Test in a beam of large-area Micromegas chambers for sampling calorimetry

Application of Micromegas for sampling calorimetry puts specific constraints on the design and performance of this gaseous detector. In particular, uniform and linear response, low noise and stability against high ionisation density deposits are prerequisites to achieving good energy resolution. A Micromegas-based hadronic calorimeter was proposed for an application at a future linear collider experiment and three technologically advanced prototypes of 1$\times$1 m$^{2}$ were constructed. Their merits relative to the above-mentioned criteria are discussed on the basis of measurements performed at the CERN SPS test-beam facility

Correlation between n-3 polyunsaturated fatty acids consumption and BDNF peripheral levels in adolescents

Esse artigo trata de analisar as formas tradicionais de transmissão dos saberes presentes no âmbito da cultura popular. A partir dessa abordagem, trazemos as experiências educacionais existentes no universo da capoeira angola uma importante manifestação da cultura afro-brasileira para uma reflexão sobre o papel dos mestres nesse processo. A memória, a ancestralidade, a ritualidade e a temporalidade são categorias fundamentais para compreendermos as relações de educação presentes nesse universo

MICROMEGAS chambers for hadronic calorimetry at a future linear collider

Prototypes of MICROMEGAS chambers, using bulk technology and analog readout, with 1x1cm2 readout segmentation have been built and tested. Measurements in Ar/iC4H10 (95/5) and Ar/CO2 (80/20) are reported. The dependency of the prototypes gas gain versus pressure, gas temperature and amplification gap thickness variations has been measured with an 55Fe source and a method for temperature and pressure correction of data is presented. A stack of four chambers has been tested in 200GeV/c and 7GeV/c muon and pion beams respectively. Measurements of response uniformity, detection efficiency and hit multiplicity are reported. A bulk MICROMEGAS prototype with embedded digital readout electronics has been assembled and tested. The chamber layout and first results are presented

Construction and test of a 1×1 m2 Micromegas chamber for sampling hadron calorimetry at future lepton colliders

Equipe MicromegasSampling calorimeters can be finely segmented and used to detect showers with high spatial resolution. This imaging power can be exploited at future linear collider experiments where the measurement of jet energy by a Particle flow method requires optimal use of tracking and calorimeter information. Gaseous detectors can achieve high granularity and a hadron sampling calorimeter using Micromegas chambers as active elements is considered in this paper. Compared to traditional detectors using wires or resistive plates, Micromegas is free of space charge effects and could therefore show superior calorimetric performance. To test this concept, a prototype of 1×1 m2 equipped with 9216 readout pads of 1×1 cm2 has been built. Its technical and basic operational characteristics are reported

ResViT: Residual vision transformers for multi-modal medical image synthesis

Multi-modal imaging is a key healthcare technology that is often underutilized due to costs associated with multiple separate scans. This limitation yields the need for synthesis of unacquired modalities from the subset of available modalities. In recent years, generative adversarial network (GAN) models with superior depiction of structural details have been established as state-of-the-art in numerous medical image synthesis tasks. GANs are characteristically based on convolutional neural network (CNN) backbones that perform local processing with compact filters. This inductive bias in turn compromises learning of contextual features. Here, we propose a novel generative adversarial approach for medical image synthesis, ResViT, to combine local precision of convolution operators with contextual sensitivity of vision transformers. ResViT employs a central bottleneck comprising novel aggregated residual transformer (ART) blocks that synergistically combine convolutional and transformer modules. Comprehensive demonstrations are performed for synthesizing missing sequences in multi-contrast MRI, and CT images from MRI. Our results indicate superiority of ResViT against competing methods in terms of qualitative observations and quantitative metrics

Strategies for increasing urban cycling - The case of Gothenburg

As the world is experiencing a fast-paced urbanisation, the demand for urban mobility is increasing. This raises the question of how to organise a functioning transportation system. The elements of such a system include a combination of public transportation services, active mobility solutions such as walking and cycling, and personal vehicles. To assess the performance of a transport system, ecological, economical, societal, and well-being criteria can be applied. The purpose of this thesis is to provide guidelines for scaling up the modal share of cycling in Gothenburg area. To pursue this goal, the impacts of cycling regarding the aforementioned criteria are investigated and a framework to increase its modal share is provided. This is supported by the following research questions: • In which cases does cycling pose an advantage for the users over other modes of transportation? • What are the potential barriers and drivers for scaling up cycling? – Where are they located in the multilevel design model and how do they influence each other? • Which initiatives need to be taken in order to support the intention of upscaling cycling? Under the methodological umbrella of backcasting and the multilevel design model, the following research activities are executed; literature review on urban transportation, quantitative analysis of travel statistics, interviews with end users who cycle as their main mode of transportation (or are considering it), and lastly a co-creative solution development with mobility professionals. The results of the research activities include the criteria for future urban mobility, impacts of cycling on the aforementioned criteria, the extents of potential target groups; barriers and drivers for a transition towards cycling as part of active mobility; as well as a plan providing concrete actions to be performed in order to ensure this process. The results are designed to assist the implementation of the Gothenburg cycling strategy for 2025. In conclusion, three different areas need to be looked into to increase the number of cyclists and the modal share of cycling: Firstly, focusing on communicating the advantages of cycling, in particular the positive impacts on the physical and mental well-being. Secondly, lowering the entry threshold for noncyclists in order to enable them to experience the positive effects and support a shift from other modes of transportation towards cycling. Last but not least, making sure that cycling remains convenient for those who are using this mode of transportation by providing suitable infrastructure

Uluslararası fidic sözleşmelerinde tahkim hususunun incelenmesi ve bir kavramsal model önerisi

06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.İnşaat sektörü geniş istihdam ortamı yaratması, milli gelire önemli oranda katkı sağlaması ve sürükleyici-lokomotif sektör olması açılarından, ülke ekonomilerinde önemli ve kritik bir aktördür. Aynı zamanda ulusal ve uluslararası arenada sektörün rekabetçi bir ortam içerisinde çalışması, büyük çaplı altyapı ve üstyapı işlerinde teknik birikim, finansman, uluslararası deneyim ve teknolojik imkânların bir araya getirilmesini elzem hale getirmekte ve bunun sonucu olarak farklı milliyetteki tarafların bir arada çalışmasını zorunlu kılmaktadır.Tarafların farklı satın alma prosedürlerine, teknik ve hukuki altyapıya sahip olmaları, uzun sürede gerçekleşen ve teknik özellikleri fazla büyük inşaat işlerinde, uzman kurum ve kuruluşlarca hazırlanan standart inşaat sözleşmelerinin hazırlanmasına ve kullanılmasına neden olmuştur. Bu sayede taraflar açısından sözleşmelerde bir denge ve eşitlik kurularak, teknik ve hukuki alanlarda görüş birliği sağlanması, olası uyuşmazlıklarda riskin asgariye indirilmesi ve çözümünde ortak dil oluşturulması amaçlanmıştır.Uluslararası arenada Fidic tarafından hazırlanan ve zaman içinde günün kurallarına göre revize edilen standart inşaat sözleşmeleri en çok kullanılan ve tercih edilen sözleşmeler olmuştur.Standart Fidic sözleşmelerinde uyuşmazlıkların çözümü üç aşamalı bir çözüm öngörülmüştür. Bu silsile, uyuşmazlığın Uyuşmazlık Çözüm Kurulu-DAB kanalıyla çözümü, bunda uzlaşma sağlanamıyorsa uyuşmazlığın dostane yollarla çözümü ve son olarak tahkim ile uyuşmazlığın çözümü olarak karşımıza çıkmaktadır.Bu tez çalışmasında, üç aşamalı çözümün son basamağını teşkil eden tahkim konusu detaylı olarak ele alınmaktadır.Cause of creating large employment environment, significantly contribution to the national revenue and being immersive-locomotive sector, construction sector is important and critical actor at the countries' economies. At the same time, sector is working in a competitive environment at national and international arena at large-scale infrastructure and superstructure works that requires technical work experience, funding, international experience and technological facilities. That?s all enforces to work together of parties at different nations.Different procurement methods, the complicated nature of construction contracts, and the fact that there are many technical specifications and legal requirements, has led to basing the construction contracts on standard rules in practice.The mostly preferred one among these standard rules is the Fidic contracts which is continuously revised for the actual needs of the sector. At standart forms of Fidic contracts three-step dispute resolution is envisaged; settlement of disputes by the help of DAB(Dispute Resolution Board), if there is no reconciliation in this step resolution by amicable?alternative dispute resolution methods, if no reconciliation and last step settlement by arbitration.In this thesis, subject of arbitration which constitutes the last digit of a three-stage solution is being discussed in detail

Proposta de um modelo para criação de jogos para aprendizagem em ambientes de desenvolvimento de novos produtos

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Produção, Florianópolis, 2017.O desenvolvimento bem-sucedido de novos produtos está diretamente relacionado à aprendizagem. Por isto, funcionários de empresas devem manter-se atualizados, constantemente aprendendo sobre produtos, processos e mercado, para garantir o lançamento de produtos competitivos. Existem diversos meios de aprendizagem utilizados na área de Desenvolvimento de Novos Produtos (DNP) para o ensino de funcionários, incluindo meios de engajamento, como os métodos de Aprendizagem Ativa (AA). O uso de jogos é um meio de aprendizagem ativa. Os jogos motivam, envolvem, são divertidos e as novas gerações estão acostumadas com eles. Contudo, o uso de jogos no ambiente de DNP em empresas ainda carece de estudos. Segundo revisão de literatura, desenvolvida nesta pesquisa, nenhum dos modelos de desenvolvimento de jogos existentes poderia ser aplicado com o fim de difundir práticas no ambiente de DNP de uma empresa. Desta forma, o objetivo deste trabalho foi criar um modelo para desenvolver jogos de ensino que possam ser aplicados em empresas na área de DNP. O modelo foi construído com base nos pressupostos teóricos de jogos e da literatura de AA.Para a construção do modelo, foi necessário identificar os elementos básicos para a formação de jogos, definir a estrutura básica do jogo, definir o sequenciamento das etapas para o desenvolvimento de jogos e estabelecer os critérios de medição de desempenho do jogo. O modelo foi refinado por meio do desenvolvimento de jogos pilotos. Por fim, o modelo final foi utilizado para o desenvolvimento de um jogo aplicado em uma equipe de DNP de uma empresa multinacional. Os resultados indicaram que o jogo foi bem-sucedido, pois observou-se que os participantes ficaram atentos, tiveram êxito na execução das tarefas, concordaram sobre a importância do assunto aprendido, consideraram útil o que aprenderam, e afirmaram que o jogo foi claro e simples de ser jogado. Os estudos futuros sugeridos são o desenvolvimento de jogo com interfaces gráficas para a eliminação do facilitador do jogo, o desenvolvimento de um jogo para uso com interface de diferentes equipes e uma avaliação estruturada do resultado do jogo após meses do treinamento dado.Abstract : The successful development of new products is directly related to learning. Therefore, company employees must keep up-to-date, which means, they may be constantly learning about products, processes and the market, to ensure the launch of competitive products. There are several learning ways used in the area of New Product Development (NPD) for teaching employees, including means of engagement, such as Active Learning (AL) methods. The use of games is a means of active learning. Games motivate, involve and they are fun, besides that new generations are used to them. However, the use of games in the NPD environment in companies still needs to be studied. According to a literature review, developed in this research, none of the existing game development models could be applied in order to disseminate practices in a company's DNP environment. In this way, this work aimed to create a model to develop educational games that can be applied in companies in the area of DNP.The model was constructed based on the theoretical assumptions of games and AL literature. For the construction of the model, it was necessary to identify the basic elements for games formation, to define the basic structure of the game, to define the sequencing of the stages for the development of games and to establish the criteria for game performance measuring. The model was refined through the development of pilots. Finally, the final model was used for the development of a game applied in a DNP team of a multinational company. The results indicated that the game was successful, because it was observed that the participants were attentive, they were successful in the execution of the tasks purposed, they agreed on the importance of the subject learned, they considered that what they´ve learned were useful, and they affirmed the game was clear and simple to play. Future studies are suggested for development of the game with graphical interfaces for elimination of the game facilitator, development of a game for use with interface of different teams and a structured evaluation of the outcome of the game after months of the given training

Experimental Results and Analytical Predictions of EHL Film Thickness

In this work, we consider several types of lubricants - including non-Newtonian fluids - that were studied under various operating conditions leading us to explore a wide range of dimensionless parameters. The experimental results are compared with predictions given by the usual analytical EHL relationships and by more recently developed models. This broad comparison conducted with particular emphasis on minimum film thickness (hm) showed a fair agreement between experimental data and a few predictions including some obtained from extended models. Commonly used elasto-hydrodynamic lubrication (EHL) models did not systematically gave accurate hm estimation, whereas minimum film thickness not only is a yield value but also serves as a key parameter in estimating lubrication regimes

Estudo do potencial eólico e previsão de ventos para geração de eletricidade em Santa Catarina

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia MecânicaO trabalho é dividido em duas partes, na primeira delas o objetivo é a análise das principais características dos ventos em seis localidades do Estado de Santa Catarina visando a determinar o potencial eólico para geração de eletricidade, enquanto na segunda parte se faz um estudo sobre previsão de velocidade de ventos e geração eólica com base em dados de velocidade de vento gerados pelo modelo meteorológico de meso-escala Eta, do CPTEC / INPE. A primeira parte do trabalho refere-se ao tratamento estatístico dos dados de velocidade de vento, através da distribuição de Weibull, medidos nas estações anemométricas da CELESC (Centrais Elétricas de Santa Catarina S.A.). São determinadas as velocidades médias, a regularidade, a direção preferencial dos ventos, assim como o fator de capacidade do local e a quantidade esperada de energia a ser gerada. Os dados de potência gerada pelos aerogeradores em operação, no Estado, foram comparados aos valores estimados através dos cálculos com as velocidades medidas em campo. Na segunda parte do estudo, os dados previstos pelo modelo Eta do CPTEC / INPE, serviram de base para o treinamento de redes neurais, a partir da comparação com os dados de campo da CELESC, possibilitando uma avaliação da capacidade de previsão de velocidade de vento e de potência para um horizonte de 6h. A questão da previsão de geração elétrica por fonte eólica tornar-se-á de grande importância à medida que aumente a sua participação no balanço energético do país. Os resultados mostram que a técnica de previsão por meio de redes neurais é adequada, apesar de ainda apresentar as limitações decorrentes do escasso banco de dados de velocidade e direção do vento. O estudo sobre o potencial eólico de Santa Catarina indica a existência de localidades com características de ventos adequadas à geração. Dentre as regiões analisadas, destacam-se Laguna e Urubici, que apresentaram valores de fator de capacidade, FC, de 0,40 e 0,34, respectivamente, com velocidades médias anuais em torno de 8 m/s, apesar do baixo valor do fator de forma, k, em torno de 1,8, e Água Doce, com valores de FC em torno de 0,24, velocidade média em torno de 6 m/s e k de 2,4, apresentando resultados satisfatórios para geração de eletricidade. Ainda, nas demais localidades, estimativas feitas com auxílio do programa WAsP mostram que todas apresentam regiões com valores de FC maiores ou iguais a 0,30. A metodologia desenvolvida neste trabalho, embora se restrinja a uma análise de caso para Santa Catarina, poderá ser estendida a todo o país. This study is divided in two parts, in the first one the objective is the analysis of the main wind characteristics for in six places in the State of Santa Catarina aiming to determine the wind power for energy generation, in the second one, a study about wind speed and wind power forecast is made based on CPTEC / INPE Eta mesoscale meteorological model wind speed data. The first part of this study refers to a statistical treatment of wind speed data collected by CELESC, using the Weibull Distribution. The average speeds, regularity, and the main wind direction are determined, as well as capacity factor, FC, of the locations and the estimated power generation potential. In this study, the power generation data collected from the operating wind turbines are also analyzed. These data are compared with the results calculated from the measured wind speeds. In the second part of the study, the predicted data from Eta model, served as a basis for the training of artificial neural networks, through comparison with the measured CELESC data. Their capacity to forecast power generation and wind speed within 6h is evaluated. The wind power forecast will be more important with the growth of the electricity generation by wind power in Brazil. The results show that techniques of forecast by means of neural networks are feasible, although more in-depth studies are limited by the scarse availability of wind speed and direction data. The study about wind potential in the State of Santa Catarina shows that there are areas with wind characteristics for energy generation. Based on the results of this work, the best places in Santa Catarina is Laguna and Urubici with 0.40 and 0.34 for FC values, respectively, and wind velocity near to 8 m/s, despite the low value of Weibull shape factor, k, near to 1.8, and Água Doce with FC values near to 0.24, 6 m/s wind velocity and k factor near to 2.4 show adequate results for electricity generation. In the other places, estimates with WAsP aid show that, there are areas with FC greater than 0.30 in all analyzed places. The method developed in this study will be able to apply in other regions of the country, in spite of being a study perform in the State of Santa Catarina