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- All Subjects: Development Economics
Description
This thesis encompasses research performed in the focus area of structural health monitoring. More specifically, this research focuses on high velocity impact testing of carbon fiber reinforced structures, especially plates, and evaluating the damage post-impact. To this end, various non-destructive evaluation techniques such as ultrasonic C-scan testing and flash thermography were utilized for post-impact analysis. MATLAB algorithms were written and refined for the localization and quantification of damage in plates using data from sensors such as piezoelectric and fiber Bragg gratings sensors. Throughout the thesis, the general plate theory and laminate plate theory, the operations and optimization of the gas gun, and the theory used for the damage localization algorithms will be discussed. Additional quantifiable results are to come in future semesters of experimentation, but this thesis outlines the framework upon which all the research will continue to advance.
ContributorsMccrea, John Patrick (Author) / Chattopadhyay, Aditi (Thesis director) / Borkowski, Luke (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / Department of Military Science (Contributor)
Created2015-05
Description
Stability in Afghanistan has always been and will always be impossible to achieve, so long as Afghanistan remains the most corrupt country on earth, and so long as the nation's illicit drug trade continues to flourish unchecked. Longstanding conflict in Afghanistan has fostered an environment in which the interest of the nation's influential individuals tips more in favor of instability than in favor of creating a peaceful, stable country under the rule of law. Progress in securing the nation and defeating the Taliban insurgents will not win the counterinsurgency campaign alone. Dramatic political and economic reforms are required if the nation is to have a future after the withdrawal of ISAF troops and eventual reduction in foreign aid. Only permanent changes in behavior in the country can have permanent effects on the government, economy, and welfare of the population.
ContributorsPerry, Michael MacMillan (Author) / Roberts, Daniel (Thesis director) / Pagel, Bruce (Committee member) / Barrett, The Honors College (Contributor) / Department of Finance (Contributor) / W. P. Carey School of Business (Contributor) / Department of Military Science (Contributor)
Created2014-05
Description
Stability in Afghanistan has always been and will always be impossible to achieve, so long as Afghanistan remains the most corrupt country on earth, and so long as the nation's illicit drug trade continues to flourish unchecked. Longstanding conflict in Afghanistan has fostered an environment in which the interest of the nation's influential individuals tips more in favor of instability than in favor of creating a peaceful, stable country under the rule of law. Progress in securing the nation and defeating the Taliban insurgents will not win the counterinsurgency campaign alone. Dramatic political and economic reforms are required if the nation is to have a future after the withdrawal of ISAF troops and eventual reduction in foreign aid. Only permanent changes in behavior in the country can have permanent effects on the government, economy, and welfare of the population.
ContributorsPerry, Michael MacMillan (Author) / Roberts, Daniel (Thesis director) / Pagel, Bruce (Committee member) / Barrett, The Honors College (Contributor) / Department of Finance (Contributor) / W. P. Carey School of Business (Contributor) / Department of Military Science (Contributor)
Created2014-05
Description
This work examines one dimension of the effect that complex human transport systems have on the spread of Chikungunya Virus (CHIKV) in the Caribbean from 2013 to 2015. CHIKV is transmitted by mosquitos and its novel spread through the Caribbean islands provided a chance to examine disease transmission through complex human transportation systems. Previous work by Cauchemez et al. had shown a simple distance-based model successfully predict CHIKV spread in the Caribbean using Markov chain Monte Carlo (MCMC) statistical methods. A MCMC simulation is used to evaluate different transportation methods (air travel, cruise ships, and local maritime traffic) for the primary transmission patterns through linear regression. Other metrics including population density to account for island size variation and dengue fever incidence rates as a proxy for vector control and health spending were included. Air travel and cruise travel were gathered from monthly passenger arrivals by island. Local maritime traffic is approximated with a gravity model proxy incorporating GDP-per-capita and distance and historic dengue rates were used for determine existing vector control measures for the islands. The Caribbean represents the largest cruise passenger market in the world, cruise ship arrivals were expected to show the strongest signal; however, the gravity model representing local traffic was the best predictor of infection routes. The early infected islands (<30 days) showed a heavy trend towards an alternate primary transmission but our consensus model able to predict the time until initial infection reporting with 94.5% accuracy for islands 30 days post initial reporting. This result can assist public health entities in enacting measures to mitigate future epidemics and provide a modelling basis for determining transmission modes in future CHIKV outbreaks.
ContributorsFries, Brendan F (Author) / Perrings, Charles (Thesis director) / Wilson Sayres, Melissa (Committee member) / Morin, Ben (Committee member) / School of Life Sciences (Contributor) / Department of Military Science (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12