Encontrados 12 documentos, a visualizar página 1 de 2
Feature Selection Optimization for Heart Rate Variability
Antunes, Ana Rita; Silva, Joaquim P.; Braga, Ana Cristina; Gonçalves, JoaquimFeature selection optimization has gained attention since it helps extract good insights about a given subject. It is commonly used to reduce the dimensionality of the problem and to identify the best combination of features with aim of improving the prediction or classification model performance. Thereby, the present study intended to determine the best subset of features to classify the drowsiness state, into...
Drowsiness transitions detection using a wearable device
Antunes, Ana Rita; Braga, A. C.; Gonçalves, JoaquimDue to a reduction in reaction time and, consequently, the driver’s concentration, driving when fatigued has become an issue throughout time. Consequently, the likelihood of having an accident and it being fatal increases. In this work, we aim to identify an automatic method capable of detecting drowsiness transitions by considering the time, frequency, and nonlinear domains of heart rate variability. Therefore...
A statistical comparison of metaheuristics for unrelated parallel machine sched...
Antunes, Ana Rita; Matos, Marina A.; Rocha, Ana Maria A. C.; Costa, Lino; Varela, M.L.R.Manufacturing scheduling aims to optimize one or more performance measures by allocating a set of resources to a set of jobs or tasks over a given period of time. It is an area that considers a very important decision-making process for manufacturing and production systems. In this paper, the unrelated parallel machine scheduling problem with machine-dependent and job-sequence-dependent setup times is addressed...
Feature selection optimization of risk factors for coronary heart disease
Antunes, Ana Rita; Costa, Lino A.; Rocha, Ana Maria A. C.; Braga, A. C.Cardiovascular disease is a worldwide problem and is the main cause of mortality when coronary heart disease leads to a heart attack. Hence, it is important to evaluate how to prevent this disease considering the symptoms description and physical examinations.This study points out the application and comparison of different performance measures for the classification of heart disease. Firstly, a feedforward neu...
Regulação do setor energético em resposta a emergência climática - Produção dec...
Prino, Carla; Antunes, Ana Rita; Bothe, AnjaEm pleno contexto de emergência climática, as emissões associadas ao consumo de energia justificam que se repensem os sistemas de produção, de distribuição e de consumo; de forma a alcançar-se uma eficiência energética que fomente um desenvolvimento económico e social sustentável, assente num sistema de energia eficiente, seguro, acessível e compatível com a proteção ambiental. Fala-se de transição energética p...
Non–profit and investment attractiveness – best practices under a national pers...
Antunes, Ana RitaA 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; This Work Project (WP) aims to measure the investment attractiveness of the social sector by providing a general overview of the investment strategies and motivations behind Non-Profit Initiatives (NPIs) performed by the For-Profit sector (FP), usually perceived...
Patterns of perceptions of workplace violence in the Portuguese health care sector
Ferrinho, Paulo; Biscaia, André; Fronteira, Inês; Craveiro, Isabel; Antunes, Ana Rita; Conceição, Cláudia; Flores, Isabel; Santos, OsvaldoThis article characterizes the problem of violence against health professionals in the workplace (VAHPITWP) in selected settings in Portugal. It addresses the questions of what types of violence are most frequent and who are the most affected health professionals. Three methodological approaches were followed: (i) documentary studies, (ii) a questionnairebased hospital and health centre (HC) complex case study ...
Os Centros de Saúde em Portugal - A Satisfação dos Utentes e dos Profissionais
Santos, Osvaldo; Biscaia, André; Antunes, Ana Rita; Craveiro, Isabel; Júnior, António; Caldeira, Rita; Charondière, PascaleA satisfação com os serviços de saúde, na sua dupla vertente da satisfação dos utentes e da satisfação dos profissionais, é uma área complexa e de difícil avaliação mas, ao mesmo tempo, incontornável. A satisfação dos utentes é, actualmente, considerada como um objectivo fundamental dos serviços de saúde e tem vindo a ocupar um lugar progressivamente mais importante na avaliação da qualidade dos mesmos. O aumen...
Avaliação da motivação dos enfermeiros para a prática de controlo de infecção n...
Antunes, Ana Rita; Silva, Ana Rita; Rodrigues, Camila; Duque, Mário; Mateus, Bárbara AiresO presente trabalho de investigação com o tema “Avaliação da Motivação do Enfermeiro para a prática de Controlo de Infecção numa Unidade de Cuidados Intensivos Neonatais”, teve como objectivo avaliar a motivação dos enfermeiros para a prática do controlo de infecção. Para tal, foram inquiridos os enfermeiros que exercem funções em Unidades de Cuidados Intensivos Neonatais (UCIN) de três Hospitais distintos da r...
Regional differences in adherence to the experimental remuneration scheme for f...
Conceição, Cláudia; Antunes, Ana Rita; Lerberghe, Wim Van; Ferrinho, Paulo; ,In this paper we explore the reasons leading to differences in adherence to the experimental payment system (EPS) until January 2000. Adherence was defined as the forwarding of declarations of intention by a group of doctors starting a negotiation process with the administration on the terms for a work program. Semi-structured interviews to a selected sample of key informants who had a role in the conception ...