Assessment of IT Infrastructures: A Model Driven Approach

Several approaches to evaluate IT infrastructure architectures have been proposed, mainly by supplier and consulting firms. However, they do not have a unified approach of these architectures where all stakeholders can cement the decision-making process, thus facilitating comparability as well as the verification of best practices adoption. The main goal of this dissertation is the proposal of a model-based approach to mitigate this problem. A metamodel named SDM (System Definition Model) and expressed with the UML (Unified Modeling Language) is used to represent structural and operational knowledge on the infrastructures. This metamodel is automatically instantiated through the capture of infrastructures configurations of existing distributed architectures, using a proprietary tool and a transformation tool that was built in the scope of this dissertation. The quantitative evaluation is performed using the M2DM (Meta-Model Driven Measurement) approach that uses OCL (Object Constraint Language) to formulate the required metrics. This proposal is expected to increase the understandability of IT infrastructures by all stakeholders (IT architects, application developers, testers, operators and maintenance teams) as well as to allow expressing their strategies of management and evolution. To illustrate the use of the proposed approach, we assess the complexity of some real cases in the diachronic and synchronic perspective

A Pattern-Based Approach to Scaffold the IT Infrastructure Design Process

Context. The design of Information Technology (IT) infrastructures is a challenging task since it implies proficiency in several areas that are rarely mastered by a single person, thus raising communication problems among those in charge of conceiving, deploying, operating and maintaining/managing them. Most IT infrastructure designs are based on proprietary models, known as blueprints or product-oriented architectures, defined by vendors to facilitate the configuration of a particular solution, based upon their services and products portfolio. Existing blueprints can be facilitators in the design of solutions for a particular vendor or technology. However, since organizations may have infrastructure components from multiple vendors, the use of blueprints aligned with commercial product(s) may cause integration problems among these components and can lead to vendor lock-in. Additionally, these blueprints have a short lifecycle, due to their association with product version(s) or a specific technology, which hampers their usage as a tool for the reuse of IT infrastructure knowledge. Objectives. The objectives of this dissertation are (i) to mitigate the inability to reuse knowledge in terms of best practices in the design of IT infrastructures and, (ii) to simplify the usage of this knowledge, making the IT infrastructure designs simpler, quicker and better documented, while facilitating the integration of components from different vendors and minimizing the communication problems between teams. Method. We conducted an online survey and performed a systematic literature review to support the state of the art and to provide evidence that this research was relevant and had not been conducted before. A model-driven approach was also used for the formalization and empirical validation of well-formedness rules to enhance the overall process of designing IT infrastructures. To simplify and support the design process, a modeling tool, including its abstract and concrete syntaxes was also extended to include the main contributions of this dissertation. Results. We obtained 123 responses to the online survey. Their majority were from people with more than 15 years experience with IT infrastructures. The respondents confirmed our claims regarding the lack of formality and documentation problems on knowledge transfer and only 19% considered that their current practices to represent IT Infrastructures are efficient. A language for modeling IT Infrastructures including an abstract and concrete syntax is proposed to address the problem of informality in their design. A catalog of IT Infrastructure patterns is also proposed to allow expressing best practices in their design. The modeling tool was also evaluated and according to 84% of the respondents, this approach decreases the effort associated with IT infrastructure design and 89% considered that the use of a repository with infrastructure patterns, will help to improve the overall quality of IT infrastructures representations. A controlled experiment was also performed to assess the effectiveness of both the proposed language and the pattern-based IT infrastructure design process supported by the tool. Conclusion. With this work, we contribute to improve the current state of the art in the design of IT infrastructures replacing the ad-hoc methods with more formal ones to address the problems of ambiguity, traceability and documentation, among others, that characterize most of IT infrastructure representations. Categories and Subject Descriptors:C.0 [Computer Systems Organization]: System architecture; D.2.10 [Software Engineering]: Design-Methodologies; D.2.11 [Software Engineering]: Software Architectures-Patterns

Atomic structure calculations in lanthanide ions relevant to kilonovae

Tese de mestrado, Física (Física Nuclear e Partículas) Universidade de Lisboa, Faculdade de Ciências, 2021The present dissertation concerns atomic structure calculations for lanthanide and actinide ions that are significant to kilonovae modeling of the ejecta spectra. In particular, calculations for Nd III and U III, two representative rare-earth ions, were achieved. Therefore, in this work we try to bridge the gap created by the lack of atomic structure calculations f-block ions available in the literature, while also providing valuable insight for future calculations. We concentrated on level energies and oscillator strength calculations for electric dipole transitions (E1) since these are the most critical atomic parameters for simulating the flux of kilonovae in Local Thermodinamical Equilibrium (LTE). We mainly use the publicly accessible Flexible Atomic Code (FAC) for the computations, which employs a Relativistic Configuration Interaction (RCI) method. Not only that, but we compare our results to those obtained using a Multi-configuration Dirac-Fock (MCDF) method as well as to available computational and experimental data. We demonstrated that discrepancies in the opacity spectra of Nd III across various calculations are higher at the ultraviolet and visible wavelengths. At longer wavelengths the sensitivity of the opacity with the accuracy of the calculations seems to decrease. Additionally, we showed the opacity of U III to be about an order of magnitude higher than the opacity of Nd III due to a higher density of levels of the actinide. In general, we anticipate this feature of the spectrum to extend for more lanthanide-actinide pairs and, therefore, that the opacity of actinides to have a measurable impact in the luminosity of kilonovae

Práticas de manejo no desenvolvimento vegetativo, produtivo e qualidade de frutos da amoreira-preta (Rubus sp)

TCC (graduação)- Universidade Federal de Santa Catarina. Campus Curitibanos. Agronomia.A amoreira-preta é uma espécie rústica, com boa capacidade produtiva e, seus frutos apresentam propriedades antioxidantes benéficas a saúde humana. Apesar de ter sido introduzida no Brasil na década de 70, são poucos os trabalhos relacionados as práticas de manejo. Nesse contexto o objetivo do trabalho foi avaliar o desenvolvimento vegetativo, produtivo e qualidade de frutos da amoreira-preta em função de diferentes práticas de manejo. Os experimentos foram conduzidos na fazenda experimental da UFSC, Curitibanos SC. No experimento 1 avaliou-se os genótipos (Xavante e Black 145) em função de doses de ácido giberélico (AG3). O delineamento experimental foi em blocos casualizados, em um fatorial 2x2, ou seja, dois genótipos e duas doses de ácido giberélico. Com três repetições e duas plantas por repetição. No experimento 2 foi avaliado tipos de poda (longa e curta), para a cultivar Xingu. No experimento 3 foi avaliado o tempo de permanência dos frutos no pomar e tempo de armazenamento pós-colheita. O delineamento do pomar foi em blocos ao acaso, com três repetições, cada uma composta de cinco plantas. Por fim no experimento 4 avaliou a qualidade de suco integral. O delineamento foi o inteiramente casualizado tendo três tipos de suco e três tempos de armazenamento. Utilizou-se três repetições e três garrafa por repetição. As avaliações consistiram no desenvolvimento vegetativo, produção e de qualidade de fruto: sólidos solúveis totais (SST), acidez titulável total (ATT), relação SST/ATT e pH do suco. O AG3 afetou somente o pH do suco do fruto. O tipo de poda da amoreira-preta não afetou na produtividade. Os tempos de permanência dos frutos no campo não afetaram a ATT, exceto aos 21 dias de armazenamento. Durante o armazenamento as frutas retiradas imediatamente do pomar apresentaram resposta significativa durante os períodos avaliados, atingido em 10,11 dias o menor valor de ATT. Para o pH do suco em frutos colhidos e deixados no campo por mais tempo no pomar foi modificado durante o período de armazenamento. Para a qualidade do suco integral caseiro de amora-preta, observou-se valor mais elevado para ATT do suco integral de amora-preta em relação ao suco misto de amora-preta + maçã e do suco de maçã. O pH do suco integral durante o armazenamento estabilizou. Para os experimentos constatou a partir dos resultados, que a utilização de AG3 não influenciou na qualidade dos frutos. Em relação aos tipos de poda não afetou na produtividade. E ainda não foi possível identificar com precisão o período de armazenamento dos frutos. Por fim o experimento com diferentes tipos de sucos foi satisfatório, pois permite a mistura de fruta melhorando a qualidade.The blackberry is a rustic species, with good productive capacity and its fruits have antioxidant properties that are beneficial to human health. Despite having been introduced in Brazil in the 70s, there are few works related to management practices. In this context, the objective of the work was to evaluate the vegetative development, production and quality of blackberry fruits as a function of different management practices. The experiments were carried out at the experimental farm at UFSC, Curitibanos SC. In experiment 1, the genotypes (Xavante and Black 145) were evaluated as a function of doses of gibberellic acid (AG3). The experimental design was in randomized blocks, in a 2x2 factorial, that is, two genotypes and two doses of gibberellic acid. With three repetitions and two plants per repetition. In experiment 2, types of pruning (long and short) were evaluated for the Xingu cultivar. In experiment 3, the permanence time of the fruits in the orchard and post-harvest storage time were evaluated. The orchard design was randomized blocks, with three replications, each consisting of five plants. Finally, in experiment 4, the quality of whole juice was evaluated. The design was completely randomized with three types of juice and three storage times. Three repetitions and three bottles per repetition were used. The evaluations consisted of vegetative development, production and fruit quality: total soluble solids (TSS), total titratable acidity (TT), TSS/ATT ratio and juice pH. O productivity. The permanence times of the fruits in the field did not affect the ATT, except at 21 days of storage. During storage, the fruits removed immediately from the orchard showed a significant response during the evaluated periods, reaching the lowest ATT value in 10.11 days. For the pH of the juice in fruits harvested and left in the field for a longer time in the orchard, it was modified during the storage period. For the quality of homemade whole blackberry juice, a higher value for ATT of whole blackberry juice was observed in relation to mixed blackberry + apple juice and apple juice. The pH of the whole juice during storage stabilized. For the experiments, it was found from the results that the use of AG3 did not influence the quality of the fruits. Regarding the types of pruning, it did not affect productivity. And it was still not possible to accurately identify the storage period of the fruits. Finally, the experiment with different types of juices was satisfactory, as it allows the mixing of fruit, improving quality

Wearable textile elongation sensor

This work shows a developed wearable elongation sensor based on an optical fiber. The presented approach to sew a fiber optic into a lycra textile enables the modulation of light amplitude in respect to textile strain. This apparatus in combination with small-size instrumentation enables the development of a wearable textile garment capable of monitoring and acquiring strain data, and send it wirelessly to a base station. The light amplitude increases with the increment of textile strain. The output voltage remains stable over time for the resting and maximum textile strain position

Aspectos antropométricos e desempenho físico dos policiais do Grupamento de Ações Táticas Especiais - GATE da Polícia Militar do Estado da Paraíba

Over the last few years there has been a growing interest in studies related to healthy living habits, where it is essential for the population to develop these habits linked to lifestyle changes in relation to food, sports and physical activities in general. In this way, it becomes essential to the police officers' concern with their physical condition to perform their daily duties in the course of their service, providing satisfactory answers to society in the performance of their duties. The present study aimed to evaluate the anthropometric aspects and the physical performance of the components of the Special Tactical Actions Group (GATE) of the PMPB. It is a descriptive research, with transversal character and quantitative approach. The sample consisted of 26 male police officers and the following tests were performed: body mass index (BMI), waist hip ratio (WHR), localized muscular resistance (LRM), abdominal and limb resistance flexibility in (cm) in the sit and reach test. Data analysis was performed using SPSS software version 21.0. A descriptive analysis of the data was performed using the frequency distribution test to classify variables of health indicators and physical performance. It was verified that 61.5% of the policemen evaluated were overweight and when the WHR was evaluated, 42% had a moderate cardiac risk and 30.8% had a high cardiac risk. However, for the physical performance variables, it was verified by means of abdominal RML tests (69.2%), arm RML test (92.3%), that the police are in excellent condition according to the tables found in the literature, already in the flexibility test it was observed that the majority of police officers (61.5%) would be on average in relation to reference tables provided by the literature. It is concluded that it is imperative that GATE officers have exercise routines to maintain excellent or above average levels of localized muscular endurance and flexibility and to reduce the amount of visceral fat to reduce the risk of heart disease and can perform their daily duties in the course of their service by providing satisfactory responses to society.No decorrer dos últimos anos há um crescente interesse pelos estudos relacionados a hábitos de vida saudável, onde é imprescindível para população o desenvolvimento desses hábitos ligados a mudança do estilo de vida com relação a alimentação, pratica de esportes e atividades físicas em geral. Desta forma, se torna imprescindível à preocupação por parte dos policias com sua condição física para desempenhar suas funções diárias no decorrer do seu serviço prestando umas respostas satisfatórias a sociedade no desempenho de suas funções. O presente estudo objetivou avaliar os aspectos antropométricos e o desempenho físico dos componentes do grupamento de ações táticas especiais (GATE) da PMPB. Trata-se de uma pesquisa descritiva, com caráter transversal e abordagem quantitativa. A amostra foi composta por 26 policiais do gênero masculino e para a coleta de dados realizou-se os seguintes testes: o índice de massa corporal (IMC), relação cintura quadril (RCQ), resistência muscular localizada (RML), abdominal e de membros superiores, flexibilidade em (cm) no teste de sentar e alcançar. A análise dos dados foi realizada por meio do programa SPSS versão 21.0. Realizou-se uma análise descritiva dos dados por meio do teste de distribuição de frequência para classificação das variáveis de indicadores de saúde e de desempenho físico. Verificou-se que 61,5% dos policiais avaliados estariam com sobrepeso e quando avaliou-se a RCQ observou-se que 42% estariam com um risco cardíaco moderado e 30,8% com alto risco cardíaco. No entanto, para as variáveis do desempenho físico verificou-se por meio dos testes de RML abdominal (69,2%), teste de RML de braço (92,3%) que os policiais estão com um condicionamento excelente de acordo com as tabelas de referência encontrados na literatura, já no teste de flexibilidade observou-se que a maioria dos policiais (61,5%) estariam na média em relação a tabelas de referência fornecidas pela literatura. Conclui-se que é imprescindível que os policiais do GATE tenham rotinas de prática de exercício físico para que mantenham os níveis excelentes ou acima da média na resistência muscular localizada e flexibilidade e diminuam a quantidade de gordura visceral para que reduzam o risco de doenças cardíacas e possam executar suas funções diárias no decorrer do seu serviço prestando respostas satisfatórias a sociedade

Práticas de Marketing Digital: Relatório de Estágio na empresa Swonkie

O presente relatório insere-se no âmbito da conclusão do Mestrado em Marketing Digital, do Instituto Superior de Contabilidade e Administração do Porto. O relatório foi elaborado com o principal objetivo de descrever as atividades que foram desenvolvidas durante o estágio curricular na empresa Swonkie. O estágio curricular foi realizado nos escritórios da empresa, situados em Vila Nova de Famalicão, tendo início no dia 14 de dezembro de 2021 e término a 22 de abril de 2022, completando a duração de 400 horas. Durante este período, foram aplicados os conhecimentos adquiridos ao longo do Mestrado em Marketing Digital em contexto de trabalho. Este estágio, sem dúvida, permitiu-me adquirir um conjunto de competências, garantindo-me a autonomia e a confiança necessária para facilitar a minha entrada no mercado de trabalho. Este documento está dividido em três capítulos principais. No primeiro capítulo é realizada uma introdução teórica sobre as diferentes técnicas de marketing digital, servindo estas como bases para sustentar o desenvolvimento das tarefas propostas durante a elaboração do estágio curricular. No segundo capítulo é apresentada a entidade acolhedora, terminando, no último capítulo, com a descrição das atividades desenvolvidas ao longo do estágio.This report is part of the conclusion of the Master’s in Digital Marketing, from the Instituto Superior de Contabilidade e Administração do Porto. This was developed with the main objective of describing the activities that were developed during the curricular internship at the Swonkie company. The curricular internship was carried out at the offices of the company, located in Vila Nova de Famalicão. It started on December 14, 2021 and ended on April 22, 2022, completing the duration of 400 hours. During this period, the knowledge acquired during the Master’s in Digital Marketing was applied in a work context. This internship undoubtedly allowed me to acquire a certain set of skills, guaranteeing me the necessary autonomy and confidence to facilitate my entry into the labour market. This document is divided into three main chapters. In the first chapter, the objectives for the curricular internship are defined, moving on to a theoretical introduction on different digital marketing techniques, which serve as bases to support the development of the tasks during the curricular internship. In the secound chapter is found the presentation of the host entity, ending with the description of the activities developed during the internship

Análise de cargos e salários: um estudo de caso da Don Sebastian

Monografia que visa apresentar um estudo de caso, cujo objeto é uma empresa no segmento de vestuário. A empresa foi matéria de estudo por meio de uma variável espécifica entre outras que motivaram esta análise, com expectativa de apresentar possíveis soluções e ferramentas que subsidiarão para uma eventual aplicação pela empresa, como parâmetro de tomada de decisão.Os trabalhos foram executados por meio de uma pesquisa interna voltada para o público alvo: todos os funcionários ligados a organização. Onde foram entrevistados por meio de um questionário que possuia questões que mapeava toda empresa e opções que tabuladas ensejaram ao resultado que medisse e avaliasse alguns fatores fundamentais para concluir se era necessário ou não a implantação de um plano de cargos e salários.O tema proposto nesta dissertação foi Análise de Cargos e Salários, justificado pela necessidade de um problema que existia na empresa pesquisada, que corroborou para uma motivação que lencasse resultados que poderiam solucionar tal demanda.Os trabalhos foram realizados com um nível considerado de segurança uma vez que foi avaliado e ponderado por profissionais com experiência na área, o que proporcionou uma dinamização nas atividades devido ao comprometimento em todas as etapas e ensaios, visto que era necessário a apresentação de propostas e soluções que serão evidenciadas nesta monografi

Magnetoresistance of doped silicon

We have performed longitudinal magnetoresistance measurements on heavily n-doped silicon for donor concentrations exceeding the critical value for the metal-non-metal transition. The results are compared to those from a many-body theory where the donor-electrons are assumed to reside at the bottom of the many-valley conduction band of the host. Good qualitative agreement between theory and experiment is obtained.Comment: 7 pages, 8 figure

Metodologia de Intervenção

A presente dissertação aborda o tema da reabilitação de edifícios antigos, fundamentando uma proposta de abordagem metodológica a aplicar nas intervenções em edifícios marcados pelo seu valor patrimonial. Verifica-se nos últimos anos um grande interesse por parte das entidades nacionais em apostar na área da reabilitação de edifícios, devendo-se questionar, no entanto, até que ponto essas mesmas entidades regem a sua atividade dentro dos princípios impostos pelas Cartas Internacionais do Património e legislação existente. A atuação em edifícios antigos protegidos patrimonialmente impõe um grau de exigência mais acentuado, em particular a nível técnico, obrigando os promotores a implementação de estratégias de intervenção cujo objetivo principal é preservar e salvaguardar o edifício original para as gerações seguintes. Sendo um tema de aprendizagem exigente, este trabalho tem como objetivo a definição de um conjunto de princípios de caráter teórico e técnico, que visam compreender a tipificação construtiva portuguesa nos edifícios antigos, análise de anomalias e ensaios de caracterização dos materiais, ultimando o estudo realizado numa metodologia de intervenção que leva em consideração todos os aspetos relevantes dentro do assunto.This dissertation presents the theme of the rehabilitation of old buildings, based on a proposal of a methodological approach to be applied in the interventions in buildings marked by their heritage value. In recent years there has been a great interest from national entities on the rehabilitation of buildings, however, it is necessary to question the extent to which these same entities govern their activity within the principles imposed by the International Charters and existing legislation. Acting in heritage protected old buildings imposes a greater difficulty and exigency, in particular at the technical level, obliging the promoters to implement intervention strategies whose main objective is to preserve the original building for the next generations. Being a demanding learning subject, this work has as its objective the definition of a set of principles of theoretical and technical character, aiming to understand the typical aspects of portuguese construction in the old buildings, analysis of anomalies and characterization tests of the materials, finalizing the study carried out on an intervention methodology that takes into account all relevant aspects of the subject