954 resultados para Y-branch
Resumo:
El Consejo Superior de la Judicatura ha adelantado programas de modernización tecnológica, tanto de los despachos judiciales como de los entes de administración de la rama judicial, pero aún se puede constatar la generalización del atraso judicial y consecuentemente, la pérdida de credibilidad en el sistema. Objetivo: Determinar el impacto que tiene el uso de las tecnologías de información y las comunicaciones en la gestión judicial de la Dirección Seccional de Administración Judicial de Cúcuta. Métodos: Se utilizó un tipo de estudio descriptivo, aplicado a 25 jueces, 115 empleados de los diferentes despachos judiciales y a 5 magistrados quienes fueron actores clave para el estudio. Resultados: Los resultados indican que el impacto de las TIC en la gestión judicial de la Entidad es moderado basado en las limitaciones actuales del flujo de información con los usuarios y con las demás entidades de la rama judicial. Conclusión: No se ha integrado el sistema de información con todos los municipios de la región de Norte de Santander y Arauca. Adicionalmente, a pesar que se cuenta con herramientas tecnológicas para mantener interactividad con proveedores y usuarios del servicio judicial, el personal de la Entidad no los conoce completamente por la resistencia al cambio que supone realizar las tareas de diferente manera.
Resumo:
La Geometría del Espacio es una rama de la Matemática que estudia las propieda-des y medidas de figurasque se relacionan con la mayoría de objetos tridimensionales que tenemos a nuestro alrededor; por esto nuestro trabajo titulado “Elaboración de una guía y material didáctico de la Geometría del Espacio para el Laboratorio de Matemática de la carrera de Matemáticas y Física de la Universidad de Cuenca” da lugar a una nueva estrategia que puede utilizar el docente en el proceso de enseñanza-aprendizaje de esta asignatura. En el capítulo uno de nuestro trabajo de graduación se analizan los aspectos generales de la educación así como las corrientes pedagógicas que están presentes dentro del proceso educativo, para luego hablar de la didáctica y la importancia de trabajar con material concreto en el área de Matemática, específicamente en la Geometría del Espacio así como los recursos que son óptimos para trabajar esta asignatura. En el capítulo dos, se demuestra mediante un muestreo no probabilístico que existe dificultad en la comprensión de los contenidos de la Geometría del Espacio y que una buena opción para desarrollar el proceso de enseñanza-aprendizaje sobre esta asignatura es la utilización de material concreto y de una guía didáctica que facilite la comprensión de los contenidos. Por último en el capítulo tres se presenta un conjunto de diez prácticas sobre pla-nos y sólidos, las cuales, siguen los pasos que exige una práctica de laboratorio innovadora, de una manera ordenada y secuencial para reforzar el proceso de enseñanza-aprendizaje.
Resumo:
El presente trabajo aborda la problemática de la injerencia de los jueces en la Administración en Colombia. Dentro de la teoría del derecho público, se entiende que es función de esta rama del poder público llevar a cabo políticas y acciones para satisfacer las necesidades de la comunidad. Sin embargo, particularmente desde la aparición de la Corte Constitucional en Colombia, encontramos que los jueces y altos tribunales igualmente toman decisiones que podrían ser típicamente administrativas, por ejemplo, mediante acciones populares, ordenar la construcción de un hospital, de una escuela; la intervención en materia ambiental y de movilidad, entre otras, estas decisiones no han sido recibidas por los juristas de una manera pacífica, especialmente por la ruptura del principio de la separación de poderes y por sus consecuencias en el impacto fiscal.
Error, Bias, and Long-Branch Attraction in Data for Two Chloroplast Photosystem Genes in Seed Plants
Resumo:
Sequences of two chloroplast photosystem genes, psaA and psbB, together comprising about 3,500 bp, were obtained for all five major groups of extant seed plants and several outgroups among other vascular plants. Strongly supported, but significantly conflicting, phylogenetic signals were obtained in parsimony analyses from partitions of the data into first and second codon positions versus third positions. In the former, both genes agreed on a monophyletic gymnosperms, with Gnetales closely related to certain conifers. In the latter, Gnetales are inferred to be the sister group of all other seed plants, with gymnosperms paraphyletic. None of the data supported the modern ‘‘anthophyte hypothesis,’’ which places Gnetales as the sister group of flowering plants. A series of simulation studies were undertaken to examine the error rate for parsimony inference. Three kinds of errors were examined: random error, systematic bias (both properties of finite data sets), and statistical inconsistency owing to long-branch attraction (an asymptotic property). Parsimony reconstructions were extremely biased for third-position data for psbB. Regardless of the true underlying tree, a tree in which Gnetales are sister to all other seed plants was likely to be reconstructed for these data. None of the combinations of genes or partitions permits the anthophyte tree to be reconstructed with high probability. Simulations of progressively larger data sets indicate the existence of long-branch attraction (statistical inconsistency) for third-position psbB data if either the anthophyte tree or the gymnosperm tree is correct. This is also true for the anthophyte tree using either psaA third positions or psbB first and second positions. A factor contributing to bias and inconsistency is extremely short branches at the base of the seed plant radiation, coupled with extremely high rates in Gnetales and nonseed plant outgroups. M. J. Sanderson,* M. F. Wojciechowski,*† J.-M. Hu,* T. Sher Khan,* and S. G. Brady
Resumo:
Infection of plant cells by potyviruses induces the formation of cytoplasmic inclusions ranging in size from 200 to 1000 nm. To determine if the ability to form these ordered, insoluble structures is intrinsic to the potyviral cytoplasmic inclusion protein, we have expressed the cytoplasmic inclusion protein from Potato virus Y in tobacco under the control of the chrysanthemum ribulose-1,5-bisphosphate carboxylase small subunit promoter, a highly active, green tissue promoter. No cytoplasmic inclusions were observed in the leaves of transgenic tobacco using transmission electron microscopy, despite being able to clearly visualize these inclusions in Potato virus Y infected tobacco leaves under the same conditions. However, we did observe a wide range of tissue and sub-cellular abnormalities associated with the expression of the Potato virus Y cytoplasmic inclusion protein. These changes included the disruption of normal cell morphology and organization in leaves, mitochondrial and chloroplast internal reorganization, and the formation of atypical lipid accumulations. Despite these significant structural changes, however, transgenic tobacco plants were viable and the results are discussed in the context of potyviral cytoplasmic inclusion protein function.
Resumo:
In recent times, complaining about the Y Generation and its perceived lack of work ethic has become standard dinner-party conversation amongst Baby Boomers. Discussions in the popular press (Salt, 2008) and amongst some social commentators (Levy, Carroll, Francoeur, & Logue, 2003) indicate that the group labelled Gen Y have distinct and different generational characteristics. Whether or not the differences are clearly delineated on age is still open to discussion but in the introduction to "The Generational Mirage? a pilot study into the perceptions of leadership by Generation X and Y", Levy et al. argue that "the calibre of leadership in competing organisations and the way they value new and existing employees will play a substantial role in attracting or discouraging these workers regardless of generational labels". Kunreuther's (2002) suggests that the difference between younger workers and their older counterparts may have more to do with situational phenomena and their position in the life cycle than deeper generational difference. However this is still an issue for leadership in schools.
Resumo:
This collection of historical accounts provides diverse perspectives on the structure and culture of the community of researchers who participate in activities of the Australasian Science Education Research Association (ASERA). It describes the formation of the Association, and identifies major changes and challenges for the ever growing and internationalisation of its membership.
Resumo:
Este libro es una invitación reconceptualizar las maneras de escuchar, conocer, acompañar y educar a los niños desde la primera infancia en un mundo multicultural, cambiante y posmoderno. Los trabajos que lo integran parten de perspectivas que generan nuevas formas de ver, hacer y estar en el mundo, ofrecen una reconstrucción de la psicología del desarrollo y destacan la importancia de la cultura, la etnia, el género y la sexualidad, sin olvidar la historia, la política y el discurso científico.
Resumo:
Well implemented criterion-referenced assessment (CRA) requires dedicated time and effort, especially in describing realistic expectations of evidence of achievement to students in the form of criteria sheets (or grading rubrics). It is also takes time out of delivering content to teach students how to judge their own work using criteria sheets. In 2007, to engage third year Microbiology students in using criteria sheets for the first time in their degree, we devised an innovative assessment tutorial supported by online resources. We were sceptical of much of the literature that reported ‘agreed’ characteristics of our predominantly gen Y cohort, because of the older ages of the majority of authors. These authors claim gen Y has a propensity for digital media, overconfidence in their own abilities and a collaborative orientation. We rejected this stereotype when developing the tutorial. Evaluations by students were positive and there was no dramatic change to grades for the unit. These results are similar to those in the literature for non gen Y cohorts. This lends support to our claim that giving students control over their own learning, irrespective of their generational label, is worth the time and effort.
Resumo:
Raman spectroscopy has been used to study the rare earth mineral churchite-(Y) of formula (Y,REE)(PO4) •2H2O. The mineral contains yttrium and depending on the locality, a range of rare earth metals. The Raman spectra of two churchite-(Y) mineral samples from Jáchymov and Medvědín in the Czech Republic were compared with the Raman spectra of churchite-(Y) downloaded from the RRUFF data base. The Raman spectra of churchite-(Y) are characterized by an intense sharp band at 975 cm-1 assigned to the ν1 (PO4)3- symmetric stretching mode. A lower intensity band observed at around 1065 cm-1 is attributed to the ν3 (PO43-) antisymmetric stretching mode. The (PO43-) bending modes are observed at 497 cm-1 (ν2) and 563 cm-1(ν4). Some small differences in the band positions between the four churchite-(Y) samples from four different localities were found. These differences are possible to explain as different compositions of the churchite-(Y) minerals.