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2012

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Community-Based Classification Of Noun Phrases In Twitter, Freddy Chong Tat Chua, William W. Cohen, Justin Betterridge, Ee-Peng Lim Dec 2012

Community-Based Classification Of Noun Phrases In Twitter, Freddy Chong Tat Chua, William W. Cohen, Justin Betterridge, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

Many event monitoring systems rely on counting known keywords in streaming text data to detect sudden spikes in frequency. But the dynamic and conversational nature of Twitter makes it hard to select known keywords for monitoring. Here we consider a method of automatically finding noun phrases (NPs) as keywords for event monitoring in Twitter. Finding NPs has two aspects, identifying the boundaries for the subsequence of words which represent the NP, and classifying the NP to a specific broad category such as politics, sports, etc. To classify an NP, we define the feature vector for the NP using not just …

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An Automated Pathological Class Level Annotation System For Volumetric Brain Images, Thien Anh Dinh, Tomi Silander, C. C. Tchoyoson Lim, Tze-Yun Leong Dec 2012

An Automated Pathological Class Level Annotation System For Volumetric Brain Images, Thien Anh Dinh, Tomi Silander, C. C. Tchoyoson Lim, Tze-Yun Leong

Research Collection School Of Computing and Information Systems

We introduce an automated, pathological class level annotation system for medical volumetric brain images. While much of the earlier work has mainly focused on annotating regions of interest in medical images, our system does not require annotated region level training data nor assumes perfect segmentation results for the regions of interest; the time and effort needed for acquiring training data are hence significantly reduced. This capability of handling high-dimensional noisy data, however, poses additional technical challenges, since statistical estimation of models for such data is prone to over-fitting. We propose a framework that combines a regularized logistic regression method and …

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4th Asian Preventive Cardiology And Cardiac Rehabilitation Conference Dec 2012

4th Asian Preventive Cardiology And Cardiac Rehabilitation Conference

Journal of the Hong Kong College of Cardiology

No abstract provided.

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Grand Theft Auto Loans: Repossession And Demographic Realities In Title Lending, Nathalie Martin Dec 2012

Grand Theft Auto Loans: Repossession And Demographic Realities In Title Lending, Nathalie Martin

Faculty Scholarship

This Article analyzes empirical data on one of America's fastest growing credit products, the title loan. A title loan is a high-interest, deeply oversecured, consumer loan, in which the consumer uses an unencumbered automobile as collateral for a non-purchase money loan. Title loans are made based solely on equity in a car. If a customer has insufficient income to pay the payments under the loan, typically interest-only payments at 300% per annum or more, the lender repossesses the vehicle, many of which have GPS trackers installed for this purpose. Not surprisingly, the repossession rates for title loans are higher than …

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Conservation Genetics Of A Spotted Salamander (Ambystoma Maculatum (Shaw 1802)) Local Population In Southeast Tennessee, Daniel Scott Armstrong Dec 2012

Conservation Genetics Of A Spotted Salamander (Ambystoma Maculatum (Shaw 1802)) Local Population In Southeast Tennessee, Daniel Scott Armstrong

Masters Theses and Doctoral Dissertations

Currently there is a worldwide amphibian decline with numerous causes. Because of this, it is important to understand how genetic variation in local amphibian populations is affected by disturbance. The goal of this study was to assess the genetic impacts of past chemical and ammunition storage and present industrialization on a local population of Ambystoma maculatum (Shaw 1802) using thirteen microsatellite markers. Most loci exhibited no loss of heterozygosity but the low effective population size may indicate vulnerability to future declines. No population substructure or sex-biased dispersal was detected. Possible explanations for the reduction in genetic diversity at four loci …

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The Unstructured Grid Incompressible Navier-Stokes Algorithm For Convective Heat Transfer Based On Artificial Compressibility, Jessica Elaine Kress Dec 2012

The Unstructured Grid Incompressible Navier-Stokes Algorithm For Convective Heat Transfer Based On Artificial Compressibility, Jessica Elaine Kress

Masters Theses and Doctoral Dissertations

The development of an explicit unstructured grid finite-volume scheme for solving the full incompressible Navier-Stokes equations along with the energy equation in a strongly coupled manner is presented. The Boussinesq approximation is utilized to account for thermal buoyancy. The method of artificial compressibilty is used to solve the resulting equations in a time marching fashion. Roe's approximate Riemann solver is used for the construction of the numerical flux. An eigensystem is derived for the flux Jacobian matrix, which is used in the evaluation of the numerical flux and the characteristic variable boundary conditions. The resulting algorithm is validated by simulating …

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Positive And Neutral Mood Inductions: Ties To Creativity, Kaylan Stephanie Wilson Dec 2012

Positive And Neutral Mood Inductions: Ties To Creativity, Kaylan Stephanie Wilson

Masters Theses and Doctoral Dissertations

Positive mood may broaden cognition, allowing for an increase in creativity. This study tested whether creativity could be increased when positive mood and creativity were induced through verbal instructions that direct ed participants to revisit memories that depicted positive mood and/or creative moments. This experiment had a 2(mood induction positive/neutral) X 2(creativity induction yes/no) design, and 112 participants in four condi tions: 22 in the first, 33 in the second, 25 in the third, and 32 in the fourth. Mood and creativity inductions were autobiographical, as this method is the most effective technique for inducing mood. Scales used were the …

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The Use Of Video Modeling To Facilitate Compliance And Social Skills With A Special Education Preschool Group, Christian Lauren Ware Dec 2012

The Use Of Video Modeling To Facilitate Compliance And Social Skills With A Special Education Preschool Group, Christian Lauren Ware

Masters Theses and Doctoral Dissertations

This study’s purpose was to identify the effects of video modeling in a group, using the target behaviors of appropriate play and independent cleaning. The participants within the study were a group of preschool special education students. The disabilities and behaviors represented within the group varied. This study was an action research study with an A-B-A design. Data were recorded to obtain the frequency of redirection needed during playing and cleaning, the duration of playing and cleaning, and the number of independent cleaners. The quantitative data were analyzed through the graphical representation of the data. Anecdotal observations were analyzed to …

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Exploration Of The Effectiveness Of Apple Ios Devices And Bluetooth Low-Energy Nodes In The Evaulation Of Stroke Patient Rehabilitation And Recovery, Robert Derveloy Dec 2012

Exploration Of The Effectiveness Of Apple Ios Devices And Bluetooth Low-Energy Nodes In The Evaulation Of Stroke Patient Rehabilitation And Recovery, Robert Derveloy

Masters Theses and Doctoral Dissertations

The goal of this study is to help establish a foundation for cost effective stroke patient telerehabilitation by examining the efficacy of off-the-shelf consumer motion sensors. This paper examines the practical implications of utilizing Apple iOS mobile devices and Variable Technology KORE NODE devices in the evaluation of stroke patient recovery. Several algorithms are proposed to handle the user positioning and cheating detection requirements of the Functional Reach Test (FRT), efficient scoring of the National Institutes of Health Stroke Scale (NIHSS) motor arm exams, and real-time fall detection monitoring.

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Information Needs Of The Rural Farmers : A Study From Maharashtra, India: A Survey, Nitin Bhagachand Bachhav Dec 2012

Information Needs Of The Rural Farmers : A Study From Maharashtra, India: A Survey, Nitin Bhagachand Bachhav

Library Philosophy and Practice (e-journal)

Nowadays, information is a basic necessity of everyday life. For anything and everything information is required. Information can be obtained or retrieved from a variety of sources. Farmers constitute a particular group of users whose information needs is very specific. The present paper deals with the information needs of the farmer community in rural areas. The study conducted through survey method and reveals that 71 (40.58%) farmers requires daily information for various agriculture work. It is also found that the first preferred sources of the information of the farmers is colleague or fellow farmers following by newspapers and Government office.

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Performance Evaluation Of Video Streaming In An Infrastructure Mesh Based Vehicle Network, Sajindra Pradhananga Dec 2012

Performance Evaluation Of Video Streaming In An Infrastructure Mesh Based Vehicle Network, Sajindra Pradhananga

All Theses

Most next-generation wireless networks are expected to support video stream-
ing which constitutes the bulk of traffic on the Internet. This thesis evaluates the
performance of video streaming in a vehicle network with an infrastructure wireless
mesh network (WMN) backhaul. Several studies have investigated video quality per-
formance primarily in single hop wireless networks and static WMNs. This thesis is
based on those studies and conducts the study in relation to a network where the
multi-hop features of the mesh network and mobility of the streaming clients may
have substantial impact on the perceived video quality in the network.
The …

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Determination Of A Higher-Order Elastic Constant Of A Single Filament Of Hextow Im7-12k Carbon Fiber Using Finite Deformations, Luciana Oliveira Dec 2012

Determination Of A Higher-Order Elastic Constant Of A Single Filament Of Hextow Im7-12k Carbon Fiber Using Finite Deformations, Luciana Oliveira

All Theses

The modulus of elasticity of a homogeneous body is the same for all directions. No known crystalline materials have a Young's modulus that is the same in all directions. The linear theory of elasticity states that strain is proportional to stress so that a straight line is obtained in a stress versus strain plot. As long as the forces applied to the body are proportional, the body behaves perfectly elastically, obeying Hooke's law. At high enough strains, however, deviations from Hooke's law will occur. Nonlinear elasticity is generally apparent when large deformations are applied and usually when the sample size …

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Examining The Short-Run Price Elasticity Of Gasoline Demand In The United States, Michael Brannan Dec 2012

Examining The Short-Run Price Elasticity Of Gasoline Demand In The United States, Michael Brannan

All Theses

Estimating the consumer demand response to changes in the price of gasoline has important implications regarding fuel tax policies and environmental concerns. There are reasons to believe that the short-run price elasticity of gasoline demand fluctuates due to changing structural and behavioral factors. In this paper I estimate the short-run price elasticity of gasoline demand in two time periods, from 2001 to 2006 and from 2007 to 2010. This study utilizes data at both the national and state levels to produce estimates. The short-run price elasticities range from -0.034 to -0.047 during 2001 to 2006, compared to -0.058 to -0.077 …

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Using The Greet Model To Analyze Algae As A Feedstock For Biodiesel Production, Christopher Tatum Dec 2012

Using The Greet Model To Analyze Algae As A Feedstock For Biodiesel Production, Christopher Tatum

Masters Theses and Doctoral Dissertations

There is a growing interest in renewable, carbon-neutral biofuels such as ethanol and biodiesel. A life-cycle analysis is conducted in this study to determine the viability of using algae as a feedstock for biodiesel. The method involves assessing energy use, fossil fuel use, greenhouse gas emissions, and criteria pollutant emissions using a simulation developed by Argonne National Laboratory. The energy and emissions of algae-derived biodiesel are compared to those of soybean biodiesel, corn ethanol, conventional gasoline, and low-sulfur diesel. Results show that there are sizeable greenhouse gas emission benefits attributed to the production of both types of biodiesel as compared …

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Quantified H I Morphology : Vi. The Morphology Of Extended Discs In Uv And H I., Benne W. Holwerda, N. Pirzkal, J. S. Heiner Dec 2012

Quantified H I Morphology : Vi. The Morphology Of Extended Discs In Uv And H I., Benne W. Holwerda, N. Pirzkal, J. S. Heiner

Faculty and Staff Scholarship

Extended ultraviolet (XUV) discs have been found in a substantial fraction of late-type – S0, spiral and irregular – galaxies. Similarly, most late-type spirals have an extended gas disc, observable in the 21-cm radio line (H i). The morphology of galaxies can be quantified well using a series of scale-invariant parameters; concentration-asymmetry-smoothness (CAS), Gini, M20, and GM parameters. In this series of papers, we apply these to H i column density maps to identify mergers and interactions, lopsidedness and now XUV discs. In this paper, we compare the quantified morphology and effective radius (R50) of the Westerbork observations of neutral …

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The Brightest Of Reionizing Galaxies Survey : Constraints On The Bright End Of The Z ~ 8 Luminosity Function., L. D. Bradley, M. Trenti, P. A. Oesch, M. Stiavelli, T. Treu, R. J. Bouwens, J. M. Shull, Benne W. Holwerda, N. Pirzkal Dec 2012

The Brightest Of Reionizing Galaxies Survey : Constraints On The Bright End Of The Z ~ 8 Luminosity Function., L. D. Bradley, M. Trenti, P. A. Oesch, M. Stiavelli, T. Treu, R. J. Bouwens, J. M. Shull, Benne W. Holwerda, N. Pirzkal

Faculty and Staff Scholarship

We report the discovery of 33 Lyman-break galaxy candidates at z ∼ 8 detected in Hubble Space Telescope Wide Field Camera 3 (WFC3) imaging as part of the Brightest of Reionizing Galaxies (BoRG) pure-parallel survey. The ongoing BoRG survey currently has the largest area (274 arcmin2) with Y098 (or Y105), J125, and H160 band coverage needed to search for z ∼ 8 galaxies, about three times the current CANDELS area, and slightly larger than what will be the final CANDELS wide component with Y105 data (required to select z ∼ 8 sources). Our sample of 33 relatively bright Y098-dropout galaxies …

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Attributions For Interpersonal Healthcare Mistreatment And Continuity Of Care, Daniel Joel Northington Dec 2012

Attributions For Interpersonal Healthcare Mistreatment And Continuity Of Care, Daniel Joel Northington

Loma Linda University Electronic Theses, Dissertations & Projects

Although continuity of cancer-related care increases the use of early detection cancer screening exams (Doescher, Saver, Fiscella, & Franks, 2004), and thereby improves treatment outcomes (Mandelblatt et al., 2009), Latino (Latina) women in the U.S. currently report lower continuity of care than non-Latino White (Anglo) women (American Cancer Society, 2010; Doescher, Saver, Fiscella, & Franks, 2001). Such disparities may be due, in part, to interpersonal healthcare mistreatment (Smedley, Stith, & Nelson, 2003), as well as mistreatment-related attributions and emotions (Betancourt, Flynn, & Ormseth, 2011; Tucker, 2008). Therefore, according to Weiner's model of attribution and emotion (1986) as well as Betancourt's …

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Judicial Innovation And Sexual Harassment Doctrine In The U.S. Court Of Appeals., Laura P. Moyer, Holley Takersley Dec 2012

Judicial Innovation And Sexual Harassment Doctrine In The U.S. Court Of Appeals., Laura P. Moyer, Holley Takersley

Faculty and Staff Scholarship

The determination that sexual harassment constituted “discrimination based on sex” under Title VII was first made by the lower federal courts, not Congress. Drawing from the literature on policy diffusion, this article examines the adoption of hostile work environment standards across the U.S. Courts of Appeals in the absence of controlling Supreme Court precedent. The results bolster recent findings about the influence of female judges on their male colleagues and suggest that in addition to siding with female plaintiffs, female judges also helped to shape legal rules that promoted gender equality in the workplace.

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Grm7 Variants Associated With Age-Related Hearing Loss Based On Auditory Perception, Dina L. Newman, Laurel M. Fisher, Jeffrey Ohmen, Robert Parody, Chin-To Fong, Susan T. Frisina, Frances Mapes, David A. Eddins, Robert D. Frisina, Rick A. Friedman Dec 2012

Grm7 Variants Associated With Age-Related Hearing Loss Based On Auditory Perception, Dina L. Newman, Laurel M. Fisher, Jeffrey Ohmen, Robert Parody, Chin-To Fong, Susan T. Frisina, Frances Mapes, David A. Eddins, Robert D. Frisina, Rick A. Friedman

Articles

Age-related hearing impairment (ARHI), or presbycusis, is a common condition of the elderly that results in significant communication difficulties in daily life. Clinically, it has been defined as a progressive loss of sensitivity to sound, starting at the high frequencies, inability to understand speech, lengthening of the minimum discernable temporal gap in sounds, and a decrease in the ability to filter out background noise. The causes of presbycusis are likely a combination of environmental and genetic factors. Previous research into the genetics of presbycusis has focused solely on hearing as measured by pure-tone thresholds. A few loci have been identified, …

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Safe: Simulation Automation Framework For Experiments, Luiz Felipe Perrone, Bryan C. Ward, Christopher S. Main Dec 2012

Safe: Simulation Automation Framework For Experiments, Luiz Felipe Perrone, Bryan C. Ward, Christopher S. Main

Faculty Journal Articles

The workflow of a network simulation study requires adherence to best practices in methodology so that results are credible and reproducible by third parties. The opportunities for one to introduce errors start at model description and permeate the process through to the reporting of results. The literature indicates that even publications in respected venues include inadvertent mistakes and poor application of methodology. When experts are liable to fail, it is unreasonable to expect that students would fare any better. This paper presents a system designed to provide guidance for inexperienced users of the popular ns-3 network simulator. SAFE automates the …

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Cortical Thickness In Neuropsychologically Near-Normal Schizophrenia, Derin J. Cobia, John G. Csernansky, Lei Wang Dec 2012

Cortical Thickness In Neuropsychologically Near-Normal Schizophrenia, Derin J. Cobia, John G. Csernansky, Lei Wang

Faculty Publications

Schizophrenia is a chronic and potentially disabling disorder with widespread neuroanatomical abnormalities thought to be caused by progressive brain changes (Andreasen, 2010), and an equally wide variety of impairments in cognitive functioning (Palmer et al., 2009). In general, individuals with schizophrenia demonstrate significantly impaired performance on a full range of neuropsychological tasks, often reaching greater than one standard deviation below the norm (Dickinson et al., 2007). One particularly puzzling issue is that approximately 15–30% of schizophrenia patients have been found to perform in the normal range of neuropsychological functioning (Kremen et al., 2000; Palmer et al., 1997). Given hypothesized relationships …

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Learning Visual Features For The Avatar Captcha Recognition Challenge, Mohammed Korayem, Abdallah A. Mohamed, David Crandall, Roman Yampolskiy Dec 2012

Learning Visual Features For The Avatar Captcha Recognition Challenge, Mohammed Korayem, Abdallah A. Mohamed, David Crandall, Roman Yampolskiy

Faculty and Staff Scholarship

Captchas are frequently used on the modern world wide web to differentiate human users from automated bots by giving tests that are easy for humans to answer but difficult or impossible for algorithms. As artificial intelligence algorithms have improved, new types of Captchas have had to be developed. Recent work has proposed a new system called Avatar Captcha, in which a user is asked to distinguish between facial images of real humans and those of avatars generated by computer graphics. This novel system has been proposed on the assumption that this Captcha is very difficult for computers to break. In …

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Energy Conserving Privacy Enhancing Algorithms For Resource-Constrained Devices, Michael Groat Dec 2012

Energy Conserving Privacy Enhancing Algorithms For Resource-Constrained Devices, Michael Groat

Computer Science ETDs

Resource-constrained devices such as wireless sensor networks, body area networks, or smart phones collect confidential and sensitive information about their users. Traditional solutions to protect these data, such as encryption, consume a significant amount of resources to be viable. In this dissertation, I present two energy efficient information collection protocols based on the notion that by relaxing the definition of privacy, such as using indistinguishability, energy use can be reduced. The first protocol, multi-dimensional negative surveys (MDNSs), protects multivariate categorical data by perturbing sensed values to something other than what was actually sensed, and transmits the perturbed values to a …

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Multivalent Random Walkers:A Computational Model Of Superdiffusive Transport At The Nanoscale, Mark Joseph Olah Dec 2012

Multivalent Random Walkers:A Computational Model Of Superdiffusive Transport At The Nanoscale, Mark Joseph Olah

Computer Science ETDs

We present a stochastic model and numerical simulation framework for a synthetic nanoscale walker that can be used to transport materials and information at superdiffusive rates in artificial molecular systems. Our \emph{multivalent random walker} model describes the motion of a walker with a rigid, inert body and flexible, enzymatic legs. A leg can bind to and irreversibly modify surface-bound chemical substrate sites arranged as nanoscale tracks. As the legs attach to, modify, and detach from the sites, the walker moves along these tracks. Walkers are symmetrical and the tracks they walk on are unoriented, yet we show that under appropriate …

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Numerical Studies For Solving Fractional Riccati Differential Equation, N. H. Sweilam, M. M. Khader, A. M. S. Mahdy Dec 2012

Numerical Studies For Solving Fractional Riccati Differential Equation, N. H. Sweilam, M. M. Khader, A. M. S. Mahdy

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, finite difference method (FDM) and Pade'-variational iteration method (Pade'- VIM) are successfully implemented for solving the nonlinear fractional Riccati differential equation. The fractional derivative is described in the Caputo sense. The existence and the uniqueness of the proposed problem are given. The resulting nonlinear system of algebraic equations from FDM is solved by using Newton iteration method; moreover the condition of convergence is verified. The convergence's domain of the solution is improved and enlarged by Pade'-VIM technique. The results obtained by using FDM is compared with Pade'-VIM. It should be noted that the Pade'-VIM is preferable because …

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The Value Of Public Relations: Measuring The Success Of Facebook, Twitter, And Youtube In Corporate Companies, Justine Gananian Nov 2012

The Value Of Public Relations: Measuring The Success Of Facebook, Twitter, And Youtube In Corporate Companies, Justine Gananian

Journalism

This paper is a combination of research and data from three experts who were interviewed about the value of social in a corporate company, specifically Facebook, Twitter, and YouTube. Social media’s presence has increased at an exponential pace in the past five years, and consumers are constantly looking to access new information. It has become a useful tool for both internal and external communication within a company. As research shows, “[companies] are revamping and modernizing their print publications, starting radio and video shows, using social media to foster two-way communication, using the new multimedia tools to reach new audiences, telling …

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California Supreme Court Survey -- A Review Of Decisions: April 1989-June1989, Charles R. Eskridge Iii Nov 2012

California Supreme Court Survey -- A Review Of Decisions: April 1989-June1989, Charles R. Eskridge Iii

Pepperdine Law Review

No abstract provided.

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A First Amendment Right Of Access To A Juror's Identity: Toward A Fuller Understanding Of The Jury's Deliberative Process , Robert Lloyd Raskopf Nov 2012

A First Amendment Right Of Access To A Juror's Identity: Toward A Fuller Understanding Of The Jury's Deliberative Process , Robert Lloyd Raskopf

Pepperdine Law Review

No abstract provided.

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Boland In The Wind: The Iran-Contra Affair And The Invitation To Struggle , Bretton G. Sciaroni Nov 2012

Boland In The Wind: The Iran-Contra Affair And The Invitation To Struggle , Bretton G. Sciaroni

Pepperdine Law Review

No abstract provided.

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Standing To Sue A Carrier's Killers , Davis J. Howard Nov 2012

Standing To Sue A Carrier's Killers , Davis J. Howard

Pepperdine Law Review

No abstract provided.

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