Search results for "behaviour"

Understanding Action and Adventure Sports Participation—An Ecological Dynamics Perspective

2017

© 2017, The Author(s). Previous research has considered action and adventure sports using a variety of associated terms and definitions which has led to confusing discourse and contradictory research findings. Traditional narratives have typically considered participation exclusively as the pastime of young people with abnormal characteristics or personalities having unhealthy and pathological tendencies to take risks because of the need for thrill, excitement or an adrenaline ‘rush’. Conversely, recent research has linked even the most extreme forms of action and adventure sports to positive physical and psychological health and well-being outcomes. Here, we argue that traditional framewor…

“Just Going through the Motions….”: A Qualitative Exploration of Athlete Perceptions of Social Loafing in Training and Competition Contexts — Implica…

2014

Semi-structured interviews were conducted with twenty team sport athletes representing a range of different sports with the aim of investigating their views relating to social loafing in training and competition. General themes investigated and subsequent content analysis highlighted factors that promote or reduce the extent of social loafing. Determinants of self-loafing were grouped according to three distinct categories: Group processes; Task characteristics and Individual perceptions. Social loafing among others was perceived to be prevalent in both the training and competition scenarios with more examples of social loafing provided in the training situation. The signs of social loafin…

Diversity in Teams : Perceptions of Team Learning Behaviour in a Military Staff Exercise

2020

The aim of this study is to analyse diversity in team learning behaviour between and among national respondents’ perceptions during a military staff exercise (CJSE). Edmondson’s team learning behaviour model is used as the theoretical basis of the study. The results showed statistically significant differences both between and among national respondents’ perceptions. The research results indicate that team leader coaching, team psychological safety, the importance of obtaining expert knowledge as well as pre-exercise training are perceived to be crucial for team learning behaviour. The study has theoretical and practical implications for a more nuanced understanding of the diversity of team…

Social Media usage in enterprises. Empirical evidence from different perspectives

Il nostro mondo è in continua evoluzione a causa dell'impatto pervasivo delle tecnologie dell'informazione e della comunicazione (TIC), come ad esempio gli Smartphone, i Social Media, i Blog e molto altro ancora. Molte di queste tecnologie non esistevano alcuni anni fa ma, oggi, stanno diventando fondamentali per la nostra vita, per la società e per le imprese. Nello specifico, questa tesi si concentra sugli aspetti economici e psicologici dell'uso dei Social Media nelle imprese, fornendo nuove evidenze empiriche, utili a corroborare e migliorare gli attuali modelli concettuali e teorici. La tesi è strutturata in tre capitoli. Nel primo capitolo, si utilizzano dati aggregati sull'uso delle …

Energy consumption model of aerial urban logistic infrastructures

2021

In the last decade, logistic systems based on small aerial vehicles (drones) have become attractive for urban delivery operations as a sustainable alternative to ground vehicles because they are not affected by the congestion of the road network, thus allowing for faster and more reliable services. Aerial logistic systems, however, require a substantially different approach to operations management and need specifically designed supportive infrastructures. While the research on urban aerial delivery mostly focuses on the optimization vehicle operations, the appropriate design of supportive infrastructures is seldom considered. This paper focuses on the energy efficiency of aerial logistic s…

Impact of Si on the high-temperature oxidation of AlCr(Si)N coatings

2022

The resistance of wear protective coatings against oxidation is crucial for their use at high temperatures. Here, three nanocomposite AlCr(Si)N coatings with a fixed Al/Cr atomic ratio of 70/30 and a varying Si-content of 0 at.%, 2.5 at.% and 5 at.% were analyzed by differential scanning calorimetry, thermogravimetric analysis and X-ray in order to understand the oxidation behavior depending on their Si-content. Additionally, a partially oxidized AlCrSiN coating with 5 at.% Si on a sapphire substrate was studied across the coating thickness by depth-resolved cross-sectional X-ray nanodiffraction and scanning trans-mission electron microscopy to investigate the elemental composition, morphol…

Short telomeres drive pessimistic judgement bias in zebrafish.

2021

The role of telomerase reverse transcriptase has been widely investigated in the contexts of ageing and age-related diseases. Interestingly, decreased telomerase activities (and accelerated telomere shortening) have also been reported in patients with emotion-related disorders, opening the possibility for subjective appraisal of stressful stimuli playing a key role in stress-driven telomere shortening. In fact, patients showing a pessimistic judgement bias have shorter telomeres. However, in humans the evidence for this is correlational and the causal directionality between pessimism and telomere shortening has not been established experimentally yet. We have developed and validated a judg…

Experimental investigation on tensile and shear bond behaviour of Basalt-FRCM composites for strengthening calcarenite masonry elements

2023

The use of Fabric Reinforced Cementitious Matrix (FRCM) composites for structural retrofit has seen an increased interest among the scientific community, during the last decade. Various studies have revealed their effectiveness as external retrofitting technique of masonry elements, offering numerous advantages respect to the well know Fibre Reinforced Polymer (FRP) in terms of compatibility with masonry support, reversibility of intervention and sustainability. Despite the growing use, the characterization of FRCM mechanical behaviour is still an open issue, due to numerous uncertainties involved in test set-up adopted and fibre-mortar combination. The proposed experimental study aims to i…

Effects of chronic treatment with testosterone propionate on aggression and hormonal levels in intact male mice.

1998

Effects of testosterone propionate, an anabolic-androgenic steroid (AAS), on aggression in gonadally intact male mice were examined. Animals were given weekly injections of 3.75, 7.5, 15, and 30 mg/kg of drug or sesame oil for 10 weeks. During the last 3 weeks, behavioral tests were conducted and at the end of the experiment, body, liver and testes weight and hormonal data were collected. The treatment had minimal behavioral and endocrine effects. It resulted in shorter latencies of 'threat' only in the last agonistic encounter, increases in testosterone levels and decreases in testes weight in a non-linear dose-dependant way. The action of treatment was different on threat and attack, the …

Carbon nanotubes-based nanohybrids for multifunctional nanocomposites

2017

In the present work, nano-hybrids based on carbon nanotubes (CNTs) bearing immobilized, either through covalent linkage and physical absorption, commercial anti-oxidant molecules have been formulated and used as nanofillers in Ultra High Molecular Weight Polyethylene (UHMWPE), aiming at preparing multifunctional nanocomposites. The effective immobilization of the anti-oxidant molecules has been probed by spectroscopic and thermogravimetric analyses. The study of the morphology and the rheological behaviour of the nanocomposites show that the immobilization of anti-oxidant molecules onto the CNTs surface is beneficial for the state of the polymer/nanoparticles interfacial region. Additionall…