Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"Process optimisation"”.
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Business Process Optimisation for an International FMCG Supply Chain
… view. To enrich the theoretical base of business process management, best practices were analysed. Supply chain priorities, as well as common problems affecting the stable operation of the supply chain, were discussed. These included the lack of resources, visibility, conflict of interest, the …
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Variation propagation modelling and cost-oriented process optimisation for aircraft assembly
… and time consuming variation management processes such as shimming in order to ensure the final assembly is within specification. This thesis focuses on how the overall production cost can be minimised, and presents a methodology to relate part manufacture and assembly variation to the …
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Quality by Design Approach to Advanced Particle Engineering, Process Optimisation and Upscaling of Electrohydrodynamic Atomisation Technology
… and application of QbD technique in its optimisation and subsequent upscaling of the process. The work presented in this research is a proof-of-concept; demonstrating the capacity for upscaling of this promising technology. This was first achieved by the utilisation of the EHDA technique …
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Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery.
… entails neatly designed enhanced oil recovery processes like Steam Assisted Gravity Drainage and the success of such technologies are critically dependent on accurate knowledge of reservoir, well and fluid properties of oil under variety of pressure and temperature conditions. This research …
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Modelling of an industrial fluidised bed dryer
… theory is needed to improve the drying model for process optimisation. An iterative numerical solution strategy computes the results quickly and avoids the need to solve coupled heat and mass transport equations. In the falling-rate drying periods, a lumped mass transfer coefficient obtained from …
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Aplicació per a la gestió d'encàrrecs per a establiments de restauració i menjar per a emportar
… objective is to cover the entire order process, from the establishment receives an order by a user to the order's delivery. The proposal's second aim is to optimise the process, trying to reduce the time of order's collection and the process' optimisation from the entrance to the next …
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Development and applications of novel optimal control algorithms
… on one hand for its implementation in the process industry and, on the other hand, as a novel nonlinear optimal control algorithm. The main feature of the technique is that it has been designed so as to achieve the correct optimum of the process in spite of inaccuracies in the mathematical …
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Amorphous calcium phosphate nanoparticles for biomedical cargo delivery
… could also be tailored, via coating selection. Process optimisation led to disperse ACP colloids of 50–300 nm at concentrations of up to 1% (w/v). The lead material proved to be size stable in complex media and was amenable to loading with diverse cargo – from soluble dyes and quantum dots to …
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Model-based approaches to support process improvement in complex product development
The performance of product development processes is important to the commercial success of new products. The improvement of these processes is thus a strategic imperative for many engineering companies — the aero-engine is one example of a complex product for which market pressures necessitate …
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Intelligent control for the centreless grinding of compliant, thin walled cylinders
… developments in the adaptive control of grinding processes. Requirements imposed on the design of computer control systems by the implementation of adaptive control techniques were considered. A manually controlled centreless grinding machine was automated and the mechanical capabilities of the …
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Formulation, Scaled & Controlled Engineering of Fibrous Dosage Technologies for Ocular Drug Delivery
… impact of environmental parameters on the EHDA process. When used, environmental conditions were stabilised and as a result denser, more controlled spray patterns were obtained in comparison to those produced in open lab conditions thus highlighting the importance of environmental control in the …
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Design and Synthesis of Inhibitors of Mycobacterium tuberculosis Menaquinone D (Mtb MenD) as Potential Therapeutics for Tuberculosis (Tb)
… on the 3-carboxy-4-quinolone N-oxide framework. Process optimisation of the synthetic route for 4-quinolone N-oxide preparation enabled the assembly of a compound library, to address potential issues of solubility, hydrogen bonding interactions in the allosteric site, and cross-membrane …
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Process developments and critical design attributes in buffer systems for the biopharmaceutical industry
… and operating expenditure. This work develops process improvements and identifies critical design attributes to enhance operational efficiency, sustainability, and flexibility. A comprehensive assessment of the current landscape was undertaken, combining literature review, professional design …
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Modeling multiphase solid transport velocity in long subsea tiebacks: numerical and experimental methods.
Transportation of unprocessed multiphase reservoir fluids from deep/ultra-deep offshore through a long subsea tieback/pipeline is inevitable. This form of transportation is complex and requires accurate knowledge of critical transport velocity, flow pattern changes, phase velocity, pressure drop, …
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An investigation into control strategies for activated sludge wastewater treatment plants.
The activated sludge process is widely used throughout the world for the treatment of wastewater from domestic and industrial users. This process is not normally efficiently controlled and hence increasingly important financial incentives and environmental considerations exist for improving the …
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The Development of a Hybrid Knowledge-Based System for Designing a Low Volume Automotive Manufacturing Environment. The Development of A Hybrid Knowledge-Based (KB)/Gauging Absences of Pre-Requisites (GAP)/Analytic Hierarchy Process (AHP) System for the Design and Implementation of a Low Volume Automotive Manufacturing (LVAM) Environment.
The product development process for the automotive industry is normally complicated, lengthy, expensive, and risky. Hence, a study on a new concept for Low Volume Automotive Manufacturing (LVAM), used for niche car models manufacturing, is proposed to overcome this issue. The development of a …
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In Situ Alloying of Titanium via Laser Powder Bed Fusion
… Ti-based alloy development directly during LPBF processing. The first stage of this work investigates a binary Ti–2.9Cu alloy fabricated from blended Ti and Cu powders. An optimal process window was established, yielding near-fully dense, crack-free samples. The as-built alloy comprised α-laths …
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On Application of Optimal Control to Intelligent Manufacturing
… the level of automation of manufacturing processes towards the paradigm of intelligent manufacturing is proposed. The case study considered is the milling of aluminum alloys through a three-axes Computer Numerical Control (CNC) machine tool. The developed controller is called Evaluation …
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Vibration assisted machining: Modelling, simulation, optimization, control and applications
… is essential and much needed to undertake such processes based on a scientific approach, i.e. the process to be quantitatively controlled and optimized rather than carried out with a trial-and-error manner. In this research, theoretical modelling and instrumental implementation issues for …
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Improved Polyhydroxyalkanoate Production from Selected Volatile Fatty Acids using Cupriavidus necator
… improve the understanding of the PHA production process by pure culture bacterial fermentation using Cupriavidus necator. Optimisation strategies involved the following investigations using shake flasks and 5 litre based batch fermentations:<br/><br/>Shake flask investigations determined that the …
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