Browsing by Author "Alzahrani, Mohammed"
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- ItemRestrictedDESIGN AND OPTIMISATION OF A LIGHTWEIGHT HOLDER OF THE ZALY MONITORING SYSTEM FOR ADDITIVE MANUFACTURING(Saudi Digital Library, 2023) Alzahrani, Mohammed; Ashcroft, Ian; Parry, LukeThis project focused on designing and optimising a temporary holder for the ZALY monitoring system, produced by the Saudi company the National Company for Mechanical Systems. The objective was to create a holder that is lighter in weight while retaining its essential functional characteristics, enabling on-demand printing in remote areas to bypass supply chain challenges. This aim was achieved by the principles of Design for Additive Manufacturing, Topology Optimisation, and the distributed approach of AM supply chains. Following the project objectives, a seven-step methodology was introduced, commencing with problem definition and culminating in testing. A key objective was to use Material Extrusion (Fused Deposition Modelling) for the holder’s manufacturing. To pursue this, two thermoplastic polymers, (PLA/PHA) and (ABS-M30), were assessed and compared to the current holder’s material. The (PLA/PHA) polymer displays a maximum von Mises stress of (187.354×10^-3) MPa and a displacement of (11.293×10^-3 ) mm, was selected for further vibrational validation before topology optimisation. The redesigned holder demonstrated remarkable resilience, with a von Mises stress of (4.381) MPa and a displacement of (0.783) mm, achieving a notable (90) % volume reduction. It was subsequently manufactured using the Creality CR-10 Max, utilising (959) g of material at the cost of (£20.45). However, during the testing phase, an approximately (80) % discrepancy between FEA simulations and actual results underscored the intricacies of FDM layer anisotropy, among other factors. The research highlights the criticality of experimental validations, especially when dealing with dynamic loads in challenging terrains, aspects not considered in the vibrational assessment. Despite these uncertainties, the project provided valuable insights into the design of the ZALY system’s temporary holder.
- ItemRestrictedSTRATEGIC MARKETING SOLUTION FOR THE SKINNY FOOD CO.(Saudi Digital Library, 2023-11-13) Alzahrani, Mohammed; Dandan, ZhuThe Skinny Food Co is a Nottinghamshire-based company that produces healthier and low-calorie food alternatives to popular food products. The company has experienced remarkable growth since its inception in 2018 and today boasts over 500 product lines that are sold in high street retailers. The company's vision has remained to provide everyone with a full serving of the foods they love without sacrificing their health. To appeal to younger audiences, The Skinny Food Co has sponsored well-known sports brands Nottingham Panthers and Wigan RU. This report provides a strategic marketing analysis of The Skinny Food Co. The report explores the changing dynamics of the wider environment and how they might influence the future direction of the organisation. The report also conducts an internal analysis of the strategic capabilities of the organisation.
- ItemRestrictedUnderstanding Reflective Practice among Postsecondary EFL Instructors through the Sociocultural Lens of Cultural-Historical Activity Theory(2023-03-15) Alzahrani, Mohammed; Dabbah, AlmaReflective practice is extensively discussed in the field of teacher education, and it is rapidly increasing in the field of teaching English to speakers of other languages (TESOL). However, reflective practice is still underrepresented in the literature of English as a foreign language (EFL) instruction. The purpose of this study is to understand ways, affordances, and constraints of reflective practice among postsecondary EFL instructors in the preparatory-year program (PYP) at King Abdulaziz University in Jeddah, Saudi Arabia. Cultural-historical activity theory (CHAT) was adopted as a theoretical framework that undergirds a qualitative case study design and thematic analysis. Data was purposefully collected from five experienced postsecondary EFL instructors through a series of semistructured interviews, classroom observations, and document reviews. It was found that instructors engage in diverse ways of reflective practice inside the classroom using intuitive, dialogic and translingual actions. However, they engage in limited ways outside the classroom using online surveys and formal professional meetings. Instructors’ long teaching experience, sociocultural awareness, and reconceptualization were major affordances for instructors to engage in reflective practice. Course reports and technical PD were major constraints that limit instructors’ engagement in reflective practice. CHAT was an effective framework to analyze reflective practice in the bound system of the PYP. This study contributes to add knowledge about reflective practice in the literature of TESOL and applied linguistics and fills a methodological gap using CHAT as a framework. The findings of this study provide practical and research implications for postsecondary EFL education in Saudi Arabia and TESOL programs in general.