Digital Commons Network^™

Advanced Studies On Series Impedance In Waveguides With An Emphasis On Source And Transfer Impedance, Jinghao Liu

University of Kentucky Doctoral Dissertations

Series impedances, including source and transfer impedances, are commonly used to model a variety of noise sources and noise treatment elements in duct systems. Particle velocity is assumed to be constant on the plane where the series impedances are defined. The research reported herein details investigations into measuring source and transfer impedance. Especially, the measurement and prediction of the transfer impedance of micro-perforated panel (MPP) absorbers is considered.

A wave decomposition method for measuring source impedance and source strength was developed that was purely based on acoustic concepts instead of the equivalent circuit analysis. The method developed is a two-load …

Identification Of Activities Involved In Cag/Ctg Repeat Instability, Nelson Lap Shun Chan

University of Kentucky Doctoral Dissertations

CAG/CTG repeat instability is associated with at least 14 neurological disorders, including Huntington’s disease and Myotonic dystrophy type 1. In vitro and in vivo studies have showed that CAG/CTG repeats form a stable hairpin that is believed to be the intermediate for repeat expansion and contraction.

Addition of extra DNA is essential for repeat expansion, so DNA synthesis is one of the keys for repeat expansion. In vivo studies reveal that 3’ CTG slippage with subsequent hairpin formation (henceforth called the 3’ CTG slippage hairpin) occurs during DNA synthesis. It is proposed that hairpin tolerance machinery is activated because prolonged …

Three Dimensional Modeling And Animation Of Facial Expressions, Alice J. Lin

University of Kentucky Doctoral Dissertations

Facial expression and animation are important aspects of the 3D environment featuring human characters. These animations are frequently used in many kinds of applications and there have been many efforts to increase the realism. Three aspects are still stimulating active research: the detailed subtle facial expressions, the process of rigging a face, and the transfer of an expression from one person to another. This dissertation focuses on the above three aspects.

A system for freely designing and creating detailed, dynamic, and animated facial expressions is developed. The presented pattern functions produce detailed and animated facial expressions. The system produces realistic …

Role Of Lipids In Tombusvirus Replication, Monika Sharma

University of Kentucky Doctoral Dissertations

Positive-strand RNA virus group are the most abundant among viruses affecting plants and animals. To successfully achieve replication, these viruses usurp or co-opt host proteins. To facilitate the discovery of host factors involved in Tomato bushy stunt virus (TBSV), yeast has been developed as a surrogate model host. Genome-wide approaches covering 95% of yeast genes, has revealed approximately hundred factors that could affect virus replication. Among the identified host factors, there are fourteen yeast genes, which affect/regulate lipid metabolism of the host.

One of the identified host gene is ERG25, which is an important factor for sterol biosynthesis pathway, affecting …

Appalachian Bridges To The Baccalaureate: Mattering Perceptions And Transfer Persistence Of Low-Income, First-Generation Community College Students, Michelle Dykes

University of Kentucky Doctoral Dissertations

Too few community college students who intend to transfer and earn a baccalaureate degree actually do. Further, low-income and first-generation college students are overrepresented at community colleges. Education is considered a means of social and economic mobility for low-income, first-generation students; therefore, retaining this population through baccalaureate attainment is a critical issue. Because of the multitude of obstacles these students must conquer, it is crucial to implement effective strategies for improving transfer rates.

This dissertation has three components: (1) companion research study, (2) individual research study, and (3) reflective essay examining pretesting and telephone-administered survey methods. The companion study was …

The Role Of The Acidic Domain Of The Toc159 Protein Import Receptor Family In Toc Complex Assembly In Arabidopsis Thaliana, Yi Chen

Theses and Dissertations (Comprehensive)

Most chloroplast proteins are encoded in the nucleus and translated in the cytosol with an N-terminal cleavable transit peptide, which can be recognized by the translocon at the outer envelope membrane of chloroplasts (Toc complex). The core Toc complex is composed of two GTPases, Toc159 and Toc34, and the Toc75 channel. atToc159, atToc132 and atToc120 are homologues of the Toc159 family in Arabidopsis, and have been shown to assemble into structurally and functionally distinct Toc complexes. Targeting of atToc159 to the chloroplast outer membrane is mediated by its GTPase (G-) domain. However, the role of the acidic (A-) domain in …

A Qualitative Study Of The Involvement Of Parents In Career Decisions Of Millennial Participants In Corporate Rotational Programs, Tommy Moreno

Doctoral Dissertations

unavailable

Four Varieties Of Social Responsibility: Making Sense Of The 'Sphere Of Influence' And 'Leverage' Debate Via The Case Of Iso 26000, Stepan Wood

All Faculty Publications

One of the key controversies in social responsibility discourse is whether an organization’s responsibility should be based on its capacity to influence other parties or only on its actual contribution to social and environmental outcomes. On one side of the debate are those who argue that the limits of an organization’s responsibility should be defined in terms of its “sphere of influence” (SOI): the greater the influence, the greater the responsibility to act. On the other side are those who reject the SOI approach as ambiguous, misleading, normatively undesirable and prone to strategic manipulation. Foremost among the critics is the …

Hybrid Inorganic/Organic Nanostructured Tandem Solar Cells: Simulation And Fabrication Methods, Patrick Michael Boland Jr.

Electrical & Computer Engineering Theses & Dissertations

Organic solar cell technologies continue to be an extremely active area of scientific research. With their promise of providing low-cost, easily-processable, multi-application photovoltaics, these devices could very possibly be the most viable and practical form of renewable energy among many being explored. However, significant technological obstacles remain that must be overcome if this technology is to successfully realize the goal of providing abundant energy while simultaneously reducing dependence on fossil fuel-based sources. Compared with inorganic solar photovoltaics, power conversion efficiencies in organics are still too low to compete economically.

Much research has been accomplished over the past three decades in …

Introduction: Changing Dimensions Of The Canada-China Relations, Pitman B. Potter, Thomas Adams

All Faculty Publications

Bilateral relations with the People’s Republic of China involve matters of great strategic interest to Canada. Recent changes in the frequency of high level visits; the effect, style and content of bilateral communications; and perspectives held by various sectors in each country about the other all suggest that the Canada-China relationship has changed significantly in recent years. China remains vitally important to Canada for a variety of reasons and in a variety of sectors. Political and diplomatic cooperation on issues of direct bilateral concern and also on issues of global import remains critically important. Commercial and trade ties linking Canada …

Prudential, Pragmatic And Prescient, Reform Of Bank Resolution Schemes, Janis P. Sarra

All Faculty Publications

The 2008-2009 global financial crisis highlighted the interdependency of financial institutions and markets worldwide. Globally, fiscal support packages totaling 3 trillion USD were introduced, placing enormous strain on the public finances of a number of countries. Even in jurisdictions such as Canada, with relatively well-managed banking systems, a generalized loss of confidence led to a sharp rise in funding costs. The largest negative effects of the financial crisis on the Canadian economy stemmed from crises originating in other countries, with adverse contagion effects on the Canadian banking system, making it very difficult for Canadian banks to fund themselves in foreign …

Context, Choice, And Rights: Phs Community Services Society V. Canada (Attorney General), Margot Young

All Faculty Publications

Constitutional law cases that revolve around the rights or circumstances of those groups most marginalized in Canadian society are not frequent cause for celebration. Typically, these cases push the boundaries of classical liberal understandings of the rights our Canadian Charter of Rights and Freedoms protects, asking the courts to recognize social and economic dimensions to liberties that are traditionally and popularly more narrowly construed. Such demands are more often than not sidestepped (or rejected outright) by courts, with the result that activist agendas focusing on leveraging Charter rights to achieve significant social change are less compelling than initially imagined. It …

Digitizing Deliberation: Normative Concerns For The Use Of Social Media In Deliberative Democracy, Nicole M. Elias

Publications and Research

Deliberative democracy as a form of citizen engagement and social media as a means to achieving greater citizen engagement have both received considerable attention in recent years; however, little attention has been paid to the way deliberative democracy and social media function together. The central aim of this research is to highlight the normative considerations surrounding social media in a deliberative democratic process. To do this, the article uses Iris Marion Young's model of deliberative democracy that is rooted in inclusion, political equality, reasonableness, and publicity. Applying this model's normative values to the use of audience response systems demonstrates that …

Risk Clusters, Hotspots, And Spatial Intelligence: Risk Terrain Modeling As An Algorithm For Police Resource Allocation Strategies, Leslie W. Kennedy, Joel M. Caplan, Eric L. Piza

Publications and Research

The study reported here follows the suggestion by Caplan et al. (Justice Q, 2010) that risk terrain modeling (RTM) be developed by doing more work to elaborate, operationalize, and test variables that would provide added value to its application in police operations. Building on the ideas presented by Caplan et al., we address three important issues related to RTM that sets it apart from current approaches to spatial crime analysis. First, we address the selection criteria used in determining which risk layers to include in risk terrain models. Second, we compare the ‘‘best model’’ risk terrain derived from our analysis …

Terrorism: A Guide To Resources, Karen Okamoto, Marta Bladek

Publications and Research

Prior to 9/11, terrorism was subject to political, scholarly, and media debates. A large body of literature on the topic reflected researchers’ long-standing interest in the topic. In the near decade since 9/11, terrorism and its threat have only gained urgency. This paper aims to provide a selected bibliography of resources, in print and electronic format, that focus on terrorism. Public and academic libraries have been providing access to terrorism-related resources, but no thematic bibliography has been published in professional journals since 2001. This guide aims to aid librarians in making decisions about developing and maintaining collections on the topic.

Application Of Stochastic Diffusion For Hiding High Fidelity Encrypted Images, Jonathan Blackledge, Abdulrahman Al-Rawi

Articles

Cryptography coupled with information hiding has received increased attention in recent years and has become a major research theme because of the importance of protecting encrypted information in any Electronic Data Interchange system in a way that is both discrete and covert. One of the essential limitations in any cryptography system is that the encrypted data provides an indication on its importance which arouses suspicion and makes it vulnerable to attack. Information hiding of Steganography provides a potential solution to this issue by making the data imperceptible, the security of the hidden information being a threat only if its existence …

Risk Management Trends: Currency Trading Using The Fractal Market Hypothesis, Jonathan Blackledge, Kieran Murphy

Articles

We report on a research and development programme in financial modelling and economic security undertaken in the Information and Communications Security Research Group (ICSRG, 2011) which has led to the launch of a new company - Currency Traders Ireland Limited - funded by Enterprise Ireland. Currency Traders Ireland Limited (CTI, 2011) has a fifty year exclusive license to develop a new set of indicators for analysing currency exchange rates (Forex trading). We consider the background to the approach taken and present examples of the results obtained to date. In this ‘Introduction’, we provide a background to and brief overview of …

Using Virtual Reality To Enhance Electrical Safety And Design In The Built Environment, Martin Barrett, Jonathan Blackledge, Eugene Coyle

Articles

— Electricity and the inherent risks associated with its use in the built environment have long since been a priority for the electrical services industry and also the general public who must live and work in this environment. By its nature virtual reality has the advantage of being safe for both the user and equipment. In addition, it offers the user an opportunity to be exposed to a range of scenarios and conditions that either occur infrequently or are hazardous to replicate. This paper presents a prototype desktop virtual reality model, to enhance electrical safety and design in the built …

Radicalization And The Use Of Social Media, Robin L. Thompson

Journal of Strategic Security

The use of social media tools by individuals and organizations to radicalize individuals for political and social change has become increasingly popular as the Internet penetrates more of the world and mobile computing devices are more accessible. To establish a construct for radicalization,the power and reach of social media will be described so there is common understanding of what social media is and how it is utilized by various individuals and groups. The second section will answer the question of why social media applications are the perfect platform for the radical voice. Finally, the use of social media and its …

Radicalization Into Violent Extremism Ii: A Review Of Conceptual Models And Empirical Research, Randy Borum

Journal of Strategic Security

Over the past decade, analysts have proposed several frameworks to explain the process of radicalization into violent extremism (RVE). These frameworks are based primarily on rational, conceptual models which are neither guided by theory nor derived from systematic research. This article reviews recent (post-9/11) conceptual models of the radicalization process and recent (post-9/11) empirical studies of RVE. It emphasizes the importance of distinguishing between ideological radicalization and terrorism involvement, though both issues deserve further empirical inquiry.Finally, it summarizes some recent RVE-related research efforts, identifies seven things that social science researchers and operational personnel still need to know about violent radicalization, …

Cover & Front Matter

Journal of Strategic Security

No abstract provided.

Radical Islamism And Migrant Integration In Denmark: An Empirical Inquiry, Marco Goli, Shahamak Rezaei

Journal of Strategic Security

It has been suggested that alienation and failed integration may be causes of "Homegrown Radical Islamism" in Western societies. Western countries often expect that migrants and their descendants residing there as citizens will embrace or support common democratic ideals as a predicate for—or consequence of—their societal integration. Conventional wisdom suggests: "The more you associate yourself with the cherished and established goals and means, the more you will disassociate yourself from Radical Islamism," and vice versa. We believe that, quite surprisingly, an empirical test of this idea is lacking. Based on a nationally representative sample of 1,113 youth (ages 15–30) in …

Four Lessons From The Study Of Fundamentalism And Psychology Of Religion, Sara Savage

Journal of Strategic Security

What lessons can the study of fundamentalism and the psychology of religion teach the newer field of Radicalization and Involvement in Violent Extremism (RIVE)? Four lessons and an intervention are offered in this article: (1) Religion is a robust human experience and cultural product that adopts a defensive shape when its worldview is threatened. (2) This does not mean that all "fundamentalisms" or radical versions of religion are somehow linked or perform similar functions; rather, they reflect the limited human repertoire to threat, yet within different cultural and historical contexts. (3) Causal explanations on the level of the individual are …

Gangs, Terrorism, And Radicalization, Scott Decker, David Pyrooz

Journal of Strategic Security

What can street gangs tell us about radicalization and extremist groups? At first glance, these two groups seem to push the boundaries of comparison. In this article, we examine the important similarities and differences across criminal, deviant, and extremist groups. Drawing from research on street gangs, this article explores issues such as levels of explanation,organizational structure, group process, and the increasingly important role of technology and the Internet in the context of radicalization. There are points of convergence across these groups, but it is important to understand the differences between these groups. This review finds little evidence to support the …

Evaluating Ict Adoption In Rural Brazil: A Quantitative Analysis Of Telecenters As Agents Of Social Change, Paola Prado, Mauro Araújo Câmara, Marco Aurélio De Figueiredo

Arts & Sciences Faculty Publications

This quantitative study surveyed 538 adults in isolated rural settings in the state of Minas Gerais, Brazil, to examine whether telecenters operated by the non-profit organization Gems of the Earth improve digital literacy and promote social change. Using multivariate logistic regression, the study examined how individuals use information and communication technologies (ICTs) at the telecenter, and tested for predictors of their use. The findings confirm that these rural communities use ICTs for entertainment, to engage in civic participation, and to practice professional skills. The findings suggest that digital inclusion impacts these isolated communities by creating opportunities that may foster human …

The Jackprot Simulation Couples Mutation Rate With Natural Selection To Illustrate How Protein Evolution Is Not Random, Guillermo Paz-Y-Miño C, Avelina Espinosa, Chunyan Bai

Arts & Sciences Faculty Publications

Protein evolution is not a random process. Views which attribute randomness to molecular change, deleterious nature to single-gene mutations, insufficient geological time, or population size for molecular improvements to occur, or invoke “design creationism” to account for complexity in molecular structures and biological processes, are unfounded. Scientific evidence suggests that natural selection tinkers with molecular improvements by retaining adaptive peptide sequence. We used slot-machine probabilities and ion channels to show biological directionality on molecular change. Because ion channels reside in the lipid bilayer of cell membranes, their residue location must be in balance with the membrane’s hydrophobic/philic nature; a selective …

On The Theory Of Evolution Versus The Concept Of Evolution: Three Observations, Guillermo Paz-Y-Miño C, Avelina Espinosa

Arts & Sciences Faculty Publications

Here we address three misconceptions stated by Rice et al. in their observations of our article Paz-y-Miño and Espinosa (Evo Edu Outreach 2:655–675, 2009), published in this journal. The five authors titled their note “The Theory of Evolution is Not an Explanation for the Origin of Life.” First, we argue that it is fallacious to believe that because the formulation of the theory of evolution, as conceived in the 1800s, did not include an explanation for the origin of life, nor of the universe, the concept of evolution would not allow us to hypothesize the possible beginnings of …

You Can’T Go To Zion With A Carnal Mind: Slackness And Culture In The Music Of Yellowman, Brent Hagerman

Theses and Dissertations (Comprehensive)

Jamaican deejay Yellowman is best known for “slackness” lyrics centred on masculine heterosexual potency, sexist objectification of women and graphic sexual narratives. Yet a deeper look at Yellowman’s life and recorded output suggests that when his slackness is read in the context of Afro-Jamaican culture, reggae history and his Rastafarian faith, a more complex interpretation of his slackness is needed. This study will draw on Carolyn Cooper’s (2001) theory that slackness is a “metaphorical revolt against law and order, an undermining of consensual standards of decency” (p. 141). Whereas the term “culture” is used in reggae to depict music that …

To Tell Or Not To Tell: Predictors Of Disclosure And Privacy Settings Usage In An Online Social Networking Site (Facebook), Amanda Nosko

Theses and Dissertations (Comprehensive)

Use of social networking sites has grown exponentially over the last decade. Facebook, a popular social networking site, currently boasts membership of over 500 million users (www.facebook.com). In the present research, four studies were conducted to examine factors that impact on self-disclosure and privacy settings use. The primary goal for Studies 1 A, B and C involved developing methods for organizing and understanding the information that individuals disclose through social networking sites. Specifically, in Study 1 A, a scoring tool was developed in order to comprehensively assess the content of the personal profiles. In Study 1 B, grouping categories (default/standard …

The Internalization Of Mathematics Stereotypes In Elementary School Children, Amanda Schell

Theses and Dissertations (Comprehensive)

This study investigated mathematics-related gender stereotypes, internalization of these stereotypes in 2nd and 5th grade children, and whether there is a relationship between internalization and the underperformance of girls in mathematics. There is evidence that gender stereotype internalization occurs throughout elementary school with an increasing impact on girls’ mathematical competence and performance (e.g., Muzzatti & Agnoli, 2007). However, there has been no definite determination with respect to the point at which this process begins. Parents and teachers have displayed gender stereotypical beliefs concerning children as young as three years of age (Lee & Schell, under review). This factor can influence …