Digital Commons Network^™

Cad Tools For Synthesis Of Sleep Convention Logic, Parviz Palangpour

Graduate Theses and Dissertations

This dissertation proposes an automated flow for the Sleep Convention Logic (SCL) asynchronous design style. The proposed flow synthesizes synchronous RTL into an SCL netlist. The flow utilizes commercial design tools, while supplementing missing functionality using custom tools. A method for determining the performance bottleneck in an SCL design is proposed. A constraint-driven method to increase the performance of linear SCL pipelines is proposed. Several enhancements to SCL are proposed, including techniques to reduce the number of registers and total sleep capacitance in an SCL design.

"An Ample Provision For Our Posterity": Transportation, Ceramic Diversity, And Trade In Historic Arkansas, 1800-1930, Katherine Rose Cleek

Graduate Theses and Dissertations

In this dissertation I present a method to study transportation using ceramic diversity and access to transportation infrastructure. Ceramic tableware richness, or the number of types present, is analyzed over time as a proxy for access to local transportation infrastructure at seven sites in Arkansas, dating from approximately 1800 to 1930. Previous efforts to look at trade in historical archaeology including Adams (1976), Riordan and Adams (1985), and Adams, Bowers, and Mills (2001) have not thoroughly assessed transportation as a means of trade. This dissertation looks at the many ways of assessing diversity in archaeology, biology, business, and economics, as …

Device Characterization And Compact Modeling Of The Sige Hbt In Extreme Temperature Environments, Beth Olivia Woods

Graduate Theses and Dissertations

The silicon germanium heterojunction bipolar transistor, SiGe HBT, has very high frequency response but limited voltage range. Commercial communication applications in wireless and system integration have driven the development of the SiGe HBT. However, the device's excellent electrical performance goes beyond the commercial environment. The SiGe HBT performs exceptionally at low temperatures. The device DC current gain and AC small-signal gain significantly increase in the cryogenic temperature range. Applications at low temperatures with expansive temperature range specifications need an HBT compact model to accurately represent the device's performance.

In this work, a compact model referenced at 300K was developed to …

Re-Examining Late Chalcolithic Cultural Collapse In South-East Europe, Harvey Benjamin Smith

Graduate Theses and Dissertations

Research into the Balkan Chalcolithic often overlooks the dramatic changes in society that occurred beginning in the late Fifth Millennium BCE. Most settlements were abandoned along with changes in mortuary customs, ceramic and decorative traditions, domestic rituals, crafts, housing styles, mining, and metallurgy. These changes happened at a time when these Chalcolithic societies seemed to be at their peak. Theories as to what caused these changes include migrations/invasions, anthropogenic environmental degradation, gradual internal changes through innovation and outside contacts, and climate change. This thesis attempts to synthesize, and critique material relating to this topic, and ultimately provide my own opinions …

Comparing The Impact Of Traditional And Modeling College Algebra Courses On Student Performance In Survey Of Calculus, Jerry West

Graduate Theses and Dissertations

Students in higher education deserve opportunities to succeed and learning environments which maximize success. Mathematics courses can create a barrier for success for some students. College algebra is a course that serves as a gateway to required courses in many bachelor's degree programs. The content in college algebra should serve to maximize students' potential in utilizing mathematics and gaining skills required in subsequent math-based courses when necessary. The Committee for Undergraduate Programs in Mathematics has gone through extensive work to help mathematics departments reform their college algebra courses in order to help students gain interest in the utilization of mathematics …

Performance Of The Role Of Stanley Kowalski In Tennessee Williams' A Streetcar Named Desire, William Justin Walker

Graduate Theses and Dissertations

The truth in acting comes from living truthfully under imaginary circumstances. For partial fulfillment of my degree, I sought to bring this truth to the stage for the role of Stanley Kowalski in Tennessee Williams' A Streetcar Named Desire. In addition, I played the role of Reach in Lee Blessing's Down the Road.

Considering Kranzhügeln: An Exploration Into The Structural Variation And Environmental/Spatial Distribution Of The Third Millennium "Kranzhügel" Sites, Elise Jakoby

Graduate Theses and Dissertations

First named by von Oppenheim over a century ago, the distinctive third millennium BC kranzhügeln, or "wreath-mound," sites of the Syrian Desert remain a poorly understood phenomenon. While archaeological investigations have been undertaken at a handful of kranzhügel-like sites including Tell Chuera, Tell al-Rawda, and Tell Beydar, the overall number, geographic distribution, and morphological variation of so-called "kranzhügel" sites remains largely unexplored.

1960s-era CORONA satellite imagery available through the CORONA Atlas Project (http://corona.cast.uark.edu/) now enables more systematic documentation of the kranzhügel sites and the production site-scale visual and quantitative analysis. Analysis of kranzhügel distribution and morphology …

Groundcover Management System And Nutrient Source Impact Physical Soil Quality Indicators In An Organically Managed Apple Orchard, Neal Mays

Graduate Theses and Dissertations

In March 2006, four groundcover management systems (GMS) and two nutrient sources (NS) were implemented for their ability to alter the soil physical condition of a newly established, organically managed apple (Malus x domestica Borkh.) orchard. Annual applications of municipal green compost (GC), shredded office paper (SP), wood chips (WC), and mow-blow (MB) grass mulch were utilized as GMS, and NS supplied to trees were from composted poultry litter (PL), a commercial organic fertilizer (CF), or an untreated control (NF) in a 4x3 factorial study. An established, conventionally-managed orchard was located adjacent to the organic research orchard on the same …

A Secure And Fair Resource Sharing Model For Community Clouds, Santhosh S. Anand

Graduate Theses and Dissertations

Cloud computing has gained a lot of importance and has been one of the most discussed segment of today's IT industry. As enterprises explore the idea of using clouds, concerns have emerged related to cloud security and standardization. This thesis explores whether the Community Cloud Deployment Model can provide solutions to some of the concerns associated with cloud computing. A secure framework based on trust negotiations for resource sharing within the community is developed as a means to provide standardization and security while building trust during resource sharing within the community. Additionally, a model for fair sharing of resources is …

Directed Percolation And The Abstract Tile Assembly Model, Tyler Garrett Moore

Graduate Theses and Dissertations

Self-assembly is a process by which simple components build complex structures through local interactions. Directed percolation is a statistical physical model for describing competitive spreading processes on lattices. The author describes an algorithm which can transform a tile assembly system in the abstract Tile Assembly Model into a directed percolation problem, and then shows simulations of the aTAM which support this algorithm. The author also investigates two new constructs designed for Erik Winfree's abstract Tile Assembly Model called the NULL tile and temperature 1.5. These constructs aid the translation between self-assembly and directed percolation and may assist self-assembly researchers in …

A Comparison Of Perceived Fit Issues Of Apparel As It Relates To Body Image And Body Satisfaction Among High School Athletes And Non-Athletes Using 3-D Body Scan Technology, Stephanie Kay Hubert

Graduate Theses and Dissertations

The objectives of this study were to first, determine whether high school students have the perception that they have problems finding clothing that fits their bodies, as well as the second objective which was to determine if the problem is common among both athletes and non-athletes or if one group finds fit of apparel more problematic. The third objective was to determine if body image and body satisfaction have an effect on the likelihood of athletes and non-athletes reporting problems with fit issues of clothing available from ready-to-wear stores. Hypothesis I and III analyzed body image, Hypothesis IV analyzed body …

Agricultural Production And Stability Of Settlement Systems In Upper Mesopotamia During The Early Bronze Age (Third Millennium Bce), Tuna Kalayci

Graduate Theses and Dissertations

This study investigates the relationship between rainfall variation and rain-fed agricultural production in Upper Mesopotamia with a specific focus on Early Bronze Age urban settlements. In return, the variation in production is used to explore stability of urban settlement systems. The organization of the flow of agricultural goods is the key to sustaining the total settlement system.

The vulnerability of a settlement system increases due to the increased demand for more output from agricultural lands. This demand is the key for the success of urbanization project. However, without estimating how many foodstuffs were available at the end of a production …

Are All Voices Created Equal?: Conditional Indirect Effects Of Directness Of One's Voice On Perceived Uncertainty And Performance, Dennis Lawrence Poepsel

Graduate Theses and Dissertations

The purpose of the current investigations was to examine the effects of the amount of voice one is given during decision-making on group behaviors. In particular, across two studies, participants were members of groups that needed to make a decision. In these situations, participants were provided varying degrees of voice during a decision-making process. Depending on the study, participants were either given a direct voice (Personal Voice), an indirect voice (Group Voice), a direct voice and an indirect voice (Composite Voice), or were not allowed a voice (No Voice). The results of Study 1 found that having Personal Voice or …

Content And Concept: An Examination Of Transcendental Empiricism, Charles Macmillan Urban

Graduate Theses and Dissertations

In this dissertation, I critically examine the philosophy of transcendental empiricism. Transcendental empiricism is, among other things, a philosophy of mental content. It attempts to dissolve an epistemological dilemma of mental content by splitting the difference between two diametrically opposed accounts of content. John McDowell's minimal empiricism and Richard Gaskin's minimalist empiricism are two versions of transcendental empiricism. Transcendental empiricism itself originates with McDowell's work. This dissertation is divided into five parts. First, in the Introduction, I state the Wittgensteinian metaphilosophical orientation of transcendental empiricism. This metaphilosophical approach provides a plateau upon which much of the rest of this work …

Identifying Robust Sift Features For Improved Image Alignment, Sanjay Abhinav Vemuri

Graduate Theses and Dissertations

In this thesis, we will study different ways to improve feature matching by increasing the quality and reducing the number of SIFT features. We created an algorithm to identify robust SIFT features by evaluating how invariant individual feature points are to changes in scale. This allows us to exclude poor SIFT feature points from the matching process and obtain better matching results in reduced time. We also developed techniques consider scale ratios and changes in object orientation when performing feature matching. This allows us to exclude false-positive feature matches and obtain better image alignment results.

Everything Is Flat: The Transcendence Of The One In Neoplatonic Ontology, Joshua Packwood

Graduate Theses and Dissertations

My dissertation research addresses the relationship between the One and everything else in Neoplatonic metaphysics. Plato is vague in describing this distinction and thus much of late antiquity attempts to fill in the gaps, as it were. The potential difficulty, however, is that the hierarchy of existence in late antiquity is susceptible to being understood as postulating a being that is "beyond being." To avoid this difficulty, I propose an interpretation of Dionysius the Areopagite to show that being is, by definition, intelligible and thus finite and limited. Since the first principle is that which is infinite it therefore cannot …

Landscape Epidemiology And Machine Learning: A Geospatial Approach To Modeling West Nile Virus Risk In The United States, Sean Gregory Young

Graduate Theses and Dissertations

The complex interactions between human health and the physical landscape and environment have been recognized, if not fully understood, since the ancient Greeks. Landscape epidemiology, sometimes called spatial epidemiology, is a sub-discipline of medical geography that uses environmental conditions as explanatory variables in the study of disease or other health phenomena. This theory suggests that pathogenic organisms (whether germs or larger vector and host species) are subject to environmental conditions that can be observed on the landscape, and by identifying where such organisms are likely to exist, areas at greatest risk of the disease can be derived. Machine learning is …

Genetic Structure Of The Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) At Its Most Northern Distribution, Brenna Aaren Levine

Graduate Theses and Dissertations

The focus of molecular studies in North American pitvipers has been on species that warrant conservation concern, such as Timber (Crotalus horridus) and Massasauga rattlesnakes (Sistrurus catenatus). Scant effort has been directed towards the molecular ecology of the Copperhead (Agkistrodon contortrix), other than to evaluate male reproduction in a laboratory setting and phylogenetic history. Thus, employing DNA-based molecular techniques to study the natural history of A. contortrix will broaden our knowledge of molecular ecology in North American pitvipers, and particularly in a non-threatened species that can serve as a surrogate for threatened and endangered …

Evaluating The Formation Of Bacterial Chondronecrosis With Osteomyelitis In Broilers Raised On Portable Wire Floor Models, Alex David Gilley

Graduate Theses and Dissertations

Rearing birds on wire flooring has proven to be an effective method for consistently triggering significant levels of lameness in broilers, and while the wire flooring model has been proven effective, more mobile wire floor models have been developed to compliment the facility management conditions within commercial genetic selection programs. The mobile wire floor models have been titled "speed bumps", and through previous evaluation have resulted in significantly higher levels of lameness in broilers compared to litter floor shavings. The current experiment contains two studies (studies 1 and 2). Both studies involved comparing leg weakness between broiler strains; while in …

New Mexico Tourism: Conflict And Cooperation In The Land Of Enchantment, Emily Alyce Bullington

Graduate Theses and Dissertations

The purpose of this study is to analyze the impact that tourism and tourist sites have upon the surrounding communities in New Mexico. It will look specifically at Bandelier National Monument, El Santuario de Chimayo, and the International UFO Museum and Research Center in Roswell. These sites have all been the cause of tensions in their interactions with the local communities, over issues of culture, identity, or resource usage. But these tourist attractions have also brought economic stimulus to these areas, which has brought about a need for cooperation and compromise between the groups as they have negotiated how tourism …

The Effect Of Symmetry On The Riemann Map, Jeanine Louise Myers

Graduate Theses and Dissertations

The Riemann mapping theorem guarantees the existence of a conformal mapping or Riemann map in the complex plane from the open unit disk onto an open simply-connected domain, which is not all of the complex plane. Although its existence is guaranteed, the Riemann map is rarely known except for special domains like half-planes, strips, etc. Therefore, any information we can determine about the Riemann map for any class of domains is interesting and useful.

This research investigates how symmetry affects the Riemann map. In particular, we define domains with symmetries called Rectangular Domains or RDs. The Riemann map of an …

Cold War Battleground In Africa: American Foreign Policy And The Congo Crisis, January 1959 - January 1961, Souleyman Saleh Souleyman

Graduate Theses and Dissertations

In the late 1950s, the Cold War competition between the United States and the Soviet Union turned the Congo as one of the most volatile regions of the Third World. Because of Belgium's failure to effective decolonize the Congo, and because of the secession of two of the richest provinces of the Congo, the country would quickly fell into chaos and a civil war that would force its former colonial power to maintain its economic and military influence in the region. This neocolonial attitude induced Congo's Prime Minister, Patrice Lumumba, to request a military assistance from the Soviet Union. In …

Feet In The South, Eyes To The West: Fort Smith Enters The Sunbelt, Adam Morrison Carson

Graduate Theses and Dissertations

This paper examines the political realignment of Fort Smith, Arkansas and argues that the standard historiographical argument about the process of realignment does not explain what occurred in this city. Much of the historiography of political realignment currently revolves around the belief in a white backlash against the federal government and the national Democratic Party for their support of African American civil rights. Though historians have moved toward a "suburban synthesis" that downplays the backlash thesis, historians still argues that many white southerners moved to the suburbs to avoid integration.

I argue that this process did not occur in the …

"And So We Moved Quietly": Southern Methodist University And Desegregation, 1950-1970, Scott A. Cashion

Graduate Theses and Dissertations

Southern Methodist University was the first Methodist institution in the South to open its doors to African Americans in the early 1950s. There were several factors that contributed to SMU pushing for desegregation when it did. When SMU started the process of desegregation in the fall of 1950, two schools in the Southwest Conference had already admitted at least one black graduate student. University officials, namely then President Umphrey Lee, realized that because other schools had desegregated, it would not be long before SMU would have to do the same. Lee started the path towards desegregation in 1950, and it …

Theoretical Underpinnings Of Jury Decision Making In Excuse Defense Cases, Christopher Sean Peters

Graduate Theses and Dissertations

In the typical criminal trial, a defendant is trying to prove he/she is not guilty because they were not the individual that committed the crime. However, another type of defense exists in which the defendant admits they were the culprit, but provides an excuse in an attempt to avoid criminal punishment. These so called "excuse defenses" include insanity, involuntary intoxication, age, and entrapment. In all cases, juries are required to determine whether the defendant had sufficient mental capacity to form the intent to commit the crime. Although jury decision making is a popular research area in psychology, relatively little has …

After Orwell: Totalitarian Fears And The English Political Novel, 1950-2010, Jackson Ayres

Graduate Theses and Dissertations

After Orwell: Totalitarian Fears and the English Political Novel, 1950-2010 gives a coherent account of the English political novel after World War II, a critical narrative absent from current scholarship. I contend that George Orwell's Nineteen Eighty-Four (1949), a touchstone for political fiction, is underwritten by Orwell's conflicted attitude toward politics: despite embracing politics as the necessary means to genuinely improve people's lives, he also remained suspicious of politics' apparently inherent potential to diminish or even eliminate autonomy. Orwell's simultaneous attraction and vigorous resistance to politics, I argue, is tied to broader contemporaneous anxieties over political and cultural totalization. Such …

Attention And Criminal Charge, Profile And Description: The Effect On Prospective Person Memory, Lindsey Nicole Sweeney

Graduate Theses and Dissertations

Prospective person memory is the ability to recognize and react to a missing or wanted individual that one has been asked to be on the lookout for in the future. Prospective person memory relies on several processes including face recognition, event-based prospective memory, and attention. Only recently has research on the role of visual attention on prospective person memory been examined. In this dissertation, the gap between prospective person memory and attention is addressed. Although research on prospective person memory is steadily increasing, the research in this area is still in its infancy and the exact memory mechanisms that affect …

A Mixed-Method Examination Of Homicides Targeting Lgbt Individuals In The United States, Kristin Kaye Kelley

Graduate Theses and Dissertations

The purpose of the current study is to understand the dynamic processes of fatal attacks against lesbian, gay, bisexual, and transgender (LGBT) individuals across different situational circumstances. Recent scholarship has begun to identify the heterogeneous nature of anti-LGBT homicides, including possible differences in how victims are targeted by offenders. However, several limitations of prior research have stunted the systematic examination of these circumstances. Few studies, for instance, have disaggregated by crime type and bias type, thus masking unique patterns and causal processes associated with varying types of anti-LGBT homicide events. Others have relied on official data sources whose validity and …

Synthesis Of Optimized Inp/Zns Core/Shell Nanocrystals And Tio2 Nanotubes For Quantum Dot Sensitized Solar Cells, Seungyong Lee

Graduate Theses and Dissertations

Synthesis of InP/ZnS core/shell nanocrystals and TiO₂ nanotubes and the optimization study to couple them together were explored for quantum dot sensitized solar cells. Its intrinsic nontoxicity makes the direct band gap InP/ZnS core/shell be one of the most promising semiconductor nanocrystals for optoelectric applications, with the advantage of tuning the optical absorption range in the desired solar spectrum region. Highly luminescent and monodisperse InP/ZnS nanocrystals were synthesized in a non-coordinating solvent. By varying the synthesis scheme, different size InP/ZnS nanocrystals with emission peaks ranging from 520 nm to 620 nm were grown. For the purpose of ensuring air …

Math, Science, And Social Studies Teachers' Attitudes Toward Diversity And Accommodation Of Diversity With Reference To Culturally And Linguistically Diverse Seventh, Eighth, And Ninth Grade Students In A Mid-South State, Nadia Khrais

Graduate Theses and Dissertations

The purpose of this study was exploring seventh, eighth, and ninth grade teachers' attitudes and beliefs in response to classroom diversity and how that is reflected on their instruction, learning styles, communication patterns, instrumental materials, and assessment patterns in math, science, and Social studies subject areas. In this mixed-method research, the designed survey consisted of 59 questions based on Likert scale and obtained information of ten demographic factors. The survey was delivered in two formats (online link and hard copy) to the participating schools in three urban school districts in a Mid-South State. The survey data were analyzed by using …