Digital Commons Network^™

Conceptual Xml For Systems Analysis, Reema Al-Kamha

Theses and Dissertations

Because XML has become a new standard for data representation, there is a need for a simple conceptual model that works well with XML-based development. In this research we present a conceptual model for XML, called C-XML, which meets this new need of systems analysts who store their data using XML. We describe our implementation of an automatic conversion from XML Schema to C-XML that preserves information and constraints. With this conversion, we can view an XML Schema instance graphically at a higher level of abstraction. We also describe our implementation of an automatic conversion from C-XML to XML Schema. …

C-Reactive Protein Levels According To Physical Activity And Body Weight For Participants In The Coronary Health Improvement Project, Michael T. Massey

Theses and Dissertations

Objectives. Evaluate C-reactive protein (CRP) levels according to weight and physical activity. The study explored how changes in CRP were associated with baseline CRP, weight, and physical activity and changes in these variables.

Methods. A randomized controlled study design assigned 348 individuals to the intervention or control group with measurements taken at baseline, 6 weeks, and 6 months of body weight, physical activity, and serum CRP levels. Participants attended an intensive 40-hour educational course delivered over a four-week period.

Results. At baseline, CRP was negatively associated with total steps/week, and positively associated with weight, BMI, percent fat, and saturated fat …

Intrasentential Vs. Intersentential Code Switching In Early And Late Bilinguals, Kelly Ann Hill Zirker

Theses and Dissertations

Significant research has been done regarding the influence of age of acquisition (i.e., the age at which one is exposed to a second language (L2)) on L2 learning (e.g., Johnson & Newport, 1989; Bialystock & Hakuta, 1999). Some researchers have shown that bilinguals who have learned their second language early in life may differ in their fluency from bilinguals who learned their second language later in life (White & Genesee, 1996; Flege, 1999). Specifically, studies have suggested that bilinguals who have not acquired their L2 by puberty will never acquire native-like proficiency (Lenneberg, 1967); however, others claim that there is …

Religion And Academic Achievement Among Adolescents, Benjamin Allen Mckune

Theses and Dissertations

This thesis examines the association between religiosity and academic achievement among adolescents. Recent research demonstrates a positive association between religiosity and academic success. However, some studies show that this is due to family and community factors; for example, variation in levels of family capital among religious affiliates may explain this association. Yet, whether religious factors affect academic achievement among adolescents may also be due to the concordance or discordance of religiosity among parents and their children. Using two years of data from the National Longitudinal Study of Adolescent Health (Add Health) (n=8,051), I examine the association between adolescent religiosity, parent …

An Investigation Of A Positive Engagement, Continuously Variable Transmission, Brian S. Andersen

Theses and Dissertations

A continuously variable transmission (CVT) is a type of transmission that allows an infinitely variable ratio change within a finite range, allowing the engine to continuously operate in an efficient or high performance range. A brief history of CVTs is presented, including the families under which they can be categorized. A new family of CVTs, with the classification of positive engagement, is presented. Three different published embodiments of CVTs of the positive engagement type are presented describing a meshing problem that exists apparently regardless of the embodiment in this family. The problem is called the non-integer tooth problem and its …

Paths Toward Impulsive Buying: The Effect Of Credit Use And Debt Avoidance On The Paths Between Money Attitudes And Impulsive Buying Among U.S. College Students, Jacob Prior Sybrowsky

Theses and Dissertations

Money attitudes modeled in the home are an important part of a child's economic socialization. Although not always labeled as such, earlier literature clearly addressed this type of child learning through observation, interaction, and direct familial involvement (Rettig, 1986). Families operate as one of society's most salient economic socializing agents as they provide environments conducive to human development, information networks, role models, and grants and exchanges (Rettig, 1983). The research reported here addresses the economic socialization of children and their money attitudes as emerging adults. The current study investigated the role of money attitudes (power, anxiety, and distrust) by examining …

Ground Reaction Force Differences Between Running Shoes, Racing Flats, And Distance Spikes In Runners, Suzanna Jean Logan

Theses and Dissertations

To measure the differences in ground reaction forces between running shoes, racing flats, and distance spikes, twenty intercollegiate distance runners ran across a force plate at 6.7m/s (for males) and 5.74m/s (for females) in each of the three types of shoes. In order to control for differences in foot strike, only subjects who had a heel strike were included in the data analysis (N=16). Repeated-measures ANOVA and Tukey's post-hoc test (p<0.05) revealed loading rate and impact peak to be significantly increased in the flats and spikes compared to running shoes. Stiffness in spikes was significantly higher than in running shoes. Stance time in spikes and flats was decreased. These results can be used to better inform competitive runners, coaches, and trainers of the risks and performance benefits when determining the frequency and duration of the use of competitive footwear in training.

Intelligent Rotoscoping: A Semi-Automated Interactive Boundary Tracking Approach To Video Segmentation, Seth R. Holladay

Theses and Dissertations

Video segmentation is an application of computer vision aimed at automating the extraction of an object from a series of video frames. However, it is a difficult problem, especially to compute at real-time, interactive rates. Although general application to video is difficult because of the wide range of image scenarios, user interaction can help to reduce the problem space and speed up the computation. This thesis presents a fast object-tracking tool that selects an object from a series of frames based on minimal user input. Our Intelligent Rotoscoping tool aims for increased speed and accuracy over other video segmentation tools, …

Emotional Health And Weight Gain: A Prospective Study Of Middle-Aged Women, Ann Bahr

Theses and Dissertations

The objective of this study was to investigate the extent to which risk of gaining weight or body fat is affected by emotional health in women. A secondary objective was to determine the influence of age, baseline weight and body fat, physical activity (PA), energy intake, and changes in PA and energy intake, on the relationship between emotional health and gains in weight and body fat. The study was a prospective cohort investigation over 20 months of 256 healthy, non-obese females (age: 35-45 y, BMI < 30 kg/m2). All subjects were assessed for several variables using objective measurements at baseline and again at 20 months. Emotional health was assessed using the General Well-Being Schedule. Body fat percentage was indexed using the Bod Pod. PA was measured objectively using MTI (CSA) accelerometers, and energy intake was measured using weighed, 7-day food records. The results of the study demonstrated that risk of gains in weight and body fat were no greater in depressed women compared to their counterparts. However, 171 (66.8%) subjects demonstrated less than positive (LTP) emotional health at baseline, and 37.4% of these subjects gained weight during the 20-month study. Conversely, 85 (33.2%) subjects had positive emotional health at baseline, but only 23.5% gained weight over the investigational period. With no variables controlled, women with LTP emotional health had 59% greater risk of weight gain over the study period than women with positive emotional health (RR 1.59, 95% CI = 1.04-2.44). Women with LTP emotional health were at no greater risk of gains in body fat percentage than women with positive emotional health (RR 0.96, 95% CI = 0.70-1.33). After adjusting for each potential confounder individually, risk of gaining weight or body fat did not change. However, after adjusting for all of the potential confounders simultaneously, risk of weight gain was weakened (RR 1.43, 95% CI = 0.93-2.21). These results seem to demonstrate that middle-aged women with LTP emotional health may be at increased risk of gaining weight compared to women with positive emotional health.

Finding Termination And Time Improvement In Predicate Abstraction With Under-Approximation And Abstract Matching, Dritan Kudra

Theses and Dissertations

The focus of current formal verification methods is mitigating the state explosion problem. One of these formal methods is predicate abstraction, which reduces concrete states of a system to bitvectors of true/false valuations of a set of predicates. Predicate abstraction comes in two flavors, over-approximation and under-approximation. A drawback of over-approximation is that it produces too many spurious errors for data-intensive applications. A more recent under-approximation technique which does not produce spurious errors, does abstract matching on concrete states (AMCS). AMCS adds behaviors to an abstract system by augmenting the set of initial predicates, making use of a theorem prover. …

Cognitive And Behavioral Model Ensembles For Autonomous Virtual Characters, Jeffrey S. Whiting

Theses and Dissertations

Cognitive and behavioral models have become popular methods to create autonomous self-animating characters. Creating these models presents the following challenges: (1) Creating a cognitive or behavioral model is a time intensive and complex process that must be done by an expert programmer (2) The models are created to solve a specific problem in a given environment and because of their specific nature cannot be easily reused. Combining existing models together would allow an animator, without the need of a programmer, to create new characters in less time and would be able to leverage each model's strengths to increase the character's …

Therapists' Perceived Influence Of Language: Second Language Spanish Speaking Therapists With Native Spanish-Speaking Clients, Cameron D. Mount

Theses and Dissertations

Experiences of the bilingual client in therapy have received attention in the literature but accounts of the experience of the bilingual therapist are strikingly sparse. The purpose of this study was to focus on the bilingual therapist's perception of the impact of language on the therapeutic process. To achieve this goal, the researcher interviewed therapists who speak Spanish as a second language and work with native Spanish-speaking clients. Data analysis was completed using ethnographic research methods, which resulted in the emergence of three themes. The first theme included therapists' perceived obstacles to second-language therapy. Each of the participants in the …

Computationally Efficient Modeling Of Transient Radiation In A Purely Scattering Foam Layer, Rudolph Scott Larson

Theses and Dissertations

An efficient solution method for evaluating radiative transport in a foam layer is a valuable tool for predicting the properties of the layer. Two different solution methods have been investigated. First, a reverse Monte Carlo (RMC) simulation has been developed. In the RMC simulation photon bundles are traced backwards from a detector to the source where they were emitted. The RMC method takes advantage of time reflection symmetry, allowing the photons to be traced backwards in the same manner they are tracked in a standard forward Monte Carlo scheme. Second, a reduced order model based on the singular value decomposition …

Carlo Cattaneo: The Religiosity Of A Relunctant Revolutionary, Carolyn Bennett Ugolini

Theses and Dissertations

Carlo Cattaneo (1801-1869) would have been a remarkable man in any time period. He was interested in everything, and as a man of ideas was involved in the astonishing technological and stimulating political events of the nineteenth century. He encouraged the building of railways as a way to unite the Italian peninsula, and he was involved in connecting Italy to the rest of Europe through the St. Gothard Tunnel. An innovator of gas lighting in his native Milan, the great Lombard thinker was a prolific writer, and kept prodigious notes and copies of his correspondence. His economic and scientific involvement …

Mapping Middle Paleozoic Erosional And Karstic Patterns With 3-D Seismic Attributes And Well Data In The Arkoma Basin, Oklahoma, Alonzo R. Brinkerhoff

Theses and Dissertations

Newly available industry well data and seismic attribute analysis reveal that late Ordovician-early Devonian Hunton Group strata are more widespread (i.e., not removed by mid-Devonian erosion) in the central and southern portions of the Arkoma Basin in eastern Oklahoma than previously thought. This study demonstrates the value of applying seismic attribute analysis to problems of quantifying and mapping stratigraphic features caused by erosions and/or karstification. Well and seismic isochron data in the Red Oak petroleum field for the Viola-Woodford interval (the units that lie stratigraphically beneath and above, respectively, the Huton Group) show isolated ~40-m thick lenses of Hunton rocks, …

Interactions Among Italian Preschool-Age Children: Aggression, Victimization, And Sociometric Status, Shawna J. Marshall

Theses and Dissertations

This study examined social interactions between Italian preschoolers based upon sociometric status groupings. The sample consisted of 267 Italian preschoolers (mean age 64 months) taken from early childhood classrooms in southern Italy. Drawing on previous research, preschoolers' physical and relational aggression and physical and relational victimization as measured by peer nominations were analyzed. Structural equation modeling using Mplus was used to test the model, and SPSS 15 was used to run analyses of variance (ANOVAs) to examine the interaction between sociometric status and preschoolers' behaviors toward peers. Findings generally support previous research with American children as well as cross-cultural research …

Vision-Based Control And Flight Optimization Of A Rotorcraft Uav, David Christian Hubbard

Theses and Dissertations

A Rotorcraft UAV provides an ideal experimental platform for vision-based navigation. This thesis describes the flight tests of the US Army PALACE pro ject, which implements Moravec's pseudo-normalized correlation tracking algorithm. The tracker uses the movement of the landing site in the camera, a laser range, and the aircraft attitude from an IMU to estimate the relative motion of the UAV. The position estimate functions as a GPS equivalent to enable the rotorcraft to maneuver without the aid of GPS. Flight tests were performed with obstacles and over concrete, asphalt, and grass in daylight conditions with a safe landing area …

No. 142 Journal Of East Asian Libraries, Journal Of East Asian Libraries

Journal of East Asian Libraries

No abstract provided.

With Memories Of Karl Lo: A Report On The 9Th International Conference On Asian Digital Libraries, Maureen H. Donovan

Journal of East Asian Libraries

No abstract provided.

Patterns Of User Activity In The Blackboard Course Management System Across All Courses In The 2004-2005 Academic Year At Brigham Young University, Michael E. Griffiths

Theses and Dissertations

The following report discusses the use of the Blackboard Course Management in terms of overall patterns of activity as recorded in the Blackboard activity database across the whole campus of Brigham Young University during the 2004-2005 academic year. The report contains a set of data represented by tables and graphs that summarize activity, or clicks, in the Blackboard system performed by students, professors, and assistants. The clicks are summarized according to a number of different categories and criteria and analyzed to show interesting patterns of activity. The report is designed to show a general campus wide summary of Blackboard activity …

Korean Collections Consortium Of North America: Ten Years And After, Hyokyoung Yi

Journal of East Asian Libraries

No abstract provided.

Membership In A Particular Social Group: International Journalists And U.S. Asylum Law, Edward L. Carter, Brad Clark

Faculty Publications

At least thirty non-U.S. journalists in the last decade have argued in U.S. Courts of Appeal that U.S. immigration authorities erroneously denied their asylum applications based on persecution in their native countries. ... Still, journalists persecuted in their home countries for their journalism work might better fit the statutory qualifications for asylum --primarily persecution on account of race, religion, nationality, political opinion or membership in a "particular social group"--than the U.S. immigration system sometimes acknowledges. ... Finally, and most importantly, the asylum seeker bears the burden to establish that he or she is unable or unwilling to return to his …

Beyond Fidelity: The Translation Process In Two Adaptations Of Juan Marsé’S El Embrujo De Shanghai, Jessie Louise Christensen

Theses and Dissertations

In the past, the study of film adapted from literature has focused largely on the question of fidelity. This thesis explores new ways to look at the relationship between literature and film by showing how concepts from the field of translation studies, particularly literary translation, can enrich the study of adaptation theory. An application is made to the case of Spanish novelist Juan Marsé’s work El embrujo de Shanghai, which has been adapted to film by Fernando Trueba and to screenplay by Victor Érice. Rather than taking a hierarchical approach to the novel and its two variations, a comparative approach …

Temporally Correlated Dirichlet Processes In Pollution Receptor Modeling, Matthew J. Heaton

Theses and Dissertations

Understanding the effect of human-induced pollution on the environment is an important precursor to promoting public health and environmental stability. One aspect of understanding pollution is understanding pollution sources. Various methods have been used and developed to understand pollution sources and the amount of pollution those sources emit. Multivariate receptor modeling seeks to estimate pollution source profiles and pollution emissions from concentrations of pollutants such as particulate matter (PM) in the air. Previous approaches to multivariate receptor modeling make the following two key assumptions: (1) PM measurements are independent and (2) source profiles are constant through time. Notwithstanding these assumptions, …

What Are Some Of The Common Traits In The Thought Processes Of Undergraduate Students Capable Of Creating Proof?, Karen Malina Duff

Theses and Dissertations

Mathematical proof is an important topic in mathematics education research. Many researchers have addressed various aspects of proof. One aspect that has not been addressed is what common traits are shared by those who are successful at creating proof. This research investigates the common traits in the thought processes of undergraduate students who are considered successful by their professors at creating mathematical proof. A successful proof is defined as a proof that successfully accomplishes at least one of DeVilliers (2003) six roles of proof and demonstrates adequate mathematical content, knowledge, deduction and logical reasoning abilities. This will typically be present …

Mechanisms Causing Ferric Staining In The Secondary Water System Of Brigham City, Utah, Robert Derring Wallace

Theses and Dissertations

Water from Mantua reservoir has, during some years, exhibited reddish-brown staining when used by Brigham City for irrigation. I propose that seasonal fluctuations in the reservoir chemistry create an environment conducive to dissolving iron from the iron-rich sediments, which subsequently precipitate during irrigation, resulting in a staining event. These conditions are produced by chemical and biological decomposition of organic matter, coupled with isolation of the hypolimnetic waters, which results in seasonal low concentrations of dissolved oxygen in these waters. Under these specific circumstances, anaerobic conditions develop creating a geochemical environment that causes iron and manganese reduction from Fe(III) to Fe(II) …

Dynamic Full-Scale Testing Of A Pile Cap With Loose Silty Sand Backfill, Immanuel Kaleoonalani Runnels

Theses and Dissertations

Pile caps are used in foundation design to aid multiple single piles to act as a pile group to resist lateral forces that may cause overturning moments. The pile cap and pile group resist these forces by pile-soil-pile interaction, base and side friction along the pile cap-backfill interface, and passive earth resistance. Passive earth resistance has been neglected in design due to a limited amount of full-scale testing. This research presents the results of a combination of hydraulic actuator and eccentric-mass shaker full-scale testing of a pile cap with loose silty sand backfill to quantify the contribution of the passive …

On Connections Between Univalent Harmonic Functions, Symmetry Groups, And Minimal Surfaces, Stephen M. Taylor

Theses and Dissertations

We survey standard topics in elementary differential geometry and complex analysis to build up the necessary theory for studying applications of univalent harmonic function theory to minimal surfaces. We then proceed to consider convex combination harmonic mappings of the form f=sf_1+(1-s) f_2 and give conditions on when f lifts to a one-parameter family of minimal surfaces via the Weierstrauss-Enneper representation formula. Finally, we demand two minimal surfaces M and M' be locally isometric, formulate a system of partial differential equations modeling this constraint, and calculate their symmetry group. The group elements generate transformations that when applied to a prescribed harmonic …

The Correlation Between The Eating Attitudes Test And Body Shape Questionnaire, Maren L. Kanekoa

Theses and Dissertations

This research examined the relationship between eating attitudes and body image dissatisfaction using the Eating Attitudes Test (EAT) and the Body Shape Questionnaire (BSQ). Three cohorts of almost 2,000 undergraduate females from Brigham Young University were given the EAT and BSQ twice a year for two to four years, depending upon their year of entrance to BYU. The data collected were analyzed using correlational statistics. Results indicated that a high positive correlation between the EAT and BSQ existed across semesters and cohorts.

Large-Displacement Linear-Motion Compliant Mechanisms, Allen B. Mackay

Theses and Dissertations

Linear-motion compliant mechanisms have generally been developed for small displacement applications. The objective of the thesis is to provide a basis for improved large-displacement linear-motion compliant mechanisms (LLCMs). One of the challenges in developing large-displacement compliant mechanisms is the apparent performance tradeoff between displacement and off-axis stiffness. In order to facilitate the evaluation, comparison, and optimization of the performance of LLCMs, this work formulates and presents a set of metrics that evaluates displacement and off-axis stiffness. The metrics are non-dimensionalized and consist of the relevant characteristics that describe mechanism displacement, off-axis stiffness, actuation force, and size. Displacement is normalized by …