Sökning: "associations as a tool"

Visar resultat 1 - 5 av 87 avhandlingar innehållade orden associations as a tool.

1. 1. Significance of N2 fixing planktonic symbioses for open ocean ecosystems

   Författare :Marcus Stenegren; Rachel A. Foster; Agneta Andersson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nitrogen fixation; diazotrophs; symbiosis; DDA; cyanobacteria; qPCR; piecewise SEM; microarray; tropics; subtropics; marine; open ocean; Richelia; Calothrix; Marine Ecology; marin ekologi;

   Sammanfattning : Di-nitrogen (N2) fixers, also called diazotrophs, are able to reduce atmospheric N2 into bioavailable nitrogen, giving them an advantage in open ocean regions with low dissolved inorganic nitrogen concentrations. The focus of this thesis are three lineages of symbiotic heterocystous filamentous types (het-1, het-2 and het-3), that associate with several genera of microalgae called diatoms (collectively referred to as Diatom Diazotroph Associations, DDAs). LÄS MER

3. 2. Online Sexual Behaviours Among Swedish Youth : Characteristics, Associations and Consequences

   Författare :Linda S. Jonsson; Carl Göran Svedin; Margareta Hydén; Cathrine Hamilton-­Giachritsis; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Online; Internet; sexual behaviour; selling sex; sexting; youth; adolescents;

   Sammanfattning : Online sexual behaviours refer to sexual activities where the Internet and/or mobile phone are used. The aims of this thesis were to investigate young people and their experiences of different online sexual behaviours with regard to characteristics, associations and consequences, by using data from a representative sample of 3,503 Swedish youth (m= 18. LÄS MER

4. 3. Sensory qualities and culinary utility of produce : a path towards sustainable gastronomy

   Författare :Magnus Westling; Åsa Öström; Stefan Wennström; Michael Bom Frøst; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Culinary action; culinary arts; cultivated diversity; food design; food science; gastronomic potential; gastronomy; gray peas; meal science; sensory science;

   Sammanfattning : The underlying assumption throughout this thesis is that the continuity of a cultivated diversity can be strengthened by investigating its sensory qualities and specifying particular culinary utilities of landraces and cultivars. How can a foodstuff’s sensory qualities and culinary utility be explored, tested, and refined together with the food industry and the public meal? This thesis aims to create a path toward sustainable gastronomy with greater sensory variation that originate from a cultivated diversity. LÄS MER

5. 4. Letters & Bytes : Sociotechnical Studies of Distance Education

   Författare :Francis Lee; Ulf Mellström; Boel Berner; Adrian Mackenzie; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; sociology of technology; distance education; education; history of education; correspondence education; Learning Objects; standardization; actor-network theory; associations; translation; dispositif; tekniksociologi; distansutbildning; utbildning; korrespondensundervisning; lärobjekt; standardisering; aktörsnätverks teori; översättning; associering; dispositif; Technology and social change; Teknik och social förändring; Sociology; Sociologi; History of technology; Teknikhistoria; Education; Pedagogik; Informatics and systems science; Informatik och systemvetenskap;

   Sammanfattning : This dissertation studies the social aspects of technology in distance education trough the lens of history – in the form of correspondence education – and a possible future – in the form of a project of technical standardization, Learning Objects. The studied cases form a reflexive tool that allows the present of distance education to be seen in perspective. LÄS MER

7. 5. Measuring peer victimization and school leadership : A study of definitions, measurement methods and associations with psychosomatic health

   Författare :Lisa Hellström; Curt Hagquist; Robert Thornberg; Karlstads universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bullying; measurement methods; pedagogical leadership; psychosomatic health; Rasch analysis; Mobbning; mätmetoder; pedagogiskt ledarskap; psykosomatisk hälsa; Rasch analys; Public Health Science; Folkhälsovetenskap;

   Sammanfattning : The aim of this thesis is to explore methods for assessing peer victimization and pedagogical leadership in school.The thesis includes four studies. Study I and II are based on web-based questionnaires among 2, 568 students in grades 7, 8 and 9. LÄS MER