Search results for "Performance."
showing 10 items of 4178 documents
Previsione delle prestazioni del veicolo su strada: stato dell’arte
2016
Questo lavoro contiene una rassegna dei metodi che sono usati per la previsione delle prestazioni del veicolo su strada, in dipendenza del motore installato. La prima parte mostra il calcolo delle resistenze al moto, cioè le forze che il veicolo deve vincere per avanzare sulle strade piane e in salita. Particolarmente interessante appare la parte che riguarda la resistenza aerodinamica, della quale si tratta di metodi sperimentali (galleria del vento), metodi empirici e metodi CFD. Si propone inoltre l’applicazione della norma CUNA sulla velocità per la determinazione dei consumi anche al calcolo dei coefficienti aerodinamici. La rassegna esclude la resistenza accidentale in curva perché no…
Mesure de la performance globale des entreprises
2007
en collaboration avec Nicolas Berland; L'engagement des entreprises dans le développement durable consiste à conjuguer performance et responsabilité. La performance financière ne suffit plus à apprécier la performance d'une entreprise. Dès lors, les entreprises doivent mesurer leurs progrès à partir d'une performance plus globale incluant, en dehors de la dimension économique, des dimensions sociale et environnementale. A présent, comment mesurer cette performance globale ? Existe-il des outils de mesure globale de la performance ? Sinon comment approcher cette mesure ?
Talentutvikling i fotball : kan et opplevd motivasjonsklima predikere behovstilfredsstillelse og selvregulert læring hos unge talentfulle fotballspil…
2016
Masteroppgave i idrettsvitenskap - Universitetet i Agder 2016 Studies that have looked at the relationship between training and performance have sown that athletes must practice at lot in order to reach a high level (Côté et al., 2007; Ericsson et al., 1993; Simon & Chase, 1973), and motivation is viewed as an important factor in order to implement the required training. Through satisfaction of the basic needs of autonomy, competence and relatedness, athletes will feel self-determination and intrinsic motivation (Deci & Ryan, 1985). Furthermore, football players who spend more time promoting their own learning is often preferred over players taking less responsibility (Toering et al., 2012)…
A latent profile analysis of trait emotional intelligence to identify beneficial and risk profiles in well-being and job performance: a study among J…
2016
Trait emotional intelligence (EI) is a noteworthy psychological resource in nursing. However, its effects on well-being and job performance are inconsistent. Thus, we explored the latent beneficial and risk profiles of trait EI among 461 Japanese eldercare nurses. Latent profile analysis revealed six latent profiles. In addition, multivariate analysis of covariance (MANCOVA) showed that the profile with the highest overall scores on the trait EI dimensions was associated with the most beneficial outcomes (better well-being, higher job performance). In contrast, the profiles with lower overall scores on the trait EI dimensions showed negative outcomes. Moreover, a disproportional profile, ch…
The Ka’ulayawaa festivals among the Wayùu. Exploring continuities and variations in forms, meanings and contexts through ethnographic sources
2022
In this paper I review and compare the main sources of information about the ka’ulayawaa festivals among the Wayùu, an Amerindian people inhabiting in the semiarid Guajira peninsula (Northern Colombia and Venezuela). For their peculiar mix of songs, dances, imitative plays and competitive games, inserted into a same festive framework, these festivals are particularly interesting to be studied as expressive metacommentaries (in the sense of Turner) of Wayùu social structures, cultural values and worldview. Nevertheless, they have not so far been the subject of a specific anthropological analysis, also because they ceased to be celebrated around the middle of the twentieth century, that is, b…
Development of high-performance thin layer chromatography method for identification of phenolic compounds and quantification of rosmarinic acid conte…
2020
ABSTRACT Aim: Representatives of Nepetoideae Burnett subfamily are promising species of the Lamiaceae Martinov family because of accumulating such valuable groups of secondary metabolites as terpenoids and polyphenols. A high-performance thin layer chromatography (HPTLC) fingerprint method for the qualitative determination of phenolic compounds and for the quantification of rosmarinic acid (RA) content in methanol extracts of five species of this subfamily was developed for the first time. Materials and Methods: Dried aerial parts of Dracocephalum moldavica L., Ocimum americanum L., Lophanthus anisatus (Nutt.) Benth., Monarda fistulosa L., and Satureja hortensis L. collected in flowering pe…
An Italian experience on crash modeling for roundabouts
2015
In the last few years a considerable amount of safety models and evaluation tasks have been developed and specifically dedicated to roundabouts. Several safety performance functions (SPFs), indeed, have been implemented for roundabouts worldwide. Since SPFs are developed using crashes, traffic volume and other characteristics of a specific site (or geographical area), their direct transferability to other contexts different from those in which SPFs were calibrated is not always possible and, in any case, it must be done very carefully. A safety performance function cannot be used without a transferability evaluation for sites not included in the geographic area for which it was developed. S…
Predicting the 2000‐m Rowing Ergometer Performance from Anthropometric, Maximal Oxygen Uptake and 60‐s Mean Power Variables in National Level Young R…
2020
Abstract Many studies reported various relationships between 2000-m rowing performance and anthropometric as well as metabolic variables, however, little is known about 60-s mean power in elite youth athletes. The aim of this study was to develop different regression models to predict 2000-m rowing indoor performance time (t2000) using anthropometric variables, maximal oxygen uptake (VO2max) and mean power established during a 60-s all-out test (W60) in national elite youth rowers. Fifteen youth male Italian rowers (age: 15.7 ± 2.0 years; body height: 176.0 ± 8.0 cm; body mass: 71.2 ± 10.0 kg) performed an incremental maximal test, a 60-s all-out test and a 2000-m race simulation using a Co…
Safety Culture and Safety Performance in High-Reliability Organizations: A Synthesis of IDOCAL’S Contributions to the Literature
2020
Improving safety culture and safety performance is a constant concern for companies operating in high-risk environments. For almost two decades, IDOCAL (the Research Institute of Personnel Psychology, Organizational Development and Quality of Working Life) has been contributing to advancing our understanding of these important concepts through theoretical development and empirical research. The objective of this article is to synthesize these contributions. Some of the most prominent are (1) the development of a framework for the evaluation of safety culture and its correlates based on the AMIGO model, (2) the establishment of the empowering leadership model as a valuable concept in safety …
Positron production using a 9 MeV electron linac for the GBAR experiment
2020
For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons, which uses a low-energy electron linear accelerator (linac). The driver linac produces electrons of 9 MeV kinetic energy that create positrons from bremsstrahlung-induced pair production. Staying below 10 MeV ensures no persistent radioactive activation in the target zone and that the radiation level outside the biological shield is safe for public access. An annealed tungsten-mesh assembly placed directly behind the target acts as a positron moderator. The system produces $5\times10^7$ slow positrons per second, a performan…