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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 12 of 12 for “"Engineering changes"”.
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Logic Synthesis for Engineering Changes
In the optimization phase, the Transduction method and the delay-reducing/delay-restricted Transduction method are employed to minimize the area or delay of the already rectified network. Compatible sets of permissible functions are utilized to increase the effectiveness of optimization. The final …
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Modeling and Managing Engineering Changes in a Complex Product Development Process
… and practitioners have overlooked in the past is Engineering Change Management (ECM).</p> <p>The vision behind this dissertation is to ultimately bridge this gap by identifying main characteristics of a New Product Development (NPD) process that are potentially associated with the occurrence and …
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Causes and impacts of Class One engineering changes : an exploratory study based on three defense aircraft acquisition programs
Past studies on engineering changes have focused on products other than defense aerospace products, and have concentrated primarily on the design-manufacturing interface within single companies. Thus, engineering changes in the context of US defense aerospace product development - where the user …
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A methodology for engineering design change analysis using system modelling and knowledge management technologies
In the current fiercely competitive market, engineering design change management in manufacturing companies is a critical factor for business success. Recognised as inevitable in product development, engineering changes may significantly influence lead time, development cost and product quality of …
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Process and system variation impacts on 777 wings manufacturing
… in labor hours. Other variations included engineering changes and rate breaks. Moving forward, the Wing Majors shop will redirect resources to control travelers, improve quality, and minimize quality assurance delays.
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Change propagation in large technical systems
Propagation of engineering changes has gained increasing scrutiny as the complexity and scale of engineered systems has increased. Over the past decade academic interest has risen, yielding some small-scale in-depth studies, as well as a variety of tools aimed at aiding investigation, analysis and …
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Engineering change modelling using a function-behaviour-structure scheme
Engineering changes are unavoidable and occur throughout the lifecycle of products. Due to the high interconnectivity of engineering products, a single change to one component usually has knock-on effects on other components causing further changes. This change propagation significantly affects the …
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Change management, production ramp up and the sustainable supply chain in the transportation industry
… result of this lack of experience is frequent engineering changes to address design corrections and improvements. High levels of change create uncertainty within both the supply chain and the engineering change management systems. Just as a supplier may not be able to meet production …
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Implementation of lean processes at a high-mix low-volume aerospace manufacturing facility in France
… of a process to evaluate the cost and return on engineering changes as well as improvement to the change management process. Through the analysis of case studies, this thesis questions the relevance of some widely accepted Lean tools in the context of complex high-mix low-volume environments. I …
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Synchronization of system-of-systems interfaces in military satellite communications
… draws on best practices from the lean and SoS engineering literature to improve interface synchronization and significantly reduce process cycle time. This leaner and more effective future-state change management process could be applicable to many government acquisition program offices to save …
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Investigating and Managing Design Margins throughout the Product Development Process
… new requirements without leading to costly engineering changes. If a change becomes necessary, the engineers might modify parameters where there are still margins with respect to the new requirements. Therefore engineers can avoid major redesigns to their existing components and systems. …
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Flexibility in early stage design of US Navy ships : an analysis of options
… design. Therefore, ships often require costly engineering changes throughout their service life. These are expensive both fiscally - because the Navy pays for engineering and installation work - and operationally - because either a warship cannot carry out a desired mission need or is carrying …