Implications of anomalous gauge boson interactions to the fermion electromagnetic moments

We calculate the electromagnetic fermion form-factors induced by the anomalous gauge boson interactions contained in the operators ODW and ODB. Other results regarding anomalous triple gauge boson interactions are briefly overviewed. We study the interplay between vertex corrections and gauge boson self-energies extended to the longitudinal degrees of freedom. The physical couplings to an external electromagnetic field are then derived.Comment: 14 pages, LATeX, to appear in Modern Physics Letters A, some literary changes, a few notation correction

Áquila Earthquake (2009): influence of seismic source model and structure to modeling the strong ground motions

O sismo, ocorrido em 6 de Abril de 2009 (Mw 6,3) junto à cidade de Áquila (Itália), provocou uma grande destruição. Uma das consequências deste evento foi o impacto na opinião pública em torno da capacidade científica para a estimação da perigosidade sísmica e a necessidade de criação de sistemas de alerta sísmico. A determinação dos mecanismos de fonte sísmica de eventos sísmicos ocorridos e registados permite melhores caracterizações dos movimentos sísmicos para uma determinada área de estudo e consequentemente melhores cenários de risco. Se a região em estudo possuir propriedades físicas específicas e muito distintas de local para local, capazes de provocar alterações locais dos movimentos sísmicos (efeitos de sítio), torna-se imperativo uma caracterização bem definida do meio de propagação das ondas sísmicas de forma a poder sintetizar informação capaz de contribuir para a boa estimação da perigosidade sísmica. No âmbito deste trabalho pretende-se estudar a influência do mecanismo de fonte sísmica e da estrutura na modelação de movimentos sísmicos no caso de Áquila. A metodologia adoptada consiste na determinação da distribuição de deslizamentos sobre o plano de falha e utilização desta informação na modelação de sismogramas sintéticos (com recurso ao algoritmo E3D). Será igualmente estabelecida uma comparação de resultados considerando-se um meio com e sem bacia e considerando-se uma fonte pontual e uma fonte extensa

A TV, a escola e os jovens : perspectivas sobre a sua relação

A televisão é, nos dias de hoje, um dos mais eficientes instrumentos comunicativos de sempre. Fonte de lazer e divertimento, consegue ser simultaneamente um meio de divulgação do conhecimento, capaz de ensinar e divulgar informação que, de outra forma pareceria inacessível. Esta comunicação assume-se como o resultado de uma investigação acerca do poder da televisão e da relação deste media com as crianças, os pais e a escola, onde para além de se analisar a forma como a TV influencia as actividades realizadas no dia-a-dia pelas crianças e jovens, se apresentam, através do resultado da aplicação de inquéritos em meio escolar, as perspectivas dos mais novos face à programação (educativa) exibida pela televisã

Fermentation of white grape pomace by S. bombicola for the production of sophorolipids

The use/valorization agro-industrial waste is a priority worldwide. The objective of this work was a novel valorization of white grape pomace (WGP), a lignocellulosic waste feed-stock rich in carbohydrates (around 42 wt. % of free soluble sugars) and oil (around 13 wt. %). The objective was to use the WGP free sugars and oil as carbon sources for the production of sophorolipids (SL) by Starmerella bombicola, a yeast species known for thriving in sugar-rich environments and being fructophilic, while equally comfortable with the presence of oils in growth medium. The goal was to produce sophorolipids (SL), bio-surfactants known to be biodegradable, biocompatible and with high added value surfactant characteristics, which also exhibit anti-tumor and antimicrobial activity. Free sugars of WGP were obtained by water extraction and oils of WGP was obtained by supercritical CO2 extraction and also by Soxhlet extraction. Yeast growth experiments led to a maximum sophorolipid yield of 34.9 g/L with a medium containing both WGP free carbohydrates and oil. Sophorolipids were purified by n-hexane extraction and characterized using LC-MS, 1H-NMR and surface tension. Both types of sophorolipids, lactonic and acidic, with both linoleic acid and oleic acid moieties, were detected in LC-MS analysis. These moieties were the most abundant in WGP oil: linoleic acid (62 %) and oleic acid (17 %). 1H-NMR also detected the presence of C18 hydrocarbon chain lengths and sophorose. The SL obtained had a minimum surface tension (MST) of 35.62 mN/m for a critical micellar concentration (CMC) of 53.79 mg/L

Geophysical prospection of antique structural traces from São Francisco (Évora) Royal Palace with the use of georradar and laser scanner.

In the place where currently there is the D. Manuel Palace, in Évora, will have been the Royal Palace of S. Francisco, one of the residences of the Portuguese monarchy between the sixteenth and seventeenth century. The building began to decline in 1616 and has been adapted to other occupations, abandoned and destroyed by re. Between this building and the market there are archaeological remains, discovered during the execution of urban works. The current building was the result of several changes on what’s left, the last one on the front of its facade, which were removed monumental stairs that there is photographic record. This work intends to show the existence of ancient palace remains, integrated into the structures that currently exist within the research effective methods of application of geophysical techniques in Archaeology. To realize the goal, it proceeded to carry out geophysical prospecting with georadar, in areas adjacent to the palace, and with laser scanner, in order to integrate the results of georadar a three-dimensional representation of the current building. The results show the existence of structures that have corresponded to the palace staircase and remains consistent with the view that the palace would be extended to the side where there is the current market

Tomographic determination of the spatial Distribution of Water Vapor using GNSS observations.

This paper focuses on investigating Global Navigation Satellite Systems (GNSS) observations as precipitation sensors and also analyse the contribution of the GNSS dense networks as an efficient tool for meteorological purposes based one Water Vapor Tomography. For that, case-studies are presented using data from BELEM and MANAUS dense network. For Water Vapor Tomograhy, a software package has been developed to reconstruct the GNSS water vapour spatial distribution. The obtained results indicate that GNSS can detect the variations in precipitation at different periods of the year and that dense GNSS networks allow us to generate images of the spatial and temporal distribution of water vapour. However, the influence of several parameters, such as number and distribution of receivers, grid sizes and initial values, has to be taken into account for the image reconstruction

Geophysical data fusion of ground-penetrating radar and magnetic datasets using 2D Wavelet transform and singular value decomposition

This work addresses the problem of the lack of perceptibility that geophysical data may have. Data fusion allows us to combine datasets, providing an improved and more informative source of information about structures buried in the ground. After testing different approaches, a strategy was developed using ground-penetrating radar and magnetic datasets collected over the same area. Data collected at the Roman Villa of Pisões (Beja, Portugal), which is a place of easy application of geophysical methods, were used to test the method, but with problems caused by the properties of the soil. The approach was based on processing operations that allow the fusion of images obtained by different equipment widely used in medical imaging for tumor detection and image processing. The goal is to create an improved image with data fusion that has higher quality than the input images, allowing a better understanding of the object of the study. The approach is composed of two stages: pre-processing and data fusion. Pre-processing is applied to enhance the input data. It consists of removing background noise through singular value decomposition applied in the spectral domain. Then the calculation of the data entropy will highlight the differences corresponding to the spatial alignments compatible with buried structures. Then, both entropy maps of the two datasets are fused in the second processing step to produce the final image. This step involves applying the 2D wavelet transform to each entropy map, decomposing them into sub-bands. Algorithms to calculate multiresolution singular value decomposition and the image gradient are applied to the sub-bands. The processed sub-band pairs are then fused using specific fusion rules. The fused image is obtained by applying the inverse of the wavelet transform. Data fusion with the proposed approach allows us to obtain a detailed image that is sharper and of better quality than the input datasets. The increase in sharpness and quality can be quantified through the sharpness index and the BRISQUE quality index in several steps of the processing. The obtained values confirm the graphical results. Images produced by the proposed data fusion approach suggest that the perceptibility has increased, allowing us to provide conclusions about the existence of buried structures.This work has been partially supported by the research project “Innovación abierta e inteligente en la EUROACE” with the reference 0049_INNOACE_4_E, by the European Union through the European Regional Development Fund included in COMPETE 2020, and through the Portuguese Foundation for Science and Technology (FCT) by the projects UIDB/04683/2020-ICT (Institute of Earth Sciences) and SFRH/BSAB/143063/2018

Calibration of model parameters for the cyclic response of end-plate beam-to-column steel-concrete composite joints

Composite joints, considering the composite action of steel and concrete, exhibit, in general, high strength and high ductility. As a consequence, the use of this type of joint has been increasing in many countries, especially in those that are located in earthquake-prone regions. In this paper, a hysteretic model with pinching is presented that is able to reproduce the cyclic response of steel and composite joints. Secondly, the computer implementation and adaptation of the model in a spring element within the computer code Seismosoft is described. The model is subsequently calibrated using a series of experimental test results for composite joints subjected to cyclic loading. Finally, typical parameters for the various joint configurations are proposed.Financial support from the Portuguese Ministry of Science, Technology and Higher Education (Ministério da Ciência, Tecnologia e Ensino Superior) under contract grants from PRODEP III (5.3), for Pedro Nogueiro, Foundation of Science and Technology through POCI/ECM/55783/2004 and FEDER through INTERREG-III-A (project RTCT-B-Z-/SP2.P18) is gratefully acknowledged. The assistance provided by Seismosoft, is also most (http://www.seismosoft.com). The supply of the data files from experimental tests by D. Dubina and R. Liew is warmly thanked

O encerramento de postos na GNR e as suas implicações no sentimento de insegurança das populações: Caso de estudo de Venda Nova

A fim de encontrar a origem dos problemas que afetam diretamente a criminalidade e a insegurança surge a necessidade de implementação de um policiamento orientado para a resolução de problemas, a participação dos cidadãos na segurança, permitindo o bem-estar à população − o policiamento de proximidade. Para este efeito, a GNR direciona uma atuação proativa que permite ampliar o sentimento de segurança das pessoas em consequência de uma maior intensidade e visibilidade do patrulhamento. O presente estudo pretende avaliar o sentimento de insegurança experienciado pela população após o encerramento do posto da Guarda Nacional Republicana de Venda Nova no concelho de Montalegre, originando para tal um conjunto de questões de investigação, bem como de hipóteses, utilizando para o efeito um estudo exploratório, descritivo e correlacional e uma investigação de tipo quantitativo. Assim, foram primeiramente operacionalizados os conceitos relevantes para efeitos de enquadramento e compreensão do assunto em estudo, tendo-se em seguida procedido ao tratamento dos dados resultantes do questionário aplicado à população abrangida pelo encerramento do posto, com o intuito de alcançar o objetivo do trabalho e de responder ao problema anteriormente referido, que se encontra compreendido nas conclusões e nas recomendações. Em conclusão, este estudo comtempla uma localidade com o predomínio de população feminina, idosa, com menos anos de escolaridade, com mais pessoas casadas, mais trabalhadores por conta de outrem e reformados/pensionistas. Das questões formuladas com o intuito de relacionar as componentes do sentimento de insegurança (medo do crime, vitimação e componente comportamental), conclui-se que o sexo, a idade e a situação profissional revelaram influenciar o sentimento de insegurança não se verificando o mesmo para as habilitações literárias da população estudada. Como preocupações com o encerramento do posto da GNR, destaca-se a maior distância que atualmente os separa.In order to find the problems’ source that directly affect the crime and insecurity arises the need to implement an oriented policing for solving problems, for the shared responsibility and for the citizen participation in security, allowing the welfare and tranquility within the population – the community policing. To this end, the GNR directs a proactive role which allows the increase of the persons’ sense of security as a result of an increased patrol intensity and visibility. This study aims to evaluate the degree of insecurity felt by the population regarding the shutdown of Guarda Nacional Republicana police station in Venda Nova, resulting in a set of research questions and hypotheses, using for this the hypothetical- deductive method and a quantitative investigation. Therefore, the relevant concepts for the purposes of framing and understanding of the subject under study were first operated, having then proceeded to the processing of data resulting from the questionnaire delivered to the population affected by the shutdown of the station, in order to achieve the objective of this work and to respond to the above mentioned problem, which is comprised in the conclusions and recommendations. In conclusion , this study contemplates a location with a predominance of the female, elderly, with fewer years of schooling population, with more married people and more workers for others and retirees/pensioners. From the created questions in order to relate the components of the sense of insecurity (fear of crime, victimization and behavioral component), it is concluded that sex, age and employment status showed influence in the sense of insecurity, which did not applied to the educational attainment of the population studied. This population reveals concerns with the closure of the GNR’s station, highlighting the greater distance that now tears them apart

Análise do impacto da estrutura organizacional de dois hospitais públicos portugueses na execução dos seus objectivos, através da percepção dos seus colaboradores

O objetivo deste trabalho de investigação é o de procurar compreender o impacto da estrutura organizacional de dois hospitais públicos portugueses com diferentes figuras jurídicas, na execução dos seus objetivos, através da perceção dos seus colaboradores. De modo a atingirmos o nosso objetivo, recorremos à metodologia do estudo de caso, efetuado a cada um dos hospitais escolhidos. O principal instrumento de recolha de dados é o questionário, efetuado a uma população que é constituída por uma amostra aleatória simples e estratificada em classes de cada um dos hospitais. Para além de não terem sido encontradas diferenças significativas, nas áreas analisadas, entre os dois hospitais, este estudo revelou-nos ainda que a sua estrutura organizacional deve ser mais orgânica, no sentido de uma estrutura matricial, mantendo, no entanto, a parte burocrática que advêm da elevada profissionalização do seu pessoal e os principais mecanismos de coordenação. Este trabalho pretende dar um contributo no conhecimento da forma como os gestores dos hospitais podem controlar e modificar a estrutura e o desenho da organização e de que forma essas modificações podem vir a influenciar a execução dos seus objetivos. ABSCTRAT: The purpose of this research work is to seek to understand the organizational structure’s impact of two portuguese public hospitals, with different legal forms, in the implementation of their objectives through its collaborators' perception. ln order to achieve our purpose, we have used the case study methodology performed in each one of the chosen hospitals. The main instrument for data collection is the questionnaire, made to a population consisting of a simple and stratified into classes random sample from each one of the hospitals. Besides not having been found any significant differences between the two hospitals, this study has also revealed to us that its organizational structure should be more organic, towards a matrix structure, although maintaining the bureaucratic part arising from the high professionalization of its personnel and the main coordination mechanisms. This work aims to contribute to the knowledge of how hospital managers can control and modify the organization's structure and design and how those modifications may come to influence the implementation of their objectives