissection to depths of as much as 1.5 km, although insufficient to reach the subvolcanic batholith, has exposed diverse features of intracaldera ash-flow tuff and interleaved caldera-collapse landslide deposits that accumulated to multikilometer thickness within concurrently subsiding caldera structures. The calderas display a variety of postcollapse resurgent uplift structures, and caldera-forming events produced complex fault geometries that localized late mineralization, including the epithermal base- and precious-metal veins of the well-known Creede mining district. Most of the central San Juan calderas have been deeply eroded, and their identification is dependent on detailed geologic mapping. In contrast, the primary volcanic morphology of the

  2. Urban ecology of Triatoma infestans in San Juan, Argentina.

    Science.gov (United States)

    Vallvé, S L; Rojo, H; Wisnivesky-Colli, C

    1996-01-01

    This study was performed in an urban neighborhood of the capital city of the province of San Juan, Argentina. Erected as a housing complex, the place consists of 768 flats distributed in buildings of three and seven floors each. A survey was carried out in 33% of the dwellings, enquiring about the number of Triatoma infestans found indoors, stage of the bug development-nymph or adult- and how these insects had entered their homes. Adult T.infestans were found on all floors; 163 people (64%) had found them at least once, and 130 (51%) several times. Dispersal flight seems to have been the main mechanism of infestation by adult bugs in this area, and a total of 51% of the surveyed inhabitants reported that the insects had flown into their flats.

  3. Juan Antonio Rubio appointed as Director-General of CIEMAT

    CERN Multimedia

    2004-01-01

    Juan Antonio Rubio, Head of CERN's ETT unit (Education and Technology Transfer) has been appointed by the Spanish Ministry of Education and Science as the Director General of the Research Centre for Energy, Environment and Technology, CIEMAT. Dr Rubio's career began at the Spanish Nuclear Energy Commission where he held the posts of Investigator, Head of the High Energy Group and Head of Nuclear Physics and High Energy Division. Later, he was named Director of the Department of Basic Investigation and Scientific Director of the CIEMAT. In 1987 he joined CERN as Scientific Adviser to the Director General and Group Leader of the Scientific Assessment Group. Up to now, Dr Rubio has been the Head of the ETT unit, as well as Coordinator for Latin America and Commissioner for the 50th Anniversary of the Organization. He was born on 4 June 1944 in Madrid, and holds a Doctorate in Physical Sciences from the Universidad Complutense de Madrid.

  4. Urban ecology of Triatoma infestans in San Juan, Argentina

    Directory of Open Access Journals (Sweden)

    Silvana L Vallvé

    1996-08-01

    Full Text Available This study was performed in an urban neighborhood of the capital city of the province of San Juan, Argentina. Erected as a housing complex, the place consists of 768 flats distributed in buildings of three and seven floors each. A survey was carried out in 33% of the dwellings, enquiring about the number of Triatoma infestans found indoors, stage of the bug development - nymph or adult - and how these insects had entered their homes. Adult T.infestans were found on all floors; 163 people (64% had found them at least once, and 130 (51% several times. Dispersal flight seems to have been the main mechanism of infestation by adult bugs in this area, and a total of 51% of the surveyed inhabitants reported that the insects had flown into their flats.

  5. La "Celestina" de Palacio, Juan de Lucena y los conversos

    OpenAIRE

    Perez Lopez, Jose Luis

    2004-01-01

    En el presente artículo se publica por primera vez la Oración anónima que acompaña en el llamado «manuscrito de Palacio» al fragmento de la Celestina y al Diálogo de vida beata, obra, esta última, del converso Juan de Lucena. La Oración está escrita por un eclesiástico toledano converso -como lo fue, según los datos que aportamos, el propio Lucena- y podría tratarse de otra obra del mismo autor. Por lo que respecta al origen del manuscrito de Palacio, se defiende la posibili...

  6. La visión exiliar de Juan Gelman

    Directory of Open Access Journals (Sweden)

    María Ángeles PÉREZ LÓPEZ

    2009-11-01

    Full Text Available RESUMEN: En el poeta argentino Juan Gelman (1930, la traumática experiencia del exilio no viene a conformar sólo una parte importante de su producción, la comprendida entre 1975 y 1988, sino que además, y fundamentalmente, establece el desplazamiento hacia zonas de sentido en las que el lenguaje es también «el expulsado», el «vacío-pasión», «la marca de una ausencia que no cesa de no escribirse», en sus propios términos. De ahí que resulte tan relevante su encuentro con la poesía mística española, en la medida en que el místico es un exiliado de Dios (Citas y Comentarios, 1982, y con la poesía sefardí (Dibaxu, 1994, «como si la soledad extrema del exilio me empujara a buscar raíces en la lengua, las más profundas y exiliadas de la lengua».ABSTRACT: In the life of the Argentine poet Juan Gelman (1930, the traumatic experience of exile informs not only an important part of his production, the one that falls between 1975 and 1988, but also, and fundamentaly, it establishes the displacement to areas of significance in which language is also «the rejected», the «empty-passion», «the sign of an absence that does not finish writing itself», in his own words. From this, one discovers the importance of his encounter with Spanish mystical poetry, to the extent that the mystic is estranged from God (Citations and Comentaries, 1982 and with Sephardic poetry (Dibaxu, 1994, «as if the extreme solitude of exile compelled me to search for roots in language, the deepest and most estranged from language».

  7. Faulting and hydration of the Juan de Fuca plate system

    Science.gov (United States)

    Nedimović, Mladen R.; Bohnenstiehl, DelWayne R.; Carbotte, Suzanne M.; Pablo Canales, J.; Dziak, Robert P.

    2009-06-01

    Multichannel seismic observations provide the first direct images of crustal scale normal faults within the Juan de Fuca plate system and indicate that brittle deformation extends up to ~ 200 km seaward of the Cascadia trench. Within the sedimentary layering steeply dipping faults are identified by stratigraphic offsets, with maximum throws of 110 ± 10 m found near the trench. Fault throws diminish both upsection and seaward from the trench. Long-term throw rates are estimated to be 13 ± 2 mm/kyr. Faulted offsets within the sedimentary layering are typically linked to larger offset scarps in the basement topography, suggesting reactivation of the normal fault systems formed at the spreading center. Imaged reflections within the gabbroic igneous crust indicate swallowing fault dips at depth. These reflections require local alteration to produce an impedance contrast, indicating that the imaged fault structures provide pathways for fluid transport and hydration. As the depth extent of imaged faulting within this young and sediment insulated oceanic plate is primarily limited to approximately Moho depths, fault-controlled hydration appears to be largely restricted to crustal levels. If dehydration embrittlement is an important mechanism for triggering intermediate-depth earthquakes within the subducting slab, then the limited occurrence rate and magnitude of intraslab seismicity at the Cascadia margin may in part be explained by the limited amount of water imbedded into the uppermost oceanic mantle prior to subduction. The distribution of submarine earthquakes within the Juan de Fuca plate system indicates that propagator wake areas are likely to be more faulted and therefore more hydrated than other parts of this plate system. However, being largely restricted to crustal levels, this localized increase in hydration generally does not appear to have a measurable effect on the intraslab seismicity along most of the subducted propagator wakes at the Cascadia margin.

  8. Environmental laws for mining activities in Provincia de San Juan (Argentina), gravel mines exploitation

    International Nuclear Information System (INIS)

    Ramirez, M.; Carrascosa, H.

    2007-01-01

    This paper analyses San Juan Province - Argentina prevailing environmental legislation for mining activity and gravel mines. The study focuses the subject from a mining engineering point of view. (author)

  9. Inter- and Intraspecific Variations of Bacterial Communities Associated with Marine Sponges from San Juan Island, Washington

    KAUST Repository

    Lee, O. O.; Wong, Y. H.; Qian, P.-Y.

    2009-01-01

    This study attempted to assess whether conspecific or congeneric sponges around San Juan Island, Washington, harbor specific bacterial communities. We used a combination of culture-independent DNA fingerprinting techniques (terminal restriction

  10. THE SONG OF SONGS IN THE WORK OF LUIS DE LEON, SAN JUAN DE LA CRUZ Y JUAN GELMAN LANGUAGE, CHILDREN AND SPIRITUAL EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Geneviève Fabry

    2015-04-01

    Full Text Available This paper aims to study the intertextual traces dell Song of Songs in the work of Luis de León, San Juan de la Cruz and Juan Gelman from a particular point of view: the resonance in the vernacular of small biblical book as founder dimension of an experience spiritual, emotional and literary time. Choosing our corpus may surprise but, for one, would like to emphasize the importance of two pivotal moments in the reception of the Song: the Spanish Renaissance, whose approach to the Bible is enriched by new currents philological and exegetical of which Luis de León is a sublime representative; the late twentieth century in which an insistent intertextuality observed with sanjuanista work in one direction often foreign to Christian spirituality, as in the case of the Argentine Juan Gelman.

  11. Juan L. Ortíz: Primeros diálogos

    Directory of Open Access Journals (Sweden)

    Roxana Haydée Páez

    1996-11-01

    Full Text Available Emergencia, contextualización y diferencia de la poética de Juan L. Ortiz. El intertexto de lo que Julia Kristeva considera la primera vanguardia o vanguardia de fin de siglo, de los poetas argentinos posmodernistas, de Juan Ramón Jiménez. Vinculaciones del impresionismo de Ortiz, a través del simbolismo, el modernismo y el sencillismo

  12. Stenocercus doellojuradoi (Iguanidae, Tropidurinae): una nueva especie para la provincia de San Juan, Argentina

    OpenAIRE

    Laspiur, Alejandro; Acosta, Juan Carlos

    2006-01-01

    República Argentina, Provincia de San Juan, Depto. Valle Fértil, 3 km al norte de la localidad de Las Tumanas sobre la Ruta Provincial 510 (30°52’ S, 67°20’ W). COLECTOR: Alejandro Laspiur. FECHA: 25 /02/ 2006. MATERIAL DE REFERENCIA: Instituto y Museo de Ciencias Naturales, Universidad Nacional de San Juan: IMCNUNSJ 3000. Un ejemplar macho (LHC: 54 mm.).

  13. Stenocercus doellojuradoi (Iguanidae, Tropidurinae: una nueva especie para la provincia de San Juan, Argentina

    Directory of Open Access Journals (Sweden)

    Laspiur, Alejandro

    2006-05-01

    Full Text Available República Argentina, Provincia de San Juan, Depto. Valle Fértil, 3 km al norte de la localidad de Las Tumanas sobre la Ruta Provincial 510 (30°52’ S, 67°20’ W. COLECTOR: Alejandro Laspiur. FECHA: 25 /02/ 2006. MATERIAL DE REFERENCIA: Instituto y Museo de Ciencias Naturales, Universidad Nacional de San Juan: IMCNUNSJ 3000. Un ejemplar macho (LHC: 54 mm..

  14. Juan Gelman: Fábulas y revolución poética = Juan Gelman: Fables and poetic revolution

    Directory of Open Access Journals (Sweden)

    Ching-Yu Lin

    2016-09-01

    Full Text Available Resumen: El presente estudio se centra en Fábulas de Juan Gelman para analizar la vinculación entre el género fabulístico y la revolución poética subyacente en su obra. Se trata de un nuevo modo de contar la realidad y las circunstancias sociales. Los poemas mezclan la historia oficial y la ficción para proponer miradas alternativas y subvertir convencionalismos y formalismos. Además, se crean personajes anónimos a fin de relatar visiones fabulosas en relación con la identidad colectiva. Esta técnica causa un efecto del extrañamiento y distanciamiento que desemboca en una reflexión profunda sobre la vida real. Finalmente, se reescriben leyendas exóticas, inventando episodios, con la finalidad de llamar la atención sobre ciertos fenómenos de la sociedad actual e inspirar solidaridad.Abstract: This study focuses on Fábulas of Juan Gelman. The aim is to analyze the relationship between fable genre and poetic revolution in this work, in which Gelman provides a new way of describing reality and social circumstances. His poems combine official history with fiction to propose alternative views and subvert conventionalism and formalism. In addition, this poet creates anonymous characters to relate fabulous visions regarding the collective identity. This technique results in estrangement and distancing, which lead to profound reflection on real life. Finally, exotic legends are rewritten by means of invented episodes to draw attention to certain phenomena of modern society and inspire solidarity.

  15. Comentario al Libro Juan de Dios Carrasquilla, Hombre de Ciencia”

    Directory of Open Access Journals (Sweden)

    José Félix Patiño Restrepo

    2004-06-01

    Full Text Available

    La historia de la medicina es, en gran parte, la historia de la ciencia y la historia de la ciencia es la historia de la humanidad. A su vez, las biografías de los médicos conforman como lo dice Sherwin Nuland, la biografía de la medicina. Adolfo De Francisco Zea presenta la tercera biografía de médicos ilustres de Colombia. Primero en 1997 apareció su obra El Doctor José Félix Merizalde y la Medicina a comienzos del siglo XIX en Santa Fe de Bogotá. Luego, en 1999 como la anterior con el patrocinio de la Academia Colombiana de Historia, el estudio biográfico sobre Luis Zea Uribe. Su Vida y su Época, su eminente abuelo materno que tanta influencia tuvo en la escogencia de la medicina como vocación por Adolfo De Francisco.

    La presente obra Juan de Dios Carrasquilla, Hombre de Ciencia, es otra formidable biografía de un personaje que vivió a finales del siglo XIX, la gran revolución científica desatada con el descubrimiento del origen microbiano de las enfermedades, y como lo escribe el autor, “A Juan de Dios Carrasquilla le correspondió hacer el tránsito gradual que va desde las visiones clínicas de un pasado cercano, hasta las concepciones científicas de un presente más rico en soluciones para los problemas médicos, y más adecuado para el desarrollo de las investigaciones que habría de realizar en el difícil y poco explorado campo de la más temible de las enfermedades de todos los tiempos: la lepra”.

    Adolfo De Francisco presenta, en elegante prosa y con base en formidable documentación, la personalidad de Juan de Dios Carrasquilla, cuya vida fue fundamentalmente una continuada aventura intelectual. Como los médicos más destacados de su época, Carrasquilla viajó a Europa, motivado también por su interés en la mineralogía y la geología. En efecto, este médico, nieto de médico, desde temprana edad cultivó una afición especial por las ciencias naturales.

    Es así como De Francisco destaca

  16. A new record for American Bullfrog (Lithobates catesbeianus in San Juan, Argentina Nuevo registro de rana toro americana (Lithobates catesbeianus en San Juan, Argentina

    Directory of Open Access Journals (Sweden)

    Eduardo Sanabria

    2011-03-01

    Full Text Available We report a new record of Lithobates catesbeianus (American bullfrog from Argentina. L. catesbeianus was first introduced to San Juan Province 11 years ago in Calingasta Department, where the habitat is pre-cordilleran. The new record is for Zonda Department, San Juan Province, in the Monte desert region. Here, L. catesbeianus uses artificial ponds for reproduction and tadpole development. These ponds receive water from an irrigation system that connects the whole agriculture land in the region. The tadpoles use the irrigation canals to move among ponds. We suggest that legislation should be established to prevent future invasions and to achieve sustainable management of the wild American bullfrog populations in San Juan. Prevention of future invasion and management of established populations of this species requires the cooperation of numerous stake holders.Se presenta un nuevo registro de Lithobates catesbeianus (rana toro americana en Argentina. L. catesbeianus fue introducida por primera vez a la provincia de San Juan hace 11 años en el Departamento Calingasta, donde el hábitat es pre-cordillerano. El nuevo registro es para el Departamento Zonda en la provincia de San Juan, en el desierto del Monte. En este sitio, L. catesbeianus usa estanques artificiales para la reproducción y desarrollo del renacuajo. Los estanques reciben agua de un sistema de riego que conecta todas las tierras de la agricultura en la región. Los renacuajos utilizan los canales de riego para moverse entre los estanques. Sugerimos que se establezcan leyes para prevenir invasiones futuras y para lograr un manejo integrado de las poblaciones silvestres de rana toro que se encuentran en San Juan. La prevención de futuras invasiones y el manejo de las poblaciones establecidas de esta especie requieren la cooperación de numerosas entidades tanto gubernamentales como privadas.

  17. Juan Carlos Rico, ed. – Museos del Templo al Laboratorio: La Investigación Teórica

    Directory of Open Access Journals (Sweden)

    Alexandre Matos

    2014-06-01

    Full Text Available Pensar 25 anos de investigação científica é um trabalho corajoso que deve ser sempre reconhecido pela comunidade científica e incentivado, se não pela consciência dos seus responsáveis, pelas universidades e centros de investigação. É corajoso em qualquer área científica, mas permitam-nos o arrojo de o considerar um pouco mais numa área como a museologia e, especificamente, nas questões relacionadas com o processo expositivo, entendido no seu todo, pensando em conteúdo, contentor, produtores ...

  18. Danger on mountain roads, Iglesia Department, San Juan, Argentina

    International Nuclear Information System (INIS)

    Varela, S.; Puertas, M.

    2007-01-01

    This paper is related to Mining Projects at Valle del Cura - Iglesia Department-San Juan Province-Argentina Republic. Basis for an Integrated Management of a Sustainable Mining.It aims at locating and analyzing natural dangers which may interfere high mountain paths, such as climatic, anthropic and/or tectonic factors since they may stop a region development. A hillside, a mountainside,a talus or a slope may have, due to their extensive areas, either lithological or structural variations which might determine the presence of un stability phenomena.The cordillera n Iglesia sector major dangers are related to mass displacement movements as a result of the great quantity of unstable detritus situated in valleys slopes.Landsat images, aerial photographs, topographic and geological maps data allowed to detect several sectors that may generate mass displacement movements, Arroyo de Aguas Negras rising sector was selected because it is on the right of National Route No. 150 trace. It is not only a national, but also an international route that connects Argentina and Chile.(author)

  19. Third annual Lectureship of the Juan A. del Regato Foundation

    International Nuclear Information System (INIS)

    Fletcher, G.H.

    1979-01-01

    Since Juan del Regato started in 1931 at the Curie Foundation, great progress has been made in improved control rates and in our understanding of the basic principles of radiotherapy. Today, the management of cancers by irradiation is a composite of radiobiological concepts and knowledge of the behavior of the tumors. This blend of basic science and clinical knowledge has given considerable insight into general oncology. A somber note is appropriate. There is still plenty to be learned. The value of high linear energy transfer (LET) radiation, multifractionation, and hypoxic cell sensitizers are areas that require clinical investigation. The proliferation of radiotherapy facilities has resulted in the dispersion of clinical material and in the United States there are no Centers with enough patients to carry out meaningful investigations. Because of the complexity of the treatment schemes, cooperative studies involving a large number of participants fail to prove or disprove any hypothesis. If advances are to be made in clinical radiotherapy, there will have to be willingness to refer patients to Centers that are equipped for specific investigations

  20. Fruit and fertility in San Juan de la Manguana.

    Science.gov (United States)

    Mckenna, N D

    1995-01-01

    Ana Irsa (Nisoris) Aquina, 39, a mother of seven, grandmother, wife, and voluntary community health facilitator, lives in the Dominican Republic. Nisoris counsels women and their partners about reproductive health, provides child survival information to new mothers, and dispenses common remedies for diarrhea and respiratory infections as well as contraceptives (mainly oral contraceptives and condoms). These supplies are financed by Fundacion para el Desarrollo Communitario (FUDECO), a nongovernmental agency which is a member of the Save the Children alliance. FUDECO's work includes the development of water systems, health services, schools, and soil conservation training. Widespread deforestation in the San Juan area has led to a reduction in self-sufficient farming and a lack of nutrition evidenced by an increase in infant blindness caused by Vitamin A deficiency. To combat this situation, FUDECO has taught the women's group led by Nisoris how to use solar power to dry fruits and vegetables to preserve them for consumption beyond their season. The pilot group has in turn taught six other women's groups and conducted informal product sampling and Vitamin A information sessions in the local market. FUDECO provides supplies and technical expertise. The program has been so successful that the women are exploring packaging options so that they can sell the dried produce.

  1. Monte Carlo Methods in Physics

    International Nuclear Information System (INIS)

    Santoso, B.

    1997-01-01

    Method of Monte Carlo integration is reviewed briefly and some of its applications in physics are explained. A numerical experiment on random generators used in the monte Carlo techniques is carried out to show the behavior of the randomness of various methods in generating them. To account for the weight function involved in the Monte Carlo, the metropolis method is used. From the results of the experiment, one can see that there is no regular patterns of the numbers generated, showing that the program generators are reasonably good, while the experimental results, shows a statistical distribution obeying statistical distribution law. Further some applications of the Monte Carlo methods in physics are given. The choice of physical problems are such that the models have available solutions either in exact or approximate values, in which comparisons can be mode, with the calculations using the Monte Carlo method. Comparison show that for the models to be considered, good agreement have been obtained

  2. De Juan Goytisolo à Monique Lange, de Monique Lange à Juan Goytisolo : une "intertextualité conjugale"

    Directory of Open Access Journals (Sweden)

    Emmanuel Le Vagueresse

    2006-09-01

    Full Text Available Juan Goytisolo (né en 1931, écrivain espagnol, et Monique Lange (1926-1996, écrivain français, ont produit chacun une œuvre à forte résonance autobiographique, sous couvert de fiction, et qui crée un effet très particulier d’inter­textualité par le simple fait qu’ils étaient, dans la vie, mari et femme... D’où ce titre « d’intertextualité conjugale », car ces récits auto-fictionnels croisés de relations communes s’enri­chissent particulièrement du regard critique et lucide de la romancière sur les obsessions personnelles de son écrivain de mari, les décryptant par le biais de personnages « inventés » qui, non seulement renseignent sur un destin littéraire partagé, mais encore et surtout, dans une configuration rare de double écriture, permettent chez Lange de lire différemment les lignes souvent floues (sur la sexualité, les parias, le monde arabe de l’écrivain espagnol bien connu, et même de démystifier ses discours d’Espagnol marginal.

  3. DOCTOR JUAN CLIMACO HERNANDEZ (Tunja,1881-1961

    Directory of Open Access Journals (Sweden)

    Alfonso Vargas Rubiano

    1984-07-01

    Full Text Available

    Hace un tiempo vengo estudiando con fervorosa dedicación la obra pedagógica, sociopolítica, etnológica y cultural de uno de los grandes boyacenses de este siglo, el médico Juan Clímaco Hernández y he encontrado datos muy valiosos de la historia de nuestra educación médica en las postrimerías del pasado siglo y comienzos del actual, que bien valen la pena ser conocidos puesto que las Memorias de Ibáñez terminan en 1884 y el estudio hecho por el Dr. Juan N. Corpas si bien comprende hasta 1922, es muy poco lo que refiere al período que en nuestra historia nacional se conoce como de la Guerra de los 1000 días.


    EL NACIMIENTO Y BACHILLERATO EN TUNJA (1881-1897

    El 22 de noviembre de 1879, en la solemne sesión de clausura de estudios de la recientemente fundada Facultad de Medicina de la Universidad Nacional de los Estados Unidos de Colombia, recibían el grado de médicos los jóvenes Rodolfo Rueda, Manuel J
    Urruchurtu, Rafael Baquero, Eugenio de la Hoz y Miguel Hernández. Este último, nacido en Santa Marta, de 34 años de edad, había sido maestro de escuela superior en el Departamento del Magdalena, y recién graduado se trasladó a la ciudad de Tunja, como médico del Batallón Bolívar y allí ejerció su profesión hasta su muerte en 1911, alternándola con el periodismo y la política; fue elegido Diputado a la Asamblea de Boyacá en el período 1880-82 por el liberalismo de la provincia. Dicen las crónicas de la época que "a la Botica del Negro Hernández acudían todas las clases sociales, sin distinción alguna, a solicitar sus servicios médicos; los pobres sabían muy bien que en él tenían un defensor de sus derechos, listo siempre a aliviar sus dolores y miserias; y algunos contertulios iban en busca de distracción, charla agradable, tresillo tras los frascos y también, en noches especiales una mesa redonda con carpeta verde dejaba que los dados corriesen libremente

  4. 75 FR 62112 - Intent To Prepare an Environmental Impact Statement (EIS) for the San Juan Creek and Tributaries...

    Science.gov (United States)

    2010-10-07

    ... evaluate flood risk management alternative measures along the lower portions of San Juan, Trabuco, and Oso... to its confluence with Tijeras Creek; and Oso Creek from its confluence with Trabuco Creek northwest approximately 4.5 miles to just north of Oso Parkway. The communities of San Juan Capistrano, Mission Viejo...

  5. Confirmación de Amphisbaena angustifrons plumbea (Squamata: Amphisbaenidae) en la provincia de San Juan, Argentina

    OpenAIRE

    Acosta, Juan Carlos; Murúa, Fernando; Ortiz, Graciela

    1996-01-01

    Amphisbaena angustifrons plumbea (Gray). República Argentina, provincia de San Juan, Valle del Tulum, departamento Chimbas, Villa Sarmiento (31º 29' S, 69º 30' W) 12 de noviembre de 1995. Un ejemplar adulto, IMCN - UNSJ 102 (Instituto y Museo de Ciencias Naturales, Universidad Nacional de San Juan).

  6. 78 FR 50104 - Notice of Inventory Completion: U.S. Department of the Interior, National Park Service, San Juan...

    Science.gov (United States)

    2013-08-16

    ... representing a minimum of 36 individuals were removed from the English Camp Site in San Juan County, WA, during... the English Camp Site in San Juan County, WA, during legally authorized excavations by Professor Julie... osteological analysis, archeological data, geographic context and accession data, the 76 individuals from the...

  7. 33 CFR 162.260 - Channel leading to San Juan Harbor, P.R.; use, administration, and navigation.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Channel leading to San Juan Harbor, P.R.; use, administration, and navigation. 162.260 Section 162.260 Navigation and Navigable... WATERWAYS NAVIGATION REGULATIONS § 162.260 Channel leading to San Juan Harbor, P.R.; use, administration...

  8. Segmented Subduction Across the Juan De Fuca Plate: Challenges in Imaging with an Amphibious Array

    Science.gov (United States)

    Hawley, W. B.; Allen, R. M.

    2014-12-01

    The Cascadia Initiative (CI) is an amphibious array spanning the Juan de Fuca plate from formation at the ridge to the destruction of the slab in the mantle beneath western North America. This ambitions project has occupied over 300 onshore and offshore sites, providing an unprecedented opportunity to understand the dynamics of oceanic plates. The CI project is now in its fourth and final year of deployment. Here we present constraints on the structure of the Juan de Fuca plate and its interaction with western North America. We identify segmentation along the Cascadia subduction zone that can be traced back onto the Juan de Fuca plate prior to subduction. These results give insight into the life cycle of oceanic plates, from their creation at a mid-ocean ridge to their subduction and subsequent recycling into the mantle.

  9. A jewel in the desert: BHP Billiton's San Juan underground mine

    Energy Technology Data Exchange (ETDEWEB)

    Buchsbaum, L.

    2007-12-15

    The Navajo Nation is America's largest native American tribe by population and acreage, and is blessed with large tracks of good coal deposits. BHP Billiton's New Mexico Coal Co. is the largest in the Navajo regeneration area. The holdings comprise the San Juan underground mine, the La Plata surface mine, now in reclamation, and the expanding Navajo surface mine. The article recounts the recent history of the mines. It stresses the emphasis on sensitivity to and helping to sustain tribal culture, and also on safety. San Juan's longwall system is unique to the nation. It started up as an automated system from the outset. Problems caused by hydrogen sulfide are being tackled. San Juan has a bleederless ventilation system to minimise the risk of spontaneous combustion of methane and the atmospheric conditions in the mine are heavily monitored, especially within the gob areas. 3 photos.

  10. Lectures on Monte Carlo methods

    CERN Document Server

    Madras, Neal

    2001-01-01

    Monte Carlo methods form an experimental branch of mathematics that employs simulations driven by random number generators. These methods are often used when others fail, since they are much less sensitive to the "curse of dimensionality", which plagues deterministic methods in problems with a large number of variables. Monte Carlo methods are used in many fields: mathematics, statistics, physics, chemistry, finance, computer science, and biology, for instance. This book is an introduction to Monte Carlo methods for anyone who would like to use these methods to study various kinds of mathemati

  11. Un nuevo retrato ecuestre de Carlos II, por Herrera Barnuevo

    Directory of Open Access Journals (Sweden)

    Pascual Chenel, Alvaro

    2005-06-01

    Full Text Available En 1667 moría Juan Bautista Martínez del Mazo, yerno de Velazquez, sucediéndole en el puesto de Pintor de Cámara, Sebastián de Herrera Barnuevo que lo ocupará hasta su muerte en 1671. Al acceder a este importante cargo, cuyo cometido fundamental era suministrar la imagen oficial del Monarca reinante. Herrera Barnuevo era ya un artista muy conocido en la Corte, pues desempeñaba el cargo de Maestro Mayor de las Obras Reales desde 1662. Será a partir de esa fecha cuando comience a desarrollarse su labor de retratista regio, creando ejemplos interesantísimos que suponen el origen de un nuevo modelo de retrato oficial que responde a una intención de exaltación del joven rey, muy unida a la propaganda política. El cuadro que ahora damos a conocer es un retrato ecuestre de Carlos II niño, a los 8 ó 9 años de edad, cabalgando briosamente sobre un imponente corcel en posición de corbeta…

  12. [The medical world of Juan Gil de Zamora's Historia Naturalis (ca. 1275-1296)].

    Science.gov (United States)

    García Ballester, L; Domínguez, A

    1994-01-01

    The article describes the authors and works which were quoted by the Franciscan Juan Gil de Zamora in his Historia naturalis, a scientific encyclopaedia written between c. 1275 and before 1296, probably in the Franciscan monastery of Zamora (Kingdom of Castille). Juan Gil made wide use of the Avicenna's Canon, Gilbertus de Aquila (Anglicus)'s Compendium medicine, and Salernitan medical literature. His work contributed to the diffusion of these medical authors and works throughout the Christian intellectual milieu of late medieval Castille. This diffusion was not without problems.

  13. Environmental geologic analysis of Rio de las Taguas basin Departmento Iglesia San Juan Argentina

    International Nuclear Information System (INIS)

    Arroqui Langer, A.; Cardus, A.; Sindern, S.; Nozica, G.

    2007-01-01

    A mineral environmental research project results where it has been located in Rio de las Taguas basin, Departamento Iglesia, Provincia de San Juan, Argentina. It has been placed in frontal Andean mountain in San Juan. In this geographic framework has been developed Au and Ag mineral project in order the world scale. The aim of this article is has been related the mineral and geological units bet wen the basin chemistry as well as to carry out future measurements mines impacts in this area. (author)

  14. Juan Mayorga's adaptations of Lope: La dama boba in the 21st century

    Directory of Open Access Journals (Sweden)

    Mónica Molanes

    2012-12-01

    Full Text Available The adaptations made by one of today’s most eminent playwrights, Juan Mayorga, on the texts by Lope de Vega which were represented during the first decade of the 21st century allow us to analyse some of the most relevant aspects in the reception, canonization and theatrical interpretation of 17th century theatre. This study will thus focus on Lope’s La Dama Boba and the adaptation offered by Juan Mayorga for the Compañía Nacional de Teatro Clásico, directed by Helena Pimenta in 2002.

  15. Pedagogic Juan Andrés Cué Bada's work (1935-1979

    Directory of Open Access Journals (Sweden)

    Janet Reinaldo-Delgado

    2017-06-01

    Full Text Available Juan Andrés Cué Bada was born on November 30, 1908 in the province of Las Tunas. He had an active political participation against Machado and Batista, while he dedicated himself to private education. After the triumph of the Cuban Revolution in 1959 he moved to Santiago de Cuba and in 1962 began his professorial course at the Universidad de Oriente until he died in 1979. Because of the lack of knowledge about his figure and his work as a teacher, this article Intends to explain the pedagogical work of Juan Andrés Cué Bada between the years 1935 and 1979.

  16. Advanced Multilevel Monte Carlo Methods

    KAUST Repository

    Jasra, Ajay; Law, Kody; Suciu, Carina

    2017-01-01

    This article reviews the application of advanced Monte Carlo techniques in the context of Multilevel Monte Carlo (MLMC). MLMC is a strategy employed to compute expectations which can be biased in some sense, for instance, by using the discretization of a associated probability law. The MLMC approach works with a hierarchy of biased approximations which become progressively more accurate and more expensive. Using a telescoping representation of the most accurate approximation, the method is able to reduce the computational cost for a given level of error versus i.i.d. sampling from this latter approximation. All of these ideas originated for cases where exact sampling from couples in the hierarchy is possible. This article considers the case where such exact sampling is not currently possible. We consider Markov chain Monte Carlo and sequential Monte Carlo methods which have been introduced in the literature and we describe different strategies which facilitate the application of MLMC within these methods.

  17. Advanced Multilevel Monte Carlo Methods

    KAUST Repository

    Jasra, Ajay

    2017-04-24

    This article reviews the application of advanced Monte Carlo techniques in the context of Multilevel Monte Carlo (MLMC). MLMC is a strategy employed to compute expectations which can be biased in some sense, for instance, by using the discretization of a associated probability law. The MLMC approach works with a hierarchy of biased approximations which become progressively more accurate and more expensive. Using a telescoping representation of the most accurate approximation, the method is able to reduce the computational cost for a given level of error versus i.i.d. sampling from this latter approximation. All of these ideas originated for cases where exact sampling from couples in the hierarchy is possible. This article considers the case where such exact sampling is not currently possible. We consider Markov chain Monte Carlo and sequential Monte Carlo methods which have been introduced in the literature and we describe different strategies which facilitate the application of MLMC within these methods.

  18. TARC: Carlo Rubbia's Energy Amplifier

    CERN Multimedia

    Laurent Guiraud

    1997-01-01

    Transmutation by Adiabatic Resonance Crossing (TARC) is Carlo Rubbia's energy amplifier. This CERN experiment demonstrated that long-lived fission fragments, such as 99-TC, can be efficiently destroyed.

  19. Monte Carlo simulation for IRRMA

    International Nuclear Information System (INIS)

    Gardner, R.P.; Liu Lianyan

    2000-01-01

    Monte Carlo simulation is fast becoming a standard approach for many radiation applications that were previously treated almost entirely by experimental techniques. This is certainly true for Industrial Radiation and Radioisotope Measurement Applications - IRRMA. The reasons for this include: (1) the increased cost and inadequacy of experimentation for design and interpretation purposes; (2) the availability of low cost, large memory, and fast personal computers; and (3) the general availability of general purpose Monte Carlo codes that are increasingly user-friendly, efficient, and accurate. This paper discusses the history and present status of Monte Carlo simulation for IRRMA including the general purpose (GP) and specific purpose (SP) Monte Carlo codes and future needs - primarily from the experience of the authors

  20. Adjoint electron Monte Carlo calculations

    International Nuclear Information System (INIS)

    Jordan, T.M.

    1986-01-01

    Adjoint Monte Carlo is the most efficient method for accurate analysis of space systems exposed to natural and artificially enhanced electron environments. Recent adjoint calculations for isotropic electron environments include: comparative data for experimental measurements on electronics boxes; benchmark problem solutions for comparing total dose prediction methodologies; preliminary assessment of sectoring methods used during space system design; and total dose predictions on an electronics package. Adjoint Monte Carlo, forward Monte Carlo, and experiment are in excellent agreement for electron sources that simulate space environments. For electron space environments, adjoint Monte Carlo is clearly superior to forward Monte Carlo, requiring one to two orders of magnitude less computer time for relatively simple geometries. The solid-angle sectoring approximations used for routine design calculations can err by more than a factor of 2 on dose in simple shield geometries. For critical space systems exposed to severe electron environments, these potential sectoring errors demand the establishment of large design margins and/or verification of shield design by adjoint Monte Carlo/experiment

  1. Monte Carlo theory and practice

    International Nuclear Information System (INIS)

    James, F.

    1987-01-01

    Historically, the first large-scale calculations to make use of the Monte Carlo method were studies of neutron scattering and absorption, random processes for which it is quite natural to employ random numbers. Such calculations, a subset of Monte Carlo calculations, are known as direct simulation, since the 'hypothetical population' of the narrower definition above corresponds directly to the real population being studied. The Monte Carlo method may be applied wherever it is possible to establish equivalence between the desired result and the expected behaviour of a stochastic system. The problem to be solved may already be of a probabilistic or statistical nature, in which case its Monte Carlo formulation will usually be a straightforward simulation, or it may be of a deterministic or analytic nature, in which case an appropriate Monte Carlo formulation may require some imagination and may appear contrived or artificial. In any case, the suitability of the method chosen will depend on its mathematical properties and not on its superficial resemblance to the problem to be solved. The authors show how Monte Carlo techniques may be compared with other methods of solution of the same physical problem

  2. Juan Linz ja eestlane Aleksander Kesküla / Kaido Jaanson

    Index Scriptorium Estoniae

    Jaanson, Kaido, 1940-

    2002-01-01

    Eestlasest revolutsionääri Aleksander Kesküla elust Hispaanias aastail 1934-1963. Artikli aluseks on A. Kesküla Hispaania-perioodi väheste sõprade, eelkõige tänaseks rahvusvaheliselt tunnustatud sotsioloogi Juan Linz'i meenutused

  3. First inventory of the echinoderms from Juan de Nova (Iles Eparses ...

    African Journals Online (AJOL)

    Juan de Nova is one of the Iles Eparses, French islands scattered in the Mozambique Channel (Western India Ocean). They have been kept isolated of the anthropogenic influences which makes them rare areas to study biodiversity and provides elements of comparison with areas that are strongly impacted by urbanization ...

  4. Tiffany Diamonds and Classical Music as Influences on the Performance of "Don Juan in Hell".

    Science.gov (United States)

    Johnson, Jim

    This paper analyzes Paul Gregory's 1951 production of "Don Juan in Hell," now considered to be a seminal work in the development of professional and educational readers theatre. The paper contends that the production, which presented a nondramatic work without the usual emphasis on design and spectacle, forced a reexamination of the role…

  5. Juan Rulfo and Machado de Assis: Toward an Integrated New Narrative

    Science.gov (United States)

    Wiseman, David P.; Krause, James R.

    2016-01-01

    Despite apparent connections between Brazilian and Spanish American narratives, comparative scholarship has only recently begun to investigate actively these important points of contact. In this study, we introduce a vital crossover between the two traditions, involving Juan Rulfo and Joaquim Maria Machado de Assis. Rulfo's outspoken affinity for…

  6. 77 FR 52310 - Expansion of Foreign-Trade Zone 61, San Juan, Puerto Rico

    Science.gov (United States)

    2012-08-29

    ... 61, San Juan, Puerto Rico Pursuant to its authority under the Foreign-Trade Zones Act of June 18... Order: Whereas, the Puerto Rico Trade and Export Company, grantee of Foreign-Trade Zone 61, submitted an application to the Board for authority to expand FTZ 61 to include a site in Aguadilla, Puerto Rico, adjacent...

  7. DON JUAN: THE DISCOURSE OF SEDUCTION AS AN EXERCISE OF POWER

    Directory of Open Access Journals (Sweden)

    Kristina Stankevičiūtė

    2016-10-01

    Full Text Available The figure of Don Juan that emerged in Spanish baroque synthesised several important cultural issues related to the phenomenon of seduction, a subject of great social controversy since the very beginning of the Christian era. The present article analyses one of the fundamental parts of the universal appeal of the Don Juan figure – the discourse of seduction, considering it from the social and cultural point of view. The traditional discussion of the subject focuses on the contents of the discourse whereas the present article emphasises the implications rather than the contents, grounding its arguments on Jean Baudrillard’s theory of seduction, which claims that it is the signs and the play of signs that are important in seduction, not their meanings. The seduction discourse is seen as a means to exercise power on the women that Don Juan deals with as well as on the audience who gets involved into the discourse creation process. The article concludes with a claim that Don Juan is a figure of social domination, and his discourse is a means to achieve it.

  8. Colombia kunstnik Juan Manuel Echavarría Tallinnas / Kadri Karro

    Index Scriptorium Estoniae

    Karro, Kadri

    2011-01-01

    Juan Manuel Echavarría külastab Tallinna 12.-15. aprillini 2011, 13. apr.-l toimub Eesti Kunstiakadeemia Rüütelkonna hoones tema artist talk. Kunstniku holograafiliste trükiste sarjast "Reekviem NN" (2008-2010), mida eksponeeritakse Tallinna 15. graafikatriennaalil Kumu Kunstimuuseumis

  9. Declining Marbled Murrelet density, but not productivity, in the San Juan Islands, Washington, USA

    Science.gov (United States)

    Teresa J. Lorenz; Martin G. Raphael

    2018-01-01

    The Marbled Murrelet (Brachyramphus marmoratus) is federally threatened in part of its range in western North America. Information on density and productivity is important for managing populations. Over an 18-yr period, we monitored murrelet density and productivity ratios during the breeding season along 170 km of shoreline of the San Juan Islands...

  10. View of sand dunes in the San Juan Province of Western Argentina

    Science.gov (United States)

    1975-01-01

    A near vertical view of sand dunes in the San Juan Province of Western Argentina, as photographed from the Apollo spacecraft in Earth orbit during the joint U.S.-USSR Apollo Soyuz Test Project (ASTP) mission. The picture was taken at an altitude of 220 kilometers (136 statute miles). The photograph was taken at an altitude of 228 kilometers (141 statute miles).

  11. PRELIMINARY GEOID MODEL IN SAN JUAN PROVINCE: A CASE STUDY IN THE ANDES

    DEFF Research Database (Denmark)

    Tocho, Claudia; Miranda, Silvia; Pacino, Maria Cristina

    2008-01-01

    A high-resolution and high-precision detailed gravimetric geoid has been computed for San Juan province in Argentina, ranging from 27 degrees S to 34 degrees S in latitude and 72 degrees W to 65 degrees W in longitude. The gravimetric geoid was calculated using the RTM method, a multiband spheric...

  12. Hurricane recovery at Cabezas de San Juan, Puerto Rico, and research opportunities at Conservation Trust Reserves

    Science.gov (United States)

    Peter L. Weaver; Elizabeth Padilla Rodriguez

    2009-01-01

    The Cabezas de San Juan Natural Reserve (El Faro), an exposed peninsular area located in the Subtropical dry forest of northeastern Puerto Rico, was impacted by hurricanes Hugo (1989) and Georges (1998). From 1998 to 2008, a 0.10 ha plot was used to assess forest structure, species composition, and stem growth. During post-hurricane recovery, stem density, tree height...

  13. Multilevel sequential Monte Carlo samplers

    KAUST Repository

    Beskos, Alexandros; Jasra, Ajay; Law, Kody; Tempone, Raul; Zhou, Yan

    2016-01-01

    In this article we consider the approximation of expectations w.r.t. probability distributions associated to the solution of partial differential equations (PDEs); this scenario appears routinely in Bayesian inverse problems. In practice, one often has to solve the associated PDE numerically, using, for instance finite element methods which depend on the step-size level . hL. In addition, the expectation cannot be computed analytically and one often resorts to Monte Carlo methods. In the context of this problem, it is known that the introduction of the multilevel Monte Carlo (MLMC) method can reduce the amount of computational effort to estimate expectations, for a given level of error. This is achieved via a telescoping identity associated to a Monte Carlo approximation of a sequence of probability distributions with discretization levels . ∞>h0>h1⋯>hL. In many practical problems of interest, one cannot achieve an i.i.d. sampling of the associated sequence and a sequential Monte Carlo (SMC) version of the MLMC method is introduced to deal with this problem. It is shown that under appropriate assumptions, the attractive property of a reduction of the amount of computational effort to estimate expectations, for a given level of error, can be maintained within the SMC context. That is, relative to exact sampling and Monte Carlo for the distribution at the finest level . hL. The approach is numerically illustrated on a Bayesian inverse problem. © 2016 Elsevier B.V.

  14. Multilevel sequential Monte Carlo samplers

    KAUST Repository

    Beskos, Alexandros

    2016-08-29

    In this article we consider the approximation of expectations w.r.t. probability distributions associated to the solution of partial differential equations (PDEs); this scenario appears routinely in Bayesian inverse problems. In practice, one often has to solve the associated PDE numerically, using, for instance finite element methods which depend on the step-size level . hL. In addition, the expectation cannot be computed analytically and one often resorts to Monte Carlo methods. In the context of this problem, it is known that the introduction of the multilevel Monte Carlo (MLMC) method can reduce the amount of computational effort to estimate expectations, for a given level of error. This is achieved via a telescoping identity associated to a Monte Carlo approximation of a sequence of probability distributions with discretization levels . ∞>h0>h1⋯>hL. In many practical problems of interest, one cannot achieve an i.i.d. sampling of the associated sequence and a sequential Monte Carlo (SMC) version of the MLMC method is introduced to deal with this problem. It is shown that under appropriate assumptions, the attractive property of a reduction of the amount of computational effort to estimate expectations, for a given level of error, can be maintained within the SMC context. That is, relative to exact sampling and Monte Carlo for the distribution at the finest level . hL. The approach is numerically illustrated on a Bayesian inverse problem. © 2016 Elsevier B.V.

  15. Nuevas aplicaciones científicas del telescopio astrográfico doble de la estación de altura Carlos U. Cesco (OAFA)

    Science.gov (United States)

    González, E. P. A.; Podesta, F.

    2017-10-01

    For the last 50 years, the Double Astrograph located at the Carlos U. Cesco station of the Observatorio Astronómico Felix Aguilar, San Juan, Argentina, was used for observations and research in the field of astrometry. The main programs involved the study of asteroid positions and proper motions of stars in the southern hemisphere, being the latter a long time project that is near completion from which the SPM4 catalog is the most recent version. In this paper, new scientific applications in the field of photometry that can be accomplished with this telescope are presented. These first attempts show the potential of the instrument for such tasks.

  16. Strategije drevesnega preiskovanja Monte Carlo

    OpenAIRE

    VODOPIVEC, TOM

    2018-01-01

    Po preboju pri igri go so metode drevesnega preiskovanja Monte Carlo (ang. Monte Carlo tree search – MCTS) sprožile bliskovit napredek agentov za igranje iger: raziskovalna skupnost je od takrat razvila veliko variant in izboljšav algoritma MCTS ter s tem zagotovila napredek umetne inteligence ne samo pri igrah, ampak tudi v številnih drugih domenah. Čeprav metode MCTS združujejo splošnost naključnega vzorčenja z natančnostjo drevesnega preiskovanja, imajo lahko v praksi težave s počasno konv...

  17. Is Monte Carlo embarrassingly parallel?

    Energy Technology Data Exchange (ETDEWEB)

    Hoogenboom, J. E. [Delft Univ. of Technology, Mekelweg 15, 2629 JB Delft (Netherlands); Delft Nuclear Consultancy, IJsselzoom 2, 2902 LB Capelle aan den IJssel (Netherlands)

    2012-07-01

    Monte Carlo is often stated as being embarrassingly parallel. However, running a Monte Carlo calculation, especially a reactor criticality calculation, in parallel using tens of processors shows a serious limitation in speedup and the execution time may even increase beyond a certain number of processors. In this paper the main causes of the loss of efficiency when using many processors are analyzed using a simple Monte Carlo program for criticality. The basic mechanism for parallel execution is MPI. One of the bottlenecks turn out to be the rendez-vous points in the parallel calculation used for synchronization and exchange of data between processors. This happens at least at the end of each cycle for fission source generation in order to collect the full fission source distribution for the next cycle and to estimate the effective multiplication factor, which is not only part of the requested results, but also input to the next cycle for population control. Basic improvements to overcome this limitation are suggested and tested. Also other time losses in the parallel calculation are identified. Moreover, the threading mechanism, which allows the parallel execution of tasks based on shared memory using OpenMP, is analyzed in detail. Recommendations are given to get the maximum efficiency out of a parallel Monte Carlo calculation. (authors)

  18. Is Monte Carlo embarrassingly parallel?

    International Nuclear Information System (INIS)

    Hoogenboom, J. E.

    2012-01-01

    Monte Carlo is often stated as being embarrassingly parallel. However, running a Monte Carlo calculation, especially a reactor criticality calculation, in parallel using tens of processors shows a serious limitation in speedup and the execution time may even increase beyond a certain number of processors. In this paper the main causes of the loss of efficiency when using many processors are analyzed using a simple Monte Carlo program for criticality. The basic mechanism for parallel execution is MPI. One of the bottlenecks turn out to be the rendez-vous points in the parallel calculation used for synchronization and exchange of data between processors. This happens at least at the end of each cycle for fission source generation in order to collect the full fission source distribution for the next cycle and to estimate the effective multiplication factor, which is not only part of the requested results, but also input to the next cycle for population control. Basic improvements to overcome this limitation are suggested and tested. Also other time losses in the parallel calculation are identified. Moreover, the threading mechanism, which allows the parallel execution of tasks based on shared memory using OpenMP, is analyzed in detail. Recommendations are given to get the maximum efficiency out of a parallel Monte Carlo calculation. (authors)

  19. Exact Monte Carlo for molecules

    International Nuclear Information System (INIS)

    Lester, W.A. Jr.; Reynolds, P.J.

    1985-03-01

    A brief summary of the fixed-node quantum Monte Carlo method is presented. Results obtained for binding energies, the classical barrier height for H + H 2 , and the singlet-triplet splitting in methylene are presented and discussed. 17 refs

  20. Monte Carlo - Advances and Challenges

    International Nuclear Information System (INIS)

    Brown, Forrest B.; Mosteller, Russell D.; Martin, William R.

    2008-01-01

    Abstract only, full text follows: With ever-faster computers and mature Monte Carlo production codes, there has been tremendous growth in the application of Monte Carlo methods to the analysis of reactor physics and reactor systems. In the past, Monte Carlo methods were used primarily for calculating k eff of a critical system. More recently, Monte Carlo methods have been increasingly used for determining reactor power distributions and many design parameters, such as β eff , l eff , τ, reactivity coefficients, Doppler defect, dominance ratio, etc. These advanced applications of Monte Carlo methods are now becoming common, not just feasible, but bring new challenges to both developers and users: Convergence of 3D power distributions must be assured; confidence interval bias must be eliminated; iterated fission probabilities are required, rather than single-generation probabilities; temperature effects including Doppler and feedback must be represented; isotopic depletion and fission product buildup must be modeled. This workshop focuses on recent advances in Monte Carlo methods and their application to reactor physics problems, and on the resulting challenges faced by code developers and users. The workshop is partly tutorial, partly a review of the current state-of-the-art, and partly a discussion of future work that is needed. It should benefit both novice and expert Monte Carlo developers and users. In each of the topic areas, we provide an overview of needs, perspective on past and current methods, a review of recent work, and discussion of further research and capabilities that are required. Electronic copies of all workshop presentations and material will be available. The workshop is structured as 2 morning and 2 afternoon segments: - Criticality Calculations I - convergence diagnostics, acceleration methods, confidence intervals, and the iterated fission probability, - Criticality Calculations II - reactor kinetics parameters, dominance ratio, temperature

  1. Stenocercus doellojuradoi (Iguanidae, Liolaeminae): una nueva especie para la provincia de San Juan, Argentina

    OpenAIRE

    Laspiur, Alejandro; Acosta, Juan Carlos

    2006-01-01

    República Argentina, Provincia de San Juan, Depto. Valle Fértil, 3 km al norte de la localidad de Las Tumanas sobre la Ruta Provincial 510 (30°52’ S, 67°20’ W). COLECTOR: Alejandro Laspiur. FECHA: 25 /02/ 2006. MATERIAL DE REFERENCIA: Instituto y Museo de Ciencias Naturales, Universidad Nacional de San Juan: IMCNUNSJ 3000. Un ejemplar macho (LHC: 54 mm.).

  2. ["Is it an animal inside? "Melanie Klein's unpublished Don Juan Paper (1939)].

    Science.gov (United States)

    Frank, Claudia

    2008-01-01

    Klein had been asked to contribute an article to the birthday number of the International Journal for Jones. The author outlines how she hurriedly wrote a text about Don Juan which, however, was rejected by the editor. Essential parts of it are presented in German translation. The manuscript is discussed in the context of Klein's published work as well as of the relevant contemporary literature. In Klein's view, Don Juan's genitality is determined by oral impulses and fears. By his manic acting out he attempts to ward off a depressive break-down. The paper ends with some reflections about why Klein--ontrary to her intention--failed to revise her manuscript for later publication.

  3. Juan Puma, el hijo del oso. Cuento quechua de La Jalca, Chachapoyas

    Directory of Open Access Journals (Sweden)

    1997-01-01

    Full Text Available JUAN PUMA, LE FILS DE L'OURS . CONTE QUECHUA DE LA JALCA, CHACHAPOYAS. Une des fêtes les plus importantes de la communauté de La Jalca, Province de Chachapoyas, Amazonas, est celle de la Saint-Pierre où l’on exécute une danse de l’ours très semblable à celle des ukukus du sud péruvien. Le narrateur du récit que nous publions ici assimile ce rite à l’histoire de Juan Oso (Jean de l’Ours très connue dans le monde andin. L’importance de l’ours dans cette culture des hautes terres amazoniennes est fondamentale. En quechua local, l’ours s’appelle “puma” et partage avec le puma de la forêt les caractéristiques de puissance effrayante et de pouvoirs surnaturels. Le fils de l’ours, Juan, évoque les relations ambiguës liant les “chrétiens” des hautes terres d’Amazonas et les “sauvages” de la forêt. Una de las fiestas más importantes de la comunidad de La Jalca, Provincia de Chachapoyas, Amazonas, es la de San Pedro en la que se representa un baile del oso muy semejante al baile de los ukukus del sur peruano. El narrador del cuento que publicamos aquí asimila este rito a la historia de Juan Oso, muy conocido en el mundo andino. La importancia del oso en esta cultura de la ceja de selva alta es fundamental. En quechua local, el oso se llama “puma” y comparte con el puma de la selva las características de fuerza temible y poderes sobrenaturales. El hijo del oso, Juan, evoca las relaciones ambiguas existentes entre los “cristianos” de la serranía de Amazonas y los “chunchos” de la selva. JUAN PUMA, THE BEAR'S SON. A QUECHUA TALE FROM LA JALCA, CHACHAPOYAS. One of the most important feasts of the community of La Jalca, Province of Amazonas, is that of Saint Peter in which a bear dance similar to the southern Peruvian dance of the ukukus is performed. In the story published here, the narrator assimilates this rite with the tale of Juan Oso, another story which is well known throughout the Andes. The importance of bears

  4. Juan Valdez la estrategia detrás de la marca

    Directory of Open Access Journals (Sweden)

    Ana María Parente

    2017-10-01

    Full Text Available El libro Juan Valdez, la estrategia detrás de la marca busca explicar la táctica de valorización del café colombiano desarrollada por la Federación Nacional de Cafeteros (FNC, que tiene como principal objetivo beneficiar a los caficultores colombianos a lo largo de la cadena de valor. Para ello, el texto hace un recuento del contexto del mercado cafetero mundial, haciendo énfasis en los principales proveedores y consumidores hasta finalmente centrarse en la construcción de la marca Café de Colombia® y Juan Valdez® como estrategias para darle competitividad al grano colombiano.

  5. (U) Introduction to Monte Carlo Methods

    Energy Technology Data Exchange (ETDEWEB)

    Hungerford, Aimee L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-03-20

    Monte Carlo methods are very valuable for representing solutions to particle transport problems. Here we describe a “cook book” approach to handling the terms in a transport equation using Monte Carlo methods. Focus is on the mechanics of a numerical Monte Carlo code, rather than the mathematical foundations of the method.

  6. Visit of His Excellency Mr Juan Martabit, Ambassador, Permanent Representative of Chile to the United Nations Office in Geneva and other international organisations in Switzerland.

    CERN Multimedia

    Maximilien Brice

    2005-01-01

    Secretary-General; Mrs Juan Martabit. 0502017_07.jpg His Excellency Mr Juan Martabit, Ambassador,Permanent Representative of Chile to the United Nations Office in Geneva and other international organisations in Switzerland visiting the ATLAS building site. From left to right: Prof. Giora Mikenberg, ATLAS Collaboration; Mr Maximilian Metzger, Secretary-General and His Excellency Mr Juan Martabit. 0502017_08.jpg His Excellency Mr Juan Martabit, Ambassador,Permanent Representative of Chile to the United Nations Office in Geneva and other international organisations in Switzerland visiting the ATLAS cavern. From left to right: From left to right: Prof. Giora Mikenberg, ATLAS Collaboration; Mr Maximilian Metzger, Secretary-General; His Excellency Mr Juan Martabit and Mrs Juan Martabit.

  7. Review and analysis of mammographies of Servicio de Radiologia Hospital San Juan de Dios

    International Nuclear Information System (INIS)

    Araya Cerdas, Adrian; Mirambell Sanchez, Melania; Monge Vega, Mandred; Mora Vargas, Karla; Vega Aguilar, Laura

    2013-01-01

    The concept of mammography is defined. The mammography has been estimated as the best tool currently available for the detection of breast cancer in its early stages, in addition, have been detected clinically occult lesions. Mammographies of the Servicio de Radiologia Hospital San Juan de Dios were analyzed for a total of 1250. The findings were related as static between BIRADS categorization and inherited-family factors, geographical and personal pathological of patients treated in the period September 2012 to January 2013 [es

  8. Impacts of Urbanization in the Coastal Tropical City of San Juan, Puerto Rico

    Science.gov (United States)

    Comarazamy, Daniel E.; Gonzalez, Jorge E.; Luvall, Jeffrey C.; Rickman, Douglass

    2007-01-01

    Urban sprawl in tropical locations is rapidly accelerating and it is more evident in islands where a large percentage of the population resides along the coasts. This paper focuses on the analysis of the impacts of land use and land cover for urbanization in the tropical coastal city of San Juan, in the Caribbean island of Puerto Rico. A mesoscale numerical model, the Regional Atmospheric Modeling System (RAMS), is used to study the impacts of land use for urbanization in the environment including specific characteristics of the urban heat island in the San Juan Metropolitan Area (SJMA), one of the most noticeable urban cores of the Caribbean. The research also makes use of the observations obtained during the airborne San Juan Atlas Mission. Surface and raw insonde data from the mission are used to validate the atmospheric model yielding satisfactory results. Airborne high resolution remote sensing data are used to update the model's surface characteristics in order to obtain a more accurate and detailed configuration of the SJMA and perform a climate impact analysis based on land cover/land use (LCLU) changes. The impact analysis showed that the presence of the urban landscape of San Juan has an impact reflected in higher air temperatures over the area occupied by the city, with positive values of up to 2.5 degrees C, for the simulations that have specified urban LCLU indexes in the model's bottom boundary. One interesting result of the impact analysis was the finding of a precipitation disturbance shown as a difference in total accumulated rainfall between the present urban landscape and with a potential natural vegetation, apparently induced by the presence of the urban area. Results indicate that the urban-enhanced cloud formation and precipitation development occur mainly downwind of the city, including the accumulated precipitation. This spatial pattern can be explained by the presence of a larger urbanized area in the southwest sector of the city, and of

  9. REMOTE SENSING OF THE SEDIMENTATION PLUME OF THE RIVER SAN JUAN

    OpenAIRE

    Ballestero, Daniel

    2004-01-01

    The River San Juan (RSJ), in the border between Nicaragua and Costa Rica, is one the major rivers in Central America and drains the largest basin in the region (38570 km²) in terms of volume. Extending from Lago Cicibolca to the Caribbean Sea, the RSJ is an important source of freshwater, sediments, nutrients and pollutants to the continental shelf. Ecosystems degradation, contamination of water bodies and overexploitation of natural resources, particularly deforestation in the southern part ...

  10. The paradigm of paraglacial megafans of the San Juan river basin, Central Andes, Argentina

    Science.gov (United States)

    Suvires, Graciela M.

    2014-11-01

    The spatial distribution and several morphometric characteristics of the Quaternary alluvial fans of the San Juan River, in the province of San Juan, at the Central and Western part of Argentina, have been studied to classify them as paraglacial megafans, as well to ratify its depositional environmental conditions. The high sedimentary load exported by San Juan river from the Central Andes to the foreland depressions is estimated about 3,682,200 hm3. The large alluvial fans of Ullum-Zonda and Tulum valleys were deposited into deep tectonic depressions, during the Upper Pleistocene deglaciation stages. The outcome of collecting remotely sensed data, map and DEM data, geophysical data and much fieldwork gave access to morphometric, morphographic and morphogenetic data of these alluvial fans. The main drainage network was mapped on processed images using QGis (vers.2.0.1). Several fan morphometric parameters were measured, such as the size, the shape, the thickness, the surface areas and the sedimentary volume of exported load. The analyzed fans were accumulated in deep tectonic depressions, where the alluvium fill reaches 700 to 1200 m thick. Such fans do not reach the large size that other world megafans have, and this is due to tectonic obstacles, although the sedimentary fill average volume surpasses 514,000 hm3. The author proposes to consider Ullum-Zonda and Tulum alluvial fans as paraglacial megafans. According to the stratigraphic relationships of the tropical South American Rivers, the author considers that the San Juan paraglacial megafans would have occurred in the period before 24 ka BP , possibly corresponding to Middle Pleniglacial (ca 65-24ka BP). They record colder and more humid conditions compared with the present arid and dry conditions.

  11. Juan Ruiz De Alarcón: Impairment as Empowerment in Early Modern Spain

    Science.gov (United States)

    Clark, Gloria Bodtorf

    2016-01-01

    Juan Ruiz de Alarcón, a seventeenth-century writer and native of New Spain, so excelled at the craft of writing "comedias" that he is recognized as one of the great writers of early modern Spain. In his personal life Ruiz de Alarcón struggled with a significant bodily impairment, a large hump on both his back and front, which made him…

  12. Riparian Communities along Longitudinal Gradients in Mexico's Northeastern San Juan River

    OpenAIRE

    Guerra, San Juana; Lizárraga-Mendiola, Liliana; Návar, José

    2016-01-01

    Abstract: This research was conducted in three major tributaries of Mexico's northeast San Juan River with the major objectives of: (a) describing the diversity-abundance of riparian trees, benthic insects and fish faunal communities and (b) associating the fish and benthic insect communities to riparian tree communities, flow quality, and discharge parameters along a longitudinal gradient of water stress. Regardless of the high spatial variability, two gradients could be identified using mul...

  13. Reflections on Don Juan and on the utility of the unhappy love affair.

    Science.gov (United States)

    Bergel, Ernest

    2011-12-01

    Based on an unusual clinical experience of a teenage boy in child psychotherapy, two conclusions are proposed: (1) that the extremely unhappy, early love affairs that occur in most men's lives serve a valuable function in helping them separate from their mothers sufficiently to be able to realistically relate to appropriate marriage partners, and (2) that some Don Juans start new relationships in order to break them off, rather than the reverse.

  14. Assessing Climate Variability Effects on Dengue Incidence in San Juan, Puerto Rico

    Directory of Open Access Journals (Sweden)

    Pablo Méndez-Lázaro

    2014-09-01

    Full Text Available We test the hypothesis that climate and environmental conditions are becoming favorable for dengue transmission in San Juan, Puerto Rico. Sea Level Pressure (SLP, Mean Sea Level (MSL, Wind, Sea Surface Temperature (SST, Air Surface Temperature (AST, Rainfall, and confirmed dengue cases were analyzed. We evaluated the dengue incidence and environmental data with Principal Component Analysis, Pearson correlation coefficient, Mann-Kendall trend test and logistic regressions. Results indicated that dry days are increasing and wet days are decreasing. MSL is increasing, posing higher risk of dengue as the perimeter of the San Juan Bay estuary expands and shorelines move inland. Warming is evident with both SST and AST. Maximum and minimum air surface temperature extremes have increased. Between 1992 and 2011, dengue transmission increased by a factor of 3.4 (95% CI: 1.9–6.1 for each 1 °C increase in SST. For the period 2007–2011 alone, dengue incidence reached a factor of 5.2 (95% CI: 1.9–13.9 for each 1 °C increase in SST. Teenagers are consistently the age group that suffers the most infections in San Juan. Results help understand possible impacts of different climate change scenarios in planning for social adaptation and public health interventions.

  15. Cuadros de Juan del Castillo y Antonio del Castillo en el Ermitage

    Directory of Open Access Journals (Sweden)

    Kagané, L.

    2003-06-01

    Full Text Available Juan del Castillo y Antonio del Castillo son dos pintores que trabajaron en Andalucía. Hace algún tiempo se consideraba que Antonio era el sobrino de Juan, actualmente es sabido que no es así, aunque no se excluye que fuesen parientes. Al ingresar los cuadros de estos pintores en el Ermitage tuvo lugar una confusión debida al parecido de sus apellidos y las obras de uno de ellos se atribuían en los inventarios al otro. Así ocurrió con el pequeño cuadro Visitación (Fig. 1. Fue adquirido en 1834 a Juan Miguel Páez de la Cadena, embajador de España en San Petersburgo, e incluido en el catálogo manuscrito del museo sin haber indicado el nombre. En el Livret y en todos los posteriores catálogos del Ermitage de antes de la revolución, el cuadro fue asignado bajo el nombre de Antonio del Castillo…

  16. Assessing Climate Variability Effects on Dengue Incidence in San Juan, Puerto Rico

    Science.gov (United States)

    Méndez-Lázaro, Pablo; Muller-Karger, Frank E.; Otis, Daniel; McCarthy, Matthew J.; Peña-Orellana, Marisol

    2014-01-01

    We test the hypothesis that climate and environmental conditions are becoming favorable for dengue transmission in San Juan, Puerto Rico. Sea Level Pressure (SLP), Mean Sea Level (MSL), Wind, Sea Surface Temperature (SST), Air Surface Temperature (AST), Rainfall, and confirmed dengue cases were analyzed. We evaluated the dengue incidence and environmental data with Principal Component Analysis, Pearson correlation coefficient, Mann-Kendall trend test and logistic regressions. Results indicated that dry days are increasing and wet days are decreasing. MSL is increasing, posing higher risk of dengue as the perimeter of the San Juan Bay estuary expands and shorelines move inland. Warming is evident with both SST and AST. Maximum and minimum air surface temperature extremes have increased. Between 1992 and 2011, dengue transmission increased by a factor of 3.4 (95% CI: 1.9–6.1) for each 1 °C increase in SST. For the period 2007–2011 alone, dengue incidence reached a factor of 5.2 (95% CI: 1.9–13.9) for each 1 °C increase in SST. Teenagers are consistently the age group that suffers the most infections in San Juan. Results help understand possible impacts of different climate change scenarios in planning for social adaptation and public health interventions. PMID:25216253

  17. Illegal drug use and its correlates in San Juan, Puerto Rico.

    Science.gov (United States)

    Caetano, Raul; Vaeth, Patrice A C; Canino, Glorisa

    2018-04-01

    Data on the prevalence and correlates of illegal drug use in Puerto Rico are now almost 20 years old. This study sought to estimate the 12-month prevalence of illegal and non-prescribed medical drug use in San Juan, Puerto Rico and identify sociodemographic correlates of use. Data are from a random household sample of 1510 individuals, 18-64 years of age in San Juan, Puerto Rico. The 12-month prevalence of any illegal or non-prescribed drug use was 16.5%. Prevalence among men (20.7%) was higher than among women (12.9%; chi 2  = 16.308; df = 1; p  .05) were negatively associated with drug use compared to annual income up to $10,000. As in many other places in the U.S., drug use in San Juan, Puerto Rico is high, affecting about 1 in 6 adults in the population. The highest prevalence is for marijuana use, which cannot be medically prescribed and of which recreational use is illegal on the island. Copyright © 2018 Elsevier B.V. All rights reserved.

  18. Carbon Isotopic tests on the Origins of the Shuram Anomaly from the San Juan Fm., Peru

    Science.gov (United States)

    Hodgin, E. B.

    2015-12-01

    Carbon isotope anomalies are associated with perturbations to the carbon cycle that offer insight into the geochemical evolution of the Earth. The largest Carbon isotope anomaly in earth history is the Shuram, which remains poorly understood in spite of being linked to the oxygenation of earth, the rise of metazoans, and a complete reorganization of the carbon cycle. From a basin transect of the carbonate-dominated San Juan Formation in southern Peru, we present evidence for the first clear example of the Shuram isotope anomaly in South America. Unique to this succession are ~140 meters of organic-rich black shale within the anomaly, containing as much as 4% TOC. Preliminary data from the organic-rich black shales of the San Juan Fm. confirm that δ13Corg is relatively invariant and does not covary with δ13Ccarb. These observations are consistent with other Shuram sections and support various models: an exogenous carbon source, an enlarged dissolved organic carbon pool, as well as authigenic carbonate production in organic-rich anoxic sediments. Critical tests of these models have been complicated by a paucity of organics in Shuram facies worldwide. Further analyses of the robust organics from the Shuram facies of the San Juan Fm. therefore hold promise in shedding light on the origin of the Shuram isotope anomaly and critical earth history events to which it has been linked.

  19. Juan de Fuca slab geometry and its relation to Wadati-Benioff zone seismicity

    Science.gov (United States)

    McCrory, Patricia A.; Blair, J. Luke; Waldhause, Felix; Oppenheimer, David H.

    2012-01-01

    A new model of the subducted Juan de Fuca plate beneath western North America allows first-order correlations between the occurrence of Wadati-Benioff zone earthquakes and slab geometry, temperature, and hydration state. The geo-referenced 3D model, constructed from weighted control points, integrates depth information from earthquake locations and regional seismic velocity studies. We use the model to separate earthquakes that occur in the Cascadia forearc from those that occur within the underlying Juan de Fuca plate and thereby reveal previously obscured details regarding the spatial distribution of earthquakes. Seismicity within the slab is most prevalent where the slab is warped beneath northwestern California and western Washington suggesting that slab flexure, in addition to expected metamorphic dehydration processes, promotes earthquake occurrence within the subducted oceanic plate. Earthquake patterns beneath western Vancouver Island are consistent with slab dehydration processes. Conversely, the lack of slab earthquakes beneath western Oregon is consistent with an anhydrous slab. Double-differenced relocated seismicity resolves a double seismic zone within the slab beneath northwestern California that strongly constrains the location of the plate interface and delineates a cluster of seismicity 10 km above the surface that includes the 1992 M7.1 Mendocino earthquake. We infer that this earthquake ruptured a surface within the Cascadia accretionary margin above the Juan de Fuca plate. We further speculate that this earthquake is associated with a detached fragment of former Farallon plate. Other subsurface tectonic elements within the forearc may have the potential to generate similar damaging earthquakes.

  20. Pensamiento de un Ilustrado español. Juan Bautista Virio

    Directory of Open Access Journals (Sweden)

    Emilio DÍAZ DE LA GUARDIA BUENO

    2010-03-01

    Full Text Available RESUMEN: Juan Bautista Virio es por su educación y los años en que vivió una figura importante de la ilustración española. Al pertenecer a una familia acomodada pudo recibir una esmerada educación que incluía el conocimiento de varias lenguas. Como persona cultivada conoció las obras de los principales intelectuales de su época y como funcionario del Ministerio del Estado estuvo en contacto con muchos de los políticos reformistas e ilustrados de la segunda mitad del siglo XVIII. El mismo disfrutó de la confianza del conde Floridablanca que le encomendó diversas comisiones oficiales entre 1788 y 1790 aunque su relación personal se inició un año antes cuando Floridablanca estudió algunos de sus trabajos que, por otra parte, merecieron el aplauso de Godoy y Urquijo. Pero, también estuvo en contacto con otros muchos políticos y sobre todo diplomáticos que le apoyaron en sus primeros pasos en la administración como José de Anduaga, el marqués de Mahoni, Bernardo del Campo, etc; y mantuvo una estrecha amistad con otros ilustrados como Juan Antonio Melón, Diego María Gardoqui, Domingo García Fernández, Juan Pablo Forner, Francisco Ventura, etc.

  1. The silent Don Juan. The concepts of love and art in the works of Max Frisch

    Directory of Open Access Journals (Sweden)

    Špela Virant

    2012-07-01

    Full Text Available In the novel Stiller and in the play Don Juan, both published in the early 1950s, Frisch already focuses on the problem of identity as one of his major themes, but it is not yet situated in a political context as, for example, in the play Andorra. In these works, the identity-problem is situated in the domain of intimate relationships and artistic creativity, offering the possibility to discuss Frisch’s concepts of art and love, which unfold through Frisch’s treatment of the traditional literary figure of Don Juan and his hubris. Frisch’s Stiller and Don Juan do not believe in God; but their frame of mind stays the same, while the position of God and his attributes are assigned to love, art and geometry. Although both literary figures in the course of events realize that this substitution is a mistake, they are unable to alter their concepts of love and art. Instead of altering the concepts, they rather resign in silence, while Max Frisch continues to search for alternatives in reflecting on the process of fictionalization and in developing innovative narrative and dramatic structures.

  2. A propósito de unas versiones de La Sagrada Familia con los santos «Juanitos» de Juan de Juanes

    Directory of Open Access Journals (Sweden)

    Mateo Gómez, Isabel

    2002-03-01

    Full Text Available Desde el año 1961 consta en el Archivo fotográfico del Instituto Amatller de Barcelona una Sagrada Familia con los santos «Juanitos» (fig. 1, en colección privada madrileña. Un año después, José Luis Alonso Misol la publicó en un artículo sobre Pintura española en colecciones madrileñas, aportando el nombre del coleccionista, Sr. Fernández López, y destacando que se trataba de una de las mejores obras de Juan de Juanes, de la que hay otras versiones con algunas variantes, poniendo como ejemplo de ellas la de la Academia de San Fernando (fig. 3. En esta línea podría considerarse la pintada por Nicolás Borras (fig. 4, de la colección Grases de Barcelona donde se encontraba en 1916, y en la que se advierten ambas influencias.…

  3. Isotopic depletion with Monte Carlo

    International Nuclear Information System (INIS)

    Martin, W.R.; Rathkopf, J.A.

    1996-06-01

    This work considers a method to deplete isotopes during a time- dependent Monte Carlo simulation of an evolving system. The method is based on explicitly combining a conventional estimator for the scalar flux with the analytical solutions to the isotopic depletion equations. There are no auxiliary calculations; the method is an integral part of the Monte Carlo calculation. The method eliminates negative densities and reduces the variance in the estimates for the isotope densities, compared to existing methods. Moreover, existing methods are shown to be special cases of the general method described in this work, as they can be derived by combining a high variance estimator for the scalar flux with a low-order approximation to the analytical solution to the depletion equation

  4. Monte Carlo Methods in ICF

    Science.gov (United States)

    Zimmerman, George B.

    Monte Carlo methods appropriate to simulate the transport of x-rays, neutrons, ions and electrons in Inertial Confinement Fusion targets are described and analyzed. The Implicit Monte Carlo method of x-ray transport handles symmetry within indirect drive ICF hohlraums well, but can be improved 50X in efficiency by angular biasing the x-rays towards the fuel capsule. Accurate simulation of thermonuclear burn and burn diagnostics involves detailed particle source spectra, charged particle ranges, inflight reaction kinematics, corrections for bulk and thermal Doppler effects and variance reduction to obtain adequate statistics for rare events. It is found that the effects of angular Coulomb scattering must be included in models of charged particle transport through heterogeneous materials.

  5. Monte Carlo methods in ICF

    International Nuclear Information System (INIS)

    Zimmerman, G.B.

    1997-01-01

    Monte Carlo methods appropriate to simulate the transport of x-rays, neutrons, ions and electrons in Inertial Confinement Fusion targets are described and analyzed. The Implicit Monte Carlo method of x-ray transport handles symmetry within indirect drive ICF hohlraums well, but can be improved 50X in efficiency by angular biasing the x-rays towards the fuel capsule. Accurate simulation of thermonuclear burn and burn diagnostics involves detailed particle source spectra, charged particle ranges, inflight reaction kinematics, corrections for bulk and thermal Doppler effects and variance reduction to obtain adequate statistics for rare events. It is found that the effects of angular Coulomb scattering must be included in models of charged particle transport through heterogeneous materials. copyright 1997 American Institute of Physics

  6. Monte Carlo methods in ICF

    International Nuclear Information System (INIS)

    Zimmerman, George B.

    1997-01-01

    Monte Carlo methods appropriate to simulate the transport of x-rays, neutrons, ions and electrons in Inertial Confinement Fusion targets are described and analyzed. The Implicit Monte Carlo method of x-ray transport handles symmetry within indirect drive ICF hohlraums well, but can be improved 50X in efficiency by angular biasing the x-rays towards the fuel capsule. Accurate simulation of thermonuclear burn and burn diagnostics involves detailed particle source spectra, charged particle ranges, inflight reaction kinematics, corrections for bulk and thermal Doppler effects and variance reduction to obtain adequate statistics for rare events. It is found that the effects of angular Coulomb scattering must be included in models of charged particle transport through heterogeneous materials

  7. Shell model Monte Carlo methods

    International Nuclear Information System (INIS)

    Koonin, S.E.; Dean, D.J.; Langanke, K.

    1997-01-01

    We review quantum Monte Carlo methods for dealing with large shell model problems. These methods reduce the imaginary-time many-body evolution operator to a coherent superposition of one-body evolutions in fluctuating one-body fields; the resultant path integral is evaluated stochastically. We first discuss the motivation, formalism, and implementation of such Shell Model Monte Carlo (SMMC) methods. There then follows a sampler of results and insights obtained from a number of applications. These include the ground state and thermal properties of pf-shell nuclei, the thermal and rotational behavior of rare-earth and γ-soft nuclei, and the calculation of double beta-decay matrix elements. Finally, prospects for further progress in such calculations are discussed. (orig.)

  8. A contribution Monte Carlo method

    International Nuclear Information System (INIS)

    Aboughantous, C.H.

    1994-01-01

    A Contribution Monte Carlo method is developed and successfully applied to a sample deep-penetration shielding problem. The random walk is simulated in most of its parts as in conventional Monte Carlo methods. The probability density functions (pdf's) are expressed in terms of spherical harmonics and are continuous functions in direction cosine and azimuthal angle variables as well as in position coordinates; the energy is discretized in the multigroup approximation. The transport pdf is an unusual exponential kernel strongly dependent on the incident and emergent directions and energies and on the position of the collision site. The method produces the same results obtained with the deterministic method with a very small standard deviation, with as little as 1,000 Contribution particles in both analog and nonabsorption biasing modes and with only a few minutes CPU time

  9. Shell model Monte Carlo methods

    International Nuclear Information System (INIS)

    Koonin, S.E.

    1996-01-01

    We review quantum Monte Carlo methods for dealing with large shell model problems. These methods reduce the imaginary-time many-body evolution operator to a coherent superposition of one-body evolutions in fluctuating one-body fields; resultant path integral is evaluated stochastically. We first discuss the motivation, formalism, and implementation of such Shell Model Monte Carlo methods. There then follows a sampler of results and insights obtained from a number of applications. These include the ground state and thermal properties of pf-shell nuclei, thermal behavior of γ-soft nuclei, and calculation of double beta-decay matrix elements. Finally, prospects for further progress in such calculations are discussed. 87 refs

  10. Parallel Monte Carlo reactor neutronics

    International Nuclear Information System (INIS)

    Blomquist, R.N.; Brown, F.B.

    1994-01-01

    The issues affecting implementation of parallel algorithms for large-scale engineering Monte Carlo neutron transport simulations are discussed. For nuclear reactor calculations, these include load balancing, recoding effort, reproducibility, domain decomposition techniques, I/O minimization, and strategies for different parallel architectures. Two codes were parallelized and tested for performance. The architectures employed include SIMD, MIMD-distributed memory, and workstation network with uneven interactive load. Speedups linear with the number of nodes were achieved

  11. Elements of Monte Carlo techniques

    International Nuclear Information System (INIS)

    Nagarajan, P.S.

    2000-01-01

    The Monte Carlo method is essentially mimicking the real world physical processes at the microscopic level. With the incredible increase in computing speeds and ever decreasing computing costs, there is widespread use of the method for practical problems. The method is used in calculating algorithm-generated sequences known as pseudo random sequence (prs)., probability density function (pdf), test for randomness, extension to multidimensional integration etc

  12. Adaptive Multilevel Monte Carlo Simulation

    KAUST Repository

    Hoel, H

    2011-08-23

    This work generalizes a multilevel forward Euler Monte Carlo method introduced in Michael B. Giles. (Michael Giles. Oper. Res. 56(3):607–617, 2008.) for the approximation of expected values depending on the solution to an Itô stochastic differential equation. The work (Michael Giles. Oper. Res. 56(3):607– 617, 2008.) proposed and analyzed a forward Euler multilevelMonte Carlo method based on a hierarchy of uniform time discretizations and control variates to reduce the computational effort required by a standard, single level, Forward Euler Monte Carlo method. This work introduces an adaptive hierarchy of non uniform time discretizations, generated by an adaptive algorithmintroduced in (AnnaDzougoutov et al. Raùl Tempone. Adaptive Monte Carlo algorithms for stopped diffusion. In Multiscale methods in science and engineering, volume 44 of Lect. Notes Comput. Sci. Eng., pages 59–88. Springer, Berlin, 2005; Kyoung-Sook Moon et al. Stoch. Anal. Appl. 23(3):511–558, 2005; Kyoung-Sook Moon et al. An adaptive algorithm for ordinary, stochastic and partial differential equations. In Recent advances in adaptive computation, volume 383 of Contemp. Math., pages 325–343. Amer. Math. Soc., Providence, RI, 2005.). This form of the adaptive algorithm generates stochastic, path dependent, time steps and is based on a posteriori error expansions first developed in (Anders Szepessy et al. Comm. Pure Appl. Math. 54(10):1169– 1214, 2001). Our numerical results for a stopped diffusion problem, exhibit savings in the computational cost to achieve an accuracy of ϑ(TOL),from(TOL−3), from using a single level version of the adaptive algorithm to ϑ(((TOL−1)log(TOL))2).

  13. Geometrical splitting in Monte Carlo

    International Nuclear Information System (INIS)

    Dubi, A.; Elperin, T.; Dudziak, D.J.

    1982-01-01

    A statistical model is presented by which a direct statistical approach yielded an analytic expression for the second moment, the variance ratio, and the benefit function in a model of an n surface-splitting Monte Carlo game. In addition to the insight into the dependence of the second moment on the splitting parameters the main importance of the expressions developed lies in their potential to become a basis for in-code optimization of splitting through a general algorithm. Refs

  14. Extending canonical Monte Carlo methods

    International Nuclear Information System (INIS)

    Velazquez, L; Curilef, S

    2010-01-01

    In this paper, we discuss the implications of a recently obtained equilibrium fluctuation-dissipation relation for the extension of the available Monte Carlo methods on the basis of the consideration of the Gibbs canonical ensemble to account for the existence of an anomalous regime with negative heat capacities C α with α≈0.2 for the particular case of the 2D ten-state Potts model

  15. Non statistical Monte-Carlo

    International Nuclear Information System (INIS)

    Mercier, B.

    1985-04-01

    We have shown that the transport equation can be solved with particles, like the Monte-Carlo method, but without random numbers. In the Monte-Carlo method, particles are created from the source, and are followed from collision to collision until either they are absorbed or they leave the spatial domain. In our method, particles are created from the original source, with a variable weight taking into account both collision and absorption. These particles are followed until they leave the spatial domain, and we use them to determine a first collision source. Another set of particles is then created from this first collision source, and tracked to determine a second collision source, and so on. This process introduces an approximation which does not exist in the Monte-Carlo method. However, we have analyzed the effect of this approximation, and shown that it can be limited. Our method is deterministic, gives reproducible results. Furthermore, when extra accuracy is needed in some region, it is easier to get more particles to go there. It has the same kind of applications: rather problems where streaming is dominant than collision dominated problems

  16. BREM5 electroweak Monte Carlo

    International Nuclear Information System (INIS)

    Kennedy, D.C. II.

    1987-01-01

    This is an update on the progress of the BREMMUS Monte Carlo simulator, particularly in its current incarnation, BREM5. The present report is intended only as a follow-up to the Mark II/Granlibakken proceedings, and those proceedings should be consulted for a complete description of the capabilities and goals of the BREMMUS program. The new BREM5 program improves on the previous version of BREMMUS, BREM2, in a number of important ways. In BREM2, the internal loop (oblique) corrections were not treated in consistent fashion, a deficiency that led to renormalization scheme-dependence; i.e., physical results, such as cross sections, were dependent on the method used to eliminate infinities from the theory. Of course, this problem cannot be tolerated in a Monte Carlo designed for experimental use. BREM5 incorporates a new way of treating the oblique corrections, as explained in the Granlibakken proceedings, that guarantees renormalization scheme-independence and dramatically simplifies the organization and calculation of radiative corrections. This technique is to be presented in full detail in a forthcoming paper. BREM5 is, at this point, the only Monte Carlo to contain the entire set of one-loop corrections to electroweak four-fermion processes and renormalization scheme-independence. 3 figures

  17. Statistical implications in Monte Carlo depletions - 051

    International Nuclear Information System (INIS)

    Zhiwen, Xu; Rhodes, J.; Smith, K.

    2010-01-01

    As a result of steady advances of computer power, continuous-energy Monte Carlo depletion analysis is attracting considerable attention for reactor burnup calculations. The typical Monte Carlo analysis is set up as a combination of a Monte Carlo neutron transport solver and a fuel burnup solver. Note that the burnup solver is a deterministic module. The statistical errors in Monte Carlo solutions are introduced into nuclide number densities and propagated along fuel burnup. This paper is towards the understanding of the statistical implications in Monte Carlo depletions, including both statistical bias and statistical variations in depleted fuel number densities. The deterministic Studsvik lattice physics code, CASMO-5, is modified to model the Monte Carlo depletion. The statistical bias in depleted number densities is found to be negligible compared to its statistical variations, which, in turn, demonstrates the correctness of the Monte Carlo depletion method. Meanwhile, the statistical variation in number densities generally increases with burnup. Several possible ways of reducing the statistical errors are discussed: 1) to increase the number of individual Monte Carlo histories; 2) to increase the number of time steps; 3) to run additional independent Monte Carlo depletion cases. Finally, a new Monte Carlo depletion methodology, called the batch depletion method, is proposed, which consists of performing a set of independent Monte Carlo depletions and is thus capable of estimating the overall statistical errors including both the local statistical error and the propagated statistical error. (authors)

  18. The Literary Criticism and Memoirs of Juan Ramón Jiménez

    Directory of Open Access Journals (Sweden)

    Allen W. Phillips

    1983-01-01

    Full Text Available Equally as demanding of others as he was of himself, Juan Ramón Jiménez conceived of literary criticism as a serious and exacting task. The critic and the poet, standing side by side, are devoted to complementary activities of mutual enrichment. However fragmentary and partial the critical opinions of Juan Ramón may be (also outspoken and polemical in nature, they are invaluable as a personal historical and aesthetic guide to about fifty or sixty years of Hispanic literary development (1900-1960. Not to take them into account is to fail to recognize a highly important aspect of his total artistic personality. These varied critical texts are a product of a first rate intelligence and the sensibility of a writer of consummate discrimination who was endowed not only with an excellent memory but also a very special talent for appreciating the authentic. Juan Ramón as a critic is quick to praise (San Juan, Bécquer, Dario, Unamuno and Machado and at the same time strong in his censure of certain contemporaries. Several recently collected volumes of miscellaneous critical materials have resolved the bibliographical muddle for the initial study of this fundamental aspect of the poet, but still particularly important are the expressionistic portraits of Españoles de tres mundos , longer tributes to Valle, Ortega and Villaespesa as well as the extensive lectures delivered in his latter years. Examination of these pages gives us an historical and creative overview of the period in which he lived and worked in addition to original considerations about the evolution of Hispanic poetry. Of course, one of the constant focal points of his literary criticism was the modernist epoch of his early days, a movement or attitude which he considered to be a modern twentieth century renaissance. Together with detailed study of these two areas of historical and aesthetic nature, in the ensuing pages some conclusions are pointed out as to the essence of poetry

  19. Hazard evaluation of inorganics, singly and in mixtures, to Flannelmouth Sucker Catostomus latipinnis in the San Juan River, New Mexico

    Science.gov (United States)

    Hamilton, S.J.; Buhl, K.J.

    1997-01-01

    Larval flannelmouth sucker (Catostomus latipinnis) were exposed to arsenate, boron, copper, molybdenum, selenate, selenite, uranium, vanadium, and zinc singly, and to five mixtures of five to nine inorganics. The exposures were conducted in reconstituted water representative of the San Juan River near Shiprock, New Mexico. The mixtures simulated environmental ratios reported for sites along the San Juan River (San Juan River backwater, Fruitland marsh, Hogback East Drain, Mancos River, and McElmo Creek). The rank order of the individual inorganics, from most to least toxic, was: copper > zinc > vanadium > selenite > selenate > arsenate > uranium > boron > molybdenum. All five mixtures exhibited additive toxicity to flannelmouth sucker. In a limited number of tests, 44-day-old and 13-day-old larvae exhibited no difference in sensitivity to three mixtures. Copper was the major toxic component in four mixtures (San Juan backwater, Hogback East Drain, Mancos River, and McElmo Creek), whereas zinc was the major toxic component in the Fruitland marsh mixture, which did not contain copper. The Hogback East Drain was the most toxic mixture tested. Comparison of 96-h LC50values with reported environmental water concentrations from the San Juan River revealed low hazard ratios for arsenic, boron, molybdenum, selenate, selenite, uranium, and vanadium, moderate hazard ratios for zinc and the Fruitland marsh mixture, and high hazard ratios for copper at three sites and four environmental mixtures representing a San Juan backwater, Hogback East Drain, Mancos River, and McElmo Creek. The high hazard ratios suggest that inorganic contaminants could adversely affect larval flannelmouth sucker in the San Juan River at four sites receiving elevated inorganics.

  20. Cuartel San Carlos. Yacimiento veterano

    Directory of Open Access Journals (Sweden)

    Mariana Flores

    2007-01-01

    Full Text Available El Cuartel San Carlos es un monumento histórico nacional (1986 de finales del siglo XVIII (1785-1790, caracterizado por sufrir diversas adversidades en su construcción y soportar los terremotos de 1812 y 1900. En el año 2006, el organismo encargado de su custodia, el Instituto de Patrimonio Cultural del Ministerio de Cultura, ejecutó tres etapas de exploración arqueológica, que abarcaron las áreas Traspatio, Patio Central y las Naves Este y Oeste de la edificación. Este trabajo reseña el análisis de la documentación arqueológica obtenida en el sitio, a partir de la realización de dicho proyecto, denominado EACUSAC (Estudio Arqueológico del Cuartel San Carlos, que representa además, la tercera campaña realizada en el sitio. La importancia de este yacimiento histórico, radica en su participación en los acontecimientos que propiciaron conflictos de poder durante el surgimiento de la República y en los sucesos políticos del siglo XX. De igual manera, se encontró en el sitio una amplia muestra de materiales arqueológicos que reseñan un estilo de vida cotidiana militar, así como las dinámicas sociales internas ocurridas en el San Carlos, como lugar estratégico para la defensa de los diferentes regímenes que atravesó el país, desde la época del imperialismo español hasta nuestros días.

  1. Carlos Battilana: Profesor, Gestor, Amigo

    Directory of Open Access Journals (Sweden)

    José Pacheco

    2009-12-01

    Full Text Available El Comité Editorial de Anales ha perdido a uno de sus miembros más connotados. Brillante docente de nuestra Facultad, Carlos Alberto Battilana Guanilo (1945-2009 supo transmitir los conocimientos y atraer la atención de sus auditorios, de jóvenes estudiantes o de contemporáneos ya no tan jóvenes. Interesó a sus alumnos en la senda de la capacitación permanente y en la investigación. Por otro lado, comprometió a médicos distinguidos a conformar y liderar grupos con interés en la ciencia-amistad. Su vocación docente lo vinculó a facultades de medicina y academias y sociedades científicas, en donde coordinó cursos y congresos de grato recuerdo. Su producción científica la dedicó a la nefrología, inmunología, cáncer, costos en el tratamiento médico. Su capacidad gestora y de liderazgo presente desde su época de estudiante, le permitió llegar a ser director regional de un laboratorio farmacéutico de mucho prestigio, organizar una facultad de medicina y luego tener el cargo de decano de la facultad de ciencias de la salud de dicha universidad privada. Carlos fue elemento importante para que Anales alcanzara un sitial de privilegio entre las revistas biomédicas peruanas. En la semblanza que publicamos tratamos de resumir apretadamente la trayectoria de Carlos Battilana, semanas después de su partida sin retorno.

  2. Monte Carlo Particle Lists: MCPL

    DEFF Research Database (Denmark)

    Kittelmann, Thomas; Klinkby, Esben Bryndt; Bergbäck Knudsen, Erik

    2017-01-01

    A binary format with lists of particle state information, for interchanging particles between various Monte Carlo simulation applications, is presented. Portable C code for file manipulation is made available to the scientific community, along with converters and plugins for several popular...... simulation packages. Program summary: Program Title: MCPL. Program Files doi: http://dx.doi.org/10.17632/cby92vsv5g.1 Licensing provisions: CC0 for core MCPL, see LICENSE file for details. Programming language: C and C++ External routines/libraries: Geant4, MCNP, McStas, McXtrace Nature of problem: Saving...

  3. Luis Carlos López

    Directory of Open Access Journals (Sweden)

    Rafael Maya

    1979-04-01

    Full Text Available Entre los poetasa del Centenario tuvo Luis Carlos López mucha popularidad en el extranjero, desde la publicación de su primer libro. Creo que su obra llamó la atención de filósofos como Unamuno y, si no estoy equivocado, Darío se refirió a ella en términos elogiosos. En Colombia ha sido encomiada hiperbólicamente por algunos, a tiemp que otros no le conceden mayor mérito.

  4. Carbonate microfacies of the San Juan Formation (Ordovician: Oepikodus evae and Oepikodus intermedius conodont zones), Niquivil, Central Precordillera, Province of San Juan (Argentina)

    International Nuclear Information System (INIS)

    Soria, T.; Beresi, M.; Mestre, A.; Heredia, S.; Rodríguez, M.C.

    2017-01-01

    This contribution presents the description and interpretation of carbonate microfacies of the San Juan Formation (Ordovician) at the Niquivil section, considering the stratigraphical interval between the Oepikodus evae and Oepikodus intermedius conodont zones. The distribution of the microfacies and the conodonts assemblages allow us to identify different sub-environments within the late Floian carbonate ramp of the Central Precordillera. Five microfacies were recognized from the base to the top: M1 Bioclastic mudstone-wackestone; M2 Bioclastic-peloidal wackestone; M3 Intra-bioclastic wackestone; M4 Intra-bioclastic packstone; M5 Peloidal grainstone. The vertical distribution of these microfacies indicates a shallowing trend of the carbonate ramp in the Niquivil section for this temporal interval, which suggests a middle ramp environment with low energy, without wave action, and that evolved towards the middle-inner ramp environment with more energy by wave action and development of tempestites. [es

  5. [The examination of men's wits by Juan Huarte de San Juan, and the dawn of the neurobiology of intelligence in the Spanish renaissance].

    Science.gov (United States)

    Martín-Araguz, A; Bustamante-Martínez, C

    The Spanish renaissance doctor Juan Huarte de San Juan (1529-1588) was the author of a unique and immortal work, The Examination of Men's Wits, the edition princeps of which was printed in Baeza in 1575. Since then it has been reprinted at least 80 times and translated into seven languages, which makes it the most influential Spanish contribution to medicine ever published. In this paper we review the unjustly little-known figure of Huarte as the founder of Neuropsychology, and we also analyse his works from a historical and neuroscientific point of view. Huarte's writings deal with the problem of the organic relations between the brain and understanding, and accept the possible influences exerted by temper on the will within the field of the Neurobiology of Intelligence. Thus, over four centuries ago Huarte became the founder of Differential or Physiological Psychology, Neuropsychology, Eugenics and Career Guidance. Huarte's work not only played a fundamental role in the history and development of the body of neuroscientific knowledge, but has also been a clear (although not always cited) influence on scientists, philosophers and men of letters such as Alarcón, Bacon, Cabanis, Cervantes (whose Don Quixote was inspired by him), Charron, Chomsky, Gall, Goethe, Hume, Kant, Kretchmer, Lessing, Lope de Vega, Montaigne, Montesquieu, Nietzsche, Quevedo, Rousseau, Schopenhauer, Thomasius, Tirso de Molina and Ziegler. In the middle of the 16th century, Huarte and his Examination of Men's Wits, together with the works of the naturalist philosophers Gómez Pereira (Antoniana Margarita, 1554) and Miguel Sabuco (New Philosophy, 1587), constituted the prestigious triumvirate of Spanish Renaissance scholars who, for the first time in history, contemplated the workings of the brain from a point of view that had more to do with science than the supernatural.

  6. Monte Carlo techniques in radiation therapy

    CERN Document Server

    Verhaegen, Frank

    2013-01-01

    Modern cancer treatment relies on Monte Carlo simulations to help radiotherapists and clinical physicists better understand and compute radiation dose from imaging devices as well as exploit four-dimensional imaging data. With Monte Carlo-based treatment planning tools now available from commercial vendors, a complete transition to Monte Carlo-based dose calculation methods in radiotherapy could likely take place in the next decade. Monte Carlo Techniques in Radiation Therapy explores the use of Monte Carlo methods for modeling various features of internal and external radiation sources, including light ion beams. The book-the first of its kind-addresses applications of the Monte Carlo particle transport simulation technique in radiation therapy, mainly focusing on external beam radiotherapy and brachytherapy. It presents the mathematical and technical aspects of the methods in particle transport simulations. The book also discusses the modeling of medical linacs and other irradiation devices; issues specific...

  7. Mean field simulation for Monte Carlo integration

    CERN Document Server

    Del Moral, Pierre

    2013-01-01

    In the last three decades, there has been a dramatic increase in the use of interacting particle methods as a powerful tool in real-world applications of Monte Carlo simulation in computational physics, population biology, computer sciences, and statistical machine learning. Ideally suited to parallel and distributed computation, these advanced particle algorithms include nonlinear interacting jump diffusions; quantum, diffusion, and resampled Monte Carlo methods; Feynman-Kac particle models; genetic and evolutionary algorithms; sequential Monte Carlo methods; adaptive and interacting Marko

  8. Monte Carlo surface flux tallies

    International Nuclear Information System (INIS)

    Favorite, Jeffrey A.

    2010-01-01

    Particle fluxes on surfaces are difficult to calculate with Monte Carlo codes because the score requires a division by the surface-crossing angle cosine, and grazing angles lead to inaccuracies. We revisit the standard practice of dividing by half of a cosine 'cutoff' for particles whose surface-crossing cosines are below the cutoff. The theory behind this approximation is sound, but the application of the theory to all possible situations does not account for two implicit assumptions: (1) the grazing band must be symmetric about 0, and (2) a single linear expansion for the angular flux must be applied in the entire grazing band. These assumptions are violated in common circumstances; for example, for separate in-going and out-going flux tallies on internal surfaces, and for out-going flux tallies on external surfaces. In some situations, dividing by two-thirds of the cosine cutoff is more appropriate. If users were able to control both the cosine cutoff and the substitute value, they could use these parameters to make accurate surface flux tallies. The procedure is demonstrated in a test problem in which Monte Carlo surface fluxes in cosine bins are converted to angular fluxes and compared with the results of a discrete ordinates calculation.

  9. Contribución a la iconografía del venerable Juan de Palafox. Una nueva obra firmada de Francisco Bayeu

    Directory of Open Access Journals (Sweden)

    Rincón García, Wifredo

    2010-12-01

    Full Text Available A new painting about the venerable Juan de Palafox, signed by Francisco Bayeu, is here presented. It was probably an oil sketch for an altarpiece.

    Se da a conocer una nueva pintura sobre el venerable Juan de Palafox, firmada, de Francisco Bayeu, posible boceto para un cuadro destinado a un retablo.

  10. Knowledge to serve the city: insights from an emerging knowledge-action network to address vulnerability and sustainability in San Juan, Puerto Rico

    Science.gov (United States)

    T.A. Munoz-Erickson; A.E. Lugo; E. Melendez-Ackerman; L.E. Santiago-Acevedo; J. Seguinot-Barbosa; P. Mendez-Lazaro

    2014-01-01

    This paper presents initial efforts to establish the San Juan Urban Long-Term Research Area Exploratory (ULTRA-Ex), a long-term program aimed at developing transdisciplinary social-ecological system (SES) research to address vulnerability and sustainability for the municipality of San Juan. Transdisciplinary approaches involve the collaborations between researchers,...

  11. Monte Carlo simulations of neutron scattering instruments

    International Nuclear Information System (INIS)

    Aestrand, Per-Olof; Copenhagen Univ.; Lefmann, K.; Nielsen, K.

    2001-01-01

    A Monte Carlo simulation is an important computational tool used in many areas of science and engineering. The use of Monte Carlo techniques for simulating neutron scattering instruments is discussed. The basic ideas, techniques and approximations are presented. Since the construction of a neutron scattering instrument is very expensive, Monte Carlo software used for design of instruments have to be validated and tested extensively. The McStas software was designed with these aspects in mind and some of the basic principles of the McStas software will be discussed. Finally, some future prospects are discussed for using Monte Carlo simulations in optimizing neutron scattering experiments. (R.P.)

  12. Dry Juan de Fuca slab revealed by quantification of water entering Cascadia subduction zone

    Science.gov (United States)

    Canales, J. P.; Carbotte, S. M.; Nedimovic, M. R.; Carton, H. D.

    2017-12-01

    Water is carried by subducting slabs as a pore fluid and in structurally bound minerals, yet no comprehensive quantification of water content and how it is stored and distributed at depth within incoming plates exists for any segment of the global subduction system. Here we use controlled-source seismic data collected in 2012 as part of the Ridge-to-Trench seismic experiment to quantify the amount of pore and structurally bound water in the Juan de Fuca plate entering the Cascadia subduction zone. We use wide-angle OBS seismic data along a 400-km-long margin-parallel profile 10-15 km seaward from the Cascadia deformation front to obtain P-wave tomography models of the sediments, crust, and uppermost mantle, and effective medium theory combined with a stochastic description of crustal properties (e.g., temperature, alteration assemblages, porosity, pore aspect ratio), to analyze the pore fluid and structurally bound water reservoirs in the sediments, crust and lithospheric mantle, and their variations along the Cascadia margin. Our results demonstrate that the Juan de Fuca lower crust and mantle are much drier than at any other subducting plate, with most of the water stored in the sediments and upper crust. Previously documented, variable but limited bend faulting along the margin, which correlates with degree of plate locking, limits slab access to water, and a warm thermal structure resulting from a thick sediment cover and young plate age prevents significant serpentinization of the mantle. Our results have important implications for a number of subduction processes at Cascadia, such as: (1) the dryness of the lower crust and mantle indicates that fluids that facilitate episodic tremor and slip must be sourced from the subducted upper crust; (2) decompression rather than hydrous melting must dominate arc magmatism in northern-central Cascadia; and (3) dry subducted lower crust and mantle can explain the low levels of intermediate-depth seismicity in the Juan de

  13. Marine Biodiversity in Juan Fernández and Desventuradas Islands, Chile: Global Endemism Hotspots.

    Science.gov (United States)

    Friedlander, Alan M; Ballesteros, Enric; Caselle, Jennifer E; Gaymer, Carlos F; Palma, Alvaro T; Petit, Ignacio; Varas, Eduardo; Muñoz Wilson, Alex; Sala, Enric

    2016-01-01

    The Juan Fernández and Desventuradas islands are among the few oceanic islands belonging to Chile. They possess a unique mix of tropical, subtropical, and temperate marine species, and although close to continental South America, elements of the biota have greater affinities with the central and south Pacific owing to the Humboldt Current, which creates a strong biogeographic barrier between these islands and the continent. The Juan Fernández Archipelago has ~700 people, with the major industry being the fishery for the endemic lobster, Jasus frontalis. The Desventuradas Islands are uninhabited except for a small Chilean military garrison on San Félix Island. We compared the marine biodiversity of these islands across multiple taxonomic groups. At San Ambrosio Island (SA), in Desventuradas, the laminarian kelp (Eisenia cokeri), which is limited to Desventuradas in Chile, accounted for >50% of the benthic cover at wave exposed areas, while more sheltered sites were dominated by sea urchin barrens. The benthos at Robinson Crusoe Island (RC), in the Juan Fernández Archipelago, comprised a diverse mix of macroalgae and invertebrates, a number of which are endemic to the region. The biomass of commercially targeted fishes was >2 times higher in remote sites around RC compared to sheltered locations closest to port, and overall biomass was 35% higher around SA compared to RC, likely reflecting fishing effects around RC. The number of endemic fish species was extremely high at both islands, with 87.5% of the species surveyed at RC and 72% at SA consisting of regional endemics. Remarkably, endemics accounted for 99% of the numerical abundance of fishes surveyed at RC and 96% at SA, which is the highest assemblage-level endemism known for any individual marine ecosystem on earth. Our results highlight the uniqueness and global significance of these biodiversity hotspots exposed to very different fishing pressures.

  14. Marine Biodiversity in Juan Fernández and Desventuradas Islands, Chile: Global Endemism Hotspots

    Science.gov (United States)

    Friedlander, Alan M.; Ballesteros, Enric; Caselle, Jennifer E.; Gaymer, Carlos F.; Palma, Alvaro T.; Petit, Ignacio; Varas, Eduardo; Muñoz Wilson, Alex; Sala, Enric

    2016-01-01

    The Juan Fernández and Desventuradas islands are among the few oceanic islands belonging to Chile. They possess a unique mix of tropical, subtropical, and temperate marine species, and although close to continental South America, elements of the biota have greater affinities with the central and south Pacific owing to the Humboldt Current, which creates a strong biogeographic barrier between these islands and the continent. The Juan Fernández Archipelago has ~700 people, with the major industry being the fishery for the endemic lobster, Jasus frontalis. The Desventuradas Islands are uninhabited except for a small Chilean military garrison on San Félix Island. We compared the marine biodiversity of these islands across multiple taxonomic groups. At San Ambrosio Island (SA), in Desventuradas, the laminarian kelp (Eisenia cokeri), which is limited to Desventuradas in Chile, accounted for >50% of the benthic cover at wave exposed areas, while more sheltered sites were dominated by sea urchin barrens. The benthos at Robinson Crusoe Island (RC), in the Juan Fernández Archipelago, comprised a diverse mix of macroalgae and invertebrates, a number of which are endemic to the region. The biomass of commercially targeted fishes was >2 times higher in remote sites around RC compared to sheltered locations closest to port, and overall biomass was 35% higher around SA compared to RC, likely reflecting fishing effects around RC. The number of endemic fish species was extremely high at both islands, with 87.5% of the species surveyed at RC and 72% at SA consisting of regional endemics. Remarkably, endemics accounted for 99% of the numerical abundance of fishes surveyed at RC and 96% at SA, which is the highest assemblage-level endemism known for any individual marine ecosystem on earth. Our results highlight the uniqueness and global significance of these biodiversity hotspots exposed to very different fishing pressures. PMID:26734732

  15. 600 kyr of Hydrothermal Activity on the Cleft Segment of the Juan de Fuca Ridge

    Science.gov (United States)

    Middleton, J. L.; Mukhopadhyay, S.; Langmuir, C. H.; Costa, K.; McManus, J. F.; Katz, R. F.; Huybers, P. J.; Winckler, G.; Li, Y.

    2017-12-01

    Pressure fluctuations caused by glacially driven variations in sea level may modulate magmatic and hydrothermal output at submarine volcanic centers, with falling sea level driving increased volcanic activity. In turn, glacially paced changes in submarine volcanism could induce globally synchronous variations in the delivery of bioavailable iron and CO2 from mid-ocean ridges and thus provide solid-Earth feedbacks into the climate system. While evaluation of submarine volcanic output on orbital-timescales is technically challenging, near-ridge sediment cores hosting hydrothermal plume precipitates provide continuous, spatially integrated, and datable records to investigate the long-term behavior of hydrothermal systems. We will present new sedimentary records of hydrothermal variability spanning the past 600 kyr on the Cleft Segment of the Juan de Fuca Ridge in the Northeast Pacific. As an intermediate spreading-rate ridge, the Juan de Fuca Ridge is hypothesized to be particularly sensitive to sea level forcing at the Milankovitch frequencies of Pleistocene glacial cycles. Thus, the new records can be used to examine the connection between sea level and hydrothermal activity over multiple glacial cycles. Hydrothermal input is determined from iron and copper, with a titanium-based correction for lithogenic contributions. Sedimentary fluxes are then constrained using excess thorium-230 and extraterrestrial helium-3 as constant flux proxies. Preliminary results indicate 10-fold changes in hydrothermal iron and copper fluxes over the past 600 kyr and suggest a quasiperiodic variability in hydrothermal deposition on 100 to 120 kyr cycles. Comparison of the Juan de Fuca record with model predictions for an intermediate spreading ridge forced by Pleistocene glacial cycles finds frequent coincidence between predicted positive anomalies in magmatic output and observed peaks in hydrothermal deposition. This work encourages the continued exploration of the relationship between

  16. A heat vulnerability index to improve urban public health management in San Juan, Puerto Rico.

    Science.gov (United States)

    Méndez-Lázaro, Pablo; Muller-Karger, Frank E; Otis, Daniel; McCarthy, Matthew J; Rodríguez, Ernesto

    2018-05-01

    Increased frequency and length of high heat episodes are leading to more cardiovascular issues and asthmatic responses among the population of San Juan, the capital of the island of Puerto Rico, USA. An urban heat island effect, which leads to foci of higher temperatures in some urban areas, can raise heat-related mortality. The objective of this research is to map the risk of high temperature in particular locations by creating heat maps of the city of San Juan. The heat vulnerability index (HVI) maps were developed using images collected by satellite-based remote sensing combined with census data. Land surface temperature was assessed using images from the Thermal Infrared Sensor flown on Landsat 8. Social determinants (e.g., age, unemployment, education and social isolation, and health insurance coverage) were analyzed by census tract. The data were examined in the context of land cover maps generated using products from the Puerto Rico Terrestrial Gap Analysis Project (USDA Forest Service). All variables were set in order to transform the indicators expressed in different units into indices between 0 and 1, and the HVI was calculated as sum of score. The tract with highest index was considered to be the most vulnerable and the lowest to be the least vulnerable. Five vulnerability classes were mapped (very high, high, moderate, low, and very low). The hottest and the most vulnerable tracts corresponded to highly built areas, including the Luis Munoz International Airport, seaports, parking lots, and high-density residential areas. Several variables contributed to increased vulnerability, including higher rates of the population living alone, disabilities, advanced age, and lack of health insurance coverage. Coolest areas corresponded to vegetated landscapes and urban water bodies. The urban HVI map will be useful to health officers, emergency preparedness personnel, the National Weather Service, and San Juan residents, as it helps to prepare for and to mitigate

  17. The Crownpoint and Churchrock uranium deposits, San Juan Basin, New Mexico: An ISL mining perspective

    International Nuclear Information System (INIS)

    McCarn, D.W.

    2001-01-01

    The Crownpoint and Churchrock uranium deposits, San Juan Basin, New Mexico are currently being developed by Uranium Resources, Inc. (URI) and its subsidiary Hydro Resources, Inc. (HRI) with an anticipated start-up in 1998. Both deposits will be developed using advanced in situ leach (ISL) mining techniques. URI/HRI currently has about 14,583 t U (37.834 million pounds U 3 O 8 ) of estimated recoverable reserves at Crownpoint and Churchrock. at a cost less than $39/kg U ($15/lb U 3 O 8 ). The uranium endowment of the San Juan Basin is the largest of any province in the USA. In March, 1997, a Final Environmental Impact Statement (FEIS) for the Crownpoint and Churchrock sites was completed by the Nuclear Regulatory Commission which recommends the issuance of an operating license. The FEIS is the culmination of a 9 year effort to license and develop the deposits. The Westwater Canyon Member of the Jurassic Morrison Formation is an arkosic, fine to coarse grained sandstone bounded by near basinwide confining clays deposited in a wet alluvial fan environment within the San Juan Basin. The primary, trend-ore deposits are hosted by the Westwater Canyon Member as humate-rich, syngenetic tabular deposits which were subsequently remobilized into roll fronts. Since deposition in the Jurassic, two phases of remobilization have occurred in the basin causing the formation of in situ leach amenable monometallic uranium rolls free of organic debris. Following in situ mining, ground water restoration of the Crownpoint and Churchrock mines is required to provide a water quality consistent with pre-mining baseline conditions. The development of in situ mining offers an environmentally sound and cost-effective method for uranium extraction. URI/HRI anticipates a production of 385-1,156 Tonnes U/year (1-3 million pounds U 3 O 8 ) from the New Mexico properties. (author)

  18. Las correcciones de Juan Rejano. En torno a Canciones de la paz (1955

    Directory of Open Access Journals (Sweden)

    Luján Atienza, Ángel Luis

    2016-06-01

    Full Text Available The aim of this paper is to explain the reasons for Juan Rejano to have removed his book Canciones de la paz (Songs for the Peace, 1955 from his first almost complete poems collection, Alas de tierra (Wings of Earth, 1975, and to modify it in his last «collected poems», La mirada del hombre (The Man’s Sight, 1978. In this paper, the circumstances under which the book was written will be analysed, these being linked to the World Movement for Peace and being deeply influenced by the P.C.E. (Spanish Communist Party exhortations. The study of textual variants, deleted poems and new assignments in finished poems reveals that Juan Rejano feels uncomfortable with the combative voice of this part of his work as the instrument to reveal the ugliest side in contemporary life. In addition, this book, intended to be written for children, does not fit in young readers literature.Este artículo trata de dar cuenta de las razones que llevaron a Juan Rejano a eliminar el libro Canciones de la paz (1955 de su primera gran recopilación, Alas de tierra (1975, y a modificarlo sustancialmente en su última suma poética, La mirada del hombre (1978. Con el análisis de las circunstancias en que nació el libro, vinculado al Movimiento Mundial por la Paz e influenciado por las consignas del PCE, y con el estudio de variantes, poemas eliminados y poemas reubicados, podemos aventurar que Rejano no se sentía cómodo con la parte más combativa del libro y con la que presentaba la faceta más sombría de la realidad contemporánea, además de que no cabía el adoctrinamiento en una escritura explícitamente dirigida a los niños.

  19. A heat vulnerability index to improve urban public health management in San Juan, Puerto Rico

    Science.gov (United States)

    Méndez-Lázaro, Pablo; Muller-Karger, Frank E.; Otis, Daniel; McCarthy, Matthew J.; Rodríguez, Ernesto

    2018-05-01

    Increased frequency and length of high heat episodes are leading to more cardiovascular issues and asthmatic responses among the population of San Juan, the capital of the island of Puerto Rico, USA. An urban heat island effect, which leads to foci of higher temperatures in some urban areas, can raise heat-related mortality. The objective of this research is to map the risk of high temperature in particular locations by creating heat maps of the city of San Juan. The heat vulnerability index (HVI) maps were developed using images collected by satellite-based remote sensing combined with census data. Land surface temperature was assessed using images from the Thermal Infrared Sensor flown on Landsat 8. Social determinants (e.g., age, unemployment, education and social isolation, and health insurance coverage) were analyzed by census tract. The data were examined in the context of land cover maps generated using products from the Puerto Rico Terrestrial Gap Analysis Project (USDA Forest Service). All variables were set in order to transform the indicators expressed in different units into indices between 0 and 1, and the HVI was calculated as sum of score. The tract with highest index was considered to be the most vulnerable and the lowest to be the least vulnerable. Five vulnerability classes were mapped (very high, high, moderate, low, and very low). The hottest and the most vulnerable tracts corresponded to highly built areas, including the Luis Munoz International Airport, seaports, parking lots, and high-density residential areas. Several variables contributed to increased vulnerability, including higher rates of the population living alone, disabilities, advanced age, and lack of health insurance coverage. Coolest areas corresponded to vegetated landscapes and urban water bodies. The urban HVI map will be useful to health officers, emergency preparedness personnel, the National Weather Service, and San Juan residents, as it helps to prepare for and to mitigate

  20. On the use of stochastic approximation Monte Carlo for Monte Carlo integration

    KAUST Repository

    Liang, Faming

    2009-01-01

    The stochastic approximation Monte Carlo (SAMC) algorithm has recently been proposed as a dynamic optimization algorithm in the literature. In this paper, we show in theory that the samples generated by SAMC can be used for Monte Carlo integration

  1. EMBARAZO ADOLESCENTE EN EL CONTEXTO FAMILIA, SAN JUAN DEL ORO, SANDIA-PUNO

    OpenAIRE

    JOVER QUIMPER, HERNAN ALBERTO; Universidad Nacional del Altiplano

    2013-01-01

    La investigación, tuvo el objetivo de analizar, el embarazo de los adolescentes en el contexto familia, San Juan del Oro; Sandia-Puno: 2011. Los materiales de estudio, fueron: la observación, la entrevista y el documental. La muestra fue de 160 madres adolescentes, de un universo de 398. El método de análisis, fue el hipotético-deductivo. Resultados, los factores individuales y el índice de maternidad-embarazo precoz, se aproxima a -1(.820). La correlación estuvo fuerte e inversamente asociad...

  2. Integration Mining Engineering, Faculty of Engineering, National University of San Juan

    International Nuclear Information System (INIS)

    Berenguer, T.; Salinas, L.; Cascon, R.

    2007-01-01

    This work presents proposals for the mud handling derived from mineralogical processes, trying to maintain a balance between the nature and the sustainable development of the region; it comprises of an investigation project that the authors carry out in the National University of San Juan.In this case particular aspects of problematic the environmental one are approached as the contamination of associated the superficial and underground water to the handling of the mineral remainders, specifically muds.To practices and procedures of engineering are described that offer protection against the faults of the deposits so that the remainders and the water of process are outside the hydrological river basins. (author)

  3. Cerebro y metáfora en la novela "Pedro Páramo", de Juan Rulfo

    Directory of Open Access Journals (Sweden)

    CECILIA EDILMA DÍAZ DÍAZ

    2010-01-01

    Full Text Available Se trata de un avance de investigación que aplica la teoría neurolingüística de Omar Parra Rozo para leer y comprender la metáfora en un texto literario. Se toma como objeto de estudio la novela "Pedro Páramo" de Juan Rulfo, específicamente los fragmentos que hablan acerca de la imagen compleja (religión-poder y muerte. El ejercicio de investigación alcanzó a establecer la relación que existe entre imagen- cerebro y metáfora, en el discurso de esta novela.

  4. A morte como elemento cultural mexicano em Pedro Páramo, de Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Ana Paula Cantarelli

    2013-06-01

    Full Text Available Pedro Páramo (1955, de Juan Rulfo, desde sua publicação tem sido alvo de inúmeros estudos desenvolvidos por pesquisadores de diferentes áreas do conhecimento (história, sociologia, filosofia, etc.. Neste texto, buscou-se elaborar uma proposta de leitura a partir do reconhecimento da morte, símbolo nacional mexicano, como um elemento constituinte da estrutura narrativa desse romance, com a intenção de ampliar o campo de análises já delineado ao redor dessa obra.

  5. La Section d´Or y Juan Gris: Un camino hacia un cubismo espiritual

    OpenAIRE

    Sarriugarte Gómez, Iñigo

    2016-01-01

    [ES] El artista de origen madrileño Juan Gris tuvo la oportunidad de ser testigo directo de la gestación del cubismo a raíz de su estancia en 1906 en la capital francesa. A partir de aquí, comienza a relacionarse con distintos pintores y críticos vanguardistas, que le ofertarán nuevas posibilidades aperturistas para su posterior involucración cubista. El año 1912 marca su definitiva integración bajo la estela pictórica del cubismo sintético, destacando igualmente su relación con el g...

  6. Nuevos datos sobre la Obra de Juan de Horozco y Covarrubias

    OpenAIRE

    Zafra Molina, Rafael

    2011-01-01

    Este estudio analiza la vida y obra de Juan de Horozco, uno de los mejores autores de emblemas españoles, en el 400 aniversario de su muerte. En él se repasan todas sus obras y se aclaran algunas cuestiones —como el control de Horozco de la impresión de sus obras— que pretenden ayudar a una mejor comprensión de sus obras  y facilitar la elaboración de nuevas ediciones. Además, se aclaran algunos aspectos importantes de su vida, como sus vínculos con otros miembros de su ilustre familia, las r...

  7. Eating in a Home for Children. Food Resistance in the Residence Juan de Lanuza

    OpenAIRE

    Cantarero, Luis

    2001-01-01

    The basic needs of the children of the Residence Juan de Lanuza (Zaragoza, Spain) are covered by the daily amount of food they are provided with at meals. However, the tasks of the professionals who work in this Home are not restricted to feeding. One of the educational goals is to teach children socially adapted food habits, which are considered essential for the young persons’ “culturisation”. Food socialization has its roots in the ideology of the educating staff. The disciplinary system i...

  8. Juan Valdez la estrategia detrás de la marca

    OpenAIRE

    Ana María Parente

    2017-01-01

    El libro Juan Valdez, la estrategia detrás de la marca busca explicar la táctica de valorización del café colombiano desarrollada por la Federación Nacional de Cafeteros (FNC), que tiene como principal objetivo beneficiar a los caficultores colombianos a lo largo de la cadena de valor. Para ello, el texto hace un recuento del contexto del mercado cafetero mundial, haciendo énfasis en los principales proveedores y consumidores hasta finalmente centrarse en la construcción de la marca Café de C...

  9. Trayectos de lectura de Espacio, de Juan Ramón Jiménez

    OpenAIRE

    Luján Atienza, Ángel Luis

    2013-01-01

    El estudio de Espacio, de Juan Ramón Jiménez, a partir de la teoría cognitiva de las metáforas conceptuales y la fusión de dominios conceptuales (blending), en confluencia con la filosofía heideggeriana, descubre en el poema dos movimientos contradictorios: el de la fuga y de la búsqueda de un centro, que se pueden poner en relación con dos trayectos de lectura y dos tendencias hermenéuticas: la modernista y la post-modernista. En este contexto se tratan de explicar las paradojas y complejida...

  10. Geochemical variability of natural soils and reclaimed minespoil soils in the San Juan Basin, New Mexico

    Science.gov (United States)

    Gough, L.P.; Severson, R.C.

    1981-01-01

    An inventory of total-and extractable-element concentrations in soils was made for three areas of the San Juan Basin in New Mexico: (1) the broad area likely to be affected by energy-related development. (2) an area of soils considered to have potential for use as topsoil in mined-land reclamation. and (3) an area of the San Juan coal mine that has been regraded. topsoiled, and revegetated. Maps made of concentrations of 16 elements in area 1 soils show no gradational pattern across the region. Further. these maps do not correspond to those showing geology or soil types. Sodic or saline problems, and a possible but unproven deficiency of zinc available to plants. may make some of the soils in this area undesirable for use as topsoil in mined-land reclamation. Taxonomic great groups of soil in this area cannot be distinguished because each great group tends to have a large within-group variability if compared to the between-group variability. In area 2 the major soils sampled were of the Sheppard. Shiprock. and Doak association. These soils are quite uniform in chemical composition and are not greatly saline or sodic. As in area 1 soils. zinc deficiency may cause a problem in revegetating most of these soils. It is difficult to distinguish soil taxonomic families by using their respective chemical compositions. because of small between-family variability. Topsoil from a reclaimed area of the San Juan mine (area 3) most closely resembles the chemical composition of natural C horizons of soil from area 1. Spoil material that has not been topsoiled is likely to cause sodic-and saline-related problems in revegetation and may cause boron toxicity in plants. Topsoiling has apparently ameliorated these potential problems for plant growth on mine spoil. Total and extractable concentrations for elements and other parameters for each area of the San Juan Basin provide background information for the evaluation of the chemical quality of soils in each area.

  11. El largo camino de Juan Preciado hacia el Mictlán

    OpenAIRE

    Bartolomé Martínez, Cristina

    2011-01-01

    Podríamos establecer que lo que se esconde tras el viaje de Juan Preciado no es sencillamente el mito azteca del Mictlán, sino el arquetipo universal del alma que regresa a las profundidades del ser en un viaje introspectivo que encontraría su correspondencia en mitos de todas las culturas que posean una cosmovisión, una manera propia de interpretar el mundo y, lo que es aún más inquietante, la vida.

  12. SOCIAL MANAGEMENT OF IRRIGATION WATER IN THE SAN JUAN EJIDO, URIREO, SALVATIERRA, GUANAJUATO

    Directory of Open Access Journals (Sweden)

    Julieta Aidee Díaz-Rosillo

    2011-09-01

    Full Text Available In irrigated agriculture, producers are responsible for the management and administration of multiple common resources, among which include land and water. These common resources are used jointly by the whole community and in the same way are removed, depending on the needs of each individual. In the case of well 15 in the Ejido San Juan, has been maintained to be administered only by users without needing them, so far, the involvement of people outside the community or any government body for best results.

  13. Clima organizacional en trabajadores administrativos del sector salud Red de Salud San Juan de Lurigancho 2016

    OpenAIRE

    Umasi Llave, Juana Maura

    2017-01-01

    Analiza el nivel del clima organizacional del personal administrativo que labora en las instalaciones de la Red de Salud de San Juan de Lurigancho, desagregándolo en las dimensiones a la autorrealización, involucramiento, supervisión, comunicación y las condiciones laborales. Se usó la encuesta como técnica de toma de datos, evaluando a 101 personas. Se hizo un análisis descriptivo de los datos obtenidos. En los resultados se obtuvo que el 72,3% de los 101 encuestados revelaron que el clim...

  14. Seguimiento de la construcción de edificio 43 viviendas Av/ Juan XXIII Valencia

    OpenAIRE

    BURGOS ROMERO, LUIS

    2011-01-01

    Convenios con empresa. La obra prevé la construcción de un edificio de 41 viviendas VP + 2 viviendas libres, constando de 2 plantas sótano para uso de aparcamiento y trasteros, planta baja con local comercial, 8 plantas con 5 viviendas por planta y una planta ático con 3 viviendas. La obra está en su fase de estructura, habiéndose realizado las plantas de sótano. Burgos Romero, L. (2011). Seguimiento de la construcción de edificio 43 viviendas Av/ Juan XXIII Valencia. http://hdl.handle.net...

  15. Pyroclastic eruptions from Axial caldera, Juan de Fuca Ridge, NE Pacific Ocean

    Energy Technology Data Exchange (ETDEWEB)

    Helo, Christoph; Stix, John [Department of Earth and Planetary Sciences, McGill University, 3450 University Street, Montreal, Quebec H3A 2A7 (Canada); Clague, Dave A [Monterey Bay Aquarium Research Institute 7700 Sandholdt Road, Moss Landing, CA 95039-9644 (United States)

    2008-10-01

    Unconsolidated volcaniclastic glass deposits on the flanks of Axial Seamount, a caldera system situated on the Juan de Fuca Ridge in the NE Pacific Ocean, demonstrate the occurrence of explosive events, in addition to effusive activity. The variety of produced glass fragments ranges from various angular forms to thin deep-sea limu o Pele, with dominantly moderately fractionated to occasionally primitive MOR basalt composition. A model involving the collapse of a magmatic foam layer may account for the observed spectrum of glass fragments.

  16. VITICULTURA Y POLÍTICA INTERNACIONAL: EL INTENTO DE REINCORPORAR A MENDOZA Y SAN JUAN A CHILE (1820-1835

    Directory of Open Access Journals (Sweden)

    PABLO LACOSTE

    2006-06-01

    Full Text Available Entre 1830 y 1835 algunos dirigentes de Mendoza y San Juan, provincias vitivinícolas, trataron de separarse de la República Argentina y regresar a Chile, tal como en la época colonial. Durante más de dos siglos, Mendoza y San Juan fueron parte del Corregimiento de Cuyo del Reino de Chile. Esta situación cambió desde 1776 con la creación del Virreinato del Río de la Plata. Después de la Revolución de 1810, Mendoza y San Juan formaron parte de la República Argentina. Pero algunos años después de la independencia, un grupo descontento con la acción y decisiones del gobierno de Buenos Aires, inició acciones orientadas a la secesión. Este artículo investiga las razones y motivaciones socioeconómicas de este grupoBetween 1830 and 1835 some leaders of Mendoza and San Juan, wine industry oriented provinces, attempted to withdrawal from Argentina Republic, and come back to Chile such as in colonial times. During more than two centuries, Mendoza and San Juan were members of Cuyo Province in Chile's Kingdom. This situation changed since 1776 because the creation of the River Plate Viceroyalty. After Revolution of 1810, Mendoza and San Juan took part of Argentina Republic. But some years after the independence, a group discontented with de action and decision of Buenos Aires government begun the action oriented to secession. This paper explores the socioeconomic reasons and motivation of this group

  17. Ästhetisches Bild und Christliche Mystik im Cántico espiritual des San Juans de la Cruz

    DEFF Research Database (Denmark)

    Kluge, Sofie

    2003-01-01

      In diesem Zusammenhang werde ich, von dem Cántico espiritual des San Juans de la Cruz (1577) ausgehend und zentrale rezeptionsgeschichtliche Probleme einbeziehend, den mystischen Bildbegriff untersuchen. Auf der einen Seite bildet San Juans selbstständige Interpretation des biblischen Hoheliedes...... macht somit den übergeordneten Rahmen meiner Interpretation und Diskussion des Cántico espiritual mit dazugehörigen Prosakommentaren aus. Weil der Cántico espiritual als mysticher Text behauptet, er beschreibt eine paranormale Erfahrung (die unio mystica als intenses Gotteserlebnis), ist es relevant...

  18. Isla de calor y ocupación espacial urbana en San Juan, Argentina: análisis evolutivo

    OpenAIRE

    Papparelli, Alberto; Kurbán, Alejandra; Cúnsulo, Mario

    2013-01-01

    En este articulo se presentan resultados finales de un proyecto de investigacion bianual (2009-2010), denominado Variación histórica y espacial de la isla de calor urbana en zona árida, financiado por la Universidad Nacional de San Juan, Argentina. Su objetivo principal es determinar la progresiva modificacion de la isla de calor urbana en un periodo de quince anos (1995-2010) y la correlacion de esta con la ocupacion del area urbana del Gran San Juan (GSJ), localizada en la diagonal arida de...

  19. Herpetofauna de la provincia de San Juan, Argentina: lista comentada y distribución geográfica

    OpenAIRE

    Ávila, Luciano Javier; Acosta, Juan Carlos; Murúa, Fernando

    1998-01-01

    El conocimiento de la fauna de anfibios y reptiles de la Provincia de San Juan es fragmentario e incompleto. En razón de ello, el objetivo de este trabajo es presentar una lista de las especies de anfibios y reptiles registrados para San Juan. La información se relevó a partir de la revisión de colecciones de referencia y a partir de revisiones bibliográficas. Se establece un registro de 59 especies y se presentan las localidades de colección de las mismas. The knowledge of amphibians and ...

  20. Los cambios en la política social argentina y el impacto del terremoto de San Juan (1944)

    OpenAIRE

    Pablo Buchbinder

    2014-01-01

    El objetivo del artículo consiste en analizar las consecuencias sociales y políticas del terremoto de San Juan. El estudio focaliza en tres aspectos: los relacionados con las colectas de dinero para las víctimas, con las políticas de vivienda y con la aparición de nuevas leyes de adopción de menores. Abstract  The aim of this paper is to analyze the social and political consequences of the earthquake in San Juan. The study focuses on three areas: those related to collecting money for...

  1. General Monte Carlo code MONK

    International Nuclear Information System (INIS)

    Moore, J.G.

    1974-01-01

    The Monte Carlo code MONK is a general program written to provide a high degree of flexibility to the user. MONK is distinguished by its detailed representation of nuclear data in point form i.e., the cross-section is tabulated at specific energies instead of the more usual group representation. The nuclear data are unadjusted in the point form but recently the code has been modified to accept adjusted group data as used in fast and thermal reactor applications. The various geometrical handling capabilities and importance sampling techniques are described. In addition to the nuclear data aspects, the following features are also described; geometrical handling routines, tracking cycles, neutron source and output facilities. 12 references. (U.S.)

  2. Monte Carlo lattice program KIM

    International Nuclear Information System (INIS)

    Cupini, E.; De Matteis, A.; Simonini, R.

    1980-01-01

    The Monte Carlo program KIM solves the steady-state linear neutron transport equation for a fixed-source problem or, by successive fixed-source runs, for the eigenvalue problem, in a two-dimensional thermal reactor lattice. Fluxes and reaction rates are the main quantities computed by the program, from which power distribution and few-group averaged cross sections are derived. The simulation ranges from 10 MeV to zero and includes anisotropic and inelastic scattering in the fast energy region, the epithermal Doppler broadening of the resonances of some nuclides, and the thermalization phenomenon by taking into account the thermal velocity distribution of some molecules. Besides the well known combinatorial geometry, the program allows complex configurations to be represented by a discrete set of points, an approach greatly improving calculation speed

  3. Monte Carlo simulation of experiments

    International Nuclear Information System (INIS)

    Opat, G.I.

    1977-07-01

    An outline of the technique of computer simulation of particle physics experiments by the Monte Carlo method is presented. Useful special purpose subprograms are listed and described. At each stage the discussion is made concrete by direct reference to the programs SIMUL8 and its variant MONTE-PION, written to assist in the analysis of the radiative decay experiments μ + → e + ν sub(e) antiνγ and π + → e + ν sub(e)γ, respectively. These experiments were based on the use of two large sodium iodide crystals, TINA and MINA, as e and γ detectors. Instructions for the use of SIMUL8 and MONTE-PION are given. (author)

  4. Advanced Computational Methods for Monte Carlo Calculations

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Forrest B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2018-01-12

    This course is intended for graduate students who already have a basic understanding of Monte Carlo methods. It focuses on advanced topics that may be needed for thesis research, for developing new state-of-the-art methods, or for working with modern production Monte Carlo codes.

  5. Nested Sampling with Constrained Hamiltonian Monte Carlo

    OpenAIRE

    Betancourt, M. J.

    2010-01-01

    Nested sampling is a powerful approach to Bayesian inference ultimately limited by the computationally demanding task of sampling from a heavily constrained probability distribution. An effective algorithm in its own right, Hamiltonian Monte Carlo is readily adapted to efficiently sample from any smooth, constrained distribution. Utilizing this constrained Hamiltonian Monte Carlo, I introduce a general implementation of the nested sampling algorithm.

  6. Climate-driven disturbances in the San Juan River sub-basin of the Colorado River

    Science.gov (United States)

    Bennett, Katrina E.; Bohn, Theodore J.; Solander, Kurt; McDowell, Nathan G.; Xu, Chonggang; Vivoni, Enrique; Middleton, Richard S.

    2018-01-01

    Accelerated climate change and associated forest disturbances in the southwestern USA are anticipated to have substantial impacts on regional water resources. Few studies have quantified the impact of both climate change and land cover disturbances on water balances on the basin scale, and none on the regional scale. In this work, we evaluate the impacts of forest disturbances and climate change on a headwater basin to the Colorado River, the San Juan River watershed, using a robustly calibrated (Nash-Sutcliffe efficiency 0.76) hydrologic model run with updated formulations that improve estimates of evapotranspiration for semi-arid regions. Our results show that future disturbances will have a substantial impact on streamflow with implications for water resource management. Our findings are in contradiction with conventional thinking that forest disturbances reduce evapotranspiration and increase streamflow. In this study, annual average regional streamflow under the coupled climate-disturbance scenarios is at least 6-11 % lower than those scenarios accounting for climate change alone; for forested zones of the San Juan River basin, streamflow is 15-21 % lower. The monthly signals of altered streamflow point to an emergent streamflow pattern related to changes in forests of the disturbed systems. Exacerbated reductions of mean and low flows under disturbance scenarios indicate a high risk of low water availability for forested headwater systems of the Colorado River basin. These findings also indicate that explicit representation of land cover disturbances is required in modeling efforts that consider the impact of climate change on water resources.

  7. A Geo-referenced 3D model of the Juan de Fuca Slab and associated seismicity

    Science.gov (United States)

    Blair, J.L.; McCrory, P.A.; Oppenheimer, D.H.; Waldhauser, F.

    2011-01-01

    We present a Geographic Information System (GIS) of a new 3-dimensional (3D) model of the subducted Juan de Fuca Plate beneath western North America and associated seismicity of the Cascadia subduction system. The geo-referenced 3D model was constructed from weighted control points that integrate depth information from hypocenter locations and regional seismic velocity studies. We used the 3D model to differentiate earthquakes that occur above the Juan de Fuca Plate surface from earthquakes that occur below the plate surface. This GIS project of the Cascadia subduction system supersedes the one previously published by McCrory and others (2006). Our new slab model updates the model with new constraints. The most significant updates to the model include: (1) weighted control points to incorporate spatial uncertainty, (2) an additional gridded slab surface based on the Generic Mapping Tools (GMT) Surface program which constructs surfaces based on splines in tension (see expanded description below), (3) double-differenced hypocenter locations in northern California to better constrain slab location there, and (4) revised slab shape based on new hypocenter profiles that incorporate routine depth uncertainties as well as data from new seismic-reflection and seismic-refraction studies. We also provide a 3D fly-through animation of the model for use as a visualization tool.

  8. La junta luz di Juan Gelman: un oratorio contro il silenzio

    Directory of Open Access Journals (Sweden)

    Arianna Fiore

    2014-12-01

    Full Text Available Juan Gelman is generally considered by critics to be one of the most important poets of modern Argentina. Born in Buenos Aires in 1930 from Russian-Jewish parents, he published his first collection of poems (Violín y otras cuestiones in 1956. He is a member of the generación del 60, made up of intellectuals influenced in their critical realism by the charisma of Raúl González Tuñón, forerunner of Argentina’s social and political poetry. This group was politically very active, as demonstrated by their experimental language and iconoclastic lyricism. Gelman’s later life was marked by his exile in the wake of the 1976 dictatorship, and by the desaparición of his son Marcelo Ariel, his daughter-in-law Claudia and his grand-daughter Andrea (born in prison. Since then, it was impossible for Juan Gelman to separate his personal plight from Argentina’s historical-political situation, and his poetry became more and more intimate and lyrical, marked by human drama. La junta luz, the author’s only theatre play, was written and published in this second phase.

  9. El naturalista Alejando de Humboldt, Cavanilles y Juan Andrés

    Directory of Open Access Journals (Sweden)

    María-Rosario MARTÍ MARCO

    2009-11-01

    Full Text Available RESUMEN: Tras una breve introducción en la que se traza un paralelismo entre el erudito Juan Andrés y el naturalista Alejandro de Humboldt, se presenta una síntesis de la relevancia del viaje científico de Humboldt iniciado en España. Las referencias sobre la figura y trabajo de Humboldt y, en menor medida, sobre Cavanilles en la gran obra total de Andrés demuestran el vigor intelectual de éste, quien subraya muchos de los elementos fundamentales del legado humboldtiano.ABSTRACT: This paper begins with a brief introduction to the similarities between the scholar Juan Andrés and the naturalist Alexander von Humboldt and continues with a summary of the relevance of Humboldt’s scientific expedition which began in Spain. The references to Humboldt’s persona and endeavours, and to a lesser extent to Cavanilles, in all of Andrés’ great works demonstrate the intellectual ability of the author who pinpoints many of the fundamental aspects of Humboldt’s legacy.

  10. La astronomía de un humanista, Juan Andrés

    Directory of Open Access Journals (Sweden)

    José Antonio SANDUVETE CHAVES

    2009-11-01

    Full Text Available RESUMEN: La páginas que siguen pretenden ofrecer una visión de conjunto del análisis que de la historia de la Astronomía realiza Juan Andrés, desde los orígenes de la humanidad hasta el siglo XVIII. Este análisis, incluido en su monumental obra Origen, progresos y estado actual de toda la literatura, destaca por su modernidad y precisión, constituyendo, por tanto, una interesante base de comparación entre la visión de la ciencia astronómica del humanismo ilustrado y la que pervive en la actualidad.ABSTRACT: The following pages attempt to offer a full view of the research into the history of astronomy made by Juan Andrés, from the beginning of human culture until the 18th century. This analysis, included in a broader work called Origen, progresos y estado de toda la literatura, stands out on account of its modern and precise ideas, thus representing an interesting knowledge base for comparing the view of astronomy during the Enlightenment with that of the present.

  11. Juan Goytisolo y la tradición autobiográfica española

    Directory of Open Access Journals (Sweden)

    Randolph D. Pope

    2016-04-01

    Full Text Available Escribir una autobiografía exige una compleja elección de modelos. Entre los escritores de autobiografías que Juan Goytisolo incorpora en su propios textos autobiográficos, Coto vedado (1985 y En los reinos de taifa (1986, se encuentra José María Blanco White, escritor de fines del siglo XVIII y comienzos del XIX, relativamente olvidado hasta décadas recientes. Significativamente, en la autobiografía de Blanco White ocupa un lugar importante su descubrimiento de Feijoo, cuya fama había periclitado cuando Blanco lo descubre. Vemos así la estrategia autobiográfica de preferir como modelo literario una figura que es necesario reivindicar.   A complex selection of models is required to write an autobiography. Among the writers of autobiographies that Juan Goytisolo includes in his own autobiographical texts, Coto vedado (1985 and En los reinos de taifa (1986 is José Maria Blanco White, a writer from the end of the eighteenth and beginning of the nineteenth centuries, who was relatively forgotten until recently. Significantly, Blanco While's discovery of Feijoo, whose fame had been declining when Blanco discovered him, has an important place in his autobiography. Thus, we see the autobiographical strategy of selecting a figure who needs to be recovered as a literary model.

  12. El destierro infinito de Blanco White en la mirada de Juan Goytisolo

    Directory of Open Access Journals (Sweden)

    Durán López, Fernando

    2010-06-01

    Full Text Available In the years 1970-1972, the novelist Juan Goytisolo published several studies and translations on the work of José María Blanco White, which represent a key moment in the recovery of that forgotten writer for the modern Spanish culture. The argument made in this essay is that the consciously identifying strategy applied by Goytisolo on Blanco White, in order to define a Spanish intellectual tradition throughout the centuries, marked by exile and dissent, is in fact a deformation of the figure and thought of the writer from Seville. Blanco White’s reception in Spain, however, has been conditioned by that reading.En torno a los años 1970-1972 el novelista Juan Goytisolo publica varios estudios y traducciones sobre la obra de José María Blanco White, que suponen un momento clave en la recuperación de ese olvidado escritor para la moderna cultura española. La tesis formulada en el presente artículo es que la estrategia conscientemente identificadora que aplica Goytisolo sobre Blanco White, a fin de definir una tradición intelectual española a lo largo de los siglos marcada por el exilio y la disidencia, supone de hecho una deformación de la figura y el pensamiento del escritor sevillano. La recepción de Blanco White en España ha quedado, sin embargo, condicionada por esa lectura.

  13. Monte Carlo Treatment Planning for Advanced Radiotherapy

    DEFF Research Database (Denmark)

    Cronholm, Rickard

    This Ph.d. project describes the development of a workflow for Monte Carlo Treatment Planning for clinical radiotherapy plans. The workflow may be utilized to perform an independent dose verification of treatment plans. Modern radiotherapy treatment delivery is often conducted by dynamically...... modulating the intensity of the field during the irradiation. The workflow described has the potential to fully model the dynamic delivery, including gantry rotation during irradiation, of modern radiotherapy. Three corner stones of Monte Carlo Treatment Planning are identified: Building, commissioning...... and validation of a Monte Carlo model of a medical linear accelerator (i), converting a CT scan of a patient to a Monte Carlo compliant phantom (ii) and translating the treatment plan parameters (including beam energy, angles of incidence, collimator settings etc) to a Monte Carlo input file (iii). A protocol...

  14. The MC21 Monte Carlo Transport Code

    International Nuclear Information System (INIS)

    Sutton TM; Donovan TJ; Trumbull TH; Dobreff PS; Caro E; Griesheimer DP; Tyburski LJ; Carpenter DC; Joo H

    2007-01-01

    MC21 is a new Monte Carlo neutron and photon transport code currently under joint development at the Knolls Atomic Power Laboratory and the Bettis Atomic Power Laboratory. MC21 is the Monte Carlo transport kernel of the broader Common Monte Carlo Design Tool (CMCDT), which is also currently under development. The vision for CMCDT is to provide an automated, computer-aided modeling and post-processing environment integrated with a Monte Carlo solver that is optimized for reactor analysis. CMCDT represents a strategy to push the Monte Carlo method beyond its traditional role as a benchmarking tool or ''tool of last resort'' and into a dominant design role. This paper describes various aspects of the code, including the neutron physics and nuclear data treatments, the geometry representation, and the tally and depletion capabilities

  15. Monte Carlo simulation in nuclear medicine

    International Nuclear Information System (INIS)

    Morel, Ch.

    2007-01-01

    The Monte Carlo method allows for simulating random processes by using series of pseudo-random numbers. It became an important tool in nuclear medicine to assist in the design of new medical imaging devices, optimise their use and analyse their data. Presently, the sophistication of the simulation tools allows the introduction of Monte Carlo predictions in data correction and image reconstruction processes. The availability to simulate time dependent processes opens up new horizons for Monte Carlo simulation in nuclear medicine. In a near future, these developments will allow to tackle simultaneously imaging and dosimetry issues and soon, case system Monte Carlo simulations may become part of the nuclear medicine diagnostic process. This paper describes some Monte Carlo method basics and the sampling methods that were developed for it. It gives a referenced list of different simulation software used in nuclear medicine and enumerates some of their present and prospective applications. (author)

  16. Una Amistad y una Vocacion: Carlos Sanmartin Barberi

    Directory of Open Access Journals (Sweden)

    Carlos Sanmartin Barberi

    1998-12-01

    fallecido en 1941, mirábamos preparaciones histopatológicas. Tengo en mi mente la imagen de su madre, doña María Barberi Lascano de Sanmartín, dama de apariencia frágil, pero de temple enérgico y de vasta cultura. Al Doctor Roberto Sanmartín padre, sólo lo puede conocer por las huellas de la labor científica desarrollada en el Hospital San Juan de Dios.

    En 1949 Carlos Sanmartín y quien les dirige la palabra, fuimos distinguidos con un fellowship del Consejo Británico y en septiembre de este año, después de un viaje accidentado, llegamos a Londres.

    Fuimos alojados en unas pensión ubicada en el barrio Kensington y durante la primera noche, Carlos sufrió un severísimo ataque de asma, que hizo necesario buscar ayuda médica en el hospital mas cercano.

    El tiempo a mi disposición no permite comentar en detalle el récord académico, las distinciones recibidas, la experiencia profesional y las numerosas y valiosas publicaciones del Doctor Carlos Sanmartín Barberi.

    Menciono solamente haber sido Jefe de Laboratorio, Instituto “Carlos Finlay” (hoy INAS de 1950 a 1953, del cual fue Director de 1982 a 1983, Profesor Jefe de la Sección de Virus, Facultad de Medicina, Universidad del Valle de 1955 a 1975, Profesor Jefe de Medicina Preventiva de la misma (1960-1964, Jefe de la Unidad de Virología, Centro Panamericano de Zoonosis, Organización Panamericana de la Salud, Ramos Mejía, Buenos Aires, Argentina...


  17. Paradiplomacia en las relaciones Chileno-Argentinas : la integración desde Coquimbo y San Juan

    NARCIS (Netherlands)

    Alvarez, M.

    2016-01-01

    The dissertation studies how non-central governments inserted themselves in the integration process between Argentina and Chile. As a case study, the link between the Argentinean province of San Juan and the Chilean region of Coquimbo was addressed through an extensive literature review and more

  18. El mayor laboratorio en física del mundo Juan Antonio Rubio, candidato a dirigir el CERN

    CERN Multimedia

    2007-01-01

    The spanish Government presented last Friday at the CERN Council Juan Antonio Rubio, as candidate for the post of Director General of CERN. It's the first time that the spanish Government proposes a candidate for the Direction of this international research center. (2/3 page)

  19. 75 FR 22836 - Notice of Intent To Prepare a Resource Management Plan for the Eastern Washington and San Juan...

    Science.gov (United States)

    2010-04-30

    ... DEPARTMENT OF THE INTERIOR Bureau of Land Management [LLORW00000 L16100000.DO0000; HAG10-0117] Notice of Intent To Prepare a Resource Management Plan for the Eastern Washington and San Juan Planning... Management, Interior. ACTION: Notice of Intent. SUMMARY: In compliance with the National Environmental Policy...

  20. Writing Virtue and Indigenous Rights: Juan Bautista De Pomar and the "Relación de Texcoco"

    Science.gov (United States)

    Espericueta, José

    2015-01-01

    In his "Relación de Texcoco," Juan Bautista de Pomar (c. 1535-90) takes a political and moral stance against Spanish colonialism in Texcoco and the entire viceroyalty of New Spain. Responding to the "Instrucción y memoria's" (1577) request for information about the history and cultural practices of local populations, Pomar…

  1. 77 FR 63289 - Foreign-Trade Zone 61-San Juan, PR, Application for Subzone, Coamo Property & Investments, LLC...

    Science.gov (United States)

    2012-10-16

    ... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [S-107-2012] Foreign-Trade Zone 61--San Juan, PR, Application for Subzone, Coamo Property & Investments, LLC, Coamo, PR An application has been submitted to the..., requesting special-purpose subzone status for the facility of Coamo Property & Investments, LLC, located in...

  2. 77 FR 75145 - Foreign-Trade Zone 61-San Juan, Puerto Rico; Application for Subzone; Sea World, Inc.; Guaynabo, PR

    Science.gov (United States)

    2012-12-19

    ... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [S-138-2012] Foreign-Trade Zone 61--San Juan, Puerto Rico; Application for Subzone; Sea World, Inc.; Guaynabo, PR An application has been submitted to the Foreign-Trade Zones Board (the Board) by the Puerto Rico Trade & Export Company, grantee of FTZ 61...

  3. Sequence Stratigraphy of the Dakota Sandstone, Eastern San Juan Basin, New Mexico, and its Relationship to Reservoir Compartmentalization; FINAL

    International Nuclear Information System (INIS)

    Varney, Peter J.

    2002-01-01

    This research established the Dakota-outcrop sequence stratigraphy in part of the eastern San Juan Basin, New Mexico, and relates reservoir quality lithologies in depositional sequences to structure and reservoir compartmentalization in the South Lindrith Field area. The result was a predictive tool that will help guide further exploration and development

  4. 78 FR 37789 - Juan Narcizo Oyervides-Campos, Inmate Number #86526-279, Correctional Institution Reeves I & II...

    Science.gov (United States)

    2013-06-24

    ... DEPARTMENT OF COMMERCE Bureau of Industry and Security Juan Narcizo Oyervides-Campos, Inmate... Order with the Under Secretary of Commerce for Industry and Security. The appeal must be filed within 45... the Internal Security Act of 1950 (50 U.S.C. 783(b)), or section 38 of the Arms Export Control Act (22...

  5. Advances in the knowledge of the mining geological anomaly uraniferous Medano Rico, Disc. Jachal, San Juan Province

    International Nuclear Information System (INIS)

    Matar, M.; Arroqui, A.; Wetten, A.; Banchig, P.; Iglesias, R.

    2010-01-01

    Preliminary results of research carried out in the area of ​​Medano Rico, Dto Jachal San Juan Province, under the project Implementation of a model for exploration of uranium in Pre cordillera describes this work. The research tasks are intended to deepen the knowledge of the area to establish a genetic model of uranium anomaly

  6. 75 FR 55347 - Notice of Realty Action: Competitive Sale of Public Land Near Aztec in San Juan County, NM

    Science.gov (United States)

    2010-09-10

    ... city limits in San Juan County, New Mexico. The sale will be subject to the applicable provisions of... sealed bids equal to or greater than the appraised fair market value of the land. Bidders who submit..., Suite A, Farmington, New Mexico 87401. Sealed bids must also be submitted to this address. Supplemental...

  7. Sequence Stratigraphy of the Dakota Sandstone, Eastern San Juan Basin, New Mexico, and its Relationship to Reservoir Compartmentalization

    Energy Technology Data Exchange (ETDEWEB)

    Varney, Peter J.

    2002-04-23

    This research established the Dakota-outcrop sequence stratigraphy in part of the eastern San Juan Basin, New Mexico, and relates reservoir quality lithologies in depositional sequences to structure and reservoir compartmentalization in the South Lindrith Field area. The result was a predictive tool that will help guide further exploration and development.

  8. Juan Ruiz, Arcipreste de Hita, y Don Juan Manuel, Infante de Castilla : dos miradas para un mundo en crisis o la literatura como herramienta

    Directory of Open Access Journals (Sweden)

    Matías Escalera Cordero

    2007-12-01

    Full Text Available Hace unos años -en el cuarto número de Verba Hispanica-, en un trabajo titulado Juan Ruiz, un hombre de nuestro tiempo -fundamentado en lo sustancial por las lecturas que del Libro de buen amor, y de la figura de su autor, habían hecho Américo Castro y Jullio Rodríguez Puértolas -, comprobamos cómo la premeditada -y, en absoluto, casualcomplejidad interna del Libro se cimienta no sólo en la diversidad de los materiales que contiene y lo construyen, sino, sobre todo, en la unidad de sentido, que podríamos nombrar proto/novelesca, del conjunto entero: articulada, primero, en tomo de la "ficción realista" -psicológica- del yo literario que los informa; en la lógica –intensamente dialéctica- que los organiza; y, finalmente, en la radical ironía mediante la que el autor desentraña y desactiva todos y cada uno de los -engañosos- discursos artísticos, religiosos e ideológicos dominantes en su tiempo; especialmente, el cortesano, el clerical y el monetario.

  9. Estudio de las conductas prosociales en niños de San Juan de Pasto/ Prosocial Behaviors Study in Children San Juan de Pasto

    Directory of Open Access Journals (Sweden)

    Érika Alexandra Vásquez Arteaga

    2017-06-01

    Full Text Available Objetivo: El presente artículo es el resultado de una investigación finalizada desarrollada en tres escuelas públicas de San Juan de Pasto. El objetivo general se dirigió a develar las manifestaciones de las conductas prosociales de los niños para el diseño e implementación de una estrategia psicopedagógica. Método: La metodología se abordó desde el paradigma cualitativo, con un enfoque crítico social, de tipo investigación-acción. El presente artículo corresponde a la fase hermenéutica de la investigación en donde se emplearon como técnicas de recolección de información: narrativas, entrevistas focalizadas, observaciones participantes y sociodramas. Resultados: Los resultados indicaron que la empatía puede ser vista como una señal de debilidad o como una constante necesaria de interacción; en las conductas de ayuda hay manifestaciones principalmente no altruistas y la cooperación se presenta de manera intermitente según los estímulos ambientales.

  10. Monte Carlo Codes Invited Session

    International Nuclear Information System (INIS)

    Trama, J.C.; Malvagi, F.; Brown, F.

    2013-01-01

    This document lists 22 Monte Carlo codes used in radiation transport applications throughout the world. For each code the names of the organization and country and/or place are given. We have the following computer codes. 1) ARCHER, USA, RPI; 2) COG11, USA, LLNL; 3) DIANE, France, CEA/DAM Bruyeres; 4) FLUKA, Italy and CERN, INFN and CERN; 5) GEANT4, International GEANT4 collaboration; 6) KENO and MONACO (SCALE), USA, ORNL; 7) MC21, USA, KAPL and Bettis; 8) MCATK, USA, LANL; 9) MCCARD, South Korea, Seoul National University; 10) MCNP6, USA, LANL; 11) MCU, Russia, Kurchatov Institute; 12) MONK and MCBEND, United Kingdom, AMEC; 13) MORET5, France, IRSN Fontenay-aux-Roses; 14) MVP2, Japan, JAEA; 15) OPENMC, USA, MIT; 16) PENELOPE, Spain, Barcelona University; 17) PHITS, Japan, JAEA; 18) PRIZMA, Russia, VNIITF; 19) RMC, China, Tsinghua University; 20) SERPENT, Finland, VTT; 21) SUPERMONTECARLO, China, CAS INEST FDS Team Hefei; and 22) TRIPOLI-4, France, CEA Saclay

  11. Advanced computers and Monte Carlo

    International Nuclear Information System (INIS)

    Jordan, T.L.

    1979-01-01

    High-performance parallelism that is currently available is synchronous in nature. It is manifested in such architectures as Burroughs ILLIAC-IV, CDC STAR-100, TI ASC, CRI CRAY-1, ICL DAP, and many special-purpose array processors designed for signal processing. This form of parallelism has apparently not been of significant value to many important Monte Carlo calculations. Nevertheless, there is much asynchronous parallelism in many of these calculations. A model of a production code that requires up to 20 hours per problem on a CDC 7600 is studied for suitability on some asynchronous architectures that are on the drawing board. The code is described and some of its properties and resource requirements ae identified to compare with corresponding properties and resource requirements are identified to compare with corresponding properties and resource requirements are identified to compare with corresponding properties and resources of some asynchronous multiprocessor architectures. Arguments are made for programer aids and special syntax to identify and support important asynchronous parallelism. 2 figures, 5 tables

  12. Adaptive Markov Chain Monte Carlo

    KAUST Repository

    Jadoon, Khan

    2016-08-08

    A substantial interpretation of electromagnetic induction (EMI) measurements requires quantifying optimal model parameters and uncertainty of a nonlinear inverse problem. For this purpose, an adaptive Bayesian Markov chain Monte Carlo (MCMC) algorithm is used to assess multi-orientation and multi-offset EMI measurements in an agriculture field with non-saline and saline soil. In the MCMC simulations, posterior distribution was computed using Bayes rule. The electromagnetic forward model based on the full solution of Maxwell\\'s equations was used to simulate the apparent electrical conductivity measured with the configurations of EMI instrument, the CMD mini-Explorer. The model parameters and uncertainty for the three-layered earth model are investigated by using synthetic data. Our results show that in the scenario of non-saline soil, the parameters of layer thickness are not well estimated as compared to layers electrical conductivity because layer thicknesses in the model exhibits a low sensitivity to the EMI measurements, and is hence difficult to resolve. Application of the proposed MCMC based inversion to the field measurements in a drip irrigation system demonstrate that the parameters of the model can be well estimated for the saline soil as compared to the non-saline soil, and provide useful insight about parameter uncertainty for the assessment of the model outputs.

  13. Importance iteration in MORSE Monte Carlo calculations

    International Nuclear Information System (INIS)

    Kloosterman, J.L.; Hoogenboom, J.E.

    1994-01-01

    An expression to calculate point values (the expected detector response of a particle emerging from a collision or the source) is derived and implemented in the MORSE-SGC/S Monte Carlo code. It is outlined how these point values can be smoothed as a function of energy and as a function of the optical thickness between the detector and the source. The smoothed point values are subsequently used to calculate the biasing parameters of the Monte Carlo runs to follow. The method is illustrated by an example that shows that the obtained biasing parameters lead to a more efficient Monte Carlo calculation

  14. Monte Carlo approaches to light nuclei

    International Nuclear Information System (INIS)

    Carlson, J.

    1990-01-01

    Significant progress has been made recently in the application of Monte Carlo methods to the study of light nuclei. We review new Green's function Monte Carlo results for the alpha particle, Variational Monte Carlo studies of 16 O, and methods for low-energy scattering and transitions. Through these calculations, a coherent picture of the structure and electromagnetic properties of light nuclei has arisen. In particular, we examine the effect of the three-nucleon interaction and the importance of exchange currents in a variety of experimentally measured properties, including form factors and capture cross sections. 29 refs., 7 figs

  15. Monte Carlo approaches to light nuclei

    Energy Technology Data Exchange (ETDEWEB)

    Carlson, J.

    1990-01-01

    Significant progress has been made recently in the application of Monte Carlo methods to the study of light nuclei. We review new Green's function Monte Carlo results for the alpha particle, Variational Monte Carlo studies of {sup 16}O, and methods for low-energy scattering and transitions. Through these calculations, a coherent picture of the structure and electromagnetic properties of light nuclei has arisen. In particular, we examine the effect of the three-nucleon interaction and the importance of exchange currents in a variety of experimentally measured properties, including form factors and capture cross sections. 29 refs., 7 figs.

  16. Importance iteration in MORSE Monte Carlo calculations

    International Nuclear Information System (INIS)

    Kloosterman, J.L.; Hoogenboom, J.E.

    1994-02-01

    An expression to calculate point values (the expected detector response of a particle emerging from a collision or the source) is derived and implemented in the MORSE-SGC/S Monte Carlo code. It is outlined how these point values can be smoothed as a function of energy and as a function of the optical thickness between the detector and the source. The smoothed point values are subsequently used to calculate the biasing parameters of the Monte Carlo runs to follow. The method is illustrated by an example, which shows that the obtained biasing parameters lead to a more efficient Monte Carlo calculation. (orig.)

  17. Monte carlo simulation for soot dynamics

    KAUST Repository

    Zhou, Kun

    2012-01-01

    A new Monte Carlo method termed Comb-like frame Monte Carlo is developed to simulate the soot dynamics. Detailed stochastic error analysis is provided. Comb-like frame Monte Carlo is coupled with the gas phase solver Chemkin II to simulate soot formation in a 1-D premixed burner stabilized flame. The simulated soot number density, volume fraction, and particle size distribution all agree well with the measurement available in literature. The origin of the bimodal distribution of particle size distribution is revealed with quantitative proof.

  18. Juan C

    African Journals Online (AJOL)

    Information Technology

    in the form in which the authors present their views on definition: besides the ... 25-89), John Stuart Mill (pp. ... I would like to focus on three of these which have ... topics discussed include the origin and original meaning of definition, word-.

  19. Utilisation de l'espace dans la communauté de San Juan

    Directory of Open Access Journals (Sweden)

    1975-01-01

    Full Text Available Quelques aspects de la mise en valeur et de l'exploitation agro-pastorale du terroir de San Juan sont présentés à l'aide d'une série de cartes et de tableaux: carte de l'intensité de l'utilisation annuelle de la terre, circuit annuel du bétail, système foncier, évolution de l'irrigation au cours de l'année, rotation des cultures à proximité du village, rotation de terres d'altitude, évolution du bétail et enfin systèmes de mise en valeur du sol, on étudie en conclusion deux types d'évolution possibles de ce village. -Una serie de mapas y de cuadros presenta algunos aspectos del manejo y de 1a explotación agropastoral del terruño de la Comunidad de San Juan, teniendo en cuenta las limitaciones naturales ,y socioculturales: mapa de la intensidad del uso anual de la tierra con respecto al riego, rotación del ganado durante el año, sistema predial, evolución del riego a lo largo del año, rotación de los cultivos entre los corrales ubicados cerca del pueblo, rotación de los cultivos en las tierras de altura, evolución del ganado y sistemas de uso del suelo. Se examinan en conclusión dos tipos de evolución posibles para el pueblo. Some aspects of agro-pastoral management and exploitation in the San Juan lands are presented with a series of maps and tables: map of annual land utilization intensity, annual cattle rotation, land tenure system, irrigation process during the year, rotation of crops near the village, rotation of altitude lands, cattle evolution and soil use systems. Finally, two possible types of evolution for this village are discussed.

  20. Evaluating wind power potential in the Spanish Antarctic Base (BAE); Evaluacion del Potencial Eolico en la Base Antartica Espanola Juan Carlos I

    Energy Technology Data Exchange (ETDEWEB)

    Arribas de Paz, L. M.; Garcia Barquero, C.; Navarro Montesinos, J.; Cuerva Tejero, A.; Cruz Cruz, I.; Roque Lopez, V.; Marti Perez, I. [Ciemat. Madrid (Spain)

    2000-07-01

    The objective of the work is to model wind field in the surroundings of the Spanish Antarctic Base (BAE in the following). The need of such a work comes from the necessity of an energy source able to supply the energy demand in the BAE during the Antarctic winter. When the BAE is in operation (in the Antarctic summer) the energy supply comes from a diesel engine. In the Antartic winter the base is closed, but the demand of energy supply is growing up every year because of the increase in the number of technical and scientific machines that remain in the BAE taking different measurements. For this purpose the top of a closed hill called Pico Radio, not perturbed by close obstacles, has been chosen as the better site for the measurements. The measurement station is made up with a sonic an-emometer and a small wind generator to supply the energy needed by the sensors head heating of the anemometer. this way, it will be also used as a proof for the suitability of a wind generator in the new chosen site, under those special climactic conditions. (Author) 3 refs.

  1. Mestizaje y nacionalismo en la tierra en armas de Dávalos / Serrano y en algunos ensayos de Juan Carlos Dávalos.

    Directory of Open Access Journals (Sweden)

    Elisa Moyano

    2003-01-01

    Full Text Available El presente trabajo realiza un análisis de La tierra en armas, Los gauchos y “Gauchos y collas” en los que algunos personajes se presentan elaborados desde el paradigma del mestizaje. Los textos no constituyen descripciones del mestizo, del mestizaje o del proceso de su constitución (aunque los ensayos hacen pequeños aportes en este sentido como las realizadas por Uslar Pietri o por Fernando Ortiz. Se trata (y ésta es nuestra hipótesis de textos donde se construyen mestizos ideales para proponerlos como figuras de identificación en el marco de una doctrina política: el nacionalismo. El análisis se hizo siguiendo el modelo teórico-metodológico que Cornejo Polar utiliza para “desenmascarar” el hispanismo de la tesis de Riva Agüero sobre el Inca Garcilaso. A partir de comparaciones con las figuras mestizas construidas en otros textos, se encontraron similitudes con las de Riva Agüero con lo que se pensó en una posible raíz andina de los textos davalianos; pero se llegó a la conclusión de que éstos: 1.- están informados por un nacionalismo fuertemente hispanista a la manera de Manuel Gálvez y no al modo helenizante de Lugones 2.- están atravesados por un tenaz antiindigenismo, en las antípodas de una posición como la de Ricardo Rojas que daba importancia también a la vertiente indígena del mestizaje. Finalmente y a manera de conclusión se discute si, a comienzos del siglo XXI, tiene sentido “denunciar” hispanismo. O si, realizada en tantos ensayos la ponderación del mestizaje como característica de Hispanoamérica (aún cuando se haga sobresalir la vertiente hispana del mismo no sería preferible: 1.- ubicar los textos en sus condiciones productivas; 2.- preguntar por el lugar enunciativo desde dónde se “desenmascara” el hispanismo; 3.- ver si en los enunciados no se está estigmatizando todavía a España que —a diferencia de otras potencias imperiales— hizo posible la mezcla, y finalmente 4.- observar si, al enunciar así, el que habla no se convierte en seguidor acrítico de las ideas novecentistas de la superioridad de las razas puras y en cómplice de los nuevos imperios.

  2. Las tradiciones revolucionarias y el género policial argentino : Una lectura de Los muros azules, de Juan Carlos Martelli

    OpenAIRE

    Feuillet, Lucía

    2017-01-01

    Analizaremos cómo en novela policial que abordamos se cuenta una revolución poniendo discusión conceptos centrales del marxismo (el Estado, las clases, las etapas del capitalismo), que orientan, a su vez, un modo de leer la historia delictiva que va por detrás. La introducción del espionaje a partir del tejido de redes de comercio ilegal internacional, centrado en las Antillas, donde se activa una rebelión independentista con elementos socialistas, impone la búsqueda de nuevos instrumentos pa...

  3. 11th International Conference on Monte Carlo and Quasi-Monte Carlo Methods in Scientific Computing

    CERN Document Server

    Nuyens, Dirk

    2016-01-01

    This book presents the refereed proceedings of the Eleventh International Conference on Monte Carlo and Quasi-Monte Carlo Methods in Scientific Computing that was held at the University of Leuven (Belgium) in April 2014. These biennial conferences are major events for Monte Carlo and quasi-Monte Carlo researchers. The proceedings include articles based on invited lectures as well as carefully selected contributed papers on all theoretical aspects and applications of Monte Carlo and quasi-Monte Carlo methods. Offering information on the latest developments in these very active areas, this book is an excellent reference resource for theoreticians and practitioners interested in solving high-dimensional computational problems, arising, in particular, in finance, statistics and computer graphics.

  4. Quantum Monte Carlo approaches for correlated systems

    CERN Document Server

    Becca, Federico

    2017-01-01

    Over the past several decades, computational approaches to studying strongly-interacting systems have become increasingly varied and sophisticated. This book provides a comprehensive introduction to state-of-the-art quantum Monte Carlo techniques relevant for applications in correlated systems. Providing a clear overview of variational wave functions, and featuring a detailed presentation of stochastic samplings including Markov chains and Langevin dynamics, which are developed into a discussion of Monte Carlo methods. The variational technique is described, from foundations to a detailed description of its algorithms. Further topics discussed include optimisation techniques, real-time dynamics and projection methods, including Green's function, reptation and auxiliary-field Monte Carlo, from basic definitions to advanced algorithms for efficient codes, and the book concludes with recent developments on the continuum space. Quantum Monte Carlo Approaches for Correlated Systems provides an extensive reference ...

  5. Monte Carlo simulations for plasma physics

    International Nuclear Information System (INIS)

    Okamoto, M.; Murakami, S.; Nakajima, N.; Wang, W.X.

    2000-07-01

    Plasma behaviours are very complicated and the analyses are generally difficult. However, when the collisional processes play an important role in the plasma behaviour, the Monte Carlo method is often employed as a useful tool. For examples, in neutral particle injection heating (NBI heating), electron or ion cyclotron heating, and alpha heating, Coulomb collisions slow down high energetic particles and pitch angle scatter them. These processes are often studied by the Monte Carlo technique and good agreements can be obtained with the experimental results. Recently, Monte Carlo Method has been developed to study fast particle transports associated with heating and generating the radial electric field. Further it is applied to investigating the neoclassical transport in the plasma with steep gradients of density and temperatures which is beyong the conventional neoclassical theory. In this report, we briefly summarize the researches done by the present authors utilizing the Monte Carlo method. (author)

  6. Frontiers of quantum Monte Carlo workshop: preface

    International Nuclear Information System (INIS)

    Gubernatis, J.E.

    1985-01-01

    The introductory remarks, table of contents, and list of attendees are presented from the proceedings of the conference, Frontiers of Quantum Monte Carlo, which appeared in the Journal of Statistical Physics

  7. Monte Carlo code development in Los Alamos

    International Nuclear Information System (INIS)

    Carter, L.L.; Cashwell, E.D.; Everett, C.J.; Forest, C.A.; Schrandt, R.G.; Taylor, W.M.; Thompson, W.L.; Turner, G.D.

    1974-01-01

    The present status of Monte Carlo code development at Los Alamos Scientific Laboratory is discussed. A brief summary is given of several of the most important neutron, photon, and electron transport codes. 17 references. (U.S.)

  8. "Shaakal" Carlos kaebas arreteerija kohtusse / Margo Pajuste

    Index Scriptorium Estoniae

    Pajuste, Margo

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 3. juuli lk. 11. Vangistatud kurikuulus terrorist "Shaakal" Carlos alustas kohtuasja oma kunagise vahistaja vastu. Ta süüdistab Prantsusmaa luureteenistuse endist juhti inimröövis

  9. Experience with the Monte Carlo Method

    Energy Technology Data Exchange (ETDEWEB)

    Hussein, E M.A. [Department of Mechanical Engineering University of New Brunswick, Fredericton, N.B., (Canada)

    2007-06-15

    Monte Carlo simulation of radiation transport provides a powerful research and design tool that resembles in many aspects laboratory experiments. Moreover, Monte Carlo simulations can provide an insight not attainable in the laboratory. However, the Monte Carlo method has its limitations, which if not taken into account can result in misleading conclusions. This paper will present the experience of this author, over almost three decades, in the use of the Monte Carlo method for a variety of applications. Examples will be shown on how the method was used to explore new ideas, as a parametric study and design optimization tool, and to analyze experimental data. The consequences of not accounting in detail for detector response and the scattering of radiation by surrounding structures are two of the examples that will be presented to demonstrate the pitfall of condensed.

  10. Experience with the Monte Carlo Method

    International Nuclear Information System (INIS)

    Hussein, E.M.A.

    2007-01-01

    Monte Carlo simulation of radiation transport provides a powerful research and design tool that resembles in many aspects laboratory experiments. Moreover, Monte Carlo simulations can provide an insight not attainable in the laboratory. However, the Monte Carlo method has its limitations, which if not taken into account can result in misleading conclusions. This paper will present the experience of this author, over almost three decades, in the use of the Monte Carlo method for a variety of applications. Examples will be shown on how the method was used to explore new ideas, as a parametric study and design optimization tool, and to analyze experimental data. The consequences of not accounting in detail for detector response and the scattering of radiation by surrounding structures are two of the examples that will be presented to demonstrate the pitfall of condensed

  11. Monte Carlo Transport for Electron Thermal Transport

    Science.gov (United States)

    Chenhall, Jeffrey; Cao, Duc; Moses, Gregory

    2015-11-01

    The iSNB (implicit Schurtz Nicolai Busquet multigroup electron thermal transport method of Cao et al. is adapted into a Monte Carlo transport method in order to better model the effects of non-local behavior. The end goal is a hybrid transport-diffusion method that combines Monte Carlo Transport with a discrete diffusion Monte Carlo (DDMC). The hybrid method will combine the efficiency of a diffusion method in short mean free path regions with the accuracy of a transport method in long mean free path regions. The Monte Carlo nature of the approach allows the algorithm to be massively parallelized. Work to date on the method will be presented. This work was supported by Sandia National Laboratory - Albuquerque and the University of Rochester Laboratory for Laser Energetics.

  12. A continuation multilevel Monte Carlo algorithm

    KAUST Repository

    Collier, Nathan; Haji Ali, Abdul Lateef; Nobile, Fabio; von Schwerin, Erik; Tempone, Raul

    2014-01-01

    We propose a novel Continuation Multi Level Monte Carlo (CMLMC) algorithm for weak approximation of stochastic models. The CMLMC algorithm solves the given approximation problem for a sequence of decreasing tolerances, ending when the required error

  13. Simulation and the Monte Carlo method

    CERN Document Server

    Rubinstein, Reuven Y

    2016-01-01

    Simulation and the Monte Carlo Method, Third Edition reflects the latest developments in the field and presents a fully updated and comprehensive account of the major topics that have emerged in Monte Carlo simulation since the publication of the classic First Edition over more than a quarter of a century ago. While maintaining its accessible and intuitive approach, this revised edition features a wealth of up-to-date information that facilitates a deeper understanding of problem solving across a wide array of subject areas, such as engineering, statistics, computer science, mathematics, and the physical and life sciences. The book begins with a modernized introduction that addresses the basic concepts of probability, Markov processes, and convex optimization. Subsequent chapters discuss the dramatic changes that have occurred in the field of the Monte Carlo method, with coverage of many modern topics including: Markov Chain Monte Carlo, variance reduction techniques such as the transform likelihood ratio...

  14. Hybrid Monte Carlo methods in computational finance

    NARCIS (Netherlands)

    Leitao Rodriguez, A.

    2017-01-01

    Monte Carlo methods are highly appreciated and intensively employed in computational finance in the context of financial derivatives valuation or risk management. The method offers valuable advantages like flexibility, easy interpretation and straightforward implementation. Furthermore, the

  15. Aprender a ser narco/macho. Fiesta en La Madriguera de Juan Pablo Villalobos

    Directory of Open Access Journals (Sweden)

    Ainhoa Vásquez Mejías

    2016-06-01

    Full Text Available Este artículo propone, a la luz de los estudiosde masculinidades, que las enseñanzas que recibe un narco-junior en la novela Fiesta en la madriguera de Juan Pablo Villalobos se vinculan a las instrucciones machistas que reciben los niños varones: violencia, poder, control de las emociones. El aprendizaje del niño para convertirse en hombre, sin embargo, se ve cuestionado en la novela, a la vez que se pone en duda la masculinidad hegemónica del padre. La formación de Tochtli concluye no cuando es capaz de derramar sangre como un macho, sino cuando descubre que esa sangre lo une a su padre.

  16. Monitoreo de la calidad de datos GPS continuo: la estacion UNSJ (San Juan, Argentina

    Directory of Open Access Journals (Sweden)

    Alfredo Herrada

    2010-06-01

    Full Text Available Como parte de la red de referencia de operación continua de Argentina, la estación GPS (Global Positioning System denominada UNSJ (Universidad Nacional de San Juan fue establecida en la ciudad de San Juan el 6 de Marzo de 2007. Los datos registrados de UNSJ son ampliamente utilizados en aplicaciones catastrales, y sirven como base para la definición de los marcos de referencia geodésicos nacional y regional. Como una componente fundamental de la infraestructura geodésica, resulta conveniente un eficiente control de calidad de los datos crudos y el monitoreo de la estabilidad de una estación GPS de referencia. En este trabajo se presentan los resultados del control de calidad de las observaciones UNSJ luego de dos anos de operación. Para contro l ar y caracterizar el desempeno del receptor GPS y además el medio ambiente de la estación, se eligieron cuatro índices. Ellos son el número de observaciones, multicamino en L1, multicamino en L2 y ocurrencia de saltos de ciclos. También, se evaluó la estabilidad de largo término de la estación UNSJ a través del análisis de las series temporales de las coordenadas semanales provistas por los centros de cálculo SIRGAS (Sistema de Referencia Geocéntrico para las Américas. Completa este estudio el análisis de las coordenadas calculadas por distintos servicios de procesamiento disponibles en Internet. Nuestros resultados indican que durante el período analizado, el funcionamiento de la estación UNSJ fue satisfactorio, produciendo índices de calidad que son aceptables para estándares internacionales.As a part of the Argentine continuously operating reference station network, a GPS (Global Positioning System station named UNSJ (Universidad Nacional de San Juan was established in San Juan city on 6th March 2007. The recorded data of UNSJ are widely applied to cadastral surveys and serve as the basis for defining national and regional geodetic reference frames. As a key component of the

  17. Self Portrait of a Courtier: Juan Boscán, Inca Garcilaso’s Model

    Directory of Open Access Journals (Sweden)

    Marta Ortiz Canseco

    2017-11-01

    Full Text Available This text focuses on a chief masterpiece of the Renaissance, Castiglione’s The Book of the Courtier, and aims to identify its influence on Inca Garcilaso’s work. Considering that he had this book in his library, we will examine the different levels of influence of Castiglione’s work, especially the translation into Spanish by the poet Juan Boscán. This study will address not only the importance of the translator, but also the significance of a piece that brought together all the ideals of the Renaissance: the perfect courtier’s form, style and attitude are omnipresent in Inca Garcilaso’s work and life.

  18. Operatic films: a comparative study of Don Giovanni by Joseph Losey and Juan by Kasper Holten

    Directory of Open Access Journals (Sweden)

    Isabel VILLANUEVA BENITO

    2017-12-01

    Full Text Available From an artistic point of view, the adaptation of an opera to the cinema, traditionally has been considered a complex and controversial process. Don Giovanni, of W.A. Mozart is one of the operas that more audiovisual versions has generated during the centuries XX and XXI, although very few films have finally been taken to the screen. This paper is focused on comparing the audiovisual versions Don Giovanni, by Joseph Losey (1979, and Juan by Kasper Holten (2010. Through a quantitative and qualitative methodology based on content analysis, this research reflects on the degree of intervention exercised by the language and audiovisual format used in the process of reinterpretation of the pre-existing operatic text.

  19. San Juan National Forest Land Management Planning Support System (LMPSS) requirements definition

    Science.gov (United States)

    Werth, L. F. (Principal Investigator)

    1981-01-01

    The role of remote sensing data as it relates to a three-component land management planning system (geographic information, data base management, and planning model) can be understood only when user requirements are known. Personnel at the San Juan National Forest in southwestern Colorado were interviewed to determine data needs for managing and monitoring timber, rangelands, wildlife, fisheries, soils, water, geology and recreation facilities. While all the information required for land management planning cannot be obtained using remote sensing techniques, valuable information can be provided for the geographic information system. A wide range of sensors such as small and large format cameras, synthetic aperture radar, and LANDSAT data should be utilized. Because of the detail and accuracy required, high altitude color infrared photography should serve as the baseline data base and be supplemented and updated with data from the other sensors.

  20. La obra gráfica de Juan Carandell Pericay (I)

    OpenAIRE

    Naranjo-Ramírez, J.

    2007-01-01

    Revisión completa y exhaustiva de la obra gráfica del geólogo y geógrafo Juan Carandell (1893-1937). A través de dos artículos, publicados en sucesivos números de la misma revista, se procedió a la identificación, catalogación y clasificación de todos sus gráficos, mayoritariamente de carácter científico, así como a una restauración de los mismos; finalmente se ha realizado el estudio de toda esta producción gráfica, aportando en buen número de casos también la reproducción física en el seno ...

  1. La obra gráfica de Juan Carandell Pericay (y II)

    OpenAIRE

    Naranjo-Ramírez, J.

    2007-01-01

    Revisión completa y exhaustiva de la obra gráfica del geólogo y geógrafo Juan Carandell (1893-1937). A través de dos artículos, publicados en sucesivos números de la misma revista, se procedió a la identificación, catalogación y clasificación de todos sus gráficos, mayoritariamente de carácter científico, así como a una restauración de los mismos; finalmente se ha realizado el estudio de toda esta producción gráfica, aportando en buen número de casos también la reproducción física en el seno ...

  2. La obra psicológica de Juan Cuatrecasas Arumí, (1899-1990)

    OpenAIRE

    Kurowski, Maristela

    2001-01-01

    Se examina y evalúa la obra psicobiológica de Juan Cuatrecasas, médico español exiliado por motivo de la guerra civil a Argentina. Cuatrecasas inició su vida científica en la Escuela de Barcelona bajo tutoría de Augusto Pi Suñer. En el desarrollo de su vida profesional sigue la línea holística de investigación, característica de esta Escuela. En España fue Catedrático de la Facultad de Medicina de Barcelona. Luego en Argentina fue profesor titular de la Cátedra de Antropología Cultural de la ...

  3. Violência e sociedade em Festa no Covil, de Juan Pablo Villalobos

    Directory of Open Access Journals (Sweden)

    Andre Rezende Benatti

    2014-12-01

    Full Text Available O presente artigo tem como objetivo uma leitura da violência no romance Festa no Covil, do escritor mexicano Juan Pablo Villalobos. Abordaremos dentre outras questões como a violência se torna parte da rotina do pequeno narrador do romance, Tochtli, tornando-se não mais uma surpresa ou estranheza ou repulsa, mas algo corriqueiro que o acompanha diariamente. No romance, Tochtli é o herdeiro de um cartel de narcotráfico e é criado em um meio no qual a violência está tão presente que o menino não a percebe. Para a leitura nos valeremos de conceitos de Ronaldo Lima Lins (1990 e José Ovejero (2012.

  4. Juan de Pitano y Bolívar, platero vitoriano del siglo XVI

    Directory of Open Access Journals (Sweden)

    Martín Vaquero, Rosa

    1997-03-01

    Full Text Available Juan de Pitano y Bolívar is one of the most important silversmiths of the second half of the 16th century in Vitoria. He was the successor to one of Vitoria's oldest silversmiths which had its origins in the previous century. Here we provide a biography of the man and present ten pieces of his work in which we are able to appreciated their quality together with the artistic techniques employed. All of the pieces bear his mark: PI/TANO. He was a master of his art and participated in all three of the styles which dominated the art of the silversmith in the 16th century: Gothic, Renaissance and Mannerism.No disponible

  5. Antropología y cuidados en el enfoque de San Juan de Dios

    Directory of Open Access Journals (Sweden)

    Genival Fernandes de Freitas

    Full Text Available El objetivo de esta investigación de carácter histórico-social, consiste en contribuir a la reflexión crítica sobre el origen y desarrollo de la cultura de los cuidados en el contexto socio-político y religioso del renacimiento español (siglo XVI desde la perspectiva de la orden mendicante de San Juan de Dios. La filosofía humanística o antropológica de la enfermería, en la perspectiva mencionada, implicaba potenciar la atención holística en el proceso de satisfacción de necesidades de los pacientes considerando el binomio hospitalidad-humanización de la asistencia.

  6. Sustainable development and culture - Some reflections for their search in the Alto San Juan

    International Nuclear Information System (INIS)

    Giraldo Restrepo, Aida

    2000-01-01

    The economic processes in the upstream San Juan River are determined by decisions taken in cultural frames in which the traditional groups and peasants build in hybrid forms of existence according with their own history and the availability of resources in the territory. In this way, they alternate different production systems that introduce them in different social and economic groups: local, zonal, regional, national and trans national; each one with a specific rationality, impacting in a particular way, in agreement with the system of dominant production over the environment. The features of the society and culture that impact the economic decision making can be revealed and strengthened in a coherent strategy that respects the regional and group specificities and that looks for the sustainable development of the region

  7. La protesta social en el primer gobierno de Juan Manuel Santos

    Directory of Open Access Journals (Sweden)

    Edwin Cruz Rodríguez

    2014-09-01

    Full Text Available In this paper, social protest phenomenon during Juan Manuel Santos’ first term is analyzed using political processes approach to study social movements. During Santos’ administration, free trade agreements and the “mining-energy locomotive” initiatives have spurred protests since they have brought perverse consequences to rural, education, and health sectors. Nonetheless, protests are not explained as a reaction of economic dynamics, but as a complex articulation between a favorable context —produced by the change in style between the previous administration (Uribe 2002-2010 and Santos’ one, hence, creating expectations and opportunities towards protestin —, and the active role of people mobilizing, which is expressed by the shaping of mobilization structures and the creation of novelty frameworks for collective action.

  8. JUAN DE BALTASAR ABISSINIO Y LA LITERATURA HISPANOAFRICANA EN EL SIGLO XVII

    Directory of Open Access Journals (Sweden)

    Dr. Antoine Bouba KIDAKOU

    2011-05-01

    Full Text Available The community of destinies, as well as the varied historical meetings along the time between notable Spanish representatives and representatives of the African continent have exercised a profound influence over several aspects of the Hispanic-African cultural confluences. Unfortunately, these aspects have retained the critics' attention just for a little while, despite the numerous documents that exist in Spain about African black people. These last ones were already writing in Spanish, following the example of the Ethiopian Juan de Baltasar Abissino, starting right with the 17th century. The present article sets itself to explore a few ways of investigating the Hispanic Negro-African Literature from the 17th century.

  9. Effects of uranium development on erosion and associated sedimentation in southern San Juan Basin, New Mexico

    Science.gov (United States)

    Cooley, Maurice E.

    1979-01-01

    A reconnaissance was made of some of the effects of uranium development on erosion and associated sedimentation in the southern San Juan Basin, where uranium development is concentrated. In general, the effects of exploration on erosion are minor, although erosion may be accelerated by the building of access roads, by activities at the drilling sites, and by close concentration of drilling sites. Areas where the greatest effects on erosion and sedimentation from mining and milling operations have occurred are: (1) in the immediate vicinity of mines and mills, (2) near waste piles, and (3) in stream channels where modifications, such as changes in depth have been caused by discharge of excess mine and mill water. Collapse of tailings piles could result in localized but excessive erosion and sedimentation.

  10. LCG Monte-Carlo Data Base

    CERN Document Server

    Bartalini, P.; Kryukov, A.; Selyuzhenkov, Ilya V.; Sherstnev, A.; Vologdin, A.

    2004-01-01

    We present the Monte-Carlo events Data Base (MCDB) project and its development plans. MCDB facilitates communication between authors of Monte-Carlo generators and experimental users. It also provides a convenient book-keeping and an easy access to generator level samples. The first release of MCDB is now operational for the CMS collaboration. In this paper we review the main ideas behind MCDB and discuss future plans to develop this Data Base further within the CERN LCG framework.

  11. Multilevel Monte Carlo in Approximate Bayesian Computation

    KAUST Repository

    Jasra, Ajay

    2017-02-13

    In the following article we consider approximate Bayesian computation (ABC) inference. We introduce a method for numerically approximating ABC posteriors using the multilevel Monte Carlo (MLMC). A sequential Monte Carlo version of the approach is developed and it is shown under some assumptions that for a given level of mean square error, this method for ABC has a lower cost than i.i.d. sampling from the most accurate ABC approximation. Several numerical examples are given.

  12. Monte Carlo method applied to medical physics

    International Nuclear Information System (INIS)

    Oliveira, C.; Goncalves, I.F.; Chaves, A.; Lopes, M.C.; Teixeira, N.; Matos, B.; Goncalves, I.C.; Ramalho, A.; Salgado, J.

    2000-01-01

    The main application of the Monte Carlo method to medical physics is dose calculation. This paper shows some results of two dose calculation studies and two other different applications: optimisation of neutron field for Boron Neutron Capture Therapy and optimization of a filter for a beam tube for several purposes. The time necessary for Monte Carlo calculations - the highest boundary for its intensive utilisation - is being over-passed with faster and cheaper computers. (author)

  13. Climate change, heat, and mortality in the tropical urban area of San Juan, Puerto Rico

    Science.gov (United States)

    Méndez-Lázaro, Pablo A.; Pérez-Cardona, Cynthia M.; Rodríguez, Ernesto; Martínez, Odalys; Taboas, Mariela; Bocanegra, Arelis; Méndez-Tejeda, Rafael

    2016-12-01

    Extreme heat episodes are becoming more common worldwide, including in tropical areas of Australia, India, and Puerto Rico. Higher frequency, duration, and intensity of extreme heat episodes are triggering public health issues in most mid-latitude and continental cities. With urbanization, land use and land cover have affected local climate directly and indirectly encouraging the Urban Heat Island effect with potential impacts on heat-related morbidity and mortality among urban populations. However, this association is not completely understood in tropical islands such as Puerto Rico. The present study examines the effects of heat in two municipalities (San Juan and Bayamón) within the San Juan metropolitan area on overall and cause-specific mortality among the population between 2009 and 2013. The number of daily deaths attributed to selected causes (cardiovascular disease, hypertension, diabetes, stroke, chronic lower respiratory disease, pneumonia, and kidney disease) coded and classified according to the Tenth Revision of the International Classification of Diseases was analyzed. The relations between elevated air surface temperatures on cause-specific mortality were modeled. Separate Poisson regression models were fitted to explain the total number of deaths as a function of daily maximum and minimum temperatures, while adjusting for seasonal patterns. Results show a significant increase in the effect of high temperatures on mortality, during the summers of 2012 and 2013. Stroke (relative risk = 16.80, 95% CI 6.81-41.4) and cardiovascular diseases (relative risk = 16.63, 95% CI 10.47-26.42) were the primary causes of death most associated with elevated summer temperatures. Better understanding of how these heat events affect the health of the population will provide a useful tool for decision makers to address and mitigate the effects of the increasing temperatures on public health. The enhanced temperature forecast may be a crucial component in decision

  14. U, Th, and Pb isotopes in hot springs on the Juan de Fuca Ridge

    International Nuclear Information System (INIS)

    Chen, J.H.

    1987-01-01

    The concentrations and isotopic compositions of U, Th, and Pb in three hydrothermal fluids from the Juan de Fuca Ridge were determined. The samples consisted of 10.2--57.6% of the pure hydrothermal end-members based on Mg contents. The Pb contents of the samples ranged from 34 to 87 ng/g, U from 1.3 to 3.0 ng/g, and Th from 0.2 to 7.7 pg/g. These samples showed large enrichments of Pb and Th relative to deep-sea water and some depletion of U. They did not show coherent relationships with Mg, however, indicating nonideal mixings between the hot hydrothermal fluids and cold ambient seawater. Particles filtered from these hydrothermal fluids contained significant amounts of Th and Pb which may effectively increase the concentration of these elements in the fluids when acidified. The /sup 234/U//sup 238/U values in all samples show a /sup 234/U enrichment relative to the equilibrium value and have a seawater signature. The Pb isotopic composition of the Juan de Fuca hydrothermal fluids resembles that of 21 0 N East Pacific Rise and has a uniform mid-ocean ridge basalt signature. The hydrothermal systems at oceanic spreading ridges have circulated through a large volume of basalts. Therefore Pb in these fluids may represent the best average value of the local oceanic crust. From the effects of U deposition from seawater to the crust and Pb extraction from rock to the ocean, the U/Pb ratio in the hydrothermally altered oceanic crust may be increased significantly. copyright American Geophysical Union 1987

  15. Climate change, heat, and mortality in the tropical urban area of San Juan, Puerto Rico

    Science.gov (United States)

    Méndez-Lázaro, Pablo A.; Pérez-Cardona, Cynthia M.; Rodríguez, Ernesto; Martínez, Odalys; Taboas, Mariela; Bocanegra, Arelis; Méndez-Tejeda, Rafael

    2018-05-01

    Extreme heat episodes are becoming more common worldwide, including in tropical areas of Australia, India, and Puerto Rico. Higher frequency, duration, and intensity of extreme heat episodes are triggering public health issues in most mid-latitude and continental cities. With urbanization, land use and land cover have affected local climate directly and indirectly encouraging the Urban Heat Island effect with potential impacts on heat-related morbidity and mortality among urban populations. However, this association is not completely understood in tropical islands such as Puerto Rico. The present study examines the effects of heat in two municipalities (San Juan and Bayamón) within the San Juan metropolitan area on overall and cause-specific mortality among the population between 2009 and 2013. The number of daily deaths attributed to selected causes (cardiovascular disease, hypertension, diabetes, stroke, chronic lower respiratory disease, pneumonia, and kidney disease) coded and classified according to the Tenth Revision of the International Classification of Diseases was analyzed. The relations between elevated air surface temperatures on cause-specific mortality were modeled. Separate Poisson regression models were fitted to explain the total number of deaths as a function of daily maximum and minimum temperatures, while adjusting for seasonal patterns. Results show a significant increase in the effect of high temperatures on mortality, during the summers of 2012 and 2013. Stroke (relative risk = 16.80, 95% CI 6.81-41.4) and cardiovascular diseases (relative risk = 16.63, 95% CI 10.47-26.42) were the primary causes of death most associated with elevated summer temperatures. Better understanding of how these heat events affect the health of the population will provide a useful tool for decision makers to address and mitigate the effects of the increasing temperatures on public health. The enhanced temperature forecast may be a crucial component in decision

  16. Surface Hydrological Processes of Rock Glaciated Basins in the San Juan Mountains, Colorado

    Science.gov (United States)

    Mateo, E. I.

    2017-12-01

    Glaciers in the western United States have been examined in terms of their summer meltwater contributions to regional hydrological systems. In the San Juan Mountains of Colorado where glaciers do not and cannot exist due to a rising zero-degree isotherm, rock glaciers take the place of valley glaciers during the summer runoff period. Most of the rock glaciers in Colorado are located on a northerly slope aspect, however, there are multiple in the southwest region of the state that occur on different aspects. This study asked how slope aspect and rising air temperatures influenced the hydrological processes of streams below rock glaciers in the San Juan Mountains during the 2016 summer season. This project focused on three basins, Yankee Boy basin, Blue Lakes basin, and Mill Creek basin, which are adjacent to each other and share a common peak, Gilpin Peak. Findings of this one-season study showed that air temperature significantly influenced stream discharge below each rock glacier. Discharge and air temperature patterns indicate a possible air temperature threshold during late summer when rock glacier melt increased at a greater rate. The results also suggest that slope aspect of rock glacier basins influences stream discharge, but temperature and precipitation are likely larger components of the melt regimes. The continuation of data collection during the 2017 summer season has allowed for more detailed analysis of the relationship between air temperature and rock glacier melt. This continual expansion of the original dataset is crucial for understanding the hydrological processes of surface runoff below rock glaciers.

  17. Hydrologic characteristics of lagoons at San Juan, Puerto Rico, during an October 1974 tidal cycle

    Science.gov (United States)

    Gómez-Gómez, Fernando; Ellis, S.R.

    1983-01-01

    Flow and water-quality changes were studied during a period of intense rainfall in the San Juan Lagoon system. The study covered a 25-hour period beginning 0900 hours 22 October, 1974. Precipitation during the study period averaged 70 millimeters. Sampling stations were located at Boca de Cangrejos, the main ocean outlet; Canal Pinones between Laguna de Pinones and Laguna La Torrecilla; Canal Suarez between Laguna San Jose, connects to Laguna La Torrecilla; and Cano de Martin Pena between Laguna San Jose and Bahia de San Juan. In addition water-elevation recording gages were installed at each lagoon. Water samples from the canal stations were analyzed for organic carbon, nitrogen and phosphorus species, and suspended sediment. Specific-conductance measurements were used with the chemical data to estimate the runoff contributions of nutrients. Runoff into the lagoon, system during the study period was about 2.8 million cubic meters, or about 70 percent of the average precipitation. The runoff contributed chemical loadings to the lagoons of 95,000 kilograms total-organic carbon; 2,700 kilograms of total phosphorus; and 10,000 kilograms of total Khjeldhal nitrogen. A comparison with a prior study during which there was no significant rain, show that dry-period loadings are less than 10 percent of the wet-period loadings. At the end of the study period the system had not reached equilibrium, and the lagoons retained 80 percent of the water inflows from 50 to 90 percent of the chemical loads. Nearly 95 percent of the water outflows occurred at the Boca de Cangrejos sea outlet. The three lagoons and interconnecting canals form a very complex hydraulic system that is difficult to study using traditional techniques. A model of the system will facilitate management to improve the quality of water in the lagoons.

  18. The nature of the Dakota-Morrison boundary, Southeastern San Juan basin

    International Nuclear Information System (INIS)

    Aubrey, W.M.

    1986-01-01

    A thin, discontinuous, fluvial locally conglomeratic sandstone at the vase of the Dakota Sandstone in the vicinity of the southeastern San Juan basin, New Mexico has been named the Encinal Canyon Member of the Dakota Sandstone. In the past, the sandstone beds, placed here in the Encinal Canyon, have been included in the Jackpile sandstone, (an economic unit in the Morrison Formation), in the Burro Canyon Formation, or in the Oak Canyon Member of the Dakota Sandstone. Distinction between the Encinal Canyon Member and the Jackpile sandstone, which are separated by an unconformity that probably spans most of the Early Cretaceous, is economically important. The Jackpile is a primary uranium exploration target, whereas the Dakota contains little known uranium. In the past, the sub-Dakota erosional surface in the southeastern San Juan basin generally was thought to be at the base of the marine and paralic Oak Canyon Member of the Dakota Sandstone, which overlies the Encinal Canyon Member. The unconformity is shown here to be at the base of the fluvial rocks of the Encinal Canyon Member. Local relief at the base of the Encinal Canyon indicates that the sub-Dakota erosional surface formed during a time of regional degradation. Easterly flowing streams scoured underlying units and in some places cut completely through the Jackpile sandstone and the Burro Canyon Formation. The Encinal Canyon was deposited in response to the initial transgression of the Dakota sea. As the sea inundated the area, a transgressive erosional surface formed, and the overlying paralic and marine sediments of the Oak Canyon Member were deposited

  19. Elemental composition of PM2.5 in the urban environment of San Juan, Argentina.

    Science.gov (United States)

    Aguilera Sammaritano, Mariela; Bustos, Daniel G; Poblete, Arnobio G; Wannaz, Eduardo D

    2018-02-01

    This study contributes to the current knowledge about air pollution in the province of San Juan, Argentina. Sampling was carried out to measure the fine particulate matter in the atmosphere (PM 2.5 ) of the city of San Juan. PM 2.5 was collected continuously during the winter and spring seasons of 2014 and 2015, and the concentrations of 14 elements (Pb, Ca, K, Cd, Ni, Cr, Mn, V, Cu, Ti, Ba, Co, Sr, and Fe) were determined in PM 2.5 filters using the technique of X-ray fluorescence by synchrotron radiation (SR-XRF). The results revealed that PM 2.5 presented annual and seasonal variations, showing a higher concentration during the winter seasons. In addition, for the elements quantified in the filters, a multivariate analysis (Positive Matrix Factorization) was performed to identify the main sources of emission of these elements in the study area, with a series of components being obtained that corresponded to their compositions, which were assigned physical meanings. The first factor, which was the most important in contribution of the sum of the measured elements (45%), was determined mainly by the elements K, Ti, V, Mn, and Fe, which came predominantly from soil particles. The second factor contributed 30% to the measured species in PM 2.5 , with higher Ba and Zn content perhaps being related to emissions from vehicular traffic. Finally, the third factor, in which Pb, Cr, and Ca predominated, may be an indicator of industrial activity and contributed 25% of the sum of the measured elements of PM 2.5 . The results of this study provide the first PM composition database in the province, and this can now be used in the development of mitigation and prevention programs.

  20. Ordovidan K-bentonites in the Precordillera of San Juan and its tectomasmatic significance

    Science.gov (United States)

    Cingolani, C.A.; Huff, W.; Bergstrom, S.; Kolata, D.

    1997-01-01

    A succession of approximately 35 early Middle Ordovician K-bentonite beds are exposed in the Precordillera region near the town of Jachal, in San Juan Province (at Cerro Viejo and La Chilca sections). They occur in argillaceous limestone in the upper part of the San Juan Limestone and in the interbedded shales and mudstones at the base of the overlying Los Azules Formation. Total thickness of the K-bentonite-bearing interval is 23 m and individual beds range from 1 to 65 cm thick. An essentially Arenig-Llanvirn age for the K-bentonite succession is indicated by the presence of graptolites diagnostic of the Paraglossograptus tentaculatus Zone and conodonts indicating the Eoplacognathus suecicus Zone. The bentonites consist mainly of Rl ordered illite/smectite, characteristic of most of the lower Paleozoic K-bentonites, plus volcanogenic crystals. Similar to other K-bentonites, these probably represent the distal, glass-rich portion of fall-out ash beds derived from collision zone explosive volcanism. The geochemical data and preliminary plots on the magmatic discrimination diagram indicate the parental magma was of rhyolite to trachyandesite composition. Tectonic discrimination diagrams show the setting of Cerro Viejo ash layers as falling on the boundary between volcanic arc and within plate rocks, typical of collision margin felsic volcanic rocks. U-Pb isotope dating for two zircon fractions from one sample show a lower concordia intercept of 461, +7-10 Ma coincident with the biostratigraphic age. Thus, they have important implications for the origin and early history of the allochtonous Precordillera terrane and the Pacific margin of South America. Furthermore, they are potentially important in interpretations of the paleogeographic relations of Laurentia and Gondwana during Ordovician time. ?? 1997 Asociacio??n Geolo??gica Argentina.

  1. Seafloor Uplift in Middle Valley, Juan de Fuca Ridge: New High-Resolution Pressure Data

    Science.gov (United States)

    Inderbitzen, K. E.; Becker, K.; Davis, E. E.

    2011-12-01

    Currently, in-situ seafloor and basement pressures are continuously monitored and recorded by an ODP subseafloor hydrogeological observatory (CORK) located in Middle Valley, Juan de Fuca Ridge. Hole 857D was drilled in 1991 in thickly sedimented crust to a depth of 936 mbsf and instrumented with an original CORK that was replaced in 1996. A large hydrothermal field (Dead Dog) lies roughly 1.7 km north of the hole, and two isolated chimneys and several diffuse flow sites are located ~800 meters northeast. The borehole and the vent fields have been visited periodically by submersible/ROV since 1999. Recent results from the CORK at 857D have shown apparent seafloor uplift, supported by depth records from the submersible Alvin. A constant rate of pressure change of ~6 kPa/yr, from its initiation in 2005 to the visit in 2010, has reduced mean seafloor pressure by ~28 kPa, equivalent to nearly 3 meters of head. This uplift rate is several times the typical pre-eruption inflation rates observed at Axial Seamount further south along the Juan de Fuca Ridge. Initially, the apparent uplift at 857D did not seem to have any effect on local high-temperature hydrothermal venting, however recent operations in Middle Valley revealed distinct changes at not only the hydrothermal field to the northeast, but also a shutdown of high-temperature venting to the north of 857D. We will present new data from Middle Valley, including the first year of data collected by a high-resolution pressure data logger deployed at 857D in June, 2010.

  2. Climate change, heat, and mortality in the tropical urban area of San Juan, Puerto Rico.

    Science.gov (United States)

    Méndez-Lázaro, Pablo A; Pérez-Cardona, Cynthia M; Rodríguez, Ernesto; Martínez, Odalys; Taboas, Mariela; Bocanegra, Arelis; Méndez-Tejeda, Rafael

    2018-05-01

    Extreme heat episodes are becoming more common worldwide, including in tropical areas of Australia, India, and Puerto Rico. Higher frequency, duration, and intensity of extreme heat episodes are triggering public health issues in most mid-latitude and continental cities. With urbanization, land use and land cover have affected local climate directly and indirectly encouraging the Urban Heat Island effect with potential impacts on heat-related morbidity and mortality among urban populations. However, this association is not completely understood in tropical islands such as Puerto Rico. The present study examines the effects of heat in two municipalities (San Juan and Bayamón) within the San Juan metropolitan area on overall and cause-specific mortality among the population between 2009 and 2013. The number of daily deaths attributed to selected causes (cardiovascular disease, hypertension, diabetes, stroke, chronic lower respiratory disease, pneumonia, and kidney disease) coded and classified according to the Tenth Revision of the International Classification of Diseases was analyzed. The relations between elevated air surface temperatures on cause-specific mortality were modeled. Separate Poisson regression models were fitted to explain the total number of deaths as a function of daily maximum and minimum temperatures, while adjusting for seasonal patterns. Results show a significant increase in the effect of high temperatures on mortality, during the summers of 2012 and 2013. Stroke (relative risk = 16.80, 95% CI 6.81-41.4) and cardiovascular diseases (relative risk = 16.63, 95% CI 10.47-26.42) were the primary causes of death most associated with elevated summer temperatures. Better understanding of how these heat events affect the health of the population will provide a useful tool for decision makers to address and mitigate the effects of the increasing temperatures on public health. The enhanced temperature forecast may be a crucial component in decision

  3. A interação existencial entre seres humanos e animais no romance Pedro Páramo, de Juan Rulfo = The existential interaction between human beings and animals in the novel Pedro Páramo by Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Evely Vânia Libanori

    2013-01-01

    Full Text Available Em Pedro Páramo, de Juan Rulfo, o corvo, o cavalo e o gato são animais que mantêm estreita ligação existencial com o ser humano. A interação ser humano-animal é fundamental para o entendimento de temas filosóficos presentes no romance, como a identidade humana, o outro, a morte. O corvo é o batedor da chegada de Juan Preciado no mundo da morte. O cavalo de Miguel Páramo é o único ser que sofre, verdadeiramente, a morte do seu tutor. O gato é o animal que faz visitas noturnas a Susana San Juan, com quem estabelece um diálogo somente inteligível para os dois. A integração entre personagens humanas e animais em Pedro Páramo mostra a comunicação entre seres pertencentes a diferentes espécies animais. No romance, seres humanos, corvos, cavalos e gatos têm mais semelhanças entre si do que a cultura ocidental antropocêntrica conhece.In Pedro Páramo by Juan Rulfo, the raven, the horse and the cat are animals that maintain a close existential link to the human beings. In the book, this human being/animal interaction is fundamental to the understanding of philosophical themes such as the identity, the other, and the death. In the story, the raven is the escort of Juan Preciado arrival into the death world. Miguel Páramos’s horse is the only being that genuinely suffers because of the death of its guardian, that is, Miguel’s death. The cat is the animal that make night visits to Susana San Juan to whom it speaks in a way that is understood by the two of them only. The connection between human and animal characters in Pedro Páramo shows the communication among beings that belong to different animal species. In the novel, human beings, ravens, horses, and cats are much more alike than the western anthropocentric culture has it.

  4. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: NESTS (Nest Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for bald eagle, great blue heron, and seabird nesting sites in Puget Sound and Strait of Juan de Fuca,...

  5. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: SOCECON (Socioeconomic Resource Points and Lines)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains points that represent the following sensitive human-use socioeconomic sites in Puget Sound and the Strait of Juan de Fuca, Washington: access...

  6. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: INVERT (Invertebrate Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for clams, oysters, crabs, and other invertebrate species in Puget Sound and Strait of Juan de Fuca,...

  7. Environmental Sensitivity Index (ESI) Atlas: Puget Sound and Strait of Juan de Fuca, maps and geographic information systems data (NODC Accession 0013952)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set comprises the Environmental Sensitivity Index (ESI) data for the Puget Sound and Strait of Juan de Fuca from 1978 to 2006. ESI data characterize...

  8. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: HABITATS (Habitat Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine and estuarine vegetation in Puget Sound and Strait of Juan de Fuca, Washington. Vector polygons...

  9. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: FISHL (Fish Lines)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine, estuarine, and anadromous fish in Puget Sound and Strait of Juan de Fuca, Washington. Vector...

  10. Sensitivity of Coastal Environments and Wildlife to Spilled Oil: Puget Sound and Strait of Juan de Fuca, Washington: MGT (Management Area Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains polygons that represent the following sensitive human-use management areas in Puget Sound and the Strait of Juan de Fuca, Washington:...

  11. Y se hizo la imagen del héroe nacional costarricense… Iconografía emblemática de Juan Santamaria.

    Directory of Open Access Journals (Sweden)

    Guillermo Brenes Tencio.

    2009-04-01

    Full Text Available This article presents an iconographic reading (interpretation of Costa Rica’s national hero, Juan Santamaría. It examines two types of visual representation: the bronze statue of Juan Santamaría as a soldier, designed by the French sculptor, Aristide Onésime Croisy (1840-1899; and the oil painting, La Quema del Mesón, by the Costa Rican artist, Enrique Echandi Montero (1866-1959.

  12. Monitoring organo chlorine pesticides in surface and ground water in San Juan (Argentina); Determinacion de pesticiddas organoclorados en aguas superficiales y subterraneas de la provincia de San Juan (Argentina)

    Energy Technology Data Exchange (ETDEWEB)

    Omar, B.; Suero, E.; Augusto, M.; Gimenez, M.; Flores, N.

    2003-07-01

    The level of contamination with organo chlorine pesticides and the occurrence of their degradation products in the basins of the two main rivers. San Juan and Jackal, of the Province of San Juan, Argentina, were determined. Surface and groundwater samples from both river basins were evaluated by capillary GC and results confirmed with Mass Spectrometry. Chemicals investigated were 16 organo chlorine pesticides. For a total number of 314 samples, the percentage of positive samples ranged from 68.6% for Heptachlor to 16% for Aldrin. concentration values and the percentage of positive samples in groundwater were significantly lower than those found in surface water. Samples taken in different seasons did not show significant differences. (Author) 18 refs.

  13. Arsenic contamination of natural waters in San Juan and La Pampa, Argentina.

    Science.gov (United States)

    O'Reilly, J; Watts, M J; Shaw, R A; Marcilla, A L; Ward, N I

    2010-12-01

    Arsenic (As) speciation in surface and groundwater from two provinces in Argentina (San Juan and La Pampa) was investigated using solid phase extraction (SPE) cartridge methodology with comparison to total arsenic concentrations. A third province, Río Negro, was used as a control to the study. Strong cation exchange (SCX) and strong anion exchange (SAX) cartridges were utilised in series for the separation and preservation of arsenite (As(III)), arsenate (As(V)), monomethylarsonic acid (MA(V)) and dimethylarsinic acid (DMA(V)). Samples were collected from a range of water outlets (rivers/streams, wells, untreated domestic taps, well water treatment works) to assess the relationship between total arsenic and arsenic species, water type and water parameters (pH, conductivity and total dissolved solids, TDS). Analysis of the waters for arsenic (total and species) was performed by inductively coupled plasma mass spectrometry (ICP-MS) in collision cell mode. Total arsenic concentrations in the surface and groundwater from Encon and the San José de Jáchal region of San Juan (north-west Argentina within the Cuyo region) ranged from 9 to 357 μg l(-1) As. Groundwater from Eduardo Castex (EC) and Ingeniero Luiggi (LU) in La Pampa (central Argentina within the Chaco-Pampean Plain) ranged from 3 to 1326 μg l(-1) As. The pH range for the provinces of San Juan (7.2-9.7) and La Pampa (7.0-9.9) are in agreement with other published literature. The highest total arsenic concentrations were found in La Pampa well waters (both rural farms and pre-treated urban sources), particularly where there was high pH (typically > 8.2), conductivity (>2,600 μS cm(-1)) and TDS (>1,400 mg l(-1)). Reverse osmosis (RO) treatment of well waters in La Pampa for domestic drinking water in EC and LU significantly reduced total arsenic concentrations from a range of 216-224 μg l(-1) As to 0.3-0.8 μg l(-1) As. Arsenic species for both provinces were predominantly As(III) and As(V). As

  14. Juan Rulfo, o no hay salvación ni en la vida ni en la muerte

    Directory of Open Access Journals (Sweden)

    Thomas C. Lyon

    2016-04-01

    Full Text Available A pesar de la secularización del siglo XX, Juan Rulfo aprovecha una rica tradición religiosa en todo lo que escribe. En el discurso religioso se destaca un fondo de culpabilidad, de deseo de confesar y recibir perdón, y de imposibilidad de cualquiera clase de salvación. Sin entender este fondo religioso el estudio de la obra de Rulfo queda incompleto.   Despide the secularization of the 20th century, Juan Rulfo makes use of a rich religious tradition in all his writings. A background of guilt, of the desire to confess and to be pardoned, and of the impossibility of any kind of salvation is emphasized in the religious discourse. If this religious background is not understood, any study of Rulfo's work is incomplete.

  15. Los cambios en la política social argentina y el impacto del terremoto de San Juan (1944

    Directory of Open Access Journals (Sweden)

    Pablo Buchbinder

    2014-10-01

    Full Text Available El objetivo del artículo consiste en analizar las consecuencias sociales y políticas del terremoto de San Juan. El estudio focaliza en tres aspectos: los relacionados con las colectas de dinero para las víctimas, con las políticas de vivienda y con la aparición de nuevas leyes de adopción de menores. Abstract  The aim of this paper is to analyze the social and political consequences of the earthquake in San Juan. The study focuses on three areas: those related to collecting money for victims with housing policies and the emergence of new child adoption laws.

  16. Successful vectorization - reactor physics Monte Carlo code

    International Nuclear Information System (INIS)

    Martin, W.R.

    1989-01-01

    Most particle transport Monte Carlo codes in use today are based on the ''history-based'' algorithm, wherein one particle history at a time is simulated. Unfortunately, the ''history-based'' approach (present in all Monte Carlo codes until recent years) is inherently scalar and cannot be vectorized. In particular, the history-based algorithm cannot take advantage of vector architectures, which characterize the largest and fastest computers at the current time, vector supercomputers such as the Cray X/MP or IBM 3090/600. However, substantial progress has been made in recent years in developing and implementing a vectorized Monte Carlo algorithm. This algorithm follows portions of many particle histories at the same time and forms the basis for all successful vectorized Monte Carlo codes that are in use today. This paper describes the basic vectorized algorithm along with descriptions of several variations that have been developed by different researchers for specific applications. These applications have been mainly in the areas of neutron transport in nuclear reactor and shielding analysis and photon transport in fusion plasmas. The relative merits of the various approach schemes will be discussed and the present status of known vectorization efforts will be summarized along with available timing results, including results from the successful vectorization of 3-D general geometry, continuous energy Monte Carlo. (orig.)

  17. El “Mundus Subterraneus” de Juan Ignacio Molina o el geólogo como economista

    Directory of Open Access Journals (Sweden)

    Orrego G., Francisco

    2015-12-01

    Full Text Available In general, the work of the Chilean ex Jesuit Juan Ignacio Molina (1740-1829 has not been studied under the light of history of geology. This article attempts to reconstruct the origin and morphology of the ideas in which the Chilean naturalist developed about the internal structure of the Earth. We will see how the geological ideas elaborated by Molina went beyond the scientific reflection. The development of a particular discipline as political economy during the eighteenth century also influenced Juan Ignacio Molina´s thoughts about the internal organization of the Earth, geological processes and the descriptions of the nature of Chilean kingdom in the late eighteenth century.En general, la obra del ex jesuita chileno Juan Ignacio Molina (1740-1829 no ha sido estudiada con profundidad a la luz de la historia de la geología. Este artículo reconstruye el origen y la morfología de parte de las ideas que el naturalista chileno elaboró sobre la estructura interna de la Tierra. Se verá cómo las ideas geológicas desarrolladas por Molina fueron más allá de la simple reflexión científica. El desarrollo de una disciplina particular y novedosa como la economía política, también influyó en el tipo de reflexiones que Juan Ignacio Molina desarrolló sobre la organización interior de la Tierra, los procesos geológicos y las descripciones sobre la naturaleza del Reino de Chile a fines del siglo XVIII.

  18. La atmósfera sicoantropológica en la novelística de Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Manuel Zapata Olivella

    1968-03-01

    Full Text Available Para penetrar en los valores artísticos de la obra de Juan Rulfo hay que asumir una expectativa eminentemente latinoamericana, y aún este vocablo habría que circunscribirlo al ámbito aún más regional de México, y ya dentro de este reducto a la visión del jaliciense.

  19. L’abominevole favola del progresso. I mostri di Juan Rodolfo Wilcock, tra comicità e orrore

    OpenAIRE

    Trifiro', Katia

    2016-01-01

    Il presente contributo intende esplorare le strategie di demistificazione grottesca impiegate da Juan Rodolfo Wilcock per ritrarre l’impasse culturale della società italiana degli anni Sessanta, catapultata nella vacua frenesia di un improvviso benessere. Attraverso il suo «ridente sguardo cadaverico», come lo definisce Pasolini, la seduzione effimera del miracolo economico e, soprattutto, le sue disfunzioni, assumono le sembianze di una funerea profezia sociale, alimentata dal potere corrosi...

  20. [Juan Valverde de Amusco c. 1525-1588 and his vocation for anatomy in the Hispano-Italian Renaissance].

    Science.gov (United States)

    Hernández-Mansilla, José Miguel

    2015-01-01

    The XVIth century witnessed a glorious period in the progress of some of the basic medical sciences among which anatomy stands out. One of the well-known figures involved in the development of this subject was Juan Valverde de Amusco, a notable Spanish scientist. This research shows the most relevant data currently known on his life, sociocultural environment and his celebrated treaty on anatomy titled: "Historia de la composición del cuerpo humano". (History of the human body).

  1. Fé antropológica como ponte entre fé e ideología em Juan Luis Segundo

    Directory of Open Access Journals (Sweden)

    Alvori Ahlert

    2007-01-01

    Full Text Available Este texto busca a compreensão da ideología em sua relação com a fé na teologia latinoamericana a partir da concepção de fé antropológica na obra de Juan Luis Segundo. Acreditamos que a questão da ideología, e sua relação com a fé, continua sendo urna questão atual no pensamento cristão, face aos velhos e novos problemas humanos que o novo sáculo vem apresentando. Concentramos nossa análise nos escritos de Juan Luis Segundo, um dos principáis representantes dessa teologia, por ser este teólogo que, ao nosso ver, mais trabalhou, de forma explícita, a questão da ideología e sua relação com a fé no contexto latinoamericanoThis text searchs the understanding of the ideology in its relation with the faith in the Latin American theology from the conception of antropology faith in the workmanship of Juan Luis Segundo. We believe that the question of the ideology, and its relation with the faith, continue being a current question in the Christian thought, face to the old and new human problems that the new century comes presenting. We concentrate our analysis on the writings of Juan Luis Segundo, one of the main representatives of this theology, for being this theologian who, to ours to see, more worked, of explicit form, the question of the ideology and its relation with the faith in the Latin American context

  2. Historical review of uranium-vanadium in the eastern Carrizo Mountains, San Juan County, New Mexico and Apache County, Arizona

    International Nuclear Information System (INIS)

    Chenoweth, W.L.

    1980-03-01

    This report is a brief review of the uranium and/or vanadium mining in the eastern Carrizo Mountains, San Juan County, New Mexico and Apache County, Arizona. It was prepared at the request of the Navajo Tribe, the New Mexico Energy and Minerals Department, and the Arizona Bureau of Geology and Mineral Technology. This report deals only with historical production data. The locations of the mines and the production are presented in figures and tables

  3. Escribir para resistir la Soledad: Nostalgia, confesión y amor en cartas a Clara de Juan Rulfo

    Directory of Open Access Journals (Sweden)

    Carlos Julio Ayram Chede

    2013-01-01

    Full Text Available El presente artículo indaga en el conjunto de cartas que el escritor mexicano Juan Rulfo le escribe a Clara Aparicio entre los años 1944 y 1950 las cuales no solo representan un hecho poé- tico en sí mismo, sino que develan al menos tres estados que se conjugan y coexisten en el plano de la expresión de cada misiva: la nostalgia, la confesión y el amor. Por tanto, cada una de las cartas que escribe Rulfo le permite asegurar un lugar en el mundo que empieza a habitar desde la lejanía de su hogar y que comparte de manera permanente con Clara. Juan Rulfo se sustrae de la lógica de la cotidianidad para evaporar la rutinización de su vida en la escritura, podría afirmarse, que como San Juan de la Cruz o Gustavo Adolfo Bécquer, Rulfo se evade en la escritura como oportunidad para albergar un mundo incondicional donde existe él y su corazón, donde existe el sujeto que ama.

  4. Herpetofauna de la provincia de San Juan, Argentina: lista comentada y distribución geográfica

    Directory of Open Access Journals (Sweden)

    Ávila, Luciano Javier

    1998-01-01

    Full Text Available El conocimiento de la fauna de anfibios y reptiles de la Provincia de San Juan es fragmentario e incompleto. En razón de ello, el objetivo de este trabajo es presentar una lista de las especies de anfibios y reptiles registrados para San Juan. La información se relevó a partir de la revisión de colecciones de referencia y a partir de revisiones bibliográficas. Se establece un registro de 59 especies y se presentan las localidades de colección de las mismas. The knowledge of amphibians and reptiles of San Juan Province is characterized by being fragmentary and incomplete. For that reason, the main purpose of this work is to present a list of the amphibians and reptiles of the province. The sources of information are a revision of herpetological collections from national and regional museums and bibliographic research. We establish a list of 59 species and we present geographic localities of collections.

  5. Water cycle and salinity dynamics in the mangrove forests of Europa and Juan de Nova Islands, southwest Indian Ocean.

    Science.gov (United States)

    Lambs, Luc; Mangion, Perrine; Mougin, Eric; Fromard, François

    2016-01-30

    The functioning of mangrove forests found on small coralline islands is characterized by limited freshwater inputs. Here, we present data on the water cycling of such systems located on Europa and Juan de Nova Islands, Mozambique Channel. In order to better understand the water cycle and mangrove growth conditions, we have analysed the hydrological and salinity dynamics of the systems by gauge pressure and isotopic tracing (δ18O and δ2H values). Both islands have important seawater intrusion as measured by the water level change and the high salinities in the karstic ponds. Europa Island displays higher salinity stress, with its inner lagoon, but presents a pluri-specific mangrove species formation ranging from shrub to forest stands. No freshwater signal could be detected around the mangrove trees. On Juan de Nova Island, the presence of sand and detrital sediment allows the storage of some amount of rainfall to form a brackish groundwater. The mangrove surface area is very limited with only small mono-specific stands being present in karstic depression. On the drier Europa Island, the salinity of all the water points is equal to or higher than that of the seawater, and on Juan de Nova the groundwater salinity is lower (5 to 20 PSU). This preliminary study shows that the karstic pothole mangroves exist due to the sea connection through the fractured coral and the high tidal dynamics.

  6. Yours in Revolution: Retrofitting Carlos the Jackal

    Directory of Open Access Journals (Sweden)

    Samuel Thomas

    2013-09-01

    Full Text Available This paper explores the representation of ‘Carlos the Jackal’, the one-time ‘World’s Most Wanted Man’ and ‘International Face of Terror’ – primarily in cin-ema but also encompassing other forms of popular culture and aspects of Cold War policy-making. At the centre of the analysis is Olivier Assayas’s Carlos (2010, a transnational, five and a half hour film (first screened as a TV mini-series about the life and times of the infamous militant. Concentrating on the var-ious ways in which Assayas expresses a critical preoccupation with names and faces through complex formal composition, the project examines the play of ab-straction and embodiment that emerges from the narrativisation of terrorist vio-lence. Lastly, it seeks to engage with the hidden implications of Carlos in terms of the intertwined trajectories of formal experimentation and revolutionary politics.

  7. Monte Carlo strategies in scientific computing

    CERN Document Server

    Liu, Jun S

    2008-01-01

    This paperback edition is a reprint of the 2001 Springer edition This book provides a self-contained and up-to-date treatment of the Monte Carlo method and develops a common framework under which various Monte Carlo techniques can be "standardized" and compared Given the interdisciplinary nature of the topics and a moderate prerequisite for the reader, this book should be of interest to a broad audience of quantitative researchers such as computational biologists, computer scientists, econometricians, engineers, probabilists, and statisticians It can also be used as the textbook for a graduate-level course on Monte Carlo methods Many problems discussed in the alter chapters can be potential thesis topics for masters’ or PhD students in statistics or computer science departments Jun Liu is Professor of Statistics at Harvard University, with a courtesy Professor appointment at Harvard Biostatistics Department Professor Liu was the recipient of the 2002 COPSS Presidents' Award, the most prestigious one for sta...

  8. Random Numbers and Monte Carlo Methods

    Science.gov (United States)

    Scherer, Philipp O. J.

    Many-body problems often involve the calculation of integrals of very high dimension which cannot be treated by standard methods. For the calculation of thermodynamic averages Monte Carlo methods are very useful which sample the integration volume at randomly chosen points. After summarizing some basic statistics, we discuss algorithms for the generation of pseudo-random numbers with given probability distribution which are essential for all Monte Carlo methods. We show how the efficiency of Monte Carlo integration can be improved by sampling preferentially the important configurations. Finally the famous Metropolis algorithm is applied to classical many-particle systems. Computer experiments visualize the central limit theorem and apply the Metropolis method to the traveling salesman problem.

  9. Off-diagonal expansion quantum Monte Carlo.

    Science.gov (United States)

    Albash, Tameem; Wagenbreth, Gene; Hen, Itay

    2017-12-01

    We propose a Monte Carlo algorithm designed to simulate quantum as well as classical systems at equilibrium, bridging the algorithmic gap between quantum and classical thermal simulation algorithms. The method is based on a decomposition of the quantum partition function that can be viewed as a series expansion about its classical part. We argue that the algorithm not only provides a theoretical advancement in the field of quantum Monte Carlo simulations, but is optimally suited to tackle quantum many-body systems that exhibit a range of behaviors from "fully quantum" to "fully classical," in contrast to many existing methods. We demonstrate the advantages, sometimes by orders of magnitude, of the technique by comparing it against existing state-of-the-art schemes such as path integral quantum Monte Carlo and stochastic series expansion. We also illustrate how our method allows for the unification of quantum and classical thermal parallel tempering techniques into a single algorithm and discuss its practical significance.

  10. Reflections on early Monte Carlo calculations

    International Nuclear Information System (INIS)

    Spanier, J.

    1992-01-01

    Monte Carlo methods for solving various particle transport problems developed in parallel with the evolution of increasingly sophisticated computer programs implementing diffusion theory and low-order moments calculations. In these early years, Monte Carlo calculations and high-order approximations to the transport equation were seen as too expensive to use routinely for nuclear design but served as invaluable aids and supplements to design with less expensive tools. The earliest Monte Carlo programs were quite literal; i.e., neutron and other particle random walk histories were simulated by sampling from the probability laws inherent in the physical system without distoration. Use of such analogue sampling schemes resulted in a good deal of time being spent in examining the possibility of lowering the statistical uncertainties in the sample estimates by replacing simple, and intuitively obvious, random variables by those with identical means but lower variances

  11. Monte Carlo simulation of Markov unreliability models

    International Nuclear Information System (INIS)

    Lewis, E.E.; Boehm, F.

    1984-01-01

    A Monte Carlo method is formulated for the evaluation of the unrealibility of complex systems with known component failure and repair rates. The formulation is in terms of a Markov process allowing dependences between components to be modeled and computational efficiencies to be achieved in the Monte Carlo simulation. Two variance reduction techniques, forced transition and failure biasing, are employed to increase computational efficiency of the random walk procedure. For an example problem these result in improved computational efficiency by more than three orders of magnitudes over analog Monte Carlo. The method is generalized to treat problems with distributed failure and repair rate data, and a batching technique is introduced and shown to result in substantial increases in computational efficiency for an example problem. A method for separating the variance due to the data uncertainty from that due to the finite number of random walks is presented. (orig.)

  12. Shell model the Monte Carlo way

    International Nuclear Information System (INIS)

    Ormand, W.E.

    1995-01-01

    The formalism for the auxiliary-field Monte Carlo approach to the nuclear shell model is presented. The method is based on a linearization of the two-body part of the Hamiltonian in an imaginary-time propagator using the Hubbard-Stratonovich transformation. The foundation of the method, as applied to the nuclear many-body problem, is discussed. Topics presented in detail include: (1) the density-density formulation of the method, (2) computation of the overlaps, (3) the sign of the Monte Carlo weight function, (4) techniques for performing Monte Carlo sampling, and (5) the reconstruction of response functions from an imaginary-time auto-correlation function using MaxEnt techniques. Results obtained using schematic interactions, which have no sign problem, are presented to demonstrate the feasibility of the method, while an extrapolation method for realistic Hamiltonians is presented. In addition, applications at finite temperature are outlined

  13. Shell model the Monte Carlo way

    Energy Technology Data Exchange (ETDEWEB)

    Ormand, W.E.

    1995-03-01

    The formalism for the auxiliary-field Monte Carlo approach to the nuclear shell model is presented. The method is based on a linearization of the two-body part of the Hamiltonian in an imaginary-time propagator using the Hubbard-Stratonovich transformation. The foundation of the method, as applied to the nuclear many-body problem, is discussed. Topics presented in detail include: (1) the density-density formulation of the method, (2) computation of the overlaps, (3) the sign of the Monte Carlo weight function, (4) techniques for performing Monte Carlo sampling, and (5) the reconstruction of response functions from an imaginary-time auto-correlation function using MaxEnt techniques. Results obtained using schematic interactions, which have no sign problem, are presented to demonstrate the feasibility of the method, while an extrapolation method for realistic Hamiltonians is presented. In addition, applications at finite temperature are outlined.

  14. SPQR: a Monte Carlo reactor kinetics code

    International Nuclear Information System (INIS)

    Cramer, S.N.; Dodds, H.L.

    1980-02-01

    The SPQR Monte Carlo code has been developed to analyze fast reactor core accident problems where conventional methods are considered inadequate. The code is based on the adiabatic approximation of the quasi-static method. This initial version contains no automatic material motion or feedback. An existing Monte Carlo code is used to calculate the shape functions and the integral quantities needed in the kinetics module. Several sample problems have been devised and analyzed. Due to the large statistical uncertainty associated with the calculation of reactivity in accident simulations, the results, especially at later times, differ greatly from deterministic methods. It was also found that in large uncoupled systems, the Monte Carlo method has difficulty in handling asymmetric perturbations

  15. Current and future applications of Monte Carlo

    International Nuclear Information System (INIS)

    Zaidi, H.

    2003-01-01

    Full text: The use of radionuclides in medicine has a long history and encompasses a large area of applications including diagnosis and radiation treatment of cancer patients using either external or radionuclide radiotherapy. The 'Monte Carlo method'describes a very broad area of science, in which many processes, physical systems, and phenomena are simulated by statistical methods employing random numbers. The general idea of Monte Carlo analysis is to create a model, which is as similar as possible to the real physical system of interest, and to create interactions within that system based on known probabilities of occurrence, with random sampling of the probability density functions (pdfs). As the number of individual events (called 'histories') is increased, the quality of the reported average behavior of the system improves, meaning that the statistical uncertainty decreases. The use of the Monte Carlo method to simulate radiation transport has become the most accurate means of predicting absorbed dose distributions and other quantities of interest in the radiation treatment of cancer patients using either external or radionuclide radiotherapy. The same trend has occurred for the estimation of the absorbed dose in diagnostic procedures using radionuclides as well as the assessment of image quality and quantitative accuracy of radionuclide imaging. As a consequence of this generalized use, many questions are being raised primarily about the need and potential of Monte Carlo techniques, but also about how accurate it really is, what would it take to apply it clinically and make it available widely to the nuclear medicine community at large. Many of these questions will be answered when Monte Carlo techniques are implemented and used for more routine calculations and for in-depth investigations. In this paper, the conceptual role of the Monte Carlo method is briefly introduced and followed by a survey of its different applications in diagnostic and therapeutic

  16. Monte Carlo method for array criticality calculations

    International Nuclear Information System (INIS)

    Dickinson, D.; Whitesides, G.E.

    1976-01-01

    The Monte Carlo method for solving neutron transport problems consists of mathematically tracing paths of individual neutrons collision by collision until they are lost by absorption or leakage. The fate of the neutron after each collision is determined by the probability distribution functions that are formed from the neutron cross-section data. These distributions are sampled statistically to establish the successive steps in the neutron's path. The resulting data, accumulated from following a large number of batches, are analyzed to give estimates of k/sub eff/ and other collision-related quantities. The use of electronic computers to produce the simulated neutron histories, initiated at Los Alamos Scientific Laboratory, made the use of the Monte Carlo method practical for many applications. In analog Monte Carlo simulation, the calculation follows the physical events of neutron scattering, absorption, and leakage. To increase calculational efficiency, modifications such as the use of statistical weights are introduced. The Monte Carlo method permits the use of a three-dimensional geometry description and a detailed cross-section representation. Some of the problems in using the method are the selection of the spatial distribution for the initial batch, the preparation of the geometry description for complex units, and the calculation of error estimates for region-dependent quantities such as fluxes. The Monte Carlo method is especially appropriate for criticality safety calculations since it permits an accurate representation of interacting units of fissile material. Dissimilar units, units of complex shape, moderators between units, and reflected arrays may be calculated. Monte Carlo results must be correlated with relevant experimental data, and caution must be used to ensure that a representative set of neutron histories is produced

  17. Juan of Segovia’s Translation of the Qur’ān

    Directory of Open Access Journals (Sweden)

    Roth, Ulli

    2014-12-01

    Full Text Available John of Segovia (1393-1458 is together with Nicolaus Cusanus one of the most important theologians of the 15th century. His struggle for peace and consensus during the council of Basel culminated in his engagement for interreligious communication in the last years of his life. After the fall of Constantinople in 1453, he prepared a new approach towards the Islam. Not crusade, but interreligious communication based on thorough knowledge of the religion of the other should result in peace, either through converting the other or at least convincing him to stop warfare. Therefore John of Segovia initiated a new translation of the Qur’ān into Spanish, which he himself translated into Latin. This article outlines the history of this famous project and illustrates its main characteristics with examples taken from fragments of this first polyglot translation of the Qur’ān.Junto a Nicolás de Cusa, Juan de Segovia (1393-1458 fue uno de los teólogos más importantes del siglo XV. Sus esfuerzos por llegar a una paz y a un consenso durante el concilio de Basilea culminaron con un compromiso de comunicación interreligiosa en los últimos años de su vida. Después de la caída de Constantinopla en el año 1453, preparó un nuevo acercamiento hacia el Islam. Ya no se trataba de una cruzada, sino de realizar una comunicación entre religiones basada en un conocimiento profundo de la religión del otro, lo que creía que resultaría en una paz a través de la conversión del otro o, al menos, a través del convencimiento de que dejaría la guerra. Juan de Segovia comenzó así la tarea de traducir de nuevo el Corán al castellano, que él mismo había traducido al latín. Este artículo muestra la historia de este famoso proyecto ilustrando sus características más llamativas con ejemplos tomados de esta primera traducción políglota del Corán.

  18. Ambient Noise Tomography and Microseism Directionalities across the Juan de Fuca Plate

    Science.gov (United States)

    Tian, Ye

    Ambient noise tomography has been well developed over the past decade and proven to be effective in studying the crust and upper mantle structure beneath the Earth’s continents. With new seismic array deployments beginning in the oceans, the application of the tomographic methods based on ambient noise observed at ocean bottom seismometers (OBSs) has become an important topic for research. In this thesis, I investigate the application of ambient noise tomography to oceanic bottom seismic data recorded by the Cascadia Initiative experiment across the Juan de Fuca plate. With higher local noise levels recorded by OBSs, I find that traditional data processing procedures used in ambient noise tomography produce measurable Rayleigh wave Green’s functions between deep ocean stations, whereas the shallow water stations are severely contaminated by both tilt noise and compliance noise and require new methods of processing. Because the local noise level varies across the study region, four semi-independent studies are conducted to both utilize the quieter deep-water stations and to address the problem posed by noisy shallow water stations. First, I construct an age-dependent shear wave speed model of the crust and uppermost mantle with 18 deep-water stations near the Juan de Fuca Ridge. The model possess a shallow low shear velocity zone near the ridge and has its sedimentary thickness, lithospheric thickness, and mantle shear wave speeds increase systematically with age Second, I investigate the locations and mechanisms of microseism generation using ambient noise cross-correlations constructed between 61 OBSs and 42 continental stations near the western US coast and find that the primary and secondary microseisms are generated at different locations and possibly have different physical mechanisms. Third, I show that tilt and compliance noise on the vertical components of the OBSs can be reduced substantially using the horizontal components and the differential

  19. SINTESIS DE LA EVOLUCION HISTORICA DEL HOSPITAL SAN JUAN DE DIOS

    Directory of Open Access Journals (Sweden)

    Hernando Forero Caballero

    1985-12-01

    Full Text Available

    La evolución del hospital de San Juan de Dios, como entidad de carácter asistencial para la salud del pueblo colombiano, se puede dividir en 5 etapas, correspondientes al progreso médico, histórico y cultural del país. La primera etapa, fetal o "de crisálida" como la llamó el Profesor López de Mesa, se inició en 1564 con la organización de la colonia española en Santafé y consistió en el establecimiento de una casa con unas camas destinadas a atender a los españoles que padecían alguna enfermedad, por circunstancias climáticas o infectados de bacterias importadas por ellos mismos. La atención médica, si tal puede llamarse, la ofrecían los monjes que, por intuición o por poseer alguna cultura generala mística religiosa, eran las únicas personas con ciertas condiciones para proporcionar algún alivio a los enfermos.

    El hospital nació de la necesidad de proteger la salud de los conquistadores y sus familias y sobre todo del terror que les inspiraban las epidemias.

    La evolución del hospital de San Juan de Dios, como entidad de carácter asistencial para la salud del pueblo colombiano, se puede dividir en 5 etapas, correspondientes al progreso médico, histórico y cultural del país. La primera etapa, fetal o "de crisálida" como la llamó el Profesor López de Mesa, se inició en 1564 con la organización de la colonia española en Santafé y consistió en el establecimiento de una casa con unas camas destinadas a atender a los españoles que padecían alguna enfermedad, por circunstancias climáticas o infectados de bacterias importadas por ellos mismos. La atención médica, si tal puede llamarse, la ofrecían los monjes que, por intuición o por poseer alguna cultura genera la mística religiosa, eran las únicas personas con ciertas condiciones para proporcionar algún alivio a los enfermos. El hospital nació de la necesidad de proteger la salud de los conquistadores y sus familias y sobre todo del terror

  20. Carbonate microfacies of the San Juan Formation (Ordovician: Oepikodus evae and Oepikodus intermedius conodont zones), Niquivil, Central Precordillera, Province of San Juan (Argentina); Microfacies carbonáticas de la Formación San Juan (Ordovícico: zonas de conodontos Oepikodus evae y Oepikodus intermedius), Niquivil, Precordillera Central, Provincia de San Juan (Argentina)

    Energy Technology Data Exchange (ETDEWEB)

    Soria, T.; Beresi, M.; Mestre, A.; Heredia, S.; Rodríguez, M.C.

    2017-09-01

    This contribution presents the description and interpretation of carbonate microfacies of the San Juan Formation (Ordovician) at the Niquivil section, considering the stratigraphical interval between the Oepikodus evae and Oepikodus intermedius conodont zones. The distribution of the microfacies and the conodonts assemblages allow us to identify different sub-environments within the late Floian carbonate ramp of the Central Precordillera. Five microfacies were recognized from the base to the top: M1 Bioclastic mudstone-wackestone; M2 Bioclastic-peloidal wackestone; M3 Intra-bioclastic wackestone; M4 Intra-bioclastic packstone; M5 Peloidal grainstone. The vertical distribution of these microfacies indicates a shallowing trend of the carbonate ramp in the Niquivil section for this temporal interval, which suggests a middle ramp environment with low energy, without wave action, and that evolved towards the middle-inner ramp environment with more energy by wave action and development of tempestites. [Spanish] En la presente contribución se realiza la descripción e interpretación de las microfacies carbonáticas de la Formación San Juan (Ordovícico) en la sección de Niquivil, considerando el intervalo estratigráfico comprendido entre las zonas de conodontos Oepikodus evae y Oepikodus intermedius. El análisis de las microfacies y los conodontos asociados permiten el reconocimiento de diferentes subambientes carbonáticos dentro de la rampa carbonática desarrollada durante el Floiense tardío de la Precordillera Central. Se reconocieron cinco microfacies que, de base a techo, son: M1 Mudstone-Wackestone bioclástico; M2 Wackestone bioclástico-peloidal; M3 Wackestone intra-bioclástico; M4 Packstone intra-bioclástico; M5 Grainstone peloidal. La interpretación vertical de estas microfacies indica una tendencia hacia la somerización de la rampa carbonática en la sección de Niquivil para el lapso temporal estudiado. El que se correspondería con un ambiente de

  1. Hacia el pensamiento de Juan Ruiz de Alarcón

    Directory of Open Access Journals (Sweden)

    Josa, Lola

    2002-12-01

    Full Text Available The comedy of characters was born in the hands of Ruiz de Alarcón as he achieved that from his first comedies, those of enredo, the main characters learnt to govern their own actions without any classification. That is the reason why the critics, without any further analysis, have described his theatre as 'moral'. Nevertheless, we are talking about a dramatist who stages mirages, unmasks tyrants disguised as level-headed monarchs, and frustrates the development of those court favourites who were egoists and ill by their passions. At the same time, the omission of providence becomes another kind of protest. All the court on the stage to ridicule with irony and punish their bad habits and delusions. When he finally discovered the politics of the conde-duque de Olivares, he decided to give up theatre. Therefore, we discover another Juan Ruiz de Alarcón never suspected: the dramatist who believed in the program of reformation that the conde-duque de Olivares, court favourite of King Philip IV, wanted to impose to a «patria doliente», name given by the dramatist to the Spain of the first half of the 17th century.La comedia de caracteres nace en manos de Ruiz de Alarcón porque consigue que, a partir de sus primeras comedias, las de enredo, los protagonistas aprendan a regir sus propias acciones al margen de tipificación alguna. Motivo por el que la crítica, sin entrar en más análisis, haya calificado su teatro como 'moral'. Sin embargo, nos encontramos ante un dramaturgo que escenifica espejismos; desenmascara a tiranos disfrazados de monarcas ecuánimes; frustra la trayectoria de privados egoístas y sedientos de poder o enfermos por sus pasiones; mientras que, al mismo tiempo, la omisión de la providencia se convierte, también, en otra clase de protesta. Toda la corte sobre las tablas para, con ironía, ridiculizar y castigar sus vicios y delirios. Cuando por fin descubrió los de la política del conde-duque de Olivares, decidi

  2. Monte Carlo simulation applied to alpha spectrometry

    International Nuclear Information System (INIS)

    Baccouche, S.; Gharbi, F.; Trabelsi, A.

    2007-01-01

    Alpha particle spectrometry is a widely-used analytical method, in particular when we deal with pure alpha emitting radionuclides. Monte Carlo simulation is an adequate tool to investigate the influence of various phenomena on this analytical method. We performed an investigation of those phenomena using the simulation code GEANT of CERN. The results concerning the geometrical detection efficiency in different measurement geometries agree with analytical calculations. This work confirms that Monte Carlo simulation of solid angle of detection is a very useful tool to determine with very good accuracy the detection efficiency.

  3. Simplified monte carlo simulation for Beijing spectrometer

    International Nuclear Information System (INIS)

    Wang Taijie; Wang Shuqin; Yan Wuguang; Huang Yinzhi; Huang Deqiang; Lang Pengfei

    1986-01-01

    The Monte Carlo method based on the functionization of the performance of detectors and the transformation of values of kinematical variables into ''measured'' ones by means of smearing has been used to program the Monte Carlo simulation of the performance of the Beijing Spectrometer (BES) in FORTRAN language named BESMC. It can be used to investigate the multiplicity, the particle type, and the distribution of four-momentum of the final states of electron-positron collision, and also the response of the BES to these final states. Thus, it provides a measure to examine whether the overall design of the BES is reasonable and to decide the physical topics of the BES

  4. Self-learning Monte Carlo (dynamical biasing)

    International Nuclear Information System (INIS)

    Matthes, W.

    1981-01-01

    In many applications the histories of a normal Monte Carlo game rarely reach the target region. An approximate knowledge of the importance (with respect to the target) may be used to guide the particles more frequently into the target region. A Monte Carlo method is presented in which each history contributes to update the importance field such that eventually most target histories are sampled. It is a self-learning method in the sense that the procedure itself: (a) learns which histories are important (reach the target) and increases their probability; (b) reduces the probabilities of unimportant histories; (c) concentrates gradually on the more important target histories. (U.K.)

  5. Burnup calculations using Monte Carlo method

    International Nuclear Information System (INIS)

    Ghosh, Biplab; Degweker, S.B.

    2009-01-01

    In the recent years, interest in burnup calculations using Monte Carlo methods has gained momentum. Previous burn up codes have used multigroup transport theory based calculations followed by diffusion theory based core calculations for the neutronic portion of codes. The transport theory methods invariably make approximations with regard to treatment of the energy and angle variables involved in scattering, besides approximations related to geometry simplification. Cell homogenisation to produce diffusion, theory parameters adds to these approximations. Moreover, while diffusion theory works for most reactors, it does not produce accurate results in systems that have strong gradients, strong absorbers or large voids. Also, diffusion theory codes are geometry limited (rectangular, hexagonal, cylindrical, and spherical coordinates). Monte Carlo methods are ideal to solve very heterogeneous reactors and/or lattices/assemblies in which considerable burnable poisons are used. The key feature of this approach is that Monte Carlo methods permit essentially 'exact' modeling of all geometrical detail, without resort to ene and spatial homogenization of neutron cross sections. Monte Carlo method would also be better for in Accelerator Driven Systems (ADS) which could have strong gradients due to the external source and a sub-critical assembly. To meet the demand for an accurate burnup code, we have developed a Monte Carlo burnup calculation code system in which Monte Carlo neutron transport code is coupled with a versatile code (McBurn) for calculating the buildup and decay of nuclides in nuclear materials. McBurn is developed from scratch by the authors. In this article we will discuss our effort in developing the continuous energy Monte Carlo burn-up code, McBurn. McBurn is intended for entire reactor core as well as for unit cells and assemblies. Generally, McBurn can do burnup of any geometrical system which can be handled by the underlying Monte Carlo transport code

  6. Improvements for Monte Carlo burnup calculation

    Energy Technology Data Exchange (ETDEWEB)

    Shenglong, Q.; Dong, Y.; Danrong, S.; Wei, L., E-mail: qiangshenglong@tsinghua.org.cn, E-mail: d.yao@npic.ac.cn, E-mail: songdr@npic.ac.cn, E-mail: luwei@npic.ac.cn [Nuclear Power Inst. of China, Cheng Du, Si Chuan (China)

    2015-07-01

    Monte Carlo burnup calculation is development trend of reactor physics, there would be a lot of work to be done for engineering applications. Based on Monte Carlo burnup code MOI, non-fuel burnup calculation methods and critical search suggestions will be mentioned in this paper. For non-fuel burnup, mixed burnup mode will improve the accuracy of burnup calculation and efficiency. For critical search of control rod position, a new method called ABN based on ABA which used by MC21 will be proposed for the first time in this paper. (author)

  7. A keff calculation method by Monte Carlo

    International Nuclear Information System (INIS)

    Shen, H; Wang, K.

    2008-01-01

    The effective multiplication factor (k eff ) is defined as the ratio between the number of neutrons in successive generations, which definition is adopted by most Monte Carlo codes (e.g. MCNP). Also, it can be thought of as the ratio of the generation rate of neutrons by the sum of the leakage rate and the absorption rate, which should exclude the effect of the neutron reaction such as (n, 2n) and (n, 3n). This article discusses the Monte Carlo method for k eff calculation based on the second definition. A new code has been developed and the results are presented. (author)

  8. Monte Carlo electron/photon transport

    International Nuclear Information System (INIS)

    Mack, J.M.; Morel, J.E.; Hughes, H.G.

    1985-01-01

    A review of nonplasma coupled electron/photon transport using Monte Carlo method is presented. Remarks are mainly restricted to linerarized formalisms at electron energies from 1 keV to 1000 MeV. Applications involving pulse-height estimation, transport in external magnetic fields, and optical Cerenkov production are discussed to underscore the importance of this branch of computational physics. Advances in electron multigroup cross-section generation is reported, and its impact on future code development assessed. Progress toward the transformation of MCNP into a generalized neutral/charged-particle Monte Carlo code is described. 48 refs

  9. Monte Carlo simulation of neutron scattering instruments

    International Nuclear Information System (INIS)

    Seeger, P.A.

    1995-01-01

    A library of Monte Carlo subroutines has been developed for the purpose of design of neutron scattering instruments. Using small-angle scattering as an example, the philosophy and structure of the library are described and the programs are used to compare instruments at continuous wave (CW) and long-pulse spallation source (LPSS) neutron facilities. The Monte Carlo results give a count-rate gain of a factor between 2 and 4 using time-of-flight analysis. This is comparable to scaling arguments based on the ratio of wavelength bandwidth to resolution width

  10. Monte Carlo applications to radiation shielding problems

    International Nuclear Information System (INIS)

    Subbaiah, K.V.

    2009-01-01

    Monte Carlo methods are a class of computational algorithms that rely on repeated random sampling of physical and mathematical systems to compute their results. However, basic concepts of MC are both simple and straightforward and can be learned by using a personal computer. Uses of Monte Carlo methods require large amounts of random numbers, and it was their use that spurred the development of pseudorandom number generators, which were far quicker to use than the tables of random numbers which had been previously used for statistical sampling. In Monte Carlo simulation of radiation transport, the history (track) of a particle is viewed as a random sequence of free flights that end with an interaction event where the particle changes its direction of movement, loses energy and, occasionally, produces secondary particles. The Monte Carlo simulation of a given experimental arrangement (e.g., an electron beam, coming from an accelerator and impinging on a water phantom) consists of the numerical generation of random histories. To simulate these histories we need an interaction model, i.e., a set of differential cross sections (DCS) for the relevant interaction mechanisms. The DCSs determine the probability distribution functions (pdf) of the random variables that characterize a track; 1) free path between successive interaction events, 2) type of interaction taking place and 3) energy loss and angular deflection in a particular event (and initial state of emitted secondary particles, if any). Once these pdfs are known, random histories can be generated by using appropriate sampling methods. If the number of generated histories is large enough, quantitative information on the transport process may be obtained by simply averaging over the simulated histories. The Monte Carlo method yields the same information as the solution of the Boltzmann transport equation, with the same interaction model, but is easier to implement. In particular, the simulation of radiation

  11. Simulation of transport equations with Monte Carlo

    International Nuclear Information System (INIS)

    Matthes, W.

    1975-09-01

    The main purpose of the report is to explain the relation between the transport equation and the Monte Carlo game used for its solution. The introduction of artificial particles carrying a weight provides one with high flexibility in constructing many different games for the solution of the same equation. This flexibility opens a way to construct a Monte Carlo game for the solution of the adjoint transport equation. Emphasis is laid mostly on giving a clear understanding of what to do and not on the details of how to do a specific game

  12. Monte Carlo dose distributions for radiosurgery

    International Nuclear Information System (INIS)

    Perucha, M.; Leal, A.; Rincon, M.; Carrasco, E.

    2001-01-01

    The precision of Radiosurgery Treatment planning systems is limited by the approximations of their algorithms and by their dosimetrical input data. This fact is especially important in small fields. However, the Monte Carlo methods is an accurate alternative as it considers every aspect of particle transport. In this work an acoustic neurinoma is studied by comparing the dose distribution of both a planning system and Monte Carlo. Relative shifts have been measured and furthermore, Dose-Volume Histograms have been calculated for target and adjacent organs at risk. (orig.)

  13. Geochemistry of axial seamount lavas: Magmatic relationship between the Cobb Hotspot and the Juan de Fuca Ridge

    Science.gov (United States)

    Rhodes, J. M.; Morgan, C.; Liias, R. A.

    1990-08-01

    Axial Seamount, located along the central portion of the Juan de Fuca Ridge axis and at the eastern end of the Cobb-Eickelberg Seamount Chain, is the current center of the Cobb Hotspot. The Axial Seamount lavas are transitional between N-type and E-type mid-ocean ridge basalt (MORB), characteristics that they share with lavas along the rest of the Juan de Fuca Ridge. There are, however, subtle, but distinct, differences between the seamount lavas and those of the adjoining ridge segments. These include higher Na2O, CaO, and Sr at a given MgO content and lower silica saturation in the seamount lavas as compared with the ridge lavas. Lava chemistry and bathymetry indicate that Axial Seamount is a discrete volcanic unit, with a more productive shallow magmatic plumbing system separate from the adjacent ridge segments. These high magma supply rates have sustained a continuously replenished, steady state magma reservoir that has erupted remarkably homogeneous lavas over a long time period. Despite this classic association of spreading center and hotspot volcanic activity, there is no evidence in the lavas for geochemical or isotopic enrichment typical of hotspot or mantle plume activity. The differences in composition between the Axial Seamount lavas and the Juan de Fuca Ridge lavas are attributed to melting processes rather than to any fundamental differences in their mantle source compositions. The higher magma production rates, higher Sr, and lower silica saturation in the seamount lavas relative to the ridge lavas are thought to be a consequence of melt initiation at greater depths. The melting column producing the seamount lavas is thought to be initiated in the stability field of spinel peridotite, whereas the ridge lavas are produced from a melting column initiated at shallower levels, possibly within or close to the stability field of plagioclase peridotite. Implicit in this interpretation is the conclusion that the Juan de Fuca Ridge lavas, and by analogy most

  14. Fast sequential Monte Carlo methods for counting and optimization

    CERN Document Server

    Rubinstein, Reuven Y; Vaisman, Radislav

    2013-01-01

    A comprehensive account of the theory and application of Monte Carlo methods Based on years of research in efficient Monte Carlo methods for estimation of rare-event probabilities, counting problems, and combinatorial optimization, Fast Sequential Monte Carlo Methods for Counting and Optimization is a complete illustration of fast sequential Monte Carlo techniques. The book provides an accessible overview of current work in the field of Monte Carlo methods, specifically sequential Monte Carlo techniques, for solving abstract counting and optimization problems. Written by authorities in the

  15. Specialized Monte Carlo codes versus general-purpose Monte Carlo codes

    International Nuclear Information System (INIS)

    Moskvin, Vadim; DesRosiers, Colleen; Papiez, Lech; Lu, Xiaoyi

    2002-01-01

    The possibilities of Monte Carlo modeling for dose calculations and optimization treatment are quite limited in radiation oncology applications. The main reason is that the Monte Carlo technique for dose calculations is time consuming while treatment planning may require hundreds of possible cases of dose simulations to be evaluated for dose optimization. The second reason is that general-purpose codes widely used in practice, require an experienced user to customize them for calculations. This paper discusses the concept of Monte Carlo code design that can avoid the main problems that are preventing wide spread use of this simulation technique in medical physics. (authors)

  16. On the use of stochastic approximation Monte Carlo for Monte Carlo integration

    KAUST Repository

    Liang, Faming

    2009-03-01

    The stochastic approximation Monte Carlo (SAMC) algorithm has recently been proposed as a dynamic optimization algorithm in the literature. In this paper, we show in theory that the samples generated by SAMC can be used for Monte Carlo integration via a dynamically weighted estimator by calling some results from the literature of nonhomogeneous Markov chains. Our numerical results indicate that SAMC can yield significant savings over conventional Monte Carlo algorithms, such as the Metropolis-Hastings algorithm, for the problems for which the energy landscape is rugged. © 2008 Elsevier B.V. All rights reserved.

  17. LA HUELLA DE LO SAGRADO EN LA POESÍA DE JUAN EDUARDO CIRLOT

    Directory of Open Access Journals (Sweden)

    Guillermo Aguirre

    2014-10-01

    Full Text Available Poeta singular e iconoclasta, Juan Eduardo Cirlot (1916-1973 erigió con su poemario Bronwyn uno de los universos imaginarios más vastos, sugerentes y atractivos realizados en castellano a lo largo del siglo dejado atrás. Interesado por el serialismo musical, la cábala, el simbolismo y la práctica totalidad de corrientes artísticas de la antigüedad y modernas, Cirlot tomaría motivos de todos estos ámbitos para hacerlos confluir con sus propias búsquedas espirituales en su última etapa creativa. Tomando como modelo un método crítico de análisis simbólico y estudio de la naturaleza y significado de los elementos (Bachelard, Poulet, Cassirer, etc., trataremos de comprender aquellos aspectos de su obra que nos ofrezcan una pista tanto del sentido último de su creación, como de su punto de partida y el desarrollo de la misma.

  18. The Effect of Saturation on the Slope Sliding in the San Juan de Grijalva Comunity, Chiapas

    Directory of Open Access Journals (Sweden)

    Mora-Ortiz R.S.

    2012-01-01

    Full Text Available A number of slopes that have been stable during many years may fail when an extraordinary rain period occurs. This phenomenon involves not only the lithology, the geometric and the mechanical characteristics of the slope but also the rain-evaporation-infiltration regime of the site. In this paper, the stability of a slope in the comunity of San Juan de Grijalva, Ostuacán, Chiapas (Mexico that failed during an intense raining period is analyzed. The volume of this slide was over 5 millions of cubics meters of soil and it produced the obstruction of the Grijalva river. The stratigraphic and geometric properties of the slope were determined and undisturbed samples were obtained in the site to determine the mechanical properties of the material. The stability analysis considered the variation of the cohesion of the soil caused by wetting and it was possible to observe the evolution of the safety factor with the water content of the material. Through the analysis of the rain infiltration and the stability of the slope, it has been possible to reproduce the failure process.

  19. The Teatro Guindalera Project. An Interview with Juan Pastor MilletFernandez

    Directory of Open Access Journals (Sweden)

    Mª-Yolanda Fernández-Suárez

    2011-03-01

    Full Text Available Juan Pastor Millet was born in Alicante in 1943. He has a degree in Drama and did his training with William Layton and Arnold Taraborrelli in Laboratorio T.E.I. Till 1980 he worked as a theatre, cinema and TV actor. As an independent director he has produced plays by both Spanish and foreign contemporary authors, and also by classic ones like Calderón de la Barca, Shakespeare, Cervantes, Molière, Ibsen, Strindberg and Brecht. From 1987 till 2006 he combined his job as a director with his job as a Drama teacher at RESAD (Real Escuela Superior de Arte Dramático. In November 2003 he opened his own Studio and Theatre House in Madrid – Guindalera. From then on he devotes all his time to the family project Guindalera Escena Abierta  together with his wife Teresa Valentín-Gamazo and their daughter, the actress María Pastor. In 2009 while they were celebrating Brian Friel’s 80th anniversary staging three of his plays – El Juego de Yalta, Molly Sweeney and Bailando en Lughnasa – they were awarded the prestigious “Premio Ojo Crítico de Teatro” for their commitment to new authors and their pedagogical character.

  20. Uranium hydrogeochemical and stream sediment reconnaissance in the San Juan Mountains, Southwest Colorado

    International Nuclear Information System (INIS)

    Maxwell, J.C.

    1977-02-01

    From 1995 sites in the San Juan Mountains area, 1706 water and 1982 sediment samples were collected during June--July 1976 and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in the reconnaissance. Average value of uranium in water samples from mountains was less than 0.5 ppB, from plateaus was 1 to 2 ppB, from Mancos shale areas exceeded 2 ppB. Anomalous sediment samples, 40 ppM uranium, came from near Storm King Mountain and upper Vallecito Creek. Other anomalous areas, including the Lake City mining district, were well defined by 4 to 30 ppM uranium in sediment and 3 to 30 ppB uranium in water. Anomalous areas not previously reported indicate favorable areas for future exploration

  1. Confesiones de un étnico recalcitrante :Respuesta a Juan Aranzadi

    Directory of Open Access Journals (Sweden)

    Joseba Zulaika

    2002-01-01

    Full Text Available El autor responde a las acusaciones de etnicismo y relativismo posmoderno vertidas contra él por Juan Aranzadi en su libro El escudo de Arquíloco. El caso paradigmático es el debate en torno a los mapas genéticos que Cavalli- Sforza aplica a los vascos: el autor reproduce sus opiniones irónicas y de completo escepticismo sobre tales mapas genéticos expresadas en un texto de dos páginas, y las contrasta con la obvia tergiversación fraudulenta de Aranzadi que utiliza ese texto como base de su argumentación del “etnismo recalcitrante” del autor durante varios cientos de páginas. El artículo examina las inversiones paródicas del texto hiperbólico de Aranzadi que, de forma confesional y dando giros de 180 grados a experiencias pasadas, contrapone cristianismo y anticristianismo, vasquismo y antivasquismo, democracia y antidemocracia, para reproducir el mismo esquema antagónico de purismos solipsistas y autoexcluyentes. La ironía final es que el mordaz crítico del Milenarismo y de la Edad de Oro vascas termina invocando la huida de la modernidad y el retorno a la sociedad de los cazadoresrecolectores.

  2. Uranium deposits at the Jomac mine, White Canyon area, San Juan County, Utah

    Science.gov (United States)

    Trites, A.F.; Hadd, G.A.

    1955-01-01

    The Jomac mine is in the White Canyon area. San Juan County, Utah, about 13 miles northeast of the town of White Canyon, Utah. The mine is owned by the Ellihill Mining Company, White Canyon, Utah. Mine workings consist pf two adits connected by a crosscut. Two hundred feet of exploratory drifting and 2,983.5 feet of exploratory core drilling were completed during 1953 by the owners with Defense Minerals Exploration Administration assistance. Sedimentary rocks exposed in the area of the Jomac mine are of Permian to Late Triassic age, having a combined thickness of more than 1,700 feet. An ancient channel, from 200 to 400 feet wide and about 4 feet deep, enters the mine area from the southwest, swinging abruptly northwest near the mine workings and continuing to the northern tip of the Jomac Hillo This channel was cut into the upper beds of the Moenkopi formation and filled in part by Chinle and in part by Shinarump sediments. This channel is marked by depressions that apparently were scoured into its floor; a tributary channel may have joined it from the southeast at a point near the mine workings. Chinle beds Intertongue with Shinarump beds along the southwestern part of the channel. After the main channel was partly filled by siltstone of the Chinle formation, the stream was apparently diverted into the tributary channel, and scours were cut into

  3. Uranium hydrogeochemical and stream sediment reconnaissance in the San Juan Mountains, Southwest Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Maxwell, J.C.

    1977-02-01

    From 1995 sites in the San Juan Mountains area, 1706 water and 1982 sediment samples were collected during June--July 1976 and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in the reconnaissance. Average value of uranium in water samples from mountains was less than 0.5 ppB, from plateaus was 1 to 2 ppB, from Mancos shale areas exceeded 2 ppB. Anomalous sediment samples, 40 ppM uranium, came from near Storm King Mountain and upper Vallecito Creek. Other anomalous areas, including the Lake City mining district, were well defined by 4 to 30 ppM uranium in sediment and 3 to 30 ppB uranium in water. Anomalous areas not previously reported indicate favorable areas for future exploration.

  4. Nostalgia of the Encomienda. Rereading Juan Suárez de Peralta's Tratado del descubrimiento (1589

    Directory of Open Access Journals (Sweden)

    Enrique González González

    2009-10-01

    Full Text Available The work Tratado del descubrimiento de las Yndias y su conquista, written  by the New Spain Creole Juan Suárez de Peralta around 1589, has traditionally been read as just another Conquest chronicle, scarcely interesting in its first chapters, but fully vivid in its “second” part, where the author  tells of the so-called conspiracy of Martín Cortés,  Second Marquis of the Valley of Oaxaca. This paper, however, suggests that the Tratado, in keeping with its title, must be read as a treatise in which Suárez de Peralta pleads for the legitimacy of the encomienda and offers an account of the fateful —as he sees them— consequences  brought about by the Crown's rulings to suppress it. Therefore, the Tratado must be considered within the great debates of the time on how conquered peoples, conquerors and their descendants  should be treated. Although not a professional lawyer, Suárez de Peralta turns out to be a resourceful and convincing writer. Far from offering a linear account  of a series of events, he takes advantage of ambiguity in order  to argue, from different  viewpoints,  on several issues. Sensing that he defends a lost cause, his allegation oozes irony, disillusion, and nostalgia.

  5. Juan Ramón Jiménez and Nietzsche

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    John P. Devlin

    1983-01-01

    Full Text Available The young Juan Ramón Jiménez shared the enthusiasm for the writings of Nietzsche prevalent among his contemporaries. More significant are the interest in and affinity with Nietzsche which persisted into the poet's maturity. Jiménez found in Nietzsche not only a man of ideas but a poet who claimed to be a potent spiritual force. Both writers held that the modern age could recover a sense of spiritual integrity through the will of the individual to live and interpret human existence as an aesthetic phenomenon. Nietzsche's views on the nature of art and the role of the artist helped to sustain Jiménez' exalted and elitist view of poetry and the poet's mission. Jiménez felt an ethical kinship with the philosopher who asserted the absolute uniqueness of the creative individual, the end of whose existence was self-realization through his art. Nietzsche's doctrine of heroic vitalism as an antidote to chronic spiritual malaise corresponds to Jiménez' revitalized vision of the poetic word proclaimed in the Diario and elaborated in subsequent verse and prose writings.

  6. Efficacy of 230Th normalization in sediments from the Juan de Fuca Ridge, northeast Pacific Ocean

    Science.gov (United States)

    Costa, Kassandra; McManus, Jerry

    2017-01-01

    230Th normalization is an indispensable method for reconstructing sedimentation rates and mass fluxes over time, but the validity of this approach has generated considerable debate in the paleoceanographic community. 230Th systematics have been challenged with regards to grain size bias, sediment composition (CaCO3), water column advection, and other processes. In this study, we investigate the consequences of these effects on 230Th normalization from a suite of six cores on the Juan de Fuca Ridge. The proximity of these cores (carbonate preservation, both of which may limit the usage of 230Th in this region. Despite anticipated complications, 230Th normalization effectively reconstructs nearly identical particle rain rates from all six cores, which are summarily unrelated to the total sedimentation rates as calculated from the age models. Instead the total sedimentation rates are controlled almost entirely by sediment focusing and winnowing, which are highly variable even over the short spatial scales investigated in this study. Furthermore, no feedbacks on 230Th systematics were detected as a consequence of sediment focusing, coarse fraction variability, or calcium carbonate content, supporting the robustness of the 230Th normalization technique.

  7. Juan Pablo II: Portador de Esperanza ante el Dolor y el Sufrimiento

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    Carlos Alberto Rosas Jiménez

    2015-01-01

    Full Text Available El Santo Papa Juan Pablo II centrado en la pregunta por el hombre y la defensa de su dignidad, se preocupó por dejar una sólida y significativa enseñanza sobre esta realidad del ser humano. Padeció el dolor y el sufrimiento en muchos momentos de su vida y, como filósofo, teólogo y Pastor, manifestó esta gran preocupación en casi todas sus encíclicas, en las que buscó transmitir, a lo largo de todo su pontificado, la fe de la Iglesia Católica recogiendo las enseñanzas de la Sagrada Escritura y la Sagrada Tradición. A través de una revisión de las encíclicas que escribió, ilustramos cómo el Santo Padre evidencia, ante todo, un profundo interés de que el hombre de hoy se entienda principalmente a sí mismo y de esta manera, comprenda el dinamismo del dolor, para que, antes que desesperar en los momentos difíciles, viva la esperanza y pueda así llenar de sentido su vida entera

  8. Eating in a Home for Children. Food Resistance in the Residence Juan de Lanuza

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    Luis Cantarero

    2001-04-01

    Full Text Available The basic needs of the children of the Residence Juan de Lanuza (Zaragoza, Spain are covered by the daily amount of food they are provided with at meals. However, the tasks of the professionals who work in this Home are not restricted to feeding. One of the educational goals is to teach children socially adapted food habits, which are considered essential for the young persons’ “culturisation”. Food socialization has its roots in the ideology of the educating staff. The disciplinary system is based on the containment of deviations from normative food habits. The harshest punishment is inflicted when the child refuses to eat. The aim of this paper is to show that the resistance to food offered by the children of this Home between 6 and 12 years of age, is not due to lack of appetite but is the expression of a specific demand. Through their behaviour the children make explicit their wish to belong to a certain age group, they assert their ethnic difference, they show whether they wish to relate or not to other children or the staff, they ask for the educator’s attention to their state of mind, etc.

  9. Deglaciation and postglacial treeline fluctuation in the northern San Juan Mountains, Colorado

    Science.gov (United States)

    Carrara, Paul E.

    2011-01-01

    The San Juan Mountains of southwestern Colorado contain numerous lakes and bogs at and above treeline. In June 1978, Lake Emma, a tarn above present-day treeline, was suddenly drained by the collapse of underground mine workings. This study was initiated because the draining exposed a well-preserved archive of subfossil coniferous wood fragments that provided a unique opportunity to further our understanding of the paleoclimatic history of this region. These paleoclimatic studies-coniferous macrofossil identification in conjunction with radiocarbon dating, deuterium analysis of the dated conifer fragments, as well as pollen and fossil insect analyses-yielded new information regarding Holocene climate and accompanying treeline changes in the northern San Juan Mountains. This report synthesizes previously published reports by the author and other investigators, and unpublished information of the author bearing on late Pleistocene and Holocene treeline and climate in this region. Retreat of the glacier that occupied the upper Animas River valley from its Pinedale terminal position began about 19.4 + or - 1.5 10Be thousands of years ago and was essentially complete by about 12.3 + or - 1.0 10Be thousands of years ago. Two sets of late Pleistocene cirque moraines were identified in the northern San Juan Mountains. The older set is widespread and probably correlates with the Younger Dryas (11,000-10,000 radiocarbon years before present; 12,800-11,500 calendar years). The younger set is found only in the Grenadier Range and represents remnant glacier ice lying in well-shaded niches in a mountain range undergoing rapid deglaciation. A snowbank at the northern base of this range appears to be fronted by a Little Ice Age moraine. Soon after deglaciation the average July temperature is estimated to have been about 5°C cooler and timberline about 650 meters lower than at present. However, timberline (and treeline) responded rapidly to the postglacial warming and reached

  10. Juan Valverde de Hamusco's unauthorized reproduction of a brain dissection by Andreas Vesalius.

    Science.gov (United States)

    Lanska, Douglas J; Lanska, John R

    2013-02-26

    The objective of the present work is to examine images of the brain dissection by Flemish-born anatomist Andreas Vesalius (1514-1564) as originally represented in the Fabrica (1543), and later copied without Vesalius' permission by Spanish anatomist Juan Valverde de Hamusco (c1525-c1587) in Historia de la composicion del cuerpo humano (1556). Illustrations of the brain dissection in the Fabrica were obtained in digital form, resized, and arranged in a comparable montage to that presented by Valverde. Computer manipulations were used to assess image correspondence. The Valverde illustrations are approximately half the size and are mirror images of those in the Fabrica, but otherwise show the same dissection stages, and identical transverse brain levels and structures. The Valverde illustrations lack shadowing and show minor variations in perspective and fine details (e.g., branching pattern of the middle meningeal artery) from those in the Fabrica. Craftsmen under the direction of Valverde copied the woodcut prints in the Fabrica in close but approximate form by freehand engraving onto copper plates. Differences in the sizes of the images, and in perspective and fine detail, preclude direct tracing of images as the means of copying. Because engravings are in effect "flipped over" to make further prints, subsequent prints made from Valverde's copperplate engravings are mirror images of the prints in Vesalius' Fabrica.

  11. Results of uranium hydrogeochemical and stream sediment reconnaissance of the San Juan area, southwestern Colorado

    International Nuclear Information System (INIS)

    Maxwell, J.C.

    1977-01-01

    During June-July 1976, 1706 water samples and 1982 sediment samples were collected from 1995 sites in the San Juan Mountains area and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in the reconnaissance. Average value of uranium in water samples from mountains was less than 0.5 ppb, from plateaus was 1 to 2 ppb, and from Mancos shale areas exceeded 2 ppb. Anomalous sediment samples, 40 ppM uranium, came from near Storm King Mountain and upper Vallecito Creek. Other anomalous areas, including the Lake City mining district, were well defined by 4 to 30 ppM uranium in sediment and 3 to 30 ppB uranium in water. Above-average concentrations of uranium not previously reported indicate areas favorable for detailed exploration

  12. Results of uranium HSSR survey of the San Juan area southwestern Colorado

    International Nuclear Information System (INIS)

    Maxwell, J.C.

    1977-01-01

    During June--July 1976, 1706 water samples and 1982 sediment samples were collected from 1995 sites in the San Juan Mountains area and analyzed for uranium. The area includes the southern third of the Colorado mineral belt which has yielded rich ores of gold, silver, copper, lead, zinc, and molybdenum. The broadly domed mountains are capped by 2500 m of Tertiary volcanics, deeply eroded to expose a Precambrian crystalline core. Adjacent plateaus underlain by Mesozoic sedimentary rocks were included in the reconnaissance. Average value of uranium in water samples from mountains was less than 0.5 ppB, from plateaus was 1 to 2 ppB, and from Mancos shale areas exceeded 2 ppB. Anomalous sediment samples, 40 ppM uranium, came from near Storm King Mountain and upper Vallecito Creek. Other anomalous areas, including the Lake City mining district, were well defined by 4 to 30 ppM uranium in sediment and 3 to 30 ppB uranium in water. Above-average concentrations of uranium not previously reported indicate areas favorable for detailed exploration

  13. Restoring sedges and mosses into frost heaving iron fens, San Juan Mountains, Colorado

    Directory of Open Access Journals (Sweden)

    R.A. Chimner

    2011-08-01

    Full Text Available Rare iron fens in the San Juan Mountains of Colorado are frequently in poor condition due to mining, roads and ditches, which have left much of the fen completely bare of vegetation. Natural revegetation is slow to occur in the bare areas because of severe frost heave in the cold mountain climate. Therefore, experimental revegetation plots were conducted in a factorial design with mulching and no mulching, crossed with moss diaspores, sedge transplants, and moss and sedge combined. Mulching influenced surface soil temperatures by reducing the midday highs and increasing the night-time lows, which decreased the frequency and amount of frost heave. Peat moisture also modified frost heave, with the greatest frost heaving occurring near 75 % peat moisture content (water table 10–20 cm below the surface and the least when soils were either wetter or drier. Moss survival was dependent on mulch, with no moss surviving in plots without mulch. Mulching also increased sedge transplant survival. In summary, mulching significantly increased the success of vegetation restoration efforts for frost heave areas in mountain fens.

  14. Profile of prospective bioengineering students at National University of San Juan

    International Nuclear Information System (INIS)

    Lopez, N; Puzzella, A; Zabala, A; Demartini, H; Alborch, A; Cabrera, L

    2007-01-01

    The low percentage of students (43 % of applicants) that passed the entrance exams for the bioengineering career at the National University of San Juan in 2007, plus the historical situation of desertion in first year (about 50%), motivated the application of a diagnostic test to prospective students of this career. The aim of this test was to obtain information about the competences acquired by students to solve problems in different contexts using basic mathematical tools, reading comprehension skills to understand texts, graphs and tables. Although this test was sat by the entire population of applicants of the current school year, only the results belonging to bioengineering students are the ones presented for the purpose of this work. However, students of other disciplines of the school of engineering also have similar problems. From the analysis of the answers to the different items, it can be observed that there are serious difficulties in the development of basic capacities to successfully take the courses of this career

  15. Characterization and management of patients with retroperitoneal sarcoma, Hospital San Juan de Dios 2007-2012

    International Nuclear Information System (INIS)

    Batista Rodriguez, Gabriela

    2013-01-01

    Patients diagnosed with retroperitoneal sarcoma at the Hospital San Juan de Dios were characterized during the years 2007 to 2012. The population framework was taken from the hospital's Pathology service database. A total of 15 patients older than 12 years with a diagnosis of sarcoma or malignant fibrous histiocytoma and that the site of origin of the biopsy was the retroperitoneum were selected. The data of the selected patients were collected through a data collection form. The variables included were: age, sex, origin, dates of importance (income, discharge, surgery, complication), presence and type of complications, pathological staging, type of surgery, comorbidities, presence and date of recurrence, treatment with chemotherapy and radiotherapy, death and causes of death. A descriptive analysis with the calculation of frequency measurements (absolute and relative) was carried out to describe the occurrence of the event. The analysis of proportional risks was performed considering the relationship between death and time, the possible relationship with the service of approach, clinical stage and resection status was also assessed. Information on diagnosis, evaluation, staging and management of retroperitoneal sarcomas is cited in the theoretical framework [es

  16. From surfaces to magnetic properties: special section dedicated to Juan Rojo

    Science.gov (United States)

    Mascaraque, A.; Rodríguez de la Fuente, O.; González-Barrio, Miguel A.

    2013-12-01

    Surface physics and magnetism, in particular the connection between surface defects, reduced dimensionality or size, crystal structure, electronic density of states and the mechanical and magnetic properties of solids, were always at the core of Juan Rojo's scientific interest and output. Both fields seem to meet at the nanoscale, a privileged playing field which is ideal for testing theoretical concepts, exploring new physics or probing a wealth of new, stunning and unheard-of applications. Upon reducing size or dimensionality, either in bulk systems or in thin films, surfaces and surface effects are telling. Thus, for instance, an ultra-thin coating can make nanoparticles of non-magnetic materials exhibit magnetic behaviour; or atomic steps can modify the local mechanical properties of a metallic single crystal. In this special section there are eight invited papers by disciples and close collaborators of Juan Rojo, that cover an ample spectrum of the above mentioned topics. The first paper, by Palacio et al, investigates the temperature and oxygen partial pressure conditions for FeO mono- and bi-layer growth on Ru(0001). The following paper, by Cortés-Gil et al, reports on the dramatic change in the electric resistivity of the manganite perovskite (La0.5Ca0.5)z MnO3 as a function of Ca content, an effect related to the removal of a charge-ordered state and a magnetic transition. Baeza et al study biomaterials for bone cancer treatment and skeletal reinforcing, as well as targeted magnetic nanoparticles used for intracell hyperthermia in cancer therapies. In the following paper, Marcano et al, assisted by a multi-technique approach, revisit the extraordinarily rich magnetic phase diagram of the Kondo system CeNi1- x Cux down to 100 mK temperatures. The magnetic field dependence of the martensitic transition temperature of the meta-magnetic shape memory alloy Ni50Mn34.5In15.5 in a crystalline and amorphous phase, in fields up to 13 T, is the subject of the paper

  17. The pastoral implications of human freedom according to Juan Luis Segundo

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    Vicente de Paula Ferreira

    2016-09-01

    Full Text Available The paper aims to reflect the issue of human freedom based on the underlying principles of the Christian faith in a time of anthropological vulnerability, especially in Latin American. It holds that Christianity must insist on its proposal to promote universal goodwill, despite a human horizon marked by selfishness and lust for power and money. This approach presupposes a radical position of a listener of the divine mystery, revealed in Jesus Christ, as a way to fulfill the human condition. Theoretical framework: Liberation Theology, in the view of Juan Luis Segundo, and its well-established tradition of transforming realities of injustice through faith, comprises the core argument of this text. Findings: Christian salvation necessarily implies the kenosis (κένωσις of Jesus, i.e., Christ “emptied Himself” (Ph. 2:7, and through His humble dispossession, He broke with all closed systems of the world, and inaugurated a new venture of a liberated freedom: the agape of love. Conclusion: Christian praxis as daily care for the poorest and prophecy of forgiveness rescues the memory of the victims of all forms of human selfishness. 

  18. The abominable tale of progress. The monsters of Juan Rodolfo Wilcock, between comedy and horror

    Directory of Open Access Journals (Sweden)

    Katia Trifiro'

    2016-11-01

    Full Text Available Il presente contributo intende esplorare le strategie di demistificazione grottesca impiegate da Juan Rodolfo Wilcock per ritrarre l’impasse culturale della società italiana degli anni Sessanta, catapultata nella vacua frenesia di un improvviso benessere. Attraverso il suo «ridente sguardo cadaverico», come lo definisce Pasolini, la seduzione effimera del miracolo economico e, soprattutto, le sue disfunzioni, assumono le sembianze di una funerea profezia sociale, alimentata dal potere corrosivo e destabilizzante della satira. In particolare, sarà indagata la categoria dei mostri, cui l’autore italo-argentino fa sistematicamente ricorso allestendo, sia nei racconti che a teatro, una galleria di tipi umani e sub-umani esilarante e, al contempo, tragica. In questo sottobosco urbano, popolato da strambi personaggi e creature zoomorfe, i clamori luccicanti e le malie del progresso si degradano in formule stereotipe e oscene fiabe, trasmesse dagli schermi televisivi ad una massa senza miti, certificando la diagnosi lancinante di un disagio profondo.

  19. Permafrost distribution map of San Juan Dry Andes (Argentina) based on rock glacier sites

    Science.gov (United States)

    Esper Angillieri, María Yanina

    2017-01-01

    Rock glaciers are frozen water reservoirs in mountainous areas. Water resources are important for the local populations and economies. The presence of rock glaciers is commonly used as a direct indicator of mountain permafrost conditions. Over 500 active rock glaciers have been identified, showing that elevations between 3500 and 4500 m asl., a south-facing or east-facing aspect, areas with relatively low solar radiation and low mean annual air temperature (-4 to 0 °C) favour the existence of rock glaciers in this region. The permafrost probability model, for Dry Andes of San Juan Province between latitudes 28º30‧S and 32°30‧S, have been analyzed by logistic regression models based on the active rock glaciers occurrence in relation to some topoclimatic variables such as altitude, aspect, mean annual temperature, mean annual precipitation and solar radiation, using optical remote sensing techniques in a GIS environment. The predictive performances of the model have been estimated by known rock glaciers locations and by the area under the receiver operating characteristic curve (AUROC). This regional permafrost map can be applied by the Argentinean Government for their recent initiatives which include creating inventories, monitoring and studying ice masses along the Argentinean Andes. Further, this generated map provides valuable input data for permafrost scenarios and contributes to a better understanding of our geosystem.

  20. Chemical quality and oxidative stability of extra virgin olive oils from San Juan province (Argentina).

    Science.gov (United States)

    Ceci, Liliana N; Mattar, Susana B; Carelli, Amalia A

    2017-10-01

    This study provides information about the chemical quality (quality indices, fatty acid profile, total polyphenols (PPs), tocopherols and pigments) and oxidative stability index (OSI) of virgin olive oils of Arbequina, Changlot Real and Coratina cultivars (San Juan province, Argentina). The influence of the cultivar and the effect of earlier harvest dates on the yields (OY), quality and OSI of the oils were also evaluated. All the oils were classified as extra virgin. The OY (L/100kg) averaged: Arbequina=13.2, Changlot Real=21.3, Coratina=18.3. The oleic acid (O) percentage, oleic to linoleic plus linolenic ratio [O/(L+Ln)], PPs and OSI were highly dependent on cultivar (Arbequina

  1. The Mystical Backwards in the Story “Rito” by Juan García Ponce

    Directory of Open Access Journals (Sweden)

    Alfredo Rosas Martínez

    2015-02-01

    Full Text Available Mysticism has not always gone through the same road nor in the same sense.In some works of literature it is presented as an inverted mysticism. In the story“Rito”, by Juan García Ponce, a mystical process is performed traversing theways of evil. Commencing with the nakedness of a Young beautiful woman’s body, the eroticism and the sexual act, it is intendend that the Spirit of Divinity manifests itself. In this story the transgression and perversion of the socialnorms of behavior within marriage is present. The characters in the story, Lilianaand Arturo are spouses. However, they like to practice a ritual in whichthey invite to dinner an unknown individual. The purpose is to put into practicethe “laws of hospitality” that the French writer Pierre Klossowski proposed in his novels Roberte tonight and Revocation of the Edict of Nantes. In the secularlevel, the husband, as master of the house, must access the mystical level of Host; in turn, the Mistress of the house, as wife, must access the mystical levelof Hostess. Thus, the husband must offer his wife to the guest, as the unknownThird. The husband, as Host, contemplates his wife’s sexual act with the guest:she is the hostess; and the unknown Third functions as the angelic element thatconnects the profane to the sacred. In the sexual act and in the nakedness of the beautiful woman’s body is manifest the Spirit of Divinity.

  2. Homenaje al Profesor Académico Juan Di Doménico.

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    Roberto Vergara Támara

    2004-03-01

    Full Text Available

    Sesión solemne del 25 de septiembre de 2003

    Todos hemos sido, en una u otra forma sus discipulos, por lo que todos sentimos este dia, en el fondo del corazón como de especial regocijo, de expresión de una simpatía que sin duda se ha ganado el
    Profesor Di Doménico a lo largo de su vida, por su manera de ser, por su gentileza, por su severidad cuando fue necesario y por la excelente manera de estimular novedades que ha tenido siempre.

    Juan Mendoza-Vega
    "Una leyenda o un mito"


    Es para mí motivo de especial complacencia festejar los 90 años del Profesor Juan Di Doménico Di Ruggiero, por una generosa designación de la Junta Directiva.
    Cuando el señor Académico Germán Peña me notificó la significativa distinción empecé a rebuscar
    en mi memoria antigua la vida y la obra del Profesor Juan Di Doménico y se me llenaron de exuberancias la antigua y la joven. Irrumpió en mi mente la frase paradigmática: "los árboles no dejan ver el bosque", y al poco andar, con el sable campeón del maestro fui desbrozando esa riqueza vital, ese terremoto humano, ese polifacético personaje universal que fue puliendo sus múltiples facetas con el buril de un escultor de almas y de hombres. Con mucha astucia, con mucho método haremos la sinopsis de este insólito e inverosimil personaje.

    Hubiera querido tener el talento, la inteligencia, la astucia y la donosura del verbo, necesarios para pergeñar tan siquiera un bosquejo de lo que veremos ante esta Honorable Academia y poder orgulloso decir el elogio sísmico de este terremoto humano que ya es leyenda y mito.

    Nació en Panamá en 1913. Sus padres eran italianos: Francisco Di Doménico y María Di Ruggiero. Sus
    primeros estudios los realizó en la Escuela Ricaurte y el Colegio Gimnasio Moderno. Luego se trasladó a

  3. Sedimentary history and economic geology of San Juan Basin, New Mexico and Colorado

    International Nuclear Information System (INIS)

    Peterson, J.A.; LeLeit, A.J.; Spencer, C.W.; Ullrich, R.A.

    1981-01-01

    The San Juan Basin contains up to 15,000 ft of sedimentary rocks ranging in age from Cambrian to Recent. The earliest development of the area as a sedimentary basin or trough apparently took place in Pennsylvanian time, and the basin was maintained, with changing rates of subsidence and filling, through the remainder of geologic time. During the Early Paleozoic, sedimentation was dominated by marine transgressions across the northwestern flank of the regional Transcontinental Arch. The Late Paleozoic history was strongly influenced by tectonism related to development of the Ancestral Rocky Mountains Uplifts and associated downwarping. The Early Mesozoic is characterized by fluvial and eolian environments, interrupted periodically by thin marine transgressive deposits of nearshore redbeds. The final Mesozoic event was the widespread Late Cretaceous marine transgression which deposited a thick cyclic sequence of marine gray shale and sandstone, with interbedded coal. Late Tertiary regional uplift and resulting volcanism were accompanied by a regional dissection of the area by stream systems that evolved into the present drainage pattern of superposed streams. The sedimentary history is directly related to the occurrence of economic deposits in the basin. Major reserves of petroleum and gas are in Cretaceous and Pennsylvanian rocks, coal in Cretaceous, and uranium in Jurassic and Cretaceous. Abstract only

  4. Water Scarcity and Degradation in the Rio San Juan Watershed of Northeastern Mexico

    Directory of Open Access Journals (Sweden)

    José de Jesús Návar Cháidez

    2011-01-01

    Full Text Available El agua se ha convertido en un recurso limitante para el desarrollo en la cuenca del río San Juan, el mayor tributario del bajo Río Bravo, del noreste de México. Señales de manejo no sostenible incluyen: la transferencia del agua entre cuencas, la disminución del nivel del agua de los acuíferos, la presencia de caudales mínimos e inexistentes en varios segmentos de los ríos, aumento en los niveles de contaminación, altos consumos per cápita, baja eficiencia en la agricultura, el disturbio de los ecosistemas acuáticos y los problemas sociales entre usos e usuarios, todos estos magnificados por la presencia de sequías recurrentes de diferentes escalas temporales. En este reporte se muestra que el reforzamiento de las prácticas de manejo sostenible del agua podrían cumplir con las demandas para la agricultura, la población, la industria y el medio ambiente además de aliviar la inestabilidad social pero se requiere de políticas para aumentar la eficiencia en el uso en todos los sectores de la economía además de nuevas formas de integración que crucen las fronteras interdisciplinarias y profesionales.

  5. Ichthyophonus in Puget Sound rockfish from the San Juan Islands archipelago and Puget Sound, Washington, USA

    Science.gov (United States)

    Halos, D.; Hart, S.A.; Hershberger, P.; Kocan, R.

    2005-01-01

    In vitro explant cultures identified Ichthyophonus in 10.9% of 302 Puget Sound rockfish Sebastes emphaeus sampled from five sites in the San Juan Islands archipelago and Puget Sound, Washington, in 2003. None of the infected fish exhibited visible lesions and only a single fish was histologically positive. Significantly more females were infected (12.4%) than males (6.8%), and while infected males were only detected at two of the five sites, infected females were identified at all sites, with no significant differences in infection prevalence. Genomic sequences of Ichthyophonus isolates obtained from Puget Sound rockfish, Pacific herring Clupea pallasii, and Yukon River Chinook salmon Oncorhynchus tshawytscha were identical in both the A and B regions of the small subunit 18S ribosomal DNA but were different from Ichthyophonus sequences previously isolated from four different species of rockfish from the northeastern Pacific Ocean. Ichthyophonus in Puget Sound rockfish may not have been previously detected because the infection is subclinical in this species and earlier investigators did not utilize in vitro techniques for diagnosis of ichthyophoniasis. However, since clinical ichthyophoniasis has recently been identified in several other species of northeast Pacific rockfishes, it is hypothesized that this either is an emerging disease resulting from changing marine conditions or the result of introduction by infected southern species that appear during periodic El Nin??o events. ?? Copyright by the American Fisheries Society 2005.

  6. Juan Eduardo Cirlot. Cuando la palabra y la letra llaman a su forma

    Directory of Open Access Journals (Sweden)

    Clara Janés

    2014-03-01

    Full Text Available Juan Eduardo Cirlot es uno de los grandes innovadores en el campo de la poesía del siglo XX española. Crítico de arte y ensayista, además de poeta y músico, su relación con la familia Buñuel le impulsa a ponerse en contacto con André Breton y los surrealistas de París. Incorpora las técnicas tanto surrealistas como Dadá, pero va mucho más lejos. Su conocimiento de la música contemporánea que adopta el serialismo de Schönberg, el cual parte de la Cabala hebraica -que él transforma en la poesía permutatoria-, su atrevimiento al aproximarse a las antiguas fórmulas mágicas egipcias, sus hallazgos fono-visuales le llevan a cubrir el abanico más amplio y atrevido de la vanguardia hispana de su tiempo.

  7. Metagenome sequencing and 98 microbial genomes from Juan de Fuca Ridge flank subsurface fluids

    Science.gov (United States)

    Jungbluth, Sean P.; Amend, Jan P.; Rappé, Michael S.

    2017-03-01

    The global deep subsurface biosphere is one of the largest reservoirs for microbial life on our planet. This study takes advantage of new sampling technologies and couples them with improvements to DNA sequencing and associated informatics tools to reconstruct the genomes of uncultivated Bacteria and Archaea from fluids collected deep within the Juan de Fuca Ridge subseafloor. Here, we generated two metagenomes from borehole observatories located 311 meters apart and, using binning tools, retrieved 98 genomes from metagenomes (GFMs). Of the GFMs, 31 were estimated to be >90% complete, while an additional 17 were >70% complete. Phylogenomic analysis revealed 53 bacterial and 45 archaeal GFMs, of which nearly all were distantly related to known cultivated isolates. In the GFMs, abundant Bacteria included Chloroflexi, Nitrospirae, Acetothermia (OP1), EM3, Aminicenantes (OP8), Gammaproteobacteria, and Deltaproteobacteria, while abundant Archaea included Archaeoglobi, Bathyarchaeota (MCG), and Marine Benthic Group E (MBG-E). These data are the first GFMs reconstructed from the deep basaltic subseafloor biosphere, and provide a dataset available for further interrogation.

  8. water quality of the high-montane Juan Cojo and El Salado's basins (Glrardota - Antioqula, Colombia)

    International Nuclear Information System (INIS)

    Gomez Marin, Ana Maria; Naranjo Fernandez, Dario; Martinez, Andres Alfonso; Gallego Suarez, Dario de Jesus

    2007-01-01

    This work is a preliminary diagnosis of the actual state of the high-montane water sources located in the Juan Cojo's and El Salado's basins of the NE side of the Aburra valley' both belong to the Girardota municipality (6 degrades 20.951' N, 75 celsius 27.199' W between 1900 and 2500 meter above sea level in the central montane chain. in order to achieve this work several samples were taken in august 10, 11, 17 and 19 of 2004. this preliminary study includes the physicochemical and microbiological evaluation of 30 sampling points. just one of the 30 sampling points exhibited absence of microbiological pollution due to fecal and total coliforms. this fact suggests bad practices in the final disposal of domestic and farming water residuals. in the other hand, the physicochemical and the ICA (water quality index) evaluation reveal that the sampled water sources exhibit typical characteristics of common low-montane ,non-polluted water sources. in other words, although pollution levels found in those water sources are not alarming, they do not exhibit the typical pollution levels found in natural high-montane waters, as they should, even we could find some sampling points with meso-eutrophic conditions

  9. Progress in SLR-GPS co-location at San Juan (Argentina) station

    Science.gov (United States)

    Luis, Hernan; Rojas, Alvis; Adarvez, Sonia; Quinteros, Johana; Cobos, Pablo; Aracena, Andrés; Pacheco, Ana M.; Podestá, Ricardo; Actis, Eloy V.; Li, Jinzeng; Yin, Zhiqiang; Wang, Rui; Huang, Dongping; Márquez, Raúl

    2012-08-01

    From February, 2006, performing a Cooperation Agreement with National Astronomical Observatories of China (NAOC) of the Chinese Academy of Sciences (CAS), Observatorio Astronómico Félix Aguilar (OAFA) of Universidad Nacional de San Juan (UNSJ) is operating a SLR System (ILRS 7406 Station). From the beginning of 2012 a GPS Aztech - Micro Z CGRS is operative at the same place, which made the SLR - GPS co - location possible. The prior objective is to reach co - location between both techniques, so the Station became of 1st order in ITRF net. For that we study and adopt an appropriate strategy to select and place Survey Control Points that ensures higher precision in determination of 3D vectors between the selected reference point s. Afterwards we perform translocation tasks of receptor and antenna checking that the GPS verifies builder standards. Then we design and compensate survey control network, by means of software of our own draught. We expect to obtain definitive local ties with precision better than 3 mm, as suggested by IERS for co - located stations. There are very few stations with co - located spatial techniques in the Southern Hemisphere, so it is of great importance to have one in Argentina for improve our participation in IERS on the new realizations of ITRF from now on.

  10. The constitution of marginalized identity in Signs of identity by Juan Goytisolo

    Directory of Open Access Journals (Sweden)

    Jelica Veljović

    2014-12-01

    Full Text Available The main objective of the article is to investigate the modes of constitution of a marginalized and exiled identity in the novel Signs of identity by Juan Goytisolo. It is categorised as a “testimony and postwar novel”, and the subjects’ constant search of themselves, of their Self and all the elements that constitute their identity is central to the work. The novel is set in the postwar socio-historical period and the protagonist – Alvaro Mendiola – searches for his identity in his childhood memories and family pictures, but also amongst all the Others whose life stories intertwine with his journey of identification. Tracing his line of identity formation, we found three different routes: the first through the genealogical records, the second through the concept of Otherness and the last one through love. We find Identity as a kaleidoscope containing all the Others who served as moulds for his Identity, yet leaving it undefined and incomplete. Therefore, the identity of an exiled and marginalized individual is always in flux, continually reinitiating the constitution of the Self that had been eradicated from its first and formative imagery: the family and the fatherland.

  11. Profile of prospective bioengineering students at National University of San Juan

    Science.gov (United States)

    Lopez, N.; Puzzella, A.; Zabala, A.; Demartini, H.; Alborch, A.; Cabrera, L.

    2007-11-01

    The low percentage of students (43 % of applicants) that passed the entrance exams for the bioengineering career at the National University of San Juan in 2007, plus the historical situation of desertion in first year (about 50%), motivated the application of a diagnostic test to prospective students of this career. The aim of this test was to obtain information about the competences acquired by students to solve problems in different contexts using basic mathematical tools, reading comprehension skills to understand texts, graphs and tables. Although this test was sat by the entire population of applicants of the current school year, only the results belonging to bioengineering students are the ones presented for the purpose of this work. However, students of other disciplines of the school of engineering also have similar problems. From the analysis of the answers to the different items, it can be observed that there are serious difficulties in the development of basic capacities to successfully take the courses of this career.

  12. Profile of prospective bioengineering students at National University of San Juan

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, N [School of Engineering. National University of San Juan. Av. San MartIn 1109 (Oeste). CP 5400. San Juan (Argentina); Puzzella, A [School of Philosophy, Humanities and Arts. National University of San Juan. I de la Roza 230 (Oeste). CP 5400. San Juan (Argentina); Zabala, A [School of Engineering. National University of San Juan. Av. San MartIn 1109 (Oeste). CP 5400. San Juan (Argentina); Demartini, H [School of Engineering. National University of San Juan. Av. San MartIn 1109 (Oeste). CP 5400. San Juan (Argentina); Alborch, A [School of Philosophy, Humanities and Arts. National University of San Juan. I de la Roza 230 (Oeste). CP 5400. San Juan (Argentina); Cabrera, L [' Col. Central Universitario Dr. M. Moreno' Secondary School. National University of San Juan. I de la Roza 230 (Oeste). CP 5400. San Juan (Argentina)

    2007-11-15

    The low percentage of students (43 % of applicants) that passed the entrance exams for the bioengineering career at the National University of San Juan in 2007, plus the historical situation of desertion in first year (about 50%), motivated the application of a diagnostic test to prospective students of this career. The aim of this test was to obtain information about the competences acquired by students to solve problems in different contexts using basic mathematical tools, reading comprehension skills to understand texts, graphs and tables. Although this test was sat by the entire population of applicants of the current school year, only the results belonging to bioengineering students are the ones presented for the purpose of this work. However, students of other disciplines of the school of engineering also have similar problems. From the analysis of the answers to the different items, it can be observed that there are serious difficulties in the development of basic capacities to successfully take the courses of this career.

  13. Parallel processing Monte Carlo radiation transport codes

    International Nuclear Information System (INIS)

    McKinney, G.W.

    1994-01-01

    Issues related to distributed-memory multiprocessing as applied to Monte Carlo radiation transport are discussed. Measurements of communication overhead are presented for the radiation transport code MCNP which employs the communication software package PVM, and average efficiency curves are provided for a homogeneous virtual machine

  14. Monte Carlo determination of heteroepitaxial misfit structures

    DEFF Research Database (Denmark)

    Baker, J.; Lindgård, Per-Anker

    1996-01-01

    We use Monte Carlo simulations to determine the structure of KBr overlayers on a NaCl(001) substrate, a system with large (17%) heteroepitaxial misfit. The equilibrium relaxation structure is determined for films of 2-6 ML, for which extensive helium-atom scattering data exist for comparison...

  15. The Monte Carlo applied for calculation dose

    International Nuclear Information System (INIS)

    Peixoto, J.E.

    1988-01-01

    The Monte Carlo method is showed for the calculation of absorbed dose. The trajectory of the photon is traced simulating sucessive interaction between the photon and the substance that consist the human body simulator. The energy deposition in each interaction of the simulator organ or tissue per photon is also calculated. (C.G.C.) [pt

  16. Monte Carlo code for neutron radiography

    International Nuclear Information System (INIS)

    Milczarek, Jacek J.; Trzcinski, Andrzej; El-Ghany El Abd, Abd; Czachor, Andrzej

    2005-01-01

    The concise Monte Carlo code, MSX, for simulation of neutron radiography images of non-uniform objects is presented. The possibility of modeling the images of objects with continuous spatial distribution of specific isotopes is included. The code can be used for assessment of the scattered neutron component in neutron radiograms

  17. Monte Carlo code for neutron radiography

    Energy Technology Data Exchange (ETDEWEB)

    Milczarek, Jacek J. [Institute of Atomic Energy, Swierk, 05-400 Otwock (Poland)]. E-mail: jjmilcz@cyf.gov.pl; Trzcinski, Andrzej [Institute for Nuclear Studies, Swierk, 05-400 Otwock (Poland); El-Ghany El Abd, Abd [Institute of Atomic Energy, Swierk, 05-400 Otwock (Poland); Nuclear Research Center, PC 13759, Cairo (Egypt); Czachor, Andrzej [Institute of Atomic Energy, Swierk, 05-400 Otwock (Poland)

    2005-04-21

    The concise Monte Carlo code, MSX, for simulation of neutron radiography images of non-uniform objects is presented. The possibility of modeling the images of objects with continuous spatial distribution of specific isotopes is included. The code can be used for assessment of the scattered neutron component in neutron radiograms.

  18. Monte Carlo method in neutron activation analysis

    International Nuclear Information System (INIS)

    Majerle, M.; Krasa, A.; Svoboda, O.; Wagner, V.; Adam, J.; Peetermans, S.; Slama, O.; Stegajlov, V.I.; Tsupko-Sitnikov, V.M.

    2009-01-01

    Neutron activation detectors are a useful technique for the neutron flux measurements in spallation experiments. The study of the usefulness and the accuracy of this method at similar experiments was performed with the help of Monte Carlo codes MCNPX and FLUKA

  19. Atomistic Monte Carlo simulation of lipid membranes

    DEFF Research Database (Denmark)

    Wüstner, Daniel; Sklenar, Heinz

    2014-01-01

    Biological membranes are complex assemblies of many different molecules of which analysis demands a variety of experimental and computational approaches. In this article, we explain challenges and advantages of atomistic Monte Carlo (MC) simulation of lipid membranes. We provide an introduction...... of local-move MC methods in combination with molecular dynamics simulations, for example, for studying multi-component lipid membranes containing cholesterol....

  20. Computer system for Monte Carlo experimentation

    International Nuclear Information System (INIS)

    Grier, D.A.

    1986-01-01

    A new computer system for Monte Carlo Experimentation is presented. The new system speeds and simplifies the process of coding and preparing a Monte Carlo Experiment; it also encourages the proper design of Monte Carlo Experiments, and the careful analysis of the experimental results. A new functional language is the core of this system. Monte Carlo Experiments, and their experimental designs, are programmed in this new language; those programs are compiled into Fortran output. The Fortran output is then compiled and executed. The experimental results are analyzed with a standard statistics package such as Si, Isp, or Minitab or with a user-supplied program. Both the experimental results and the experimental design may be directly loaded into the workspace of those packages. The new functional language frees programmers from many of the details of programming an experiment. Experimental designs such as factorial, fractional factorial, or latin square are easily described by the control structures and expressions of the language. Specific mathematical modes are generated by the routines of the language

  1. Scalable Domain Decomposed Monte Carlo Particle Transport

    Energy Technology Data Exchange (ETDEWEB)

    O' Brien, Matthew Joseph [Univ. of California, Davis, CA (United States)

    2013-12-05

    In this dissertation, we present the parallel algorithms necessary to run domain decomposed Monte Carlo particle transport on large numbers of processors (millions of processors). Previous algorithms were not scalable, and the parallel overhead became more computationally costly than the numerical simulation.

  2. Monte Carlo methods beyond detailed balance

    NARCIS (Netherlands)

    Schram, Raoul D.; Barkema, Gerard T.|info:eu-repo/dai/nl/101275080

    2015-01-01

    Monte Carlo algorithms are nearly always based on the concept of detailed balance and ergodicity. In this paper we focus on algorithms that do not satisfy detailed balance. We introduce a general method for designing non-detailed balance algorithms, starting from a conventional algorithm satisfying

  3. Monte Carlo studies of ZEPLIN III

    CERN Document Server

    Dawson, J; Davidge, D C R; Gillespie, J R; Howard, A S; Jones, W G; Joshi, M; Lebedenko, V N; Sumner, T J; Quenby, J J

    2002-01-01

    A Monte Carlo simulation of a two-phase xenon dark matter detector, ZEPLIN III, has been achieved. Results from the analysis of a simulated data set are presented, showing primary and secondary signal distributions from low energy gamma ray events.

  4. Biases in Monte Carlo eigenvalue calculations

    Energy Technology Data Exchange (ETDEWEB)

    Gelbard, E.M.

    1992-12-01

    The Monte Carlo method has been used for many years to analyze the neutronics of nuclear reactors. In fact, as the power of computers has increased the importance of Monte Carlo in neutronics has also increased, until today this method plays a central role in reactor analysis and design. Monte Carlo is used in neutronics for two somewhat different purposes, i.e., (a) to compute the distribution of neutrons in a given medium when the neutron source-density is specified, and (b) to compute the neutron distribution in a self-sustaining chain reaction, in which case the source is determined as the eigenvector of a certain linear operator. In (b), then, the source is not given, but must be computed. In the first case (the ``fixed-source`` case) the Monte Carlo calculation is unbiased. That is to say that, if the calculation is repeated (``replicated``) over and over, with independent random number sequences for each replica, then averages over all replicas will approach the correct neutron distribution as the number of replicas goes to infinity. Unfortunately, the computation is not unbiased in the second case, which we discuss here.

  5. Biases in Monte Carlo eigenvalue calculations

    Energy Technology Data Exchange (ETDEWEB)

    Gelbard, E.M.

    1992-01-01

    The Monte Carlo method has been used for many years to analyze the neutronics of nuclear reactors. In fact, as the power of computers has increased the importance of Monte Carlo in neutronics has also increased, until today this method plays a central role in reactor analysis and design. Monte Carlo is used in neutronics for two somewhat different purposes, i.e., (a) to compute the distribution of neutrons in a given medium when the neutron source-density is specified, and (b) to compute the neutron distribution in a self-sustaining chain reaction, in which case the source is determined as the eigenvector of a certain linear operator. In (b), then, the source is not given, but must be computed. In the first case (the fixed-source'' case) the Monte Carlo calculation is unbiased. That is to say that, if the calculation is repeated ( replicated'') over and over, with independent random number sequences for each replica, then averages over all replicas will approach the correct neutron distribution as the number of replicas goes to infinity. Unfortunately, the computation is not unbiased in the second case, which we discuss here.

  6. Dynamic bounds coupled with Monte Carlo simulations

    Energy Technology Data Exchange (ETDEWEB)

    Rajabalinejad, M., E-mail: M.Rajabalinejad@tudelft.n [Faculty of Civil Engineering, Delft University of Technology, Delft (Netherlands); Meester, L.E. [Delft Institute of Applied Mathematics, Delft University of Technology, Delft (Netherlands); Gelder, P.H.A.J.M. van; Vrijling, J.K. [Faculty of Civil Engineering, Delft University of Technology, Delft (Netherlands)

    2011-02-15

    For the reliability analysis of engineering structures a variety of methods is known, of which Monte Carlo (MC) simulation is widely considered to be among the most robust and most generally applicable. To reduce simulation cost of the MC method, variance reduction methods are applied. This paper describes a method to reduce the simulation cost even further, while retaining the accuracy of Monte Carlo, by taking into account widely present monotonicity. For models exhibiting monotonic (decreasing or increasing) behavior, dynamic bounds (DB) are defined, which in a coupled Monte Carlo simulation are updated dynamically, resulting in a failure probability estimate, as well as a strict (non-probabilistic) upper and lower bounds. Accurate results are obtained at a much lower cost than an equivalent ordinary Monte Carlo simulation. In a two-dimensional and a four-dimensional numerical example, the cost reduction factors are 130 and 9, respectively, where the relative error is smaller than 5%. At higher accuracy levels, this factor increases, though this effect is expected to be smaller with increasing dimension. To show the application of DB method to real world problems, it is applied to a complex finite element model of a flood wall in New Orleans.

  7. Dynamic bounds coupled with Monte Carlo simulations

    NARCIS (Netherlands)

    Rajabali Nejad, Mohammadreza; Meester, L.E.; van Gelder, P.H.A.J.M.; Vrijling, J.K.

    2011-01-01

    For the reliability analysis of engineering structures a variety of methods is known, of which Monte Carlo (MC) simulation is widely considered to be among the most robust and most generally applicable. To reduce simulation cost of the MC method, variance reduction methods are applied. This paper

  8. Design and analysis of Monte Carlo experiments

    NARCIS (Netherlands)

    Kleijnen, Jack P.C.; Gentle, J.E.; Haerdle, W.; Mori, Y.

    2012-01-01

    By definition, computer simulation or Monte Carlo models are not solved by mathematical analysis (such as differential calculus), but are used for numerical experimentation. The goal of these experiments is to answer questions about the real world; i.e., the experimenters may use their models to

  9. Some problems on Monte Carlo method development

    International Nuclear Information System (INIS)

    Pei Lucheng

    1992-01-01

    This is a short paper on some problems of Monte Carlo method development. The content consists of deep-penetration problems, unbounded estimate problems, limitation of Mdtropolis' method, dependency problem in Metropolis' method, random error interference problems and random equations, intellectualisation and vectorization problems of general software

  10. Monte Carlo simulations in theoretical physic

    International Nuclear Information System (INIS)

    Billoire, A.

    1991-01-01

    After a presentation of the MONTE CARLO method principle, the method is applied, first to the critical exponents calculations in the three dimensions ISING model, and secondly to the discrete quantum chromodynamic with calculation times in function of computer power. 28 refs., 4 tabs

  11. Monte Carlo method for random surfaces

    International Nuclear Information System (INIS)

    Berg, B.

    1985-01-01

    Previously two of the authors proposed a Monte Carlo method for sampling statistical ensembles of random walks and surfaces with a Boltzmann probabilistic weight. In the present paper we work out the details for several models of random surfaces, defined on d-dimensional hypercubic lattices. (orig.)

  12. Monte Carlo simulation of the microcanonical ensemble

    International Nuclear Information System (INIS)

    Creutz, M.

    1984-01-01

    We consider simulating statistical systems with a random walk on a constant energy surface. This combines features of deterministic molecular dynamics techniques and conventional Monte Carlo simulations. For discrete systems the method can be programmed to run an order of magnitude faster than other approaches. It does not require high quality random numbers and may also be useful for nonequilibrium studies. 10 references

  13. Variance Reduction Techniques in Monte Carlo Methods

    NARCIS (Netherlands)

    Kleijnen, Jack P.C.; Ridder, A.A.N.; Rubinstein, R.Y.

    2010-01-01

    Monte Carlo methods are simulation algorithms to estimate a numerical quantity in a statistical model of a real system. These algorithms are executed by computer programs. Variance reduction techniques (VRT) are needed, even though computer speed has been increasing dramatically, ever since the

  14. Gian-Carlos Rota and Combinatorial Math.

    Science.gov (United States)

    Kolata, Gina Bari

    1979-01-01

    Presents the first of a series of occasional articles about mathematics as seen through the eyes of its prominent scholars. In an interview with Gian-Carlos Rota of the Massachusetts Institute of Technology he discusses how combinatorial mathematics began as a field and its future. (HM)

  15. Coded aperture optimization using Monte Carlo simulations

    International Nuclear Information System (INIS)

    Martineau, A.; Rocchisani, J.M.; Moretti, J.L.

    2010-01-01

    Coded apertures using Uniformly Redundant Arrays (URA) have been unsuccessfully evaluated for two-dimensional and three-dimensional imaging in Nuclear Medicine. The images reconstructed from coded projections contain artifacts and suffer from poor spatial resolution in the longitudinal direction. We introduce a Maximum-Likelihood Expectation-Maximization (MLEM) algorithm for three-dimensional coded aperture imaging which uses a projection matrix calculated by Monte Carlo simulations. The aim of the algorithm is to reduce artifacts and improve the three-dimensional spatial resolution in the reconstructed images. Firstly, we present the validation of GATE (Geant4 Application for Emission Tomography) for Monte Carlo simulations of a coded mask installed on a clinical gamma camera. The coded mask modelling was validated by comparison between experimental and simulated data in terms of energy spectra, sensitivity and spatial resolution. In the second part of the study, we use the validated model to calculate the projection matrix with Monte Carlo simulations. A three-dimensional thyroid phantom study was performed to compare the performance of the three-dimensional MLEM reconstruction with conventional correlation method. The results indicate that the artifacts are reduced and three-dimensional spatial resolution is improved with the Monte Carlo-based MLEM reconstruction.

  16. Biases in Monte Carlo eigenvalue calculations

    International Nuclear Information System (INIS)

    Gelbard, E.M.

    1992-01-01

    The Monte Carlo method has been used for many years to analyze the neutronics of nuclear reactors. In fact, as the power of computers has increased the importance of Monte Carlo in neutronics has also increased, until today this method plays a central role in reactor analysis and design. Monte Carlo is used in neutronics for two somewhat different purposes, i.e., (a) to compute the distribution of neutrons in a given medium when the neutron source-density is specified, and (b) to compute the neutron distribution in a self-sustaining chain reaction, in which case the source is determined as the eigenvector of a certain linear operator. In (b), then, the source is not given, but must be computed. In the first case (the ''fixed-source'' case) the Monte Carlo calculation is unbiased. That is to say that, if the calculation is repeated (''replicated'') over and over, with independent random number sequences for each replica, then averages over all replicas will approach the correct neutron distribution as the number of replicas goes to infinity. Unfortunately, the computation is not unbiased in the second case, which we discuss here

  17. Monte Carlo studies of uranium calorimetry

    International Nuclear Information System (INIS)

    Brau, J.; Hargis, H.J.; Gabriel, T.A.; Bishop, B.L.

    1985-01-01

    Detailed Monte Carlo calculations of uranium calorimetry are presented which reveal a significant difference in the responses of liquid argon and plastic scintillator in uranium calorimeters. Due to saturation effects, neutrons from the uranium are found to contribute only weakly to the liquid argon signal. Electromagnetic sampling inefficiencies are significant and contribute substantially to compensation in both systems. 17 references

  18. Uncertainty analysis in Monte Carlo criticality computations

    International Nuclear Information System (INIS)

    Qi Ao

    2011-01-01

    Highlights: ► Two types of uncertainty methods for k eff Monte Carlo computations are examined. ► Sampling method has the least restrictions on perturbation but computing resources. ► Analytical method is limited to small perturbation on material properties. ► Practicality relies on efficiency, multiparameter applicability and data availability. - Abstract: Uncertainty analysis is imperative for nuclear criticality risk assessments when using Monte Carlo neutron transport methods to predict the effective neutron multiplication factor (k eff ) for fissionable material systems. For the validation of Monte Carlo codes for criticality computations against benchmark experiments, code accuracy and precision are measured by both the computational bias and uncertainty in the bias. The uncertainty in the bias accounts for known or quantified experimental, computational and model uncertainties. For the application of Monte Carlo codes for criticality analysis of fissionable material systems, an administrative margin of subcriticality must be imposed to provide additional assurance of subcriticality for any unknown or unquantified uncertainties. Because of a substantial impact of the administrative margin of subcriticality on economics and safety of nuclear fuel cycle operations, recently increasing interests in reducing the administrative margin of subcriticality make the uncertainty analysis in criticality safety computations more risk-significant. This paper provides an overview of two most popular k eff uncertainty analysis methods for Monte Carlo criticality computations: (1) sampling-based methods, and (2) analytical methods. Examples are given to demonstrate their usage in the k eff uncertainty analysis due to uncertainties in both neutronic and non-neutronic parameters of fissionable material systems.

  19. Pore-scale uncertainty quantification with multilevel Monte Carlo

    KAUST Repository

    Icardi, Matteo; Hoel, Haakon; Long, Quan; Tempone, Raul

    2014-01-01

    . Since there are no generic ways to parametrize the randomness in the porescale structures, Monte Carlo techniques are the most accessible to compute statistics. We propose a multilevel Monte Carlo (MLMC) technique to reduce the computational cost

  20. Prospect on general software of Monte Carlo method

    International Nuclear Information System (INIS)

    Pei Lucheng

    1992-01-01

    This is a short paper on the prospect of Monte Carlo general software. The content consists of cluster sampling method, zero variance technique, self-improved method, and vectorized Monte Carlo method

  1. Bayesian phylogeny analysis via stochastic approximation Monte Carlo

    KAUST Repository

    Cheon, Sooyoung; Liang, Faming

    2009-01-01

    in simulating from the posterior distribution of phylogenetic trees, rendering the inference ineffective. In this paper, we apply an advanced Monte Carlo algorithm, the stochastic approximation Monte Carlo algorithm, to Bayesian phylogeny analysis. Our method

  2. Applications of Monte Carlo method in Medical Physics

    International Nuclear Information System (INIS)

    Diez Rios, A.; Labajos, M.

    1989-01-01

    The basic ideas of Monte Carlo techniques are presented. Random numbers and their generation by congruential methods, which underlie Monte Carlo calculations are shown. Monte Carlo techniques to solve integrals are discussed. The evaluation of a simple monodimensional integral with a known answer, by means of two different Monte Carlo approaches are discussed. The basic principles to simualate on a computer photon histories reduce variance and the current applications in Medical Physics are commented. (Author)

  3. Monte Carlo computation in the applied research of nuclear technology

    International Nuclear Information System (INIS)

    Xu Shuyan; Liu Baojie; Li Qin

    2007-01-01

    This article briefly introduces Monte Carlo Methods and their properties. It narrates the Monte Carlo methods with emphasis in their applications to several domains of nuclear technology. Monte Carlo simulation methods and several commonly used computer software to implement them are also introduced. The proposed methods are demonstrated by a real example. (authors)

  4. Aplicación de tres índices bióticos en el río San Juan, Andes, Colombia (Application of three biotic indexes in the river San Juan, Andes, Colombia

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    Mailedt Paola Murillo Torrentes

    2016-09-01

    Full Text Available Durante los meses de febrero, mayo, agosto y octubre del año 2014, se evaluó la calidad del agua del río San Juan. Para tal fin se establecieron seis puntos de muestreo donde se recolectaron muestras de agua y macroinvertebrados acuáticos para los análisis fisicoquímicos e hidrobiológicos. Se aplicaron y modificaron los índices bióticos EPT (efemerópteros, plecópteros, tricópteros, BMWP/Col (Biological Monitoring Working Party y ASPT (Average Score per Taxon basados en las comunidades de macroinvertebrados acuáticos capturados. Los resultados de las variables fisicoquímicas y los índices bióticos indican que las estaciones E1 y E2 son las que presentan menor grado de contaminación, en las demás estaciones disminuye considerablemente la calidad del agua debido a las actividades económicas desarrolladas en el sector y a su cercanías con el casco urbano del municipio de Andes. De los tres índices analizados, el ASPT modificado y adaptado al río San Juan es el que mejor se relaciona con las condiciones ambientales del río en tanto las características de los macroinvertebrados acuáticos recolectados y analizados en el trayecto objeto de estudio. (Abstract. During the months of February, May, August and October 2014, the water quality of the San Juan River was assessed. To this aim, six sampling points were established, where water samples and macroinvertebrates for physical-chemical and hydrobiological analysis were collected. Three biotic indexes were applied and one modified: EPT (Ephemeroptera, Plecoptera, Trichoptera, BMWP / Col (Biological Monitoring Working Party and ASPT (Average Score per Taxon based on the captured communities of aquatic macroinvertebrates. The results of the physical-chemical variables and biotic indixes indicate that E1 and E2 stations are those with lower degree of contamination, other stations considerably decreased water quality due to economic activities around, and the short distance with the

  5. El uso de productos del reino mineral en la terapéutica del siglo XVI. El libro de los Medicamentos simples de Juan Fragoso (1581 y el Antidotario de Juan Calvo (1580

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    Fresquet Febrer, José Luis

    1999-06-01

    Full Text Available This work aims to approach us the use of "mineral products" in medicine during 16th and 17th centuries. To have an idea about the use of minerals in daily practice, we have studied Juan Fragoso's Libro de los medicamentos simples (1581, and Juan Calvo's Antidotario (1580. We have also checked the presence of these substances in Dioscorides Materia medica, version of Andres Laguna, and the Diccionario de Autoridades. In addition, but not exhaustively, we have followed the used of these products in medicine until the present. This work proves the medical application of about half a hundred of mineral products, the use of which, was coommon in metallurgy, in paintings and vernishes manufacture, in ceramics, in dying industry, etc. However, the physicians of those times, such as Fragoso and Calvo were careful when applying mineral substances due to their great toxicity.

    Este trabajo pretende acercamos al uso de lo que podemos designar como productos pertenecientes al reino mineral, en la medicina científica de los siglos XVI y XVII. Con el fin de hacemos una idea de lo que realmente se utilizaba en la práctica cotidiana, se han estudiado el Libro de los medicamentos simples de Juan Fragoso y el Antidotario de Juan Calvo. Tomando como base los fármacos que en ellos se describen y comentan, hemos comprobado su presencia en la versión de la Materia médica de Dioscórides, de Andrés Laguna, y hemos completado la información con las definiciones del Diccionario de Autoridades. Además de esto, aunque no de forma exhaustiva, hemos seguido el empleo de estas sustancias en medicina hasta la actualidad. El trabajo demuestra el empleo en terapéutica de más de medio centenar de este tipo de productos cuyo uso era habitual en metalurgia, en la fabricación de pinturas y barnices, en cerámica, en tintes, etc. Los médicos de entonces fueron bastante cautelosos al

  6. Liquefaction during the 1977 San Juan Province, Argentina earthquake (Ms = 7.4)

    Science.gov (United States)

    Youd, T.L.; Keefer, D.K.

    1994-01-01

    Liquefaction effects generated by the 1977 San Juan Province, Argentina, earthquake (Ms = 7.4) are described. The larger and more abundant effects were concentrated in the 60-km long band of the lowlands in the Valle del Bermejo and in an equally long band along the Rio San Juan in the Valle de Tulum. Fissures in the Valle del Bermejo were up to several hundred meters long and up to several meters wide. Sand deposits, from boils that erupted through the fissures, covered areas up to tens of square meters. Fissures generally parallelled nearby stream channels. Because the Valle del Bermejo is undeveloped, these large features caused no damage. Liquefaction in the Valle del Tulum caused important or unusual damage at several localities, including the following five sites: (1) At the Barrio Justo P. Castro, a subdivision of Caucete, liquefaction of subsurface sediments decoupled overlying, unliquefied stiff sediments, producing a form of ground failure called "ground oscillation". The associated differential ground movements pulled apart houses and pavements in extension, while shearing curbs and buckling canal linings in compression at the same locality. (2) At the Escuela Normal, in Caucete, the roof of a 30-m long single-story classroom building shifted westward relative to the foundation. That displacement fractured and tilted columns supporting the roof. The foundation was fractured at several places, leaving open cracks, as wide as 15 mm. The cumulative width of the open cracks was 48 mm, an amount roughly equivalent to the 63 mm of offset between the roof and foundation at the east end of the building. The ground and foundation beneath the building extended (or spread) laterally opening cracks and lengthening the foundation while the roof remained in place. (3) The most spectacular damage to structures at the community of San Martin was the tilting of a 6-m high water tower and the toppling of a nearby pump house into a 1-m deep crater. Similarly, a small

  7. Determinismo, analogia e preveggenza in Pierre Mabille. Basi per un raffronto con Juan Larrea

    Directory of Open Access Journals (Sweden)

    A. D’Urso

    2012-08-01

    Full Text Available ENThis text is a brief commentary on Pierre Mabille’s Del nuevo mundo, published in Mexico in 1943 and that we give here in our translation, which is perhaps absolutely the first in Italy concerning one of the writings of this important Surrealist, who is little studied by the French criticism even.Within the limits of the themes of this article and of the space granted here, we preferred to illustrate the implicit – and yet so evident – relations between Mabille’s thought and Dialectical Materialism, particularly by showing those passages of his text which seem to refer to some (even minor Marx and Engels’ works, rather than delay in a bio-bibliographical reconstruction and examine thoroughly the influence of materialist Monism, alchemical Hermetism and revolutionary Freemasonry on the “stylistic” construction of this brief essay.Around the themes of determinism, analogy and clairvoyance, Mabille’s original reading of fundamental thesis of Hegelian Dialectics and Marxist Materialism in their possible synthesis with the principles of cosmic Monism will be put in relief. This is an interpretation which permits to face such matters from inside a fully Surrealist point of view, rather than from outside it (and a little more metaphysically as Juan Larrea pretended to, thus allowing to put the basis for a possible comparison between him and his friend Mabille, who both never failed to influence each other.Keywords: Monism; Surrealism; Materialism; Engels; Marxism.ITQuesto testo è un breve commento dell’articolo Del nuevo mundo di Pierre Mabille, apparso in Messico nel 1943 e che qui forniamo nella nostra traduzione, probabilmente la prima in assoluto in Italia di uno scritto di quest’importante surrealista, poco studiato anche dalla critica francese.Nei limiti dello spazio disponibile e delle tematiche del testo in questione abbiamo preferito esporre le rela¬zioni implicite – eppure così evidenti – del pensiero di Mabille

  8. High and highly variable cooling rates during pyroclastic eruptions on Axial Seamount, Juan de Fuca Ridge

    Science.gov (United States)

    Helo, Christoph; Clague, David A.; Dingwell, Donald B.; Stix, John

    2013-03-01

    We present a calorimetric analysis of pyroclastic glasses and glassy sheet lava flow crusts collected on Axial Seamount, Juan de Fuca Ridge, NE Pacific Ocean, at a water depth of about 1400 m. The pyroclastic glasses, subdivided into thin limu o Pele fragments and angular, blocky clasts, were retrieved from various stratigraphic horizons of volcaniclastic deposits on the upper flanks of the volcanic edifice. Each analysed pyroclastic sample consists of a single type of fragment from one individual horizon. The heat capacity (cp) was measured via differential scanning calorimetry (DSC) and analysed using relaxation geospeedometry to obtain the natural cooling rate across the glass transition. The limu o Pele samples (1 mm grain size fraction) and angular fragments (0.5 mm grain size fraction) exhibit cooling rates of 104.3 to 106.0 K s- 1 and 103.9 to 105.1 K s- 1, respectively. A coarser grain size fraction, 2 mm for limu o Pele and 1 mm for the angular clasts yields cooling rates at the order of 103.7 K s- 1. The range of cooling rates determined for the different pyroclastic deposits presumably relates to the size or intensity of the individual eruptions. The outer glassy crusts of the sheet lava flows were naturally quenched at rates between 63 K s- 1 and 103 K s- 1. By comparing our results with published data on the very slow quenching of lava flow crusts, we suggest that (1) fragmentation and cooling appear to be coupled dynamically and (2) ductile deformation upon the onset of cooling is restricted due to the rapid increase in viscosity. Lastly, we suggest that thermally buoyant plumes that may arise from rapid heat transfer efficiently separate clasts based on their capability to rise within the plume and as they subsequently settle from it.

  9. Inter- and Intraspecific Variations of Bacterial Communities Associated with Marine Sponges from San Juan Island, Washington

    KAUST Repository

    Lee, O. O.

    2009-04-10

    This study attempted to assess whether conspecific or congeneric sponges around San Juan Island, Washington, harbor specific bacterial communities. We used a combination of culture-independent DNA fingerprinting techniques (terminal restriction fragment length polymorphism and denaturing gradient gel electrophoresis [DGGE]) and culture-dependent approaches. The results indicated that the bacterial communities in the water column consisted of more diverse bacterial ribotypes than and were drastically different from those associated with the sponges. High levels of similarity in sponge-associated bacterial communities were found only in Myxilla incrustans and Haliclona rufescens, while the bacterial communities in Halichondria panicea varied substantially among sites. Certain terminal restriction fragments or DGGE bands were consistently obtained for different individuals of M. incrustans and H. rufescens collected from different sites, suggesting that there are stable or even specific associations of certain bacteria in these two sponges. However, no specific bacterial associations were found for H. panicea or for any one sponge genus. Sequencing of nine DGGE bands resulted in recovery of seven sequences that best matched the sequences of uncultured Proteobacteria. Three of these sequences fell into the sponge-specific sequence clusters previously suggested. An uncultured alphaproteobacterium and a culturable Bacillus sp. were found exclusively in all M. incrustans sponges, while an uncultured gammaproteobacterium was unique to H. rufescens. In contrast, the cultivation approach indicated that sponges contained a large proportion of Firmicutes, especially Bacillus, and revealed large variations in the culturable bacterial communities associated with congeneric and conspecific sponges. This study revealed sponge species-specific but not genus- or site-specific associations between sponges and bacterial communities and emphasized the importance of using a combination

  10. Effect of seasonal variations and collection form on antioxidant activity of propolis from San Juan, Argentina.

    Science.gov (United States)

    Isla, María I; Zampini, Iris C; Ordóñez, Roxana M; Cuello, Soledad; Juárez, Belén Carrasco; Sayago, Jorge Esteban; Moreno, María I Nieva; Alberto, María Rosa; Vera, Nancy R; Bedascarrasbure, Enrique; Alvarez, Alejandro; Cioccini, Fabián; Maldonado, Luis M

    2009-12-01

    Propolis was included in the Argentine Food Code as a functional food. The chemical parameters and antioxidant properties of propolis samples from the same colonies of Apis mellifera in San Juan (Cuyo region, Western Argentine) were compared every month for 1 year using two collection methods. Chemical parameters were analyzed by the spectrophotometric method and fingerprinting using high-performance liquid chromatography with ultraviolet detection. The antioxidant activities of propolis samples were measured using model systems including the analysis of the scavenging activities for 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and the beta-carotene bleaching assay. The results showed that propolis had a higher free radical scavenging and lipid peroxidation inhibitory capacity than butylated hydroxytoluene and quercetin, antioxidants used in the pharmaceutical and food industries. The concentration required to scavenge 50% of free radicals (SC(50)) values differed depending on the sample collection month. Samples collected in November had the highest antioxidant capacity. In all cases, SC(50) values of propolis samples obtained by scraping were similar to those collected from a wire mesh (5 microg/mL for ABTS and 20-30 microg/mL for DPPH radicals). A significant positive correlation was found between the antioxidant capacity and flavonoid content of each analyzed extract. The chemical profiles were very similar. Galangin (3,5,7-trihydroxyflavone), an antioxidant compound, was detected in all samples as a major compound. The chromatographic profile suggests that of Baccharis sp., which would be one of the botanical sources of propolis from western Argentina, and the content of galangin can be used as a parameter for evaluating propolis quality. Our results suggest that Argentine propolis from Cuyo is a promising source of bioactive compounds as ingredients for developing functional foods with a

  11. La ética y el problema de Dios en Juan Luis Vives (1492-1540

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    Alfonso Maestre Sánchez

    2003-01-01

    Full Text Available In the historical, turbulent and exciting times of the Renaissance Humanism, characterized by a return to classic Antiquity, and the renovation of all cultural manifestations, both philosophy and religion are affected from their very foundations. This scholastic crisis affects in such a way the conscience, of the individuals and the people that it demands a solution immediate although provisional solution, so that we continuing even the business of living. No wonder that among the ruins of tomist morality, some moralists arise, as that of Justus Lipsius (1547-1606, engased in renovating the stoic doctrines of Epicteto (ca. 50 to. of C. -125/138 and Séneca (ca. 4-65, and that of Pierre Gassendi (1592-1655, determined to Christianize Epicuro. For some could be a summarise of the Ethics of the Renaissance others believe that the first Ethics of modern philosophy should be considered to be a product of the Renaissance, even if it does not belong chronologically to it they meam Descartes (1596-1650, Spinoza (1632-1677 and Kant (1724-1804. However according to the opinion of some significant authors, we dont need to go back to Kant to find the authentic Ethics of the Renaissance. Juan Luis Vives published in 1524 a small booklet titled Introductio ad Sapientiam that for its internal ideological structure and its origin senequista and christan leaning occupies a privileged place within modern Ethic, and if we take accourt his content and chronology it can be considered as the Ethics of the Renaissance, at least of the Spanish Renaissance.

  12. Tourism and climate conditions in San Juan, Puerto Rico, 2000-2010

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    Pablo A. Méndez-Lázaro

    2014-06-01

    Full Text Available The general behavior of the tourism sector in Puerto Rico, with its marked seasonality, hints at a close relationship between tourism activities and climate conditions. Even if weather condition is only one of many variables considered by travelling tourists, climate conditions weigh heavily in the majority of the decisions. The effect of climate variability on the environment could be manifested in warmer temperature, heat waves, and changes in the frequency of extreme weather events, such as severe storms and hurricanes, floods, and sea level rise. These conditions affect different sectors of society, among them public health and the economy. Therefore, our research has two main objectives: to establish a tourism climate index (TCI for Puerto Rico and to analyze if occupancy rates in hotels correspond to local weather conditions. Even though there are many other variables that could have positive or negative effects on tourism activities, results showed a significant association between occupancy rate in Puerto Rico and climate indexes. According to both TCI and the mean historical climate for tourism indexes, the most favorable months for tourism in Puerto Rico were February and March (winter, whereas the worst season was the end of August and the beginning of September (summer-fall. Although winter represents dry conditions and lower temperatures in San Juan, it also represents the highest occupancy rate during the years examined. In summer and fall, data showed high occupancy rates, yet climate conditions were not suitable; these months also correspond to the hurricane season. During this season, high relative occupancy rates responded to internal and local tourism patterns. It can therefore be assumed that until the climate-tourism relationship is well characterized, there is little hope of fully understanding the potential economic effects, detrimental or beneficial, of global climate change, not only on tourism in Puerto Rico, but on

  13. Microbiological characterization of post-eruption "snowblower" vents at Axial Seamount, Juan de Fuca Ridge

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    Julie L Meyer

    2013-06-01

    Full Text Available Microbial processes within the subseafloor can be examined during the ephemeral and uncommonly observed phenomena known as snowblower venting. Snowblowers are characterized by the large quantity of white floc that is expelled from the seafloor following mid-ocean ridge eruptions. During these eruptions, rapidly cooling lava entrains seawater and hydrothermal fluids enriched in geochemical reactants, creating a natural bioreactor that supports a subseafloor microbial bloom. Previous studies hypothesized that the eruption-associated floc is made by sulfide-oxidizing bacteria; however, the microbes involved were never identified. Here we present the first molecular analysis combined with microscopy of microbial communities in snowblower vents from samples collected shortly after the 2011 eruption at Axial Seamount, an active volcano on the Juan de Fuca Ridge. We obtained fluid samples and white flocculent material from active snowblower vents as well as orange flocculent material found on top of newly formed lava flows. Both flocculent types revealed diverse cell types and particulates when examined by phase contrast and scanning electron microscopy. Distinct archaeal and bacterial communities were detected in each sample type through Illumina tag sequencing of 16S rRNA genes and through sequencing of the sulfide oxidation gene, soxB. In fluids and white floc, the dominant bacteria were sulfur-oxidizing Epsilonproteobacteria and the dominant archaea were thermophilic Methanococcales. In contrast, the dominant organisms in the orange floc were Gammaproteobacteria and Thaumarchaeota Marine Group I. In all samples, bacteria greatly outnumbered archaea. The presence of anaerobic methanogens and microaerobic Epsilonproteobacteria in snowblower communities provides evidence that these blooms are seeded by subseafloor microbes, rather than from microbes in bottom seawater. These eruptive events thus provide a unique opportunity to observe subseafloor

  14. Hydrothermal fluid composition at Middle Valley, Northern Juan de Fuca Ridge: Temporal and spatial variability

    Science.gov (United States)

    Cruse, Anna M.; Seewald, Jeffrey S.; Saccocia, Peter J.; Zierenberg, Robert

    Hydrothermal fluids were collected in July 2000 from the Dead Dog and Ore Drilling Program (ODP) Mound vent fields at Middle Valley, a sediment-covered spreading center on the northern Juan de Fuca Ridge. Measured fluid temperatures varied from 187° to 281°C in focused flow vents and 40°C in ODP Hole 1035F. Cl concentrations indicate that ODP Mound fluids undergo phase separation in the subsurface, whereas Dead Dog fluids do not. The lack of phase separation at Dead Dog is consistent with other geochemical indicators of lower subsurface temperatures. Cooling and equilibration with quartz after phase separation at the ODP Mound results in exit temperatures and silica concentrations that are indistinguishable from those at Dead Dog. The sulfur isotopic composition of aqueous ΣH2S indicates extensive reduction of seawater SO4 and leaching of basaltic sulfur at both areas. A new area of venting, which resulted from drilling operations during ODP Leg 169, was discovered on the eastern side of the ODP Mound. The fluids in the new area have compositions that are similar to those of Hole 1035H and Shiner Bock, except for lower H2 and higher H2S concentrations. These differences reflect the conversion of pyrite to pyrrhotite in the ODP Mound as fluids react with sulfide minerals during upflow. Fluid temperatures and compositions have remained constant between 1990 and 2000 indicating that subsurface reaction zone conditions did not change over this period. Near constant concentrations of sediment-derived mobile trace elements suggest that the residence time of fluids in a high-temperature reservoir exceeds 10 years.

  15. Temperature and redox effect on mineral colonization in Juan de Fuca Ridge flank subsurface crustal fluids

    Directory of Open Access Journals (Sweden)

    Jean-Paul eBaquiran

    2016-03-01

    Full Text Available To examine microbe-mineral interactions in subsurface oceanic crust, we evaluated microbial colonization on crustal minerals that were incubated in borehole fluids for one year at the seafloor wellhead of a crustal borehole observatory (IODP Hole U1301A, Juan de Fuca Ridge flank as compared to an experiment that was not exposed to subsurface crustal fluids (at nearby IODP Hole U1301B. In comparison to previous studies at these same sites, this approach allowed assessment of the effects of temperature, fluid chemistry, and/or mineralogy on colonization patterns of different mineral substrates, and an opportunity to verify the approach of deploying colonization experiments at an observatory wellhead at the seafloor instead of within the borehole. The Hole U1301B deployment did not have biofilm growth, based on microscopy and DNA extraction, thereby confirming the integrity of the colonization design against bottom seawater intrusion. In contrast, the Hole U1301A deployment supported biofilms dominated by Epsilonproteobacteria (43.5% of 370 16S rRNA gene clone sequences and Gammaproteobacteria (29.3%. Sequence analysis revealed overlap in microbial communities between different minerals incubated at the Hole U1301A wellhead, indicating that mineralogy did not separate biofilm structure within the one-year colonization experiment. Differences in the Hole U1301A wellhead biofilm community composition relative to previous studies from within the borehole using similar mineral substrates suggest that temperature and the diffusion of dissolved oxygen through plastic components influenced the mineral colonization experiments positioned at the wellhead. This highlights the capacity of low abundance crustal fluid taxa to rapidly establish communities on diverse mineral substrates under changing environmental conditions such as from temperature and oxygen.

  16. Helium as a tracer for fluids released from Juan de Fuca lithosphere beneath the Cascadia forearc

    Science.gov (United States)

    McCrory, Patricia A.; Constantz, James E.; Hunt, Andrew G.; Blair, James Luke

    2016-01-01

    The ratio between helium isotopes (3He/4He) provides an excellent geochemical tracer for investigating the sources of fluids sampled at the Earth's surface. 3He/4He values observed in 25 mineral springs and wells above the Cascadia forearc document a significant component of mantle-derived helium above Juan de Fuca lithosphere, as well as variability in 3He enrichment across the forearc. Sample sites arcward of the forearc mantle corner (FMC) generally yield significantly higher ratios (1.2-4.0 RA) than those seaward of the corner (0.03-0.7 RA). The highest ratios in the Cascadia forearc coincide with slab depths (40-45 km) where metamorphic dehydration of young oceanic lithosphere is expected to release significant fluid and where tectonic tremor occurs, whereas little fluid is expected to be released from the slab depths (25-30 km) beneath sites seaward of the corner.Tremor (considered a marker for high fluid pressure) and high RA values in the forearc are spatially correlated. The Cascadia tremor band is centered on its FMC, and we tentatively postulate that hydrated forearc mantle beneath Cascadia deflects a significant portion of slab-derived fluids updip along the subduction interface, to vent in the vicinity of its corner. Furthermore, high RA values within the tremor band just arcward of the FMC, suggest that the innermost mantle wedge is relatively permeable.Conceptual models require: (1) a deep fluid source as a medium to transport primordial 3He; (2) conduits through the lithosphere which serve to speed fluid ascent to the surface before significant dilution from radiogenic 4He can occur; and (3) near lithostatic fluid pressure to keep conduits open. Our spatial correlation between high RA values and tectonic tremor provides independent evidence that tremor is associated with deep fluids, and it further suggests that high pore pressures associated with tremor may serve to keep fractures open for 3He migration through ductile upper mantle and lower crust.

  17. Un ministro para la Defensa de la República desde el exilio : Juan Hernández Saravia

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    Manuela Aroca Mohedano

    2004-01-01

    Full Text Available La nueva situación internacionai surgida tras el final de la II Guerra Mundial propició la recuperación de las instituciones republicanas españolas en el exilio. Juan Hernández Saravia, un militar profesional, azañista y republicano, será el ministro de la Defensa Nacional de la República Española. Entre posibilidades reales y utopías, a caballo entre la defensa a ultranza de la legalidad y la protección de los movimientos clandestinos antifranquistas, en medio de las disensiones de los militares exiliados dispersos en varios continentes, discurrirá la actuación de un Ministerio que tendrá como objetivo principal la recuperación del ejército para la futura restaurada República y que verá truncadas sus expectativas por la aparición en el panorama mundial de los primeros.A Minister in exile for tfie Republic Defence: Juan Hernández Saravia The new International situation arisen after the end of the Second World War led to the recovery of Spanish Republic Institutions in exile. Juan Hernández Saravia, an army officer, republican and adherent to Azaña, became the National Defence Minister of Spanish Republic. Among real possibilities and utopia, halfway between a vigorous legality defence and the protection of clandestino movements against Franco's dictatorship, the main objective of this Ministery was the army recovery for the futuro restoring Republic, but the early Cold War shattered these prospects.

  18. Diseño de indicadores urbanos de sustentabilidad. El caso del Gran San Juan en Argentina.

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    Nora Elsa Nacif

    2016-11-01

    Full Text Available Este trabajo surge de un proyecto de investigación en curso, cuya finalidad principal es contribuir al desarrollo urbano sustentable de la ciudad de Gran San Juan, entendiendo por tal, al desarrollo que considera como ejes del mismo a la equidad social, la eficiencia económica y la preservación del ambiente, a través del estudio de un cuerpo de indicadores urbanos como herramientas de monitoreo permanente y dinámico. La consideración de la sustentabilidad en Gran San Juan, es un imperativo ineludible por su carácter de “ciudad oasis de zona sísmica”, lo que implica preservar su condición de ciudad intermedia. En este marco, se sigue un esquema metodológico que ordena el trabajo en etapas generales de exploración de antecedentes e información obtenida como trabajo de campo, procesamiento y georeferenciación de resultados, para posteriormente formular lineamientos a ser considerados en planes de ordenamiento territorial. Hasta el momento los resultados obtenidos dentro de la línea investigativa, incluyen el desarrollo de un sistema de indicadores estructurado y articulado en base a tres subsistemas que se corresponden con los aspectos: Físico espacial, Socio cultural y Ambiental, que contienen a los diversos indicadores de sustentabilidad. Además de la aplicación de los indicadores del subsistema físico espacial para evaluar algunos sectores urbanos del Gran San Juan, considerados “críticos”. 

  19. Geology and metallogeny of the volcanic complex of Rio Blanco Ullum. Province of San Juan. Republica Argentina

    International Nuclear Information System (INIS)

    Mendoza, N.; Weidmann, N.; Puigdomenech, H.; Weidmann, R.

    2007-01-01

    Preliminary results of a research carried out at the Complejo Rio Blanco de Ullum, San Juan. Argentina are summarized in the present paper. These studies are focused on geological and metallogenic features o f this unit. The study area is located 20 km. WNW of San Juan city with geographic coordinates of 31grades 30' South latitude and 68 grades 52' West longitude. The older rocks aotcroping in the area correspond to limestones of Ordovician San Juan Formation, the chronologic succession continues with sales and siltstones of Silurian Tambolar Formation, pelites and subgraywackes of Devonian Punta Negra Formation and finally a 1500 m thick package of piroclastics and sediments of Albarracin Formation of Tertiary age. Albarracin Formation is composed pf a Basal Member (sandstones and stilstones), a Tuffaceous Member (tuffs, tuffites and oligomictic breccia s with conglomerate interbed dings in the upper part) and a Conglomeratic Member (polimictic para conglomerates). According to piroclastics facies, relationships and spreading area of piroclastics deposits a c olapsed dome and avalanche model is proposed to be the main process for the piroclastics package outcropping in the area.Sedimentary and piroclastics rocks are intruded by five sub volcanic units as noted by Leveratto (1968) which are composed by different lithologies such as: Altered Da cite - Rhyolite, Ullum Da cite, Cerro Blanco de Zonda Andesite, Ullum Andesite and Hybrid Andesite.Detailed work on alteration assemblages and metallogenic features in the southwestern sector of the Complejo resulted in the identification of three alteration zones with characteric features of potassic, argillic and propyllitic signature. (author)

  20. Towards a Poetry of Silence: Stéphane Mallarmé and Juan Ramón Jiménez

    Directory of Open Access Journals (Sweden)

    Mervyn Coke-Enguídanos

    1983-01-01

    Full Text Available In an era of apparent dissolution, "la Obra" of Juan Ramón Jiménez, like "l'Oeuvre" of Stéphane Mallarmé, has for its goal the attainment of timelessness. In both poets, the concept of absolute Time—the timelessness of eternal Time—is yoked with the ideal of silence. But this is no ordinary silence, and certainly not the kind that results from inadequacy of expression. It is the silence of perfection, the expression of the ineffable: pure Poetry. Since the poetic language is the silent language of thought, both Mallarmé and Juan Ramón seek to convey the pure idea. In so doing, both must stringently eliminate whatever is not essential in their poetry. The astonishing paradox, central to Mallarmé and Juan Ramón alike, is the urge to create an "unwritten" poetry.

  1. Explotación de peces asociada a la pesquería artesanal de langosta de Juan Fernández (Jasus frontalis

    Directory of Open Access Journals (Sweden)

    Mauricio Ahumada

    2014-03-01

    Full Text Available Para contribuir al conocimiento de la explotación de peces asociada a la pesquería de langosta de Juan Fernández, se monitorearon 157 salidas de pesca durante la temporada 2010-2011. Se capturaron 10.462 ejemplares correspondientes a 19 especies de peces, tres de las cuales concentraron el 94% de la captura en número: jurel de Juan Fernández (Pseudocaranx chilensis (45%, breca (Nemadactylus gayi (41% y anguila morena (Gymnothoraxporphyreus (8%. Las capturas totales estimadas fueron 40, 24 y 13 ton de breca, jurel de Juan Fernández y anguila morena, respectivamente. El 97% de los ejemplares de peces capturados fueron utilizados como carnada de peces o langosta.

  2. Marques de l’affectivité dans le discours séducteur du Dom Juan de Molière

    Directory of Open Access Journals (Sweden)

    Diana-Adriana Lefter

    2007-05-01

    Full Text Available Notre travail prend en discussion l’un des plus célèbres libertins de l’histoire littéraire, Don Juan, tel qu’il est repris dans la pièce de Molière. Plus précisément, nous nous proposons d’étudier le discours de séduction de Don Juan dans les différentes hypostases dans lesquelles il apparaît. Nous voulons mettre en parallèle le discours de Don Juan devant Done Elvire, et celui devant la paysanne Charlotte, pour mettre en évidence deux aspects: la composante affective, c’est-à-dire l’insertion du moi dans le discours, et la composante séductrice, notamment le rapport entre le moi-séducteur et l’objet de la séduction.

  3. Monte Carlo-based tail exponent estimator

    Science.gov (United States)

    Barunik, Jozef; Vacha, Lukas

    2010-11-01

    In this paper we propose a new approach to estimation of the tail exponent in financial stock markets. We begin the study with the finite sample behavior of the Hill estimator under α-stable distributions. Using large Monte Carlo simulations, we show that the Hill estimator overestimates the true tail exponent and can hardly be used on samples with small length. Utilizing our results, we introduce a Monte Carlo-based method of estimation for the tail exponent. Our proposed method is not sensitive to the choice of tail size and works well also on small data samples. The new estimator also gives unbiased results with symmetrical confidence intervals. Finally, we demonstrate the power of our estimator on the international world stock market indices. On the two separate periods of 2002-2005 and 2006-2009, we estimate the tail exponent.

  4. No-compromise reptation quantum Monte Carlo

    International Nuclear Information System (INIS)

    Yuen, W K; Farrar, Thomas J; Rothstein, Stuart M

    2007-01-01

    Since its publication, the reptation quantum Monte Carlo algorithm of Baroni and Moroni (1999 Phys. Rev. Lett. 82 4745) has been applied to several important problems in physics, but its mathematical foundations are not well understood. We show that their algorithm is not of typical Metropolis-Hastings type, and we specify conditions required for the generated Markov chain to be stationary and to converge to the intended distribution. The time-step bias may add up, and in many applications it is only the middle of a reptile that is the most important. Therefore, we propose an alternative, 'no-compromise reptation quantum Monte Carlo' to stabilize the middle of the reptile. (fast track communication)

  5. Multilevel Monte Carlo Approaches for Numerical Homogenization

    KAUST Repository

    Efendiev, Yalchin R.

    2015-10-01

    In this article, we study the application of multilevel Monte Carlo (MLMC) approaches to numerical random homogenization. Our objective is to compute the expectation of some functionals of the homogenized coefficients, or of the homogenized solutions. This is accomplished within MLMC by considering different sizes of representative volumes (RVEs). Many inexpensive computations with the smallest RVE size are combined with fewer expensive computations performed on larger RVEs. Likewise, when it comes to homogenized solutions, different levels of coarse-grid meshes are used to solve the homogenized equation. We show that, by carefully selecting the number of realizations at each level, we can achieve a speed-up in the computations in comparison to a standard Monte Carlo method. Numerical results are presented for both one-dimensional and two-dimensional test-cases that illustrate the efficiency of the approach.

  6. Status of Monte Carlo at Los Alamos

    International Nuclear Information System (INIS)

    Thompson, W.L.; Cashwell, E.D.

    1980-01-01

    At Los Alamos the early work of Fermi, von Neumann, and Ulam has been developed and supplemented by many followers, notably Cashwell and Everett, and the main product today is the continuous-energy, general-purpose, generalized-geometry, time-dependent, coupled neutron-photon transport code called MCNP. The Los Alamos Monte Carlo research and development effort is concentrated in Group X-6. MCNP treats an arbitrary three-dimensional configuration of arbitrary materials in geometric cells bounded by first- and second-degree surfaces and some fourth-degree surfaces (elliptical tori). Monte Carlo has evolved into perhaps the main method for radiation transport calculations at Los Alamos. MCNP is used in every technical division at the Laboratory by over 130 users about 600 times a month accounting for nearly 200 hours of CDC-7600 time

  7. Monte Carlo simulations in skin radiotherapy

    International Nuclear Information System (INIS)

    Sarvari, A.; Jeraj, R.; Kron, T.

    2000-01-01

    The primary goal of this work was to develop a procedure for calculation the appropriate filter shape for a brachytherapy applicator used for skin radiotherapy. In the applicator a radioactive source is positioned close to the skin. Without a filter, the resultant dose distribution would be highly nonuniform.High uniformity is usually required however. This can be achieved using an appropriately shaped filter, which flattens the dose profile. Because of the complexity of the transport and geometry, Monte Carlo simulations had to be used. An 192 Ir high dose rate photon source was used. All necessary transport parameters were simulated with the MCNP4B Monte Carlo code. A highly efficient iterative procedure was developed, which enabled calculation of the optimal filter shape in only few iterations. The initially non-uniform dose distributions became uniform within a percent when applying the filter calculated by this procedure. (author)

  8. Coevolution Based Adaptive Monte Carlo Localization (CEAMCL

    Directory of Open Access Journals (Sweden)

    Luo Ronghua

    2008-11-01

    Full Text Available An adaptive Monte Carlo localization algorithm based on coevolution mechanism of ecological species is proposed. Samples are clustered into species, each of which represents a hypothesis of the robot's pose. Since the coevolution between the species ensures that the multiple distinct hypotheses can be tracked stably, the problem of premature convergence when using MCL in highly symmetric environments can be solved. And the sample size can be adjusted adaptively over time according to the uncertainty of the robot's pose by using the population growth model. In addition, by using the crossover and mutation operators in evolutionary computation, intra-species evolution can drive the samples move towards the regions where the desired posterior density is large. So a small size of samples can represent the desired density well enough to make precise localization. The new algorithm is termed coevolution based adaptive Monte Carlo localization (CEAMCL. Experiments have been carried out to prove the efficiency of the new localization algorithm.

  9. Multilevel sequential Monte-Carlo samplers

    KAUST Repository

    Jasra, Ajay

    2016-01-01

    Multilevel Monte-Carlo methods provide a powerful computational technique for reducing the computational cost of estimating expectations for a given computational effort. They are particularly relevant for computational problems when approximate distributions are determined via a resolution parameter h, with h=0 giving the theoretical exact distribution (e.g. SDEs or inverse problems with PDEs). The method provides a benefit by coupling samples from successive resolutions, and estimating differences of successive expectations. We develop a methodology that brings Sequential Monte-Carlo (SMC) algorithms within the framework of the Multilevel idea, as SMC provides a natural set-up for coupling samples over different resolutions. We prove that the new algorithm indeed preserves the benefits of the multilevel principle, even if samples at all resolutions are now correlated.

  10. Monte Carlo simulation of gas Cerenkov detectors

    International Nuclear Information System (INIS)

    Mack, J.M.; Jain, M.; Jordan, T.M.

    1984-01-01

    Theoretical study of selected gamma-ray and electron diagnostic necessitates coupling Cerenkov radiation to electron/photon cascades. A Cerenkov production model and its incorporation into a general geometry Monte Carlo coupled electron/photon transport code is discussed. A special optical photon ray-trace is implemented using bulk optical properties assigned to each Monte Carlo zone. Good agreement exists between experimental and calculated Cerenkov data in the case of a carbon-dioxide gas Cerenkov detector experiment. Cerenkov production and threshold data are presented for a typical carbon-dioxide gas detector that converts a 16.7 MeV photon source to Cerenkov light, which is collected by optics and detected by a photomultiplier

  11. EU Commissioner Carlos Moedas visits SESAME

    CERN Multimedia

    CERN Bulletin

    2015-01-01

    The European Commissioner for research, science and innovation, Carlos Moedas, visited the SESAME laboratory in Jordan on Monday 13 April. When it begins operation in 2016, SESAME, a synchrotron light source, will be the Middle East’s first major international science centre, carrying out experiments ranging from the physical sciences to environmental science and archaeology.   CERN Director-General Rolf Heuer (left) and European Commissioner Carlos Moedas with the model SESAME magnet. © European Union, 2015.   Commissioner Moedas was accompanied by a European Commission delegation led by Robert-Jan Smits, Director-General of DG Research and Innovation, as well as Rolf Heuer, CERN Director-General, Jean-Pierre Koutchouk, coordinator of the CERN-EC Support for SESAME Magnets (CESSAMag) project and Princess Sumaya bint El Hassan of Jordan, a leading advocate of science in the region. They toured the SESAME facility together with SESAME Director, Khaled Tou...

  12. Hypothesis testing of scientific Monte Carlo calculations

    Science.gov (United States)

    Wallerberger, Markus; Gull, Emanuel

    2017-11-01

    The steadily increasing size of scientific Monte Carlo simulations and the desire for robust, correct, and reproducible results necessitates rigorous testing procedures for scientific simulations in order to detect numerical problems and programming bugs. However, the testing paradigms developed for deterministic algorithms have proven to be ill suited for stochastic algorithms. In this paper we demonstrate explicitly how the technique of statistical hypothesis testing, which is in wide use in other fields of science, can be used to devise automatic and reliable tests for Monte Carlo methods, and we show that these tests are able to detect some of the common problems encountered in stochastic scientific simulations. We argue that hypothesis testing should become part of the standard testing toolkit for scientific simulations.

  13. Multilevel sequential Monte-Carlo samplers

    KAUST Repository

    Jasra, Ajay

    2016-01-05

    Multilevel Monte-Carlo methods provide a powerful computational technique for reducing the computational cost of estimating expectations for a given computational effort. They are particularly relevant for computational problems when approximate distributions are determined via a resolution parameter h, with h=0 giving the theoretical exact distribution (e.g. SDEs or inverse problems with PDEs). The method provides a benefit by coupling samples from successive resolutions, and estimating differences of successive expectations. We develop a methodology that brings Sequential Monte-Carlo (SMC) algorithms within the framework of the Multilevel idea, as SMC provides a natural set-up for coupling samples over different resolutions. We prove that the new algorithm indeed preserves the benefits of the multilevel principle, even if samples at all resolutions are now correlated.

  14. Monte Carlo Simulation for Particle Detectors

    CERN Document Server

    Pia, Maria Grazia

    2012-01-01

    Monte Carlo simulation is an essential component of experimental particle physics in all the phases of its life-cycle: the investigation of the physics reach of detector concepts, the design of facilities and detectors, the development and optimization of data reconstruction software, the data analysis for the production of physics results. This note briefly outlines some research topics related to Monte Carlo simulation, that are relevant to future experimental perspectives in particle physics. The focus is on physics aspects: conceptual progress beyond current particle transport schemes, the incorporation of materials science knowledge relevant to novel detection technologies, functionality to model radiation damage, the capability for multi-scale simulation, quantitative validation and uncertainty quantification to determine the predictive power of simulation. The R&D on simulation for future detectors would profit from cooperation within various components of the particle physics community, and synerg...

  15. Status of Monte Carlo at Los Alamos

    International Nuclear Information System (INIS)

    Thompson, W.L.; Cashwell, E.D.; Godfrey, T.N.K.; Schrandt, R.G.; Deutsch, O.L.; Booth, T.E.

    1980-05-01

    Four papers were presented by Group X-6 on April 22, 1980, at the Oak Ridge Radiation Shielding Information Center (RSIC) Seminar-Workshop on Theory and Applications of Monte Carlo Methods. These papers are combined into one report for convenience and because they are related to each other. The first paper (by Thompson and Cashwell) is a general survey about X-6 and MCNP and is an introduction to the other three papers. It can also serve as a resume of X-6. The second paper (by Godfrey) explains some of the details of geometry specification in MCNP. The third paper (by Cashwell and Schrandt) illustrates calculating flux at a point with MCNP; in particular, the once-more-collided flux estimator is demonstrated. Finally, the fourth paper (by Thompson, Deutsch, and Booth) is a tutorial on some variance-reduction techniques. It should be required for a fledging Monte Carlo practitioner

  16. Topological zero modes in Monte Carlo simulations

    International Nuclear Information System (INIS)

    Dilger, H.

    1994-08-01

    We present an improvement of global Metropolis updating steps, the instanton hits, used in a hybrid Monte Carlo simulation of the two-flavor Schwinger model with staggered fermions. These hits are designed to change the topological sector of the gauge field. In order to match these hits to an unquenched simulation with pseudofermions, the approximate zero mode structure of the lattice Dirac operator has to be considered explicitly. (orig.)

  17. Handbook of Markov chain Monte Carlo

    CERN Document Server

    Brooks, Steve

    2011-01-01

    ""Handbook of Markov Chain Monte Carlo"" brings together the major advances that have occurred in recent years while incorporating enough introductory material for new users of MCMC. Along with thorough coverage of the theoretical foundations and algorithmic and computational methodology, this comprehensive handbook includes substantial realistic case studies from a variety of disciplines. These case studies demonstrate the application of MCMC methods and serve as a series of templates for the construction, implementation, and choice of MCMC methodology.

  18. The lund Monte Carlo for jet fragmentation

    International Nuclear Information System (INIS)

    Sjoestrand, T.

    1982-03-01

    We present a Monte Carlo program based on the Lund model for jet fragmentation. Quark, gluon, diquark and hadron jets are considered. Special emphasis is put on the fragmentation of colour singlet jet systems, for which energy, momentum and flavour are conserved explicitly. The model for decays of unstable particles, in particular the weak decay of heavy hadrons, is described. The central part of the paper is a detailed description on how to use the FORTRAN 77 program. (Author)

  19. Monte Carlo methods for preference learning

    DEFF Research Database (Denmark)

    Viappiani, P.

    2012-01-01

    Utility elicitation is an important component of many applications, such as decision support systems and recommender systems. Such systems query the users about their preferences and give recommendations based on the system’s belief about the utility function. Critical to these applications is th...... is the acquisition of prior distribution about the utility parameters and the possibility of real time Bayesian inference. In this paper we consider Monte Carlo methods for these problems....

  20. Monte Carlo methods for shield design calculations

    International Nuclear Information System (INIS)

    Grimstone, M.J.

    1974-01-01

    A suite of Monte Carlo codes is being developed for use on a routine basis in commercial reactor shield design. The methods adopted for this purpose include the modular construction of codes, simplified geometries, automatic variance reduction techniques, continuous energy treatment of cross section data, and albedo methods for streaming. Descriptions are given of the implementation of these methods and of their use in practical calculations. 26 references. (U.S.)

  1. General purpose code for Monte Carlo simulations

    International Nuclear Information System (INIS)

    Wilcke, W.W.

    1983-01-01

    A general-purpose computer called MONTHY has been written to perform Monte Carlo simulations of physical systems. To achieve a high degree of flexibility the code is organized like a general purpose computer, operating on a vector describing the time dependent state of the system under simulation. The instruction set of the computer is defined by the user and is therefore adaptable to the particular problem studied. The organization of MONTHY allows iterative and conditional execution of operations

  2. Autocorrelations in hybrid Monte Carlo simulations

    International Nuclear Information System (INIS)

    Schaefer, Stefan; Virotta, Francesco

    2010-11-01

    Simulations of QCD suffer from severe critical slowing down towards the continuum limit. This problem is known to be prominent in the topological charge, however, all observables are affected to various degree by these slow modes in the Monte Carlo evolution. We investigate the slowing down in high statistics simulations and propose a new error analysis method, which gives a realistic estimate of the contribution of the slow modes to the errors. (orig.)

  3. Introduction to the Monte Carlo methods

    International Nuclear Information System (INIS)

    Uzhinskij, V.V.

    1993-01-01

    Codes illustrating the use of Monte Carlo methods in high energy physics such as the inverse transformation method, the ejection method, the particle propagation through the nucleus, the particle interaction with the nucleus, etc. are presented. A set of useful algorithms of random number generators is given (the binomial distribution, the Poisson distribution, β-distribution, γ-distribution and normal distribution). 5 figs., 1 tab

  4. Sequential Monte Carlo with Highly Informative Observations

    OpenAIRE

    Del Moral, Pierre; Murray, Lawrence M.

    2014-01-01

    We propose sequential Monte Carlo (SMC) methods for sampling the posterior distribution of state-space models under highly informative observation regimes, a situation in which standard SMC methods can perform poorly. A special case is simulating bridges between given initial and final values. The basic idea is to introduce a schedule of intermediate weighting and resampling times between observation times, which guide particles towards the final state. This can always be done for continuous-...

  5. Monte Carlo codes use in neutron therapy

    International Nuclear Information System (INIS)

    Paquis, P.; Mokhtari, F.; Karamanoukian, D.; Pignol, J.P.; Cuendet, P.; Iborra, N.

    1998-01-01

    Monte Carlo calculation codes allow to study accurately all the parameters relevant to radiation effects, like the dose deposition or the type of microscopic interactions, through one by one particle transport simulation. These features are very useful for neutron irradiations, from device development up to dosimetry. This paper illustrates some applications of these codes in Neutron Capture Therapy and Neutron Capture Enhancement of fast neutrons irradiations. (authors)

  6. Quantum Monte Carlo calculations of light nuclei

    International Nuclear Information System (INIS)

    Pandharipande, V. R.

    1999-01-01

    Quantum Monte Carlo methods provide an essentially exact way to calculate various properties of nuclear bound, and low energy continuum states, from realistic models of nuclear interactions and currents. After a brief description of the methods and modern models of nuclear forces, we review the results obtained for all the bound, and some continuum states of up to eight nucleons. Various other applications of the methods are reviewed along with future prospects

  7. Monte-Carlo simulation of electromagnetic showers

    International Nuclear Information System (INIS)

    Amatuni, Ts.A.

    1984-01-01

    The universal ELSS-1 program for Monte Carlo simulation of high energy electromagnetic showers in homogeneous absorbers of arbitrary geometry is written. The major processes and effects of electron and photon interaction with matter, particularly the Landau-Pomeranchuk-Migdal effect, are taken into account in the simulation procedures. The simulation results are compared with experimental data. Some characteristics of shower detectors and electromagnetic showers for energies up 1 TeV are calculated

  8. Cost of splitting in Monte Carlo transport

    International Nuclear Information System (INIS)

    Everett, C.J.; Cashwell, E.D.

    1978-03-01

    In a simple transport problem designed to estimate transmission through a plane slab of x free paths by Monte Carlo methods, it is shown that m-splitting (m > or = 2) does not pay unless exp(x) > m(m + 3)/(m - 1). In such a case, the minimum total cost in terms of machine time is obtained as a function of m, and the optimal value of m is determined

  9. Monte Carlo simulation of Touschek effect

    Directory of Open Access Journals (Sweden)

    Aimin Xiao

    2010-07-01

    Full Text Available We present a Monte Carlo method implementation in the code elegant for simulating Touschek scattering effects in a linac beam. The local scattering rate and the distribution of scattered electrons can be obtained from the code either for a Gaussian-distributed beam or for a general beam whose distribution function is given. In addition, scattered electrons can be tracked through the beam line and the local beam-loss rate and beam halo information recorded.

  10. Influencia de Gregorio de Nisa sobre Juan Escoto Eriúgena: Aproximación a partir del Periphyseon

    OpenAIRE

    Pachas, José Antonio

    2004-01-01

    A partir de los cinco libros del Periphyseon el autor intenta un acercamiento entre el pensamiento de Juan Escoto Eriúgena y Gregorio de Nisa, buscando sobre todo las principales influencias del segundo sobre el primero. Encuentra una plataforma de amplia base común entre ambos pensadores, marcada principalmente por un tipo de pensamiento circular según el esquema: procesión y retorno. Sin embargo, es notoria la influencia del Niseno sobre el Carolingio, principalmente cuando se trata de plan...

  11. Autoridad y memoria entre los killakas. Las estrategias discursivas de don Juan Colque Guarache en el sur andino (Siglo XVI)

    OpenAIRE

    Graña, Mario Julio

    2014-01-01

    Entre 1575 y 1577, don Juan Colque Guarache, cacique principal de las etnias killaka, asanaque, sivaroyo,haracapi y uruquilla del sur del lago Poopó, actual Oruro (Bolivia)eleva a consideración de las autoridades españolas una serie de "Probanzasde Méritos y Servicios" de sus antepasados. Esta fuente permite explorar la narración de la historia de un linaje indígena, a la luz de las estrategias discursivas empleadas por las autoridades étnicas dentro del contexto colonial.En este sentido, se ...

  12. On Both Sides of the Atlantic: Re-Visioning Don Juan and Don Quixote in Modern Literature and Film

    OpenAIRE

    Perez, Karen Patricia

    2013-01-01

    The study analyzes contemporary literature and film based on two of the most universal characters in Spanish literature, Don Juan and Don Quixote, in both Spain and Hispanic America. Although both characters have undergone re-visioning from work to work through the centuries, it is the aim of this work to present the most salient characteristics of both archetypes in modern times only. The focus of this study is on works by well-known writers from Hispanic America and contemporary writers in ...

  13. La recepción crítica del estreno de Himmelweg, de Juan Mayorga, en Madrid

    Directory of Open Access Journals (Sweden)

    Manuel Aznar Soler

    2016-12-01

    Full Text Available Este trabajo presenta un recorrido por la recepción crítica de Himmelweg, obra del autor español Juan Mayorga que versa sobre el Holocausto judío. Tras su estreno en Málaga el año anterior, Himmelweg llegaba al teatro María Guerrero de Madrid en 2004. Tanto el propio texto como la puesta en escena despertaron opiniones encontradas en las críticas teatrales de la prensa madrileña. Este trabajo recoge esas posturas.

  14. Uniformity and diversity in the composition of mineralizing fluids from hydrothermal vents on the southern Juan de Fuca Ridge.

    Science.gov (United States)

    Philpotts, J.A.; Aruscavage, P. J.; Von Damm, Karen L.

    1987-01-01

    Abundances of Li, Na, K, Rb, Ca, Sr, Ba, Mn, Fe, Zn, and Si have been determined in fluid samples from 7 vents located in three areas on the southern Juan de Fuca Ridge. The hydrothermal component estimated from the Mg contents of the samples ranges from 7% to 76%. Concentrations of Fe and Si, among other elements, in acid-stabilized solutions appear to be generally representative of the parental hydrothermal fluids, but some Zn determinations and most Ba values appear to be too low.-from Authors

  15. The First Expurgated Edition of a «Letrilla» by Juan Meléndez Valdés

    Directory of Open Access Journals (Sweden)

    Miguel Ángel LAMA

    2018-05-01

    Full Text Available A few months before the publication of the first posthumous edition of the Poesías of Juan Meléndez Valdés, two other exiles, who like him were unable to return to Spain, brought to light an unpublished version of the poem of the great author. The new version needs to be added to those already in existence; however, the curious fact about the new version is that it was expurgated due to the conditions of exile exarcerbated by the absolutism of King Fernando VII.

  16. Estudio de vulnerabilidad a los fenómenos del ambiente natural.Caso: Departamento Pocito, San Juan, Argentina

    OpenAIRE

    Elsa Nacif, Nora; Espinosa, María del Pilar

    2013-01-01

    Este trabajo profundiza en conocimientos de orden conceptual y metodológico en el marco del desarrollo urbano territorial en zonas sísmicas. Su objetivo es estudiar y aplicar métodos de evaluación de vulnerabilidad, contemplando los condicionantes fundamentales del medio natural. Se presenta como caso de estudio el Departamento Pocito, de la provincia de San Juan, Argentina; pero sus principios y procedimientos metodológicos pueden adaptarse a los requerimientos de otras zonas de característi...

  17. MACÁRIO E A IMPORTÂNCIA DOS BESTIÁRIOS NA PROSA NARRATIVA DE JUAN RULFO

    Directory of Open Access Journals (Sweden)

    MARIA IVONETE SANTOS SILVA

    2012-05-01

    Full Text Available Our proposal is to analyze the tale Macário by Juan Rulfo, originally published in the magazine Pan and America in the early '50s and, in 1953, in his book of short stories El Llano en Llamas. Our aim is to highlight the importance of the bestiary, influencing on the construction of a narrative seemingly simple, but which reaches density and accuracy to the extent that its narrator-protagonist - easily identified as crazy -, makes it emerge situations of religious conflicts and traumas which come from experiences of sexual repression.

  18. Levantamiento de suelos de la reserva ecológica sierra de San Juan, Nayarit, México

    Directory of Open Access Journals (Sweden)

    José I. Bojórquez Serrano

    1995-01-01

    Full Text Available A soil survey was carried out in the Ecological Reservation of San Juan and soils units were defined in order to establish their potential for sugar cane cultivation. Aerial photographs were used to define 12 soil mapping units based on landforms and the resulting soils; 5 of these were, consociations and 7 were associations. They were classified in a level of great groups when possible, resulting that most of them were included in the Order Andisol and Entisol, few in Inceptisol and even fewer in Alfisol.

  19. Energy Efficiency, Water Efficiency, and Renewable Energy Site Assessment: San Juan National Forest - Dolores Ranger District, Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Kandt, Alicen J. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Kiatreungwattana, Kosol [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2018-01-26

    This report summarizes the results from an energy efficiency, water efficiency, and renewable energy site assessment of the Dolores Ranger District in the San Juan National Forest in Colorado. A team led by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the assessment with United States Forest Service (USFS) personnel on August 16-17, 2016, as part of ongoing efforts by USFS to reduce energy and water use and implement renewable energy technologies. The assessment is approximately an American Society of Heating, Refrigerating, and Air-Conditioning Engineers Level 2 audit and meets Energy Independence and Security Act requirements.

  20. Literatrónica: un análisis hipertextual de Condiciones extremas, de Juan B. Gutiérrez

    Directory of Open Access Journals (Sweden)

    José María García Linares

    2014-06-01

    Full Text Available Este artículo aborda el análisis de la obra hipertextual Condiciones Extremas, de Juan B. Gutiérrez, desde una perspectiva hipertextual. Para ello se tendrá en cuenta no solo el contexto socio-cultural en el que surge, sino también cuestiones teóricas fundamentales para este tipo de obra como la nomenclatura, la nueva concepción de autor y lector y la del texto como juego.