Search results for "Longitudinal"
showing 10 items of 1501 documents
Evolved high aerobic capacity has context-specific effects on gut microbiota
2022
Publisher Copyright: Copyright © 2022 Hanhimäki, Watts, Koskela, Koteja, Mappes and Hämäläinen. Gut microbiota is expected to coevolve with the host's physiology and may play a role in adjusting the host's energy metabolism to suit the host's environment. To evaluate the effects of both evolved host metabolism and the environmental context in shaping the gut microbiota, we used a unique combination of (1) experimental evolution to create selection lines for a fast metabolism and (2) a laboratory-to-field translocation study. Mature bank voles Myodes glareolus from lines selected for high aerobic capacity (A lines) and from unselected control (C lines) were released into large (0.2 ha) outdo…
Die feinstruktur der fl�igelschuppen einiger Lycaeniden (Insecta, Lepidoptera)
1970
Green, blue and violet colours of Lycaenidae examined by us — with the exception of Rapala arata (Theclinae) — are due to iridescent scales which are arranged before a dark background. The iridescent scales are constructed according to the Urania-type and may be diverted from pigmented scales by laying in equidistant lamellae and little cuticular bars, which maintain the distance between the lamellae. The ribs in the longitudinal axis of the scales contain lamellae and bars only in the Plebejinae, in Lycaeninae and Theclinae they are small and sit on the plain upperside of the scale with a narrow base.
The Essence of Dynamic Capabilities and their Measurement
2016
The growing popularity of explaining firm performance through dynamic capabilities has motivated plenty of conceptual development in the field. However, empirical approaches to measuring dynamic capabilities have so far not been under comprehensive scrutiny. The authors; purpose is to assess the extent to which different ways of measuring dynamic capabilities in quantitative studies correspond to the theoretical essence of the concept, and develop recommendations for future research. They find that four types of operationalizations have been used: (1) managers’ evaluations; (2) financial data; (3) company's experience, actions and performance; and (4) managers’ or employees’ experience, act…
Student Engagement, Truancy, and Cynicism
2021
Abstract Truancy in upper secondary education is a widespread problem, which contributes significantly to school dropout risk. However, the underlying mechanisms of truancy have remained unstudied. This longitudinal study of 1853 Finnish students examined how initial levels and changes in student engagement from primary (Grade 6) to lower secondary school (Grades 7 and 9) predicted truancy in upper secondary education, and whether cynicism (losing interest in school) mediated the relationship between engagement and truancy. Growth curve models showed that high engagement levels in primary school and increases in engagement over time predicted less truancy in upper secondary education. Cynic…
A RAPID METHOD FOR CALCULATING THE TRANSVERSAL STRAIN IN THE MOIRE TECHNIQUE ALONG SECTIONS OF SYMMETRY
1970
An approximate rapid method is described for calculating in the moire technique the transversal strain directly from the longitudinal strain distribution across sections of symmetry. The method is based on evaluation of the load transmitted through the section and is corroborated by two examples.
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…
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…