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  • 301.
    Boustedt, Jeanette
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Eklöf Torp, Anna
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Att skapa innehåll som engagerar användare på Facebook och Instagram2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this report we describe how planning, producing and publishing contents for social media can be made for a company in the construction business. The company, which we have chosen to call Build AB, assigned their social media accounts to us during five weeks with the desire for increased involvement on the platforms. This report describes the line of action to meet their desire and also presents the results that have been achieved. The process of the project consisted of five key elements – workshop, developing a strategy, developing a schedule, producing the content and publishing. Our result shows that the involvement on Build AB’s Facebook page and Instagram page increased during the five weeks of the project.

  • 302.
    Boustedt, Jeanette
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Larsson, Felicia
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Netflix ur ett användarperspektiv: En kvalitativ studie om Binge Watching, tittarvanor och teknikens betydelse2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The study aims to gain a deeper understanding of how the users viewing habits are influenced by Netflix design and technology, and whether they encourage the user to Binge Watching.

    Theory: The study mainly uses the theory and research by Sidneyeve Matrix (2014) on the technical phenomenon Binge Watching from the article “The Netflix Effect: Teens, Binge Watching and on Demand Media Trends” and the theory about the use qualities by Jonas Löwgren (2002) from the article “The use qualities of digital designs, draft 1.0”. The research on technological developments by Gunnar Nygren and Ingela Wadbring (2013) from the publication “På väg mot medievärlden 2020” is also used in this study.

    Method: The study is based on a qualitative research method based on individual in-depth interviews.

    Results: The result analysis indicates that Netflix technologies and features have a transparent impact on users and their viewing habits. The informants felt that they without these features would not have used the service to the same extent and that loyalty and emotional commitment was established due to the many tactics Netflix used to improve the personal user experience. The technical features have also resulted in an increased Binge Watching for all of the informants who also often view more episodes of a series than originally thought. It also became clear that it was the technology, features and wider range that made Netflix the most preferred VoD service among the informants.

  • 303.
    Bowers, John
    et al.
    KTH / University of Manchester , U.K.
    Hellström, Sten-Olof
    KTH.
    Jää-Aro, Kai-Mikael
    KTH.
    Making Lightwork: The Algorithmic Performance of Virtual Environments1998In: Constructing and Manipulating the Virtual: Gesture Transformation, Soundscaping and Dynamic Environments for Extended Artistic Performance, Stockholm: NADA, Tekniska högskolan , 1998, , p. 14p. 5-19Chapter in book (Other academic)
  • 304.
    Bowers, John
    et al.
    KTH.
    Hellström, Sten-Olof
    KTH.
    Jää-Aro, Kai-Mikael
    KTH.
    Supporting Event Management by Sonifying Participant Activity1999In: Production Tools for Electronic Arenas: Event Management and Content Production : eRENA : Deliverable D4.3/4.4, 1999, p. 80-98Chapter in book (Other academic)
  • 305.
    Bowers, John
    et al.
    KTH.
    Jää-Aro, Kai-Mikael
    KTH.
    Blink: Exploring and Generating Content for Electronic Arenas1999In: Production Tools for Electronic Arenas: Event Management and Content Production : eRENA : Deliverable D4.3/4.4, 1999, p. 109-128Chapter in book (Other academic)
  • 306.
    Bowers, John
    et al.
    KTH.
    Jää-Aro, Kai-Mikael
    KTH.
    Hellström, Sten-Olof
    KTH.
    Carlzon, Malin
    KTH.
    Event Management in Electronic Arenas by Visualising Participant Activity and Supporting Virtual Camera Deployment1999In: Production Tools for Electronic Arenas:: Event Management and Content Production : eRENA : Deliverable D4.3/4.4, 1999, , p. 22p. 58-79Chapter in book (Other academic)
  • 307.
    Bowers, John
    et al.
    KTH.
    Jää-Aro, Kai-Mikael
    KTH.
    Hellström, Sten-Olof
    KTH.
    Hoch, Michael
    ZKM, Karlsruhe, Germany.
    Whitfield, Greg
    University of Nottingham, Nottingham, UK.
    Production Support Tools for Electronic Arenas: Using Tangible Interfaces for Media Editing2000In: Production and Management of Events in Electronic Arenas: eRENA ESPRIT Project 25379 Workpackage 4 Deliverable D4.5, Stockholm: NADA, Tekniska högskolan , 2000, , p. 29p. 41-69Chapter in book (Other academic)
  • 308.
    Bradshaw, Clare
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies. Stockholm University.
    Golz, A. -L
    Stockholm University.
    Gustafsson, Kerstin
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Coastal ecosystem effects of increased summer temperature and contamination by the flame retardant HBCDD2017In: Journal of Marine Science and Engineering, E-ISSN 2077-1312, Vol. 5, no 2, p. -20, article id 18Article in journal (Refereed)
    Abstract [en]

    The combined effects of ocean warming and contaminants on marine ecosystems are poorly understood. In this study, we exposed model ecosystems comprising typical shallow coastal Baltic Sea communities to elevated temperature (+5 °C) and the flame retardant hexabromocyclododecane (HBCDD), both singly and in combination, for 13 days. Higher temperatures caused the release of PO4 from the sediment, which in turn stimulated the growth of the cyanobacteria Dolichospermum sp. This in turn led to an increase in the copepod Acartia bifilosa and other indirect effects in the plankton, interpreted as being caused by changes in predation, grazing, and competition. Elevated temperatures also stimulated benthic primary production and increased production of benthic mollusk larvae. Although increased temperature was the dominant driver of effects in these systems, HBCDD also appeared to have some effects, mainly in the zooplankton (both direct and indirect effects) and benthic meiofauna (an interactive effect with temperature). Although the study used model ecosystems, which are an approximation of field conditions, it highlights that interactive ecosystem effects between two stressors are possible and demonstrates the ecological and temporal complexity of such responses. Such unpredictable responses to warming and contaminants are a major challenge for ecosystem management to deal with multistressor situations in the Baltic Sea. 

  • 309.
    Bradshaw, Clare
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies. Stockholm University.
    Näslund, J.
    AquaBiota Water Research, Stockholm.
    Hansen, J.
    AquaBiota Water Research, Stockholm / Stockholm University.
    Kozlowsky-Suzuki, B.
    Universidade Federal Do Estado Do Rio de Janeiro, Brazil.
    Sundström, B.
    Gustafsson, Kerstin
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Hexabromocyclododecane affects benthic-pelagic coupling in an experimental ecosystem2015In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 206, p. 306-314Article in journal (Refereed)
    Abstract [en]

    Hexabromocyclododecane (HBCDD) is an additive brominated flame retardant and a recognized PBT chemical. However, little is known about its effects on coastal species, and even less on ecosystem effects. We investigated the dose-response effects of HBCDD over 8 months in 1000 L experimental mesocosms assembled from coastal Baltic Sea ecosystem components. HBCDD was added via spiked plankton material and a range of structural and functional endpoints were measured during the experiment. Increasing HBCDD concentration decreased the biomass of large Macoma balthica, resulting in a decreased recirculation of nutrients to the water. Changes in plankton communities were also observed, either due to direct toxic HBCDD effects or indirect via changes in benthic-pelagic coupling of nutrients. Such complex ecosystem responses can only be quantified and understood by using realistic experimental set-ups, and including knowledge of system-specific ecological interactions. This is the first study of HBCDD effects on ecosystem level.

  • 310.
    Bradshaw, Clare
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies. Stockholm University.
    Strid, Anna
    Stockholm University.
    von Stedingk, Hans
    Stockholm University.
    Gustafsson, Kerstin
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Effects of benthos, temperature and dose on the fate of HBCDD in experimental coastal ecosystems2015In: Environmental Toxicology and Chemistry, ISSN 0730-7268, E-ISSN 1552-8618, Vol. 34, no 6, p. 1246-1257Article in journal (Refereed)
    Abstract [en]

    We studied the fate of the brominated flame retardant hexabromocyclododecane (HBCDD) added in a particulate suspension to experimental ecosystems assembled from brackish (Baltic Sea) coastal bays. Two experiments examined how A) benthic macrofauna (over 21 d), and B) increased temperature (14 d), affected HBCDD concentrations and fractionation of α, β and γ diastereomers in the water, sediment and biota. A third experiment (C) run over three seasons (231 d), studied the effect of HBCDD dose on the same endpoints. In all treatments of the three experiments, HBCDD partitioned mainly to the sediment, and this proportion increased with time. Presence of macrofauna tended to increase the HBCDD concentration in the sediment and decreased its concentration in the water. Increased temperature (+5 °C) decreased the amount of HBCDD in sediment and water but not in the filter- and deposit-feeding infaunal bivalves (Macoma balthica). The partitioning between water, sediment and biota was not concentration dependent. In all treatments, sediment became enriched in γ-HBCDD, M. balthica in α-HBCDD and water in α- and β-HBCDD. Bioaccumulation of HBCDD in M. balthica was high in all experiments (logBSAF > 1.25), the α diastereomer contributing the most (logBSAF 2.1 to 5.2). There is a risk of trophic transfer of HBCDD from benthic to pelagic food webs, and secondary poisoning of marine consumers. This article is protected by copyright. All rights reserved.

  • 311.
    Bragesjö, Eva
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Koloniträdgårdar och näringsläckage: En studie inom Drevvikens tillrinningsområde i Stockholm2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to investigate if allotment gardens in the Drevviken area leak nutrients into nearby lakes and streams. The basis for the study comes from a qualitative interview with three representatives from the Environmental Administration in Stockholm Municipality, as well as literature.

    The results show that there is a problem that the colonists use their own wastewater solutions which are not allowed under their lease agreement. Stockholm City is committed that running water still will not be allowed to occur despite efforts made ​​by Skarpnäcks stadsdelsnämnd of designing good wastewater solutions for cottages in the allotment areas. These wastewater solutions were developed over two years within the project Ability to organize drains in parts of the Listudden allotment area.

    The only action that presently exists is to follow the lease agreement and problems with leaking allotment gardens would no longer be a problem. However, no efforts to combat the problem are being made. No inventories of sewage treatment at the allotments are made ​​today, and no information is distributed to colonists on what applies.  In the action programs concerning Drevviken, the basis for the study, inventory of sewage treatment at the allotment areas and information to the colonists are proposed.

    The results also show a difficulty to give a satisfactory answer to the question if allotment gardens leak nutrients. Probably they do leak but the amount of diffuse runoff is difficult to measure and would be very time consuming to study. 

  • 312. Bratic, Ivana
    et al.
    Hench, Jürgen
    Södertörn University, School of Life Sciences.
    Henriksson, Johan
    Södertörn University, School of Life Sciences, Molecular biology.
    Antebi, Adam
    Bürglin, Thomas R.
    Trifunovic, Aleksandra
    Mitochondrial DNA level, but not active replicase, is essential for Caenorhabditis elegans development2009In: Nucleic Acids Research, ISSN 0305-1048, E-ISSN 1362-4962, Vol. 37, no 6, p. 1817-1828Article in journal (Refereed)
    Abstract [en]

    A number of studies showed that the development and the lifespan of Caenorhabditis elegans is dependent on mitochondrial function. In this study, we addressed the role of mitochondrial DNA levels and mtDNA maintenance in development of C. elegans by analyzing deletion mutants for mitochondrial polymerase gamma (polg-1(ok1548)). Surprisingly, even though previous studies in other model organisms showed necessity of polymerase gamma for embryonic development, homozygous polg-1(ok1548) mutants had normal development and reached adulthood without any morphological defects. However, polg-1 deficient animals have a seriously compromised gonadal function as a result of severe mitochondrial depletion, leading to sterility and shortened lifespan. Our results indicate that the gonad is the primary site of mtDNA replication, whilst the mtDNA of adult somatic tissues mainly stems from the developing embryo. Furthermore, we show that the mtDNA copy number shows great plasticity as it can be almost tripled as a response to the environmental stimuli. Finally, we show that the mtDNA copy number is an essential limiting factor for the worm development and therefore, a number of mechanisms set to maintain mtDNA levels exist, ensuring a normal development of C. elegans even in the absence of the mitochondrial replicase.

  • 313.
    Bredenberg, Johan
    et al.
    Södertörn University, Avdelning Naturvetenskap. Karolinska Institutet.
    Nilsson, L
    Karolinska Institutet.
    Conformational states of the glucocorticoid receptor DNA-binding domain from molecular dynamics simulations2002In: Proteins: Structure, Function, and Bioinformatics, ISSN 0887-3585, E-ISSN 1097-0134, Vol. 49, no 1, p. 24-36Article in journal (Refereed)
    Abstract [en]

    Molecular dynamics simulations (MD) have been performed on variant crystal and NMR-derived structures of the glucocorticoid receptor DNA-binding domain (GR DBD). A loop region five residues long, the so-called D-box, exhibits significant flexibility, and transient perturbations of the tetrahedral geometry of two structurally important Cys4 zinc finger are seen, coupled to conformational changes in the D-box. In some cases, one of the Cys ligands to zinc exchanges with water, although no global distortion of the protein structure is observed. Thus, from MD simulation, dynamics of the D-box could partly be explained by solvent effects in conjunction with structural reformation of the zinc finger.

  • 314.
    Bredenberg, Johan
    et al.
    Södertörn University, Avdelning Naturvetenskap.
    Nilsson, L
    Modeling zinc sulfhydryl bonds in zinc fingers2001In: International Journal of Quantum Chemistry, ISSN 0020-7608, E-ISSN 1097-461X, Vol. 83, no 3-4, p. 230-244Article in journal (Refereed)
    Abstract [en]

    Molecular dynamics simulations have been carried out employing three different model descriptions of the zinc sulfhydryl interactions in class II fingers. One bonded and two nonbonded models were studied. Two variant structures of the glucocorticoid receptor DNA-binding; domain and a NMR structure from a fragment of methionyl-tRNA synthetase were subjected to long-time MD simulations with these models. Our analysis is focused on comparison with experimental and quantum mechanical data, concerning the local Zn-finger and overall structural and dynamic properties for these models. All models performed M ell, but the nonbonded models appeared to reproduce the protein dynamics in better agreement with experimental data than does the bonded description.

  • 315.
    Breivik, Moa
    Södertörn University, School of Life Sciences, Environmental science.
    En utvärdering av Länsstyrelsen i Jämtlands läns uppföljning av den hotade orkidén brunkulla2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Swedish agriculture has gone through major changes of practices in the last century. Traditional haymaking and grazing have almost ceased and the land-use change is causing a loss of habitat for many plants and animals. These semi-natural landscapes belong to the most diverse plant communities in Sweden and many pastures and meadows are threatened by overgrowth. In this paper, I study the Jämtland County Administrative Board´s monitoring of the endangered Black Vanilla Orchid (Gymnadenia nigra) which is a grassland species in sharp decline. The study is based on interviews with employees of the Jämtland County Administrative Board and on the inventory data that has been gathered in the monitoring project. I have evaluated if the collected data can fulfil the original purpose of the monitoring project. I have studied and analysed the data and monitoring methodology in relation to scientific advice, and performed statistical tests. I have found that the monitoring method was unsuccessful in addressing the underlying purpose. In combination with the short period of monitoring, it is not possible to evaluate the effect of management and other environmental variables on the status of G. nigra.

  • 316. Brenden, N.
    et al.
    Böhme, Jan
    Södertörn University, Avdelning Naturvetenskap. Karolinska Institute.
    Differential MHC expression requirements for positive selection of separate TCR Vb families1999In: Immunogenetics, ISSN 0093-7711, E-ISSN 1432-1211, Vol. 49, no 1, p. 1-6Article in journal (Refereed)
    Abstract [en]

    Positive selection has been proposed to be involved in protection from diabetes. We examined positive selection by fluorescence-activated cell sorter analyses in thymocytes of protected and susceptible E-transgenic and non-transgenic NOD mice. Three Vb families showed positive selection in E-transgenic mice. Vb6+CD4+ and Vb10+CD4+ thymocytes were found at higher frequencies in both protected NOD-Ea and susceptible NOD-DY mice. The increased frequencies of Vb13+CD8+ thymocytes were found in protected NOD-Ea mice only, and not in susceptible NOD-DY transgenic mice. These three Vb families were further examined in bone-marrow chimeras between NOD-Ea and non-transgenic NOD mice, where we could examine the contribution of E-expressing bone-marrow-derived cells in positive selection. We find that NOD-Ea→NOD-Ea chimeras have an increased positive selection of Vb13+CD8+ cells and that positive selection is more efficient when both thymic epithelium and bone-marrow-derived cells express the E molecule. This was also seen for Vb6+CD4+ cells. However, for Vb6, bone-marrow-derived cells alone were also capable of positive selection. Positive selection of Vb10+CD4+ cells was restricted to E-expressing thymic epithelium only. For Vb13+CD8+ cells, we found that positive selection is most efficient with E-expression on both thymic epithelium and bone-marrow-derived cells, although positive selection also occurs with E-positive epithelium only. For Vb6+CD4+ cells, the dominating selecting cells are bone-marrow-derived cells, and Vb10+CD4+ cells seem to be selected exclusively by the thymic epithelium. Thus, the conditions for positive selection seem to vary considerably between different Vb families.

  • 317. Brenden, N.
    et al.
    Böhme, Jan
    Södertörn University, Avdelning Naturvetenskap. Karolinska Institute.
    Disease-protected major histocompatibility complex Ea-transgenic non- obese diabetic (NOD) mice show interleukin-4 production not seen in susceptible Ea-transgenic and non-transgenic NOD mice1998In: Immunology, ISSN 0019-2805, E-ISSN 1365-2567, Vol. 95, no 1, p. 1-7Article in journal (Refereed)
    Abstract [en]

    The non-obese diabetic (NOD) mouse is an animal model for insulin- dependent diabetes that has many similarities to the human disease. NOD mice transgenic for the Ea gene, allowing expression of the E molecule, are protected from diabetes and rarely develop insulitis. An Ea transgene mutated in the promoter region, (ΔY) lacks E expression on most B cells, thymic medullary epithelium and primary antigen-presenting cells, and confers no protection whatsoever. We have used these transgenic NOD mice, together with non-transgenic NOD mice, to study the correlation of E expression and production of interleukin-4 (IL-4) and interferon-γ (IFN-γ). We show that protected E-transgenic NOD mice have elevated levels of IL-4 compared with non-transgenic mice, both in the thymus and in the periphery. However, susceptible ΔY-transgenic mice have elevated thymic IL-4 levels, but express almost as little IL-4 as non-transgenic NOD mice in the periphery. This drop in peripheral IL-4 production seen in ΔY-transgenic mice thus correlates with the decreased E expression in the periphery of ΔY-transgenic NOD mice. In contrast, there were no differences in IFN-γ production between the three NOD lines. We suggest that Ea-transgenic NOD mice have E-selected regulatory T cells producing IL-4, which are subsequently activated by E-expressing primary antigen-presenting cells in the periphery. This activation would then be instrumental for the E-mediated protection from disease in NOD mice. Such a process would explain the total absence of protection in ΔY-transgenic NOD mice, despite their widespread E expression.

  • 318. Brenden, N.
    et al.
    Rietz, C.
    Böhme, Jan
    Södertörn University, Avdelning Naturvetenskap. Karolinska Institute.
    E expression is needed on both bone marrow derived cells and thymic epithelium to increase IL-4 production and achieve protection in NOD bone marrow chimeras1999In: Cytokine, ISSN 1043-4666, E-ISSN 1096-0023, Vol. 11, no 10, p. 766-772Article in journal (Refereed)
    Abstract [en]

    The NOD mouse is an animal model for insulin-dependent diabetes with many similarities to the human disease. NOD mice which are transgenic for the Ea gene, allowing expression of the E molecule, are protected from diabetes and rarely develop insulitis. We have constructed bone marrow chimeras between transgenic and non-transgenic NOD mice to study the correlation of E expression on bone marrow derived cells and thymic epithelium vs the production of IL-4 and IFN-γ. We show that NOD-E→NOD-E and NOD-E→NOD chimeras have elevated levels of IL-4 compared to NOD→NOD and NOD→NOD-E chimeras in the thymus. However, in the periphery the protected NOD-E→NOD-E show much higher IL-4 levels than any of the other chimeras. This drop in peripheral IL-4 production seen in NOD-E→NOD, NOD→NOD-E and NOD→NOD chimeras correlates with the increased insulitis seen in these mice compared to NOD-E→NOD-E. In contrast, there were no differences in IFN-γ production between the chimeras. We suggest that the precommitted, regulatory T cells, selected in an E-expressing thymic environment, need continuous interaction with E-expressing primary antigen presenting cells in the periphery for optimal IL-4 production. Decrease in IL-4 production correlates with increased insulitis.

  • 319.
    Bresin, Roberto
    et al.
    KTH Royal Institute of Technology.
    Askenfelt, Anders
    KTH Royal Institute of Technology.
    Friberg, Anders
    KTH Royal Institute of Technology.
    Hansen, Kjetil Falkenberg
    KTH Royal Institute of Technology.
    Ternström, Sten
    KTH Royal Institute of Technology.
    Sound and Music Computing at KTH2012In: SMC Sweden 2012 Sound and Music Computing, Understanding and Practicing in Sweden: proceedings / [ed] Roberto Bresin, Kjetil Falkenberg Hansen, Stockholm: Department of Speech, Music and Hearing, Royal Institute of Technology , 2012, Vol. 52, no 1, p. 33-35Conference paper (Refereed)
  • 320.
    Brockington, Dan
    et al.
    University of Sheffield, Sheffield, England.
    Howland, Olivia
    University of Sheffield, Sheffield, England.
    Loiske, Vesa-Matti
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Mnzava, Moses
    University of Dar es Salaam, Dar Es Salaam, Tanzania.
    Noe, Christine
    University of Dar es Salaam, Dar Es Salaam, Tanzania.
    Economic growth, rural assets and prosperity: exploring the implications of a 20-year record of asset growth in Tanzania2018In: Journal of Modern African Studies, ISSN 0022-278X, E-ISSN 1469-7777, Vol. 56, no 2, p. 217-243Article in journal (Refereed)
    Abstract [en]

    Measures of poverty based on consumption suggest that recent economic growth in many African countries has not been inclusive, particularly in rural areas. We argue that measures of poverty using assets may provide a different picture. We present data based on recent re-surveys of Tanzanian households first visited in the early 1990s. These demonstrate a marked increase in prosperity from high levels of poverty. It does not, however, follow that these improvements derive from GDP growth. We consider the implications of this research for further explorations of the relationship between economic growth and agricultural policy in rural areas.

  • 321.
    Broman, E.
    et al.
    Stockholm University.
    Motwani, Nisha H.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Bonaglia, S.
    Stockholm University / University of Southern Denmark, Odense, Denmark.
    Landberg, T.
    Stockholm University.
    Nascimento, F. J. A.
    Stockholm University.
    Sjöling, Sara
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Denitrification responses to increasing cadmium exposure in Baltic Sea sediments2019In: Aquatic Toxicology, ISSN 0166-445X, E-ISSN 1879-1514, Vol. 217, article id 105328Article in journal (Refereed)
    Abstract [en]

    Benthic ecosystems have come under intense pressure, due to eutrophication-driven oxygen decline and industrial metal contamination. One of the most toxic metals is Cadmium (Cd), which is lethal to many aquatic organisms already at low concentrations. Denitrification by facultative anaerobic microorganisms is an essential process to transform, but also to remove, excess nitrate in eutrophied systems. Cd has been shown to decrease denitrification and sequester free sulfide, which is available when oxygen is scarce and generally inhibits complete denitrification (i.e. N2O to N2). In polluted sediments, an interaction between oxygen and Cd may influence denitrification and this relationship has not been studied. For example, in the Baltic Sea some sediments are double exposed to both Cd and hypoxia. In this study, we examined how the double exposure of Cd and fluctuations in oxygen affects denitrification in Baltic Sea sediment. Results show that oxygen largely regulated N2O and N2 production after 21 days of exposure to Cd (ranging from 0 to 500 μg/L, 5 different treatments, measured by the isotope pairing technique (IPT)). In the high Cd treatment (500 μg/L) the variation in N2 production increased compared to the other treatments. Increases in N2 production are suggested to be an effect of 1) enhanced nitrification that increases NO3 − availability thus stimulating denitrification, and 2) Cd successfully sequestrating sulfide (yielding CdS), which allows for full denitrification to N2. The in situ field sediment contained initially high Cd concentrations in the pore water (∼10 μg/L) and microbial communities might already have been adapted to metal stress, making the effect of low Cd levels negligible. Here we show that high levels of cadmium pollution might increase N2 production and influence nitrogen cycling in marine sediments. © 2019 The Authors

  • 322.
    Broman, Elias
    et al.
    Stockholm University.
    Raymond, Caroline
    Stockholm University.
    Sommer, Christian
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science. Södertörn University, Centre for Baltic and East European Studies (CBEES), Baltic & East European Graduate School (BEEGS).
    Gunnarsson, Jonas S
    Stockholm University.
    Creer, Simon
    Bangor University, Bangor, UK.
    Nascimento, Francisco J A
    Stockholm University.
    Salinity drives meiofaunal community structure dynamics across the Baltic ecosystem2019In: Molecular Ecology, ISSN 0962-1083, E-ISSN 1365-294X, Vol. 28, no 16, p. 3813-3829Article in journal (Refereed)
    Abstract [en]

    Coastal benthic biodiversity is under increased pressure from climate change, eutrophication, hypoxia, and changes in salinity due to increase in river runoff. The Baltic Sea is a large brackish system characterized by steep environmental gradients that experiences all of the mentioned stressors. As such it provides an ideal model system for studying the impact of on-going and future climate change on biodiversity and function of benthic ecosystems. Meiofauna (animals < 1 mm) are abundant in sediment and are still largely unexplored even though they are known to regulate organic matter degradation and nutrient cycling. In this study, benthic meiofaunal community structure was analysed along a salinity gradient in the Baltic Sea proper using high-throughput sequencing. Our results demonstrate that areas with higher salinity have a higher biodiversity, and salinity is likely the main driver influencing meiofauna diversity and community composition. Furthermore, in the more diverse and saline environments a larger amount of nematode genera classified as predators prevailed, and meiofauna-macrofauna associations were more prominent. These findings show that in the Baltic Sea, a decrease in salinity resulting from accelerated climate change will likely lead to decreased benthic biodiversity, and cause profound changes in benthic communities, with potential consequences for ecosystem stability, functions and services.

  • 323.
    Broniarczyk, Justyna
    et al.
    Department of Molecular Virology, Adam Mickiewicz University.
    Wigerius, Michael
    Södertörn University, School of Life Sciences, Molecular biology. Södertörn University, School of Life Sciences, Chemistry.
    Johansson, Magnus
    Södertörn University, School of Life Sciences, International health. Södertörn University, School of Life Sciences, Chemistry.
    The NS1 protein of Influenza A virus targets human Scribble in asubtype specific mannerManuscript (preprint) (Other academic)
  • 324.
    Browall, Sarah
    Södertörn University College, School of Life Sciences.
    Comparative genomic analyse by microarray technology of pneumococci with different potential to cause disease.2007Independent thesis Basic level (professional degree), 20 points / 30 hpStudent thesis
    Abstract [en]

    Streptococcus pneumoniae is a gram-positive bacterium that can be found in both healthy carriers as well as in people that have developed disease. One of the major virulence factors of pneumococci is their polysaccharide capsule. Based on the capsule that surrounds the bacteria, pneumococci are divided into at least 90 different serotypes. Some serotypes seem to be more related to virulence than others.

    I have with comparative genome hybridization microarray technique, studied gene differences between 18 epidemiological well-characterised pneumococcal strains with different potential to cause disease. A microarray chip based on two sequenced pneumococcal genomes, R6 and TIGR4, has already been designed. According to Hierarchical clustering, both the serotype and the genetic type as assessed by MLST (sequence type or ST) seem to have impact on the relationship of clinical isolates. Most clinical isolates of the same serotype are clustered together except for serotype 14 isolates that seem to be more divergent. Further more the number of genes that are divergent between clinical isolates compared to R6 and TIGR4 differ from 65 to 289. Preliminary results indicate that although there is diversity among clinical isolates some are more closely related to each other then others. Absent genes seem to be evenly distributed among all 18 clinical isolates tested but hypothetical genes and genes for cell envelope are two groups of role categories that are absent to the largest extent in all isolates.

    According to results from microarray analysis, a gene region, spr0112-spr1015- is present in all type 9V isolates and absent in many isolates of serotype 14, 19F and 7F. These results have been confirmed by polymerase chain reaction (PCR).

    Conserved genes in a region around the capsule genes have been sequenced to identify marker genes for a capsulular switch between serotype 9V and 14. Preliminary results of the sequencing showed that as much as 750kb might have been transferred in the event of capsular switch.

  • 325. Brown, Barry
    et al.
    Lundin, Johan
    Rost, Mattias
    Lymer, Gustav
    Holmquist, Lars Erik
    Gifts from friends and strangers: a study of mobile music sharing2007In: ECSCW’07: Proceedings of the Tenth European Conference on Computer Supported CooperativeWork, 24-28 September 2007, Limerick, Ireland / [ed] L. Bannon, I. Wagner, C. Gutwin, R. Harper, K. Schmidt, London: Springer , 2007, p. 311-330Conference paper (Refereed)
  • 326. Brown, Barry
    et al.
    Lundin, Johan
    Rost, Mattias
    Lymer, Gustav
    Holmquist, Lars Erik
    Seeing ethnographically: Teaching ethnography as part of CSCW2007In: ECSCW’07: Proceedings of the Tenth European Conference on Computer Supported CooperativeWork, 24-28 September 2007, Limerick, Ireland / [ed] L. Bannon, I. Wagner, C. Gutwin, R. Harper, K. Schmidt, London: Springer , 2007, p. 411-430Conference paper (Refereed)
  • 327.
    Brundin, Hanne
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Norrhäll, My
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    eWOMs påverkan vid val av resmål: Den digitala världens påverkan i valet av resmål genom spridning av tidigare erfarenheter2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Det huvudsakliga syftet med denna uppsats är att undersöka hur eWOM (Electronic Word-of- mouth), det elektroniska sättet att sprida information samt erfarenheter av ett resmål via internet, påverkar oss som individer vid val av ett resmål.

    Genom användandet av kvalitativa intervjuer, enkätundersökning samt litteraturstudier inom ämnet har författarna för denna uppsats undersökt användandet av eWOM utifrån tre punkter:

    • Hur stor påverkan eWOM har på en individ vid val av resmål,
    • När använder sig individen av eWOM samt
    • Vilken slags information inhämtar individen med hjälp av eWOM. 

    Efter utförandet av intervjuerna, så väl som enkätundersökningen, kom författarna till denna uppsats fram till slutsatsen att hur personer använder sig av samt sprider eWOM beror helt och hållet på vem man är som person, dock finns eWOM med genom hela beslutsprocessen vid val av ett resmål på ett eller annat sätt. Den information som respondenterna av de kvalitativa intervjuer samt enkätundersökning tog mest till sig samt det som de ansåg var viktigt, var kommentarer om tidigare erfarenheter samt åsikter kring de resmål respondenterna söker information om.

  • 328. Brunne, R M
    et al.
    Berndt, Kurt D
    ETH Hönggerberg, Zürich, Switzerland.
    Güntert, P
    Wüthrich, K
    van Gunsteren, W F
    Güntert, P
    Wüthrich, K
    Van Gunsteren, W F
    Structure and internal dynamics of the bovine pancreatic trypsin inhibitor in aqueous solution from long-time molecular dynamics simulations1995In: Proteins: Structure, Function, and Bioinformatics, ISSN 0887-3585, E-ISSN 1097-0134, Vol. 23, no 1, p. 49-62Article in journal (Refereed)
    Abstract [en]

    Structural and dynamic properties of bovine pancreatic trypsin inhibitor (BPTI) in aqueous solution are investigated using two molecular dynamics (MD) simulations: one of 1.4 ns length and one of 0.8 ns length in which atom-atom distance bounds derived from NMR spectroscopy are included in the potential energy function to make the trajectory satisfy these experimental data more closely. The simulated properties of BPTI are compared with crystal and solution structures of BPTI, and found to be in agreement with the available experimental data. The best agreement with experiment was obtained when atom-atom distance restraints were applied in a time-averaged manner in the simulation. The polypeptide segments found to be most flexible in the MD simulations coincide closely with those showing differences between the crystal and solution structures of BPTI.

  • 329. Brynjarsdottir, Hronn
    et al.
    Håkansson, Maria
    Cornell University.
    Pierce, James
    Baumer, Eric
    DiSalvo, Carl
    Sengers, Phoebe
    Sustainably unpersuaded: how persuasion narrows our vision of sustainability2012In: CHI ’12: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, New York: ACM Press, 2012, p. 947-956Conference paper (Refereed)
  • 330.
    Brändström, Linda-Marie
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Implementeringsprocessen för en hållbar livsmedelsförsörjning: - En kvalitativ studie av Jönköpings och Örebro läns regionala livsmedelsstrategier2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In 2017 the Swedish government established a national food strategy “A National Food Strategy for Sweden -more jobs and sustainable growth throuout the country” which aims to achieve a long-termed sustainable and competitive food chain. The purpose of the strategy is to serve as a platform for which the Swedish politics is to form the food industry to the year 2030. The government urge that engagement and cooperation between participators in the food industry at local, regional and national level are necessary to make the food strategy possible to implement. The global challenges with a growing population with the need for food and climate change makes it more urgent to act faster within national frontiers. Implementing political strategies is proved to be somewhat difficult as studies shows that it is often produced isolated at different political levels with different ambitions. This study views the regional food strategies made by Jönköpings country och Örebro country through a policy analysis. The aim is to explore which implementation arenas and mechanisms the policy documents include through a theoretical lens. The result shows that implementing the policy in this case mainly plays within a Top-down arena. The outcome of the strategy depends on how well the process mechanisms are managed. The clarity of political decision, stakeholders shearing the same goals and cooperation between differen actors are important mechanisms for the implementation of the national food strategy.

  • 331. Bränn, Kristina Holmen
    et al.
    Lehtilä, Kari
    Södertörn University College, School of Life Sciences.
    Maternal plant responses to high pollen loads2007In: International journal of plant sciences, ISSN 1058-5893, E-ISSN 1537-5315, Vol. 168, no 7, p. 1013-1019Article in journal (Refereed)
    Abstract [en]

    Maternal plant responses to different levels of pollination vary and are of importance for the total fitness of the plant. We studied how varying pollen load affects late flowering, reproduction, and growth of maternal plants. Raphanus raphanistrum, Sinapis arvensis, and Brassica napus were used as study species. We conducted hand- pollination experiments with different pollen loads for early flowers in the inflorescence and measured responses on vegetative traits, floral traits of late flowers, and seed production. There were no effects on vegetative traits, but floral traits were affected by treatments in two of the study species. The high pollen load treatment in S. arvensis resulted in longer petals on late flowers compared with the low pollen load treatment. In R. raphanistrum, the high pollen load treatment resulted in a higher number of flowers, with narrower petals, than the low pollen load treatment. Total seed production was similar in both treatments in all species. Our results suggest that plants that received a high pollen load were able to allocate resources to high seed production of early flowers and to increased pollen dispersal of late flowers, thereby achieving higher total fitness than plants that received a lower pollen load.

  • 332.
    Bräutigam, Lars
    et al.
    Södertörn University, School of Life Sciences, Molecular biology.
    Hillmer, Janine M.
    Södertörn University, School of Life Sciences, Molecular biology.
    Söll, Iris
    Södertörn University, School of Life Sciences, Molecular biology.
    Hauptmann, Giselbert
    Södertörn University, School of Life Sciences, Molecular biology.
    Localized Expression of Urocortin Genes in the Developing Zebrafish rain2010In: Journal of Comparative Neurology, ISSN 0021-9967, E-ISSN 1096-9861, Vol. 518, no 15, p. 2978-2995Article in journal (Refereed)
    Abstract [en]

    The corticotropin-releasing hormone (CRH) family consists of four aralogous genes, CRH and urocortins (UCNs) 1, 2, and 3. In a previous tudy, we analyzed CRH in the teleost model organism zebrafish and its ranscript distribution in the embryonic brain. Here, we describe ull-length cDNAs encoding urotensin 1 (UTS1), the teleost UCN1 rtholog, and UCN3 of zebrafish. Major expression sites of uts1 in adult ebrafish are the caudal neurosecretory system and brain. By using T-PCR analysis, we show that uts1 mRNA is also present in ovary, aternally contributed to the embryo, and expressed throughout embryonic evelopment. Expression of ucn3 mRNA was detected in a range of adult issues and during developmental stages from 24 hours post fertilization nward. Analysis of spatial transcript distributions by whole-mount in itu hybridization revealed limited forebrain expression of uts1 and cn3 during early development. Small numbers of uts1-synthesizing eurons were found in subpallium, hypothalamus, and posterior iencephalon, whereas ucn3-positive cells were restricted to elencephalon and retina. The brainstem was the main site of uts1 and cn3 synthesis in the embryonic brain. uts1 Expression was confined to he midbrain tegmentum; distinct hindbrain cell groups, including locus oeruleus and Mauthner neurons; and the spinal cord. ucn3 Expression was ocalized to the optic tectum, serotonergic raphe, and distinct hombomeric cell clusters. The prominent expression of uts1 and ucn3 in rainstem is consistent with proposed roles of CRH-related peptides in tress-induced modulation of locomotor activity through monoaminergic rainstem neuromodulatory systems. J. Comp. Neurol. 518:2978-2995, 2010.

  • 333.
    Bräysy, Alex
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Arkö, Axel
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Fourth Wall Manipulation in Digital Games and its Impact on the Gameplay Experience2017Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis explores how manipulation of the fourth wall can affect players’ Gameplay Experience in digital games, due to the lack of any significant research regarding the matter. In preparation of the study, multiple commercially released digital games with instances of fourth wall manipulation were analysed. This led to the creation of four distinct game design patterns. These patterns were implemented into a game artefact specifically created for the study, which was played by eight participants. After playing, the participants were interviewed about how they experienced the game artefact. The results show that the majority of the patterns had a positive effect on both the participants’ immersion and engagement, which both form part of the Gameplay Experience model.

  • 334.
    Buch, Charlotta
    Södertörn University, School of Life Sciences. Karolinska Institutet.
    Dynamic protein trafficking of the nuclear membrane and in peroxisomes2009Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The cell nucleus is enclosed by the nuclear envelope (NE), a double lipid membrane separating the nucleoplasm from the cytoplasm. Transport of macromolecules between the nucleus and the cytoplasm takes places through nuclear pore complexes (NPCs) in a selective and energy dependent manner. The inner nuclear membrane (INM) contains transmembrane proteins that interact with the nuclear lamina and chromatin. In addition to being a barrier between the nucleoplasm and cytoplasm, an emerging view is that the NE has an active role in chromatin organization and gene regulation.

    In order to study structural and functional organization of the NE in live cells, we have used green fluorescent protein (GFP)-labeled proteins and laser scanning confocal microscopy (LSCM). In order to investigate dynamic properties of specific proteins or protein complexes we have used photobleaching techniques. In order to understand the organization of the NPC it is essential to study components necessary for NPC biogenesis and maintenance. We have investigated the possible alterations in the NPC in cells naturally lacking one of the integral membrane proteins of the NPC, gp210. Despite the lack of gp210, we observed no difference in distribution or density of pores. Neither did cell cycle progression nor generation time differ between cells having or lacking gp210. In addition, targeting or dynamic properties of the NPC proteins POM121, Nup107 or Nup153 were unaltered in the absence of gp210. We conclude that gp210 can not be essential for NPC biogenesis or maintaining stability of the NPC.

    The steps involved in onset of nuclear apoptosis are unclear. We studied nuclear alterations during apoptosis. We show that the nucleocytoplasmic barrier is disrupted early in apoptosis at the same time as chromatin collapses against the nuclear periphery but prior to nucleosomal DNA fragmentation. In addition, the disruption of nucleocytoplasmic transport correlates with caspase-3 dependent cleavage of POM121 at aspartate-531.

    The INM is estimated to contain ~70 uncharacterized transmembrane proteins. We characterized a novel putative mammalian NE protein that we termed Samp1. We show that Samp1 is an integral membrane protein specifically localized to the inner nuclear membrane during interphase. Interestingly, during mitosis a sub fraction of Samp1 distributed in the polar region of the mitotic spindle, colocalizing with tubulin and a lipid marker. However, another inner nuclear membrane protein, emerin, was excluded from this area. Thus Samp1 appears to define a specific membrane domain associated with the mitotic machinery.

    The distribution of peroxisomal fatty acid metabolizing enzymes have been reported to vary in different tissues. We investigated whether photobleaching techniques could be used to study the distribution of peroxisomal matrix proteins. We used GFP-labeled peroxisomal proteins and fluorescence recovery after photobleaching to show that peroxisomal matrix proteins become “trapped” inside peroxisomes after import. Thus we conclude that fluorescence loss in photobleaching can be used to distinguish between a strictly cytoplasmic localization and a dual localization when a protein is present both in the cytoplasm and in peroxisomes. Using this technique we determined that GFP-BAAT (bile acid-CoA:amino acid N-acyltransferase) is exclusively localized to the cytoplasm in HeLa cells.

  • 335.
    Buch, Charlotta
    et al.
    Södertörn University, School of Life Sciences.
    Hunt, Mary C.
    Alexson, Stefan E. H.
    Hallberg, Einar
    Södertörn University, School of Life Sciences.
    Localization of peroxisomal matrix proteins by photobleaching2009In: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 388, no 2, p. 355-359Article in journal (Refereed)
    Abstract [en]

    The distribution of some enzymes between peroxisomes and cytosol, or a dual localization in both these compartments, can be difficult to reconcile. We have used photobleaching in live cells expressing green fluorescent protein (GFP)-fusion proteins to show that imported bona fide peroxisomal matrix proteins are retained in the peroxisome. The high mobility of the GFP-fusion proteins in the cytosol and absence of peroxisomal escape makes it possible to eliminate the cytosolic fluorescence by photobleaching, to distinguish between exclusively cytosolic proteins and proteins that are also present at low levels in peroxisomes. Using this technique we found that GFP tagged bile acid-CoA:amino acid N-acyltransferase (BAAT) was exclusively localized in the cytosol in HeLa cells. We conclude that the cytosolic localization was due to its carboxyterminal non-consensus peroxisomal targeting signal (-SQL) since mutation of the -SQL to -SKL resulted in BAAT being efficiently imported into peroxisomes.

  • 336.
    Buch, Charlotta
    et al.
    Södertörn University, School of Life Sciences.
    Lindberg, Robert
    Södertörn University, School of Life Sciences.
    Figueroa, Ricardo
    Södertörn University, School of Life Sciences.
    Gudise, Santhosh
    Södertörn University, School of Life Sciences.
    Onischenko, Evgeny
    Hallberg, Einar
    Södertörn University, School of Life Sciences.
    An integral protein of the inner nuclear membrane localizes to the mitotic spindle in mammalian cells2009In: Journal of Cell Science, ISSN 0021-9533, E-ISSN 1477-9137, Vol. 122, no 12, p. 2100-2107Article in journal (Refereed)
    Abstract [en]

    Here, we characterize a transmembrane protein of the nuclear envelope that we name spindle-associated membrane protein 1 (Samp1). The protein is conserved in metazoa and fission yeast and is homologous to Net5 in rat and Ima1 in Schizosaccharomyces pombe. We show that, in human cells, the protein is a membrane-spanning polypeptide with an apparent molecular mass of 43 kDa. This is consistent with a predicted polypeptide of 392 amino acids that has five transmembrane segments and its C-terminus exposed to the nucleoplasm. During interphase, Samp1 was specifically distributed in the inner nuclear membrane. Post-transcriptional silencing of Samp1 expression resulted in separation of centrosomes from the nuclear envelope, indicating that it is functionally connected to the cytoskeleton. At the onset of mitosis, most of the protein dispersed out into the ER, as expected. However, during mitosis, a significant fraction of the protein specifically localized to the polar regions of the mitotic spindle. We demonstrate for the first time, in human cells, the existence of a membranous structure overlapping with the mitotic spindle. Interestingly, another integral inner nuclear membrane protein, emerin, was absent from the spindle-associated membranes. Thus, Samp1 defines a specific membrane domain associated with the mitotic spindle.

  • 337. Burenin, Anatoliy A.
    et al.
    Zinovyev, Pavel V.
    Lebedeva, Natalia F.
    Construction of approximate solutions of the non-stationary one-dimensional axially symmetric tasks of dynamics of an incompressible elastic medium2002In: Advanced Problems in Mechanics  2002.: Proceeding, St.Peterburg: Russian Academy of Sciences, 2002, p. 134-138Conference paper (Refereed)
  • 338. Burenin, Anatoly A.
    et al.
    Lebedeva, Natalia F.
    On constructing approximate solutions för problems in dynamics of incompressible elastic medium with axial symmetry2002Conference paper (Refereed)
  • 339.
    Burfoot, Christopher
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Tourism as a tool for communicating complex environmental issues: Applying the ecosystem services framework to nature-based tourism activities across Iceland2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Throughout the twenty-first century, the lowering cost and increased availability of travel options has resulted in virtually uninterrupted economic growth of the international tourism sector. While financially beneficial, the increased movement of people has also been shown to have a negative impact on the environment, leading to the growth of a more environmentally-friendly approach to travel called nature-based tourism. One country at the forefront of the nature-based tourism movement is Iceland, and while the sector has grown significantly in the country over the past decade, the way in which information concerning environmental issues is communicated to tourists has not been widely researched. Being the case, the aim of this study was to examine the extent to which environmental issues are communicated to the general public through the use of the ecosystem services framework. Four popular nature-based tourism activities were selected for analysis; a whale watching tour, a horse riding tour, a boat tour of a glacial lagoon and a spa experience in a geothermal hot spring. A literature review concerning how the ecosystem services framework related to each of these tours was carried out and findings were compared to observatory data gathered through participation in said tourism activities. Results showed that while scientific publications could be found for each tour/ecosystem service combination, information concerning environmental issues was not widely communicated to participants in the nature-based tourism activities using the ecosystem services framework.

  • 340.
    Burglin, Thomas R
    Södertörn University, Avdelning Naturvetenskap.
    The homeobox genes of Encephalitozoon cuniculi (Microsporidia) reveal a putative mating-type locus2003In: Development, Genes and Evolution, ISSN 0949-944X, E-ISSN 1432-041X, Vol. 213, no 1, p. 50-52Article in journal (Refereed)
  • 341.
    Bustos, Christian
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Beteendebubblan: En studie om navigationsbeteende på internet med fokus på korta navigationstillfällen2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this paper is to explore web use and web navigation behavior. This paper presents findings from qualitative research based on interviews and diarie studies. The basis of this study is Eli Parisers work about “the filter bubble”. As personalization systems shape our experience of the web, based on who we are, our bubble of knowledge and information becomes smaller. But it’s not only how technology works to show us a narrow part of reality. Our own choices about websites, content and the activities on the web, lead us into another type of bubble. A behavior bubble. A bubble where all the content we consume is interesting. The conclusion of this paper is that narrow web navigation behavior can be observed among all subjects studied irrespective of age and devices used, whereas monotonous web navigation behavior only can be identified among individuals using a smartphone for web browsing.

  • 342.
    Bustos, Christian
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Implementing implicit interaction in interactive film2016Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this paper, an user study will be taken on in order to explore how different types of interaction affect the levels of immersion and experience within interactive film. The two different types of interaction that will be compared in this study are implicit interaction, and explicit interaction.

    The format of interactive film has not experienced too many changes the last years, and the user could experience a loss of immersion when using the format as it is shaped today. Usually, interactive films interrupt the flow of the narrative in order to give the user the time to make a choice. This makes the immersion get lost, and in some way, even part of the experience. In this paper, implicit interaction will be implemented within interactive film, and it will be tested by several participants from different disciplines.

    One hypothesis is that the users are more immersed in the narrative when trying out implicit interaction in an interactive film. The results of this paper could be useful for the community of computer entertainment, but also for the field of interaction design since this paper could reveal how users experience implicit interaction and how designers should approach to this type of interaction. 

  • 343.
    Bustos, Christian
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Nestlander, Jonas
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Marknadsförande koncept för Studiefrämjandets ledarutbildningar2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper focuses on the process of creating a selling concept and examines how toattract new participants after taking a step out of an organisations comfort zone. In this thesis work we have created a marketing concept for Studiefrämjandet’s leadership courses. The mission was to increase the interest for the course and the tool we have used to achive that is digital media. Along with a short film, we have also created a prototype for a website implement that is to work as an inspirational place for the course. This website implement has three objectives; To inspire, to motivate, and to exhort to action. The short film is the inspiration that creates interest among the visitors. The motivation is created thanks to short storys from former participants, and a calender creates an easy-to-use booking tool where users can apply for the course.

  • 344.
    Bäckström, Stina
    et al.
    Södertörn University, School of Culture and Education, Centre for Studies in Practical Knowledge.
    Huitric, Miriam
    Stockholms universitet.
    Normark, Maria
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Media Technology.
    Reflekterande texter om digitala media: Ett forskningskompendium till teaterföreställningen Spegla mig – ett drama av Rebecca Örtman, konstnärlig ledare för RATS Teater2018Book (Other (popular science, discussion, etc.))
  • 345.
    Bärgård, Jennifer
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Vi-skogens kommunikation om sin verksamhet till intressenter: - Retoriskanalys av bild och text2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    ABSTRACT

    Vi-Agroforestry communication has been studied to see how they use communication as a tool to attract donors. The aim is to be able to contribute to shed some light on the importance of image and text as a unified communication. Its about acknowledge what the sender (aid organization) sends out to tell potential donors. It examines how the organization communicates the problems they want to solve, which method they want to solve it with and why their organization should be the preferred option before the interest is gone by the recipient. By examine the reliability (ethos), the emotional connection (pathos) and the factual conviction (logos) of the Vi Agroforestry communication it helps to understand the organizations way of communicate with their listeners.

    The study examined Vi-Agroforestry communication through image and text. The author hopes to contribute to explore what an aid organization, like Vi-Agroforestry, choose to focus on regarding when they get to talk about their organization and their work. The organization has been analyzed based on the rhetorical basics to go on to see which framework they create their communications.

  • 346.
    Båverman, Evelina
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Effekter av habitatstorlek, konnektivitet och områdesskydd på förekomst av revlummer Lycopodium annotinum och mattlummer Lycopodium clavatum i Södermanland2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of this study is to test theories of the effects of habitat size, connectivity, area protection, habitat amount and fragmentation on the occurrence of single species, plus examining the existence of a fragmentation threshold and an extinction threshold. Occurrence of stiff clubmoss Lycopodium annotinum and stag’s-horn clubmoss Lycopodium clavatum was examined in 61 forest fragments scattered over 10 large 2,5×2,5 km plots, located in the county of Stockholm in Sweden. In each forest an area covering 500m2 was searched for the two species. Lycopodium annotinum occured in 13 and L. clavatum in 10 of the investigated fragments. Lycopodium annotinum occurred in at least 1 fragment in 7 large plots, 8 large plots was the corresponding number for L. clavatum. The results showed a significant positive effect of habitat size on the occurrence of both species and a significant positive effect of connectivity on the occurrence of Lycopodium clavatum. Area protection, habitat amount and fragmentation had no observed effect on the occurrence of these species, and no fragmentation threshold or extinction threshold was found. These results indicate the importance of preserving large forest fragments with high connectivity, to assure continued viability of the examined species.

  • 347. Böcker, M
    et al.
    Hüttenrauch, Helge
    Södertörn University College, School of Communication, Media and it, Informatics.
    Pluke, M
    Rodriguez-Ascaso, A
    Schneider, M
    Zetterström, E
    Identifying enablers for future e-Services2010In: 2010 4th International Conference on Pervasive Computing Technologies for Healthcare: Pervasive Health 2010, Gent: ICST , 2010, p. -5Conference paper (Other academic)
  • 348.
    Bökmark, Sara
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Linnala, Laura
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Miljön som handelsvara: en diskursanalys över utsläppsrättssystem2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Växthusgasnivåerna i atmosfären har nått nivåer som påverkar klimatet på jorden. Det här ställer krav på politiska överenskommelser som effektivt kan verka för en minskning av växthusgaser i atmosfären. Kyotoprotokollet implementerades 1997 och innehåller lagbindande krav på medlemsländerna att minska sina växthusgasutsläpp och presenterar utsläppsrätter som styrmedel för att nå målen. Utsläppsrätter innebär att politiker sätter ett pris på rätten att släppa ut och låter verksamheter som förorenar handla med rätterna, vilket enligt nationalekonomisk marknadsteori är det mest effektiva sättet att gå tillväga. Detta kan däremot kritiseras av ekologiska ekonomer som motsätter sig prissättande av miljön.

    Diskursteori används för att studera vad som har normaliserats med införandet av utsläppsrättssystem och därför inte ifrågasätts. Analysen visade att två diskurser primärt råder i den utvalda empirin; ekonomisk liberalism och teknologisk tilltro. Fokus på vinst, tillväxt, kostnadseffektivitet samt teknikoptimism återkom i alla tre dokumenten och framställs som avgörande för att nå målen för utsläppsreduktion.

    Utsläppsrätter är ett ekonomiskt styrmedel vars styrka ligger i marknadsmekanismer, men ur ett hållbarhetsperspektiv finns problematik med prissättande av miljön; framförallt att det vilar på svag hållbarhet. Även marknadens otillräckliga förmåga att ta hänsyn till moraliska angelägenheter, prissättning av miljön och att ansvarsförskjutning mot företag placerar en större klyfta mellan människa och miljö kan tolkas som problematiskt.

  • 349.
    Börjeson, Natasja
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science. natasja.borjeson@sh.se.
    Toxic Textiles: Towards Responsibility in Complex Supply Chains2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The governance of the environmental and health problems that follow in the wake of globalised trade is one of the great contemporary challenges. One of these challenges is the management of chemical pollution and associated risks, and one sector facing this challenge is the textile industry, which has complex supply chains spread across continents. At the same time the role of actors on the playing field are changing and market actors are being called on to responsibly manage the issue of chemical risks and associated challenges. However, governance and control are often obstructed due to complexity and considerable knowledge uncertainty. This situation complicates responsibility-taking and makes it difficult to ascribe liabilities to specific actors, as it is not obvious who is responsible for what. This thesis is concerned with the process of how a group of market actors – private and public textile buyers – assume responsibility of chemical risks in their supply chains in a situation that is characterized by uncertainty and complexity. This thesis aims to contribute to an understanding of what happens when market actors are called on to manage the negative side effects of globalisation. The focus is on Swedish textile-buying private and public organisations. The thesis constructs an analytical model based on the key concepts responsible governance, responsibilisation, and responsible supply chain management (RSCM). The thesis explores the barriers, challenges and opportunities that exist for buyers seeking to assume RSCM and whether a process of responsibilisation can be observed in the textile sector. The thesis uses an exploratory approach and interviews, participatory observations and literature studies, as well as case studies to understand the process and to investigate barriers, challenges, opportunities. In summary, the thesis shows that a process of responsibilisation is ongoing on the organisational and sector levels. Further, it is shown that due to the complex structures of the chains, there are more barriers and challenges than opportunities for buyers striving for RSCM. However, it is argued that cooperation, stronger public and private policy, and a reflexive approach could be ways forward towards RSCM and increased responsibilisation in the textile sector.

  • 350.
    Börjeson, Natasja
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Boström, Magnus
    Örebro Universitet.
    Towards reflexive responsibility in a textile supply chain2018In: Business Strategy and the Environment, ISSN 0964-4733, E-ISSN 1099-0836, Vol. 27, no 2, p. 230-239Article in journal (Other academic)
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