Digital Commons Network^™

Cyberterrorists: Their Communicative Messages And The Effect On Targets, Elizabeth Minei

Electronic Theses and Dissertations

This qualitative study provides a semiotic perspective on cyberterrorism and its opportunity to cause maximal damage while using terrorist propaganda. The very definition of cyberterrorism refers to Internet use, technology, and computer-based networks against critical infrastructures. The application of Stamper's Semiotic Ladder - morphological, empirical, syntactical, semantic, pragmatic and social world - to the various methods of propaganda utilized by cyberterrorists will uncover aspects on the transition from traditional to modern methods of attack, cyberterrorist communication, and the recruitment of new members to their cause. Additionally, this research focused on the role of the media in the equation of planning …

Retrocyclin, A Potent Hiv-1 Entry Inhibitor, Nitya Venkataraman

Electronic Theses and Dissertations

Human immununodeficiency virus (HIV) infection is the leading cause of death due to viral infections worldwide. In the absence of an effective vaccine or consistent male condom use, there is a clear need for female-controlled preventatives such as topical vaginal microbicides. Recent attention has been focused on developing natural antimicrobial peptides, as anti-retroviral microbicides. Increasing evidence suggests that cationic antimicrobial peptides such as defensins are effective HIV-1 inhibitors. Human alpha- and beta-defensins contribute substantially to innate immune defenses against microbial and viral infections. Certain nonhuman primates also produce theta-defensins – 18 residue cyclic peptides that are potent HIV-1 entry inhibitors. …

Gold Nanoparticles: Synthesis, Property Study And Applcications For Biomolecular Detection And Photothermal Therapy, Xiong Liu

Electronic Theses and Dissertations

This dissertation presents a systematic study on gold nanoparticles: from their chemical synthesis, modification of surface functionalities, optical properties studies with emphasis on the absorption and scattering properties, to applications of gold nanoparticles in biomolecular detection, imaging and photothermal therapy. In chapter 2, we studied the kinetics of gold nanoparticle growth under Brust-Shiffrin reaction conditions. In chapter 3, we further examined the reaction mechanism and growth kinetics of gold nanoparticles using oleylamine as both a reducing reagent and particle growth passivation ligand. From these two projects, important understanding was revealed on gold nanoparticle formation and growth mechanism. Chapter 4 describes …

Bacterial Selenoproteins: A Role In Pathogenesis And Targets For Antimicrobial Development, Sarah Rosario

Electronic Theses and Dissertations

Selenoproteins are unique proteins in which selenocysteine is inserted into the polypeptide chain by highly specialized translational machinery. They exist within all three kingdoms of life. The functions of these proteins in biology are still being defined. In particular, the importance of selenoproteins in pathogenic microorganisms has received little attention. We first established that a nosocomial pathogen, Clostridium difficile, utilizes a selenoenzyme dependent pathway for energy metabolism. Following this initial characterization, we demonstrate that this pathway is linked to production of toxins by this organism. Finally, we show that interruption of selenium metabolism is a viable pathway for development of …

The Effects Of Computer-Assisted Repeated Readings On The Reading Performance Of Middle School Students With Mild Intellectual Disabilities, Mark Cerasale

Electronic Theses and Dissertations

The No Child Left Behind Act of 2001 has mandated that all public school students will be reading at grade level by the 2013-2014 school year. Florida has embarked on an agenda to ensure that the kindergarten through high school student population is reading at or above grade level by 2014. Many of Florida's low-performing student population, including middle school students with high incidence disabilities, are reading below grade level. Using a multiple baseline across subjects design, this study examined the impact of computer-assisted repeated readings on the reading performance of three middle school students with mild intellectual disabilities over …

Examining The General Quality Of Early Childhood Education And Structural Variables In Support Of Early Childhood Inclusion In Beijing, China, Bi Ying Hu

Electronic Theses and Dissertations

The primary purpose of this study was to (a) explore the global quality of early childhood programs within the Chinese socio-cultural context, and (b) examine the effects of teachers' years of experience, degree, major, and class size on teachers' perceptions of developmentally appropriate practices, inclusion, and training needs in order to provide services for children with disabilities in regular classrooms. The researcher completed observations in 40 early childhood classrooms using the Early Childhood Environment Rating Scale- Revised (ECERS-R). Results from classroom observations revealed that the global quality of the early childhood learning environment was between minimum and good. Areas that …

The Impact Of Teacher-Student Interaction On Student Motivation And Achievement, Tisome Nugent

Electronic Theses and Dissertations

The goal of this research was to determine the value and impact of student-teacher interactions in relation to student motivation and achievement. It was further intended that the results of this study would add to the body of knowledge and resources available to enhance the learning experience and influence student success. In order for this to happen, student and teacher perceptions of their interactions were analyzed, as well whether or not this interaction significantly impacted motivation and achievement. The results of this study provided strong arguments in favor of equipping teachers with the appropriate resources and assistance to appropriately meet …

Self-Determination Among Community College Students Diagnosed With Asperger's Syndrome: A Qualitative Study, Jillian Szentmiklosi

Electronic Theses and Dissertations

This qualitative research study investigated the self-determination of community college students diagnosed with Asperger's syndrome (AS). Varying levels of self-determination were displayed within each of the five participants. However, despite the unique characteristics and experiences of the participants, five major and two minor themes related to the collegial experiences of these students were revealed. The major themes highlighted were that community college students with AS (a) enjoyed academic success, (b) found disability services and accommodations important, (c) chose majors based on personal interests, (d) relied on family members for support, and (e) had difficulty developing social connections on campus. The …

A Preliminary Study Of A Non-Invasive Glucose Sensor Based On A Mercury Sensor, Erin Wood

Electronic Theses and Dissertations

Diabetes mellitus is a potentially lethal disease that affects 7.6 percent of American people. In the US, it is recognized as the 6th leading cause of death. Failure to control blood glucose levels (BGL) in patients with either type of diabetes can lead to other serious complications as well, such as loss of limb, blindness and other health problems. Controlling and monitoring the BGL in post-op and intensive care patients in the hospital is also vital to their health. Currently the most reliable method of monitoring BGL is through an invasive procedure which monitors the amount of glucose in blood …

An Architecture For High-Performance Privacy-Preserving And Distributed Data Mining, James Secretan

Electronic Theses and Dissertations

This dissertation discusses the development of an architecture and associated techniques to support Privacy Preserving and Distributed Data Mining. The field of Distributed Data Mining (DDM) attempts to solve the challenges inherent in coordinating data mining tasks with databases that are geographically distributed, through the application of parallel algorithms and grid computing concepts. The closely related field of Privacy Preserving Data Mining (PPDM) adds the dimension of privacy to the problem, trying to find ways that organizations can collaborate to mine their databases collectively, while at the same time preserving the privacy of their records. Developing data mining algorithms for …

Determining Emissions From Landfills And Creating Odor Buffer Distances, Nicholas Guarrieloo

Electronic Theses and Dissertations

With population growing every year, more and more people are looking for places to live. This can lead to construction of houses near and around landfills. As homes get closer to landfills, the odors these landfills produce become more of a problem, and lead to an increase in odor complaints. Modeling these odors and recommending odor buffer distances will help determine limits on how close to landfills new homes should be allowed. This should help reduce future odor complaints. To solve this problem one must accurately estimate odorous gas emissions from the landfill. Often odors can be indicated by methane …

Analyses Of Crash Occurence And Injury Severities On Multi Lane Highways Using Machine Learning Algorithms, Abhishek Das

Electronic Theses and Dissertations

Reduction of crash occurrence on the various roadway locations (mid-block segments; signalized intersections; un-signalized intersections) and the mitigation of injury severity in the event of a crash are the major concerns of transportation safety engineers. Multi lane arterial roadways (excluding freeways and expressways) account for forty-three percent of fatal crashes in the state of Florida. Significant contributing causes fall under the broad categories of aggressive driver behavior; adverse weather and environmental conditions; and roadway geometric and traffic factors. The objective of this research was the implementation of innovative, state-of-the-art analytical methods to identify the contributing factors for crashes and injury …

Sintering Additives For Nanocrystalline Titania And Processing Of Porous Bone Tissue Engineering Scaffolds, Arun Menon

Electronic Theses and Dissertations

Titania (Titanium dioxide, TiO2) has been researched as a promising biomaterial due to its excellent biocompatibility. However, the main limitation of titania is its poor mechanical properties which limit its use in many load-bearing applications. In this thesis report, the properties of titania were improved by doping with small quantities of MgO, ZnO and SiO2 as sintering additives. Nanocrystalline powder was selected, as it possesses outstanding properties over conventional coarse-grained powders due to reduced grain size. Nanocrystalline anatase powder of size 5-15 nm was synthesized via a simple sol-gel technique. Small quantities of dopants were introduced into pure titania powder, …

Occupational Lower Extremity Risk Assessment Modeling, Christopher Reid

Electronic Theses and Dissertations

Introduction: Lower extremity (LE) work-related musculoskeletal disorders (WMSDs) are known to occur with cumulative exposure to occupational and personal risks. The objective of this dissertation study was to find if creating a quantifiable risk detection model for the LE was feasible. The primary product of the literature review conducted for this study resulted in focusing the attention of the model development process onto creating the initial model of the LE for assessing knee disorder risk factors. Literature Review: LE occupational disorders affect numerous industries and thousands of people each year by affecting any one of the musculoskeletal systems deemed susceptible …

Structural Health Monitoring With Emphasis On Computer Vision, Damage Indices, And Statistical Analysis, Ricardo Zaurin

Electronic Theses and Dissertations

Structural Health Monitoring (SHM) is the sensing and analysis of a structure to detect abnormal behavior, damage and deterioration during regular operations as well as under extreme loadings. SHM is designed to provide objective information for decision-making on safety and serviceability. This research focuses on the SHM of bridges by developing and integrating novel methods and techniques using sensor networks, computer vision, modeling for damage indices and statistical approaches. Effective use of traffic video synchronized with sensor measurements for decision-making is demonstrated. First, some of the computer vision methods and how they can be used for bridge monitoring are presented …

A Study Of Central Florida Nonroad Voc And Nos Emissions And Potential Actions To Reduce Emissions, Michael Radford

Electronic Theses and Dissertations

Ground-level ozone is harmful to the human respiratory system, as well as the environment. The national EPA 8-hour ozone standard for ground-level ozone was reduced from 85 parts per billion (ppb) to 75 ppb in 2008, and trends from previous years show that some of the counties in Central Florida could be in danger of violation. Violation means "non attainment" status; in which the county is ordered by EPA to develop specific implementation plans to reduce its emissions. The objective of this study was to compile an emissions inventory of volatile organic compounds (VOCs) and nitrogen oxides (NOx) from nonroad …

A Comparison Of Traditional Resistance Training Versus Complex Training In The Lower Limbs Of College Aged Males, Christopher John Macdonald

Electronic Theses and Dissertations

No abstract provided.

Mitigating Risk For Anxiety Among Preschool-Age Children Living In Poverty: Evaluating The Impact Of Adult-Provided Social Support On Autonomic Stress Reactivity, Brian Cory Wolff

Electronic Theses and Dissertations

Poverty increases children's exposure to stress, elevating their risk for developing patterns of heightened sympathetic and parasympathetic stress reactivity. Repeated patterns of high sympathetic activation and parasympathetic withdrawal place children at risk for anxiety disorders. This study evaluated whether providing social support to preschool-age children during mildly stressful situations helps reduce reactivity, and whether this effect partly depends on children's previously assessed baseline reactivity patterns. The Biological Sensitivity to Context (BSC) theory proposes that highly reactive children may be more sensitive than less reactive children to all environmental influences, including social support. In contrast, conventional physiological reactivity (CPR) theory contends …

A Hermeneutic Exploration Of The Literature Of Technology: Prometheus Bound, Frankenstein And Battlestar Galactica, William Blais

Electronic Theses and Dissertations

There are few phenomena in contemporary culture that are more dynamic and impactful than technology. That said the understanding of technology held by most therapists is overly simple or, at best, based on one-dimensional critiques of technological life. The present study endeavors to build a broader understanding of technology that allows for both a robust critique and a more accepting recognition of its potential contributions. The present study explores the archetypally invariant structure of technology as well as the more culturally and historically contingent elements of several of its historically specific expressions. It engages this material through a series of …

The Impact Of Early Childhood Education Upon The Black-White Achievement Gap, Linda Zane

Electronic Theses and Dissertations

It can be argued that the current Black-White achievement gap provides evidence for a long-standing history of racial inequity within American society, as well as an informative barometer of progress toward educational parity. By all accounts, the measurements registered by this barometer continue to be cause for alarm. The disturbing Black-White achievement gap has been shown to be present in both mathematics and reading at every grade studied, from grades one through twelve (Jacobson, Olsen, Rice, Sweetland, & Ralph, 2001).

Many solutions have been put forth in an effort to reduce or eliminate this gap, but the findings of this …

Rethinking Death And Donation: Mediating Death At The End Of Life In The Wake Of Brain Death's Failings, David Scott Henderson

Electronic Theses and Dissertations

Since its inception in 1968, death by whole-brain criteria, or simply brain death, has enjoyed the status of one of the relatively "well settled" issues in bioethics. Indeed, its almost universal acceptance in law and medical practice seems to confirm this depiction. However, over the last fifteen years or so, a growing number of experts in medicine, philosophy, and religion regard brain death as an untenable criterion for human death. Given that the debate about brain death has occupied a relatively small group of professionals, few are aware that brain death fails to correspond to any coherent biological or philosophical …

Molecular- Targeted Bioactive Natural Products, Hong Jia

Electronic Theses and Dissertations

No abstract provided.

Transitions In The Mental Health Field's System Of Professions From Wwii Until The Present: The Case Of Dubville, Daniel Noam Warner

Electronic Theses and Dissertations

A case study of one mental health field in a medium-sized, steel-belt city over a 50 year period is presented. Through interviews and archive data, the narrative elucidates the transitions that occurred in regards to which professions are dominant, and which services count as mental health services, in different eras and under different science and governmental regimes. The dissertation focuses on four professional categories in particular: psychoanalytic psychiatrists, neurological psychiatrists, research psychologists, and clinical psychologists. It also focuses, primarily, on three institutions: a large psychiatric research hospital, a university psychology department, and a psychoanalytic institute. Through tracing the dynamics of …

Geospatial Analysis Of Satellite Imagery For Mapping Road Inventory And Traffic Flow Attributes, Afzal Ahmed

Electronic Theses and Dissertations

No abstract provided.

Energy Absorption Characteristics Of Mwcnt, Swasti Gupta

Electronic Theses and Dissertations

No abstract provided.

Medical Malpractice And The Political Environment : Explaining Variation In Medical Malpractice Awards Among The States, Christopher Nicklaus Bailey

Electronic Theses and Dissertations

No abstract provided.

Assessment Of The Tissue Distribution Of A Novel Binding Site For Angiotensins Ii And Iii In The Mouse, Felicia Rabey

Electronic Theses and Dissertations

No abstract provided.

Damage Detection Investigation In Steel Beams And Towers / By Ling-Yu Su, Ling-Yu Su

Electronic Theses and Dissertations

No abstract provided.

Clients' Experience Of Effective Psychoanalytic-Psychodynamic Psychotherapy For Major Depression: An Empirical Phenomenological Study, Thomas Smith

Electronic Theses and Dissertations

Although there is sufficient evidence that psychodynamic therapy for depression is effective, there is no research documenting the qualities of experience in effective psychodynamic therapy for depression. To address this lack, this study aimed to investigate clients' experiences of both the helpful processes and the therapeutic effects of psychodynamic therapy for depression.

Letters, emails, and flyers were distributed and advertisements placed through psychological associations at the local and state level, and letters were mailed to therapists in the greater Pittsburgh metropolitan area. Solicitation procedures yielded four participants of whom three were female and one was male. Participants completed a research …

Understanding A Woman's Moral Obligation To Her Fetus: Maternal-Fetal Conflict As A Covenant Relationship, Marianne Burda

Electronic Theses and Dissertations

Maternal-fetal conflict refers to a perceived incompatibility between the interests of a pregnant woman and her fetus. Maternal-fetal conflict occurs when a pregnant woman declines a medical treatment or procedure that her physician believes is necessary to benefit her fetus. In some situations, the pregnant woman's health is also at risk. The question explored in this dissertation is: what is the pregnant woman's moral obligation to her fetus when a cesarean section is recommended to save the life of or to prevent serious harm to her term viable fetus? The pregnant woman's life is not endangered.

Inconsistencies exist between normative …