554 research outputs found
Educación ambiental, vida en la naturaleza y ciencia escolar : Estado de situación y posibles estrategias de integración
No full textLa construcción de relaciones entre Vida en la Naturaleza, Educación Ambiental y Ciencia Escolar da lugar a un campo de trabajo educativo sobre el cual es posible trazar diversas configuraciones didácticas. Desde esta perspectiva, en el presente estudio se analiza el estado de situación de este campo relacional a partir de los resultados obtenidos de encuestas realizadas a estudiantes de Institutos Superiores de Formación Docente en Educación Física, para luego proponer posibles estrategias de intersección didáctica, siempre desde el marco referencial que brinda la tríada conceptual: motricidad, ambiente próximo y planetariedad. Las propuestas están dirigidas a enriquecer la formación inicial de futuros educadores así como también a contribuir en la formación permanente de docentes de diversos profesorados, pudiendo ser extendidas a facilitadores del ámbito educativo no formalFil: Navone, Hugo D.. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; CONICET. Instituto de Física de Rosario.Fil: Martínez, Franco. Escuela Superior de Comercio No 49
The Political Communication of Hugo Chávez: The Evolution of Aló Presidente
No full textAló Presidente was a weekly television programme anchored and produced by Hugo Chávez during his presidency in Venezuela. The show, a version of a phone-in, was broadcast live on national television at 11am on Sundays and lasted on average six hours. It followed the presidential agenda to a new location every week, where Hugo Chávez would inaugurate factories, read Latin American poetry, interview Fidel Castro, and sing llanero songs. This thesis investigates the role that Aló Presidente played in the making of the “Bolivarian Revolution”, Hugo Chávez’s political project. Through a critical reading of the transcripts of the show, it explores the 378 episodes, or 1656 hours, that aired between 1999 and 2012. Aló Presidente was the cornerstone of Chávez’s political communication, replacing press conferences and interviews. Chávez was known for his continuous presence on radio and television and his daily presidential addresses. However, only on the Sunday show could the audience phone the president and share their ideas, emotions and everyday life concerns. This thesis reviews the narratives that underlined the relationship between the audience/electorate and the host/president on Aló Presidente. It is argued that Aló Presidente played a fundamental role in articulating the identity of a public that shared the values and ideas of Chávez’s hegemonic project. Moreover, it is argued that the show Aló Presidente and the ideological process called the “Bolivarian Revolution” can be read as two co-related arms of a same project, and that they informed and defined each other throughout Chávez’s presidency. In this context, this thesis assesses the evolution of the programme in light of the political events taking place in Venezuela during that time. Aló Presidente is thus seen as a repository, or “black box”, of the discourses that articulated the Bolivarian identity and constructed the legitimacy of Hugo Chávez as the leader of a populist movement in Venezuela. Finally, the core of this thesis is that the co-relation between the show and the hegemonic project evolved over time to strengthen the authoritarian tendencies of Hugo Chávez’s regime. Following the activities of Aló Presidente over 13 years, the investigation charts that evolution in three different stages: 1) participation, 2) education, and 3) obedience, arguing that what started as a seemingly participatory space, progressively became a platform that presented Hugo Chávez’s figure as the ideologue of a populist movement, and ultimately secured his position as the indisputable leader and sole authority of Venezuela’s “Bolivarian Revolution”
Comparative analysis of the orbital structure for non–cuspy and cuspy triaxial models of galaxies using different expansions of the gravitational potential
No full textUn método para generar modelos de galaxias elípticas consiste en partir de un sistema de partículas con una configuración adecuada y seguir su evolución con un código de N-cuerpos hasta que alcanza el equilibrio. En trabajos anteriores hemos utilizado el código de L. A. Aguilar para generar modelos tanto no cuspidales como cuspidales, ofreciendo los segundos una mejor representación de las galaxias elípticas. Sin embargo, el método propuesto por Hernquist & Ostriker es más adecuado para los casos con cúspides centrales, puesto que utiliza una expansión del potencial en funciones radiales que ya tiene carácter cuspidal. Aquí consideramos dos modelos, uno no cuspidal y otro cuspidal, obtenidos con el método de Aguilar y cuyos potenciales ajustamos ahora con la expansión de Hernquist & Ostriker. Obtuvimos las ecuaciones variacionales correspondientes y las empleamos para determinar los exponentes de Lyapunov de órbitas ya estudiadas con el método de Aguilar y separar las caóticas. Las órbitas regulares las clasificamos mediante el análisis de sus frecuencias orbitales. Presentamos una comparación de los resultados obtenidos con los dos métodos para ambos tipos de órbitas.One way to create models of elliptical galaxies is to start from a system of particles with a suitable distribution and to follow its evolution with an N-body code until it reaches equilibrium. In previous works we used the code of L.A. Aguilar to generate noncuspy and cuspy models, the latter giving a better representation of elliptical galaxies. However, the method proposed by Hernquist and Ostriker is more suitable for the cases with central cusps, because it uses an expansion of the potential in radial functions that already reflects the cuspy character. Here we consider two models, one non-cuspy and another cuspy, obtained with the method of Aguilar and whose potentials we now fit with the Hernquist and Ostriker expansion. We obtained the corresponding variational equations and we used them to determine the Lyapunov exponents of orbits already investigated with the method of Aguilar and to separate the chaotic ones. We classified the regular orbits through the analysis of their orbital frequencies. Here we present a comparison of the results obtained with the two methods for both types of orbits.Fil: Zorzi, Alejandra Francisca. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); ArgentinaFil: Navone, Hugo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentin
Dice, sticks, pixels and bits: didactic alternatives to explore the methodology of monte carlo in a ludic tone
No full textEn este artÍculo se presentan estrategias didácticas en tono lúdico para explorar la metodología de Monte Carlo y se analizan las puestas en práctica realizadas en diversos escenarios educativos. Las propuestas elaboradas permiten poner en acción conceptos de probabilidad y estadística de un modo divertido y atrayente mediante la realización de experimentos-juegos cooperativos con objetos reales y virtuales. Cada estrategia está dirigida a profesores de escuelas secundarias y de institutos de formación docente, y también al ciclo básico de la Universidad, para que sea modificada, recreada y profundizada de acuerdo a las áreas específicas de aplicación.This paper presents didactic strategies in a ludic tone to explore the methodology of Monte Carlo and analizes the implementations that have been performed in several educational scenarios. These proposals allow us to put into action concepts of probability and statistics in an amusing and attractive way by conducting cooperative “experiments-games” that are based on the use of real and virtual objects. Each strategy is aimed to teachers of high school and teacher training institutes, and also for early stages at University level, in order to be modified, recreated, and enhanced according to the specific areas of application.Fil: Navone, Hugo Daniel. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); ArgentinaFil: Scancich, Miriam Marcela. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); ArgentinaFil: Zorzi, Alejandra Francisca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentin
The Unified Cluster Catalogue: towards a comprehensive and homogeneous data base of stellar clusters
No full textWe introduce the Unified Cluster Catalogue, the largest catalogue of stellar clusters currently listing nearly 14000 objects. In this initial release it exclusively contains Milky Way open clusters, with plans to include other objects in future updates. Each cluster is processed using a novel probability membership algorithm, which incorporates the coordinates, parallax, proper motions, and their associated uncertainties for each star into the probability assignment process. We employ Gaia DR3 data up to a G magnitude of 20, resulting in the identification of over a million probable members. The catalogue is accompanied by a publicly accessible website designed to simplify the search and data exploration of stellar clusters.Fil: Perren, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Pera, María Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Navone, Hugo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Vazquez, Ruben Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentin
VARIACIONES EN TORNO A LA RIQUEZA DE LA NADA: INFLUENCIA DEL PENSAMIENTO CHINO CLÁSICO Y EL BUDISMO ZEN EN LA POESIA DE JUAN L. ORTIZ, HUGO PADELETTI Y ARTURO CARRERA\ud \ud \ud \ud VARIACIONES EN TORNO A LA RIQUEZA DE LA NADA: INFLUENCIA DEL PENSAMIENTO CHINO CLÁSICO Y EL BUDISMO ZEN EN LA POESIA DE JUAN L. ORTIZ, HUGO PADELETTI Y ARTURO CARRERA
No full textThis dissertation investigates how Juan L Ortiz (1896-1978), Hugo Padeletti (1928), and Arturo Carrera (1948), interpret and represent Chinese classical and Zen Buddhist systems of thinking in their poetry, in 20th century Argentina. I argue that these authors share a common aesthetical and philosophical goal in their interpretations of Chinese, and Japanese systems of thinking portrayed in their poetry. They are seeking philosophical and aesthetical alternatives to Eurocentric Modernity. In order to achieve this, these three authors lean in their poetry towards the dissolution of the self, passivity, contemplation, silence and exposure to the outside. Nonetheless, their interpretations of these Chinese and Japanese systems of thinking change relative to the way in which they react to historical, social, cultural and political events that shaped their cultural contexts. \ud
My investigation involves a close reading of the poetry of each author in the context of contemporary literary currents in 20th Century Argentina, in order to trace differences, and similarities, as well as individual specificities in their interpretations and representations of classical Chinese and Zen Buddhist verbal aesthetics and thought. The purpose of this research is to explore how, alongside during the 20th century, these Argentinian poets critique European Modernity in Argentina, through recurring to orientalism, as an alternative model to the Cartesian Rationalism and the other ideologies associated to the dominant discourse of progress
The dynamical evolution of close-in binary systems formed by a super-Earth and its host star: Case of the Kepler-21 system
No full textAims. The aim of this work is to develop a formalism for the study of the secular evolution of a binary system which includes interaction due to the tides that each body imparts on the other. We also consider the influence of the J2-related secular terms on the orbital evolution and the torque, caused by the triaxiality, on the rotational evolution, both of which are associated only to one of the bodies. We apply these set of equations to the study of the orbital and rotational evolution of a binary system composed of a rocky planet and its host star in order to characterize the dynamical evolution at work, particularly near spin-orbit resonances. Methods. We used the equations of motion that give the time evolution of the orbital elements and the spin rates of each body to study the dynamical evolution of the Kepler-21 system as an example of how the formalism that we have developed can be applied. Results. We obtained a set of equations of motion without singularities for vanishing eccentricities and inclinations. This set gives, on one hand, the time evolution of the orbital elements due to the tidal potentials generated by both members of the system as well as the oblateness of one of them. On the other hand, it gives the time evolution of the stellar spin rate due to the corresponding tidal torque and of the planet’s rotation angle due to both the tidal and triaxiality-induced torques. We found that for the parameters and the initial conditions explored here, the tidally and triaxiality-induced modifications of the tidal modes can be more significative than expected and that the time of tidal synchronization strongly depends on the values of the rheological parameters.Fil: Luna, Santiago Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; ArgentinaFil: Navone, Hugo Daniel. Universidad Nacional de Rosario. Facultad de Ciencias Exactas, Ingeniería y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Melita, Mario Daniel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentin
OPUS 300 — THE POET'S PRESS ANTHOLOGY 1971-2021
No full textThe 50th Anniversary Anthology. The Poet's Press celebrated its 50th anniversary in 2021. This 406-page oversize anthology contains the best and representative selections spanning the whole history of the press -- from long out-of-print chapbooks up to the present day. Brett Rutherford has chosen work from 146 poets and writers, including 363 poems, two play excerpts, and five prose works. Works are selected not only from single-author chapbooks and books, but also from the numerous anthologies published by the press.
This volume is full of surprises. Some of the best poems of Poet's Press principal authors like Barbara A. Holland and Emilie Glen are collected here along with works from poets as diverse as Hugo, Longfellow, Goethe, Scott, and Shelley. The Greenwich Village poets of the last Bohemia of the 1960s and 1970s are joined by their successors across the Hudson from the "Poets of the Palisades" poetry community. What all the poems share is that they are a delight to read.
This book also includes a year-by-year chronology of the publications of the press, an annotated bibliography of authors and titles, and a list of all poets published in books from The Poet's Press and its imprints
Scientometric portrait of Nobel laureate Leland H. Hartwell
No full textLeland H. Hartwell was honoured with the Nobel Prize in Physiology or Medicine (2001) at his 62 years age and at 41 years of research publishing career. The first contribution of the author was in 1961 at the age of 22. The number of his contributions in a year peaked in 1997 when it touched 8. He had 108 publications during 1961 – 2001 in domains: Molecular Biology of Cell Cycle Regulation (43), Genetics of Cell Division (48), Genomic Re-arrangement and DNA Repair (9), Molecular Genetics of Yeast Cell Fission (5), and Drug Target Interaction (3) which were analysed for authorship pattern with his 101 collaborators. Most active researchers having number of publications with Leland H. Hartwell were : Weinert, T. A. (10), Garvik, B. M. (8), McLaughlin, C. S. (8), Jenness, D. D. (5). His productivity coefficient was 0.76 which clearly indicates that his productivity increased after 50 percentile age. Highest collaboration coefficient (1) for Leland H. Hartwell was found during 1963-1965, 1968-1969, 1977, 1981-1983, 1985-1990, 1996 and 1998-2001. Journals have been the most preferred channel of communication where, as many as 96 papers out of 108 have been published. The core journals publishing his papers were: Cell (14), Genetics (12), Mol. Cell Biol. (8), J. Bactariol. (7), J. Cell Biol. ( 7), Science (7) J. Mol. Biol.(6), Exp. Cell Res. (5), and Proc. Nat. Acad. Sci.(5). Publication density is 2.63 and Publication concentration is 14.63. Most prolific keywords in titles of publications were: Saccharomyces cerevisiae , Yeast , Cell division cycle , RAD9, DNA Damage , Genes , Cell cycle, Genetic control , Check point (s) , Cell division , Mutant of Yeast
Nobel Laureate Anthony J Leggett: A scientometric portrait
No full textThis paper attempts to analyse the publication productivity of Anthony J. Leggett, the 2003 Nobel Prize winner in physics. His contributions peaked in 1987, 1994, and 1998 with 10 papers each. He had 194 publications during 1964 - 2004 in domains like Superfluid 3He (65), Foundations of Quantum Mechanics (36), Dissipative Quantum Systems (24), Atomic Alkali Gases (18), and Miscellaneous (51)which were analysed for authorship pattern with his 70 collaborators. Most active collaborators with Anthony J Leggett were: A. Garg with six papers and A. O. MCaldeira, D. M. Ginsberg, D. J. Vanharlingen , F. Sols, S.Takagi and D. A. Wollman with five papers each. His productivity coefficient was 0.60 which clearly indicates that his productivity
increased after 50 percentile age. The highest degree of collaboration (1) for Anthony J. Leggett was found during 1964, 1971 and 1983. Journals have been the most preferred channel of communication, where as many as 139 papers out of 194 have been published. The core journals publishing his papers were: Phys. Rev. Leu. (42), Phys. Rev. B (9), J. Low Temp. Phys. (8),Phys. Rev. A (7), Ann. Phys. (6), Foundations of physics (6), J. Phys.(5), Prog. Theor: Phys. (5), and Rev. Mod. Phys. (5).Publication density was 3.02 and publication concentration was 3.59
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