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Articles 5521 - 5550 of 6046
Full-Text Articles in Entire DC Network
An Evolutionary Hill-Climbing Approach To Symbolic Theory Revision, Orest Jacob Pilskalns
An Evolutionary Hill-Climbing Approach To Symbolic Theory Revision, Orest Jacob Pilskalns
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Fundamental Frequency In Speech Directed To Deaf Or Hearing Infants By Deaf Or Hearing Mothers, Meg Ann Traci
Fundamental Frequency In Speech Directed To Deaf Or Hearing Infants By Deaf Or Hearing Mothers, Meg Ann Traci
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Asymptotically Good Colorings Of Plane Multigraphs, Yong Zhao
Asymptotically Good Colorings Of Plane Multigraphs, Yong Zhao
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
An Embedding Of Schwartz Distributions In The Algebra Of Asymptotic Functions, Michael Oberguggenberger, Todor D. Todorov
An Embedding Of Schwartz Distributions In The Algebra Of Asymptotic Functions, Michael Oberguggenberger, Todor D. Todorov
Mathematics
We present a solution of the problem of multiplication of Schwartz distributions by embedding the space of distributions into a differential algebra of generalized functions, called in the paper "asymptotic function," similar to but different from J. F Colombeau's algebras of new generalized functions.
Dynamic Characterization Of 2-Aminopurine In Oligonucleotides Using Fluorescence, Magnetic Resonance, And Raman Spectroscopies., Kervin Orlando Evans
Dynamic Characterization Of 2-Aminopurine In Oligonucleotides Using Fluorescence, Magnetic Resonance, And Raman Spectroscopies., Kervin Orlando Evans
All ETDs from UAB
No abstract provided.
Solving Graph Problems On Special Classes Of Graphs., Hiryoung Kim
Solving Graph Problems On Special Classes Of Graphs., Hiryoung Kim
All ETDs from UAB
No abstract provided.
Finite Element Modeling Of Particle Cracking In Metal Matrix Composites., Preston Jr Scarber
Finite Element Modeling Of Particle Cracking In Metal Matrix Composites., Preston Jr Scarber
All ETDs from UAB
No abstract provided.
An Analysis Of A Specific Educational Intervention Program For At Risk Students In The Jefferson County, Alabama, School District., Pamela Lee Bowlin Weed
An Analysis Of A Specific Educational Intervention Program For At Risk Students In The Jefferson County, Alabama, School District., Pamela Lee Bowlin Weed
All ETDs from UAB
No abstract provided.
The Effects Of Gentle Human Touch On The Vagal Tone Of Premature Infants: A Pilot Study., A Kay Williams
The Effects Of Gentle Human Touch On The Vagal Tone Of Premature Infants: A Pilot Study., A Kay Williams
All ETDs from UAB
No abstract provided.
Kinetic And Thermodynamic Properties Of Platinum, Palladium And Rhodium Metallacrown Ethers., Dale Clark Smith
Kinetic And Thermodynamic Properties Of Platinum, Palladium And Rhodium Metallacrown Ethers., Dale Clark Smith
All ETDs from UAB
No abstract provided.
The Mechanism Of Conformational Change Induced By Sodium Hydroxide In Triple Helix 1-3-Beta-D-Glucans., Shih-Houng Young
The Mechanism Of Conformational Change Induced By Sodium Hydroxide In Triple Helix 1-3-Beta-D-Glucans., Shih-Houng Young
All ETDs from UAB
No abstract provided.
On The Mechanism Of Fibrillation Induction And Defibrillation: Influences Of Epicardial Activation Patterns On The Shock Outcome., Nipon Chattipakorn
On The Mechanism Of Fibrillation Induction And Defibrillation: Influences Of Epicardial Activation Patterns On The Shock Outcome., Nipon Chattipakorn
All ETDs from UAB
No abstract provided.
Studies Of Dilute Solution Properties Of Branched Polymers By Laser Light Scattering., Steven Robert Harville
Studies Of Dilute Solution Properties Of Branched Polymers By Laser Light Scattering., Steven Robert Harville
All ETDs from UAB
No abstract provided.
The Estimation And Forecasting Of Incomplete Stationary Time Series., Sharina Delores Person
The Estimation And Forecasting Of Incomplete Stationary Time Series., Sharina Delores Person
All ETDs from UAB
No abstract provided.
Daniel Pratt Of Prattville: A Northern Industrialist And A Southern Town., Curt John Evans
Daniel Pratt Of Prattville: A Northern Industrialist And A Southern Town., Curt John Evans
LSU Historical Dissertations and Theses
This dissertation explores the life of Daniel Pratt, one of the South's most important industrialists. Daniel Pratt was born in Temple, New Hampshire on July 20, 1799. In 1821, he migrated to Jones County, Georgia, where he worked as a carpenter-architect for ten years. He married Esther Ticknor of Connecticut in 1827 Samuel Griswold hired Pratt in 1831 to superintend his cotton gin factory in Jones County. Two years later, Pratt migrated to Autauga County in central Alabama, where he started his own gin shop. In 1839, Pratt founded Prattville, located fourteen miles from Alabama's capital, Montgomery. The next year, …
Techniques For Resolving Incomplete Systems In K-Systems Analysis., Gary J. Asmus
Techniques For Resolving Incomplete Systems In K-Systems Analysis., Gary J. Asmus
LSU Historical Dissertations and Theses
K-systems analysis is a generalization of reconstructability analysis (RA), where any general, complete multivariate system (g-system) can be transformed into an isomorphic, dimensionless system (a K-system) that has sufficient properties to be analyzed using probabilistic RA algorithms. In particular, a g-system consists of a set of states formed from a complete combination of the variables assigned specific values from a finite set of possible values and an associated system function value. The g-system must be complete in that all possible states must have an associated system function value. K-systems analysis has been applied to a variety of systems, but many …
An Analysis Of Factors Influencing The Teaching Of Biological Evolution In Louisiana Public Secondary Schools., Donald Wayne Aguillard
An Analysis Of Factors Influencing The Teaching Of Biological Evolution In Louisiana Public Secondary Schools., Donald Wayne Aguillard
LSU Historical Dissertations and Theses
Louisiana public school biology teachers were surveyed to investigate their attitudes toward biological evolution. A mixed method investigation was employed using a questionnaire and open-ended interviews. Results obtained from 64 percent of the sample receiving the questionnaire indicate that although teachers endorse the study of evolution as important, instructional time allocated to evolution is disproportionate with its status as a unifying concept of science. Two variables, number of college courses specifically devoted to evolution and number of semester credit hours in biology, produced a significant correlation with emphasis placed on evolution. The data suggest that teachers' knowledge base emerged as …
Chiral Recognition With Polymerized Dipeptide Surfactants In Capillary Electrophoresis., Eugene Joseph Billiot
Chiral Recognition With Polymerized Dipeptide Surfactants In Capillary Electrophoresis., Eugene Joseph Billiot
LSU Historical Dissertations and Theses
The research presented in this dissertation involves the use and characterization of polymerized amino acid based surfactants for the enantiomeric separation of chiral compounds using capillary electrophoresis. The first section, Chapter 1, is an introduction to three topics which are relevant to the work presented in this manuscript. The topics include a brief discussion about chirality and chiral recognition, followed by a description of surfactants and micellar systems. The last part of the introduction pertains to capillary electrophoresis and the use of micellar electrokinetic chromatography for enantiomeric separation of chiral compounds. In Chapter 2, the effect of amino acid order …
Pressure-Induced Changes In Structural And Mechanical Properties Of Gallium Arsenide And Nanophase Silicon Carbide Using Parallel Molecular Dynamics Simulations., Alok Chatterjee
LSU Historical Dissertations and Theses
Large-scale parallel molecular-dynamics (MD) simulations are performed to investigate properties and processes in nanophase silicon carbide (n-SiC) and gallium arsenide (GaAs) under pressure. These simulations involve 10 6 atoms interacting via realistic interatomic potentials. Structure and sintering of crystalline n-SiC are also investigated with neutron scattering experiments performed at the Intense Pulsed Neutron Source Division (IPNS), Argonne National Laboratory. Both MD simulations and neutron scattering experiments indicate the onset of sintering around 1500K. During sintering, the pores shrink in size while maintaining their morphology: Their fractal dimension remains ∼2.4 and their surface roughness exponent is ∼0.45. The pair distribution functions …
M1 Strength Distributions In Deformed Nuclei., Thomas Georg Beuschel
M1 Strength Distributions In Deformed Nuclei., Thomas Georg Beuschel
LSU Historical Dissertations and Theses
The Elliott SU(3) Model, extended via pseudo-spin for heavy nuclei, is used to study low-lying magnetic dipole excitations in deformed nuclei which axe known as "scissors" modes. Proton and neutron degrees of freedom are handled explicitly and a system Hamiltonian that preserves SU(3) symmetry and one that includes single particle energies as well as quadrupole-quadrupole and pairing two-body interactions are considered. Starting from a basic nuclear Hamiltonian that preserves SU(3) symmetry, a microscopic interpretation of the "scissors" mode of the Two Rotor Model is realized through a linear mapping between invariants of the rotor group and SU(3). The model allows …
Characterization And Analysis Of The Superabrasive Diamond Blade Sawing Process., Harlan Dwayne Jerro
Characterization And Analysis Of The Superabrasive Diamond Blade Sawing Process., Harlan Dwayne Jerro
LSU Historical Dissertations and Theses
Diamond-impregnated segmented circular blade sawing is one of the most effective, versatile, and extensively used methods of processing rock and other hard materials, such as granite, marble, concrete and asphalt. For many years, it has been known that chip thickness is one of the most significant parameters in the understanding of the sawing process, and other variables such as force and power have been correlated with it. In this work, the material chipping geometries have been mathematically defined and derived through kinematics analysis. From these chipping geometries, chip area and thickness relations have been obtained. A relation for the mean …
The Effects Of Autocorrelation In The Estimation Of Process Capability Indices., Lawrence Lee Magee
The Effects Of Autocorrelation In The Estimation Of Process Capability Indices., Lawrence Lee Magee
LSU Historical Dissertations and Theses
The current popularity of the process capability index, a measure of a supplier's ability to meet the product specifications demanded by a customer, has become a matter of some controversy. While admitting the validity of much existing criticism, this research demonstrates that sample estimation of the triple index (Cpl, Cp, Cpu), a variant of the widely used index pair (Cp, Cpk), is equivalent to estimation of the natural parameters (mu, sigma) whenever the measured process characteristic X has an unconditional (marginal) normal probability density function. This includes processes which obey the strictly stationary, normal ARMA( p, q) model. By this …
Rhetoric And Social Struggle: In Search Of The Topoi Of Violence., Edward Christopher Reilly
Rhetoric And Social Struggle: In Search Of The Topoi Of Violence., Edward Christopher Reilly
LSU Historical Dissertations and Theses
The rhetorical study of violence tends to examine violence within larger generic boundaries such as social movements studies or war rhetoric. In order to work toward a generalizable rhetorical theory of violence and discourse, this study examines texts which justify violence across generic boundaries. Accordingly, four case studies individually examine texts which justify political violence. This study compares and contrasts the rhetorical strategies of George Bush, the Unabomber, Earth First! and Abbie Hoffman. This study concludes that there are no universal strategies among the four case studies in the justification of violence. However, there appears to be a continuum of …
Literacy Stories: Attitudes Toward Literacy And Motivation To Read Among African-American Males In An Urban Community., Donna Parham Washington
Literacy Stories: Attitudes Toward Literacy And Motivation To Read Among African-American Males In An Urban Community., Donna Parham Washington
LSU Historical Dissertations and Theses
Through methods of ethnographic research this study explores the attitudes toward literacy and the motivation to read of African American male secondary school students in an urban community. This study includes historical inquiry obtained through the gathering of oral histories from men who experienced their youth and adolescence in the same geographic area as the secondary school students. Over the past fifty years the neighborhood focused on in this study has undergone tremendous change, both societal and structural. Information obtained through the interviews of the older men and the younger men will be compared to determine changes in literacy attitudes, …
Parallelization And Implementation Of Approximate Root Isolation For Nonlinear System By Monte Carlo., Ebrahim Khosravi
Parallelization And Implementation Of Approximate Root Isolation For Nonlinear System By Monte Carlo., Ebrahim Khosravi
LSU Historical Dissertations and Theses
This dissertation solves a fundamental problem of isolating the real roots of nonlinear systems of equations by Monte-Carlo that were published by Bush Jones. This algorithm requires only function values and can be applied readily to complicated systems of transcendental functions. The implementation of this sequential algorithm provides scientists with the means to utilize function analysis in mathematics or other fields of science. The algorithm, however, is so computationally intensive that the system is limited to a very small set of variables, and this will make it unfeasible for large systems of equations. Also a computational technique was needed for …
Synthesis And Physical Characterization Of Solid-State Materials., Patrick Allen Kolniak
Synthesis And Physical Characterization Of Solid-State Materials., Patrick Allen Kolniak
LSU Historical Dissertations and Theses
Two quantitative X-ray powder diffraction methods were used to analyze Phosphogypsum, a currently underutilized solid by-product of phosphoric acid production. Three kinds of synthetic mixtures were prepared to reflect the variable composition of phosphogypsum: AG (anhydrite and gypsum), QCD (quartz, calcite, and dolomite), and AGQCD. Compositions derived from the Whole Pattern fitting method for the binary and ternary mixtures agreed reasonably well with known values, with residuals $\rm\langle R\sp2\rangle = 0.10$ for eleven AG samples, and $\rm\langle R\sp2\rangle = 0.018$ for thirteen QCD samples. However, in the five-component mixtures, overlap of anhydrite, dolomite and gypsum peaks prevented quantitation. Compositions derived …
The Selective Digital Integrator: A New Device For Modulated Polarization Spectroscopy., Aljosa Vrancic
The Selective Digital Integrator: A New Device For Modulated Polarization Spectroscopy., Aljosa Vrancic
LSU Historical Dissertations and Theses
A new device, a selective digital integrator (SDI), for the acquisition of modulated polarization spectroscopy (MPS) signals is described. Special attention is given to the accurate measurement of very small (AC component of interest $<$10$\sp{-3}$ x DC component), rapidly modulated ($\sim$50 kHz) signals at or below noise levels. Various data acquisition methods and problems associated with the collection of modulated signals are discussed. The SDI solves most of these problems and has the following advantages: it provides the average-time resolved profile of a modulated signal; it eliminates errors if the modulation is not sinusoidal; it enables separate measurements of the various phases of the signal modulation cycle; it permits simultaneous measurement of absorption, circular dichroism (CD) and linear dichroism (LD) spectra; it facilitates 3-D absorbance measurements; it has a wide gain-switching-free dynamic range (10 orders of magnitude or more); it offers a constant S/N ratio mode of operation; it eliminates the need for photomultiplier voltage feedback, and it has faster scanning speeds. The time-resolution, selectivity, wide dynamic range, and low-overhead on-the-fly data processing are useful for other modulated spectroscopy (MS) and non-MS experiments such as pulse height distribution and time-resolved pulse counting measurements. The advantages of the MPS-SDI method are tested on the first Rydberg electronic transitions of (+)-3-methylcyclopentanone. The experimental results validate the predicted SDI capabilities. However, they also point to two difficulties that had not been noted previously: the presence of LD in a gaseous sample and a pressure-dependence of the relative peak heights of the CD spectrum. Models for these anomalies are proposed. The presence of the oscillatory LD (but not an LD background) is explained with a sample cell model based on the observed polarization-dependent time-resolved profiles of transmitted light intensity. To obtain expressions for these intensities, a theoretical background, which provides a new approach to the treatment of light/matter interaction, is included as an Appendix. To explain the second anomaly, present only at high optical densities, a model based on the presence of scattered light is introduced and verified. The mode of correction for the scattering problem is outlined.
Creativity And The Cathartic Moment: Chaos Theory And The Art Of Theatre., Robert E. Brooks
Creativity And The Cathartic Moment: Chaos Theory And The Art Of Theatre., Robert E. Brooks
LSU Historical Dissertations and Theses
This dissertation investigates the potential applications of the scientific paradigm known as "chaos theory" in the examination of dramatic theory. By illuminating the limitations of traditional Newtonian physics and Euclidean geometry, chaos theory conveys philosophical implications that transcend the scientific and provide suitable tools for describing cultural and artistic phenomena. These implications include emphasis on unpredictability, interaction and feedback, qualitative rather that quantitative analyses, and a nonlinear, continuous, even holistic perspective of systems traditionally viewed as dischotomous (such as order and disorder or part and whole). This study examines several standard works of dramatic theory, concentrating on the relationship of …
Multiobjective Optimal Filtering And Control., Xiang Chen
Multiobjective Optimal Filtering And Control., Xiang Chen
LSU Historical Dissertations and Theses
A fundamental question in feedback control design is how to achieve desired performance under system uncertainties and external disturbances. The well-known LQG and ${\cal H}\sb2$ control design techniques are well suited for achieving some well-defined optimal transient performance under certain classes of stochastic external disturbances such as white noise. However, these optimal control design techniques are highly model dependent and may be very sensitive to parameter variations and system uncertainties. The ${\cal H}\sb{\infty}$ control theory, on the other hand, was developed precisely because of the desire to overcome these deficiencies. One potential shortfall of the existing ${\cal H}\sb{\infty}$ control design …
Development And Assessment Of A Property Rights-Based Measure Of State Regulatory Climate., Ferdinand Francis Wirth Iii
Development And Assessment Of A Property Rights-Based Measure Of State Regulatory Climate., Ferdinand Francis Wirth Iii
LSU Historical Dissertations and Theses
States implement many of the environmental laws enacted during the last thirty years. A key policy issue is the effect of differences in state institutions and environmental policies on the location of livestock agriculture. There is widespread belief that the stringency of state environmental regulations, known as regulatory climate, is an important factor influencing the location, growth and expansion decisions of livestock agriculture. Existing regulatory climate measures are not tailored to agriculture, and their use has given mixed results. Conceptual and empirical models were developed for the U.S. aquaculture industry, based on elements of public choice and firm location theories …