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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Adapting building design to climate change for an office building in Stockholm through solar control techniques / Anpassa byggnadsdesign till klimatförändringar i en kontorsbyggnad i Stockholm genom solskyddstekniker

Costanzo, Matteo January 2020 (has links)
Climate change will affect many human activities and sectors. Among those, the built environment will face several challenges with respect to the varying climate conditions. The present study investigated the global warming impacts on energy demand and indoor climate comfort for an office building in Stockholm. Considering a service life of 50 years, the future climate conditions were investigated for the only air temperature increase in 2070, in accordance with the medium forecasted greenhouse gas emissions scenario provided by the International Panel on Climate Change (IPCC). Another climate morphing approach was adopted to develop the climate file for the year 2080 considering the variation of all the weather parameters. Three different passive cooling solutions, such as external roller shade, electrochromic glazing, and internally ventilated shading, have been implemented in the case study building to decrease the cooling demand. The characteristics of the strategies were preliminarily assessed and then implemented into the building energy simulation software IDA-ICE to evaluate the energy performances with respect to the different climates. The results indicated that an increment of the cooling demand and a reduction of the heating usage will be experienced in the future. The different morphing approaches displayed the inherent uncertainties when future evaluations are performed, although similar weather patterns were found. The improvement of the solar and optical properties, such as the introduction of the exhaust air extraction and the electrochromic technology, implied a lower cooling and ventilation usage. The EC technology reported the lowest cooling demand, while the internally ventilated shading option outperformed the others in terms of annual energy consumption. / Klimatförändringar kommer att påverka många mänskliga aktiviteter och sektorer. Bland dem kommer den byggda miljön att möta flera utmaningar med avseende på de olika klimatförhållandena. Denna studie undersökte effekterna av den globala uppvärmningen på energibehovet och inomhusklimatkomforten för en kontorsbyggnad i Stockholm. Med hänsyn till en livslängd på 50 år undersöktes de framtida klimatförhållandena för ökningen av lufttemperaturen utomhus till 2070, i enlighet med det medelprognoserade växthusgasutsläppsscenariot som tillhandahålls av International Panel on Climate Change (IPCC). En annan klimatförändringsmetod antogs för att utveckla klimatfilen för år 2080 med tanke på variationen i alla väderparametrar. Tre olika passiva kyllösningar, såsom utvändigt solskydd (vertikalmarkis med screenväv), elektrokromt glas och invändigt ventilerat solskydd, har implementerats i fallstudiebyggnaden för att minska kylbehovet. Karaktären av strategierna utvärderades preliminärt och implementerades sedan i programvaran för byggenergisimulering IDA-ICE för att utvärdera energiprestanda med avseende på de olika klimaten. Resultaten indikerade att en ökning av kylbehovet och en minskning av värmeanvändningen kommer att ske i framtiden. De olika klimatförändringsmetoderna visade de inneboende/medföljande osäkerheterna när framtida utvärderingar utförs, även om liknande vädermönster hittades. De passiva kyllösningarnas reducering av total solenergitransmission, såsom införandet av frånluftsutsug och den elektrokroma tekniken, innebar en lägre kyl- och ventilationsanvändning. EC-tekniken rapporterade det lägsta kylbehovet, medan det invändiga ventilerade solskyddet överträffade de andra när det gäller årlig energiförbrukning.
22

"Du gjorde fel, säg förlåt till din kamrat!!!" : En diskursanalys om hur makt speglas vid konflikter och konflikthantering

Jacobsson, Frida, Tubic, Selma January 2018 (has links)
The purpose of this study is to see the factors that shape and create the desirable child in the teachers' speech regarding conflict and conflict management. We have chosen to use discourse analysis based on social constructionism and poststructuralistic language theory to see the discourses that had an active part in the teachers' approach.  We have chosen to use Foucault's power theory to investigate what power structures and power relationships are shown in the pedagogues' speech about conflicts. We have also chosen to use Eva Johansson's study (2013) on children's perspective to investigate whose perspective is expressed in conflict management situations. To collect the empirical data, we have chosen to use qualitative interviews that we analyzed from a discourse analysis perspective. What we have found in the study is that the desirable child is created in conflicts through interconnected discourses that reacts and interacts. These discourses are based on the educators' views on conflicts, rules and the environment, and form the corners of our model which can be seen in the discussion where we highlighted this. The pursuit of the desirable and democratic child as an ideal is conveyed by the curriculum and followed by the educators. The study's results show that the educators assume a traditional view of conflicts and their management, despite attempting to approach an alternative view.

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