Ground truth determination for segmentation of tomographic volumes using interpolation

Dissertação para obtenção do Grau de Mestre em Engenharia Biomédica

Medida do volume da úlcera cutânea na leishmaniosetegumentar

A medida dos diâmetros longitudinal e transverso de uma lesão ulcerada na leishmaniose tegumentar não reflete a profundidade, a qual também tem importância na avaliação da cura. A proposta deste estudo foi avaliar o volume da úlcera leishmaniõtica, através da moldagem seriada, antes e após o tratamento. A moldagem da cavidade, apôs assepsia local com água e sabão, foi feita com material plástico gelatinoso ã base de sílica, alginato de potássio, sulfato de cálcio e óxido de magnésio, comercializado sob o nome de jeltrate® (Dentsply Laboratory). Dissolveu-se 9,5g de jeltrate® em 20ml de água e aplicou-se o gel sobre a úlcera, o qual se solidificou em cinco minutos. Este molde foi então preenchido com acrílico autopolimerizante e o seu volume mensurado através do peso, usando-se balança analítica (Técnica 1) ou através do deslocamento da água, aplicando o princípio de Arquimedes (Técnica 2). Mostramos os dados de um estudo i-ealizado numa área de transmissão de Leishmania (Viannia) braziliensis onde 20 pacientes foram tratados com três diferentes esquemas: sete pacientes receberam isotianato depentamidina, sete receberam sulfato de aminosidine e seis antimoniato de meglumina. Os resultados mostram em todos os pacientes redução uniforme do volume das úlceras melhor avaliada por qualquer uvta das duas técnicas utilizadas. Em relação aos esquemas terapêuticos houve diferença estatística significante entre os três esquemas usando o teste T de student, o qual mostrou que o sulfato de aminosidine produziu maior redução de volume que os outros compostos. Moldagens seriadas são registros permanentes e refletem melhor a cura clínica. Concluímos que a medida da lesão ulcerada é útil na avaliação terapêutica como procedimento prático, barato e que pode ser utilizado em estudos de campo.

Utilização de cartas de controlo para monitorização em tempo real da qualidade da água numa rede de distribuição

Dissertação para obtenção do Grau de Mestre em Engenharia e Gestão Industrial

Healing replicas in a software component replication system

Dissertação para obtenção do Grau de Mestre em Engenharia Informática

Business plan analysis of a Brazilian software company

A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics

How reporting and controlling systems can be effectively designed to support the decision-making process: The case of a Software SME

A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics

Software for pattern recognition of the larvae of Aedes aegypti and Aedes albopictus

Software for pattern recognition of the larvae of mosquitoes Aedes aegypti and Aedes albopictus, biological vectors of dengue and yellow fever, has been developed. Rapid field identification of larva using a digital camera linked to a laptop computer equipped with this software may greatly help prevention campaigns.

O Romance da raposa: uma edição anotada para crianças

Trabalho de Projeto apresentado para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Edição de Texto

Experimental high-throughput adsorption unit for multi-evaluation of adsorbents for gas capture, storage and separation applications

Dissertação para obtenção do grau de Mestre em Engenharia Química e Bioquímica

Spectrum sensing through software defined radio

Dissertação apresentada para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores, pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia

Ressonância magnética nuclear com recurso a um transreceptor rádio controlado por software

Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores

Formação em Gestão, Tradução, Localização e Testes de Projetos de Software

Relatório de Estágio apresentado para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Tradução – Especialização em Inglês

How enterprise 2,0 firms take advantage of emergent social software platforms to manage knowledge

This research aims to provide a better understanding on how firms stimulate knowledge sharing through the utilization of collaboration tools, in particular Emergent Social Software Platforms (ESSPs). It focuses on the distinctive applications of ESSPs and on the initiatives contributing to maximize its advantages. In the first part of the research, I have itemized all types of existing collaboration tools and classify them in different categories according to their capabilities, objectives and according to their faculty for promoting knowledge sharing. In the second part, and based on an exploratory case study at Cisco Systems, I have identified the main applications of an existing enterprise social software platform named Webex Social. By combining a qualitative and quantitative approach, as well as combining data collected from survey’s results and from the analysis of the company’s documents, I am expecting to maximize the outcome of this investigation and reduce the risk of bias. Although effects cannot be universalized based on one single case study, some utilization patterns have been underlined from the data collected and potential trends in managing knowledge have been observed. The results of the research have also enabled identifying most of the constraints experienced by the users of the firm’s social software platform. Utterly, this research should provide a primary framework for firms planning to create or implement a social software platform and for firms willing to increase adoption levels and to promote the overall participation of users. It highlights the common traps that should be avoided by developers when designing a social software platform and the capabilities that it should inherently carry to support an effective knowledge management strategy.

Hole cleaning performance monitoring during the drilling of directional wells

During drilling operation, cuttings are produced downhole and must be removed to avoid issues which can lead to Non Productive Time (NPT). Most of stuck pipe and then Bottom-Hole Assembly (BHA) lost events are hole cleaned related. There are many parameters which help determine hole cleaning conditions, but a proper selection of the key parameters will facilitate monitoring hole cleaning conditions and interventions. The aim of Hole Cleaning Monitoring is to keep track of borehole conditions including hole cleaning efficiency and wellbore stability issues during drilling operations. Adequate hole cleaning is the one of the main concerns in the underbalanced drilling operations especially for directional and horizontal wells. This dissertation addresses some hole cleaning fundamentals which will act as the basis for recommendation practice during drilling operations. Understand how parameters such as Flowrate, Rotation per Minute (RPM), Rate of Penetration (ROP) and Mud Weight are useful to improve the hole cleaning performance and how Equivalent Circulate Density (ECD), Torque & Drag (T&D) and Cuttings Volumes coming from downhole help to indicate how clean and stable the well is. For case study, hole cleaning performance or cuttings volume removal monitoring, will be based on real-time measurements of the cuttings volume removal from downhole at certain time, taking into account Flowrate, RPM, ROP and Drilling fluid or Mud properties, and then will be plotted and compared to the volume being drilled expected. ECD monitoring will dictate hole stability conditions and T&D and Cuttings Volume coming from downhole monitoring will dictate how clean the well is. T&D Modeling Software provide theoretical calculated T&D trends which will be plotted and compared to the real-time measurements. It will use the measured hookloads to perform a back-calculation of friction factors along the wellbore.