A three dimensional Dirichlet-to-Neumann operator for waves over topography

Surface water waves are considered propagating over highly variable non-smooth topographies. For this three dimensional problem a Dirichlet-to-Neumann (DtN) operator is constructed reducing the numerical modeling and evolution to the two dimensional free surface. The corresponding Fourier-type operator is defined through a matrix decomposition. The topographic component of the decomposition requires special care and a Galerkin method is provided accordingly. One dimensional numerical simulations, along the free surface, validate the DtN formulation in the presence of a large amplitude, rapidly varying topography. An alternative, conformal mapping based, method is used for benchmarking. A two dimensional simulation in the presence of a Luneburg lens (a particular submerged mound) illustrates the accurate performance of the three dimensional DtN operator

Investigating the 'latent' deficit hypothesis : age at time of head injury, executive and implicit functions and behavioral insight

This study investigated the 'latent deficit' hypothesis in two groups of frontotemporal headinjured patients, those injured prior to steep morphological and corresponding functional maturational periods for frontotemporal networks (≤ age 25), and those injured >28 years. The latent deficit hypothesis proposes that early injuries produce enduring cognitive deficits manifest later in the lifespan with graver consequences for behavior than adult injuries, particularly after frontal pathology (Eslinger, Grattan, Damasio & Damasio, 1992). Implicit and executive deficits both contribute to behavioral insight after frontotemporal head injury (Barker, Andrade, Romanowski, Morton & Wasti, 2006). On the basis of morphological and behavioral data, we hypothesised that early injury would confer greater vulnerability to impairment on tasks associated with frontotemporal regions than later injury. Patients completed experimental tasks of implicit cognition, executive function measures and the DEX measure of behavioural insight (Behavioral Assessment of the Dysexecutive Syndrome: Wilson, Alderman, Burgess, Emslie, & Evans, 1996). The Early Injury group were more impaired on implicit cognition tasks compared to controls that Late Injury patients. There were no marked group differences on most executive function measures. Executive ability only contributed to behavioral awareness in the Early Injury Group. Findings showed that age at injury moderates the relationship between executive and implicit cognition and behavioral insight and that early injuries result in longstanding deficits to functions associated with frontotemporal regions partially supporting the latent deficit hypothesis

Charged rotating black holes in higher dimensions

We use a recent implementation of the large $D$ expansion in order to construct the higher-dimensional Kerr-Newman black hole and also new charged rotating black bar solutions of the Einstein-Maxwell theory, all with rotation along a single plane. We describe the space of solutions, obtain their quasinormal modes, and study the appearance of instabilities as the horizons spread along the plane of rotation. Generically, the presence of charge makes the solutions less stable. Instabilities can appear even when the angular momentum of the black hole is small, as long as the charge is sufficiently large. We expect that, although our study is performed in the limit $D\to\infty$, the results provide a good approximation for charged rotating black holes at finite $D\geq 6$.Comment: 21 pages, 1 figur

Intranet/internet: control y administración para servicios educativos

La presente tesis presenta las bases para la integración de un servidor Web con una base de datos, mediante la implementación de un formulario interactivo enlazado con una base de datos y sus posteriores aplicaciones prácticas. Básicamente, el trabajo consiste en suministrar las bases en cuanto a software necesario y configuración del servidor Web para implementar la aplicación anteriormente mencionada. Además de mencionar el ahorro en costos por ser una aplicación sencilla, utilizando herramientas informáticas de fácil aplicación. Son varias las aplicaciones prácticas que pueden generarse del proyecto; una de ellas es la utilización para los registros de estudiantes, la cual ha sido implementada y puede ser accesada por Web, permitiendo realizar consultas de materias, de estudiantes registrados, etc, información necesaria para la administración de las distintas unidades académicas

Efeitos da vibração corporal no equilíbrio em idosos: uma revisão de literatura

Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em FisioterapiaObjectivo: Sumariar a actual evidência da vibração corporal no equilíbrio em indivíduos idosos, contribuindo para a sistematização do conhecimento sobre esta temática. Metodologia: Pesquisa computorizada nas bases de dados PubMed, Web of Knowledge e PEDro, de modo a seleccionar estudos randomizados controlados com avaliação sobre o efeito da vibração corporal no equilíbrio em idosos. Resultados: Foram incluídos 11 artigos, apresentando uma qualidade média de 5,55 em 10 na escala de PEDro. Os artigos seleccionados para este estudo utilizaram 3 diferentes plataformas de vibração, sendo que 5 dos referidos artigos utilizaram a plataforma vibratória da marca Galileo (vibração sinusoidal alternada), 5 utilizaram a plataforma vibratória da marca Power-Plate (vibração vertical sincronizada) e 1 utilizou um protótipo de uma plataforma vibratória, Sea-saw (vibração sinusoidal alternada). Conclusões: A vibração corporal parece ter um efeito positivo na melhoria do equilíbrio em idosos, podendo eventualmente contribuir para a prevenção de quedas e consequentemente na melhoria da qualidade de vida. Este método aparenta ser uma alternativa viável para pacientes idosos, independentemente da idade. Objective: To summarize the present evidence of body vibration in the balance of elderly people, therefore contributing to the systematization of our knowledge of this subject. Methods: Computer research in PubMed, Web of Knowledge and PEDro data bases, in order to select randomizes controlled trials with the evaluation of body vibration in the balance of the elderly. Results: 11 articles were considered, presenting an average quality of 5,55 in 10, regarding the PEDro scale. The selected articles for this study used 3 different vibrating platforms, 5 of the above mentioned articles used the vibrating platform brand Galileo (alternated sinusoidal vibration), other 5 used the vibrating platform brand Power-Plate (synchronized vertical vibration) and 1 used a vibrating platform prototype brand Sea-saw (alternated sinusoidal vibration). Conclusions: Body vibration seems to achieve a beneficial effect in improving balance in elderly people, eventually contributing to fall´s prevention and consequently improving life quality. This method seems to be a viable alternative for elderly patients, regardless of their age

Response of two grapevine (Vitis vinifera L.) Portuguese varieties Tinta Roriz and Touriga Nacional to different irrigation regimes in the Douro Region, Portugal

The effect of several deficit irrigation regimes on vine water status, grape yield and quality parameters were studied in two Portuguese cultivars, Tinta Roriz (2007 and 2008 growing seasons) and Touriga Nacional (2014 and 2015 growing seasons) (Vitis vinifera L.) grown in a commercial vineyards located in the Douro region, Portugal. Treatments consisted of non-irrigated vines and three deficit irrigation regimes with a constant fraction of reference evapotranspiration (ETo): 0.2, 0.4 and 0.6. The reference evapotranspiration was calculated using modified FAO Penman-Monteith equation and water was applied three times a week, from pre-veraison until one week before harvest, through a drip irrigation system. The results showed that moderate water supplies during ripening period, for the region where the study was conducted (severe water deficits), improved significantly the grapevine water status, leaf photosynthesis and transpiration in both cultivars. Yield components and pruning weights showed a significant increase in irrigated treatments with more water supplied. There were no significant differences in the majority of fruit quality parameters. However, the total phenols and the colour intensity showed a tendency to decrease in irrigated treatments with more water supplied.info:eu-repo/semantics/publishedVersio

Analysis of DREB1D gene sequence in different Coffea genotypes : S03P07

In several plant species, the DREB genes play a key role in responses to abiotic stress. Since the development of molecular markers is one of the major goals for accelerating breeding programs, a study was done to evaluate the sequence variability of the DREB1D gene in several Coffea genotypes. The promoter and coding regions of this gene were cloned and sequenced from 16 coffee plants (including 10 from C. arabica and 4 from C. canephora), most of them characterized by different phenotypes (tolerance vs. susceptibility) regarding to drought. This showed that the DREB1D-coding sequence was highly conserved within coffee plants. However, several nucleic polymorphisms ("single nucleotide polymorphism" [SNP] and insertion/deletion [INDELs]) were found in the coffee DREB1D promoter regions. These polymorphisms could explained the differences of DREB1D gene expression levels previously observed in leaves of drought tolerant and susceptible clones of C. canephora. These polymorphisms also allowed the identification of different haplotypes like orthologous sequence variants (OSVs) of C. canephora and C. eugenioides as well as homologous single-nucleotide variants (HSVs) for C. arabica subgenomes (C. canephora and C. eugenioides) that could be used to develop allele and homoeologous specific markers for this locus. Work is now under way to evaluate the capacity of DREB1D promoter regions to control the expression of the uidA reporter gene in transgenic coffee plants. Work supported by CAPES-COFECUB, Consórcio Pesquisa Café and INCT-Café (CNPq/FAPEMIG). (Texte intégral

Vulnerabilidad social y riesgo hídrico en el gran La Plata : Provincia de Buenos Aires, Argentina

El riego es una construcción social. Esto no ha sido tenido suficientemente en cuenta en la gestión de áreas con riesgo recurrente de excesos o déficit hídricos. Por otra parte, la vulnerabilidad social se define por las condiciones sociales, económicas, culturales e institucionales de una sociedad, previas a la ocurrencia de un evento catastrófico que la predispone para sufrir o evitar daños. Las consecuencias que dejó el temporal ocurrido el 2 de abril de 2013 cuando precipitaron sobre el área de la Ciudad de La Plata y sus alrededores aproximadamente unos 400 mm de los cuales 313 mm lo hicieron en tan sólo seis horas se cobró 60 vidas (cifra oficialmente reconocida por las autoridades), 357.500 ciudadanos damnificados, lo que equivale a más del 55 por ciento del total de la población del partido de La Plata y 2.600 millones de pesos en pérdidas materiales. Este fenómeno supone la presentación de alternativas de manejo del riesgo hídrico que tenga en cuenta las condiciones de recurrencia de las inundaciones e identificar los grupos sociales con algún nivel de necesidades básicas insatisfechas que se encuentran vulnerables a la recurrencia de estos eventos. Para ello, se propone una metodología capaz de alertar a los actores involucrados sobre el estado de criticidad de las áreas identificadas como más vulnerables mediante la utilización de los Sistemas de Información Geográfica (SIG) que posibilitan integrar la información estadística a nivel de radio censal proveniente del Censo Nacional de Población, Hogares y Viviendas 2010 con productos provenientes del procesamiento digital de imágenes satelitalesFil: Andrade, María Isabel. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.Fil: Lucioni, Nora Claudia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.Fil: Schomwandt, David. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina

Wind farm output

The problem was to devise a simulation method for the wind speeds at a set of sites, that has the correct autocorrelation, cross-correlation and distributions. The report includes one way of doing this, using a multivariate auto-regressive system, and other comments and observations that may lead to better ways of achieving the aim