Search results for "aika"
showing 10 items of 1366 documents
Etenemisnopeudet ja sykkeet eritasoisilla suunnistajilla käyttäen satelliittipaikannusta
2006
Juha Nivukoski: Etenemisnopeudet ja sykkeet eritasoisilla suunnistajilla käyttäen satelliittipaikannusta. Liikuntafysiologian Pro gradu -tutkielma. Jyväskylän yliopisto. Liikuntabiologian laitos. Satelliitteihin perustuva GPS-paikannus (Global Positioning System) ja sen sovellukset ovat yleistyneet 2000-luvulla monilla eri elämänalueilla. Liikuntatieteissä laitteen antamia mahdollisuuksia on tutkittu hyvin vähän, koska GPS:n tarkkuuteen ja soveltuvuuteen suhtaudutaan vielä epäröiden. Tässä tutkimuksessa selvitettiin kevyen kannettavan GPS-laitteen soveltuvuutta ulkona tapahtuvan urheilusuorituksen analysointiin sekä GPS-laitteen antaman paikkatiedon perusteella selvitettiin koehenkilöiden k…
The relationship between leisure-time physical activity and stress on workdays with special reference to heart rate variability analyses
2016
The purpose of this study was to investigate how physical activity (PA), cardio- respiratory fitness, and body composition are associated with objective heart rate variability (HRV)-based indicators of stress and recovery on workdays. Additionally, the association of subjective self-reported stress with HRV-based stress was investigated. Samples of 81 healthy men (age 26–40 years), and 16 275 Finnish employees (6863 men and 9412 women; age 18–65 years) were assessed in the cross-sectional analyses. A sample of 221 overweight psychologically distressed individuals (36 men and 185 women; age 26–60 years) was examined in both cross-sectional and longitudinal analyses. HRV-based stress and reco…
Sähkönkulutuksen ennustaminen toimialoittain
2016
LOCAL CONTROL OF SOUND IN STOCHASTIC DOMAINS BASED ON FINITE ELEMENT MODELS
2011
A numerical method for optimizing the local control of sound in a stochastic domain is developed. A three-dimensional enclosed acoustic space, for example, a cabin with acoustic actuators in given locations is modeled using the finite element method in the frequency domain. The optimal local noise control signals minimizing the least square of the pressure field in the silent region are given by the solution of a quadratic optimization problem. The developed method computes a robust local noise control in the presence of randomly varying parameters such as variations in the acoustic space. Numerical examples consider the noise experienced by a vehicle driver with a varying posture. In a mod…
Social support in the workplace for physicians in specialization training
2018
ABSTRACT When becoming a specialist, learning-through-service plays a significant role. The workplace affords good opportunities for learning, but the service-learning period may also impose stress on phycisians in specialization training. In medical work, social support has proved to be a very important factor in managing stress. Social support may afford advantages also for learning and professional identity building. However, little was known about how social support is perceived by doctors in specialization training. This study aimed to understand the perceptions of physicians in specialization training regarding social support communication in their workplace during their learning-thro…
Equal access to the top? Measuring selection into finnish academia
2019
In this article, we draw a parallel between equality of opportunity in educational transitions and equality of opportunity in academic careers. In both cases, many methodological problems can be ameliorated by the use of longitudinal rather than cross-sectional data. We illustrate this point by using Finnish full-population register data to follow the educational and academic careers of the 1964–1966 birth cohorts from birth to the present day. We show how the Finnish professoriate is highly selected both in terms of parental background and in terms of gender. Individuals of different backgrounds differ greatly in the likelihood of completing different educational and academic transitions, …