Search results for " performance."
showing 10 items of 2429 documents
Human Heart-Related Indexes Behavior Study for Aircraft Pilots Allowable Workload Level Assessment
2022
This study aimed to evaluate workload by detecting Heart Rate Variability (HRV) indexes in a sample of 34 pilots (with a mean age of 33 years) while performing simulated flight exercises. A one-way ANOVA with repeated measures was performed to assess the changes of the physiological measures in five standard maneuvers associated with different workload levels. The results show that all the indexes, but the Low Frequency to High Frequency ratio index (LF/HF), have a well-defined trend between the baseline and the en-route phase and with the three phases takeoff, steady turn, and landing. This study, as main findings, provides evidence of a differentiation among low, medium, and high workload…
El coaching com a estratègia psicològica: punts clau per a la seua correcta aplicació
2019
espanolEl coaching es un termino que esta desde hace unos anos muy presente en nuestra sociedad y que muchas veces se usa como sinonimo de desarrollo personal, y bajo este paraguas se amparan diversas «terapias» o «pseudoterapias » con diferentes efectos sobre las personas que se someten a ellas. Es necesario, para adecuada practica del coaching que este concepto este bien definido y todos los que intervienen en el asuman su verdadero papel para el maximo beneficio de todos, sabiendo ademas que es una metodologia de base psicologica que se puede aplicar en diversos ambitos y por distintos profesionales, atendiendo a las correctas condiciones de aplicacion. En este trabajo y con el principal…
Evaluation of Roundabout Safety Performance through Surrogate Safety Measures from Microsimulation
2018
The paper presents a microsimulation-based approach for roundabout safety performance evaluation. Based on a sample of Slovenian roundabouts, the vehicle trajectories exported from AIMSUN and VISSIM were used to estimate traffic conflicts using the Surrogate Safety Assessment Model (SSAM). AIMSUN and VISSIM were calibrated for single-lane, double-lane and turbo roundabouts using the corresponding empirical capacity function which included critical and follow-up headways estimated through meta-analysis. Based on calibration of the microsimulation models, a crash prediction model from simulated peak hour conflicts for a sample of Slovenian roundabouts was developed. A generalized linear model…
Accounting for dispersion and correlation in estimating Safety Performance Functions. An overview starting from a case study
2013
In statistical analysis of crash count data, as well as in estimating Safety Performance Functions (SPFs), the failure of Poisson equidispersion hypothesis and the temporal correlation in annual crash counts must be considered to improve the reliability of estimation of the parameters. After a short discussion on the statistical tools accounting for dispersion and correlation, the paper presents the methodological path followed in estimating a SPF for urban four-leg, signalized intersections. Since the case study exhibited signs of underdispersion, a Conway-Maxwell-Poisson Generalized Linear Model (GLM) was fitted to the data; then a quasi-Poisson model in the framework of Generalized Estim…
Financial Risk Management and Sustainability
2021
In the last decades, the studies that analyze the links between corporate social responsibility and financial performance in developed countries show mixed and inconclusive results, so additional research is required [...]
The Impact of Mergers and Acquisitions and Sustainability on Company Performance in the Pharmaceutical Sector
2021
The primary goal of this study was to determine the impact of mergers and acquisitions (M&
Environmental Sustainability Approaches and Positive Energy Districts: A Literature Review
2021
During the last decade, increasing attention has been paid to the emerging concept of Positive Energy Districts (PED) with the aim of pushing the transition to clean energy, but further research efforts are needed to identify design approaches optimized from the point of view of sustainable development. In this context, this literature review is placed, with a specific focus on environmental sustainability within innovative and eco-sustainable districts. The findings show that some sustainability aspects such as sustainable food, urban heat islands mitigation and co-impacts, e.g., green gentrification, are not adequately assessed, while fragmented thinking limits the potential of circularit…
High ionospheric activity effects on LatPos RTK network performance in Latvia
2017
Age-Related Changes in Predictive Capacity Versus Internal Model Adaptability: Electrophysiological Evidence that Individual Differences Outweigh Eff…
2015
Hierarchical predictive coding has been identified as a possible unifying principle of brain function, and recent work in cognitive neuroscience has examined how it may be affected by age related changes. Using language comprehension as a test case, the present study aimed to dissociate age-related changes in prediction generation versus internal model adaptation following a prediction error. Event related brain potentials (ERPs) were measured in a group of older adults (60-81 years; n = 40) as they read sentences of the form "The opposite of black is white/yellow/nice." Replicating previous work in young adults, results showed a target related P300 for the expected antonym ("white"; an eff…
Sarcopenic osteoarthritis: a new entity in geriatric medicine?
2018
Purpose: Osteoarthritis, a disease characterized by cartilage degradation, abnormal subchondral bone remodeling and some grade of inflammation, and sarcopenia, a condition of low muscle mass associated with reduced strength and function, are prevalent disorders in older adults. In this review, we examine what is known about the relationship between osteoarthritis and sarcopenia, with particular focus on the older population. We also discuss how osteoarthritis and sarcopenia may interact and affect each other in clinical progression and the potential benefits from developing treatments that address such muscular-skeletal interaction. Methods: We searched in Pubmed and Scopus through a combin…