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Analysis of Applying Dynamic Time Warping, Multi- Dimensional Scaling, and DBSCAN Methods to Cluster Scanpaths Data in Application of Air Traffic Management
Get PDFFederal Aviation Administration (FAA) is interested in efficient ways to train air traffic controllers (ATCs) due to the high cost and long training time. It is known that exposing trainees to the visual scanpaths of experts in en route air traffic control environment can be an efficient way to improve trainees’ performance in a relatively short amount of time (Kang and Landry, 2014). It is unknown whether the experts’ visual scanning behaviors can be leveraged to better train the novices in the tower environment. To do so, first there should be a way to effectively analyze experts’ visual scanpaths. Therefore, in this research, it was investigated whether the approach introduced by Kang et al. (2018) was applicable in application of air traffic management in tower environment
Effect of cinnamon oil nano-emulsion to control the foodborne bacteria Salmonella spp. on mung beans and sprouts
Get PDFFoodborne outbreaks due to Salmonella in pulses and legumes have increased recently. Essential oils extracted from plants have been recognized for their effectiveness in food preservations. It is due to their strong antifungal, antiviral, and antibacterial properties. The utilization of Cinnamon oil Nanoemulsion may help to develop novel techniques to prevent foodborne outbreaks. The purpose of this study was to find the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of cinnamon oil nanoemulsions against Salmonella species. Furthermore, to check the efficacy of antimicrobial nanoemulsions as a decontaminate for reducing Salmonella on mung bean seeds with sprouting and post-harvest storage. Cinnamon oil nanoemulsion was prepared with ultrasonication using Tween 80 as an emulsifier. The particle size of oil droplets was characterized using dynamic light scattering. A minimum inhibitory concentration assay was performed on six of Salmonella strains to find out the antimicrobial efficacy of cinnamon oil nanoemulsion. Cell-membrane integrity has been performed to confirm the results of MIC and MBC. The minimum inhibitory concentration (MIC) of cinnamon oil nanoemulsion for salmonella was 0.03125%. The minimum bactericidal concentration was MIC i.e., 0.3125%. Scanning electron microscope images showed distortion of bacterial cell membrane with 0.3125% of Cinnamon oil nanoemulsion. These data suggest that cinnamon oil nanoemulsion can be used as an effective natural antimicrobial agent to decontaminate the pulses and legumes against Salmonella spp.Foodborne outbreaks due to Salmonella in pulses and legumes have increased recently. Essential oils extracted from plants have been recognized for their effectiveness in food preservations. It is due to their strong antifungal, antiviral, and antibacterial properties. The utilization of Cinnamon oil Nanoemulsion may help to develop novel techniques to prevent foodborne outbreaks. The purpose of this study was to find the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of cinnamon oil nanoemulsions against Salmonella species. Furthermore, to check the efficacy of antimicrobial nanoemulsions as a decontaminate for reducing Salmonella on mung bean seeds with sprouting and post-harvest storage. Cinnamon oil nanoemulsion was prepared with ultrasonication using Tween 80 as an emulsifier. The particle size of oil droplets was characterized using dynamic light scattering. A minimum inhibitory concentration assay was performed on six of Salmonella strains to find out the antimicrobial efficacy of cinnamon oil nanoemulsion. Cell-membrane integrity has been performed to confirm the results of MIC and MBC. The minimum inhibitory concentration (MIC) of cinnamon oil nanoemulsion for salmonella was 0.03125%. The minimum bactericidal concentration was MIC i.e., 0.3125%. Scanning electron microscope images showed distortion of bacterial cell membrane with 0.3125% of Cinnamon oil nanoemulsion. These data suggest that cinnamon oil nanoemulsion can be used as an effective natural antimicrobial agent to decontaminate the pulses and legumes against Salmonella spp
Being Indigenous in Jim Crow Virginia: Powhatan People and the Color Line
Get PDFVirginia’s Racial Integrity Act of 1924 recodified the state’s long-standing racial hierarchy as a more rigid Black-white binary. Then, Virginia officials asserted that no Virginia Indians could be other than legally Black, given centuries of love and marriage across color lines. How indigenous peoples of Virginia resisted erasure and built their identities as Native Americans is the powerful story this book tells. Spanning a century of fraught history, Being Indigenous in Jim Crow Virginia describes the critical strategic work that tidewater Virginia Indians, descendants of the seventeenth-century Algonquian Powhatan chiefdom, undertook to sustain their Native identity in the face of deep racial hostility from segregationist officials, politicians, and institutions.Like other Southeastern Native groups living under Jim Crow regimes, tidewater Native groups and individuals fortified their communities by founding tribal organizations, churches, and schools; they displayed their Indianness in public performances; and they enlisted whites, including well-known ethnographers, to help them argue for their Native distinctness. Describing an arduous campaign marked by ingenuity, conviction, and perseverance, Laura J. Feller shows how these tidewater Native people drew on their shared histories as descendants of Powhatan peoples, and how they strengthened their bonds through living and marrying within clusters of Native Virginians, both on and off reservation lands. She also finds that, by at times excluding African Americans from Indian organizations and Native families, Virginian Indians themselves reinforced racial segregation while they built their own communities.Even as it paved the way to tribal recognition in Virginia, the tidewater Natives’ sustained efforts chronicled in this book demonstrate the fluidity, instability, and persistent destructive power of the construction of race in America.This book is published as part of the Sustainable History Monograph Pilot. With the generous support of the Andrew W. Mellon Foundation, the Pilot uses cutting-edge publishing technology to produce open access digital editions of high-quality, peer-reviewed monographs from leading university presses. Free digital editions can be downloaded from: Books at JSTOR, EBSCO, Internet Archive, OAPEN, Project MUSE, ScienceOpen, and many other open repositories.While the digital edition is free to download, read, and share, the book is under copyright and covered by the following Creative Commons License: CC BY-NC-ND 4.0. Please consult www.creativecommons.org if you have questions about your rights to reuse the material in this book.Laura J. Feller holds a PhD from George Washington University. She is retired as a staff historian in the Washington, D.C., Office of the National Park Service.Funding provided by the Andrew W. Mellon Foundation as part of the Sustainable History Monograph Pilot
