Digital Commons Network^™

Fold-Thrust System Overprinting Syn-Rift Structures On The Margin Of An Inverted Rift Basin: Indio Mountains, West Texas, Seth Joel Page

Open Access Theses & Dissertations

Detailed mapping in the central Indio Mountains in west Texas, reveal a complex stacking of thrust sheets that record inversion of the Mesozoic Chihuahua Trough rift basin. Important newly recognized structural complexities include both folding of older thrust sheets and development of younger, out-of-sequence thrusts that cut across older folds; detachment fold horizons within thrust sheets; and a regional anticlinorium that exposes the Squaw thrust in a structural half-window bounded on the west by the Neogene Indio normal fault. The Chihuahua trough originated as part of the late Mesozoic border rift system and was inverted during Laramide thrusting. Remnants of …

Free Radical Stress-Induced Parkinsonian Lewy-Like Aggregation Prevented Through Polyphenolic Phytochemical Analog Intervention: Implications For Subcellular Trafficking And Neurodegenerative Disorders, Rituraj Pal

Open Access Theses & Dissertations

Protein disulfide isomerase (PDI), the chief endoplasmic reticulum (ER)-resident oxidoreductase chaperone, is known to catalyze the maturation of disulfide-bond-containing proteins primarily through oxidation-reduction and isomerization functions. The rate-determining step in the oxidative regeneration path of disulfide-bond-containing proteins generally couples chemical thiol-disulfide-exchange reactions to a physical conformational folding reaction. I have determined the impact of PDI and its subdomains on the rate-determining step in ribonuclease A folding and on the physical structure-forming step of select ER-processed proteins including RNase A. This was facilitated through application of a novel chemical tool to exclusively populate native-disulfide-containing intermediates in unstructured forms. The described biochemical …

Comparison Of Four Methods Of Dietary Assessment: Food Records Vs. Combined Food Records With Digital Photography, Sara Lynne Peidle

Open Access Theses & Dissertations

Methods for collecting dietary intakes of free-living individuals have been studied over the past century and there are many limitations. Collection of dietary intakes from individuals is best done in food diary format and researchers have investigated both written and photographic records. The purpose of this study was to add to the body of literature on studies of collecting dietary intakes by comparing written food records (FR), digital food records (DP), written and digital food records combined (FRDP), and digital food records with limited documentation (DPR) to one another and to a known, criterion value. This study included 50 Registered …

An Experimental Study On The Effect Of Particle Geometry On Drag And Flow Behaviors In A Packed Fluidized Bed, Md Mahamudur Rahman

Open Access Theses & Dissertations

Gasification offers a promising solution to producing fuels effectively in the coming years by providing a low-cost energy system, clean environmental performance, and reliability. Feedstock is prepared and fed to a gasifier in either a dry form or as slurry (mixed with water). One application of this technology uses heat, pressure, and steam to convert feedstock into a gaseous mixture, composed primarily of carbon monoxide (CO) and hydrogen (H2), named as syngas. Several technical and commercial issues were identified by the Nation Energy Technology Laboratory (NETL) in 2006 Multiphase workshop. US Department of Energy (DOE) is now focusing on attaining …

Assessing Data Quality In A Sensor Network For Environmental Monitoring, Gesuri Ramirez

Open Access Theses & Dissertations

Assessing the quality of sensor data in environmental monitoring applications is important, as erroneous readings produced by malfunctioning sensors, calibration drift, and problematic climatic conditions, such as icing or dust, are common.Traditional data quality checking and correction is a painstaking manual process, so the development of automatic systems for this task is highly desirable.

This study investigates machine learning methods to identify and clean incorrect data from a real-world environmental sensor network, the Jornada Experimental Range, located in Southern New Mexico. We evaluated several learning algorithms and data replacement schemes, and developed a method to identify the problematic sensor. The …

Impact Of Science And Engineering Graduates On Key Economic Indicators, Nathaniel V. Robinson

Open Access Theses & Dissertations

There are clear trends in the USA with regard to a stagnant growth in science and engineering, particularly engineering, and in greater contrast when considered per capita. Meanwhile certain Asian counties, such as China and Taiwan, have experienced growth in science and engineering graduates beyond mere population growth. This has caught the eye of alarmists and so discussions have ensued over offshoring, national security, economic loss and future impact in the United States. Alarmists and proponents of policies promoting more science, engineering and math have pointed out the trends in overseas growth and US offshoring with a flurry of statistics …

Perceptions Of Disabilities Amongst The Tarahumara In Northern Mexico, Carolyn Raynor Trussell

Open Access Theses & Dissertations

This research focuses on the perceptions of disability amongst the Tarahumara, known amongst themselves as the Rarámuri, in the Sierra Madre region of Northern Chihuahua. This population of individuals has typically lived in isolated areas in communities in the Sierra Madre where medical and specialized educational services were rare. The purpose of this study was to explore the perceptions, knowledge and beliefs related to disabilities, as well as the access and beliefs related to educational and medical services.

The study focused on the individual and the society to examine how bodily conceptions influence perceptions of others. The target group for …

Effect Of Process Parameter On Temperature Distribution, Microstructure, And Mechanical Properties Of Self-Reacting Friction Stir Welded Aluminum Alloy 6061-T651, Monica Adriana Torres

Open Access Theses & Dissertations

Self-reacting friction stir welding is the latest FSW tool configuration developed, it employs two shoulders--one on top and one on the bottom of the workpiece-- this tool configuration offers many advantages over conventional welding techniques. However, the current lack of information and specifications limits its understanding and application. This investigation analyzed the effect of process parameters on temperature distribution, microstructure evolution, and final mechanical properties of 6061-T651 SR-FS welds. A factorial experiment was carried out, in which three-process parameters were analyzed--rotational speed, travel speed, and tool plunge force-- three levels were analyzed for each parameter, except for a tool plunge …

An Evolutionary Approach Based On Viral Replication For Solving Combinatorial Optimization Problems, Claudia Evangelina Valles Sosa

Open Access Theses & Dissertations

A new multi-objective evolutionary algorithm that mimics the way viruses replicate is presented. The purpose of viral replication is to allow the reproduction and survival of its kind. The algorithm is able to produce a large number of solutions to be evaluated by imitating the way viral replication and the infection process work. The well-known multi-objective redundancy allocation problem is used to show the performance of this new viral-based evolutionary approach. The algorithm considers the maximization of system reliability, the minimization of system cost, and the minimization of system weight to be optimized simultaneously. The solution to the multi-objective optimization …

Development Of Load Balancing Algorithm Based On Analysis Of Multi-Core Architecture On Beowulf Cluster, Damian Valles

Open Access Theses & Dissertations

In this work, analysis, and modeling were employed to improve the Linux Scheduler for HPC use. The performance throughput of a single compute-node of the 23 node Beowulf cluster, Virgo 2.0, was analyzed to find bottlenecks and limitations that affected performance in the processing hardware where each compute-node consisted of two quad-core processors with eight gigabytes of memory. The analysis was performed using the High Performance Linpack (HPL) benchmark.

In addition, the processing hardware of the compute-node was modeled using an Instruction per Cycle (IPC) metric that was estimated using linear regression. Modeling data was obtained by using the Tuning …

Indentifying And Understanding User Preferences In Generic Planning Tools, Grisel Ventura

Open Access Theses & Dissertations

Planning is an important cognitive work activity. To support this complex task, the development of planning tools is important to support people during decision-making and problem-solving tasks. Nowadays, a large number of manual and electronic tools support this complex activity; manual and electronic planning tools aid people in creating strategies for effective work performance. However, there is limited information on the design of generic planning tools people use for their activities, and why people choose to use the planning tool they do. Some examples of generic tools for planning are calendars, checklists, agendas, etc.

To answer this question, this research …

The Effect Of Yoga Practice On Glycemic Control Of Type 2 Diabetes Mellitus Patients, Maricarmen Vizcaino

Open Access Theses & Dissertations

The primary purpose of this study was to investigate the effect of yoga practice on glycemic control of Type 2 diabetes mellitus patients by evaluating changes in physiological and psychological stress measures. Participants (n=10) were non-insulin-dependent diabetes mellitus patients free of complications derived from diabetes. The 6-week intervention consisted of structured yoga classes with a registered yoga teacher three times a week. Assessments were completed at baseline and post-intervention. Glycemic control parameters under investigation included fasting blood glucose (FBG), glycated hemoglobin (HbA1c), and insulin sensitivity (QUICKI). Psychological stress was assessed with the perceived stress scale (PSS) and the State-Trait Anxiety …

Implications Of Surface Runoff Recharge In Semi-Arid Regions On Groundwater Sustainability, Omar M. Al-Qudah

Open Access Theses & Dissertations

Amargosa Desert, Nevada regional groundwater studies show that the surface runoff infiltration occurring in the arroyos following runoff producing storms, and this infiltration is considered to be a major source of groundwater recharge. Groundwater infiltration through alluvium was investigated in the Amargosa Desert using borehole drill cuttings, groundwater chemistry, and applying a novel method for collecting runoff water. The sampling process included sediment, precipitation, and runoff water. In total, 176 runoff, 182 sediment, and 45 precipitation samples were collected between January, 2009 and January, 2011.Water chemistry, chloride concentrations, and stable isotopes of water collected from specially designed runoff samplers, placed …

Effects Of The Usage Of Parallel Hardware Architectures In The Simulation Of Artificial Neural Networks Training Process, Carlos Beas

Open Access Theses & Dissertations

Long training times and non-ideal performance have been a big impediment in further continuing the use of Artificial Neural Networks for real world applications. Current research is currently focused on two areas of study that aim to address this problem. The first approach seeks to overcome large training times by devising faster learning algorithms where a set of interconnection weights for which the network produces negligible error takes a less amount of computation to find [Sun98]. The second approach aims to address the impediment by implementing existing training algorithms but on parallel hardware architectures.

While both approaches provide promising advances …

Phylogeography Of Northern Populations Of The Black-Tailed Rattlesnake (Crotalus Molossus Baird And Girard, 1853) With The Revalidation Of C. Ornatus Hallowell, 1854, Christopher Anderson

Open Access Theses & Dissertations

The black-tailed rattlesnake (Crotalus molossus Baird and Girard, 1853) is a wide-ranging species complex with representatives from the southwestern United States through the highlands of central and southern Mexico. The systematics of this group has received little attention and in the past six decades only two taxonomic revisions have been proposed (the transfer of C. basiliscus oaxacus to C. molossus and the elevation of C. m. estebanensis to full species). However, a recent revision of the Neotropical rattlesnakes (C. durissus and C. simus) recovered a polyphyletic C. molossus. Sequenced data were obtained from three mitochondrial genes …

Conformal Electronics Packaging Through Additive Manufacturing And Micro-Dispensing, Richard I. Olivas

Open Access Theses & Dissertations

Realizing electronic systems that are conformal with curved or complex surfaces is difficult if not impossible with conventional fabrication techniques, which require rigid, two dimensional, printed circuit boards (PCB). Flexible copper based fabrication is widely available commercially providing conformance, but not simultaneously stiffness. As a result, these systems are susceptible to reliability problems if repeatedly bent or stretched. The integration of Additive Manufacturing (AM) combined with Direct Print (DP) micro-dispensing can produce shapes of arbitrary and complex form that also allows for 1) miniature cavities for insetting electronic components and 2) conductive traces for electrical interconnect between components. The fabrication …

Teachers Perspectives: An Understanding Of Adhd In A Predominantly Hispanic School District, Heriberto Jesus Oronoz

Open Access Theses & Dissertations

The current study examined problems that teachers encounter when trying to cope with Attention Deficit Hyperactivity Disorder (ADHD) in the classroom, teachers' perceptions and beliefs about ADHD, as well as their ideas for how to improve services to children with ADHD. To do so, ten in- depth interviews were conducted with teachers from the Canutillo Independent School District in El Paso, TX regarding these topics. Findings reveal that teachers encounter difficulties defining ADHD, dealing with ADHD in the classroom, establishing the proper chain of command for diagnosing children, and with inadequate parental involvement. Further, the study found variability in teachers' …

The Exploratory Value Of Agent-Based Models In Social Science, Ricardo Andress Rivera

Open Access Theses & Dissertations

N/A

The Role Of Perceptual Processes In The Use Of And Willingness To Use Professional Health Care Services, Luis Omar Rivera

Open Access Theses & Dissertations

To better address ethnic health disparities, it is imperative that we understand the psychological processes that shape people's use of and willingness to use professional health care services. The current research proposes and tests a model in which people's attentional orientation toward context discourages them from seeking professional health care services because (a) attentional orientation toward context encourages people to attribute symptoms of illness to external/environmental factors and (b) attributing symptoms of illness to external/environmental factors is associated with less use of professional health care services. The results of two studies show mixed support for the proposed model. Consistent with …

Seismological Studies In South-Central Alaska And Northern Mexico, Oscar Mario Romero De La Cruz

Open Access Theses & Dissertations

The work in this study is focused on two different areas, south-central Alaska and northern Mexico. In the first study area, I calculated dynamic stress drops for moderate sized earthquakes and performed receiver function analyses. The goal of the stress drop studies was to determine if events occurring within the more strongly coupled portion of the subducting slab have higher stress drops. My results shows that higher stress drops correspond to the locked and strongly coupled region in Prince William Sound, and lower stress drops are associated with the Cook Inlet region, a zone of relaxation of the plate interface. …

A Sparse Representation Technique For Classification Problems, Reinaldo Sanchez Arias

Open Access Theses & Dissertations

In pattern recognition and machine learning, a classification problem refers to finding an algorithm for assigning a given input data into one of several categories. Many natural signals are sparse or compressible in the sense that they have short representations when expressed in a suitable basis. Motivated by the recent successful development of algorithms for sparse signal recovery, we apply the selective nature of sparse representation to perform classification. In order to find such sparse linear representation, we implement an l₁-minimization algorithm. This methodology overcomes the lack of robustness with respect to outliers. In contrast to other classification …

Algorithms For Training Large-Scale Linear Programming Support Vector Regression And Classification, Pablo Rivas Perea

Open Access Theses & Dissertations

The main contribution of this dissertation is the development of a method to train a Support Vector Regression (SVR) model for the large-scale case where the number of training samples supersedes the computational resources. The proposed scheme consists of posing the SVR problem entirely as a Linear Programming (LP) problem and on the development of a sequential optimization method based on variables decomposition, constraints decomposition, and the use of primal-dual interior point methods. Experimental results demonstrate that the proposed approach has comparable performance with other SV-based classifiers. Particularly, experiments demonstrate that as the problem size increases, the sparser the solution …

Children's Reinforcement-Induced Suggestibility: Its Developmental Trajectory And Relation To Individual Differences, Elizabeth Rose Uhl

Open Access Theses & Dissertations

Research has shown that reinforcement by interviewers can lead children to make false allegations of wrong doing (e.g., Garven, Wood, & Malpass, 2000). The current study examined the developmental trajectory of reinforcement-induced suggestibility and its relation to individual differences among children. Forty-eight kindergarteners, 52 second graders, and 54 fourth graders viewed a science demonstration by a young man introduced as "Paco Perez." One week later they were interviewed about the visit with misleading questions that suggested Paco had engaged in wrongdoing. Half of the children were interviewed using reinforcement; the other half did not receive reinforcement. Two weeks after Paco's …

The Relationship Between Divided Government And Real Per Capita Gross State Product, Adrian Christopher Villasenor

Open Access Theses & Dissertations

This paper analyzes the relationship between divided government and real per capita gross state product in U.S. states using a panel study of data from all of the contiguous U.S. states, except Nebraska, for the period of 1990 to 2007. Some literature can be found on the relationship between divided government and economic growth at the national level. There is a lack of study of this relationship at the state level. Real per capita gross state product is the dependent variable in this study. Divided government, partisan control of the governor's office, partisan control of the state legislature, combined federal …

The Development Of The Seventh-Day Adventist Understanding Of Ellen G. White's Prophetic Gift, 1844-1889, Theodore N. Levterov

Dissertations

Topic. This study is a historical investigation examining the development of the Seventh-day Adventist understanding of Ellen White's prophetic gift between 1844 and 1889.

Purpose. The purpose of this study was to evaluate and analyze the stages of the development of the Seventh-day Adventist understanding of Ellen G. White's prophetic gift from 1844 through 1889 from a historical perspective only. This research is not a theological study and therefore it is beyond its scope to judge, to prove, or to disprove the prophetic gift of Ellen White. It starts with 1844 when Ellen White claimed to have received her first …

A Comparative Study Of The Concept Of Atonement In The Writings Of John R. W. Stott And Ellen G. White, Lawrence O. Oladini

Dissertations

The study examines two evangelical penal substitutionary theologies of atonement presented by John Stott and Ellen White. It adopts a descriptive and analytic approach to examine the respective atonement theologies of both authors. Chapter 1 introduces the purpose of the dissertation and the methodology adopted. Chapter 2 examines the different theories of atonement in Christian theology. Chapters 3 and 4 examine the respective atonement theologies of Stott and White. Chapter 5 is a comparative analysis of the concept of atonement in both authors, while chapter 6 summarizes the conclusions of the study. -- Purpose. The purpose of the research is …

Bab Edh-Dhra', Numeira, And The Biblical Patriarchs: A Chronological Study, Kris J. Udd

Dissertations

Problem. Bab edh-Dhra' and Numeira have been identified by archaeologists as possible candidates for two of the biblical cities of the plain, but their existence in the Early Bronze Age III is too early to match the biblical narrative (Gen 19) by many chronologies of ancient Canaan. This study sought to determine if there is sufficient flexibility in the archaeological and biblical chronologies to make the identification of Bab edh-Dhra' and Numeira with the cities of the plain a viable interpretation.

Method. The range of dates possible for both the archaeological data and the biblical narratives was analyzed. …

A Novel Countermeasure Against The Reaction Time Index Of Countermeasure Use In The P300-Based Complex Trial Protocol For Detection Of Concealed Information, Alexander Sokolovsky, Jessica Rothenberg, Elena Labkovsky, John B. Meixner Jr., J. Peter Rosenfeld

Scholarly Works

A P300 deception detection protocol was tested using simultaneous versus serial countermeasures and stimulus acknowledgment responses. Previously, P300 showed recognition and elevated reaction time identified countermeasure use. Probe-irrelevant P300 differences were significant in both countermeasure groups and control group. Detection rates were 11/12 for controls, 10/12 for serial countermeasure users, and 11/13 for simultaneous countermeasure users. Reaction time detected countermeasure use in serial responders, but not simultaneous responders. The simultaneous response reaction times were indistinguishable from controls.

Prosecutorial Discretion And The Neglect Of Juvenile Shielding Statutes, Andrea L. Dennis

Scholarly Works

When legislatures enact statutes, furtherance of legislative intent depends on the behavior of actors in the executive and judicial branches of government. In the criminal justice system, prosecutors may frustrate legislative intent when they exercise prosecutorial discretion. This Article examines an instance in which prosecutors’ choices work to the detriment of children.

This Article reviews the failure of juvenile shielding statutes to take hold in the prosecution of cases involving child witnesses because of prosecutors’ discretionary decisions not to use these statutes. The Article investigates prosecutors’ pragmatic and doctrinal justifications for not utilizing juvenile shielding statutes and concludes that the …

Big 4 Auditor Affiliation And Accruals Quality In Bangladesh, M. Humayun Kabir, Divesh Sharma, Md Ainul Islam, Amiros Salat

Faculty Articles

Purpose – Bangladesh is an emerging economy and international audit firms operate there through affiliated local audit firms. The Bangladesh audit market can be characterized as an intensely competitive small audit market with relatively poor demand for high-audit quality. In addition, Bangladesh has a relatively small and under developed but growing capital market that is characterized by poor corporate regulation and weak investor protection. The purpose of this paper is to examine the association between Big 4 affiliated auditors and accruals quality in Bangladesh.

Design/methodology/approach – Following prior literature, this paper uses both absolute discretionary accruals and signed discretionary accruals …