<p>Opponent: Anthony Allen Öhnström</p>

Fans and fandoms are ever more salient aspects of our everyday lives offline and linked to the Internet's growing influence also online, particularly on social media. While fans have generally been pathologized via mass media but also early academic representations especially prior to the founding of the interdisciplinary Fan Studies in the 1970s/1980s, which sought to actively counter negative fan representations and foreground fans' creative productivity, nowadays, even though many types of fans have been 'mainstreamed' and are generally accepted, specific fan types are still systematically discriminated against - even within Fan Studies - along the lines of socio-demographic variables. These marginalised fans are predominantly female, young, queer and non-white. Moreover, even though Fan Studies define fan identity as one of their focal concerns, linguistic research on fan identity, particularly regarding its narrative and interactive construction, has widely been neglected. However, as narrative interaction and specifically small stories (as propsed within the small story paradigm by Bamberg &amp; Georgakopoulou, 2007/8) have been found to play a very important role in the construction of identity, the investigation of how fan identity is constructed via small stories and - given the centrality of collective fandoms for fans - specifically shared (group) stories can severely contribute to fan (identity) research. Thus, combining decidedly linguistic research on narrative fan identity construction and the inclusion of previously marginalised fan communities, this thesis focuses on the construction of fan identity of Taylor Swift fans (Swifties) - a predominantly female and young fandom that has been ridiculed by mass media and dominant discourses - via shared stories. More specifically this study analyses the construction of Swiftie fan identity via shared stories both online in nicknames on Tumblr and Twitter and face to face in the form of a positioning analysis investigating the interactions of a Zoom focus group made up of five German Swifties. This research finds that within Swiftie nicknames Swiftie fan identity is centrally constructed by means of variously highly condensed, combined and/or personalised references (to shared stories of the overarching Swiftie community). The focus group interactions then reveal various positioning practices that are strongly intertwined with (often) more elaborate shared stories, which are 'shared' by the Swiftie participants both with regards to experiences on the story level and their interactive co-construction on the level of interaction. Despite their diverging local manifestations both within the investigated Swiftie nicknames and focus group interactions shared stories are centrally utilised to construct and communicate Swiftie fan identity as a particularly collectively experienced and defined ingroup identity that confers belonging and further functions as a shield against outgroup discrimination. Further research should then enlarge the present investigative focus to include also other online platforms and fan communicative acts, supplementary and also offline implemented focus groups and field studies, more heterogenous participants with regard to often neglected socio-demographic variables (next to age and gender) as well as other (marginalised) fandoms outside of the Swiftie community.

No description available.

With the shifting landscape of computing hardware architectures and the emergence of new computing environments (e.g., large main-memory systems, hundreds of CPUs, distributed and virtualized cloud-based resources), state-of-the-art designs of transaction processing systems that rely on conventional wisdom suffer from lost performance optimization opportunities. This dissertation challenges conventional wisdom to rethink the design and implementation of transaction processing systems for modern computing environments.<div><br></div><div>We start by tackling the vertical hardware scaling challenge, and propose a deterministic approach to transaction processing on emerging multi-sockets, many-core, shared memory architecture to harness its unprecedented available parallelism. Our proposed priority-based queue-oriented transaction processing architecture eliminates the transaction contention footprint and uses speculative execution to improve the throughput of centralized deterministic transaction processing systems. We build QueCC and demonstrate up to two orders of magnitude better performance over the state-of-the-art.<br></div><div><br></div><div>We further tackle the horizontal scaling challenge and propose a distributed queue-oriented transaction processing engine that relies on queue-oriented communication to eliminate the traditional overhead of commitment protocols for multi-partition transactions. We build Q-Store, and demonstrate up to 22x improvement in system throughput over the state-of-the-art deterministic transaction processing systems.<br></div><div><br></div><div>Finally, we propose a generalized framework for designing distributed and replicated deterministic transaction processing systems. We introduce the concept of speculative replication to hide the latency overhead of replication. We prototype the speculative replication protocol in QR-Store and perform an extensive experimental evaluation using standard benchmarks. We show that QR-Store can achieve a throughput of 1.9 million replicated transactions per second in under 200 milliseconds and a replication overhead of 8%-25%compared to non-replicated configurations.<br></div>

No description available.

The general aim of this study was to gain insight into the perceptions and experiences of line managers regarding the impact of an employee wellness programme (EWP) on employee wellness and performance at a selected municipality in KwaZulu-Natal. As a purposive sample, ten line managers were selected to participate in the study by means of semi-structured interviews. The literature review aimed to conceptualise wellness, employee wellness and employee performance, as well as to explore the impact of EWPs on employee wellness and performance. The specific empirical study aims were to determine line managers’ level of awareness and knowledge of the municipality EWP and its purpose, to explore the challenges faced by line managers within the EWP, to explore if the line managers perceived and experienced the municipality EWP as being beneficial to employee wellness and whether participating in the EWP improved employee performance. Lastly, the aim was to make recommendations for improvement that can assist the municipality in enhancing the impact of the EWP on employee wellness and performance within the industrial psychology discipline, and in particular when it comes to employee wellness. The research findings reveal that line managers were aware of and had knowledge about the existence of the EWP through marketing campaigns, inductions and activities. They also confirmed they had personal engagement experience through participation in the programme. They perceived the main purpose of the EWP as being to support employees in achieving a work-life balance and providing counselling and advisory services. Participants noted certain challenges with regard to participating in the programme, such as fear of being judged, victimised and stigmatised, and a lack of confidentiality and trust, which affects employees’ privacy and security. Also, they doubted wellness officer competence, which included the necessary skills and training for dealing with complex cases. Lastly, gender and cultural beliefs also posed challenges. Line managers found it beneficial to participate in the EWP. It improved employee wellness and performance. Employees developed mechanisms to cope with work, personal and emotional problems. Wellness officer availability, competence and skills were recommended by participants as ways of enhancing the EWP. Involvement of other stakeholders was another recommendation for improvement. This involvement would include wellness champions, organised labour and line managers. Programme managers should consider increasing EWP awareness by improving marketing, while emphasising programme benefits and confidentiality. / Industrial and Organisational Psychology / M. Com (Industrial and Organizational Psychology)

Thèse produite en partenariat avec la Ferme d'hiver, centre de recherche industrielle pour l'agriculture en environnement contrôlé. / L’agriculture en environnement contrôlé (AEC) est une pratique agricole de haute technologie où la culture de plantes et son environnement sont soumis à une certaine forme de contrôle afin d’obtenir des rendements plus élevés et une efficacité de production accrue. L’AEC est essentielle en raison de son impact sur la disponibilité des terres arables, l’utilisation de l’eau et l’efficacité énergétique face à l’augmentation de l’insécurité alimentaire mondiale. Les systèmes de AEC sont contrôlés par le biais d’indicateurs de performance clés (IPC) complexes que les experts de plusieurs domaines, dont les ingénieurs et les agronomes, doivent optimiser. L’optimisation des IPC nécessite l’exploration de l’immense espace d’états du système d’AEC. Étant donné que ces systèmes sont complexes et hétérogènes, ils nécessitent une approche de modélisation et de co-simulation multi-paradigme dans laquelle les modèles utilisent les formalismes et les niveaux d’abstraction les plus appropriés. Nous proposons une architecture de co-simulation de AEC capable de capturer la dynamique des entités qui composent notre système à plusieurs niveaux d’abstraction. Nous présentons nos résultats démontrant la validité de notre approche / Controlled environment agriculture (CEA) is a high-tech agricultural practice where the crop and its environment are subject to some form of control to achieve higher yields and produc- tion efficiency. CEA is critical for its impacts on arable land availability, water usage, and energy efficiency amid the rise of global food insecurity. CEA systems are controlled through complex key performance indicators (KPI) that experts of multiple domains, including engi- neers and agronomists, must optimize. The optimization of KPI requires exploring the vast state space of the CEA system. As such systems are complex and heterogeneous, they re- quire a multi-paradigm modeling and co-simulation approach in which models use the most appropriate formalisms and levels of abstraction. We provide a co-simulation architecture for CEA to capture the dynamics of the entities that comprise our system at multiple levels of abstraction and present our results showing the validity of our approach.

Ce travail souligne la nécessité d’un changement de paradigme sociétal face aux défis environnementaux contemporains et met l’accent sur l’éducation comme vecteur essentiel de cette transformation. Il se concentre sur les écoles vertes, qui tendent à s’enraciner dans une approche holistique de l’éducation environnementale, afin de cerner leur contribution face à la crise environnementale actuelle. Il commence par l’exploration de l’impact significatif de l’activité humaine sur la biosphère et le système terrestre, mettant en évidence l’influence profonde de l’anthropocentrisme. Ensuite, il souligne l’insuffisante intégration de la dimension écologique dans l’éducation formelle qui est principalement attribuable à l’influence persistante des pressions économiques et politiques sur la pensée et la pratique éducatives dominantes. Il poursuit en analysant les mouvements d’écoles vertes sur le plan théorique ainsi que leur orientation sur une approche scolaire environnementale globale. Enfin, il combine une analyse de la littérature sur les mouvements Éco-écoles et Enviroschools avec une étude de terrain menée en Uruguay auprès de l’école pionnière du mouvement Escuelas Sustentables afin de mettre en évidence leurs contributions respectives aux effets directs (impact environnemental) et indirects (littératie environnementale). Il conclut que les écoles vertes offrent une réponse multidimensionnelle aux enjeux soulevés par la crise environnementale actuelle. À ce niveau, il est remarqué que, parmi les mouvements d’écoles vertes étudiés, Enviroschools se distingue de manière significative en contribuant à la fois de manière substantielle à l’impact environnemental et à la littératie environnementale, notamment grâce à son enracinement local et à sa valorisation des perspectives autochtones locales. Dans l’ensemble, il découle de ce travail que l’efficacité des écoles vertes pour répondre à la crise environnementale repose sur leur décolonisation, intégrant les perspectives autochtones de manière culturellement appropriée pour assurer une adaptation à un monde en déséquilibre. / This work highlights the need for a societal paradigm shift in the face of contemporary environmental challenges and emphasizes education as an essential vector of this transformation. It focuses on green schools, which tend to be rooted in a holistic approach to environmental education, in order to assess their contribution to the current environmental crisis. It begins by exploring the significant impact of human activity on the biosphere and the Earth system, highlighting the profound influence of anthropocentrism. Next, it underscores the insufficient integration of the ecological dimension in formal education, mainly due to the ongoing influence of economic and political pressures on prevailing educational ideologies and practices. It continues by analyzing green school’s movements on a theoretical level as well as their orientation towards a whole school environmental approach. Finally, it combines an analysis of the literature on the Eco-Schools and Enviroschools movements with a field study carried out in Uruguay with the pioneer school of the Escuelas Sustentables movement to assess their respective contributions to direct (environmental impact) and indirect (environmental literacy) effects. It concludes that green schools offer a multi-dimensional response to the issues raised by the current environmental crisis. At this level, it is noticed that, among the green school’s movements studied, Enviroschools stands out as making a substantial contribution to both environmental impact and environmental literacy, thanks in particular to its local roots and its valuing of local indigenous perspectives. Overall, it follows that the effectiveness of green schools in responding to the environmental crisis rests on their decolonization, integrating indigenous perspectives in culturally appropriate ways to ensure adaptation to a world in imbalance.

The purpose of this research journey was twofold: (1) to investigate the ways in which the lives of women married to clergymen have been influenced by their position in the Dutch Reformed Church and (2) to collaboratively present ways of caring and supporting these women living within this reality. Discourse analysis explored the taken-for-granted truths and power relationships that inform these women's daily lives. Fifteen women embarked on this feminist narrative participatory action research journey, not only to tell their stories but also to negotiate for change in current practices as well as their own contexts. This research journey challenges the institutional structure of the Church through narratives of hope, survival and pain, as storied in a book (Lamentations and Butterflies, 2003), that were collaboratively constructed by the women living these realities. This book and research journey offers a deeper understanding of the experience of being a clergyman's wife in the Dutch Reformed Church. / Practical Theology / M.Th. (Practical Theology)

This research journey investigated the ways in which (1) the lives of adolescents have been influenced by parental divorce and subsequent remarriage, (2) exploring the relationships participants have with biological, nonresidential fathers and (3) to collaboratively present ways of doing family in alternative. Four adolescent girls took part in group conversations where they could were empowered to have their voices heard in a society where they are usually marginalized and silenced. As a result of these conversations a family game, FunFam, was developed that aimed to assist families in expanding communication within the family. Normalizing prescriptive discourses about divorce and remarriage were deconstructed to offer participants the opportunity to re-author their stories about their families. The second part of the research journey explored the problem-saturated stories that these four participants had with their biological, nonresidential fathers. They deconstructed the discourses that influenced this relationship and redefined the relationship to suit their expectations and wishes. / Practical Theology / M.Th.