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Articles 17941 - 17970 of 19120
Full-Text Articles in Entire DC Network
Design And Development Of The Self-Efficacy For Musical Studies Scale, Kathryn Rae Pearson
Design And Development Of The Self-Efficacy For Musical Studies Scale, Kathryn Rae Pearson
Theses and Dissertations
Scale development in psychological studies is an area of intense growth (Clark & Watson, 1995). This report builds upon academic interest in the value of producing viable measurement tools. The purpose of this research project was to evaluate a self-efficacy measurement scale intended to determine individual music students' perceptions of capability. The areas of interest were four self-regulatory skill domains: strategy use, planning, monitoring, and evaluating in two music environments: independent practicing and performance.
This report describes the development and analysis of the Self-efficacy for Musical Studies (SEMS) scale. The report includes statistical analysis of the response data from formative …
Satellite Scatterometers: Calibration Using A Ground Station And Statistical Measurement Theory, Peter Kenneth Yoho
Satellite Scatterometers: Calibration Using A Ground Station And Statistical Measurement Theory, Peter Kenneth Yoho
Theses and Dissertations
Satellite scatterometers have recently gained popularity due to their unique ability to measure global geophysical data on a daily basis. Increased interest in scatterometry mandates improved design and calibration of these instruments. This dissertation presents new techniques for scatterometer calibration and addresses issues related to the design of future instruments and applications. First, the use of a calibration ground station is considered. A new methodology is established for calibration of SeaWinds, NASA's current scatterometer, using a receive-only ground station. Principles of the methodology are implemented, new analysis techniques developed, and important results obtained for instrument timing, frequency, power, position, and …
Nondemocratic Consolidation In Singapore, Christopher Rees
Nondemocratic Consolidation In Singapore, Christopher Rees
Sigma: Journal of Political and International Studies
No abstract provided.
Democratization, Ethnicity, And War, Lindsay Baxter
Democratization, Ethnicity, And War, Lindsay Baxter
Sigma: Journal of Political and International Studies
No abstract provided.
Vol. 21, Sigma: Journal Of Political And International Studies, Sigma: Journal Of Political And International Studies
Vol. 21, Sigma: Journal Of Political And International Studies, Sigma: Journal Of Political And International Studies
Sigma: Journal of Political and International Studies
No abstract provided.
Modeling The Transient Response Of A Thermosyphon, James Kirk Storey
Modeling The Transient Response Of A Thermosyphon, James Kirk Storey
Theses and Dissertations
Thermosyphon transient operation was numerically modeled. The numerical model presented in this work overcame the limitations of previous studies by including transient conduction in the vessel wall, shear stress between the rising vapor and the falling film in the thermosyphon, the influence of the mass in the liquid pool in the evaporator, and by using a more refined and accurate numerical grid. Unique to this model was the accounting for temporal changes in the effective length of the vapor space due to the expanding and contracting of non-condensable gases in the vapor space. The model assumed quasi-steady one-dimensional vapor flow, …
Understanding Why Adult Participants At The World Senior Games Choose A Healthy Diet, Ray M. Merrill, Eric C. Shields
Understanding Why Adult Participants At The World Senior Games Choose A Healthy Diet, Ray M. Merrill, Eric C. Shields
Faculty Publications
Identifying those seniors most likely to adopt a healthy diet, the relative importance they place on certain perceived benefits associated with a healthy diet, and whether these perceived benefits are associated with selected demographic, lifestyle, and health history variables is important for directing effective dietary health promotion programs. Methods: Analyses are based on a cross-sectional convenience sample of 670 seniors aged 50 years and older at the 2002 World Senior Games in St. George, Utah. Data are assessed using frequencies, bivariate analysis, analysis of variance, and multiple logistic regression analysis. Results Fruit and vegetable consumption was significantly higher in individuals …
Thermodynamic Property Prediction For Solid Organic Compounds Based On Molecular Structure, Benjamin T. Goodman
Thermodynamic Property Prediction For Solid Organic Compounds Based On Molecular Structure, Benjamin T. Goodman
Theses and Dissertations
A knowledge of thermophysical properties is necessary for the design of all process units. Reliable property prediction methods are essential because reliable experimental data are often not available due to concerns about measurement difficulty, cost, scarcity, safety, or environment. In particular, there is a lack of prediction methods for solid properties. Predicted property values can also be used to fill holes in property databases to understand more fully compound characteristics. This work is a comprehensive analysis of the prediction methods available for five commonly needed solid properties. Where satisfactory methods are available, recommendations are made; where methods are unsatisfactory in …
Predictors Of General Medical Use Among Individuals Seeking Therapy For Marital And Family Problems, Jacob D. Christenson
Predictors Of General Medical Use Among Individuals Seeking Therapy For Marital And Family Problems, Jacob D. Christenson
Theses and Dissertations
A number of studies have examined variables associated with medical use. However, most of the studies deal with samples that are not easily generalizable to other populations. In particular, no study is known to have looked at general medical use among people seeking services for marital and family problems. In this study, medical use of participants from the marriage and family therapy services at Brigham Young University Comprehensive Clinic was investigated to determine the best predictors of general medical use. Best subsets multiple linear regression showed that the best overall predictors of general medical use were anxiety and hostility.
A Closed-Form Dynamic Model Of The Compliant Constant-Force Mechanism Using The Pseudo-Rigid-Body Model, Cameron Boyle
A Closed-Form Dynamic Model Of The Compliant Constant-Force Mechanism Using The Pseudo-Rigid-Body Model, Cameron Boyle
Theses and Dissertations
A mathematical dynamic model is derived for the compliant constant-force mechanism, based on the pseudo-rigid-body model simplification of the device. The compliant constant-force mechanism is a slider mechanism incorporating large-deflection beams, which outputs near-constant-force across the range of its designed deflection. The equation of motion is successfully validated with empirical data from five separate mechanisms, comprising two configurations of compliant constant-force mechanism. The dynamic model is cast in generalized form to represent all possible configurations of compliant constant-force mechanism. Deriving the dynamic equation from the pseudo-rigid-body model is useful because every configuration is represented by the same model, so a …
Predicting Drag Polars For Micro Air Vehicles, Mark Elden Luke
Predicting Drag Polars For Micro Air Vehicles, Mark Elden Luke
Theses and Dissertations
Drag polars for three Micro Air Vehicles (MAVs) were measured at Reynolds numbers of 70,000, 50,000, 30,000, and 10,000 and compared to predictions generated using the classical approach. The MAVs tested had different configurations and aspect ratios varying from 1.2 to 1.6 and ratios of wetted surface area to planform area from 2.6 to 3.9.
A force balance was used to measure the lift and drag on the MAVs at angles of attack ranging from -5 degrees (or -10 degrees) to 10 degrees. The force balance allowed the MAVs to rotate in the pitching axis. The MAV angle of attack …
Swift Electro-Optic Modulator, Geofrey Craig Harston
Swift Electro-Optic Modulator, Geofrey Craig Harston
Theses and Dissertations
The Silicon Wafer Integrated Fiber Technology, SWIFT, is a novel platform for the development of photonic devices. SWIFT is comprised of an optical fiber, specifically a D-fiber in this work, embedded into a V-groove etched into a silicon wafer. This provides a method to secure the fiber and allows the use of standard semiconductor industry equipment and techniques in latter processing for device fabrication.
The SWIFT platform is used as the basis for the development of a polarimetric in-fiber electro-optic modulator. The modulator is based on the application of a nonlinear optical polymer, NLOP, film into the evanescent field of …
Large Eddy Simulation Based Turbulent Flow-Induced Vibration Of Fully Developed Pipe Flow, Matthew Thurlow Pittard
Large Eddy Simulation Based Turbulent Flow-Induced Vibration Of Fully Developed Pipe Flow, Matthew Thurlow Pittard
Theses and Dissertations
Flow-induced vibration caused by fully developed pipe flow has been recognized, but not fully investigated under turbulent conditions. This thesis focuses on the development of a numerical Fluid-Structure Interaction (FSI) model that will help define the relationship between pipe wall vibration and the physical characteristics of turbulent flow. Commercial FSI software packages are based on Reynolds Averaged Navier-Stokes (RANS) fluid models, which do not compute the instantaneous fluctuations in turbulent flow. This thesis presents an FSI approach based on Large Eddy Simulation (LES) flow models, which do compute the instantaneous fluctuations in turbulent flow. The results based on the LES …
Binary Fluency: Bibliographic Pedagogy In Japanese Studies At Penn, Alban M. Kojima
Binary Fluency: Bibliographic Pedagogy In Japanese Studies At Penn, Alban M. Kojima
Journal of East Asian Libraries
No abstract provided.
Anti-Imperialism And Racism In Heart Of Darkness, Jana Lloyd
Anti-Imperialism And Racism In Heart Of Darkness, Jana Lloyd
Inscape
No abstract provided.
Lukewarm In Paradise: A Mormon “Poi Dog” Political Journalist's Journey Into Hawaii Politics
Lukewarm In Paradise: A Mormon “Poi Dog” Political Journalist's Journey Into Hawaii Politics
Mormon Pacific Historical Society
No abstract provided.
No. 24 Mormon Pacific Historical Society
No. 24 Mormon Pacific Historical Society
Mormon Pacific Historical Society
No abstract provided.
The Taste Of Art, Amy E. Jensen
Committee Activities, Vickie Doll, Joy Kim, Lucia Park
Committee Activities, Vickie Doll, Joy Kim, Lucia Park
Journal of East Asian Libraries
No abstract provided.
The African Linguistic Diaspora: Gullah As A Creole Claimant, Norman C. Rothman
The African Linguistic Diaspora: Gullah As A Creole Claimant, Norman C. Rothman
Comparative Civilizations Review
No abstract provided.
Mainstream Civilizations—A Trial Essay, Kazutake Miyahara
Mainstream Civilizations—A Trial Essay, Kazutake Miyahara
Comparative Civilizations Review
No abstract provided.
Globalizations: The First Ten, Hundred, Five Thousand, And Million Years, David Wilkinson
Globalizations: The First Ten, Hundred, Five Thousand, And Million Years, David Wilkinson
Comparative Civilizations Review
No abstract provided.
Jacques Barzun. From Dawn To Decadence, 1500 To The Present: 500 Years Of Western Cultural Life, Palmer Talbutt
Jacques Barzun. From Dawn To Decadence, 1500 To The Present: 500 Years Of Western Cultural Life, Palmer Talbutt
Comparative Civilizations Review
No abstract provided.
Compliant Centrifugal Clutches: Design, Analysis, And Testing, Nathan B. Crane
Compliant Centrifugal Clutches: Design, Analysis, And Testing, Nathan B. Crane
Theses and Dissertations
Existing classes of centrifugal clutch concepts were reviewed. The pseudo-rigid-body model (PRBM), rigid-body replacement synthesis, force-deflection analysis, compliance potential evaluation, and compliant concept evaluation were used to develop effective new centrifugal clutch concepts. These methods helped develop and model four novel compliant centrifugal clutch designs, model two existing designs, and identify a concept with excellent potential for low-cost centrifugal clutch applications. This concept, the floating opposing arm (FOA) clutch, doubles the torque capacity metric relative to existing compliant designs. Torque and engagement speed models for this clutch were developed and verified against four prototype clutches. Additional novel designs devel-oped through …
A Texture Evolution Model In Cubic-Orthotropic Polycrystalline System, Brent L. Adams, H. Garmestani, D. S. Li
A Texture Evolution Model In Cubic-Orthotropic Polycrystalline System, Brent L. Adams, H. Garmestani, D. S. Li
Faculty Publications
This work has been funded under the AFOSR Grant # F49620-03-1-0011 and Army Research Lab Contract # DAAD17-02-P-0398 and DAAD 19-01-1-0742. B.L. Adams acknowledges support of Army Research Office, Proposal No. 42566-MS. The authors express their sincere gratitude to Professor Surya Kalidindi, for helpful suggestions and correspondence for the derivation of the processing path functions. A new methodology based on a conservation principle in the orientation space is developed to simulate the texture evolution in a cubic-orthotropic polycrystalline system. A least squares error method was used to improve the accuracy of the simulation results obtained from the texture evolution function. …
A Five-Zone Model For Direct Injection Diesel Combustion, Rich Asay
A Five-Zone Model For Direct Injection Diesel Combustion, Rich Asay
Theses and Dissertations
Recent imaging studies have provided a new conceptual model of the internal structure of direct injection diesel fuel jets as well as empirical correlations predicting jet development and structure. This information was used to create a diesel cycle simulation model using C language including compression, fuel injection and combustion, and expansion processes. Empirical relationships were used to create a new mixing-limited zero-dimensional model of the diesel combustion process. During fuel injection five zones were created to model the reacting fuel jet: 1) liquid phase fuel 2) vapor phase fuel 3) rich premixed products 4) diffusion flame sheath 5) surrounding bulk …
Theory, Design, And Fabrication Of Diffractive Grating Coupler For Slab Waveguide, Kevin Randolph Harper
Theory, Design, And Fabrication Of Diffractive Grating Coupler For Slab Waveguide, Kevin Randolph Harper
Theses and Dissertations
This thesis presents the theory design and fabrication of a diffractive grating coupler. The first part of the design process is to choose the period of the grating coupler based on the desired coupling angle. The second part of the design process is to choose the geometry of the grating that gives maximum coupling efficiency based on rigorous analyses.
The diffraction gratings are fabricated by recording the interference between two waves in photoresist. The waveguide is fabricated from silicon nitride that is deposited by chemical vapor deposition. The diffraction grating recording assembly is described along with the grating coupler fabrication …
Schema Matching And Data Extraction Over Html Tables, Cui Tao
Schema Matching And Data Extraction Over Html Tables, Cui Tao
Theses and Dissertations
Data on the Web in HTML tables is mostly structured, but we usually do not know the structure in advance. Thus, we cannot directly query for data of interest. We propose a solution to this problem for the case of mostly structured data in the form of HTML tables, based on document-independent extraction ontologies. The solution entails elements of table location and table understanding, data integration, and wrapper creation. Table location and understanding allows us to locate the table of interest, recognize attributes and values, pair attributes with values, and form records. Data-integration techniques allow us to match source records …