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A computational approach analyzing global dynamics
Title
A computational approach analyzing global dynamics.
Creator
Kasti, Dinesh, Van der Vorst, R.C.A.M., Kalies, William D., Graduate College
Abstract/Description
We describe the lattice structure of attractors in a dynamical system and the lifting of sublattices of attractors, which are computationally less accessible, to lattices of forward invariant sets and attracting neighborhoods, which are computationally accessible. We also show how the use of these algebraic structures of lattices to help us to capture the information about underlying dynamical system in a more elegant way and with lesser computational cost. For example, they can be used to...
Show moreWe describe the lattice structure of attractors in a dynamical system and the lifting of sublattices of attractors, which are computationally less accessible, to lattices of forward invariant sets and attracting neighborhoods, which are computationally accessible. We also show how the use of these algebraic structures of lattices to help us to capture the information about underlying dynamical system in a more elegant way and with lesser computational cost. For example, they can be used to develop a much efficient algorithm to compute a global lyapunov function that describes the overall gradient dynamics.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005888
Format
Document (PDF)
A Computational Study on different penalty approaches for constrained optimization in radiation therapy treatment planning with a simulated annealing algorithm
Title
A Computational Study on different penalty approaches for constrained optimization in radiation therapy treatment planning with a simulated annealing algorithm.
Creator
Mohammadi Khoroushadi, Mohammad Sadegh, Shang, Charles, Ouhib, Zoubir, Graduate College, Leventouri, Theodora, Kalantzis, Georgios
Abstract/Description
Simulated Annealing algorithm is utilized for Intensity Modulated Radiation Therapy IMRT optimization. The goal in IMRT is to give the prescribed radiation dose to the tumor while minimizing the dose given to normal organs.
Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005891
Format
Document (PDF)
A Local Regression Approach to Computing the Cauchy Green Strain Tensor
Title
A Local Regression Approach to Computing the Cauchy Green Strain Tensor.
Creator
Kepley, Shane, Kalies, William D., Graduate College
Abstract/Description
The Cauchy Green strain tensor provides an effective tool for understanding unsteady flows. In particular, the dominant eigenvalue of this tensor has been seen to be a reliable estimator of the finite time Lyapunov exponent. We propose a new method for computing the CG strain tensor using a local quadratic regression LOESS technique. We compare this LOESS method with several classical methods using closed form flows, noisy flows, and simulated time series. In each case, the CG strain tensor...
Show moreThe Cauchy Green strain tensor provides an effective tool for understanding unsteady flows. In particular, the dominant eigenvalue of this tensor has been seen to be a reliable estimator of the finite time Lyapunov exponent. We propose a new method for computing the CG strain tensor using a local quadratic regression LOESS technique. We compare this LOESS method with several classical methods using closed form flows, noisy flows, and simulated time series. In each case, the CG strain tensor produced by the LOESS method is remarkably accurate and robust compared to classical methods.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005890
Format
Document (PDF)
Identification of others through biological motion
Title
Identification of others through biological motion.
Creator
Fuller, Nicholas, Kersten, Alan, Earles, Julie
Abstract/Description
In point-light models, visual cues are reduced to points of light indicating the major points of movements of the human body. Although we are able to recognize people through movement, accuracy of identification of strangers through point-light models is low. Connecting the major points of motion to represent a skeleton might enhance the ability to recognize strangers. This study also wishes to assess whether accuracy will be improved through learning general movement characteristics of...
Show moreIn point-light models, visual cues are reduced to points of light indicating the major points of movements of the human body. Although we are able to recognize people through movement, accuracy of identification of strangers through point-light models is low. Connecting the major points of motion to represent a skeleton might enhance the ability to recognize strangers. This study also wishes to assess whether accuracy will be improved through learning general movement characteristics of individuals. After a learning stage, participants were randomly assigned to match names with either point-light or skeleton models of actor movements. Two of the four actions performed by actors in the testing stage were previously seen during the learning stage. We expect identification from skeleton displays will be higher than for point light displays. We also expect higher accuracy for actions previously seen during the learning stage. The findings and their implications will be discussed.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA0005017
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Characterization of Lis-1 loss of function at the neuromuscular junction of Drosophila melangaster larvae
Title
Characterization of Lis-1 loss of function at the neuromuscular junction of Drosophila melangaster larvae.
Creator
Vargas, Leticia, Boerner, Jana, Godenschwege, Tanja A.
Date Issued
2013-04-05
PURL
http://purl.flvc.org/fcla/dt/3361219
Subject Headings
Lissencephaly, Drosophila melanogaster, Mutations
Format
Document (PDF)
Effects of GUS Gene Integration in Tobacco Plants
Title
Effects of GUS Gene Integration in Tobacco Plants.
Creator
Cruz, Laura, Zhang, Xing-Hai
Abstract/Description
The β-glucuronidase (GUS) gene was isolated in 1986 from the bacterium Escherichia coli. Since then it has been widely used as a reporter gene in genetically modified organisms serving to study gene expression and tissue specificity of different promoter sequences. We have introduced the GUS gene into tobacco plants through Agrobacterium-mediated genomic transformation. The plants that were confirmed to be expressing the GUS gene were grown to propagate a new (T1) generation. The T1 plants...
Show moreThe β-glucuronidase (GUS) gene was isolated in 1986 from the bacterium Escherichia coli. Since then it has been widely used as a reporter gene in genetically modified organisms serving to study gene expression and tissue specificity of different promoter sequences. We have introduced the GUS gene into tobacco plants through Agrobacterium-mediated genomic transformation. The plants that were confirmed to be expressing the GUS gene were grown to propagate a new (T1) generation. The T1 plants were analyzed for tissue specificity of GUS expression. The results to date seem to indicate that there is some variation in GUS expression between plant lines. The mechanisms of GUS gene integration in the plant genome as well as the possible effects it can have on a plant’s genomic structure are assessed.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA0005009
Subject Headings
College students --Research --United States.
Format
Document (PDF)
The effect of parasite infection on reproductive potential of bony fish
Title
The effect of parasite infection on reproductive potential of bony fish.
Creator
Young, Joy M., Whittington, Jim, Graduate College, Hughes, Colin
Abstract/Description
Accurate predictions of population growth, including reproduction, are vital for the effective management of fisheries. However, factors effecting reproductive potential in boney fishes are not entirely understood. In several species of fish, parasite infection has been associated with decreased fecundity including fewer and smaller eggs, shortened spawning season, and decreased larval survival. We examined the effect of parasite infection and life history parameters on egg quality of 40...
Show moreAccurate predictions of population growth, including reproduction, are vital for the effective management of fisheries. However, factors effecting reproductive potential in boney fishes are not entirely understood. In several species of fish, parasite infection has been associated with decreased fecundity including fewer and smaller eggs, shortened spawning season, and decreased larval survival. We examined the effect of parasite infection and life history parameters on egg quality of 40 spawning capable female common snook, Centropomus undecimalis, collected from 3 inlets on the Atlantic coast of Florida in the summer of 2013. Egg quality was measured as fatty acid DHA, PI, and EPA composition of eggs. Six major taxons of parasites were identified: Cestoda 1 adult, 68 trypanorhyncha larvae, Copepoda 1 Lernae sp., 62 Lernanthropus sp., Digenea 1 adult, Monogenea 1 adult, Nematoda 861 Contracecum sp., and Pentastomida 36 Sebekia sp.. In addition, dead parasites of unknown taxa 262 total were counted. Parasite infracommunities were described as total number of live parasites per individual, total number of dead parasites per individual, the Shannon Wiener Index H as a measure of diversity, and the Berger-Parker Index BPI as a measure of numerical dominance. Total number of dead parasites and BPI had a significant, negative effect on percent composition of DHA of eggs. Individuals with higher amounts of dead parasites 20 were predicted to drop below a 13 DHA composition threshold needed for hatching and larval success.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA00005174
Format
Document (PDF)
Effects of MsrA and MsrB During Anoxic Stress in Drosophila melanogaster
Title
Effects of MsrA and MsrB During Anoxic Stress in Drosophila melanogaster.
Creator
Suthakaran, Nirthieca, Binninger, David
Abstract/Description
Drosophila melanogaster can withstand hours of oxygen deprivation (anoxia) by entering a protective coma called spreading depression. When oxygen is reintroduced to the cells, a burst of reactive oxygen species (ROS) causes oxidative damage. Methionine is susceptible to oxidation to form methionine sulfoxide. This oxidation is reversible where methionine sulfoxide reductase (Msr) A and B reduce the S and R enantiomers, respectively. In this study, MsrA and MsrB single deletion lines were...
Show moreDrosophila melanogaster can withstand hours of oxygen deprivation (anoxia) by entering a protective coma called spreading depression. When oxygen is reintroduced to the cells, a burst of reactive oxygen species (ROS) causes oxidative damage. Methionine is susceptible to oxidation to form methionine sulfoxide. This oxidation is reversible where methionine sulfoxide reductase (Msr) A and B reduce the S and R enantiomers, respectively. In this study, MsrA and MsrB single deletion lines were exposed to one hour of anoxia and the Drosophila Activity Monitor (DAM) recorded their recovery times. RNA interference (RNAi) lines were used to mimic the effect of these deletion lines by ubiquitously knocking down their expression. My current data indicates that MsrA loss-of-function strains recover significantly faster than the MsrB loss-of-function lines with increasing age. Insight into the roles of Msr genes under anoxic stress could lead to a better understanding of how these genes contribute to aging.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA0005037
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Creative anachronism: paintings on history and authenticity
Title
Creative anachronism: paintings on history and authenticity.
Creator
Boehm, Megan, Broderick, Amy S.
Date Issued
2012-04-06
PURL
http://purl.flvc.org/fcla/dt/3348626
Subject Headings
Creative Anachronism, Paintings authenticity, Historical painting, Visual arts, Art history
Format
Document (PDF)
Using the general mental ability test scores as predictors of NFL QB performance
Title
Using the general mental ability test scores as predictors of NFL QB performance.
Creator
Metzger, Mike, Bernardin, Harold John
Date Issued
2013-04-05
PURL
http://purl.flvc.org/fcla/dt/3361155
Subject Headings
Quarterbacks (Football), Cognitive Abilities Test, National Football League
Format
Document (PDF)
International Court of Justice And Regional Bias
Title
International Court of Justice And Regional Bias.
Creator
Concepcion, Jessica, Morton, Jeffrey S., Dorothy F. Schmidt College of Arts and Letters
Abstract/Description
The International Court of Justice (ICJ) presides over the contentious issues, such as boundary disputes and military conflict, for all United Nation’s (UN) members. Its rulings, legally binding, guide international affairs between states by holding them accountable to international law. Previous studies have found that the judges on the ICJ display judicial bias. However, scholars have yet to evaluate whether judges are influenced by a regional association with a party in the cases. To...
Show moreThe International Court of Justice (ICJ) presides over the contentious issues, such as boundary disputes and military conflict, for all United Nation’s (UN) members. Its rulings, legally binding, guide international affairs between states by holding them accountable to international law. Previous studies have found that the judges on the ICJ display judicial bias. However, scholars have yet to evaluate whether judges are influenced by a regional association with a party in the cases. To evaluate the role of region in ICJ rulings, I developed a dataset containing: 1) nationality of judges in contentious cases, 2) states party to a case, 3) states’ regions, and 4) case subject. This data is then used to evaluate the relationship between ICJ judges, state region, and the outcome of case rulings in order to determine whether regional bias exist today within the UN.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005181
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Engineering a Self-Sustained Coral Reef Park with Renewable Energy
Title
Engineering a Self-Sustained Coral Reef Park with Renewable Energy.
Creator
Quiray, Paulane C., Mohamed, Antonio, Raja, Umar, Su, Tsung-Chow
Abstract/Description
FAU's Office of Undergraduate Research and Inquiry hosts an annual symposium where students engaged in undergraduate research may present their findings either through a poster presentation or an oral presentation.
Date Issued
2011
PURL
http://purl.flvc.org/fau/fd/FA00005446
Format
Document (PDF)
Abamectin: ant toxin or antifeedant?
Title
Abamectin: ant toxin or antifeedant?.
Creator
Kissner, William, Kaul, Christopher, McGuire, Megan, Pick, David, Dragojlovic, Veljko
Date Issued
2012-04-06
PURL
http://purl.flvc.org/fcla/dt/3348829
Subject Headings
Abamectin, Toxin, Antifeedant, Chemistry techniques, Pest control
Format
Document (PDF)
Bilingualism Characteristics in Second Generation Latin American Immigrants
Title
Bilingualism Characteristics in Second Generation Latin American Immigrants.
Creator
Ortega, Alexandra, Rosselli, Monica
Abstract/Description
This study examined the linguistic characteristics of a sample of second-generation Latin American immigrants and a control group of English monolinguals. Participants included both males and females from 18-40 years old. For all the bilingual participants L1 was Spanish but they had been schooled mostly in English (L2). The examined language domains included: grammatical and semantic judgment, vocabulary, reading, writing, and fluency of both L1 and L2. It was observed that L2 significantly...
Show moreThis study examined the linguistic characteristics of a sample of second-generation Latin American immigrants and a control group of English monolinguals. Participants included both males and females from 18-40 years old. For all the bilingual participants L1 was Spanish but they had been schooled mostly in English (L2). The examined language domains included: grammatical and semantic judgment, vocabulary, reading, writing, and fluency of both L1 and L2. It was observed that L2 significantly overwrote L1, becoming the dominant language. Grammatical judgment as well as reading and writing became more accurate, vocabulary was larger, and fluency was greater in English than in Spanish. Interference from English to Spanish in reading, writing and vocabulary was significant, whereas interference in the opposite direction was minimal. Two questions are discussed: the switch of the dominant language from L1 to L2 and the language profile in each one of the two languages.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA0005033
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Hippocampal involvement in object recognition memory
Title
Hippocampal involvement in object recognition memory.
Creator
Velez, Elisa M., Cohen, Sarah J., Stackman, Robert W.
Date Issued
2013-04-05
PURL
http://purl.flvc.org/fcla/dt/3361221
Subject Headings
Hippocampus (Brain), Spatial ability
Format
Document (PDF)
Electrochemical Process of Biorock for Carbon Dioxide Capture
Title
Electrochemical Process of Biorock for Carbon Dioxide Capture.
Creator
Harris, Alyssa, Freudenberg, Andrew, Lopez, Michael, Muslera, Pedro, Su, Tsung-Chow
Abstract/Description
The purpose of this study is to utilize information and data gathered from previous studies pertaining to the BioRock® method, patented by Dr. W. Hibertz and T.J. Goreau in 1974. Biorock® stimulates the growth of coral reefs utilizing natural reef processes and electrochemistry to remove CO2 from the atmosphere. Our aim is to make the process more efficient to achieve large scale atmospheric carbon dioxide sequestration. A pH sensor in the water and CO2 sensor is in place to quantify and...
Show moreThe purpose of this study is to utilize information and data gathered from previous studies pertaining to the BioRock® method, patented by Dr. W. Hibertz and T.J. Goreau in 1974. Biorock® stimulates the growth of coral reefs utilizing natural reef processes and electrochemistry to remove CO2 from the atmosphere. Our aim is to make the process more efficient to achieve large scale atmospheric carbon dioxide sequestration. A pH sensor in the water and CO2 sensor is in place to quantify and confirm the reduction of CO2 in the water and air above, all within a sealed tank. The first experiment in this study used an iron mesh with an electric current running through it to collect the limestone that serves as the base for a reef. However, the iron oxidized instead of collecting limestone. Future testing will utilize a lead plate as it is less susceptible to rusting.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA0005021
Subject Headings
College students --Research --United States.
Format
Document (PDF)
The War on Neologisms in the Italian Language
Title
The War on Neologisms in the Italian Language.
Creator
Baldocchi, Valeria, Ruthenberg, Myriam Swennen, Serra, Ilaria, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description
Globalization has become an agent of socioeconomic and communicative integration and today it envelops all aspects of human life. The quasi-immediate exchange of information that surpasses the now ancient barriers of time and space has triggered a sociocultural revolution with perceptible effects on the linguistic characteristics that are at the core of collective and individual identities. Among the most noticeable cultural changes are neologisms, which are often at the center of heated...
Show moreGlobalization has become an agent of socioeconomic and communicative integration and today it envelops all aspects of human life. The quasi-immediate exchange of information that surpasses the now ancient barriers of time and space has triggered a sociocultural revolution with perceptible effects on the linguistic characteristics that are at the core of collective and individual identities. Among the most noticeable cultural changes are neologisms, which are often at the center of heated linguistic debates. Some claim that the increased use of neologisms in the Italian language is a natural component of the fluctuating nature of a language and that their use enriches it. Linguistic purists take a more conservative stance and view neologisms as a linguistic enemy who blurs the distinctive differences among languages and robs them of their uniqueness. Neologisms are a mirror of contemporary Italian society and their use entails an often subconscious support of certain social currents.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005175
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Public History in the Digital Age
Title
Public History in the Digital Age.
Creator
Morse, Annaleah D., Norman, Sandra, Dorothy F. Schmidt College of Arts and Letters
Abstract/Description
As society is continuing to become digitally integrated, many museums and archives are facing difficulty appealing to newer generations, especially those that are raised on digital availability of resources. Beginning with an explanation of the history of museums, my thesis expands on the evolution of museums, focusing on the current digital climate. The current digital revolution is an exigent matter that museums and non-profits must respond to, and without proper financial assistance and...
Show moreAs society is continuing to become digitally integrated, many museums and archives are facing difficulty appealing to newer generations, especially those that are raised on digital availability of resources. Beginning with an explanation of the history of museums, my thesis expands on the evolution of museums, focusing on the current digital climate. The current digital revolution is an exigent matter that museums and non-profits must respond to, and without proper financial assistance and adaptation of new technologies, museums and non-profits cannot fully achieve digital integration. New technologies allow museums to appeal universally: rather than being available to only a specific community, digitization has allowed museums to dissipate information globally. Ultimately, the question for archives and museums has evolved from how to provide information to the public to how museums and other non-profit organizations can better adapt to the growing needs of the digital age and those within it.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00005204
Subject Headings
College students --Research --United States.
Format
Document (PDF)
Bulk diffusion of mature high performance concrete
Title
Bulk diffusion of mature high performance concrete.
Creator
Arias, Wendy J., Presuel-Moreno, Francisco
Date Issued
2013-04-05
PURL
http://purl.flvc.org/fcla/dt/3361064
Subject Headings
High performance concrete, High strength concrete, Bulk diffusion
Format
Document (PDF)
Preliminary Census of Free Ranging Vervet Monkeys, Chlorocebus sabaeus,in Dania Beach, Forida
Title
Preliminary Census of Free Ranging Vervet Monkeys, Chlorocebus sabaeus,in Dania Beach, Forida.
Creator
Williams, Deborah, Broemel, Erin T., Graduate College, Detwiler, Kate M.
Abstract/Description
Observations of vervet monkeys, Chlorocebus sabaeus, have been documented in 3700 hectares of mangrove preserves of Dania Beach, Florida since the 1950’s. A scientific census in 1995 provided confirmation of this population. Endemic to West Africa, research suggests this primate has adapted to the ecology of the mangrove environment in Southeast Florida. The 1995 census showed the population consisted of two groups with a total of 36 individuals. We resurveyed the population from January...
Show moreObservations of vervet monkeys, Chlorocebus sabaeus, have been documented in 3700 hectares of mangrove preserves of Dania Beach, Florida since the 1950’s. A scientific census in 1995 provided confirmation of this population. Endemic to West Africa, research suggests this primate has adapted to the ecology of the mangrove environment in Southeast Florida. The 1995 census showed the population consisted of two groups with a total of 36 individuals. We resurveyed the population from January-February 2014 by visiting sites where monkeys have been reported either in the media or by local residents. We found the vervets inhabit two geographically isolated areas, separated by a man-made waterway. The population is divided into three groups with a total of 18 individuals. Group A, which occupies the northern most part of the mangroves consists of 3 adult males, 1 juvenile male, 5 adult females, and 1 infant. Group B, which occupies the central part of the mangroves consists of 1 adult male, 2 adult females, 1 sub-adult female, and 2 juveniles. Group C, which occupies the southern part of the mangroves consists of 2 adult females. In the 1995 study, this southern group ranged in size from 19-23 individuals. Our results indicate the total population decreased significantly in size over the past 19 years. To confirm this population decrease, research will expand surveys into unexplored areas of the mangrove preserve to document the presence or absence of additional groups. Ongoing research will investigate day ranges, behavior, and feeding ecology of this feral primate population.
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Date Issued
2014
PURL
http://purl.flvc.org/fau/fd/FA00005172
Format
Document (PDF)

Pages