Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Brigham Young University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 16111 - 16140 of 19131

Full-Text Articles in Entire DC Network

Marcel Schwob Digital Collection, Michele B. Squires Mar 2008

Marcel Schwob Digital Collection, Michele B. Squires

Theses and Dissertations

This project outlines the discovery and digitization of previously unpublished correspondence composed by late 19th century author and literary critic, Marcel Schwob. Inspired by the inquiry of Bibliothèque Nationale Librarian Bernard Gauthier, Professor Daryl Lee alerted me to the presence of Marcel Schwob materials at BYU. I found that former BYU Professor John Green established a Marcel Schwob Memorial Collection and successfully published two books using the materials he gathered: Chroniques and Correspondance Inédite. After thoroughly researching the catalogued Schwob materials at BYU and comparing the contents to other Schwob publications, I found 72 previously unpublished letters. The majority of …

Go to article

Improving Liquid State Machines Through Iterative Refinement Of The Reservoir, R David Norton Mar 2008

Improving Liquid State Machines Through Iterative Refinement Of The Reservoir, R David Norton

Theses and Dissertations

Liquid State Machines (LSMs) exploit the power of recurrent spiking neural networks (SNNs) without training the SNN. Instead, a reservoir, or liquid, is randomly created which acts as a filter for a readout function. We develop three methods for iteratively refining a randomly generated liquid to create a more effective one. First, we apply Hebbian learning to LSMs by building the liquid with spike-time dependant plasticity (STDP) synapses. Second, we create an eligibility based reinforcement learning algorithm for synaptic development. Third, we apply principles of Hebbian learning and reinforcement learning to create a new algorithm called separation driven synaptic modification …

Go to article

Satisficing Theory And Non-Cooperative Games, Matthew S. Nokleby Mar 2008

Satisficing Theory And Non-Cooperative Games, Matthew S. Nokleby

Theses and Dissertations

Satisficing game theory is an alternative to traditional non-cooperative game theory which offers increased flexibility in modeling players' social interactions. However, satisficing players with conflicting attitudes may implement dysfunctional behaviors, leading to poor performance. In this thesis, we present two attempts to "bridge the gap" between satisficing and non-cooperative game theory. First, we present an evolutionary method by which players adapt their attitudes to increase raw payoff, allowing players to overcome dysfunction. We extend the Nash equilibrium concept to satisficing games, showing that the evolutionary method presented leads the players toward an equilibrium in their attitudes. Second, we introduce the …

Go to article

The Effects Of A Resveratrol Derivative On Regulatory Behaviors And Reproductive Health In Male And Female Long-Evans Rats, Kimberly Michelle Fabick Mar 2008

The Effects Of A Resveratrol Derivative On Regulatory Behaviors And Reproductive Health In Male And Female Long-Evans Rats, Kimberly Michelle Fabick

Theses and Dissertations

Phytoestrogens are chemicals produced by plants that act like estrogens and have the ability to bind to the mammalian estrogen receptor system. The purpose of this study is to evaluate a new phytoestrogen analog called 4-acetoxy Resveratrol. Resveratrol is a phytoestrogen that has been found in the skin of grapes. Resveratrol has been shown to be able to bind to the estrogen receptors and has a similar molecular structure as estradiol. Resveratrol has been shown to have many positive health benefits such as improving cardiovascular health, serving as a neuroprotective agent, acting as an anti-inflammatory agent, working as an anti-cancer …

Go to article

Accuracy Of Automated Analysis Of Language Samples From Persons With Deafness Or Hearing Impairment, Anne M. Hasting Mar 2008

Accuracy Of Automated Analysis Of Language Samples From Persons With Deafness Or Hearing Impairment, Anne M. Hasting

Theses and Dissertations

Developmental Sentence Scoring (DSS) and the Language Assessment, Remediation, and Screening Procedure (LARSP) are among the more common analyses for syntax and morphology, and automated versions of these analyses have been shown to be effective. This study measured the accuracy of automated DSS and LARSP on the written English output of six prelingually deaf young adults, ranging in age from 18 to 32 years. The samples were analyzed using the DSS and LARSP programs on Computerized Profiling; manual analysis was then performed on the samples. Point-by-point accuracy for DSS and for each level of LARSP was reported. Characteristics of the …

Go to article

Real-Time Forward Urban Environment Perception For An Autonomous Ground Vehicle Using Computer Vision And Lidar, Christopher Richard Greco Mar 2008

Real-Time Forward Urban Environment Perception For An Autonomous Ground Vehicle Using Computer Vision And Lidar, Christopher Richard Greco

Theses and Dissertations

The field of autonomous vehicle research is growing rapidly. The Congressional mandate for the military to use unmanned vehicles has, in large part, sparked this growth. In conjunction with this mandate, DARPA sponsored the Urban Challenge, a competition to create fully autonomous vehicles that can operate in urban settings. An extremely important feature of autonomous vehicles, especially in urban locations, is their ability to perceive their environment. The research presented in this thesis is directed toward providing an autonomous vehicle with real-time data that efficiently and compactly represents its forward environment as it navigates an urban area. The information extracted …

Go to article

Mechanisms By Which Apoptotic Membranes Become Susceptible To Secretory Phospholipase A2, Rachel Williams Bailey Mar 2008

Mechanisms By Which Apoptotic Membranes Become Susceptible To Secretory Phospholipase A2, Rachel Williams Bailey

Theses and Dissertations

During apoptosis, changes occur in T-lymphocyte membranes that render them susceptible to hydrolysis by secretory phospholipase A2 (sPLA2). To study the relevant mechanisms, a simplified model of apoptosis using a calcium ionophore was first applied. Kinetic and flow cytometry experiments provided key observations regarding ionophore treatment: initial hydrolysis rate was elevated, total reaction product was increased four-fold, and adsorption of the enzyme to the membrane surface was unaltered. Analysis of these results suggested that susceptibility during calcium-induced apoptosis is limited by substrate availability rather than enzyme adsorption. Fluorescence experiments identified three membrane alterations that might affect substrate access to the …

Go to article

The Effects Of Deep Brain Stimulation On The Speech Of Patients With Parkinson's Disease, Erin Suzanne Bjarnason Mar 2008

The Effects Of Deep Brain Stimulation On The Speech Of Patients With Parkinson's Disease, Erin Suzanne Bjarnason

Theses and Dissertations

Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has received more attention in recent years as a treatment option for regulating the symptoms of Parkinson's disease. Previous studies of DBS documented consistent improvements in motor function but more variability in speech outcomes. In the present study, six participants diagnosed with idiopathic Parkinson's disease who reported worsened speech with stimulation were recorded performing speech acoustic tasks with the stimulators on, and again with the stimulators off. Improvements were noted for most participants in measurements of formant slopes, long term average spectrum (LTAS) of a sustained vowel, and spirantization with stimulation …

Go to article

The Effects Of Prenatally Administered Phytoestrogens On The Reproductive And Behavioral Development Of Long-Evans Rats, Crystal Blake Mar 2008

The Effects Of Prenatally Administered Phytoestrogens On The Reproductive And Behavioral Development Of Long-Evans Rats, Crystal Blake

Theses and Dissertations

Equol is known to be a selective androgen modulator and has the ability to bind and inhibit 5-alpha dihydrotestosterone (5α-DHT). Equol is also a selective estrogen receptor modulator and is able to bind beta estrogen receptors with high affinity. As estrogen receptors are found in the hypothalamus, pituitary, and gonads, prenatally administered equol could affect the morphological and reproductive development of offspring. To test this hypothesis, during gestational days 14 to 20, forty-two pregnant Long-Evans rats were given one of six treatments: 1) no treatment, 2) injection with dimethyl sulfoxide (DMSO), 3) injection with 10 mg/kg equol, 4) injection with …

Go to article

Approximations With Improving Error Bounds For Makespan Minimization In Batch Manufacturing, Whitney Samuel Weyerman Mar 2008

Approximations With Improving Error Bounds For Makespan Minimization In Batch Manufacturing, Whitney Samuel Weyerman

Theses and Dissertations

Multipurpose batch manufacturing systems allow a suite of job types to be processed with a fixed set of machines. These types of systems are commonly found in chemical processing, as well as in computer systems and the service industry. In this thesis we consider the problem of sequencing jobs entering the manufacturing system in order to minimize makespan, or total time to complete processing of the jobs. We formulate this problem as a dynamic programming problem and illustrate the computational difficulty of solving this problem. We give a method for simulation of the system by representing each machine in the …

Go to article

The Effect Of Regional Dialect On The Validity And Reliability Of Word Recognition Scores, Jamie Ann Garlick Mar 2008

The Effect Of Regional Dialect On The Validity And Reliability Of Word Recognition Scores, Jamie Ann Garlick

Theses and Dissertations

The purpose of this study was to examine the effect of talker and listener dialect on the validity and reliability of word recognition scores from two sets of Mandarin speech audiometry materials. Four lists of bisyllabic words in Mainland Mandarin and Taiwan Mandarin dialects were administered to 16 participants of each dialect with normal hearing across two test sessions. The performance on materials presented in the native dialect was compared to performance on non-native dialect assessment to determine validity and reliability of test materials. Statistical analysis indicated significant differences between word recognition scores across test sessions, talker and listener dialect, …

Go to article

Transcendental Exchange: Alchemical Discourse In Romantic Philosophy And Literature, Elizabeth Olsen Brocious Mar 2008

Transcendental Exchange: Alchemical Discourse In Romantic Philosophy And Literature, Elizabeth Olsen Brocious

Theses and Dissertations

Alchemical imagery and ideology is present in many Romantic works of literature, but it has largely been overlooked by literary historians in their contextualization of the time period. The same can be said for mysticism in general, of which alchemy is a subset. This project accounts for alchemy in the works of transcendental philosophers and writers as it contributes to some of the most important conversations of the Romantic time period, particularly the reaction against empirical philosophy and the articulation of creative processes. The transcendental conversation is a transnational one, encompassing Germany, Britain, and America, with its use of alchemy …

Go to article

Sugar Nine: A Creative Thesis, Emily L. Dyer Mar 2008

Sugar Nine: A Creative Thesis, Emily L. Dyer

Theses and Dissertations

This collection of short stories explores the different ways women tolerate violence in exchange for some form of validation. The narratives focus on women and the reverberations of small moments which carry violent mass. While the violence occasionally includes physical elements, the collection is more concerned with the ways women accept emotional and psychological violence—specifically from men. Themes, motifs and symbols from the Clytie-Helios myth are threaded throughout the collection as well as a concern for space and touch, art and the creation of art, silence and voice. All of these elements involve control as the women characters in these …

Go to article

Event Related Potentials Of Syntactic Language Processing In Two Children With Specific Language Impairment: A Case Study, Melissa Ann Willes Mar 2008

Event Related Potentials Of Syntactic Language Processing In Two Children With Specific Language Impairment: A Case Study, Melissa Ann Willes

Theses and Dissertations

This study examined the electrophysiological activity of two children with Specific Language Impairment (SLI) and two aged-matched peers while listening to syntactically correct sentences versus syntactically incorrect sentences. The study specifically analyzed the N400 and P600 components. The N400 component is a negative wave occurring approximately 400 ms post-stimulus and is elicited by semantically incorrect stimuli. The P600 component is a positivity that occurs approximately 600 ms post-stimulus and reflects processing of syntactically incorrect stimuli. The participants in the study included a 7-year-old child and a 9-year-old child with SLI and two age-matched peers with typically developing language. Each participant …

Go to article

Similar But Different: The Complexities Of Students' Mathematical Identities, Diane Skillicorn Hill Mar 2008

Similar But Different: The Complexities Of Students' Mathematical Identities, Diane Skillicorn Hill

Theses and Dissertations

We, as a culture, tend to lump students into broad categories to describe their relationships with mathematics, such as ‘good at math’ or ‘hates math.’ This study focuses on five students each of whom could be considered ‘good at math,’ and shows how the beliefs that make up their mathematical identities are actually significantly different. The study examined eight beliefs that affect a student's motivation to do mathematics: confidence, anxiety, enjoyment of mathematics, skill level, usefulness of mathematics, what mathematics is, what it means to be good at mathematics, and how one learns mathematics. These five students' identities, which seemed …

Go to article

Evaluation Of The Applicability Of The Interactive Highway Safety Design Model To Safety Audit Of Two-Lane Rural Highways, Kaitlin Chuo Mar 2008

Evaluation Of The Applicability Of The Interactive Highway Safety Design Model To Safety Audit Of Two-Lane Rural Highways, Kaitlin Chuo

Theses and Dissertations

The Interactive Highway Safety Design Model (IHSDM) is a suite of software developed by the Federal Highway Administration (FHWA) for monitoring and analyzing two-lane rural highways in the United States. As IHSDM is a fairly "young" program a limited amount of research has been conducted to evaluate its practicability and reliability. To determine if IHSDM can be adopted into the engineering decision making process in Utah, a study was conducted under the supervision of the Utah Department of Transportation (UDOT) to evaluate its applicability to audit safety of two-lane rural highways in Utah. IHSDM consists of six modules: Policy Review …

Go to article

The Effect Of Non-Native Dialect On Speech Recognition Threshold For Native Mandarin Speakers, Nathan Edward Richardson Mar 2008

The Effect Of Non-Native Dialect On Speech Recognition Threshold For Native Mandarin Speakers, Nathan Edward Richardson

Theses and Dissertations

Speech recognition thresholds are used for several clinical purposes, so it is important that they be accurate reflections of hearing ability. Variations in the acoustic signal may artificially decrease threshold scores, and such variations can result from being tested in a second dialect. Thirty-two native Mandarin-speaking subjects (sixteen from mainland China and sixteen from Taiwan) participated in speech recognition threshold testing in both dialects to see whether using non-native dialect test materials resulted in a significantly lower score. In addition, tests were scored by two interpreters, one from each dialect, to see whether the scorer's dialect resulted in a significantly …

Go to article

Error Sensor Strategies For Active Noise Control And Active Acoustic Equalization In A Free Field, Ryan T. Chester Mar 2008

Error Sensor Strategies For Active Noise Control And Active Acoustic Equalization In A Free Field, Ryan T. Chester

Theses and Dissertations

Several measurements may be used as error signals to determine how to appropriately control a sound field. These include pressure, particle velocity, energy density and intensity. In this thesis, numerical models are used to show which signals perform best in is free-field active noise control (ANC) using error sensors located in the near field of the sound sources. The second is equalization in a free field and a semi-free field. Minimized energy density total power output (MEDToPO) plots are developed; these indicate the maximum achievable attenuation for a chosen error sensor as a function of location. A global listening area …

Go to article

Sooner Or Later? Parents' Marital Horizons For Their Emerging Adult Children, Chad D. Olson Mar 2008

Sooner Or Later? Parents' Marital Horizons For Their Emerging Adult Children, Chad D. Olson

Theses and Dissertations

Researchers have studied emerging adults' attitudes regarding the three components of the marital horizon theory, namely their desired age for marriage, the importance they place on marriage, and the criteria they endorse as necessary before being marriage ready. Up to this point, no studies have looked at parents' marital horizons nor have comparisons been made with their emerging adult children. The goal of this study was to determine parents' views regarding the three components of the marital horizon theory. Using hierarchal linear modeling, parents' responses were compared with their emerging adult children regarding ideal timing of marriage, marital importance, and …

Go to article

How Eighth-Grade Students Estimate With Fractions, Audrey Linford Hanks Mar 2008

How Eighth-Grade Students Estimate With Fractions, Audrey Linford Hanks

Theses and Dissertations

This study looked at what components are in student solutions to computational estimation problems involving fractions. Past computational estimation research has focused on strategies used for estimating with whole numbers and decimals while neglecting those used for fractions. An extensive literature review revealed one study specifically directed toward estimating with fractions (Hanson & Hogan, 2000) that researched adult estimation strategies and not children's strategies. Given the lack of research on estimation strategies that children use to estimate with fractions, this study used qualitative research methods to find which estimation components were in 10 eighth-grade students' solutions to estimation problems involving …

Go to article

Extending Web Application Development To The User-Editable Space, Brian S. Goodrich Mar 2008

Extending Web Application Development To The User-Editable Space, Brian S. Goodrich

Theses and Dissertations

The growth of the web increased dramatically when users were provided with applications that let them use just their browser to post and edit content on the World Wide Web. Offering users the ability to use their browser to create their own web applications, instead of just posting text and images, would cause another Internet evolution. This thesis describes the EXPPO system (Extensible Page Productions and Operations), a web application development environment for both end-users and technical-users. EXPPO leverages the end-user's previous experience with internet browsers by using a page based development experience or a Page Oriented Architecture. Because applications …

Go to article

Improving Performance Of The Filtered-X Least Mean Square Algorithm For Active Control Of Noise Contatining Multiple Quasi-Stationary Tones, Stephan P. Lovstedt Mar 2008

Improving Performance Of The Filtered-X Least Mean Square Algorithm For Active Control Of Noise Contatining Multiple Quasi-Stationary Tones, Stephan P. Lovstedt

Theses and Dissertations

The Filtered-X Least-Mean-Square (FXLMS) algorithm is widely used in active noise control due to its robustness, simplicity, and ability to be implemented in real time. In a feedforward implementation of the FXLMS algorithm, a reference signal that is highly correlated with the noise to be controlled is filtered with an estimate of the transfer function of the secondary path. The convergence characteristics of the FXLMS algorithm have been well studied. A convergence parameter is used to optimize the convergence of the algorithm. However, the optimal value for the convergence parameter is frequency dependent. Thus for noise containing multiple tones at …

Go to article

Cpg: Closed Pseudonymous Groups, Reed S. Abbott Mar 2008

Cpg: Closed Pseudonymous Groups, Reed S. Abbott

Theses and Dissertations

Internet users generally feel their actions are anonymous, but this is often not the case. Users can be tracked and their actions logged for future analysis, which is not the desire of most users. Software and services exist which offer anonymity on the Internet when used correctly. Anonymity on the Internet is useful for many people including whistleblowers, dissidents, law enforcement, and the security conscious, but it can be abused. A user can act maliciously under the guise of anonymity without the fear of retribution. Thus, a level of administrative control over users is desirable, even in an anonymous system. …

Go to article

Putting The Web Services Specifications To Rest, Dan R. Olsen Mar 2008

Putting The Web Services Specifications To Rest, Dan R. Olsen

Theses and Dissertations

Web services have become a useful and effective way of sharing information over the World Wide Web. SOAP has become a popular way of providing Web services and has been the focus of the Web Services specifications. The Web Services specifications provide additional capabilities to Web Services such as security and policy exchange. Another popular form of Web services includes light-weight Web or RESTful Web services over HTTP. These light-weight Web services are currently not addressed by the Web Services specifications. In order to provide the same capabilities to RESTful Web services, the Web Services specifications will be used to …

Go to article

Wind/Rain Backscatter Modeling And Wind/Rain Retrieval For Scatterometer And Synthetic Aperture Radar, Congling Nie Mar 2008

Wind/Rain Backscatter Modeling And Wind/Rain Retrieval For Scatterometer And Synthetic Aperture Radar, Congling Nie

Theses and Dissertations

Using co-located space-borne satellite (TRMM PR, ESCAT on ERS 1/2) measurements, and numerical predicted wind fields (ECMWF), the sensitivity of C-band backscatter measurement to rain is evaluated. It is demonstrated that C-band radar backscatter can be significantly altered by rain surface perturbation, an effect that has been previously neglected. A low-order wind/rain backscatter model is developed that has inputs of surface rain rate, incidence angle, wind speed, wind direction, and azimuth angle. The wind/rain backscatter model is accurate enough for describing the total backscatter in raining areas with relatively low variance. Rain has a more significant impact on measurements at …

Go to article

Skill Evaluation In Women's Volleyball, Lindsay Walker Florence Mar 2008

Skill Evaluation In Women's Volleyball, Lindsay Walker Florence

Theses and Dissertations

The Brigham Young University Women's Volleyball Team recorded and rated all skills (pass, set, attack, etc.) and recorded rally outcomes (point for BYU, rally continues, point for opponent) for the entire 2006 home volleyball season. Only sequences of events occurring on BYU's side of the net were considered. Events followed one of these general patterns: serve-outcome, pass-set-attack-outcome, or block-dig-set-attack-outcome. These sequences of events were assumed to be first-order Markov chains where the quality of each contact depended only explicitly on the quality of the previous contact but not on contacts further removed in the sequence. We represented these sequences in …

Go to article

The Conception Of Irony With Continual Reference To Kierkegaard: An Examination Of Ironic Play In Fear And Trembling, Julie Ann Parker Frederick Mar 2008

The Conception Of Irony With Continual Reference To Kierkegaard: An Examination Of Ironic Play In Fear And Trembling, Julie Ann Parker Frederick

Theses and Dissertations

This thesis studies the relationship of irony, as defined in Kierkegaard's The Concept of Irony to the text and subject of Fear and Trembling. Irony is interpreted in this thesis as negative space, which both binds and separates and which assumes meaning equal to or greater than the positive space that binds it. This definition applies to Kierkegaard's Socrates who lived ironically in the space between actuality and ideality. This thesis considers how Abraham also lived in ironic space and why ironic space is a prerequisite for faith. Unlike Socrates, Abraham did not stop with irony, but used irony to …

Go to article

A Bittorrent Proxy, Robert Brent Larsen Mar 2008

A Bittorrent Proxy, Robert Brent Larsen

Theses and Dissertations

BitTorrent is a peer-to-peer protocol useful for distributing large files over the Internet. Many organizations use BitTorrent to distribute their software in order to reduce client download time and reduce the load on their servers. While there is a lot of legitimate content available via BitTorrent, some organizations ban BitTorrent usage due to concerns over copyright infringement and the amount of bandwidth that peers can consume. A BitTorrent proxy will allow organizations to control those risks and allow its members to use the BitTorrent protocol for approved uses. It will allow the organization to control the files that are downloaded …

Go to article

Analysis Of The Psychometric Properties Of Two Different Concept-Map Assessment Tasks, Kenneth James Plummer Mar 2008

Analysis Of The Psychometric Properties Of Two Different Concept-Map Assessment Tasks, Kenneth James Plummer

Theses and Dissertations

The ability to make sense of a wide array of stimuli presupposes the human tendency to organize information in a meaningful way. Efforts to assess the degree to which students organize information meaningfully have been hampered by several factors including the idiosyncratic way in which individuals represent their knowledge either with words or visually. Concept maps have been used as tools by researchers and educators alike to assist students in understanding the conceptual interrelationships within a subject domain. One concept-map assessment in particular known as the construct-a-map task has shown great promise in facilitating reliable and valid inferences from student …

Go to article

Family Therapy And Childhood-Onset Schizophrenia: Pursuing Clinical And Bio/Psycho/Social Competence, Stanley D. Hall, Roy A. Bean Mar 2008

Family Therapy And Childhood-Onset Schizophrenia: Pursuing Clinical And Bio/Psycho/Social Competence, Stanley D. Hall, Roy A. Bean

Faculty Publications

Childhood-onset schizophrenia is perceived as more complicated because of its complexity, pervasive duration, and impact on individual and family functioning. Viewing the symptoms of childhood schizophrenia as creating a bio/psycho/social competence within which the therapist and family must interact may help contribute to treatment success. Competent family therapists working within this culture should be knowledgeable about the characteristics of childhood-onset schizophrenia, aware of their own biases towards psychosis, and skillful in its treatment. Guidelines are provided to help therapists identify their attitudes about schizophrenia and understand appropriate skills for treating the disorder.

Go to article

First Prev Next Last