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2012

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Application Of Linear Mixed-Effects Models To Crossover Designs., Lei Zhou Dec 2012

Application Of Linear Mixed-Effects Models To Crossover Designs., Lei Zhou

Electronic Theses and Dissertations

Crossover design is a type of longitudinal study with each subject receiving different treatments in different time periods. It has been used frequently in the pharmaceutical industry and other medical fields to investigate the safety and efficacy of new drugs or new treatments. For crossover studies, the treatment effects from the earlier period may be carried over to the later period, which is called the carry-over effect, the response may naturally change over different periods. How to assess treatment effect with accounting for all these features deserves further investigation. Linear mixed-effects (LME) model has been widely applied to analyze data …

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Self-Efficacy In The Context Of Psychological Abuse: A Model Of Efficacy Erosion., Kristen E. Hosey Dec 2012

Self-Efficacy In The Context Of Psychological Abuse: A Model Of Efficacy Erosion., Kristen E. Hosey

Electronic Theses and Dissertations

The current research proposed that psychological abuse within an intimate relationship erodes one's self-efficacy and aimed to demonstrate a negative relationship between past psychological abuse and how one reacts to a challenge. It was hypothesized that when faced with a challenging task past psychological abuse would be related to decreased task persistence, increased negative affect, and choosing low-difficulty future tasks. Each of these relationships would then be simultaneously mediated by general and specific self-efficacy. The study was conducted in two phases with undergraduate women. During the first phase participants self-reported demographic and relationship history information, level of general self-efficacy, and …

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Ready Child, Ready School : Educator Perceptions Of Child And School Success Indicators And Ready School Practices., Annette W. Bridges 1953- Dec 2012

Ready Child, Ready School : Educator Perceptions Of Child And School Success Indicators And Ready School Practices., Annette W. Bridges 1953-

Electronic Theses and Dissertations

In this study, the researcher considered educator perceptions of child readiness for school and school readiness for children conceptualized within the central constructs of the ready child and the ready school. The skills and abilities that children bring to the school are equally as important as the services and supports that the school brings to the child. The researcher’s intention in conducting this study was to investigate whether the differences existed in perceptions about ready child and ready school indicators and the implementation of ready school practices between educators working in successful schools and educators working in less successful schools. …

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Effect Of Rising Temperature Due To Ozone Depletion On The Dynamics Of A Prey-Predator System: A Mathematical Model, O. P. Misra, Preety Kalra Dec 2012

Effect Of Rising Temperature Due To Ozone Depletion On The Dynamics Of A Prey-Predator System: A Mathematical Model, O. P. Misra, Preety Kalra

Applications and Applied Mathematics: An International Journal (AAM)

It is well recognized that the greenhouse gas such as Chlorofluoro Carbon (CFC) is responsible directly or indirectly for the increase in the average global temperature of the Earth. The presence of CFC is responsible for the depletion of ozone concentration in the atmosphere due to which the heat accompanied with the sun rays are less absorbed causing increase in the atmospheric temperature of the Earth. The increase in the temperature level directly or indirectly affects the dynamics of interacting species systems. Therefore, in this paper a mathematical model is proposed and analyzed using stability theory to asses the effects …

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On The Geometrıc Interpretatıons Of The Kleın-Gordon Equatıon And Solution Of The Equation By Homotopy Perturbation Method, Hasan Bulut, H. M. Başkonuş Dec 2012

On The Geometrıc Interpretatıons Of The Kleın-Gordon Equatıon And Solution Of The Equation By Homotopy Perturbation Method, Hasan Bulut, H. M. Başkonuş

Applications and Applied Mathematics: An International Journal (AAM)

This paper is organized in the following ways: In the first part, we obtained the Klein Gordon Equation (KGE) in the Galilean space. In the second part, we applied Homotopy Perturbation Method (HPM) to this differential equation. In the third part, we gave two examples for the Klein Gordon equation. Finally, We compared the numerical results of this differential equation with their exact results. We also showed that approach used is easy and highly accurate.

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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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On The Numerical Solution Of Linear Fredholm-Volterra İntegro Differential Difference Equations With Piecewise İntervals, Mustafa Gülsu, Yalçın Öztürk Dec 2012

On The Numerical Solution Of Linear Fredholm-Volterra İntegro Differential Difference Equations With Piecewise İntervals, Mustafa Gülsu, Yalçın Öztürk

Applications and Applied Mathematics: An International Journal (AAM)

The numerical solution of a mixed linear integro delay differential-difference equation with piecewise interval is presented using the Chebyshev collocation method. The aim of this article is to present an efficient numerical procedure for solving a mixed linear integro delay differential difference equations. Our method depends mainly on a Chebyshev expansion approach. This method transforms a mixed linear integro delay differential-difference equations and the given conditions into a matrix equation which corresponds to a system of linear algebraic equation. The reliability and efficiency of the proposed scheme are demonstrated by some numerical experiments and performed on the computer algebraic system …

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Further Results On Fractional Calculus Of Saigo Operators, Praveen Agarwal Dec 2012

Further Results On Fractional Calculus Of Saigo Operators, Praveen Agarwal

Applications and Applied Mathematics: An International Journal (AAM)

A significantly large number of earlier works on the subject of fractional calculus give interesting account of the theory and applications of fractional calculus operators in many different areas of mathematical analysis (such as ordinary and partial differential equations, integral equations, special functions, summation of series, et cetera). The main object of the present paper is to study and develop the Saigo operators. First, we establish two results that give the image of the product of multivariable H-function and a general class of polynomials in Saigo operators. On account of the general nature of the Saigo operators, multivariable H-function and …

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An Approximate Analytical Algorithm For Solving The Multispecies Lotka-Volterra Equations, Abdolsaeed Alavi, Asghar Ghorbani Dec 2012

An Approximate Analytical Algorithm For Solving The Multispecies Lotka-Volterra Equations, Abdolsaeed Alavi, Asghar Ghorbani

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, a new efficient method called the parametric iteration method (PIM) is applied to accurately solve the multispecies Lotka–Volterra equations (MLVEs). Some cases of MLVEs are highlighted in order to show the simplicity and efficiency of the method. The results obtained in this work demonstrate that the present algorithm is a powerful analytic tool for the solution of MLVEs.

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Solution Of Fuzzy System Of Linear Equations With Polynomial Parametric Form, Diptiranjan Behera, S. Chakraverty Dec 2012

Solution Of Fuzzy System Of Linear Equations With Polynomial Parametric Form, Diptiranjan Behera, S. Chakraverty

Applications and Applied Mathematics: An International Journal (AAM)

This paper proposed two new and simple solution methods to solve a fuzzy system of linear equations having fuzzy coefficients and crisp variables using a polynomial parametric form of fuzzy numbers. Related theorems are stated and proved. The proposed methods are used to solve example problems. The results obtained are also compared with the known solutions and are found to be in good agreement.

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Study Of Reliability With Mixed Standby Components, M. A. El-Damcese, A. N. Helmy Dec 2012

Study Of Reliability With Mixed Standby Components, M. A. El-Damcese, A. N. Helmy

Applications and Applied Mathematics: An International Journal (AAM)

This paper deals with the reliability characteristics of two different series system configurations with mixed standby (include cold and warm standby) components. The failure rates of the primary and warm standby components are assumed to follow the Weibull distribution. The repair time distribution of each server is exponentially distributed. Moreover, we will derive the mean time-to-failure, and the steady-state availability for a special case of a serial system of two primary components, two warm standby components, and one cold standby component, when the failure and repair rate are constant.

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A Constructive Proof Of Fundamental Theory For Fuzzy Variable Linear Programming Problems, A. Ebrahimnejad Dec 2012

A Constructive Proof Of Fundamental Theory For Fuzzy Variable Linear Programming Problems, A. Ebrahimnejad

Applications and Applied Mathematics: An International Journal (AAM)

Two existing methods for solving fuzzy variable linear programming problems based on ranking functions are the fuzzy primal simplex method proposed by Mahdavi-Amiri et al. (2009) and the fuzzy dual simplex method proposed by Mahdavi-Amiri and Nasseri (2007). In this paper, we prove that in the absence of degeneracy these fuzzy methods stop in a finite number of iterations. Moreover, we generalize the fundamental theorem of linear programming in a crisp environment to a fuzzy one. Finally, we illustrate our proof using a numerical example.

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Modification Of Truncated Expansion Method For Solving Some Important Nonlinear Partial Differential Equations, N. Taghizadeh, M. Mirzazadeh Dec 2012

Modification Of Truncated Expansion Method For Solving Some Important Nonlinear Partial Differential Equations, N. Taghizadeh, M. Mirzazadeh

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, we implemented modification of truncated expansion method for the exact solutions of the Konopelchenko-Dubrovsky equation the (n+1)-dimensional combined sinhcosh- Gordon equation and the Maccari system. Modification of truncated expansion method is a powerful solution method for obtaining exact solutions of nonlinear evolution equations. This method presents a wider applicability for handling nonlinear wave equations.

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On Stability Of Dynamic Equations On Time Scales Via Dichotomic Maps, Veysel F. Hatipoğlu, Zeynep F. Koçak, Deniz Uçar Dec 2012

On Stability Of Dynamic Equations On Time Scales Via Dichotomic Maps, Veysel F. Hatipoğlu, Zeynep F. Koçak, Deniz Uçar

Applications and Applied Mathematics: An International Journal (AAM)

Dichotomic maps are used to check the stability of ordinary differential equations and difference equations. In this paper, this method is extended to dynamic equations on time scales; the stability and asymptotic stability to the trivial solution of the first order system of dynamic equations are examined using dichotomic and strictly dichotomic maps. This method, in dynamic equations, also involves Lyapunov’s direct method.

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Students In Differential Equations And Epidemiology Model A Campus Outbreak Of Ph1n1, Meredith L. Greer, Karen A. Palin Dec 2012

Students In Differential Equations And Epidemiology Model A Campus Outbreak Of Ph1n1, Meredith L. Greer, Karen A. Palin

All Faculty Scholarship

We describe a semester-long collaboration between a mathematics class and a biology class. Students worked together to understand and model the trajectory of the pandemic H1N1, pH1N1, outbreak across campus in fall 2009. Each course had about 30 students and was an upper-level elective for majors. Some mathematics students had taken no college-level biology, and some biology students had taken no college-level mathematics. All students had taken at least three quantitative courses, so they had some experience working with data. Our goals were to allow students to work with and model a real data set that affected them personally, to …

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The Morbidity & Mortality Of Prevalent Heart Failure, Jennifer Kwon Dec 2012

The Morbidity & Mortality Of Prevalent Heart Failure, Jennifer Kwon

Loma Linda University Electronic Theses, Dissertations & Projects

The first study population included 292 unselected consecutive patients from the LLUMC heart failure clinic who were enrolled in the study from January to July 2006 and were followed up through the end of December 2010. The treatment policy at the clinic was to uptitrate dosages of beta-adrenergic blockade (β-blockers), angiotensin-converting-enzyme inhibitors (ACEi) and angiotensin II receptor blockers (ARB) to the most tolerable levels in order to reach target dosages, as recommended by the Heart Failure Society of America (HFSA). Patients were classified into systolic heart failure (ejection fraction (EF) < 40%) or diastolic heart failure (EF≥40%). All dosages of β-blockers, ACEi and ARB were extracted through chart reviews and were used as the main predictors of the patients' survival. Results from analyses showed that reaching target dosages of β-blockers and ACEi/ARB may increase survival when compared to not reaching target among the systolic HF population (HRβ_biockers= 0.64, 95% CI 0.26-1.56 and HRACEi/ARB=0.50, …

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Performance Of Number Of Factors Procedures In Higher Order Analysis: A Comparative Study, Marc Thomas Porritt Dec 2012

Performance Of Number Of Factors Procedures In Higher Order Analysis: A Comparative Study, Marc Thomas Porritt

Loma Linda University Electronic Theses, Dissertations & Projects

Exploratory Factor Analysis (EFA) is one of the primary statistical tools available for the verification of the structure of a psychological measure. In the case of a nested test the structure of the higher levels is verified by performing EFA on the factor scores of the lower levels, a process known as higher order factor analysis (HOFA). One of the most significant decisions made during the EFA process is how many factors to extract. A number of methods have been developed to empirically answer this question. These methods have been proven highly accurate under normal circumstances. Since HOFA is an …

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Supporting Teachers' Use Of Nonfiction Text In The Primary Grades Classroom: One Practical Strategy, Renee Rice Moran Dec 2012

Supporting Teachers' Use Of Nonfiction Text In The Primary Grades Classroom: One Practical Strategy, Renee Rice Moran

ETSU Faculty Works

The purpose of this article is to argue for the benefits of using nonfiction text in the primary grades classroom. Readers are provided with a brief theoretical framework which outlines how nonfiction may increase achieve,emt, motivation, and interest for young students. Additionally, practical strategies are included for classroom teachers which work to frontload and support students in the act of processing nonfiction text as well as increase teachers' comfort level with the implementation of a nonfiction unit of study.

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Over The Camel's Hump, Brett Kingsley Dec 2012

Over The Camel's Hump, Brett Kingsley

The Synapse: Intercollegiate science magazine

No abstract provided.

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Issue 2 Dec 2012

Issue 2

The Synapse: Intercollegiate science magazine

No abstract provided.

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A Comprehensive Location-Allocation Method For Specialized Healthcare Services, Siddhartha S. Syam, Murray J. Côté Dec 2012

A Comprehensive Location-Allocation Method For Specialized Healthcare Services, Siddhartha S. Syam, Murray J. Côté

Management Faculty Research and Publications

This paper focuses on the development, solution, and application of a location-allocation model for specialized health care services such as the treatment and rehabilitation necessary for strokes or traumatic brain injuries. The model is based on our experience with the Department of Veterans Affairs’ integrated service networks. The model minimizes the total cost borne by the health system and its patients and incorporates admission acuity levels, service proportion requirements, and admission retention rates. A common resource constraint is introduced at the facility level since treatment of multiple acuity levels involves the pooling of common resources. Realistic instances of the model …

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Fem Simulation For Indot Temporary Concrete Anchored Barrier, Efe G. Kurt, Amit H. Varma, Sangdo Hong Dec 2012

Fem Simulation For Indot Temporary Concrete Anchored Barrier, Efe G. Kurt, Amit H. Varma, Sangdo Hong

JTRP Technical Reports

Portable Concrete Barriers (PCBs) are used to redirect errant vehicles to keep them passing to opposing lanes and to ensure safety of the people and any objects behind the barriers. In the state of Indiana, increments to the PCBs, such as L-Shape steel plates, have been applied to enhance the safety performance of these barriers. In this study, Finite Element (FE) analyses are performed to evaluate the safety performance of PCBs with and without the increments and get thorough information about the increments applied. A full-scale crash test (INDOT, 2001) was executed for an impact to the PCBs with a …

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Mi2Β Is Required For Γ-Globin Gene Silencing: Temporal Assembly Of A Gata-1-Fog-1-Mi2 Repressor Complex In Β-Yac Transgenic Mice, Flávia C. Costa, Halyna Fedosyuk, Allen M. Chazelle, Renee Y. Neades, Kenneth R. Peterson Dec 2012

Mi2Β Is Required For Γ-Globin Gene Silencing: Temporal Assembly Of A Gata-1-Fog-1-Mi2 Repressor Complex In Β-Yac Transgenic Mice, Flávia C. Costa, Halyna Fedosyuk, Allen M. Chazelle, Renee Y. Neades, Kenneth R. Peterson

Faculty and Staff Publications

Activation of γ-globin gene expression in adults is known to be therapeutic for sickle cell disease. Thus, it follows that the converse, alleviation of repression, would be equally effective, since the net result would be the same: an increase in fetal hemoglobin. A GATA-1-FOG-1-Mi2 repressor complex was recently demonstrated to be recruited to the -566 GATA motif of the Aγ-globin gene. We show that Mi2β is essential for γ-globin gene silencing using Mi2β conditional knockout β-YAC transgenic mice. In addition, increased expression of Aγ-globin was detected in adult blood from β-YAC transgenic mice containing a T>G HPFH point mutation …

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On The Interpretability Of Law: Lessons From The Decoding Of National Constitutions, James Melton, Zachary Elkins, Tom Ginsburg, Kalev Leetaru Dec 2012

On The Interpretability Of Law: Lessons From The Decoding Of National Constitutions, James Melton, Zachary Elkins, Tom Ginsburg, Kalev Leetaru

Coase-Sandor Institute for Law & Economics Research Paper Series

An implicit element of many theories of constitutional enforcement is the degree to which those subject to constitutional law can agree on what its provisions mean (call this constitutional interpretability). Unfortunately, there is little evidence on baseline levels of constitutional interpretability or the variance therein. This article seeks to fill this gap in the literature, by assessing the effect of contextual, textual and interpreter characteristics on the interpretability of constitutional documents. Constitutions are found to vary in their degree of interpretability. Surprisingly, however, the most important determinants of variance are not contextual (for example, era, language or culture), but textual. …

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Climate Change And The Spread Of Vector-Borne Infectious Diseases, Courtney B. Reed Dec 2012

Climate Change And The Spread Of Vector-Borne Infectious Diseases, Courtney B. Reed

Social Sciences

No abstract provided.

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Growing Home: Sacred Space And Contemporary Ecotopia, Andrew Goering Gingerich Dec 2012

Growing Home: Sacred Space And Contemporary Ecotopia, Andrew Goering Gingerich

Architecture and Planning ETDs

This thesis investigates the concept of ecocentrism and how an emerging ecocentric worldview might uniquely shape the built environment. This thesis is particularly interested in the role of sacred space in urban development, and how the notion of sacredness, unique to an ecocentric worldview, might affect various aspects of the built environment. These issues are explored in two basic parts. First, three basic worldviews are discussed\u2014the pre-modern worldview, the modern worldview, and the emerging ecocentric worldview--specifically on the topics of nature, space, and the city. Second, a qualitative research study of three ecotopian' communities is presented--Village Homes in Davis, CA; …

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Fault-Tolerant Wireless Sensor Networks Using Evolutionary Games, Ricardo Villalon Dec 2012

Fault-Tolerant Wireless Sensor Networks Using Evolutionary Games, Ricardo Villalon

Computer Science ETDs

This dissertation proposes an approach to creating robust communication systems in wireless sensor networks, inspired by biological and ecological systems, particularly by evolutionary game theory. In this approach, a virtual community of agents live inside the network nodes and carry out network functions. The agents use different strategies to execute their functions, and these strategies are tested and selected by playing evolutionary games. Over time, agents with the best strategies survive, while others die. The strategies and the game rules provide the network with an adaptive behavior that allows it to react to changes in environmental conditions by adapting and …

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A Multi-Institutional Project To Develop Discipline-Specific Data Literacy Instruction For Graduate Students, Sarah Wright, Michael Fosmire, Jon Jeffryes, Marianne Stowell Bracke, Brian Westra Dec 2012

A Multi-Institutional Project To Develop Discipline-Specific Data Literacy Instruction For Graduate Students, Sarah Wright, Michael Fosmire, Jon Jeffryes, Marianne Stowell Bracke, Brian Westra

Libraries Faculty and Staff Presentations

What data stewardship skills are needed by future scientists to fulfill their professional responsibilities and take advantage of opportunities in e-science? How can academic librarians contribute their expertise in information organization, dissemination and preservation to better serve modern science? With support from the Institute of Museum and Library Services (IMLS), four research libraries have formed a partnership to address these questions. The aims of the partnership are to identify the data stewardship skills, including data management and curation, needed by graduate students at the research discipline level, to identify trends that extend across the Science, Technology, Engineering, and Mathematics (STEM) …

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On The Cover Dec 2012

On The Cover

Sci-Tech News

No abstract provided.

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Division Officers And Boards Dec 2012

Division Officers And Boards

Sci-Tech News

No abstract provided.

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