Tree edit distance as a baseline approach for paraphrase representation

Finding an adequate paraphrase representation formalism is a challenging issue in Natural Language Processing. In this paper, we analyse the performance of Tree Edit Distance as a paraphrase representation baseline. Our experiments using Edit Distance Textual Entailment Suite show that, as Tree Edit Distance consists of a purely syntactic approach, paraphrase alternations not based on structural reorganizations do not find an adequate representation. They also show that there is much scope for better modelling of the way trees are aligned.

Mudanças climáticas nas regiões insulares

Tese de Doutoramento, Física, 27 de Novembro de 2013, Universidade dos Açores.

Les femmes, oubliées de la recherche clinique [Women, forgotten by clinical research].

Durant des années, les femmes ont été sous-représentées dans les études cliniques. Or, de nombreuses molécules n'ont pas le même effet chez les hommes et les femmes, en raison de différences pharmacodynamiques et pharmacocinétiques. Il en découle un manque d'informations sur les effets thérapeutiques ou indésirables des substances mais aussi, plus généralement, une moins bonne connaissance des pathologies chez les femmes et une prise en charge plus souvent sous-optimale.La sous-représentation est due à divers facteurs, allant de la perception des femmes au sein de la société à des enjeux éthiques vis-à-vis de la grossesse. L'importance d'inclure suffisamment de femmes comme sujets d'études nécessite ainsi une prise de conscience médicale et également sociale ; elle devra s'accompagner de changements entre autres politiques ou législatifs. For years, women were underrepresented in clinical studies. But the effect of many drugs differ among women and men, due to pharmacokinetic and pharmacodynamic differences. As a result, there is a lack of information on therapeutic or adverse effets of drugs and, more generally, a lack of knowledge on diseases, leading more frequently to sub-optimal medical care in women. This underrepresentation is due to various factors, including the social role of women or ethical issues about pregnancy. The need for adequate representation of women in clinical studies is a social as well as medical concern, that implies political and legal changes.

La acción de grupo : mecanismo adecuado y efectivo para reparar graves violaciones a los derechos humanos

La presente tesis, demuestra que la acción de grupo, consagrada en el Artículo 88 de la Constitución Política de Colombia y en la Ley 472 de 1998, es un mecanismo idóneo y efectivo de reparación en casos de graves violaciones a los derechos humanos v.gr. desplazamiento forzado. Para ello, en una primera parte, se presentan algunos antecedentes internacionales de esta acción, como lo son los International Mass Claims Processes y las Class Actions anglosajonas, que evidencian los casos de procedencia y los requisitos que se han establecido a nivel internacional para que una acción colectiva pueda proceder para indemnizar esta clase de violaciones. Posteriormente, en una segunda parte, se analizan los principales aspectos procesales de la acción de grupo, como lo son, por ejemplo, la conformación del grupo, la representatividad adecuada, el termino de caducidad de la acción, la notificación de la demanda, la publicación de la sentencia y el estimativo de perjuicios, entre otros aspectos, que a nivel sustancial y procedimental muestran que la acción de grupo es un mecanismo adecuado para indemnizar in integrum a las víctimas de las graves violaciones a los derechos humanos. Por último, se establece que el estándar internacional de reparación que es empleado en el sistema interamericano de protección de derechos humanos (Restitución, indemnización. rehabilitación, satisfacción, garantía de no repetición y proyecto de vida) puede ser aplicado de manera adecuada y efectiva a través del empleo de la acción de grupo.

Using remotely sensed data to support flood modelling

Recent severe flooding in the UK has highlighted the need for better information on flood risk, increasing the pressure on engineers to enhance the capabilities of computer models for flood prediction. This paper evaluates the benefits to be gained from the use of remotely sensed data to support flood modelling. The remotely sensed data available can be used either to produce high-resolution digital terrain models (DTMs) (light detection and ranging (Lidar) data), or to generate accurate inundation mapping of past flood events (airborne synthetic aperture radar (SAR) data and aerial photography). The paper reports on the modelling of real flood events that occurred at two UK sites on the rivers Severn and Ouse. At these sites a combination of remotely sensed data and recorded hydrographs was available. It is concluded first that light detection and ranging Lidar generated DTMs support the generation of considerably better models and enhance the visualisation of model results and second that flood outlines obtained from airborne SAR or aerial images help develop an appreciation of the hydraulic behaviour of important model components, and facilitate model validation. The need for further research is highlighted by a number of limitations, namely: the difficulties in obtaining an adequate representation of hydraulically important features such as embankment crests and walls; uncertainties in the validation data; and difficulties in extracting flood outlines from airborne SAR images in urban areas.

Observations of the depth of ice particle evaporation beneath frontal cloud to improve NWP modelling

The evaporation (sublimation) of ice particles beneath frontal ice cloud can provide a significant source of diabatic cooling which can lead to enhanced slantwise descent below the frontal surface. The strength and vertical extent of the cooling play a role in determining the dynamic response of the atmosphere, and an adequate representation is required in numerical weather-prediction (NWP) models for accurate forecasts of frontal dynamics. In this paper, data from a vertically pointing 94 GHz radar are used to determine the characteristic depth-scale of ice particle sublimation beneath frontal ice cloud. A statistical comparison is made with equivalent data extracted from the NWP mesoscale model operational at the Met Office, defining the evaporation depth-scale as the distance for the ice water content to fall to 10% of its peak value in the cloud. The results show that the depth of the ice evaporation zone derived from observations is less than 1 km for 90% of the time. The model significantly overestimates the sublimation depth-scales by a factor of between two and three, and underestimates the local ice water content by a factor of between two and four. Consequently the results suggest the model significantly underestimates the strength of the evaporative cooling, with implications for the prediction of frontal dynamics. A number of reasons for the model discrepancy are suggested. A comparison with radiosonde relative humidity data suggests part of the overestimation in evaporation depth may be due to a high RH bias in the dry slot beneath the frontal cloud, but other possible reasons include poor vertical resolution and deficiencies in the evaporation rate or ice particle fall-speed parametrizations.

High resolution simulation of the variability of surface energy balance fluxes across central London with urban zones for energy partitioning

The parameterization of surface heat-flux variability in urban areas relies on adequate representation of surface characteristics. Given the horizontal resolutions (e.g. ≈0.1–1km) currently used in numerical weather prediction (NWP) models, properties of the urban surface (e.g. vegetated/built surfaces, street-canyon geometries) often have large spatial variability. Here, a new approach based on Urban Zones to characterize Energy partitioning (UZE) is tested within a NWP model (Weather Research and Forecasting model;WRF v3.2.1) for Greater London. The urban land-surface scheme is the Noah/Single-Layer Urban Canopy Model (SLUCM). Detailed surface information (horizontal resolution 1 km)in central London shows that the UZE offers better characterization of surface properties and their variability compared to default WRF-SLUCM input parameters. In situ observations of the surface energy fluxes and near-surface meteorological variables are used to select the radiation and turbulence parameterization schemes and to evaluate the land-surface scheme

An insight into the theoretical investigation of possible piezoelectric effect in samarium titanate (SmTiO3)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Rotações tridimensionais em biomecânica via quatérnions: aplicações na análise dos movimentos esportivos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A legitimidade da participação processual na tutela dos direitos difusos

A abordagem teórica da participação processual se encontra em um ponto de interseção entre uma teoria política e social e uma teoria do direito, pelo que, foi necessário iniciar pela teoria social de Habermas, para então transitar para sua teoria política e dela para a sua teoria sobre o direito. Nos termos de uma teoria discursiva, a correção da decisão judicial decorre não apenas da racionalidade da legislação, mas, também da reprodução, no âmbito do discurso jurídico, das condições do discurso racional, desde que observadas as limitações pragmáticas que incidem sobre o discurso jurídico, limitações essas que decorrem da especificidade do discurso jurídico, que, voltado para questões de decidibilidade, não pode se desenvolver sob os mesmos pressupostos da ética do discurso. Mesmo limitado pelas imposições pragmáticas do discurso jurídico, nele, assim como nos discursos práticos em geral, a argumentação é necessária à justificação racional e à correção da decisão judicial, e é neste aspecto que o discurso jurídico se conecta com a participação, essencial para a justificação racional e legitimidade da decisão judicial. Assim, a legislação processual deve ser submetida à crítica, para que se verifique se a participação processual prevista na legislação é capaz de garantir um procedimento legítimo. No caso da legislação nacional, há duas situações que não se justificam racionalmente, a primeira, referente ao procedimento judicial atual, calcado no paradigma individual, insuficiente para o processamento de lides formuladas em torno dos direitos difusos, pois impedem que a necessária discussão em torno dos paradigmas jurídicos que serão apresentados em juízo, e em torno da representação adequada, aconteçam. A segunda referente à restrição à participação individual na maioria das ações processuais voltadas à tutela dos direitos difusos que não se justifica racionalmente. Apesar de existir um indicativo de mudança, consistente em um anteprojeto de código de processo coletivo em que está prevista a ampliação da legitimação a qualquer membro da sociedade, esta ampliação não se estende a todas as ações que podem ser utilizadas para tutelar interesses e direitos difusos, pois ficaram de fora as ações de controle de constitucionalidade. Assim, a reflexão em torno do tema da participação processual não pode ser encerrada, nem mesmo quando o código de processo coletivo for promulgado, dada a essencialidade da participação de todos os interessados, ou de seus representantes legítimos, em qualquer procedimento judicial em que seus interesses ou direitos estejam sendo discutidos. De igual modo, apenas a continuidade da reflexão em torno da insuficiência do procedimento judicial pautado no paradigma liberal para a tutela de direitos difusos é capaz de criar uma discussão racional sobre o tema, cuja conclusão represente a vitória das melhores razões.

Processos auto-organizados em agregados de larvas de moscas-varejeiras em dispersão pós-alimentar: experimentação, modelagem e validação

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Proposta de uma representação cartográfica para cartas geotécnicas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Climate-induced interannual variability of marine primary and export production in three global coupled climate carbon cycle models

Fully coupled climate carbon cycle models are sophisticated tools that are used to predict future climate change and its impact on the land and ocean carbon cycles. These models should be able to adequately represent natural variability, requiring model validation by observations. The present study focuses on the ocean carbon cycle component, in particular the spatial and temporal variability in net primary productivity (PP) and export production (EP) of particulate organic carbon (POC). Results from three coupled climate carbon cycle models (IPSL, MPIM, NCAR) are compared with observation-based estimates derived from satellite measurements of ocean colour and results from inverse modelling (data assimilation). Satellite observations of ocean colour have shown that temporal variability of PP on the global scale is largely dominated by the permanently stratified, low-latitude ocean (Behrenfeld et al., 2006) with stronger stratification (higher sea surface temperature; SST) being associated with negative PP anomalies. Results from all three coupled models confirm the role of the low-latitude, permanently stratified ocean for anomalies in globally integrated PP, but only one model (IPSL) also reproduces the inverse relationship between stratification (SST) and PP. An adequate representation of iron and macronutrient co-limitation of phytoplankton growth in the tropical ocean has shown to be the crucial mechanism determining the capability of the models to reproduce observed interactions between climate and PP.

Modelling Nd-isotopes with a coarse resolution ocean circulation model: Sensitivities to model parameters and source/sink distributions

The neodymium (Nd) isotopic composition (Nd) of seawater is a quasi-conservative tracer of water mass mixing and is assumed to hold great potential for paleoceanographic studies. Here we present a comprehensive approach for the simulation of the two neodymium isotopes 143Nd, and 144Nd using the Bern3D model, a low resolution ocean model. The high computational efficiency of the Bern3D model in conjunction with our comprehensive approach allows us to systematically and extensively explore the sensitivity of Nd concentrations and Nd to the parametrisation of sources and sinks. Previous studies have been restricted in doing so either by the chosen approach or by computational costs. Our study thus presents the most comprehensive survey of the marine Nd cycle to date. Our model simulates both Nd concentrations as well as Nd in good agreement with observations. Nd covaries with salinity, thus underlining its potential as a water mass proxy. Results confirm that the continental margins are required as a Nd source to simulate Nd concentrations and Nd consistent with observations. We estimate this source to be slightly smaller than reported in previous studies and find that above a certain magnitude its magnitude affects Nd only to a small extent. On the other hand, the parametrisation of the reversible scavenging considerably affects the ability of the model to simulate both, Nd concentrations and Nd. Furthermore, despite their small contribution, we find dust and rivers to be important components of the Nd cycle. In additional experiments, we systematically varied the diapycnal diffusivity as well as the Atlantic-to-Pacific freshwater flux to explore the sensitivity of Nd concentrations and its isotopic signature to the strength and geometry of the overturning circulation. These experiments reveal that Nd concentrations and Nd are comparatively little affected by variations in diapycnal diffusivity and the Atlantic-to-Pacific freshwater flux. In contrast, an adequate representation of Nd sources and sinks is crucial to simulate Nd concentrations and Nd consistent with observations. The good agreement of our results with observations paves the way for the evaluation of the paleoceanographic potential of Nd in further model studies.

Donde se rompen las nubes : Lever House : Nueva York 1950

En la victoriosa América de la posguerra, origen de la nueva configuración del mundo occidental, surgió una singular obra que iba a representar la abstracción de los valores universales de la arquitectura moderna. La construcción de la Lever House en el Nueva York de 1950 no sólo iba a propiciar un punto de inflexión en la Historia del rascacielos y de la arquitectura corporativa americana, definiría a su vez un nuevo paradigma a partir del cual se establecerían generalizados modelos para la construcción del futuro. La oportuna confluencia entre los acentos pragmáticos del mundo capitalista americano y las formulaciones positivistas de la arquitectura moderna europea, convenientemente recogidas como manifiesto construído del Estilo Internacional, supusieron resolver de manera definitiva el prolongado dilema americano de cómo debería ser la adecuada representación del edificio corporativo moderno. El estudio se detendrá en el valor de la metáfora, la conversación y la oportunidad de una obra cuya proyección trascendió ampliamente las aspiraciones de sus creadores. Provocando una fuerte idealización que llegaría hasta nuestros días. ABSTRACT In the postwar victorious America, origin of the new configuration of the Western World, a unique work will represent the abstraction of the universal values of modern architecture. The construction of the Lever House in the New York of 1950 would not only bring about a turning point in the history of American skyscrapers and corporate architecture, in turn define a new paradigm from which generalized models for building the future. The timely confluence between pragmatic accents of the American capitalist world and the positivistic formulations of the modern European architecture, conveniently collected as constructed manifesto of the International Style, definitively accounted to resolve that old American dilemma of how should be the adequate representation of the Modern corporate building. The study will focus on the value of metaphor, conversation and the opportunity of a work whose projection widely transcended the aspirations of its creators. Causing an strong idealization would reach to nowadays.