Study of the electromyographic signal dynamic behavior in Amyotrophic Lateral Sclerosis (ALS)

Amyotrophic Lateral Sclerosis (ALS) is a neurodegenerative disease characterized by motor neurons degeneration, which reduces muscular force, being very difficult to diagnose. Mathematical methods are used in order to analyze the surface electromiographic signal’s dynamic behavior (Fractal Dimension (FD) and Multiscale Entropy (MSE)), evaluate different muscle group’s synchronization (Coherence and Phase Locking Factor (PLF)) and to evaluate the signal’s complexity (Lempel-Ziv (LZ) techniques and Detrended Fluctuation Analysis (DFA)). Surface electromiographic signal acquisitions were performed in upper limb muscles, being the analysis executed for instants of contraction for ipsilateral acquisitions for patients and control groups. Results from LZ, DFA and MSE analysis present capability to distinguish between the patient group and the control group, whereas coherence, PLF and FD algorithms present results very similar for both groups. LZ, DFA and MSE algorithms appear then to be a good measure of corticospinal pathways integrity. A classification algorithm was applied to the results in combination with extracted features from the surface electromiographic signal, with an accuracy percentage higher than 70% for 118 combinations for at least one classifier. The classification results demonstrate capability to distinguish members between patients and control groups. These results can demonstrate a major importance in the disease diagnose, once surface electromyography (sEMG) may be used as an auxiliary diagnose method.

A multiculturalidade na disciplina de educação moral e religiosa católica

Desde sempre que a convivência entre pessoas e grupos de culturas e etnias diferentes se tem revelado difícil, e as grandes e profundas alterações na sociedade europeia têm vindo a alterar um pouco os paradigmas a que estávamos habituados em termos de convivência entre as pessoas, revelando uma sociedade com um tecido cada vez mais multicultural. Assim, torna-se pertinente uma educação que seja marcadamente multicultural. Entendemos que o conceito de multiculturalidade deve estar mais presente, aliás, na forma como se faz e pensa a educação hoje, por isso, é nosso entendimento, que é necessário rever mesmo a génese profunda do ato educativo e tudo o que isso implica na atualidade, pois não é possível pensar a educação e a escola hoje desligando-a da sua realidade multifacetada e multicultural. A disciplina de EMRC (Educação Moral e Religiosa Católica) é uma disciplina que tem já uma longa história de implementação no sistema de ensino português, existindo em quase todas as escolas do Ensino Básico e Secundário, por direito próprio ao abrigo da Concordata celebrada entre o Estado Português e a Santa Sé em 7 Maio de 1940 e ratificada em 18 Maio de 2004. A Disciplina de EMRC encontra-se assim incluída na matriz curricular do nosso sistema de ensino. Uma vez que a implementação da Disciplina de EMRC é da responsabilidade da Igreja Católica e tendo em linha de conta os valores e princípios naturalmente inerentes ao cristianismo, é legítimo supor a pertinência desta disciplina para uma educação e convivência multiculturais. O presente estudo pretendeu investigar o modo como a disciplina de EMRC contribui para uma educação multicultural. Propusemo-nos para isso encontrar, através de uma revisão da literatura, os principais elementos que constituem uma verdadeira educação, e neste sentido, definir a relação entre a escola e a multiculturalidade, e assim, contextualizar a educação multicultural. A tarefa seguinte foi a de comparar o conceito e a realidade da educação multicultural com o programa de EMRC. Procurámos complementar este estudo com a aplicação de um questionário a uma amostra significativa de professores de EMRC da Diocese de Lisboa, instrumento este que foi construído a partir da análise da literatura efetuada e tendo por base, sobretudo, o programa curricular, os manuais da disciplina e outros documentos relevantes para o tema em estudo. Pretendemos aferir o grau de importância dada pelos docentes à educação multicultural através da disciplina de EMRC, pelo menos nas escolas onde se verifique uma grande diversidade étnica. Para consolidar o estudo, foi também realizada uma entrevista a alguns professores e informantes – chave com destaque para a Disciplina. Pretendeu-se ainda investigar o grau de sensibilidade dos professores para uma verdadeira educação multicultural e as limitações encontradas por eles no programa e respetiva prática pedagógica, nomeadamente na sua ação como professores de EMRC e, eventualmente, a formulação de possíveis sugestões.

Transactions in dynamic reactive environments

Most of today’s systems, especially when related to the Web or to multi-agent systems, are not standalone or independent, but are part of a greater ecosystem, where they need to interact with other entities, react to complex changes in the environment, and act both over its own knowledge base and on the external environment itself. Moreover, these systems are clearly not static, but are constantly evolving due to the execution of self updates or external actions. Whenever actions and updates are possible, the need to ensure properties regarding the outcome of performing such actions emerges. Originally purposed in the context of databases, transactions solve this problem by guaranteeing atomicity, consistency, isolation and durability of a special set of actions. However, current transaction solutions fail to guarantee such properties in dynamic environments, since they cannot combine transaction execution with reactive features, or with the execution of actions over domains that the system does not completely control (thus making rolling back a non-viable proposition). In this thesis, we investigate what and how transaction properties can be ensured over these dynamic environments. To achieve this goal, we provide logic-based solutions, based on Transaction Logic, to precisely model and execute transactions in such environments, and where knowledge bases can be defined by arbitrary logic theories.

Tool for spatial and dynamic representation of artistic performances

This proposal aims to explore the use of available technologies for video representation of sets and performers in order to serve as support for composition processes and artistic performer rehearsals, while focusing in representing the performer’s body and its movements, and its relation with objects belonging to the three-dimensional space of their performances. This project’s main goal is to design and develop a system that can spatially represent the performer and its movements, by means of capturing processes and reconstruction using a camera device, as well as enhance the three-dimensional space where the performance occurs by allowing interaction with virtual objects and by adding a video component, either for documentary purposes, or for live performances effects (for example, using video mapping video techniques in captured video or projection during a performance).

DYNAMOD – A dynamic agent based modelling framework for digital businesses

Digital Businesses have become a major driver for economic growth and have seen an explosion of new startups. At the same time, it also includes mature enterprises that have become global giants in a relatively short period of time. Digital Businesses have unique characteristics that make the running and management of a Digital Business much different from traditional offline businesses. Digital businesses respond to online users who are highly interconnected and networked. This enables a rapid flow of word of mouth, at a pace far greater than ever envisioned when dealing with traditional products and services. The relatively low cost of incremental user addition has led to a variety of innovation in pricing of digital products, including various forms of free and freemium pricing models. This thesis explores the unique characteristics and complexities of Digital Businesses and its implications on the design of Digital Business Models and Revenue Models. The thesis proposes an Agent Based Modeling Framework that can be used to develop Simulation Models that simulate the complex dynamics of Digital Businesses and the user interactions between users of a digital product. Such Simulation models can be used for a variety of purposes such as simple forecasting, analysing the impact of market disturbances, analysing the impact of changes in pricing models and optimising the pricing for maximum revenue generation or a balance between growth in usage and revenue generation. These models can be developed for a mature enterprise with a large historical record of user growth rate as well as for early stage enterprises without much historical data. Through three case studies, the thesis demonstrates the applicability of the Framework and its potential applications.

Dynamic delta hedging of autocallables under a discrete rebalancing context

This work tests different delta hedging strategies for two products issued by Banco de Investimento Global in 2012. The work studies the behaviour of the delta and gamma of autocallables and their impact on the results when delta hedging with different rebalancing periods. Given its discontinuous payoff and path dependency, it is suggested the hedging portfolio is rebalanced on a daily basis to better follow market changes. Moreover, a mixed strategy is analysed where time to maturity is used as a criterion to change the rebalancing frequency.

Nestle's dynamic forecasting process: Anticipating risks and opportunities

Nestlé’s Dynamic Forecasting Process: Anticipating Risks and Opportunities This Work Project discusses the Nestlé’s Dynamic Forecasting Process, implemented within the organization as a way of reengineering its performance management concept and processes, so as to make it more flexible and capable to react to volatile business conditions. When stressing the importance of demand planning to reallocate resources and enhance performance, Nescafé Dolce Gusto comes as way of seeking improvements on this forecasts’ accuracy and it is thus, by providing a more accurate model on its capsules’ sales, as well as recommending adequate implementations that positively contribute to the referred Planning Process, that value is brought to the Project

A exaltação da virtude moral no púlpito da igreja de Santa Cruz de Coimbra

Fundação para a Ciência e a Tecnologia (FCT), Fundação Millennium bcp, Imprensa Nacional-Casa da Moeda