SACM - United Kingdom
Permanent URI for this collectionhttps://drepo.sdl.edu.sa/handle/20.500.14154/9667
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Item Restricted Design, Development and Deployment of Customisable Mobile and IoT Systems to Enhance Mosquito Surveillance(University College London, 2025-04-10) Aldosery, Aisha; Kostkova, PattyMosquito-borne diseases pose significant public health challenges in tropical and subtropical regions, requiring precise and efficient surveillance methods. Traditional field data collection methods often lack the accuracy, timeliness and efficiency required to control outbreaks. This research advances mosquito field surveillance by designing, developing, and deploying two digital solutions customised for distinct environmental settings in Northeast Brazil and Madeira Island: a Mobile Surveillance System and an Internet of Things (IoT) Environmental Monitoring System. Developed through iterative processes and stakeholder engagement, these adaptable and scalable systems enhance the accuracy and granularity of data collection. The Mobile Surveillance System was adapted to regional requirements: in Brazil, it comprises a mobile app for field agents and a web platform for supervisors; in Madeira, it combines both functionalities into a single, unified mobile app. The implementation of both applications shares a common architecture that not only proves the systems’ generalisability but also boosts operational efficiency and data accuracy by digitising field data, supporting field agents, and aiding supervisors in managing activities. The IoT-based Environmental Monitoring System, featuring a five-layer architecture, including Arduino microcontrollers, weather and water sensors, and a water pump, autonomously and continuously captures high-resolution data, offering deeper insights into environmental influences on mosquito populations and supporting precise, location-specific predictive modelling. Detailed statistical analyses using Bayesian hierarchical models and correlation studies were conducted to pinpoint critical environmental predictors of mosquito breeding. Furthermore, a neural network classification-based predictive model was developed, enhancing weekly mosquito presence predictions by analysing temporal and sequential environmental patterns. This research distinguishes itself through its real-world deployments, addressing infrastructure, logistics, and technology challenges, while underscoring the importance of a process-oriented approach in tool development and recommending longitudinal deployments to assess the long-term impact of these technologies on mosquito population control and disease management in diverse environments.14 0Item Restricted The Optimal Selection of Financial Portfolios Within The Context of Tadawul Saudi Stock Exchange(City University of London, 2024) Almulhim, Deem Khalid I; Broom, MarkThe Tadawul Stock Exchange, a key component of the Saudi Tadawul Group, is the focus of this investigation, which will examine the exchange's portfolio management dynamics. As the financial business sector as a whole is undergoing extraordinary changes brought about by innovation, globalization, and evolving market structures, understanding portfolio improvement in Tadawul becomes relevant. Using positive thinking and a logical methodology, the study employs advanced financial assumptions to identify a portfolio with fundamental differences and pinpoint the productive Tadawul area using verifiable stock prices for the period November 2020 to October 2023. Tadawul reserves were identified during exploration in 2021. The participant engages in the largest exchange trading in the Middle East and is a significant factor in the global financial climate. This review is expected to add important information to portfolio management methodologies in this unique environment. A comprehensive audit philosophy, including information mining strategies using Python libraries, ensures audit reliability and legitimacy. The cross- sectional investigation covers this period and focuses on 125 selected organizations out of 231 registered in Tadawul. The information diversity process involves careful pre-processing to resolve issues such as missing values and inconsistencies. The review determines performance returns using Excel Solver, combining equal-weight portfolios, the global portfolio with the smallest difference, and portfolios that form an efficient frontier. The results of the equal-weighted portfolio show the significance of portfolio diversification in the Tadawul, with a Sharpe ratio of 0.104, risk of 7.2774 percent, and return of 0.7598 percent. The global portfolio has a minimum risk ratio of 1.115%, a return of 0.2012%, and a Sharpe ratio of 0.175. Additionally, the review differentiates between a portfolio that produces the most extreme Sharpe ratio with a return of 0.688%, a portfolio risk of 1.6374%, and a Sharpe ratio of 0.421. The efficient frontier, which includes 23 portfolios, provides investors with valuable information about risk and return. This study contributes to a deeper understanding of Tadawul Stock Trading's portfolio management and contributes to the broader field of financial portfolio simplification.37 0Item Restricted The impact of risk and uncertainty on healthcare project delivery and its effect on intra-group conflict in the context of Saudi Arabia(The University of Manchester, 2024-07-25) Kheel, Metib Khalifa; Kirkham, RichardHealthcare construction projects are characterised by temporal risks and uncertainties, which may give rise to conflict. Decision-making within project teams is therefore an important focus of academic enquiry, particularly in a post-COVID-19 era, where healthcare projects play a crucial role in supporting pandemic recovery. Understanding the landscape that characterises projects in the healthcare setting could provide useful insights into broader project delivery issues and the effects of decision-making in situations of risk and uncertainty. This thesis describes a qualitative exploratory single case study situated within the King Faisal Specialist Hospital and Research Centre (KFSHRC) in the Kingdom of Saudi Arabia; semi-structured interviews provide an evidence base by which to understand the presence of risk, uncertainty, and intra-group conflict. The findings of this study identify the prevalence of conflict within project teams, exposing the detrimental effects of inconsistent decision-making. Moreover, the study uncovers how risk and uncertainty may directly impact decision-making processes and project delivery schedules, and thus contributing to the existing body of knowledge in the broader field of project studies. The findings illustrate the impacts of regulatory changes, supply chain disruptions, unexpected delays, and cost overruns. In order to moderate the effects of these impacts, the thesis offers recommendations for healthcare construction stakeholders, emphasising the development of robust mitigation strategies and contingency plans. These recommendations advocate for targeted training in project management, risk assessment, and crisis management. By embracing these measures, stakeholders may proactively manage the multifaceted challenges, thus enabling the successful completion of healthcare construction projects in the dynamic landscape of risk and uncertainty.17 0Item Restricted Risk, Corpora, and Discourse: The Construction of Risks to Life in News Media(Lancaster University, 2024-03-28) Alibri, Rakan; Baker, PaulThis thesis investigates the language of risk reporting, more precisely how ten British newspapers use language to discursively construct four “risks to life”: terror attacks, earthquakes, road accidents, and heart attacks. The media do not allot space to these risks equally or in accordance with risk level (i.e., based on number of deaths and likelihood of occurrence). In addition to the media, public perception of risk in the second half of the 20th century was noteworthy for accepting serious everyday risks (i.e., those causing a high number of deaths) while rejecting new low-level technological risks (Zinn & Taylor-Gooby, 2006). The approach of this thesis comprises theories and methodologies from Critical Discourse Studies (CDS) and corpus linguistics. The interdisciplinarity nature of CDS facilitates drawing upon theoretical frameworks from media and risk studies. News values, which play a role in news story selection, identify the newsworthiness of the risks, while risk characteristics, qualities found to influence public risk perception by the psychometric paradigm, enhance the interpretation of risk construction and how that might influence the public perception. The data comprise approximately 14 million tokens of news articles distributed unevenly between four corpora but from identical sources and timeframes (January 2017 to January 2020). The analysis focuses on three aspects: risks to life (events), related social actors, and consequences (i.e., death). It also identifies news values and risk characteristics around these aspects. The findings highlight discursive strategies in risk reporting: dramatisation and naturalisation, (im)personalisation, blame / responsibility, and risk management. These contribute differently to the construction of the risks to life and can potentially be linked to how media amplify or attenuate risks in society, a consequence of media language use. I conclude with their manifestation in reporting the risks to life and how they might be linguistically and discursively realised.32 0Item Restricted The Relationship Between Risk Management Practices and Investment Performance in the Context of OPEC and OPEC+(Saudi Digital Library, 2023) Alsalamah, Faisal; Park, SeyoungInvesting in a complicated market structure where it is managed by what economists refer to as a cartel can be challenging since the movement of the market can be unpredictable. Also, the application of the risk management practices can be beneficial in such market once the investor comprehends how the market operate. This literature will present the Relationship between risk management practices and investment performance in the context of OPEC and OPEC+.48 0Item Restricted A Mixed-Methods Study to Investigate the Awareness by Pilgrims and the Saudi Authorities of Health Risks Arising From the Hajj Pilgrimage in Saudi Arabia(Saudi Digital Library, 2023-09-28) Almehmadi, Mater; David, AlexanderOne of the most important factors in developing preventative measures is awareness of health risks among public authorities and the public themselves. The coronavirus pandemic of 2020-2023 has exposed significant weaknesses in public health systems that need to be addressed, although research has so far been limited with respect to studies that have explored the perceptions of both the public and authorities about the uptake of preventative health measures. As it is the host of the annual Hajj pilgrimage, Saudi Arabia offers a good case study of the health management of one of the biggest mass gatherings in the world. Although the health strategy here usually involves an array of preventative measures, the uptake among pilgrims is extremely low. As a case study exploring the factors that determine uptake, the Hajj pilgrimage is approached in this dissertation using a mixed methodology for the collection of data from the officials of the Hajj and the individuals who participate in it. Some 280 participants were canvassed in the quantitative study. The findings are that 94% considered the Hajj to be safe and limited themselves to taking pre-travel advice on health, while 70% of the respondents reported the diversity of the pilgrims to be the main factor threatening health outcomes. Overall, the study reported a significant shortfall in pilgrims’ perception of the health risks associated with the Hajj pilgrimage. Qualitative research was then utilised to collect data from 17 Hajj officials, using semi-structured interviews followed by thematic analysis. The key themes that emerged in the analysis include, first, the safety of the Hajj as perceived by Saudi officials; secondly, in the face of health risks, how the safety of pilgrims is maintained by Saudi officials; thirdly, avoiding the health risks of the Hajj pilgrimage; fourthly holding training sessions for the Hajj workers; fifthly, the pilgrims’ awareness of health risks; sixthly, the education of pilgrims about health risk in their individual countries; and finally, the use of new technologies to raise the pilgrims’ awareness about health instructions and measure their satisfaction regarding the outcomes.21 0