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Search Results: 1 - 10 of 37290 matches for " Antonio Gonzalez "
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DE HENSLOW A HOOKER: DARWIN Y LOS INICIOS DEL PENSAMIENTO EVOLUTIVO EN BOTáNICA
Gonzalez Garavito Favio Antonio
Acta Biológica Colombiana , 2009,
Abstract: La obra de Darwin es con frecuencia asociada a diversas especies animales (p. ej. Sulloway, 1982), incluído el ser humano. Aunque estas contribuciones fueron importantes en la revolución darwiniana, su obra botánica (Fig. 1) no ha sido analizada con la misma frecuencia o énfasis, a pesar de que en ella se encuentra una gran cantidad de evidencia empírica para la teoría evolutiva. El presente artículo destaca la obra botánica de Darwin, principalmente en conexión con dos autores, uno de ellos su profesor en Cambridge, reverendo John Steven Henslow (1796-1861), y el otro su colega y amigo en Kew, Joseph Dalton Hooker (1817-1911), y con la incorporación de la teoría evolutiva en la botánica de la segunda mitad del S. XIX y de los comienzos del S. XX. Al mismo tiempo, se resalta el influjo que tuvieron las teorías darwinistas en el pensamiento biológico en otros países, y en el desarrollo y consolidación, como disciplinas modernas, de la fitogeografía, la biología reproductiva, la sistemática botánica y finalmente, la genética evolutiva del desarrollo (evo-devo) en plantas.
La provincia de Antofagasta. Creación y consolidación de un territorio nuevo en el Estado chileno: 1888-1933
Gonzalez Pizarro, José Antonio
Revista de Indias , 2010,
Abstract: The article examines diverse factors —geographic, economic, demographic, political and legal— which influenced the parliamentary debate and the subsequent creation of the province of Antofagasta under the government of Balmaceda. One of the most important differences of this province in comparison with other Chilean territories resulted from the municipal powers inherited from the Bolivian administration that contributed to the hardening of regionalist discourse in the face of the Chilean government’s aim of juridical uniformity. The article reviews the different proposals for a political-administrative structure for the Antofagasta territory and the different modifications affecting it from 1888 until 1933. Emphasis is placed on the complexity of the territory at the local, national and international levels. Se examinan los diversos factores —geográficos, económicos, demográficos, políticos y legales— que incidieron en el debate parlamentario y posterior creación de la provincia de Antofagasta durante el gobierno de Balmaceda. Entre los aspectos diferenciadores que exhibió la provincia respecto a otros territorios chilenos, resaltó la herencia del periodo del la administración boliviana, en lo concerniente a las facultades municipales que incidió en el fortalecimiento de un discurso regionalista ante las pretensiones del estado chileno, respecto a la uniformidad jurídica. Se pasa revista a las diversas propuestas de estructuración político-administrativa del territorio de Antofagasta y las distintas modificaciones que afectaron a éste desde 1888 hasta 1933, poniendo énfasis en la complejidad del territorio en el ámbito internacional, nacional y local.
Concordancia vs discordancia en la evaluacion del practicum: protocolos, instrumentos y elementos personales del proceso
Antonio Pedro Cid Gonzalez
REDU : Revista de Docencia Universitaria , 2012,
Abstract: En este articulo se trata de aportar el punto de vista correspondiente al tutor en relación al PRACTICUM entendido como un proceso colaborativo entre el supervisor y el tutor, es decir entre la Universidad y los centros colaboradores, con el fin de lograr una formación en función de la que se emite una doble calificación atendiendo al doble carácter curricular-practico del proceso. Este punto de vista pretende ser superador de esta doble interpretación de un mismo proceso que si bien en la mayoría de los casos es coincidente no siempre sucede así dando lugar a una discordancia en las calificaciones que parece injustificada puesto que si el proceso es único (aunque diverso en su contenido) debiera ser calificado como tal, de tal manera que el proceso evaluador conjunto superara su dicotomía interna (teoría-practica). Esta discordancia no es tan significativa en si misma cuanto en lo que subyace a la misma, indicador de falta de comunicación, colaboración y unidad de criterios consecuencia de la ausencia de consenso y seguramente compromiso en la programación. El análisis del proceso de planificación y programación del PRACTICUM, de su implementación, así como, de los instrumentos utilizados en el proceso de evaluación, guiaran algunas de las propuestas que se hacen en este artículo. ABSTRACT Concordance Vs discordance in the assessment of the Practicum: protocols, tools and personal items of the process. This work-paper is about providing the tutor approach of practicum, understood as a collaborative process between supervisor and tutor. We meant to explain the relationship between colleges/universities with the goal of achieving a learning from which we can get a double qualification because the dual nature, curricular-practical, of the process. This approach wants to surpass and improve this dual view of the same process because even most of the times it is equal, it doesn′t always happen this way, creating a discordance that looks unjustified. If the process is unique (although it is diverse in his content), this process should be qualified as such, making the collaborative assessment process surpass its internal dichotomy (theorical-practical). This discordance isn′t as important by itself but as evidenced of communication, collaboration and unity lack as the result of agreement absence and a probable commitment absence in programming. The analysis of the PRACTICUM planning and programming process, of his implementation, and the analysis of the used tools in this assessment process will guide some of the proposal made in this paper.
Tra violenza e sonnambulismo: la fin de siècle di Georges Sorel
Antonio Serrano Gonzalez
Scienza & Politica : per una Storia delle Dottrine , 1995, DOI: 10.6092/issn.1825-9618/2969
Abstract: Tra violenza e sonnambulismo: la fin de siècle di Georges Sorel
La storia politica nelle fauci del lupo
Antonio Serrano Gonzalez
Scienza & Politica : per una Storia delle Dottrine , 1996, DOI: 10.6092/issn.1825-9618/2924
Abstract: La storia politica nelle fauci del lupo
Spectra of Lattice Dirac Operators in Non-Trivial Topology Backgrounds
Antonio Gonzalez-Arroyo
Physics , 2002,
Abstract: Dirac operators in non-trivial topology backgrounds in a finite box are reviewed. We analyze how the formalism translates to the lattice, with special emphasis on uniform field backgrounds.
On Black Hole Scalar Hair in Asymptotically Anti de Sitter Spacetimes
Daniel Sudarsky,Jose Antonio Gonzalez
Physics , 2002, DOI: 10.1103/PhysRevD.67.024038
Abstract: The unexpected discovery of hairy black hole solutions in theories with scalar fields simply by considering asymptotically Anti de-Sitter, rather than asymptotically flat, boundary conditions is analyzed in a way that exhibits in a clear manner the differences between the two situations. It is shown that the trivial Schwarzschild Anti de Sitter becomes unstable in some of these situations, and the possible relevance of this fact for the ADS/CFT conjecture is pointed out.
Effect of the difference in ion mobilities on traveling-wave electro-osmosis
Antonio Gonzalez,Antonio Ramos,Pablo Garcia-Sanchez,Antonio Castellanos
Physics , 2008,
Abstract: We analyze the AC electro-osmotic motion of a 1:1 aqueous solution, taking into account the difference in mobilities and diffusion coefficients between positive and negative ions. This model serves to understand the behavior of common systems as a solution of NaCl in water. We pay special attention to two cases. First, the case of slightly different mobilities, that can model a KCl solution. Second, the case of a strongly asymmetric solution, with an almost vanishing mobility, applicable to the case of a salt where the negative ion is much more massive than the positive one. For all the cases, we perform the mathematical description and linear analysis of the problem, in order to establish the dependence of the induced velocity with the frequency, wavelength and amplitude of the applied voltage.
Analysis of the spatial variability of crop yield and soil properties in small agricultural plots
Vieira, Sidney Rosa;Paz Gonzalez, Antonio;
Bragantia , 2003, DOI: 10.1590/S0006-87052003000100016
Abstract: the objective of this study was to assess spatial variability of soil properties and crop yield under no tillage as a function of time, in two soil/climate conditions in s?o paulo state, brazil. the two sites measured approximately one hectare each and were cultivated with crop sequences which included corn, soybean, cotton, oats, black oats, wheat, rye, rice and green manure. soil fertility, soil physical properties and crop yield were measured in a 10-m grid. the soils were a dusky red latossol (oxisol) and a red yellow latossol (ultisol). soil sampling was performed in each field every two years after harvesting of the summer crop. crop yield was measured at the end of each crop cycle, in 2 x 2.5 m sub plots. data were analysed using semivariogram analysis and kriging interpolation for contour map generation. yield maps were constructed in order to visually compare the variability of yields, the variability of the yield components and related soil properties. the results show that the factors affecting the variability of crop yield varies from one crop to another. the changes in yield from one year to another suggest that the causes of variability may change with time. the changes with time for the cross semivariogram between phosphorus in leaves and soybean yield is another evidence of this result.
Ofertas de trabalho na Web para os profissionais brasileiros da informa??o-documenta??o: análise das competências e habilidades exigidas pelas empresas e institui??es
Gonzalez, José Antonio Moreiro;Vergueiro, Waldomiro;
Perspectivas em Ciência da Informa??o , 2012, DOI: 10.1590/S1413-99362012000100013
Abstract: the characteristics of employment offers in the information-documentation segment are analyzed. the sample was obtained from advertisements of brazilian companies and private institutions in the internet during the year 2010. the activity was part of a larger research which has as its main objective the construction of a taxonomy to classify and hierarchy the competences and knowledge demanded by the companies, as well as the characteristics of the offered positions. the information was extracted from 200 job offerings obtained in the portals catho: http://www.catho.com.br/ and portal do bibliotecário: http://www.portalbibliotecario.com.br/. each entry was maintained in its incidence context and with its original expression. the terms passed by a standardization process. the analysis answers to the following classifications: more demanded activities, knowledge and tasks, aptitudes, competences and abilities, besides the incidence of units and of information professionals.
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