7,679 research outputs found
Instrumentalismo, realismo y progreso en la concepción estructuralista de la ciencia
No full textTesi de Llicenciatura per a la obtenció del Grau de Filosofia. Facultat de Filosofia i Ciències de l'Educació. Universitat de Barcelona. Director: Quesada, J. Daniel. 1985
Fotografía UDBC020512
No full textFotografía del ejemplar Quesada, J., determinado como Kohleria trianae en el año 201
Fundador del movimiento ecologista en Costa Rica: Ricardo Quesada López - Calleja
No full textRicardo Quesada López-Calleja was born in Barrio Amón, San José, Costa Rica on August 31, 1929. He was the youngest son of Víctor Quesada Carvajal and Hortensia López-Calleja Mora. Educated both in private and public schools, he graduated as a lawyer from the University of Costa Rica. As a teenager, he worked in the Castro & Quesada Warehouse with his father. It is said that it was Quesada López-Calleja who started and transformed foreign trade in Costa Rica by establishing business relationships with different Eastern European countries, where he was appointed Ambassador. In the 70’s, he taught in the Escuela Normal Superior, and in the School of Political Science at the University of Costa Rica. Quesada published different iconographies from leaders of the world, some other works related to archeological artifacts in the National Museum, and his masterpiece Costa Rica. La Frontera Sur de Mesoamérica. Founder of the environmental movement in Costa Rica, he created along with a group of students, professors, and friends, the National Patrimony Defense Committee on April 24, 1970. Later on, he participated in important environmental efforts seeking to protect the country’s archaeological and natural patrimony, to introduce an environmental amendment in the Constitution of Costa Rica (Art. 50), and to enact the Environmental Law. Ricardo Quesada López-Calleja died on January 31, 1994, and, as the founder of the environmental movement, this was his legacy to the people of Costa Rica.Ricardo Quesada López-Calleja nace en el Barrio Amón, San José, Costa Rica, un 31 de agosto de 1929. Fue el hijo menor de Víctor Quesada Carvajal y Hortensia López-Calleja Fuentes. Estudió en escuelas públicas y privadas y se gradúa como abogado y notario en la Universidad de Costa Rica. Trabajó con su padre en el Almacén Castro y Quesada durante su juventud. Inicia y transforma el comercio exterior en Costa Rica al establecer relaciones comerciales con diversos países de Europa del Este, donde fue nombrado como embajador. En la década de los años 70 fue profesor en la Escuela Normal Superior de Costa Rica y en la Escuela de Ciencias Políticas de la Universidad de Costa Rica. Publica diversas iconografías de próceres, como de las principales piezas arqueológicas del Museo Nacional, así como su obra principal, Costa Rica. La Frontera Sur de Mesoamérica (Premio Nacional Aquileo J. Echeverría, 1980). Funda el movimiento ecologista en Costa Rica y crea el Comité de Defensa del Patrimonio Nacional (CDPN) el 24 de abril de 1970, junto con un grupo de estudiantes, profesores y amigos. Participa en múltiples luchas en defensa del patrimonio arqueológico y natural nacional e internacional, así como en el establecimiento de leyes en estos campos. En especial, la incorporación del párrafo segundo del artículo 50 de la Constitución Política de Costa Rica y la redacción del Código del Ambiente. Como fundador del movimiento ecologista, esta es la herencia que dejó Ricardo Quesada López-Calleja a los costarricenses, quien fallece en la ciudad de San José, el 31 de enero de 1994
Visualizing the Marrow of Science
No full textThis study proposes a new methodology that allows for
the generation of scientograms of major scientific domains,
constructed on the basis of cocitation of Institute
of Scientific Information categories, and pruned using
PathfinderNetwork, with a layout determined by algorithms
of the spring-embedder type (Kamada–Kawai),
then corroborated structurally by factor analysis. We
present the complete scientogram of the world for the
Year 2002. It integrates the natural sciences, the social
sciences, and arts and humanities. Its basic structure
and the essential relationships therein are revealed,
allowing us to simultaneously analyze the macrostructure,
microstructure, and marrow of worldwide scientific
output
Quesada gigas Distant 1905
No full text14.- Quesada gigas (Olivier) (Fig. 9) CALDAS: Río Cauca, hembra, 6-III-1998, E.R.Henao leg. TOLIMA: Mariquita-El Bosque, hembra, 14-VIII-2001, J. Salazar leg. Igual localidad y colector, macho, 13-VIII-2001. Igual localidad y colector, hembra, 6-VIII-2000.Published as part of Salazar E., Julián A., 2005, Algunos Cicádidos De Colombia (Homoptera: Cicadidae), pp. 192-204 in Boletín Científico - Centro de Museos - Museo de Historia Natural 9 on page 196, DOI: 10.5281/zenodo.837987
Variscan Metamorphism
No full textVarious segments of Variscan crust are currently exposed in Iberia in response to successive tectonic events during the Variscan orogeny itself and subsequent extensional and compressive events during the Alpine cycle, all accompanied by surface erosion, and collectively contributing to their exhumation. We review the main characteristics and geodynamic contexts of the metamorphic complexes developed in Iberia during the Variscan cycle, which include: (i) LP-HT complexes associated to the Cambrian-Early Ordovician rift stage; (ii) HP-LT complexes associated to subduction; and (iii) syn-to-post-collisional, MP and LP/HT complexes from the hinterland to the foreland fold-and thrust belts. All the above contexts are illustrated with case studies. Finally, a review of Variscan metamorphism in the Pyrenees and Catalan Coastal Ranges, located far away from the Rheic suture is also presented
The Use of infrared thermography in the study of sport and exercise physiology
No full textInfrared thermography (IRT) is considered an upcoming, promising methodology in the field of exercise physiology. Skin temperature distribution derives from muscular activity, skin blood flow as well as perspiration patterns in specific body parts. This chapter aims to provide a general overview on the literature about the study of the skin temperature response to exercise assessed by means of IRT and its relationship with other thermoregulatory variables, exercise characteristics and performance factors
Las doctrinas presociológicas.
No full text"De la revista Estudios, Buenos Aires, 1905, t. 9.""Obras de Ernesto Quesada": p. [93]-95.Mode of access: Internet
Showing the essential science structure of a scientific domain and its evolution
No full textCategory cocitation and its representation through social networks is proving to be a very adequate technique for the visualization and
analysis of great scientific domains. Its combination with pathfinder networks using pruning values r=∞and q=n−1 makes manifest the essence of research in the domain represented, or what we might call the `most salient structure'. The possible loss of structural information, caused by aggressive pruning in peripheral areas of the networks, is overcome by creating heliocentric maps for each category. The depictions obtained with this procedure become tools of great usefulness in view of their capacity to reveal the evolution of a given scientific domain over time, to show differences and similarities between different domains, and to suggest possible new lines for development. This article presents the scientogram of the United States for the year 2002, identifying its essential structure. We also show the scientograms of China for the years 1990 and 2002, in order to study its particular national evolution.
Finally, we try to detect patterns and tendencies in the three scientograms that would allow one to predict or flag the evolution of a scientific domain
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