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Towards More Reliable Extrapolation Algorithms With Applications To Organic Chemistry, Jaime Nava

Open Access Theses & Dissertations

One of the main objectives of science and engineering is to predict the results of different situations. For example, in Newton's mechanics, we want to predict the positions and velocities of different objects (e.g., planets) at future moments of time.

In this Thesis, as a case study, we take the problem of predicting the properties of new chemical substances. One of the main objectives of chemistry is to design new molecules (and, more generally, new chemical compounds) which are useful for various practical tasks. New substances have already resulted in new materials for buildings and for spaceships, new explosives and …

The Isotopological Homodesmotic Reaction: A Further Refinement To The Quantification Of Aromaticity, Marco Olguin

Open Access Theses & Dissertations

Aromaticity imparts a significant energetic stabilization to various chemical systems as a result of cyclic pi-electron delocalization. One of the most widely used methods for the quantification of the Aromatic Stabilization Energy (ASE) of a molecule is the formulation of a Homodesmotic reaction. The following research employs a refined Homodesmotic approach based on previous work by Herndon and Mills which utilized Isotopological Homodesmotic Reactions (IHR) to determine the Aromatic Stabilization Energy (ASE) of a flourenyl cation. The advantage of employing an IHR for an ASE calculation is that the strain energy contribution from the sigma framework of reactant and product …

Assessment Of Super-Resolution For Face Recognition From Very-Low Resoution Images, James Roger Roeder

Open Access Theses & Dissertations

Super-Resolution (SR) involves the registration of multiple images/frames and reconstruction of a single higher resolution image. The goal of this research is to use multiple, very-low resolution images, such as those produced from a video sequence in a wireless sensor network system, as input to the super-resolution process in a face recognition system. The algorithm used for face recognition is the Fisherfaces method with a nearest neighbor classifier used for the recognition decision. Super-resolution consists of two stages, a registration stage and a reconstruction stage.

The testing images were segmented using a simple skin color detection approach. After the cropping, …

In Defense Of The Value Of Visual Arts In Public Education:An Examination Of Scholarly Arguments For Functionary Pedagogy And Intrinsic Fulfillment, Monica Lynn Seymore

Open Access Theses & Dissertations

A descriptive study sought to find answers to an ongoing dichotomous argument about Visual Arts education in public schools: should Visual Arts function in support of core academic courses or should Visual Arts be taught primarily for their intrinsic value? Multiple sources as well as personal experience teaching art have influenced and contributed to resultant opinion in this study . Two main arguments clarified in detail and delineated in points of their disparate issues, function to defend visual arts in public schools. Conclusion maintain that arguments and support of the intrinsic values students experience through visual arts.

Computational Modeling Studies Of The Structures And Properties Of Organotin(Iv) And Stannyl-Thioether Systems With Comparisons To X-Ray Crystallography, Michelle R. Stem Joseph

Open Access Theses & Dissertations

Controlling the toxic effects of organotin(IV) compounds involves engineering the structure of the molecules to optimize their properties. Molecular engineering, coupled with improved capabilities to generate reliable computational optimization models (COMs), will enable researchers to have greater success at harnessing the highly specific cytotoxicity of organotins. For example, as the thio_n ligand phenyl groups were replaced with Cl atoms, the S-Sn intramolecularity was strengthened, the bond distance decreased, and the stannyl tetrahedral structure was deformed from its triphenyl conformation. With each substitution, conformation deformations lowered the damaging bioactivity levels of thio_n. Bonding various ligands to organotin(IV) compounds …

Studies Of Prompt Gamma And Neutron Yield Due To 2.5 Mev Neutrons Using Geant4, Jesus Felipe Tovar

Open Access Theses & Dissertations

In the present work the software GEANT4, a particle transport toolkit based on the Monte Carlo method, developed mostly by CERN, but also by other institutions and universities. GEANT4 is here used to simulate the dispersive effects that 2.5 MeV neutrons undergo after interacting with different elements. This study has the main interest of identifying spectral signatures, that is the type and number of particles yielded after neutron bombardment of special nuclear material under various shielding conditions. Shielding is composed of various attenuating materials with simple geometrical configurations, that can evolve into more intricate geometries through Boolean operations, enclosing a …

Remote Control Of Multiple Robots: A Wireless Sensor Network And Virtual Reality Approach, Yingjun Zhu

Open Access Theses & Dissertations

A tele-operation system of robots based on virtual reality and WSN is established and demonstrated. Pro/E, Blender 3D and Python language are adopted to build up and carry out the virtual environment and virtual robot. Wireless Sensor Network (WSN) technology has been used to achieve the tele-operation function. The WSN enables the users to control the robots and collect the data/status from the robots as well. Robot virtual reality software has been developed and presented in the paper. The network setup and the control/communication Application Programming Interface (API) has been shown in this paper.

Verification Of Nyslab A Software For The Analysis Of Jointed Pavements, Maryam Limouee

Open Access Theses & Dissertations

A significant amount of research and development has been conducted for decades to provide a tool for the design and analysis of jointed slabs on different types of foundations. ILLI-SLAB, JSLAB, EverFE and ISLAB are the most used finite element modeling (FEM) codes that have gone through several iterations of improvement. JSLAB has been maintained by the Federal Highway Administration (FHWA) and is distributed free of charge and there is significant interest in further improving the capabilities of that software package.

Researchers at the University of Texas at El Paso have been charged to implement several modifications in the latest …

Supporting Teacher Education Through A Combined Model Of Philosophical, Collaborative And Experiential Learning, Roisin Donnelly

Journal Articles

This paper provides insights into teaching and learning based on the analysis of an accredited professional development program, entitled the Postgraduate Certificate in Third Level Learning and Teaching, aimed at lecturing staff/faculty in Irish higher education. The program has its theoretical basis in the Kolb Experiential Learning Cycle (Kolb, 1983), combined with principles of collaborative learning and a philosophical understanding of teaching in higher education. An action research study was conducted to investigate the lecturers’ perceptions of the program, with a particular focus on how support could be provided to them through a combined model of learning. As a core …

Earth Field Magnetic Resonance Imaging And Paramagnetic Contrast Agents, Saideh Sadat Mortazavi

Open Access Theses & Dissertations

The goal of this research was to visualize the uptake of copper by plants to aid phyto-remediation research. The hypothesis was that regions of the plant with more copper will have an enhanced NMR signal using copper as a paramagnetic contrast agent.

As the name implies, Earth Field Magnetic Resonance Imaging (EFMRI) spectrometry uses a magnetic field 300,000 times weaker than a 600 MHz Nuclear Magnetic Resonance (NMR) spectrometer. Just like in conventional human MRI, this portable instrument is capable of recording one, two and three dimensional images though the sample size is much smaller.

The enhancement of signal was …

Improving Throughput Of Simultaneous Multithreaded (Smt) Processors Using Shareable Resource Signatures And Hardware Thread Priorities, Mitesh Ramesh Meswani

Open Access Theses & Dissertations

Simultaneous multithreading (SMT) allows multiple hardware threads to execute concurrently on a processor core, potentially increasing the utilization and throughput of the processor core by a factor of the degree of multithreading. However, such performance gains may not be achieved due to contention for resources shared by the threads. Hardware thread priorities can be used to control the ratio of decode cycles allocated to the hardware threads of a processor core and, therefore, the degree of resource contention among the threads. The IBM POWER5, which has two hardware threads associated with each of its two cores, supports hardware thread priorities. …

An Investigation On The Mixing Hydrodynamics Of A Gas-Solid Fluidized Bed, Mario Alberto Ruvalcaba

Open Access Theses & Dissertations

In previous decades, the experimental and numerical studies of multiphase flows have remarkably increased especially gas-solid flows. Research of this type has abundant applications in energy, chemical processes, among others. Moreover, common applications include fluid catalytic cracking for petroleum refineries, fluidized bed reactors (type of chemical reactors), interface modification, such as applying a coating onto solid items, and an important technology breakthrough in coal gasification. The work presented on this thesis concentrates on the investigation of gas-solid flows utilizing Computational Fluid Dynamics (CFD) methods. The gas-solid flows studies performed on this investigation assumed the solid phase as a continuum with …

A Characterization Of Pseudo-Orders In The Ring Zn, Jorge Ivan Vargas

Open Access Theses & Dissertations

Partially ordered sets are widely studied in algebra. The theory of lattice-ordered and partially-ordered rings is an important case. In this paper, we consider a more general relation: pseudo orders, which are relations that are reflexive and antisymmetric, but are not necessarily transitive. Analogously to partially-ordered rings, we study pseudo-ordered rings. We present a general characterization for pseudo-ordered rings, and then we focus on a specific structure: the ring Zn. Having the constraints of this ring, we are able to give the conditions under which Zn can be pseudo-ordered.

Pressure Induced Phase Transformation Of Sno2: An Ab Initio Constant Pressure Study, Daniel Tesfai Yehdego

Open Access Theses & Dissertations

The behavior of SnO2 under rapid hydrostatic pressures is studied using constant-pressure ab initio simulations. The rutile-type SnO2 gradually transforms into the CaCl2-type structure at 15 GPa. At a pressure of about 20 GPa, a phase transformation into a cubic fluorite-type structure is observed. The orthorhombic Pnma cotunnite-structured phase is observed above 150 GPa. The mechanisms of these phase transformations at the atomistic level are discussed.

Pets In Print Advertising - Are We Seeing More Of Rover And Fluffy? A Content Analysis Of Four Popular Magazines, Charles M. Mayo, Donna T. Mayo, Marilyn M. Helms

Faculty Articles

This content analysis of advertising in four popular magazines investigates whether the role of pets-specifically dogs and cats-has changed as they have grown in popularity and power in American culture. Analysis of print advertisements from 1994 and 2004 suggests that although the frequency with which household pets appear in print advertisements has declined slightly, portrayals of "Rover" and "Fluffy" have changed to reflect society's growing fascination with and devotion to our furry family members.

Using Emotion To Gain Rapport In A Spoken Dialog System, Jaime Cesar Acosta

Open Access Theses & Dissertations

Although spoken dialog systems are becoming more widespread, their application is today limited largely to domains involving simple information exchange. To enable future applications, such as persuasion, new capabilities are needed. One barrier to the creation of such applications has been the lack of methods for building rapport between spoken dialog systems and human users, and more generally the inability to model the emotional and interpersonal aspects of dialog. This dissertation focuses on improving this.

A corpus of persuasive dialogs that in which a graduate coordinator informed undergraduate students about the graduate school option was analyzed. Although much of each …

Retention And Productivity In Industrial Search And Scan Tasks, Camilo Aguilera

Open Access Theses & Dissertations

An experiment was developed in order to study the interaction between individual factors (gender and mood) and the retention ability in search and scan activities. 54 subjects between 18 and 30 years old participated in a computer-based memory test from the North of Mexico area. A full factorial design was used to analyze the variables. Two factors, one with two levels (gender: male and female), and the second factor with three levels (mood: positive, neutral, and negative) were used in the analysis. The output was measured as the amount of characters memorized in a string of random alphanumeric characters. Data …

Synthesis And Characterization Of Organic-Inorganic Colorants, Kiran A V Adiraju

Open Access Theses & Dissertations

New colorant materials have been found with the interaction of organic dyes and metal alkoxides. Changes in the hue are observed as indigo dye or thioindigo dyes are combined with the ASB (aluminum tri-secbutoxide), when compared to the original indigo or thioindigo dye, due to the binding and geometry change between dye and metal alkoxide. These dyes are combined with the ASB in two different methods of hydrolysis, namely in the air and in water. Similarly, when TTIP (Titanium tetraisopropoxide) is hydrolyzed using the sol gel process, along with the incorporation of thioindigo dye, hue changes were observed. X-ray diffraction …

Development And Validation Of A High Throughput, Elisa Morales

Open Access Theses & Dissertations

Not Required

A Survey Of Physical Therapists: Long Term Therapy Needs For Persons With Severe Disabilities, Irmo Marini, Karen Luckett, Eva Miller, E. Lisette Blanco

School of Rehabilitation Services & Counseling Faculty Publications

Sixty-three physical therapists participated in a survey designed to obtain their opinions regarding long-term and on-going future therapy recommendations for patients with spinal cord injuries, reflex sympathetic dystrophy, traumatic brain injuries, cerebral vascular accidents, cerebral palsy, and severe burns. Overall, therapists indicated these patients needed on-going therapy due to a loss or impairment of motor skills, ambulation skills, and loss or impairment of self-care skills. The primary reason reported for patients not returning to physical therapy for on-going treatment following their acute care was lack of insurance coverage or end of insurance benefits. This study outlines the implications for life …

Empirical Development Of An Instructional Product And Its Impact On Mastery Of Geometry Concepts, Donaldson Williams

Dissertations

Problem

Relatively poor levels of mathematical thinking among American school children have been identified as a major issue over the past half century. Many efforts have been made to increase the mathematics performance of children in schools. Additionally, out-of-school-time programs have attempted to address this issue as well. Holistic development is one of the distinguishing features of Seventh-day Adventist instructional programs. Yet, as of 2007, the Pathfinder program, an informal educational program operated by the world-wide Seventh-day Adventist church, had no instructional product designed to foster participants’ cognitive development in mathematics. This study focused on the empirical development of an …

Cal Poly Honors Undergraduate Research Journal 2009, Cal Poly University Honors Program

Honors Undergraduate Research Journal

No abstract provided.

Biblical Exposition And Faith, Steven M. Fettke

Syllabus Repository

No abstract provided.

Enzymatic Reactions In Microdevices, Michael O'Connor

Master's Theses and Capstones

Enzyme reactions conducted in microdevices for diagnostic applications minimize the enzyme usage. In this research, polydimethylsiloxane microdevices were fabricated and used to study the well studied hydrogen peroxide decomposition reaction using bovine liver catalase. Soft lithography techniques were developed to fabricate custom-made microdevices in-house. High resolution photomasks and oxygen plasma treatment followed by baking for 2--3 hours yielded microdevices with vertical walls that did not leak easily. Flow experiments were conducted with free enzyme, enzyme immobilized on microdevice walls, and carrier-free enzyme aggregates. For free enzyme and carrier-free enzyme aggregate reactions, the average reaction rate showed a maxima at ∼80 …

Child Support And (In) Ability To Pay: The Case For The Cost Shares Model, Pamela Foohey

Scholarly Works

Currently enacted child support guidelines primarily focus on maintaining children's economic well-being when a single household is split into two. This article argues that this focus discounts another consideration which, when combined with the current analysis, could further advance children's well-being: the ability of parents to pay. An analysis of payment characteristics demonstrates that lower child support obligations may increase the amount of child support paid on average. Lowering presumptive obligations will make lower-income parents better able and more likely to pay their obligations, thereby increasing the amount of child support paid to lower-income children, while at most only marginally …

A Study Of Perceived Actual Versus Expected Roles Of Presidents Of Seventh-Day Adventist Senior Colleges And Universities In Eleven World Administrative Divisions, Sunith Kumar Das

Dissertations

Problem

To date no study has been undertaken with respect to Seventh-day Adventist senior college and university presidents’ actual and expected roles as perceived by the administrative team members and governing board chairs of these institutions. The purpose of this study was to determine the differences between presidents’ actual and expected roles.

Method

This descriptive, exploratory, survey study included a sample (n = 78) of board chairs, presidents, academic vice presidents, student service vice presidents, and finance vice presidents located in 27 senior colleges and universities operated by Seventh-day Adventists in 17 countries, including the U.S.A. Data were collected on …

Measurements Of Sea Surface Height Variability In The Eastern South Atlantic From Pressure Sensor–Equipped Inverted Echo Sounders: Baroclinic And Barotropic Components, Sheekela Baker-Yeboah, D. Randolph Watts, Deirdre A. Byrne

Graduate School of Oceanography Faculty Publications

Variability in sea surface height (SSH) can be decomposed into two contributions: one from changes in mass in the water column (barotropic) and the other from purely steric changes (baroclinic). Both contributions can be determined from data recorded by a pressure sensor–equipped inverted echo sounder (PIES). PIES data from the Agulhas South Atlantic Thermohaline Experiment (ASTTEX) were used, collected in the Cape Basin off South Africa, along 1000 km of an eddy corridor where Agulhas eddies carry cores of warm, salty Indian Ocean waters into the South Atlantic. The paper presents in detail the method used to convert PIES measurements …

Cultic Allusions In The Suffering Servant Poem (Isaiah 52:13-53:12), Kyesang Ha

Dissertations

This study investigates the Hebrew cultic allusions in the Suffering Servant Poem (Isa 52:13-53:12) in order to discover the nature or meaning of the suffering of Yahweh's Servant. The survey of literature reveals that the background of the Suffering Servant Poem is to be found in the Hebrew cultus. Thus the nature or meaning of the Servant's suffering is determined by a penetrating as well as comprehensive study of the text, specifically from the Hebrew cultic perspective. However, there has never been any careful, comprehensive study of the cultic allusions in the Poem in connection with the Suffering Servant. This …

Master Teachers’ Critical Practice And Student Learning Strategies: A Case Study In An Urban School District, Greg G. Paulmann

Antioch University Dissertations & Theses

Job embedded professional development in the K-12 education setting has long been discussed and debated. This study builds on standards of critical reflection and thinking using the National Institute for Excellence in Education’s Teacher Advancement Program’s master teacher model as a conduit between theory and practice. A study of professional development design based on student learning strategies became worthy of review. The master teacher, through field testing and critical reflection, isolates critical elements necessary to transform teaching practice around student learning strategies. The work of the master teacher is situated as a leader of change within a professional learning community. …

Mental Health Professionals’ Perceptions Of Voluntarily Childless Couples, Felizon C. Vidad

Antioch University Dissertations & Theses

Studies conducted in previous decades have examined attitudes toward and perceptions of voluntarily childless men and women. Participants in these studies were usually comprised of high school, college, and university students. The results showed that, compared to those who were parents, voluntarily childless men and women were mostly perceived in a less favorable light. This study sought to investigate how voluntarily childless heterosexual couples are currently viewed and whether attitudes toward the voluntarily childless have changed since the earlier research was conducted. Participants in this study consisted of individuals who were practicing in the field of mental health and who …