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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The center of his existence| Domestic architecture & class identity in nineteenth-century Lincoln County, Tennessee

Rael, Jillian 23 February 2016 (has links)
<p> "The Center of His Existence: Domestic Architecture &amp; Class Identity in Nineteenth-Century Lincoln County, Tennessee" presents the Whitaker family of Lincoln County, Tennessee as an example of a middle class forming in the rural South during the Antebellum period. In showing the family's interests in economic diversity in the fields of agriculture and industry, religious involvement, and Northern-style progress, this thesis makes the case for a wider class-identity taking shape in provincial areas of the South. Moreover, it shows that the originating culture of the Whitaker family impacted their migration patterns and shaped the culture of their final location of choice. Finally, it argues that architectural expression, particularly pertaining to the family home, should be considered a primary source in considering how past peoples viewed their own socio-economic standing within their time and place. In the case of Newton Whitaker, whose home is under examination here, the blending of high style and vernacular variations overlaid upon the common I-house design stands to show that he saw himself somewhere in the middle of the economic and social stratum. Locally, other houses show a similar mentality, particularly the home of Alexander Greer, a man of similar age, lineage, and upbringing. This thesis shows that although class-identity takes years to fully form, one's beliefs, values, and place in their local community is revealed through their choice in artistic expression, namely the family home, a place where all the community sees a reflection of its owner in its design and style. </p>
2

Functional modelling of complex multi‑disciplinary systems using the enhanced sequence diagram

Yildirim, Unal, Campean, Felician 05 August 2020 (has links)
Yes / This paper introduces an Enhanced Sequence Diagram (ESD) as the basis for a structured framework for the functional analysis of complex multidisciplinary systems. The ESD extends the conventional sequence diagrams (SD) by introducing a rigorous functional flow-based modelling schemata to provide an enhanced basis for model-based functional requirements and architecture analysis in the early systems design stages. The proposed ESD heuristics include the representation of transactional and transformative functions required to deliver the use case sequence, and fork and join nodes to facilitate analysis of combining and bifurcating operations on flows. A case study of a personal mobility device is used to illustrate the deployment of the ESD methodology in relation to three common product development scenarios: (i) reverse engineering, (ii) the introduction of a specific technology to an existent system; and (iii) the introduction of a new feature as user-centric innovation for an existing system, at a logical design level, without reference to any solution. The case study analysis provides further insights into the effectiveness of the ESD to support function modelling and functional requirements capture, and architecture development. The significance of this paper is that it establishes a rigorous ESD-based functional analysis methodology to guide the practitioner with its deployment, facilitating its impact to both the engineering design and systems engineering communities, as well as the design practice in the industry.
3

A plm implementation for aerospace systems engineering-conceptual rotorcraft design

Hart, Peter Bartholomew 08 April 2009 (has links)
The thesis will discuss the Systems Engineering phase of an original Conceptual Design Engineering Methodology for Aerospace Engineering-Vehicle Synthesis. This iterative phase is shown to benefit from digitization of Integrated Product&Process Design (IPPD) activities, through the application of Product Lifecycle Management (PLM) technologies. Requirements analysis through the use of Quality Function Deployment (QFD) and 7 MaP tools is explored as an illustration. A "Requirements Data Manager" (RDM) is used to show the ability to reduce the time and cost to design for both new and legacy/derivative designs. Here the COTS tool Teamcenter Systems Engineering (TCSE) is used as the RDM. The utility of the new methodology is explored through consideration of a legacy RFP based vehicle design proposal and associated aerospace engineering. The 2001 American Helicopter Society (AHS) 18th Student Design Competition RFP is considered as a starting point for the Systems Engineering phase. A Conceptual Design Engineering activity was conducted in 2000/2001 by Graduate students (including the author) in Rotorcraft Engineering at the Daniel Guggenheim School of Aerospace Engineering at the Georgia Institute of Technology, Atlanta GA. This resulted in the "Kingfisher" vehicle design, an advanced search and rescue rotorcraft capable of performing the "Perfect Storm" mission, from the movie of the same name. The associated requirements, architectures, and work breakdown structure data sets for the Kingfisher are used to relate the capabilities of the proposed Integrated Digital Environment (IDE). The IDE is discussed as a repository for legacy knowledge capture, management, and design template creation. A primary thesis theme is to promote the automation of the up-front conceptual definition of complex systems, specifically aerospace vehicles, while anticipating downstream preliminary and full spectrum lifecycle design activities. The thesis forms a basis for additional discussions of PLM tool integration across the engineering, manufacturing, MRO and EOL lifecycle phases to support business management processes.

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