Search results for "STRESS"

Validation of a Shear Model for RC and Hybrid Beams with Two Different Inclinations of Transversal Reinforcement

2016

The validation of an analytical model recently proposed for evaluation of the shear capacity in Reinforced Concrete (RC) beams containing multiple inclination of transverse stirrups is presented. The model is a suitable extension of that currently proposed in Eurocode 2 for the evaluation of the shear resistance, and it is derived by means of the the variable-inclination stressfield theory based on Nielsen’s plastic approach. Experimental and numerical data available in the literature on Hybrid Steel-Trussed Concrete Beams (HSTCBs) are used for model validation and result discussion. Finally, also the comparison with a different analytical approach for the assessment of the shear resistance…

A Path Model for Subjective Well-Being during the Second Wave of the COVID-19 Pandemic: A Comparative Study among Polish and Ukrainian University Stu…

2022

Background: Previous studies showed several associations between physical and mental health dimensions and well-being. This study aims to examine a complex path model explaining the life satisfaction of university students from Poland and Ukraine during the second wave of the COVID-19 pandemic. Methods: The cross-sectional web-based study was performed in November 2020 using Google Forms. The conventional sample of 3230 university students from Poland (n = 1581) and Ukraine (n = 1649), aged 18–59 (M = 21.40, SD = 3.46), with 59% women, participated in the study. We used standardized questionnaires to measure life satisfaction (SWLS), self-reported physical health (GSRH), perceived stress (P…

Bifactor analysis and construct validity of the five facet mindfulness questionnaire (FFMQ) in non-clinical Spanish samples

2015

The objective of the present study was to examine the dimensionality, reliability, and construct validity of the Five Facet Mindfulness Questionnaire (FFMQ) in three Spanish samples using structural equation modeling (SEM). Pooling the FFMQ data from 3 Spanish samples (n = 1191), we estimated the fit of two competing models (correlated five-factor vs. bifactor) via confirmatory factor analysis. The factorial invariance of the best fitting model across meditative practice was also addressed. The pattern of relationships between the FFMQ latent dimensions and anxiety, depression, and distress was analyzed using SEM. FFMQ reliability was examined by computing the omega and omega hierarchical c…

Rentona koulussa? : kartoitus neljäsluokkalaisten oppilaiden kokemuksista koulussa toteutettavasta rentoutuksesta

1999

Dynamics of hydrofracturing and permeability evolution in layered reservoirs

2015

International audience; A coupled hydro-mechanical model is presented to model fluid driven fracturing in layered porous rocks. In the model the solid elastic continuum is described by a discrete element approach coupled with a fluid continuum grid that is used to solve Darcy based pressure diffusion. The model assumes poro-elasto-plastic effects and yields real time dynamic aspects of the fracturing and effective stress evolution under the influence of excess fluid pressure gradients. We show that the formation and propagation of hydrofractures are sensitive to mechanical and tectonic conditions of the system. In cases where elevated fluid pressure is the sole driving agent in a stable tec…

Sotilaan fyysisen toimintakyvyn tutkimus vuosilta 2005–2020 yksissä kansissa

2022

Sotilaan fyysisen toimintakyvyn tutkimustoiminta aloitettiin Puolustusvoimissa laajamittaisesti vuoden 2005 alusta, jolloin tässä artikkelissa kuvatun teoksen edeltäjä, Taistelija 2005, julkaistiin. Sitä ennen tutkimus oli ollut sirpaleista ja vailla suunnitelmallisuutta. Tutkimusta on tehty yhteistyössä ulkopuolisten tutkimuslaitosten, kuten Jyväskylän yliopiston, Työterveyslaitoksen ja UKK-instituutin, kanssa. Puolustusvoimissa keskeisiä toimijoita ovat olleet Pääesikunnan koulutusosasto, Maanpuolustuskorkeakoulu, Sotilaslääketieteen keskus ja Puolustusvoimien tutkimuslaitos. Tässä artikkelissa kuvataan lyhyesti sotilaan fyysisen toimintakyvyn tutkimusta vuosilta 2005–2020. Aiheeseen liit…

Differential associations of leisure music engagement with resilience : A network analysis

2023

Background/Objective Several factors associated with resilience as the maintenance of mental health despite stress exposure can be strengthened through participation in leisure time activities. Since many people listen to or make music in their leisure time, the aim of the present study was to provide insights into the architecture of how resilience relates to passive and active music engagement. Method 511 participants regularly listening to and/or making music completed an online survey on resilient outcomes (i.e., mental health and stressor recovery ability), different resilience factors (e.g., optimism, social support), quantitative music engagement (i.e., time spent with music listenin…

Sport Coaches Burnout as a Threat to Professional Success, Mental Health and Well-Being

2021

The article explores motivational and personality predictors of burnout syndrome in sports coaches. The study involved 183 sports coaches of 20–63 years old (86.9% women; M=41.34±10.56 years), with professional experience for 13.83±9.98 years. Three components of professional burnout ― Emotional exhaustion, Depersonification and Reduction of professional achievements ― were measured with the adapted Maslach professional burnout inventory (Vodopyanova, et al 2008). Motivational aspects were measured with the adapted Ryan and Connell Professional Motivation inventory (Osin et al, 2017). Personal resources ― stress resistance, authenticity and coping strategies ― were measured with the adapted…

Grass Pea

2011

Grass pea (Lathyrus. sativus L.) is an annual legume crop with high protein content and remarkable resistance to extreme environmental conditions, including fl ooding, drought, salinity and low soil fertility, and a signifi cant degree of resistance to biotic stress agents. It is rightly considered one of the most promising sources of calories and protein for the vast and expanding populations of drought-prone and marginal areas of Asia and Africa and as an interesting alternative for cropping systems diversifi cation in marginal lands in Europe, Australia and America. It is a dual purpose crop with great agronomic potential as a grain and forage legume. Nevertheless, as a result of the lit…

Antioxidant Effects of Dietary Supplements on Adult COVID-19 Patients: Why Do We Not Also Use Them in Children?

2022

Respiratory tract infections (RTIs) are very common in children, especially in the first five years of life, and several viruses, such as the influenza virus, Respiratory Syncytial Virus, and Rhinovirus, are triggers for symptoms that usually affect the upper airways. It has been known that during respiratory viral infections, a condition of oxidative stress (OS) occurs, and many studies have suggested the potential use of antioxidants as complementary components in prophylaxis and/or therapy of respiratory viral infections. Preliminary data have demonstrated that antioxidants may also interfere with the new coronavirus 2’s entry and replication in human cells, and that they have a role in …