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Information hanteras, lagras och används av alla typer av verksamheter i sambandmed digitaliseringens framfart. Information är en drivande resurs för verksamhetersom en viktig biståndsdel i affärsprocesser och därför finns ett behov att skydda den.Informationssäkerhet är inte bara en teknisk fråga utan påverkas av organisationskultur,anställdas säkerhetsmedvetenhet samt ledning och individ. Studien användersig av en abduktiv forskningsansats med en kvalitativ datainsamling. I studien intervjuadesnio anställda från olika kommunala förvaltningar för att undersöka hurarbetet med informationssäkerhet bedrivs. I analysen undersöker vi hur den nuvarandesituationen ställer sig mot teorier om hur ett effektivt säkerhetsarbete skabedrivas. I diskussionen belyser vi vikten av ledningens delaktighet i verksamhetensinformationssäkerhet och hur det påverkar det systematiska säkerhetsarbetet.Vi diskuterar även hur individens roll påverkar säkerhetsarbetets effektivitet. Studienvisar hur informationssäkerheten i kommunala förvaltningar inte ligger i fas medbehovet och pekar på vikten av individen samt ledningens ansvar i säkerhetsarbetet. / Information is handled, stored and used by all types of organisations in conjunctionwith the digitization. Information is an important business driver in the businessprocesses of most organisations therefore the protection of the information is crucial.Information security is not solely a technical question and therfore is affectedby the organisational culture, employees security awareness and the role of managementand individuals. The study uses a qualitative method for data collectionwith an abductive approach. In the study, we perform interviews with 9 differentemployees within different municipal administrations to examine how they workwith information security. In the analysis we investigate the correlation betweentheory and the existing situation. In the discussion we highlight the importance ofmanagement participation and the effects they have on information security, securityawareness and organisational culture. We also discuss the importance of theinvolvement of individuals in information security and how it affects its effectivness.The study shows the municiapals shortcomings within information security and theimportance of individuals and managements responsibility for an effective and secureorganisation.

Den här studien undersöker hur kvinnor upplever och tolkar hur kvinnokroppens representation i sociala medier påverkar deras självkänsla och psykiska hälsa. Genom en översikt av tidigare forskning, intervjuer med sex kvinnor i åldern 20-30 år samt tillämpning av social inlärningsteori och receptionsforskning, syftar vi till att ge en nyanserad insikt i detta viktiga samhällsproblem och ge läsarna en stark teoretisk grund för att förstå problemet. Kombinationen av social inlärningsteori och receptionsforskning ger oss möjlighet att få en nyanserad förståelse för hur publiken tolkar och interagerar medieinnehållet, detta genom att använda oss av begrepp som bland annat aktiv publik, mediebruk, inlärning och modellering. Resultaten av studien visar att sociala medier kan ha en negativ påverkan på hälsa och självkänsla på grund av den utbredda förekomsten av orealistiska skönhetsnormer och den konstanta jämförelsen med andra. Detta kan vara skadligt och i en del fall leda till ätstörningar. Vårt resultat visar också på att det finns positiva aspekter av sociala medier som kan främja en hälsosam självbild, såsom möjligheten att få tillgång till kropps-positivistiskt innehåll. / This study examines how women perceive and interpret the representation of the female body on social media and its impact on their self-esteem and mental health. Through a review of previous research, interviews with six women aged 20-30 years, and the application of social learning theory and reception studies, our aim is to provide nuanced insight into this important societal issue and give readers a strong theoretical foundation for understanding the problem. The combination of social learning theory and reception studies allows us to gain a nuanced understanding of how the audience interprets and interacts with media content, using concepts such as active audience, media use, learning, and modeling. The results of the study show that social media can have a negative impact on health and self-esteem due to the widespread prevalence of unrealistic beauty standards and constant comparison with others. This can be harmful and, in some cases, lead to eating disorders. Our findings also highlight that there are positive aspects of social media that can promote a healthy self-image, such as access to body-positive content.

Les remarquables performances des réseaux de neurones profonds dans de nombreux domaines de l'apprentissage automatique au cours de la dernière décennie soulèvent un certain nombre de questions théoriques. Par exemple, quels mecanismes permettent à ces reseaux, qui ont largement la capacité de mémoriser entièrement les exemples d'entrainement, de généraliser correctement à de nouvelles données, même en l'absence de régularisation explicite ? De telles questions ont fait l'objet d'intenses efforts de recherche ces dernières années, combinant analyses de systèmes simplifiés et études empiriques de propriétés qui semblent être corrélées à la performance de généralisation. Les deux premiers articles présentés dans cette thèse contribuent à cette ligne de recherche. Leur but est de mettre en évidence et d'etudier des mécanismes de biais implicites permettant à de larges modèles de prioriser l'apprentissage de fonctions "simples" et d'adapter leur capacité à la complexité du problème. Le troisième article aborde le problème de l'estimation de information mutuelle en haute, en mettant à profit l'expressivité et la scalabilité des reseaux de neurones profonds. Il introduit et étudie une nouvelle classe d'estimateurs, dont il présente plusieurs applications en apprentissage non supervisé, notamment à l'amélioration des modèles neuronaux génératifs. / The striking empirical success of deep neural networks in machine learning raises a number of theoretical puzzles. For example, why can they generalize to unseen data despite their capacity to fully memorize the training examples? Such puzzles have been the subject of intense research efforts in the past few years, which combine rigorous analysis of simplified systems with empirical studies of phenomenological properties shown to correlate with generalization. The first two articles presented in these thesis contribute to this line of work. They highlight and discuss mechanisms that allow large models to prioritize learning `simple' functions during training and to adapt their capacity to the complexity of the problem. The third article of this thesis addresses the long standing problem of estimating mutual information in high dimension, by leveraging the scalability of neural networks. It introduces and studies a new class of estimators and present several applications in unsupervised learning, especially on enhancing generative models.

Sport, as a human activity, contributes to the changes happening in the natural environment, making the sport sector a responsible actor for sustainable development. Experiences in nature can raise awareness about our natural environment and possibly influence pro-environmental behaviour and our identities. Such nature experiences can be reached in schools with teachers as implementers and role models. Swedish schools for example, have a concept called friluftsliv, which introduces children to outdoor experiences as part of Physical Education (PE). In Switzerland, a similar country to Sweden in many aspects, such a concept is non-existent. Thus, this study aims to observe possible differences and similarities between environmental identities of PE teachers in Sweden and Switzerland, how those developed and manifest today.  Primary and secondary school PE teachers from Switzerland and Sweden were asked to draw nature and were interviewed individually as well as in separate group discussions. The model of Education for Sustainability, Transformative Learning Theory, and Identity Theory serve as the theoretical framework of this work. The results show that there are many individual differences in how the PE teachers’ environmental identities manifest. Some see nature as a platform for activities, some deeply care for it, some seek interactions with it or even perceive themselves as a part of the natural world. When it comes to Swiss participants, main influences on their environmental identity were identified before Physical Education teacher education (PETE) through sport-related activities with their family, in associations or their leisure time, whereas the Swedish experiences were more sport-unrelated, connected to family experiences and as part of PETE. I conclude, according to the model of Education for Sustainability, that there were less transformative learning effects and therefore less behavioural change achieved in Swiss PETE than in Swedish PETE. The main difference was the amount of reflection about said nature experiences, which was more present in the Swedish context. Incorporating this reflective aspect into PE curricula could be an approach to increase this reflective aspect, in Switzerland as well as in Sweden.

If democratic society is to avert the dire straits that may come from decreasing levels of political participation and civic engagement, all potential explanatory factors must be explored. The purpose of this paper is to i) elucidate how the modeling and self-efficacy mechanisms of social learning theory affect individuals’ decisions to participate politically or not, and ii) assess the applicability of the relatively unutilized social learning theory in studies on political socialization and participation, respectively. By conducting a study composed of life history interviews, the paper aims to contribute to the research field by providing new explanations on how and why participatory behavior occurs in individuals, potentially filling a research gap by using and developing the previously unutilized social learning theory. The study finds that the proposed social learning theory mechanisms appear to have some explanatory power in the context of individuals’ political participation and asserts that social learning theory may very well be applicable in similar future studies as a complement to other explanatory factors.

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