Search results for "FEM"
showing 10 items of 28965 documents
The Associations Between Leisure-Time Physical Activity and Academic Performance: A Twin Study
2021
Background: Both genetic and environmental influences have been shown to contribute to the association between physical activity and overall academic performance. The authors examined whether leisure-time physical activity (LTPA) shares genetic and environmental variances between spelling, essay writing, reading aloud, reading comprehension, and mathematics in early adolescence. Moreover, they investigated whether genetic polymorphisms associated with physical activity behavior affect these academic skills. Methods: Participants were 12-year-old Finnish twins (n = 4356–4370 twins/academic skill, 49% girls). Academic skills were assessed by teachers, and LTPA was self-reported. Polygenic sco…
Energy Drink Consumption Among Finnish Adolescents: Prevalence, Associated Background Factors, Individual Resources, and Family Factors.
2020
Objectives: Energy drink consumption among adolescents has become a notable global phenomenon, and has been associated with numerous negative health outcomes. In order to understand the popularity of energy drinks among adolescents, and to target interventions, it is important to identify the determinants underpinning consumption. Methods: The nationally representative data (cross-sectional) were drawn from the Health Behaviour in School-aged Children (HBSC) surveys, conducted in 2014 and 2018, each comprising 13- and 15-year-old Finnish adolescents (n = 7405). Results: Weekly energy drink consumption increased among Finnish adolescents between 2014 (18.2%) and 2018 (24.4%), especially amon…
The interplay between maternal homework involvement, task-avoidance, and achievement among adolescents.
2021
This study examined three aspects of maternal homework involvement (i.e., the quantity, quality, and source of initiative) and their direct and indirect associations with adolescents’ task-avoidant behavior in homework situations and academic achievement. The sample consisted of Finnish mothers and their adolescents who were transitioning from primary to lower secondary school. Mothers rated the quantity of their homework involvement (i.e., monitoring and help), quality of their homework involvement (i.e., autonomy support and psychological control), and source of initiative (i.e., mother- vs. adolescent-initiated monitoring and help) at the beginning of Grade 6. They also reported on adole…
Selective breeding for endurance running capacity affects cognitive but not motor learning in rats
2012
The ability to utilize oxygen has been shown to affect a wide variety of physiological factors often considered beneficial for survival. As the ability to learn can be seen as one of the core factors of survival in mammals, we studied whether selective breeding for endurance running, an indication of aerobic capacity, also has an effect on learning. Rats selectively bred over 23 generations for their ability to perform forced treadmill running were trained in an appetitively motivated discrimination-reversal classical conditioning task, an alternating T-maze task followed by a rule change (from a shift-win to stay-win rule) and motor learning task. In the discrimination-reversal and T-maze …
Negative and positive Kerr nonlinearity of air calibrated with transient molecular alignment
2009
Talk given by O. Faucher; International audience; Nonlinear electronic Kerr index of the major air constituents has been measured up to high order terms using transient molecular alignment as a reference. Sign reversal associated to negative nonlinearity is observed above a pulse intensity of 26 TW/cm^.2
Unravelling the Intertwined Atomic and Bulk Nature of Localised Excitons by Attosecond Spectroscopy
2021
The electro-optical properties of most semiconductors and insulators of technological interest are dominated by the presence of electron-hole quasi-particles, called excitons. The manipulation of excitons in dielectrics has recently received great attention, with possible applications in different fields including optoelectronics and photonics. Here, we apply attosecond transient reflection spectroscopy in a sequential two-foci geometry and observe sub-femtosecond dynamics of a core-level exciton in bulk MgF2 single crystals. Furthermore, we access absolute phase delays, which allow for an unambiguous comparison with theoretical calculations. Our results show that excitons surprisingly exhi…
The Changing Landscape for Stroke Prevention in AF: Findings From the GLORIA-AF Registry Phase 2
2017
BACKGROUND: GLORIA-AF (Global Registry on Long-Term Oral Antithrombotic Treatment in Patients with Atrial Fibrillation) is a prospective, global registry program describing antithrombotic treatment patterns in patients with newly diagnosed nonvalvular atrial fibrillation at risk of stroke. Phase 2 began when dabigatran, the first non-vitamin K antagonist oral anticoagulant (NOAC), became available.OBJECTIVES: This study sought to describe phase 2 baseline data and compare these with the pre-NOAC era collected during phase 1.METHODS: During phase 2, 15,641 consenting patients were enrolled (November 2011 to December 2014); 15,092 were eligible. This pre-specified cross-sectional analysis des…
Conciliazione vita-lavoro in Italia e in Europa
2020
Il saggio analizza le misure adottate, sia in ambito comunitario che interno, per dare risposta alle esigenze di conciliazione. Tali interventi sono stati caratterizzati da un’evoluzione determinata dall’affermazione del principio di condivisione egualitaria dei ruoli e delle responsabilità genitoriali all’interno della famiglia. The essay analyses the measures adopted to respond to the needs of conciliation, both at Community and national level. These interventions have been characterized by an evolution, determined by the affirmation of the principle of equitable sharing of roles and of parental responsibilities within the family.
Ortografi i finskspråkiga gymnasisters inlärarsvenska
1997
Funktionaalisia a posteriori virhearvioita Uzawan tyyppisille menetelmille kokoonpuristumattomien virtausten tapauksessa
2012
Stokesin yhtälöllä voidaan kuvata nesteiden ja kaasujen liikettä, jos liike on yksiulotteista tai hidasta. Stokesin yhtälö on yksinkertaistettu ja linearisoitu versio Navier-Stokesin yhtälöistä. Tässä tutkielmassa keskitytään kokoonpuristumattomiin ja viskoottisiin nesteisiin ja kaasuihin. Kokoonpuristumattomuus tarkoittaa sitä, että nesteen tai kaasun tiheys ei muutu ajan suhteen. Viskoottisuus taas tarkoittaa sitä, että nesteillä ja kaasuilla on sisäistä kitkaa, joka muodostuu, kun aineen osaset liikkuvat toistensa suhteen. Vaikka osittaisdifferentiaaliyhtälöiden tutkimus on edennyt viime vuosisadalla hyvinkin nopeasti, on analyyttisen ratkaisun löytäminen vaikeaa tai lähes poikkeuksetta …