Modelação dinâmica da performance em basquetebol

O objetivo deste estudo foi identificar a variação intra-jogo nos quatro fatores que mais determinam o desfecho final dos jogos de basquetebol, controlando o efeito da qualidade da oposição. Foram analisados os registos play-by-play de setenta e quatro jogos do Campeonato do Mundo de Basquetebol (Turquia 2010) para calcular os fatores da performance em cada período de cinco minutos. Depois utilizou-se uma ANOVA para medidas repetidas com o tempo como variável dependente e com o desfecho final dos jogos como variável independente, tendo a qualidade das equipas sido introduzida como covariável. A percentagem efetiva de lançamentos de campo (F=13,98 p≤0,05) influenciou o desfecho final do jogo ao longo de todo o encontro, enquanto a percentagem de ressaltos ofensivos (F=7,61 p≤0,05) teve maior influência na segunda parte. Os rácios ofensivo (F=6,25 p≤0,05) e defensivo (F=12,01 p≤0,05) também influenciaram a decisão dos jogos. Estes resultados permitem aos treinadores melhor informação para preparar as suas equipas para a competição; ABSTRACT: The aim of this study was to identify the intra-game variation in the four factors that determine the final outcome of basketball games, controlling the effect of quality of opposition. We analyzed the play-by-play records of seventy-four games of the Basketball World Championship (Turkey 2010) to calculate the factors of performance in each period of five minutes. Then we used a repeated measures ANOVA with time as the dependent variable and the final outcome of the games as an independent variable, with the quality of the teams introduced as a covariate. The effective field goal percentage (F = 13.98 p ≤ 0.05) influenced the game final outcome throughout the game, while the offensive rebounds percentage (F = 7.61 p ≤ 0.05) had greater influence in the second half. The offensive (F = 6.25 p ≤ 0.05) and defensive (F = 12.01 p ≤ 0.05) ratios also influenced the decision of the games. These results allow coaches to have better information to prepare their teams for the competition

Effects of age in Useful Field of View and Time-to-Arrival

The main aim of this study was to investigate possible age effects in Useful Field of View (UFOV) and Time to Arrival (TTA). Ninety-six male and female active drivers participated in this research: 32 young drivers (18-30 years old), 32 middle-aged drivers (38-50 years old) and 32 older drivers (60-75 years old). Concerning to UFOV, results showed that older drivers had poorer results in divided attention and selective attention. Furthermore, some nonlinear variation occur, revealing a much more evident decrease in visual attention performance from the middle-aged to the older group then from the younger to the middle-aged group. In TTA analysis, older adults were less consistent then the other drivers in judging a vehicle approaching at 50 km/h. TTA estimated accuracy increased when the approaching vehicle travels at higher speeds. Although not significant, it was founded a U-shape relationship between age and response bias of TTA. We conclude that UFOV is much more sensitive to age effects then TTA and interventions should be designed to enhance UFOV between older drivers. The effectiveness of TTA paradigm for driving behavior analysis is also discussed

Strategy, Tactics, and Home Advantage in Team Sports

One of the most intriguing effects of home advantage (HA) in team sports is how coaches, teams, and players prepare strategically and tactically depending on whether competing at home or away. This is reflected in the different approaches that coaches may use for home matches (e.g., more overall pressure, aggressive defence, quicker attacks, and more collective tactical behaviour during ball possession), thereby increasing the intensity and tactical assertiveness of players. Besides, coaches have evolved their decision-making, following knowledge based on pre-match research (e.g., studying the strengths and weaknesses of their opponents and how they depend on match venue) and in-match situations (e.g., substitutions or tactical changes), where information transfer is a critical issue for improving the chances of winning at home. This chapter will attempt to understand the concept of HA under the lens of strategy and tactics in team sports

Towards an integrated framework for aerospace supply chain sustainability

Supply chains have become one of the most important strategic themes in the aerospace industry in recent years as globalization and deep technological changes have altered the industry at many levels, creating new dynamics and strategies. In this setting, sustainability at the supply chain level is an emerging research topic, whose contributions aim to support businesses into the future. To do so the development of new products and the response to new industry requirements, while incorporating new materials appears as a path to follow, which require more resilient and agile supply chains, while guaranteeing their sustainability. Such supply chains will be better prepared for the future complex challenges and risks faced by the aerospace companies. Such challenges are addressed in this work, where an integrated framework is proposed to contribute to the resilience and sustainability of aerospace supply chains. Using different analysis methods, the framework addresses four important challenges in the context of aerospace supply chain sustainability: evolution and new trends, performance assessment, supplier selection, and supply chain design and planning.POFC - Programa Operacional Temático Factores de Competitividade(POCI-01-0145-FEDER-007043)This work has been supported by project MITP-TB/PFM/0005/2013 in the frame of MIT-Portugal program, by COMPETE: POCI-01-0145-FEDER-007043 and FCT - Fundação para a Ciência e a Tecnologia within the project UID/CEC/00319/2013