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Institution

University of Jyväskylä

EducationJyvaskyla, Finland
About: University of Jyväskylä is a education organization based out in Jyvaskyla, Finland. It is known for research contribution in the topics: Population & Neutron. The organization has 8066 authors who have published 25168 publications receiving 725033 citations. The organization is also known as: Jyväskylän yliopisto & Kasvatusopillinen korkeakoulu.


Papers
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Journal ArticleDOI
TL;DR: The results indicate that interventions aimed at reducing turnover intentions and increasing work engagement by increasing ERI should consider OVC and POS.
Abstract: The present study is aimed at examining the combined effects of effort-reward imbalance (ERI), overcommitment (OVC), and perceived organizational support (POS) on turnover intentions and work engagement, among Finnish managers (n = 1,301). Consequently, the study contributes to the research literature by examining how the ERI-outcomes relationship was dependent simultaneously on OVC and POS. The results showed that ERI x OVC x POS interaction was significant only for turnover intentions. The ERI-turnover intentions relationship was strongest under conditions of high OVC and low POS. In addition, the relationship between ERI and decreased work engagement, especially dedication, was strengthened among overcommitted managers, compared to their less committed counterparts. Altogether, the results indicate that interventions aimed at reducing turnover intentions and increasing work engagement by increasing ERI should consider OVC and POS.

175 citations

Journal ArticleDOI
TL;DR: In this paper, the problem of quality in action research narratives is addressed, and some principles for assessing the quality of narrative research reports are proposed, both at a theoretical and practical level.
Abstract: Along with the narrative turn in social sciences, the quality of research has become a more and more intricate issue. Action research reports are often narratives, located in the context of the evolving experiences of those involved. In this paper, the problem of quality in action research narratives is addressed, and some principles for assessing the quality of narrative research reports are proposed. The issue is explored both at a theoretical‐conceptual level and through a number of practical cases from the narrative‐biographical research project TeacherLife. As narrative researchers, the authors are not willing to accept an extremely relativistic stand. They argue the need for conceptual tools to grasp the problem of quality of narratives, but tools different from the traditional concepts of validity and reliability, which harbour markedly positivistic connotations. They propose five principles for judging the quality of action research from a narrative point of view. According to these principles, a ...

175 citations

Journal ArticleDOI
TL;DR: In this article, the long-term stability of as-synthesized CsPbBr3 perovskite quantum dots (QDs) suspended in toluene at various environmental conditions was investigated.
Abstract: Due to their superior photoluminescence (PL) quantum yield (QY) and tunable optical band gap, all-inorganic CsPbBr3 perovskite quantum dots (QDs) have attracted intensive attention for the application in solar cells, light emitting diodes (LED), photodetectors and laser devices. In this scenario, the stability of such materials becomes a critical factor to be revealed. We hereby investigated the long-term stability of as-synthesized CsPbBr3 QDs suspended in toluene at various environmental conditions. We found light illumination would induce drastic photo-degradation of CsPbBr3 QDs. The steady-state spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD) verified that CsPbBr3 QDs tend to aggregate to form larger particles under continuous light soaking. In addition, decreasing PL QY of the QDs during light soaking indicates the formation of trap sites. Our work reveals that the main origin of instability in CsPbBr3 QDs and provides reference to engineer such QDs towards optimal device application.

175 citations

Journal ArticleDOI
TL;DR: The results indicate that there is no single trait that can be termed ‘immunocompetence’ and that an understanding of trade-offs between the different types of immune function and life-history traits will require a more detailed analysis of the physiological basis of the traits.
Abstract: Summary 1Immune defence has recently been viewed as a life-history trait that shows trade-offs with other life-history traits. However, studies exploring correlations between different components of immune defence and other life-history traits are scarce. 2In this study, two measures of immune function, body size, and development time were studied in the Mediterranean Field Cricket, Gryllus bimaculatus. 3We found no differences between the sexes, but differences in the correlation between the measure of immune function, development time, and body size. In both sexes, encapsulation rate was negatively correlated with body size and development time, whereas lytic enzyme activity was positively correlated with these two traits. Furthermore, encapsulation rate and lytic activity were themselves negatively correlated. 4These results indicate that there is no single trait that can be termed ‘immunocompetence’ and that an understanding of trade-offs between the different types of immune function and life-history traits will require a more detailed analysis of the physiological basis of the traits.

175 citations

Journal ArticleDOI
TL;DR: Current reproductive function (questionnaires/blood hormone concentrations) appears to provide a more objective and accurate marker of optimal energy for health than the more error-prone and time-consuming dietary and training estimation of EA.
Abstract: We aimed to (a) report energy availability (EA), metabolic/reproductive function, bone mineral density, and injury/illness rates in national/world-class female and male distance athletes and (b) investigate the robustness of various diagnostic criteria from the Female Athlete Triad (Triad), Low Energy Availability in Females Questionnaire, and relative energy deficiency in sport (RED-S) tools to identify risks associated with low EA. Athletes were distinguished according to benchmarks of reproductive function (amenorrheic [n = 13] vs. eumenorrheic [n = 22], low [lowest quartile of reference range; n = 10] versus normal testosterone [n = 14]), and EA calculated from 7-day food and training diaries ( 30 kcal·kg−1 fat-free mass·day−1). Sex hormones (p < .001), triiodothyronine (p < .05), and bone mineral density (females, p < .05) were significantly lower in amenorrheic (37%) and low testosterone (40%; 15.1 ± 3.0 nmol/L) athletes, and bone injuries were ∼4.5-fold more prevalent in amenorrheic (effect size = 0.85, large) and low testosterone (effect size = 0.52, moderate) groups compared with others. Categorization of females and males using Triad or RED-S tools revealed that higher risk groups had significantly lower triiodothyronine (female and male Triad and RED-S: p < .05) and higher number of all-time fractures (male Triad: p < .001; male RED-S and female Triad: p < .01) as well as nonsignificant but markedly (up to 10-fold) higher number of training days lost to bone injuries during the preceding year. Based on the cross-sectional analysis, current reproductive function (questionnaires/blood hormone concentrations) appears to provide a more objective and accurate marker of optimal energy for health than the more error-prone and time-consuming dietary and training estimation of EA. This study also offers novel findings that athlete health is associated with EA indices.

175 citations


Authors

Showing all 8239 results

NameH-indexPapersCitations
Brenda W.J.H. Penninx1701139119082
Mika Kivimäki1661515141468
Jaakko Kaprio1631532126320
Marvin Johnson1491827119520
Stanislas Dehaene14945686539
Roger Jones138998114061
Zubayer Ahammed12991259811
James Alexander12988675096
Matti J Kortelainen128118680603
Madan M. Aggarwal12488356065
Joakim Nystrand11765850146
Robert U. Newton10975342527
Dieter Røhrich10263735942
Keijo Häkkinen9942131355
Dong Jo Kim9849736272
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20241
202390
2022286
20211,666
20201,684
20191,506