Sökning: "Impact test"

Visar resultat 21 - 25 av 1064 avhandlingar innehållade orden Impact test.

1. 21. User engagement in Living Labs : Issues and concerns

   Författare :Abdolrasoul Habibipour; Anna Ståhlbröst; Diana Chronéer; John Sören Pettersson; Luleå tekniska universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; participatory design; user engagement; user engagement framework; user perspective; commitment; living lab; innovation; test; adoption; Information systems; Informationssystem;

   Sammanfattning : User engagement and the participatory design approach are well-established in information systems research for many years, and several studies have investigated the challenges of user engagement in the innovation processes. The majority of these studies have discussed participatory design activities – specifically user engagement –in an organizational context. LÄS MER

3. 22. Small Particles with Big Impact : Structural Studies of Viruses and Toxicological Studies of Nanodiamonds

   Författare :Anna Munke; Marvin Seibert; Kenta Okamoto; Filipe Maia; Inger Andersson; Nicola Stonehouse; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Chaetenuissarnavirus II; cryo-EM; CtenRNAV-II; Escherichia coli; Danio rerio; flash X-ray imaging; Marnaviridae; single-particle analysis; single-particle imaging; Sogarnavirus; virus evolution; virus structure; XFEL; zebrafish embryo; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

   Sammanfattning : Nanoparticles (NPs) can be found everywhere and their existence has both beneficial and harmful consequences for the environment and living beings. The investigations on which this thesis is based upon have contributed to an increased understanding of some of these particles and to the development of a method that could be used to study their structure. LÄS MER

4. 23. Deactivation of SCR catalysts - Impact of sulfur and the use of biofuels

   Författare :Johanna Englund; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Cu-SSZ-13; Cu-CHA; Catalyst deactivation; Activity test; DeNOx; Sulfur; NOx reduction; NH3-SCR; FAME; Emission control; HVO; Vanadia; Biofuel;

   Sammanfattning : In a near future, limits on CO2 emissions from vehicles will be introduced, which requires development of more fuel-efficient engines and most likely a transition towards the use of more biofuels. With the implementation of biofuels several issues could arise, one being the lack of fuel standards for these new type of fuels, leading to higher concentrations of catalyst poisons compared to conventional fossil fuels. LÄS MER

5. 24. Investigating and Validating Spoken Interactional Competence: Rater Perspectives on a Swedish National Test of English

   Författare :Linda Borger; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; interactional competence; Swedish national test of English; paired speaking test; Common European Framework of Reference for Languages CEFR ; socio-cognitive validation framework;

   Sammanfattning : This thesis aims to explore different aspects of validity evidence from the raters’ perspective in relation to a paired speaking test, part of a high-stakes national test of English as a Foreign Language (EFL) in the Swedish upper secondary school. Three empirical studies were undertaken with the purpose of highlighting (1) the scoring process, (2) the construct underlying the test format, and (3) the setting and test administration. LÄS MER

7. 25. Impact of moisture on long term performance of insulating products based on stone wool

   Författare :Tomás Vrána; Folke Björk; Per Ingvar Sandberg; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineral insulation; Stone wool; Material properties; Moisture transport; Heat transport; Test equipment; Moisture properties; Frost formation; Building engineering; Byggnadsteknik;

   Sammanfattning : Demands for energy have been increasing in the whole world. According to higher consumption, the price of energy rises yearly too. This evokes usage of insulating products in a wider range. LÄS MER