Paradigmas De La Gerencia En El Siglo Xxi

El avance de la ciencia y la tecnología ha generado una nueva dinámica en la economía mundial, la cual permitió la globalización de los mercados, el cual ha incrementado la competencia y el crecimiento exagerado en la demanda de bienes y servicios.Hoy este escenario representa una realidad que no se puede ocultar y por consiguiente los gerentes deben reaccionar de manera que adopten nuevas acciones conducentes a hacer frente a nuevos retos, estos derivados de las cambiantes realidades sociales, económicas y demográficas del mercado en constante evolución.El presente documento expone algunos de los principales retos que los gerentes deben enfrentar en la dinámica de la administración del siglo XXI

Implantação de minibibliotecas escolares: uma iniciativa da Embrapa para agricultores familiares.

A velocidade com que a informação é gerada transforma rapidamente as sociedades. Aqueles que não tem acesso à informação são marginalizados do processo de desenvolvimento social, econômico e tecnológico. Essa distribuição injusta das oportunidades é o ponto de partida da nossa discussão. Nosso foco são as escolas públicas rurais enquanto espaços ?privilegiados? de promoção da inclusão social. O presente artigo apresentará uma análise da experiência de implantação de Minibibliotecas Escolares no Semi-Árido Brasileiro, atualmente com 440 escolas participantes. Disponibiliza também os resultados de uma pesquisa de avaliação realizada entre novembro de 2006 e fevereiro de 2007, com as escolas participantes do projeto. Esses procedimentos fazem parte das ações da Embrapa no Programa Fome Zero desenvolvidas desde 2004, com o intuito de propiciar o repasse de informações e a gestão tecnológica através das escolas da área rural

Photoelectron diffraction: from phenomenological demonstration to practical tool

The potential of photoelectron diffraction—exploiting the coherent interference of directly-emitted and elastically scattered components of the photoelectron wavefield emitted from a core level of a surface atom to obtain structural information—was first appreciated in the 1970s. The first demonstrations of the effect were published towards the end of that decade, but the method has now entered the mainstream armoury of surface structure determination. This short review has two objectives: First, to outline the way that the idea emerged and the way this evolved in my own collaboration with Neville Smith and his colleagues at Bell Labs in the early years: Second, to provide some insight into the current state-of-the art in application of (scanned-energy mode) photoelectron diffraction to address two key issue in quantitative surface structure determination, namely, complexity and precision. In this regard a particularly powerful aspect of photoelectron diffraction is its elemental and chemical-state specificity

Photoelectron diffraction investigation of the structure of the clean TiO2(110)(1×1) surface

The surface relaxations of the rutile TiO2(110)(1×1) clean surface have been determined by O 1 s and Ti 2p3∕2 scanned-energy mode photoelectron diffraction. The results are in excellent agreement with recent low-energy electron diffraction (LEED) and medium energy ion scattering (MEIS) results, but in conflict with the results of some earlier investigations including one by surface x-ray diffraction. In particular, the bridging O atoms at the surface are found to relax outward, rather than inward, relative to the underlying bulk. Combined with the recent LEED and MEIS results, a consistent picture of the structure of this surface is provided. While the results of the most recent theoretical total-energy calculations are qualitatively consistent with this experimental consensus, significant quantitative differences remain

Flexible access to conformationally-locked bicyclic morpholines

A preparatively accessible route to a series of conformationally-locked bicyclic morpholines has been developed. This flexible approach allows for diversification in order for a small array of lead-like scaffolds to be synthesised from readily available key building blocks

The local adsorption structure of benzene on Si(001)-(2 × 1): a photoelectron diffraction investigation

Scanned-energy mode C 1s photoelectron diffraction has been used to investigate the local adsorption geometry of benzene on Si(001) at saturation coverage and room temperature. The results show that two different local bonding geometries coexist, namely the 'standard butterfly' (SB) and 'tilted bridge' (TB) forms, with a composition of 58 ± 29% of the SB species. Detailed structural parameter values are presented for both species including Si–C bond lengths. On the basis of published measurements of the rate of conversion of the SB to the TB form on this surface, we estimate that the timescale of our experiment is sufficient for achieving equilibrium, and in this case our results indicate that the difference in the Gibbs free energy of adsorption, ΔG(TB)−ΔG(SB), is in the range −0.023 to +0.049 eV. We suggest, however, that the relative concentration of the two species may also be influenced by a combination of steric effects influencing the kinetics, and a sensitivity of the adsorption energies of the adsorbed SB and TB forms to the nature of the surrounding benzene molecules

PARADIGMAS DE LA GERENCIA EN EL SIGLO XXI

El avance de la ciencia y la tecnología ha generado una nueva dinámica en la economía mundial, la cual permitió la globalización de los mercados, el cual ha incrementado la competencia y el crecimiento exagerado en la demanda de bienes y servicios.Hoy este escenario representa una realidad que no se puede ocultar y por consiguiente los gerentes deben reaccionar de manera que adopten nuevas acciones conducentes a hacer frente a nuevos retos, estos derivados de las cambiantes realidades sociales, económicas y demográficas del mercado en constante evolución.El presente documento expone algunos de los principales retos que los gerentes deben enfrentar en la dinámica de la administración del siglo XXI

Cobertura de suelo por residuos de cultivos: modelos para su estimación a partir de imágenes satelitales

Las imágenes provenientes de sensores remotos constituyen una importante fuente de información sobre cultivos que puede utilizarse para obtener parámetros agronómicos. La soja (Glycine max (L.) Merrill) y el maíz (Zea mays L.) son los cultivos más importantes en Argentina, por área sembrada y réditos económicos. En este trabajo se desarrollaron modelos de redes neuronales para evaluar porcentaje de cobertura de suelo por residuos de soja y maíz, a partir de contadores digitales y reflectancias de distintas bandas del satélite LANDSAT. El comportamiento de los modelos fue muy bueno para todas las combinaciones de variables de entrada de las redes neuronales y, si el porcentaje de cobertura supera el 75%, rastrojos posteriores pero inmediatos a la cosecha, se consigue el mejor ajuste entre los valores observados y estimados. Los resultados mostraron que se puede predecir porcentaje de cobertura de suelo por residuos de cultivos con valores de hasta R2 = 0,93.Sociedad Argentina de Informática e Investigación Operativa (SADIO