Search results for "Secondary"
showing 10 items of 1765 documents
Quasiconformal geometry and removable sets for conformal mappings
2020
We study metric spaces defined via a conformal weight, or more generally a measurable Finsler structure, on a domain $\Omega \subset \mathbb{R}^2$ that vanishes on a compact set $E \subset \Omega$ and satisfies mild assumptions. Our main question is to determine when such a space is quasiconformally equivalent to a planar domain. We give a characterization in terms of the notion of planar sets that are removable for conformal mappings. We also study the question of when a quasiconformal mapping can be factored as a 1-quasiconformal mapping precomposed with a bi-Lipschitz map.
Nanoscale probing of the supramolecular assembly in a two‐component gel by near‐field infrared spectroscopy
2023
The design of soft biomaterials requires a deep understanding of molecular self-assembly. We introduce here a nanoscale infrared (IR) spectroscopy study of a two-component supramolecular gel to assess the system´s heterogeneity and supramolecular assembly. In contrast to far-field IR spectroscopy, near-field IR spectroscopy revealed differences in the secondary structures of the gelator molecules and non-covalent interactions at three distinct nano-locations of the gel network. A β-sheet arrangement is dominant in single and parallel fibres with a small proportion of an α-helix present, while the molecular assembly derives from strong hydrogen bonding. However, at the crossing point of two …
The effects of post-pasture woody plant colonization on soil and aboveground litter carbon and nitrogen along a bioclimatic transect.
2013
Abstract: We investigated the effects of woody plant colonization of abandoned pastures on soil and litter organic carbon (C) stocks and nitrogen (N) content along a bioclimatic transect in a semi-arid environment (Sicily, Italy). Soil samples were taken in three successional stages (grazed pasture, shrubland, forest) within each of three bioclimates (supramediterranean - “supra”, mesomediterranean - “meso”, thermomediterranean - “thermo”). Organic C and N in litter and soil (0-10 cm and 10-30 cm depth) were determined, as well as soil bulk density. Especially at 0-10 cm depth, changes in C and N contents along successional stages differed among bioclimates. Soil organic carbon (SOC) stock …
Conservation value of forest plantations for bird communities in western Kenya
2008
Tree plantations of native and exotic species are frequently used to compensate for forest loss in the tropics. However, these plantations may support lower species diversity and different communities than natural forest. We therefore investigated bird communities in stands of natural forest, different types of tree plantations and secondary forest in Kakamega Forest, western Kenya. We compared birds differing in habitat specialisation, i.e. forest specialists, generalists, and visitors. We recorded significant differences in mean species richness and number of individuals among the different forest types. Stands of natural forest and plantations of indigenous tree species comprised more sp…
High seedling recruitment of indigenous tree species in forest plantations in Kakamega Forest, western Kenya
2009
Tree plantations are often used to compensate for the destruction and conversion of natural forests in the tropics. An important question is whether these plantations allow for the regeneration of indigenous tree species and are expected to transform into more natural forests in the future. To evaluate the potential of differently managed forest types for seedling recruitment of indigenous tree species we studied structural characteristics as well as tree and seedling communities in stands of natural forest, different types of tree plantations and secondary forest in Kakamega Forest, western Kenya. Forest types differed considerably in structural characteristics and tree composition with st…
Enseñanza de las ciencias : revista de investigación y experiencias didácticas
2021
This research focuses on teacher training in the Master's Degree in Secondary Educa- tion Teaching. The teaching guides of the specialisations of Biology and Geology and Physics and Che- mistry of the Master's Degree were analysed in order to know to what extent Education for Sustaina- bility (EfS) is present. Collaborative teams of teachers were arranged so as to promote the acquisition of competences in Sustainability among the training goals and to encourage resources and procedures for their effective achievement. This paper includes contributions that try to promote attention to EfS in Secondary School teacher training. Esta investigación se enmarca en la formación del profesorado en e…
A person-oriented approach to sport and school burnout in adolescent student-athletes: The role of individual and parental expectations
2017
Abstract Objectives The present study aimed to examine what kind of burnout profiles exist among student-athletes based on their sport and school burnout symptoms. Moreover, it was investigated whether athletes' expectations of success in sport and school, on the one hand, and parental expectations, on the other hand, were predictors of the likelihood of the athlete to show a certain profile, after taking into account the effects of gender, grade point average, type of sport, and level of competition. Design and methods The participants were 391 student-athletes (51% females) from six different upper secondary sport schools in Finland, and 448 parents (58% mothers). The athletes filled in q…
Symptoms of psychological ill-being and school dropout intentions among upper secondary education students : a person-centered approach
2020
A person-centered approach was used to identify the profiles of symptoms of psychological ill-being among Finnish upper secondary education students (N = 2889); to examine whether gender and educational track (i.e., academic or vocational) are associated with these profiles; and to investigate the role of profiles in school dropout intentions. Using latent profile analysis, one asymptomatic profile (normative, 79.2%) and three symptomatic profiles (internalizing symptoms, 9.1%; externalizing symptoms, 9.1%; and comorbid symptoms, 2.6%) were identified. Boys in the vocational track were overrepresented in the externalizing-symptoms profile, whereas girls in both tracks were overrepresented i…
What is important in history teaching? Student class teachers’ conceptions
2020
In Finland, history is taught in comprehensive schools at both primary and secondary levels. In primary schools, teachers are qualified class teachers who study one or two history courses during their teacher education. The amount of history taught in teacher education is limited, but student class teachers have studied history while at comprehensive school and general upper secondary school, and they have lived experience of historical cultures as members of different groups and communities. Thus, they have conceptions of what history teaching in school is, and what it should be. In this article, student class teachers’ conceptions of teaching history were examined using data (n=92) consi…
What’s the name of the game? : Historiallinen empatia ja pelillisyys historian opetuksessa
2019
Historian opetuksen yhteydessä on viimeisten kahden vuosikymmenen aikana puhuttu erityisesti opetuksen suuntaamisesta sisältöjen opettamisesta historian taitojen ja demokraattisena kansalaisena toimimisen suuntaan. Tavoitteet edellyttävät myös käytäntöjen muuttumista. Tässä artikkelissa tarkastellaan lukion historian opetusta opetuskokeilun kautta. Kokeilussa hyödynnettiin pelillisyyttä sekä historiallista empatiaa. Kahdeksan tuntia kestäneen pelin aikana opiskelijoiden tehtävänä oli konstruoida tietoa vuonna 1957 tapahtuneesta ampumavälikohtauksesta presidentin kesäasunnolla Kultarannassa. Aineisto kerättiin opetuskokeilun yhteydessä (N = 30 lukiolaista) kyselylomakkeen ja haastattelun avu…