965 research outputs found
Sort by
QCD anatomy of photon isolation
Full text linkEnergetic photons are a short-distance probe to search for new physics and test the standard model at colliders. In order to differentiate photons from different origins at hadron colliders, it is necessary to impose isolation requirements. These requirements restrict the hadronic radiation inside a cone around the photon. In this thesis, we present a factorization theorem for the QCD effects associated with photon isolation. We show that for small cone radius R, photon isolation effects can be captured by a fragmentation function describing the decay of a parton into a photon accompanied by hadronic radiation. We compute this fragmentation function for different isolation criteria. For small isolation energy, the cone fragmentation function factorizes further into jet and soft functions. Using renormalization-group methods, we resum the leading logarithms of R and the non-global logarithms of the ratio εγ of the isolation energy and the photon energy, so that we control all logarithmically enhanced terms in the cross section. Finally, in the limit of small R
and small εγ, we provide a simple formula to convert NNLO cross-section results from smooth-cone isolation to fixed-cone isolation
Family business reputation. Impact on selected stakeholder-related and organizational outcomes
Full text linkThis dissertation analyzes the entity-related reputational impact of family businesses on their stakeholders in three distinct ways. Firstly, it investigates the increasingly critical issue of sustainability reporting, examining whether family business reputation, compared to non-family business reputation, enhances the credibility of sustainability reports from the perspective of external stakeholders. Secondly, this dissertation explores how the explicit communication of a family's operational and strategic involvement in the business influences stakeholder perceptions of the family business, emphasizing that only family businesses recognized as such can leverage any entity-related reputation. Lastly, the dissertation contributes to family business reputation literature by situating its analysis within a regional context, highlighting how a strong regional reputation is fostered through close interactions with local stakeholders
Cultural Ripples and Brain Waves: Investigations into Mindfulness, Analytical Meditation, and Culture-Sensitive Research
Full text linkThis thesis extensively explores contemplative practices, specifically focusing on analytical meditation (i.e., Tibetan monastic debate) and short-term mindfulness interventions. Surprisingly, Study 1 revealed that short-form mindfulness training did not notably enhance self-control or attention, prompting further investigation into the effectiveness of these interventions. Study 2 explores the impact of monastic debate on absorption (marked by increased frontal theta slopes) and increased inter-brain synchrony during agreement versus disagreement. Study 3 introduces a biobehavioral model, derived from dialogues with Tibetan monastics, suggesting that debate could potentially enhance cognitive control, regulate emotions, and foster social connectivity, integrating these assumptions among empirical findings and confirming predictions of the model through quantitative phenomenological analysis. In a deviation from the initial hypothesis, Study 4 found that Western students surpassed experienced Tibetan monks and novice monks in complex working memory, association memory, and logic tasks. This finding questions the supposed culture-fairness of these testing methods. The discussion delves into the benefits and limitations of secularized short-form mindfulness-based practices, suggesting that their effectiveness hinges on the context of implementation and individual comprehension and application. Further, it is proposed that the potential and challenges of integrating traditional contemplative practices, such as monastic debate, into contemporary psychological research and practice underscore the necessity for a culturally sensitive approach and adaptable methods when researching these practices. This approach additionally emphasizes the importance of collaboration with the practitioners themselves. The thesis concludes by advocating for the preservation and adaptation of Tibetan monastic practices and recognizing the potential benefits of including Tibetan samples in future research on psychological processes. This thesis yields valuable insights into the cognitive impacts of contemplative practices and their potential for psychological transformation and well-being
The Cognitive Associations Between Subjective Vitality, Motivation to Conserve Energy, and Motivation for Cognitive Effort
Full text linkThe primary aim of this cumulative work is to examine how individuals mentally represent the relationships between subjective vitality, motivation to conserve energy, and motivation for cognitive effort. While validated German self-report measures for subjective vitality exist, no scales currently assess motivation to conserve energy or momentary motivation for cognitive effort. To address this gap, we developed and validated two self-report scales: the Motivation for Cognition Scale (MFC), which assesses motivation for cognition as a state (Study 1), and the Conservation of Human Energy Resources Index (CHERI), which measures motivation to conserve energy (Study 2). These measures were subsequently applied in a randomized control trial using experimental vignettes (Study 3), revealing that participants associate lower subjective vitality with greater motivation to conserve energy and reduced motivation for cognitive effort. Conversely, higher subjective vitality was linked to decreased motivation to conserve energy and greater motivation for cognitive effort. We discuss the significance of these findings for schema-based approaches, with a particular focus on understanding self-control failure
Developing the competence with discourse connectives during teenage years
Full text linkBuilt upon a combination of off-line production experiments and corpus analysis of data, this thesis provides a multifaceted investigation into the level of competence with discourse connectives during teenage years. Firstly, it discerns endogenous factors, related to the linguistic characteristics of connectives, that may render some of them more difficult than others. Secondly, it investigates exogenous factors, related to inter-individual differences in linguistic competence between young speakers, that may influence their mastery of discourse connectives. Thirdly, the current work also explores whether the mastery of connectives hinges on the context in which they are used. Furthermore, this thesis raises the question of young speakers’ sensitivity to different types of coherence signals spread in discourse, and whether they are receptive to non-connective cues when inferring coherence relations. Finally, this work also focuses on the potential for improving competence with connectives through learning activities. The evidence obtained in this work serves to both deepen our understanding of the development of the competence with connectives during a transitional period of teenage years and to enrich the ongoing discussion about the type of meaning that connectives encode, namely, whether this meaning is procedural, conceptual or a combination of both
Data sources:
BORIS Portal Bern Open Repository and I...BAF-Online: Proceedings of the Berner Al...HASBonline – Hefte zur Archäologie des M...Informationswissenschaft: Theorie, Metho...Jahrbuch Diakonie SchweizJournal of Eye Movement ResearchJournal of Radiation Oncology Informatic...BOP SerialsVersants. Revista suiza de literaturas r...
BORIS Theses
BORIS ThesesAccess Repository Dashboard
Do you manage BORIS Theses? Access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard!