DigitUMa

University of Madeira Institutional Repository

Bem-vindo ao Repositório Digital da UNIVERSIDADE DA MADEIRA.

O Repositório da Universidade da Madeira (UMa), conhecido pelo acrónimo DigitUMa, tem como objetivo a disponibilização, em regime de livre acesso e texto integral, de toda a produção científica realizada pelos docentes, investigadores da UMa, discentes dos 2º e 3º ciclos e pelos funcionários.

O Repositório Institucional, DigitUMa, assenta na política de Acesso Aberto à informação e conhecimento científicos.

Email antonio.freitas@staff.uma.pt

Recent Submissions

Containerizing and evaluating the WRF model for cloud-based HPC

Publication . Gouveia, Diogo Manuel Sales; Baras, Karolina; Vieira, Rui Ricardo Almeida

Numerical models are mathematical representations that solve algebraic or differential equations to simulate phenomena across time and space. Some models, such as the Weather Research and Forecasting (WRF) model, are applied to weather prediction, providing valuable information to individuals, companies, institutions, and governments on potential future events. However, the WRF model can become highly computationally demanding, requiring increasingly power ful hardware resources with the increase of the resolutions and complexity of the simulations. High-Performance Computing (HPC) allows users to leverage powerful instances tailored to their needs, providing the necessary hardware resources for running complex WRF simulations. Mean while, cloud computing presents an enticing option for computationally demanding programs, offering advantages such as economies of scale, high reliability, and availability. On the software side, compiling, configuring, and installing multiple libraries are essential to exploit WRF’s po tential, which can be an arduous task. This study explores a cloud-enabled approach using pre configured Docker images and compares it to on-premises, HPC, and cloud solutions. We also analyze whether cloud computing is economically and performance-wise viable, using a compa rable base architecture across multiple cloud providers, and assess if the convenience of Docker meets the requirements despite potential overhead.

2025-09-05Master thesis

Open access

Fair play: the perception of the young handball players on the parent´s behavior

Publication . Sousa, Duarte; Cardoso, Américo; Ramos Cardoso, Américo; Rodrigues, Ana; Noite, João; Lopes, Helder; Lopes, Helder; Fernando, Catarina; Prudente, João; Prudente, João Filipe

In recent years, the deviant and negative behaviours of parents during follow-up in their children's sports practice have reached alarming proportions in various sports. This increase may be associated with greater participation of parents, both in the presence in games and in training. With this study, we intend to assess the perception of the athletes about the behaviour of the parents in the sports context, namely in relation to fair play. The sample consisted of young handball players from the Madeira Handball Association, aged 9- 16 years of both genders (n = 284, male n = 122, female n = 162) registered by ten clubs and with a minimum of one year of organized sports practice. For the data collection, a questionnaire previously constructed and duly validated was used. In this study were used descriptive statistics (mean and standard deviation), chi square and Spearman correlations. The statistical program used was SPSS v.25.0 and the level of significance was 5%.The results confirm that the athletes consider positive the presence of their parents, however, the results point to a perception of inadequate behaviours of the parents regarding the referees, mainly by the boys. It was found that the younger the athletes are the greater is the perception of the enthusiastic support of the parents, the greater the volume of instructions to the field, and the perception of a greater emotional discontent of the parents in relation to the problems and incidents of the game and training.

2019Conference paper

Open access

The athlete’s perception of parents behaviors in sport context: a study in youth handball players of the Madeira Handball Association

Publication . Sousa, Duarte; Sousa, Duarte; Cardoso, Américo; Ramos Cardoso, Américo; Rodrigues, Ana; Rodrigues, Ana; Noite, João; Lopes, Helder; Fernando, Catarina; Fernando, Catarina; Prudente, João; Prudente, João Filipe

The participation of parents in their children's sports is very important. However, many parents end up having negative and deviant behaviours in sports and social context, generating this participation some controversy and misunderstandings. With this study, we intend to assess the perception of the athletes about the behaviour of the parents in the sport context, considering the demographic characteristics of the athletes (gender and age). The sample is composed by young handball players from the Madeira Handball Association, aged 9-16 years of both sexes (n=284, male n=122, female n=162) registered by ten clubs and with a minimum of one year of organized sports practice. For the collection of data, a questionnaire previously constructed and duly validated was used. The results confirm the perception of the role of parents in supporting their children 's sports practices, as well as motivating them for the sport. There is also a perception of the young players of a pressure exerted by the parents in obtaining immediate results and little appreciation of the progress of learning.

2019Conference paper

Open access

Physical activity levels in adults with intellectual disabilities: the importance of physical education

Publication . Rodrigues, Ana José Aguiar; Rodrigues, Ana; Sousa, Duarte; Lopes, Helder; Lopes, Helder; Prudente, João; Prudente, João Filipe

The relationship between physical activity levels and health indicators is widely reported in the literature. However, the number of studies that characterize the physical activity profile in intellectually disabled adults is still small. The aims of this study are: (i) to determine the levels of physical activity in adults with intellectual disability, (ii) to study differences in physical activity levels between gender and between days with or without physical education. A total of 78 subjects (41 males and 37 females) with intellectual disability (mild and moderate), with a mean age of 30.18 ± 8.55 years, participated in the study. The physical activity levels were evaluated by pedometer (Yamax Digiwalkers SW-700), placed in two working days (one with Physical Education and another without Physical Education classes). There were reduced levels of physical activity in days with Physical Education (4865.21 ± 1611.04) and without (3739.22 ± 1243.34), clearly below the recommended values. Men were more active compared to women, but only on days with Physical Education (p <.05). In the days with Physical Education classes, there is a 24% increase in physical activity levels (27% in men and 20% in women). The performance of physical education classes seems to have benefic effects on physical activity levels, however, it is necessary to develop a study that helps to understand more deeply the factors that influence the levels of physical activity in this population.

2019Conference paper

Open access

The importance of attitudes and values in sport and competition: the opinion of a group of coaches of volleyball

Publication . Ximenes, Marcela Dantas; Rodrigues, Ana José Aguiar; Rodrigues, Ana; Silva, Jefferson Jurema; Prudente, João Filipe Pereira Nunes; Prudente, João Filipe

Behaviours of children and young people in sport are influenced by the attitudes and behaviours of adults. Behaviours related to fair play, respect for others and rules, conveyed through coaches' example are important, at a time when young people are his own identity, tending to identify with figures such as coaches and where the maxim "does what I say and not what I do" does not work. The objective of the study was to identify the importance that coaches attribute to values and attitudes in sport, and to study the association between the trainer's biographical characteristics and the relevance of these values and attitudes in sport and competition. A total of 30 volleyball coaches (21 men and 9 women) were interviewed, with a mean age of 39.23 ± 10.57 years. To collect information on the selection criteria, we used the survey adapted from Cardoso, (2007). The study project was approved by the scientific committee of the Department of Physical Education and Sport and ethics committee of the State University of Amazonas. For the analysis of the data, mean and standard deviation statistics were used. In the normality of the variables, the Kolmogorov-Smirnov test was used and the association between variables was the Chi-square test for qualitative variables and Spearman correlations in quantitative variables. T-Student was used to determine differences between groups in variables with normal distribution. Most of the Amazon coaches attach significant importance to all factors related to values and attitudes in sport and competition among young children.

2019Conference paper

Open access