35 documents found, page 1 of 4
Capturing homeostatic behaviour in elite football teams: Synchronisation tenden...
Santos, R.; Garganta, J.; Lopes, R. J.; Davids, K.; Ribeiro, J.This study, investigating the collective homeostasis model, explores the importance of understanding both individual and collective behaviours in analysis of team performance in sport. Rooted in ecological dynamics, this model views collective behaviours in sports teams as a homeostatic process, with structural integrity of performance empowered through synergistic actions at multiple levels. At the microlevel,...
The finishing space value for shooting decision-making in high-performance foot...
Caldeira, N.; Lopes, R. J.; Araújo, D.; Fernandes, D.Football players’ decision-making behaviours near the scoring target (finishing situations) emerge from the evolving spatiotemporal information directly perceived in the game’s landscape. In finishing situations, the ball carrier’s decision-making about shooting or passing is not an individual decision-making process, but a collective decision that is guided by players’ perceptions of match affordances. To sust...
From optical tracking to tactical performance via Voronoi diagrams: Team format...
Caldeira, N.; Lopes, R. J.; Fernandes, D.; Araújo, D.Football performance behaviour relies on the individual and collective perceptual attunement to the opportunities for action (affordances) available in a given competitive environment. Such perception–action coupling is constrained by players’ spatial dominance. Aiming to understand the influence of team formation and players’ roles in their dynamic interaction (interpersonal linkages), Voronoi diagrams were us...
Effects of stress exposure in captivity on physiology and infection in avian ho...
Norte, A. C.; Araújo, P. M.; Augusto, L.; Guímaro, H.; Santos, S.; Lopes, R. J.; Núncio, M. S.; Ramos, J. A.; Lopes de Carvalho, I.Exposure to environmental stressors, an increasingly recurring event in natural communities due to anthropogenic-induced environmental change, profoundly impacts disease emergence and spread. One mechanism through which this occurs is through stress-induced immunosuppression increasing disease susceptibility, prevalence, intensity and reactivation in hosts. We experimentally evaluated how exposure to stressors ...
The elusive features of success in soccer passes: A machine learning perspective
Muacho, H.; Ribeiro, R.; Lopes, R. J.Machine learning has in recent years been increasingly used in the soccer realm. This paper focuses on investigating the factors influencing pass success, a chief element in team performance. Decision tree techniques are used aiming to identify which features are the most important in pass success. This process is applied to a data set of 13 matches of the men’s French “Ligue 1”. Two experiments are conducted u...
Unfolding the dynamical structure of Lisbon’s public space: space syntax and mi...
Almeida, H.; Lopes, R. J.; Carrilho, J.M.; Eloy, S.Space Syntax and the theory of natural movement demonstrated that spatial mor- phology is a primary factor influencing movement. This paper investigates to what extent spatial morphology at different scales (node, community and global network) influences the use of public space by micromobility. An axial map and corresponding network for Lisbon’s walkable and open public space, and data from e-scooters parking ...
Community identity in a temporal network: a taxonomy proposal
Pereira, L. R.; Lopes, R. J.; Louçã, J.Communities of nodes are one of the most important meso structures in a network. In static networks they are essentially characterized by the nodes they hold, how modular they are and how they connect to other communities. Once identified, they do not change. In networks that evolve over time, communities can shed and acquire new nodes. This generates new constructs and raises the question of community identity...
“How Was the Match?”: Semantic similarity between electronic media commentary a...
Silva, G.; Ribeiro, R.; Lopes, R. J.Football player’s performance can be measured in an objective way (e. g. Goals scored, assists, interceptions), this being seldom a method to compare and rank the best players by categories. Over years of study, many other factors that can influence the players performance were discovered and studied, considering not only objective factors, but also subjective factors. Match commentary from different sources (e...
Food system sustainability metrics: Policies, quantification, and the role of c...
Matos, J.; Lopes, R. J.The rise of global attention toward sustainability and sustainable development (SD) has provided increased incentives for research development and investment in these areas. Food systems are at the center of human needs and global population growth sustainability concerns. These drives and the need to provide quantified support for related investment projects led to the proliferation of sustainability metrics a...
The soccer game, bit by bit: An information-theoretic analysis
Pereira, L. R.; Lopes, R. J.; Louçã, J.; Araújo, D.; Ramos, J.In this article, we present an original method to measure the rate of positional change observed during a soccer match based on the relative spatial distribution of players on the pitch. This is justified as play- ers use their relative position as a key tactical tool to contribute to their team’s objectives. A temporal network representation of the game was used, where nodes are players discretely clustered by...