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Physical Sciences and Mathematics Commons™

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Computer Sciences

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University of Kentucky

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2015

Articles 1 - 5 of 5

Full-Text Articles in Physical Sciences and Mathematics

Smart Sensing And Mobile Computing, Guihai Chen, Dakshnamoorthy Manivannan, Chen Qian, Fangming Liu, Jinsong Han Nov 2015

Smart Sensing And Mobile Computing, Guihai Chen, Dakshnamoorthy Manivannan, Chen Qian, Fangming Liu, Jinsong Han

Computer Science Faculty Publications

No abstract provided.

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Large-Scale Geo-Facial Image Analysis, Mohammed T. Islam, Connor Greenwell, Richard Souvenir, Nathan Jacobs Jun 2015

Large-Scale Geo-Facial Image Analysis, Mohammed T. Islam, Connor Greenwell, Richard Souvenir, Nathan Jacobs

Computer Science Faculty Publications

While face analysis from images is a well-studied area, little work has explored the dependence of facial appearance on the geographic location from which the image was captured. To fill this gap, we constructed GeoFaces, a large dataset of geotagged face images, and used it to examine the geo-dependence of facial features and attributes, such as ethnicity, gender, or the presence of facial hair. Our analysis illuminates the relationship between raw facial appearance, facial attributes, and geographic location, both globally and in selected major urban areas. Some of our experiments, and the resulting visualizations, confirm prior expectations, such as the …

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Teaching Cybersecurity Using The Cloud, Khaled Salah, Mohammad Hammoud, Sherali Zeadally Apr 2015

Teaching Cybersecurity Using The Cloud, Khaled Salah, Mohammad Hammoud, Sherali Zeadally

Information Science Faculty Publications

Cloud computing platforms can be highly attractive to conduct course assignments and empower students with valuable and indispensable hands-on experience. In particular, the cloud can offer teaching staff and students (whether local or remote) on-demand, elastic, dedicated, isolated, (virtually) unlimited, and easily configurable virtual machines. As such, employing cloud-based laboratories can have clear advantages over using classical ones, which impose major hindrances against fulfilling pedagogical objectives and do not scale well when the number of students and distant university campuses grows up. We show how the cloud paradigm can be leveraged to teach a cybersecurity course. Specifically, we share our …

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Band Gap Engineering Via Doping: A Predictive Approach, Antonis N. Andriotis, Madhu Menon Mar 2015

Band Gap Engineering Via Doping: A Predictive Approach, Antonis N. Andriotis, Madhu Menon

Center for Computational Sciences Faculty Publications

We employ an extension of Harrison's theory at the tight binding level of approximation to develop a predictive approach for band gap engineering involving isovalent doping of wide band gap semiconductors. Our results indicate that reasonably accurate predictions can be achieved at qualitative as well as quantitative levels. The predictive results were checked against ab initio ones obtained at the level of DFT/SGGA + U approximation. The minor disagreements between predicted and ab initio results can be attributed to the electronic processes not incorporated in Harrison's theory. These include processes such as the conduction band anticrossing [Shan et al., …

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Numerical Investigation On Charring Ablator Geometric Effects: Study Of Stardust Sample Return Capsule Heat Shield, Haoyue Weng, Alexandre Martin Jan 2015

Numerical Investigation On Charring Ablator Geometric Effects: Study Of Stardust Sample Return Capsule Heat Shield, Haoyue Weng, Alexandre Martin

Mechanical Engineering Faculty Publications

Sample geometry is very influential in small charring ablative articles where 1D assumption might not be accurate. In heat shield design, 1D is often assumed since the nose radius is much larger than the thickness of charring. Whether the 1D assumption is valid for the heat shield is unknown. Therefore, the geometric effects of Stardust sample return capsule heat shield are numerically studied using a material response program. The developed computer program models material charring, conductive heat transfer, surface energy balance, pyrolysis gas transport and orthotropic material properties in 3D Cartesian coordinates. Simulation results show that the centerline temperatures predicted …

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