Saudi Cultural Missions Theses & Dissertations
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Item Restricted Assessing the Coordination Between the National Health Emergency Operations Centre and Other National Organisations in Disaster Management in Saudi Arabia(University of Portsmouth, 2024-09-10) Alqahtani, Abdulaziz; Teeuw, RichardThis research assesses the coordination between the National Health Emergency Operations Centre (NHEOC) and other national organisations in disaster management during Qatar's World Cup 2022. It explores the effectiveness of these efforts through a mixed-methods approach, incorporating secondary research, document analysis, online questionnaires, and semi-structured interviews. The study evaluates the structural, functional, and outcome aspects of NHEOC's coordination mechanisms. Key findings reveal the significant role of advanced technologies such as geographic information systems (GIS), real-time health monitoring systems, and multi-channel communication in enhancing situational awareness and response capabilities. The study highlights the success of interagency collaboration and communication protocols, enabling the NHEOC to coordinate effectively with internal departments of the Ministry of Health, government bodies, non-governmental organisations, and international partners. Despite the overall effectiveness, areas for improvement were identified, particularly in operational integration with the Public Health Authority (PHA), the need for multi-sectoral monitoring systems, and continuous professional development for disaster management personnel. Comparative analysis with other studies on major sporting events, such as previous World Cups and Olympics, reinforces the importance of multi-agency coordination and technological integration in disaster management. The study concludes with recommendations for enhancing future disaster management efforts, emphasizing the need for ongoing training, investment in advanced technologies, and the development of standardized communication procedures. These improvements aim to strengthen Saudi Arabia’s disaster management framework, ensuring a more resilient and effective response to future international events.25 0Item Restricted Interactive Impact of EWOM Message Characteristics and Format on Brand Evaluation and Online Brand Engagement: Towards an Integrative Framework(Saudi Digital Library, 2023-12-15) Alqahtani, Abdulaziz; Sharma, Piyush; Kingshott, Russel; Davcik, NebojsaWith the rapid rise in the popularity and usage of social media platforms and the associated sharing of electronic word of mouth (EWOM), many questions about its impact on customers’ attitudes and behaviours still need to be answered. This research aims to explore the interactive effect of message characteristics (valence and credibility) and message formats (text, picture, audio-visual and audio) on brand evaluation and online brand engagement, utilising the elaboration likelihood model (ELM) of persuasion theory to elucidate the current research phenomenon. A causal research design was applied through web-based experiments using mock Facebook and Twitter accounts for a fictitious airline brand explicitly developed for this research using Qualtrics software. To attain the objectives of the research, the participants were randomly assigned to one of 16 conditions in a 2 (EWOM message valence: positive vs. negative) x 2 (EWOM message credibility: high and low) x 4 (message formats: text, picture, audio-visual and audio) format using between-subject factorial design. Therefore, this research utilises a multi-method quantitative, conducting the web experiment through an online survey to test all the hypotheses data from a simple random sample of Facebook (N=480) and Twitter (N=480) users from Australia. The data were analysed using confirmatory factor analysis (CFA) conducted with AMOS 26.0 to test the measurement model, variance analysis via ANOVA, and Hayes’ PROCESS Macro with SPSS software to test the moderated mediation model proposed in this research. The findings demonstrate that positive EWOM message valence has a more substantial impact on brand evaluation than negative EWOM message valence. Additionally, the research results indicate a positive effect of EWOM message valence on online brand evaluation that is positively moderated (strengthened) by message credibility. Moreover, the findings display that brand evaluation significantly impacts online brand engagement. Furthermore, the results exhibit significant differences in the impact of EWOM message valence (but not credibility) on brand evaluation across different message formats. In particular, EWOM message valence has a more substantial impact on brand evaluation for the text format than picture, audio-visual and audio formats. Lastly, the findings show brand evaluation fully mediates the effects of message valence (but not credibility) on online brand engagement. This research offers several considerable contributions to the literature on EWOM messages by emphasising the relationship between EWOM message characteristics (valence and credibility) and brand evaluation. Moreover, this study is the first to illustrate the interactive relationships of four different EWOM message formats (text, picture, audio-visual, and audio) as moderators and two EWOM message characteristics (valence and credibility) and the first to identify their influence on brand evaluation. Furthermore, this research is considered to be among only a few that deeply explain the role of brand evaluation as a mediator between EWOM message characteristics (valence and credibility) and online brand engagement on two different social media platforms (Facebook and Twitter) in the airline context. In addition, this study offers some practical implications to marketing practitioners and brand managers on improving their understanding of online customers to maximise their brand engagement online. Besides the theoretical and practical contributions, it also provides some methodological contributions to EWOM research by conducting an experimental strategy using a multi-quantitative method.32 0Item Restricted Spatiotemporal regulation of organelle transport in Saccharomyces cerevisiae(Saudi Digital Library, 2023-10-24) Alqahtani, Abdulaziz; Ayscough, KathrynEukaryotic cells possess diverse membrane-bound compartments called organelles, which play crucial roles in facilitating specialised biochemical processes necessary for maintaining cellular metabolism under different growth conditions. Consequently, cells have evolved specific molecular mechanisms to control organelle inheritance and maintenance during the process of cell growth and division. Proper transport of organelles to their designated locations in dividing cells is crucial for maintaining a full complement of organelles across multiple cell generations. Dysfunctional organelle inheritance or maintenance has been linked to numerous human diseases. Saccharomyces cerevisiae, has been extensively used to study organelle-related processes, leading to a deeper understanding of fundamental concepts underlying organelle inheritance and functions. Furthermore, it is recognised that many core principles regarding organelle inheritance and maintenance are conserved throughout eukaryotic evolution. The first part of this research focuses on the transport of vacuoles and peroxisomes by studying the interactions between Class V myosin, Myo2, and its vacuolar and peroxisomal adaptors, Vac17 and Inp2, which are essential for organelle transport. Experimental validations confirm the significance of specific regions in Vac17 and Inp2, known as Myo2 interaction sites (MIS), for vacuole and peroxisome transport. This helped us to generate MIS tools that could be used to study the regulation of vacuole and peroxisome transport from the mother cell during the early stages of organelle transport. Additionally, by utilising the generated MIS tools, the thesis examines the influence of the protein kinase Kin4 and its paralog Frk1 on vacuole and peroxisome inheritance. The study demonstrates that Kin4 and Frk1 play a crucial role in stabilizing Vac17 and Inp2 in the mother cell by preventing their early degradation during organelle transport. These findings provide insights into the function of Kin4 in antagonizing the role of Cla4 during vacuole and peroxisome inheritance. Furthermore, the research aims to identify novel factors involved in vacuole and peroxisome transport. To accomplish this, an overexpression screen was conducted, which led to the identification of new genes associated with peroxisome and vacuole inheritance. This comprehensive analysis sheds light on the forward transport and retention of organelles. Notably, the study also identifies Yck1 and its paralog Yck2 as novel factors potentially involved in regulating peroxisome retention by influencing the function of Inp1, a peroxisomal membrane protein essential for peroxisome retention.17 0