Search results for "LONG"
showing 10 items of 3969 documents
Monochromatic Long-Period Seismicity Prior to the 2012 Earthquake Swarm at Little Sitkin Volcano, Alaska
2021
Detection of the earliest stages of unrest is one of the most challenging and yet critically needed aspects of volcano monitoring. We investigate a sequence of five unusual long-period (LP) earthquakes that occurred in the days prior to the onset of a months-long volcano-tectonic (VT) earthquake swarm beneath Little Sitkin volcano in the Aleutian Islands during late 2012. The long-period earthquakes had two distinctive characteristics: their signals were dominated by a monochromatic spectral peak at approximately 0.57 Hz and they had impulsive P and S-wave arrivals on a seismometer located on Amchitka Island 80 km to the southeast of the volcano. In each case, the monochromatic earthquakes …
"No matter how old I am, I don’t like what my stomach looks like." Lifespan perspective on the changes in self-assessment of attractiveness and life …
2020
The study aimed to examine the association between self-assessment of attractiveness and life satisfaction in women, where age was a potential moderator of this relationship. A cross-sectional study of 360 women aged 18 to 89 was performed. Participants assessed their overall attractiveness, the attractiveness of their individual body parts, and their life satisfaction. The relationship between the assessment of attractiveness of particular body parts and life satisfaction depended on age. The results indicate that not only overall self-attractiveness, but also the perceived attractiveness of particular body parts (different in each distinguished age group: 18-25, 30-45 and 60+) can be cons…
Predictors of decline in self-assessments of health among older people--a 5-year longitudinal study.
2001
Within the framework of the Evergreen project we examined how changes in several indicators of health and functioning and physical activity predicted a decline in self-assessments of health evaluated over a 5-year period in older people by two different measurements: self-rated health (SRH) and self-assessed change in health (SACH). The study group comprised all 75-year-old persons born in 1914 (N = 382) and living in Jyvaskyla, a town in central Finland. At baseline in 1989, 91.6%, and at follow-up 5 years later in 1994, 87.3% of those eligible participated in the interview and 77.2 and 71.3%, respectively, in the examinations in the study centre, focusing on different domains of health an…
Development of perceived competence, tactical skills, motivation, technical skills, and speed and agility in young soccer players
2015
The objective of this 1-year, longitudinal study was to examine the development of perceived competence, tactical skills, motivation, technical skills, and speed and agility characteristics of young Finnish soccer players. We also examined associations between latent growth models of perceived competence and other recorded variables. Participants were 288 competitive male soccer players ranging from 12 to 14 years (12.7 ± 0.6) from 16 soccer clubs. Players completed the self-assessments of perceived competence, tactical skills, and motivation, and participated in technical, and speed and agility tests. Results of this study showed that players' levels of perceived competence, tactical skill…
Analysis of a parabolic cross-diffusion population model without self-diffusion
2006
Abstract The global existence of non-negative weak solutions to a strongly coupled parabolic system arising in population dynamics is shown. The cross-diffusion terms are allowed to be arbitrarily large, whereas the self-diffusion terms are assumed to disappear. The last assumption complicates the analysis since these terms usually provide H 1 estimates of the solutions. The existence proof is based on a positivity-preserving backward Euler–Galerkin approximation, discrete entropy estimates, and L 1 weak compactness arguments. Furthermore, employing the entropy–entropy production method, we show for special stationary solutions that the transient solution converges exponentially fast to its…
Career goal-related success expectations across two educational transitions: A seven-year longitudinal study
2013
The purpose of this seven-year longitudinal study was to examine the trajectories of adolescents' career goal-related success expectations during two educational transitions. Altogether 850 (48% female, M Age = 16) participants reported their success expectations for their career-related goals, first in the last year of comprehensive school and four times during the following seven years. Overall, the success expectations showed a significant increase. However, there was considerable heterogeneity in the development of these expectations. Growth Mixture Modeling showed that four trajectories fitted the data best: high-increasing (78%), low-increasing (9%), decreasing (6%) and U-shaped (7%).…
Competent in Work and Love? Emerging Adults’ Trajectories in Dealing With Work–Partnership Conflicts and Links to Health Functioning
2013
In a 3-year longitudinal study on 989 emerging adults, we assessed self-efficacy in dealing with work–family conflicts and different indices of work and relationships characteristics (e.g., satisfaction, commitment, and stress). In addition, we assessed different indices of health functioning (e.g., sick days, body complaints, internalizing and externalizing symptoms, and well-being). Latent class growth analyses revealed three different trajectories of competence with work-to-partnership conflicts over time that were related to work, romantic relationships, and health. Emerging adults in the high stable group (characterized by high levels of self-efficacy in dealing with conflicts in work…
Perinatal stress events and burnout among midwives in Poland. The mediating role of self-efficacy
2021
Aim: The aim of the study was to check whether there is a link between perinatal stress events, self-efficacy, and burnout in a group of midwives. According to the Job Demands-Resources model (JD-R model), perinatal stress events may be linked to burnout, and self-efficacy can play a mediating role in this connection. Design: A quantitative longitudinal study. Methods: The research involved 99 midwives working in the Polish public health service. Results: Stepwise regression analysis showed a direct relationship between perinatal stress events and emotional exhaustion (β = 0.12; p = 0.02). The results of mediation analysis suggest that self-efficacy plays the role of mediator in the perinat…
Conflicto familia-trabajo, autoeficacia y cansancio emocional: un análisis de los efectos longitudinales
2015
A partir del modelo revisado Demandas-Recursos Laborales (2008) este artículo pone a prueba dos objetivos: primero, analizar la relación entre el conflicto trabajo-familia y el agotamiento emocional a través del tiempo y, segundo, identificar el papel de la autoeficacia profesional en esta relación. Se trata deun estudio longitudinal con dos recogidas de datos separados por un año en una muestra de militaresespañoles (n = 242). Se ponen a prueba tres modelos sobre la relación longitudinal entre el conflicto trabajo-familia y el cansancio emocional: el modelo causal normal, el modelo causal reverso y el modelo causal recíproco. A su vez, para probar el papel de la eficacia profesional en la …
Seamless Learning Environments in Higher Education with Mobile Devices and Examples
2016
The use of seamless learning environments that have the potential to support lifelong learning anytime and anywhere has become a reality. In this sense, many educational institutions have started to consider introducing seamless learning environments into their programs. The aim of this study is to analyze how various educational university programs implement the design elements for seamless learning environments with mobile devices. For that purpose, three cases involved in a Finnish teaching development project are explored by conducting semi-structured interviews with key participants. The themes of the interviews were related to the theoretical background for (mobile) seamless learning …