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Point Cloud Technology for Analysis of Existing Structures
Title
Point Cloud Technology for Analysis of Existing Structures.
Creator
Cano, Jacob, Catbas, Necati, Apostolakis, Georgios, Zaurin, Ricardo, Walters, Lori, University of Central Florida
Abstract / Description
For this thesis, a study was completed on two different structures on the UCF Orlando campus through the use of both structural plans and point cloud technology. The results sought to understand the viability of point cloud technology as an accurate tool for the static and dynamic modal analysis of existing structures. For static analysis, a portion of the framing of Spectrum Stadium was rendered, modeled, analyzed and compared to a previous case study. The results emphasized how different...
Show moreFor this thesis, a study was completed on two different structures on the UCF Orlando campus through the use of both structural plans and point cloud technology. The results sought to understand the viability of point cloud technology as an accurate tool for the static and dynamic modal analysis of existing structures. For static analysis, a portion of the framing of Spectrum Stadium was rendered, modeled, analyzed and compared to a previous case study. The results emphasized how different users can render dissimilar member sizes and lengths due to human judgment on point cloud visuals. The study also found that structural plans cannot always be relied upon as the most accurate source for analysis as the new point cloud produced more accurate results than the structural plans when compared to the control model. For the pedestrian bridge, the structure was scanned, rendered and modeled for both static and dynamic modal analysis. The point cloud produced from scanning the bridge was modified twice in order to have three distinct point clouds with varying densities: fine, medium and coarse. These three cases were compared to structural plans in a static analysis. The fine point cloud produced the most accurate displacement results with an accuracy above 96%. The data sources were also compared to experimental data under dynamic modal analysis to discover how lessening the density of point clouds affect the accuracy of results. The analysis showed that point cloud technology can give you an accuracy of 88% and above for frequency while also producing MAC values exceeding 0.9 consistently. Also, changes in density were found to change the accuracy of results but the numeric values stayed within close proximity by not differing more than 10%. This thesis shines a light on the accuracy point cloud technology can ascertain and the potential it has within engineering.
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Date Issued
2019
Identifier
CFE0007438, ucf:52724
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007438
Supporting Learning in Educational 3D Virtual Environments: The Impact of Intergenerational Joint Media Engagement
Title
Supporting Learning in Educational 3D Virtual Environments: The Impact of Intergenerational Joint Media Engagement.
Creator
Michlowitz, Robert, Walters, Lori, Hughes, Charles, Vasquez, Trey, Blumberg, Fran, University of Central Florida
Abstract / Description
Studies have indicated that intergenerational relationships can assist children to learn more efficiently by providing support. As new forms of media have emerged and become pervasive in our society, it is important to understand how children use them to learn. Just as television coviewing has been observed by past researchers to aid youths to learn with parents and grandparents, three-dimensional virtual learning environments (VLE) are being investigated for their potential. This study seeks...
Show moreStudies have indicated that intergenerational relationships can assist children to learn more efficiently by providing support. As new forms of media have emerged and become pervasive in our society, it is important to understand how children use them to learn. Just as television coviewing has been observed by past researchers to aid youths to learn with parents and grandparents, three-dimensional virtual learning environments (VLE) are being investigated for their potential. This study seeks to examine the potential learning impact on children, ages 8 to 13, encountering a three-dimensional virtual learning environment with their grandparents. The primary research question this study examines is whether children exploring a 3D VLE with a grandparent learn the information being conveyed within the environment more effectively. A second aspect of the study considered if the grandparent-child pair would spend a greater amount of time in the virtual environment compared to a child exploring alone. Additionally, this research seeks to determine if there are other benefits a child could gain while interacting with a grandparent while using a VLE. This study used ChronoLeap: The Great World's Fair Adventure, an educational VLE developed at the University of Central Florida under a National Science Foundation Informal Science Education grant. ChronoLeap permits children to explore a virtual representation of the 1964-65 New York World's Fair where they can discover the roots of current technology in their 1960s form and its evolution to the present. This environment affords a child a unique opportunity to encounter a virtual recreation of an era in which their grandparents would have firsthand memories potentially eliciting the grandparent's personal reflections.
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Date Issued
2019
Identifier
CFE0007837, ucf:52810
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007837
To The CORE: The Congress of Racial Equality, the Seattle Civil Rights Movement, and the Shift to Black Militancy
Title
To The CORE: The Congress of Racial Equality, the Seattle Civil Rights Movement, and the Shift to Black Militancy.
Creator
Jimenez, Michael, Lester, Connie, Walters, Lori, Walker, Ezekiel, University of Central Florida
Abstract / Description
This thesis compares the history of the Congress of Racial Equality (CORE) to that of its Seattle chapter. The study traces the entire history of CORE from 1942-1968 as well as the history of Seattle CORE from 1961-1968. The goal of this examination is to identify why Seattle CORE successfully fended off the movement for black militancy and consequently why national CORE failed to do so. Juxtaposing the two radically different histories shows an integrated organization, bureaucratic...
Show moreThis thesis compares the history of the Congress of Racial Equality (CORE) to that of its Seattle chapter. The study traces the entire history of CORE from 1942-1968 as well as the history of Seattle CORE from 1961-1968. The goal of this examination is to identify why Seattle CORE successfully fended off the movement for black militancy and consequently why national CORE failed to do so. Juxtaposing the two radically different histories shows an integrated organization, bureaucratic leadership, a plan of action based on nonviolent actions, and a strong attachment to the black community were the central reasons for the success of Seattle CORE, and conversely, these areas were why national CORE struggled. Moreover, this study shows the events and failures over the first two decades created a susceptible environment for the organization to abandon CORE's nonviolent ideology and the subsequent disintegration of the Congress of Racial Equality as the walls of Jim Crow broke down.
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Date Issued
2012
Identifier
CFE0004327, ucf:49411
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004327